Spaces:
Running
Running
File size: 2,653 Bytes
d4b85c0 |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 |
'use strict';
Object.defineProperty(exports, '__esModule', {
value: true,
});
exports.PossibleFragmentSpreadsRule = PossibleFragmentSpreadsRule;
var _inspect = require('../../jsutils/inspect.js');
var _GraphQLError = require('../../error/GraphQLError.js');
var _definition = require('../../type/definition.js');
var _typeComparators = require('../../utilities/typeComparators.js');
var _typeFromAST = require('../../utilities/typeFromAST.js');
/**
* Possible fragment spread
*
* A fragment spread is only valid if the type condition could ever possibly
* be true: if there is a non-empty intersection of the possible parent types,
* and possible types which pass the type condition.
*/
function PossibleFragmentSpreadsRule(context) {
return {
InlineFragment(node) {
const fragType = context.getType();
const parentType = context.getParentType();
if (
(0, _definition.isCompositeType)(fragType) &&
(0, _definition.isCompositeType)(parentType) &&
!(0, _typeComparators.doTypesOverlap)(
context.getSchema(),
fragType,
parentType,
)
) {
const parentTypeStr = (0, _inspect.inspect)(parentType);
const fragTypeStr = (0, _inspect.inspect)(fragType);
context.reportError(
new _GraphQLError.GraphQLError(
`Fragment cannot be spread here as objects of type "${parentTypeStr}" can never be of type "${fragTypeStr}".`,
{
nodes: node,
},
),
);
}
},
FragmentSpread(node) {
const fragName = node.name.value;
const fragType = getFragmentType(context, fragName);
const parentType = context.getParentType();
if (
fragType &&
parentType &&
!(0, _typeComparators.doTypesOverlap)(
context.getSchema(),
fragType,
parentType,
)
) {
const parentTypeStr = (0, _inspect.inspect)(parentType);
const fragTypeStr = (0, _inspect.inspect)(fragType);
context.reportError(
new _GraphQLError.GraphQLError(
`Fragment "${fragName}" cannot be spread here as objects of type "${parentTypeStr}" can never be of type "${fragTypeStr}".`,
{
nodes: node,
},
),
);
}
},
};
}
function getFragmentType(context, name) {
const frag = context.getFragment(name);
if (frag) {
const type = (0, _typeFromAST.typeFromAST)(
context.getSchema(),
frag.typeCondition,
);
if ((0, _definition.isCompositeType)(type)) {
return type;
}
}
}
|