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boriel/zxbasic | prepro/definestable.py | DefinesTable.set | def set(self, id_, lineno, value='', fname=None, args=None):
""" Like the above, but issues no warning on duplicate macro
definitions.
"""
if fname is None:
if CURRENT_FILE:
fname = CURRENT_FILE[-1]
else: # If no files opened yet, use owns program fname
fname = sys.argv[0]
self.table[id_] = ID(id_, args, value, lineno, fname) | python | def set(self, id_, lineno, value='', fname=None, args=None):
""" Like the above, but issues no warning on duplicate macro
definitions.
"""
if fname is None:
if CURRENT_FILE:
fname = CURRENT_FILE[-1]
else: # If no files opened yet, use owns program fname
fname = sys.argv[0]
self.table[id_] = ID(id_, args, value, lineno, fname) | [
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boriel/zxbasic | arch/zx48k/backend/__common.py | _int_ops | def _int_ops(op1, op2, swap=True):
""" Receives a list with two strings (operands).
If none of them contains integers, returns None.
Otherwise, returns a t-uple with (op[0], op[1]),
where op[1] is the integer one (the list is swapped)
unless swap is False (e.g. sub and div used this
because they're not commutative).
The integer operand is always converted to int type.
"""
if is_int(op1):
if swap:
return op2, int(op1)
else:
return int(op1), op2
if is_int(op2):
return op1, int(op2)
return None | python | def _int_ops(op1, op2, swap=True):
""" Receives a list with two strings (operands).
If none of them contains integers, returns None.
Otherwise, returns a t-uple with (op[0], op[1]),
where op[1] is the integer one (the list is swapped)
unless swap is False (e.g. sub and div used this
because they're not commutative).
The integer operand is always converted to int type.
"""
if is_int(op1):
if swap:
return op2, int(op1)
else:
return int(op1), op2
if is_int(op2):
return op1, int(op2)
return None | [
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boriel/zxbasic | arch/zx48k/backend/__common.py | _f_ops | def _f_ops(op1, op2, swap=True):
""" Receives a list with two strings (operands).
If none of them contains integers, returns None.
Otherwise, returns a t-uple with (op[0], op[1]),
where op[1] is the integer one (the list is swapped)
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if is_float(op1):
if swap:
return op2, float(op1)
else:
return float(op1), op2
if is_float(op2):
return op1, float(op2)
return None | python | def _f_ops(op1, op2, swap=True):
""" Receives a list with two strings (operands).
If none of them contains integers, returns None.
Otherwise, returns a t-uple with (op[0], op[1]),
where op[1] is the integer one (the list is swapped)
unless swap is False (e.g. sub and div used this
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The integer operand is always converted to int type.
"""
if is_float(op1):
if swap:
return op2, float(op1)
else:
return float(op1), op2
if is_float(op2):
return op1, float(op2)
return None | [
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boriel/zxbasic | symbols/call.py | SymbolCALL.make_node | def make_node(cls, id_, params, lineno):
""" This will return an AST node for a function/procedure call.
"""
assert isinstance(params, SymbolARGLIST)
entry = gl.SYMBOL_TABLE.access_func(id_, lineno)
if entry is None: # A syntax / semantic error
return None
if entry.callable is False: # Is it NOT callable?
if entry.type_ != Type.string:
errmsg.syntax_error_not_array_nor_func(lineno, id_)
return None
gl.SYMBOL_TABLE.check_class(id_, CLASS.function, lineno)
entry.accessed = True
if entry.declared and not entry.forwarded:
check_call_arguments(lineno, id_, params)
else: # All functions goes to global scope by default
if not isinstance(entry, SymbolFUNCTION):
entry = SymbolVAR.to_function(entry, lineno)
gl.SYMBOL_TABLE.move_to_global_scope(id_)
gl.FUNCTION_CALLS.append((id_, params, lineno,))
return cls(entry, params, lineno) | python | def make_node(cls, id_, params, lineno):
""" This will return an AST node for a function/procedure call.
"""
assert isinstance(params, SymbolARGLIST)
entry = gl.SYMBOL_TABLE.access_func(id_, lineno)
if entry is None: # A syntax / semantic error
return None
if entry.callable is False: # Is it NOT callable?
if entry.type_ != Type.string:
errmsg.syntax_error_not_array_nor_func(lineno, id_)
return None
gl.SYMBOL_TABLE.check_class(id_, CLASS.function, lineno)
entry.accessed = True
if entry.declared and not entry.forwarded:
check_call_arguments(lineno, id_, params)
else: # All functions goes to global scope by default
if not isinstance(entry, SymbolFUNCTION):
entry = SymbolVAR.to_function(entry, lineno)
gl.SYMBOL_TABLE.move_to_global_scope(id_)
gl.FUNCTION_CALLS.append((id_, params, lineno,))
return cls(entry, params, lineno) | [
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boriel/zxbasic | symbols/paramlist.py | SymbolPARAMLIST.make_node | def make_node(clss, node, *params):
''' This will return a node with a param_list
(declared in a function declaration)
Parameters:
-node: A SymbolPARAMLIST instance or None
-params: SymbolPARAMDECL insances
'''
if node is None:
node = clss()
if node.token != 'PARAMLIST':
return clss.make_node(None, node, *params)
for i in params:
if i is not None:
node.appendChild(i)
return node | python | def make_node(clss, node, *params):
''' This will return a node with a param_list
(declared in a function declaration)
Parameters:
-node: A SymbolPARAMLIST instance or None
-params: SymbolPARAMDECL insances
'''
if node is None:
node = clss()
if node.token != 'PARAMLIST':
return clss.make_node(None, node, *params)
for i in params:
if i is not None:
node.appendChild(i)
return node | [
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boriel/zxbasic | symbols/paramlist.py | SymbolPARAMLIST.appendChild | def appendChild(self, param):
''' Overrides base class.
'''
Symbol.appendChild(self, param)
if param.offset is None:
param.offset = self.size
self.size += param.size | python | def appendChild(self, param):
''' Overrides base class.
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if param.offset is None:
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self.size += param.size | [
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boriel/zxbasic | symbols/binary.py | SymbolBINARY.make_node | def make_node(cls, operator, left, right, lineno, func=None,
type_=None):
""" Creates a binary node for a binary operation,
e.g. A + 6 => '+' (A, 6) in prefix notation.
Parameters:
-operator: the binary operation token. e.g. 'PLUS' for A + 6
-left: left operand
-right: right operand
-func: is a lambda function used when constant folding is applied
-type_: resulting type (to enforce it).
If no type_ is specified the resulting one will be guessed.
"""
if left is None or right is None:
return None
a, b = left, right # short form names
# Check for constant non-numeric operations
c_type = common_type(a, b) # Resulting operation type or None
if c_type: # there must be a common type for a and b
if is_numeric(a, b) and (is_const(a) or is_number(a)) and \
(is_const(b) or is_number(b)):
if func is not None:
a = SymbolTYPECAST.make_node(c_type, a, lineno) # ensure type
b = SymbolTYPECAST.make_node(c_type, b, lineno) # ensure type
return SymbolNUMBER(func(a.value, b.value), type_=type_, lineno=lineno)
if is_static(a, b):
a = SymbolTYPECAST.make_node(c_type, a, lineno) # ensure type
b = SymbolTYPECAST.make_node(c_type, b, lineno) # ensure type
return SymbolCONST(cls(operator, a, b, lineno, type_=type_, func=func), lineno=lineno)
if operator in ('BNOT', 'BAND', 'BOR', 'BXOR', 'NOT', 'AND', 'OR',
'XOR', 'MINUS', 'MULT', 'DIV', 'SHL', 'SHR') and \
not is_numeric(a, b):
syntax_error(lineno, 'Operator %s cannot be used with STRINGS' % operator)
return None
if is_string(a, b) and func is not None: # Are they STRING Constants?
if operator == 'PLUS':
return SymbolSTRING(func(a.value, b.value), lineno)
return SymbolNUMBER(int(func(a.text, b.text)), type_=TYPE.ubyte,
lineno=lineno) # Convert to u8 (boolean)
if operator in ('BNOT', 'BAND', 'BOR', 'BXOR'):
if TYPE.is_decimal(c_type):
c_type = TYPE.long_
if a.type_ != b.type_ and TYPE.string in (a.type_, b.type_):
c_type = a.type_ # Will give an error based on the fist operand
if operator not in ('SHR', 'SHL'):
a = SymbolTYPECAST.make_node(c_type, a, lineno)
b = SymbolTYPECAST.make_node(c_type, b, lineno)
if a is None or b is None:
return None
if type_ is None:
if operator in ('LT', 'GT', 'EQ', 'LE', 'GE', 'NE', 'AND', 'OR',
'XOR', 'NOT'):
type_ = TYPE.ubyte # Boolean type
else:
type_ = c_type
return cls(operator, a, b, type_=type_, lineno=lineno) | python | def make_node(cls, operator, left, right, lineno, func=None,
type_=None):
""" Creates a binary node for a binary operation,
e.g. A + 6 => '+' (A, 6) in prefix notation.
Parameters:
-operator: the binary operation token. e.g. 'PLUS' for A + 6
-left: left operand
-right: right operand
-func: is a lambda function used when constant folding is applied
-type_: resulting type (to enforce it).
If no type_ is specified the resulting one will be guessed.
"""
if left is None or right is None:
return None
a, b = left, right # short form names
# Check for constant non-numeric operations
c_type = common_type(a, b) # Resulting operation type or None
if c_type: # there must be a common type for a and b
if is_numeric(a, b) and (is_const(a) or is_number(a)) and \
(is_const(b) or is_number(b)):
if func is not None:
a = SymbolTYPECAST.make_node(c_type, a, lineno) # ensure type
b = SymbolTYPECAST.make_node(c_type, b, lineno) # ensure type
return SymbolNUMBER(func(a.value, b.value), type_=type_, lineno=lineno)
if is_static(a, b):
a = SymbolTYPECAST.make_node(c_type, a, lineno) # ensure type
b = SymbolTYPECAST.make_node(c_type, b, lineno) # ensure type
return SymbolCONST(cls(operator, a, b, lineno, type_=type_, func=func), lineno=lineno)
if operator in ('BNOT', 'BAND', 'BOR', 'BXOR', 'NOT', 'AND', 'OR',
'XOR', 'MINUS', 'MULT', 'DIV', 'SHL', 'SHR') and \
not is_numeric(a, b):
syntax_error(lineno, 'Operator %s cannot be used with STRINGS' % operator)
return None
if is_string(a, b) and func is not None: # Are they STRING Constants?
if operator == 'PLUS':
return SymbolSTRING(func(a.value, b.value), lineno)
return SymbolNUMBER(int(func(a.text, b.text)), type_=TYPE.ubyte,
lineno=lineno) # Convert to u8 (boolean)
if operator in ('BNOT', 'BAND', 'BOR', 'BXOR'):
if TYPE.is_decimal(c_type):
c_type = TYPE.long_
if a.type_ != b.type_ and TYPE.string in (a.type_, b.type_):
c_type = a.type_ # Will give an error based on the fist operand
if operator not in ('SHR', 'SHL'):
a = SymbolTYPECAST.make_node(c_type, a, lineno)
b = SymbolTYPECAST.make_node(c_type, b, lineno)
if a is None or b is None:
return None
if type_ is None:
if operator in ('LT', 'GT', 'EQ', 'LE', 'GE', 'NE', 'AND', 'OR',
'XOR', 'NOT'):
type_ = TYPE.ubyte # Boolean type
else:
type_ = c_type
return cls(operator, a, b, type_=type_, lineno=lineno) | [
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-left: left operand
-right: right operand
-func: is a lambda function used when constant folding is applied
-type_: resulting type (to enforce it).
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boriel/zxbasic | symbols/type_.py | SymbolTYPE.is_dynamic | def is_dynamic(self):
""" True if this type uses dynamic (Heap) memory.
e.g. strings or dynamic arrays
"""
if self is not self.final:
return self.final.is_dynamic
return any([x.is_dynamic for x in self.children]) | python | def is_dynamic(self):
""" True if this type uses dynamic (Heap) memory.
e.g. strings or dynamic arrays
"""
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return self.final.is_dynamic
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boriel/zxbasic | symbols/type_.py | Type.to_signed | def to_signed(cls, t):
""" Return signed type or equivalent
"""
assert isinstance(t, SymbolTYPE)
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assert t.is_basic
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return t
return cls.unknown | python | def to_signed(cls, t):
""" Return signed type or equivalent
"""
assert isinstance(t, SymbolTYPE)
t = t.final
assert t.is_basic
if cls.is_unsigned(t):
return {cls.ubyte: cls.byte_,
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boriel/zxbasic | api/symboltable.py | SymbolTable.get_entry | def get_entry(self, id_, scope=None):
""" Returns the ID entry stored in self.table, starting
by the first one. Returns None if not found.
If scope is not None, only the given scope is searched.
"""
if id_[-1] in DEPRECATED_SUFFIXES:
id_ = id_[:-1] # Remove it
if scope is not None:
assert len(self.table) > scope
return self[scope][id_]
for sc in self:
if sc[id_] is not None:
return sc[id_]
return None | python | def get_entry(self, id_, scope=None):
""" Returns the ID entry stored in self.table, starting
by the first one. Returns None if not found.
If scope is not None, only the given scope is searched.
"""
if id_[-1] in DEPRECATED_SUFFIXES:
id_ = id_[:-1] # Remove it
if scope is not None:
assert len(self.table) > scope
return self[scope][id_]
for sc in self:
if sc[id_] is not None:
return sc[id_]
return None | [
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boriel/zxbasic | api/symboltable.py | SymbolTable.declare | def declare(self, id_, lineno, entry):
""" Check there is no 'id' already declared in the current scope, and
creates and returns it. Otherwise, returns None,
and the caller function raises the syntax/semantic error.
Parameter entry is the SymbolVAR, SymbolVARARRAY, etc. instance
The entry 'declared' field is leave untouched. Setting it if on
behalf of the caller.
"""
id2 = id_
type_ = entry.type_
if id2[-1] in DEPRECATED_SUFFIXES:
id2 = id2[:-1] # Remove it
type_ = symbols.TYPEREF(self.basic_types[SUFFIX_TYPE[id_[-1]]], lineno) # Overrides type_
if entry.type_ is not None and not entry.type_.implicit and type_ != entry.type_:
syntax_error(lineno, "expected type {2} for '{0}', got {1}".format(id_, entry.type_.name, type_.name))
# Checks if already declared
if self[self.current_scope][id2] is not None:
return None
entry.caseins = OPTIONS.case_insensitive.value
self[self.current_scope][id2] = entry
entry.name = id2 # Removes DEPRECATED SUFFIXES if any
if isinstance(entry, symbols.TYPE):
return entry # If it's a type declaration, we're done
# HINT: The following should be done by the respective callers!
# entry.callable = None # True if function, strings or arrays
# entry.class_ = None # TODO: important
entry.forwarded = False # True for a function header
entry.mangled = '%s%s%s' % (self.mangle, global_.MANGLE_CHR, entry.name) # Mangled name
entry.type_ = type_ # type_ now reflects entry sigil (i.e. a$ => 'string' type) if any
entry.scopeRef = self[self.current_scope]
return entry | python | def declare(self, id_, lineno, entry):
""" Check there is no 'id' already declared in the current scope, and
creates and returns it. Otherwise, returns None,
and the caller function raises the syntax/semantic error.
Parameter entry is the SymbolVAR, SymbolVARARRAY, etc. instance
The entry 'declared' field is leave untouched. Setting it if on
behalf of the caller.
"""
id2 = id_
type_ = entry.type_
if id2[-1] in DEPRECATED_SUFFIXES:
id2 = id2[:-1] # Remove it
type_ = symbols.TYPEREF(self.basic_types[SUFFIX_TYPE[id_[-1]]], lineno) # Overrides type_
if entry.type_ is not None and not entry.type_.implicit and type_ != entry.type_:
syntax_error(lineno, "expected type {2} for '{0}', got {1}".format(id_, entry.type_.name, type_.name))
# Checks if already declared
if self[self.current_scope][id2] is not None:
return None
entry.caseins = OPTIONS.case_insensitive.value
self[self.current_scope][id2] = entry
entry.name = id2 # Removes DEPRECATED SUFFIXES if any
if isinstance(entry, symbols.TYPE):
return entry # If it's a type declaration, we're done
# HINT: The following should be done by the respective callers!
# entry.callable = None # True if function, strings or arrays
# entry.class_ = None # TODO: important
entry.forwarded = False # True for a function header
entry.mangled = '%s%s%s' % (self.mangle, global_.MANGLE_CHR, entry.name) # Mangled name
entry.type_ = type_ # type_ now reflects entry sigil (i.e. a$ => 'string' type) if any
entry.scopeRef = self[self.current_scope]
return entry | [
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boriel/zxbasic | api/symboltable.py | SymbolTable.check_is_declared | def check_is_declared(self, id_, lineno, classname='identifier',
scope=None, show_error=True):
""" Checks if the given id is already defined in any scope
or raises a Syntax Error.
Note: classname is not the class attribute, but the name of
the class as it would appear on compiler messages.
"""
result = self.get_entry(id_, scope)
if isinstance(result, symbols.TYPE):
return True
if result is None or not result.declared:
if show_error:
syntax_error(lineno, 'Undeclared %s "%s"' % (classname, id_))
return False
return True | python | def check_is_declared(self, id_, lineno, classname='identifier',
scope=None, show_error=True):
""" Checks if the given id is already defined in any scope
or raises a Syntax Error.
Note: classname is not the class attribute, but the name of
the class as it would appear on compiler messages.
"""
result = self.get_entry(id_, scope)
if isinstance(result, symbols.TYPE):
return True
if result is None or not result.declared:
if show_error:
syntax_error(lineno, 'Undeclared %s "%s"' % (classname, id_))
return False
return True | [
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boriel/zxbasic | api/symboltable.py | SymbolTable.check_is_undeclared | def check_is_undeclared(self, id_, lineno, classname='identifier',
scope=None, show_error=False):
""" The reverse of the above.
Check the given identifier is not already declared. Returns True
if OK, False otherwise.
"""
result = self.get_entry(id_, scope)
if result is None or not result.declared:
return True
if scope is None:
scope = self.current_scope
if show_error:
syntax_error(lineno,
'Duplicated %s "%s" (previous one at %s:%i)' %
(classname, id_, self.table[scope][id_].filename,
self.table[scope][id_].lineno))
return False | python | def check_is_undeclared(self, id_, lineno, classname='identifier',
scope=None, show_error=False):
""" The reverse of the above.
Check the given identifier is not already declared. Returns True
if OK, False otherwise.
"""
result = self.get_entry(id_, scope)
if result is None or not result.declared:
return True
if scope is None:
scope = self.current_scope
if show_error:
syntax_error(lineno,
'Duplicated %s "%s" (previous one at %s:%i)' %
(classname, id_, self.table[scope][id_].filename,
self.table[scope][id_].lineno))
return False | [
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boriel/zxbasic | api/symboltable.py | SymbolTable.check_class | def check_class(self, id_, class_, lineno, scope=None, show_error=True):
""" Check the id is either undefined or defined with
the given class.
- If the identifier (e.g. variable) does not exists means
it's undeclared, and returns True (OK).
- If the identifier exists, but its class_ attribute is
unknown yet (None), returns also True. This means the
identifier has been referenced in advanced and it's undeclared.
Otherwise fails returning False.
"""
assert CLASS.is_valid(class_)
entry = self.get_entry(id_, scope)
if entry is None or entry.class_ == CLASS.unknown: # Undeclared yet
return True
if entry.class_ != class_:
if show_error:
if entry.class_ == CLASS.array:
a1 = 'n'
else:
a1 = ''
if class_ == CLASS.array:
a2 = 'n'
else:
a2 = ''
syntax_error(lineno, "identifier '%s' is a%s %s, not a%s %s" %
(id_, a1, entry.class_, a2, class_))
return False
return True | python | def check_class(self, id_, class_, lineno, scope=None, show_error=True):
""" Check the id is either undefined or defined with
the given class.
- If the identifier (e.g. variable) does not exists means
it's undeclared, and returns True (OK).
- If the identifier exists, but its class_ attribute is
unknown yet (None), returns also True. This means the
identifier has been referenced in advanced and it's undeclared.
Otherwise fails returning False.
"""
assert CLASS.is_valid(class_)
entry = self.get_entry(id_, scope)
if entry is None or entry.class_ == CLASS.unknown: # Undeclared yet
return True
if entry.class_ != class_:
if show_error:
if entry.class_ == CLASS.array:
a1 = 'n'
else:
a1 = ''
if class_ == CLASS.array:
a2 = 'n'
else:
a2 = ''
syntax_error(lineno, "identifier '%s' is a%s %s, not a%s %s" %
(id_, a1, entry.class_, a2, class_))
return False
return True | [
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boriel/zxbasic | api/symboltable.py | SymbolTable.enter_scope | def enter_scope(self, funcname):
""" Starts a new variable scope.
Notice the *IMPORTANT* marked lines. This is how a new scope is added,
by pushing a new dict at the end (and popped out later).
"""
old_mangle = self.mangle
self.mangle = '%s%s%s' % (self.mangle, global_.MANGLE_CHR, funcname)
self.table.append(SymbolTable.Scope(self.mangle, parent_mangle=old_mangle))
global_.META_LOOPS.append(global_.LOOPS) # saves current LOOPS state
global_.LOOPS = [] | python | def enter_scope(self, funcname):
""" Starts a new variable scope.
Notice the *IMPORTANT* marked lines. This is how a new scope is added,
by pushing a new dict at the end (and popped out later).
"""
old_mangle = self.mangle
self.mangle = '%s%s%s' % (self.mangle, global_.MANGLE_CHR, funcname)
self.table.append(SymbolTable.Scope(self.mangle, parent_mangle=old_mangle))
global_.META_LOOPS.append(global_.LOOPS) # saves current LOOPS state
global_.LOOPS = [] | [
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boriel/zxbasic | api/symboltable.py | SymbolTable.leave_scope | def leave_scope(self):
""" Ends a function body and pops current scope out of the symbol table.
"""
def entry_size(entry):
""" For local variables and params, returns the real variable or
local array size in bytes
"""
if entry.scope == SCOPE.global_ or \
entry.is_aliased: # aliases or global variables = 0
return 0
if entry.class_ != CLASS.array:
return entry.size
return entry.memsize
for v in self.table[self.current_scope].values(filter_by_opt=False):
if not v.accessed:
if v.scope == SCOPE.parameter:
kind = 'Parameter'
v.accessed = True # HINT: Parameters must always be present even if not used!
warning_not_used(v.lineno, v.name, kind=kind)
entries = sorted(self.table[self.current_scope].values(filter_by_opt=True), key=entry_size)
offset = 0
for entry in entries: # Symbols of the current level
if entry.class_ is CLASS.unknown:
self.move_to_global_scope(entry.name)
if entry.class_ in (CLASS.function, CLASS.label, CLASS.type_):
continue
# Local variables offset
if entry.class_ == CLASS.var and entry.scope == SCOPE.local:
if entry.alias is not None: # alias of another variable?
if entry.offset is None:
entry.offset = entry.alias.offset
else:
entry.offset = entry.alias.offset - entry.offset
else:
offset += entry_size(entry)
entry.offset = offset
if entry.class_ == CLASS.array and entry.scope == SCOPE.local:
entry.offset = entry_size(entry) + offset
offset = entry.offset
self.mangle = self[self.current_scope].parent_mangle
self.table.pop()
global_.LOOPS = global_.META_LOOPS.pop()
return offset | python | def leave_scope(self):
""" Ends a function body and pops current scope out of the symbol table.
"""
def entry_size(entry):
""" For local variables and params, returns the real variable or
local array size in bytes
"""
if entry.scope == SCOPE.global_ or \
entry.is_aliased: # aliases or global variables = 0
return 0
if entry.class_ != CLASS.array:
return entry.size
return entry.memsize
for v in self.table[self.current_scope].values(filter_by_opt=False):
if not v.accessed:
if v.scope == SCOPE.parameter:
kind = 'Parameter'
v.accessed = True # HINT: Parameters must always be present even if not used!
warning_not_used(v.lineno, v.name, kind=kind)
entries = sorted(self.table[self.current_scope].values(filter_by_opt=True), key=entry_size)
offset = 0
for entry in entries: # Symbols of the current level
if entry.class_ is CLASS.unknown:
self.move_to_global_scope(entry.name)
if entry.class_ in (CLASS.function, CLASS.label, CLASS.type_):
continue
# Local variables offset
if entry.class_ == CLASS.var and entry.scope == SCOPE.local:
if entry.alias is not None: # alias of another variable?
if entry.offset is None:
entry.offset = entry.alias.offset
else:
entry.offset = entry.alias.offset - entry.offset
else:
offset += entry_size(entry)
entry.offset = offset
if entry.class_ == CLASS.array and entry.scope == SCOPE.local:
entry.offset = entry_size(entry) + offset
offset = entry.offset
self.mangle = self[self.current_scope].parent_mangle
self.table.pop()
global_.LOOPS = global_.META_LOOPS.pop()
return offset | [
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boriel/zxbasic | api/symboltable.py | SymbolTable.move_to_global_scope | def move_to_global_scope(self, id_):
""" If the given id is in the current scope, and there is more than
1 scope, move the current id to the global scope and make it global.
Labels need this.
"""
# In the current scope and more than 1 scope?
if id_ in self.table[self.current_scope].keys(filter_by_opt=False) and len(self.table) > 1:
symbol = self.table[self.current_scope][id_]
symbol.offset = None
symbol.scope = SCOPE.global_
if symbol.class_ != CLASS.label:
symbol.mangled = "%s%s%s" % (self.table[self.global_scope].mangle, global_.MANGLE_CHR, id_)
self.table[self.global_scope][id_] = symbol
del self.table[self.current_scope][id_] # Removes it from the current scope
__DEBUG__("'{}' entry moved to global scope".format(id_)) | python | def move_to_global_scope(self, id_):
""" If the given id is in the current scope, and there is more than
1 scope, move the current id to the global scope and make it global.
Labels need this.
"""
# In the current scope and more than 1 scope?
if id_ in self.table[self.current_scope].keys(filter_by_opt=False) and len(self.table) > 1:
symbol = self.table[self.current_scope][id_]
symbol.offset = None
symbol.scope = SCOPE.global_
if symbol.class_ != CLASS.label:
symbol.mangled = "%s%s%s" % (self.table[self.global_scope].mangle, global_.MANGLE_CHR, id_)
self.table[self.global_scope][id_] = symbol
del self.table[self.current_scope][id_] # Removes it from the current scope
__DEBUG__("'{}' entry moved to global scope".format(id_)) | [
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boriel/zxbasic | api/symboltable.py | SymbolTable.make_static | def make_static(self, id_):
""" The given ID in the current scope is changed to 'global', but the
variable remains in the current scope, if it's a 'global private'
variable: A variable private to a function scope, but whose contents
are not in the stack, not in the global variable area.
These are called 'static variables' in C.
A copy of the instance, but mangled, is also allocated in the global
symbol table.
"""
entry = self.table[self.current_scope][id_]
entry.scope = SCOPE.global_
self.table[self.global_scope][entry.mangled] = entry | python | def make_static(self, id_):
""" The given ID in the current scope is changed to 'global', but the
variable remains in the current scope, if it's a 'global private'
variable: A variable private to a function scope, but whose contents
are not in the stack, not in the global variable area.
These are called 'static variables' in C.
A copy of the instance, but mangled, is also allocated in the global
symbol table.
"""
entry = self.table[self.current_scope][id_]
entry.scope = SCOPE.global_
self.table[self.global_scope][entry.mangled] = entry | [
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These are called 'static variables' in C.
A copy of the instance, but mangled, is also allocated in the global
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boriel/zxbasic | api/symboltable.py | SymbolTable.access_id | def access_id(self, id_, lineno, scope=None, default_type=None, default_class=CLASS.unknown):
""" Access a symbol by its identifier and checks if it exists.
If not, it's supposed to be an implicit declared variable.
default_class is the class to use in case of an undeclared-implicit-accessed id
"""
if isinstance(default_type, symbols.BASICTYPE):
default_type = symbols.TYPEREF(default_type, lineno, implicit=False)
assert default_type is None or isinstance(default_type, symbols.TYPEREF)
if not check_is_declared_explicit(lineno, id_):
return None
result = self.get_entry(id_, scope)
if result is None:
if default_type is None:
default_type = symbols.TYPEREF(self.basic_types[global_.DEFAULT_IMPLICIT_TYPE],
lineno, implicit=True)
result = self.declare_variable(id_, lineno, default_type)
result.declared = False # It was implicitly declared
result.class_ = default_class
return result
# The entry was already declared. If it's type is auto and the default type is not None,
# update its type.
if default_type is not None and result.type_ == self.basic_types[TYPE.auto]:
result.type_ = default_type
warning_implicit_type(lineno, id_, default_type)
return result | python | def access_id(self, id_, lineno, scope=None, default_type=None, default_class=CLASS.unknown):
""" Access a symbol by its identifier and checks if it exists.
If not, it's supposed to be an implicit declared variable.
default_class is the class to use in case of an undeclared-implicit-accessed id
"""
if isinstance(default_type, symbols.BASICTYPE):
default_type = symbols.TYPEREF(default_type, lineno, implicit=False)
assert default_type is None or isinstance(default_type, symbols.TYPEREF)
if not check_is_declared_explicit(lineno, id_):
return None
result = self.get_entry(id_, scope)
if result is None:
if default_type is None:
default_type = symbols.TYPEREF(self.basic_types[global_.DEFAULT_IMPLICIT_TYPE],
lineno, implicit=True)
result = self.declare_variable(id_, lineno, default_type)
result.declared = False # It was implicitly declared
result.class_ = default_class
return result
# The entry was already declared. If it's type is auto and the default type is not None,
# update its type.
if default_type is not None and result.type_ == self.basic_types[TYPE.auto]:
result.type_ = default_type
warning_implicit_type(lineno, id_, default_type)
return result | [
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boriel/zxbasic | api/symboltable.py | SymbolTable.access_var | def access_var(self, id_, lineno, scope=None, default_type=None):
"""
Since ZX BASIC allows access to undeclared variables, we must allow
them, and *implicitly* declare them if they are not declared already.
This function just checks if the id_ exists and returns its entry so.
Otherwise, creates an implicit declared variable entry and returns it.
If the --strict command line flag is enabled (or #pragma option explicit
is in use) checks ensures the id_ is already declared.
Returns None on error.
"""
result = self.access_id(id_, lineno, scope, default_type)
if result is None:
return None
if not self.check_class(id_, CLASS.var, lineno, scope):
return None
assert isinstance(result, symbols.VAR)
result.class_ = CLASS.var
return result | python | def access_var(self, id_, lineno, scope=None, default_type=None):
"""
Since ZX BASIC allows access to undeclared variables, we must allow
them, and *implicitly* declare them if they are not declared already.
This function just checks if the id_ exists and returns its entry so.
Otherwise, creates an implicit declared variable entry and returns it.
If the --strict command line flag is enabled (or #pragma option explicit
is in use) checks ensures the id_ is already declared.
Returns None on error.
"""
result = self.access_id(id_, lineno, scope, default_type)
if result is None:
return None
if not self.check_class(id_, CLASS.var, lineno, scope):
return None
assert isinstance(result, symbols.VAR)
result.class_ = CLASS.var
return result | [
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boriel/zxbasic | api/symboltable.py | SymbolTable.access_array | def access_array(self, id_, lineno, scope=None, default_type=None):
"""
Called whenever an accessed variable is expected to be an array.
ZX BASIC requires arrays to be declared before usage, so they're
checked.
Also checks for class array.
"""
if not self.check_is_declared(id_, lineno, 'array', scope):
return None
if not self.check_class(id_, CLASS.array, lineno, scope):
return None
return self.access_id(id_, lineno, scope=scope, default_type=default_type) | python | def access_array(self, id_, lineno, scope=None, default_type=None):
"""
Called whenever an accessed variable is expected to be an array.
ZX BASIC requires arrays to be declared before usage, so they're
checked.
Also checks for class array.
"""
if not self.check_is_declared(id_, lineno, 'array', scope):
return None
if not self.check_class(id_, CLASS.array, lineno, scope):
return None
return self.access_id(id_, lineno, scope=scope, default_type=default_type) | [
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boriel/zxbasic | api/symboltable.py | SymbolTable.access_func | def access_func(self, id_, lineno, scope=None, default_type=None):
"""
Since ZX BASIC allows access to undeclared functions, we must allow
and *implicitly* declare them if they are not declared already.
This function just checks if the id_ exists and returns its entry if so.
Otherwise, creates an implicit declared variable entry and returns it.
"""
assert default_type is None or isinstance(default_type, symbols.TYPEREF)
result = self.get_entry(id_, scope)
if result is None:
if default_type is None:
if global_.DEFAULT_IMPLICIT_TYPE == TYPE.auto:
default_type = symbols.TYPEREF(self.basic_types[TYPE.auto], lineno, implicit=True)
else:
default_type = symbols.TYPEREF(self.basic_types[global_.DEFAULT_TYPE], lineno, implicit=True)
return self.declare_func(id_, lineno, default_type)
if not self.check_class(id_, CLASS.function, lineno, scope):
return None
return result | python | def access_func(self, id_, lineno, scope=None, default_type=None):
"""
Since ZX BASIC allows access to undeclared functions, we must allow
and *implicitly* declare them if they are not declared already.
This function just checks if the id_ exists and returns its entry if so.
Otherwise, creates an implicit declared variable entry and returns it.
"""
assert default_type is None or isinstance(default_type, symbols.TYPEREF)
result = self.get_entry(id_, scope)
if result is None:
if default_type is None:
if global_.DEFAULT_IMPLICIT_TYPE == TYPE.auto:
default_type = symbols.TYPEREF(self.basic_types[TYPE.auto], lineno, implicit=True)
else:
default_type = symbols.TYPEREF(self.basic_types[global_.DEFAULT_TYPE], lineno, implicit=True)
return self.declare_func(id_, lineno, default_type)
if not self.check_class(id_, CLASS.function, lineno, scope):
return None
return result | [
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boriel/zxbasic | api/symboltable.py | SymbolTable.access_call | def access_call(self, id_, lineno, scope=None, type_=None):
""" Creates a func/array/string call. Checks if id is callable or not.
An identifier is "callable" if it can be followed by a list of para-
meters.
This does not mean the id_ is a function, but that it allows the same
syntax a function does:
For example:
- MyFunction(a, "hello", 5) is a Function so MyFuncion is callable
- MyArray(5, 3.7, VAL("32")) makes MyArray identifier "callable".
- MyString(5 TO 7) or MyString(5) is a "callable" string.
"""
entry = self.access_id(id_, lineno, scope, default_type=type_)
if entry is None:
return self.access_func(id_, lineno)
if entry.callable is False: # Is it NOT callable?
if entry.type_ != self.basic_types[TYPE.string]:
syntax_error_not_array_nor_func(lineno, id_)
return None
else: # Ok, it is a string slice if it has 0 or 1 parameters
return entry
if entry.callable is None and entry.type_ == self.basic_types[TYPE.string]:
# Ok, it is a string slice if it has 0 or 1 parameters
entry.callable = False
return entry
# Mangled name (functions always has _name as mangled)
# entry.mangled = '_%s' % entry.name
# entry.callable = True # HINT: must be true already
return entry | python | def access_call(self, id_, lineno, scope=None, type_=None):
""" Creates a func/array/string call. Checks if id is callable or not.
An identifier is "callable" if it can be followed by a list of para-
meters.
This does not mean the id_ is a function, but that it allows the same
syntax a function does:
For example:
- MyFunction(a, "hello", 5) is a Function so MyFuncion is callable
- MyArray(5, 3.7, VAL("32")) makes MyArray identifier "callable".
- MyString(5 TO 7) or MyString(5) is a "callable" string.
"""
entry = self.access_id(id_, lineno, scope, default_type=type_)
if entry is None:
return self.access_func(id_, lineno)
if entry.callable is False: # Is it NOT callable?
if entry.type_ != self.basic_types[TYPE.string]:
syntax_error_not_array_nor_func(lineno, id_)
return None
else: # Ok, it is a string slice if it has 0 or 1 parameters
return entry
if entry.callable is None and entry.type_ == self.basic_types[TYPE.string]:
# Ok, it is a string slice if it has 0 or 1 parameters
entry.callable = False
return entry
# Mangled name (functions always has _name as mangled)
# entry.mangled = '_%s' % entry.name
# entry.callable = True # HINT: must be true already
return entry | [
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boriel/zxbasic | api/symboltable.py | SymbolTable.declare_variable | def declare_variable(self, id_, lineno, type_, default_value=None):
""" Like the above, but checks that entry.declared is False.
Otherwise raises an error.
Parameter default_value specifies an initialized variable, if set.
"""
assert isinstance(type_, symbols.TYPEREF)
if not self.check_is_undeclared(id_, lineno, scope=self.current_scope, show_error=False):
entry = self.get_entry(id_)
if entry.scope == SCOPE.parameter:
syntax_error(lineno,
"Variable '%s' already declared as a parameter "
"at %s:%i" % (id_, entry.filename, entry.lineno))
else:
syntax_error(lineno, "Variable '%s' already declared at "
"%s:%i" % (id_, entry.filename, entry.lineno))
return None
if not self.check_class(id_, CLASS.var, lineno, scope=self.current_scope):
return None
entry = (self.get_entry(id_, scope=self.current_scope) or
self.declare(id_, lineno, symbols.VAR(id_, lineno, class_=CLASS.var)))
__DEBUG__("Entry %s declared with class %s at scope %i" % (entry.name, CLASS.to_string(entry.class_),
self.current_scope))
if entry.type_ is None or entry.type_ == self.basic_types[TYPE.unknown]:
entry.type_ = type_
if entry.type_ != type_:
if not type_.implicit and entry.type_ is not None:
syntax_error(lineno,
"'%s' suffix is for type '%s' but it was "
"declared as '%s'" %
(id_, entry.type_, type_))
return None
# type_ = entry.type_ # TODO: Unused??
entry.scope = SCOPE.global_ if self.current_scope == self.global_scope else SCOPE.local
entry.callable = False
entry.class_ = CLASS.var # HINT: class_ attribute could be erased if access_id was used.
entry.declared = True # marks it as declared
if entry.type_.implicit and entry.type_ != self.basic_types[TYPE.unknown]:
warning_implicit_type(lineno, id_, entry.type_.name)
if default_value is not None and entry.type_ != default_value.type_:
if is_number(default_value):
default_value = symbols.TYPECAST.make_node(entry.type_, default_value,
lineno)
if default_value is None:
return None
else:
syntax_error(lineno,
"Variable '%s' declared as '%s' but initialized "
"with a '%s' value" %
(id_, entry.type_, default_value.type_))
return None
entry.default_value = default_value
return entry | python | def declare_variable(self, id_, lineno, type_, default_value=None):
""" Like the above, but checks that entry.declared is False.
Otherwise raises an error.
Parameter default_value specifies an initialized variable, if set.
"""
assert isinstance(type_, symbols.TYPEREF)
if not self.check_is_undeclared(id_, lineno, scope=self.current_scope, show_error=False):
entry = self.get_entry(id_)
if entry.scope == SCOPE.parameter:
syntax_error(lineno,
"Variable '%s' already declared as a parameter "
"at %s:%i" % (id_, entry.filename, entry.lineno))
else:
syntax_error(lineno, "Variable '%s' already declared at "
"%s:%i" % (id_, entry.filename, entry.lineno))
return None
if not self.check_class(id_, CLASS.var, lineno, scope=self.current_scope):
return None
entry = (self.get_entry(id_, scope=self.current_scope) or
self.declare(id_, lineno, symbols.VAR(id_, lineno, class_=CLASS.var)))
__DEBUG__("Entry %s declared with class %s at scope %i" % (entry.name, CLASS.to_string(entry.class_),
self.current_scope))
if entry.type_ is None or entry.type_ == self.basic_types[TYPE.unknown]:
entry.type_ = type_
if entry.type_ != type_:
if not type_.implicit and entry.type_ is not None:
syntax_error(lineno,
"'%s' suffix is for type '%s' but it was "
"declared as '%s'" %
(id_, entry.type_, type_))
return None
# type_ = entry.type_ # TODO: Unused??
entry.scope = SCOPE.global_ if self.current_scope == self.global_scope else SCOPE.local
entry.callable = False
entry.class_ = CLASS.var # HINT: class_ attribute could be erased if access_id was used.
entry.declared = True # marks it as declared
if entry.type_.implicit and entry.type_ != self.basic_types[TYPE.unknown]:
warning_implicit_type(lineno, id_, entry.type_.name)
if default_value is not None and entry.type_ != default_value.type_:
if is_number(default_value):
default_value = symbols.TYPECAST.make_node(entry.type_, default_value,
lineno)
if default_value is None:
return None
else:
syntax_error(lineno,
"Variable '%s' declared as '%s' but initialized "
"with a '%s' value" %
(id_, entry.type_, default_value.type_))
return None
entry.default_value = default_value
return entry | [
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boriel/zxbasic | api/symboltable.py | SymbolTable.declare_type | def declare_type(self, type_):
""" Declares a type.
Checks its name is not already used in the current scope,
and that it's not a basic type.
Returns the given type_ Symbol, or None on error.
"""
assert isinstance(type_, symbols.TYPE)
# Checks it's not a basic type
if not type_.is_basic and type_.name.lower() in TYPE.TYPE_NAMES.values():
syntax_error(type_.lineno, "'%s' is a basic type and cannot be redefined" %
type_.name)
return None
if not self.check_is_undeclared(type_.name, type_.lineno, scope=self.current_scope, show_error=True):
return None
entry = self.declare(type_.name, type_.lineno, type_)
return entry | python | def declare_type(self, type_):
""" Declares a type.
Checks its name is not already used in the current scope,
and that it's not a basic type.
Returns the given type_ Symbol, or None on error.
"""
assert isinstance(type_, symbols.TYPE)
# Checks it's not a basic type
if not type_.is_basic and type_.name.lower() in TYPE.TYPE_NAMES.values():
syntax_error(type_.lineno, "'%s' is a basic type and cannot be redefined" %
type_.name)
return None
if not self.check_is_undeclared(type_.name, type_.lineno, scope=self.current_scope, show_error=True):
return None
entry = self.declare(type_.name, type_.lineno, type_)
return entry | [
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boriel/zxbasic | api/symboltable.py | SymbolTable.declare_const | def declare_const(self, id_, lineno, type_, default_value):
""" Similar to the above. But declares a Constant.
"""
if not self.check_is_undeclared(id_, lineno, scope=self.current_scope, show_error=False):
entry = self.get_entry(id_)
if entry.scope == SCOPE.parameter:
syntax_error(lineno,
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else:
syntax_error(lineno, "Constant '%s' already declared at "
"%s:%i" % (id_, entry.filename, entry.lineno))
return None
entry = self.declare_variable(id_, lineno, type_, default_value)
if entry is None:
return None
entry.class_ = CLASS.const
return entry | python | def declare_const(self, id_, lineno, type_, default_value):
""" Similar to the above. But declares a Constant.
"""
if not self.check_is_undeclared(id_, lineno, scope=self.current_scope, show_error=False):
entry = self.get_entry(id_)
if entry.scope == SCOPE.parameter:
syntax_error(lineno,
"Constant '%s' already declared as a parameter "
"at %s:%i" % (id_, entry.filename, entry.lineno))
else:
syntax_error(lineno, "Constant '%s' already declared at "
"%s:%i" % (id_, entry.filename, entry.lineno))
return None
entry = self.declare_variable(id_, lineno, type_, default_value)
if entry is None:
return None
entry.class_ = CLASS.const
return entry | [
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boriel/zxbasic | api/symboltable.py | SymbolTable.declare_label | def declare_label(self, id_, lineno):
""" Declares a label (line numbers are also labels).
Unlike variables, labels are always global.
"""
# TODO: consider to make labels private
id1 = id_
id_ = str(id_)
if not self.check_is_undeclared(id_, lineno, 'label'):
entry = self.get_entry(id_)
syntax_error(lineno, "Label '%s' already used at %s:%i" %
(id_, entry.filename, entry.lineno))
return entry
entry = self.get_entry(id_)
if entry is not None and entry.declared:
if entry.is_line_number:
syntax_error(lineno, "Duplicated line number '%s'. "
"Previous was at %i" % (entry.name, entry.lineno))
else:
syntax_error(lineno, "Label '%s' already declared at line %i" %
(id_, entry.lineno))
return None
entry = (self.get_entry(id_, scope=self.current_scope) or
self.get_entry(id_, scope=self.global_scope) or
self.declare(id_, lineno, symbols.LABEL(id_, lineno)))
if entry is None:
return None
if not isinstance(entry, symbols.LABEL):
entry = symbols.VAR.to_label(entry)
if id_[0] == '.':
id_ = id_[1:]
# HINT: ??? Mangled name. Just the label, 'cause it starts with '.'
entry.mangled = '%s' % id_
else:
# HINT: Mangled name. Labels are __LABEL__
entry.mangled = '__LABEL__%s' % entry.name
entry.is_line_number = isinstance(id1, int)
if global_.FUNCTION_LEVEL:
entry.scope_owner = list(global_.FUNCTION_LEVEL)
self.move_to_global_scope(id_) # Labels are always global # TODO: not in the future
entry.declared = True
entry.type_ = self.basic_types[global_.PTR_TYPE]
return entry | python | def declare_label(self, id_, lineno):
""" Declares a label (line numbers are also labels).
Unlike variables, labels are always global.
"""
# TODO: consider to make labels private
id1 = id_
id_ = str(id_)
if not self.check_is_undeclared(id_, lineno, 'label'):
entry = self.get_entry(id_)
syntax_error(lineno, "Label '%s' already used at %s:%i" %
(id_, entry.filename, entry.lineno))
return entry
entry = self.get_entry(id_)
if entry is not None and entry.declared:
if entry.is_line_number:
syntax_error(lineno, "Duplicated line number '%s'. "
"Previous was at %i" % (entry.name, entry.lineno))
else:
syntax_error(lineno, "Label '%s' already declared at line %i" %
(id_, entry.lineno))
return None
entry = (self.get_entry(id_, scope=self.current_scope) or
self.get_entry(id_, scope=self.global_scope) or
self.declare(id_, lineno, symbols.LABEL(id_, lineno)))
if entry is None:
return None
if not isinstance(entry, symbols.LABEL):
entry = symbols.VAR.to_label(entry)
if id_[0] == '.':
id_ = id_[1:]
# HINT: ??? Mangled name. Just the label, 'cause it starts with '.'
entry.mangled = '%s' % id_
else:
# HINT: Mangled name. Labels are __LABEL__
entry.mangled = '__LABEL__%s' % entry.name
entry.is_line_number = isinstance(id1, int)
if global_.FUNCTION_LEVEL:
entry.scope_owner = list(global_.FUNCTION_LEVEL)
self.move_to_global_scope(id_) # Labels are always global # TODO: not in the future
entry.declared = True
entry.type_ = self.basic_types[global_.PTR_TYPE]
return entry | [
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boriel/zxbasic | api/symboltable.py | SymbolTable.declare_param | def declare_param(self, id_, lineno, type_=None):
""" Declares a parameter
Check if entry.declared is False. Otherwise raises an error.
"""
if not self.check_is_undeclared(id_, lineno, classname='parameter',
scope=self.current_scope, show_error=True):
return None
entry = self.declare(id_, lineno, symbols.PARAMDECL(id_, lineno, type_))
if entry is None:
return
entry.declared = True
if entry.type_.implicit:
warning_implicit_type(lineno, id_, type_)
return entry | python | def declare_param(self, id_, lineno, type_=None):
""" Declares a parameter
Check if entry.declared is False. Otherwise raises an error.
"""
if not self.check_is_undeclared(id_, lineno, classname='parameter',
scope=self.current_scope, show_error=True):
return None
entry = self.declare(id_, lineno, symbols.PARAMDECL(id_, lineno, type_))
if entry is None:
return
entry.declared = True
if entry.type_.implicit:
warning_implicit_type(lineno, id_, type_)
return entry | [
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boriel/zxbasic | api/symboltable.py | SymbolTable.declare_array | def declare_array(self, id_, lineno, type_, bounds, default_value=None):
""" Declares an array in the symbol table (VARARRAY). Error if already
exists.
"""
assert isinstance(type_, symbols.TYPEREF)
assert isinstance(bounds, symbols.BOUNDLIST)
if not self.check_class(id_, CLASS.array, lineno, scope=self.current_scope):
return None
entry = self.get_entry(id_, self.current_scope)
if entry is None:
entry = self.declare(id_, lineno, symbols.VARARRAY(id_, bounds, lineno, type_=type_))
if not entry.declared:
if entry.callable:
syntax_error(lineno,
"Array '%s' must be declared before use. "
"First used at line %i" %
(id_, entry.lineno))
return None
else:
if entry.scope == SCOPE.parameter:
syntax_error(lineno, "variable '%s' already declared as a "
"parameter at line %i" % (id_, entry.lineno))
else:
syntax_error(lineno, "variable '%s' already declared at "
"line %i" % (id_, entry.lineno))
return None
if entry.type_ != self.basic_types[TYPE.unknown] and entry.type_ != type_:
if not type_.implicit:
syntax_error(lineno, "Array suffix for '%s' is for type '%s' "
"but declared as '%s'" %
(entry.name, entry.type_, type_))
return None
type_.implicit = False
type_ = entry.type_
if type_.implicit:
warning_implicit_type(lineno, id_, type_)
if not isinstance(entry, symbols.VARARRAY):
entry = symbols.VAR.to_vararray(entry, bounds)
entry.declared = True
entry.type_ = type_
entry.scope = SCOPE.global_ if self.current_scope == self.global_scope else SCOPE.local
entry.default_value = default_value
entry.callable = True
entry.class_ = CLASS.array
entry.lbound_used = entry.ubound_used = False # Flag to true when LBOUND/UBOUND used somewhere in the code
__DEBUG__('Entry %s declared with class %s at scope %i' % (id_, CLASS.to_string(entry.class_),
self.current_scope))
return entry | python | def declare_array(self, id_, lineno, type_, bounds, default_value=None):
""" Declares an array in the symbol table (VARARRAY). Error if already
exists.
"""
assert isinstance(type_, symbols.TYPEREF)
assert isinstance(bounds, symbols.BOUNDLIST)
if not self.check_class(id_, CLASS.array, lineno, scope=self.current_scope):
return None
entry = self.get_entry(id_, self.current_scope)
if entry is None:
entry = self.declare(id_, lineno, symbols.VARARRAY(id_, bounds, lineno, type_=type_))
if not entry.declared:
if entry.callable:
syntax_error(lineno,
"Array '%s' must be declared before use. "
"First used at line %i" %
(id_, entry.lineno))
return None
else:
if entry.scope == SCOPE.parameter:
syntax_error(lineno, "variable '%s' already declared as a "
"parameter at line %i" % (id_, entry.lineno))
else:
syntax_error(lineno, "variable '%s' already declared at "
"line %i" % (id_, entry.lineno))
return None
if entry.type_ != self.basic_types[TYPE.unknown] and entry.type_ != type_:
if not type_.implicit:
syntax_error(lineno, "Array suffix for '%s' is for type '%s' "
"but declared as '%s'" %
(entry.name, entry.type_, type_))
return None
type_.implicit = False
type_ = entry.type_
if type_.implicit:
warning_implicit_type(lineno, id_, type_)
if not isinstance(entry, symbols.VARARRAY):
entry = symbols.VAR.to_vararray(entry, bounds)
entry.declared = True
entry.type_ = type_
entry.scope = SCOPE.global_ if self.current_scope == self.global_scope else SCOPE.local
entry.default_value = default_value
entry.callable = True
entry.class_ = CLASS.array
entry.lbound_used = entry.ubound_used = False # Flag to true when LBOUND/UBOUND used somewhere in the code
__DEBUG__('Entry %s declared with class %s at scope %i' % (id_, CLASS.to_string(entry.class_),
self.current_scope))
return entry | [
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boriel/zxbasic | api/symboltable.py | SymbolTable.declare_func | def declare_func(self, id_, lineno, type_=None):
""" Declares a function in the current scope.
Checks whether the id exist or not (error if exists).
And creates the entry at the symbol table.
"""
if not self.check_class(id_, 'function', lineno):
entry = self.get_entry(id_) # Must not exist or have _class = None or Function and declared = False
an = 'an' if entry.class_.lower()[0] in 'aeio' else 'a'
syntax_error(lineno, "'%s' already declared as %s %s at %i" % (id_, an, entry.class_, entry.lineno))
return None
entry = self.get_entry(id_) # Must not exist or have _class = None or Function and declared = False
if entry is not None:
if entry.declared and not entry.forwarded:
syntax_error(lineno, "Duplicate function name '%s', previously defined at %i" % (id_, entry.lineno))
return None
if entry.class_ != CLASS.unknown and entry.callable is False: # HINT: Must use is False here.
syntax_error_not_array_nor_func(lineno, id_)
return None
if id_[-1] in DEPRECATED_SUFFIXES and entry.type_ != self.basic_types[SUFFIX_TYPE[id_[-1]]]:
syntax_error_func_type_mismatch(lineno, entry)
if entry.token == 'VAR': # This was a function used in advance
symbols.VAR.to_function(entry, lineno=lineno)
entry.mangled = '%s_%s' % (self.mangle, entry.name) # HINT: mangle for nexted scopes
else:
entry = self.declare(id_, lineno, symbols.FUNCTION(id_, lineno, type_=type_))
if entry.forwarded:
entry.forwared = False # No longer forwarded
old_type = entry.type_ # Remembers the old type
if entry.type_ is not None:
if entry.type_ != old_type:
syntax_error_func_type_mismatch(lineno, entry)
else:
entry.type_ = old_type
else:
entry.params_size = 0 # Size of parameters
entry.locals_size = 0 # Size of local variables
return entry | python | def declare_func(self, id_, lineno, type_=None):
""" Declares a function in the current scope.
Checks whether the id exist or not (error if exists).
And creates the entry at the symbol table.
"""
if not self.check_class(id_, 'function', lineno):
entry = self.get_entry(id_) # Must not exist or have _class = None or Function and declared = False
an = 'an' if entry.class_.lower()[0] in 'aeio' else 'a'
syntax_error(lineno, "'%s' already declared as %s %s at %i" % (id_, an, entry.class_, entry.lineno))
return None
entry = self.get_entry(id_) # Must not exist or have _class = None or Function and declared = False
if entry is not None:
if entry.declared and not entry.forwarded:
syntax_error(lineno, "Duplicate function name '%s', previously defined at %i" % (id_, entry.lineno))
return None
if entry.class_ != CLASS.unknown and entry.callable is False: # HINT: Must use is False here.
syntax_error_not_array_nor_func(lineno, id_)
return None
if id_[-1] in DEPRECATED_SUFFIXES and entry.type_ != self.basic_types[SUFFIX_TYPE[id_[-1]]]:
syntax_error_func_type_mismatch(lineno, entry)
if entry.token == 'VAR': # This was a function used in advance
symbols.VAR.to_function(entry, lineno=lineno)
entry.mangled = '%s_%s' % (self.mangle, entry.name) # HINT: mangle for nexted scopes
else:
entry = self.declare(id_, lineno, symbols.FUNCTION(id_, lineno, type_=type_))
if entry.forwarded:
entry.forwared = False # No longer forwarded
old_type = entry.type_ # Remembers the old type
if entry.type_ is not None:
if entry.type_ != old_type:
syntax_error_func_type_mismatch(lineno, entry)
else:
entry.type_ = old_type
else:
entry.params_size = 0 # Size of parameters
entry.locals_size = 0 # Size of local variables
return entry | [
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boriel/zxbasic | api/symboltable.py | SymbolTable.check_labels | def check_labels(self):
""" Checks if all the labels has been declared
"""
for entry in self.labels:
self.check_is_declared(entry.name, entry.lineno, CLASS.label) | python | def check_labels(self):
""" Checks if all the labels has been declared
"""
for entry in self.labels:
self.check_is_declared(entry.name, entry.lineno, CLASS.label) | [
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"""
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"""
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""" Returns symbol instances corresponding to variables
of the current scope.
"""
return [x for x in self[self.current_scope].values() if x.class_ == CLASS.var] | python | def vars_(self):
""" Returns symbol instances corresponding to variables
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"""
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""" Returns symbol instances corresponding to labels
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"""
return [x for x in self[self.current_scope].values() if x.class_ == CLASS.label] | python | def labels(self):
""" Returns symbol instances corresponding to labels
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boriel/zxbasic | api/symboltable.py | SymbolTable.types | def types(self):
""" Returns symbol instances corresponding to type declarations
within the current scope.
"""
return [x for x in self[self.current_scope].values() if isinstance(x, symbols.TYPE)] | python | def types(self):
""" Returns symbol instances corresponding to type declarations
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"""
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boriel/zxbasic | api/symboltable.py | SymbolTable.arrays | def arrays(self):
""" Returns symbol instances corresponding to arrays
of the current scope.
"""
return [x for x in self[self.current_scope].values() if x.class_ == CLASS.array] | python | def arrays(self):
""" Returns symbol instances corresponding to arrays
of the current scope.
"""
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boriel/zxbasic | api/symboltable.py | SymbolTable.functions | def functions(self):
""" Returns symbol instances corresponding to functions
of the current scope.
"""
return [x for x in self[self.current_scope].values() if x.class_ in
(CLASS.function, CLASS.sub)] | python | def functions(self):
""" Returns symbol instances corresponding to functions
of the current scope.
"""
return [x for x in self[self.current_scope].values() if x.class_ in
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boriel/zxbasic | api/symboltable.py | SymbolTable.aliases | def aliases(self):
""" Returns symbol instances corresponding to aliased vars.
"""
return [x for x in self[self.current_scope].values() if x.is_aliased] | python | def aliases(self):
""" Returns symbol instances corresponding to aliased vars.
"""
return [x for x in self[self.current_scope].values() if x.is_aliased] | [
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boriel/zxbasic | api/check.py | check_type | def check_type(lineno, type_list, arg):
""" Check arg's type is one in type_list, otherwise,
raises an error.
"""
if not isinstance(type_list, list):
type_list = [type_list]
if arg.type_ in type_list:
return True
if len(type_list) == 1:
syntax_error(lineno, "Wrong expression type '%s'. Expected '%s'" %
(arg.type_, type_list[0]))
else:
syntax_error(lineno, "Wrong expression type '%s'. Expected one of '%s'"
% (arg.type_, tuple(type_list)))
return False | python | def check_type(lineno, type_list, arg):
""" Check arg's type is one in type_list, otherwise,
raises an error.
"""
if not isinstance(type_list, list):
type_list = [type_list]
if arg.type_ in type_list:
return True
if len(type_list) == 1:
syntax_error(lineno, "Wrong expression type '%s'. Expected '%s'" %
(arg.type_, type_list[0]))
else:
syntax_error(lineno, "Wrong expression type '%s'. Expected one of '%s'"
% (arg.type_, tuple(type_list)))
return False | [
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boriel/zxbasic | api/check.py | check_is_declared_explicit | def check_is_declared_explicit(lineno, id_, classname='variable'):
""" Check if the current ID is already declared.
If not, triggers a "undeclared identifier" error,
if the --explicit command line flag is enabled (or #pragma
option strict is in use).
If not in strict mode, passes it silently.
"""
if not config.OPTIONS.explicit.value:
return True
entry = global_.SYMBOL_TABLE.check_is_declared(id_, lineno, classname)
return entry is not None | python | def check_is_declared_explicit(lineno, id_, classname='variable'):
""" Check if the current ID is already declared.
If not, triggers a "undeclared identifier" error,
if the --explicit command line flag is enabled (or #pragma
option strict is in use).
If not in strict mode, passes it silently.
"""
if not config.OPTIONS.explicit.value:
return True
entry = global_.SYMBOL_TABLE.check_is_declared(id_, lineno, classname)
return entry is not None | [
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boriel/zxbasic | api/check.py | check_call_arguments | def check_call_arguments(lineno, id_, args):
""" Check arguments against function signature.
Checks every argument in a function call against a function.
Returns True on success.
"""
if not global_.SYMBOL_TABLE.check_is_declared(id_, lineno, 'function'):
return False
if not global_.SYMBOL_TABLE.check_class(id_, CLASS.function, lineno):
return False
entry = global_.SYMBOL_TABLE.get_entry(id_)
if len(args) != len(entry.params):
c = 's' if len(entry.params) != 1 else ''
syntax_error(lineno, "Function '%s' takes %i parameter%s, not %i" %
(id_, len(entry.params), c, len(args)))
return False
for arg, param in zip(args, entry.params):
if not arg.typecast(param.type_):
return False
if param.byref:
from symbols.var import SymbolVAR
if not isinstance(arg.value, SymbolVAR):
syntax_error(lineno, "Expected a variable name, not an "
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return False
if arg.class_ not in (CLASS.var, CLASS.array):
syntax_error(lineno, "Expected a variable or array name "
"(parameter By Reference)")
return False
arg.byref = True
if entry.forwarded: # The function / sub was DECLARED but not implemented
syntax_error(lineno, "%s '%s' declared but not implemented" % (CLASS.to_string(entry.class_), entry.name))
return False
return True | python | def check_call_arguments(lineno, id_, args):
""" Check arguments against function signature.
Checks every argument in a function call against a function.
Returns True on success.
"""
if not global_.SYMBOL_TABLE.check_is_declared(id_, lineno, 'function'):
return False
if not global_.SYMBOL_TABLE.check_class(id_, CLASS.function, lineno):
return False
entry = global_.SYMBOL_TABLE.get_entry(id_)
if len(args) != len(entry.params):
c = 's' if len(entry.params) != 1 else ''
syntax_error(lineno, "Function '%s' takes %i parameter%s, not %i" %
(id_, len(entry.params), c, len(args)))
return False
for arg, param in zip(args, entry.params):
if not arg.typecast(param.type_):
return False
if param.byref:
from symbols.var import SymbolVAR
if not isinstance(arg.value, SymbolVAR):
syntax_error(lineno, "Expected a variable name, not an "
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return False
if arg.class_ not in (CLASS.var, CLASS.array):
syntax_error(lineno, "Expected a variable or array name "
"(parameter By Reference)")
return False
arg.byref = True
if entry.forwarded: # The function / sub was DECLARED but not implemented
syntax_error(lineno, "%s '%s' declared but not implemented" % (CLASS.to_string(entry.class_), entry.name))
return False
return True | [
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boriel/zxbasic | api/check.py | check_pending_calls | def check_pending_calls():
""" Calls the above function for each pending call of the current scope
level
"""
result = True
# Check for functions defined after calls (parametres, etc)
for id_, params, lineno in global_.FUNCTION_CALLS:
result = result and check_call_arguments(lineno, id_, params)
return result | python | def check_pending_calls():
""" Calls the above function for each pending call of the current scope
level
"""
result = True
# Check for functions defined after calls (parametres, etc)
for id_, params, lineno in global_.FUNCTION_CALLS:
result = result and check_call_arguments(lineno, id_, params)
return result | [
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boriel/zxbasic | api/check.py | check_pending_labels | def check_pending_labels(ast):
""" Iteratively traverses the node looking for ID with no class set,
marks them as labels, and check they've been declared.
This way we avoid stack overflow for high line-numbered listings.
"""
result = True
visited = set()
pending = [ast]
while pending:
node = pending.pop()
if node is None or node in visited: # Avoid recursive infinite-loop
continue
visited.add(node)
for x in node.children:
pending.append(x)
if node.token != 'VAR' or (node.token == 'VAR' and node.class_ is not CLASS.unknown):
continue
tmp = global_.SYMBOL_TABLE.get_entry(node.name)
if tmp is None or tmp.class_ is CLASS.unknown:
syntax_error(node.lineno, 'Undeclared identifier "%s"'
% node.name)
else:
assert tmp.class_ == CLASS.label
node.to_label(node)
result = result and tmp is not None
return result | python | def check_pending_labels(ast):
""" Iteratively traverses the node looking for ID with no class set,
marks them as labels, and check they've been declared.
This way we avoid stack overflow for high line-numbered listings.
"""
result = True
visited = set()
pending = [ast]
while pending:
node = pending.pop()
if node is None or node in visited: # Avoid recursive infinite-loop
continue
visited.add(node)
for x in node.children:
pending.append(x)
if node.token != 'VAR' or (node.token == 'VAR' and node.class_ is not CLASS.unknown):
continue
tmp = global_.SYMBOL_TABLE.get_entry(node.name)
if tmp is None or tmp.class_ is CLASS.unknown:
syntax_error(node.lineno, 'Undeclared identifier "%s"'
% node.name)
else:
assert tmp.class_ == CLASS.label
node.to_label(node)
result = result and tmp is not None
return result | [
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boriel/zxbasic | api/check.py | check_and_make_label | def check_and_make_label(lbl, lineno):
""" Checks if the given label (or line number) is valid and, if so,
returns a label object.
:param lbl: Line number of label (string)
:param lineno: Line number in the basic source code for error reporting
:return: Label object or None if error.
"""
if isinstance(lbl, float):
if lbl == int(lbl):
id_ = str(int(lbl))
else:
syntax_error(lineno, 'Line numbers must be integers.')
return None
else:
id_ = lbl
return global_.SYMBOL_TABLE.access_label(id_, lineno) | python | def check_and_make_label(lbl, lineno):
""" Checks if the given label (or line number) is valid and, if so,
returns a label object.
:param lbl: Line number of label (string)
:param lineno: Line number in the basic source code for error reporting
:return: Label object or None if error.
"""
if isinstance(lbl, float):
if lbl == int(lbl):
id_ = str(int(lbl))
else:
syntax_error(lineno, 'Line numbers must be integers.')
return None
else:
id_ = lbl
return global_.SYMBOL_TABLE.access_label(id_, lineno) | [
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boriel/zxbasic | api/check.py | is_null | def is_null(*symbols):
""" True if no nodes or all the given nodes are either
None, NOP or empty blocks. For blocks this applies recursively
"""
from symbols.symbol_ import Symbol
for sym in symbols:
if sym is None:
continue
if not isinstance(sym, Symbol):
return False
if sym.token == 'NOP':
continue
if sym.token == 'BLOCK':
if not is_null(*sym.children):
return False
continue
return False
return True | python | def is_null(*symbols):
""" True if no nodes or all the given nodes are either
None, NOP or empty blocks. For blocks this applies recursively
"""
from symbols.symbol_ import Symbol
for sym in symbols:
if sym is None:
continue
if not isinstance(sym, Symbol):
return False
if sym.token == 'NOP':
continue
if sym.token == 'BLOCK':
if not is_null(*sym.children):
return False
continue
return False
return True | [
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boriel/zxbasic | api/check.py | is_SYMBOL | def is_SYMBOL(token, *symbols):
""" Returns True if ALL of the given argument are AST nodes
of the given token (e.g. 'BINARY')
"""
from symbols.symbol_ import Symbol
assert all(isinstance(x, Symbol) for x in symbols)
for sym in symbols:
if sym.token != token:
return False
return True | python | def is_SYMBOL(token, *symbols):
""" Returns True if ALL of the given argument are AST nodes
of the given token (e.g. 'BINARY')
"""
from symbols.symbol_ import Symbol
assert all(isinstance(x, Symbol) for x in symbols)
for sym in symbols:
if sym.token != token:
return False
return True | [
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boriel/zxbasic | api/check.py | is_const | def is_const(*p):
""" A constant in the program, like CONST a = 5
"""
return is_SYMBOL('VAR', *p) and all(x.class_ == CLASS.const for x in p) | python | def is_const(*p):
""" A constant in the program, like CONST a = 5
"""
return is_SYMBOL('VAR', *p) and all(x.class_ == CLASS.const for x in p) | [
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boriel/zxbasic | api/check.py | is_static | def is_static(*p):
""" A static value (does not change at runtime)
which is known at compile time
"""
return all(is_CONST(x) or
is_number(x) or
is_const(x)
for x in p) | python | def is_static(*p):
""" A static value (does not change at runtime)
which is known at compile time
"""
return all(is_CONST(x) or
is_number(x) or
is_const(x)
for x in p) | [
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boriel/zxbasic | api/check.py | is_number | def is_number(*p):
""" Returns True if ALL of the arguments are AST nodes
containing NUMBER or numeric CONSTANTS
"""
try:
for i in p:
if i.token != 'NUMBER' and (i.token != 'ID' or i.class_ != CLASS.const):
return False
return True
except:
pass
return False | python | def is_number(*p):
""" Returns True if ALL of the arguments are AST nodes
containing NUMBER or numeric CONSTANTS
"""
try:
for i in p:
if i.token != 'NUMBER' and (i.token != 'ID' or i.class_ != CLASS.const):
return False
return True
except:
pass
return False | [
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boriel/zxbasic | api/check.py | is_unsigned | def is_unsigned(*p):
""" Returns false unless all types in p are unsigned
"""
from symbols.type_ import Type
try:
for i in p:
if not i.type_.is_basic or not Type.is_unsigned(i.type_):
return False
return True
except:
pass
return False | python | def is_unsigned(*p):
""" Returns false unless all types in p are unsigned
"""
from symbols.type_ import Type
try:
for i in p:
if not i.type_.is_basic or not Type.is_unsigned(i.type_):
return False
return True
except:
pass
return False | [
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boriel/zxbasic | api/check.py | is_type | def is_type(type_, *p):
""" True if all args have the same type
"""
try:
for i in p:
if i.type_ != type_:
return False
return True
except:
pass
return False | python | def is_type(type_, *p):
""" True if all args have the same type
"""
try:
for i in p:
if i.type_ != type_:
return False
return True
except:
pass
return False | [
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boriel/zxbasic | api/check.py | is_dynamic | def is_dynamic(*p): # TODO: Explain this better
""" True if all args are dynamic (e.g. Strings, dynamic arrays, etc)
The use a ptr (ref) and it might change during runtime.
"""
from symbols.type_ import Type
try:
for i in p:
if i.scope == SCOPE.global_ and i.is_basic and \
i.type_ != Type.string:
return False
return True
except:
pass
return False | python | def is_dynamic(*p): # TODO: Explain this better
""" True if all args are dynamic (e.g. Strings, dynamic arrays, etc)
The use a ptr (ref) and it might change during runtime.
"""
from symbols.type_ import Type
try:
for i in p:
if i.scope == SCOPE.global_ and i.is_basic and \
i.type_ != Type.string:
return False
return True
except:
pass
return False | [
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boriel/zxbasic | api/check.py | is_callable | def is_callable(*p):
""" True if all the args are functions and / or subroutines
"""
import symbols
return all(isinstance(x, symbols.FUNCTION) for x in p) | python | def is_callable(*p):
""" True if all the args are functions and / or subroutines
"""
import symbols
return all(isinstance(x, symbols.FUNCTION) for x in p) | [
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boriel/zxbasic | api/check.py | is_block_accessed | def is_block_accessed(block):
""" Returns True if a block is "accessed". A block of code is accessed if
it has a LABEL and it is used in a GOTO, GO SUB or @address access
:param block: A block of code (AST node)
:return: True / False depending if it has labels accessed or not
"""
if is_LABEL(block) and block.accessed:
return True
for child in block.children:
if not is_callable(child) and is_block_accessed(child):
return True
return False | python | def is_block_accessed(block):
""" Returns True if a block is "accessed". A block of code is accessed if
it has a LABEL and it is used in a GOTO, GO SUB or @address access
:param block: A block of code (AST node)
:return: True / False depending if it has labels accessed or not
"""
if is_LABEL(block) and block.accessed:
return True
for child in block.children:
if not is_callable(child) and is_block_accessed(child):
return True
return False | [
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] | train | https://github.com/boriel/zxbasic/blob/23b28db10e41117805bdb3c0f78543590853b132/api/check.py#L398-L411 |
boriel/zxbasic | api/check.py | common_type | def common_type(a, b):
""" Returns a type which is common for both a and b types.
Returns None if no common types allowed.
"""
from symbols.type_ import SymbolBASICTYPE as BASICTYPE
from symbols.type_ import Type as TYPE
from symbols.type_ import SymbolTYPE
if a is None or b is None:
return None
if not isinstance(a, SymbolTYPE):
a = a.type_
if not isinstance(b, SymbolTYPE):
b = b.type_
if a == b: # Both types are the same?
return a # Returns it
if a == TYPE.unknown and b == TYPE.unknown:
return BASICTYPE(global_.DEFAULT_TYPE)
if a == TYPE.unknown:
return b
if b == TYPE.unknown:
return a
# TODO: This will removed / expanded in the future
assert a.is_basic
assert b.is_basic
types = (a, b)
if TYPE.float_ in types:
return TYPE.float_
if TYPE.fixed in types:
return TYPE.fixed
if TYPE.string in types: # TODO: Check this ??
return TYPE.unknown
result = a if a.size > b.size else b
if not TYPE.is_unsigned(a) or not TYPE.is_unsigned(b):
result = TYPE.to_signed(result)
return result | python | def common_type(a, b):
""" Returns a type which is common for both a and b types.
Returns None if no common types allowed.
"""
from symbols.type_ import SymbolBASICTYPE as BASICTYPE
from symbols.type_ import Type as TYPE
from symbols.type_ import SymbolTYPE
if a is None or b is None:
return None
if not isinstance(a, SymbolTYPE):
a = a.type_
if not isinstance(b, SymbolTYPE):
b = b.type_
if a == b: # Both types are the same?
return a # Returns it
if a == TYPE.unknown and b == TYPE.unknown:
return BASICTYPE(global_.DEFAULT_TYPE)
if a == TYPE.unknown:
return b
if b == TYPE.unknown:
return a
# TODO: This will removed / expanded in the future
assert a.is_basic
assert b.is_basic
types = (a, b)
if TYPE.float_ in types:
return TYPE.float_
if TYPE.fixed in types:
return TYPE.fixed
if TYPE.string in types: # TODO: Check this ??
return TYPE.unknown
result = a if a.size > b.size else b
if not TYPE.is_unsigned(a) or not TYPE.is_unsigned(b):
result = TYPE.to_signed(result)
return result | [
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boriel/zxbasic | zxb.py | output | def output(memory, ofile=None):
""" Filters the output removing useless preprocessor #directives
and writes it to the given file or to the screen if no file is passed
"""
for m in memory:
m = m.rstrip('\r\n\t ') # Ensures no trailing newlines (might with upon includes)
if m and m[0] == '#': # Preprocessor directive?
if ofile is None:
print(m)
else:
ofile.write('%s\n' % m)
continue
# Prints a 4 spaces "tab" for non labels
if m and ':' not in m:
if ofile is None:
print(' '),
else:
ofile.write('\t')
if ofile is None:
print(m)
else:
ofile.write('%s\n' % m) | python | def output(memory, ofile=None):
""" Filters the output removing useless preprocessor #directives
and writes it to the given file or to the screen if no file is passed
"""
for m in memory:
m = m.rstrip('\r\n\t ') # Ensures no trailing newlines (might with upon includes)
if m and m[0] == '#': # Preprocessor directive?
if ofile is None:
print(m)
else:
ofile.write('%s\n' % m)
continue
# Prints a 4 spaces "tab" for non labels
if m and ':' not in m:
if ofile is None:
print(' '),
else:
ofile.write('\t')
if ofile is None:
print(m)
else:
ofile.write('%s\n' % m) | [
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boriel/zxbasic | zxb.py | main | def main(args=None):
""" Entry point when executed from command line.
You can use zxb.py as a module with import, and this
function won't be executed.
"""
api.config.init()
zxbpp.init()
zxbparser.init()
arch.zx48k.backend.init()
arch.zx48k.Translator.reset()
asmparse.init()
# ------------------------------------------------------------
# Command line parsing
# ------------------------------------------------------------
parser = argparse.ArgumentParser(prog='zxb')
parser.add_argument('PROGRAM', type=str,
help='BASIC program file')
parser.add_argument('-d', '--debug', dest='debug', default=OPTIONS.Debug.value, action='count',
help='Enable verbosity/debugging output. Additional -d increase verbosity/debug level')
parser.add_argument('-O', '--optimize', type=int, default=OPTIONS.optimization.value,
help='Sets optimization level. '
'0 = None (default level is {0})'.format(OPTIONS.optimization.value))
parser.add_argument('-o', '--output', type=str, dest='output_file', default=None,
help='Sets output file. Default is input filename with .bin extension')
parser.add_argument('-T', '--tzx', action='store_true',
help="Sets output format to tzx (default is .bin)")
parser.add_argument('-t', '--tap', action='store_true',
help="Sets output format to tap (default is .bin)")
parser.add_argument('-B', '--BASIC', action='store_true', dest='basic',
help="Creates a BASIC loader which loads the rest of the CODE. Requires -T ot -t")
parser.add_argument('-a', '--autorun', action='store_true',
help="Sets the program to be run once loaded")
parser.add_argument('-A', '--asm', action='store_true',
help="Sets output format to asm")
parser.add_argument('-S', '--org', type=str, default=str(OPTIONS.org.value),
help="Start of machine code. By default %i" % OPTIONS.org.value)
parser.add_argument('-e', '--errmsg', type=str, dest='stderr', default=OPTIONS.StdErrFileName.value,
help='Error messages file (standard error console by default)')
parser.add_argument('--array-base', type=int, default=OPTIONS.array_base.value,
help='Default lower index for arrays ({0} by default)'.format(OPTIONS.array_base.value))
parser.add_argument('--string-base', type=int, default=OPTIONS.string_base.value,
help='Default lower index for strings ({0} by default)'.format(OPTIONS.array_base.value))
parser.add_argument('-Z', '--sinclair', action='store_true',
help='Enable by default some more original ZX Spectrum Sinclair BASIC features: ATTR, SCREEN$, '
'POINT')
parser.add_argument('-H', '--heap-size', type=int, default=OPTIONS.heap_size.value,
help='Sets heap size in bytes (default {0} bytes)'.format(OPTIONS.heap_size.value))
parser.add_argument('--debug-memory', action='store_true',
help='Enables out-of-memory debug')
parser.add_argument('--debug-array', action='store_true',
help='Enables array boundary checking')
parser.add_argument('--strict-bool', action='store_true',
help='Enforce boolean values to be 0 or 1')
parser.add_argument('--enable-break', action='store_true',
help='Enables program execution BREAK detection')
parser.add_argument('-E', '--emit-backend', action='store_true',
help='Emits backend code instead of ASM or binary')
parser.add_argument('--explicit', action='store_true',
help='Requires all variables and functions to be declared before used')
parser.add_argument('-D', '--define', type=str, dest='defines', action='append',
help='Defines de given macro. Eg. -D MYDEBUG or -D NAME=Value')
parser.add_argument('-M', '--mmap', type=str, dest='memory_map', default=None,
help='Generate label memory map')
parser.add_argument('-i', '--ignore-case', action='store_true',
help='Ignore case. Makes variable names are case insensitive')
parser.add_argument('-I', '--include-path', type=str, default='',
help='Add colon separated list of directories to add to include path. e.g. -I dir1:dir2')
parser.add_argument('--strict', action='store_true',
help='Enables strict mode. Force explicit type declaration')
parser.add_argument('--headerless', action='store_true',
help='Header-less mode: omit asm prologue and epilogue')
parser.add_argument('--version', action='version', version='%(prog)s {0}'.format(VERSION))
parser.add_argument('--parse-only', action='store_true',
help='Only parses to check for syntax and semantic errors')
parser.add_argument('--append-binary', default=[], action='append',
help='Appends binary to tape file (only works with -t or -T)')
parser.add_argument('--append-headless-binary', default=[], action='append',
help='Appends binary to tape file (only works with -t or -T)')
options = parser.parse_args(args=args)
# ------------------------------------------------------------
# Setting of internal parameters according to command line
# ------------------------------------------------------------
OPTIONS.Debug.value = options.debug
OPTIONS.optimization.value = options.optimize
OPTIONS.outputFileName.value = options.output_file
OPTIONS.StdErrFileName.value = options.stderr
OPTIONS.array_base.value = options.array_base
OPTIONS.string_base.value = options.string_base
OPTIONS.Sinclair.value = options.sinclair
OPTIONS.heap_size.value = options.heap_size
OPTIONS.memoryCheck.value = options.debug_memory
OPTIONS.strictBool.value = options.strict_bool or OPTIONS.Sinclair.value
OPTIONS.arrayCheck.value = options.debug_array
OPTIONS.emitBackend.value = options.emit_backend
OPTIONS.enableBreak.value = options.enable_break
OPTIONS.explicit.value = options.explicit
OPTIONS.memory_map.value = options.memory_map
OPTIONS.strict.value = options.strict
OPTIONS.headerless.value = options.headerless
OPTIONS.org.value = api.utils.parse_int(options.org)
if OPTIONS.org.value is None:
parser.error("Invalid --org option '{}'".format(options.org))
if options.defines:
for i in options.defines:
name, val = tuple(i.split('=', 1))
OPTIONS.__DEFINES.value[name] = val
zxbpp.ID_TABLE.define(name, lineno=0)
if OPTIONS.Sinclair.value:
OPTIONS.array_base.value = 1
OPTIONS.string_base.value = 1
OPTIONS.strictBool.value = True
OPTIONS.case_insensitive.value = True
if options.ignore_case:
OPTIONS.case_insensitive.value = True
debug.ENABLED = OPTIONS.Debug.value
if int(options.tzx) + int(options.tap) + int(options.asm) + int(options.emit_backend) + \
int(options.parse_only) > 1:
parser.error("Options --tap, --tzx, --emit-backend, --parse-only and --asm are mutually exclusive")
return 3
if options.basic and not options.tzx and not options.tap:
parser.error('Option --BASIC and --autorun requires --tzx or tap format')
return 4
if options.append_binary and not options.tzx and not options.tap:
parser.error('Option --append-binary needs either --tap or --tzx')
return 5
OPTIONS.use_loader.value = options.basic
OPTIONS.autorun.value = options.autorun
if options.tzx:
OPTIONS.output_file_type.value = 'tzx'
elif options.tap:
OPTIONS.output_file_type.value = 'tap'
elif options.asm:
OPTIONS.output_file_type.value = 'asm'
elif options.emit_backend:
OPTIONS.output_file_type.value = 'ic'
args = [options.PROGRAM]
if not os.path.exists(options.PROGRAM):
parser.error("No such file or directory: '%s'" % args[0])
return 2
if OPTIONS.memoryCheck.value:
OPTIONS.__DEFINES.value['__MEMORY_CHECK__'] = ''
zxbpp.ID_TABLE.define('__MEMORY_CHECK__', lineno=0)
if OPTIONS.arrayCheck.value:
OPTIONS.__DEFINES.value['__CHECK_ARRAY_BOUNDARY__'] = ''
zxbpp.ID_TABLE.define('__CHECK_ARRAY_BOUNDARY__', lineno=0)
OPTIONS.include_path.value = options.include_path
OPTIONS.inputFileName.value = zxbparser.FILENAME = \
os.path.basename(args[0])
if not OPTIONS.outputFileName.value:
OPTIONS.outputFileName.value = \
os.path.splitext(os.path.basename(OPTIONS.inputFileName.value))[0] + os.path.extsep + \
OPTIONS.output_file_type.value
if OPTIONS.StdErrFileName.value:
OPTIONS.stderr.value = open_file(OPTIONS.StdErrFileName.value, 'wt', 'utf-8')
zxbpp.setMode('basic')
zxbpp.main(args)
if gl.has_errors:
debug.__DEBUG__("exiting due to errors.")
return 1 # Exit with errors
input_ = zxbpp.OUTPUT
zxbparser.parser.parse(input_, lexer=zxblex.lexer, tracking=True,
debug=(OPTIONS.Debug.value > 2))
if gl.has_errors:
debug.__DEBUG__("exiting due to errors.")
return 1 # Exit with errors
# Optimizations
optimizer = api.optimize.OptimizerVisitor()
optimizer.visit(zxbparser.ast)
# Emits intermediate code
translator = arch.zx48k.Translator()
translator.visit(zxbparser.ast)
if gl.DATA_IS_USED:
gl.FUNCTIONS.extend(gl.DATA_FUNCTIONS)
# This will fill MEMORY with pending functions
func_visitor = arch.zx48k.FunctionTranslator(gl.FUNCTIONS)
func_visitor.start()
# Emits data lines
translator.emit_data_blocks()
# Emits default constant strings
translator.emit_strings()
# Emits jump tables
translator.emit_jump_tables()
if OPTIONS.emitBackend.value:
with open_file(OPTIONS.outputFileName.value, 'wt', 'utf-8') as output_file:
for quad in translator.dumpMemory(backend.MEMORY):
output_file.write(str(quad) + '\n')
backend.MEMORY[:] = [] # Empties memory
# This will fill MEMORY with global declared variables
translator = arch.zx48k.VarTranslator()
translator.visit(zxbparser.data_ast)
for quad in translator.dumpMemory(backend.MEMORY):
output_file.write(str(quad) + '\n')
return 0 # Exit success
# Join all lines into a single string and ensures an INTRO at end of file
asm_output = backend.emit(backend.MEMORY)
asm_output = optimize(asm_output) + '\n'
asm_output = asm_output.split('\n')
for i in range(len(asm_output)):
tmp = backend.ASMS.get(asm_output[i], None)
if tmp is not None:
asm_output[i] = '\n'.join(tmp)
asm_output = '\n'.join(asm_output)
# Now filter them against the preprocessor again
zxbpp.setMode('asm')
zxbpp.OUTPUT = ''
zxbpp.filter_(asm_output, args[0])
# Now output the result
asm_output = zxbpp.OUTPUT.split('\n')
get_inits(asm_output) # Find out remaining inits
backend.MEMORY[:] = []
# This will fill MEMORY with global declared variables
translator = arch.zx48k.VarTranslator()
translator.visit(zxbparser.data_ast)
if gl.has_errors:
debug.__DEBUG__("exiting due to errors.")
return 1 # Exit with errors
tmp = [x for x in backend.emit(backend.MEMORY) if x.strip()[0] != '#']
asm_output += tmp
asm_output = backend.emit_start() + asm_output
asm_output += backend.emit_end(asm_output)
if options.asm: # Only output assembler file
with open_file(OPTIONS.outputFileName.value, 'wt', 'utf-8') as output_file:
output(asm_output, output_file)
elif not options.parse_only:
fout = StringIO()
output(asm_output, fout)
asmparse.assemble(fout.getvalue())
fout.close()
asmparse.generate_binary(OPTIONS.outputFileName.value, OPTIONS.output_file_type.value,
binary_files=options.append_binary,
headless_binary_files=options.append_headless_binary)
if gl.has_errors:
return 5 # Error in assembly
if OPTIONS.memory_map.value:
with open_file(OPTIONS.memory_map.value, 'wt', 'utf-8') as f:
f.write(asmparse.MEMORY.memory_map)
return gl.has_errors | python | def main(args=None):
""" Entry point when executed from command line.
You can use zxb.py as a module with import, and this
function won't be executed.
"""
api.config.init()
zxbpp.init()
zxbparser.init()
arch.zx48k.backend.init()
arch.zx48k.Translator.reset()
asmparse.init()
# ------------------------------------------------------------
# Command line parsing
# ------------------------------------------------------------
parser = argparse.ArgumentParser(prog='zxb')
parser.add_argument('PROGRAM', type=str,
help='BASIC program file')
parser.add_argument('-d', '--debug', dest='debug', default=OPTIONS.Debug.value, action='count',
help='Enable verbosity/debugging output. Additional -d increase verbosity/debug level')
parser.add_argument('-O', '--optimize', type=int, default=OPTIONS.optimization.value,
help='Sets optimization level. '
'0 = None (default level is {0})'.format(OPTIONS.optimization.value))
parser.add_argument('-o', '--output', type=str, dest='output_file', default=None,
help='Sets output file. Default is input filename with .bin extension')
parser.add_argument('-T', '--tzx', action='store_true',
help="Sets output format to tzx (default is .bin)")
parser.add_argument('-t', '--tap', action='store_true',
help="Sets output format to tap (default is .bin)")
parser.add_argument('-B', '--BASIC', action='store_true', dest='basic',
help="Creates a BASIC loader which loads the rest of the CODE. Requires -T ot -t")
parser.add_argument('-a', '--autorun', action='store_true',
help="Sets the program to be run once loaded")
parser.add_argument('-A', '--asm', action='store_true',
help="Sets output format to asm")
parser.add_argument('-S', '--org', type=str, default=str(OPTIONS.org.value),
help="Start of machine code. By default %i" % OPTIONS.org.value)
parser.add_argument('-e', '--errmsg', type=str, dest='stderr', default=OPTIONS.StdErrFileName.value,
help='Error messages file (standard error console by default)')
parser.add_argument('--array-base', type=int, default=OPTIONS.array_base.value,
help='Default lower index for arrays ({0} by default)'.format(OPTIONS.array_base.value))
parser.add_argument('--string-base', type=int, default=OPTIONS.string_base.value,
help='Default lower index for strings ({0} by default)'.format(OPTIONS.array_base.value))
parser.add_argument('-Z', '--sinclair', action='store_true',
help='Enable by default some more original ZX Spectrum Sinclair BASIC features: ATTR, SCREEN$, '
'POINT')
parser.add_argument('-H', '--heap-size', type=int, default=OPTIONS.heap_size.value,
help='Sets heap size in bytes (default {0} bytes)'.format(OPTIONS.heap_size.value))
parser.add_argument('--debug-memory', action='store_true',
help='Enables out-of-memory debug')
parser.add_argument('--debug-array', action='store_true',
help='Enables array boundary checking')
parser.add_argument('--strict-bool', action='store_true',
help='Enforce boolean values to be 0 or 1')
parser.add_argument('--enable-break', action='store_true',
help='Enables program execution BREAK detection')
parser.add_argument('-E', '--emit-backend', action='store_true',
help='Emits backend code instead of ASM or binary')
parser.add_argument('--explicit', action='store_true',
help='Requires all variables and functions to be declared before used')
parser.add_argument('-D', '--define', type=str, dest='defines', action='append',
help='Defines de given macro. Eg. -D MYDEBUG or -D NAME=Value')
parser.add_argument('-M', '--mmap', type=str, dest='memory_map', default=None,
help='Generate label memory map')
parser.add_argument('-i', '--ignore-case', action='store_true',
help='Ignore case. Makes variable names are case insensitive')
parser.add_argument('-I', '--include-path', type=str, default='',
help='Add colon separated list of directories to add to include path. e.g. -I dir1:dir2')
parser.add_argument('--strict', action='store_true',
help='Enables strict mode. Force explicit type declaration')
parser.add_argument('--headerless', action='store_true',
help='Header-less mode: omit asm prologue and epilogue')
parser.add_argument('--version', action='version', version='%(prog)s {0}'.format(VERSION))
parser.add_argument('--parse-only', action='store_true',
help='Only parses to check for syntax and semantic errors')
parser.add_argument('--append-binary', default=[], action='append',
help='Appends binary to tape file (only works with -t or -T)')
parser.add_argument('--append-headless-binary', default=[], action='append',
help='Appends binary to tape file (only works with -t or -T)')
options = parser.parse_args(args=args)
# ------------------------------------------------------------
# Setting of internal parameters according to command line
# ------------------------------------------------------------
OPTIONS.Debug.value = options.debug
OPTIONS.optimization.value = options.optimize
OPTIONS.outputFileName.value = options.output_file
OPTIONS.StdErrFileName.value = options.stderr
OPTIONS.array_base.value = options.array_base
OPTIONS.string_base.value = options.string_base
OPTIONS.Sinclair.value = options.sinclair
OPTIONS.heap_size.value = options.heap_size
OPTIONS.memoryCheck.value = options.debug_memory
OPTIONS.strictBool.value = options.strict_bool or OPTIONS.Sinclair.value
OPTIONS.arrayCheck.value = options.debug_array
OPTIONS.emitBackend.value = options.emit_backend
OPTIONS.enableBreak.value = options.enable_break
OPTIONS.explicit.value = options.explicit
OPTIONS.memory_map.value = options.memory_map
OPTIONS.strict.value = options.strict
OPTIONS.headerless.value = options.headerless
OPTIONS.org.value = api.utils.parse_int(options.org)
if OPTIONS.org.value is None:
parser.error("Invalid --org option '{}'".format(options.org))
if options.defines:
for i in options.defines:
name, val = tuple(i.split('=', 1))
OPTIONS.__DEFINES.value[name] = val
zxbpp.ID_TABLE.define(name, lineno=0)
if OPTIONS.Sinclair.value:
OPTIONS.array_base.value = 1
OPTIONS.string_base.value = 1
OPTIONS.strictBool.value = True
OPTIONS.case_insensitive.value = True
if options.ignore_case:
OPTIONS.case_insensitive.value = True
debug.ENABLED = OPTIONS.Debug.value
if int(options.tzx) + int(options.tap) + int(options.asm) + int(options.emit_backend) + \
int(options.parse_only) > 1:
parser.error("Options --tap, --tzx, --emit-backend, --parse-only and --asm are mutually exclusive")
return 3
if options.basic and not options.tzx and not options.tap:
parser.error('Option --BASIC and --autorun requires --tzx or tap format')
return 4
if options.append_binary and not options.tzx and not options.tap:
parser.error('Option --append-binary needs either --tap or --tzx')
return 5
OPTIONS.use_loader.value = options.basic
OPTIONS.autorun.value = options.autorun
if options.tzx:
OPTIONS.output_file_type.value = 'tzx'
elif options.tap:
OPTIONS.output_file_type.value = 'tap'
elif options.asm:
OPTIONS.output_file_type.value = 'asm'
elif options.emit_backend:
OPTIONS.output_file_type.value = 'ic'
args = [options.PROGRAM]
if not os.path.exists(options.PROGRAM):
parser.error("No such file or directory: '%s'" % args[0])
return 2
if OPTIONS.memoryCheck.value:
OPTIONS.__DEFINES.value['__MEMORY_CHECK__'] = ''
zxbpp.ID_TABLE.define('__MEMORY_CHECK__', lineno=0)
if OPTIONS.arrayCheck.value:
OPTIONS.__DEFINES.value['__CHECK_ARRAY_BOUNDARY__'] = ''
zxbpp.ID_TABLE.define('__CHECK_ARRAY_BOUNDARY__', lineno=0)
OPTIONS.include_path.value = options.include_path
OPTIONS.inputFileName.value = zxbparser.FILENAME = \
os.path.basename(args[0])
if not OPTIONS.outputFileName.value:
OPTIONS.outputFileName.value = \
os.path.splitext(os.path.basename(OPTIONS.inputFileName.value))[0] + os.path.extsep + \
OPTIONS.output_file_type.value
if OPTIONS.StdErrFileName.value:
OPTIONS.stderr.value = open_file(OPTIONS.StdErrFileName.value, 'wt', 'utf-8')
zxbpp.setMode('basic')
zxbpp.main(args)
if gl.has_errors:
debug.__DEBUG__("exiting due to errors.")
return 1 # Exit with errors
input_ = zxbpp.OUTPUT
zxbparser.parser.parse(input_, lexer=zxblex.lexer, tracking=True,
debug=(OPTIONS.Debug.value > 2))
if gl.has_errors:
debug.__DEBUG__("exiting due to errors.")
return 1 # Exit with errors
# Optimizations
optimizer = api.optimize.OptimizerVisitor()
optimizer.visit(zxbparser.ast)
# Emits intermediate code
translator = arch.zx48k.Translator()
translator.visit(zxbparser.ast)
if gl.DATA_IS_USED:
gl.FUNCTIONS.extend(gl.DATA_FUNCTIONS)
# This will fill MEMORY with pending functions
func_visitor = arch.zx48k.FunctionTranslator(gl.FUNCTIONS)
func_visitor.start()
# Emits data lines
translator.emit_data_blocks()
# Emits default constant strings
translator.emit_strings()
# Emits jump tables
translator.emit_jump_tables()
if OPTIONS.emitBackend.value:
with open_file(OPTIONS.outputFileName.value, 'wt', 'utf-8') as output_file:
for quad in translator.dumpMemory(backend.MEMORY):
output_file.write(str(quad) + '\n')
backend.MEMORY[:] = [] # Empties memory
# This will fill MEMORY with global declared variables
translator = arch.zx48k.VarTranslator()
translator.visit(zxbparser.data_ast)
for quad in translator.dumpMemory(backend.MEMORY):
output_file.write(str(quad) + '\n')
return 0 # Exit success
# Join all lines into a single string and ensures an INTRO at end of file
asm_output = backend.emit(backend.MEMORY)
asm_output = optimize(asm_output) + '\n'
asm_output = asm_output.split('\n')
for i in range(len(asm_output)):
tmp = backend.ASMS.get(asm_output[i], None)
if tmp is not None:
asm_output[i] = '\n'.join(tmp)
asm_output = '\n'.join(asm_output)
# Now filter them against the preprocessor again
zxbpp.setMode('asm')
zxbpp.OUTPUT = ''
zxbpp.filter_(asm_output, args[0])
# Now output the result
asm_output = zxbpp.OUTPUT.split('\n')
get_inits(asm_output) # Find out remaining inits
backend.MEMORY[:] = []
# This will fill MEMORY with global declared variables
translator = arch.zx48k.VarTranslator()
translator.visit(zxbparser.data_ast)
if gl.has_errors:
debug.__DEBUG__("exiting due to errors.")
return 1 # Exit with errors
tmp = [x for x in backend.emit(backend.MEMORY) if x.strip()[0] != '#']
asm_output += tmp
asm_output = backend.emit_start() + asm_output
asm_output += backend.emit_end(asm_output)
if options.asm: # Only output assembler file
with open_file(OPTIONS.outputFileName.value, 'wt', 'utf-8') as output_file:
output(asm_output, output_file)
elif not options.parse_only:
fout = StringIO()
output(asm_output, fout)
asmparse.assemble(fout.getvalue())
fout.close()
asmparse.generate_binary(OPTIONS.outputFileName.value, OPTIONS.output_file_type.value,
binary_files=options.append_binary,
headless_binary_files=options.append_headless_binary)
if gl.has_errors:
return 5 # Error in assembly
if OPTIONS.memory_map.value:
with open_file(OPTIONS.memory_map.value, 'wt', 'utf-8') as f:
f.write(asmparse.MEMORY.memory_map)
return gl.has_errors | [
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boriel/zxbasic | arch/zx48k/backend/__16bit.py | _16bit_oper | def _16bit_oper(op1, op2=None, reversed=False):
''' Returns pop sequence for 16 bits operands
1st operand in HL, 2nd operand in DE
For subtraction, division, etc. you can swap operators extraction order
by setting reversed to True
'''
output = []
if op1 is not None:
op1 = str(op1) # always to str
if op2 is not None:
op2 = str(op2) # always to str
if op2 is not None and reversed:
op1, op2 = op2, op1
op = op1
indirect = (op[0] == '*')
if indirect:
op = op[1:]
immediate = (op[0] == '#')
if immediate:
op = op[1:]
if is_int(op):
op = int(op)
if indirect:
output.append('ld hl, (%i)' % op)
else:
output.append('ld hl, %i' % int16(op))
else:
if immediate:
if indirect:
output.append('ld hl, (%s)' % op)
else:
output.append('ld hl, %s' % op)
else:
if op[0] == '_':
output.append('ld hl, (%s)' % op)
else:
output.append('pop hl')
if indirect:
output.append('ld a, (hl)')
output.append('inc hl')
output.append('ld h, (hl)')
output.append('ld l, a')
if op2 is None:
return output
if not reversed:
tmp = output
output = []
op = op2
indirect = (op[0] == '*')
if indirect:
op = op[1:]
immediate = (op[0] == '#')
if immediate:
op = op[1:]
if is_int(op):
op = int(op)
if indirect:
output.append('ld de, (%i)' % op)
else:
output.append('ld de, %i' % int16(op))
else:
if immediate:
output.append('ld de, %s' % op)
else:
if op[0] == '_':
output.append('ld de, (%s)' % op)
else:
output.append('pop de')
if indirect:
output.append('call __LOAD_DE_DE') # DE = (DE)
REQUIRES.add('lddede.asm')
if not reversed:
output.extend(tmp)
return output | python | def _16bit_oper(op1, op2=None, reversed=False):
''' Returns pop sequence for 16 bits operands
1st operand in HL, 2nd operand in DE
For subtraction, division, etc. you can swap operators extraction order
by setting reversed to True
'''
output = []
if op1 is not None:
op1 = str(op1) # always to str
if op2 is not None:
op2 = str(op2) # always to str
if op2 is not None and reversed:
op1, op2 = op2, op1
op = op1
indirect = (op[0] == '*')
if indirect:
op = op[1:]
immediate = (op[0] == '#')
if immediate:
op = op[1:]
if is_int(op):
op = int(op)
if indirect:
output.append('ld hl, (%i)' % op)
else:
output.append('ld hl, %i' % int16(op))
else:
if immediate:
if indirect:
output.append('ld hl, (%s)' % op)
else:
output.append('ld hl, %s' % op)
else:
if op[0] == '_':
output.append('ld hl, (%s)' % op)
else:
output.append('pop hl')
if indirect:
output.append('ld a, (hl)')
output.append('inc hl')
output.append('ld h, (hl)')
output.append('ld l, a')
if op2 is None:
return output
if not reversed:
tmp = output
output = []
op = op2
indirect = (op[0] == '*')
if indirect:
op = op[1:]
immediate = (op[0] == '#')
if immediate:
op = op[1:]
if is_int(op):
op = int(op)
if indirect:
output.append('ld de, (%i)' % op)
else:
output.append('ld de, %i' % int16(op))
else:
if immediate:
output.append('ld de, %s' % op)
else:
if op[0] == '_':
output.append('ld de, (%s)' % op)
else:
output.append('pop de')
if indirect:
output.append('call __LOAD_DE_DE') # DE = (DE)
REQUIRES.add('lddede.asm')
if not reversed:
output.extend(tmp)
return output | [
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1st operand in HL, 2nd operand in DE
For subtraction, division, etc. you can swap operators extraction order
by setting reversed to True | [
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boriel/zxbasic | arch/zx48k/backend/__16bit.py | _add16 | def _add16(ins):
''' Pops last 2 bytes from the stack and adds them.
Then push the result onto the stack.
Optimizations:
* If any of the operands is ZERO,
then do NOTHING: A + 0 = 0 + A = A
* If any of the operands is < 4, then
INC is used
* If any of the operands is > (65531) (-4), then
DEC is used
'''
op1, op2 = tuple(ins.quad[2:])
if _int_ops(op1, op2) is not None:
op1, op2 = _int_ops(op1, op2)
op2 = int16(op2)
output = _16bit_oper(op1)
if op2 == 0:
output.append('push hl')
return output # ADD HL, 0 => NOTHING
if op2 < 4:
output.extend(['inc hl'] * op2) # ADD HL, 2 ==> inc hl; inc hl
output.append('push hl')
return output
if op2 > 65531: # (between -4 and 0)
output.extend(['dec hl'] * (0x10000 - op2))
output.append('push hl')
return output
output.append('ld de, %i' % op2)
output.append('add hl, de')
output.append('push hl')
return output
if op2[0] == '_': # stack optimization
op1, op2 = op2, op1
output = _16bit_oper(op1, op2)
output.append('add hl, de')
output.append('push hl')
return output | python | def _add16(ins):
''' Pops last 2 bytes from the stack and adds them.
Then push the result onto the stack.
Optimizations:
* If any of the operands is ZERO,
then do NOTHING: A + 0 = 0 + A = A
* If any of the operands is < 4, then
INC is used
* If any of the operands is > (65531) (-4), then
DEC is used
'''
op1, op2 = tuple(ins.quad[2:])
if _int_ops(op1, op2) is not None:
op1, op2 = _int_ops(op1, op2)
op2 = int16(op2)
output = _16bit_oper(op1)
if op2 == 0:
output.append('push hl')
return output # ADD HL, 0 => NOTHING
if op2 < 4:
output.extend(['inc hl'] * op2) # ADD HL, 2 ==> inc hl; inc hl
output.append('push hl')
return output
if op2 > 65531: # (between -4 and 0)
output.extend(['dec hl'] * (0x10000 - op2))
output.append('push hl')
return output
output.append('ld de, %i' % op2)
output.append('add hl, de')
output.append('push hl')
return output
if op2[0] == '_': # stack optimization
op1, op2 = op2, op1
output = _16bit_oper(op1, op2)
output.append('add hl, de')
output.append('push hl')
return output | [
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* If any of the operands is < 4, then
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boriel/zxbasic | arch/zx48k/backend/__16bit.py | _sub16 | def _sub16(ins):
''' Pops last 2 words from the stack and subtract them.
Then push the result onto the stack. Top of the stack is
subtracted Top -1
Optimizations:
* If 2nd op is ZERO,
then do NOTHING: A - 0 = A
* If any of the operands is < 4, then
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* If any of the operands is > 65531 (-4..-1), then
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'''
op1, op2 = tuple(ins.quad[2:4])
if is_int(op2):
op = int16(op2)
output = _16bit_oper(op1)
if op == 0:
output.append('push hl')
return output
if op < 4:
output.extend(['dec hl'] * op)
output.append('push hl')
return output
if op > 65531:
output.extend(['inc hl'] * (0x10000 - op))
output.append('push hl')
return output
output.append('ld de, -%i' % op)
output.append('add hl, de')
output.append('push hl')
return output
if op2[0] == '_': # Optimization when 2nd operand is an id
rev = True
op1, op2 = op2, op1
else:
rev = False
output = _16bit_oper(op1, op2, rev)
output.append('or a')
output.append('sbc hl, de')
output.append('push hl')
return output | python | def _sub16(ins):
''' Pops last 2 words from the stack and subtract them.
Then push the result onto the stack. Top of the stack is
subtracted Top -1
Optimizations:
* If 2nd op is ZERO,
then do NOTHING: A - 0 = A
* If any of the operands is < 4, then
DEC is used
* If any of the operands is > 65531 (-4..-1), then
INC is used
'''
op1, op2 = tuple(ins.quad[2:4])
if is_int(op2):
op = int16(op2)
output = _16bit_oper(op1)
if op == 0:
output.append('push hl')
return output
if op < 4:
output.extend(['dec hl'] * op)
output.append('push hl')
return output
if op > 65531:
output.extend(['inc hl'] * (0x10000 - op))
output.append('push hl')
return output
output.append('ld de, -%i' % op)
output.append('add hl, de')
output.append('push hl')
return output
if op2[0] == '_': # Optimization when 2nd operand is an id
rev = True
op1, op2 = op2, op1
else:
rev = False
output = _16bit_oper(op1, op2, rev)
output.append('or a')
output.append('sbc hl, de')
output.append('push hl')
return output | [
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boriel/zxbasic | arch/zx48k/backend/__16bit.py | _mul16 | def _mul16(ins):
''' Multiplies tow last 16bit values on top of the stack and
and returns the value on top of the stack
Optimizations:
* If any of the ops is ZERO,
then do A = 0 ==> XOR A, cause A * 0 = 0 * A = 0
* If any ot the ops is ONE, do NOTHING
A * 1 = 1 * A = A
* If B is 2^n and B < 16 => Shift Right n
'''
op1, op2 = tuple(ins.quad[2:])
if _int_ops(op1, op2) is not None: # If any of the operands is constant
op1, op2 = _int_ops(op1, op2) # put the constant one the 2nd
output = _16bit_oper(op1)
if op2 == 0: # A * 0 = 0 * A = 0
if op1[0] in ('_', '$'):
output = [] # Optimization: Discard previous op if not from the stack
output.append('ld hl, 0')
output.append('push hl')
return output
if op2 == 1: # A * 1 = 1 * A == A => Do nothing
output.append('push hl')
return output
if op2 == 0xFFFF: # This is the same as (-1)
output.append('call __NEGHL')
output.append('push hl')
REQUIRES.add('neg16.asm')
return output
if is_2n(op2) and log2(op2) < 4:
output.extend(['add hl, hl'] * int(log2(op2)))
output.append('push hl')
return output
output.append('ld de, %i' % op2)
else:
if op2[0] == '_': # stack optimization
op1, op2 = op2, op1
output = _16bit_oper(op1, op2)
output.append('call __MUL16_FAST') # Inmmediate
output.append('push hl')
REQUIRES.add('mul16.asm')
return output | python | def _mul16(ins):
''' Multiplies tow last 16bit values on top of the stack and
and returns the value on top of the stack
Optimizations:
* If any of the ops is ZERO,
then do A = 0 ==> XOR A, cause A * 0 = 0 * A = 0
* If any ot the ops is ONE, do NOTHING
A * 1 = 1 * A = A
* If B is 2^n and B < 16 => Shift Right n
'''
op1, op2 = tuple(ins.quad[2:])
if _int_ops(op1, op2) is not None: # If any of the operands is constant
op1, op2 = _int_ops(op1, op2) # put the constant one the 2nd
output = _16bit_oper(op1)
if op2 == 0: # A * 0 = 0 * A = 0
if op1[0] in ('_', '$'):
output = [] # Optimization: Discard previous op if not from the stack
output.append('ld hl, 0')
output.append('push hl')
return output
if op2 == 1: # A * 1 = 1 * A == A => Do nothing
output.append('push hl')
return output
if op2 == 0xFFFF: # This is the same as (-1)
output.append('call __NEGHL')
output.append('push hl')
REQUIRES.add('neg16.asm')
return output
if is_2n(op2) and log2(op2) < 4:
output.extend(['add hl, hl'] * int(log2(op2)))
output.append('push hl')
return output
output.append('ld de, %i' % op2)
else:
if op2[0] == '_': # stack optimization
op1, op2 = op2, op1
output = _16bit_oper(op1, op2)
output.append('call __MUL16_FAST') # Inmmediate
output.append('push hl')
REQUIRES.add('mul16.asm')
return output | [
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Optimizations:
* If any of the ops is ZERO,
then do A = 0 ==> XOR A, cause A * 0 = 0 * A = 0
* If any ot the ops is ONE, do NOTHING
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boriel/zxbasic | arch/zx48k/backend/__16bit.py | _divu16 | def _divu16(ins):
''' Divides 2 16bit unsigned integers. The result is pushed onto the stack.
Optimizations:
* If 2nd op is 1 then
do nothing
* If 2nd op is 2 then
Shift Right Logical
'''
op1, op2 = tuple(ins.quad[2:])
if is_int(op1) and int(op1) == 0: # 0 / A = 0
if op2[0] in ('_', '$'):
output = [] # Optimization: Discard previous op if not from the stack
else:
output = _16bit_oper(op2) # Normalize stack
output.append('ld hl, 0')
output.append('push hl')
return output
if is_int(op2):
op = int16(op2)
output = _16bit_oper(op1)
if op2 == 0: # A * 0 = 0 * A = 0
if op1[0] in ('_', '$'):
output = [] # Optimization: Discard previous op if not from the stack
output.append('ld hl, 0')
output.append('push hl')
return output
if op == 1:
output.append('push hl')
return output
if op == 2:
output.append('srl h')
output.append('rr l')
output.append('push hl')
return output
output.append('ld de, %i' % op)
else:
if op2[0] == '_': # Optimization when 2nd operand is an id
rev = True
op1, op2 = op2, op1
else:
rev = False
output = _16bit_oper(op1, op2, rev)
output.append('call __DIVU16')
output.append('push hl')
REQUIRES.add('div16.asm')
return output | python | def _divu16(ins):
''' Divides 2 16bit unsigned integers. The result is pushed onto the stack.
Optimizations:
* If 2nd op is 1 then
do nothing
* If 2nd op is 2 then
Shift Right Logical
'''
op1, op2 = tuple(ins.quad[2:])
if is_int(op1) and int(op1) == 0: # 0 / A = 0
if op2[0] in ('_', '$'):
output = [] # Optimization: Discard previous op if not from the stack
else:
output = _16bit_oper(op2) # Normalize stack
output.append('ld hl, 0')
output.append('push hl')
return output
if is_int(op2):
op = int16(op2)
output = _16bit_oper(op1)
if op2 == 0: # A * 0 = 0 * A = 0
if op1[0] in ('_', '$'):
output = [] # Optimization: Discard previous op if not from the stack
output.append('ld hl, 0')
output.append('push hl')
return output
if op == 1:
output.append('push hl')
return output
if op == 2:
output.append('srl h')
output.append('rr l')
output.append('push hl')
return output
output.append('ld de, %i' % op)
else:
if op2[0] == '_': # Optimization when 2nd operand is an id
rev = True
op1, op2 = op2, op1
else:
rev = False
output = _16bit_oper(op1, op2, rev)
output.append('call __DIVU16')
output.append('push hl')
REQUIRES.add('div16.asm')
return output | [
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Optimizations:
* If 2nd op is 1 then
do nothing
* If 2nd op is 2 then
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boriel/zxbasic | arch/zx48k/backend/__16bit.py | _modu16 | def _modu16(ins):
''' Reminder of div. 2 16bit unsigned integers. The result is pushed onto the stack.
Optimizations:
* If 2nd operand is 1 => Return 0
* If 2nd operand = 2^n => do AND (2^n - 1)
'''
op1, op2 = tuple(ins.quad[2:])
if is_int(op2):
op2 = int16(op2)
output = _16bit_oper(op1)
if op2 == 1:
if op2[0] in ('_', '$'):
output = [] # Optimization: Discard previous op if not from the stack
output.append('ld hl, 0')
output.append('push hl')
return output
if is_2n(op2):
k = op2 - 1
if op2 > 255: # only affects H
output.append('ld a, h')
output.append('and %i' % (k >> 8))
output.append('ld h, a')
else:
output.append('ld h, 0') # High part goes 0
output.append('ld a, l')
output.append('and %i' % (k % 0xFF))
output.append('ld l, a')
output.append('push hl')
return output
output.append('ld de, %i' % op2)
else:
output = _16bit_oper(op1, op2)
output.append('call __MODU16')
output.append('push hl')
REQUIRES.add('div16.asm')
return output | python | def _modu16(ins):
''' Reminder of div. 2 16bit unsigned integers. The result is pushed onto the stack.
Optimizations:
* If 2nd operand is 1 => Return 0
* If 2nd operand = 2^n => do AND (2^n - 1)
'''
op1, op2 = tuple(ins.quad[2:])
if is_int(op2):
op2 = int16(op2)
output = _16bit_oper(op1)
if op2 == 1:
if op2[0] in ('_', '$'):
output = [] # Optimization: Discard previous op if not from the stack
output.append('ld hl, 0')
output.append('push hl')
return output
if is_2n(op2):
k = op2 - 1
if op2 > 255: # only affects H
output.append('ld a, h')
output.append('and %i' % (k >> 8))
output.append('ld h, a')
else:
output.append('ld h, 0') # High part goes 0
output.append('ld a, l')
output.append('and %i' % (k % 0xFF))
output.append('ld l, a')
output.append('push hl')
return output
output.append('ld de, %i' % op2)
else:
output = _16bit_oper(op1, op2)
output.append('call __MODU16')
output.append('push hl')
REQUIRES.add('div16.asm')
return output | [
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Optimizations:
* If 2nd operand is 1 => Return 0
* If 2nd operand = 2^n => do AND (2^n - 1) | [
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boriel/zxbasic | arch/zx48k/backend/__16bit.py | _ltu16 | def _ltu16(ins):
''' Compares & pops top 2 operands out of the stack, and checks
if the 1st operand < 2nd operand (top of the stack).
Pushes 0 if False, 1 if True.
16 bit unsigned version
'''
output = _16bit_oper(ins.quad[2], ins.quad[3])
output.append('or a')
output.append('sbc hl, de')
output.append('sbc a, a')
output.append('push af')
return output | python | def _ltu16(ins):
''' Compares & pops top 2 operands out of the stack, and checks
if the 1st operand < 2nd operand (top of the stack).
Pushes 0 if False, 1 if True.
16 bit unsigned version
'''
output = _16bit_oper(ins.quad[2], ins.quad[3])
output.append('or a')
output.append('sbc hl, de')
output.append('sbc a, a')
output.append('push af')
return output | [
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boriel/zxbasic | arch/zx48k/backend/__16bit.py | _lti16 | def _lti16(ins):
''' Compares & pops top 2 operands out of the stack, and checks
if the 1st operand < 2nd operand (top of the stack).
Pushes 0 if False, 1 if True.
16 bit signed version
'''
output = _16bit_oper(ins.quad[2], ins.quad[3])
output.append('call __LTI16')
output.append('push af')
REQUIRES.add('lti16.asm')
return output | python | def _lti16(ins):
''' Compares & pops top 2 operands out of the stack, and checks
if the 1st operand < 2nd operand (top of the stack).
Pushes 0 if False, 1 if True.
16 bit signed version
'''
output = _16bit_oper(ins.quad[2], ins.quad[3])
output.append('call __LTI16')
output.append('push af')
REQUIRES.add('lti16.asm')
return output | [
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boriel/zxbasic | arch/zx48k/backend/__16bit.py | _gtu16 | def _gtu16(ins):
''' Compares & pops top 2 operands out of the stack, and checks
if the 1st operand > 2nd operand (top of the stack).
Pushes 0 if False, 1 if True.
16 bit unsigned version
'''
output = _16bit_oper(ins.quad[2], ins.quad[3], reversed=True)
output.append('or a')
output.append('sbc hl, de')
output.append('sbc a, a')
output.append('push af')
return output | python | def _gtu16(ins):
''' Compares & pops top 2 operands out of the stack, and checks
if the 1st operand > 2nd operand (top of the stack).
Pushes 0 if False, 1 if True.
16 bit unsigned version
'''
output = _16bit_oper(ins.quad[2], ins.quad[3], reversed=True)
output.append('or a')
output.append('sbc hl, de')
output.append('sbc a, a')
output.append('push af')
return output | [
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boriel/zxbasic | arch/zx48k/backend/__16bit.py | _gti16 | def _gti16(ins):
''' Compares & pops top 2 operands out of the stack, and checks
if the 1st operand > 2nd operand (top of the stack).
Pushes 0 if False, 1 if True.
16 bit signed version
'''
output = _16bit_oper(ins.quad[2], ins.quad[3], reversed=True)
output.append('call __LTI16')
output.append('push af')
REQUIRES.add('lti16.asm')
return output | python | def _gti16(ins):
''' Compares & pops top 2 operands out of the stack, and checks
if the 1st operand > 2nd operand (top of the stack).
Pushes 0 if False, 1 if True.
16 bit signed version
'''
output = _16bit_oper(ins.quad[2], ins.quad[3], reversed=True)
output.append('call __LTI16')
output.append('push af')
REQUIRES.add('lti16.asm')
return output | [
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boriel/zxbasic | arch/zx48k/backend/__16bit.py | _leu16 | def _leu16(ins):
''' Compares & pops top 2 operands out of the stack, and checks
if the 1st operand <= 2nd operand (top of the stack).
Pushes 0 if False, 1 if True.
16 bit unsigned version
'''
output = _16bit_oper(ins.quad[2], ins.quad[3], reversed=True)
output.append('or a')
output.append('sbc hl, de') # Carry if A > B
output.append('ccf') # Negates the result => Carry if A <= B
output.append('sbc a, a')
output.append('push af')
return output | python | def _leu16(ins):
''' Compares & pops top 2 operands out of the stack, and checks
if the 1st operand <= 2nd operand (top of the stack).
Pushes 0 if False, 1 if True.
16 bit unsigned version
'''
output = _16bit_oper(ins.quad[2], ins.quad[3], reversed=True)
output.append('or a')
output.append('sbc hl, de') # Carry if A > B
output.append('ccf') # Negates the result => Carry if A <= B
output.append('sbc a, a')
output.append('push af')
return output | [
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boriel/zxbasic | arch/zx48k/backend/__16bit.py | _lei16 | def _lei16(ins):
''' Compares & pops top 2 operands out of the stack, and checks
if the 1st operand <= 2nd operand (top of the stack).
Pushes 0 if False, 1 if True.
16 bit signed version
'''
output = _16bit_oper(ins.quad[2], ins.quad[3])
output.append('call __LEI16')
output.append('push af')
REQUIRES.add('lei16.asm')
return output | python | def _lei16(ins):
''' Compares & pops top 2 operands out of the stack, and checks
if the 1st operand <= 2nd operand (top of the stack).
Pushes 0 if False, 1 if True.
16 bit signed version
'''
output = _16bit_oper(ins.quad[2], ins.quad[3])
output.append('call __LEI16')
output.append('push af')
REQUIRES.add('lei16.asm')
return output | [
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boriel/zxbasic | arch/zx48k/backend/__16bit.py | _geu16 | def _geu16(ins):
''' Compares & pops top 2 operands out of the stack, and checks
if the 1st operand >= 2nd operand (top of the stack).
Pushes 0 if False, 1 if True.
16 bit unsigned version
'''
output = _16bit_oper(ins.quad[2], ins.quad[3])
output.append('or a')
output.append('sbc hl, de')
output.append('ccf')
output.append('sbc a, a')
output.append('push af')
return output | python | def _geu16(ins):
''' Compares & pops top 2 operands out of the stack, and checks
if the 1st operand >= 2nd operand (top of the stack).
Pushes 0 if False, 1 if True.
16 bit unsigned version
'''
output = _16bit_oper(ins.quad[2], ins.quad[3])
output.append('or a')
output.append('sbc hl, de')
output.append('ccf')
output.append('sbc a, a')
output.append('push af')
return output | [
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boriel/zxbasic | arch/zx48k/backend/__16bit.py | _eq16 | def _eq16(ins):
''' Compares & pops top 2 operands out of the stack, and checks
if the 1st operand == 2nd operand (top of the stack).
Pushes 0 if False, 1 if True.
16 bit un/signed version
'''
output = _16bit_oper(ins.quad[2], ins.quad[3])
output.append('call __EQ16')
output.append('push af')
REQUIRES.add('eq16.asm')
return output | python | def _eq16(ins):
''' Compares & pops top 2 operands out of the stack, and checks
if the 1st operand == 2nd operand (top of the stack).
Pushes 0 if False, 1 if True.
16 bit un/signed version
'''
output = _16bit_oper(ins.quad[2], ins.quad[3])
output.append('call __EQ16')
output.append('push af')
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return output | [
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boriel/zxbasic | arch/zx48k/backend/__16bit.py | _ne16 | def _ne16(ins):
''' Compares & pops top 2 operands out of the stack, and checks
if the 1st operand != 2nd operand (top of the stack).
Pushes 0 if False, 1 if True.
16 bit un/signed version
'''
output = _16bit_oper(ins.quad[2], ins.quad[3])
output.append('or a') # Resets carry flag
output.append('sbc hl, de')
output.append('ld a, h')
output.append('or l')
output.append('push af')
return output | python | def _ne16(ins):
''' Compares & pops top 2 operands out of the stack, and checks
if the 1st operand != 2nd operand (top of the stack).
Pushes 0 if False, 1 if True.
16 bit un/signed version
'''
output = _16bit_oper(ins.quad[2], ins.quad[3])
output.append('or a') # Resets carry flag
output.append('sbc hl, de')
output.append('ld a, h')
output.append('or l')
output.append('push af')
return output | [
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boriel/zxbasic | arch/zx48k/backend/__16bit.py | _or16 | def _or16(ins):
''' Compares & pops top 2 operands out of the stack, and checks
if the 1st operand OR (logical) 2nd operand (top of the stack),
pushes 0 if False, 1 if True.
16 bit un/signed version
Optimizations:
If any of the operators are constants: Returns either 0 or
the other operand
'''
op1, op2 = tuple(ins.quad[2:])
if _int_ops(op1, op2) is not None:
op1, op2 = _int_ops(op1, op2)
if op2 == 0:
output = _16bit_oper(op1)
output.append('ld a, h')
output.append('or l') # Convert x to Boolean
output.append('push af')
return output # X or False = X
output = _16bit_oper(op1)
output.append('ld a, 0FFh') # X or True = True
output.append('push af')
return output
output = _16bit_oper(ins.quad[2], ins.quad[3])
output.append('ld a, h')
output.append('or l')
output.append('or d')
output.append('or e')
output.append('push af')
return output | python | def _or16(ins):
''' Compares & pops top 2 operands out of the stack, and checks
if the 1st operand OR (logical) 2nd operand (top of the stack),
pushes 0 if False, 1 if True.
16 bit un/signed version
Optimizations:
If any of the operators are constants: Returns either 0 or
the other operand
'''
op1, op2 = tuple(ins.quad[2:])
if _int_ops(op1, op2) is not None:
op1, op2 = _int_ops(op1, op2)
if op2 == 0:
output = _16bit_oper(op1)
output.append('ld a, h')
output.append('or l') # Convert x to Boolean
output.append('push af')
return output # X or False = X
output = _16bit_oper(op1)
output.append('ld a, 0FFh') # X or True = True
output.append('push af')
return output
output = _16bit_oper(ins.quad[2], ins.quad[3])
output.append('ld a, h')
output.append('or l')
output.append('or d')
output.append('or e')
output.append('push af')
return output | [
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boriel/zxbasic | arch/zx48k/backend/__16bit.py | _bor16 | def _bor16(ins):
''' Pops top 2 operands out of the stack, and performs
1st operand OR (bitwise) 2nd operand (top of the stack),
pushes result (16 bit in HL).
16 bit un/signed version
Optimizations:
If any of the operators are constants: Returns either 0 or
the other operand
'''
op1, op2 = tuple(ins.quad[2:])
if _int_ops(op1, op2) is not None:
op1, op2 = _int_ops(op1, op2)
output = _16bit_oper(op1)
if op2 == 0: # X | 0 = X
output.append('push hl')
return output
if op2 == 0xFFFF: # X & 0xFFFF = 0xFFFF
output.append('ld hl, 0FFFFh')
output.append('push hl')
return output
output = _16bit_oper(op1, op2)
output.append('call __BOR16')
output.append('push hl')
REQUIRES.add('bor16.asm')
return output | python | def _bor16(ins):
''' Pops top 2 operands out of the stack, and performs
1st operand OR (bitwise) 2nd operand (top of the stack),
pushes result (16 bit in HL).
16 bit un/signed version
Optimizations:
If any of the operators are constants: Returns either 0 or
the other operand
'''
op1, op2 = tuple(ins.quad[2:])
if _int_ops(op1, op2) is not None:
op1, op2 = _int_ops(op1, op2)
output = _16bit_oper(op1)
if op2 == 0: # X | 0 = X
output.append('push hl')
return output
if op2 == 0xFFFF: # X & 0xFFFF = 0xFFFF
output.append('ld hl, 0FFFFh')
output.append('push hl')
return output
output = _16bit_oper(op1, op2)
output.append('call __BOR16')
output.append('push hl')
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return output | [
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boriel/zxbasic | arch/zx48k/backend/__16bit.py | _not16 | def _not16(ins):
''' Negates top (Logical NOT) of the stack (16 bits in HL)
'''
output = _16bit_oper(ins.quad[2])
output.append('ld a, h')
output.append('or l')
output.append('sub 1')
output.append('sbc a, a')
output.append('push af')
return output | python | def _not16(ins):
''' Negates top (Logical NOT) of the stack (16 bits in HL)
'''
output = _16bit_oper(ins.quad[2])
output.append('ld a, h')
output.append('or l')
output.append('sub 1')
output.append('sbc a, a')
output.append('push af')
return output | [
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boriel/zxbasic | arch/zx48k/backend/__16bit.py | _bnot16 | def _bnot16(ins):
''' Negates top (Bitwise NOT) of the stack (16 bits in HL)
'''
output = _16bit_oper(ins.quad[2])
output.append('call __BNOT16')
output.append('push hl')
REQUIRES.add('bnot16.asm')
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''' Negates top (Bitwise NOT) of the stack (16 bits in HL)
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boriel/zxbasic | arch/zx48k/backend/__16bit.py | _neg16 | def _neg16(ins):
''' Negates top of the stack (16 bits in HL)
'''
output = _16bit_oper(ins.quad[2])
output.append('call __NEGHL')
output.append('push hl')
REQUIRES.add('neg16.asm')
return output | python | def _neg16(ins):
''' Negates top of the stack (16 bits in HL)
'''
output = _16bit_oper(ins.quad[2])
output.append('call __NEGHL')
output.append('push hl')
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boriel/zxbasic | arch/zx48k/backend/__16bit.py | _abs16 | def _abs16(ins):
''' Absolute value of top of the stack (16 bits in HL)
'''
output = _16bit_oper(ins.quad[2])
output.append('call __ABS16')
output.append('push hl')
REQUIRES.add('abs16.asm')
return output | python | def _abs16(ins):
''' Absolute value of top of the stack (16 bits in HL)
'''
output = _16bit_oper(ins.quad[2])
output.append('call __ABS16')
output.append('push hl')
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boriel/zxbasic | arch/zx48k/backend/__16bit.py | _shru16 | def _shru16(ins):
''' Logical right shift 16bit unsigned integer.
The result is pushed onto the stack.
Optimizations:
* If 2nd op is 0 then
do nothing
* If 2nd op is 1
Shift Right Arithmetic
'''
op1, op2 = tuple(ins.quad[2:])
if is_int(op2):
op = int16(op2)
if op == 0:
return []
output = _16bit_oper(op1)
if op == 1:
output.append('srl h')
output.append('rr l')
output.append('push hl')
return output
output.append('ld b, %i' % op)
else:
output = _8bit_oper(op2)
output.append('ld b, a')
output.extend(_16bit_oper(op1))
label = tmp_label()
output.append('%s:' % label)
output.append('srl h')
output.append('rr l')
output.append('djnz %s' % label)
output.append('push hl')
return output | python | def _shru16(ins):
''' Logical right shift 16bit unsigned integer.
The result is pushed onto the stack.
Optimizations:
* If 2nd op is 0 then
do nothing
* If 2nd op is 1
Shift Right Arithmetic
'''
op1, op2 = tuple(ins.quad[2:])
if is_int(op2):
op = int16(op2)
if op == 0:
return []
output = _16bit_oper(op1)
if op == 1:
output.append('srl h')
output.append('rr l')
output.append('push hl')
return output
output.append('ld b, %i' % op)
else:
output = _8bit_oper(op2)
output.append('ld b, a')
output.extend(_16bit_oper(op1))
label = tmp_label()
output.append('%s:' % label)
output.append('srl h')
output.append('rr l')
output.append('djnz %s' % label)
output.append('push hl')
return output | [
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boriel/zxbasic | outfmt/tap.py | TAP.standard_block | def standard_block(self, bytes_):
"""Adds a standard block of bytes. For TAP files, it's just the
Low + Hi byte plus the content (here, the bytes plus the checksum)
"""
self.out(self.LH(len(bytes_) + 1)) # + 1 for CHECKSUM byte
checksum = 0
for i in bytes_:
checksum ^= (int(i) & 0xFF)
self.out(i)
self.out(checksum) | python | def standard_block(self, bytes_):
"""Adds a standard block of bytes. For TAP files, it's just the
Low + Hi byte plus the content (here, the bytes plus the checksum)
"""
self.out(self.LH(len(bytes_) + 1)) # + 1 for CHECKSUM byte
checksum = 0
for i in bytes_:
checksum ^= (int(i) & 0xFF)
self.out(i)
self.out(checksum) | [
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boriel/zxbasic | api/utils.py | read_txt_file | def read_txt_file(fname):
"""Reads a txt file, regardless of its encoding
"""
encodings = ['utf-8-sig', 'cp1252']
with open(fname, 'rb') as f:
content = bytes(f.read())
for i in encodings:
try:
result = content.decode(i)
if six.PY2:
result = result.encode('utf-8')
return result
except UnicodeDecodeError:
pass
global_.FILENAME = fname
errmsg.syntax_error(1, 'Invalid file encoding. Use one of: %s' % ', '.join(encodings))
return '' | python | def read_txt_file(fname):
"""Reads a txt file, regardless of its encoding
"""
encodings = ['utf-8-sig', 'cp1252']
with open(fname, 'rb') as f:
content = bytes(f.read())
for i in encodings:
try:
result = content.decode(i)
if six.PY2:
result = result.encode('utf-8')
return result
except UnicodeDecodeError:
pass
global_.FILENAME = fname
errmsg.syntax_error(1, 'Invalid file encoding. Use one of: %s' % ', '.join(encodings))
return '' | [
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boriel/zxbasic | api/utils.py | open_file | def open_file(fname, mode='rb', encoding='utf-8'):
""" An open() wrapper for PY2 and PY3 which allows encoding
:param fname: file name (string)
:param mode: file mode (string) optional
:param encoding: optional encoding (string). Ignored in python2 or if not in text mode
:return: an open file handle
"""
if six.PY2 or 't' not in mode:
kwargs = {}
else:
kwargs = {'encoding': encoding}
return open(fname, mode, **kwargs) | python | def open_file(fname, mode='rb', encoding='utf-8'):
""" An open() wrapper for PY2 and PY3 which allows encoding
:param fname: file name (string)
:param mode: file mode (string) optional
:param encoding: optional encoding (string). Ignored in python2 or if not in text mode
:return: an open file handle
"""
if six.PY2 or 't' not in mode:
kwargs = {}
else:
kwargs = {'encoding': encoding}
return open(fname, mode, **kwargs) | [
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boriel/zxbasic | api/utils.py | parse_int | def parse_int(str_num):
""" Given an integer number, return its value,
or None if it could not be parsed.
Allowed formats: DECIMAL, HEXA (0xnnn, $nnnn or nnnnh)
:param str_num: (string) the number to be parsed
:return: an integer number or None if it could not be parsedd
"""
str_num = (str_num or "").strip().upper()
if not str_num:
return None
base = 10
if str_num.startswith('0X'):
base = 16
str_num = str_num[2:]
if str_num.endswith('H'):
base = 16
str_num = str_num[:-1]
if str_num.startswith('$'):
base = 16
str_num = str_num[1:]
try:
return int(str_num, base)
except ValueError:
return None | python | def parse_int(str_num):
""" Given an integer number, return its value,
or None if it could not be parsed.
Allowed formats: DECIMAL, HEXA (0xnnn, $nnnn or nnnnh)
:param str_num: (string) the number to be parsed
:return: an integer number or None if it could not be parsedd
"""
str_num = (str_num or "").strip().upper()
if not str_num:
return None
base = 10
if str_num.startswith('0X'):
base = 16
str_num = str_num[2:]
if str_num.endswith('H'):
base = 16
str_num = str_num[:-1]
if str_num.startswith('$'):
base = 16
str_num = str_num[1:]
try:
return int(str_num, base)
except ValueError:
return None | [
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boriel/zxbasic | outfmt/tzx.py | TZX.out | def out(self, l):
""" Adds a list of bytes to the output string
"""
if not isinstance(l, list):
l = [l]
self.output.extend([int(i) & 0xFF for i in l]) | python | def out(self, l):
""" Adds a list of bytes to the output string
"""
if not isinstance(l, list):
l = [l]
self.output.extend([int(i) & 0xFF for i in l]) | [
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boriel/zxbasic | outfmt/tzx.py | TZX.standard_block | def standard_block(self, _bytes):
""" Adds a standard block of bytes
"""
self.out(self.BLOCK_STANDARD) # Standard block ID
self.out(self.LH(1000)) # 1000 ms standard pause
self.out(self.LH(len(_bytes) + 1)) # + 1 for CHECKSUM byte
checksum = 0
for i in _bytes:
checksum ^= (int(i) & 0xFF)
self.out(i)
self.out(checksum) | python | def standard_block(self, _bytes):
""" Adds a standard block of bytes
"""
self.out(self.BLOCK_STANDARD) # Standard block ID
self.out(self.LH(1000)) # 1000 ms standard pause
self.out(self.LH(len(_bytes) + 1)) # + 1 for CHECKSUM byte
checksum = 0
for i in _bytes:
checksum ^= (int(i) & 0xFF)
self.out(i)
self.out(checksum) | [
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boriel/zxbasic | outfmt/tzx.py | TZX.dump | def dump(self, fname):
""" Saves TZX file to fname
"""
with open(fname, 'wb') as f:
f.write(self.output) | python | def dump(self, fname):
""" Saves TZX file to fname
"""
with open(fname, 'wb') as f:
f.write(self.output) | [
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boriel/zxbasic | outfmt/tzx.py | TZX.save_header | def save_header(self, _type, title, length, param1, param2):
""" Saves a generic standard header:
type: 00 -- Program
01 -- Number Array
02 -- Char Array
03 -- Code
title: Name title.
Will be truncated to 10 chars and padded
with spaces if necessary.
length: Data length (in bytes) of the next block.
param1: For CODE -> Start address.
For PROGRAM -> Autostart line (>=32768 for no autostart)
For DATA (02 & 03) high byte of param1 have the variable name.
param2: For CODE -> 32768
For PROGRAM -> Start of the Variable area relative to program Start (Length of basic in bytes)
For DATA (02 & 03) NOT USED
Info taken from: http://www.worldofspectrum.org/faq/reference/48kreference.htm#TapeDataStructure
"""
title = (title + 10 * ' ')[:10] # Padd it with spaces
title_bytes = [ord(i) for i in title] # Convert it to bytes
_bytes = [self.BLOCK_TYPE_HEADER, _type] + title_bytes + self.LH(length) + self.LH(param1) + self.LH(param2)
self.standard_block(_bytes) | python | def save_header(self, _type, title, length, param1, param2):
""" Saves a generic standard header:
type: 00 -- Program
01 -- Number Array
02 -- Char Array
03 -- Code
title: Name title.
Will be truncated to 10 chars and padded
with spaces if necessary.
length: Data length (in bytes) of the next block.
param1: For CODE -> Start address.
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For DATA (02 & 03) high byte of param1 have the variable name.
param2: For CODE -> 32768
For PROGRAM -> Start of the Variable area relative to program Start (Length of basic in bytes)
For DATA (02 & 03) NOT USED
Info taken from: http://www.worldofspectrum.org/faq/reference/48kreference.htm#TapeDataStructure
"""
title = (title + 10 * ' ')[:10] # Padd it with spaces
title_bytes = [ord(i) for i in title] # Convert it to bytes
_bytes = [self.BLOCK_TYPE_HEADER, _type] + title_bytes + self.LH(length) + self.LH(param1) + self.LH(param2)
self.standard_block(_bytes) | [
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01 -- Number Array
02 -- Char Array
03 -- Code
title: Name title.
Will be truncated to 10 chars and padded
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length: Data length (in bytes) of the next block.
param1: For CODE -> Start address.
For PROGRAM -> Autostart line (>=32768 for no autostart)
For DATA (02 & 03) high byte of param1 have the variable name.
param2: For CODE -> 32768
For PROGRAM -> Start of the Variable area relative to program Start (Length of basic in bytes)
For DATA (02 & 03) NOT USED
Info taken from: http://www.worldofspectrum.org/faq/reference/48kreference.htm#TapeDataStructure | [
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boriel/zxbasic | outfmt/tzx.py | TZX.standard_bytes_header | def standard_bytes_header(self, title, addr, length):
""" Generates a standard header block of CODE type
"""
self.save_header(self.HEADER_TYPE_CODE, title, length, param1=addr, param2=32768) | python | def standard_bytes_header(self, title, addr, length):
""" Generates a standard header block of CODE type
"""
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boriel/zxbasic | outfmt/tzx.py | TZX.standard_program_header | def standard_program_header(self, title, length, line=32768):
""" Generates a standard header block of PROGRAM type
"""
self.save_header(self.HEADER_TYPE_BASIC, title, length, param1=line, param2=length) | python | def standard_program_header(self, title, length, line=32768):
""" Generates a standard header block of PROGRAM type
"""
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boriel/zxbasic | outfmt/tzx.py | TZX.save_code | def save_code(self, title, addr, _bytes):
""" Saves the given bytes as code. If bytes are strings,
its chars will be converted to bytes
"""
self.standard_bytes_header(title, addr, len(_bytes))
_bytes = [self.BLOCK_TYPE_DATA] + [(int(x) & 0xFF) for x in _bytes] # & 0xFF truncates to bytes
self.standard_block(_bytes) | python | def save_code(self, title, addr, _bytes):
""" Saves the given bytes as code. If bytes are strings,
its chars will be converted to bytes
"""
self.standard_bytes_header(title, addr, len(_bytes))
_bytes = [self.BLOCK_TYPE_DATA] + [(int(x) & 0xFF) for x in _bytes] # & 0xFF truncates to bytes
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boriel/zxbasic | outfmt/tzx.py | TZX.save_program | def save_program(self, title, bytes, line=32768):
""" Saves the given bytes as a BASIC program.
"""
self.standard_program_header(title, len(bytes), line)
bytes = [self.BLOCK_TYPE_DATA] + [(int(x) & 0xFF) for x in bytes] # & 0xFF truncates to bytes
self.standard_block(bytes) | python | def save_program(self, title, bytes, line=32768):
""" Saves the given bytes as a BASIC program.
"""
self.standard_program_header(title, len(bytes), line)
bytes = [self.BLOCK_TYPE_DATA] + [(int(x) & 0xFF) for x in bytes] # & 0xFF truncates to bytes
self.standard_block(bytes) | [
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boriel/zxbasic | symbols/strslice.py | SymbolSTRSLICE.make_node | def make_node(cls, lineno, s, lower, upper):
""" Creates a node for a string slice. S is the string expression Tree.
Lower and upper are the bounds, if lower & upper are constants, and
s is also constant, then a string constant is returned.
If lower > upper, an empty string is returned.
"""
if lower is None or upper is None or s is None:
return None
if not check_type(lineno, Type.string, s):
return None
lo = up = None
base = NUMBER(api.config.OPTIONS.string_base.value, lineno=lineno)
lower = TYPECAST.make_node(gl.SYMBOL_TABLE.basic_types[gl.STR_INDEX_TYPE],
BINARY.make_node('MINUS', lower, base, lineno=lineno,
func=lambda x, y: x - y), lineno)
upper = TYPECAST.make_node(gl.SYMBOL_TABLE.basic_types[gl.STR_INDEX_TYPE],
BINARY.make_node('MINUS', upper, base, lineno=lineno,
func=lambda x, y: x - y), lineno)
if lower is None or upper is None:
return None
if is_number(lower):
lo = lower.value
if lo < gl.MIN_STRSLICE_IDX:
lower.value = lo = gl.MIN_STRSLICE_IDX
if is_number(upper):
up = upper.value
if up > gl.MAX_STRSLICE_IDX:
upper.value = up = gl.MAX_STRSLICE_IDX
if is_number(lower, upper):
if lo > up:
return STRING('', lineno)
if s.token == 'STRING': # A constant string? Recalculate it now
up += 1
st = s.value.ljust(up) # Procrustean filled (right)
return STRING(st[lo:up], lineno)
# a$(0 TO INF.) = a$
if lo == gl.MIN_STRSLICE_IDX and up == gl.MAX_STRSLICE_IDX:
return s
return cls(s, lower, upper, lineno) | python | def make_node(cls, lineno, s, lower, upper):
""" Creates a node for a string slice. S is the string expression Tree.
Lower and upper are the bounds, if lower & upper are constants, and
s is also constant, then a string constant is returned.
If lower > upper, an empty string is returned.
"""
if lower is None or upper is None or s is None:
return None
if not check_type(lineno, Type.string, s):
return None
lo = up = None
base = NUMBER(api.config.OPTIONS.string_base.value, lineno=lineno)
lower = TYPECAST.make_node(gl.SYMBOL_TABLE.basic_types[gl.STR_INDEX_TYPE],
BINARY.make_node('MINUS', lower, base, lineno=lineno,
func=lambda x, y: x - y), lineno)
upper = TYPECAST.make_node(gl.SYMBOL_TABLE.basic_types[gl.STR_INDEX_TYPE],
BINARY.make_node('MINUS', upper, base, lineno=lineno,
func=lambda x, y: x - y), lineno)
if lower is None or upper is None:
return None
if is_number(lower):
lo = lower.value
if lo < gl.MIN_STRSLICE_IDX:
lower.value = lo = gl.MIN_STRSLICE_IDX
if is_number(upper):
up = upper.value
if up > gl.MAX_STRSLICE_IDX:
upper.value = up = gl.MAX_STRSLICE_IDX
if is_number(lower, upper):
if lo > up:
return STRING('', lineno)
if s.token == 'STRING': # A constant string? Recalculate it now
up += 1
st = s.value.ljust(up) # Procrustean filled (right)
return STRING(st[lo:up], lineno)
# a$(0 TO INF.) = a$
if lo == gl.MIN_STRSLICE_IDX and up == gl.MAX_STRSLICE_IDX:
return s
return cls(s, lower, upper, lineno) | [
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boriel/zxbasic | arch/zx48k/backend/__init__.py | init | def init():
""" Initializes this module
"""
global ASMS
global ASMCOUNT
global AT_END
global FLAG_end_emitted
global FLAG_use_function_exit
__common.init()
ASMS = {}
ASMCOUNT = 0
AT_END = []
FLAG_use_function_exit = False
FLAG_end_emitted = False
# Default code ORG
OPTIONS.add_option('org', int, 32768)
# Default HEAP SIZE (Dynamic memory) in bytes
OPTIONS.add_option('heap_size', int, 4768) # A bit more than 4K
# Labels for HEAP START (might not be used if not needed)
OPTIONS.add_option('heap_start_label', str, 'ZXBASIC_MEM_HEAP')
# Labels for HEAP SIZE (might not be used if not needed)
OPTIONS.add_option('heap_size_label', str, 'ZXBASIC_HEAP_SIZE')
# Flag for headerless mode (No prologue / epilogue)
OPTIONS.add_option('headerless', bool, False) | python | def init():
""" Initializes this module
"""
global ASMS
global ASMCOUNT
global AT_END
global FLAG_end_emitted
global FLAG_use_function_exit
__common.init()
ASMS = {}
ASMCOUNT = 0
AT_END = []
FLAG_use_function_exit = False
FLAG_end_emitted = False
# Default code ORG
OPTIONS.add_option('org', int, 32768)
# Default HEAP SIZE (Dynamic memory) in bytes
OPTIONS.add_option('heap_size', int, 4768) # A bit more than 4K
# Labels for HEAP START (might not be used if not needed)
OPTIONS.add_option('heap_start_label', str, 'ZXBASIC_MEM_HEAP')
# Labels for HEAP SIZE (might not be used if not needed)
OPTIONS.add_option('heap_size_label', str, 'ZXBASIC_HEAP_SIZE')
# Flag for headerless mode (No prologue / epilogue)
OPTIONS.add_option('headerless', bool, False) | [
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boriel/zxbasic | arch/zx48k/backend/__init__.py | to_byte | def to_byte(stype):
""" Returns the instruction sequence for converting from
the given type to byte.
"""
output = []
if stype in ('i8', 'u8'):
return []
if is_int_type(stype):
output.append('ld a, l')
elif stype == 'f16':
output.append('ld a, e')
elif stype == 'f': # Converts C ED LH to byte
output.append('call __FTOU32REG')
output.append('ld a, l')
REQUIRES.add('ftou32reg.asm')
return output | python | def to_byte(stype):
""" Returns the instruction sequence for converting from
the given type to byte.
"""
output = []
if stype in ('i8', 'u8'):
return []
if is_int_type(stype):
output.append('ld a, l')
elif stype == 'f16':
output.append('ld a, e')
elif stype == 'f': # Converts C ED LH to byte
output.append('call __FTOU32REG')
output.append('ld a, l')
REQUIRES.add('ftou32reg.asm')
return output | [
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boriel/zxbasic | arch/zx48k/backend/__init__.py | to_word | def to_word(stype):
""" Returns the instruction sequence for converting the given
type stored in DE,HL to word (unsigned) HL.
"""
output = [] # List of instructions
if stype == 'u8': # Byte to word
output.append('ld l, a')
output.append('ld h, 0')
elif stype == 'i8': # Signed byte to word
output.append('ld l, a')
output.append('add a, a')
output.append('sbc a, a')
output.append('ld h, a')
elif stype == 'f16': # Must MOVE HL into DE
output.append('ex de, hl')
elif stype == 'f':
output.append('call __FTOU32REG')
REQUIRES.add('ftou32reg.asm')
return output | python | def to_word(stype):
""" Returns the instruction sequence for converting the given
type stored in DE,HL to word (unsigned) HL.
"""
output = [] # List of instructions
if stype == 'u8': # Byte to word
output.append('ld l, a')
output.append('ld h, 0')
elif stype == 'i8': # Signed byte to word
output.append('ld l, a')
output.append('add a, a')
output.append('sbc a, a')
output.append('ld h, a')
elif stype == 'f16': # Must MOVE HL into DE
output.append('ex de, hl')
elif stype == 'f':
output.append('call __FTOU32REG')
REQUIRES.add('ftou32reg.asm')
return output | [
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boriel/zxbasic | arch/zx48k/backend/__init__.py | to_fixed | def to_fixed(stype):
""" Returns the instruction sequence for converting the given
type stored in DE,HL to fixed DE,HL.
"""
output = [] # List of instructions
if is_int_type(stype):
output = to_word(stype)
output.append('ex de, hl')
output.append('ld hl, 0') # 'Truncate' the fixed point
elif stype == 'f':
output.append('call __FTOF16REG')
REQUIRES.add('ftof16reg.asm')
return output | python | def to_fixed(stype):
""" Returns the instruction sequence for converting the given
type stored in DE,HL to fixed DE,HL.
"""
output = [] # List of instructions
if is_int_type(stype):
output = to_word(stype)
output.append('ex de, hl')
output.append('ld hl, 0') # 'Truncate' the fixed point
elif stype == 'f':
output.append('call __FTOF16REG')
REQUIRES.add('ftof16reg.asm')
return output | [
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boriel/zxbasic | arch/zx48k/backend/__init__.py | to_float | def to_float(stype):
""" Returns the instruction sequence for converting the given
type stored in DE,HL to fixed DE,HL.
"""
output = [] # List of instructions
if stype == 'f':
return [] # Nothing to do
if stype == 'f16':
output.append('call __F16TOFREG')
REQUIRES.add('f16tofreg.asm')
return output
# If we reach this point, it's an integer type
if stype == 'u8':
output.append('call __U8TOFREG')
elif stype == 'i8':
output.append('call __I8TOFREG')
else:
output = to_long(stype)
if stype in ('i16', 'i32'):
output.append('call __I32TOFREG')
else:
output.append('call __U32TOFREG')
REQUIRES.add('u32tofreg.asm')
return output | python | def to_float(stype):
""" Returns the instruction sequence for converting the given
type stored in DE,HL to fixed DE,HL.
"""
output = [] # List of instructions
if stype == 'f':
return [] # Nothing to do
if stype == 'f16':
output.append('call __F16TOFREG')
REQUIRES.add('f16tofreg.asm')
return output
# If we reach this point, it's an integer type
if stype == 'u8':
output.append('call __U8TOFREG')
elif stype == 'i8':
output.append('call __I8TOFREG')
else:
output = to_long(stype)
if stype in ('i16', 'i32'):
output.append('call __I32TOFREG')
else:
output.append('call __U32TOFREG')
REQUIRES.add('u32tofreg.asm')
return output | [
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boriel/zxbasic | arch/zx48k/backend/__init__.py | _end | def _end(ins):
""" Outputs the ending sequence
"""
global FLAG_end_emitted
output = _16bit_oper(ins.quad[1])
output.append('ld b, h')
output.append('ld c, l')
if FLAG_end_emitted:
return output + ['jp %s' % END_LABEL]
FLAG_end_emitted = True
output.append('%s:' % END_LABEL)
if OPTIONS.headerless.value:
return output + ['ret']
output.append('di')
output.append('ld hl, (%s)' % CALL_BACK)
output.append('ld sp, hl')
output.append('exx')
output.append('pop hl')
output.append('exx')
output.append('pop iy')
output.append('pop ix')
output.append('ei')
output.append('ret')
output.append('%s:' % CALL_BACK)
output.append('DEFW 0')
return output | python | def _end(ins):
""" Outputs the ending sequence
"""
global FLAG_end_emitted
output = _16bit_oper(ins.quad[1])
output.append('ld b, h')
output.append('ld c, l')
if FLAG_end_emitted:
return output + ['jp %s' % END_LABEL]
FLAG_end_emitted = True
output.append('%s:' % END_LABEL)
if OPTIONS.headerless.value:
return output + ['ret']
output.append('di')
output.append('ld hl, (%s)' % CALL_BACK)
output.append('ld sp, hl')
output.append('exx')
output.append('pop hl')
output.append('exx')
output.append('pop iy')
output.append('pop ix')
output.append('ei')
output.append('ret')
output.append('%s:' % CALL_BACK)
output.append('DEFW 0')
return output | [
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] | train | https://github.com/boriel/zxbasic/blob/23b28db10e41117805bdb3c0f78543590853b132/arch/zx48k/backend/__init__.py#L403-L433 |
boriel/zxbasic | arch/zx48k/backend/__init__.py | _data | def _data(ins):
""" Defines a data item (binary).
It's just a constant expression to be converted do binary data "as is"
1st parameter is the type-size (u8 or i8 for byte, u16 or i16 for word, etc)
2nd parameter is the list of expressions. All of them will be converted to the
type required.
"""
output = []
t = ins.quad[1]
q = eval(ins.quad[2])
if t in ('i8', 'u8'):
size = 'B'
elif t in ('i16', 'u16'):
size = 'W'
elif t in ('i32', 'u32'):
size = 'W'
z = list()
for expr in ins.quad[2]:
z.extend(['(%s) & 0xFFFF' % expr, '(%s) >> 16' % expr])
q = z
elif t == 'str':
size = "B"
q = ['"%s"' % x.replace('"', '""') for x in q]
elif t == 'f':
dat_ = [api.fp.immediate_float(float(x)) for x in q]
for x in dat_:
output.extend(['DEFB %s' % x[0], 'DEFW %s, %s' % (x[1], x[2])])
return output
else:
raise InvalidIC(ins.quad, 'Unimplemented data size %s for %s' % (t, q))
for x in q:
output.append('DEF%s %s' % (size, x))
return output | python | def _data(ins):
""" Defines a data item (binary).
It's just a constant expression to be converted do binary data "as is"
1st parameter is the type-size (u8 or i8 for byte, u16 or i16 for word, etc)
2nd parameter is the list of expressions. All of them will be converted to the
type required.
"""
output = []
t = ins.quad[1]
q = eval(ins.quad[2])
if t in ('i8', 'u8'):
size = 'B'
elif t in ('i16', 'u16'):
size = 'W'
elif t in ('i32', 'u32'):
size = 'W'
z = list()
for expr in ins.quad[2]:
z.extend(['(%s) & 0xFFFF' % expr, '(%s) >> 16' % expr])
q = z
elif t == 'str':
size = "B"
q = ['"%s"' % x.replace('"', '""') for x in q]
elif t == 'f':
dat_ = [api.fp.immediate_float(float(x)) for x in q]
for x in dat_:
output.extend(['DEFB %s' % x[0], 'DEFW %s, %s' % (x[1], x[2])])
return output
else:
raise InvalidIC(ins.quad, 'Unimplemented data size %s for %s' % (t, q))
for x in q:
output.append('DEF%s %s' % (size, x))
return output | [
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type required. | [
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boriel/zxbasic | arch/zx48k/backend/__init__.py | _var | def _var(ins):
""" Defines a memory variable.
"""
output = []
output.append('%s:' % ins.quad[1])
output.append('DEFB %s' % ((int(ins.quad[2]) - 1) * '00, ' + '00'))
return output | python | def _var(ins):
""" Defines a memory variable.
"""
output = []
output.append('%s:' % ins.quad[1])
output.append('DEFB %s' % ((int(ins.quad[2]) - 1) * '00, ' + '00'))
return output | [
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