def entry(self) -> Reference:
"""
Get the index of the program's entry point
"""
return self.resolve(
NamedAccess([Identifier('Program'),
Identifier.constructor()]), {})
def finalize(self):
super().finalize()
if Identifier.constructor() not in self.names: # Add implicit constructor
self.children.insert(0, MethodDefinition.empty_constructor(self))
if self.extends and self.extends.untyped in definitions.INTERNAL_SOURCES:
self.children.insert(0, MemberDefinition(Identifier.super(), self.extends).deriving_from(self))
def compile(self, context: CompilationBuffer):
if not self.values:
return
buffer = context.optional()
ref = self[0].compile(buffer) # TODO: remove unnecessary recompilation of first element (used to infer type)
list_type = GenericIdentifier(Identifier('list'), (ref.type,))
last_call = MethodCall(NamedAccess([list_type, Identifier.constructor()])).deriving_from(self)
for value in self: # TODO: validate list is homogeneous, and descend to lowest common type
last_call = MethodCall(NamedAccess([last_call, Identifier("append")]), ArgumentList([value])).deriving_from(self)
return last_call.compile(context)
def finalize(self):
if not self.is_constructor():
return super().finalize()
for descendant in self.descendants:
if isinstance(
descendant,
MethodCall) and descendant.target[0] == Identifier.super():
descendant.replace(
AssignmentOperation(
AssignmentOperation.REASSIGNMENT,
NamedAccess([Identifier.self(),
Identifier.super()]),
MethodCall(NamedAccess(
[self.parent.extends,
Identifier.constructor()]),
descendant.arguments,
is_captured=True).deriving_from(
self)).deriving_from(descendant))
super().finalize()
def parse_instantiating_call(target: Identifier,
arguments: 'ParenthesesVector'):
return MethodCall(NamedAccess.extend(target, Identifier.constructor()),
ArgumentList(arguments))
def constructing_call(self):
return self.target[-1] == Identifier.constructor()
def test_constructor_arguments():
method = parse_local("setup with text name, number age")
parse_local("thing container").attach(method)
validate_method_definition(method, Identifier.constructor(),
[('name', 'text'), ('age', 'number')],
Identifier('container'))
def test_simple_constructor_definition():
method = parse_local("setup")
parse_local("thing container").attach(method)
validate_method_definition(method,
Identifier.constructor(),
return_type=Identifier('container'))
def test_constructing_call():
method = parse_local('Empty(1)')
assert method.target == NamedAccess([Identifier('Empty'), Identifier.constructor()])
validate_types(method.arguments, [NumericValue], MethodCall, lambda x: x.arguments)
assert method.constructing_call
def is_constructor(self):
return self.name == Identifier.constructor()
def constructor_definition(_1: LexicalDeclarationConstructor):
return MethodDefinition(Identifier.constructor(), token=_1)
def empty_constructor(cls, parent):
instance = MethodDefinition(
Identifier.constructor()).deriving_from(parent)
instance.parent = parent
return instance