def __init__()

in bindings/scripts/idl_definitions.py [0:0]

• 82 lines of code
• 26 McCabe index (conditional complexity)

    def __init__(self, node):
        self.attributes = []
        self.constants = []
        self.constructors = []
        self.custom_constructors = []
        self.extended_attributes = {}
        self.operations = []
        self.parent = None
        self.serializer = None
        self.stringifier = None
        self.iterable = None
        self.has_indexed_elements = False
        self.has_named_property_getter = False
        self.maplike = None
        self.setlike = None
        self.original_interface = None
        self.partial_interfaces = []

        self.is_callback = bool(node.GetProperty('CALLBACK'))
        self.is_partial = bool(node.GetProperty('PARTIAL'))
        self.name = node.GetName()
        self.idl_type = IdlType(self.name)

        has_indexed_property_getter = False
        has_integer_typed_length = False

        def is_blacklisted_attribute_type(idl_type):
            return idl_type.is_callback_function or \
                idl_type.is_dictionary or \
                idl_type.is_record_type or \
                idl_type.is_sequence_type

        children = node.GetChildren()
        for child in children:
            child_class = child.GetClass()
            if child_class == 'Attribute':
                attr = IdlAttribute(child)
                if is_blacklisted_attribute_type(attr.idl_type):
                    raise ValueError('Type "%s" cannot be used as an attribute.' % attr.idl_type)
                if attr.idl_type.is_integer_type and attr.name == 'length':
                    has_integer_typed_length = True
                self.attributes.append(attr)
            elif child_class == 'Const':
                self.constants.append(IdlConstant(child))
            elif child_class == 'ExtAttributes':
                extended_attributes = ext_attributes_node_to_extended_attributes(child)
                self.constructors, self.custom_constructors = (
                    extended_attributes_to_constructors(extended_attributes))
                clear_constructor_attributes(extended_attributes)
                self.extended_attributes = extended_attributes
            elif child_class == 'Operation':
                op = IdlOperation(child)
                if 'getter' in op.specials:
                    if str(op.arguments[0].idl_type) == 'unsigned long':
                        has_indexed_property_getter = True
                    elif str(op.arguments[0].idl_type) == 'DOMString':
                        self.has_named_property_getter = True
                self.operations.append(op)
            elif child_class == 'Inherit':
                self.parent = child.GetName()
            elif child_class == 'Serializer':
                self.serializer = IdlSerializer(child)
                self.process_serializer()
            elif child_class == 'Stringifier':
                self.stringifier = IdlStringifier(child)
                self.process_stringifier()
            elif child_class == 'Iterable':
                self.iterable = IdlIterable(child)
            elif child_class == 'Maplike':
                self.maplike = IdlMaplike(child)
            elif child_class == 'Setlike':
                self.setlike = IdlSetlike(child)
            else:
                raise ValueError('Unrecognized node class: %s' % child_class)

        if len([_f for _f in [self.iterable, self.maplike, self.setlike] if _f]) > 1:
            raise ValueError('Interface can only have one of iterable<>, maplike<> and setlike<>.')

        # TODO(rakuco): This validation logic should be in v8_interface according to bashi@.
        # At the moment, doing so does not work because several IDL files are partial Window
        # interface definitions, and interface_dependency_resolver.py doesn't seem to have any logic
        # to prevent these partial interfaces from resetting has_named_property to False.
        if 'LegacyUnenumerableNamedProperties' in self.extended_attributes and \
           not self.has_named_property_getter:
            raise ValueError('[LegacyUnenumerableNamedProperties] can be used only in interfaces '
                             'that support named properties.')

        if has_integer_typed_length and has_indexed_property_getter:
            self.has_indexed_elements = True
        else:
            if self.iterable is not None and self.iterable.key_type is None:
                raise ValueError('Value iterators (iterable<V>) must be accompanied by an indexed '
                                 'property getter and an integer-typed length attribute.')