podivilov@google.com
5ab3ca32ef
R=antonm@chromium.org Review URL: https://chromiumcodereview.appspot.com//10388085 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@7546 260f80e4-7a28-3924-810f-c04153c831b5
1131 lines
45 KiB
Python
1131 lines
45 KiB
Python
#!/usr/bin/python
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# Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
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# for details. All rights reserved. Use of this source code is governed by a
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# BSD-style license that can be found in the LICENSE file.
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"""This module provides shared functionality for the systems to generate
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native binding from the IDL database."""
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import emitter
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import os
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from generator import *
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from systembase import *
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class NativeImplementationSystem(System):
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def __init__(self, templates, database, emitters, auxiliary_dir, output_dir):
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super(NativeImplementationSystem, self).__init__(
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templates, database, emitters, output_dir)
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self._auxiliary_dir = auxiliary_dir
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self._dom_public_files = []
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self._dom_impl_files = []
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self._cpp_header_files = []
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self._cpp_impl_files = []
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def InterfaceGenerator(self,
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interface,
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common_prefix,
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super_interface_name,
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source_filter):
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interface_name = interface.id
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dart_interface_path = self._FilePathForDartInterface(interface_name)
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self._dom_public_files.append(dart_interface_path)
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if IsPureInterface(interface_name):
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return None
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dart_impl_path = self._FilePathForDartImplementation(interface_name)
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self._dom_impl_files.append(dart_impl_path)
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cpp_header_path = self._FilePathForCppHeader(interface_name)
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self._cpp_header_files.append(cpp_header_path)
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cpp_impl_path = self._FilePathForCppImplementation(interface_name)
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self._cpp_impl_files.append(cpp_impl_path)
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return NativeImplementationGenerator(self, interface,
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self._emitters.FileEmitter(dart_impl_path),
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self._emitters.FileEmitter(cpp_header_path),
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self._emitters.FileEmitter(cpp_impl_path),
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self._BaseDefines(interface),
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self._templates)
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def ProcessCallback(self, interface, info):
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self._interface = interface
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dart_interface_path = self._FilePathForDartInterface(self._interface.id)
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self._dom_public_files.append(dart_interface_path)
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if IsPureInterface(self._interface.id):
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return None
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cpp_impl_includes = set()
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cpp_header_handlers_emitter = emitter.Emitter()
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cpp_impl_handlers_emitter = emitter.Emitter()
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class_name = 'Dart%s' % self._interface.id
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for operation in interface.operations:
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if operation.type.id == 'void':
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return_prefix = ''
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error_return = ''
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else:
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return_prefix = 'return '
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error_return = ' false'
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parameters = []
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arguments = []
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for argument in operation.arguments:
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argument_type_info = GetIDLTypeInfo(argument.type.id)
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parameters.append('%s %s' % (argument_type_info.parameter_type(),
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argument.id))
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arguments.append(argument_type_info.to_dart_conversion(argument.id))
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cpp_impl_includes |= set(argument_type_info.conversion_includes())
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native_return_type = GetIDLTypeInfo(operation.type.id).native_type()
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cpp_header_handlers_emitter.Emit(
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'\n'
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' virtual $TYPE handleEvent($PARAMETERS);\n',
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TYPE=native_return_type, PARAMETERS=', '.join(parameters))
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arguments_declaration = 'Dart_Handle arguments[] = { %s }' % ', '.join(arguments)
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if not len(arguments):
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arguments_declaration = 'Dart_Handle* arguments = 0'
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cpp_impl_handlers_emitter.Emit(
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'\n'
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'$TYPE $CLASS_NAME::handleEvent($PARAMETERS)\n'
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'{\n'
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' if (!m_callback.isolate()->isAlive())\n'
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' return$ERROR_RETURN;\n'
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' DartIsolate::Scope scope(m_callback.isolate());\n'
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' DartApiScope apiScope;\n'
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' $ARGUMENTS_DECLARATION;\n'
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' $(RETURN_PREFIX)m_callback.handleEvent($ARGUMENT_COUNT, arguments);\n'
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'}\n',
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TYPE=native_return_type,
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CLASS_NAME=class_name,
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PARAMETERS=', '.join(parameters),
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ERROR_RETURN=error_return,
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RETURN_PREFIX=return_prefix,
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ARGUMENTS_DECLARATION=arguments_declaration,
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ARGUMENT_COUNT=len(arguments))
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cpp_header_path = self._FilePathForCppHeader(self._interface.id)
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cpp_header_emitter = self._emitters.FileEmitter(cpp_header_path)
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cpp_header_emitter.Emit(
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self._templates.Load('cpp_callback_header.template'),
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INTERFACE=self._interface.id,
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HANDLERS=cpp_header_handlers_emitter.Fragments())
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cpp_impl_path = self._FilePathForCppImplementation(self._interface.id)
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self._cpp_impl_files.append(cpp_impl_path)
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cpp_impl_emitter = self._emitters.FileEmitter(cpp_impl_path)
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cpp_impl_emitter.Emit(
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self._templates.Load('cpp_callback_implementation.template'),
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INCLUDES=_GenerateCPPIncludes(cpp_impl_includes),
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INTERFACE=self._interface.id,
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HANDLERS=cpp_impl_handlers_emitter.Fragments())
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def GenerateLibraries(self, lib_dir):
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auxiliary_dir = os.path.relpath(self._auxiliary_dir, self._output_dir)
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# Generate dom_public.dart.
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self._GenerateLibFile(
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'dom_public.darttemplate',
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os.path.join(self._output_dir, 'dom_public.dart'),
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self._dom_public_files,
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AUXILIARY_DIR=MassagePath(auxiliary_dir));
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# Generate dom_impl.dart.
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self._GenerateLibFile(
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'dom_impl.darttemplate',
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os.path.join(self._output_dir, 'dom_impl.dart'),
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self._dom_impl_files,
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AUXILIARY_DIR=MassagePath(auxiliary_dir));
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# Generate DartDerivedSourcesXX.cpp.
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partitions = 20 # FIXME: this should be configurable.
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sources_count = len(self._cpp_impl_files)
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for i in range(0, partitions):
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derived_sources_path = os.path.join(self._output_dir,
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'DartDerivedSources%02i.cpp' % (i + 1))
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includes_emitter = emitter.Emitter()
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for impl_file in self._cpp_impl_files[i::partitions]:
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path = os.path.relpath(impl_file, os.path.dirname(derived_sources_path))
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includes_emitter.Emit('#include "$PATH"\n', PATH=path)
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derived_sources_emitter = self._emitters.FileEmitter(derived_sources_path)
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derived_sources_emitter.Emit(
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self._templates.Load('cpp_derived_sources.template'),
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INCLUDES=includes_emitter.Fragments())
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# Generate DartResolver.cpp.
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cpp_resolver_path = os.path.join(self._output_dir, 'DartResolver.cpp')
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includes_emitter = emitter.Emitter()
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resolver_body_emitter = emitter.Emitter()
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for file in self._cpp_header_files:
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path = os.path.relpath(file, os.path.dirname(cpp_resolver_path))
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includes_emitter.Emit('#include "$PATH"\n', PATH=path)
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resolver_body_emitter.Emit(
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' if (Dart_NativeFunction func = $CLASS_NAME::resolver(name, argumentCount))\n'
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' return func;\n',
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CLASS_NAME=os.path.splitext(os.path.basename(path))[0])
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cpp_resolver_emitter = self._emitters.FileEmitter(cpp_resolver_path)
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cpp_resolver_emitter.Emit(
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self._templates.Load('cpp_resolver.template'),
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INCLUDES=includes_emitter.Fragments(),
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RESOLVER_BODY=resolver_body_emitter.Fragments())
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def Finish(self):
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pass
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def _FilePathForDartInterface(self, interface_name):
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return os.path.join(self._output_dir, 'src', 'interface',
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'%s.dart' % interface_name)
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def _FilePathForDartImplementation(self, interface_name):
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return os.path.join(self._output_dir, 'dart',
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'%sImplementation.dart' % interface_name)
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def _FilePathForDartFactoryProvider(self, interface_name):
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return os.path.join(self._output_dir, 'dart',
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'_%sFactoryProvider.dart' % interface_name)
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def _FilePathForDartFactoryProviderImplementation(self, interface_name):
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return os.path.join(self._output_dir, 'dart',
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'%sFactoryProviderImplementation.dart' % interface_name)
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def _FilePathForCppHeader(self, interface_name):
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return os.path.join(self._output_dir, 'cpp', 'Dart%s.h' % interface_name)
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def _FilePathForCppImplementation(self, interface_name):
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return os.path.join(self._output_dir, 'cpp', 'Dart%s.cpp' % interface_name)
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class NativeImplementationGenerator(object):
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"""Generates Dart implementation for one DOM IDL interface."""
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def __init__(self, system, interface,
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dart_impl_emitter, cpp_header_emitter, cpp_impl_emitter,
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base_members, templates):
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"""Generates Dart and C++ code for the given interface.
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Args:
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system: The NativeImplementationSystem.
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interface: an IDLInterface instance. It is assumed that all types have
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been converted to Dart types (e.g. int, String), unless they are in
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the same package as the interface.
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dart_impl_emitter: an Emitter for the file containing the Dart
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implementation class.
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cpp_header_emitter: an Emitter for the file containing the C++ header.
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cpp_impl_emitter: an Emitter for the file containing the C++
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implementation.
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base_members: a set of names of members defined in a base class. This is
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used to avoid static member 'overriding' in the generated Dart code.
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"""
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self._system = system
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self._interface = interface
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self._dart_impl_emitter = dart_impl_emitter
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self._cpp_header_emitter = cpp_header_emitter
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self._cpp_impl_emitter = cpp_impl_emitter
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self._base_members = base_members
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self._templates = templates
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self._current_secondary_parent = None
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def StartInterface(self):
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self._class_name = self._ImplClassName(self._interface.id)
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self._interface_type_info = GetIDLTypeInfo(self._interface.id)
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self._members_emitter = emitter.Emitter()
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self._cpp_declarations_emitter = emitter.Emitter()
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self._cpp_impl_includes = set()
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self._cpp_definitions_emitter = emitter.Emitter()
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self._cpp_resolver_emitter = emitter.Emitter()
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self._GenerateConstructors()
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def _GenerateConstructors(self):
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if not self._IsConstructable():
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return
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# TODO(antonm): currently we don't have information about number of arguments expected by
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# the constructor, so name only dispatch.
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self._cpp_resolver_emitter.Emit(
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' if (name == "$(INTERFACE_NAME)_constructor_Callback")\n'
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' return Dart$(INTERFACE_NAME)Internal::constructorCallback;\n',
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INTERFACE_NAME=self._interface.id)
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constructor_info = AnalyzeConstructor(self._interface)
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if constructor_info:
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self._EmitFactoryProvider(self._interface.id, constructor_info)
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if constructor_info is None:
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# We have a custom implementation for it.
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self._cpp_declarations_emitter.Emit(
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'\n'
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'void constructorCallback(Dart_NativeArguments);\n')
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return
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raises_dom_exceptions = 'ConstructorRaisesException' in self._interface.ext_attrs
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raises_exceptions = raises_dom_exceptions or len(constructor_info.idl_args) > 0
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arguments = []
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parameter_definitions_emitter = emitter.Emitter()
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create_function = 'create'
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if 'NamedConstructor' in self._interface.ext_attrs:
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raises_exceptions = True
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parameter_definitions_emitter.Emit(
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' DOMWindow* domWindow = DartUtilities::domWindowForCurrentIsolate();\n'
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' if (!domWindow) {\n'
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' exception = Dart_NewString("Failed to fetch domWindow");\n'
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' goto fail;\n'
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' }\n'
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' Document* document = domWindow->document();\n')
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self._cpp_impl_includes.add('"DOMWindow.h"')
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arguments.append('document')
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create_function = 'createForJSConstructor'
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if 'CallWith' in self._interface.ext_attrs:
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call_with = self._interface.ext_attrs['CallWith']
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if call_with == 'ScriptExecutionContext':
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raises_exceptions = True
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parameter_definitions_emitter.Emit(
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' ScriptExecutionContext* context = DartUtilities::scriptExecutionContext();\n'
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' if (!context) {\n'
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' exception = Dart_NewString("Failed to create an object");\n'
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' goto fail;\n'
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' }\n')
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arguments.append('context')
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else:
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raise Exception('Unsupported CallWith=%s attribute' % call_with)
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# Process constructor arguments.
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for (i, argument) in enumerate(constructor_info.idl_args):
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argument_expression = self._GenerateToNative(
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parameter_definitions_emitter, argument, i)
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arguments.append(argument_expression)
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function_expression = '%s::%s' % (self._interface_type_info.native_type(), create_function)
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invocation = self._GenerateWebCoreInvocation(function_expression, arguments,
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self._interface.id, self._interface.ext_attrs, raises_dom_exceptions)
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self._GenerateNativeCallback(callback_name='constructorCallback',
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parameter_definitions=parameter_definitions_emitter.Fragments(),
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needs_receiver=False, invocation=invocation,
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raises_exceptions=raises_exceptions)
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def _ImplClassName(self, interface_name):
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return interface_name + 'Implementation'
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def _BaseClassName(self):
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if not self._interface.parents:
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return 'DOMWrapperBase'
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supertype = self._interface.parents[0].type.id
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# FIXME: We're currently injecting List<..> and EventTarget as
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# supertypes in dart.idl. We should annotate/preserve as
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# attributes instead. For now, this hack lets the self._interfaces
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# inherit, but not the classes.
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# List methods are injected in AddIndexer.
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if IsDartListType(supertype) or IsDartCollectionType(supertype):
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return 'DOMWrapperBase'
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if supertype == 'EventTarget':
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# Most implementors of EventTarget specify the EventListener operations
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# again. If the operations are not specified, try to inherit from the
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# EventTarget implementation.
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#
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# Applies to MessagePort.
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if not [op for op in self._interface.operations if op.id == 'addEventListener']:
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return self._ImplClassName(supertype)
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return 'DOMWrapperBase'
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return self._ImplClassName(supertype)
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def _IsConstructable(self):
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# FIXME: support ConstructorTemplate.
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return set(['CustomConstructor', 'V8CustomConstructor', 'Constructor', 'NamedConstructor']) & set(self._interface.ext_attrs)
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def _EmitFactoryProvider(self, interface_name, constructor_info):
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factory_provider = '_' + interface_name + 'FactoryProvider'
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implementation_class = interface_name + 'FactoryProviderImplementation'
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implementation_function = 'create' + interface_name
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native_implementation_function = '%s_constructor_Callback' % interface_name
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# Emit private factory provider in public library.
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template_file = 'factoryprovider_%s.darttemplate' % interface_name
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template = self._system._templates.TryLoad(template_file)
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if not template:
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template = self._system._templates.Load('factoryprovider.darttemplate')
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dart_impl_path = self._system._FilePathForDartFactoryProvider(
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interface_name)
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self._system._dom_public_files.append(dart_impl_path)
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emitter = self._system._emitters.FileEmitter(dart_impl_path)
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emitter.Emit(
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template,
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FACTORY_PROVIDER=factory_provider,
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CONSTRUCTOR=interface_name,
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PARAMETERS=constructor_info.ParametersImplementationDeclaration(),
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IMPL_CLASS=implementation_class,
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IMPL_FUNCTION=implementation_function,
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ARGUMENTS=constructor_info.ParametersAsArgumentList())
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# Emit public implementation in implementation libary.
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dart_impl_path = self._system._FilePathForDartFactoryProviderImplementation(
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interface_name)
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self._system._dom_impl_files.append(dart_impl_path)
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emitter = self._system._emitters.FileEmitter(dart_impl_path)
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emitter.Emit(
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'class $IMPL_CLASS {\n'
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' static $INTERFACE_NAME $IMPL_FUNCTION($PARAMETERS)\n'
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' native "$NATIVE_NAME";\n'
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'}',
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INTERFACE_NAME=interface_name,
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PARAMETERS=constructor_info.ParametersImplementationDeclaration(),
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IMPL_CLASS=implementation_class,
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IMPL_FUNCTION=implementation_function,
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NATIVE_NAME=native_implementation_function)
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def FinishInterface(self):
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base = self._BaseClassName()
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self._dart_impl_emitter.Emit(
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self._templates.Load('dart_implementation.darttemplate'),
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CLASS=self._class_name, BASE=base, INTERFACE=self._interface.id,
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MEMBERS=self._members_emitter.Fragments())
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self._GenerateCppHeader()
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self._cpp_impl_emitter.Emit(
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self._templates.Load('cpp_implementation.template'),
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INTERFACE=self._interface.id,
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INCLUDES=_GenerateCPPIncludes(self._cpp_impl_includes),
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CALLBACKS=self._cpp_definitions_emitter.Fragments(),
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RESOLVER=self._cpp_resolver_emitter.Fragments())
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def _GenerateCppHeader(self):
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to_native_emitter = emitter.Emitter()
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if self._interface_type_info.custom_to_native():
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to_native_emitter.Emit(
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' static PassRefPtr<NativeType> toNative(Dart_Handle handle, Dart_Handle& exception);\n')
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else:
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to_native_emitter.Emit(
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' static NativeType* toNative(Dart_Handle handle, Dart_Handle& exception)\n'
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' {\n'
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' return DartDOMWrapper::unwrapDartWrapper<Dart$INTERFACE>(handle, exception);\n'
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' }\n',
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INTERFACE=self._interface.id)
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to_dart_emitter = emitter.Emitter()
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if ('CustomToJS' in self._interface.ext_attrs or
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'CustomToJSObject' in self._interface.ext_attrs or
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'PureInterface' in self._interface.ext_attrs or
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'CPPPureInterface' in self._interface.ext_attrs or
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self._interface_type_info.custom_to_dart()):
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to_dart_emitter.Emit(
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' static Dart_Handle toDart(NativeType* value);\n')
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else:
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to_dart_emitter.Emit(
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' static Dart_Handle toDart(NativeType* value)\n'
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' {\n'
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' return DartDOMWrapper::toDart<Dart$(INTERFACE)>(value);\n'
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' }\n',
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INTERFACE=self._interface.id)
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webcore_includes = _GenerateCPPIncludes(self._interface_type_info.webcore_includes())
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wrapper_type = _DOMWrapperType(self._system._database, self._interface)
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self._cpp_header_emitter.Emit(
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self._templates.Load('cpp_header.template'),
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INTERFACE=self._interface.id,
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WEBCORE_INCLUDES=webcore_includes,
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WEBCORE_CLASS_NAME=self._interface_type_info.native_type(),
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DECLARATIONS=self._cpp_declarations_emitter.Fragments(),
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NATIVE_TRAITS_TYPE='DartDOMWrapper::%sTraits' % wrapper_type,
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TO_NATIVE=to_native_emitter.Fragments(),
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TO_DART=to_dart_emitter.Fragments())
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|
|
def _GenerateCallWithHandling(self, node, parameter_definitions_emitter, arguments):
|
|
if 'CallWith' not in node.ext_attrs:
|
|
return False
|
|
|
|
call_with = node.ext_attrs['CallWith']
|
|
if call_with == 'ScriptExecutionContext':
|
|
parameter_definitions_emitter.Emit(
|
|
'\n'
|
|
' ScriptExecutionContext* context = DartUtilities::scriptExecutionContext();\n'
|
|
' if (!context)\n'
|
|
' return;\n')
|
|
arguments.append('context')
|
|
return False
|
|
|
|
if call_with == 'ScriptArguments|CallStack':
|
|
self._cpp_impl_includes.add('"DOMWindow.h"')
|
|
self._cpp_impl_includes.add('"ScriptArguments.h"')
|
|
self._cpp_impl_includes.add('"ScriptCallStack.h"')
|
|
self._cpp_impl_includes.add('"V8Proxy.h"')
|
|
self._cpp_impl_includes.add('"v8.h"')
|
|
parameter_definitions_emitter.Emit(
|
|
'\n'
|
|
' v8::HandleScope handleScope;\n'
|
|
' v8::Context::Scope scope(V8Proxy::mainWorldContext(DartUtilities::domWindowForCurrentIsolate()->frame()));\n'
|
|
' Dart_Handle customArgument = Dart_GetNativeArgument(args, $INDEX);\n'
|
|
' RefPtr<ScriptArguments> scriptArguments(DartUtilities::createScriptArguments(customArgument, exception));\n'
|
|
' if (!scriptArguments)\n'
|
|
' goto fail;\n'
|
|
' RefPtr<ScriptCallStack> scriptCallStack(DartUtilities::createScriptCallStack());\n'
|
|
' if (!scriptCallStack->size())\n'
|
|
' return;\n',
|
|
INDEX=len(node.arguments))
|
|
arguments.extend(['scriptArguments', 'scriptCallStack'])
|
|
return True
|
|
|
|
return False
|
|
|
|
def AddConstant(self, constant):
|
|
# Constants are already defined on the interface.
|
|
pass
|
|
|
|
def AddAttribute(self, getter, setter):
|
|
if 'CheckSecurityForNode' in (getter or setter).ext_attrs:
|
|
# FIXME: exclude from interface as well.
|
|
return
|
|
|
|
if getter:
|
|
self._AddGetter(getter)
|
|
if setter:
|
|
self._AddSetter(setter)
|
|
|
|
def AddSecondaryAttribute(self, interface, getter, setter):
|
|
self.AddAttribute(getter, setter)
|
|
|
|
def _AddGetter(self, attr):
|
|
type_info = GetIDLTypeInfo(attr.type.id)
|
|
dart_declaration = '%s get %s()' % (
|
|
type_info.dart_type(), DartDomNameOfAttribute(attr))
|
|
is_custom = 'Custom' in attr.ext_attrs or 'CustomGetter' in attr.ext_attrs
|
|
cpp_callback_name = self._GenerateNativeBinding(attr.id, 1,
|
|
dart_declaration, 'Getter', is_custom)
|
|
if is_custom:
|
|
return
|
|
|
|
arguments = []
|
|
parameter_definitions_emitter = emitter.Emitter()
|
|
raises_exceptions = self._GenerateCallWithHandling(attr, parameter_definitions_emitter, arguments)
|
|
raises_exceptions = raises_exceptions or attr.get_raises
|
|
|
|
if 'Reflect' in attr.ext_attrs:
|
|
webcore_function_name = GetIDLTypeInfo(attr.type.id).webcore_getter_name()
|
|
if 'URL' in attr.ext_attrs:
|
|
if 'NonEmpty' in attr.ext_attrs:
|
|
webcore_function_name = 'getNonEmptyURLAttribute'
|
|
else:
|
|
webcore_function_name = 'getURLAttribute'
|
|
arguments.append(self._GenerateWebCoreReflectionAttributeName(attr))
|
|
else:
|
|
if attr.id == 'operator':
|
|
webcore_function_name = '_operator'
|
|
elif attr.id == 'target' and attr.type.id == 'SVGAnimatedString':
|
|
webcore_function_name = 'svgTarget'
|
|
else:
|
|
webcore_function_name = re.sub(r'^(HTML|URL|JS|XML|XSLT|\w)',
|
|
lambda s: s.group(1).lower(),
|
|
attr.id)
|
|
webcore_function_name = re.sub(r'^(create|exclusive)',
|
|
lambda s: 'is' + s.group(1).capitalize(),
|
|
webcore_function_name)
|
|
if attr.type.id.startswith('SVGAnimated'):
|
|
webcore_function_name += 'Animated'
|
|
|
|
function_expression = self._GenerateWebCoreFunctionExpression(webcore_function_name, attr)
|
|
invocation = self._GenerateWebCoreInvocation(function_expression,
|
|
arguments, attr.type.id, attr.ext_attrs, attr.get_raises)
|
|
self._GenerateNativeCallback(cpp_callback_name, parameter_definitions_emitter.Fragments(),
|
|
True, invocation, raises_exceptions=raises_exceptions)
|
|
|
|
def _AddSetter(self, attr):
|
|
type_info = GetIDLTypeInfo(attr.type.id)
|
|
dart_declaration = 'void set %s(%s)' % (
|
|
DartDomNameOfAttribute(attr), type_info.dart_type())
|
|
is_custom = set(['Custom', 'CustomSetter', 'V8CustomSetter']) & set(attr.ext_attrs)
|
|
cpp_callback_name = self._GenerateNativeBinding(attr.id, 2,
|
|
dart_declaration, 'Setter', is_custom)
|
|
if is_custom:
|
|
return
|
|
|
|
arguments = []
|
|
parameter_definitions_emitter = emitter.Emitter()
|
|
self._GenerateCallWithHandling(attr, parameter_definitions_emitter, arguments)
|
|
|
|
if 'Reflect' in attr.ext_attrs:
|
|
webcore_function_name = GetIDLTypeInfo(attr.type.id).webcore_setter_name()
|
|
arguments.append(self._GenerateWebCoreReflectionAttributeName(attr))
|
|
else:
|
|
webcore_function_name = re.sub(r'^(xml(?=[A-Z])|\w)',
|
|
lambda s: s.group(1).upper(),
|
|
attr.id)
|
|
webcore_function_name = 'set%s' % webcore_function_name
|
|
if attr.type.id.startswith('SVGAnimated'):
|
|
webcore_function_name += 'Animated'
|
|
|
|
argument_expression = self._GenerateToNative(
|
|
parameter_definitions_emitter, attr, 1, argument_name='value')
|
|
arguments.append(argument_expression)
|
|
|
|
parameter_definitions = parameter_definitions_emitter.Fragments()
|
|
function_expression = self._GenerateWebCoreFunctionExpression(webcore_function_name, attr)
|
|
invocation = self._GenerateWebCoreInvocation(function_expression,
|
|
arguments, 'void', attr.ext_attrs, attr.set_raises)
|
|
|
|
self._GenerateNativeCallback(cpp_callback_name, parameter_definitions_emitter.Fragments(),
|
|
True, invocation, raises_exceptions=True)
|
|
|
|
def AddIndexer(self, element_type):
|
|
"""Adds all the methods required to complete implementation of List."""
|
|
# We would like to simply inherit the implementation of everything except
|
|
# get length(), [], and maybe []=. It is possible to extend from a base
|
|
# array implementation class only when there is no other implementation
|
|
# inheritance. There might be no implementation inheritance other than
|
|
# DOMBaseWrapper for many classes, but there might be some where the
|
|
# array-ness is introduced by a non-root interface:
|
|
#
|
|
# interface Y extends X, List<T> ...
|
|
#
|
|
# In the non-root case we have to choose between:
|
|
#
|
|
# class YImpl extends XImpl { add List<T> methods; }
|
|
#
|
|
# and
|
|
#
|
|
# class YImpl extends ListBase<T> { copies of transitive XImpl methods; }
|
|
#
|
|
dart_element_type = DartType(element_type)
|
|
if ('CustomIndexedGetter' in self._interface.ext_attrs or
|
|
'NumericIndexedGetter' in self._interface.ext_attrs):
|
|
self._EmitNativeIndexGetter(dart_element_type)
|
|
else:
|
|
self._members_emitter.Emit(
|
|
'\n'
|
|
' $TYPE operator[](int index) {\n'
|
|
' return item(index);\n'
|
|
' }\n',
|
|
TYPE=dart_element_type)
|
|
|
|
if 'CustomIndexedSetter' in self._interface.ext_attrs:
|
|
self._EmitNativeIndexSetter(dart_element_type)
|
|
else:
|
|
self._members_emitter.Emit(
|
|
'\n'
|
|
' void operator[]=(int index, $TYPE value) {\n'
|
|
' throw new UnsupportedOperationException("Cannot assign element of immutable List.");\n'
|
|
' }\n',
|
|
TYPE=dart_element_type)
|
|
|
|
self._members_emitter.Emit(
|
|
'\n'
|
|
' void add($TYPE value) {\n'
|
|
' throw new UnsupportedOperationException("Cannot add to immutable List.");\n'
|
|
' }\n'
|
|
'\n'
|
|
' void addLast($TYPE value) {\n'
|
|
' throw new UnsupportedOperationException("Cannot add to immutable List.");\n'
|
|
' }\n'
|
|
'\n'
|
|
' void addAll(Collection<$TYPE> collection) {\n'
|
|
' throw new UnsupportedOperationException("Cannot add to immutable List.");\n'
|
|
' }\n'
|
|
'\n'
|
|
' void sort(int compare($TYPE a, $TYPE b)) {\n'
|
|
' throw new UnsupportedOperationException("Cannot sort immutable List.");\n'
|
|
' }\n'
|
|
'\n'
|
|
' void copyFrom(List<Object> src, int srcStart, '
|
|
'int dstStart, int count) {\n'
|
|
' throw new UnsupportedOperationException("This object is immutable.");\n'
|
|
' }\n'
|
|
'\n'
|
|
' int indexOf($TYPE element, [int start = 0]) {\n'
|
|
' return _Lists.indexOf(this, element, start, this.length);\n'
|
|
' }\n'
|
|
'\n'
|
|
' int lastIndexOf($TYPE element, [int start = null]) {\n'
|
|
' if (start === null) start = length - 1;\n'
|
|
' return _Lists.lastIndexOf(this, element, start);\n'
|
|
' }\n'
|
|
'\n'
|
|
' int clear() {\n'
|
|
' throw new UnsupportedOperationException("Cannot clear immutable List.");\n'
|
|
' }\n'
|
|
'\n'
|
|
' $TYPE removeLast() {\n'
|
|
' throw new UnsupportedOperationException("Cannot removeLast on immutable List.");\n'
|
|
' }\n'
|
|
'\n'
|
|
' $TYPE last() {\n'
|
|
' return this[length - 1];\n'
|
|
' }\n'
|
|
'\n'
|
|
' void forEach(void f($TYPE element)) {\n'
|
|
' _Collections.forEach(this, f);\n'
|
|
' }\n'
|
|
'\n'
|
|
' Collection map(f($TYPE element)) {\n'
|
|
' return _Collections.map(this, [], f);\n'
|
|
' }\n'
|
|
'\n'
|
|
' Collection<$TYPE> filter(bool f($TYPE element)) {\n'
|
|
' return _Collections.filter(this, new List<$TYPE>(), f);\n'
|
|
' }\n'
|
|
'\n'
|
|
' bool every(bool f($TYPE element)) {\n'
|
|
' return _Collections.every(this, f);\n'
|
|
' }\n'
|
|
'\n'
|
|
' bool some(bool f($TYPE element)) {\n'
|
|
' return _Collections.some(this, f);\n'
|
|
' }\n'
|
|
'\n'
|
|
' void setRange(int start, int length, List<$TYPE> from, [int startFrom]) {\n'
|
|
' throw new UnsupportedOperationException("Cannot setRange on immutable List.");\n'
|
|
' }\n'
|
|
'\n'
|
|
' void removeRange(int start, int length) {\n'
|
|
' throw new UnsupportedOperationException("Cannot removeRange on immutable List.");\n'
|
|
' }\n'
|
|
'\n'
|
|
' void insertRange(int start, int length, [$TYPE initialValue]) {\n'
|
|
' throw new UnsupportedOperationException("Cannot insertRange on immutable List.");\n'
|
|
' }\n'
|
|
'\n'
|
|
' List<$TYPE> getRange(int start, int length) {\n'
|
|
' throw new NotImplementedException();\n'
|
|
' }\n'
|
|
'\n'
|
|
' bool isEmpty() {\n'
|
|
' return length == 0;\n'
|
|
' }\n'
|
|
'\n'
|
|
' Iterator<$TYPE> iterator() {\n'
|
|
' return new _FixedSizeListIterator<$TYPE>(this);\n'
|
|
' }\n',
|
|
TYPE=dart_element_type)
|
|
|
|
def _EmitNativeIndexGetter(self, element_type):
|
|
dart_declaration = '%s operator[](int index)' % element_type
|
|
self._GenerateNativeBinding('numericIndexGetter', 2, dart_declaration,
|
|
'Callback', True)
|
|
|
|
def _EmitNativeIndexSetter(self, element_type):
|
|
dart_declaration = 'void operator[]=(int index, %s value)' % element_type
|
|
self._GenerateNativeBinding('numericIndexSetter', 3, dart_declaration,
|
|
'Callback', True)
|
|
|
|
def _AddOperation(self, info):
|
|
"""
|
|
Arguments:
|
|
info: An OperationInfo object.
|
|
"""
|
|
|
|
if 'CheckSecurityForNode' in info.overloads[0].ext_attrs:
|
|
# FIXME: exclude from interface as well.
|
|
return
|
|
|
|
if 'Custom' in info.overloads[0].ext_attrs:
|
|
parameters = info.ParametersImplementationDeclaration()
|
|
dart_declaration = '%s %s(%s)' % (info.type_name, info.name, parameters)
|
|
argument_count = (0 if info.IsStatic() else 1) + len(info.param_infos)
|
|
self._GenerateNativeBinding(info.name, argument_count, dart_declaration,
|
|
'Callback', True)
|
|
return
|
|
|
|
modifier = ''
|
|
if info.IsStatic():
|
|
modifier = 'static '
|
|
body = self._members_emitter.Emit(
|
|
'\n'
|
|
' $MODIFIER$TYPE $NAME($PARAMETERS) {\n'
|
|
'$!BODY'
|
|
' }\n',
|
|
MODIFIER=modifier,
|
|
TYPE=info.type_name,
|
|
NAME=info.name,
|
|
PARAMETERS=info.ParametersImplementationDeclaration())
|
|
|
|
# Process in order of ascending number of arguments to ensure missing
|
|
# optional arguments are processed early.
|
|
overloads = sorted(info.overloads,
|
|
key=lambda overload: len(overload.arguments))
|
|
self._native_version = 0
|
|
fallthrough = self.GenerateDispatch(body, info, ' ', 0, overloads)
|
|
if fallthrough:
|
|
body.Emit(' throw "Incorrect number or type of arguments";\n');
|
|
|
|
def GenerateDispatch(self, emitter, info, indent, position, overloads):
|
|
"""Generates a dispatch to one of the overloads.
|
|
|
|
Arguments:
|
|
emitter: an Emitter for the body of a block of code.
|
|
info: the compound information about the operation and its overloads.
|
|
indent: an indentation string for generated code.
|
|
position: the index of the parameter to dispatch on.
|
|
overloads: a list of the remaining IDLOperations to dispatch.
|
|
|
|
Returns True if the dispatch can fall through on failure, False if the code
|
|
always dispatches.
|
|
"""
|
|
|
|
def NullCheck(name):
|
|
return '%s === null' % name
|
|
|
|
def TypeCheck(name, type):
|
|
return '%s is %s' % (name, type)
|
|
|
|
def ShouldGenerateSingleOperation():
|
|
if position == len(info.param_infos):
|
|
if len(overloads) > 1:
|
|
raise Exception('Duplicate operations ' + str(overloads))
|
|
return True
|
|
|
|
# Check if we dispatch on RequiredCppParameter arguments. In this
|
|
# case all trailing arguments must be RequiredCppParameter and there
|
|
# is no need in dispatch.
|
|
# TODO(antonm): better diagnositics.
|
|
if position >= len(overloads[0].arguments):
|
|
def IsRequiredCppParameter(arg):
|
|
return 'RequiredCppParameter' in arg.ext_attrs
|
|
last_overload = overloads[-1]
|
|
if (len(last_overload.arguments) > position and
|
|
IsRequiredCppParameter(last_overload.arguments[position])):
|
|
for overload in overloads:
|
|
args = overload.arguments[position:]
|
|
if not all([IsRequiredCppParameter(arg) for arg in args]):
|
|
raise Exception('Invalid overload for RequiredCppParameter')
|
|
return True
|
|
|
|
return False
|
|
|
|
if ShouldGenerateSingleOperation():
|
|
self.GenerateSingleOperation(emitter, info, indent, overloads[-1])
|
|
return False
|
|
|
|
# FIXME: Consider a simpler dispatch that iterates over the
|
|
# overloads and generates an overload specific check. Revisit
|
|
# when we move to named optional arguments.
|
|
|
|
# Partition the overloads to divide and conquer on the dispatch.
|
|
positive = []
|
|
negative = []
|
|
first_overload = overloads[0]
|
|
param = info.param_infos[position]
|
|
|
|
if position < len(first_overload.arguments):
|
|
# FIXME: This will not work if the second overload has a more
|
|
# precise type than the first. E.g.,
|
|
# void foo(Node x);
|
|
# void foo(Element x);
|
|
type = DartType(first_overload.arguments[position].type.id)
|
|
test = TypeCheck(param.name, type)
|
|
pred = lambda op: len(op.arguments) > position and DartType(op.arguments[position].type.id) == type
|
|
else:
|
|
type = None
|
|
test = NullCheck(param.name)
|
|
pred = lambda op: position >= len(op.arguments)
|
|
|
|
for overload in overloads:
|
|
if pred(overload):
|
|
positive.append(overload)
|
|
else:
|
|
negative.append(overload)
|
|
|
|
if positive and negative:
|
|
(true_code, false_code) = emitter.Emit(
|
|
'$(INDENT)if ($COND) {\n'
|
|
'$!TRUE'
|
|
'$(INDENT)} else {\n'
|
|
'$!FALSE'
|
|
'$(INDENT)}\n',
|
|
COND=test, INDENT=indent)
|
|
fallthrough1 = self.GenerateDispatch(
|
|
true_code, info, indent + ' ', position + 1, positive)
|
|
fallthrough2 = self.GenerateDispatch(
|
|
false_code, info, indent + ' ', position, negative)
|
|
return fallthrough1 or fallthrough2
|
|
|
|
if negative:
|
|
raise Exception('Internal error, must be all positive')
|
|
|
|
# All overloads require the same test. Do we bother?
|
|
|
|
# If the test is the same as the method's formal parameter then checked mode
|
|
# will have done the test already. (It could be null too but we ignore that
|
|
# case since all the overload behave the same and we don't know which types
|
|
# in the IDL are not nullable.)
|
|
if type == param.dart_type:
|
|
return self.GenerateDispatch(
|
|
emitter, info, indent, position + 1, positive)
|
|
|
|
# Otherwise the overloads have the same type but the type is a subtype of
|
|
# the method's synthesized formal parameter. e.g we have overloads f(X) and
|
|
# f(Y), implemented by the synthesized method f(Z) where X<Z and Y<Z. The
|
|
# dispatch has removed f(X), leaving only f(Y), but there is no guarantee
|
|
# that Y = Z-X, so we need to check for Y.
|
|
true_code = emitter.Emit(
|
|
'$(INDENT)if ($COND) {\n'
|
|
'$!TRUE'
|
|
'$(INDENT)}\n',
|
|
COND=test, INDENT=indent)
|
|
self.GenerateDispatch(
|
|
true_code, info, indent + ' ', position + 1, positive)
|
|
return True
|
|
|
|
def AddOperation(self, info):
|
|
self._AddOperation(info)
|
|
|
|
def AddStaticOperation(self, info):
|
|
self._AddOperation(info)
|
|
|
|
def AddSecondaryOperation(self, interface, info):
|
|
self.AddOperation(info)
|
|
|
|
def GenerateSingleOperation(self, dispatch_emitter, info, indent, operation):
|
|
"""Generates a call to a single operation.
|
|
|
|
Arguments:
|
|
dispatch_emitter: an dispatch_emitter for the body of a block of code.
|
|
info: the compound information about the operation and its overloads.
|
|
indent: an indentation string for generated code.
|
|
operation: the IDLOperation to call.
|
|
"""
|
|
|
|
self._native_version += 1
|
|
native_name = info.name
|
|
if self._native_version > 1:
|
|
native_name = '%s_%s' % (native_name, self._native_version)
|
|
argument_list = ', '.join([info.param_infos[i].name
|
|
for (i, arg) in enumerate(operation.arguments)])
|
|
|
|
# Generate dispatcher.
|
|
if info.type_name != 'void':
|
|
dispatch_emitter.Emit('$(INDENT)return _$NATIVENAME($ARGS);\n',
|
|
INDENT=indent,
|
|
NATIVENAME=native_name,
|
|
ARGS=argument_list)
|
|
else:
|
|
dispatch_emitter.Emit('$(INDENT)_$NATIVENAME($ARGS);\n'
|
|
'$(INDENT)return;\n',
|
|
INDENT=indent,
|
|
NATIVENAME=native_name,
|
|
ARGS=argument_list)
|
|
# Generate binding.
|
|
modifier = ''
|
|
if operation.is_static:
|
|
modifier = 'static '
|
|
dart_declaration = '%s%s _%s(%s)' % (modifier, info.type_name, native_name,
|
|
argument_list)
|
|
is_custom = 'Custom' in operation.ext_attrs
|
|
cpp_callback_name = self._GenerateNativeBinding(
|
|
native_name, (0 if operation.is_static else 1) + len(operation.arguments), dart_declaration, 'Callback',
|
|
is_custom)
|
|
if is_custom:
|
|
return
|
|
|
|
# Generate callback.
|
|
webcore_function_name = operation.ext_attrs.get('ImplementedAs', operation.id)
|
|
|
|
parameter_definitions_emitter = emitter.Emitter()
|
|
arguments = []
|
|
raises_exceptions = self._GenerateCallWithHandling(
|
|
operation, parameter_definitions_emitter, arguments)
|
|
raises_exceptions = raises_exceptions or len(operation.arguments) > 0 or operation.raises
|
|
|
|
# Process Dart arguments.
|
|
start_index = 1
|
|
if operation.is_static:
|
|
start_index = 0
|
|
for (i, argument) in enumerate(operation.arguments):
|
|
if (i == len(operation.arguments) - 1 and
|
|
self._interface.id == 'Console' and
|
|
argument.id == 'arg'):
|
|
# FIXME: we are skipping last argument here because it was added in
|
|
# supplemental dart.idl. Cleanup dart.idl and remove this check.
|
|
break
|
|
argument_expression = self._GenerateToNative(
|
|
parameter_definitions_emitter, argument, start_index + i)
|
|
arguments.append(argument_expression)
|
|
|
|
if operation.id in ['addEventListener', 'removeEventListener']:
|
|
# addEventListener's and removeEventListener's last argument is marked
|
|
# as optional in idl, but is not optional in webcore implementation.
|
|
if len(operation.arguments) == 2:
|
|
arguments.append('false')
|
|
|
|
if self._interface.id == 'CSSStyleDeclaration' and operation.id == 'setProperty':
|
|
# CSSStyleDeclaration.setProperty priority parameter is optional in Dart
|
|
# idl, but is not optional in webcore implementation.
|
|
if len(operation.arguments) == 2:
|
|
arguments.append('String()')
|
|
|
|
if 'NeedsUserGestureCheck' in operation.ext_attrs:
|
|
arguments.append('DartUtilities::processingUserGesture')
|
|
|
|
function_expression = self._GenerateWebCoreFunctionExpression(webcore_function_name, operation)
|
|
invocation = self._GenerateWebCoreInvocation(function_expression, arguments,
|
|
operation.type.id, operation.ext_attrs, operation.raises)
|
|
self._GenerateNativeCallback(cpp_callback_name,
|
|
parameter_definitions=parameter_definitions_emitter.Fragments(),
|
|
needs_receiver=not operation.is_static, invocation=invocation,
|
|
raises_exceptions=raises_exceptions)
|
|
|
|
def _GenerateNativeCallback(self, callback_name, parameter_definitions,
|
|
needs_receiver, invocation, raises_exceptions):
|
|
|
|
if needs_receiver:
|
|
parameter_definitions = emitter.Format(
|
|
' $WEBCORE_CLASS_NAME* receiver = DartDOMWrapper::receiver< $WEBCORE_CLASS_NAME >(args);\n'
|
|
' $PARAMETER_DEFINITIONS\n',
|
|
WEBCORE_CLASS_NAME=self._interface_type_info.native_type(),
|
|
PARAMETER_DEFINITIONS=parameter_definitions)
|
|
|
|
body = emitter.Format(
|
|
' {\n'
|
|
'$PARAMETER_DEFINITIONS'
|
|
'$INVOCATION'
|
|
' return;\n'
|
|
' }\n',
|
|
PARAMETER_DEFINITIONS=parameter_definitions,
|
|
INVOCATION=invocation)
|
|
|
|
if raises_exceptions:
|
|
body = emitter.Format(
|
|
' Dart_Handle exception = 0;\n'
|
|
'$BODY'
|
|
'\n'
|
|
'fail:\n'
|
|
' Dart_ThrowException(exception);\n'
|
|
' ASSERT_NOT_REACHED();\n',
|
|
BODY=body)
|
|
|
|
self._cpp_definitions_emitter.Emit(
|
|
'\n'
|
|
'static void $CALLBACK_NAME(Dart_NativeArguments args)\n'
|
|
'{\n'
|
|
' DartApiScope dartApiScope;\n'
|
|
'$BODY'
|
|
'}\n',
|
|
CALLBACK_NAME=callback_name,
|
|
BODY=body)
|
|
|
|
def _GenerateToNative(self, emitter, idl_node, index,
|
|
argument_name=None):
|
|
"""idl_node is IDLArgument or IDLAttribute."""
|
|
type_info = GetIDLTypeInfo(idl_node.type.id)
|
|
if not IsPrimitiveType(idl_node.type.id):
|
|
self._cpp_impl_includes.add('"Dart%s.h"' % type_info.idl_type())
|
|
argument_name = argument_name or idl_node.id
|
|
handle = 'Dart_GetNativeArgument(args, %i)' % index
|
|
return type_info.emit_to_native(emitter, idl_node, argument_name, handle, self._interface.id)
|
|
|
|
def _GenerateNativeBinding(self, idl_name, argument_count, dart_declaration,
|
|
native_suffix, is_custom):
|
|
native_binding = '%s_%s_%s' % (self._interface.id, idl_name, native_suffix)
|
|
self._members_emitter.Emit(
|
|
'\n'
|
|
' $DART_DECLARATION native "$NATIVE_BINDING";\n',
|
|
DART_DECLARATION=dart_declaration, NATIVE_BINDING=native_binding)
|
|
|
|
cpp_callback_name = '%s%s' % (idl_name, native_suffix)
|
|
self._cpp_resolver_emitter.Emit(
|
|
' if (argumentCount == $ARGC && name == "$NATIVE_BINDING")\n'
|
|
' return Dart$(INTERFACE_NAME)Internal::$CPP_CALLBACK_NAME;\n',
|
|
ARGC=argument_count,
|
|
NATIVE_BINDING=native_binding,
|
|
INTERFACE_NAME=self._interface.id,
|
|
CPP_CALLBACK_NAME=cpp_callback_name)
|
|
|
|
if is_custom:
|
|
self._cpp_declarations_emitter.Emit(
|
|
'\n'
|
|
'void $CPP_CALLBACK_NAME(Dart_NativeArguments);\n',
|
|
CPP_CALLBACK_NAME=cpp_callback_name)
|
|
|
|
return cpp_callback_name
|
|
|
|
def _GenerateWebCoreReflectionAttributeName(self, attr):
|
|
namespace = 'HTMLNames'
|
|
svg_exceptions = ['class', 'id', 'onabort', 'onclick', 'onerror', 'onload',
|
|
'onmousedown', 'onmousemove', 'onmouseout', 'onmouseover',
|
|
'onmouseup', 'onresize', 'onscroll', 'onunload']
|
|
if self._interface.id.startswith('SVG') and not attr.id in svg_exceptions:
|
|
namespace = 'SVGNames'
|
|
self._cpp_impl_includes.add('"%s.h"' % namespace)
|
|
|
|
attribute_name = attr.ext_attrs['Reflect'] or attr.id.lower()
|
|
return 'WebCore::%s::%sAttr' % (namespace, attribute_name)
|
|
|
|
def _GenerateWebCoreFunctionExpression(self, function_name, idl_node):
|
|
if 'ImplementedBy' in idl_node.ext_attrs:
|
|
return '%s::%s' % (idl_node.ext_attrs['ImplementedBy'], function_name)
|
|
if idl_node.is_static:
|
|
return '%s::%s' % (self._interface_type_info.idl_type(), function_name)
|
|
return '%s%s' % (self._interface_type_info.receiver(), function_name)
|
|
|
|
def _GenerateWebCoreInvocation(self, function_expression, arguments,
|
|
idl_return_type, attributes, raises_dom_exceptions):
|
|
invocation_template = ' $FUNCTION_CALL;\n'
|
|
if idl_return_type != 'void':
|
|
return_type_info = GetIDLTypeInfo(idl_return_type)
|
|
self._cpp_impl_includes |= set(return_type_info.conversion_includes())
|
|
|
|
# Generate to Dart conversion of C++ value.
|
|
to_dart_conversion = return_type_info.to_dart_conversion('$FUNCTION_CALL', self._interface.id, attributes)
|
|
invocation_template = emitter.Format(
|
|
' Dart_Handle returnValue = $TO_DART_CONVERSION;\n'
|
|
' if (returnValue)\n'
|
|
' Dart_SetReturnValue(args, returnValue);\n',
|
|
TO_DART_CONVERSION=to_dart_conversion)
|
|
|
|
if raises_dom_exceptions:
|
|
# Add 'ec' argument to WebCore invocation and convert DOM exception to Dart exception.
|
|
arguments.append('ec')
|
|
invocation_template = emitter.Format(
|
|
' ExceptionCode ec = 0;\n'
|
|
'$INVOCATION'
|
|
' if (UNLIKELY(ec)) {\n'
|
|
' exception = DartDOMWrapper::exceptionCodeToDartException(ec);\n'
|
|
' goto fail;\n'
|
|
' }\n',
|
|
INVOCATION=invocation_template)
|
|
|
|
if 'ImplementedBy' in attributes:
|
|
arguments.insert(0, 'receiver')
|
|
self._cpp_impl_includes.add('"%s.h"' % attributes['ImplementedBy'])
|
|
|
|
return emitter.Format(invocation_template,
|
|
FUNCTION_CALL='%s(%s)' % (function_expression, ', '.join(arguments)))
|
|
|
|
def _GenerateCPPIncludes(includes):
|
|
return ''.join(['#include %s\n' % include for include in includes])
|
|
|
|
def _DOMWrapperType(database, interface):
|
|
if interface.id == 'MessagePort':
|
|
return 'MessagePort'
|
|
|
|
type = 'Object'
|
|
if _InstanceOfNode(database, interface):
|
|
type = 'Node'
|
|
if 'ActiveDOMObject' in interface.ext_attrs:
|
|
type = 'Active%s' % type
|
|
return type
|
|
|
|
def _InstanceOfNode(database, interface):
|
|
if interface.id == 'Node':
|
|
return True
|
|
for parent in interface.parents:
|
|
if not database.HasInterface(parent.type.id):
|
|
continue
|
|
parent_interface = database.GetInterface(parent.type.id)
|
|
if _InstanceOfNode(database, parent_interface):
|
|
return True
|
|
return False
|