podivilov@google.com
aa58f2ceee
R=antonm@google.com,sra@google.com,vsm@google.com Review URL: https://chromiumcodereview.appspot.com//10456006 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@8113 260f80e4-7a28-3924-810f-c04153c831b5
1179 lines
48 KiB
Python
1179 lines
48 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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from systemhtml import DomToHtmlEvent, DomToHtmlEvents, HtmlSystemShared
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class NativeImplementationSystem(System):
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def __init__(self, templates, database, html_database, html_renames,
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emitters, output_dir):
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super(NativeImplementationSystem, self).__init__(
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templates, database, emitters, output_dir)
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self._html_renames = html_renames
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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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self._html_system = HtmlSystemShared(html_database)
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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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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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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):
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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 _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 _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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def DartImplementationFiles(self):
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return self._dom_impl_files
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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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self._html_system = self._system._html_system
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def StartInterface(self):
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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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self._GenerateEvents()
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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 _GenerateEvents(self):
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if self._interface.id == 'DocumentFragment':
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# Interface DocumentFragment extends Element in dart:html but this fact
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# is not reflected in idls.
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self._EmitEventGetter('_ElementEventsImpl')
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return
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events_attributes = [attr for attr in self._interface.attributes
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if attr.type.id == 'EventListener']
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if not 'EventTarget' in self._interface.ext_attrs and not events_attributes:
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return
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def IsEventTarget(interface):
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return ('EventTarget' in interface.ext_attrs and
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interface.id != 'EventTarget')
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is_root = not _FindParent(self._interface, self._system._database, IsEventTarget)
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if is_root:
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self._members_emitter.Emit(' _EventsImpl _on;\n')
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if not events_attributes:
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if is_root:
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self._EmitEventGetter('_EventsImpl')
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return
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events_class = '_%sEventsImpl' % self._interface.id
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self._EmitEventGetter(events_class)
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def HasEventAttributes(interface):
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return any([a.type.id == 'EventListener' for a in interface.attributes])
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parent = _FindParent(self._interface, self._system._database, HasEventAttributes)
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if parent:
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parent_events_class = '_%sEventsImpl' % parent.id
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else:
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parent_events_class = '_EventsImpl'
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html_inteface = self._HTMLInterfaceName(self._interface.id)
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events_members = self._dart_impl_emitter.Emit(
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'\n'
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'class $EVENTS_CLASS extends $PARENT_EVENTS_CLASS implements $EVENTS_INTERFACE {\n'
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' $EVENTS_CLASS(_ptr) : super(_ptr);\n'
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'$!MEMBERS\n'
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'}\n',
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EVENTS_CLASS=events_class,
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PARENT_EVENTS_CLASS=parent_events_class,
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EVENTS_INTERFACE='%sEvents' % html_inteface)
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events_attributes = DomToHtmlEvents(self._interface.id, events_attributes)
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for event_name in events_attributes:
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events_members.Emit(
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' EventListenerList get $HTML_NAME() => _get(\'$DOM_NAME\');\n',
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HTML_NAME=DomToHtmlEvent(event_name),
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DOM_NAME=event_name)
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def _EmitEventGetter(self, events_class):
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self._members_emitter.Emit(
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'\n'
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' $EVENTS_CLASS get on() {\n'
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' if (_on === null) _on = new $EVENTS_CLASS(this);\n'
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' return _on;\n'
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' }\n',
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EVENTS_CLASS=events_class)
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def _ImplClassName(self, interface_name):
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return '_%sImpl' % interface_name
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def _DartType(self, idl_type):
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type_info = GetIDLTypeInfo(idl_type)
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return self._HTMLInterfaceName(type_info.dart_type())
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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 _HTMLInterfaceName(self, interface_name):
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return self._system._html_renames.get(interface_name, interface_name)
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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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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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html_interface_name = self._HTMLInterfaceName(interface_name)
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template_file = 'factoryprovider_%s.darttemplate' % html_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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native_implementation_function = '%s_constructor_Callback' % interface_name
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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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FACTORYPROVIDER='_%sFactoryProvider' % html_interface_name,
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INTERFACE=html_interface_name,
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PARAMETERS=constructor_info.ParametersImplementationDeclaration(self._DartType),
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ARGUMENTS=constructor_info.ParametersAsArgumentList(),
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NATIVE_NAME=native_implementation_function)
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def FinishInterface(self):
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html_interface_name = self._HTMLInterfaceName(self._interface.id)
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template = None
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if html_interface_name == self._interface.id or not self._system._database.HasInterface(html_interface_name):
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template_file = 'impl_%s.darttemplate' % html_interface_name
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template = self._templates.TryLoad(template_file)
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if not template:
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template = self._templates.Load('dart_implementation.darttemplate')
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class_name = self._ImplClassName(self._interface.id)
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members_emitter = self._dart_impl_emitter.Emit(
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template,
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CLASSNAME=class_name,
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EXTENDS=' extends ' + self._BaseClassName(),
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IMPLEMENTS=' implements ' + html_interface_name,
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NATIVESPEC='')
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members_emitter.Emit(''.join(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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DART_IMPLEMENTATION_CLASS=class_name)
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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',
|
|
INTERFACE=self._interface.id)
|
|
|
|
to_dart_emitter = emitter.Emitter()
|
|
if ('CustomToJS' in self._interface.ext_attrs or
|
|
'CustomToJSObject' in self._interface.ext_attrs or
|
|
'PureInterface' in self._interface.ext_attrs or
|
|
'CPPPureInterface' in self._interface.ext_attrs or
|
|
self._interface_type_info.custom_to_dart()):
|
|
to_dart_emitter.Emit(
|
|
' static Dart_Handle toDart(NativeType* value);\n')
|
|
else:
|
|
to_dart_emitter.Emit(
|
|
' static Dart_Handle toDart(NativeType* value)\n'
|
|
' {\n'
|
|
' return DartDOMWrapper::toDart<Dart$(INTERFACE)>(value);\n'
|
|
' }\n',
|
|
INTERFACE=self._interface.id)
|
|
|
|
webcore_includes = _GenerateCPPIncludes(self._interface_type_info.webcore_includes())
|
|
wrapper_type = _DOMWrapperType(self._system._database, self._interface)
|
|
self._cpp_header_emitter.Emit(
|
|
self._templates.Load('cpp_header.template'),
|
|
INTERFACE=self._interface.id,
|
|
WEBCORE_INCLUDES=webcore_includes,
|
|
WEBCORE_CLASS_NAME=self._interface_type_info.native_type(),
|
|
DECLARATIONS=self._cpp_declarations_emitter.Fragments(),
|
|
NATIVE_TRAITS_TYPE='DartDOMWrapper::%sTraits' % wrapper_type,
|
|
TO_NATIVE=to_native_emitter.Fragments(),
|
|
TO_DART=to_dart_emitter.Fragments())
|
|
|
|
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
|
|
|
|
html_interface_name = self._HTMLInterfaceName(self._interface.id)
|
|
dom_name = DartDomNameOfAttribute(getter or setter)
|
|
html_getter_name = self._html_system.RenameInHtmlLibrary(
|
|
html_interface_name, dom_name, 'get:', implementation_class=True)
|
|
html_setter_name = self._html_system.RenameInHtmlLibrary(
|
|
html_interface_name, dom_name, 'set:', implementation_class=True)
|
|
|
|
if getter and html_getter_name:
|
|
self._AddGetter(getter, html_getter_name)
|
|
if setter and html_setter_name:
|
|
self._AddSetter(setter, html_setter_name)
|
|
|
|
def AddSecondaryAttribute(self, interface, getter, setter):
|
|
self.AddAttribute(getter, setter)
|
|
|
|
def _AddGetter(self, attr, html_name):
|
|
type_info = GetIDLTypeInfo(attr.type.id)
|
|
dart_declaration = '%s get %s()' % (self._DartType(attr.type.id), html_name)
|
|
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, html_name):
|
|
type_info = GetIDLTypeInfo(attr.type.id)
|
|
dart_declaration = 'void set %s(%s)' % (html_name, self._DartType(attr.type.id))
|
|
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 = self._DartType(element_type)
|
|
if self._HasNativeIndexGetter():
|
|
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 self._HasNativeIndexSetter():
|
|
self._EmitNativeIndexSetter(dart_element_type)
|
|
else:
|
|
# The HTML library implementation of NodeList has a custom indexed setter
|
|
# implementation that uses the parent node the NodeList is associated
|
|
# with if one is available.
|
|
if self._interface.id != 'NodeList':
|
|
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)
|
|
|
|
# The list interface for this class is manually generated.
|
|
if self._interface.id == 'NodeList':
|
|
return
|
|
|
|
# TODO(sra): Use separate mixins for mutable implementations of List<T>.
|
|
# TODO(sra): Use separate mixins for typed array implementations of List<T>.
|
|
template_file = 'immutable_list_mixin.darttemplate'
|
|
template = self._system._templates.Load(template_file)
|
|
self._members_emitter.Emit(template, E=dart_element_type)
|
|
|
|
def AmendIndexer(self, element_type):
|
|
# If interface is marked as having native indexed
|
|
# getter or setter, we must emit overrides as it's not
|
|
# guaranteed that the corresponding methods in C++ would be
|
|
# virtual. For example, as of time of writing, even though
|
|
# Uint8ClampedArray inherits from Uint8Array, ::set method
|
|
# is not virtual and accessing it through Uint8Array pointer
|
|
# would lead to wrong semantics (modulo vs. clamping.)
|
|
dart_element_type = self._DartType(element_type)
|
|
|
|
if self._HasNativeIndexGetter():
|
|
self._EmitNativeIndexGetter(dart_element_type)
|
|
if self._HasNativeIndexSetter():
|
|
self._EmitNativeIndexSetter(dart_element_type)
|
|
|
|
def _HasNativeIndexGetter(self):
|
|
ext_attrs = self._interface.ext_attrs
|
|
return ('CustomIndexedGetter' in ext_attrs or
|
|
'NumericIndexedGetter' in ext_attrs)
|
|
|
|
def _EmitNativeIndexGetter(self, element_type):
|
|
dart_declaration = '%s operator[](int index)' % element_type
|
|
self._GenerateNativeBinding('numericIndexGetter', 2, dart_declaration,
|
|
'Callback', True)
|
|
|
|
def _HasNativeIndexSetter(self):
|
|
return 'CustomIndexedSetter' in self._interface.ext_attrs
|
|
|
|
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
|
|
|
|
html_interface_name = self._HTMLInterfaceName(self._interface.id)
|
|
html_name = self._html_system.RenameInHtmlLibrary(
|
|
html_interface_name, info.name, implementation_class=True)
|
|
|
|
if not html_name and info.name == 'item':
|
|
# FIXME: item should be renamed to operator[], not removed.
|
|
html_name = 'item'
|
|
|
|
if not html_name:
|
|
return
|
|
|
|
dart_declaration = '%s%s %s(%s)' % (
|
|
'static ' if info.IsStatic() else '',
|
|
self._DartType(info.type_name),
|
|
html_name or info.name,
|
|
info.ParametersImplementationDeclaration(self._DartType))
|
|
|
|
if 'Custom' in info.overloads[0].ext_attrs:
|
|
argument_count = (0 if info.IsStatic() else 1) + len(info.param_infos)
|
|
self._GenerateNativeBinding(info.name , argument_count,
|
|
dart_declaration, 'Callback', True)
|
|
return
|
|
|
|
if self._interface.id == 'Document' and info.name == 'querySelector':
|
|
# Document.querySelector has custom implementation in dart:html.
|
|
# FIXME: Cleanup query selectors and remove this hack.
|
|
body = emitter.Emitter()
|
|
else:
|
|
body = self._members_emitter.Emit(
|
|
'\n'
|
|
' $DECLARATION {\n'
|
|
'$!BODY'
|
|
' }\n',
|
|
DECLARATION=dart_declaration)
|
|
|
|
self._native_version = 0
|
|
overloads = self.CombineOverloads(info.overloads)
|
|
fallthrough = self.GenerateDispatch(body, info, ' ', overloads)
|
|
if fallthrough:
|
|
body.Emit(' throw "Incorrect number or type of arguments";\n');
|
|
|
|
def CombineOverloads(self, overloads):
|
|
# Combine overloads that can be implemented by the same native method. This
|
|
# undoes the expansion of optional arguments into multiple overloads unless
|
|
# IDL merging has made the overloads necessary. Starting with overload with
|
|
# no optional arguments and grow it by adding optional arguments, then the
|
|
# longest overload can serve for all the shorter ones.
|
|
out = []
|
|
seed_index = 0
|
|
while seed_index < len(overloads):
|
|
seed = overloads[seed_index]
|
|
if len(seed.arguments) > 0 and seed.arguments[-1].is_optional:
|
|
# Must start with no optional arguments.
|
|
out.append(seed)
|
|
seed_index += 1
|
|
continue
|
|
|
|
prev = seed
|
|
probe_index = seed_index + 1
|
|
while probe_index < len(overloads):
|
|
probe = overloads[probe_index]
|
|
# Check that 'probe' extends 'prev' by one optional argument.
|
|
if len(probe.arguments) != len(prev.arguments) + 1:
|
|
break
|
|
if probe.arguments[:-1] != prev.arguments:
|
|
break
|
|
if not probe.arguments[-1].is_optional:
|
|
break
|
|
# See Issue 3177. This test against known implemented types is to
|
|
# prevent combining a possibly unimplemented type. Combining with an
|
|
# unimplemented type will cause all set of combined overloads to become
|
|
# 'unimplemented', even if no argument is passed to the the
|
|
# unimplemented parameter.
|
|
if DartType(probe.arguments[-1].type.id) not in [
|
|
'String', 'int', 'num', 'double', 'bool',
|
|
'IDBKeyRange']:
|
|
break
|
|
probe_index += 1
|
|
prev = probe
|
|
out.append(prev)
|
|
seed_index = probe_index
|
|
|
|
return out
|
|
|
|
def PrintOverloadsComment(self, emitter, info, indent, note, overloads):
|
|
emitter.Emit('$(INDENT)//$NOTE\n', INDENT=indent, NOTE=note)
|
|
for operation in overloads:
|
|
params = ', '.join([
|
|
('[Optional] ' if arg.is_optional else '') + DartType(arg.type.id) + ' '
|
|
+ arg.id for arg in operation.arguments])
|
|
emitter.Emit('$(INDENT)// $NAME($PARAMS)\n',
|
|
INDENT=indent,
|
|
NAME=info.name,
|
|
PARAMS=params)
|
|
emitter.Emit('$(INDENT)//\n', INDENT=indent)
|
|
|
|
def GenerateDispatch(self, emitter, info, indent, 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 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 IsNullable(type):
|
|
#return type != 'int' and type != 'num'
|
|
return True
|
|
|
|
def PickRequiredCppSingleOperation():
|
|
# Returns a special case single operation, or None. Check if we dispatch
|
|
# on RequiredCppParameter arguments. In this case all trailing arguments
|
|
# must be RequiredCppParameter and there is no need in dispatch.
|
|
def IsRequiredCppParameter(arg):
|
|
return 'RequiredCppParameter' in arg.ext_attrs
|
|
def HasRequiredCppParameters(op):
|
|
matches = filter(IsRequiredCppParameter, op.arguments)
|
|
if matches:
|
|
# Validate all the RequiredCppParameter ones are at the end.
|
|
rematches = filter(IsRequiredCppParameter,
|
|
op.arguments[len(op.arguments) - len(matches):])
|
|
if len(matches) != len(rematches):
|
|
raise Exception('Invalid RequiredCppParameter - all subsequent '
|
|
'parameters must also be RequiredCppParameter.')
|
|
return True
|
|
return False
|
|
if any(HasRequiredCppParameters(op) for op in overloads):
|
|
longest = max(overloads, key=lambda op: len(op.arguments))
|
|
# Validate all other overloads are prefixes.
|
|
for op in overloads:
|
|
for (index, arg) in enumerate(op.arguments):
|
|
type1 = arg.type.id
|
|
type2 = longest.arguments[index].type.id
|
|
if type1 != type2:
|
|
raise Exception(
|
|
'Overloads for method %s with RequiredCppParameter have '
|
|
'inconsistent types %s and %s for parameter #%s' %
|
|
(info.name, type1, type2, index))
|
|
return longest
|
|
return None
|
|
|
|
single_operation = PickRequiredCppSingleOperation()
|
|
if single_operation:
|
|
self.GenerateSingleOperation(emitter, info, indent, single_operation)
|
|
return False
|
|
|
|
# Print just the interesting sets of overloads.
|
|
if len(overloads) > 1 or len(info.overloads) > 1:
|
|
self.PrintOverloadsComment(emitter, info, indent, '', info.overloads)
|
|
if overloads != info.overloads:
|
|
self.PrintOverloadsComment(emitter, info, indent, ' -- reduced:',
|
|
overloads)
|
|
|
|
# Match each operation in turn.
|
|
# TODO: Optimize the dispatch to avoid repeated tests.
|
|
fallthrough = True
|
|
for operation in overloads:
|
|
tests = []
|
|
for (position, param) in enumerate(info.param_infos):
|
|
if position < len(operation.arguments):
|
|
arg = operation.arguments[position]
|
|
dart_type = self._DartType(arg.type.id)
|
|
if dart_type == param.dart_type:
|
|
# The overload type matches the method parameter type exactly. We
|
|
# will have already tested this type in checked mode, and the target
|
|
# will expect (i.e. check) this type. This case happens when all
|
|
# the overloads have the same type in this position, including the
|
|
# trivial case of one overload.
|
|
test = None
|
|
else:
|
|
test = TypeCheck(param.name, dart_type)
|
|
if IsNullable(dart_type) or arg.is_optional:
|
|
test = '(%s || %s)' % (NullCheck(param.name), test)
|
|
else:
|
|
test = NullCheck(param.name)
|
|
if test:
|
|
tests.append(test)
|
|
if tests:
|
|
cond = ' && '.join(tests)
|
|
if len(cond) + len(indent) + 7 > 80:
|
|
cond = (' &&\n' + indent + ' ').join(tests)
|
|
call = emitter.Emit(
|
|
'$(INDENT)if ($COND) {\n'
|
|
'$!CALL'
|
|
'$(INDENT)}\n',
|
|
COND=cond,
|
|
INDENT=indent)
|
|
self.GenerateSingleOperation(call, info, indent + ' ', operation)
|
|
else:
|
|
self.GenerateSingleOperation(emitter, info, indent, operation)
|
|
fallthrough = False
|
|
return fallthrough
|
|
|
|
def AddOperation(self, info):
|
|
self._AddOperation(info)
|
|
|
|
def AddStaticOperation(self, info):
|
|
self._AddOperation(info)
|
|
|
|
def AddSecondaryOperation(self, interface, info):
|
|
self.AddOperation(info)
|
|
|
|
def GenerateSingleOperation(self, dispatch_emitter, info, indent, operation):
|
|
"""Generates a call to a single operation.
|
|
|
|
Arguments:
|
|
dispatch_emitter: an dispatch_emitter for the body of a block of code.
|
|
info: the compound information about the operation and its overloads.
|
|
indent: an indentation string for generated code.
|
|
operation: the IDLOperation to call.
|
|
"""
|
|
|
|
self._native_version += 1
|
|
native_name = info.name
|
|
if self._native_version > 1:
|
|
native_name = '%s_%s' % (native_name, self._native_version)
|
|
argument_list = ', '.join([info.param_infos[i].name
|
|
for (i, arg) in enumerate(operation.arguments)])
|
|
|
|
# Generate dispatcher.
|
|
if info.type_name != 'void':
|
|
dispatch_emitter.Emit('$(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, self._DartType(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'
|
|
def is_node(interface):
|
|
return interface.id == 'Node'
|
|
if is_node(interface) or _FindParent(interface, database, is_node):
|
|
type = 'Node'
|
|
if 'ActiveDOMObject' in interface.ext_attrs:
|
|
type = 'Active%s' % type
|
|
return type
|
|
|
|
def _FindParent(interface, database, callback):
|
|
for parent in interface.parents:
|
|
parent_name = parent.type.id
|
|
if not database.HasInterface(parent.type.id):
|
|
continue
|
|
parent_interface = database.GetInterface(parent.type.id)
|
|
if callback(parent_interface):
|
|
return parent_interface
|
|
parent_interface = _FindParent(parent_interface, database, callback)
|
|
if parent_interface:
|
|
return parent_interface
|