Extended implementation to use interface as arguments

third_party/WebKit/Source/bindings/scripts/v8_callback_function.py

 # Copyright 2016 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """Generate template values for a callback function.
 
 Design doc: http://www.chromium.org/developers/design-documents/idl-compiler
 """
 
 from v8_globals import includes  # pylint: disable=W0403
 import v8_utilities  # pylint: disable=W0403
 
 CALLBACK_FUNCTION_H_INCLUDES = frozenset([
     'bindings/core/v8/ScopedPersistent.h',
     'platform/heap/Handle.h',
     'wtf/text/WTFString.h',
 ])
 CALLBACK_FUNCTION_CPP_INCLUDES = frozenset([
     'bindings/core/v8/ScriptState.h',
     'bindings/core/v8/V8Binding.h',
     'wtf/Assertions.h',
 ])
 
 
 def callback_function_context(callback_function):
     includes.clear()
     includes.update(CALLBACK_FUNCTION_CPP_INCLUDES)
     idl_type = callback_function.idl_type
     idl_type_str = str(idl_type)
+    forward_declarations = []
+    for argument in callback_function.arguments:
+        if argument.idl_type.is_interface_type:
+            forward_declarations.append(argument.idl_type)
+        argument.idl_type.add_includes_for_type(callback_function.extended_attributes)
     context = {
         'cpp_class': callback_function.name,
-        'cpp_includes': sorted(CALLBACK_FUNCTION_CPP_INCLUDES),
+        'cpp_includes': sorted(includes),
+        'forward_declarations': forward_declarations,

[bashi, 2016/09/23 05:45:18]

sorted(forward_declarations)

[lkawai, 2016/09/23 06:05:36]

Done.

         'header_includes': sorted(CALLBACK_FUNCTION_H_INCLUDES),
         'idl_type': idl_type_str,
         'return_cpp_type': (idl_type.cpp_type + '&') if idl_type.cpp_type != 'void' else None,
         'return_value': idl_type.v8_value_to_local_cpp_value(
             callback_function.extended_attributes, 'v8ReturnValue', 'cppValue',
             bailout_return_value="false") if idl_type.cpp_type != 'void' else None,
         'v8_class': v8_utilities.v8_class_name(callback_function),
     }
     context.update(arguments_context(callback_function.arguments, context['return_cpp_type']))
     return context
@@ skipping 11 matching lines @@
     argument_declarations = ['ScriptState* scriptState', 'ScriptWrappable* scriptWrappable']
     argument_declarations.extend(
         '%s %s' % (argument.idl_type.callback_cpp_type, argument.name)
         for argument in arguments)
     if return_cpp_type:
         argument_declarations.append('%s returnValue' % return_cpp_type)
     return {
         'argument_declarations': argument_declarations,
         'arguments': [argument_context(argument) for argument in arguments],
     }