| # Copyright 2014 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. |
| |
| import v8_utilities |
| |
| |
| UNION_H_INCLUDES = frozenset([ |
| 'bindings/core/v8/ExceptionState.h', |
| 'bindings/core/v8/V8Binding.h', |
| 'platform/heap/Handle.h', |
| ]) |
| |
| cpp_includes = set() |
| header_forward_decls = set() |
| |
| |
| def union_context(union_types, interfaces_info): |
| return { |
| 'containers': [container_context(union_type, interfaces_info) |
| for union_type in union_types], |
| 'cpp_includes': sorted(cpp_includes), |
| 'header_forward_decls': sorted(header_forward_decls), |
| 'header_includes': sorted(UNION_H_INCLUDES), |
| } |
| |
| |
| def container_context(union_type, interfaces_info): |
| members = [] |
| |
| # These variables refer to member contexts if the given union type has |
| # corresponding types. They are used for V8 -> impl conversion. |
| boolean_type = None |
| dictionary_type = None |
| interface_types = [] |
| numeric_type = None |
| string_type = None |
| for member in union_type.member_types: |
| context = member_context(member, interfaces_info) |
| members.append(context) |
| if member.is_interface_type: |
| interface_types.append(context) |
| elif member.is_dictionary: |
| if dictionary_type: |
| raise Exception('%s is ambiguous.' % union_type.name) |
| dictionary_type = context |
| elif member.base_type == 'boolean': |
| if boolean_type: |
| raise Exception('%s is ambiguous.' % union_type.name) |
| boolean_type = context |
| elif member.is_numeric_type: |
| if numeric_type: |
| raise Exception('%s is ambiguous.' % union_type.name) |
| numeric_type = context |
| elif member.is_string_type: |
| if string_type: |
| raise Exception('%s is ambiguous.' % union_type.name) |
| string_type = context |
| else: |
| raise Exception('%s is not supported as an union member.' % member.name) |
| |
| return { |
| 'boolean_type': boolean_type, |
| 'cpp_class': union_type.name, |
| 'dictionary_type': dictionary_type, |
| 'interface_types': interface_types, |
| 'members': members, |
| 'needs_trace': any(member['is_traceable'] for member in members), |
| 'numeric_type': numeric_type, |
| 'string_type': string_type, |
| } |
| |
| |
| def member_context(member, interfaces_info): |
| cpp_includes.update(member.includes_for_type) |
| interface_info = interfaces_info.get(member.name, None) |
| if interface_info: |
| cpp_includes.update(interface_info.get('dependencies_include_paths', [])) |
| header_forward_decls.add(member.name) |
| return { |
| 'cpp_name': v8_utilities.uncapitalize(member.name), |
| 'cpp_type': member.cpp_type_args(used_in_cpp_sequence=True), |
| 'cpp_local_type': member.cpp_type, |
| 'cpp_value_to_v8_value': member.cpp_value_to_v8_value( |
| cpp_value='impl.getAs%s()' % member.name, isolate='isolate', |
| creation_context='creationContext'), |
| 'is_traceable': (member.is_garbage_collected or |
| member.is_will_be_garbage_collected), |
| 'rvalue_cpp_type': member.cpp_type_args(used_as_rvalue_type=True), |
| 'specific_type_enum': 'SpecificType' + member.name, |
| 'type_name': member.name, |
| 'v8_value_to_local_cpp_value': member.v8_value_to_local_cpp_value( |
| {}, 'v8Value', 'cppValue', needs_exception_state_for_string=True), |
| } |