| # 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. |
| |
| """Generate template contexts of dictionaries for both v8 bindings and |
| implementation classes that are used by blink's core/modules. |
| """ |
| |
| import operator |
| from idl_types import IdlType |
| from v8_globals import includes |
| import v8_types |
| import v8_utilities |
| from v8_utilities import has_extended_attribute_value |
| |
| |
| DICTIONARY_H_INCLUDES = frozenset([ |
| 'bindings/core/v8/ToV8.h', |
| 'bindings/core/v8/V8Binding.h', |
| 'platform/heap/Handle.h', |
| ]) |
| |
| DICTIONARY_CPP_INCLUDES = frozenset([ |
| 'bindings/core/v8/ExceptionState.h', |
| ]) |
| |
| |
| def setter_name_for_dictionary_member(member): |
| name = v8_utilities.cpp_name(member) |
| return 'set%s' % v8_utilities.capitalize(name) |
| |
| |
| def null_setter_name_for_dictionary_member(member): |
| if member.idl_type.is_nullable: |
| name = v8_utilities.cpp_name(member) |
| return 'set%sToNull' % v8_utilities.capitalize(name) |
| return None |
| |
| |
| def has_method_name_for_dictionary_member(member): |
| name = v8_utilities.cpp_name(member) |
| return 'has%s' % v8_utilities.capitalize(name) |
| |
| |
| def unwrap_nullable_if_needed(idl_type): |
| if idl_type.is_nullable: |
| return idl_type.inner_type |
| return idl_type |
| |
| |
| # Context for V8 bindings |
| |
| def dictionary_context(dictionary, interfaces_info): |
| includes.clear() |
| includes.update(DICTIONARY_CPP_INCLUDES) |
| cpp_class = v8_utilities.cpp_name(dictionary) |
| context = { |
| 'cpp_class': cpp_class, |
| 'header_includes': set(DICTIONARY_H_INCLUDES), |
| 'members': [member_context(dictionary, member) |
| for member in sorted(dictionary.members, |
| key=operator.attrgetter('name'))], |
| 'use_permissive_dictionary_conversion': 'PermissiveDictionaryConversion' in dictionary.extended_attributes, |
| 'v8_class': v8_types.v8_type(cpp_class), |
| 'v8_original_class': v8_types.v8_type(dictionary.name), |
| } |
| if dictionary.parent: |
| IdlType(dictionary.parent).add_includes_for_type() |
| parent_cpp_class = v8_utilities.cpp_name_from_interfaces_info( |
| dictionary.parent, interfaces_info) |
| context.update({ |
| 'parent_cpp_class': parent_cpp_class, |
| 'parent_v8_class': v8_types.v8_type(parent_cpp_class), |
| }) |
| return context |
| |
| |
| def member_context(dictionary, member): |
| extended_attributes = member.extended_attributes |
| idl_type = member.idl_type |
| idl_type.add_includes_for_type(extended_attributes) |
| unwrapped_idl_type = unwrap_nullable_if_needed(idl_type) |
| |
| if member.is_required and member.default_value: |
| raise Exception( |
| 'Required member %s must not have a default value.' % member.name) |
| |
| def default_values(): |
| if not member.default_value: |
| return None, None |
| if member.default_value.is_null: |
| return None, 'v8::Null(isolate)' |
| cpp_default_value = unwrapped_idl_type.literal_cpp_value( |
| member.default_value) |
| v8_default_value = unwrapped_idl_type.cpp_value_to_v8_value( |
| cpp_value=cpp_default_value, isolate='isolate', |
| creation_context='creationContext') |
| return cpp_default_value, v8_default_value |
| |
| cpp_default_value, v8_default_value = default_values() |
| cpp_name = v8_utilities.cpp_name(member) |
| |
| return { |
| 'cpp_default_value': cpp_default_value, |
| 'cpp_name': cpp_name, |
| 'cpp_type': unwrapped_idl_type.cpp_type, |
| 'cpp_value_to_v8_value': unwrapped_idl_type.cpp_value_to_v8_value( |
| cpp_value='impl.%s()' % cpp_name, isolate='isolate', |
| creation_context='creationContext', |
| extended_attributes=extended_attributes), |
| 'deprecate_as': v8_utilities.deprecate_as(member), |
| 'enum_type': idl_type.enum_type, |
| 'enum_values': unwrapped_idl_type.enum_values, |
| 'has_method_name': has_method_name_for_dictionary_member(member), |
| 'idl_type': idl_type.base_type, |
| 'is_interface_type': idl_type.is_interface_type and not idl_type.is_dictionary, |
| 'is_nullable': idl_type.is_nullable, |
| 'is_object': unwrapped_idl_type.name == 'Object', |
| 'is_required': member.is_required, |
| 'name': member.name, |
| 'setter_name': setter_name_for_dictionary_member(member), |
| 'null_setter_name': null_setter_name_for_dictionary_member(member), |
| 'v8_default_value': v8_default_value, |
| 'v8_value_to_local_cpp_value': unwrapped_idl_type.v8_value_to_local_cpp_value( |
| extended_attributes, member.name + 'Value', |
| member.name, isolate='isolate', use_exception_state=True), |
| } |
| |
| |
| # Context for implementation classes |
| |
| def dictionary_impl_context(dictionary, interfaces_info): |
| def remove_duplicate_members(members): |
| # When [ImplementedAs] is used, cpp_name can conflict. For example, |
| # dictionary D { long foo; [ImplementedAs=foo, DeprecateAs=Foo] long oldFoo; }; |
| # This function removes such duplications, checking they have the same type. |
| members_dict = {} |
| for member in members: |
| cpp_name = member['cpp_name'] |
| duplicated_member = members_dict.get(cpp_name) |
| if duplicated_member and duplicated_member != member: |
| raise Exception('Member name conflict: %s' % cpp_name) |
| members_dict[cpp_name] = member |
| return sorted(members_dict.values(), key=lambda member: member['cpp_name']) |
| |
| includes.clear() |
| header_includes = set(['platform/heap/Handle.h']) |
| members = [member_impl_context(member, interfaces_info, header_includes) |
| for member in dictionary.members] |
| members = remove_duplicate_members(members) |
| context = { |
| 'header_includes': header_includes, |
| 'cpp_class': v8_utilities.cpp_name(dictionary), |
| 'members': members, |
| } |
| if dictionary.parent: |
| context['parent_cpp_class'] = v8_utilities.cpp_name_from_interfaces_info( |
| dictionary.parent, interfaces_info) |
| parent_interface_info = interfaces_info.get(dictionary.parent) |
| if parent_interface_info: |
| context['header_includes'].add( |
| parent_interface_info['include_path']) |
| return context |
| |
| |
| def member_impl_context(member, interfaces_info, header_includes): |
| idl_type = unwrap_nullable_if_needed(member.idl_type) |
| cpp_name = v8_utilities.cpp_name(member) |
| |
| def getter_expression(): |
| if idl_type.impl_should_use_nullable_container: |
| return 'm_%s.get()' % cpp_name |
| return 'm_%s' % cpp_name |
| |
| def has_method_expression(): |
| if idl_type.impl_should_use_nullable_container or idl_type.is_enum or idl_type.is_string_type or idl_type.is_union_type: |
| return '!m_%s.isNull()' % cpp_name |
| elif idl_type.name in ['Any', 'Object']: |
| return '!(m_{0}.isEmpty() || m_{0}.isNull() || m_{0}.isUndefined())'.format(cpp_name) |
| else: |
| return 'm_%s' % cpp_name |
| |
| def member_cpp_type(): |
| member_cpp_type = idl_type.cpp_type_args(used_in_cpp_sequence=True) |
| if idl_type.impl_should_use_nullable_container: |
| return v8_types.cpp_template_type('Nullable', member_cpp_type) |
| return member_cpp_type |
| |
| cpp_default_value = None |
| if member.default_value and not member.default_value.is_null: |
| cpp_default_value = idl_type.literal_cpp_value(member.default_value) |
| |
| header_includes.update(idl_type.impl_includes_for_type(interfaces_info)) |
| return { |
| 'cpp_default_value': cpp_default_value, |
| 'cpp_name': cpp_name, |
| 'getter_expression': getter_expression(), |
| 'has_method_expression': has_method_expression(), |
| 'has_method_name': has_method_name_for_dictionary_member(member), |
| 'is_nullable': idl_type.is_nullable, |
| 'is_traceable': idl_type.is_traceable, |
| 'member_cpp_type': member_cpp_type(), |
| 'null_setter_name': null_setter_name_for_dictionary_member(member), |
| 'rvalue_cpp_type': idl_type.cpp_type_args(used_as_rvalue_type=True), |
| 'setter_name': setter_name_for_dictionary_member(member), |
| } |
