IDL: DOM impl class code generation for IDL dictionaries

Source/bindings/scripts/v8_dictionary.py

 # 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 copy
 import operator
@@ skipping 68 matching lines @@
             cpp_value='impl->%s()' % member.name, isolate='isolate',
             creation_context='creationContext',
             extended_attributes=member.extended_attributes),
         'has_name': has_name_for_dictionary_member(member),
         'name': member.name,
         'setter_name': setter_name_for_dictionary_member(member),
         'v8_default_value': v8_default_value,
         'v8_type': v8_types.v8_type(idl_type.base_type),
     }
 
-# FIXME: Implement context for impl class.
+
+# Context for implementation classes
+
+def dictionary_impl_context(dictionary, interfaces_info):
+    includes.clear()
+    header_includes = set(['platform/heap/Handle.h'])
+    return {
+        'header_includes': header_includes,
+        'cpp_class': v8_utilities.cpp_name(dictionary),
+        'members': [member_impl_context(member, interfaces_info,
+                                        header_includes)
+                    for member in dictionary.members],
+    }
+
+
+def member_impl_context(member, interfaces_info, header_includes):
+    idl_type = member.idl_type
+
+    def should_use_nullable_container():
+        return idl_type.native_array_element_type or idl_type.is_primitive_type
+
+    def collect_includes(idl_type):

[bashi, 2014/07/25 10:05:40]

Takes idl_type as argument as this function is recursively called.

+        includes_for_type = set()
+        if should_use_nullable_container():
+            includes_for_type.add('bindings/core/v8/Nullable.h')
+
+        idl_type = idl_type.preprocessed_type
+        native_array_element_type = idl_type.native_array_element_type
+        if native_array_element_type:
+            includes_for_type.update(collect_includes(
+                    native_array_element_type))
+            includes_for_type.add('wtf/Vector.h')
+
+        if idl_type.is_string_type:
+            includes_for_type.add('wtf/text/WTFString.h')
+        if idl_type.name in interfaces_info:
+            interface_info = interfaces_info[idl_type.name]
+            includes_for_type.add(interface_info['include_path'])
+        return includes_for_type
+
+    def argument_cpp_type():
+        argument_cpp_type = idl_type.cpp_type_args(used_as_argument=True)
+        if idl_type.native_array_element_type:
+            return 'const %s&' % argument_cpp_type
+        return argument_cpp_type
+
+    def getter_cpp_type():
+        getter_cpp_type = idl_type.cpp_type_args(used_as_return_type=True)
+        if (idl_type.native_array_element_type or idl_type.is_string_type):
+            return 'const %s&' % getter_cpp_type
+        return getter_cpp_type
+
+    def getter_method_expression():
+        if should_use_nullable_container():
+            return 'm_%s.get()' % member.name
+        return 'm_%s' % member.name
+
+    def has_method_expression():
+        if should_use_nullable_container() or idl_type.is_string_type:
+            return '!m_%s.isNull()' % member.name
+        else:
+            return 'm_%s' % member.name
+
+    def member_cpp_type():
+        member_cpp_type = idl_type.cpp_type_args(used_as_member=True)
+        if should_use_nullable_container():
+            return v8_types.cpp_template_type('Nullable', member_cpp_type)
+        return member_cpp_type
+
+    header_includes.update(collect_includes(idl_type))
+    return {
+        'argument_cpp_type': argument_cpp_type(),
+        'getter_cpp_type': getter_cpp_type(),
+        'getter_method_expression': getter_method_expression(),
+        'has_method_expression': has_method_expression(),
+        'has_name': has_name_for_dictionary_member(member),
+        'is_traceable': (idl_type.is_garbage_collected or
+                         idl_type.is_will_be_garbage_collected),
+        'member_cpp_type': member_cpp_type(),
+        'name': member.name,
+        'setter_name': setter_name_for_dictionary_member(member),
+    }