IDL: Basic dictionary inheritance support

Source/bindings/templates/dictionary_v8.cpp

 // 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.
 
 // This file has been auto-generated by {{code_generator}}. DO NOT MODIFY!
 
 #include "config.h"
 #include "{{v8_class}}.h"
 
 {% for filename in cpp_includes if filename != '%s.h' % v8_class %}
 #include "{{filename}}"
 {% endfor %}
 
 namespace blink {
 
 void {{v8_class}}::toImpl(v8::Isolate* isolate, v8::Handle<v8::Value> v8Value, {{cpp_class}}& impl, ExceptionState& exceptionState)
 {
     if (isUndefinedOrNull(v8Value))
         return;
     if (!v8Value->IsObject()) {
         exceptionState.throwTypeError("cannot convert to dictionary.");
         return;
     }
 
+    {% if parent_v8_class %}
+    {{parent_v8_class}}::toImpl(isolate, v8Value, impl, exceptionState);
+    if (exceptionState.hadException())
+        return;
+
+    {% endif %}
     // FIXME: Do not use Dictionary and DictionaryHelper
     // https://crbug.com/321462
     Dictionary dictionary(v8Value, isolate);
     // FIXME: Remove this v8::TryCatch once the code is switched from
     // Dictionary/DictionaryHelper to something that uses ExceptionState.
     v8::TryCatch block;
     {% for member in members %}
     {{member.cpp_type}} {{member.name}};
     if (DictionaryHelper::getWithUndefinedOrNullCheck(dictionary, "{{member.name}}", {{member.name}})) {
     {% if member.enum_validation_expression %}
@@ skipping 13 matching lines @@
         exceptionState.rethrowV8Exception(block.Exception());
         return;
     }
 
     {% endfor %}
 }
 
 v8::Handle<v8::Value> toV8({{cpp_class}}& impl, v8::Handle<v8::Object> creationContext, v8::Isolate* isolate)
 {
     v8::Handle<v8::Object> v8Object = v8::Object::New(isolate);
+    {% if parent_v8_class %}
+    toV8Internal(static_cast<{{parent_cpp_class}}&>(impl), v8Object, creationContext, isolate);
+    {% endif %}
+    toV8Internal(impl, v8Object, creationContext, isolate);
+    return v8Object;
+}
+
+void toV8Internal({{cpp_class}}& impl, v8::Handle<v8::Object> dest, v8::Handle<v8::Object> creationContext, v8::Isolate* isolate)
+{
     {% for member in members %}
     if (impl.{{member.has_method_name}}()) {
         {% if member.is_object %}
         ASSERT(impl.{{member.cpp_name}}().isObject());
         {% endif %}
-        v8Object->Set(v8String(isolate, "{{member.name}}"), {{member.cpp_value_to_v8_value}});
+        dest->Set(v8String(isolate, "{{member.name}}"), {{member.cpp_value_to_v8_value}});
     {% if member.v8_default_value %}
     } else {
-        v8Object->Set(v8String(isolate, "{{member.name}}"), {{member.v8_default_value}});
+        dest->Set(v8String(isolate, "{{member.name}}"), {{member.v8_default_value}});
     {% endif %}
     }
 
     {% endfor %}
-    return v8Object;
 }
 
 } // namespace blink