IDL compiler: [Unforgeable]

Source/bindings/templates/attributes.cpp

 {##############################################################################}
 {% macro attribute_getter(attribute, world_suffix) %}
 {% filter conditional(attribute.conditional_string) %}
 static void {{attribute.name}}AttributeGetter{{world_suffix}}(v8::Local<v8::String> name, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
+    {% if attribute.is_unforgeable %}
+    v8::Handle<v8::Object> holder = info.This()->FindInstanceInPrototypeChain({{v8_class_name}}::GetTemplate(info.GetIsolate(), worldType(info.GetIsolate())));
+    if (holder.IsEmpty())
+        return;
+    {{cpp_class_name}}* imp = {{v8_class_name}}::toNative(holder);
+    {% endif %}
     {% if attribute.cached_attribute_validation_method %}
     v8::Handle<v8::String> propertyName = v8::String::NewSymbol("{{attribute.name}}");
     {{cpp_class_name}}* imp = {{v8_class_name}}::toNative(info.Holder());
     if (!imp->{{attribute.cached_attribute_validation_method}}()) {
         v8::Handle<v8::Value> value = info.Holder()->GetHiddenValue(propertyName);
         if (!value.IsEmpty()) {
             v8SetReturnValue(info, value);
             return;
         }
     }
-    {% elif not attribute.is_static %}
+    {% elif not (attribute.is_static or attribute.is_unforgeable) %}
     {{cpp_class_name}}* imp = {{v8_class_name}}::toNative(info.Holder());
     {% endif %}
     {% if attribute.is_call_with_script_execution_context %}
     ExecutionContext* scriptContext = getExecutionContext();
     {% endif %}
     {# Special cases #}
     {% if attribute.is_check_security_for_node %}
     {# FIXME: consider using a local variable to not call getter twice #}
     ExceptionState es(info.GetIsolate());
     if (!BindingSecurity::shouldAllowAccessToNode({{attribute.cpp_value}}, es)) {
@@ skipping 60 matching lines @@
     {% endif %}
     {% if attribute.is_custom_getter %}
     {{v8_class_name}}::{{attribute.name}}AttributeGetterCustom(name, info);
     {% else %}
     {{cpp_class_name}}V8Internal::{{attribute.name}}AttributeGetter{{world_suffix}}(name, info);
     {% endif %}
     TRACE_EVENT_SET_SAMPLING_STATE("V8", "Execution");
 }
 {% endfilter %}
 {% endmacro %}