Turn message property of the error object into a data property.

src/messages.cc

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 137 matching lines @@
 }
 
 
 Handle<String> MessageHandler::GetMessage(Handle<Object> data) {
   Handle<String> fmt_str = FACTORY->LookupAsciiSymbol("FormatMessage");
   Handle<JSFunction> fun =
       Handle<JSFunction>(
           JSFunction::cast(
               Isolate::Current()->js_builtins_object()->
               GetPropertyNoExceptionThrown(*fmt_str)));
-  Handle<Object> argv[] = { data };
+  ASSERT(data->IsJSMessageObject());

[Sven Panne, 2012/11/09 07:55:07]

No need for this ASSERT, all cast methods do this implicitly.

+  Handle<JSMessageObject> message = Handle<JSMessageObject>::cast(data);
+  Handle<Object> argv[] = { Handle<Object>(message->type()),
+                            Handle<Object>(message->arguments()) };
 
   bool caught_exception;
   Handle<Object> result =
       Execution::TryCall(fun,
                          Isolate::Current()->js_builtins_object(),
                          ARRAY_SIZE(argv),
                          argv,
                          &caught_exception);
 
   if (caught_exception || !result->IsString()) {
@@ skipping 11 matching lines @@
 
 
 SmartArrayPointer<char> MessageHandler::GetLocalizedMessage(
     Handle<Object> data) {
   HandleScope scope;
   return GetMessage(data)->ToCString(DISALLOW_NULLS);
 }
 
 
 } }  // namespace v8::internal