Hanldify JSObject::PreventExtensions method.

src/runtime.cc

 // Copyright 2012 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 1807 matching lines @@
 RUNTIME_FUNCTION(MaybeObject*, Runtime_GetOwnProperty) {
   HandleScope scope(isolate);
   ASSERT(args.length() == 2);
   CONVERT_ARG_HANDLE_CHECKED(JSObject, obj, 0);
   CONVERT_ARG_HANDLE_CHECKED(Name, name, 1);
   return GetOwnProperty(isolate, obj, name);
 }
 
 
 RUNTIME_FUNCTION(MaybeObject*, Runtime_PreventExtensions) {
-  SealHandleScope shs(isolate);
+  HandleScope scope(isolate);
   ASSERT(args.length() == 1);
-  CONVERT_ARG_CHECKED(JSObject, obj, 0);
-  return obj->PreventExtensions();
+  CONVERT_ARG_HANDLE_CHECKED(JSObject, obj, 0);
+  Handle<Object> result = JSObject::PreventExtensions(obj);
+  RETURN_IF_EMPTY_HANDLE(isolate, result);
+  return *result;
 }
 
 
 RUNTIME_FUNCTION(MaybeObject*, Runtime_IsExtensible) {
   SealHandleScope shs(isolate);
   ASSERT(args.length() == 1);
   CONVERT_ARG_CHECKED(JSObject, obj, 0);
   if (obj->IsJSGlobalProxy()) {
     Object* proto = obj->GetPrototype();
     if (proto->IsNull()) return isolate->heap()->false_value();
     ASSERT(proto->IsJSGlobalObject());
     obj = JSObject::cast(proto);
   }
   return isolate->heap()->ToBoolean(obj->map()->is_extensible());
 }
 
 
 RUNTIME_FUNCTION(MaybeObject*, Runtime_RegExpCompile) {
   HandleScope scope(isolate);
   ASSERT(args.length() == 3);
   CONVERT_ARG_HANDLE_CHECKED(JSRegExp, re, 0);
   CONVERT_ARG_HANDLE_CHECKED(String, pattern, 1);
   CONVERT_ARG_HANDLE_CHECKED(String, flags, 2);
-  Handle<Object> result =
-      RegExpImpl::Compile(re, pattern, flags);
+  Handle<Object> result = RegExpImpl::Compile(re, pattern, flags);
   RETURN_IF_EMPTY_HANDLE(isolate, result);
   return *result;
 }
 
 
 RUNTIME_FUNCTION(MaybeObject*, Runtime_CreateApiFunction) {
   HandleScope scope(isolate);
   ASSERT(args.length() == 1);
   CONVERT_ARG_HANDLE_CHECKED(FunctionTemplateInfo, data, 0);
   return *isolate->factory()->CreateApiFunction(data);
@@ skipping 12935 matching lines @@
     // Handle last resort GC and make sure to allow future allocations
     // to grow the heap without causing GCs (if possible).
     isolate->counters()->gc_last_resort_from_js()->Increment();
     isolate->heap()->CollectAllGarbage(Heap::kNoGCFlags,
                                        "Runtime::PerformGC");
   }
 }
 
 
 } }  // namespace v8::internal