Implement sealing, freezing, and related functions for proxies.

src/objects.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 2283 matching lines @@
   Handle<Object> result =
       Execution::Call(trap, handler, ARRAY_SIZE(args), args, has_exception);
   if (has_exception) return NONE;
 
   // TODO(rossberg): convert result to PropertyAttributes
   USE(result);
   return NONE;
 }
 
 
+void JSProxy::Fix() {
+  Isolate* isolate = GetIsolate();
+  HandleScope scope(isolate);
+  Handle<JSReceiver> self(this);
+
+  isolate->factory()->BecomeJSObject(self);
+  ASSERT(IsJSObject());
+  // TODO(rossberg): recognize function proxies.
+}
+
+
+
 MaybeObject* JSObject::SetPropertyForResult(LookupResult* result,
                                             String* name,
                                             Object* value,
                                             PropertyAttributes attributes,
                                             StrictModeFlag strict_mode) {
   Heap* heap = GetHeap();
   // Make sure that the top context does not change when doing callbacks or
   // interceptor calls.
   AssertNoContextChange ncc;
 
@@ skipping 9438 matching lines @@
   if (break_point_objects()->IsUndefined()) return 0;
   // Single beak point.
   if (!break_point_objects()->IsFixedArray()) return 1;
   // Multiple break points.
   return FixedArray::cast(break_point_objects())->length();
 }
 #endif
 
 
 } }  // namespace v8::internal