harmony_scoping: Implement lexical bindings at top level

src/objects-inl.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 //
 // Review notes:
 //
 // - The use of macros in these inline functions may seem superfluous
 // but it is absolutely needed to make sure gcc generates optimal
 // code. gcc is not happy when attempting to inline too deep.
 //
@@ skipping 749 matching lines @@
 }
 
 
 bool Object::IsNativeContext() const {
   return Object::IsHeapObject() &&
       HeapObject::cast(this)->map() ==
       HeapObject::cast(this)->GetHeap()->native_context_map();
 }
 
 
+bool Object::IsGlobalContextTable() const {
+  if (!Object::IsHeapObject()) return false;
+  Map* map = HeapObject::cast(this)->map();
+  Heap* heap = map->GetHeap();
+  return map == heap->global_context_table_map();
+}
+
+
 bool Object::IsScopeInfo() const {
   return Object::IsHeapObject() &&
       HeapObject::cast(this)->map() ==
       HeapObject::cast(this)->GetHeap()->scope_info_map();
 }
 
 
 TYPE_CHECKER(JSFunction, JS_FUNCTION_TYPE)
 
 
@@ skipping 6540 matching lines @@
 #undef READ_SHORT_FIELD
 #undef WRITE_SHORT_FIELD
 #undef READ_BYTE_FIELD
 #undef WRITE_BYTE_FIELD
 #undef NOBARRIER_READ_BYTE_FIELD
 #undef NOBARRIER_WRITE_BYTE_FIELD
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_INL_H_