Changed the global object representation

src/objects-inl.h

 // Copyright 2006-2008 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 35 matching lines @@
 PropertyDetails::PropertyDetails(Smi* smi) {
   value_ = smi->value();
 }
 
 
 Smi* PropertyDetails::AsSmi() {
   return Smi::FromInt(value_);
 }
 
 
+PropertyDetails PropertyDetails::AsDeleted() {
+  PropertyDetails d(DONT_ENUM, NORMAL);
+  Smi* smi = Smi::FromInt(AsSmi()->value() | DeletedField::encode(1));
+  return PropertyDetails(smi);
+}
+
+
 #define CAST_ACCESSOR(type)                     \
   type* type::cast(Object* object) {            \
     ASSERT(object->Is##type());                 \
     return reinterpret_cast<type*>(object);     \
   }
 
 
 #define INT_ACCESSORS(holder, name, offset)                             \
   int holder::name() { return READ_INT_FIELD(this, offset); }           \
   void holder::set_##name(int value) { WRITE_INT_FIELD(this, offset, value); }
@@ skipping 336 matching lines @@
     && HeapObject::cast(this)->map()->instance_type() == CODE_TYPE;
 }
 
 
 bool Object::IsOddball() {
   return Object::IsHeapObject()
     && HeapObject::cast(this)->map()->instance_type() == ODDBALL_TYPE;
 }
 
 
+bool Object::IsJSGlobalPropertyCell() {
+  return Object::IsHeapObject()
+      && HeapObject::cast(this)->map()->instance_type()
+      == JS_GLOBAL_PROPERTY_CELL_TYPE;
+}
+
+
 bool Object::IsSharedFunctionInfo() {
   return Object::IsHeapObject() &&
       (HeapObject::cast(this)->map()->instance_type() ==
        SHARED_FUNCTION_INFO_TYPE);
 }
 
 
 bool Object::IsJSValue() {
   return Object::IsHeapObject()
     && HeapObject::cast(this)->map()->instance_type() == JS_VALUE_TYPE;
@@ skipping 611 matching lines @@
 void JSObject::initialize_elements() {
   ASSERT(!Heap::InNewSpace(Heap::empty_fixed_array()));
   WRITE_FIELD(this, kElementsOffset, Heap::empty_fixed_array());
 }
 
 
 ACCESSORS(Oddball, to_string, String, kToStringOffset)
 ACCESSORS(Oddball, to_number, Object, kToNumberOffset)
 
 
+ACCESSORS(JSGlobalPropertyCell, value, Object, kValueOffset)
+
 int JSObject::GetHeaderSize() {
   switch (map()->instance_type()) {
     case JS_GLOBAL_PROXY_TYPE:
       return JSGlobalProxy::kSize;
     case JS_GLOBAL_OBJECT_TYPE:
       return JSGlobalObject::kSize;
     case JS_BUILTINS_OBJECT_TYPE:
       return JSBuiltinsObject::kSize;
     case JS_FUNCTION_TYPE:
       return JSFunction::kSize;
@@ skipping 337 matching lines @@
 CAST_ACCESSOR(SlicedString)
 CAST_ACCESSOR(ExternalString)
 CAST_ACCESSOR(ExternalAsciiString)
 CAST_ACCESSOR(ExternalTwoByteString)
 CAST_ACCESSOR(JSObject)
 CAST_ACCESSOR(Smi)
 CAST_ACCESSOR(Failure)
 CAST_ACCESSOR(HeapObject)
 CAST_ACCESSOR(HeapNumber)
 CAST_ACCESSOR(Oddball)
+CAST_ACCESSOR(JSGlobalPropertyCell)
 CAST_ACCESSOR(SharedFunctionInfo)
 CAST_ACCESSOR(Map)
 CAST_ACCESSOR(JSFunction)
 CAST_ACCESSOR(GlobalObject)
 CAST_ACCESSOR(JSGlobalProxy)
 CAST_ACCESSOR(JSGlobalObject)
 CAST_ACCESSOR(JSBuiltinsObject)
 CAST_ACCESSOR(Code)
 CAST_ACCESSOR(JSArray)
 CAST_ACCESSOR(JSRegExp)
@@ skipping 1265 matching lines @@
 #undef WRITE_INT_FIELD
 #undef READ_SHORT_FIELD
 #undef WRITE_SHORT_FIELD
 #undef READ_BYTE_FIELD
 #undef WRITE_BYTE_FIELD
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_INL_H_