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      1 /*
      2  *  Copyright (C) 2006 Maks Orlovich
      3  *  Copyright (C) 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
      4  *
      5  *  This library is free software; you can redistribute it and/or
      6  *  modify it under the terms of the GNU Library General Public
      7  *  License as published by the Free Software Foundation; either
      8  *  version 2 of the License, or (at your option) any later version.
      9  *
     10  *  This library is distributed in the hope that it will be useful,
     11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
     12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     13  *  Library General Public License for more details.
     14  *
     15  *  You should have received a copy of the GNU Library General Public License
     16  *  along with this library; see the file COPYING.LIB.  If not, write to
     17  *  the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     18  *  Boston, MA 02110-1301, USA.
     19  *
     20  */
     21 
     22 #ifndef JSWrapperObject_h
     23 #define JSWrapperObject_h
     24 
     25 #include "JSObject.h"
     26 
     27 namespace JSC {
     28 
     29     // This class is used as a base for classes such as String,
     30     // Number, Boolean and Date which are wrappers for primitive types.
     31     class JSWrapperObject : public JSObject {
     32     protected:
     33         explicit JSWrapperObject(NonNullPassRefPtr<Structure>);
     34 
     35     public:
     36         JSValue internalValue() const { return m_internalValue; }
     37         void setInternalValue(JSValue);
     38 
     39         static PassRefPtr<Structure> createStructure(JSValue prototype)
     40         {
     41             return Structure::create(prototype, TypeInfo(ObjectType, StructureFlags), AnonymousSlotCount);
     42         }
     43 
     44     protected:
     45         static const unsigned AnonymousSlotCount = 1 + JSObject::AnonymousSlotCount;
     46 
     47     private:
     48         virtual void markChildren(MarkStack&);
     49 
     50         JSValue m_internalValue;
     51     };
     52 
     53     inline JSWrapperObject::JSWrapperObject(NonNullPassRefPtr<Structure> structure)
     54         : JSObject(structure)
     55     {
     56         putAnonymousValue(0, jsNull());
     57     }
     58 
     59     inline void JSWrapperObject::setInternalValue(JSValue value)
     60     {
     61         ASSERT(value);
     62         ASSERT(!value.isObject());
     63         m_internalValue = value;
     64         putAnonymousValue(0, value);
     65     }
     66 
     67 } // namespace JSC
     68 
     69 #endif // JSWrapperObject_h
     70