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      1 /*
      2  *  Copyright (C) 1999-2001 Harri Porten (porten (at) kde.org)
      3  *  Copyright (C) 2001 Peter Kelly (pmk (at) post.com)
      4  *  Copyright (C) 2003, 2004, 2005, 2007, 2008 Apple Inc. All rights reserved.
      5  *
      6  *  This library is free software; you can redistribute it and/or
      7  *  modify it under the terms of the GNU Library General Public
      8  *  License as published by the Free Software Foundation; either
      9  *  version 2 of the License, or (at your option) any later version.
     10  *
     11  *  This library is distributed in the hope that it will be useful,
     12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
     13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     14  *  Library General Public License for more details.
     15  *
     16  *  You should have received a copy of the GNU Library General Public License
     17  *  along with this library; see the file COPYING.LIB.  If not, write to
     18  *  the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     19  *  Boston, MA 02110-1301, USA.
     20  *
     21  */
     22 
     23 #ifndef JSAPIValueWrapper_h
     24 #define JSAPIValueWrapper_h
     25 
     26 #include "JSCell.h"
     27 #include "CallFrame.h"
     28 #include "Structure.h"
     29 
     30 namespace JSC {
     31 
     32     class JSAPIValueWrapper : public JSCell {
     33         friend JSValue jsAPIValueWrapper(ExecState*, JSValue);
     34     public:
     35         JSValue value() const { return m_value.get(); }
     36 
     37         virtual bool isAPIValueWrapper() const { return true; }
     38 
     39         static Structure* createStructure(JSGlobalData& globalData, JSValue prototype)
     40         {
     41             return Structure::create(globalData, prototype, TypeInfo(CompoundType, OverridesMarkChildren | OverridesGetPropertyNames), AnonymousSlotCount, 0);
     42         }
     43 
     44 
     45     private:
     46         JSAPIValueWrapper(ExecState* exec, JSValue value)
     47             : JSCell(exec->globalData(), exec->globalData().apiWrapperStructure.get())
     48         {
     49             m_value.set(exec->globalData(), this, value);
     50             ASSERT(!value.isCell());
     51         }
     52 
     53         WriteBarrier<Unknown> m_value;
     54     };
     55 
     56     inline JSValue jsAPIValueWrapper(ExecState* exec, JSValue value)
     57     {
     58         return new (exec) JSAPIValueWrapper(exec, value);
     59     }
     60 
     61 } // namespace JSC
     62 
     63 #endif // JSAPIValueWrapper_h
     64