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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 JSNonFinalObject {
     32     protected:
     33         explicit JSWrapperObject(JSGlobalData&, Structure*);
     34 
     35     public:
     36         JSValue internalValue() const;
     37         void setInternalValue(JSGlobalData&, JSValue);
     38 
     39         static Structure* createStructure(JSGlobalData& globalData, JSValue prototype)
     40         {
     41             return Structure::create(globalData, prototype, TypeInfo(ObjectType, StructureFlags), AnonymousSlotCount, &s_info);
     42         }
     43 
     44     protected:
     45         static const unsigned StructureFlags = OverridesMarkChildren | JSNonFinalObject::StructureFlags;
     46 
     47     private:
     48         virtual void markChildren(MarkStack&);
     49 
     50         WriteBarrier<Unknown> m_internalValue;
     51     };
     52 
     53     inline JSWrapperObject::JSWrapperObject(JSGlobalData& globalData, Structure* structure)
     54         : JSNonFinalObject(globalData, structure)
     55     {
     56     }
     57 
     58     inline JSValue JSWrapperObject::internalValue() const
     59     {
     60         return m_internalValue.get();
     61     }
     62 
     63     inline void JSWrapperObject::setInternalValue(JSGlobalData& globalData, JSValue value)
     64     {
     65         ASSERT(value);
     66         ASSERT(!value.isObject());
     67         m_internalValue.set(globalData, this, value);
     68     }
     69 
     70 } // namespace JSC
     71 
     72 #endif // JSWrapperObject_h
     73