runtime/JSWrapperObject.h

   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