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/*
* Copyright (C) 2006 Maks Orlovich
* Copyright (C) 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#pragma once
#include "JSDestructibleObject.h"
namespace JSC {
// This class is used as a base for classes such as String,
// Number, Boolean and Date which are wrappers for primitive types.
class JSWrapperObject : public JSDestructibleObject {
public:
typedef JSDestructibleObject Base;
static size_t allocationSize(size_t inlineCapacity)
{
ASSERT_UNUSED(inlineCapacity, !inlineCapacity);
return sizeof(JSWrapperObject);
}
JSValue internalValue() const;
void setInternalValue(VM&, JSValue);
static Structure* createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype)
{
return Structure::create(vm, globalObject, prototype, TypeInfo(ObjectType, StructureFlags), info());
}
static ptrdiff_t internalValueOffset() { return OBJECT_OFFSETOF(JSWrapperObject, m_internalValue); }
static ptrdiff_t internalValueCellOffset()
{
#if USE(JSVALUE64)
return internalValueOffset();
#else
return internalValueOffset() + OBJECT_OFFSETOF(EncodedValueDescriptor, asBits.payload);
#endif
}
protected:
explicit JSWrapperObject(VM&, Structure*);
JS_EXPORT_PRIVATE static void visitChildren(JSCell*, SlotVisitor&);
private:
WriteBarrier<Unknown> m_internalValue;
};
inline JSWrapperObject::JSWrapperObject(VM& vm, Structure* structure)
: JSDestructibleObject(vm, structure)
{
}
inline JSValue JSWrapperObject::internalValue() const
{
return m_internalValue.get();
}
inline void JSWrapperObject::setInternalValue(VM& vm, JSValue value)
{
ASSERT(value);
ASSERT(!value.isObject());
m_internalValue.set(vm, this, value);
}
} // namespace JSC
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