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/*
* Copyright (C) 2012-2017 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include "JSObject.h"
namespace JSC {
struct ClassInfo;
class JSDestructibleObject : public JSNonFinalObject {
public:
typedef JSNonFinalObject Base;
static const bool needsDestruction = true;
template<typename CellType>
static CompleteSubspace* subspaceFor(VM& vm)
{
return &vm.destructibleObjectSpace;
}
const ClassInfo* classInfo() const { return m_classInfo.unpoisoned(); }
static ptrdiff_t classInfoOffset() { return OBJECT_OFFSETOF(JSDestructibleObject, m_classInfo); }
protected:
JSDestructibleObject(VM& vm, Structure* structure, Butterfly* butterfly = 0)
: JSNonFinalObject(vm, structure, butterfly)
, m_classInfo(structure->classInfo())
{
ASSERT(m_classInfo);
}
private:
PoisonedClassInfoPtr m_classInfo;
};
} // namespace JSC