blob: 11c181dd61e7eb6754eba97054bf12a503fb88a7 [file] [log] [blame]
/*
* Copyright (C) 2013, 2014 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 "ClassInfo.h"
#include "JSCast.h"
#include "JSTypeInfo.h"
#include "PropertyOffset.h"
#include "PropertySlot.h"
namespace JSC {
class JSPropertyNameEnumerator;
class Structure;
class ObjectToStringAdaptiveStructureWatchpoint;
class ObjectToStringAdaptiveInferredPropertyValueWatchpoint;
class StructureRareData final : public JSCell {
public:
typedef JSCell Base;
static const unsigned StructureFlags = Base::StructureFlags | StructureIsImmortal;
template<typename CellType>
static IsoSubspace* subspaceFor(VM& vm)
{
return &vm.structureRareDataSpace;
}
static StructureRareData* create(VM&, Structure*);
static const bool needsDestruction = true;
static void destroy(JSCell*);
static void visitChildren(JSCell*, SlotVisitor&);
static Structure* createStructure(VM&, JSGlobalObject*, JSValue prototype);
Structure* previousID() const;
void setPreviousID(VM&, Structure*);
void clearPreviousID();
JSString* objectToStringValue() const;
void setObjectToStringValue(ExecState*, VM&, Structure* baseStructure, JSString* value, PropertySlot toStringTagSymbolSlot);
JSPropertyNameEnumerator* cachedPropertyNameEnumerator() const;
void setCachedPropertyNameEnumerator(VM&, JSPropertyNameEnumerator*);
Box<InlineWatchpointSet> copySharedPolyProtoWatchpoint() const { return m_polyProtoWatchpoint; }
const Box<InlineWatchpointSet>& sharedPolyProtoWatchpoint() const { return m_polyProtoWatchpoint; }
void setSharedPolyProtoWatchpoint(Box<InlineWatchpointSet>&& sharedPolyProtoWatchpoint) { m_polyProtoWatchpoint = WTFMove(sharedPolyProtoWatchpoint); }
bool hasSharedPolyProtoWatchpoint() const { return static_cast<bool>(m_polyProtoWatchpoint); }
DECLARE_EXPORT_INFO;
private:
friend class Structure;
friend class ObjectToStringAdaptiveStructureWatchpoint;
friend class ObjectToStringAdaptiveInferredPropertyValueWatchpoint;
void clearObjectToStringValue();
StructureRareData(VM&, Structure*);
WriteBarrier<Structure> m_previous;
WriteBarrier<JSString> m_objectToStringValue;
WriteBarrier<JSPropertyNameEnumerator> m_cachedPropertyNameEnumerator;
typedef HashMap<PropertyOffset, RefPtr<WatchpointSet>, WTF::IntHash<PropertyOffset>, WTF::UnsignedWithZeroKeyHashTraits<PropertyOffset>> PropertyWatchpointMap;
std::unique_ptr<PropertyWatchpointMap> m_replacementWatchpointSets;
Bag<ObjectToStringAdaptiveStructureWatchpoint> m_objectToStringAdaptiveWatchpointSet;
std::unique_ptr<ObjectToStringAdaptiveInferredPropertyValueWatchpoint> m_objectToStringAdaptiveInferredValueWatchpoint;
Box<InlineWatchpointSet> m_polyProtoWatchpoint;
bool m_giveUpOnObjectToStringValueCache;
};
} // namespace JSC