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Commit	Line	Data
	1	/*
	2	* Copyright (C) 2013 Apple Inc. All rights reserved.
	3	*
	4	* Redistribution and use in source and binary forms, with or without
	5	* modification, are permitted provided that the following conditions
	6	* are met:
	7	* 1. Redistributions of source code must retain the above copyright
	8	* notice, this list of conditions and the following disclaimer.
	9	* 2. Redistributions in binary form must reproduce the above copyright
	10	* notice, this list of conditions and the following disclaimer in the
	11	* documentation and/or other materials provided with the distribution.
	12	*
	13	* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
	14	* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
	15	* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
	16	* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
	17	* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
	18	* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
	19	* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
	20	* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
	21	* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
	22	* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
	23	* THE POSSIBILITY OF SUCH DAMAGE.
	24	*/
	25
	26	#ifndef StructureRareData_h
	27	#define StructureRareData_h
	28
	29	#include "ClassInfo.h"
	30	#include "JSCell.h"
	31	#include "JSTypeInfo.h"
	32
	33	namespace JSC {
	34
	35	class JSPropertyNameIterator;
	36	class Structure;
	37
	38	class StructureRareData : public JSCell {
	39	friend class Structure;
	40	public:
	41	static StructureRareData* create(VM&, Structure*);
	42	static StructureRareData* clone(VM&, const StructureRareData* other);
	43
	44	static void visitChildren(JSCell*, SlotVisitor&);
	45
	46	static Structure* createStructure(VM&, JSGlobalObject*, JSValue prototype);
	47
	48	// Returns true if this StructureRareData should also be cloned when cloning the owner Structure.
	49	bool needsCloning() const { return false; }
	50
	51	Structure* previousID() const;
	52	void setPreviousID(VM&, Structure*);
	53	void clearPreviousID();
	54
	55	JSString* objectToStringValue() const;
	56	void setObjectToStringValue(VM&, JSString* value);
	57
	58	JSPropertyNameIterator* enumerationCache();
	59	void setEnumerationCache(VM&, JSPropertyNameIterator* value);
	60
	61	DECLARE_EXPORT_INFO;
	62
	63	private:
	64	StructureRareData(VM&, Structure*);
	65	StructureRareData(VM&, const StructureRareData*);
	66
	67	static const unsigned StructureFlags = OverridesVisitChildren \| JSCell::StructureFlags;
	68
	69	WriteBarrier<Structure> m_previous;
	70	WriteBarrier<JSString> m_objectToStringValue;
	71	WriteBarrier<JSPropertyNameIterator> m_enumerationCache;
	72	};
	73
	74	} // namespace JSC
	75
	76	#endif // StructureRareData_h