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Commit	Line	Data
	1	/*
	2	* Copyright (C) 2014 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. ``AS IS'' AND ANY
	14	* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	15	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
	16	* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
	17	* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
	18	* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
	19	* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
	20	* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
	21	* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	22	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
	23	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	24	*/
	25
	26	#ifndef GetByIdVariant_h
	27	#define GetByIdVariant_h
	28
	29	#include "CallLinkStatus.h"
	30	#include "ConstantStructureCheck.h"
	31	#include "IntendedStructureChain.h"
	32	#include "JSCJSValue.h"
	33	#include "PropertyOffset.h"
	34	#include "StructureSet.h"
	35
	36	namespace JSC {
	37
	38	class CallLinkStatus;
	39	class GetByIdStatus;
	40	struct DumpContext;
	41
	42	class GetByIdVariant {
	43	public:
	44	GetByIdVariant(
	45	const StructureSet& structureSet = StructureSet(), PropertyOffset offset = invalidOffset,
	46	const IntendedStructureChain* chain = nullptr,
	47	std::unique_ptr<CallLinkStatus> callLinkStatus = nullptr);
	48
	49	~GetByIdVariant();
	50
	51	GetByIdVariant(const GetByIdVariant&);
	52	GetByIdVariant& operator=(const GetByIdVariant&);
	53
	54	bool isSet() const { return !!m_structureSet.size(); }
	55	bool operator!() const { return !isSet(); }
	56	const StructureSet& structureSet() const { return m_structureSet; }
	57	StructureSet& structureSet() { return m_structureSet; }
	58	const ConstantStructureCheckVector& constantChecks() const { return m_constantChecks; }
	59	JSObject* alternateBase() const { return m_alternateBase; }
	60	StructureSet baseStructure() const;
	61	PropertyOffset offset() const { return m_offset; }
	62	CallLinkStatus* callLinkStatus() const { return m_callLinkStatus.get(); }
	63
	64	bool attemptToMerge(const GetByIdVariant& other);
	65
	66	void dump(PrintStream&) const;
	67	void dumpInContext(PrintStream&, DumpContext*) const;
	68
	69	private:
	70	friend class GetByIdStatus;
	71
	72	StructureSet m_structureSet;
	73	ConstantStructureCheckVector m_constantChecks;
	74	JSObject* m_alternateBase;
	75	PropertyOffset m_offset;
	76	std::unique_ptr<CallLinkStatus> m_callLinkStatus;
	77	};
	78
	79	} // namespace JSC
	80
	81	#endif // GetByIdVariant_h
	82