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	1	/*
	2	* Copyright (C) 2015 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 GenericArguments_h
	27	#define GenericArguments_h
	28
	29	#include "JSObject.h"
	30
	31	namespace JSC {
	32
	33	// This is a mixin for the two kinds of Arguments-class objects that arise when you say
	34	// "arguments" inside a function. This class doesn't show up in the JSCell inheritance hierarchy.
	35	template<typename Type>
	36	class GenericArguments : public JSNonFinalObject {
	37	public:
	38	typedef JSNonFinalObject Base;
	39	static const unsigned StructureFlags = Base::StructureFlags \| OverridesGetOwnPropertySlot \| InterceptsGetOwnPropertySlotByIndexEvenWhenLengthIsNotZero \| OverridesGetPropertyNames;
	40
	41	protected:
	42	GenericArguments(VM& vm, Structure* structure)
	43	: Base(vm, structure)
	44	{
	45	}
	46
	47	static bool getOwnPropertySlot(JSObject, ExecState, PropertyName, PropertySlot&);
	48	static bool getOwnPropertySlotByIndex(JSObject, ExecState, unsigned propertyName, PropertySlot&);
	49	static void getOwnPropertyNames(JSObject, ExecState, PropertyNameArray&, EnumerationMode);
	50	static void put(JSCell, ExecState, PropertyName, JSValue, PutPropertySlot&);
	51	static void putByIndex(JSCell, ExecState, unsigned propertyName, JSValue, bool shouldThrow);
	52	static bool deleteProperty(JSCell, ExecState, PropertyName);
	53	static bool deletePropertyByIndex(JSCell, ExecState, unsigned propertyName);
	54	static bool defineOwnProperty(JSObject, ExecState, PropertyName, const PropertyDescriptor&, bool shouldThrow);
	55
	56	void copyToArguments(ExecState*, VirtualRegister firstElementDest, unsigned offset, unsigned length);
	57	};
	58
	59	} // namespace JSC
	60
	61	#endif // GenericArguments_h
	62