[apple/javascriptcore.git] / runtime / GenericArguments.h

/*
 * Copyright (C) 2015 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. ``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
 * 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. 
 */

#ifndef GenericArguments_h
#define GenericArguments_h

#include "JSObject.h"

namespace JSC {

// This is a mixin for the two kinds of Arguments-class objects that arise when you say
// "arguments" inside a function. This class doesn't show up in the JSCell inheritance hierarchy.
template<typename Type>
class GenericArguments : public JSNonFinalObject {
public:
    typedef JSNonFinalObject Base;
    static const unsigned StructureFlags = Base::StructureFlags | OverridesGetOwnPropertySlot | InterceptsGetOwnPropertySlotByIndexEvenWhenLengthIsNotZero | OverridesGetPropertyNames;

protected:
    GenericArguments(VM& vm, Structure* structure)
        : Base(vm, structure)
    {
    }

    static bool getOwnPropertySlot(JSObject*, ExecState*, PropertyName, PropertySlot&);
    static bool getOwnPropertySlotByIndex(JSObject*, ExecState*, unsigned propertyName, PropertySlot&);
    static void getOwnPropertyNames(JSObject*, ExecState*, PropertyNameArray&, EnumerationMode);
    static void put(JSCell*, ExecState*, PropertyName, JSValue, PutPropertySlot&);
    static void putByIndex(JSCell*, ExecState*, unsigned propertyName, JSValue, bool shouldThrow);
    static bool deleteProperty(JSCell*, ExecState*, PropertyName);
    static bool deletePropertyByIndex(JSCell*, ExecState*, unsigned propertyName);
    static bool defineOwnProperty(JSObject*, ExecState*, PropertyName, const PropertyDescriptor&, bool shouldThrow);
    
    void copyToArguments(ExecState*, VirtualRegister firstElementDest, unsigned offset, unsigned length);
};

} // namespace JSC

#endif // GenericArguments_h
Commit	Line	Data
9dae56ea	1	/*
ed1e77d3	2	* Copyright (C) 2015 Apple Inc. All rights reserved.
9dae56ea A	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
ed1e77d3 A	26	#ifndef GenericArguments_h
ed1e77d3 A	27	#define GenericArguments_h
9dae56ea A	28
	29	#include "JSObject.h"
	30
	31	namespace JSC {
	32
ed1e77d3 A	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 {
81345200 A	37	public:
81345200 A	38	typedef JSNonFinalObject Base;
ed1e77d3	39	static const unsigned StructureFlags = Base::StructureFlags \| OverridesGetOwnPropertySlot \| InterceptsGetOwnPropertySlotByIndexEvenWhenLengthIsNotZero \| OverridesGetPropertyNames;
6fe7ccc8	40
ed1e77d3 A	41	protected:
	42	GenericArguments(VM& vm, Structure* structure)
	43	: Base(vm, structure)
81345200	44	{
81345200	45	}
6fe7ccc8	46
81345200	47	static bool getOwnPropertySlot(JSObject, ExecState, PropertyName, PropertySlot&);
ed1e77d3 A	48	static bool getOwnPropertySlotByIndex(JSObject, ExecState, unsigned propertyName, PropertySlot&);
ed1e77d3 A	49	static void getOwnPropertyNames(JSObject, ExecState, PropertyNameArray&, EnumerationMode);
81345200	50	static void put(JSCell, ExecState, PropertyName, JSValue, PutPropertySlot&);
ed1e77d3	51	static void putByIndex(JSCell, ExecState, unsigned propertyName, JSValue, bool shouldThrow);
81345200	52	static bool deleteProperty(JSCell, ExecState, PropertyName);
ed1e77d3	53	static bool deletePropertyByIndex(JSCell, ExecState, unsigned propertyName);
81345200	54	static bool defineOwnProperty(JSObject, ExecState, PropertyName, const PropertyDescriptor&, bool shouldThrow);
ed1e77d3 A	55
ed1e77d3 A	56	void copyToArguments(ExecState*, VirtualRegister firstElementDest, unsigned offset, unsigned length);
81345200	57	};
9dae56ea A	58
	59	} // namespace JSC
	60
ed1e77d3 A	61	#endif // GenericArguments_h
ed1e77d3 A	62