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

/*
 * Copyright (C) 2013 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 JSDataView_h
#define JSDataView_h

#include "DataView.h"
#include "JSArrayBufferView.h"

namespace JSC {

class JSDataView : public JSArrayBufferView {
public:
    typedef JSArrayBufferView Base;
    static const unsigned elementSize = 1;
    
protected:
    JSDataView(VM&, ConstructionContext&, ArrayBuffer*);
    
public:
    static JSDataView* create(
        ExecState*, Structure*, PassRefPtr<ArrayBuffer>, unsigned byteOffset,
        unsigned byteLength);
    
    // Dummy methods, which don't actually work; these are just in place to
    // placate some template specialization we do elsewhere.
    static JSDataView* createUninitialized(ExecState*, Structure*, unsigned length);
    static JSDataView* create(ExecState*, Structure*, unsigned length);
    bool set(ExecState*, JSObject*, unsigned offset, unsigned length);
    
    ArrayBuffer* buffer() const { return m_buffer; }
    
    PassRefPtr<DataView> typedImpl();
    
    static const TypedArrayType TypedArrayStorageType = TypeDataView;

protected:
    static bool getOwnPropertySlot(JSObject*, ExecState*, PropertyName, PropertySlot&);

    static ArrayBuffer* slowDownAndWasteMemory(JSArrayBufferView*);
    static PassRefPtr<ArrayBufferView> getTypedArrayImpl(JSArrayBufferView*);
    
public:
    static Structure* createStructure(VM&, JSGlobalObject*, JSValue prototype);
    
    DECLARE_EXPORT_INFO;

private:
    ArrayBuffer* m_buffer;
};

} // namespace JSC

#endif // JSDataView_h
Commit	Line	Data
81345200 A	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. ``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 JSDataView_h
	27	#define JSDataView_h
	28
	29	#include "DataView.h"
	30	#include "JSArrayBufferView.h"
	31
	32	namespace JSC {
	33
	34	class JSDataView : public JSArrayBufferView {
	35	public:
	36	typedef JSArrayBufferView Base;
	37	static const unsigned elementSize = 1;
	38
	39	protected:
	40	JSDataView(VM&, ConstructionContext&, ArrayBuffer*);
	41
	42	public:
	43	static JSDataView* create(
	44	ExecState, Structure, PassRefPtr<ArrayBuffer>, unsigned byteOffset,
	45	unsigned byteLength);
	46
	47	// Dummy methods, which don't actually work; these are just in place to
	48	// placate some template specialization we do elsewhere.
	49	static JSDataView* createUninitialized(ExecState, Structure, unsigned length);
	50	static JSDataView* create(ExecState, Structure, unsigned length);
	51	bool set(ExecState, JSObject, unsigned offset, unsigned length);
	52
	53	ArrayBuffer* buffer() const { return m_buffer; }
	54
	55	PassRefPtr<DataView> typedImpl();
	56
	57	static const TypedArrayType TypedArrayStorageType = TypeDataView;
	58
	59	protected:
	60	static bool getOwnPropertySlot(JSObject, ExecState, PropertyName, PropertySlot&);
	61
	62	static ArrayBuffer* slowDownAndWasteMemory(JSArrayBufferView*);
	63	static PassRefPtr<ArrayBufferView> getTypedArrayImpl(JSArrayBufferView*);
	64
65	public:
66	static Structure* createStructure(VM&, JSGlobalObject*, JSValue prototype);
67
68	DECLARE_EXPORT_INFO;
69
70	private:
71	ArrayBuffer* m_buffer;
72	};
73
74	} // namespace JSC
75
76	#endif // JSDataView_h
77