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/*
* Copyright (C) 2010 Google 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 AND ITS CONTRIBUTORS "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 OR ITS 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 DataView_h
#define DataView_h
#include "ArrayBufferView.h"
#include "ExceptionCode.h"
#include <wtf/PassRefPtr.h>
namespace WebCore {
class DataView : public ArrayBufferView {
public:
static PassRefPtr<DataView> create(PassRefPtr<ArrayBuffer>, unsigned byteOffset, unsigned byteLength);
virtual bool isDataView() const { return true; }
virtual unsigned length() const { return m_byteLength; }
virtual unsigned byteLength() const { return m_byteLength; }
virtual PassRefPtr<ArrayBufferView> slice(int, int) const { return 0; }
char getInt8(unsigned byteOffset, ExceptionCode&);
unsigned char getUint8(unsigned byteOffset, ExceptionCode&);
short getInt16(unsigned byteOffset, ExceptionCode& ec) { return getInt16(byteOffset, false, ec); }
short getInt16(unsigned byteOffset, bool littleEndian, ExceptionCode&);
unsigned short getUint16(unsigned byteOffset, ExceptionCode& ec) { return getUint16(byteOffset, false, ec); }
unsigned short getUint16(unsigned byteOffset, bool littleEndian, ExceptionCode&);
int getInt32(unsigned byteOffset, ExceptionCode& ec) { return getInt32(byteOffset, false, ec); }
int getInt32(unsigned byteOffset, bool littleEndian, ExceptionCode&);
unsigned getUint32(unsigned byteOffset, ExceptionCode& ec) { return getUint32(byteOffset, false, ec); }
unsigned getUint32(unsigned byteOffset, bool littleEndian, ExceptionCode&);
float getFloat32(unsigned byteOffset, ExceptionCode& ec) { return getFloat32(byteOffset, false, ec); }
float getFloat32(unsigned byteOffset, bool littleEndian, ExceptionCode&);
double getFloat64(unsigned byteOffset, ExceptionCode& ec) { return getFloat64(byteOffset, false, ec); }
double getFloat64(unsigned byteOffset, bool littleEndian, ExceptionCode&);
void setInt8(unsigned byteOffset, char value, ExceptionCode&);
void setUint8(unsigned byteOffset, unsigned char value, ExceptionCode&);
void setInt16(unsigned byteOffset, short value, ExceptionCode& ec) { setInt16(byteOffset, value, false, ec); }
void setInt16(unsigned byteOffset, short value, bool littleEndian, ExceptionCode&);
void setUint16(unsigned byteOffset, unsigned short value, ExceptionCode& ec) { setUint16(byteOffset, value, false, ec); }
void setUint16(unsigned byteOffset, unsigned short value, bool littleEndian, ExceptionCode&);
void setInt32(unsigned byteOffset, int value, ExceptionCode& ec) { setInt32(byteOffset, value, false, ec); }
void setInt32(unsigned byteOffset, int value, bool littleEndian, ExceptionCode&);
void setUint32(unsigned byteOffset, unsigned value, ExceptionCode& ec) { setUint32(byteOffset, value, false, ec); }
void setUint32(unsigned byteOffset, unsigned value, bool littleEndian, ExceptionCode&);
void setFloat32(unsigned byteOffset, float value, ExceptionCode& ec) { setFloat32(byteOffset, value, false, ec); }
void setFloat32(unsigned byteOffset, float value, bool littleEndian, ExceptionCode&);
void setFloat64(unsigned byteOffset, double value, ExceptionCode& ec) { setFloat64(byteOffset, value, false, ec); }
void setFloat64(unsigned byteOffset, double value, bool littleEndian, ExceptionCode&);
private:
DataView(PassRefPtr<ArrayBuffer>, unsigned byteOffset, unsigned byteLength);
template<typename T>
inline bool beyondRange(unsigned byteOffset) const { return byteOffset + sizeof(T) > m_byteLength; }
template<typename T>
T getData(unsigned byteOffset, bool littleEndian, ExceptionCode&) const;
template<typename T>
void setData(unsigned byteOffset, T value, bool littleEndian, ExceptionCode&);
unsigned m_byteLength;
};
} // namespace WebCore
#endif // DataView_h
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