1/* 2 * Copyright (C) 2010 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. AND ITS CONTRIBUTORS ``AS IS'' 14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS 17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 23 * THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26#ifndef DataReference_h 27#define DataReference_h 28 29#include <wtf/Vector.h> 30 31namespace CoreIPC { 32 33class ArgumentDecoder; 34class ArgumentEncoder; 35 36class DataReference { 37public: 38 DataReference() 39 : m_data(0) 40 , m_size(0) 41 { 42 } 43 44 DataReference(const uint8_t* data, size_t size) 45 : m_data(data) 46 , m_size(size) 47 { 48 } 49 50 template<size_t inlineCapacity> 51 DataReference(const Vector<uint8_t, inlineCapacity>& vector) 52 : m_data(vector.data()) 53 , m_size(vector.size()) 54 { 55 } 56 57 bool isEmpty() const { return size() == 0; } 58 59 size_t size() const { return m_size; } 60 const uint8_t* data() const 61 { 62 if (isEmpty()) 63 return 0; 64 return m_data; 65 } 66 67 Vector<uint8_t> vector() const 68 { 69 Vector<uint8_t> result; 70 result.append(m_data, m_size); 71 72 return result; 73 } 74 75 void encode(ArgumentEncoder&) const; 76 static bool decode(ArgumentDecoder&, DataReference&); 77 78private: 79 const uint8_t* m_data; 80 size_t m_size; 81}; 82 83} // namespace CoreIPC 84 85#endif // DataReference_h 86