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 ArgumentEncoder_h 27#define ArgumentEncoder_h 28 29#include "ArgumentCoder.h" 30#include "Attachment.h" 31#include <wtf/PassOwnPtr.h> 32#include <wtf/TypeTraits.h> 33#include <wtf/Vector.h> 34 35namespace CoreIPC { 36 37class ArgumentEncoder; 38 39class ArgumentEncoder { 40public: 41 static PassOwnPtr<ArgumentEncoder> create(uint64_t destinationID); 42 ~ArgumentEncoder(); 43 44 void encodeBytes(const uint8_t*, size_t); 45 46 void encodeBool(bool); 47 void encodeUInt32(uint32_t); 48 void encodeUInt64(uint64_t); 49 void encodeInt32(int32_t); 50 void encodeInt64(int64_t); 51 void encodeFloat(float); 52 void encodeDouble(double); 53 54 template<typename T> void encodeEnum(T t) 55 { 56 COMPILE_ASSERT(sizeof(T) <= sizeof(uint64_t), enum_type_must_not_be_larger_than_64_bits); 57 58 encodeUInt64(static_cast<uint64_t>(t)); 59 } 60 61 // Generic type encode function. 62 template<typename T> void encode(const T& t) 63 { 64 ArgumentCoder<T>::encode(this, t); 65 } 66 67 uint8_t* buffer() const { return m_buffer; } 68 size_t bufferSize() const { return m_bufferSize; } 69 70 void addAttachment(const Attachment&); 71 Vector<Attachment> releaseAttachments(); 72 73#ifndef NDEBUG 74 void debug(); 75#endif 76 77private: 78 explicit ArgumentEncoder(uint64_t destinationID); 79 uint8_t* grow(unsigned alignment, size_t size); 80 81 uint8_t* m_buffer; 82 uint8_t* m_bufferPointer; 83 84 size_t m_bufferSize; 85 size_t m_bufferCapacity; 86 87 Vector<Attachment> m_attachments; 88}; 89 90template<> inline void ArgumentEncoder::encode(const bool& n) 91{ 92 encodeBool(n); 93} 94 95template<> inline void ArgumentEncoder::encode(const uint32_t& n) 96{ 97 encodeUInt32(n); 98} 99 100template<> inline void ArgumentEncoder::encode(const uint64_t& n) 101{ 102 encodeUInt64(n); 103} 104 105template<> inline void ArgumentEncoder::encode(const int32_t& n) 106{ 107 encodeInt32(n); 108} 109 110template<> inline void ArgumentEncoder::encode(const int64_t& n) 111{ 112 encodeInt64(n); 113} 114 115template<> inline void ArgumentEncoder::encode(const float& n) 116{ 117 encodeFloat(n); 118} 119 120template<> inline void ArgumentEncoder::encode(const double& n) 121{ 122 encodeDouble(n); 123} 124 125} // namespace CoreIPC 126 127#endif // ArgumentEncoder_h 128