File indexing completed on 2024-06-23 05:48:52
0001 /* 0002 This file is part of the Okteta Kasten module, made within the KDE community. 0003 0004 SPDX-FileCopyrightText: 2007, 2009 Friedrich W. H. Kossebau <kossebau@kde.org> 0005 0006 SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL 0007 */ 0008 0009 #ifndef KASTEN_PODDATA_HPP 0010 #define KASTEN_PODDATA_HPP 0011 0012 // Okteta core 0013 #include <Okteta/Byte> 0014 #include <Okteta/OktetaCore> 0015 // Qt 0016 #include <QSysInfo> 0017 0018 namespace Okteta { 0019 0020 class PODData 0021 { 0022 public: 0023 static constexpr int Size = sizeof(double); 0024 0025 public: 0026 PODData(); 0027 PODData(const PODData&) = delete; 0028 0029 ~PODData() = default; 0030 0031 PODData& operator=(const PODData&) = delete; 0032 0033 public: 0034 void setByteOrder(QSysInfo::Endian byteOrder); 0035 bool updateRawData(int size); 0036 Byte* rawData(); 0037 0038 public: 0039 const Byte* originalData() const; 0040 const Byte* byteOrderSetData() const; 0041 QSysInfo::Endian byteOrder() const; 0042 0043 unsigned long bitValue(int noOfBitsToRead) const; 0044 void getPointers(const void** P8Bit, const void** P16Bit, const void** P32Bit, const void** P64Bit) const; 0045 const void* pointer(int byteCount) const; 0046 int size() const; 0047 0048 private: 0049 // ensure strict alignment for double as needed on some architectures (e.g. PA-RISC) 0050 using Aligned64Bit = union 0051 { 0052 double mDummy; 0053 Byte mBytes[Size]; 0054 }; 0055 0056 private: 0057 Byte* mCurrentOriginalData = nullptr; 0058 Byte* mCurrentEndiannessSetData = nullptr; 0059 0060 Aligned64Bit mOriginalAligned64Bit; 0061 Aligned64Bit mByteOrderSetAligned64Bit; 0062 0063 int mCurrentSize = 0; 0064 QSysInfo::Endian mByteOrder = QSysInfo::ByteOrder; 0065 }; 0066 0067 } 0068 0069 #endif