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annotate Resources/Orthanc/Core/Compatibility.h @ 1:fef9a239df5c

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author Sebastien Jodogne <s.jodogne@gmail.com>
date Thu, 26 Mar 2020 18:50:10 +0100
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1 /**
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2 * Orthanc - A Lightweight, RESTful DICOM Store
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3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
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4 * Department, University Hospital of Liege, Belgium
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5 * Copyright (C) 2017-2020 Osimis S.A., Belgium
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6 *
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7 * This program is free software: you can redistribute it and/or
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8 * modify it under the terms of the GNU General Public License as
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9 * published by the Free Software Foundation, either version 3 of the
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10 * License, or (at your option) any later version.
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11 *
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12 * In addition, as a special exception, the copyright holders of this
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13 * program give permission to link the code of its release with the
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14 * OpenSSL project's "OpenSSL" library (or with modified versions of it
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15 * that use the same license as the "OpenSSL" library), and distribute
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16 * the linked executables. You must obey the GNU General Public License
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17 * in all respects for all of the code used other than "OpenSSL". If you
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18 * modify file(s) with this exception, you may extend this exception to
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19 * your version of the file(s), but you are not obligated to do so. If
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20 * you do not wish to do so, delete this exception statement from your
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21 * version. If you delete this exception statement from all source files
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22 * in the program, then also delete it here.
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23 *
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24 * This program is distributed in the hope that it will be useful, but
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25 * WITHOUT ANY WARRANTY; without even the implied warranty of
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26 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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27 * General Public License for more details.
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28 *
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29 * You should have received a copy of the GNU General Public License
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30 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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31 **/
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32
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33
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34 #pragma once
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35
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36 //#define Orthanc_Compatibility_h_STR2(x) #x
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37 //#define Orthanc_Compatibility_h_STR1(x) Orthanc_Compatibility_h_STR2(x)
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38
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39 //#pragma message("__cplusplus = " Orthanc_Compatibility_h_STR1(__cplusplus))
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40
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41 #if (defined _MSC_VER)
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42 //# pragma message("_MSC_VER = " Orthanc_Compatibility_h_STR1(_MSC_VER))
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43 //# pragma message("_MSVC_LANG = " Orthanc_Compatibility_h_STR1(_MSVC_LANG))
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44 // The __cplusplus macro cannot be used in Visual C++ < 1914 (VC++ 15.7)
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45 // However, even in recent versions, __cplusplus will only be correct (that is,
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46 // correctly defines the supported C++ version) if a special flag is passed to
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47 // the compiler ("/Zc:__cplusplus")
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48 // To make this header more robust, we use the _MSVC_LANG equivalent macro.
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49
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50 // please note that not all C++11 features are supported when _MSC_VER == 1600
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51 // (or higher). This header file can be made for fine-grained, if required,
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52 // based on specific _MSC_VER values
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53
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54 # if _MSC_VER >= 1600
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55 # define ORTHANC_Cxx03_DETECTED 0
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56 # else
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57 # define ORTHANC_Cxx03_DETECTED 1
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58 # endif
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59
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60 #else
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61 // of _MSC_VER is not defined, we assume __cplusplus is correctly defined
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62 // if __cplusplus is not defined (very old compilers??), then the following
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63 // test will compare 0 < 201103L and will be true --> safe.
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64 # if __cplusplus < 201103L
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65 # define ORTHANC_Cxx03_DETECTED 1
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66 # else
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67 # define ORTHANC_Cxx03_DETECTED 0
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68 # endif
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69 #endif
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70
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71 #if ORTHANC_Cxx03_DETECTED == 1
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72 //#pragma message("C++ 11 support is not present.")
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73
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74 /**
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75 * "std::unique_ptr" was introduced in C++11, and "std::auto_ptr" was
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76 * removed in C++17. We emulate "std::auto_ptr" using boost: "The
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77 * smart pointer unique_ptr [is] a drop-in replacement for
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78 * std::unique_ptr, usable also from C++03 compilers." This is only
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79 * available if Boost >= 1.57.0 (from November 2014).
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80 * https://www.boost.org/doc/libs/1_57_0/doc/html/move/reference.html#header.boost.move.unique_ptr_hpp
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81 **/
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82
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83 #include <boost/move/unique_ptr.hpp>
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84
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85 namespace std
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86 {
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87 template <typename T>
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88 class unique_ptr : public boost::movelib::unique_ptr<T>
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89 {
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90 public:
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91 explicit unique_ptr() :
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92 boost::movelib::unique_ptr<T>()
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93 {
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94 }
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95
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96 explicit unique_ptr(T* p) :
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97 boost::movelib::unique_ptr<T>(p)
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98 {
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99 }
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100 };
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101 }
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102 #else
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103 //# pragma message("C++ 11 support is present.")
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104 # include <memory>
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105 #endif