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annotate OrthancFramework/Sources/Compatibility.h @ 4542:3591305a727b Orthanc-1.7.2

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author Sebastien Jodogne <s.jodogne@gmail.com>
date Tue, 02 Mar 2021 16:52:21 +0100
parents bf7b9edf6b81
children 2007ab69ac16
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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 Lesser General Public License
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9 * as published by the Free Software Foundation, either version 3 of
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10 * the License, or (at your option) any later version.
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11 *
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12 * This program is distributed in the hope that it will be useful, but
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13 * WITHOUT ANY WARRANTY; without even the implied warranty of
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14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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15 * Lesser General Public License for more details.
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16 *
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17 * You should have received a copy of the GNU Lesser General Public
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18 * License along with this program. If not, see
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19 * <http://www.gnu.org/licenses/>.
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20 **/
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21
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22
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23 #pragma once
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24
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25 //#define Orthanc_Compatibility_h_STR2(x) #x
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26 //#define Orthanc_Compatibility_h_STR1(x) Orthanc_Compatibility_h_STR2(x)
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27
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28 //#pragma message("__cplusplus = " Orthanc_Compatibility_h_STR1(__cplusplus))
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29
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30 #if (defined _MSC_VER)
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31 //# pragma message("_MSC_VER = " Orthanc_Compatibility_h_STR1(_MSC_VER))
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32 //# pragma message("_MSVC_LANG = " Orthanc_Compatibility_h_STR1(_MSVC_LANG))
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33 // The __cplusplus macro cannot be used in Visual C++ < 1914 (VC++ 15.7)
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34 // However, even in recent versions, __cplusplus will only be correct (that is,
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35 // correctly defines the supported C++ version) if a special flag is passed to
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36 // the compiler ("/Zc:__cplusplus")
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37 // To make this header more robust, we use the _MSVC_LANG equivalent macro.
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38
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39 // please note that not all C++11 features are supported when _MSC_VER == 1600
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40 // (or higher). This header file can be made for fine-grained, if required,
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41 // based on specific _MSC_VER values
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42
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43 # if _MSC_VER >= 1600
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44 # define ORTHANC_Cxx03_DETECTED 0
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45 # else
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46 # define ORTHANC_Cxx03_DETECTED 1
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47 # endif
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48
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49 #else
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50 // of _MSC_VER is not defined, we assume __cplusplus is correctly defined
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51 // if __cplusplus is not defined (very old compilers??), then the following
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52 // test will compare 0 < 201103L and will be true --> safe.
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53 # if __cplusplus < 201103L
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54 # define ORTHANC_Cxx03_DETECTED 1
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55 # else
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56 # define ORTHANC_Cxx03_DETECTED 0
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57 # endif
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58 #endif
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59
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60 #if ORTHANC_Cxx03_DETECTED == 1
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61 //#pragma message("C++ 11 support is not present.")
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62
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63 /**
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64 * "std::unique_ptr" was introduced in C++11, and "std::auto_ptr" was
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65 * removed in C++17. We emulate "std::auto_ptr" using boost: "The
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66 * smart pointer unique_ptr [is] a drop-in replacement for
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67 * std::unique_ptr, usable also from C++03 compilers." This is only
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68 * available if Boost >= 1.57.0 (from November 2014).
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69 * https://www.boost.org/doc/libs/1_57_0/doc/html/move/reference.html#header.boost.move.unique_ptr_hpp
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70 **/
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71
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72 #include <boost/move/unique_ptr.hpp>
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73
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74 namespace std
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75 {
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76 template <typename T>
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77 class unique_ptr : public boost::movelib::unique_ptr<T>
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78 {
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79 public:
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80 explicit unique_ptr() :
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81 boost::movelib::unique_ptr<T>()
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82 {
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83 }
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84
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85 explicit unique_ptr(T* p) :
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86 boost::movelib::unique_ptr<T>(p)
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87 {
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88 }
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89 };
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90 }
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91 #else
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92 //# pragma message("C++ 11 support is present.")
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93 # include <memory>
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94 #endif