| 1 | // Copyright (c) 2016-2024 Antony Polukhin |
|---|
| 2 | // Copyright (c) 2022 Denis Mikhailov |
|---|
| 3 | // |
|---|
| 4 | // Distributed under the Boost Software License, Version 1.0. (See accompanying |
|---|
| 5 | // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) |
|---|
| 6 | |
|---|
| 7 | #ifndef BOOST_PFR_CONFIG_HPP |
|---|
| 8 | #define BOOST_PFR_CONFIG_HPP |
|---|
| 9 | #pragma once |
|---|
| 10 | |
|---|
| 11 | #if __cplusplus >= 201402L || (defined(_MSC_VER) && defined(_MSVC_LANG) && _MSC_VER > 1900) |
|---|
| 12 | #include <type_traits> // to get non standard platform macro definitions (__GLIBCXX__ for example) |
|---|
| 13 | #endif |
|---|
| 14 | |
|---|
| 15 | /// \file boost/pfr/config.hpp |
|---|
| 16 | /// Contains all the macros that describe Boost.PFR configuration, like BOOST_PFR_ENABLED |
|---|
| 17 | /// |
|---|
| 18 | /// \note This header file doesn't require C++14 Standard and supports all C++ compilers, even pre C++14 compilers (C++11, C++03...). |
|---|
| 19 | |
|---|
| 20 | // Reminder: |
|---|
| 21 | // * MSVC++ 14.2 _MSC_VER == 1927 <- Loophole is known to work (Visual Studio ????) |
|---|
| 22 | // * MSVC++ 14.1 _MSC_VER == 1916 <- Loophole is known to NOT work (Visual Studio 2017) |
|---|
| 23 | // * MSVC++ 14.0 _MSC_VER == 1900 (Visual Studio 2015) |
|---|
| 24 | // * MSVC++ 12.0 _MSC_VER == 1800 (Visual Studio 2013) |
|---|
| 25 | |
|---|
| 26 | #ifdef BOOST_PFR_NOT_SUPPORTED |
|---|
| 27 | # error Please, do not set BOOST_PFR_NOT_SUPPORTED value manually, use '-DBOOST_PFR_ENABLED=0' instead of it |
|---|
| 28 | #endif |
|---|
| 29 | |
|---|
| 30 | #if defined(_MSC_VER) |
|---|
| 31 | # if !defined(_MSVC_LANG) || _MSC_VER <= 1900 |
|---|
| 32 | # define BOOST_PFR_NOT_SUPPORTED 1 |
|---|
| 33 | # endif |
|---|
| 34 | #elif __cplusplus < 201402L |
|---|
| 35 | # define BOOST_PFR_NOT_SUPPORTED 1 |
|---|
| 36 | #endif |
|---|
| 37 | |
|---|
| 38 | #ifndef BOOST_PFR_USE_LOOPHOLE |
|---|
| 39 | # if defined(_MSC_VER) |
|---|
| 40 | # if _MSC_VER >= 1927 |
|---|
| 41 | # define BOOST_PFR_USE_LOOPHOLE 1 |
|---|
| 42 | # else |
|---|
| 43 | # define BOOST_PFR_USE_LOOPHOLE 0 |
|---|
| 44 | # endif |
|---|
| 45 | # elif defined(__clang_major__) && __clang_major__ >= 8 |
|---|
| 46 | # define BOOST_PFR_USE_LOOPHOLE 0 |
|---|
| 47 | # else |
|---|
| 48 | # define BOOST_PFR_USE_LOOPHOLE 1 |
|---|
| 49 | # endif |
|---|
| 50 | #endif |
|---|
| 51 | |
|---|
| 52 | #ifndef BOOST_PFR_USE_CPP17 |
|---|
| 53 | # ifdef __cpp_structured_bindings |
|---|
| 54 | # define BOOST_PFR_USE_CPP17 1 |
|---|
| 55 | # elif defined(_MSVC_LANG) |
|---|
| 56 | # if _MSVC_LANG >= 201703L |
|---|
| 57 | # define BOOST_PFR_USE_CPP17 1 |
|---|
| 58 | # else |
|---|
| 59 | # define BOOST_PFR_USE_CPP17 0 |
|---|
| 60 | # endif |
|---|
| 61 | # else |
|---|
| 62 | # define BOOST_PFR_USE_CPP17 0 |
|---|
| 63 | # endif |
|---|
| 64 | #endif |
|---|
| 65 | |
|---|
| 66 | #if (!BOOST_PFR_USE_CPP17 && !BOOST_PFR_USE_LOOPHOLE) |
|---|
| 67 | # if (defined(_MSC_VER) && _MSC_VER < 1916) ///< in Visual Studio 2017 v15.9 PFR library with classic engine normally works |
|---|
| 68 | # define BOOST_PFR_NOT_SUPPORTED 1 |
|---|
| 69 | # endif |
|---|
| 70 | #endif |
|---|
| 71 | |
|---|
| 72 | #ifndef BOOST_PFR_USE_STD_MAKE_INTEGRAL_SEQUENCE |
|---|
| 73 | // Assume that libstdc++ since GCC-7.3 does not have linear instantiation depth in std::make_integral_sequence |
|---|
| 74 | # if defined( __GLIBCXX__) && __GLIBCXX__ >= 20180101 |
|---|
| 75 | # define BOOST_PFR_USE_STD_MAKE_INTEGRAL_SEQUENCE 1 |
|---|
| 76 | # elif defined(_MSC_VER) |
|---|
| 77 | # define BOOST_PFR_USE_STD_MAKE_INTEGRAL_SEQUENCE 1 |
|---|
| 78 | //# elif other known working lib |
|---|
| 79 | # else |
|---|
| 80 | # define BOOST_PFR_USE_STD_MAKE_INTEGRAL_SEQUENCE 0 |
|---|
| 81 | # endif |
|---|
| 82 | #endif |
|---|
| 83 | |
|---|
| 84 | #ifndef BOOST_PFR_HAS_GUARANTEED_COPY_ELISION |
|---|
| 85 | # if defined(__cpp_guaranteed_copy_elision) && (!defined(_MSC_VER) || _MSC_VER > 1928) |
|---|
| 86 | # define BOOST_PFR_HAS_GUARANTEED_COPY_ELISION 1 |
|---|
| 87 | # else |
|---|
| 88 | # define BOOST_PFR_HAS_GUARANTEED_COPY_ELISION 0 |
|---|
| 89 | # endif |
|---|
| 90 | #endif |
|---|
| 91 | |
|---|
| 92 | #ifndef BOOST_PFR_ENABLE_IMPLICIT_REFLECTION |
|---|
| 93 | # if defined(__cpp_lib_is_aggregate) |
|---|
| 94 | # define BOOST_PFR_ENABLE_IMPLICIT_REFLECTION 1 |
|---|
| 95 | # else |
|---|
| 96 | // There is no way to detect potential ability to be reflectable without std::is_aggregare |
|---|
| 97 | # define BOOST_PFR_ENABLE_IMPLICIT_REFLECTION 0 |
|---|
| 98 | # endif |
|---|
| 99 | #endif |
|---|
| 100 | |
|---|
| 101 | #ifndef BOOST_PFR_CORE_NAME_ENABLED |
|---|
| 102 | # if (__cplusplus >= 202002L) || (defined(_MSVC_LANG) && (_MSVC_LANG >= 202002L)) |
|---|
| 103 | # if (defined(__cpp_nontype_template_args) && __cpp_nontype_template_args >= 201911) \ |
|---|
| 104 | || (defined(__clang_major__) && __clang_major__ >= 12) |
|---|
| 105 | # define BOOST_PFR_CORE_NAME_ENABLED 1 |
|---|
| 106 | # else |
|---|
| 107 | # define BOOST_PFR_CORE_NAME_ENABLED 0 |
|---|
| 108 | # endif |
|---|
| 109 | # else |
|---|
| 110 | # define BOOST_PFR_CORE_NAME_ENABLED 0 |
|---|
| 111 | # endif |
|---|
| 112 | #endif |
|---|
| 113 | |
|---|
| 114 | |
|---|
| 115 | #ifndef BOOST_PFR_CORE_NAME_PARSING |
|---|
| 116 | # if defined(_MSC_VER) && !defined(__clang__) |
|---|
| 117 | # define BOOST_PFR_CORE_NAME_PARSING (sizeof("auto __cdecl boost::pfr::detail::name_of_field_impl<") - 1, sizeof(">(void) noexcept") - 1, backward("->")) |
|---|
| 118 | # elif defined(__clang__) |
|---|
| 119 | # define BOOST_PFR_CORE_NAME_PARSING (sizeof("auto boost::pfr::detail::name_of_field_impl() [MsvcWorkaround = ") - 1, sizeof("}]") - 1, backward(".")) |
|---|
| 120 | # elif defined(__GNUC__) |
|---|
| 121 | # define BOOST_PFR_CORE_NAME_PARSING (sizeof("consteval auto boost::pfr::detail::name_of_field_impl() [with MsvcWorkaround = ") - 1, sizeof(")]") - 1, backward("::")) |
|---|
| 122 | # else |
|---|
| 123 | // Default parser for other platforms... Just skip nothing! |
|---|
| 124 | # define BOOST_PFR_CORE_NAME_PARSING (0, 0, "") |
|---|
| 125 | # endif |
|---|
| 126 | #endif |
|---|
| 127 | |
|---|
| 128 | #if defined(__has_cpp_attribute) |
|---|
| 129 | # if __has_cpp_attribute(maybe_unused) |
|---|
| 130 | # define BOOST_PFR_MAYBE_UNUSED [[maybe_unused]] |
|---|
| 131 | # endif |
|---|
| 132 | #endif |
|---|
| 133 | |
|---|
| 134 | #ifndef BOOST_PFR_MAYBE_UNUSED |
|---|
| 135 | # define BOOST_PFR_MAYBE_UNUSED |
|---|
| 136 | #endif |
|---|
| 137 | |
|---|
| 138 | #ifndef BOOST_PFR_ENABLED |
|---|
| 139 | # ifdef BOOST_PFR_NOT_SUPPORTED |
|---|
| 140 | # define BOOST_PFR_ENABLED 0 |
|---|
| 141 | # else |
|---|
| 142 | # define BOOST_PFR_ENABLED 1 |
|---|
| 143 | # endif |
|---|
| 144 | #endif |
|---|
| 145 | |
|---|
| 146 | #undef BOOST_PFR_NOT_SUPPORTED |
|---|
| 147 | |
|---|
| 148 | #endif // BOOST_PFR_CONFIG_HPP |
|---|
| 149 | |
|---|
