0b6a182c
 Hu Chunming
添加无鉴权注册和注销
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// Copyright (c) 2016-2022 Antony Polukhin
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
#ifndef BOOST_PFR_DETAIL_CONFIG_HPP
#define BOOST_PFR_DETAIL_CONFIG_HPP
#pragma once
#include <type_traits> // to get non standard platform macro definitions (__GLIBCXX__ for example)
// Reminder:
// * MSVC++ 14.2 _MSC_VER == 1927 <- Loophole is known to work (Visual Studio ????)
// * MSVC++ 14.1 _MSC_VER == 1916 <- Loophole is known to NOT work (Visual Studio 2017)
// * MSVC++ 14.0 _MSC_VER == 1900 (Visual Studio 2015)
// * MSVC++ 12.0 _MSC_VER == 1800 (Visual Studio 2013)
#if defined(_MSC_VER)
# if !defined(_MSVC_LANG) || _MSC_VER <= 1900
# error Boost.PFR library requires more modern MSVC compiler.
# endif
#elif __cplusplus < 201402L
# error Boost.PFR library requires at least C++14.
#endif
#ifndef BOOST_PFR_USE_LOOPHOLE
# if defined(_MSC_VER)
# if _MSC_VER >= 1927
# define BOOST_PFR_USE_LOOPHOLE 1
# else
# define BOOST_PFR_USE_LOOPHOLE 0
# endif
# elif defined(__clang_major__) && __clang_major__ >= 8
# define BOOST_PFR_USE_LOOPHOLE 0
# else
# define BOOST_PFR_USE_LOOPHOLE 1
# endif
#endif
#ifndef BOOST_PFR_USE_CPP17
# ifdef __cpp_structured_bindings
# define BOOST_PFR_USE_CPP17 1
# elif defined(_MSVC_LANG)
# if _MSVC_LANG >= 201703L
# define BOOST_PFR_USE_CPP17 1
# else
# define BOOST_PFR_USE_CPP17 0
# endif
# else
# define BOOST_PFR_USE_CPP17 0
# endif
#endif
#if (!BOOST_PFR_USE_CPP17 && !BOOST_PFR_USE_LOOPHOLE)
# if (defined(_MSC_VER) && _MSC_VER < 1916) ///< in Visual Studio 2017 v15.9 PFR library with classic engine normally works
# error Boost.PFR requires /std:c++latest or /std:c++17 flags on your compiler.
# endif
#endif
#ifndef BOOST_PFR_USE_STD_MAKE_INTEGRAL_SEQUENCE
// Assume that libstdc++ since GCC-7.3 does not have linear instantiation depth in std::make_integral_sequence
# if defined( __GLIBCXX__) && __GLIBCXX__ >= 20180101
# define BOOST_PFR_USE_STD_MAKE_INTEGRAL_SEQUENCE 1
# elif defined(_MSC_VER)
# define BOOST_PFR_USE_STD_MAKE_INTEGRAL_SEQUENCE 1
//# elif other known working lib
# else
# define BOOST_PFR_USE_STD_MAKE_INTEGRAL_SEQUENCE 0
# endif
#endif
#ifndef BOOST_PFR_HAS_GUARANTEED_COPY_ELISION
# if defined(__cpp_guaranteed_copy_elision) && (!defined(_MSC_VER) || _MSC_VER > 1928)
# define BOOST_PFR_HAS_GUARANTEED_COPY_ELISION 1
# else
# define BOOST_PFR_HAS_GUARANTEED_COPY_ELISION 0
# endif
#endif
#if defined(__has_cpp_attribute)
# if __has_cpp_attribute(maybe_unused)
# define BOOST_PFR_MAYBE_UNUSED [[maybe_unused]]
# endif
#endif
#ifndef BOOST_PFR_MAYBE_UNUSED
# define BOOST_PFR_MAYBE_UNUSED
#endif
#endif // BOOST_PFR_DETAIL_CONFIG_HPP
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