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97 lines
2.4 KiB
97 lines
2.4 KiB
4 years ago
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// MPark.Variant
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//
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// Copyright Michael Park, 2015-2017
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//
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// Distributed under the Boost Software License, Version 1.0.
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// (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
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#ifndef MPARK_CONFIG_HPP
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#define MPARK_CONFIG_HPP
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// MSVC 2015 Update 3.
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#if __cplusplus < 201103L && (!defined(_MSC_VER) || _MSC_FULL_VER < 190024210)
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#error "MPark.Variant requires C++11 support."
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#endif
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#ifndef __has_attribute
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#define __has_attribute(x) 0
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#endif
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#ifndef __has_builtin
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#define __has_builtin(x) 0
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#endif
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#ifndef __has_include
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#define __has_include(x) 0
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#endif
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#ifndef __has_feature
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#define __has_feature(x) 0
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#endif
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#if __has_attribute(always_inline) || defined(__GNUC__)
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#define MPARK_ALWAYS_INLINE __attribute__((__always_inline__)) inline
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#elif defined(_MSC_VER)
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#define MPARK_ALWAYS_INLINE __forceinline
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#else
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#define MPARK_ALWAYS_INLINE inline
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#endif
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#if __has_builtin(__builtin_addressof) || \
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(defined(__GNUC__) && __GNUC__ >= 7) || defined(_MSC_VER)
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#define MPARK_BUILTIN_ADDRESSOF
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#endif
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#if __has_builtin(__builtin_unreachable) || defined(__GNUC__)
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#define MPARK_BUILTIN_UNREACHABLE __builtin_unreachable()
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#elif defined(_MSC_VER)
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#define MPARK_BUILTIN_UNREACHABLE __assume(false)
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#else
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#define MPARK_BUILTIN_UNREACHABLE
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#endif
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#if __has_builtin(__type_pack_element)
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#define MPARK_TYPE_PACK_ELEMENT
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#endif
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#if defined(__cpp_constexpr) && __cpp_constexpr >= 200704 && \
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!(defined(__GNUC__) && __GNUC__ == 4 && __GNUC_MINOR__ == 9)
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#define MPARK_CPP11_CONSTEXPR
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#endif
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#if defined(__cpp_constexpr) && __cpp_constexpr >= 201304
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#define MPARK_CPP14_CONSTEXPR
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#endif
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#if __has_feature(cxx_exceptions) || defined(__cpp_exceptions) || \
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(defined(_MSC_VER) && defined(_CPPUNWIND))
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#define MPARK_EXCEPTIONS
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#endif
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#if defined(__cpp_generic_lambdas) || defined(_MSC_VER)
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#define MPARK_GENERIC_LAMBDAS
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#endif
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#if defined(__cpp_lib_integer_sequence)
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#define MPARK_INTEGER_SEQUENCE
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#endif
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#if defined(__cpp_return_type_deduction) || defined(_MSC_VER)
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#define MPARK_RETURN_TYPE_DEDUCTION
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#endif
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#if defined(__cpp_lib_transparent_operators) || defined(_MSC_VER)
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#define MPARK_TRANSPARENT_OPERATORS
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#endif
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#if defined(__cpp_variable_templates) || defined(_MSC_VER)
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#define MPARK_VARIABLE_TEMPLATES
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#endif
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#if !defined(__GLIBCXX__) || __has_include(<codecvt>) // >= libstdc++-5
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#define MPARK_TRIVIALITY_TYPE_TRAITS
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#define MPARK_INCOMPLETE_TYPE_TRAITS
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#endif
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#endif // MPARK_CONFIG_HPP
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