155 lines
3.0 KiB
C++
155 lines
3.0 KiB
C++
#ifndef BOOST_BIND_DETAIL_RESULT_TRAITS_HPP_INCLUDED
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#define BOOST_BIND_DETAIL_RESULT_TRAITS_HPP_INCLUDED
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// MS compatible compilers support #pragma once
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#if defined(_MSC_VER) && (_MSC_VER >= 1020)
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# pragma once
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#endif
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//
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// bind/detail/result_traits.hpp
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//
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// boost/bind.hpp support header, return type deduction
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//
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// Copyright 2006, 2020 Peter Dimov
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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_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt
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//
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// See http://www.boost.org/libs/bind/bind.html for documentation.
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//
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#if defined(_MSVC_LANG) && _MSVC_LANG >= 17
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#include <functional>
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#endif
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namespace boost
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{
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namespace _bi
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{
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template<class R, class F> struct result_traits
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{
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typedef R type;
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};
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struct unspecified {};
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template<class F> struct result_traits<unspecified, F>
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{
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typedef typename F::result_type type;
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};
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template<class F> struct result_traits< unspecified, reference_wrapper<F> >
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{
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typedef typename F::result_type type;
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};
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#if defined(_MSVC_LANG) && _MSVC_LANG >= 17
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template<class T> struct result_traits< unspecified, std::plus<T> >
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{
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typedef T type;
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};
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template<class T> struct result_traits< unspecified, std::minus<T> >
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{
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typedef T type;
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};
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template<class T> struct result_traits< unspecified, std::multiplies<T> >
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{
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typedef T type;
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};
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template<class T> struct result_traits< unspecified, std::divides<T> >
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{
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typedef T type;
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};
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template<class T> struct result_traits< unspecified, std::modulus<T> >
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{
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typedef T type;
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};
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template<class T> struct result_traits< unspecified, std::negate<T> >
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{
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typedef T type;
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};
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template<class T> struct result_traits< unspecified, std::equal_to<T> >
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{
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typedef bool type;
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};
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template<class T> struct result_traits< unspecified, std::not_equal_to<T> >
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{
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typedef bool type;
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};
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template<class T> struct result_traits< unspecified, std::greater<T> >
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{
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typedef bool type;
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};
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template<class T> struct result_traits< unspecified, std::less<T> >
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{
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typedef bool type;
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};
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template<class T> struct result_traits< unspecified, std::greater_equal<T> >
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{
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typedef bool type;
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};
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template<class T> struct result_traits< unspecified, std::less_equal<T> >
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{
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typedef bool type;
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};
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template<class T> struct result_traits< unspecified, std::logical_and<T> >
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{
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typedef bool type;
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};
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template<class T> struct result_traits< unspecified, std::logical_or<T> >
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{
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typedef bool type;
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};
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template<class T> struct result_traits< unspecified, std::logical_not<T> >
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{
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typedef bool type;
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};
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template<class T> struct result_traits< unspecified, std::bit_and<T> >
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{
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typedef T type;
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};
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template<class T> struct result_traits< unspecified, std::bit_or<T> >
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{
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typedef T type;
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};
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template<class T> struct result_traits< unspecified, std::bit_xor<T> >
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{
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typedef T type;
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};
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template<class T> struct result_traits< unspecified, std::bit_not<T> >
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{
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typedef T type;
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};
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#endif
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} // namespace _bi
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} // namespace boost
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#endif // #ifndef BOOST_BIND_DETAIL_RESULT_TRAITS_HPP_INCLUDED
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