forked from boostorg/optional
cacde054df
Implement constexpr definitions of forward and move to replace usage of boost::move and boost::forward from the Boost.Move library. Alter tests to use std::move instead of boost::move. Remove the dependency on Boost.Move from build.jam
39 lines
1.2 KiB
C++
39 lines
1.2 KiB
C++
// Copyright (C) 2024 Andrzej Krzemienski.
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//
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// Use, modification, and distribution is subject to the Boost Software
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// License, Version 1.0. (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/optional for documentation.
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//
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// You are welcome to contact the author at:
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// akrzemi1@gmail.com
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#ifndef BOOST_OPTIONAL_OPTIONAL_DETAIL_OPTIONAL_UTILITY_HPP
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#define BOOST_OPTIONAL_OPTIONAL_DETAIL_OPTIONAL_UTILITY_HPP
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namespace boost {
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namespace optional_detail {
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// Workaround: forward and move aren't constexpr in C++11
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template <class T> inline constexpr T&& forward(typename boost::remove_reference<T>::type& t) noexcept
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{
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return static_cast<T&&>(t);
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}
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template <class T> inline constexpr T&& forward(typename boost::remove_reference<T>::type&& t) noexcept
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{
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BOOST_STATIC_ASSERT_MSG(!boost::is_lvalue_reference<T>::value, "Can not forward an rvalue as an lvalue.");
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return static_cast<T&&>(t);
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}
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template <class T> inline constexpr typename boost::remove_reference<T>::type&& move(T&& t) noexcept
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{
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return static_cast<typename boost::remove_reference<T>::type&&>(t);
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}
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} // namespace optional_detail
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} // namespace boost
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#endif
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