65 lines
1.5 KiB
C++
65 lines
1.5 KiB
C++
/**
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This file is a part of rexy's general purpose library
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Copyright (C) 2020 rexy712
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef REXY_STEAL_HPP
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#define REXY_STEAL_HPP
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#include <utility> //forward
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#include <type_traits> //is_nothrow_constructible
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#include "rexy.hpp"
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namespace rexy{
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template<class T>
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class steal
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{
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private:
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T m_val;
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public:
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template<class U>
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constexpr steal(U&& u)
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noexcept(std::is_nothrow_constructible<T,U&&>::value):
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m_val(std::forward<U>(u)){}
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steal(const steal&) = delete;
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steal(steal&&) = delete;
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steal& operator=(const steal&) = delete;
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steal& operator=(steal&&) = delete;
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constexpr T&& value(void)noexcept{
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return std::forward<T>(m_val);
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}
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constexpr const T& value(void)const noexcept{
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return m_val;
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}
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};
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template<class T>
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steal(const T&) -> steal<const T&>;
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template<class T>
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steal(T&&) -> steal<T&&>;
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template<class T>
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steal(T) -> steal<T>;
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template<class T>
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steal(T*) -> steal<T*>;
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}
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#endif
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