mirror of
https://github.com/Atmosphere-NX/Atmosphere
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40 lines
1.3 KiB
C++
40 lines
1.3 KiB
C++
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/*
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* Copyright (c) 2018-2020 Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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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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#pragma once
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#include <vapours/common.hpp>
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#include <vapours/assert.hpp>
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namespace ams::util {
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template<typename T, typename U> requires (std::is_assignable<T&, U&&>::value && std::is_copy_constructible<T>::value && std::is_move_constructible<T>::value)
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constexpr inline T Exchange(T *ptr, U value) {
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AMS_ASSERT(ptr != nullptr);
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auto ret = std::move(*ptr);
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*ptr = std::move(value);
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return ret;
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}
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template<typename T>
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constexpr inline T *Exchange(T **ptr, std::nullptr_t) {
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AMS_ASSERT(ptr != nullptr);
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auto ret(*ptr);
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*ptr = nullptr;
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return ret;
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}
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}
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