forked from qt-creator/qt-creator
f6943a712a
Many issues, mostly in headers, were not addressed in
e38410b76c
modernize-use-auto
modernize-use-nullptr
modernize-use-override
modernize-use-using
modernize-use-default-member-init
modernize-use-equals-default
Change-Id: I320a51726db881e582b898948d53735ebb06887a
Reviewed-by: hjk <hjk@qt.io>
55 lines
1.6 KiB
C++
55 lines
1.6 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2016 The Qt Company Ltd.
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** Contact: https://www.qt.io/licensing/
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**
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** This file is part of Qt Creator.
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**
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see https://www.qt.io/terms-conditions. For further
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** information use the contact form at https://www.qt.io/contact-us.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3 as published by the Free Software
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** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
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** included in the packaging of this file. Please review the following
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** information to ensure the GNU General Public License requirements will
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** be met: https://www.gnu.org/licenses/gpl-3.0.html.
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**
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****************************************************************************/
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#pragma once
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#include <utility>
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namespace Utils {
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/// RAII object to save a value, and restore it when the scope is left.
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template<typename T>
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class ScopedSwap
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{
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T oldValue;
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T &ref;
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public:
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ScopedSwap(T &var, T newValue)
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: oldValue(newValue)
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, ref(var)
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{
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std::swap(ref, oldValue);
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}
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~ScopedSwap()
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{
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std::swap(ref, oldValue);
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}
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};
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using ScopedBoolSwap = ScopedSwap<bool>;
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} // Utils namespace
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