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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt Creator.
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
****************************************************************************/
#pragma once
#include <utility>
namespace Utils {
/// RAII object to save a value, and restore it when the scope is left.
template<typename T>
class ScopedSwap
{
T oldValue;
T &ref;
public:
ScopedSwap(T &var, T newValue)
: oldValue(newValue)
, ref(var)
{
std::swap(ref, oldValue);
}
~ScopedSwap()
{
std::swap(ref, oldValue);
}
};
using ScopedBoolSwap = ScopedSwap<bool>;
} // Utils namespace
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