1 /***************************************************************************
2  *   Copyright (C) 2008-2021 by Andrzej Rybczak                            *
3  *   andrzej@rybczak.net                                                   *
4  *                                                                         *
5  *   This program is free software; you can redistribute it and/or modify  *
6  *   it under the terms of the GNU General Public License as published by  *
7  *   the Free Software Foundation; either version 2 of the License, or     *
8  *   (at your option) any later version.                                   *
9  *                                                                         *
10  *   This program is distributed in the hope that it will be useful,       *
11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
13  *   GNU General Public License for more details.                          *
14  *                                                                         *
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17  *   Free Software Foundation, Inc.,                                       *
18  *   51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.              *
19  ***************************************************************************/
20 
21 #ifndef NCMPCPP_UTILITY_SCOPED_VALUE_H
22 #define NCMPCPP_UTILITY_SCOPED_VALUE_H
23 
24 template <typename ValueT>
25 struct ScopedValue
26 {
ScopedValueScopedValue27 	ScopedValue(ValueT &ref, ValueT &&new_value)
28 		: m_ref(ref)
29 	{
30 		m_value = ref;
31 		m_ref = std::forward<ValueT>(new_value);
32 	}
33 
~ScopedValueScopedValue34 	~ScopedValue()
35 	{
36 		m_ref = std::move(m_value);
37 	}
38 
39 private:
40 	ValueT &m_ref;
41 	ValueT m_value;
42 };
43 
44 #endif // NCMPCPP_UTILITY_SCOPED_VALUE_H
45