Alexandria 2.31.0
SDC-CH common library for the Euclid project
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InstOrRefHolder.h
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1/*
2 * Copyright (C) 2012-2022 Euclid Science Ground Segment
3 *
4 * This library is free software; you can redistribute it and/or modify it under
5 * the terms of the GNU Lesser General Public License as published by the Free
6 * Software Foundation; either version 3.0 of the License, or (at your option)
7 * any later version.
8 *
9 * This library is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
11 * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
12 * details.
13 *
14 * You should have received a copy of the GNU Lesser General Public License
15 * along with this library; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17 */
18
19/*
20 * @file InstanceOrReferenceHolder.h
21 * @author nikoapos
22 */
23
24#ifndef _ALEXANDRIAKERNEL_INSTANCEORREFERENCEHOLDER_H
25#define _ALEXANDRIAKERNEL_INSTANCEORREFERENCEHOLDER_H
26
27#include <memory>
28
29namespace Euclid {
30
37template <typename InterfaceType>
39
40public:
41 template <typename InstanceType = InterfaceType, typename... Args>
43
45
46 virtual ~InstOrRefHolder() = default;
47
48 virtual InterfaceType& ref() = 0;
49};
50
51} // end of namespace Euclid
52
54
55#endif /* _ALEXANDRIAKERNEL_INSTANCEORREFERENCEHOLDER_H */
static std::unique_ptr< InstOrRefHolder< InterfaceType > > create(Args &&... args)
virtual ~InstOrRefHolder()=default
static std::unique_ptr< InstOrRefHolder< InterfaceType > > create(InterfaceType &ref)
virtual InterfaceType & ref()=0