Alexandria  2.16
Please provide a description of the project.
 All Classes Namespaces Files Functions Variables Typedefs Enumerations Enumerator Friends Macros Groups Pages
InstOrRefHolder.h
Go to the documentation of this file.
1 /*
2  * Copyright (C) 2012-2020 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 
29 namespace Euclid {
30 
31 template <typename InterfaceType>
33 
34 public:
35 
36  template <typename InstanceType=InterfaceType, typename... Args>
38 
40 
41  virtual ~InstOrRefHolder() = default;
42 
43  virtual InterfaceType& ref() = 0;
44 
45 };
46 
47 } // end of namespace Euclid
48 
50 
51 #endif /* _ALEXANDRIAKERNEL_INSTANCEORREFERENCEHOLDER_H */
52 
virtual ~InstOrRefHolder()=default
STL class.
static std::unique_ptr< InstOrRefHolder< InterfaceType > > create(Args...args)
virtual InterfaceType & ref()=0