Sayonara Player
Singleton.h
1 /* singleton.h */
2 
3 /* Copyright (C) 2011-2020 Michael Lugmair (Lucio Carreras)
4  *
5  * This file is part of sayonara player
6  *
7  * This program is free software: you can redistribute it and/or modify
8  * it under the terms of the GNU General Public License as published by
9  * the Free Software Foundation, either version 3 of the License, or
10  * (at your option) any later version.
11 
12  * This program is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15  * GNU General Public License for more details.
16 
17  * You should have received a copy of the GNU General Public License
18  * along with this program. If not, see <http://www.gnu.org/licenses/>.
19  */
20 
21 #pragma once
22 #ifndef SAYONARA_SINGLETON_H
23 #define SAYONARA_SINGLETON_H
24 
25 #define _SINGLETON_BASIC_(class_name) friend class Application; \
26  protected: \
27  class_name( const class_name& other ) = delete; \
28  class_name& operator=(const class_name& other) = delete; \
29  class_name( const class_name&& other ) = delete; \
30  class_name& operator=(const class_name&& other) = delete; \
31  public: \
32  static class_name *instance() \
33  { static class_name instance; return &instance; } \
34  virtual ~class_name ();
35 
36 #define SINGLETON(class_name) _SINGLETON_BASIC_(class_name) \
37  protected: \
38  class_name(); \
39  private:
40 
41 #define SINGLETON_QOBJECT(class_name) _SINGLETON_BASIC_(class_name) \
42  protected: \
43  class_name(QObject* parent=nullptr); \
44  private:
45 
46 
47 #endif // SAYONARA_SINGLETON_H