constructor_magic.h revision 4e51691e58d8d32590b03c1951cb13de4d1c4758 
1/*
2 *  Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
3 *
4 *  Use of this source code is governed by a BSD-style license
5 *  that can be found in the LICENSE file in the root of the source
6 *  tree. An additional intellectual property rights grant can be found
7 *  in the file PATENTS.  All contributing project authors may
8 *  be found in the AUTHORS file in the root of the source tree.
9 */
10
11/*
12 * WebRtc
13 * Copy from third_party/libjingle/source/talk/base/constructormagic.h
14 */
15
16#ifndef WEBRTC_SYSTEM_WRAPPERS_INTERFACE_CONSTRUCTOR_MAGIC_H_
17#define WEBRTC_SYSTEM_WRAPPERS_INTERFACE_CONSTRUCTOR_MAGIC_H_
18
19#ifndef DISALLOW_ASSIGN
20#define DISALLOW_ASSIGN(TypeName) \
21  void operator=(const TypeName&)
22#endif
23
24#ifndef DISALLOW_COPY_AND_ASSIGN
25// A macro to disallow the evil copy constructor and operator= functions
26// This should be used in the private: declarations for a class
27#define DISALLOW_COPY_AND_ASSIGN(TypeName)    \
28  TypeName(const TypeName&);                    \
29  DISALLOW_ASSIGN(TypeName)
30#endif
31
32#ifndef DISALLOW_EVIL_CONSTRUCTORS
33// Alternative, less-accurate legacy name.
34#define DISALLOW_EVIL_CONSTRUCTORS(TypeName) \
35  DISALLOW_COPY_AND_ASSIGN(TypeName)
36#endif
37
38#ifndef DISALLOW_IMPLICIT_CONSTRUCTORS
39// A macro to disallow all the implicit constructors, namely the
40// default constructor, copy constructor and operator= functions.
41//
42// This should be used in the private: declarations for a class
43// that wants to prevent anyone from instantiating it. This is
44// especially useful for classes containing only static methods.
45#define DISALLOW_IMPLICIT_CONSTRUCTORS(TypeName) \
46  TypeName();                                    \
47  DISALLOW_EVIL_CONSTRUCTORS(TypeName)
48#endif
49
50#endif  // WEBRTC_SYSTEM_WRAPPERS_INTERFACE_CONSTRUCTOR_MAGIC_H_
51