A Discrete-Event Network Simulator
API
unused.h
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1 /*
2  * Copyright (c) 2012 Andrey Mazo
3  *
4  * This program is free software; you can redistribute it and/or modify
5  * it under the terms of the GNU General Public License version 2 as
6  * published by the Free Software Foundation;
7  *
8  * This program is distributed in the hope that it will be useful,
9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11  * GNU General Public License for more details.
12  *
13  * You should have received a copy of the GNU General Public License
14  * along with this program; if not, write to the Free Software
15  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
16  *
17  * Author: Andrey Mazo <ahippo@yandex.com>
18  */
19 
20 #ifndef UNUSED_H
21 #define UNUSED_H
22 
23 #include "ns3/deprecated.h"
24 
40 // We can't use NS_DEPRECATED_3_36 here because NS_UNUSED
41 // is used as a statement following a declaration:
42 // int x;
43 // NS_UNUSED (x);
44 // NS_DEPRECATED needs to be applied to the declaration
45 // NS_DEPRECATED_3_36 ("use double instead") int x;
46 // Instead we resort to a pragma
47 
48 #ifndef NS_UNUSED
49 #define NS_UNUSED(x) \
50  _Pragma("GCC warning \"NS_UNUSED is deprecated, use [[maybe_unused]] directly\"")((void)(x))
51 #endif
52 
61 #ifndef NS_UNUSED_GLOBAL
62 #if defined(__GNUC__)
63 #define NS_UNUSED_GLOBAL(x) \
64  NS_DEPRECATED_3_36("NS_UNUSED_GLOBAL is deprecated, use [[maybe_unused]] directly") \
65  [[maybe_unused]] x
66 #elif defined(__LCLINT__)
67 #define NS_UNUSED_GLOBAL(x) \
68  NS_DEPRECATED_3_36("NS_UNUSED_GLOBAL is deprecated, use [[maybe_unused]] directly") \
69  /*@unused@*/ x
70 #else
71 #define NS_UNUSED_GLOBAL(x) \
72  NS_DEPRECATED_3_36("NS_UNUSED_GLOBAL is deprecated, use [[maybe_unused]] directly") \
73  x
74 #endif
75 #endif
76 
77 #endif /* UNUSED_H */