aboutsummaryrefslogtreecommitdiffstats
path: root/contrib/libs/re2/util/util.h
blob: cfc30316bccf07820d4b3dbe94fe5ef8f7d6a33c (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
// Copyright 2009 The RE2 Authors.  All Rights Reserved. 
// Use of this source code is governed by a BSD-style 
// license that can be found in the LICENSE file. 
 
#ifndef UTIL_UTIL_H_ 
#define UTIL_UTIL_H_ 
 
#define arraysize(array) (sizeof(array)/sizeof((array)[0]))
 
#ifndef ATTRIBUTE_NORETURN
#if defined(__GNUC__)
#define ATTRIBUTE_NORETURN __attribute__((noreturn))
#elif defined(_MSC_VER)
#define ATTRIBUTE_NORETURN __declspec(noreturn)
#else
#define ATTRIBUTE_NORETURN
#endif
#endif
 
#ifndef ATTRIBUTE_UNUSED
#if defined(__GNUC__)
#define ATTRIBUTE_UNUSED __attribute__((unused))
#else
#define ATTRIBUTE_UNUSED
#endif
#endif

#ifndef FALLTHROUGH_INTENDED 
#if defined(__clang__)
#define FALLTHROUGH_INTENDED [[clang::fallthrough]]
#elif defined(__GNUC__) && __GNUC__ >= 7
#define FALLTHROUGH_INTENDED [[gnu::fallthrough]]
#else
#define FALLTHROUGH_INTENDED do {} while (0)
#endif 
#endif
 
#ifndef NO_THREAD_SAFETY_ANALYSIS 
#define NO_THREAD_SAFETY_ANALYSIS 
#endif 
 
#endif  // UTIL_UTIL_H_