third_party/re2/util/util.h

   1 // Copyright 2009 The RE2 Authors.  All Rights Reserved.
   2 // Use of this source code is governed by a BSD-style
   3 // license that can be found in the LICENSE file.
   4
   5 #ifndef RE2_UTIL_UTIL_H__
   6 #define RE2_UTIL_UTIL_H__
   7
   8 // C
   9 #include <stdio.h>
  10 #include <string.h>
  11 #include <stdint.h>
  12 #include <stddef.h>         // For size_t
  13 #include <assert.h>
  14 #include <stdarg.h>
  15 #ifndef WIN32
  16 #include <sys/time.h>
  17 #endif
  18 #include <time.h>
  19 #include <ctype.h>      // For isdigit, isalpha.
  20
  21 // C++
  22 #include <vector>
  23 #include <string>
  24 #include <algorithm>
  25 #include <iosfwd>
  26 #include <map>
  27 #include <stack>
  28 #include <ostream>
  29 #include <utility>
  30 #include <set>
  31
  32 #include "build/build_config.h"
  33 #include "base/third_party/dynamic_annotations/dynamic_annotations.h"
  34
  35 // Use std names.
  36 using std::set;
  37 using std::pair;
  38 using std::vector;
  39 using std::string;
  40 using std::min;
  41 using std::max;
  42 using std::ostream;
  43 using std::map;
  44 using std::stack;
  45 using std::sort;
  46 using std::swap;
  47 using std::make_pair;
  48
  49 #if defined(__GNUC__) && !defined(USE_CXX0X) && !defined(OS_ANDROID) && \
  50     !defined(_LIBCPP_ABI_VERSION)
  51
  52 #include <tr1/unordered_set>
  53 using std::tr1::unordered_set;
  54
  55 #else
  56
  57 #include <unordered_set>
  58 #if defined(WIN32) || defined(OS_ANDROID)
  59 using std::tr1::unordered_set;
  60 #else
  61 using std::unordered_set;
  62 #endif
  63
  64 #endif
  65
  66 namespace re2 {
  67
  68 typedef int8_t int8;
  69 typedef uint8_t uint8;
  70 typedef int16_t int16;
  71 typedef uint16_t uint16;
  72 typedef int32_t int32;
  73 typedef uint32_t uint32;
  74 typedef int64_t int64;
  75 typedef uint64_t uint64;
  76
  77 typedef unsigned long ulong;
  78 typedef unsigned int uint;
  79 typedef unsigned short ushort;
  80
  81 // COMPILE_ASSERT causes a compile error about msg if expr is not true.
  82 #if __cplusplus >= 201103L
  83 #define COMPILE_ASSERT(expr, msg) static_assert(expr, #msg)
  84 #else
  85 template<bool> struct CompileAssert {};
  86 #define COMPILE_ASSERT(expr, msg) \
  87   typedef CompileAssert<(bool(expr))> msg[bool(expr) ? 1 : -1]
  88 #endif
  89
  90 // DISALLOW_EVIL_CONSTRUCTORS disallows the copy and operator= functions.
  91 // It goes in the private: declarations in a class.
  92 #define DISALLOW_EVIL_CONSTRUCTORS(TypeName) \
  93   TypeName(const TypeName&);                 \
  94   void operator=(const TypeName&)
  95
  96 #define arraysize(array) (sizeof(array)/sizeof((array)[0]))
  97
  98 // Fake lock annotations.  For real ones, see
  99 // http://code.google.com/p/data-race-test/
 100 #ifndef ANNOTATE_PUBLISH_MEMORY_RANGE
 101 #define ANNOTATE_PUBLISH_MEMORY_RANGE(a, b)
 102 #define ANNOTATE_IGNORE_WRITES_BEGIN()
 103 #define ANNOTATE_IGNORE_WRITES_END()
 104 #define ANNOTATE_BENIGN_RACE(a, b)
 105 #define NO_THREAD_SAFETY_ANALYSIS
 106 #define ANNOTATE_HAPPENS_BEFORE(x)
 107 #define ANNOTATE_HAPPENS_AFTER(x)
 108 #define ANNOTATE_UNPROTECTED_READ(x) (x)
 109 #endif
 110
 111 class StringPiece;
 112
 113 string CEscape(const StringPiece& src);
 114 int CEscapeString(const char* src, int src_len, char* dest, int dest_len);
 115
 116 extern string StringPrintf(const char* format, ...);
 117 extern void SStringPrintf(string* dst, const char* format, ...);
 118 extern void StringAppendF(string* dst, const char* format, ...);
 119 extern string PrefixSuccessor(const StringPiece& prefix);
 120
 121 uint32 hashword(const uint32*, size_t, uint32);
 122 void hashword2(const uint32*, size_t, uint32*, uint32*);
 123
 124 static inline uint32 Hash32StringWithSeed(const char* s, int len, uint32 seed) {
 125   return hashword((uint32*)s, len/4, seed);
 126 }
 127
 128 static inline uint64 Hash64StringWithSeed(const char* s, int len, uint32 seed) {
 129   uint32 x, y;
 130   x = seed;
 131   y = 0;
 132   hashword2((uint32*)s, len/4, &x, &y);
 133   return ((uint64)x << 32) | y;
 134 }
 135
 136 inline bool RunningOnValgrindOrMemorySanitizer() {
 137 #if defined(MEMORY_SANITIZER)
 138   return true;
 139 #else
 140   return RunningOnValgrind();
 141 #endif
 142 }
 143
 144 }  // namespace re2
 145
 146 #include "util/arena.h"
 147 #include "util/logging.h"
 148 #include "util/mutex.h"
 149 #include "util/utf.h"
 150
 151 #endif // RE2_UTIL_UTIL_H__