third_party/re2/util/flags.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 // Simplified version of Google's command line flags.
   6 // Does not support parsing the command line.
   7 // If you want to do that, see
   8 // http://code.google.com/p/google-gflags
   9
  10 #ifndef RE2_UTIL_FLAGS_H__
  11 #define RE2_UTIL_FLAGS_H__
  12
  13 #define DEFINE_flag(type, name, deflt, desc) \
  14         namespace re2 { type FLAGS_##name = deflt; }
  15
  16 #define DECLARE_flag(type, name) \
  17         namespace re2 { extern type FLAGS_##name; }
  18
  19 #define DEFINE_bool(name, deflt, desc) DEFINE_flag(bool, name, deflt, desc)
  20 #define DEFINE_int32(name, deflt, desc) DEFINE_flag(int32, name, deflt, desc)
  21 #define DEFINE_string(name, deflt, desc) DEFINE_flag(string, name, deflt, desc)
  22
  23 #define DECLARE_bool(name) DECLARE_flag(bool, name)
  24 #define DECLARE_int32(name) DECLARE_flag(int32, name)
  25 #define DECLARE_string(name) DECLARE_flag(string, name)
  26
  27 #endif  // RE2_UTIL_FLAGS_H__