1 // Copyright (c) 1999, Google Inc. 2 // All rights reserved. 3 // 4 // Redistribution and use in source and binary forms, with or without 5 // modification, are permitted provided that the following conditions are 6 // met: 7 // 8 // * Redistributions of source code must retain the above copyright 9 // notice, this list of conditions and the following disclaimer. 10 // * Redistributions in binary form must reproduce the above 11 // copyright notice, this list of conditions and the following disclaimer 12 // in the documentation and/or other materials provided with the 13 // distribution. 14 // * Neither the name of Google Inc. nor the names of its 15 // contributors may be used to endorse or promote products derived from 16 // this software without specific prior written permission. 17 // 18 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 30 // --- 31 // 32 // Revamped and reorganized by Craig Silverstein 33 // 34 // This is the file that should be included by any file which declares 35 // command line flag. 36 37 #ifndef GFLAGS_DECLARE_H_ 38 #define GFLAGS_DECLARE_H_ 39 40 41 // --------------------------------------------------------------------------- 42 // Namespace of gflags library symbols. 43 #define GFLAGS_NAMESPACE google 44 45 // --------------------------------------------------------------------------- 46 // Windows DLL import/export. 47 48 // We always want to import the symbols of the gflags library 49 #ifndef GFLAGS_DLL_DECL 50 # if 0 && defined(_MSC_VER) 51 # define GFLAGS_DLL_DECL __declspec(dllimport) 52 # else 53 # define GFLAGS_DLL_DECL 54 # endif 55 #endif 56 57 // We always want to import variables declared in user code 58 #ifndef GFLAGS_DLL_DECLARE_FLAG 59 # ifdef _MSC_VER 60 # define GFLAGS_DLL_DECLARE_FLAG __declspec(dllimport) 61 # else 62 # define GFLAGS_DLL_DECLARE_FLAG 63 # endif 64 #endif 65 66 // --------------------------------------------------------------------------- 67 // Flag types 68 #include <string> 69 #if 1 70 # include <stdint.h> // the normal place uint32_t is defined 71 #elif 1 72 # include <sys/types.h> // the normal place u_int32_t is defined 73 #elif 0 74 # include <inttypes.h> // a third place for uint32_t or u_int32_t 75 #endif 76 77 namespace GFLAGS_NAMESPACE { 78 79 #if 0 // C99 80 typedef int32_t int32; 81 typedef uint32_t uint32; 82 typedef int64_t int64; 83 typedef uint64_t uint64; 84 #elif 0 // BSD 85 typedef int32_t int32; 86 typedef u_int32_t uint32; 87 typedef int64_t int64; 88 typedef u_int64_t uint64; 89 #elif 1 // Windows 90 typedef __int32 int32; 91 typedef unsigned __int32 uint32; 92 typedef __int64 int64; 93 typedef unsigned __int64 uint64; 94 #else 95 # error Do not know how to define a 32-bit integer quantity on your system 96 #endif 97 98 } // namespace GFLAGS_NAMESPACE 99 100 101 namespace fLS { 102 103 // The meaning of "string" might be different between now and when the 104 // macros below get invoked (e.g., if someone is experimenting with 105 // other string implementations that get defined after this file is 106 // included). Save the current meaning now and use it in the macros. 107 typedef std::string clstring; 108 109 } // namespace fLS 110 111 112 #define DECLARE_VARIABLE(type, shorttype, name) \ 113 /* We always want to import declared variables, dll or no */ \ 114 namespace fL##shorttype { extern GFLAGS_DLL_DECLARE_FLAG type FLAGS_##name; } \ 115 using fL##shorttype::FLAGS_##name 116 117 #define DECLARE_bool(name) \ 118 DECLARE_VARIABLE(bool, B, name) 119 120 #define DECLARE_int32(name) \ 121 DECLARE_VARIABLE(::GFLAGS_NAMESPACE::int32, I, name) 122 123 #define DECLARE_int64(name) \ 124 DECLARE_VARIABLE(::GFLAGS_NAMESPACE::int64, I64, name) 125 126 #define DECLARE_uint64(name) \ 127 DECLARE_VARIABLE(::GFLAGS_NAMESPACE::uint64, U64, name) 128 129 #define DECLARE_double(name) \ 130 DECLARE_VARIABLE(double, D, name) 131 132 #define DECLARE_string(name) \ 133 /* We always want to import declared variables, dll or no */ \ 134 namespace fLS { \ 135 using ::fLS::clstring; \ 136 extern GFLAGS_DLL_DECLARE_FLAG ::fLS::clstring& FLAGS_##name; \ 137 } \ 138 using fLS::FLAGS_##name 139 140 141 #endif // GFLAGS_DECLARE_H_ 142