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 1 && 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 1
74# include <inttypes.h> // a third place for uint32_t or u_int32_t
75#endif
76
77namespace GFLAGS_NAMESPACE {
78
79#if 1 // C99
80typedef int32_t int32;
81typedef uint32_t uint32;
82typedef int64_t int64;
83typedef uint64_t uint64;
84#elif 0 // BSD
85typedef int32_t int32;
86typedef u_int32_t uint32;
87typedef int64_t int64;
88typedef u_int64_t uint64;
89#elif 0 // Windows
90typedef __int32 int32;
91typedef unsigned __int32 uint32;
92typedef __int64 int64;
93typedef 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
101namespace 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.
107typedef 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