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1 /* System-dependent definitions for Bison.
2
3 Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007 Free
4 Software Foundation, Inc.
5
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
9 any later version.
10
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software Foundation,
18 Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
19
20 #ifndef BISON_SYSTEM_H
21 #define BISON_SYSTEM_H
22
23 /* flex 2.5.31 gratutiously defines macros like INT8_MIN. But this
24 runs afoul of pre-C99 compilers that have <inttypes.h> or
25 <stdint.h>, which are included below if available. It also runs
26 afoul of pre-C99 compilers that define these macros in <limits.h>. */
27 #if ! defined __STDC_VERSION__ || __STDC_VERSION__ < 199901
28 # undef INT8_MIN
29 # undef INT16_MIN
30 # undef INT32_MIN
31 # undef INT8_MAX
32 # undef INT16_MAX
33 # undef UINT8_MAX
34 # undef INT32_MAX
35 # undef UINT16_MAX
36 # undef UINT32_MAX
37 #endif
38
39 #include <limits.h>
40 #include <stddef.h>
41 #include <stdlib.h>
42 #include <string.h>
43
44 #if HAVE_SYS_TYPES_H
45 # include <sys/types.h>
46 #endif
47
48 #include <unistd.h>
49 #include <inttypes.h>
50
51 #ifndef UINTPTR_MAX
52 /* This isn't perfect, but it's good enough for Bison, which needs
53 only to hash pointers. */
54 typedef size_t uintptr_t;
55 #endif
56
57
58 /*---------.
59 | Gnulib. |
60 `---------*/
61
62 #include <unlocked-io.h>
63 #include <verify.h>
64 #include <xalloc.h>
65
66
67 /*-----------------.
68 | GCC extensions. |
69 `-----------------*/
70
71 /* Use this to suppress gcc's `...may be used before initialized'
72 warnings. */
73 #ifdef lint
74 # define IF_LINT(Code) Code
75 #else
76 # define IF_LINT(Code) /* empty */
77 #endif
78
79 #ifndef __attribute__
80 /* This feature is available in gcc versions 2.5 and later. */
81 # if (! defined __GNUC__ || __GNUC__ < 2 \
82 || (__GNUC__ == 2 && __GNUC_MINOR__ < 5) || __STRICT_ANSI__)
83 # define __attribute__(Spec) /* empty */
84 # endif
85 #endif
86
87 /* The __-protected variants of `format' and `printf' attributes
88 are accepted by gcc versions 2.6.4 (effectively 2.7) and later. */
89 #if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7)
90 # define __format__ format
91 # define __printf__ printf
92 #endif
93
94 #ifndef ATTRIBUTE_NORETURN
95 # define ATTRIBUTE_NORETURN __attribute__ ((__noreturn__))
96 #endif
97
98 #ifndef ATTRIBUTE_UNUSED
99 # define ATTRIBUTE_UNUSED __attribute__ ((__unused__))
100 #endif
101
102 #define FUNCTION_PRINT() fprintf (stderr, "%s: ", __func__)
103
104 /*------.
105 | NLS. |
106 `------*/
107
108 #include <locale.h>
109
110 #include <gettext.h>
111 #define _(Msgid) gettext (Msgid)
112 #define N_(Msgid) (Msgid)
113
114
115 /*-----------.
116 | Booleans. |
117 `-----------*/
118
119 #include <stdbool.h>
120
121
122
123 /*-------------.
124 | Assertions. |
125 `-------------*/
126
127 /* <assert.h>'s assertions are too heavyweight, and can be disabled
128 too easily, so use aver rather than assert. */
129 static inline void
130 aver (bool assertion)
131 {
132 if (! assertion)
133 abort ();
134 }
135
136
137 /*-----------.
138 | Obstacks. |
139 `-----------*/
140
141 #define obstack_chunk_alloc xmalloc
142 #define obstack_chunk_free free
143 #include <obstack.h>
144
145 #define obstack_sgrow(Obs, Str) \
146 obstack_grow (Obs, Str, strlen (Str))
147
148 #define obstack_fgrow1(Obs, Format, Arg1) \
149 do { \
150 char buf[4096]; \
151 sprintf (buf, Format, Arg1); \
152 obstack_grow (Obs, buf, strlen (buf)); \
153 } while (0)
154
155 #define obstack_fgrow2(Obs, Format, Arg1, Arg2) \
156 do { \
157 char buf[4096]; \
158 sprintf (buf, Format, Arg1, Arg2); \
159 obstack_grow (Obs, buf, strlen (buf)); \
160 } while (0)
161
162 #define obstack_fgrow3(Obs, Format, Arg1, Arg2, Arg3) \
163 do { \
164 char buf[4096]; \
165 sprintf (buf, Format, Arg1, Arg2, Arg3); \
166 obstack_grow (Obs, buf, strlen (buf)); \
167 } while (0)
168
169 #define obstack_fgrow4(Obs, Format, Arg1, Arg2, Arg3, Arg4) \
170 do { \
171 char buf[4096]; \
172 sprintf (buf, Format, Arg1, Arg2, Arg3, Arg4); \
173 obstack_grow (Obs, buf, strlen (buf)); \
174 } while (0)
175
176
177
178 /*-----------------------------------------.
179 | Extensions to use for the output files. |
180 `-----------------------------------------*/
181
182 #ifndef OUTPUT_EXT
183 # define OUTPUT_EXT ".output"
184 #endif
185
186 #ifndef TAB_EXT
187 # define TAB_EXT ".tab"
188 #endif
189
190 #ifndef DEFAULT_TMPDIR
191 # define DEFAULT_TMPDIR "/tmp"
192 #endif
193
194
195
196 /*---------------------.
197 | Free a linked list. |
198 `---------------------*/
199
200 #define LIST_FREE(Type, List) \
201 do { \
202 Type *_node, *_next; \
203 for (_node = List; _node; _node = _next) \
204 { \
205 _next = _node->next; \
206 free (_node); \
207 } \
208 } while (0)
209
210
211 /*---------------------------------------------.
212 | Debugging memory allocation (must be last). |
213 `---------------------------------------------*/
214
215 # if WITH_DMALLOC
216 # define DMALLOC_FUNC_CHECK
217 # include <dmalloc.h>
218 # endif /* WITH_DMALLOC */
219
220 #endif /* ! BISON_SYSTEM_H */