src/system.h

   1 /* system-dependent definitions for Bison.
   2    Copyright (C) 2000, 2001, 2002 Free Software Foundation, Inc.
   3
   4    This program is free software; you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published by
   6    the Free Software Foundation; either version 2, or (at your option)
   7    any later version.
   8
   9    This program is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License
  15    along with this program; if not, write to the Free Software Foundation,
  16    Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  17
  18 #ifndef BISON_SYSTEM_H
  19 #define BISON_SYSTEM_H
  20
  21 #ifdef HAVE_CONFIG_H
  22 # include <config.h>
  23 #endif
  24
  25 /* AIX requires this to be the first thing in the file.  */
  26 #ifdef __GNUC__
  27 # define alloca(Size) __builtin_alloca (Size)
  28 #else
  29 # if HAVE_ALLOCA_H
  30 #  include <alloca.h>
  31 # else
  32 #  ifdef _AIX
  33  #pragma alloca
  34 #  else
  35 #   ifndef alloca /* predefined by HP cc +Olibcalls */
  36 char *alloca ();
  37 #   endif
  38 #  endif
  39 # endif
  40 #endif
  41
  42 #include <stdio.h>
  43
  44 #include <assert.h>
  45
  46 #if HAVE_STDLIB_H
  47 # include <stdlib.h>
  48 #endif
  49
  50 /* The following test is to work around the gross typo in
  51    systems like Sony NEWS-OS Release 4.0C, whereby EXIT_FAILURE
  52    is defined to 0, not 1.  */
  53 #if !EXIT_FAILURE
  54 # undef EXIT_FAILURE
  55 # define EXIT_FAILURE 1
  56 #endif
  57
  58 #ifndef EXIT_SUCCESS
  59 # define EXIT_SUCCESS 0
  60 #endif
  61
  62 #if HAVE_UNISTD_H
  63 # include <unistd.h>
  64 #endif
  65
  66 #if defined(STDC_HEADERS) || defined(HAVE_STRING_H)
  67 # include <string.h>
  68 /* An ANSI string.h and pre-ANSI memory.h might conflict.  */
  69 # if !defined(STDC_HEADERS) && defined(HAVE_MEMORY_H)
  70 #  include <memory.h>
  71 # endif /* not STDC_HEADERS and HAVE_MEMORY_H */
  72 #else /* not STDC_HEADERS and not HAVE_STRING_H */
  73 # include <strings.h>
  74 /* memory.h and strings.h conflict on some systems.  */
  75 #endif /* not STDC_HEADERS and not HAVE_STRING_H */
  76
  77 #include <errno.h>
  78 #ifndef errno
  79 extern int errno;
  80 #endif
  81
  82 #ifndef PARAMS
  83 # if defined PROTOTYPES || defined __STDC__
  84 #  define PARAMS(Args) Args
  85 # else
  86 #  define PARAMS(Args) ()
  87 # endif
  88 #endif
  89
  90 #if HAVE_LIMITS_H
  91 # include <limits.h>
  92 #endif
  93 #ifndef SHRT_MIN
  94 # define SHRT_MIN (-32768)
  95 #endif
  96 #ifndef SHRT_MAX
  97 # define SHRT_MAX 32767
  98 #endif
  99
 100 # include "xalloc.h"
 101
 102 /* From xstrndup.c.  */
 103 char *xstrndup PARAMS ((const char *s, size_t n));
 104
 105
 106 /*----------------.
 107 | Using timevar.  |
 108 `----------------*/
 109
 110 #include "timevar.h"
 111 extern int time_report;
 112
 113
 114 /*---------------------.
 115 | Missing prototypes.  |
 116 `---------------------*/
 117
 118 #if !HAVE_DECL_STPCPY
 119 char *stpcpy PARAMS ((char *dest, const char *src));
 120 #endif
 121
 122 #if !HAVE_DECL_STRCHR
 123 char *strchr(const char *s, int c);
 124 #endif
 125
 126 #if !HAVE_DECL_STRSPN
 127 size_t strspn(const char *s, const char *accept);
 128 #endif
 129
 130 #if !HAVE_DECL_STRNLEN
 131 size_t strnlen PARAMS ((const char *s, size_t maxlen));
 132 #endif
 133
 134 #if !HAVE_DECL_MEMCHR
 135 void *memchr PARAMS ((const void *s, int c, size_t n));
 136 #endif
 137
 138 #if !HAVE_DECL_MEMRCHR
 139 void *memrchr PARAMS ((const void *s, int c, size_t n));
 140 #endif
 141
 142
 143
 144 /*-----------------.
 145 | GCC extensions.  |
 146 `-----------------*/
 147
 148 #ifndef __attribute__
 149 /* This feature is available in gcc versions 2.5 and later.  */
 150 # if !defined (__GNUC__) || __GNUC__ < 2 || \
 151 (__GNUC__ == 2 && __GNUC_MINOR__ < 5) || __STRICT_ANSI__
 152 #  define __attribute__(Spec) /* empty */
 153 # endif
 154 #endif
 155
 156 /* The __-protected variants of `format' and `printf' attributes
 157    are accepted by gcc versions 2.6.4 (effectively 2.7) and later.  */
 158 #if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7)
 159 # define __format__ format
 160 # define __printf__ printf
 161 #endif
 162
 163 #ifndef ATTRIBUTE_NORETURN
 164 # define ATTRIBUTE_NORETURN __attribute__ ((__noreturn__))
 165 #endif
 166
 167 #ifndef ATTRIBUTE_UNUSED
 168 # define ATTRIBUTE_UNUSED __attribute__ ((__unused__))
 169 #endif
 170
 171 /*------.
 172 | NLS.  |
 173 `------*/
 174
 175 #ifdef HAVE_LOCALE_H
 176 # include <locale.h>
 177 #endif
 178 #ifndef HAVE_SETLOCALE
 179 # define setlocale(Category, Locale)
 180 #endif
 181
 182 #include "gettext.h"
 183 #define _(Msgid)  gettext (Msgid)
 184 #define N_(Msgid) (Msgid)
 185
 186
 187 /*-------------------------------.
 188 | Fix broken compilation flags.  |
 189 `-------------------------------*/
 190
 191 #ifndef LOCALEDIR
 192 # define LOCALEDIR "/usr/local/share/locale"
 193 #endif
 194
 195
 196 /*-----------.
 197 | Booleans.  |
 198 `-----------*/
 199
 200 #ifndef TRUE
 201 # define TRUE   (1)
 202 # define FALSE  (0)
 203 #endif
 204 typedef int bool;
 205
 206
 207 /*-----------.
 208 | Obstacks.  |
 209 `-----------*/
 210
 211 # define obstack_chunk_alloc xmalloc
 212 # define obstack_chunk_free  free
 213 # include "obstack.h"
 214
 215 #define obstack_sgrow(Obs, Str) \
 216   obstack_grow (Obs, Str, strlen (Str))
 217
 218 #define obstack_fgrow1(Obs, Format, Arg1)       \
 219 do {                                            \
 220   char buf[4096];                               \
 221   sprintf (buf, Format, Arg1);                  \
 222   obstack_grow (Obs, buf, strlen (buf));        \
 223 } while (0)
 224
 225 #define obstack_fgrow2(Obs, Format, Arg1, Arg2) \
 226 do {                                            \
 227   char buf[4096];                               \
 228   sprintf (buf, Format, Arg1, Arg2);            \
 229   obstack_grow (Obs, buf, strlen (buf));        \
 230 } while (0)
 231
 232 #define obstack_fgrow3(Obs, Format, Arg1, Arg2, Arg3)   \
 233 do {                                                    \
 234   char buf[4096];                                       \
 235   sprintf (buf, Format, Arg1, Arg2, Arg3);              \
 236   obstack_grow (Obs, buf, strlen (buf));                \
 237 } while (0)
 238
 239 #define obstack_fgrow4(Obs, Format, Arg1, Arg2, Arg3, Arg4)     \
 240 do {                                                            \
 241   char buf[4096];                                               \
 242   sprintf (buf, Format, Arg1, Arg2, Arg3, Arg4);                \
 243   obstack_grow (Obs, buf, strlen (buf));                        \
 244 } while (0)
 245
 246
 247
 248 /*-----------------------------------------.
 249 | Extensions to use for the output files.  |
 250 `-----------------------------------------*/
 251
 252 #ifdef VMS
 253   /* VMS. */
 254 # define EXT_TAB        "_tab"
 255 # define EXT_OUTPUT     ".output"
 256 #else /* ! VMS */
 257 # ifdef MSDOS
 258    /* MS DOS. */
 259 #  define EXT_TAB       "_tab"
 260 #  define EXT_OUTPUT    ".out"
 261 # else /* ! MSDOS */
 262   /* Standard. */
 263 #  define EXT_TAB       ".tab"
 264 #  define EXT_OUTPUT    ".output"
 265 # endif /* ! MSDOS */
 266 #endif /* ! VMS */
 267
 268 #ifndef DEFAULT_TMPDIR
 269 # define DEFAULT_TMPDIR "/tmp"
 270 #endif
 271
 272
 273
 274 /*---------------------.
 275 | Free a linked list.  |
 276 `---------------------*/
 277
 278 #define LIST_FREE(Type, List)                   \
 279 do {                                            \
 280   Type *_node, *_next;                          \
 281   for (_node = List; _node; _node = _next)      \
 282     {                                           \
 283       _next = _node->next;                      \
 284       XFREE (_node);                            \
 285     }                                           \
 286 } while (0)
 287
 288
 289 /*---------------------------------------------.
 290 | Debugging memory allocation (must be last).  |
 291 `---------------------------------------------*/
 292
 293 # if WITH_DMALLOC
 294 #  define DMALLOC_FUNC_CHECK
 295 #  include <dmalloc.h>
 296 # endif /* WITH_DMALLOC */
 297
 298 #endif  /* ! BISON_SYSTEM_H */