src/system.h

   1 /* system-dependent definitions for Bison.
   2    Copyright 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 #include <stdio.h>
  26
  27 #include <assert.h>
  28
  29 #if HAVE_STDLIB_H
  30 # include <stdlib.h>
  31 #endif
  32
  33 /* The following test is to work around the gross typo in
  34    systems like Sony NEWS-OS Release 4.0C, whereby EXIT_FAILURE
  35    is defined to 0, not 1.  */
  36 #if !EXIT_FAILURE
  37 # undef EXIT_FAILURE
  38 # define EXIT_FAILURE 1
  39 #endif
  40
  41 #ifndef EXIT_SUCCESS
  42 # define EXIT_SUCCESS 0
  43 #endif
  44
  45 #if HAVE_UNISTD_H
  46 # include <unistd.h>
  47 #endif
  48
  49 #if defined(STDC_HEADERS) || defined(HAVE_STRING_H)
  50 # include <string.h>
  51 /* An ANSI string.h and pre-ANSI memory.h might conflict.  */
  52 # if !defined(STDC_HEADERS) && defined(HAVE_MEMORY_H)
  53 #  include <memory.h>
  54 # endif /* not STDC_HEADERS and HAVE_MEMORY_H */
  55 #else /* not STDC_HEADERS and not HAVE_STRING_H */
  56 # include <strings.h>
  57 /* memory.h and strings.h conflict on some systems.  */
  58 #endif /* not STDC_HEADERS and not HAVE_STRING_H */
  59
  60 #if defined(STDC_HEADERS) || defined(HAVE_CTYPE_H)
  61 # include <ctype.h>
  62 #endif
  63
  64 #include <errno.h>
  65 #ifndef errno
  66 extern int errno;
  67 #endif
  68
  69 /* AIX requires this to be the first thing in the file.  */
  70 #ifndef __GNUC__
  71 # if HAVE_ALLOCA_H
  72 #  include <alloca.h>
  73 # else
  74 #  ifdef _AIX
  75  #pragma alloca
  76 #  else
  77 #   ifndef alloca /* predefined by HP cc +Olibcalls */
  78 char *alloca ();
  79 #   endif
  80 #  endif
  81 # endif
  82 #endif
  83
  84 #ifndef PARAMS
  85 # if defined PROTOTYPES || defined __STDC__
  86 #  define PARAMS(Args) Args
  87 # else
  88 #  define PARAMS(Args) ()
  89 # endif
  90 #endif
  91
  92 #if HAVE_LIMITS_H
  93 # include <limits.h>
  94 #endif
  95 #ifndef SHRT_MIN
  96 # define SHRT_MIN (-32768)
  97 #endif
  98 #ifndef SHRT_MAX
  99 # define SHRT_MAX 32767
 100 #endif
 101
 102 # include "xalloc.h"
 103
 104 /* From xstrndup.c.  */
 105 char *xstrndup PARAMS ((const char *s, size_t n));
 106
 107 /*---------------------.
 108 | Missing prototypes.  |
 109 `---------------------*/
 110
 111 #if !HAVE_DECL_STPCPY
 112 char *stpcpy PARAMS ((char *dest, const char *src));
 113 #endif
 114
 115 #if !HAVE_DECL_STRCHR
 116 char *strchr(const char *s, int c);
 117 #endif
 118
 119 #if !HAVE_DECL_STRSPN
 120 size_t strspn(const char *s, const char *accept);
 121 #endif
 122
 123 #if !HAVE_DECL_STRNLEN
 124 size_t strnlen PARAMS ((const char *s, size_t maxlen));
 125 #endif
 126
 127 #if !HAVE_DECL_MEMCHR
 128 void *memchr PARAMS ((const void *s, int c, size_t n));
 129 #endif
 130
 131 #if !HAVE_DECL_MEMRCHR
 132 void *memrchr PARAMS ((const void *s, int c, size_t n));
 133 #endif
 134
 135
 136
 137 /*-----------------.
 138 | GCC extensions.  |
 139 `-----------------*/
 140
 141 #ifndef __attribute__
 142 /* This feature is available in gcc versions 2.5 and later.  */
 143 # if !defined (__GNUC__) || __GNUC__ < 2 || \
 144 (__GNUC__ == 2 && __GNUC_MINOR__ < 5) || __STRICT_ANSI__
 145 #  define __attribute__(Spec) /* empty */
 146 # endif
 147 #endif
 148
 149 /* The __-protected variants of `format' and `printf' attributes
 150    are accepted by gcc versions 2.6.4 (effectively 2.7) and later.  */
 151 #if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7)
 152 # define __format__ format
 153 # define __printf__ printf
 154 #endif
 155
 156 #ifndef ATTRIBUTE_NORETURN
 157 # define ATTRIBUTE_NORETURN __attribute__ ((__noreturn__))
 158 #endif
 159
 160 #ifndef ATTRIBUTE_UNUSED
 161 # define ATTRIBUTE_UNUSED __attribute__ ((__unused__))
 162 #endif
 163
 164 /*------.
 165 | NLS.  |
 166 `------*/
 167
 168 #ifdef HAVE_LOCALE_H
 169 # include <locale.h>
 170 #endif
 171 #ifndef HAVE_SETLOCALE
 172 # define setlocale(Category, Locale)
 173 #endif
 174
 175 #include "gettext.h"
 176 #define _(Msgid)  gettext (Msgid)
 177 #define N_(Msgid) (Msgid)
 178
 179
 180 /*-------------------------------.
 181 | Fix broken compilation flags.  |
 182 `-------------------------------*/
 183
 184 #ifndef LOCALEDIR
 185 # define LOCALEDIR "/usr/local/share/locale"
 186 #endif
 187
 188
 189 /*-----------.
 190 | Booleans.  |
 191 `-----------*/
 192
 193 #ifndef TRUE
 194 # define TRUE   (1)
 195 # define FALSE  (0)
 196 #endif
 197 typedef int bool;
 198
 199
 200 /*-----------.
 201 | Obstacks.  |
 202 `-----------*/
 203
 204 # define obstack_chunk_alloc xmalloc
 205 # define obstack_chunk_free  free
 206 # include "obstack.h"
 207
 208 #define obstack_sgrow(Obs, Str) \
 209   obstack_grow (Obs, Str, strlen (Str))
 210
 211 #define obstack_fgrow1(Obs, Format, Arg1)       \
 212 do {                                            \
 213   char buf[4096];                               \
 214   sprintf (buf, Format, Arg1);                  \
 215   obstack_grow (Obs, buf, strlen (buf));        \
 216 } while (0)
 217
 218 #define obstack_fgrow2(Obs, Format, Arg1, Arg2) \
 219 do {                                            \
 220   char buf[4096];                               \
 221   sprintf (buf, Format, Arg1, Arg2);            \
 222   obstack_grow (Obs, buf, strlen (buf));        \
 223 } while (0)
 224
 225 #define obstack_fgrow3(Obs, Format, Arg1, Arg2, Arg3)   \
 226 do {                                                    \
 227   char buf[4096];                                       \
 228   sprintf (buf, Format, Arg1, Arg2, Arg3);              \
 229   obstack_grow (Obs, buf, strlen (buf));                \
 230 } while (0)
 231
 232 #define obstack_fgrow4(Obs, Format, Arg1, Arg2, Arg3, Arg4)     \
 233 do {                                                            \
 234   char buf[4096];                                               \
 235   sprintf (buf, Format, Arg1, Arg2, Arg3, Arg4);                \
 236   obstack_grow (Obs, buf, strlen (buf));                        \
 237 } while (0)
 238
 239
 240
 241 /*-----------------------------------------.
 242 | Extensions to use for the output files.  |
 243 `-----------------------------------------*/
 244
 245 #ifdef VMS
 246   /* VMS. */
 247 # define EXT_TAB        "_tab"
 248 # define EXT_OUTPUT     ".output"
 249 #else /* ! VMS */
 250 # ifdef MSDOS
 251    /* MS DOS. */
 252 #  define EXT_TAB       "_tab"
 253 #  define EXT_OUTPUT    ".out"
 254 # else /* ! MSDOS */
 255   /* Standard. */
 256 #  define EXT_TAB       ".tab"
 257 #  define EXT_OUTPUT    ".output"
 258 # endif /* ! MSDOS */
 259 #endif /* ! VMS */
 260
 261 #ifndef DEFAULT_TMPDIR
 262 # define DEFAULT_TMPDIR "/tmp"
 263 #endif
 264
 265
 266
 267 /*---------------------.
 268 | Free a linked list.  |
 269 `---------------------*/
 270
 271 #define LIST_FREE(Type, List)                   \
 272 do {                                            \
 273   Type *_node, *_next;                          \
 274   for (_node = List; _node; _node = _next)      \
 275     {                                           \
 276       _next = _node->next;                      \
 277       XFREE (_node);                            \
 278     }                                           \
 279 } while (0)
 280
 281
 282 /*---------------------------------------------.
 283 | Debugging memory allocation (must be last).  |
 284 `---------------------------------------------*/
 285
 286 # if WITH_DMALLOC
 287 #  define DMALLOC_FUNC_CHECK
 288 #  include <dmalloc.h>
 289 # endif /* WITH_DMALLOC */
 290
 291 #endif  /* ! BISON_SYSTEM_H */