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 # include "xalloc.h"
  93
  94 /* From xstrndup.c.  */
  95 char *xstrndup PARAMS ((const char *s, size_t n));
  96
  97 /*---------------------.
  98 | Missing prototypes.  |
  99 `---------------------*/
 100
 101 #if !HAVE_DECL_STPCPY
 102 char *stpcpy PARAMS ((char *dest, const char *src));
 103 #endif
 104
 105 #if !HAVE_DECL_STRCHR
 106 char *strchr(const char *s, int c);
 107 #endif
 108
 109 #if !HAVE_DECL_STRNDUP
 110 char *strndup PARAMS ((const char *s, size_t size));
 111 #endif
 112
 113 #if !HAVE_DECL_STRSPN
 114 size_t strspn(const char *s, const char *accept);
 115 #endif
 116
 117 #if !HAVE_DECL_STRNLEN
 118 size_t strnlen PARAMS ((const char *s, size_t maxlen));
 119 #endif
 120
 121 #if !HAVE_DECL_MEMCHR
 122 void *memchr PARAMS ((const void *s, int c, size_t n));
 123 #endif
 124
 125 #if !HAVE_DECL_MEMRCHR
 126 void *memrchr PARAMS ((const void *s, int c, size_t n));
 127 #endif
 128
 129
 130
 131 /*-----------------.
 132 | GCC extensions.  |
 133 `-----------------*/
 134
 135 #ifndef __attribute__
 136 /* This feature is available in gcc versions 2.5 and later.  */
 137 # if !defined (__GNUC__) || __GNUC__ < 2 || \
 138 (__GNUC__ == 2 && __GNUC_MINOR__ < 5) || __STRICT_ANSI__
 139 #  define __attribute__(Spec) /* empty */
 140 # endif
 141 /* The __-protected variants of `format' and `printf' attributes
 142    are accepted by gcc versions 2.6.4 (effectively 2.7) and later.  */
 143 # if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7)
 144 #  define __format__ format
 145 #  define __printf__ printf
 146 # endif
 147 #endif
 148
 149
 150 /*------.
 151 | NLS.  |
 152 `------*/
 153
 154 #ifdef HAVE_LOCALE_H
 155 # include <locale.h>
 156 #endif
 157 #ifndef HAVE_SETLOCALE
 158 # define setlocale(Category, Locale)
 159 #endif
 160
 161 #include "libgettext.h"
 162 #define _(Msgid)  gettext (Msgid)
 163 #define N_(Msgid) (Msgid)
 164
 165
 166 /*-------------------------------.
 167 | Fix broken compilation flags.  |
 168 `-------------------------------*/
 169
 170 #ifndef LOCALEDIR
 171 # define LOCALEDIR "/usr/local/share/locale"
 172 #endif
 173
 174
 175 /*-----------.
 176 | Booleans.  |
 177 `-----------*/
 178
 179 #ifndef TRUE
 180 # define TRUE   (1)
 181 # define FALSE  (0)
 182 #endif
 183 typedef int bool;
 184
 185
 186 /*-----------.
 187 | Obstacks.  |
 188 `-----------*/
 189
 190 # define obstack_chunk_alloc xmalloc
 191 # define obstack_chunk_free  free
 192 # include "obstack.h"
 193
 194 #define obstack_sgrow(Obs, Str) \
 195   obstack_grow (Obs, Str, strlen (Str))
 196
 197 #define obstack_fgrow1(Obs, Format, Arg1)       \
 198 do {                                            \
 199   char buf[4096];                               \
 200   sprintf (buf, Format, Arg1);                  \
 201   obstack_grow (Obs, buf, strlen (buf));        \
 202 } while (0)
 203
 204 #define obstack_fgrow2(Obs, Format, Arg1, Arg2) \
 205 do {                                            \
 206   char buf[4096];                               \
 207   sprintf (buf, Format, Arg1, Arg2);            \
 208   obstack_grow (Obs, buf, strlen (buf));        \
 209 } while (0)
 210
 211 #define obstack_fgrow3(Obs, Format, Arg1, Arg2, Arg3)   \
 212 do {                                                    \
 213   char buf[4096];                                       \
 214   sprintf (buf, Format, Arg1, Arg2, Arg3);              \
 215   obstack_grow (Obs, buf, strlen (buf));                \
 216 } while (0)
 217
 218 #define obstack_fgrow4(Obs, Format, Arg1, Arg2, Arg3, Arg4)     \
 219 do {                                                            \
 220   char buf[4096];                                               \
 221   sprintf (buf, Format, Arg1, Arg2, Arg3, Arg4);                \
 222   obstack_grow (Obs, buf, strlen (buf));                        \
 223 } while (0)
 224
 225
 226 /*---------------------------------.
 227 | Machine-dependencies for Bison.  |
 228 `---------------------------------*/
 229
 230 #ifdef  eta10
 231 # define        MAXSHORT        2147483647
 232 # define        MINSHORT        -2147483648
 233 #else
 234 # define        MAXSHORT        32767
 235 # define        MINSHORT        -32768
 236 #endif
 237
 238 #if defined (MSDOS) && !defined (__GO32__)
 239 # define        BITS_PER_WORD   16
 240 # define MAXTABLE       16383
 241 #else
 242 # define        BITS_PER_WORD   32
 243 # define MAXTABLE       32767
 244 #endif
 245
 246 #define WORDSIZE(n)     (((n) + BITS_PER_WORD - 1) / BITS_PER_WORD)
 247 #define SETBIT(x, i)    ((x)[(i)/BITS_PER_WORD] |= (1<<((i) % BITS_PER_WORD)))
 248 #define RESETBIT(x, i)  ((x)[(i)/BITS_PER_WORD] &= ~(1<<((i) % BITS_PER_WORD)))
 249 #define BITISSET(x, i)  (((x)[(i)/BITS_PER_WORD] & (1<<((i) % BITS_PER_WORD))) != 0)
 250
 251
 252 /*-----------------------------------------.
 253 | Extensions to use for the output files.  |
 254 `-----------------------------------------*/
 255
 256 #ifdef VMS
 257   /* VMS. */
 258 # define EXT_TAB        "_tab"
 259 # define EXT_OUTPUT     ".output"
 260 # define EXT_STYPE_H    "_stype"
 261 # define EXT_GUARD_C    "_guard"
 262 #else /* ! VMS */
 263 # ifdef MSDOS
 264    /* MS DOS. */
 265 #  define EXT_TAB       "_tab"
 266 #  define EXT_OUTPUT    ".out"
 267 #  define EXT_STYPE_H   ".sth"
 268 #  define EXT_GUARD_C   ".guc"
 269 # else /* ! MSDOS */
 270   /* Standard. */
 271 #  define EXT_TAB       ".tab"
 272 #  define EXT_OUTPUT    ".output"
 273 #  define EXT_STYPE_H   ".stype"
 274 #  define EXT_GUARD_C   ".guard"
 275 # endif /* ! MSDOS */
 276 #endif /* ! VMS */
 277
 278 #ifndef DEFAULT_TMPDIR
 279 # define DEFAULT_TMPDIR "/tmp"
 280 #endif
 281
 282
 283
 284 /*----------------------------.
 285 | As memcpy, but for shorts.  |
 286 `----------------------------*/
 287
 288 #define shortcpy(Dest, Src, Num) \
 289   memcpy (Dest, Src, Num * sizeof (short))
 290
 291 /*---------------------.
 292 | Free a linked list.  |
 293 `---------------------*/
 294
 295 #define LIST_FREE(Type, List)                   \
 296 do {                                            \
 297   Type *_node, *_next;                          \
 298   for (_node = List; _node; _node = _next)      \
 299     {                                           \
 300       _next = _node->next;                      \
 301       XFREE (_node);                            \
 302     }                                           \
 303 } while (0)
 304
 305
 306 /*---------------------------------------------.
 307 | Debugging memory allocation (must be last).  |
 308 `---------------------------------------------*/
 309
 310 # if WITH_DMALLOC
 311 #  define DMALLOC_FUNC_CHECK
 312 #  include <dmalloc.h>
 313 # endif /* WITH_DMALLOC */
 314
 315 #endif  /* ! BISON_SYSTEM_H */