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 #if 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 /* Verify a requirement at compile-time (unlike assert, which is runtime).  */
  45 #define verify(name, assertion) struct name {char name[(assertion) ? 1 : -1];}
  46
  47 #if HAVE_SYS_TYPES_H
  48 # include <sys/types.h>
  49 #endif
  50
  51 #if HAVE_STDLIB_H
  52 # include <stdlib.h>
  53 #endif
  54
  55 /* The following test is to work around the gross typo in
  56    systems like Sony NEWS-OS Release 4.0C, whereby EXIT_FAILURE
  57    is defined to 0, not 1.  */
  58 #if !EXIT_FAILURE
  59 # undef EXIT_FAILURE
  60 # define EXIT_FAILURE 1
  61 #endif
  62
  63 #ifndef EXIT_SUCCESS
  64 # define EXIT_SUCCESS 0
  65 #endif
  66
  67 #if HAVE_UNISTD_H
  68 # include <unistd.h>
  69 #endif
  70
  71 #if defined(STDC_HEADERS) || defined(HAVE_STRING_H)
  72 # include <string.h>
  73 /* An ANSI string.h and pre-ANSI memory.h might conflict.  */
  74 # if !defined(STDC_HEADERS) && defined(HAVE_MEMORY_H)
  75 #  include <memory.h>
  76 # endif /* not STDC_HEADERS and HAVE_MEMORY_H */
  77 #else /* not STDC_HEADERS and not HAVE_STRING_H */
  78 # include <strings.h>
  79 /* memory.h and strings.h conflict on some systems.  */
  80 #endif /* not STDC_HEADERS and not HAVE_STRING_H */
  81
  82 #include <errno.h>
  83 #include <limits.h>
  84
  85 # include "xalloc.h"
  86
  87 /* From xstrndup.c.  */
  88 char *xstrndup (const char *s, size_t n);
  89
  90
  91 /*----------------.
  92 | Using timevar.  |
  93 `----------------*/
  94
  95 #include "timevar.h"
  96 extern int time_report;
  97
  98
  99 /*---------------------.
 100 | Missing prototypes.  |
 101 `---------------------*/
 102
 103 #if defined HAVE_DECL_STPCPY && !HAVE_DECL_STPCPY
 104 char *stpcpy (char *dest, const char *src);
 105 #endif
 106
 107 #if defined HAVE_DECL_STRCHR && !HAVE_DECL_STRCHR
 108 char *strchr (const char *s, int c);
 109 #endif
 110
 111 #if defined HAVE_DECL_STRSPN && !HAVE_DECL_STRSPN
 112 size_t strspn (const char *s, const char *accept);
 113 #endif
 114
 115 #if defined HAVE_DECL_STRNLEN && !HAVE_DECL_STRNLEN
 116 size_t strnlen (const char *s, size_t maxlen);
 117 #endif
 118
 119 #if defined HAVE_DECL_MEMCHR && !HAVE_DECL_MEMCHR
 120 void *memchr (const void *s, int c, size_t n);
 121 #endif
 122
 123 #if defined HAVE_DECL_MEMRCHR && !HAVE_DECL_MEMRCHR
 124 void *memrchr (const void *s, int c, size_t n);
 125 #endif
 126
 127
 128
 129 /*-----------------.
 130 | GCC extensions.  |
 131 `-----------------*/
 132
 133 /* Use this to suppress gcc's `...may be used before initialized'
 134    warnings.  */
 135 #ifdef lint
 136 # define IF_LINT(Code) Code
 137 #else
 138 # define IF_LINT(Code) /* empty */
 139 #endif
 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 #if HAVE_LOCALE_H
 169 # include <locale.h>
 170 #endif
 171 #if !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 #if HAVE_STDBOOL_H
 194 # include <stdbool.h>
 195 #else
 196 typedef enum {false = 0, true = 1} bool;
 197 #endif
 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 */