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 <limits.h>
  83
  84 #include <xalloc.h>
  85
  86 /* From xstrndup.c.  */
  87 char *xstrndup (const char *s, size_t n);
  88
  89
  90 /*---------------------.
  91 | Missing prototypes.  |
  92 `---------------------*/
  93
  94 #if defined HAVE_DECL_STPCPY && !HAVE_DECL_STPCPY
  95 char *stpcpy (char *dest, const char *src);
  96 #endif
  97
  98 #if defined HAVE_DECL_STRCHR && !HAVE_DECL_STRCHR
  99 char *strchr (const char *s, int c);
 100 #endif
 101
 102 #if defined HAVE_DECL_STRSPN && !HAVE_DECL_STRSPN
 103 size_t strspn (const char *s, const char *accept);
 104 #endif
 105
 106 #if defined HAVE_DECL_STRNLEN && !HAVE_DECL_STRNLEN
 107 size_t strnlen (const char *s, size_t maxlen);
 108 #endif
 109
 110 #if defined HAVE_DECL_MEMCHR && !HAVE_DECL_MEMCHR
 111 void *memchr (const void *s, int c, size_t n);
 112 #endif
 113
 114 #if defined HAVE_DECL_MEMRCHR && !HAVE_DECL_MEMRCHR
 115 void *memrchr (const void *s, int c, size_t n);
 116 #endif
 117
 118
 119
 120 /*-----------------.
 121 | GCC extensions.  |
 122 `-----------------*/
 123
 124 /* Use this to suppress gcc's `...may be used before initialized'
 125    warnings.  */
 126 #ifdef lint
 127 # define IF_LINT(Code) Code
 128 #else
 129 # define IF_LINT(Code) /* empty */
 130 #endif
 131
 132 #ifndef __attribute__
 133 /* This feature is available in gcc versions 2.5 and later.  */
 134 # if !defined (__GNUC__) || __GNUC__ < 2 || \
 135 (__GNUC__ == 2 && __GNUC_MINOR__ < 5) || __STRICT_ANSI__
 136 #  define __attribute__(Spec) /* empty */
 137 # endif
 138 #endif
 139
 140 /* The __-protected variants of `format' and `printf' attributes
 141    are accepted by gcc versions 2.6.4 (effectively 2.7) and later.  */
 142 #if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7)
 143 # define __format__ format
 144 # define __printf__ printf
 145 #endif
 146
 147 #ifndef ATTRIBUTE_NORETURN
 148 # define ATTRIBUTE_NORETURN __attribute__ ((__noreturn__))
 149 #endif
 150
 151 #ifndef ATTRIBUTE_UNUSED
 152 # define ATTRIBUTE_UNUSED __attribute__ ((__unused__))
 153 #endif
 154
 155 /*------.
 156 | NLS.  |
 157 `------*/
 158
 159 #if HAVE_LOCALE_H
 160 # include <locale.h>
 161 #endif
 162 #if !HAVE_SETLOCALE
 163 # define setlocale(Category, Locale)
 164 #endif
 165
 166 #include <gettext.h>
 167 #define _(Msgid)  gettext (Msgid)
 168 #define N_(Msgid) (Msgid)
 169
 170
 171 /*-------------------------------.
 172 | Fix broken compilation flags.  |
 173 `-------------------------------*/
 174
 175 #ifndef LOCALEDIR
 176 # define LOCALEDIR "/usr/local/share/locale"
 177 #endif
 178
 179
 180 /*-----------.
 181 | Booleans.  |
 182 `-----------*/
 183
 184 #if HAVE_STDBOOL_H
 185 # include <stdbool.h>
 186 #else
 187 typedef enum {false = 0, true = 1} bool;
 188 #endif
 189
 190
 191 /*-----------.
 192 | Obstacks.  |
 193 `-----------*/
 194
 195 # define obstack_chunk_alloc xmalloc
 196 # define obstack_chunk_free  free
 197 # include <obstack.h>
 198
 199 #define obstack_sgrow(Obs, Str) \
 200   obstack_grow (Obs, Str, strlen (Str))
 201
 202 #define obstack_fgrow1(Obs, Format, Arg1)       \
 203 do {                                            \
 204   char buf[4096];                               \
 205   sprintf (buf, Format, Arg1);                  \
 206   obstack_grow (Obs, buf, strlen (buf));        \
 207 } while (0)
 208
 209 #define obstack_fgrow2(Obs, Format, Arg1, Arg2) \
 210 do {                                            \
 211   char buf[4096];                               \
 212   sprintf (buf, Format, Arg1, Arg2);            \
 213   obstack_grow (Obs, buf, strlen (buf));        \
 214 } while (0)
 215
 216 #define obstack_fgrow3(Obs, Format, Arg1, Arg2, Arg3)   \
 217 do {                                                    \
 218   char buf[4096];                                       \
 219   sprintf (buf, Format, Arg1, Arg2, Arg3);              \
 220   obstack_grow (Obs, buf, strlen (buf));                \
 221 } while (0)
 222
 223 #define obstack_fgrow4(Obs, Format, Arg1, Arg2, Arg3, Arg4)     \
 224 do {                                                            \
 225   char buf[4096];                                               \
 226   sprintf (buf, Format, Arg1, Arg2, Arg3, Arg4);                \
 227   obstack_grow (Obs, buf, strlen (buf));                        \
 228 } while (0)
 229
 230
 231
 232 /*-----------------------------------------.
 233 | Extensions to use for the output files.  |
 234 `-----------------------------------------*/
 235
 236 #ifdef VMS
 237   /* VMS. */
 238 # define TAB_EXT        "_tab"
 239 # define OUTPUT_EXT     ".output"
 240 #else /* ! VMS */
 241 # ifdef MSDOS
 242    /* MS DOS. */
 243 #  define TAB_EXT       "_tab"
 244 #  define OUTPUT_EXT    ".out"
 245 # else /* ! MSDOS */
 246   /* Standard. */
 247 #  define TAB_EXT       ".tab"
 248 #  define OUTPUT_EXT    ".output"
 249 # endif /* ! MSDOS */
 250 #endif /* ! VMS */
 251
 252 #ifndef DEFAULT_TMPDIR
 253 # define DEFAULT_TMPDIR "/tmp"
 254 #endif
 255
 256
 257
 258 /*---------------------.
 259 | Free a linked list.  |
 260 `---------------------*/
 261
 262 #define LIST_FREE(Type, List)                   \
 263 do {                                            \
 264   Type *_node, *_next;                          \
 265   for (_node = List; _node; _node = _next)      \
 266     {                                           \
 267       _next = _node->next;                      \
 268       XFREE (_node);                            \
 269     }                                           \
 270 } while (0)
 271
 272
 273 /*---------------------------------------------.
 274 | Debugging memory allocation (must be last).  |
 275 `---------------------------------------------*/
 276
 277 # if WITH_DMALLOC
 278 #  define DMALLOC_FUNC_CHECK
 279 #  include <dmalloc.h>
 280 # endif /* WITH_DMALLOC */
 281
 282 #endif  /* ! BISON_SYSTEM_H */