src/system.h

   1 /* System-dependent definitions for Bison.
   2
   3    Copyright (C) 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
   4
   5    This program is free software; you can redistribute it and/or modify
   6    it under the terms of the GNU General Public License as published by
   7    the Free Software Foundation; either version 2, or (at your option)
   8    any later version.
   9
  10    This program is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13    GNU General Public License for more details.
  14
  15    You should have received a copy of the GNU General Public License
  16    along with this program; if not, write to the Free Software Foundation,
  17    Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  18
  19 #ifndef BISON_SYSTEM_H
  20 #define BISON_SYSTEM_H
  21
  22 #if HAVE_CONFIG_H
  23 # include <config.h>
  24 #endif
  25
  26 #include <limits.h>
  27 #include <stddef.h>
  28 #include <stdio.h>
  29 #include <stdlib.h>
  30 #include <string.h>
  31
  32 /* Verify a requirement at compile-time (unlike assert, which is runtime).  */
  33 #define verify(name, assertion) struct name {char name[(assertion) ? 1 : -1];}
  34
  35 #if HAVE_SYS_TYPES_H
  36 # include <sys/types.h>
  37 #endif
  38
  39 #if HAVE_UNISTD_H
  40 # include <unistd.h>
  41 #endif
  42
  43 #if HAVE_INTTYPES_H
  44 # include <inttypes.h>
  45 #endif
  46 #if HAVE_STDINT_H
  47 # include <stdint.h>
  48 #endif
  49
  50 #if ! HAVE_UINTPTR_T
  51 /* This isn't perfect, but it's good enough for Bison, which needs
  52    only to hash pointers.  */
  53 typedef size_t uintptr_t;
  54 #endif
  55
  56 #include <xalloc.h>
  57 #define CALLOC(P, N) ((P) = xcalloc (N, sizeof *(P)))
  58 #define MALLOC(P, N) ((P) = xmalloc ((N) * sizeof *(P)))
  59 #define REALLOC(P, N) ((P) = xrealloc (P, (N) * sizeof *(P)))
  60
  61 /* From xstrndup.c.  */
  62 char *xstrndup (const char *str, size_t size);
  63
  64
  65 /*---------------------.
  66 | Missing prototypes.  |
  67 `---------------------*/
  68
  69 #if defined HAVE_DECL_STPCPY && !HAVE_DECL_STPCPY
  70 char *stpcpy (char *dest, const char *src);
  71 #endif
  72
  73 #if defined HAVE_DECL_STRNLEN && !HAVE_DECL_STRNLEN
  74 size_t strnlen (const char *str, size_t maxlen);
  75 #endif
  76
  77 #if defined HAVE_DECL_MEMRCHR && !HAVE_DECL_MEMRCHR
  78 void *memrchr (const void *str, int ch, size_t size);
  79 #endif
  80
  81
  82
  83 /*-----------------.
  84 | GCC extensions.  |
  85 `-----------------*/
  86
  87 /* Use this to suppress gcc's `...may be used before initialized'
  88    warnings.  */
  89 #ifdef lint
  90 # define IF_LINT(Code) Code
  91 #else
  92 # define IF_LINT(Code) /* empty */
  93 #endif
  94
  95 #ifndef __attribute__
  96 /* This feature is available in gcc versions 2.5 and later.  */
  97 # if !defined (__GNUC__) || __GNUC__ < 2 || \
  98 (__GNUC__ == 2 && __GNUC_MINOR__ < 5) || __STRICT_ANSI__
  99 #  define __attribute__(Spec) /* empty */
 100 # endif
 101 #endif
 102
 103 /* The __-protected variants of `format' and `printf' attributes
 104    are accepted by gcc versions 2.6.4 (effectively 2.7) and later.  */
 105 #if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7)
 106 # define __format__ format
 107 # define __printf__ printf
 108 #endif
 109
 110 #ifndef ATTRIBUTE_NORETURN
 111 # define ATTRIBUTE_NORETURN __attribute__ ((__noreturn__))
 112 #endif
 113
 114 #ifndef ATTRIBUTE_UNUSED
 115 # define ATTRIBUTE_UNUSED __attribute__ ((__unused__))
 116 #endif
 117
 118 /*------.
 119 | NLS.  |
 120 `------*/
 121
 122 #include <locale.h>
 123
 124 #include <gettext.h>
 125 #define _(Msgid)  gettext (Msgid)
 126 #define N_(Msgid) (Msgid)
 127
 128
 129 /*-------------------------------.
 130 | Fix broken compilation flags.  |
 131 `-------------------------------*/
 132
 133 #ifndef LOCALEDIR
 134 # define LOCALEDIR "/usr/local/share/locale"
 135 #endif
 136
 137
 138 /*-----------.
 139 | Booleans.  |
 140 `-----------*/
 141
 142 #include <stdbool.h>
 143
 144
 145 /*-----------.
 146 | Obstacks.  |
 147 `-----------*/
 148
 149 # define obstack_chunk_alloc xmalloc
 150 # define obstack_chunk_free  free
 151 # include <obstack.h>
 152
 153 #define obstack_sgrow(Obs, Str) \
 154   obstack_grow (Obs, Str, strlen (Str))
 155
 156 #define obstack_fgrow1(Obs, Format, Arg1)       \
 157 do {                                            \
 158   char buf[4096];                               \
 159   sprintf (buf, Format, Arg1);                  \
 160   obstack_grow (Obs, buf, strlen (buf));        \
 161 } while (0)
 162
 163 #define obstack_fgrow2(Obs, Format, Arg1, Arg2) \
 164 do {                                            \
 165   char buf[4096];                               \
 166   sprintf (buf, Format, Arg1, Arg2);            \
 167   obstack_grow (Obs, buf, strlen (buf));        \
 168 } while (0)
 169
 170 #define obstack_fgrow3(Obs, Format, Arg1, Arg2, Arg3)   \
 171 do {                                                    \
 172   char buf[4096];                                       \
 173   sprintf (buf, Format, Arg1, Arg2, Arg3);              \
 174   obstack_grow (Obs, buf, strlen (buf));                \
 175 } while (0)
 176
 177 #define obstack_fgrow4(Obs, Format, Arg1, Arg2, Arg3, Arg4)     \
 178 do {                                                            \
 179   char buf[4096];                                               \
 180   sprintf (buf, Format, Arg1, Arg2, Arg3, Arg4);                \
 181   obstack_grow (Obs, buf, strlen (buf));                        \
 182 } while (0)
 183
 184
 185
 186 /*-----------------------------------------.
 187 | Extensions to use for the output files.  |
 188 `-----------------------------------------*/
 189
 190 #ifdef VMS
 191   /* VMS. */
 192 # define TAB_EXT        "_tab"
 193 # define OUTPUT_EXT     ".output"
 194 #else /* ! VMS */
 195 # ifdef MSDOS
 196    /* MS DOS. */
 197 #  define TAB_EXT       "_tab"
 198 #  define OUTPUT_EXT    ".out"
 199 # else /* ! MSDOS */
 200   /* Standard. */
 201 #  define TAB_EXT       ".tab"
 202 #  define OUTPUT_EXT    ".output"
 203 # endif /* ! MSDOS */
 204 #endif /* ! VMS */
 205
 206 #ifndef DEFAULT_TMPDIR
 207 # define DEFAULT_TMPDIR "/tmp"
 208 #endif
 209
 210
 211
 212 /*---------------------.
 213 | Free a linked list.  |
 214 `---------------------*/
 215
 216 #define LIST_FREE(Type, List)                   \
 217 do {                                            \
 218   Type *_node, *_next;                          \
 219   for (_node = List; _node; _node = _next)      \
 220     {                                           \
 221       _next = _node->next;                      \
 222       XFREE (_node);                            \
 223     }                                           \
 224 } while (0)
 225
 226
 227 /*---------------------------------------------.
 228 | Debugging memory allocation (must be last).  |
 229 `---------------------------------------------*/
 230
 231 # if WITH_DMALLOC
 232 #  define DMALLOC_FUNC_CHECK
 233 #  include <dmalloc.h>
 234 # endif /* WITH_DMALLOC */
 235
 236 #endif  /* ! BISON_SYSTEM_H */