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
  58
  59 /*---------------------.
  60 | Missing prototypes.  |
  61 `---------------------*/
  62
  63 #include <stpcpy.h>
  64
  65
  66 /*-----------------.
  67 | GCC extensions.  |
  68 `-----------------*/
  69
  70 /* Use this to suppress gcc's `...may be used before initialized'
  71    warnings.  */
  72 #ifdef lint
  73 # define IF_LINT(Code) Code
  74 #else
  75 # define IF_LINT(Code) /* empty */
  76 #endif
  77
  78 #ifndef __attribute__
  79 /* This feature is available in gcc versions 2.5 and later.  */
  80 # if !defined (__GNUC__) || __GNUC__ < 2 || \
  81 (__GNUC__ == 2 && __GNUC_MINOR__ < 5) || __STRICT_ANSI__
  82 #  define __attribute__(Spec) /* empty */
  83 # endif
  84 #endif
  85
  86 /* The __-protected variants of `format' and `printf' attributes
  87    are accepted by gcc versions 2.6.4 (effectively 2.7) and later.  */
  88 #if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7)
  89 # define __format__ format
  90 # define __printf__ printf
  91 #endif
  92
  93 #ifndef ATTRIBUTE_NORETURN
  94 # define ATTRIBUTE_NORETURN __attribute__ ((__noreturn__))
  95 #endif
  96
  97 #ifndef ATTRIBUTE_UNUSED
  98 # define ATTRIBUTE_UNUSED __attribute__ ((__unused__))
  99 #endif
 100
 101 /*------.
 102 | NLS.  |
 103 `------*/
 104
 105 #include <locale.h>
 106
 107 #include <gettext.h>
 108 #define _(Msgid)  gettext (Msgid)
 109 #define N_(Msgid) (Msgid)
 110
 111
 112 /*-------------------------------.
 113 | Fix broken compilation flags.  |
 114 `-------------------------------*/
 115
 116 #ifndef LOCALEDIR
 117 # define LOCALEDIR "/usr/local/share/locale"
 118 #endif
 119
 120
 121 /*-----------.
 122 | Booleans.  |
 123 `-----------*/
 124
 125 #include <stdbool.h>
 126
 127
 128 /*-----------.
 129 | Obstacks.  |
 130 `-----------*/
 131
 132 # define obstack_chunk_alloc xmalloc
 133 # define obstack_chunk_free  free
 134 # include <obstack.h>
 135
 136 #define obstack_sgrow(Obs, Str) \
 137   obstack_grow (Obs, Str, strlen (Str))
 138
 139 #define obstack_fgrow1(Obs, Format, Arg1)       \
 140 do {                                            \
 141   char buf[4096];                               \
 142   sprintf (buf, Format, Arg1);                  \
 143   obstack_grow (Obs, buf, strlen (buf));        \
 144 } while (0)
 145
 146 #define obstack_fgrow2(Obs, Format, Arg1, Arg2) \
 147 do {                                            \
 148   char buf[4096];                               \
 149   sprintf (buf, Format, Arg1, Arg2);            \
 150   obstack_grow (Obs, buf, strlen (buf));        \
 151 } while (0)
 152
 153 #define obstack_fgrow3(Obs, Format, Arg1, Arg2, Arg3)   \
 154 do {                                                    \
 155   char buf[4096];                                       \
 156   sprintf (buf, Format, Arg1, Arg2, Arg3);              \
 157   obstack_grow (Obs, buf, strlen (buf));                \
 158 } while (0)
 159
 160 #define obstack_fgrow4(Obs, Format, Arg1, Arg2, Arg3, Arg4)     \
 161 do {                                                            \
 162   char buf[4096];                                               \
 163   sprintf (buf, Format, Arg1, Arg2, Arg3, Arg4);                \
 164   obstack_grow (Obs, buf, strlen (buf));                        \
 165 } while (0)
 166
 167
 168
 169 /*-----------------------------------------.
 170 | Extensions to use for the output files.  |
 171 `-----------------------------------------*/
 172
 173 #ifdef VMS
 174   /* VMS. */
 175 # define TAB_EXT        "_tab"
 176 # define OUTPUT_EXT     ".output"
 177 #else /* ! VMS */
 178 # ifdef MSDOS
 179    /* MS DOS. */
 180 #  define TAB_EXT       "_tab"
 181 #  define OUTPUT_EXT    ".out"
 182 # else /* ! MSDOS */
 183   /* Standard. */
 184 #  define TAB_EXT       ".tab"
 185 #  define OUTPUT_EXT    ".output"
 186 # endif /* ! MSDOS */
 187 #endif /* ! VMS */
 188
 189 #ifndef DEFAULT_TMPDIR
 190 # define DEFAULT_TMPDIR "/tmp"
 191 #endif
 192
 193
 194
 195 /*---------------------.
 196 | Free a linked list.  |
 197 `---------------------*/
 198
 199 #define LIST_FREE(Type, List)                   \
 200 do {                                            \
 201   Type *_node, *_next;                          \
 202   for (_node = List; _node; _node = _next)      \
 203     {                                           \
 204       _next = _node->next;                      \
 205       free (_node);                             \
 206     }                                           \
 207 } while (0)
 208
 209
 210 /*---------------------------------------------.
 211 | Debugging memory allocation (must be last).  |
 212 `---------------------------------------------*/
 213
 214 # if WITH_DMALLOC
 215 #  define DMALLOC_FUNC_CHECK
 216 #  include <dmalloc.h>
 217 # endif /* WITH_DMALLOC */
 218
 219 #endif  /* ! BISON_SYSTEM_H */