src/system.h

   1 /* System-dependent definitions for Bison.
   2
   3    Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005 Free Software
   4    Foundation, Inc.
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 2, or (at your option)
   9    any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program; if not, write to the Free Software Foundation,
  18    Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
  19
  20 #ifndef BISON_SYSTEM_H
  21 #define BISON_SYSTEM_H
  22
  23 #if HAVE_CONFIG_H
  24 # include <config.h>
  25 #endif
  26
  27 #include <limits.h>
  28 #include <stddef.h>
  29 #include <stdio.h>
  30 #include <stdlib.h>
  31 #include <string.h>
  32
  33 /* Verify a requirement at compile-time (unlike assert, which is runtime).  */
  34 #define verify(name, assertion) struct name {char name[(assertion) ? 1 : -1];}
  35
  36 #if HAVE_SYS_TYPES_H
  37 # include <sys/types.h>
  38 #endif
  39
  40 #if HAVE_UNISTD_H
  41 # include <unistd.h>
  42 #endif
  43
  44 #if HAVE_INTTYPES_H
  45 # include <inttypes.h>
  46 #endif
  47 #if HAVE_STDINT_H
  48 # include <stdint.h>
  49 #endif
  50
  51 #if ! HAVE_UINTPTR_T
  52 /* This isn't perfect, but it's good enough for Bison, which needs
  53    only to hash pointers.  */
  54 typedef size_t uintptr_t;
  55 #endif
  56
  57 #include <xalloc.h>
  58
  59
  60 /*---------------------.
  61 | Missing prototypes.  |
  62 `---------------------*/
  63
  64 #include <stpcpy.h>
  65
  66
  67 /*-----------------.
  68 | GCC extensions.  |
  69 `-----------------*/
  70
  71 /* Use this to suppress gcc's `...may be used before initialized'
  72    warnings.  */
  73 #ifdef lint
  74 # define IF_LINT(Code) Code
  75 #else
  76 # define IF_LINT(Code) /* empty */
  77 #endif
  78
  79 #ifndef __attribute__
  80 /* This feature is available in gcc versions 2.5 and later.  */
  81 # if !defined (__GNUC__) || __GNUC__ < 2 || \
  82 (__GNUC__ == 2 && __GNUC_MINOR__ < 5) || __STRICT_ANSI__
  83 #  define __attribute__(Spec) /* empty */
  84 # endif
  85 #endif
  86
  87 /* The __-protected variants of `format' and `printf' attributes
  88    are accepted by gcc versions 2.6.4 (effectively 2.7) and later.  */
  89 #if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7)
  90 # define __format__ format
  91 # define __printf__ printf
  92 #endif
  93
  94 #ifndef ATTRIBUTE_NORETURN
  95 # define ATTRIBUTE_NORETURN __attribute__ ((__noreturn__))
  96 #endif
  97
  98 #ifndef ATTRIBUTE_UNUSED
  99 # define ATTRIBUTE_UNUSED __attribute__ ((__unused__))
 100 #endif
 101
 102 /*------.
 103 | NLS.  |
 104 `------*/
 105
 106 #include <locale.h>
 107
 108 #include <gettext.h>
 109 #define _(Msgid)  gettext (Msgid)
 110 #define N_(Msgid) (Msgid)
 111
 112
 113 /*-------------------------------.
 114 | Fix broken compilation flags.  |
 115 `-------------------------------*/
 116
 117 #ifndef LOCALEDIR
 118 # define LOCALEDIR "/usr/local/share/locale"
 119 #endif
 120
 121
 122 /*-----------.
 123 | Booleans.  |
 124 `-----------*/
 125
 126 #include <stdbool.h>
 127
 128
 129 /*-----------.
 130 | Obstacks.  |
 131 `-----------*/
 132
 133 # define obstack_chunk_alloc xmalloc
 134 # define obstack_chunk_free  free
 135 # include <obstack.h>
 136
 137 #define obstack_sgrow(Obs, Str) \
 138   obstack_grow (Obs, Str, strlen (Str))
 139
 140 #define obstack_fgrow1(Obs, Format, Arg1)       \
 141 do {                                            \
 142   char buf[4096];                               \
 143   sprintf (buf, Format, Arg1);                  \
 144   obstack_grow (Obs, buf, strlen (buf));        \
 145 } while (0)
 146
 147 #define obstack_fgrow2(Obs, Format, Arg1, Arg2) \
 148 do {                                            \
 149   char buf[4096];                               \
 150   sprintf (buf, Format, Arg1, Arg2);            \
 151   obstack_grow (Obs, buf, strlen (buf));        \
 152 } while (0)
 153
 154 #define obstack_fgrow3(Obs, Format, Arg1, Arg2, Arg3)   \
 155 do {                                                    \
 156   char buf[4096];                                       \
 157   sprintf (buf, Format, Arg1, Arg2, Arg3);              \
 158   obstack_grow (Obs, buf, strlen (buf));                \
 159 } while (0)
 160
 161 #define obstack_fgrow4(Obs, Format, Arg1, Arg2, Arg3, Arg4)     \
 162 do {                                                            \
 163   char buf[4096];                                               \
 164   sprintf (buf, Format, Arg1, Arg2, Arg3, Arg4);                \
 165   obstack_grow (Obs, buf, strlen (buf));                        \
 166 } while (0)
 167
 168
 169
 170 /*-----------------------------------------.
 171 | Extensions to use for the output files.  |
 172 `-----------------------------------------*/
 173
 174 #ifndef OUTPUT_EXT
 175 # define OUTPUT_EXT ".output"
 176 #endif
 177
 178 #ifndef TAB_EXT
 179 # define TAB_EXT ".tab"
 180 #endif
 181
 182 #ifndef DEFAULT_TMPDIR
 183 # define DEFAULT_TMPDIR "/tmp"
 184 #endif
 185
 186
 187
 188 /*---------------------.
 189 | Free a linked list.  |
 190 `---------------------*/
 191
 192 #define LIST_FREE(Type, List)                   \
 193 do {                                            \
 194   Type *_node, *_next;                          \
 195   for (_node = List; _node; _node = _next)      \
 196     {                                           \
 197       _next = _node->next;                      \
 198       free (_node);                             \
 199     }                                           \
 200 } while (0)
 201
 202
 203 /*---------------------------------------------.
 204 | Debugging memory allocation (must be last).  |
 205 `---------------------------------------------*/
 206
 207 # if WITH_DMALLOC
 208 #  define DMALLOC_FUNC_CHECK
 209 #  include <dmalloc.h>
 210 # endif /* WITH_DMALLOC */
 211
 212 #endif  /* ! BISON_SYSTEM_H */