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) = xnmalloc (N, sizeof *(P)))
  59 #define REALLOC(P, N) ((P) = xnrealloc (P, N, sizeof *(P)))
  60
  61
  62 /*---------------------.
  63 | Missing prototypes.  |
  64 `---------------------*/
  65
  66 #include <stpcpy.h>
  67
  68
  69 /*-----------------.
  70 | GCC extensions.  |
  71 `-----------------*/
  72
  73 /* Use this to suppress gcc's `...may be used before initialized'
  74    warnings.  */
  75 #ifdef lint
  76 # define IF_LINT(Code) Code
  77 #else
  78 # define IF_LINT(Code) /* empty */
  79 #endif
  80
  81 #ifndef __attribute__
  82 /* This feature is available in gcc versions 2.5 and later.  */
  83 # if !defined (__GNUC__) || __GNUC__ < 2 || \
  84 (__GNUC__ == 2 && __GNUC_MINOR__ < 5) || __STRICT_ANSI__
  85 #  define __attribute__(Spec) /* empty */
  86 # endif
  87 #endif
  88
  89 /* The __-protected variants of `format' and `printf' attributes
  90    are accepted by gcc versions 2.6.4 (effectively 2.7) and later.  */
  91 #if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7)
  92 # define __format__ format
  93 # define __printf__ printf
  94 #endif
  95
  96 #ifndef ATTRIBUTE_NORETURN
  97 # define ATTRIBUTE_NORETURN __attribute__ ((__noreturn__))
  98 #endif
  99
 100 #ifndef ATTRIBUTE_UNUSED
 101 # define ATTRIBUTE_UNUSED __attribute__ ((__unused__))
 102 #endif
 103
 104 /*------.
 105 | NLS.  |
 106 `------*/
 107
 108 #include <locale.h>
 109
 110 #include <gettext.h>
 111 #define _(Msgid)  gettext (Msgid)
 112 #define N_(Msgid) (Msgid)
 113
 114
 115 /*-------------------------------.
 116 | Fix broken compilation flags.  |
 117 `-------------------------------*/
 118
 119 #ifndef LOCALEDIR
 120 # define LOCALEDIR "/usr/local/share/locale"
 121 #endif
 122
 123
 124 /*-----------.
 125 | Booleans.  |
 126 `-----------*/
 127
 128 #include <stdbool.h>
 129
 130
 131 /*-----------.
 132 | Obstacks.  |
 133 `-----------*/
 134
 135 # define obstack_chunk_alloc xmalloc
 136 # define obstack_chunk_free  free
 137 # include <obstack.h>
 138
 139 #define obstack_sgrow(Obs, Str) \
 140   obstack_grow (Obs, Str, strlen (Str))
 141
 142 #define obstack_fgrow1(Obs, Format, Arg1)       \
 143 do {                                            \
 144   char buf[4096];                               \
 145   sprintf (buf, Format, Arg1);                  \
 146   obstack_grow (Obs, buf, strlen (buf));        \
 147 } while (0)
 148
 149 #define obstack_fgrow2(Obs, Format, Arg1, Arg2) \
 150 do {                                            \
 151   char buf[4096];                               \
 152   sprintf (buf, Format, Arg1, Arg2);            \
 153   obstack_grow (Obs, buf, strlen (buf));        \
 154 } while (0)
 155
 156 #define obstack_fgrow3(Obs, Format, Arg1, Arg2, Arg3)   \
 157 do {                                                    \
 158   char buf[4096];                                       \
 159   sprintf (buf, Format, Arg1, Arg2, Arg3);              \
 160   obstack_grow (Obs, buf, strlen (buf));                \
 161 } while (0)
 162
 163 #define obstack_fgrow4(Obs, Format, Arg1, Arg2, Arg3, Arg4)     \
 164 do {                                                            \
 165   char buf[4096];                                               \
 166   sprintf (buf, Format, Arg1, Arg2, Arg3, Arg4);                \
 167   obstack_grow (Obs, buf, strlen (buf));                        \
 168 } while (0)
 169
 170
 171
 172 /*-----------------------------------------.
 173 | Extensions to use for the output files.  |
 174 `-----------------------------------------*/
 175
 176 #ifdef VMS
 177   /* VMS. */
 178 # define TAB_EXT        "_tab"
 179 # define OUTPUT_EXT     ".output"
 180 #else /* ! VMS */
 181 # ifdef MSDOS
 182    /* MS DOS. */
 183 #  define TAB_EXT       "_tab"
 184 #  define OUTPUT_EXT    ".out"
 185 # else /* ! MSDOS */
 186   /* Standard. */
 187 #  define TAB_EXT       ".tab"
 188 #  define OUTPUT_EXT    ".output"
 189 # endif /* ! MSDOS */
 190 #endif /* ! VMS */
 191
 192 #ifndef DEFAULT_TMPDIR
 193 # define DEFAULT_TMPDIR "/tmp"
 194 #endif
 195
 196
 197
 198 /*---------------------.
 199 | Free a linked list.  |
 200 `---------------------*/
 201
 202 #define LIST_FREE(Type, List)                   \
 203 do {                                            \
 204   Type *_node, *_next;                          \
 205   for (_node = List; _node; _node = _next)      \
 206     {                                           \
 207       _next = _node->next;                      \
 208       free (_node);                             \
 209     }                                           \
 210 } while (0)
 211
 212
 213 /*---------------------------------------------.
 214 | Debugging memory allocation (must be last).  |
 215 `---------------------------------------------*/
 216
 217 # if WITH_DMALLOC
 218 #  define DMALLOC_FUNC_CHECK
 219 #  include <dmalloc.h>
 220 # endif /* WITH_DMALLOC */
 221
 222 #endif  /* ! BISON_SYSTEM_H */