src/system.h

   1 /* System-dependent definitions for Bison.
   2
   3    Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006 Free
   4    Software 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 /* flex 2.5.31 gratutiously defines macros like INT8_MIN.  But this
  24    runs afoul of pre-C99 compilers that have <inttypes.h> or
  25    <stdint.h>, which are included below if available.  It also runs
  26    afoul of pre-C99 compilers that define these macros in <limits.h>.  */
  27 #if ! defined __STDC_VERSION__ || __STDC_VERSION__ < 199901
  28 # undef INT8_MIN
  29 # undef INT16_MIN
  30 # undef INT32_MIN
  31 # undef INT8_MAX
  32 # undef INT16_MAX
  33 # undef UINT8_MAX
  34 # undef INT32_MAX
  35 # undef UINT16_MAX
  36 # undef UINT32_MAX
  37 #endif
  38
  39 #include <limits.h>
  40 #include <stddef.h>
  41 #include <stdlib.h>
  42 #include <string.h>
  43
  44 #include "unlocked-io.h"
  45
  46 #if HAVE_SYS_TYPES_H
  47 # include <sys/types.h>
  48 #endif
  49
  50 #if HAVE_UNISTD_H
  51 # include <unistd.h>
  52 #endif
  53
  54 #if HAVE_INTTYPES_H
  55 # include <inttypes.h>
  56 #endif
  57 #if HAVE_STDINT_H
  58 # include <stdint.h>
  59 #endif
  60
  61 #if ! HAVE_UINTPTR_T
  62 /* This isn't perfect, but it's good enough for Bison, which needs
  63    only to hash pointers.  */
  64 typedef size_t uintptr_t;
  65 #endif
  66
  67 #include <verify.h>
  68 #include <xalloc.h>
  69
  70
  71 /*---------------------.
  72 | Missing prototypes.  |
  73 `---------------------*/
  74
  75 #include <stpcpy.h>
  76
  77 /* From lib/basename.c. */
  78 char *base_name (char const *name);
  79
  80
  81 /*-----------------.
  82 | GCC extensions.  |
  83 `-----------------*/
  84
  85 /* Use this to suppress gcc's `...may be used before initialized'
  86    warnings.  */
  87 #ifdef lint
  88 # define IF_LINT(Code) Code
  89 #else
  90 # define IF_LINT(Code) /* empty */
  91 #endif
  92
  93 #ifndef __attribute__
  94 /* This feature is available in gcc versions 2.5 and later.  */
  95 # if (! defined __GNUC__ || __GNUC__ < 2 \
  96       || (__GNUC__ == 2 && __GNUC_MINOR__ < 5) || __STRICT_ANSI__)
  97 #  define __attribute__(Spec) /* empty */
  98 # endif
  99 #endif
 100
 101 /* The __-protected variants of `format' and `printf' attributes
 102    are accepted by gcc versions 2.6.4 (effectively 2.7) and later.  */
 103 #if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7)
 104 # define __format__ format
 105 # define __printf__ printf
 106 #endif
 107
 108 #ifndef ATTRIBUTE_NORETURN
 109 # define ATTRIBUTE_NORETURN __attribute__ ((__noreturn__))
 110 #endif
 111
 112 #ifndef ATTRIBUTE_UNUSED
 113 # define ATTRIBUTE_UNUSED __attribute__ ((__unused__))
 114 #endif
 115
 116 #define FUNCTION_PRINT() fprintf (stderr, "%s: ", __func__)
 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 #ifndef OUTPUT_EXT
 191 # define OUTPUT_EXT ".output"
 192 #endif
 193
 194 #ifndef TAB_EXT
 195 # define TAB_EXT ".tab"
 196 #endif
 197
 198 #ifndef DEFAULT_TMPDIR
 199 # define DEFAULT_TMPDIR "/tmp"
 200 #endif
 201
 202
 203
 204 /*---------------------.
 205 | Free a linked list.  |
 206 `---------------------*/
 207
 208 #define LIST_FREE(Type, List)                   \
 209 do {                                            \
 210   Type *_node, *_next;                          \
 211   for (_node = List; _node; _node = _next)      \
 212     {                                           \
 213       _next = _node->next;                      \
 214       free (_node);                             \
 215     }                                           \
 216 } while (0)
 217
 218
 219 /* Assertions.  <assert.h>'s assertions are too heavyweight, and can
 220    be disabled too easily, so implement it separately here.  */
 221 #define assert(x) ((void) ((x) || (abort (), 0)))
 222
 223
 224 /*---------------------------------------------.
 225 | Debugging memory allocation (must be last).  |
 226 `---------------------------------------------*/
 227
 228 # if WITH_DMALLOC
 229 #  define DMALLOC_FUNC_CHECK
 230 #  include <dmalloc.h>
 231 # endif /* WITH_DMALLOC */
 232
 233 #endif  /* ! BISON_SYSTEM_H */