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 #if HAVE_SYS_TYPES_H
  45 # include <sys/types.h>
  46 #endif
  47
  48 #if HAVE_UNISTD_H
  49 # include <unistd.h>
  50 #endif
  51
  52 #if HAVE_INTTYPES_H
  53 # include <inttypes.h>
  54 #endif
  55
  56 #include <stdint.h>
  57
  58 #ifndef UINTPTR_MAX
  59 /* This isn't perfect, but it's good enough for Bison, which needs
  60    only to hash pointers.  */
  61 typedef size_t uintptr_t;
  62 #endif
  63
  64
  65 /*---------.
  66 | Gnulib.  |
  67 `---------*/
  68
  69 #include <stpcpy.h>
  70 #include <unlocked-io.h>
  71 #include <verify.h>
  72 #include <xalloc.h>
  73
  74
  75 /*-----------------.
  76 | GCC extensions.  |
  77 `-----------------*/
  78
  79 /* Use this to suppress gcc's `...may be used before initialized'
  80    warnings.  */
  81 #ifdef lint
  82 # define IF_LINT(Code) Code
  83 #else
  84 # define IF_LINT(Code) /* empty */
  85 #endif
  86
  87 #ifndef __attribute__
  88 /* This feature is available in gcc versions 2.5 and later.  */
  89 # if (! defined __GNUC__ || __GNUC__ < 2 \
  90       || (__GNUC__ == 2 && __GNUC_MINOR__ < 5) || __STRICT_ANSI__)
  91 #  define __attribute__(Spec) /* empty */
  92 # endif
  93 #endif
  94
  95 /* The __-protected variants of `format' and `printf' attributes
  96    are accepted by gcc versions 2.6.4 (effectively 2.7) and later.  */
  97 #if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7)
  98 # define __format__ format
  99 # define __printf__ printf
 100 #endif
 101
 102 #ifndef ATTRIBUTE_NORETURN
 103 # define ATTRIBUTE_NORETURN __attribute__ ((__noreturn__))
 104 #endif
 105
 106 #ifndef ATTRIBUTE_UNUSED
 107 # define ATTRIBUTE_UNUSED __attribute__ ((__unused__))
 108 #endif
 109
 110 #define FUNCTION_PRINT() fprintf (stderr, "%s: ", __func__)
 111
 112 /*------.
 113 | NLS.  |
 114 `------*/
 115
 116 #include <locale.h>
 117
 118 #include <gettext.h>
 119 #define _(Msgid)  gettext (Msgid)
 120 #define N_(Msgid) (Msgid)
 121
 122
 123 /*-------------------------------.
 124 | Fix broken compilation flags.  |
 125 `-------------------------------*/
 126
 127 #ifndef LOCALEDIR
 128 # define LOCALEDIR "/usr/local/share/locale"
 129 #endif
 130
 131
 132 /*-----------.
 133 | Booleans.  |
 134 `-----------*/
 135
 136 #include <stdbool.h>
 137
 138
 139 /*-----------.
 140 | Obstacks.  |
 141 `-----------*/
 142
 143 #define obstack_chunk_alloc xmalloc
 144 #define obstack_chunk_free  free
 145 #include <obstack.h>
 146
 147 #define obstack_sgrow(Obs, Str) \
 148   obstack_grow (Obs, Str, strlen (Str))
 149
 150 #define obstack_fgrow1(Obs, Format, Arg1)       \
 151 do {                                            \
 152   char buf[4096];                               \
 153   sprintf (buf, Format, Arg1);                  \
 154   obstack_grow (Obs, buf, strlen (buf));        \
 155 } while (0)
 156
 157 #define obstack_fgrow2(Obs, Format, Arg1, Arg2) \
 158 do {                                            \
 159   char buf[4096];                               \
 160   sprintf (buf, Format, Arg1, Arg2);            \
 161   obstack_grow (Obs, buf, strlen (buf));        \
 162 } while (0)
 163
 164 #define obstack_fgrow3(Obs, Format, Arg1, Arg2, Arg3)   \
 165 do {                                                    \
 166   char buf[4096];                                       \
 167   sprintf (buf, Format, Arg1, Arg2, Arg3);              \
 168   obstack_grow (Obs, buf, strlen (buf));                \
 169 } while (0)
 170
 171 #define obstack_fgrow4(Obs, Format, Arg1, Arg2, Arg3, Arg4)     \
 172 do {                                                            \
 173   char buf[4096];                                               \
 174   sprintf (buf, Format, Arg1, Arg2, Arg3, Arg4);                \
 175   obstack_grow (Obs, buf, strlen (buf));                        \
 176 } while (0)
 177
 178
 179
 180 /*-----------------------------------------.
 181 | Extensions to use for the output files.  |
 182 `-----------------------------------------*/
 183
 184 #ifndef OUTPUT_EXT
 185 # define OUTPUT_EXT ".output"
 186 #endif
 187
 188 #ifndef TAB_EXT
 189 # define TAB_EXT ".tab"
 190 #endif
 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 /* Assertions.  <assert.h>'s assertions are too heavyweight, and can
 214    be disabled too easily, so implement it separately here.  */
 215 #define assert(x) ((void) ((x) || (abort (), 0)))
 216
 217
 218 /*---------------------------------------------.
 219 | Debugging memory allocation (must be last).  |
 220 `---------------------------------------------*/
 221
 222 # if WITH_DMALLOC
 223 #  define DMALLOC_FUNC_CHECK
 224 #  include <dmalloc.h>
 225 # endif /* WITH_DMALLOC */
 226
 227 #endif  /* ! BISON_SYSTEM_H */