src/complain.c

   1 /* Declaration for error-reporting function for Bison.
   2    Copyright (C) 2000, 2001, 2002  Free Software Foundation, Inc.
   3
   4    This program is free software; you can redistribute it and/or modify it
   5    under the terms of the GNU General Public License as published by the
   6    Free Software Foundation; either version 2, or (at your option) any
   7    later version.
   8
   9    This program is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License
  15    along with this program; if not, write to the Free Software
  16    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
  17    USA.  */
  18
  19 /* Based on error.c and error.h,
  20    written by David MacKenzie <djm@gnu.ai.mit.edu>.  */
  21
  22 #include "system.h"
  23
  24 #if HAVE_VPRINTF || HAVE_DOPRNT || _LIBC
  25 # ifdef __STDC__
  26 #  include <stdarg.h>
  27 #  define VA_START(args, lastarg) va_start(args, lastarg)
  28 # else
  29 #  include <varargs.h>
  30 #  define VA_START(args, lastarg) va_start(args)
  31 # endif
  32 #else
  33 # define va_alist a1, a2, a3, a4, a5, a6, a7, a8
  34 # define va_dcl char *a1, *a2, *a3, *a4, *a5, *a6, *a7, *a8;
  35 #endif
  36
  37 #if STDC_HEADERS || _LIBC
  38 # include <stdlib.h>
  39 # include <string.h>
  40 #else
  41 void exit ();
  42 #endif
  43
  44 #include "complain.h"
  45
  46 #ifndef _
  47 # define _(String) String
  48 #endif
  49
  50 #ifdef _LIBC
  51 /* In the GNU C library, there is a predefined variable for this.  */
  52
  53 # define program_name program_invocation_name
  54 # include <errno.h>
  55
  56 /* In GNU libc we want do not want to use the common name `error' directly.
  57    Instead make it a weak alias.  */
  58 # define error __error
  59 # define error_at_line __error_at_line
  60
  61 # ifdef USE_IN_LIBIO
  62 #  include <libio/iolibio.h>
  63 #  define fflush(s) _IO_fflush (s)
  64 # endif
  65
  66 #else /* not _LIBC */
  67
  68 /* The calling program should define program_name and set it to the
  69    name of the executing program.  */
  70 extern char *program_name;
  71
  72 # if HAVE_STRERROR
  73 #  ifndef HAVE_DECL_STRERROR
  74 "this configure-time declaration test was not run"
  75 #  endif
  76 #  if !HAVE_DECL_STRERROR && !defined strerror
  77 char *strerror PARAMS ((int));
  78 #  endif
  79 # else
  80 static char *
  81 private_strerror (errnum)
  82      int errnum;
  83 {
  84   extern char *sys_errlist[];
  85   extern int sys_nerr;
  86
  87   if (errnum > 0 && errnum <= sys_nerr)
  88     return _(sys_errlist[errnum]);
  89   return _("Unknown system error");
  90 }
  91 #  define strerror private_strerror
  92 # endif /* HAVE_STRERROR */
  93 #endif  /* not _LIBC */
  94
  95 /* This variable is incremented each time `warn' is called.  */
  96 unsigned int warn_message_count;
  97
  98 /* This variable is incremented each time `complain' is called.  */
  99 unsigned int complain_message_count;
 100
 101 \f
 102 /*--------------------------------.
 103 | Report a warning, and proceed.  |
 104 `--------------------------------*/
 105
 106 void
 107 #if defined VA_START && defined __STDC__
 108 warn_at (location_t location, const char *message, ...)
 109 #else
 110 warn_at (location, message, va_alist)
 111   location_t location
 112   char *message;
 113   va_dcl
 114 #endif
 115 {
 116 #ifdef VA_START
 117   va_list args;
 118 #endif
 119
 120   fflush (stdout);
 121   LOCATION_PRINT (stderr, location);
 122   fputs (": ", stderr);
 123   fputs (_("warning: "), stderr);
 124
 125 #ifdef VA_START
 126   VA_START (args, message);
 127   vfprintf (stderr, message, args);
 128   va_end (args);
 129 #else
 130   fprintf (stderr, message, a1, a2, a3, a4, a5, a6, a7, a8);
 131 #endif
 132
 133   ++warn_message_count;
 134   putc ('\n', stderr);
 135   fflush (stderr);
 136 }
 137
 138 void
 139 #if defined VA_START && defined __STDC__
 140 warn (const char *message, ...)
 141 #else
 142 warn (message, va_alist)
 143   char *message;
 144   va_dcl
 145 #endif
 146 {
 147 #ifdef VA_START
 148   va_list args;
 149 #endif
 150
 151   fflush (stdout);
 152   fprintf (stderr, "%s: %s", infile ? infile : program_name, _("warning: "));
 153
 154 #ifdef VA_START
 155   VA_START (args, message);
 156   vfprintf (stderr, message, args);
 157   va_end (args);
 158 #else
 159   fprintf (stderr, message, a1, a2, a3, a4, a5, a6, a7, a8);
 160 #endif
 161
 162   ++warn_message_count;
 163   putc ('\n', stderr);
 164   fflush (stderr);
 165 }
 166 \f
 167 /*-----------------------------------------------------------.
 168 | An error has occurred, but we can proceed, and die later.  |
 169 `-----------------------------------------------------------*/
 170
 171 void
 172 #if defined VA_START && defined __STDC__
 173 complain_at (location_t location, const char *message, ...)
 174 #else
 175 complain_at (location, message, va_alist)
 176   location_t location;
 177   char *message;
 178   va_dcl
 179 #endif
 180 {
 181 #ifdef VA_START
 182   va_list args;
 183 #endif
 184
 185   fflush (stdout);
 186   LOCATION_PRINT (stderr, location);
 187   fputs (": ", stderr);
 188
 189 #ifdef VA_START
 190   VA_START (args, message);
 191   vfprintf (stderr, message, args);
 192   va_end (args);
 193 #else
 194   fprintf (stderr, message, a1, a2, a3, a4, a5, a6, a7, a8);
 195 #endif
 196
 197   ++complain_message_count;
 198   putc ('\n', stderr);
 199   fflush (stderr);
 200 }
 201
 202 void
 203 #if defined VA_START && defined __STDC__
 204 complain (const char *message, ...)
 205 #else
 206 complain (message, va_alist)
 207      char *message;
 208      va_dcl
 209 #endif
 210 {
 211 #ifdef VA_START
 212   va_list args;
 213 #endif
 214
 215   fflush (stdout);
 216   fprintf (stderr, "%s: ", infile ? infile : program_name);
 217
 218 #ifdef VA_START
 219   VA_START (args, message);
 220   vfprintf (stderr, message, args);
 221   va_end (args);
 222 #else
 223   fprintf (stderr, message, a1, a2, a3, a4, a5, a6, a7, a8);
 224 #endif
 225
 226   ++complain_message_count;
 227   putc ('\n', stderr);
 228   fflush (stderr);
 229 }
 230 \f
 231 /*-------------------------------------------------.
 232 | A severe error has occurred, we cannot proceed.  |
 233 `-------------------------------------------------*/
 234
 235 void
 236 #if defined VA_START && defined __STDC__
 237 fatal_at (location_t location, const char *message, ...)
 238 #else
 239 fatal_at (location, message, va_alist)
 240   location_t location;
 241   char *message;
 242   va_dcl
 243 #endif
 244 {
 245 #ifdef VA_START
 246   va_list args;
 247 #endif
 248
 249   fflush (stdout);
 250   LOCATION_PRINT (stderr, location);
 251   fputs (": ", stderr);
 252   fputs (_("fatal error: "), stderr);
 253
 254 #ifdef VA_START
 255   VA_START (args, message);
 256   vfprintf (stderr, message, args);
 257   va_end (args);
 258 #else
 259   fprintf (stderr, message, a1, a2, a3, a4, a5, a6, a7, a8);
 260 #endif
 261   putc ('\n', stderr);
 262   fflush (stderr);
 263   exit (1);
 264 }
 265
 266 void
 267 #if defined VA_START && defined __STDC__
 268 fatal (const char *message, ...)
 269 #else
 270 fatal (message, va_alist)
 271      char *message;
 272      va_dcl
 273 #endif
 274 {
 275 #ifdef VA_START
 276   va_list args;
 277 #endif
 278
 279   fflush (stdout);
 280   fprintf (stderr, "%s: ", infile ? infile : program_name);
 281
 282   fputs (_("fatal error: "), stderr);
 283
 284 #ifdef VA_START
 285   VA_START (args, message);
 286   vfprintf (stderr, message, args);
 287   va_end (args);
 288 #else
 289   fprintf (stderr, message, a1, a2, a3, a4, a5, a6, a7, a8);
 290 #endif
 291   putc ('\n', stderr);
 292   fflush (stderr);
 293   exit (1);
 294 }