gcc/cpperror.c

   1 /* Default error handlers for CPP Library.
   2    Copyright (C) 1986, 87, 89, 92-95, 1998 Free Software Foundation, Inc.
   3    Written by Per Bothner, 1994.
   4    Based on CCCP program by by Paul Rubin, June 1986
   5    Adapted to ANSI C, Richard Stallman, Jan 1987
   6
   7 This program is free software; you can redistribute it and/or modify it
   8 under the terms of the GNU General Public License as published by the
   9 Free Software Foundation; either version 2, or (at your option) any
  10 later version.
  11
  12 This program is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with this program; if not, write to the Free Software
  19 Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  20
  21  In other words, you are welcome to use, share and improve this program.
  22  You are forbidden to forbid anyone else to use, share and improve
  23  what you give them.   Help stamp out software-hoarding!  */
  24
  25 #ifndef EMACS
  26 #include "config.h"
  27 #endif /* not EMACS */
  28
  29 #ifdef IN_GCC
  30 #include "system.h"
  31 #else
  32 #include <stdio.h>
  33 #include <errno.h>
  34 #endif
  35
  36 #include "cpplib.h"
  37 #include "intl.h"
  38
  39 /* Print the file names and line numbers of the #include
  40    commands which led to the current file.  */
  41
  42 void
  43 cpp_print_containing_files (pfile)
  44      cpp_reader *pfile;
  45 {
  46   cpp_buffer *ip;
  47   int i;
  48   int first = 1;
  49
  50   /* If stack of files hasn't changed since we last printed
  51      this info, don't repeat it.  */
  52   if (pfile->input_stack_listing_current)
  53     return;
  54
  55   ip = cpp_file_buffer (pfile);
  56
  57   /* Give up if we don't find a source file.  */
  58   if (ip == NULL)
  59     return;
  60
  61   /* Find the other, outer source files.  */
  62   while ((ip = CPP_PREV_BUFFER (ip)), ip != CPP_NULL_BUFFER (pfile))
  63     {
  64       long line, col;
  65       cpp_buf_line_and_col (ip, &line, &col);
  66       if (ip->fname != NULL)
  67         {
  68           if (first)
  69             {
  70               first = 0;
  71               cpp_notice ("In file included from ");
  72             }
  73           else
  74             cpp_notice (",\n                 from ");
  75         }
  76
  77       fprintf (stderr, "%s:%d", ip->nominal_fname, line);
  78     }
  79   if (! first)
  80     fprintf (stderr, ":\n");
  81
  82   /* Record we have printed the status as of this time.  */
  83   pfile->input_stack_listing_current = 1;
  84 }
  85
  86 void
  87 cpp_file_line_for_message (pfile, filename, line, column)
  88      cpp_reader *pfile;
  89      char *filename;
  90      int line, column;
  91 {
  92   if (column > 0)
  93     fprintf (stderr, "%s:%d:%d: ", filename, line, column);
  94   else
  95     fprintf (stderr, "%s:%d: ", filename, line);
  96 }
  97
  98 /* IS_ERROR is 2 for "fatal" error, 1 for error, 0 for warning, -1 for notice */
  99
 100 void
 101 cpp_message (pfile, is_error, format, arg1, arg2, arg3)
 102      int is_error;
 103      cpp_reader *pfile;
 104      char *format;
 105      char *arg1, *arg2, *arg3;
 106 {
 107   switch (is_error)
 108     {
 109     case -1:
 110       break;
 111     case 0:
 112       fprintf (stderr, _("warning: "));
 113       break;
 114     case 1:
 115       if (pfile->errors < CPP_FATAL_LIMIT)
 116         pfile->errors++;
 117       break;
 118     case 2:
 119       pfile->errors = CPP_FATAL_LIMIT;
 120       break;
 121     default:
 122       abort ();
 123     }
 124
 125   fprintf (stderr, format, arg1, arg2, arg3);
 126
 127   if (0 <= is_error)
 128     fprintf (stderr, "\n");
 129 }
 130
 131 /* Same as cpp_error, except we consider the error to be "fatal",
 132    such as inconsistent options.  I.e. there is little point in continuing.
 133    (We do not exit, to support use of cpplib as a library.
 134    Instead, it is the caller's responsibility to check
 135    CPP_FATAL_ERRORS.  */
 136
 137 void
 138 cpp_fatal (pfile, msgid, arg)
 139      cpp_reader *pfile;
 140      char *msgid, *arg;
 141 {
 142   fprintf (stderr, "%s: ", progname);
 143   cpp_message (pfile, 2, _(msgid), arg);
 144 }
 145 \f
 146 void
 147 cpp_pfatal_with_name (pfile, name)
 148      cpp_reader *pfile;
 149      char *name;
 150 {
 151   cpp_perror_with_name (pfile, name);
 152 #ifdef VMS
 153   exit (vaxc$errno);
 154 #else
 155   exit (FATAL_EXIT_CODE);
 156 #endif
 157 }