178 lines
4.8 KiB
C
178 lines
4.8 KiB
C
/* Default error handlers for CPP Library.
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Copyright (C) 1986, 1987, 1989, 1992, 1993, 1994, 1995, 1998, 1999, 2000,
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2001, 2002 Free Software Foundation, Inc.
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Written by Per Bothner, 1994.
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Based on CCCP program by Paul Rubin, June 1986
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Adapted to ANSI C, Richard Stallman, Jan 1987
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This program is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the
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Free Software Foundation; either version 2, or (at your option) any
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later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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In other words, you are welcome to use, share and improve this program.
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You are forbidden to forbid anyone else to use, share and improve
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what you give them. Help stamp out software-hoarding! */
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#include "config.h"
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#include "system.h"
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#include "cpplib.h"
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#include "cpphash.h"
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#include "intl.h"
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static void print_location (cpp_reader *, fileline, unsigned int);
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/* Print the logical file location (LINE, COL) in preparation for a
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diagnostic. Outputs the #include chain if it has changed. A line
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of zero suppresses the include stack, and outputs the program name
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instead. */
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static void
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print_location (cpp_reader *pfile, fileline line, unsigned int col)
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{
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if (line == 0)
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fprintf (stderr, "%s: ", progname);
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else
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{
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const struct line_map *map;
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unsigned int lin;
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map = linemap_lookup (&pfile->line_maps, line);
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linemap_print_containing_files (&pfile->line_maps, map);
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lin = SOURCE_LINE (map, line);
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if (col == 0)
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col = 1;
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if (lin == 0)
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fprintf (stderr, "%s:", map->to_file);
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else if (CPP_OPTION (pfile, show_column) == 0)
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fprintf (stderr, "%s:%u:", map->to_file, lin);
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else
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fprintf (stderr, "%s:%u:%u:", map->to_file, lin, col);
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fputc (' ', stderr);
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}
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}
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/* Set up for a diagnostic: print the file and line, bump the error
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counter, etc. LINE is the logical line number; zero means to print
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at the location of the previously lexed token, which tends to be
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the correct place by default. Returns 0 if the error has been
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suppressed. */
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int
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_cpp_begin_message (cpp_reader *pfile, int code, fileline line,
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unsigned int column)
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{
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int level = CPP_DL_EXTRACT (code);
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switch (level)
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{
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case CPP_DL_WARNING:
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case CPP_DL_PEDWARN:
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if (CPP_IN_SYSTEM_HEADER (pfile)
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&& ! CPP_OPTION (pfile, warn_system_headers))
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return 0;
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/* Fall through. */
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case CPP_DL_WARNING_SYSHDR:
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if (CPP_OPTION (pfile, warnings_are_errors)
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|| (level == CPP_DL_PEDWARN && CPP_OPTION (pfile, pedantic_errors)))
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{
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if (CPP_OPTION (pfile, inhibit_errors))
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return 0;
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level = CPP_DL_ERROR;
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pfile->errors++;
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}
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else if (CPP_OPTION (pfile, inhibit_warnings))
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return 0;
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break;
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case CPP_DL_ERROR:
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if (CPP_OPTION (pfile, inhibit_errors))
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return 0;
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/* ICEs cannot be inhibited. */
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case CPP_DL_ICE:
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pfile->errors++;
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break;
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}
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print_location (pfile, line, column);
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if (CPP_DL_WARNING_P (level))
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fputs (_("warning: "), stderr);
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else if (level == CPP_DL_ICE)
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fputs (_("internal error: "), stderr);
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return 1;
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}
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/* Don't remove the blank before do, as otherwise the exgettext
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script will mistake this as a function definition */
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#define v_message(msgid, ap) \
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do { vfprintf (stderr, _(msgid), ap); putc ('\n', stderr); } while (0)
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/* Exported interface. */
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/* Print an error at the location of the previously lexed token. */
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void
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cpp_error (cpp_reader * pfile, int level, const char *msgid, ...)
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{
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fileline line;
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unsigned int column;
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va_list ap;
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va_start (ap, msgid);
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if (CPP_OPTION (pfile, traditional))
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{
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if (pfile->state.in_directive)
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line = pfile->directive_line;
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else
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line = pfile->line;
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column = 0;
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}
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else
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{
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line = pfile->cur_token[-1].line;
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column = pfile->cur_token[-1].col;
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}
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if (_cpp_begin_message (pfile, level, line, column))
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v_message (msgid, ap);
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va_end (ap);
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}
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/* Print an error at a specific location. */
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void
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cpp_error_with_line (cpp_reader *pfile, int level,
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fileline line, unsigned int column,
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const char *msgid, ...)
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{
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va_list ap;
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va_start (ap, msgid);
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if (_cpp_begin_message (pfile, level, line, column))
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v_message (msgid, ap);
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va_end (ap);
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}
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void
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cpp_errno (cpp_reader *pfile, int level, const char *msgid)
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{
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if (msgid[0] == '\0')
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msgid = _("stdout");
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cpp_error (pfile, level, "%s: %s", msgid, xstrerror (errno));
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}
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