301 lines
7.2 KiB
C
301 lines
7.2 KiB
C
/* Default error handlers for CPP Library.
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Copyright (C) 1986-2018 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 3, 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; see the file COPYING3. If not see
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<http://www.gnu.org/licenses/>.
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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 "internal.h"
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/* Print a diagnostic at the given location. */
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ATTRIBUTE_FPTR_PRINTF(5,0)
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static bool
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cpp_diagnostic_at (cpp_reader * pfile, int level, int reason,
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rich_location *richloc,
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const char *msgid, va_list *ap)
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{
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bool ret;
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if (!pfile->cb.error)
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abort ();
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ret = pfile->cb.error (pfile, level, reason, richloc, _(msgid), ap);
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return ret;
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}
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/* Print a diagnostic at the location of the previously lexed token. */
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ATTRIBUTE_FPTR_PRINTF(4,0)
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static bool
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cpp_diagnostic (cpp_reader * pfile, int level, int reason,
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const char *msgid, va_list *ap)
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{
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source_location src_loc;
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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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src_loc = pfile->directive_line;
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else
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src_loc = pfile->line_table->highest_line;
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}
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/* We don't want to refer to a token before the beginning of the
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current run -- that is invalid. */
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else if (pfile->cur_token == pfile->cur_run->base)
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{
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src_loc = 0;
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}
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else
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{
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src_loc = pfile->cur_token[-1].src_loc;
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}
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rich_location richloc (pfile->line_table, src_loc);
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return cpp_diagnostic_at (pfile, level, reason, &richloc, msgid, ap);
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}
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/* Print a warning or error, depending on the value of LEVEL. */
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bool
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cpp_error (cpp_reader * pfile, int level, const char *msgid, ...)
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{
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va_list ap;
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bool ret;
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va_start (ap, msgid);
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ret = cpp_diagnostic (pfile, level, CPP_W_NONE, msgid, &ap);
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va_end (ap);
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return ret;
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}
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/* Print a warning. The warning reason may be given in REASON. */
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bool
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cpp_warning (cpp_reader * pfile, int reason, const char *msgid, ...)
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{
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va_list ap;
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bool ret;
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va_start (ap, msgid);
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ret = cpp_diagnostic (pfile, CPP_DL_WARNING, reason, msgid, &ap);
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va_end (ap);
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return ret;
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}
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/* Print a pedantic warning. The warning reason may be given in REASON. */
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bool
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cpp_pedwarning (cpp_reader * pfile, int reason, const char *msgid, ...)
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{
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va_list ap;
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bool ret;
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va_start (ap, msgid);
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ret = cpp_diagnostic (pfile, CPP_DL_PEDWARN, reason, msgid, &ap);
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va_end (ap);
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return ret;
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}
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/* Print a warning, including system headers. The warning reason may be
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given in REASON. */
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bool
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cpp_warning_syshdr (cpp_reader * pfile, int reason, const char *msgid, ...)
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{
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va_list ap;
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bool ret;
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va_start (ap, msgid);
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ret = cpp_diagnostic (pfile, CPP_DL_WARNING_SYSHDR, reason, msgid, &ap);
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va_end (ap);
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return ret;
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}
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/* Print a diagnostic at a specific location. */
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ATTRIBUTE_FPTR_PRINTF(6,0)
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static bool
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cpp_diagnostic_with_line (cpp_reader * pfile, int level, int reason,
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source_location src_loc, unsigned int column,
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const char *msgid, va_list *ap)
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{
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bool ret;
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if (!pfile->cb.error)
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abort ();
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rich_location richloc (pfile->line_table, src_loc);
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if (column)
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richloc.override_column (column);
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ret = pfile->cb.error (pfile, level, reason, &richloc, _(msgid), ap);
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return ret;
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}
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/* Print a warning or error, depending on the value of LEVEL. */
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bool
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cpp_error_with_line (cpp_reader *pfile, int level,
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source_location src_loc, 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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bool ret;
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va_start (ap, msgid);
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ret = cpp_diagnostic_with_line (pfile, level, CPP_W_NONE, src_loc,
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column, msgid, &ap);
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va_end (ap);
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return ret;
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}
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/* Print a warning. The warning reason may be given in REASON. */
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bool
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cpp_warning_with_line (cpp_reader *pfile, int reason,
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source_location src_loc, 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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bool ret;
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va_start (ap, msgid);
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ret = cpp_diagnostic_with_line (pfile, CPP_DL_WARNING, reason, src_loc,
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column, msgid, &ap);
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va_end (ap);
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return ret;
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}
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/* Print a pedantic warning. The warning reason may be given in REASON. */
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bool
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cpp_pedwarning_with_line (cpp_reader *pfile, int reason,
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source_location src_loc, 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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bool ret;
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va_start (ap, msgid);
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ret = cpp_diagnostic_with_line (pfile, CPP_DL_PEDWARN, reason, src_loc,
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column, msgid, &ap);
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va_end (ap);
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return ret;
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}
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/* Print a warning, including system headers. The warning reason may be
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given in REASON. */
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bool
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cpp_warning_with_line_syshdr (cpp_reader *pfile, int reason,
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source_location src_loc, 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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bool ret;
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va_start (ap, msgid);
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ret = cpp_diagnostic_with_line (pfile, CPP_DL_WARNING_SYSHDR, reason, src_loc,
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column, msgid, &ap);
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va_end (ap);
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return ret;
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}
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/* As cpp_error, but use SRC_LOC as the location of the error, without
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a column override. */
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bool
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cpp_error_at (cpp_reader * pfile, int level, source_location src_loc,
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const char *msgid, ...)
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{
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va_list ap;
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bool ret;
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va_start (ap, msgid);
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rich_location richloc (pfile->line_table, src_loc);
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ret = cpp_diagnostic_at (pfile, level, CPP_W_NONE, &richloc,
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msgid, &ap);
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va_end (ap);
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return ret;
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}
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/* As cpp_error, but use RICHLOC as the location of the error, without
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a column override. */
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bool
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cpp_error_at (cpp_reader * pfile, int level, rich_location *richloc,
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const char *msgid, ...)
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{
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va_list ap;
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bool ret;
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va_start (ap, msgid);
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ret = cpp_diagnostic_at (pfile, level, CPP_W_NONE, richloc,
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msgid, &ap);
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va_end (ap);
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return ret;
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}
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/* Print a warning or error, depending on the value of LEVEL. Include
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information from errno. */
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bool
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cpp_errno (cpp_reader *pfile, int level, const char *msgid)
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{
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return cpp_error (pfile, level, "%s: %s", _(msgid), xstrerror (errno));
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}
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/* Print a warning or error, depending on the value of LEVEL. Include
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information from errno. Unlike cpp_errno, the argument is a filename
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that is not localized, but "" is replaced with localized "stdout". */
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bool
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cpp_errno_filename (cpp_reader *pfile, int level, const char *filename,
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source_location loc)
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{
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if (filename[0] == '\0')
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filename = _("stdout");
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return cpp_error_at (pfile, level, loc, "%s: %s", filename,
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xstrerror (errno));
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}
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