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/* Default error handlers for CPP Library.

   Copyright (C) 1986, 1987, 1989, 1992, 1993, 1994, 1995, 1998, 1999, 2000,

   2001, 2002, 2004, 2008, 2009, 2010 Free Software Foundation, Inc.

   Written by Per Bothner, 1994.

   Based on CCCP program by Paul Rubin, June 1986

   Adapted to ANSI C, Richard Stallman, Jan 1987

This program is free software; you can redistribute it and/or modify it

under the terms of the GNU General Public License as published by the

Free Software Foundation; either version 3, or (at your option) any

later version.

This program is distributed in the hope that it will be useful,

but WITHOUT ANY WARRANTY; without even the implied warranty of

MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

GNU General Public License for more details.

You should have received a copy of the GNU General Public License

along with this program; see the file COPYING3.  If not see

<http://www.gnu.org/licenses/>.

 In other words, you are welcome to use, share and improve this program.

 You are forbidden to forbid anyone else to use, share and improve

 what you give them.   Help stamp out software-hoarding!  */

#include "config.h"

#include "system.h"

#include "cpplib.h"

#include "internal.h"

/* Print a diagnostic at the location of the previously lexed token.  */

ATTRIBUTE_FPTR_PRINTF(4,0)

static bool

cpp_diagnostic (cpp_reader * pfile, int level, int reason,

                const char *msgid, va_list *ap)

{

  source_location src_loc;

  bool ret;

  if (CPP_OPTION (pfile, traditional))

    {

      if (pfile->state.in_directive)

        src_loc = pfile->directive_line;

      else

        src_loc = pfile->line_table->highest_line;

    }

  /* We don't want to refer to a token before the beginning of the

     current run -- that is invalid.  */

  else if (pfile->cur_token == pfile->cur_run->base)

    {

      if (pfile->cur_run->prev != NULL)

        src_loc = pfile->cur_run->prev->limit->src_loc;

      else

        src_loc = 0;

    }

  else

    {

      src_loc = pfile->cur_token[-1].src_loc;

    }

  if (!pfile->cb.error)

    abort ();

  ret = pfile->cb.error (pfile, level, reason, src_loc, 0, _(msgid), ap);

  return ret;

}

/* Print a warning or error, depending on the value of LEVEL.  */

bool

cpp_error (cpp_reader * pfile, int level, const char *msgid, ...)

{

  va_list ap;

  bool ret;

  va_start (ap, msgid);

  ret = cpp_diagnostic (pfile, level, CPP_W_NONE, msgid, &ap);

  va_end (ap);

  return ret;

}

/* Print a warning.  The warning reason may be given in REASON.  */

bool

cpp_warning (cpp_reader * pfile, int reason, const char *msgid, ...)

{

  va_list ap;

  bool ret;

  va_start (ap, msgid);

  ret = cpp_diagnostic (pfile, CPP_DL_WARNING, reason, msgid, &ap);

  va_end (ap);

  return ret;

}

/* Print a pedantic warning.  The warning reason may be given in REASON.  */

bool

cpp_pedwarning (cpp_reader * pfile, int reason, const char *msgid, ...)

{

  va_list ap;

  bool ret;

  va_start (ap, msgid);

  ret = cpp_diagnostic (pfile, CPP_DL_PEDWARN, reason, msgid, &ap);

  va_end (ap);

  return ret;

}

/* Print a warning, including system headers.  The warning reason may be

   given in REASON.  */

bool

cpp_warning_syshdr (cpp_reader * pfile, int reason, const char *msgid, ...)

{

  va_list ap;

  bool ret;

  va_start (ap, msgid);

  ret = cpp_diagnostic (pfile, CPP_DL_WARNING_SYSHDR, reason, msgid, &ap);

  va_end (ap);

  return ret;

}

/* Print a diagnostic at a specific location.  */

ATTRIBUTE_FPTR_PRINTF(6,0)

static bool

cpp_diagnostic_with_line (cpp_reader * pfile, int level, int reason,

                          source_location src_loc, unsigned int column,

                          const char *msgid, va_list *ap)

{

  bool ret;

  if (!pfile->cb.error)

    abort ();

  ret = pfile->cb.error (pfile, level, reason, src_loc, column, _(msgid), ap);

  return ret;

}

/* Print a warning or error, depending on the value of LEVEL.  */

bool

cpp_error_with_line (cpp_reader *pfile, int level,

                     source_location src_loc, unsigned int column,

                     const char *msgid, ...)

{

  va_list ap;

  bool ret;

  va_start (ap, msgid);

  ret = cpp_diagnostic_with_line (pfile, level, CPP_W_NONE, src_loc,

                                  column, msgid, &ap);

  va_end (ap);

  return ret;

}

/* Print a warning.  The warning reason may be given in REASON.  */

bool

cpp_warning_with_line (cpp_reader *pfile, int reason,

                       source_location src_loc, unsigned int column,

                       const char *msgid, ...)

{

  va_list ap;

  bool ret;

  va_start (ap, msgid);

  ret = cpp_diagnostic_with_line (pfile, CPP_DL_WARNING, reason, src_loc,

                                  column, msgid, &ap);

  va_end (ap);

  return ret;

}

/* Print a pedantic warning.  The warning reason may be given in REASON.  */

bool

cpp_pedwarning_with_line (cpp_reader *pfile, int reason,

                          source_location src_loc, unsigned int column,

                          const char *msgid, ...)

{

  va_list ap;

  bool ret;

  va_start (ap, msgid);

  ret = cpp_diagnostic_with_line (pfile, CPP_DL_PEDWARN, reason, src_loc,

                                  column, msgid, &ap);

  va_end (ap);

  return ret;

}

/* Print a warning, including system headers.  The warning reason may be

   given in REASON.  */

bool

cpp_warning_with_line_syshdr (cpp_reader *pfile, int reason,

                              source_location src_loc, unsigned int column,

                              const char *msgid, ...)

{

  va_list ap;

  bool ret;

  va_start (ap, msgid);

  ret = cpp_diagnostic_with_line (pfile, CPP_DL_WARNING_SYSHDR, reason, src_loc,

                                  column, msgid, &ap);

  va_end (ap);

  return ret;

}

/* Print a warning or error, depending on the value of LEVEL.  Include

   information from errno.  */

bool

cpp_errno (cpp_reader *pfile, int level, const char *msgid)

{

  if (msgid[0] == '\0')

    msgid = _("stdout");

  return cpp_error (pfile, level, "%s: %s", msgid, xstrerror (errno));

}