/* Declaration for error-reporting function for Bison.
- Copyright (C) 2000, 2001, 2002, 2004, 2005 Free Software Foundation, Inc.
+ Copyright (C) 2000-2002, 2004-2006, 2009-2010 Free Software
+ Foundation, Inc.
- 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 2, or (at your option) any
- later version.
+ 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 of the License, 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
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
- USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
/* Based on error.c and error.h,
written by David MacKenzie <djm@gnu.ai.mit.edu>. */
#include "complain.h"
#include "files.h"
+#include "getargs.h"
-/* The calling program should define program_name and set it to the
- name of the executing program. */
-extern char *program_name;
-
-/* This variable is set each time `warn' is called. */
-bool warning_issued;
-
-/* This variable is set each time `complain' is called. */
bool complaint_issued;
+static unsigned *indent_ptr = 0;
\f
+
+/** Report an error message.
+ *
+ * \param loc the location, defaulting to the current file,
+ * or the program name.
+ * \param prefix put before the message (e.g., "warning").
+ * \param message the error message, a printf format string.
+ * \param args the arguments of the format string.
+ */
+static
+void
+error_message (location *loc,
+ const char *prefix,
+ const char *message, va_list args)
+{
+ unsigned pos = 0;
+
+ if (loc)
+ pos += location_print (stderr, *loc);
+ else
+ pos += fprintf(stderr, "%s", current_file ? current_file : program_name);
+ pos += fprintf(stderr, ": ");
+
+ if (indent_ptr)
+ {
+ if (!*indent_ptr)
+ *indent_ptr = pos;
+ else if (*indent_ptr > pos)
+ fprintf (stderr, "%*s", *indent_ptr - pos, "");
+ indent_ptr = 0;
+ }
+
+ if (prefix)
+ fprintf (stderr, "%s: ", prefix);
+
+ vfprintf (stderr, message, args);
+ putc ('\n', stderr);
+ fflush (stderr);
+}
+
+/** Wrap error_message() with varargs handling. */
+#define ERROR_MESSAGE(Loc, Prefix, Message) \
+{ \
+ va_list args; \
+ va_start (args, Message); \
+ error_message (Loc, Prefix, Message, args); \
+ va_end (args); \
+}
+
+
/*--------------------------------.
| Report a warning, and proceed. |
`--------------------------------*/
+static void
+set_warning_issued (void)
+{
+ static bool warning_issued = false;
+ if (!warning_issued && (warnings_flag & warnings_error))
+ {
+ fprintf (stderr, "%s: warnings being treated as errors\n", program_name);
+ complaint_issued = true;
+ }
+ warning_issued = true;
+}
+
void
warn_at (location loc, const char *message, ...)
{
- va_list args;
-
- location_print (stderr, loc);
- fputs (": ", stderr);
- fputs (_("warning: "), stderr);
-
- va_start (args, message);
- vfprintf (stderr, message, args);
- va_end (args);
+ set_warning_issued ();
+ ERROR_MESSAGE (&loc, _("warning"), message);
+}
- warning_issued = true;
- putc ('\n', stderr);
+void
+warn_at_indent (location loc, unsigned *indent,
+ const char *message, ...)
+{
+ set_warning_issued ();
+ indent_ptr = indent;
+ ERROR_MESSAGE (&loc, _("warning"), message);
}
void
warn (const char *message, ...)
{
- va_list args;
+ set_warning_issued ();
+ ERROR_MESSAGE (NULL, _("warning"), message);
+}
- fprintf (stderr, "%s: %s", current_file ? current_file : program_name, _("warning: "));
- va_start (args, message);
- vfprintf (stderr, message, args);
- va_end (args);
-
- warning_issued = true;
- putc ('\n', stderr);
-}
-\f
/*-----------------------------------------------------------.
| An error has occurred, but we can proceed, and die later. |
`-----------------------------------------------------------*/
void
complain_at (location loc, const char *message, ...)
{
- va_list args;
-
- location_print (stderr, loc);
- fputs (": ", stderr);
-
- va_start (args, message);
- vfprintf (stderr, message, args);
- va_end (args);
+ ERROR_MESSAGE (&loc, NULL, message);
+ complaint_issued = true;
+}
+void
+complain_at_indent (location loc, unsigned *indent,
+ const char *message, ...)
+{
+ indent_ptr = indent;
+ ERROR_MESSAGE (&loc, NULL, message);
complaint_issued = true;
- putc ('\n', stderr);
}
void
complain (const char *message, ...)
{
- va_list args;
+ ERROR_MESSAGE (NULL, NULL, message);
+ complaint_issued = true;
+}
- fprintf (stderr, "%s: ", current_file ? current_file : program_name);
- va_start (args, message);
- vfprintf (stderr, message, args);
- va_end (args);
+/*--------------------------------------------------------------.
+| An incompatibility with POSIX Yacc: mapped either to warn* or |
+| complain* depending on yacc_flag. |
+`--------------------------------------------------------------*/
- complaint_issued = true;
- putc ('\n', stderr);
+void
+yacc_at (location loc, const char *message, ...)
+{
+ if (yacc_flag)
+ {
+ ERROR_MESSAGE (&loc, NULL, message);
+ complaint_issued = true;
+ }
+ else if (warnings_flag & warnings_yacc)
+ {
+ set_warning_issued ();
+ ERROR_MESSAGE (&loc, _("warning"), message);
+ }
}
-\f
+
+
/*-------------------------------------------------.
| A severe error has occurred, we cannot proceed. |
`-------------------------------------------------*/
void
fatal_at (location loc, const char *message, ...)
{
- va_list args;
-
- location_print (stderr, loc);
- fputs (": ", stderr);
- fputs (_("fatal error: "), stderr);
-
- va_start (args, message);
- vfprintf (stderr, message, args);
- va_end (args);
- putc ('\n', stderr);
+ ERROR_MESSAGE (&loc, _("fatal error"), message);
exit (EXIT_FAILURE);
}
void
fatal (const char *message, ...)
{
- va_list args;
-
- fprintf (stderr, "%s: ", current_file ? current_file : program_name);
-
- fputs (_("fatal error: "), stderr);
-
- va_start (args, message);
- vfprintf (stderr, message, args);
- va_end (args);
- putc ('\n', stderr);
+ ERROR_MESSAGE (NULL, _("fatal error"), message);
exit (EXIT_FAILURE);
}
projects / bison.git / blobdiff