/* Declaration for error-reporting function for Bison.
- Copyright (C) 2000, 2001, 2002, 2004, 2005 Free Software Foundation, Inc.
+ Copyright (C) 2000-2002, 2004-2006, 2009-2012 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 "system.h"
#include <stdarg.h>
+#include <progname.h>
#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;
+warnings warnings_flag = Wconflicts_sr | Wconflicts_rr | Wother;
-/* This variable is set each time `warn' is called. */
-bool warning_issued;
-
-/* This variable is set each time `complain' is called. */
bool complaint_issued;
-
-\f
-/*--------------------------------.
-| Report a warning, and proceed. |
-`--------------------------------*/
+static unsigned *indent_ptr = 0;
void
-warn_at (location loc, const char *message, ...)
+warnings_print_categories (warnings warn_flags)
{
- va_list args;
-
- location_print (stderr, loc);
- fputs (": ", stderr);
- fputs (_("warning: "), stderr);
-
- va_start (args, message);
- vfprintf (stderr, message, args);
- va_end (args);
-
- warning_issued = true;
- putc ('\n', stderr);
+ if (! (warn_flags & silent))
+ {
+ char const *warn_names[] =
+ {
+ "midrule-values",
+ "yacc",
+ "conflicts-sr",
+ "conflicts-rr",
+ "other"
+ };
+
+ bool any = false;
+ int i;
+ for (i = 0; i < ARRAY_CARDINALITY (warn_names); ++i)
+ if (warn_flags & 1 << i)
+ {
+ fprintf (stderr, "%s-W%s", any ? ", " : " [", warn_names[i]);
+ any = true;
+ }
+ if (any)
+ fprintf (stderr, "]");
+ }
}
+/** Report an error message.
+ *
+ * \param loc the location, defaulting to the current file,
+ * or the program name.
+ * \param flags the category for this message.
+ * \param prefix put before the message (e.g., "warning").
+ * \param message the error message, a printf format string. Iff it
+ * ends with ": ", then no trailing newline is printed,
+ * and the caller should print the remaining
+ * newline-terminated message to stderr.
+ * \param args the arguments of the format string.
+ */
+static
void
-warn (const char *message, ...)
+error_message (const location *loc, warnings flags, const char *prefix,
+ const char *message, va_list args)
{
- va_list args;
-
- fprintf (stderr, "%s: %s", current_file ? current_file : program_name, _("warning: "));
+ (void) flags;
+ 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);
- va_start (args, message);
vfprintf (stderr, message, args);
- va_end (args);
+ warnings_print_categories (flags);
+ {
+ size_t l = strlen (message);
+ if (l < 2 || message[l-2] != ':' || message[l-1] != ' ')
+ {
+ putc ('\n', stderr);
+ fflush (stderr);
+ }
+ }
+}
- warning_issued = true;
- putc ('\n', stderr);
+/** Raise a complaint. That can be a fatal error, a complaint or just a
+ warning. */
+
+static inline void
+complains (const location *loc, warnings flags, const char *message,
+ va_list args)
+{
+ if (flags & complaint)
+ {
+ error_message (loc, complaint, NULL, message, args);
+ complaint_issued = true;
+ }
+ else if (flags & fatal)
+ {
+ error_message (loc, fatal, _("fatal error"), message, args);
+ exit (EXIT_FAILURE);
+ }
+ else if (flags & Wyacc)
+ {
+ if (yacc_flag)
+ {
+ error_message (loc, flags, NULL, message, args);
+ complaint_issued = true;
+ }
+ else if (warnings_flag & Wyacc)
+ {
+ set_warning_issued ();
+ error_message (loc, flags, _("warning"), message, args);
+ }
+ }
+ else if (warnings_flag & flags)
+ {
+ set_warning_issued ();
+ error_message (loc, flags, _("warning"), message, args);
+ }
}
-\f
-/*-----------------------------------------------------------.
-| An error has occurred, but we can proceed, and die later. |
-`-----------------------------------------------------------*/
void
-complain_at (location loc, const char *message, ...)
+complain (warnings flags, const char *message, ...)
{
va_list args;
-
- location_print (stderr, loc);
- fputs (": ", stderr);
-
va_start (args, message);
- vfprintf (stderr, message, args);
+ complains (NULL, flags, message, args);
va_end (args);
-
- complaint_issued = true;
- putc ('\n', stderr);
}
void
-complain (const char *message, ...)
+complain_at (location loc, warnings flags, const char *message, ...)
{
va_list args;
-
- fprintf (stderr, "%s: ", current_file ? current_file : program_name);
-
va_start (args, message);
- vfprintf (stderr, message, args);
+ complains (&loc, flags, message, args);
va_end (args);
-
- complaint_issued = true;
- putc ('\n', stderr);
}
-\f
-/*-------------------------------------------------.
-| A severe error has occurred, we cannot proceed. |
-`-------------------------------------------------*/
-void
-fatal_at (location loc, const char *message, ...)
+void complain_at_indent (location loc, warnings flags, unsigned *indent,
+ const char *message, ...)
{
- va_list args;
-
- location_print (stderr, loc);
- fputs (": ", stderr);
- fputs (_("fatal error: "), stderr);
+ indent_ptr = indent;
+ va_list args;
va_start (args, message);
- vfprintf (stderr, message, args);
+ complains (&loc, flags, message, args);
va_end (args);
- putc ('\n', stderr);
- exit (EXIT_FAILURE);
}
+/*--------------------------------.
+| Report a warning, and proceed. |
+`--------------------------------*/
+
void
-fatal (const char *message, ...)
+set_warning_issued (void)
{
- 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);
- exit (EXIT_FAILURE);
+ static bool warning_issued = false;
+ if (!warning_issued && (warnings_flag & Werror))
+ {
+ fprintf (stderr, "%s: warnings being treated as errors\n", program_name);
+ complaint_issued = true;
+ }
+ warning_issued = true;
}
projects / bison.git / blobdiff