/* Declaration for error-reporting function for Bison.
- Copyright (C) 2000, 2001, 2002 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.
+ 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 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
- 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 <config.h>
#include "system.h"
#include <stdarg.h>
-#if ! (HAVE_VPRINTF || defined vfprintf)
-# define vfprintf(stream, message, args) _doprnt (message, args, stream)
-#endif
-
-#if STDC_HEADERS || _LIBC
-# include <stdlib.h>
-# include <string.h>
-#endif
+#include <progname.h>
#include "complain.h"
#include "files.h"
+#include "getargs.h"
+
+bool complaint_issued;
+static unsigned *indent_ptr = 0;
-#ifndef _
-# define _(String) String
-#endif
-
-#ifdef _LIBC
-/* In the GNU C library, there is a predefined variable for this. */
-
-# define program_name program_invocation_name
-# include <errno.h>
-
-/* In GNU libc we want do not want to use the common name `error' directly.
- Instead make it a weak alias. */
-# define error __error
-# define error_at_line __error_at_line
-
-# ifdef USE_IN_LIBIO
-# include <libio/iolibio.h>
-# define fflush(s) _IO_fflush (s)
-# endif
-
-#else /* not _LIBC */
-
-/* The calling program should define program_name and set it to the
- name of the executing program. */
-extern char *program_name;
-
-# if HAVE_STRERROR
-# ifndef HAVE_DECL_STRERROR
-"this configure-time declaration test was not run"
-# endif
-# if !HAVE_DECL_STRERROR && !defined strerror
-char *strerror (int);
-# endif
-# else
-static char *
-private_strerror (int errnum)
+\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. 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
+error_message (location *loc,
+ const char *prefix,
+ const char *message, va_list args)
{
- extern char *sys_errlist[];
- extern int sys_nerr;
+ 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);
- if (errnum > 0 && errnum <= sys_nerr)
- return _(sys_errlist[errnum]);
- return _("Unknown system error");
+ vfprintf (stderr, message, args);
+ {
+ size_t l = strlen (message);
+ if (l < 2 || message[l-2] != ':' || message[l-1] != ' ') {
+ putc ('\n', stderr);
+ fflush (stderr);
+ }
+ }
}
-# define strerror private_strerror
-# endif /* HAVE_STRERROR */
-#endif /* not _LIBC */
-/* This variable is set each time `warn' is called. */
-bool warning_issued;
+/** 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); \
+}
-/* This variable is set each time `complain' is called. */
-bool complaint_issued;
-\f
/*--------------------------------.
| Report a warning, and proceed. |
`--------------------------------*/
void
-warn_at (location_t location, const char *message, ...)
+set_warning_issued (void)
{
- va_list args;
-
- fflush (stdout);
- location_print (stderr, location);
- fputs (": ", stderr);
- fputs (_("warning: "), stderr);
+ 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;
+}
- va_start (args, message);
- vfprintf (stderr, message, args);
- va_end (args);
+void
+warn_at (location loc, const char *message, ...)
+{
+ if (!(warnings_flag & warnings_other))
+ return;
+ set_warning_issued ();
+ ERROR_MESSAGE (&loc, _("warning"), message);
+}
- warning_issued = true;
- putc ('\n', stderr);
- fflush (stderr);
+void
+warn_at_indent (location loc, unsigned *indent,
+ const char *message, ...)
+{
+ if (!(warnings_flag & warnings_other))
+ return;
+ set_warning_issued ();
+ indent_ptr = indent;
+ ERROR_MESSAGE (&loc, *indent ? NULL : _("warning"), message);
}
void
warn (const char *message, ...)
{
- va_list args;
-
- fflush (stdout);
- fprintf (stderr, "%s: %s", current_file ? current_file : program_name, _("warning: "));
+ if (!(warnings_flag & warnings_other))
+ return;
+ set_warning_issued ();
+ ERROR_MESSAGE (NULL, _("warning"), message);
+}
- va_start (args, message);
- vfprintf (stderr, message, args);
- va_end (args);
- warning_issued = true;
- putc ('\n', stderr);
- fflush (stderr);
-}
-\f
/*-----------------------------------------------------------.
| An error has occurred, but we can proceed, and die later. |
`-----------------------------------------------------------*/
void
-complain_at (location_t location, const char *message, ...)
+complain_at (location loc, const char *message, ...)
{
- va_list args;
-
- fflush (stdout);
- location_print (stderr, location);
- fputs (": ", stderr);
-
- va_start (args, message);
- vfprintf (stderr, message, args);
- va_end (args);
+ ERROR_MESSAGE (&loc, _("error"), message);
+ complaint_issued = true;
+}
+void
+complain_at_indent (location loc, unsigned *indent,
+ const char *message, ...)
+{
+ indent_ptr = indent;
+ ERROR_MESSAGE (&loc, *indent ? NULL : _("error"), message);
complaint_issued = true;
- putc ('\n', stderr);
- fflush (stderr);
}
void
complain (const char *message, ...)
{
- va_list args;
+ ERROR_MESSAGE (NULL, _("error"), message);
+ complaint_issued = true;
+}
- fflush (stdout);
- 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);
- fflush (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
+
+void
+midrule_value_at (location loc, const char *message, ...)
+{
+ if (!(warnings_flag & warnings_midrule_values))
+ return;
+ set_warning_issued ();
+ ERROR_MESSAGE (&loc, _("warning"), message);
+}
+
/*-------------------------------------------------.
| A severe error has occurred, we cannot proceed. |
`-------------------------------------------------*/
void
-fatal_at (location_t location, const char *message, ...)
+fatal_at (location loc, const char *message, ...)
{
- va_list args;
-
- fflush (stdout);
- location_print (stderr, location);
- fputs (": ", stderr);
- fputs (_("fatal error: "), stderr);
-
- va_start (args, message);
- vfprintf (stderr, message, args);
- va_end (args);
- putc ('\n', stderr);
- fflush (stderr);
+ ERROR_MESSAGE (&loc, _("fatal error"), message);
exit (EXIT_FAILURE);
}
void
fatal (const char *message, ...)
{
- va_list args;
-
- fflush (stdout);
- 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);
- fflush (stderr);
+ ERROR_MESSAGE (NULL, _("fatal error"), message);
exit (EXIT_FAILURE);
}
projects / bison.git / blobdiff