/* Declaration for error-reporting function for Bison.
- Copyright 2000 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, 2001, 2002, 2004, 2005, 2006
+ 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>. */
-#ifdef HAVE_CONFIG_H
-# include <config.h>
-#endif
-
-#include <stdio.h>
-
-#if HAVE_VPRINTF || HAVE_DOPRNT || _LIBC
-# if __STDC__
-# include <stdarg.h>
-# define VA_START(args, lastarg) va_start(args, lastarg)
-# else
-# include <varargs.h>
-# define VA_START(args, lastarg) va_start(args)
-# endif
-#else
-# define va_alist a1, a2, a3, a4, a5, a6, a7, a8
-# define va_dcl char *a1, *a2, *a3, *a4, *a5, *a6, *a7, *a8;
-#endif
+#include <config.h>
+#include "system.h"
-#if STDC_HEADERS || _LIBC
-# include <stdlib.h>
-# include <string.h>
-#else
-void exit ();
-#endif
+#include <stdarg.h>
#include "complain.h"
+#include "files.h"
+#include "getargs.h"
-#ifndef HAVE_DECL_STRERROR_R
-"this configure-time declaration test was not run"
-#endif
-#if !HAVE_DECL_STRERROR_R
-char *strerror_r ();
-#endif
-
-#ifndef _
-# define _(String) String
-#endif
-
-#ifdef _LIBC
-/* In the GNU C library, there is a predefined variable for this. */
+bool complaint_issued;
-# 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;
+\f
-# ifdef HAVE_STRERROR_R
-# define __strerror_r strerror_r
-# else
-# if HAVE_STRERROR
-# ifndef strerror /* On some systems, strerror is a macro */
-char *strerror ();
-# endif
-# else
-static char *
-private_strerror (errnum)
- int errnum;
+/** 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)
{
- extern char *sys_errlist[];
- extern int sys_nerr;
+ if (loc)
+ location_print (stderr, *loc);
+ else
+ fputs (current_file ? current_file : program_name, stderr);
+ fputs (": ", stderr);
+
+ if (prefix)
+ fprintf (stderr, "%s: ", prefix);
- if (errnum > 0 && errnum <= sys_nerr)
- return _(sys_errlist[errnum]);
- return _("Unknown system error");
+ vfprintf (stderr, message, args);
+ va_end (args);
+ putc ('\n', stderr);
+ fflush (stderr);
}
-# define strerror private_strerror
-# endif /* HAVE_STRERROR */
-# endif /* HAVE_STRERROR_R */
-#endif /* not _LIBC */
-/* This variable is incremented each time `warn' is called. */
-unsigned int warn_message_count;
+/** 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); \
+}
-/* This variable is incremented each time `complain' is called. */
-unsigned int complain_message_count;
-/* Sometimes we want to have at most one error per line. This
- variable controls whether this mode is selected or not. */
-int error_one_per_line;
-\f
/*--------------------------------.
| Report a warning, and proceed. |
`--------------------------------*/
-void
-#if defined VA_START && __STDC__
-warn (const char *message, ...)
-#else
-warn (message, va_alist)
- char *message;
- va_dcl
-#endif
+static void
+set_warning_issued (void)
{
-#ifdef VA_START
- va_list args;
-#endif
-
- if (error_one_per_line)
+ static bool warning_issued = false;
+ if (!warning_issued && (warnings_flag & warnings_error))
{
- static const char *old_infile;
- static int old_lineno;
-
- if (old_lineno == lineno &&
- (infile == old_infile || !strcmp (old_infile, infile)))
- /* Simply return and print nothing. */
- return;
-
- old_infile = infile;
- old_lineno = lineno;
+ fprintf (stderr, "%s: warnings being treated as errors\n", program_name);
+ complaint_issued = true;
}
+ warning_issued = true;
+}
- fflush (stdout);
- if (infile != NULL)
- fprintf (stderr, "%s:%d: ", infile, lineno);
- else
- fprintf (stderr, "%s:", program_name);
+void
+warn_at (location loc, const char *message, ...)
+{
+ set_warning_issued ();
+ ERROR_MESSAGE (&loc, _("warning"), message);
+}
- fputs (_("warning: "), stderr);
+void
+warn (const char *message, ...)
+{
+ set_warning_issued ();
+ ERROR_MESSAGE (NULL, _("warning"), message);
+}
-#ifdef VA_START
- VA_START (args, message);
- vfprintf (stderr, message, args);
- va_end (args);
-#else
- fprintf (stderr, message, a1, a2, a3, a4, a5, a6, a7, a8);
-#endif
- ++warn_message_count;
- putc ('\n', stderr);
- fflush (stderr);
-}
-\f
/*-----------------------------------------------------------.
| An error has occurred, but we can proceed, and die later. |
`-----------------------------------------------------------*/
void
-#if defined VA_START && __STDC__
-complain (const char *message, ...)
-#else
-complain (message, va_alist)
- char *message;
- va_dcl
-#endif
+complain_at (location loc, const char *message, ...)
{
-#ifdef VA_START
- va_list args;
-#endif
-
- if (error_one_per_line)
- {
- static const char *old_infile;
- static int old_lineno;
-
- if (old_lineno == lineno &&
- (infile == old_infile || !strcmp (old_infile, infile)))
- /* Simply return and print nothing. */
- return;
-
- old_infile = infile;
- old_lineno = lineno;
- }
+ ERROR_MESSAGE (&loc, NULL, message);
+ complaint_issued = true;
+}
- fflush (stdout);
- if (infile != NULL)
- fprintf (stderr, "%s:%d: ", infile, lineno);
- else
- fprintf (stderr, "%s:", program_name);
+void
+complain (const char *message, ...)
+{
+ ERROR_MESSAGE (NULL, NULL, message);
+ complaint_issued = true;
+}
-#ifdef VA_START
- VA_START (args, message);
- vfprintf (stderr, message, args);
- va_end (args);
-#else
- fprintf (stderr, message, a1, a2, a3, a4, a5, a6, a7, a8);
-#endif
- ++complain_message_count;
- putc ('\n', stderr);
- fflush (stderr);
-}
-\f
/*-------------------------------------------------.
| A severe error has occurred, we cannot proceed. |
`-------------------------------------------------*/
void
-#if defined VA_START && __STDC__
-fatal (const char *message, ...)
-#else
-fatal (message, va_alist)
- char *message;
- va_dcl
-#endif
+fatal_at (location loc, const char *message, ...)
{
-#ifdef VA_START
- va_list args;
-#endif
-
- fflush (stdout);
- if (infile != NULL)
- fprintf (stderr, "%s:%d: ", infile, lineno);
- else
- fprintf (stderr, "%s:", program_name);
-
- fputs (_("fatal error: "), stderr);
-
-#ifdef VA_START
- VA_START (args, message);
- vfprintf (stderr, message, args);
- va_end (args);
-#else
- fprintf (stderr, message, a1, a2, a3, a4, a5, a6, a7, a8);
-#endif
- putc ('\n', stderr);
- fflush (stderr);
- exit (1);
+ ERROR_MESSAGE (&loc, _("fatal error"), message);
+ exit (EXIT_FAILURE);
}
-\f
-/*------------------------------------------------------------------.
-| A severe error has occurred, we cannot proceed. Exit with STATUS, |
-| and report the error message of the errno ERRNUM. |
-`------------------------------------------------------------------*/
void
-#if defined VA_START && __STDC__
-error (int status, int errnum,
- const char *message, ...)
-#else
-error (status, errnum, message, va_alist)
- int status;
- int errnum;
- char *message;
- va_dcl
-#endif
+fatal (const char *message, ...)
{
-#ifdef VA_START
- va_list args;
-#endif
-
- fflush (stdout);
- if (infile != NULL)
- fprintf (stderr, "%s:%d: ", infile, lineno);
- else
- fprintf (stderr, "%s:", program_name);
-
- fputs (_("fatal error: "), stderr);
-
-#ifdef VA_START
- VA_START (args, message);
- vfprintf (stderr, message, args);
- va_end (args);
-#else
- fprintf (stderr, message, a1, a2, a3, a4, a5, a6, a7, a8);
-#endif
-
- if (errnum)
- {
-#if defined HAVE_STRERROR_R || _LIBC
- char errbuf[1024];
-# if HAVE_WORKING_STRERROR_R || _LIBC
- fprintf (stderr, ": %s", __strerror_r (errnum, errbuf, sizeof errbuf));
-# else
- /* Don't use __strerror_r's return value because on some systems
- (at least DEC UNIX 4.0[A-D]) strerror_r returns `int'. */
- __strerror_r (errnum, errbuf, sizeof errbuf);
- fprintf (stderr, ": %s", errbuf);
-# endif
-#else
- fprintf (stderr, ": %s", strerror (errnum));
-#endif
- }
- putc ('\n', stderr);
- fflush (stderr);
- if (status)
- exit (status);
+ ERROR_MESSAGE (NULL, _("fatal error"), message);
+ exit (EXIT_FAILURE);
}
projects / bison.git / blobdiff