/* Declaration for error-reporting function for Bison.
- Copyright 2000, 2001 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"
-#if HAVE_VPRINTF || HAVE_DOPRNT || _LIBC
-# ifdef __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
-
-#if STDC_HEADERS || _LIBC
-# include <stdlib.h>
-# include <string.h>
-#else
-void exit ();
-#endif
+#include <stdarg.h>
+#include <progname.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. */
-
-# 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;
-
-# 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;
-{
- extern char *sys_errlist[];
- extern int sys_nerr;
-
- if (errnum > 0 && errnum <= sys_nerr)
- return _(sys_errlist[errnum]);
- return _("Unknown system error");
-}
-# 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;
+warnings warnings_flag =
+ Wconflicts_sr | Wconflicts_rr | Wdeprecated | Wother;
-/* This variable is incremented each time `complain' is called. */
-unsigned int complain_message_count;
-
-\f
-/*--------------------------------.
-| Report a warning, and proceed. |
-`--------------------------------*/
+bool complaint_issued;
+static unsigned *indent_ptr = 0;
void
-#if defined VA_START && defined __STDC__
-warn_at (location_t location, const char *message, ...)
-#else
-warn_at (location, message, va_alist)
- location_t location
- char *message;
- va_dcl
-#endif
+warnings_print_categories (warnings warn_flags)
{
-#ifdef VA_START
- va_list args;
-#endif
+ if (! (warn_flags & silent))
+ {
+ char const *warn_names[] =
+ {
+ "midrule-values",
+ "yacc",
+ "conflicts-sr",
+ "conflicts-rr",
+ "deprecated",
+ "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, "]");
+ }
+}
- fflush (stdout);
- LOCATION_PRINT (stderr, location);
- fputs (": ", stderr);
- fputs (_("warning: "), 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
+error_message (const location *loc, warnings flags, const char *prefix,
+ const char *message, va_list args)
+{
+ (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);
-#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
+ warnings_print_categories (flags);
+ {
+ size_t l = strlen (message);
+ if (l < 2 || message[l-2] != ':' || message[l-1] != ' ')
+ {
+ putc ('\n', stderr);
+ fflush (stderr);
+ }
+ }
+}
+
+/** Raise a complaint. That can be a fatal error, a complaint or just a
+ warning. */
- ++warn_message_count;
- putc ('\n', stderr);
- fflush (stderr);
+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
-#if defined VA_START && defined __STDC__
-complain_at (location_t location, const char *message, ...)
-#else
-complain_at (location, message, va_alist)
- location_t location;
- char *message;
- va_dcl
-#endif
+complain (warnings flags, const char *message, ...)
{
-#ifdef VA_START
va_list args;
-#endif
-
- fflush (stdout);
- LOCATION_PRINT (stderr, location);
- fputs (": ", stderr);
-
-#ifdef VA_START
- VA_START (args, message);
- vfprintf (stderr, message, args);
+ va_start (args, message);
+ complains (NULL, flags, 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 && defined __STDC__
-fatal_at (location_t location, const char *message, ...)
-#else
-fatal (location, message, va_alist)
- location_t location;
- char *message;
- va_dcl
-#endif
+complain_at (location loc, warnings flags, const char *message, ...)
{
-#ifdef VA_START
va_list args;
-#endif
-
- fflush (stdout);
- LOCATION_PRINT (stderr, location);
- fputs (": ", stderr);
- fputs (_("fatal error: "), stderr);
-
-#ifdef VA_START
- VA_START (args, message);
- vfprintf (stderr, message, args);
+ va_start (args, message);
+ complains (&loc, flags, 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);
}
-void
-#if defined VA_START && defined __STDC__
-fatal (const char *message, ...)
-#else
-fatal (message, va_alist)
- char *message;
- va_dcl
-#endif
+void complain_at_indent (location loc, warnings flags, unsigned *indent,
+ const char *message, ...)
{
-#ifdef VA_START
- va_list args;
-#endif
+ indent_ptr = indent;
- fflush (stdout);
- fprintf (stderr, "%s: ", infile ? infile : program_name);
+ va_list args;
+ va_start (args, message);
+ complains (&loc, flags, message, args);
+ va_end (args);
+}
- fputs (_("fatal error: "), stderr);
+/*--------------------------------.
+| Report a warning, and proceed. |
+`--------------------------------*/
-#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);
+void
+set_warning_issued (void)
+{
+ 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