Merge remote-tracking branch 'origin/maint'

[bison.git] / src / complain.c

diff --git a/src/complain.c b/src/complain.c
index 14ef2388c9aea33eeeff7f789c9a5bdf1e9b5dd5..7d905de5055aaa94debb5f998efdef1e7d258221 100644 (file)
--- a/src/complain.c
+++ b/src/complain.c
@@ -1,10 +1,12 @@
 /* Declaration for error-reporting function for Bison.
 /* 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
 
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of


@@ -12,291 +14,181 @@
    GNU General Public License for more details.
 
    You should have received a copy of the GNU General Public License
    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>.  */
 
 
 /* Based on error.c and error.h,
    written by David MacKenzie <djm@gnu.ai.mit.edu>.  */
 

+#include <config.h>

 #include "system.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 "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
+warnings warnings_flag = Wconflicts_sr | Wconflicts_rr | Wother;

 
 

-#else /* not _LIBC */
+bool complaint_issued;
+static unsigned *indent_ptr = 0;

 
 

-/* 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;
+void
+warnings_print_categories (warnings warn_flags)

 {
 {

-  extern char *sys_errlist[];
-  extern int sys_nerr;
-
-  if (errnum > 0 && errnum <= sys_nerr)
-    return _(sys_errlist[errnum]);
-  return _("Unknown system error");
+  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, "]");
+    }

 }
 }

-#   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;
-
-/* This variable is incremented each time `complain' is called.  */
-unsigned int complain_message_count;
-
-\f
-/*--------------------------------.
-| Report a warning, and proceed.  |
-`--------------------------------*/

 
 

+/** 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
 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
+error_message (const location *loc, warnings flags, const char *prefix,
+               const char *message, va_list args)

 {
 {

-#ifdef VA_START
-  va_list args;
-#endif
+  (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);

 
 

-  fflush (stdout);
-  LOCATION_PRINT (stderr, location);
-  fputs (": ", stderr);
-  fputs (_("warning: "), stderr);
-
-#ifdef VA_START
-  VA_START (args, message);

   vfprintf (stderr, message, args);
   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);
+  warnings_print_categories (flags);
+  {
+    size_t l = strlen (message);
+    if (l < 2 || message[l-2] != ':' || message[l-1] != ' ')
+      {
+        putc ('\n', stderr);
+        fflush (stderr);
+      }
+  }

 }
 
 }
 

-void
-#if defined VA_START && defined __STDC__
-warn (const char *message, ...)
-#else
-warn (message, va_alist)
-  char *message;
-  va_dcl
-#endif
-{
-#ifdef VA_START
-  va_list args;
-#endif
+/** Raise a complaint. That can be a fatal error, a complaint or just a
+    warning.  */

 
 

-  fflush (stdout);
-  fprintf (stderr, "%s: %s", infile ? infile : program_name, _("warning: "));
-
-#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);
+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
 
 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;
   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);
   va_end (args);

-#else
-  fprintf (stderr, message, a1, a2, a3, a4, a5, a6, a7, a8);
-#endif
-
-  ++complain_message_count;
-  putc ('\n', stderr);
-  fflush (stderr);

 }
 
 void
 }
 
 void

-#if defined VA_START && defined __STDC__
-complain (const char *message, ...)
-#else
-complain (message, va_alist)
-     char *message;
-     va_dcl
-#endif
+complain_at (location loc, warnings flags, const char *message, ...)

 {
 {

-#ifdef VA_START

   va_list args;
   va_list args;

-#endif
-
-  fflush (stdout);
-  fprintf (stderr, "%s: ", infile ? infile : program_name);
-
-#ifdef VA_START
-  VA_START (args, message);
-  vfprintf (stderr, message, args);
+  va_start (args, message);
+  complains (&loc, flags, message, args);

   va_end (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_at (location, message, va_alist)
-  location_t location;
-  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
-
-  fflush (stdout);
-  LOCATION_PRINT (stderr, location);
-  fputs (": ", stderr);
-  fputs (_("fatal error: "), stderr);
+  indent_ptr = indent;

 
 

-#ifdef VA_START
-  VA_START (args, message);
-  vfprintf (stderr, message, args);
+  va_list args;
+  va_start (args, message);
+  complains (&loc, flags, message, args);

   va_end (args);
   va_end (args);

-#else
-  fprintf (stderr, message, a1, a2, a3, a4, a5, a6, a7, a8);
-#endif
-  putc ('\n', stderr);
-  fflush (stderr);
-  exit (1);

 }
 
 }
 

+/*--------------------------------.
+| Report a warning, and proceed.  |
+`--------------------------------*/
+

 void
 void

-#if defined VA_START && defined __STDC__
-fatal (const char *message, ...)
-#else
-fatal (message, va_alist)
-     char *message;
-     va_dcl
-#endif
+set_warning_issued (void)

 {
 {

-#ifdef VA_START
-  va_list args;
-#endif
-
-  fflush (stdout);
-  fprintf (stderr, "%s: ", infile ? infile : 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);
+  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;

 }
 }