X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/41f83caf1cbad0e79f7fcd3e35386a523e463784..dd31e17d7e415d3be8fc603f752f7e975297bcc2:/src/complain.c

diff --git a/src/complain.c b/src/complain.c
index 8d3004bb..18432b49 100644
--- a/src/complain.c
+++ b/src/complain.c
@@ -1,10 +1,12 @@
 /* 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
@@ -12,99 +14,129 @@
    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
+#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
-
-/* 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)
+
+
+/** 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 */
 
-/* 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;
 
-
 /*--------------------------------.
 | Report a warning, and proceed.  |
 `--------------------------------*/
 
 void
-warn_at (location loc, const char *message, ...)
+set_warning_issued (void)
 {
-  va_list args;
-
-  fflush (stdout);
-  location_print (stderr, loc);
-  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, _("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);
-}
-
 /*-----------------------------------------------------------.
 | An error has occurred, but we can proceed, and die later.  |
 `-----------------------------------------------------------*/
@@ -112,38 +144,56 @@ warn (const char *message, ...)
 void
 complain_at (location loc, const char *message, ...)
 {
-  va_list args;
-
-  fflush (stdout);
-  location_print (stderr, loc);
-  fputs (": ", stderr);
-
-  va_start (args, message);
-  vfprintf (stderr, message, args);
-  va_end (args);
+  ERROR_MESSAGE (&loc, NULL, message);
+  complaint_issued = true;
+}
 
+void
+complain_at_indent (location loc, unsigned *indent,
+                    const char *message, ...)
+{
+  indent_ptr = indent;
+  ERROR_MESSAGE (&loc, NULL, message);
   complaint_issued = true;
-  putc ('\n', stderr);
-  fflush (stderr);
 }
 
 void
 complain (const char *message, ...)
 {
-  va_list args;
+  ERROR_MESSAGE (NULL, NULL, 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);
+    }
 }
-
+
+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.  |
 `-------------------------------------------------*/
@@ -151,35 +201,13 @@ complain (const char *message, ...)
 void
 fatal_at (location loc, const char *message, ...)
 {
-  va_list args;
-
-  fflush (stdout);
-  location_print (stderr, loc);
-  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);
 }