X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/aa7815f5c6e8e07a85e47df9cd7b579468969efb..0fe9720964da510a2b359af390a3053aace65f9f:/src/complain.c

diff --git a/src/complain.c b/src/complain.c
index 35a784ee..984b1361 100644
--- a/src/complain.c
+++ b/src/complain.c
@@ -1,10 +1,12 @@
 /* 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) 2000-2002, 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
@@ -12,258 +14,178 @@
    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 <progname.h>
 
 #include "complain.h"
+#include "files.h"
+#include "getargs.h"
 
-#ifndef _
-# define _(String) String
-#endif
+warnings warnings_flag =
+  Wconflicts_sr | Wconflicts_rr | Wdeprecated  | Wother;
 
-#ifdef _LIBC
-/* In the GNU C library, there is a predefined variable for this.  */
-# define program_name program_invocation_name
-#else /* not _LIBC */
-/* The calling program should define program_name and set it to the
-   name of the executing program.  */
-extern char *program_name;
-#endif
+warnings errors_flag;
 
-/* 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;
-
-/* 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;
-
-/*--------------------------------.
-| Report a warning, and proceed.  |
-`--------------------------------*/
+err_status complaint_status = status_none;
+static unsigned *indent_ptr = 0;
 
 void
-#if defined VA_START && __STDC__
-warn (const char *message, ...)
-#else
-warn (message, va_alist)
-     char *message;
-     va_dcl
-#endif
+warnings_print_categories (warnings warn_flags)
 {
-#ifdef VA_START
-  va_list args;
-#endif
-
-  if (error_one_per_line)
+  if (! (warn_flags & silent))
     {
-      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;
+      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)
+          {
+            bool err = warn_flags & errors_flag;
+            fprintf (stderr, "%s-W", any ? ", " : " [");
+            fprintf (stderr, "%s%s", err ? "error=" : "" , warn_names[i]);
+            any = true;
+          }
+      if (any)
+        fprintf (stderr, "]");
     }
-
-  fflush (stdout);
-  if (infile != NULL)
-    fprintf (stderr, "%s:%d: ", infile, lineno);
-  else
-    fprintf (stderr, "%s:", program_name);
-
-  fputs (_("warning: "), 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
-
-  ++warn_message_count;
-  putc ('\n', stderr);
-  fflush (stderr);
 }
-
-/*-----------------------------------------------------------.
-| An error has occurred, but we can proceed, and die later.  |
-`-----------------------------------------------------------*/
 
+/** 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
-#if defined VA_START && __STDC__
-complain (const char *message, ...)
-#else
-complain (message, va_alist)
-     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
+  unsigned pos = 0;
 
-  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;
+  if (loc)
+    pos += location_print (stderr, *loc);
+  else
+    pos += fprintf (stderr, "%s", current_file ? current_file : program_name);
+  pos += fprintf (stderr, ": ");
 
-      old_infile = infile;
-      old_lineno = lineno;
+  if (indent_ptr)
+    {
+      if (*indent_ptr)
+        prefix = NULL;
+      if (!*indent_ptr)
+        *indent_ptr = pos;
+      else if (*indent_ptr > pos)
+        fprintf (stderr, "%*s", *indent_ptr - pos, "");
+      indent_ptr = 0;
     }
 
-  fflush (stdout);
-  if (infile != NULL)
-    fprintf (stderr, "%s:%d: ", infile, lineno);
-  else
-    fprintf (stderr, "%s:", program_name);
+  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
-
-  ++complain_message_count;
-  putc ('\n', stderr);
+  warnings_print_categories (flags);
+  {
+    size_t l = strlen (message);
+    if (l < 2 || message[l - 2] != ':' || message[l - 1] != ' ')
+      {
+        putc ('\n', stderr);
+        fflush (stderr);
+        if (loc && feature_flag & feature_caret && !(flags & no_caret))
+          location_caret (stderr, *loc);
+      }
+  }
   fflush (stderr);
 }
-
-/*-------------------------------------------------.
-| A severe error has occurred, we cannot proceed.  |
-`-------------------------------------------------*/
+
+/** Raise a complaint. That can be a fatal error, a complaint or just a
+    warning.  */
+static inline void
+complains (const location *loc, warnings flags, const char *message,
+           va_list args)
+{
+  const char* prefix =
+    flags & fatal ? _("fatal error")
+    : flags & (errors_flag | complaint) ? _("error")
+    : _("warning");
+
+  if ((flags & complaint) && complaint_status < status_complaint)
+    complaint_status = status_complaint;
+  else if ((flags & (warnings_flag & errors_flag)) && ! complaint_status)
+    complaint_status = status_warning_as_error;
+  if (flags & (warnings_flag | fatal | complaint))
+    error_message (loc, flags, prefix, message, args);
+  if (flags & fatal)
+    exit (EXIT_FAILURE);
+}
 
 void
-#if defined VA_START && __STDC__
-fatal (const char *message, ...)
-#else
-fatal (message, va_alist)
-     char *message;
-     va_dcl
-#endif
+complain (location const *loc, warnings flags, 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_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);
 }
-
-/*------------------------------------------------------------------.
-| 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
+complain_indent (location const *loc, warnings flags, unsigned *indent,
+                 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);
+  indent_ptr = indent;
+  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
+}
 
-  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);
+void
+complain_args (location const *loc, warnings w, unsigned *indent,
+               int argc, char *argv[])
+{
+  switch (argc)
+  {
+  case 1:
+    complain_indent (loc, w, indent, "%s", _(argv[0]));
+    break;
+  case 2:
+    complain_indent (loc, w, indent, _(argv[0]), argv[1]);
+    break;
+  case 3:
+    complain_indent (loc, w, indent, _(argv[0]), argv[1], argv[2]);
+    break;
+  case 4:
+    complain_indent (loc, w, indent, _(argv[0]), argv[1], argv[2], argv[3]);
+    break;
+  case 5:
+    complain_indent (loc, w, indent, _(argv[0]), argv[1], argv[2], argv[3],
+                     argv[4]);
+    break;
+  default:
+    complain (loc, fatal, "too many arguments for complains");
+    break;
+  }
 }