X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/2dfb4daf9b3032f4740d1f8d4906077ecc72bdef..e89a22bfab22e4d2ee73be49dcb66b51f8d0e892:/src/gram.c

diff --git a/src/gram.c b/src/gram.c
index 35302616..9db02d8b 100644
--- a/src/gram.c
+++ b/src/gram.c
@@ -1,30 +1,28 @@
 /* Allocate input grammar variables for bison,
    Copyright 1984, 1986, 1989, 2001 Free Software Foundation, Inc.
 
-This file is part of Bison, the GNU Compiler Compiler.
+   This file is part of Bison, the GNU Compiler Compiler.
 
-Bison 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.
+   Bison 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.
 
-Bison is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-GNU General Public License for more details.
+   Bison is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
 
-You should have received a copy of the GNU General Public License
-along with Bison; see the file COPYING.  If not, write to
-the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA.  */
+   You should have received a copy of the GNU General Public License
+   along with Bison; see the file COPYING.  If not, write to
+   the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
 
 
 #include "system.h"
 #include "gram.h"
 #include "reader.h"
 
-void dummy PARAMS((void));
-
 /* comments for these variables are in gram.h  */
 
 int nitems;
@@ -41,7 +39,6 @@ short *sprec = NULL;
 short *rassoc = NULL;
 short *sassoc = NULL;
 short *token_translations = NULL;
-short *rline = NULL;
 
 int start_symbol;
 
@@ -53,6 +50,11 @@ int pure_parser;
 
 int error_token_number;
 
+
+/*------------------------.
+| Dump RITEM for traces.  |
+`------------------------*/
+
 void
 ritem_print (FILE *out)
 {
@@ -65,3 +67,32 @@ ritem_print (FILE *out)
       fprintf (out, "  (rule %d)\n", -ritem[i]);
   fputs ("\n\n", out);
 }
+
+
+/*------------------------------------------.
+| Return the size of the longest rule RHS.  |
+`------------------------------------------*/
+
+size_t
+ritem_longest_rhs (void)
+{
+  short *itemp;
+  int length;
+  int max;
+
+  length = 0;
+  max = 0;
+  for (itemp = ritem; *itemp; itemp++)
+    if (*itemp > 0)
+      {
+	length++;
+      }
+    else
+      {
+	if (length > max)
+	  max = length;
+	length = 0;
+      }
+
+  return max;
+}