comment changes

[bison.git] / src / closure.h

diff --git a/src/closure.h b/src/closure.h
index 43eae0f062f4807cbbbd0a3bc81806f9ea58cf76..ad4a3ba96b7ba3c361e26128acbd3f9193d8feed 100644 (file)
--- a/src/closure.h
+++ b/src/closure.h
@@ -1,34 +1,36 @@
 /* Subroutines for bison
-   Copyright (C) 1984, 1989, 2000, 2001, 2002  Free Software Foundation, Inc.
+
+   Copyright (C) 1984, 1989, 2000-2002, 2007, 2009-2013 Free Software
+   Foundation, Inc.
 
    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.
+   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.
 
-   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.
+   This program 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.  */
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
 #ifndef CLOSURE_H_
 # define CLOSURE_H_
 
+# include "gram.h"
+
 /* Allocates the itemset and ruleset vectors, and precomputes useful
    data so that closure can be called.  n is the number of elements to
    allocate for itemset.  */
 
-void new_closure (int n);
+void new_closure (unsigned int n);
 
 
-/* Given the kernel (aka core) of a state (a vector of item numbers
+/* Given the kernel (aka core) of a state (a sorted vector of item numbers
    ITEMS, of length N), set up RULESET and ITEMSET to indicate what
    rules could be run and which items could be accepted when those
    items are the active ones.
@@ -37,19 +39,19 @@ void new_closure (int n);
    all rules which could potentially describe the next input to be
    read.
 
-   ITEMSET is a vector of item numbers; NITEMSET is its size
+   ITEMSET is a sorted vector of item numbers; NITEMSET is its size
    (actually, points to just beyond the end of the part of it that is
    significant).  CLOSURE places there the indices of all items which
    represent units of input that could arrive next.  */
 
-void closure (item_number_t *items, int n);
+void closure (item_number const *items, size_t n);
 
 
 /* Frees ITEMSET, RULESET and internal data.  */
 
 void free_closure (void);
 
-extern item_number_t *itemset;
-extern int nritemset;
+extern item_number *itemset;
+extern size_t nitemset;
 
 #endif /* !CLOSURE_H_ */