More changes to pacify C++ compilers.

[bison.git] / src / closure.h

diff --git a/src/closure.h b/src/closure.h
index 2325e7c4e8f9c32c96d7d3538dd6703916914561..a2582e89467cccfcf21b2ff49befbcb9710e52fe 100644 (file)
--- a/src/closure.h
+++ b/src/closure.h
@@ -1,5 +1,7 @@
 /* Subroutines for bison
 /* Subroutines for bison

-   Copyright (C) 1984, 1989, 2000 Free Software Foundation, Inc.
+
+   Copyright (C) 1984, 1989, 2000, 2001, 2002 Free Software
+   Foundation, Inc.

 
    This file is part of Bison, the GNU Compiler Compiler.
 
 
    This file is part of Bison, the GNU Compiler Compiler.
 


@@ -15,35 +17,43 @@
 
    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
 
    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.  */
+   Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+   02110-1301, USA.  */

 
 

+#ifndef CLOSURE_H_
+# define CLOSURE_H_

 
 

-/* Subroutines of file LR0.c. */
+# 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.  */
 
 
 /* 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 PARAMS ((int n));
+void new_closure (unsigned int n);

 
 
 
 

-/* Given a 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.
+/* Given the kernel (aka core) of a state (a 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.

 
 

-   ruleset contains a bit for each rule.  closure sets the bits for
+   RULESET contains a bit for each rule.  CLOSURE sets the bits for

    all rules which could potentially describe the next input to be
    read.
 
    all rules which could potentially describe the next input to be
    read.
 

-   itemset is a vector of item numbers; itemsetend 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.  */
+   ITEMSET is a 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 *items, size_t n);
+

 
 

-void closure PARAMS ((short *items, int n));
+/* Frees ITEMSET, RULESET and internal data.  */

 
 

+void free_closure (void);

 
 

-/* Frees itemset, ruleset and internal data.  */
+extern item_number *itemset;
+extern size_t nritemset;

 
 

-void free_closure PARAMS ((void));
+#endif /* !CLOSURE_H_ */