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[bison.git] / src / derives.h

diff --git a/src/derives.h b/src/derives.h
index 588174711c1e3ceb62128bf15a0bd129e2f48f3a..9a45dc9cd5e254291a017212abb9fe33ec491be9 100644 (file)
--- a/src/derives.h
+++ b/src/derives.h
@@ -1,5 +1,7 @@
 /* Match rules with nonterminals 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.
 
@@ -15,20 +17,21 @@
 
    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.  */
+   the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+   Boston, MA 02110-1301, USA.  */
 
 #ifndef DERIVES_H_
 # define DERIVES_H_
 
-extern short **derives;
+# include "gram.h"
+
+/* DERIVES[SYMBOL - NTOKENS] points to a vector of the rules that
+   SYMBOL derives, terminated with NULL.  */
+extern rule ***derives;
 
-/* set_derives finds, for each variable (nonterminal), which rules can
-   derive it.  It sets up the value of derives so that derives[i -
-   ntokens] points to a vector of rule numbers, terminated with -1.
-   */
+/* Compute DERIVES.  */
 
-void set_derives PARAMS((void));
-void free_derives PARAMS((void));
+void derives_compute (void);
+void derives_free (void);
 
 #endif /* !DERIVES_H_ */