X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/cc84fd5dc79495429d3406f9088d01f477b52a7b..616429b50868bf9225d55143526442a024e32969:/src/derives.h?ds=sidebyside

diff --git a/src/derives.h b/src/derives.h
index d9505aba..96fcc3fc 100644
--- a/src/derives.h
+++ b/src/derives.h
@@ -1,5 +1,5 @@
 /* Match rules with nonterminals for bison,
-   Copyright (C) 1984, 1989, 2000 Free Software Foundation, Inc.
+   Copyright 1984, 1989, 2000, 2001 Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
@@ -18,11 +18,16 @@
    the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.  */
 
+#ifndef DERIVES_H_
+# define DERIVES_H_
 
-/* 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.
-   */
+/* DERIVES[SYMBOL - NTOKENS] points to a vector of the number of the
+   rules that SYMBOL derives, terminated with -1.  */
+extern short **derives;
+
+/* Compute DERIVES.  */
 
 void set_derives PARAMS((void));
 void free_derives PARAMS((void));
+
+#endif /* !DERIVES_H_ */