* data/yacc.c: Guard the declaration of yytoknum also with

[bison.git] / src / derives.h

diff --git a/src/derives.h b/src/derives.h
index d9505abaea6577f1475fabed02e83dbb3761b85e..c5581243921cd1ab95604eeb932b5437a7a0d410 100644 (file)
--- 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 (C) 1984, 1989, 2000, 2001, 2002  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 rules that
+   SYMBOL derives, terminated with NULL.  */
+extern rule_t ***derives;
 
-void set_derives PARAMS((void));
-void free_derives PARAMS((void));
+/* Compute DERIVES.  */
+
+void derives_compute PARAMS((void));
+void derives_free PARAMS((void));
+
+#endif /* !DERIVES_H_ */