/* Compute look-ahead criteria for bison,
- Copyright 1984, 1986, 1989, 2000 Free Software Foundation, Inc.
+ Copyright (C) 1984, 1986, 1989, 2000, 2002 Free Software Foundation, Inc.
This file is part of Bison, the GNU Compiler Compiler.
#ifndef LALR_H_
# define LALR_H_
+#include "bitset.h"
+#include "bitsetv.h"
/* Import the definition of CORE, SHIFTS and REDUCTIONS. */
# include "state.h"
+/* Import the definition of RULE_T. */
+# include "gram.h"
/* Compute how to make the finite state machine deterministic; find
which rules need lookahead in each state, and which lookahead
TO_STATE of the first of them. */
extern short *goto_map;
-extern short *from_state;
-extern short *to_state;
+extern state_number_t *from_state;
+extern state_number_t *to_state;
-/* LARULENO is a vector which records the rules that need lookahead in
- various states. The elements of LARULENO that apply to state S are
- those from LOOKAHEADS[S] through LOOKAHEADS[S+1]-1. Each element
- of LARULENO is a rule number.
+/* LARULE is a vector which records the rules that need lookahead in
+ various states. The elements of LARULE that apply to state S are
+ those from LOOKAHEADS[S] through LOOKAHEADS[S+1]-1.
- If LR is the length of LAruleno, then a number from 0 to LR-1 can
+ If LR is the length of LArule, then a number from 0 to LR-1 can
specify both a rule and a state where the rule might be applied.
*/
-extern short *LAruleno;
+extern rule_t **LArule;
-/* LA is a lr by ntokens matrix of bits. LA[l, i] is 1 if the rule
+/* LA is a LR by NTOKENS matrix of bits. LA[l, i] is 1 if the rule
LAruleno[l] is applicable in the appropriate state when the next
token is symbol i. If LA[l, i] and LA[l, j] are both 1 for i != j,
it is a conflict. */
-extern unsigned *LA;
-#define LA(Rule) (LA + (Rule) * tokensetsize)
+extern bitsetv LA;
-/* All the states, indexed by the state number. */
-extern state_t **state_table;
-
-extern int tokensetsize;
-
-/* The number of lookaheads. */
-extern size_t nlookaheads;
#endif /* !LALR_H_ */