1/* Grammar reduction for Bison.
2
3   Copyright (C) 2000-2002, 2007, 2009-2012 Free Software Foundation,
4   Inc.
5
6   This file is part of Bison, the GNU Compiler Compiler.
7
8   This program is free software: you can redistribute it and/or modify
9   it under the terms of the GNU General Public License as published by
10   the Free Software Foundation, either version 3 of the License, or
11   (at your option) any later version.
12
13   This program is distributed in the hope that it will be useful,
14   but WITHOUT ANY WARRANTY; without even the implied warranty of
15   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16   GNU General Public License for more details.
17
18   You should have received a copy of the GNU General Public License
19   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
20
21#ifndef REDUCE_H_
22# define REDUCE_H_
23
24void reduce_grammar (void);
25void reduce_output (FILE *out);
26bool reduce_token_unused_in_grammar (symbol_number i);
27bool reduce_nonterminal_useless_in_grammar (symbol_number i);
28void reduce_free (void);
29
30extern symbol_number nuseless_nonterminals;
31extern rule_number nuseless_productions;
32#endif /* !REDUCE_H_ */
33