| /* Grammar reduction for Bison. |
| |
| Copyright (C) 2000-2002, 2007, 2009-2015, 2018-2019 Free Software |
| Foundation, Inc. |
| |
| This file is part of Bison, the GNU Compiler Compiler. |
| |
| This program is free software: you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation, either version 3 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| |
| #ifndef REDUCE_H_ |
| # define REDUCE_H_ |
| |
| void reduce_grammar (void); |
| void reduce_output (FILE *out); |
| bool reduce_token_unused_in_grammar (symbol_number i); |
| |
| /** Whether symbol \a i is useless in the grammar. |
| * \pre reduce_grammar was called before. |
| */ |
| bool reduce_nonterminal_useless_in_grammar (const sym_content *sym); |
| |
| void reduce_free (void); |
| |
| /** Map initial nterm numbers to the new ones. Built by |
| * reduce_grammar. Size nvars + nuseless_nonterminals. */ |
| extern symbol_number *nterm_map; |
| |
| extern int nuseless_nonterminals; |
| extern int nuseless_productions; |
| |
| #endif /* !REDUCE_H_ */ |