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/* Part of the bison parser generator,
Copyright (C) 2000, 2002, 2009-2015, 2018-2021 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 <https://www.gnu.org/licenses/>. */
#ifndef NULLABLE_H_
# define NULLABLE_H_
/* A vector saying which nonterminals can expand into the null string.
NULLABLE[I - NTOKENS] is nonzero if symbol I can do so. */
extern bool *nullable;
/* Set up NULLABLE. */
extern void nullable_compute (void);
/* Free NULLABLE. */
extern void nullable_free (void);
#endif /* !NULLABLE_H_ */
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