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34 lines
1.1 KiB
C
34 lines
1.1 KiB
C
/* Part of the bison parser generator,
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Copyright (C) 2000, 2002, 2009-2015, 2018-2021 Free Software
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Foundation, Inc.
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This file is part of Bison, the GNU Compiler Compiler.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>. */
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#ifndef NULLABLE_H_
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# define NULLABLE_H_
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/* A vector saying which nonterminals can expand into the null string.
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NULLABLE[I - NTOKENS] is nonzero if symbol I can do so. */
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extern bool *nullable;
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/* Set up NULLABLE. */
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extern void nullable_compute (void);
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/* Free NULLABLE. */
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extern void nullable_free (void);
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#endif /* !NULLABLE_H_ */
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