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3519ec76 | 1 | /* Part of the bison parser generator, |
7d424de1 | 2 | |
7d6bad19 | 3 | Copyright (C) 2000, 2002, 2009-2013 Free Software Foundation, Inc. |
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4 | |
5 | This file is part of Bison, the GNU Compiler Compiler. | |
6 | ||
f16b0819 | 7 | This program is free software: you can redistribute it and/or modify |
3519ec76 | 8 | it under the terms of the GNU General Public License as published by |
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9 | the Free Software Foundation, either version 3 of the License, or |
10 | (at your option) any later version. | |
3519ec76 | 11 | |
f16b0819 | 12 | This program is distributed in the hope that it will be useful, |
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13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
f16b0819 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
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19 | |
20 | #ifndef NULLABLE_H_ | |
21 | # define NULLABLE_H_ | |
22 | ||
23 | /* A vector saying which nonterminals can expand into the null string. | |
24 | NULLABLE[I - NTOKENS] is nonzero if symbol I can do so. */ | |
bb0027a9 | 25 | extern bool *nullable; |
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26 | |
27 | /* Set up NULLABLE. */ | |
d33cb3ae | 28 | extern void nullable_compute (void); |
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29 | |
30 | /* Free NULLABLE. */ | |
d33cb3ae | 31 | extern void nullable_free (void); |
3519ec76 | 32 | #endif /* !NULLABLE_H_ */ |