| Index: bison/src/bison/2.4.1/bison-2.4.1-src/src/closure.h
|
| ===================================================================
|
| --- bison/src/bison/2.4.1/bison-2.4.1-src/src/closure.h (revision 0)
|
| +++ bison/src/bison/2.4.1/bison-2.4.1-src/src/closure.h (revision 0)
|
| @@ -0,0 +1,57 @@
|
| +/* Subroutines for bison
|
| +
|
| + Copyright (C) 1984, 1989, 2000, 2001, 2002, 2007 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 CLOSURE_H_
|
| +# define CLOSURE_H_
|
| +
|
| +# include "gram.h"
|
| +
|
| +/* Allocates the itemset and ruleset vectors, and precomputes useful
|
| + data so that closure can be called. n is the number of elements to
|
| + allocate for itemset. */
|
| +
|
| +void new_closure (unsigned int n);
|
| +
|
| +
|
| +/* Given the kernel (aka core) of a state (a sorted vector of item numbers
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| + ITEMS, of length N), set up RULESET and ITEMSET to indicate what
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| + rules could be run and which items could be accepted when those
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| + items are the active ones.
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| +
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| + RULESET contains a bit for each rule. CLOSURE sets the bits for
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| + all rules which could potentially describe the next input to be
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| + read.
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| +
|
| + ITEMSET is a sorted vector of item numbers; NITEMSET is its size
|
| + (actually, points to just beyond the end of the part of it that is
|
| + significant). CLOSURE places there the indices of all items which
|
| + represent units of input that could arrive next. */
|
| +
|
| +void closure (item_number *items, size_t n);
|
| +
|
| +
|
| +/* Frees ITEMSET, RULESET and internal data. */
|
| +
|
| +void free_closure (void);
|
| +
|
| +extern item_number *itemset;
|
| +extern size_t nitemset;
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| +
|
| +#endif /* !CLOSURE_H_ */
|
|
|
| Property changes on: bison\src\bison\2.4.1\bison-2.4.1-src\src\closure.h
|
| ___________________________________________________________________
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| Added: svn:eol-style
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| + LF
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|