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 |
+ ITEMS, of length N), set up RULESET and ITEMSET to indicate what |
+ rules could be run and which items could be accepted when those |
+ items are the active ones. |
+ |
+ RULESET contains a bit for each rule. CLOSURE sets the bits for |
+ all rules which could potentially describe the next input to be |
+ read. |
+ |
+ 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; |
+ |
+#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 |
+ LF |