X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/f6fbd3da9d1366ccaa0163c6c93dde11e5720262..d0d3313d10a28aa6fe77f158d61b84424aa9b3ce:/src/closure.c?ds=sidebyside
diff --git a/src/closure.c b/src/closure.c
index 01f026bb..d9bc5ffa 100644
--- a/src/closure.c
+++ b/src/closure.c
@@ -1,31 +1,29 @@
/* Closures for Bison
- Copyright (C) 1984, 1989, 2000, 2001, 2002, 2004 Free Software
- Foundation, Inc.
+ Copyright (C) 1984, 1989, 2000-2002, 2004-2005, 2007, 2009-2012 Free
+ Software Foundation, Inc.
This file is part of Bison, the GNU Compiler Compiler.
- Bison 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 2, or (at your option)
- any later version.
+ 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.
- Bison 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.
+ 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 Bison; see the file COPYING. If not, write to the Free
- Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- 02111-1307, USA. */
+ along with this program. If not, see . */
+#include
#include "system.h"
#include
#include
#include
-#include
#include "closure.h"
#include "derives.h"
@@ -36,7 +34,7 @@
/* NITEMSET is the size of the array ITEMSET. */
item_number *itemset;
-size_t nritemset;
+size_t nitemset;
static bitset ruleset;
@@ -212,30 +210,32 @@ closure (item_number *core, size_t n)
if (ISVAR (ritem[core[c]]))
bitset_or (ruleset, ruleset, FDERIVES (ritem[core[c]]));
- nritemset = 0;
+ /* core is sorted on item index in ritem, which is sorted on rule number.
+ Compute itemset with the same sort. */
+ nitemset = 0;
c = 0;
BITSET_FOR_EACH (iter, ruleset, ruleno, 0)
{
item_number itemno = rules[ruleno].rhs - ritem;
while (c < n && core[c] < itemno)
{
- itemset[nritemset] = core[c];
- nritemset++;
+ itemset[nitemset] = core[c];
+ nitemset++;
c++;
}
- itemset[nritemset] = itemno;
- nritemset++;
+ itemset[nitemset] = itemno;
+ nitemset++;
};
while (c < n)
{
- itemset[nritemset] = core[c];
- nritemset++;
+ itemset[nitemset] = core[c];
+ nitemset++;
c++;
}
if (trace_flag & trace_sets)
- print_closure ("output", itemset, nritemset);
+ print_closure ("output", itemset, nitemset);
}