/* Soot - a J*va Optimization Framework
* Copyright (C) 2002 Florian Loitsch
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/*
* Modified by the Sable Research Group and others 1997-1999.
* See the 'credits' file distributed with Soot for the complete list of
* contributors. (Soot is distributed at http://www.sable.mcgill.ca/soot)
*/
package soot.toolkits.scalar;
/**
* provides functional code for most of the methods. Subclasses are invited to
* provide a more efficient version. Most often this will be done in the
* following way:<br>
* <pre>
* public void yyy(FlowSet dest) {
* if (dest instanceof xxx) {
* blahblah;
* } else
* super.yyy(dest)
* }
* </pre>
*/
public abstract class AbstractBoundedFlowSet extends AbstractFlowSet implements
BoundedFlowSet {
public void complement() {
complement(this);
}
public void complement(FlowSet dest) {
if (this == dest)
complement();
else {
BoundedFlowSet tmp = (BoundedFlowSet)topSet();
tmp.difference(this, dest);
}
}
public Object topSet() {
BoundedFlowSet tmp = (BoundedFlowSet)emptySet();
tmp.complement();
return tmp;
}
}