/* Soot - a J*va Optimization Framework
* Copyright (C) 2003 Ondrej Lhotak
*
* 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.
*/
package soot.jimple.toolkits.callgraph;
import java.util.*;
/** Adapts an iterator over a collection of Edge's to be an iterator
* over the source units of the edges.
* @author Ondrej Lhotak
*/
public final class Units implements Iterator
{
Iterator edges;
public Units( Iterator edges ) {
this.edges = edges;
}
public boolean hasNext() {
return edges.hasNext();
}
public Object next() {
Edge e = (Edge) edges.next();
return e.srcUnit();
}
public void remove() { throw new UnsupportedOperationException(); }
}