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Java > Open Source Codes > soot > jimple > toolkits > callgraph > Sources


1 /* Soot - a J*va Optimization Framework
2  * Copyright (C) 2003 Ondrej Lhotak
3  *
4  * This library is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Lesser General Public
6  * License as published by the Free Software Foundation; either
7  * version 2.1 of the License, or (at your option) any later version.
8  *
9  * This library is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12  * Lesser General Public License for more details.
13  *
14  * You should have received a copy of the GNU Lesser General Public
15  * License along with this library; if not, write to the
16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17  * Boston, MA 02111-1307, USA.
18  */
19
20 package soot.jimple.toolkits.callgraph;
21 import soot.*;
22 import java.util.*;
23
24 /** Adapts an iterator over a collection of Edge's to be an iterator
25  * over the source methods of the edges.
26  * @author Ondrej Lhotak
27  */
28 public final class Sources implements Iterator
29 {
30     Iterator edges;
31     public Sources( Iterator edges ) {
32         this.edges = edges;
33     }
34     public boolean hasNext() {
35         return edges.hasNext();
36     }
37     public Object JavaDoc next() {
38         Edge e = (Edge) edges.next();
39         return e.getSrc();
40     }
41     public void remove() { throw new UnsupportedOperationException JavaDoc(); }
42 }
43
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