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Java > Open Source Codes > soot > toolkits > scalar > FlowUniverse


1 /* Soot - a J*va Optimization Framework
2  * Copyright (C) 2002 Florian Loitsch
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 /*
21  * Modified by the Sable Research Group and others 1997-1999.
22  * See the 'credits' file distributed with Soot for the complete list of
23  * contributors. (Soot is distributed at http://www.sable.mcgill.ca/soot)
24  */

25
26
27 package soot.toolkits.scalar;
28
29 import soot.*;
30 import soot.util.*;
31 import java.util.*;
32
33 /**
34  * Provides an interface of a flow universe, used by an implementation
35  * of BoundedFlowSet to do complementation.
36  */

37 public interface FlowUniverse {
38
39   /**
40    * returns the number of elements of the universe.
41    *
42    * @return the size of the universe.
43    */

44   public int size();
45
46   /**
47    * returns an iterator over the elements of the universe.
48    *
49    * @return an Iterator over the elements.
50    */

51   public Iterator iterator();
52
53   /**
54    * returns the elements of the universe in form of an array.<br>
55    * The returned array could be backed or not. If you want to be sure
56    * that it is unbacked, clone() it.
57    *
58    * @return the elements of the universe.
59    */

60   public Object JavaDoc[] toArray();
61 }
62
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