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1 /* Soot - a J*va Optimization Framework
2  * Copyright (C) 1997-1999 Raja Vallee-Rai
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;
28
29 import soot.util.*;
30 import java.util.*;
31 import soot.*;
32 import java.io.*;
33
34 /** Data used as, for instance, arguments to instructions; typical implementations are
35  * constants or expressions.
36  *
37  * Values are typed, clonable and must declare which other
38  * Values they use (contain). */
39 public interface Value extends Switchable, EquivTo, Serializable
40 {
41     /** Returns a List of boxes corresponding to Values
42      * which are used by (ie contained within) this Value. */
43     public List getUseBoxes();
44
45     /** Returns the Soot type of this Value. */
46     public Type getType();
47
48     /** Returns a clone of this Value. */
49     public Object JavaDoc clone();
50     
51     public void toString( UnitPrinter up );
52 }
53
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