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Java > Open Source Codes > edu > umd > cs > findbugs > ba > npe2 > Condition


1 /*
2  * FindBugs - Find Bugs in Java programs
3  * Copyright (C) 2006, University of Maryland
4  *
5  * This library is free software; you can redistribute it and/or
6  * modify it under the terms of the GNU Lesser General Public
7  * License as published by the Free Software Foundation; either
8  * version 2.1 of the License, or (at your option) any later version.
9  *
10  * This library is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13  * Lesser General Public License for more details.
14  *
15  * You should have received a copy of the GNU Lesser General Public
16  * License along with this library; if not, write to the Free Software
17  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18  */
19
20 package edu.umd.cs.findbugs.ba.npe2;
21
22 import edu.umd.cs.findbugs.ba.DataflowAnalysisException;
23 import edu.umd.cs.findbugs.ba.Edge;
24 import edu.umd.cs.findbugs.ba.Location;
25 import edu.umd.cs.findbugs.ba.vna.ValueNumber;
26 import edu.umd.cs.findbugs.ba.vna.ValueNumberFrame;
27
28 /**
29  * @author David Hovemeyer
30  */
31 public abstract class Condition {
32     private Location location;
33     
34     public Condition(Location location) {
35         this.location= location;
36     }
37     
38     public Location getLocation() {
39         return location;
40     }
41     
42     public abstract void refresh(ValueNumberFrame vnaFrame, DefinitelyNullSet definitelyNullSet) throws DataflowAnalysisException;
43     
44     public abstract ValueNumber getValueNumber();
45
46     public abstract Decision getDecision(Edge edge);
47 }
48
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