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Java > Open Source Codes > edu > umd > cs > findbugs > detect > TrainUnconditionalDerefParams


1 /*
2  * FindBugs - Find Bugs in Java programs
3  * Copyright (C) 2005, 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.detect;
21
22 import edu.umd.cs.findbugs.BugReporter;
23 import edu.umd.cs.findbugs.Detector;
24 import edu.umd.cs.findbugs.SystemProperties;
25 import edu.umd.cs.findbugs.TrainingDetector;
26 import edu.umd.cs.findbugs.ba.AnalysisContext;
27
28 /**
29  * Training pass to find method parameters which are
30  * unconditionally dereferenced. We do this by performing
31  * a backwards dataflow analysis which sees which params are
32  * dereferenced on all non-implicit-exception paths from the CFG entry.
33  *
34  * @author David Hovemeyer
35  */

36 public class TrainUnconditionalDerefParams
37         extends BuildUnconditionalParamDerefDatabase
38         implements Detector, TrainingDetector {
39     private static final boolean VERBOSE_DEBUG = SystemProperties.getBoolean("upd.debug");
40     
41     public TrainUnconditionalDerefParams(BugReporter bugReporter) {
42     }
43
44     /* (non-Javadoc)
45      * @see edu.umd.cs.findbugs.Detector#report()
46      */

47     public void report() {
48         AnalysisContext.currentAnalysisContext().storePropertyDatabase(
49                 AnalysisContext.currentAnalysisContext().getUnconditionalDerefParamDatabase(),
50                 AnalysisContext.UNCONDITIONAL_DEREF_DB_FILENAME,
51                 "unconditional deref database");
52     }
53
54 }
55
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