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Java > Open Source Codes > org > hammurapi > inspectors > SwitchDefaultRule


1 /*
2  * Hammurapi
3  * Automated Java code review system.
4  * Copyright (C) 2004 Hammurapi Group
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License as published by
8  * the Free Software Foundation; either version 2 of the License, or
9  * (at your option) any later version.
10  *
11  * This program is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14  * GNU General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License
17  * along with this program; if not, write to the Free Software
18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19  *
20  * URL: http://www.hammurapi.org
21  * e-Mail: support@hammurapi.biz
22  */
23
24 package org.hammurapi.inspectors;
25
26 import java.util.Iterator JavaDoc;
27
28 import org.hammurapi.InspectorBase;
29
30 import com.pavelvlasov.jsel.statements.CasesGroup;
31 import com.pavelvlasov.jsel.statements.DefaultCase;
32 import com.pavelvlasov.jsel.statements.Statement;
33 import com.pavelvlasov.jsel.statements.SwitchStatement;
34 import com.pavelvlasov.review.SourceMarker;
35
36 /**
37  *
38  * @author Pavel Vlasov
39  * @version $Revision: 1.2 $
40  */
41 public class SwitchDefaultRule extends InspectorBase {
42     
43     /**
44      * Reviews the switch statement.
45      *
46      * @param statement the statement to review.
47      */
48     public void visit(SwitchStatement statement) {
49         Iterator JavaDoc it=statement.getCasesGroups().iterator();
50         while (it.hasNext()) {
51             CasesGroup group = (CasesGroup) it.next();
52             Iterator JavaDoc cit=(group).getCases().iterator();
53             while (cit.hasNext()) {
54                 if (cit.next() instanceof DefaultCase) {
55                     Iterator JavaDoc sit=group.getStatements().iterator();
56                     while (sit.hasNext()) {
57                         if (!isEmpty((Statement) sit.next())) {
58                             return;
59                         }
60                     }
61                     context.reportViolation((SourceMarker) statement, "Default case is present but empty");
62                     return;
63                 }
64             }
65         }
66         context.reportViolation((SourceMarker) statement);
67     }
68 }
69
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