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


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 package org.hammurapi.inspectors;
24
25 import org.hammurapi.InspectorBase;
26
27 import com.pavelvlasov.jsel.LanguageElement;
28 import com.pavelvlasov.jsel.expressions.Expression;
29 import com.pavelvlasov.jsel.expressions.Parenthesis;
30 import com.pavelvlasov.review.SourceMarker;
31
32 /**
33  * @author Pavel Vlasov
34  * @version $Revision: 1.5 $
35  */
36 public class RedundantParenthesisRule extends InspectorBase {
37     
38     public void visit(Parenthesis parenthesis) {
39         if (parenthesis.getOperands().isEmpty()) {
40             return;
41         }
42         
43         Class JavaDoc parent=((LanguageElement) parenthesis).getParent().getClass();
44         if (parent.getInterfaces().length==0) {
45             return;
46         }
47         parent=parent.getInterfaces()[0];
48         if (parent.getInterfaces().length==0) {
49             return;
50         }
51         parent=parent.getInterfaces()[0];
52         
53         Expression firstOperand = parenthesis.getOperand(0);
54         Class JavaDoc operand=firstOperand.getClass();
55         if (operand.getInterfaces().length==0) {
56             return;
57         }
58         operand=operand.getInterfaces()[0];
59         if (operand.getInterfaces().length==0) {
60             return;
61         }
62         operand=operand.getInterfaces()[0];
63         
64         if (parent.isAssignableFrom(operand)) {
65             context.reportViolation((SourceMarker) parenthesis);
66         }
67     }
68 }
69
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