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Java > Open Source Codes > net > sourceforge > pmd > typeresolution > rules > LooseCoupling


1 /**
2  * BSD-style license; for more info see http://pmd.sourceforge.net/license.html
3  */
4 package net.sourceforge.pmd.typeresolution.rules;
5
6 import net.sourceforge.pmd.AbstractRule;
7 import net.sourceforge.pmd.ast.ASTClassOrInterfaceType;
8 import net.sourceforge.pmd.ast.ASTFieldDeclaration;
9 import net.sourceforge.pmd.ast.ASTFormalParameter;
10 import net.sourceforge.pmd.ast.ASTResultType;
11 import net.sourceforge.pmd.ast.Node;
12 import net.sourceforge.pmd.util.CollectionUtil;
13
14 /**
15  * This is a separate rule, uses the type resolution facade
16  */
17 public class LooseCoupling extends AbstractRule {
18
19     public LooseCoupling() {
20         super();
21     }
22
23     public Object JavaDoc visit(ASTClassOrInterfaceType node, Object JavaDoc data) {
24         Node parent = node.jjtGetParent().jjtGetParent().jjtGetParent();
25         Class JavaDoc clazzType = node.getType();
26         boolean isType = CollectionUtil.isCollectionType(clazzType, false);
27         if (isType
28                 && (parent instanceof ASTFieldDeclaration || parent instanceof ASTFormalParameter || parent instanceof ASTResultType)) {
29             addViolation(data, node, node.getImage());
30         }
31         return data;
32     }
33 }
34
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