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 visit(ASTClassOrInterfaceType node, Object data) {
24 Node parent = node.jjtGetParent().jjtGetParent().jjtGetParent();
25 Class 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 }