1 /***
2 * BSD-style license; for more info see http://pmd.sourceforge.net/license.html
3 */
4 package net.sourceforge.pmd.rules;
5
6 import net.sourceforge.pmd.AbstractRule;
7 import net.sourceforge.pmd.ast.ASTClassOrInterfaceDeclaration;
8 import net.sourceforge.pmd.ast.ASTConstructorDeclaration;
9 import net.sourceforge.pmd.ast.ASTMethodDeclaration;
10 import net.sourceforge.pmd.ast.Node;
11 import net.sourceforge.pmd.ast.SimpleNode;
12 import net.sourceforge.pmd.symboltable.VariableNameDeclaration;
13
14 import java.util.Iterator;
15 import java.util.List;
16 import java.util.Map;
17
18 public class UnusedFormalParameterRule extends AbstractRule {
19
20 public Object visit(ASTConstructorDeclaration node, Object data) {
21 check(node, data);
22 return data;
23 }
24
25 public Object visit(ASTMethodDeclaration node, Object data) {
26 if (!node.isPrivate() && !hasProperty("checkall")) {
27 return data;
28 }
29 if (!node.isNative()) {
30 check(node, data);
31 }
32 return data;
33 }
34
35 private void check(SimpleNode node, Object data) {
36 Node parent = node.jjtGetParent().jjtGetParent().jjtGetParent();
37 if (parent instanceof ASTClassOrInterfaceDeclaration && !((ASTClassOrInterfaceDeclaration) parent).isInterface()) {
38 Map vars = node.getScope().getVariableDeclarations();
39 for (Iterator i = vars.keySet().iterator(); i.hasNext();) {
40 VariableNameDeclaration nameDecl = (VariableNameDeclaration) i.next();
41 if (!((List) vars.get(nameDecl)).isEmpty()) {
42 continue;
43 }
44 addViolation(data, node, new Object[]{node instanceof ASTMethodDeclaration ? "method" : "constructor", nameDecl.getImage()});
45 }
46 }
47 }
48
49 }