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.RuleContext;
8 import net.sourceforge.pmd.ast.ASTMethodDeclaration;
9 import net.sourceforge.pmd.ast.ASTClassOrInterfaceDeclaration;
10 import net.sourceforge.pmd.symboltable.VariableNameDeclaration;
11
12 import java.text.MessageFormat;
13 import java.util.Iterator;
14 import java.util.List;
15 import java.util.Map;
16
17 public class UnusedFormalParameterRule extends AbstractRule {
18
19 public Object visit(ASTMethodDeclaration node, Object data) {
20 if (!node.isNative() && !((ASTClassOrInterfaceDeclaration)node.jjtGetParent().jjtGetParent().jjtGetParent()).isInterface()) {
21 RuleContext ctx = (RuleContext) data;
22 Map vars = node.getScope().getVariableDeclarations();
23 for (Iterator i = vars.keySet().iterator(); i.hasNext();) {
24 VariableNameDeclaration nameDecl = (VariableNameDeclaration) i.next();
25 if (!((List) vars.get(nameDecl)).isEmpty()) {
26 continue;
27 }
28 ctx.getReport().addRuleViolation(createRuleViolation(ctx, node, MessageFormat.format(getMessage(), new Object[]{nameDecl.getImage()})));
29 }
30 }
31 return data;
32 }
33 }