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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.symboltable.VariableNameDeclaration;
10  
11  import java.text.MessageFormat;
12  import java.util.Iterator;
13  
14  public class UnusedFormalParameterRule extends AbstractRule {
15  
16      public Object visit(ASTMethodDeclaration node, Object data) {
17          if (node.isPrivate() && !node.isNative()) {  // make sure it's both private and not native
18              RuleContext ctx = (RuleContext) data;
19              for (Iterator i = node.getScope().getVariableDeclarations(false).keySet().iterator(); i.hasNext();) {
20                  VariableNameDeclaration nameDecl = (VariableNameDeclaration) i.next();
21                  ctx.getReport().addRuleViolation(createRuleViolation(ctx, node.getBeginLine(), MessageFormat.format(getMessage(), new Object[]{nameDecl.getImage()})));
22              }
23          }
24          return data;
25      }
26  }