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1
4 package net.sourceforge.pmd.rules.optimization;
5
6 import java.util.Iterator  ;
7 import java.util.List ;
8 import java.util.Map ;
9
10 import net.sourceforge.pmd.ast.ASTFormalParameter;
11 import net.sourceforge.pmd.ast.ASTMethodDeclaration;
12 import net.sourceforge.pmd.ast.AccessNode;
13 import net.sourceforge.pmd.symboltable.Scope;
14 import net.sourceforge.pmd.symboltable.VariableNameDeclaration;
15
16 public class MethodArgumentCouldBeFinal extends AbstractOptimizationRule {
17
18 public Object visit(ASTMethodDeclaration meth, Object data) {
19 if (meth.isNative() || meth.isAbstract()) {
20 return data;
21 }
22 Scope s = meth.getScope();
23 Map decls = s.getVariableDeclarations();
24 for (Iterator i = decls.entrySet().iterator(); i.hasNext();) {
25 Map.Entry entry = (Map.Entry ) i.next();
26 VariableNameDeclaration var = (VariableNameDeclaration) entry.getKey();
27 AccessNode node = var.getAccessNodeParent();
28 if (!node.isFinal() && (node instanceof ASTFormalParameter) && !assigned((List ) entry.getValue())) {
29 addViolation(data, node, var.getImage());
30 }
31 }
32 return data;
33 }
34
35 }
36 |
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