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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.ASTLocalVariableDeclaration;
11 import net.sourceforge.pmd.symboltable.Scope;
12 import net.sourceforge.pmd.symboltable.VariableNameDeclaration;
13
14 public class LocalVariableCouldBeFinal extends AbstractOptimizationRule {
15
16 public Object visit(ASTLocalVariableDeclaration node, Object data) {
17 if (node.isFinal()) {
18 return data;
19 }
20 Scope s = node.getScope();
21 Map decls = s.getVariableDeclarations();
22 for (Iterator i = decls.entrySet().iterator(); i.hasNext();) {
23 Map.Entry entry = (Map.Entry ) i.next();
24 VariableNameDeclaration var = (VariableNameDeclaration) entry.getKey();
25 if (var.getAccessNodeParent() != node) {
26 continue;
27 }
28 if (!assigned((List ) entry.getValue())) {
29 addViolation(data, var.getAccessNodeParent(), var.getImage());
30 }
31 }
32 return data;
33 }
34
35 }
36 |
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