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1 package net.sourceforge.pmd.symboltable; 2 3 import net.sourceforge.pmd.util.UnaryFunction; 4 5 import java.util.HashMap; 6 import java.util.List; 7 import java.util.Map; 8 9 public class VariableUsageFinderFunction implements UnaryFunction { 10 private Map results = new HashMap(); 11 private Map decls; 12 private boolean lookingForUsed; 13 14 public VariableUsageFinderFunction(Map decls, boolean lookingForUsed) { 15 this.decls = decls; 16 this.lookingForUsed = lookingForUsed; 17 } 18 19 public void applyTo(Object o) { 20 NameDeclaration decl = (NameDeclaration) o; 21 List usages = (List) decls.get(decl); 22 if (!usages.isEmpty()) { 23 if (lookingForUsed) { 24 results.put(decl, usages); 25 } 26 } else { 27 if (!lookingForUsed) { 28 results.put(decl, usages); 29 } 30 } 31 } 32 33 public Map getUsed() { 34 return results; 35 } 36 }

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