Plus.java

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package aud.example.expr;
 
public class Plus extends Operator {
  public Plus() {}
 
  @Override public double getValue() {
    ExpressionTree left =(ExpressionTree) node_.getLeft();
    ExpressionTree right=(ExpressionTree) node_.getRight();
    return
      left.getData().getValue() + right.getData().getValue();
  }
  @Override public Type getType() { return Type.OpPlus; }
  @Override public Plus clone() { return new Plus(); }
  @Override public String toString() { return "+"; }
}