import java.util.HashMap;
   
public class NumberNode extends Node
{
   public NumberNode(String text)
   {
      mValue = Double.parseDouble(text);
   }

   public double evaluate(HashMap<String, Double> env) throws Exception
   {
      return(mValue);
   }

   public String toString()
   {
      return("" + mValue);
   }

   private double mValue;
}