/**************** TipoToken.java ****************

  Tipo enumerativo per i possibili token
  per una calcolatrice (versione 2)
 
*************************************************/

public enum TipoToken {
  PIU {
    public int calcola(int opSx, int opDx) {
      return opSx + opDx;
    }
  }, 
  MENO {
    public int calcola(int opSx, int opDx) {
      return opSx - opDx;
    }
  },
  PER {
    public int calcola(int opSx, int opDx) {
      return opSx * opDx;
    }
  }, 
  DIVISO {
    public int calcola(int opSx, int opDx) {
      return opSx / opDx;
    }
  },
  NUMERO, 
  ALTRO;
  
  public int calcola(int opSx, int opDx) {
    return 0;
  }
}