/**
  * Copyright (c): Uwe Schmidt, FH Wedel
  *
  * You may study, modify and distribute this source code
  * FOR NON-COMMERCIAL PURPOSES ONLY.
  * This copyright message has to remain unchanged.
  *
  * Note that this document is provided 'as is',
  * WITHOUT WARRANTY of any kind either expressed or implied.
  */

/**
 * eine Klasse fuer das unaere Plus
 *
 */

//--------------------

public
class UnaryPlus extends UnaryExpr {

  //--------------------

  public
  UnaryPlus(Expr operand) {
    super(operand);
  }

  //--------------------

  // eval wertet den Operanden aus
  // dies ist das Resultat

  public
  Object eval() {
    return
      operand.eval();
  }

  //--------------------

  public
  String toString() {
    return
      "( +" + operand.toString() + ")";
  }
}

//--------------------