progs/app01.scala
author Christian Urban <urbanc@in.tum.de>
Fri, 10 Apr 2020 12:11:19 +0100
changeset 717 9a431d1eac85
parent 400 e4afe3f46c29
permissions -rw-r--r--
added parser file

abstract class Rexp
case object ZERO extends Rexp
case object ONE extends Rexp
case class CHAR(c: Char) extends Rexp
case class ALT(r1: Rexp, r2: Rexp) extends Rexp 
case class SEQ(r1: Rexp, r2: Rexp) extends Rexp 
case class STAR(r: Rexp) extends Rexp