progs/app01.scala
author Christian Urban <urbanc@in.tum.de>
Sun, 17 Nov 2019 09:18:47 +0000
changeset 691 991849dfbcb1
parent 400 e4afe3f46c29
permissions -rw-r--r--
updated

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