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progs/app51.scala
author Christian Urban <christian dot urban at kcl dot ac dot uk>
Tue, 15 Oct 2013 22:14:04 +0100
changeset 144 0cb61bed557d
parent 93 4794759139ea
child 261 24531cfaa36a
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abstract class Rexp
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case object NULL extends Rexp













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case object EMPTY extends Rexp













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case class CHAR(c: Char) extends Rexp













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case class ALT(r1: Rexp, r2: Rexp) extends Rexp













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case class SEQ(r1: Rexp, r2: Rexp) extends Rexp













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case class STAR(r: Rexp) extends Rexp















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