progs/app01.scala
author Christian Urban <christian dot urban at kcl dot ac dot uk>
Fri, 17 Oct 2014 13:44:50 +0100 (2014-10-17)
changeset 285 8a222559278f
parent 263 92e6985018ae
child 400 e4afe3f46c29
permissions -rw-r--r--
updated
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
263
92e6985018ae updated
Christian Urban <christian dot urban at kcl dot ac dot uk>
parents:
diff changeset
     1
abstract class Rexp
92e6985018ae updated
Christian Urban <christian dot urban at kcl dot ac dot uk>
parents:
diff changeset
     2
case object NULL extends Rexp
92e6985018ae updated
Christian Urban <christian dot urban at kcl dot ac dot uk>
parents:
diff changeset
     3
case object EMPTY extends Rexp
92e6985018ae updated
Christian Urban <christian dot urban at kcl dot ac dot uk>
parents:
diff changeset
     4
case class CHAR(c: Char) extends Rexp
92e6985018ae updated
Christian Urban <christian dot urban at kcl dot ac dot uk>
parents:
diff changeset
     5
case class ALT(r1: Rexp, r2: Rexp) extends Rexp 
92e6985018ae updated
Christian Urban <christian dot urban at kcl dot ac dot uk>
parents:
diff changeset
     6
case class SEQ(r1: Rexp, r2: Rexp) extends Rexp 
92e6985018ae updated
Christian Urban <christian dot urban at kcl dot ac dot uk>
parents:
diff changeset
     7
case class STAR(r: Rexp) extends Rexp