reimplementation of scala.util.control.Breaks using Scala 2.8 Continuations

CPSBreaks.scala

trait Breaks {
    import scala.util.continuations.{reset,shift}

    def breakable = reset[Unit,Unit] _
    def break = shift { k: (Unit => Unit) => () }
}

object CPSBreaks extends Application with Breaks {

    breakable {
        println("1")
        breakable {
            println("2")
            break
            println("3")
        }
        println("4")
        break
        println("5")
    }
}

compile with scalac -P:continuations:enable