goto.scala

import util.continuations._
import collection.mutable.Map

object Goto {
  val m = Map[Symbol, (Unit => Unit)]()
  def label(s: Symbol) = shift{ k: (Unit => Unit) => m(s) = k; k() }
  def goto(s: Symbol) = m(s)()
}

object GotoDemo extends App {
  import Goto._
  reset {
    var i = 0
    label('foo)
    println(i)
    i += 1
    if (i < 10) goto('foo)
  }
}