import java.nio.file.Paths
import scala.annotation.tailrec
import scala.io.Source

case class Entity(farbe: String, nummer: String)

object mo {

  def parseStream(input: Stream[String]): Stream[Entity] = {
    input match {
      case Stream.Empty => Stream.empty
      case "start" #:: color #:: number #:: "end" #:: rest => new Entity(color, number) #:: parseStream(rest)
      case unknown #:: rest => parseStream(rest)
    }
  }

  val lineIterator = Source.fromFile("val.txt").getLines()
  def lineStream : Stream[String] = {
    if (lineIterator.isEmpty) Stream.empty
    else lineIterator.next() #:: lineStream
  }

    def main(args: Array[String]) {
      val entityListLength = parseStream(lineStream).length
      println(entityListLength)
    }
}