An Akka actor to handle Regex pattern parsing

RegexWorkerActor.scala

package io.jacobappleton.compilers.server.workers

import akka.actor.{Actor, ActorLogging}
import io.jacobappleton.compilers.automata.DFAPrinter
import io.jacobappleton.compilers.regex.Regex
import io.jacobappleton.compilers.server.workers.RegexWorkerActor.RegexResponse
import spray.json.DefaultJsonProtocol

class RegexWorkerActor extends Actor with ActorLogging {
  def receive = {
    case s: String =>
      log.info(s"Parsing Regex pattern: $s")
      val printer = new DFAPrinter(new Regex(s).toNFA().toDFA())
      sender ! RegexResponse(printer.printGraph(), printer.toTable())
  }
}

object RegexWorkerActor {
  case class RegexResponse (graph: String, table: String)
}

object RegexWorkerJsonProtocol extends DefaultJsonProtocol {
  implicit val RegexResponseFormat = jsonFormat2(RegexResponse)
}