easy speech recognition with command-line based swift app

speech.swift

import Foundation  
import AppKit  
class Dispatcher:  NSObject, NSSpeechRecognizerDelegate {  
    var stop: Bool  
    override init () {stop = false}  
    func speechRecognizer(_ sender: NSSpeechRecognizer, didRecognizeCommand command: String)  
  {  
        print("command: \(command)")  
        stop = true  
    }  
}  
let dispatcher = Dispatcher()  
let recognizer = NSSpeechRecognizer()!  
recognizer.delegate = dispatcher  
recognizer.commands = ["rock", "paper", "scissors"]  
recognizer.startListening()
recognizer.displayedCommandsTitle = "test"
let loop = RunLoop.current  
let mode = loop.currentMode ?? RunLoop.Mode.default  
while loop.run(mode:mode, before: Date(timeIntervalSinceNow: 0.1))  
      && !dispatcher.stop {}