package mtmc.emulator

import mtmc.util.Runnable

class RewindStep {
  var subSteps: MutableList<Runnable?> = ArrayList<Runnable?>()

  fun rewind() {
    subSteps.reversed().forEach({ obj: Runnable? -> obj!!.invoke() })
  }

  fun addSubStep(subStep: Runnable?) {
    subSteps.add(subStep)
  }
}