native time

func getms {
    0 time
}

func sleep {
    time pop
}

func delay {
    time pop
}

func delays {
    1000 * time pop
}

def Timer 
construct Timer {
    startMS
    stopMS
    timeTakenTMP
    ;
    start {
        with this ;
        getms this =startMS
        null this =timeTakenTMP
    }
    end {
        with this ;
        getms this =stopMS
        null this =timeTakenTMP
    }
    timeTaken {
        with this ;
        this timeTakenTMP null eq not if {
            this timeTakenTMP 2 stop
        }
        this startMS this stopMS eq if {
            0 dup this =timeTakenTMP
            2 stop
        }
        this stopMS this startMS - dup this =timeTakenTMP
    }
} =Timer