ストップウォッチ

StopWatch.groovy

class StopWatch {
    def lapTimes = []
    def startTime
    def stopTime

    def cur   = { System.currentTimeMillis() }
    def start = { startTime = cur() }
    def stop  = { stopTime  = cur() }
    def elapsedTime    = { stopTime - startTime }
    def elapsedLapTime = { lapTimes[it].time - startTime }
    
    def lap   = {
    // lapTimes.add(new LapTime(name: it, time: cur())) // これがダメな理由がまだ勉強不足で分からない
        def l = new LapTime()
        l.name = it
        l.time = cur()
        lapTimes.add(l)
        lapTimes.size()
    }
    class LapTime {
        def name
        def time
    }
}

// テスト用メソッド
Long.metaClass.toString = {"${delegate} ミリ秒経過"}

// Exec
watch = new StopWatch()

sleepTime = 100
println "■ 計測 $sleepTime 秒スリープ"
watch.start()
sleep(sleepTime)
watch.stop()
println "  ${watch.elapsedTime().toString()}"

println "■ ラップ計測 $sleepTime 秒スリープ"
watch.start()
sleep(sleepTime)
watch.lap('1st Lap')
sleep(sleepTime)
watch.lap('2nd Lap')
sleep(sleepTime)
watch.stop()
println " ALL\t: ${watch.elapsedTime().toString()}"

watch.lapTimes.eachWithIndex() { it, index ->
    println " ${it.name}\t: ${watch.elapsedLapTime(index).toString()}"
}