matcher.region(pos, end)

        when {
          hour == -1 && matcher.usePattern(TIME_PATTERN).matches() -> {
            hour = matcher.group(1).toInt()
            minute = matcher.group(2).toInt()
            second = matcher.group(3).toInt()
          }
          dayOfMonth == -1 && matcher.usePattern(DAY_OF_MONTH_PATTERN).matches() -> {
            dayOfMonth = matcher.group(1).toInt()
          }