addTo method

DateTime addTo(DateTime input)

Adds this duration to the given input DateTime.

This is adding this duration precisely and is better than toDuration in most cases.

Implementation

DateTime addTo(DateTime input) {
  var y = input.year + years;
  var m = input.month + months;
  while (m > 12) {
    y++;
    m -= 12;
  }
  final intermediate = DateTime(y, m, input.day, input.hour, input.minute,
      input.second, input.millisecond, input.microsecond);
  final duration = Duration(
    days: weeks * 7 + days,
    hours: hours,
    minutes: minutes,
    seconds: seconds,
  );

  return intermediate.add(duration);
}