tryParseDayTime static method

XPathDuration? tryParseDayTime(String value)

Attempts to parse a string representation of a dayTimeDuration.

Implementation

static XPathDuration? tryParseDayTime(String value) {
  final match = _dayTimeDurationRegExp.firstMatch(value);
  if (match == null) return null;

  if (match.group(2) == null &&
      match.group(3) == null &&
      match.group(4) == null &&
      match.group(5) == null) {
    return null;
  }

  final negative = match.group(1) == '-';
  final days = int.tryParse(match.group(2) ?? '0') ?? 0;
  final hours = int.tryParse(match.group(3) ?? '0') ?? 0;
  final minutes = int.tryParse(match.group(4) ?? '0') ?? 0;
  final secondsDouble = double.tryParse(match.group(5) ?? '0') ?? 0.0;

  final duration = Duration(
    days: days,
    hours: hours,
    minutes: minutes,
    microseconds: (secondsDouble * Duration.microsecondsPerSecond).round(),
  );
  final totalUs = duration.inMicroseconds * (negative ? -1 : 1);
  return XPathDuration.dayTime(totalUs);
}