equals method

bool equals(DateTimeZone x, DateTimeZone y)

Compares two time zones for equality according to the options and interval provided to this comparer.

x: The first DateTimeZone to compare. y: The second DateTimeZone to compare. Returns: true if the specified time zones are equal under the options and interval of this comparer; otherwise, false.

Implementation

bool equals(DateTimeZone x, DateTimeZone y) {
  if (identical(x, y)) {
    return true;
  }

  if (x == y) {
    return true;
  }

  // If we ever need to port this to a platform which doesn't support LINQ,
  // we'll need to reimplement this. Until then, it would seem pointless...
  // Dart: that day is TODAY! todo: is this inefficient?
  var ax = _getIntervals(x); //.toList(growable: false);
  var by = _getIntervals(y); //.toList(growable: false);
  // Need a way to know if length can be efficiently computed or not
  // if (ax.length != by.length) return false;

  var a = ax.iterator;
  var b = by.iterator;
  // if (a.length != b.length) return false;
  //    while(a.moveNext() || b.moveNext()) {
  //      if (a.current == null || b.current == null) return false;
  //      if (!zoneIntervalComparer.Equals(a.current, b.current)) return false;
  //    }

  while (a.moveNext())
  {
    if (!b.moveNext() || !_zoneIntervalComparer.equals(a.current, b.current))
      return false;
  }
  return !b.moveNext();

  // return true;
  // return GetIntervals(x).SequenceEqual(GetIntervals(y), zoneIntervalComparer);
}