private BidirectionalDictionary(int size, IEqualityComparer <TFirst> firstKeyComparer, IEqualityComparer <TSecond> secondKeyComparer, BidirectionalDictionary <TSecond, TFirst> reverse)
{
if (size > 0)
{
_buckets = new int[size];
_entries = new Entry[size];
}
else
{
_buckets = HashHelpers.SizeOneIntArray;
_entries = Array.Empty <Entry>();
}
if (firstKeyComparer != EqualityComparer <TFirst> .Default)
{
_comparer = firstKeyComparer;
}
if (reverse == null)
{
_shared = new BidirectionalDictionaryShared();
_reverse = new BidirectionalDictionary <TSecond, TFirst>(size, secondKeyComparer, firstKeyComparer, this);
}
else
{
_shared = reverse._shared;
_reverse = reverse;
}
}
internal KeyCollection(BidirectionalDictionary <TFirst, TSecond> bidirectionalDictionary)
{
_bidirectionalDictionary = bidirectionalDictionary;
}