/// <summary>
/// Advances the enumerator to the next element of the <see cref="IPartition{T}"/>. If there are no more elements, does nothing.
/// </summary>
/// <param name="partition">The <see cref="IPartition{T}"/> object over which this enumerator is iterating.</param>
public void MoveNext(IPartition <T> partition)
{
if (partition == null || Enumerator == null)
{
return;
}
if (SegmentCount > 0)
{
SegmentCount--;
bool Moved = Enumerator.MoveNext();
Debug.Assert(Moved);
return;
}
SegmentIndex = partition.NextSegmentIndex(SegmentIndex);
if (SegmentIndex < 0)
{
Enumerator = null;
return;
}
Enumerator = partition.GetSegmentEnumerator(SegmentIndex, 0, out SegmentCount);
Enumerator.MoveNext();
Debug.Assert(SegmentCount > 0);
SegmentCount--;
}
/// <summary>
/// Initializes a new instance of the <see cref="PartitionEnumerator{T}"/> class.
/// Creates an instance that enumerates objects starting at the specified position in <see cref="IPartition{T}"/>.
/// </summary>
/// <param name="partition">The enumerated partition.</param>
/// <param name="segmentIndex">The segment index of the position of the first element to enumerate.</param>
/// <param name="elementIndex">The element index of the position of the first element to enumerate.</param>
public PartitionEnumerator(IPartition <T> partition, int segmentIndex, int elementIndex)
{
Debug.Assert(partition.IsValidPosition(segmentIndex, elementIndex, false));
Partition = partition;
SegmentIndex = segmentIndex;
Enumerator = partition.GetSegmentEnumerator(segmentIndex, elementIndex, out SegmentCount);
}
