public ConcatenationRopeEnumerator(ConcatenationRope concatenationRope, int start)
{
this.initialRope = concatenationRope;
this.toTraverse = new RopeDeque();
this.toTraverse.Add(concatenationRope);
this.currentRope = null;
this.initStart = start;
this.Init();
if (start < 0 || start > concatenationRope.Length())
{
throw new ArgumentOutOfRangeException("Rope index out of range: " + start);
}
this.MoveNext(start);
}
