public AbstractBTreeRangeIterator(BTreeRangeSingle range)
{
_range = range;
BTreePointer first = range.First();
if (first != null)
{
// we clone here, because we are calling unsafeNext() on BTreePointer
// _cursor is our private copy, we modify it and never pass it out.
_cursor = first.ShallowClone();
}
}
public virtual bool MoveNext()
{
if (ReachedEnd())
{
_current = null;
return(false);
}
if (_current == null)
{
_current = _cursor.ShallowClone();
}
else
{
_cursor.CopyTo(_current);
}
_cursor = _cursor.UnsafeFastNext();
return(true);
}