Step() private method

private Step ( ) : bool
return bool
TreeIterator Class Documentation
Example #1
0
        private bool Step()
        {
            if (_tree == null)
            {
                return(false);
            }
            if (_sub != null)
            {
                if (_sub.Step())
                {
                    return(true);
                }
                _sub = null;
            }

            if (_index < 0 && !_hasVisitedTree && _order == Order.PREORDER)
            {
                _hasVisitedTree = true;
                return(true);
            }

            while (++_index < _tree.MemberCount)
            {
                Tree e = (_tree.Members[_index] as Tree);
                if (e != null)
                {
                    _sub = new TreeIterator(e, _order, _visitTreeNodes);
                    if (_sub.HasNextTreeEntry())
                    {
                        return(true);
                    }
                    _sub = null;
                    continue;
                }
                return(true);
            }

            if (_index == _tree.MemberCount && !_hasVisitedTree && _order == Order.POSTORDER)
            {
                _hasVisitedTree = true;
                return(true);
            }

            return(false);
        }