private NodeList UpdateNodeStates(NodeList nodes, NodeList backLoopNodes, NodeList candidates)
{
for (INodeCursor nc = nodes.Nodes(); nc.Ok; nc.Next())
{
Node node = nc.Node;
NodeState nodeState = GetNodeState(node);
switch (nodeState)
{
case NodeState.BackLooping:
backLoopNodes.AddFirst(node);
break;
case NodeState.BackLoopingCandidate:
candidates.AddFirst(node);
break;
}
nodeStates[node.Index] = nodeState;
}
return(candidates);
}