NodeInfo GetOrCreateNodeInfo(int node) {
NodeInfo nodeInfo;
if (!nodeInfoDictionary.TryGetValue(node, out nodeInfo)) {
nodeInfo = new NodeInfo();
nodeInfoDictionary[node] = nodeInfo;
}
return nodeInfo;
}
void DisconnectNodeFromGraph(int u, NodeInfo uNodeInfo) {
foreach (int v in uNodeInfo.OutEdges)
nodeInfoDictionary[v].RemoveInEdge(u);
foreach (int v in uNodeInfo.OutConstrainedEdges)
nodeInfoDictionary[v].RemoveInConstrainedEdge(u);
foreach (int v in uNodeInfo.InEdges)
nodeInfoDictionary[v].RemoveOutEdge(u);
foreach (int v in uNodeInfo.InConstrainedEdges)
nodeInfoDictionary[v].RemoveOutConstrainedEdge(u);
nodeInfoDictionary.Remove(u);
}
void AddNodeToBucketsSourcesAndSinks(int v, NodeInfo nodeInfo) {
if (nodeInfo.InDegree == 0)
sources.Insert(v);
else if (nodeInfo.OutDegree == 0)
sinks.Insert(v);
else if (nodeInfo.InDegreeOfConstrainedEdges == 0)
GetOrCreateBucket(nodeInfo.DeltaDegree).Insert(v);
}
