57     : G(&G), F(F), DFSNumber(0), LowLink(0) {  in Node()
160   N.DFSNumber = N.LowLink = -1;  in insert()
382   N->LowLink = N->DFSNumber = 1;  in internalDFS()
385     assert(N->DFSNumber != 0 && "We should always assign a DFS number "  in internalDFS()
412       if (ChildN.DFSNumber == 0) {  in internalDFS()
419         ChildN.LowLink = ChildN.DFSNumber = NextDFSNumber++;  in internalDFS()
435     if (N->LowLink == N->DFSNumber) {  in internalDFS()
474     N->DFSNumber = 0;  in removeIntraSCCEdge()
494     if (N->DFSNumber == 0)  in removeIntraSCCEdge()
586   while (!NodeStack.empty() && NodeStack.back()->DFSNumber > RootN->DFSNumber) {  in formSCC()
628     } while (N->DFSNumber != 0);  in getNextSCCInPostOrder()
630     N->LowLink = N->DFSNumber = 1;  in getNextSCCInPostOrder()
635     assert(N->DFSNumber != 0 && "We should always assign a DFS number "  in getNextSCCInPostOrder()
641       if (ChildN.DFSNumber == 0) {  in getNextSCCInPostOrder()
650         ChildN.LowLink = ChildN.DFSNumber = NextDFSNumber++;  in getNextSCCInPostOrder()
665     if (N->LowLink == N->DFSNumber)  in getNextSCCInPostOrder()