474 struct SNodeId {  struct
477   explicit SNodeId(int Id) : Id(Id) {}  in SNodeId()  function
478   explicit SNodeId() = default;
481   SNodeId &operator++() { return ++Id, *this; }  in operator ++()  argument
482   SNodeId &operator--() { return --Id, *this; }  in operator --()  argument
483   SNodeId operator+(int Other) const { return SNodeId(Id + Other); }  in operator +()  argument
493   std::vector<SNodeId> LeftMostDescendants;
496   std::vector<SNodeId> KeyRoots;
504   NodeId getIdInRoot(SNodeId Id) const {  in getIdInRoot()
508   const Node &getNode(SNodeId Id) const {  in getNode()
511   SNodeId getLeftMostDescendant(SNodeId Id) const {  in getLeftMostDescendant()
517     return Tree.PostorderIds[getIdInRoot(SNodeId(1))];  in getPostorderOffset()
519   std::string getNodeValue(SNodeId Id) const {  in getNodeValue()
529       SNodeId SI(I + 1);  in setLeftMostDescendants()
535       LeftMostDescendants[I] = SNodeId(Tree.PostorderIds[N.LeftMostDescendant] -  in setLeftMostDescendants()
544     for (SNodeId I(getSize()); I > 0; --I) {  in computeKeyRoots()
545       SNodeId LeftDesc = getLeftMostDescendant(I);  in computeKeyRoots()
581     std::vector<std::pair<SNodeId, SNodeId>> TreePairs;  in getMatchingNodes()
587     TreePairs.emplace_back(SNodeId(S1.getSize()), SNodeId(S2.getSize()));  in getMatchingNodes()
590       SNodeId LastRow, LastCol, FirstRow, FirstCol, Row, Col;  in getMatchingNodes()
614           SNodeId LMD1 = S1.getLeftMostDescendant(Row);  in getMatchingNodes()
615           SNodeId LMD2 = S2.getLeftMostDescendant(Col);  in getMatchingNodes()
645   double getUpdateCost(SNodeId Id1, SNodeId Id2) {  in getUpdateCost()
652     for (SNodeId Id1 : S1.KeyRoots)  in computeTreeDist()
653       for (SNodeId Id2 : S2.KeyRoots)  in computeTreeDist()
657   void computeForestDist(SNodeId Id1, SNodeId Id2) {  in computeForestDist()
659     SNodeId LMD1 = S1.getLeftMostDescendant(Id1);  in computeForestDist()
660     SNodeId LMD2 = S2.getLeftMostDescendant(Id2);  in computeForestDist()
663     for (SNodeId D1 = LMD1 + 1; D1 <= Id1; ++D1) {  in computeForestDist()
665       for (SNodeId D2 = LMD2 + 1; D2 <= Id2; ++D2) {  in computeForestDist()
667         SNodeId DLMD1 = S1.getLeftMostDescendant(D1);  in computeForestDist()
668         SNodeId DLMD2 = S2.getLeftMostDescendant(D2);  in computeForestDist()