369 struct ChainEdge {  struct
375   explicit ChainEdge(JumpT *Jump)  in ChainEdge()  argument
379   ChainT *srcChain() const { return SrcChain; }  in srcChain()
381   ChainT *dstChain() const { return DstChain; }  in dstChain()
383   bool isSelfEdge() const { return SrcChain == DstChain; }  in isSelfEdge()
385   const std::vector<JumpT *> &jumps() const { return Jumps; }  in jumps()
387   void appendJump(JumpT *Jump) { Jumps.push_back(Jump); }  in appendJump()
389   void moveJumps(ChainEdge *Other) {  in moveJumps()
395   void changeEndpoint(ChainT *From, ChainT *To) {  in changeEndpoint()
402   bool hasCachedMergeGain(ChainT *Src, ChainT *Dst) const {  in hasCachedMergeGain()
406   MergeGainT getCachedMergeGain(ChainT *Src, ChainT *Dst) const {  in getCachedMergeGain()
410   void setCachedMergeGain(ChainT *Src, ChainT *Dst, MergeGainT MergeGain) {  in setCachedMergeGain()
420   void invalidateCache() {  in invalidateCache()
425   void setMergeGain(MergeGainT Gain) { CachedGain = Gain; }  in setMergeGain()
427   MergeGainT getMergeGain() const { return CachedGain; }  in getMergeGain()
429   double gain() const { return CachedGain.score(); }  in gain()
433   ChainT *SrcChain{nullptr};
435   ChainT *DstChain{nullptr};
437   std::vector<JumpT *> Jumps;
439   MergeGainT CachedGain;
445   MergeGainT CachedGainForward;
446   MergeGainT CachedGainBackward;
448   bool CacheValidForward{false};
449   bool CacheValidBackward{false};