48 struct EqualityCache {  struct
49   EqualityCache(Runtime& runtime,  in EqualityCache()  function
69   std::optional<bool> Query(const Pair& comparison) {  in Query()
98   void AllSame(const std::vector<Pair>& comparisons) {  in AllSame()
104   void AllDifferent(const std::vector<Pair>& comparisons) {  in AllDifferent()
110   bool DistinctHashes(Id id1, Id id2) {  in DistinctHashes()
117   Id Find(Id id) {  in Find()
135   size_t GetRank(Id id) {  in GetRank()
140   void SetRank(Id id, size_t r) {  in SetRank()
148   void Union(Id id1, Id id2) {  in Union()
190   void Disunion(Id id1, Id id2) {  in Disunion()
228 struct SimpleEqualityCache {  argument