143 class Position : public StorageUniquer::BaseStorage {
145   explicit Position(Predicates::Kind kind) : kind(kind) {}  in Position()  function
146   virtual ~Position();
152   Position *getParent() const { return parent; }  in getParent()
159   Position *parent = nullptr;
171     : public PredicateBase<AttributePosition, Position,
185     : public PredicateBase<AttributeLiteralPosition, Position, Attribute,
194 struct ForEachPosition : public PredicateBase<ForEachPosition, Position,
195                                               std::pair<Position *, unsigned>,
209     : public PredicateBase<OperandPosition, Position,
224           OperandGroupPosition, Position,
248 struct OperationPosition : public PredicateBase<OperationPosition, Position,
249                                                 std::pair<Position *, unsigned>,
266   static OperationPosition *get(StorageUniquer &uniquer, Position *parent) {  in get()
285     : public PredicateBase<ResultPosition, Position,
300           ResultGroupPosition, Position,
326 struct TypePosition : public PredicateBase<TypePosition, Position, Position *,
342     : public PredicateBase<TypeLiteralPosition, Position, Attribute,
354     : public PredicateBase<UsersPosition, Position, std::pair<Position *, bool>,
449                            std::tuple<StringRef, ArrayRef<Position *>>,
457   ArrayRef<Position *> getArgs() const { return std::get<1>(key); }  in getArgs()
469     : public PredicateBase<EqualToQuestion, Qualifier, Position *,
563   Position *getRoot() { return OperationPosition::getRoot(uniquer); }  in getRoot()
566   OperationPosition *getOperandDefiningOp(Position *p) {  in getOperandDefiningOp()
573   OperationPosition *getPassthroughOp(Position *p) {  in getPassthroughOp()
579   Position *getAttribute(OperationPosition *p, StringRef name) {  in getAttribute()
584   Position *getAttributeLiteral(Attribute attr) {  in getAttributeLiteral()
588   Position *getForEach(Position *p, unsigned id) {  in getForEach()
593   Position *getOperand(OperationPosition *p, unsigned operand) {  in getOperand()
598   Position *getOperandGroup(OperationPosition *p, Optional<unsigned> group,  in getOperandGroup()
602   Position *getAllOperands(OperationPosition *p) {  in getAllOperands()
607   Position *getResult(OperationPosition *p, unsigned result) {  in getResult()
612   Position *getResultGroup(OperationPosition *p, Optional<unsigned> group,  in getResultGroup()
616   Position *getAllResults(OperationPosition *p) {  in getAllResults()
621   Position *getType(Position *p) { return TypePosition::get(uniquer, p); }  in getType()
625   Position *getTypeLiteral(Attribute attr) {  in getTypeLiteral()
630   UsersPosition *getUsers(Position *p, bool useRepresentative) {  in getUsers()
653   Predicate getEqualTo(Position *pos) {  in getEqualTo()
658   Predicate getNotEqualTo(Position *pos) {  in getNotEqualTo()
663   Predicate getConstraint(StringRef name, ArrayRef<Position *> pos) {  in getConstraint()