group_constraint_extractor.h

 
#ifndef BF_P4C_LOGGING_GROUP_CONSTRAINT_EXTRACTOR_H_
#define BF_P4C_LOGGING_GROUP_CONSTRAINT_EXTRACTOR_H_
 
#include <map>
#include <set>
#include <vector>
 
#include "backends/tofino/bf-p4c/logging/constrained_fields.h"
#include "backends/tofino/bf-p4c/phv/phv_fields.h"
#include "backends/tofino/bf-p4c/phv/utils/utils.h"
 
class PhvInfo;

class GroupConstraintExtractor {
 public:
    using Group = std::vector<ConstrainedSlice>;
 
 protected:
    std::vector<Group> groups;
    std::map<cstring, std::set<unsigned>> fieldToGroupMap;  // Key is name of the field
 
    void processSlice(unsigned groupId, const PHV::FieldSlice &slice,
                      const ConstrainedFieldMap &map);
 
 public:
    std::vector<const Group *> getGroups(const cstring &name) const;
 
    // For a given field, check whether it is contained in any group
    bool isFieldInAnyGroup(const cstring &name) const;
};

class MauGroupExtractor : public GroupConstraintExtractor {
 public:
    using MauGroup = Group;
 
 private:
    bool superClusterContainsOnlySingleField(const PHV::SuperCluster *sc) const;
 
 public:
    MauGroupExtractor(const std::list<PHV::SuperCluster *> &clusterGroups,
                      const ConstrainedFieldMap &map);
};

class EquivalentAlignExtractor : public GroupConstraintExtractor {
 private:
    void processCluster(const PHV::AlignedCluster *cluster, const ConstrainedFieldMap &map);
 
 public:
    EquivalentAlignExtractor(const std::list<PHV::SuperCluster *> &superclusters,
                             const ConstrainedFieldMap &map);
};
 
#endif /* BF_P4C_LOGGING_GROUP_CONSTRAINT_EXTRACTOR_H_ */