constrained_fields.h

 
#ifndef BACKENDS_TOFINO_BF_P4C_LOGGING_CONSTRAINED_FIELDS_H_
#define BACKENDS_TOFINO_BF_P4C_LOGGING_CONSTRAINED_FIELDS_H_
 
#include <map>
 
#include "backends/tofino/bf-p4c/phv/phv_fields.h"
#include "backends/tofino/bf-p4c/phv/utils/utils.h"
#include "phv_schema.h"
 
class LoggableEntity {
 public:
    using Constraint = Logging::Phv_Schema_Logger::Constraint;
 
 protected:
    Constraint *logger = nullptr;
 
 public:
    Constraint *getLogger() { return logger; }
 
    bool hasLoggedConstraints() const { return logger->get_base_constraint().size() > 0; }
};
 
class ConstrainedField;
 
class ConstrainedSlice : public LoggableEntity, public LiftCompare<ConstrainedSlice> {
 private:
    const ConstrainedField *parent;
    le_bitrange range;
 
    Constraints::AlignmentConstraint alignment;
    Constraints::ContainerSizeConstraint containerSize;
 
 public:
    ConstrainedSlice(const ConstrainedField &parent, le_bitrange range);
 
    const le_bitrange &getRange() const { return range; }
    const ConstrainedField &getParent() const { return *parent; }
 
    void setAlignment(const Constraints::AlignmentConstraint &alignment);
    const Constraints::AlignmentConstraint &getAlignment() const { return alignment; }
 
    void setContainerSize(const Constraints::ContainerSizeConstraint &containerSize);
    const Constraints::ContainerSizeConstraint getContainerSize() const { return containerSize; }
 
    bool operator<(const ConstrainedSlice &other) const override;
    bool operator==(const ConstrainedSlice &other) const override;
};
 
class ConstrainedField : public LoggableEntity {
 private:
    cstring name;
    std::vector<ConstrainedSlice> slices;
 
    Constraints::SolitaryConstraint solitary;
    Constraints::AlignmentConstraint alignment;
    Constraints::DigestConstraint digest;
    Constraints::ContainerSizeConstraint containerSize;
 
    bool deparsedBottomBits = false;
    bool noSplit = false;
    bool noOverlay = false;
    bool exactContainer = false;
    bool noHoles = false;
    bool sameContainerGroup = false;
 
 public:
    ConstrainedField() {}
    explicit ConstrainedField(const cstring &name);
 
    const cstring &getName() const { return name; }
 
    void addSlice(const ConstrainedSlice &slice);
    std::vector<ConstrainedSlice> &getSlices() { return slices; }
    const std::vector<ConstrainedSlice> &getSlices() const { return slices; }
 
    void setSolitary(const Constraints::SolitaryConstraint &solitary);
    const Constraints::SolitaryConstraint &getSolitary() const { return solitary; }
 
    void setAlignment(const Constraints::AlignmentConstraint &alignment);
    const Constraints::AlignmentConstraint &getAlignment() const { return alignment; }
 
    void setDigest(const Constraints::DigestConstraint &digest);
    const Constraints::DigestConstraint &getDigest() const { return digest; }
 
    void setContainerSize(const Constraints::ContainerSizeConstraint &containerSize);
    const Constraints::ContainerSizeConstraint getContainerSize() const { return containerSize; }
 
    void setBottomBits(bool b);
    bool hasBottomBits() const { return deparsedBottomBits; }
 
    void setNoSplit(bool b);
    bool hasNoSplit() const { return noSplit; }
 
    void setNoOverlay(bool b);
    bool hasNoOverlay() const { return noOverlay; }
 
    void setExactContainer(bool b);
    bool hasExactContainer() const { return exactContainer; }
 
    void setNoHoles(bool b);
    bool hasNoHoles() const { return noHoles; }
 
    void setSameContainerGroup(bool b);
    bool hasSameContainerGroup() { return sameContainerGroup; }
};
 
typedef std::map<cstring, ConstrainedField> ConstrainedFieldMap;
 
class ConstrainedFieldMapBuilder {
 public:
    static ConstrainedFieldMap buildMap(const PhvInfo &phv,
                                        const std::list<PHV::SuperCluster *> &groups);
};
 
#endif /* BACKENDS_TOFINO_BF_P4C_LOGGING_CONSTRAINED_FIELDS_H_ */