headerMetrics.h

/*
Collects global and per-definition header metrics. For each
header definition, it loops over each field and unwraps
its type, until the field's bit width can be extracted.
*/
 
#ifndef FRONTENDS_P4_METRICS_HEADERMETRICS_H_
#define FRONTENDS_P4_METRICS_HEADERMETRICS_H_
 
#include "frontends/p4/metrics/metricsStructure.h"
#include "frontends/p4/typeMap.h"
#include "ir/ir.h"
 
namespace P4 {
 
class HeaderMetricsPass : public Inspector {
 private:
    TypeMap *typeMap;
    HeaderMetrics &metrics;
    unsigned totalFieldsNum = 0;
    unsigned totalFieldsSize = 0;
 
 public:
    explicit HeaderMetricsPass(TypeMap *typeMap, Metrics &metricsRef)
        : typeMap(typeMap), metrics(metricsRef.headerMetrics) {
        setName("HeaderMetricsPass");
    }
 
    void postorder(const IR::Type_Header *header) override;
    void postorder(const IR::P4Program * /*program*/) override;
};
 
}  // namespace P4
 
#endif /* FRONTENDS_P4_METRICS_HEADERMETRICS_H_ */