HLTGlobalStatus.h

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#ifndef DataFormats_Common_HLTGlobalStatus_h
#define DataFormats_Common_HLTGlobalStatus_h

#include "DataFormats/Common/interface/HLTenums.h"
#include "DataFormats/Common/interface/HLTPathStatus.h"

#include <vector>
#include <ostream>

namespace edm {
  class HLTGlobalStatus {
  private:
    std::vector<HLTPathStatus> paths_;

  public:
    HLTGlobalStatus(const unsigned int n = 0) : paths_(n) {}

    unsigned int size() const { return paths_.size(); }

    void reset() {
      const unsigned int n(size());
      for (unsigned int i = 0; i != n; ++i)
        paths_[i].reset();
    }

    // global "state" variables calculated on the fly!

    bool wasrun() const { return State(0); }
    bool accept() const { return State(1); }
    bool error() const { return State(2); }

    // get hold of individual elements, using safe indexing with "at" which throws!

    const HLTPathStatus& at(const unsigned int i) const { return paths_.at(i); }
    HLTPathStatus& at(const unsigned int i) { return paths_.at(i); }
    const HLTPathStatus& operator[](const unsigned int i) const { return paths_.at(i); }
    HLTPathStatus& operator[](const unsigned int i) { return paths_.at(i); }

    bool wasrun(const unsigned int i) const { return at(i).wasrun(); }
    bool accept(const unsigned int i) const { return at(i).accept(); }
    bool error(const unsigned int i) const { return at(i).error(); }

    hlt::HLTState state(const unsigned int i) const { return at(i).state(); }
    unsigned int index(const unsigned int i) const { return at(i).index(); }
    void reset(const unsigned int i) { at(i).reset(); }
    void swap(HLTGlobalStatus& other) { paths_.swap(other.paths_); }
    HLTGlobalStatus& operator=(HLTGlobalStatus const& rhs) {
      HLTGlobalStatus temp(rhs);
      this->swap(temp);
      return *this;
    }

  private:
    bool State(unsigned int icase) const {
      bool flags[3] = {false, false, false};
      const unsigned int n(size());
      for (unsigned int i = 0; i != n; ++i) {
        const hlt::HLTState s(state(i));
        if (s != hlt::Ready) {
          flags[0] = true;  // at least one trigger was run
          if (s == hlt::Pass) {
            flags[1] = true;  // at least one trigger accepted
          } else if (s == hlt::Exception) {
            flags[2] = true;  // at least one trigger with error
          }
        }
      }
      return flags[icase];
    }
  };

  inline void swap(HLTGlobalStatus& lhs, HLTGlobalStatus& rhs) { lhs.swap(rhs); }

  inline std::ostream& operator<<(std::ostream& ost, const HLTGlobalStatus& hlt) {
    std::vector<std::string> text(4);
    text[0] = "n";
    text[1] = "1";
    text[2] = "0";
    text[3] = "e";
    const unsigned int n(hlt.size());
    for (unsigned int i = 0; i != n; ++i)
      ost << text.at(hlt.state(i));
    return ost;
  }

}  // namespace edm

// The standard allows us to specialize std::swap for non-templates.
// This ensures that HLTGlobalStatus::swap() will be used in algorithms.

namespace std {
  template <>
  inline void swap(edm::HLTGlobalStatus& lhs, edm::HLTGlobalStatus& rhs) {
    lhs.swap(rhs);
  }
}  // namespace std

#endif  // DataFormats_Common_HLTGlobalStatus_h