Calculator.h

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/*
  Copyright (C) 2002-2026 CERN for the benefit of the ATLAS collaboration
*/
 
// contact: jmaurer@cern.ch
 
#ifndef TRIGGLOBALEFFICIENCYCORRECTION_CALCULATOR_H
#define TRIGGLOBALEFFICIENCYCORRECTION_CALCULATOR_H 1
 
#include <algorithm>
#include <functional>
#include <map>
 
#include "AsgMessaging/AsgMessaging.h"
#include "TrigGlobalEfficiencyCorrection/Efficiencies.h"
#include "TrigGlobalEfficiencyCorrection/ImportData.h"
#include "TrigGlobalEfficiencyCorrection/TrigGlobalEfficiencyCorrectionTool.h"
#include <flat_set>
 
namespace TrigGlobEffCorr {
 
class Lepton;
 
class Calculator : public asg::AsgMessaging {
  using LeptonList = TrigGlobalEfficiencyCorrectionTool::LeptonList;
  using TrigDef = TrigGlobEffCorr::ImportData::TrigDef;
  using GlobEffFunc = std::function<bool(Calculator*, const LeptonList&,
                                         unsigned, Efficiencies&)>;
 
 public:
  Calculator(TrigGlobalEfficiencyCorrectionTool& parent,
             unsigned nPeriodsToReserve);
  bool addPeriod(ImportData& data,
                 const std::pair<unsigned, unsigned>& boundaries,
                 const std::string& combination, bool useToys,
                 std::size_t& uniqueElectronLeg, std::size_t& uniquePhotonLeg);
  bool compute(TrigGlobalEfficiencyCorrectionTool& parent,
               const LeptonList& leptons, unsigned runNumber,
               Efficiencies& efficiencies);
  bool checkTriggerMatching(TrigGlobalEfficiencyCorrectionTool& parent,
                            bool& matched, const LeptonList& leptons,
                            unsigned runNumber);
  bool checkTriggerMatching(TrigGlobalEfficiencyCorrectionTool& parent, 
                            bool& matched, 
                            std::unordered_map<std::string, bool>* matched_per_trigger, 
                            const LeptonList& leptons, unsigned runNumber);
  bool getRelevantTriggersForUser(TrigGlobalEfficiencyCorrectionTool& parent,
                                  std::vector<std::string>& triggers,
                                  unsigned runNumber);
 
  struct Period {
    const std::pair<unsigned, unsigned> m_boundaries;
    GlobEffFunc m_formula;
    std::vector<TrigDef>
        m_triggers;  
    Period(const decltype(m_boundaries)& b, decltype(m_formula)&& f,
           decltype(m_triggers)&& t = {})
        : m_boundaries(b), m_formula(std::move(f)), m_triggers(std::move(t)) {}
  };
 
 private:
  TrigGlobalEfficiencyCorrectionTool*
      m_parent{};  
 
  std::vector<Period> m_periods;
  std::map<std::pair<const Lepton*, std::size_t>, Efficiencies>
      m_cachedEfficiencies;  // not thread safe
  bool m_forceUnitSF{};        // not thread safe
 
  bool aboveThreshold(const Lepton& p, std::size_t leg) const {
    return m_parent->aboveThreshold(p, leg);
  }
  template <typename Trig1L>
  auto getLoosestLegAboveThreshold(const Lepton& lepton,
                                   const std::flat_set<Trig1L>& trigs, bool& success)
      -> std::enable_if_t<Trig1L::is1L(), std::size_t> {
    return m_parent->getLoosestLegAboveThreshold(
        lepton, Trig1L::anonymize(trigs), success);
  }
  Efficiencies getCachedTriggerLegEfficiencies(const Lepton& lepton,
                                               unsigned runNumber,
                                               std::size_t leg, bool& success);
  bool fillListOfLegsFor(const Lepton& lepton,
                         const std::vector<TrigDef>& triggers,
                         std::flat_set<std::size_t>& validLegs) const;
  bool canTriggerBeFired(
      const TrigDef& trig,
      const std::vector<std::flat_set<std::size_t> >& firedLegs) const;
  const Period* getPeriod(unsigned runNumber) const;
  bool findUniqueLeg(xAOD::Type::ObjectType obj, std::size_t& uniqueLeg,
                     const std::vector<TrigDef>& defs);

  template <typename Trig1L>
  auto globalEfficiency(const LeptonList&, unsigned, const Trig1L,
                        Efficiencies&)
      -> std::enable_if_t<Trig1L::is1L(), bool>;
  template <typename Trig1L_obj1, typename Trig1L_obj2>
  auto globalEfficiency(const LeptonList&, unsigned, const Trig1L_obj1 trig1,
                        const Trig1L_obj2 trig2, Efficiencies&)
      -> std::enable_if_t<Trig1L_obj1::is1L() && Trig1L_obj2::is1L() &&
                              Trig1L_obj1::object() != Trig1L_obj2::object(),
                          bool>;
  template <typename Trig1L>
  auto globalEfficiency(const LeptonList&, unsigned, const std::flat_set<Trig1L>&,
                        Efficiencies&)
      -> std::enable_if_t<Trig1L::is1L(), bool>;
  template <typename Trig1L_obj1, typename Trig1L_obj2>
  auto globalEfficiency(const LeptonList&, unsigned,
                        const std::flat_set<Trig1L_obj1>& trigs1,
                        const std::flat_set<Trig1L_obj2>& trigs2, Efficiencies&)
      -> std::enable_if_t<Trig1L_obj1::is1L() && Trig1L_obj2::is1L() &&
                              Trig1L_obj1::object() != Trig1L_obj2::object(),
                          bool>;
  template <typename Trig2Lmix>
  auto globalEfficiency(const LeptonList&, unsigned, const Trig2Lmix,
                        Efficiencies&)
      -> std::enable_if_t<Trig2Lmix::is2Lmix(), bool>;
  template <typename Trig2Lsym>
  auto globalEfficiency(const LeptonList&, unsigned, const Trig2Lsym,
                        Efficiencies&)
      -> std::enable_if_t<Trig2Lsym::is2Lsym(), bool>;
  template <typename Trig2Lasym>
  auto globalEfficiency(const LeptonList&, unsigned, const Trig2Lasym,
                        Efficiencies&)
      -> std::enable_if_t<Trig2Lasym::is2Lasym(), bool>;
  template <typename Trig2Lmix, typename Trig1L_obj1, typename Trig1L_obj2>
  auto globalEfficiency(const LeptonList&, unsigned, const Trig2Lmix,
                        const std::flat_set<Trig1L_obj1>&,
                        const std::flat_set<Trig1L_obj2>&, Efficiencies&)
      -> std::enable_if_t<Trig2Lmix::is2Lmix() && Trig1L_obj1::is1L() &&
                              Trig2Lmix::object1() == Trig1L_obj1::object() &&
                              Trig1L_obj2::is1L() &&
                              Trig2Lmix::object2() == Trig1L_obj2::object(),
                          bool>;
  template <typename Trig2L, typename Trig1L>
  inline auto globalEfficiency(const LeptonList&, unsigned, const Trig2L,
                               const Trig1L, Efficiencies&)
      -> std::enable_if_t<Trig2L::is2Lnomix() && Trig1L::is1L() &&
                              Trig2L::object() == Trig1L::object(),
                          bool>;
  template <typename Trig2Lsym, typename Trig1L>
  auto globalEfficiency(const LeptonList&, unsigned, const Trig2Lsym,
                        const std::flat_set<Trig1L>&, Efficiencies&)
      -> std::enable_if_t<Trig2Lsym::is2Lsym() && Trig1L::is1L() &&
                              Trig1L::object() == Trig2Lsym::object(),
                          bool>;
  template <typename Trig2Lasym, typename Trig1L>
  auto globalEfficiency(const LeptonList&, unsigned, const Trig2Lasym,
                        const std::flat_set<Trig1L>&, Efficiencies&)
      -> std::enable_if_t<Trig2Lasym::is2Lasym() && Trig1L::is1L() &&
                              Trig1L::object() == Trig2Lasym::object(),
                          bool>;
  template <typename Trig2Lsym, typename Trig1L>
  auto globalEfficiency(const LeptonList&, unsigned, const Trig2Lsym,
                        const Trig2Lsym, const std::flat_set<Trig1L>&, Efficiencies&)
      -> std::enable_if_t<Trig2Lsym::is2Lsym() && Trig1L::is1L() &&
                              Trig1L::object() == Trig2Lsym::object(),
                          bool>;
  template <typename Trig2Lasym, typename Trig2Lsym, typename Trig1L>
  auto globalEfficiency(const LeptonList&, unsigned, const Trig2Lasym,
                        const Trig2Lsym, const std::flat_set<Trig1L>&, Efficiencies&)
      -> std::enable_if_t<Trig2Lasym::is2Lasym() && Trig2Lsym::is2Lsym() &&
                              Trig2Lsym::object() == Trig2Lasym::object() &&
                              Trig1L::is1L() &&
                              Trig1L::object() == Trig2Lasym::object(),
                          bool>;
  template <typename Trig3Lsym>
  auto globalEfficiency(const LeptonList&, unsigned, const Trig3Lsym,
                        Efficiencies&)
      -> std::enable_if_t<Trig3Lsym::is3Lsym(), bool>;
  template <typename Trig3Lhalfsym>
  auto globalEfficiency(const LeptonList&, unsigned, const Trig3Lhalfsym,
                        Efficiencies&)
      -> std::enable_if_t<Trig3Lhalfsym::is3Lhalfsym(), bool>;
  template <typename Trig2L, typename Trig2Lmix>
  auto globalEfficiency(const LeptonList&, unsigned, const Trig2L,
                        const Trig2Lmix, Efficiencies&)
      -> std::enable_if_t<Trig2L::is2Lnomix() && Trig2Lmix::is2Lmix() &&
                              (Trig2Lmix::object1() == Trig2L::object() ||
                               Trig2Lmix::object2() == Trig2L::object()),
                          bool>;
  template <typename Trig2L_obj1, typename Trig2L_obj2, typename Trig2Lmix>
  auto globalEfficiency(const LeptonList&, unsigned, const Trig2L_obj1,
                        const Trig2L_obj2, const Trig2Lmix, Efficiencies&)
      -> std::enable_if_t<Trig2Lmix::is2Lmix() && Trig2L_obj1::is2Lnomix() &&
                              Trig2L_obj1::object() == Trig2Lmix::object1() &&
                              Trig2L_obj2::is2Lnomix() &&
                              Trig2L_obj2::object() == Trig2Lmix::object2(),
 
                          bool>;
  template <typename Trig2L_obj1, typename Trig2L_obj2, typename Trig2Lmix,
            typename Trig1L_obj1, typename Trig1L_obj2>
  auto globalEfficiency(const LeptonList&, unsigned, const Trig2L_obj1,
                        const Trig2L_obj2, const Trig2Lmix,
                        const std::flat_set<Trig1L_obj1>&,
                        const std::flat_set<Trig1L_obj2>&, Efficiencies&)
      -> std::enable_if_t<Trig2Lmix::is2Lmix() && Trig2L_obj1::is2Lnomix() &&
                              Trig2L_obj1::object() == Trig2Lmix::object1() &&
                              Trig2L_obj2::is2Lnomix() &&
                              Trig2L_obj2::object() == Trig2Lmix::object2() &&
                              Trig1L_obj1::is1L() &&
                              Trig1L_obj1::object() == Trig2Lmix::object1() &&
                              Trig1L_obj2::is1L() &&
                              Trig1L_obj2::object() == Trig2Lmix::object2(),
 
                          bool>;
  template <typename Trig2L_obj1, typename Trig2Lsym_obj1, typename Trig2L_obj2,
            typename Trig2Lsym_obj2, typename Trig2Lmix, typename Trig1L_obj1,
            typename Trig1L_obj2>
  auto globalEfficiency(const LeptonList&, unsigned, const Trig2L_obj1,
                        const Trig2Lsym_obj1, const Trig2L_obj2,
                        const Trig2Lsym_obj2, const Trig2Lmix, const Trig2Lmix,
                        const std::flat_set<Trig1L_obj1>&,
                        const std::flat_set<Trig1L_obj2>&, Efficiencies&)
      -> std::enable_if_t<
          Trig2Lmix::is2Lmix() && Trig2L_obj1::is2Lnomix() &&
              Trig2L_obj1::object() == Trig2Lmix::object1() &&
              Trig2L_obj2::is2Lnomix() &&
              Trig2L_obj2::object() == Trig2Lmix::object2() &&
              Trig2Lsym_obj1::is2Lsym() &&
              Trig2Lsym_obj1::object() == Trig2Lmix::object1() &&
              Trig2Lsym_obj2::is2Lsym() &&
              Trig2Lsym_obj2::object() == Trig2Lmix::object2() &&
              Trig1L_obj1::is1L() &&
              Trig1L_obj1::object() == Trig2Lmix::object1() &&
              Trig1L_obj2::is1L() &&
              Trig1L_obj2::object() == Trig2Lmix::object2(),
          bool>;
  template <typename Trig3Lmix>
  auto globalEfficiency(const LeptonList&, unsigned, const Trig3Lmix,
                        Efficiencies&)
      -> std::enable_if_t<Trig3Lmix::is3Lmix(), bool>;
  template <typename Trig3Lmix1, typename Trig3Lmix2>
  auto globalEfficiency(const LeptonList&, unsigned, const Trig3Lmix1,
                        const Trig3Lmix2, Efficiencies&)
      -> std::enable_if_t<Trig3Lmix1::is3Lmix() && Trig3Lmix2::is3Lmix() &&
                              Trig3Lmix1::object1() == Trig3Lmix2::object2() &&
                              Trig3Lmix1::object2() == Trig3Lmix2::object1(),
                          bool>;
  template <typename Trig4Lsym>
  auto globalEfficiency(const LeptonList&, unsigned, const Trig4Lsym,
                        Efficiencies&)
      -> std::enable_if_t<Trig4Lsym::is4Lsym(), bool>;
 
  bool globalEfficiency_Factorized2(const LeptonList& leptons,
                                    unsigned runNumber, GlobEffFunc func1,
                                    GlobEffFunc func2,
                                    Efficiencies& globalEfficiencies);
  bool globalEfficiency_Factorized3(const LeptonList& leptons,
                                    unsigned runNumber, GlobEffFunc func1,
                                    GlobEffFunc func2, GlobEffFunc func3,
                                    Efficiencies& globalEfficiencies);
 
  bool globalEfficiency_Toys(const LeptonList&, unsigned,
                             const std::vector<TrigDef>& triggers,
                             Efficiencies&);
 
 private:
  class Helper {
   public:
    Helper(const std::vector<TrigDef>& defs);
    Helper(Helper&&) = default;
 
    bool duplicates() const;
    std::function<bool(Calculator*, const LeptonList&, unsigned, Efficiencies&)>
        m_formula;
 
    bool findAndBindFunction();
 
   protected:
    std::vector<TrigDef> m_defs;
    unsigned m_n1L = 0, m_n2L = 0, m_n3L = 0, m_n4L = 0;
 
    template <TriggerType object_flag>
    bool findAndBindFunction();
    template <TriggerType object1_flag, TriggerType object2_flag>
    bool findAndBindFunction();
    template <typename... Trigs>
    bool bindFunction();
 
    template <typename Param>
    auto extract();
    struct NoSuchTrigger {};
    template <typename T>
    struct Optional {
    };  
    template <typename T>
    struct BindPackedParam;
  };
 
  friend class CheckConfig;
};
 
}  // namespace TrigGlobEffCorr
#endif