#include "DataFormats/Candidate/interface/CompositeRefCandidate.h"
#include "FWCore/Utilities/interface/Exception.h"

using namespace reco;

CompositeRefCandidate::~CompositeRefCandidate() {}

CompositeRefCandidate* CompositeRefCandidate::clone() const { return new CompositeRefCandidate(*this); }

const Candidate* CompositeRefCandidate::daughter(size_type i) const {
  return (i < numberOfDaughters()) ? &*dau[i] : nullptr;  // i >= 0, since i is unsigned
}

const Candidate* CompositeRefCandidate::mother(size_type i) const {
  return (i < numberOfMothers()) ? &*mom[i] : nullptr;  // i >= 0, since i is unsigned
}

Candidate* CompositeRefCandidate::daughter(size_type i) { return nullptr; }

size_t CompositeRefCandidate::numberOfDaughters() const { return dau.size(); }

size_t CompositeRefCandidate::numberOfMothers() const { return mom.size(); }

bool CompositeRefCandidate::overlap(const Candidate& c2) const {
  throw cms::Exception("Error") << "can't check overlap internally for CompositeRefCanddate";
}