GenVertex.h

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/*
  Copyright (C) 2002-2025 CERN for the benefit of the ATLAS collaboration
*/
/* Author: Andrii Verbytskyi andrii.verbytskyi@mpp.mpg.de */
 
#ifndef ATLASHEPMC_GENVERTEX_H
#define ATLASHEPMC_GENVERTEX_H
#ifdef HEPMC3
#include "HepMC3/GenVertex.h"
#include "HepMC3/PrintStreams.h"
#include "AtlasHepMC/Barcode.h"
namespace HepMC3 {
inline std::vector<HepMC3::ConstGenParticlePtr>::const_iterator  begin(const HepMC3::GenVertex& v) { return v.particles_out().begin(); }
inline std::vector<HepMC3::ConstGenParticlePtr>::const_iterator  end(const HepMC3::GenVertex& v) { return v.particles_out().end(); }
inline std::vector<HepMC3::GenParticlePtr>::const_iterator  begin(HepMC3::GenVertex& v) { return v.particles_out().begin(); }
inline std::vector<HepMC3::GenParticlePtr>::const_iterator  end(HepMC3::GenVertex& v) { return v.particles_out().end(); }

inline std::ostream& operator<<(std::ostream& os,  GenVertexPtr v) { ConstGenVertexPtr cv = v; Print::line(os,std::move(cv)); return os; }
}
namespace HepMC {
typedef HepMC3::GenVertexPtr GenVertexPtr;
typedef HepMC3::ConstGenVertexPtr ConstGenVertexPtr;
inline GenVertexPtr newGenVertexPtr(const HepMC3::FourVector &pos = HepMC3::FourVector::ZERO_VECTOR(),const int i=0) {
    GenVertexPtr v=std::make_shared<HepMC3::GenVertex>(pos);
    v->set_status(i);
    return v;
}
 
inline int barcode(const GenVertexPtr& p) {
    if (!p) return 0;
    auto e = p->parent_event();
    if (!e) return 0;
    std::shared_ptr<HepMC3::IntAttribute> barcode=e->attribute<HepMC3::IntAttribute>("barcode",p->id());
    return barcode?(barcode->value()):p->id();
}
inline int barcode_or_id(const ConstGenVertexPtr& p) { return p->id();}
inline int barcode(const ConstGenVertexPtr& p) {
    if (!p) return 0;
    auto e = p->parent_event();
    if (!e) return 0;
    std::shared_ptr<HepMC3::IntAttribute> barcode=e->attribute<HepMC3::IntAttribute>("barcode",p->id());
    return barcode?(barcode->value()):p->id();
}
inline int barcode(const HepMC3::GenVertex& p) {
    auto e = p.parent_event();
    if (!e) return 0;
    std::shared_ptr<HepMC3::IntAttribute> barcode=e->attribute<HepMC3::IntAttribute>("barcode",p.id());
    return barcode?(barcode->value()):p.id();
}
 
using HepMC3::GenVertex;
}
#else
#include "HepMC/GenVertex.h"
#include "AtlasHepMC/Barcode.h"
namespace HepMC {
typedef HepMC::GenVertex* GenVertexPtr;
typedef const HepMC::GenVertex* ConstGenVertexPtr;
inline GenVertex::particles_out_const_iterator  begin(const HepMC::GenVertex& v) { return v.particles_out_const_begin(); }
inline GenVertex::particles_out_const_iterator  end(const HepMC::GenVertex& v) { return v.particles_out_const_end(); }
 
inline GenVertexPtr newGenVertexPtr(const HepMC::FourVector &pos = HepMC::FourVector(0.0,0.0,0.0,0.0), const int i=0) {
    return new HepMC::GenVertex(pos,i);
}
namespace Print {
inline void line(std::ostream& os,const GenVertex& v) {v.print(os);}
inline void line(std::ostream& os,const GenVertex* v) {v->print(os);}
}
inline int barcode_or_id(const ConstGenVertexPtr& p) { return p->barcode();}
inline std::ostream& operator<<( std::ostream& os, const GenVertex* v ) { if (v) return os<<(*v); else return os;}
}
#endif
#endif