HepMC3Reader.hpp

Go to the documentation of this file. Or view the newest version in sPHENIX GitHub for file HepMC3Reader.hpp

// This file is part of the Acts project.
//
// Copyright (C) 2018-2020 CERN for the benefit of the Acts project
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.

#pragma once

#include "Acts/Utilities/Logger.hpp"
#include "ActsExamples/Framework/DataHandle.hpp"
#include "ActsExamples/Framework/IReader.hpp"

#include <HepMC3/GenEvent.h>
#include <HepMC3/ReaderAscii.h>

namespace ActsExamples {

class HepMC3AsciiReader final : public IReader {
 public:
  struct Config {
    // The input directory
    std::string inputDir;
    // The stem of input file names
    std::string inputStem;
    // The output collection
    std::string outputEvents;
  };

  bool readEvent(HepMC3::ReaderAscii& reader, HepMC3::GenEvent& event);

  bool status(HepMC3::ReaderAscii& reader);

  HepMC3AsciiReader(const Config& cfg, Acts::Logging::Level lvl);

  std::string name() const override;

  std::pair<size_t, size_t> availableEvents() const override;

  ProcessCode read(const ActsExamples::AlgorithmContext& ctx) override;

  const Config& config() const { return m_cfg; }

 private:
  Config m_cfg;
  std::pair<size_t, size_t> m_eventsRange;
  std::unique_ptr<const Acts::Logger> m_logger;

  const Acts::Logger& logger() const { return *m_logger; }

  WriteDataHandle<std::vector<HepMC3::GenEvent>> m_outputEvents{this,
                                                                "OutputEvents"};
};

}  // namespace ActsExamples