JsonGeometryList.cpp

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// This file is part of the Acts project.
//
// Copyright (C) 2021 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/.

#include "ActsExamples/Io/Json/JsonGeometryList.hpp"

#include <fstream>
#include <initializer_list>

void ActsExamples::from_json(const nlohmann::json& data,
                             Acts::GeometryIdentifier& geoId) {
  Acts::GeometryIdentifier::Value null(0u);
  geoId.setVolume(data.value("volume", null));
  geoId.setBoundary(data.value("boundary", null));
  geoId.setLayer(data.value("layer", null));
  geoId.setApproach(data.value("approach", null));
  geoId.setSensitive(data.value("sensitive", null));
}

void ActsExamples::to_json(nlohmann::json& data,
                           const Acts::GeometryIdentifier& geoId) {
  if (geoId.volume() != 0u) {
    data["volume"] = geoId.volume();
  }
  if (geoId.boundary() != 0u) {
    data["boundary"] = geoId.boundary();
  }
  if (geoId.layer() != 0u) {
    data["layer"] = geoId.layer();
  }
  if (geoId.approach() != 0u) {
    data["approach"] = geoId.approach();
  }
  if (geoId.sensitive() != 0u) {
    data["sensitive"] = geoId.sensitive();
  }
}

void ActsExamples::from_json(const nlohmann::json& data,
                             std::vector<Acts::GeometryIdentifier>& geoIdList) {
  for (auto& entry : data) {
    Acts::GeometryIdentifier geoId;
    from_json(entry, geoId);
    geoIdList.push_back(geoId);
  }
}

void ActsExamples::to_json(
    nlohmann::json& data,
    const std::vector<Acts::GeometryIdentifier>& geoIdList) {
  for (auto& geoId : geoIdList) {
    nlohmann::json entry;
    to_json(entry, geoId);
    data.push_back(entry);
  }
}

std::vector<Acts::GeometryIdentifier> ActsExamples::readJsonGeometryList(
    const std::string& path) {
  nlohmann::json data;
  std::vector<Acts::GeometryIdentifier> geoIdList;
  std::ifstream infile(path, std::ifstream::in | std::ifstream::binary);
  infile.exceptions(std::ofstream::failbit | std::ofstream::badbit);
  infile >> data;
  from_json(data, geoIdList);
  return geoIdList;
}

void ActsExamples::writeJsonGeometryList(
    const std::vector<Acts::GeometryIdentifier>& geoIdList,
    const std::string& path) {
  nlohmann::json data;
  to_json(data, geoIdList);
  std::ofstream outfile(path, std::ofstream::out | std::ofstream::binary);
  outfile.exceptions(std::ofstream::failbit | std::ofstream::badbit);
  outfile << data;
}