PropertyTreeHelpers.h

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// Copyright 2019-2020 CERN and copyright holders of ALICE O2.
// See https://alice-o2.web.cern.ch/copyright for details of the copyright holders.
// All rights not expressly granted are reserved.
//
// This software is distributed under the terms of the GNU General Public
// License v3 (GPL Version 3), copied verbatim in the file "COPYING".
//
// In applying this license CERN does not waive the privileges and immunities
// granted to it by virtue of its status as an Intergovernmental Organization
// or submit itself to any jurisdiction.
#ifndef O2_FRAMEWORK_PROPERTYTREEHELPERS_H_
#define O2_FRAMEWORK_PROPERTYTREEHELPERS_H_
 
#include "Framework/ConfigParamSpec.h"
 
#define BOOST_BIND_GLOBAL_PLACEHOLDERS
#include <boost/property_tree/ptree_fwd.hpp>
#include <boost/program_options/variables_map.hpp>
#include <functional>
 
namespace o2::framework
{
 
struct PropertyTreeHelpers {
  static void populateDefaults(std::vector<ConfigParamSpec> const& schema,
                               boost::property_tree::ptree& tree,
                               boost::property_tree::ptree& provenance);
 
  static void populate(std::vector<ConfigParamSpec> const& schema,
                       boost::property_tree::ptree& tree,
                       boost::program_options::variables_map const& vmap,
                       boost::property_tree::ptree& provenance);
 
  static void populate(std::vector<ConfigParamSpec> const& schema,
                       boost::property_tree::ptree& tree,
                       boost::property_tree::ptree const& in,
                       boost::property_tree::ptree& provenance,
                       std::string const& propertyLabel);
 
  //using WalkerFunction = std::function<void(boost::property_tree::ptree const&, boost::property_tree::ptree::path_type, boost::property_tree::ptree const&)>;
  template <typename T> using WalkerFunction = std::function<void(boost::property_tree::ptree const&, typename T::path_type, boost::property_tree::ptree const&)>;
  template <typename T>
  static void traverse(boost::property_tree::ptree const& parent, WalkerFunction<T>& method);
 
  template <typename T>
  static void merge(boost::property_tree::ptree& dest,
                    boost::property_tree::ptree const& source,
                    typename T::path_type const& mergePoint);
};
 
} // namespace o2::framework
 
#endif // O2_FRAMEWORK_PROPERTYTREEHELPERS_H_