JSONReaders Namespace Reference

collection of helper methods to load in pairs, triplets or vectors of doubles from JSON files More...

Functions
std::pair< double, double >	readPair (pt::ptree &tree)
std::pair< std::string, std::string >	readStringPair (pt::ptree &tree)
std::array< double, 3 >	readTriplet (pt::ptree &tree)
std::vector< double >	readVector (pt::ptree &tree)

Detailed Description

collection of helper methods to load in pairs, triplets or vectors of doubles from JSON files

JSONReadersHelper.h

Date

21.09.2022

Author

Tobias Stockmanns t.sto.nosp@m.ckma.nosp@m.nns@f.nosp@m.z-ju.nosp@m.elich.nosp@m..de

Function Documentation

readPair()

std::pair<double, double> JSONReaders::readPair ( pt::ptree &  tree )

inline

Definition at line 29 of file JSONReadersHelper.h.

References max(), and min().

{
  if (tree.size() != 2) {
    throw std::range_error("Expected two values e.g min/max not " + std::to_string(tree.size()));
    //    LOG(error) << "Expected two values eg. min/max not " << tree.size();
  }
  auto it = tree.begin();
  double min = it->second.get_value<double>();
  it++;
  double max = it->second.get_value<double>();
  return std::make_pair(min, max);
}

readStringPair()

std::pair<std::string, std::string> JSONReaders::readStringPair ( pt::ptree &  tree )

inline

Definition at line 42 of file JSONReadersHelper.h.

{
  if (tree.size() != 2) {
    throw std::range_error("Expected two values e.g min/max not " + std::to_string(tree.size()));
    //    LOG(error) << "Expected two values eg. min/max not " << tree.size();
  }
  auto it = tree.begin();
  std::string first = it->second.data();
  it++;
  std::string second = it->second.data();
  return std::make_pair(first, second);
}

readTriplet()

std::array<double, 3> JSONReaders::readTriplet ( pt::ptree &  tree )

inline

Definition at line 55 of file JSONReadersHelper.h.

{
  if (tree.size() != 3) {
    throw std::range_error("Expected three values e.g x/y/z not " + std::to_string(tree.size()));
    //    LOG(error) <<  << tree.size();
  }
  std::array<double, 3> xyz;
  int index = 0;
  for (auto val : tree) {
    xyz[index++] = val.second.get_value<double>();
  }
  return xyz;
}

readVector()

std::vector<double> JSONReaders::readVector ( pt::ptree &  tree )

inline

Definition at line 69 of file JSONReadersHelper.h.

{
  std::vector<double> result;
  for (auto val : tree) {
    result.push_back(val.second.get_value<double>());
  }
  return result;
}