get_printable_param.hpp

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#ifndef MLPACK_BINDINGS_JULIA_GET_PRINTABLE_PARAM_HPP
#define MLPACK_BINDINGS_JULIA_GET_PRINTABLE_PARAM_HPP

#include <mlpack/prereqs.hpp>
#include <mlpack/core/util/is_std_vector.hpp>

namespace mlpack {
namespace bindings {
namespace julia {

template<typename T>
std::string GetPrintableParam(
    util::ParamData& data,
    const typename std::enable_if<!arma::is_arma_type<T>::value>::type* = 0,
    const typename std::enable_if<!util::IsStdVector<T>::value>::type* = 0,
    const typename std::enable_if<!data::HasSerialize<T>::value>::type* = 0,
    const typename std::enable_if<!std::is_same<T,
        std::tuple<data::DatasetInfo, arma::mat>>::value>::type* = 0)
{
  std::ostringstream oss;
  oss << boost::any_cast<T>(data.value);
  return oss.str();
}

template<typename T>
std::string GetPrintableParam(
    util::ParamData& data,
    const typename std::enable_if<util::IsStdVector<T>::value>::type* = 0)
{
  const T& t = boost::any_cast<T>(data.value);

  std::ostringstream oss;
  for (size_t i = 0; i < t.size(); ++i)
    oss << t[i] << " ";
  return oss.str();
}

template<typename T>
std::string GetPrintableParam(
    util::ParamData& data,
    const typename std::enable_if<arma::is_arma_type<T>::value>::type* = 0)
{
  // Get the matrix.
  const T& matrix = boost::any_cast<T>(data.value);

  std::ostringstream oss;
  oss << matrix.n_rows << "x" << matrix.n_cols << " matrix";
  return oss.str();
}

template<typename T>
std::string GetPrintableParam(
    util::ParamData& data,
    const typename std::enable_if<!arma::is_arma_type<T>::value>::type* = 0,
    const typename std::enable_if<data::HasSerialize<T>::value>::type* = 0)
{
  std::ostringstream oss;
  oss << data.cppType << " model at " << boost::any_cast<T*>(data.value);
  return oss.str();
}

template<typename T>
std::string GetPrintableParam(
    util::ParamData& data,
    const typename std::enable_if<std::is_same<T,
        std::tuple<data::DatasetInfo, arma::mat>>::value>::type* = 0)
{
  // Get the matrix.
  const T& tuple = boost::any_cast<T>(data.value);
  const arma::mat& matrix = std::get<1>(tuple);

  std::ostringstream oss;
  oss << matrix.n_rows << "x" << matrix.n_cols << " matrix with dimension type "
      << "information";
  return oss.str();
}

template<typename T>
void GetPrintableParam(util::ParamData& data,
                       const void* /* input */,
                       void* output)
{
  *((std::string*) output) =
      GetPrintableParam<typename std::remove_pointer<T>::type>(data);
}

} // namespace julia
} // namespace bindings
} // namespace mlpack

#endif