get_raw_param.hpp

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#ifndef MLPACK_BINDINGS_CLI_GET_RAW_PARAM_HPP
#define MLPACK_BINDINGS_CLI_GET_RAW_PARAM_HPP

#include <mlpack/prereqs.hpp>
#include "parameter_type.hpp"

namespace mlpack {
namespace bindings {
namespace cli {

template<typename T>
T& GetRawParam(
    util::ParamData& d,
    const typename std::enable_if<!arma::is_arma_type<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<mlpack::data::DatasetInfo, arma::mat>>::value>::type* = 0)
{
  // No mapping is needed, so just cast it directly.
  return *boost::any_cast<T>(&d.value);
}

template<typename T>
T& GetRawParam(
    util::ParamData& d,
    const typename std::enable_if<
        arma::is_arma_type<T>::value ||
        std::is_same<T, std::tuple<mlpack::data::DatasetInfo,
                                   arma::mat>>::value>::type* = 0)
{
  // Don't load the matrix.
  typedef std::tuple<T, std::tuple<std::string, size_t, size_t>> TupleType;
  T& value = std::get<0>(*boost::any_cast<TupleType>(&d.value));
  return value;
}

template<typename T>
T*& GetRawParam(
    util::ParamData& d,
    const typename std::enable_if<!arma::is_arma_type<T>::value>::type* = 0,
    const typename std::enable_if<data::HasSerialize<T>::value>::type* = 0)
{
  // Don't load the model.
  typedef std::tuple<T*, std::string> TupleType;
  T*& value = std::get<0>(*boost::any_cast<TupleType>(&d.value));
  return value;
}

template<typename T>
void GetRawParam(util::ParamData& d,
                 const void* /* input */,
                 void* output)
{
  // Cast to the correct type.
  *((T**) output) = &GetRawParam<typename std::remove_pointer<T>::type>(
      const_cast<util::ParamData&>(d));
}

} // namespace cli
} // namespace bindings
} // namespace mlpack

#endif