is_loading.hpp

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#ifndef MLPACK_CORE_CEREAL_IS_LOADING_HPP
#define MLPACK_CORE_CEREAL_IS_LOADING_HPP

#include <cereal/archives/binary.hpp>
#include <cereal/archives/portable_binary.hpp>
#include <cereal/archives/xml.hpp>
#include <cereal/archives/json.hpp>

namespace cereal {

template<typename Archive>
struct is_cereal_archive
{
  // Archive::is_loading is not implemented yet, so we can use std::is_same<>
  // to check if it is a loading archive.
  constexpr static bool value = std::is_same<Archive,
      cereal::BinaryInputArchive>::value ||
// #if (BINDING_TYPE != BINDING_TYPE_R)
      std::is_same<Archive, cereal::JSONInputArchive>::value ||
// #endif
      std::is_same<Archive, cereal::XMLInputArchive>::value;
};

template<typename Archive>
bool is_loading(
    const typename std::enable_if<
        is_cereal_archive<Archive>::value, Archive>::type* = 0)
{
  return true;
}

template<typename Archive>
bool is_loading(
    const typename std::enable_if<
      !is_cereal_archive<Archive>::value, Archive>::type* = 0)
{
  return false;
}

} // namespace cereal

#endif // CEREAL_IS_LOADING_HPP