draconisplusplus/include/rfl/yaml/write.hpp

#ifndef RFL_YAML_WRITE_HPP_
#define RFL_YAML_WRITE_HPP_

#include <ostream>
#include <sstream>
#include <string>
#include <type_traits>
#include <yaml-cpp/yaml.h>

#include "../Processors.hpp"
#include "../parsing/Parent.hpp"
#include "Parser.hpp"

namespace rfl {
  namespace yaml {

    /// Writes a YAML into an ostream.
    template <class... Ps>
    std::ostream& write(const auto& _obj, std::ostream& _stream) {
      using T          = std::remove_cvref_t<decltype(_obj)>;
      using ParentType = parsing::Parent<Writer>;
      const auto out   = Ref<YAML::Emitter>::make();
      auto       w     = Writer(out);
      Parser<T, Processors<Ps...>>::write(
          w, _obj, typename ParentType::Root {}
      );
      _stream << out->c_str();
      return _stream;
    }

    /// Returns a YAML string.
    template <class... Ps>
    std::string write(const auto& _obj) {
      using T          = std::remove_cvref_t<decltype(_obj)>;
      using ParentType = parsing::Parent<Writer>;
      const auto out   = Ref<YAML::Emitter>::make();
      auto       w     = Writer(out);
      Parser<T, Processors<Ps...>>::write(
          w, _obj, typename ParentType::Root {}
      );
      return out->c_str();
    }

  } // namespace yaml
} // namespace rfl

#endif