draconisplusplus/include/rfl/yaml/read.hpp

#ifndef RFL_YAML_READ_HPP_
#define RFL_YAML_READ_HPP_

#include <istream>
#include <string>
#include <yaml-cpp/yaml.h>

#include "../Processors.hpp"
#include "../internal/wrap_in_rfl_array_t.hpp"
#include "Parser.hpp"
#include "Reader.hpp"
namespace rfl {
  namespace yaml {

    using InputVarType = typename Reader::InputVarType;

    /// Parses an object from a YAML var.
    template <class T, class... Ps>
    auto read(const InputVarType& _var) {
      const auto r = Reader();
      return Parser<T, Processors<Ps...>>::read(r, _var);
    }

    /// Parses an object from YAML using reflection.
    template <class T, class... Ps>
    Result<internal::wrap_in_rfl_array_t<T>> read(const std::string& _yaml_str) {
      try {
        const auto var = InputVarType(YAML::Load(_yaml_str));
        return read<T, Ps...>(var);
      } catch (std::exception& e) { return Error(e.what()); }
    }

    /// Parses an object from a stringstream.
    template <class T, class... Ps>
    auto read(std::istream& _stream) {
      const auto yaml_str =
        std::string(std::istreambuf_iterator<char>(_stream), std::istreambuf_iterator<char>());
      return read<T, Ps...>(yaml_str);
    }

  } // namespace yaml
} // namespace rfl

#endif