draconisplusplus/include/rfl/flexbuf/read.hpp

#ifndef FLEXBUF_READ_HPP_
#define FLEXBUF_READ_HPP_

#include <flatbuffers/flexbuffers.h>
#include <istream>
#include <vector>

#include "../Processors.hpp"
#include "../Result.hpp"
#include "Parser.hpp"

namespace rfl {
  namespace flexbuf {

    using InputVarType = typename Reader::InputVarType;

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

    /// Parses an object from flexbuf using reflection.
    template <class T, class... Ps>
    auto read(const char* _bytes, const size_t _size) {
      const InputVarType root =
          flexbuffers::GetRoot(reinterpret_cast<const uint8_t*>(_bytes), _size);
      return read<T, Ps...>(root);
    }

    /// Parses an object from flexbuf using reflection.
    template <class T, class... Ps>
    auto read(const std::vector<char>& _bytes) {
      return read<T, Ps...>(_bytes.data(), _bytes.size());
    }

    /// Parses an object directly from a stream.
    template <class T, class... Ps>
    auto read(std::istream& _stream) {
      std::istreambuf_iterator<char> begin(_stream), end;
      const auto                     bytes = std::vector<char>(begin, end);
      return read<T, Ps...>(bytes.data(), bytes.size());
    }

  } // namespace flexbuf
} // namespace rfl

#endif