draconisplusplus/include/rfl/msgpack/read.hpp

#ifndef RFL_MSGPACK_READ_HPP_
#define RFL_MSGPACK_READ_HPP_

#include <istream>
#include <msgpack.h>
#include <string>

#include "../Processors.hpp"
#include "../internal/wrap_in_rfl_array_t.hpp"
#include "Parser.hpp"
#include "Reader.hpp"

namespace rfl {
  namespace msgpack {

    using InputObjectType = typename Reader::InputObjectType;
    using InputVarType    = typename Reader::InputVarType;

    /// Parses an object from a MSGPACK 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 MSGPACK using reflection.
    template <class T, class... Ps>
    Result<internal::wrap_in_rfl_array_t<T>> read(const char* _bytes, const size_t _size) {
      msgpack_zone mempool;
      msgpack_zone_init(&mempool, 2048);
      msgpack_object deserialized;
      msgpack_unpack(_bytes, _size, NULL, &mempool, &deserialized);
      auto r = read<T, Ps...>(deserialized);
      msgpack_zone_destroy(&mempool);
      return r;
    }

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

  } // namespace msgpack
} // namespace rfl

#endif