draconisplusplus/include/rfl/cbor/read.hpp

#ifndef RFL_CBOR_READ_HPP_
#define RFL_CBOR_READ_HPP_

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

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

namespace rfl {
  namespace cbor {

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

    /// Parses an object from a CBOR 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 CBOR using reflection.
    template <class T, class... Ps>
    Result<internal::wrap_in_rfl_array_t<T>> read(const char* _bytes,
                                                  const size_t _size) {
      CborParser parser;
      CborValue value;
      cbor_parser_init(reinterpret_cast<const uint8_t*>(_bytes), _size, 0,
                       &parser, &value);
      auto doc    = InputVarType {&value};
      auto result = read<T, Ps...>(doc);
      return result;
    }

    /// Parses an object from CBOR 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 cbor
} // namespace rfl

#endif