draconisplusplus/include/rfl/flexbuf/write.hpp
2024-06-05 19:04:53 -04:00

51 lines
1.3 KiB
C++

#ifndef FLEXBUF_WRITE_HPP_
#define FLEXBUF_WRITE_HPP_
#include <flatbuffers/flexbuffers.h>
#include <cstddef>
#include <ostream>
#include <sstream>
#include <vector>
#include "../Processors.hpp"
#include "../Ref.hpp"
#include "../parsing/Parent.hpp"
#include "Parser.hpp"
namespace rfl {
namespace flexbuf {
template <class... Ps>
std::vector<uint8_t> to_buffer(const auto& _obj) {
using T = std::remove_cvref_t<decltype(_obj)>;
using ParentType = parsing::Parent<Writer>;
const auto fbb = Ref<flexbuffers::Builder>::make();
auto w = Writer(fbb);
Parser<T, Processors<Ps...>>::write(w, _obj, typename ParentType::Root{});
fbb->Finish();
return fbb->GetBuffer();
}
/// Writes an object to flexbuf.
template <class... Ps>
std::vector<char> write(const auto& _obj) {
const auto buffer = to_buffer<Ps...>(_obj);
const auto data = reinterpret_cast<const char*>(buffer.data());
return std::vector<char>(data, data + buffer.size());
}
/// Writes an object to an ostream.
template <class... Ps>
std::ostream& write(const auto& _obj, std::ostream& _stream) {
const auto buffer = to_buffer<Ps...>(_obj);
const auto data = reinterpret_cast<const char*>(buffer.data());
_stream.write(data, buffer.size());
return _stream;
}
} // namespace flexbuf
} // namespace rfl
#endif