reflection with cereal similar to RTTR, Qt Property System or BOOST_HANA_DEFINE_STRUCT

[mdimura]

I'm wondering if it would be possible/useful for cereal to provide something like:

struct MyClass
{
  int n;
  float f;
  template<class Archive>
  void serialize(Archive & archive)
  {
    archive( CEREAL_NVP(n), CEREAL_NVP(f) );
  }
};

int main()
{
  MyClass obj;
  
  //boost::hana
  cereal::for_each(cereal::properties(obj), [&](auto name, auto value) {
    std::cout << name<< '=' << value << "\n";
  });

  //Qt properties
  const int nVal=cereal::propertyCount(obj);
  for(auto i=0; i<nVal; ++i) {
    std::string name = cereal::propertyName(ojb, i);
    auto val = cereal::property(ojb, i); //std::variant<int,float> or std::any ?
    std::cout << name << "=" << some_convert(val) << "\n"; 
  }
  cereal::setProperty(obj, "n", 42);
  cereal::setProperty<1>(obj, 3.14f);
}

Qt Property System boost::hana RTTR

I can imagine doing this in a very ugly and inefficient way through JSON...Archive, but maybe we could have some kind of more efficient PropertyAccessArchive?

[pi1ot]

Sounds like this: https://github.com/USCiLab/cereal/issues/713