https://github.com/seaweed-code/AUTOJSON

[seaweed-code]

https://github.com/seaweed-code/AUTOJSON
#include "JsonTransformAuto.h"

struct Person {
std::string name;
int32_t age;
DECLARE__JSON__AUTO__TRANSFORM // inject serialize/deserialize methods
};
IMPLEMENT__JSON__AUTO__TRANSFORM(Person, name, age)

Person p;
p.name = "Bob";
p.age = 25;
std::string json = p.transform_to_json();
// json == {"name":"Bob","age":25}

[seaweed-code]

p.transform_from_json("{"name":"Alice","age":30}");