Converting C++ class to JSON

Question

I\'d like to create a JSON string containing the instance variables of my class.

For example,

class Example {  
    std::string string;  
    std::ma         


        

Answer 1

I wrote a library which designed to solve your problem. However, it is a very new project, not stable enough. Feel free to take a look, the homepage is here::

https://github.com/Mizuchi/acml

In your example, you have to add one line like this:

ACML_REGISTER(Example, ,(string)(map)(vector));

in order to tell the library which member you want to dump. Since C++ have no reflection. And you must give a way to access the member, either use public member level or use friend class.

And later you just need to do sth like this:

string result = acml::json::dumps(any_object);

would become::

{
    "string": "the-string-value",
    "map":
    {
        "key1": "val1",
        "key2": "val2"
    },
    "vector":
    {
        "type": "std::vector",
        "size": "4",
        "0": "1",
        "1": "2",
        "2": "3",
        "3": "4"
    }
}

As you see, JSON array is not implemented yet. And everything becomes string now.