json/example/proxy.cpp at develop · boostorg/json · GitHub

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// Distributed under the Boost Software License, Version 1.0. (See accompanying

// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)

// Official repository: https://github.com/boostorg/json

#include <boost/json.hpp>

using namespace boost::json;

class proxy

{

value& jv_;

public:

explicit

proxy(value& jv) noexcept

: jv_(jv)

{

}

proxy

operator[](string_view key)

{

object* obj;

if(jv_.is_null())

obj = &jv_.emplace_object();

else

obj = &jv_.as_object();

return proxy((*obj)[key]);

}

proxy

operator[](std::size_t index)

{

array *arr;

if(jv_.is_null())

arr = &jv_.emplace_array();

else

arr = &jv_.as_array();

if(arr->size() <= index)

arr->resize(index + 1);

return proxy((*arr)[index]);

}

value&

operator*() noexcept

{

return jv_;

}

};

int

main(int, char**)

{

value jv;

*proxy(jv)["user:config"]["authority"]["router"][0]["users"] = 42;

return EXIT_SUCCESS;

}

json/example/proxy.cpp at develop · boostorg/json · GitHub

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