path.cpp
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//
// Copyright (c) 2019 Vinnie Falco (vinnie.falco@gmail.com)
//
// 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;
value&
path( value& jv, 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 (*arr)[index];
}
value&
path( value& jv, string_view key )
{
object* obj;
if(jv.is_null())
obj = &jv.emplace_object();
else
obj = &jv.as_object();
return (*obj)[key];
}
template<class Arg0, class Arg1, class... Args>
value&
path( value& jv, Arg0 const& arg0, Arg1 const& arg1, Args const&... args )
{
return path( path( jv, arg0 ), arg1, args... );
}
int
main(int, char**)
{
value jv;
path( jv, "user:config", "authority", "router", 0, "users" ) = 42;
return EXIT_SUCCESS;
}