1 //
2 // Copyright (c) 2019 Vinnie Falco (vinnie.falco@gmail.com)
3 //
4 // Distributed under the Boost Software License, Version 1.0. (See accompanying
5 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
6 //
7 // Official repository: https://github.com/boostorg/json
8 //
9
10 #include <boost/json.hpp>
11
12 using namespace boost::json;
13
14 value&
path(value & jv,std::size_t index)15 path( value& jv, std::size_t index)
16 {
17 array *arr;
18 if(jv.is_null())
19 arr = &jv.emplace_array();
20 else
21 arr = &jv.as_array();
22 if(arr->size() <= index)
23 arr->resize(index + 1);
24 return (*arr)[index];
25 }
26
27 value&
path(value & jv,string_view key)28 path( value& jv, string_view key )
29 {
30 object* obj;
31 if(jv.is_null())
32 obj = &jv.emplace_object();
33 else
34 obj = &jv.as_object();
35 return (*obj)[key];
36 }
37
38 template<class Arg0, class Arg1, class... Args>
39 value&
path(value & jv,Arg0 const & arg0,Arg1 const & arg1,Args const &...args)40 path( value& jv, Arg0 const& arg0, Arg1 const& arg1, Args const&... args )
41 {
42 return path( path( jv, arg0 ), arg1, args... );
43 }
44
45 int
main(int,char **)46 main(int, char**)
47 {
48 value jv;
49 path( jv, "user:config", "authority", "router", 0, "users" ) = 42;
50 return EXIT_SUCCESS;
51 }
52