File: path.cpp

package info (click to toggle)
boost1.88 1.88.0-1
  • links: PTS, VCS
  • area: main
  • in suites: sid, trixie
  • size: 576,932 kB
  • sloc: cpp: 4,149,234; xml: 136,789; ansic: 35,092; python: 33,910; asm: 5,698; sh: 4,604; ada: 1,681; makefile: 1,633; pascal: 1,139; perl: 1,124; sql: 640; yacc: 478; ruby: 271; java: 77; lisp: 24; csh: 6
file content (51 lines) | stat: -rw-r--r-- 1,094 bytes parent folder | download | duplicates (5)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
//
// 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;
}