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20effc67 TL |
1 | // |
2 | // cpp14/query_static.cpp | |
3 | // ~~~~~~~~~~~~~~~~~~~~~~ | |
4 | // | |
1e59de90 | 5 | // Copyright (c) 2003-2022 Christopher M. Kohlhoff (chris at kohlhoff dot com) |
20effc67 TL |
6 | // |
7 | // Distributed under the Boost Software License, Version 1.0. (See accompanying | |
8 | // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) | |
9 | // | |
10 | ||
11 | #include <boost/asio/query.hpp> | |
12 | #include <cassert> | |
13 | ||
14 | struct prop | |
15 | { | |
16 | template <typename> static constexpr bool is_applicable_property_v = true; | |
17 | template <typename> static constexpr int static_query_v = 123; | |
18 | }; | |
19 | ||
20 | struct object | |
21 | { | |
22 | }; | |
23 | ||
24 | int main() | |
25 | { | |
26 | object o1 = {}; | |
27 | int result1 = boost::asio::query(o1, prop()); | |
28 | assert(result1 == 123); | |
29 | (void)result1; | |
30 | ||
31 | const object o2 = {}; | |
32 | int result2 = boost::asio::query(o2, prop()); | |
33 | assert(result2 == 123); | |
34 | (void)result2; | |
35 | ||
36 | constexpr object o3 = {}; | |
37 | constexpr int result3 = boost::asio::query(o3, prop()); | |
38 | assert(result3 == 123); | |
39 | (void)result3; | |
40 | } |