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b32b8144 | 1 | // Copyright Louis Dionne 2013-2017 |
7c673cae FG |
2 | // Distributed under the Boost Software License, Version 1.0. |
3 | // (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt) | |
4 | ||
5 | #include <boost/hana/accessors.hpp> | |
6 | #include <boost/hana/adapt_adt.hpp> | |
7 | #include <boost/hana/assert.hpp> | |
8 | #include <boost/hana/core/to.hpp> | |
9 | #include <boost/hana/equal.hpp> | |
10 | #include <boost/hana/find.hpp> | |
11 | #include <boost/hana/first.hpp> | |
12 | #include <boost/hana/map.hpp> | |
13 | #include <boost/hana/not_equal.hpp> | |
14 | #include <boost/hana/optional.hpp> | |
15 | #include <boost/hana/pair.hpp> | |
16 | #include <boost/hana/string.hpp> | |
17 | #include <boost/hana/transform.hpp> | |
18 | #include <boost/hana/tuple.hpp> | |
19 | ||
20 | #include <string> | |
21 | namespace hana = boost::hana; | |
22 | ||
23 | ||
24 | namespace ns { | |
25 | struct Person { | |
26 | explicit Person(std::string const& name, int age) | |
27 | : name_(name), age_(age) | |
28 | { } | |
29 | std::string const& get_name() const { return name_; } | |
30 | int get_age() const { return age_; } | |
31 | ||
32 | private: | |
33 | std::string name_; | |
34 | int age_; | |
35 | }; | |
36 | } | |
37 | ||
38 | BOOST_HANA_ADAPT_ADT(ns::Person, | |
39 | (name, [](ns::Person const& p) { return p.get_name(); }), | |
40 | (age, [](ns::Person const& p) { return p.get_age(); }) | |
41 | ); | |
42 | ||
43 | // The member names are hana::strings: | |
44 | auto names = hana::transform(hana::accessors<ns::Person>(), hana::first); | |
45 | BOOST_HANA_CONSTANT_CHECK( | |
46 | names == hana::make_tuple(BOOST_HANA_STRING("name"), BOOST_HANA_STRING("age")) | |
47 | ); | |
48 | ||
49 | int main() { | |
50 | ns::Person john{"John", 30}, bob{"Bob", 40}; | |
51 | BOOST_HANA_RUNTIME_CHECK(hana::equal(john, john)); | |
52 | BOOST_HANA_RUNTIME_CHECK(hana::not_equal(john, bob)); | |
53 | ||
54 | BOOST_HANA_RUNTIME_CHECK(hana::find(john, BOOST_HANA_STRING("name")) == hana::just("John")); | |
55 | BOOST_HANA_RUNTIME_CHECK(hana::find(john, BOOST_HANA_STRING("age")) == hana::just(30)); | |
56 | BOOST_HANA_CONSTANT_CHECK(hana::find(john, BOOST_HANA_STRING("foo")) == hana::nothing); | |
57 | ||
58 | BOOST_HANA_RUNTIME_CHECK(hana::to_tuple(john) == hana::make_tuple( | |
59 | hana::make_pair(BOOST_HANA_STRING("name"), "John"), | |
60 | hana::make_pair(BOOST_HANA_STRING("age"), 30) | |
61 | )); | |
62 | ||
63 | BOOST_HANA_RUNTIME_CHECK(hana::to_map(john) == hana::make_map( | |
64 | hana::make_pair(BOOST_HANA_STRING("name"), "John"), | |
65 | hana::make_pair(BOOST_HANA_STRING("age"), 30) | |
66 | )); | |
67 | } |