1 // Copyright Louis Dionne 2013-2017
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_struct.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 std::string name;
27 int age;
28 };
29 }
30
31 BOOST_HANA_ADAPT_STRUCT(ns::Person,
32 name,
33 age
34 );
35
36 // The member names are hana::strings:
37 auto names = hana::transform(hana::accessors<ns::Person>(), hana::first);
38 BOOST_HANA_CONSTANT_CHECK(
39 names == hana::make_tuple(BOOST_HANA_STRING("name"), BOOST_HANA_STRING("age"))
40 );
41
main()42 int main() {
43 ns::Person john{"John", 30}, bob{"Bob", 40};
44 BOOST_HANA_RUNTIME_CHECK(hana::equal(john, john));
45 BOOST_HANA_RUNTIME_CHECK(hana::not_equal(john, bob));
46
47 BOOST_HANA_RUNTIME_CHECK(hana::find(john, BOOST_HANA_STRING("name")) == hana::just("John"));
48 BOOST_HANA_RUNTIME_CHECK(hana::find(john, BOOST_HANA_STRING("age")) == hana::just(30));
49 BOOST_HANA_CONSTANT_CHECK(hana::find(john, BOOST_HANA_STRING("foo")) == hana::nothing);
50
51 BOOST_HANA_RUNTIME_CHECK(hana::to_tuple(john) == hana::make_tuple(
52 hana::make_pair(BOOST_HANA_STRING("name"), "John"),
53 hana::make_pair(BOOST_HANA_STRING("age"), 30)
54 ));
55
56 BOOST_HANA_RUNTIME_CHECK(hana::to_map(john) == hana::make_map(
57 hana::make_pair(BOOST_HANA_STRING("name"), "John"),
58 hana::make_pair(BOOST_HANA_STRING("age"), 30)
59 ));
60 }
61