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1 | // Copyright Louis Dionne 2013-2016 |
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/assert.hpp> | |
6 | #include <boost/hana/for_each.hpp> | |
7 | #include <boost/hana/fuse.hpp> | |
8 | #include <boost/hana/fwd/accessors.hpp> | |
9 | #include <boost/hana/pair.hpp> | |
10 | #include <boost/hana/string.hpp> | |
11 | #include <boost/hana/tuple.hpp> | |
12 | ||
13 | #include <string> | |
14 | namespace hana = boost::hana; | |
15 | ||
16 | ||
17 | // | |
18 | // Unit test inspired by http://stackoverflow.com/q/32678647/627587 | |
19 | // | |
20 | ||
21 | struct Foo { | |
22 | std::string get_name() const { return "louis"; } | |
23 | }; | |
24 | ||
25 | namespace boost { namespace hana { | |
26 | template <> | |
27 | struct accessors_impl<Foo> { | |
28 | static auto apply() { | |
29 | return hana::make_tuple( | |
30 | hana::make_pair(BOOST_HANA_STRING("get_name"), [](auto const& foo) { | |
31 | return foo.get_name(); | |
32 | }) | |
33 | ); | |
34 | } | |
35 | }; | |
36 | }} | |
37 | ||
38 | int main() { | |
39 | Foo foo; | |
40 | hana::for_each(foo, hana::fuse([](auto /*key*/, std::string const& name) { | |
41 | BOOST_HANA_RUNTIME_CHECK(name == "louis"); | |
42 | })); | |
43 | } |