1
2 // Copyright 2015, 2017 Peter Dimov.
3 //
4 // Distributed under the Boost Software License, Version 1.0.
5 //
6 // See accompanying file LICENSE_1_0.txt or copy at
7 // http://www.boost.org/LICENSE_1_0.txt
8
9
10 #include <boost/mp11/utility.hpp>
11 #include <boost/mp11/integral.hpp>
12 #include <boost/core/lightweight_test_trait.hpp>
13 #include <type_traits>
14
main()15 int main()
16 {
17 using boost::mp11::mp_eval_if_c;
18 using boost::mp11::mp_identity;
19
20 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_eval_if_c<true, char[], mp_identity, void, void, void>, char[]>));
21 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_eval_if_c<false, char[], mp_identity, void()>, mp_identity<void()>>));
22
23 using boost::mp11::mp_eval_if;
24 using boost::mp11::mp_eval_if_q;
25 using boost::mp11::mp_quote;
26
27 using qt_identity = mp_quote<mp_identity>;
28
29 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_eval_if<std::true_type, char[], mp_identity, void, void, void>, char[]>));
30 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_eval_if<std::false_type, char[], mp_identity, void()>, mp_identity<void()>>));
31
32 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_eval_if_q<std::true_type, char[], qt_identity, void, void, void>, char[]>));
33 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_eval_if_q<std::false_type, char[], qt_identity, void()>, mp_identity<void()>>));
34
35 using boost::mp11::mp_int;
36
37 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_eval_if<mp_int<-7>, char[], mp_identity, void, void, void>, char[]>));
38 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_eval_if<mp_int<0>, char[], mp_identity, void()>, mp_identity<void()>>));
39
40 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_eval_if_q<mp_int<-7>, char[], qt_identity, void, void, void>, char[]>));
41 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_eval_if_q<mp_int<0>, char[], qt_identity, void()>, mp_identity<void()>>));
42
43 using boost::mp11::mp_size_t;
44
45 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_eval_if<mp_size_t<14>, char[], mp_identity, void, void, void>, char[]>));
46 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_eval_if<mp_size_t<0>, char[], mp_identity, void()>, mp_identity<void()>>));
47
48 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_eval_if_q<mp_size_t<14>, char[], qt_identity, void, void, void>, char[]>));
49 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_eval_if_q<mp_size_t<0>, char[], qt_identity, void()>, mp_identity<void()>>));
50
51 return boost::report_errors();
52 }
53