1
2 // Copyright 2015, 2017, 2019 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_identity;
18 using boost::mp11::mp_eval_if_not;
19 using boost::mp11::mp_eval_if_not_q;
20 using boost::mp11::mp_quote;
21
22 using qt_identity = mp_quote<mp_identity>;
23
24 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_eval_if_not<std::false_type, char[], mp_identity, void, void, void>, char[]>));
25 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_eval_if_not<std::true_type, char[], mp_identity, void()>, mp_identity<void()>>));
26
27 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_eval_if_not_q<std::false_type, char[], qt_identity, void, void, void>, char[]>));
28 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_eval_if_not_q<std::true_type, char[], qt_identity, void()>, mp_identity<void()>>));
29
30 using boost::mp11::mp_int;
31
32 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_eval_if_not<mp_int<0>, char[], mp_identity, void, void, void>, char[]>));
33 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_eval_if_not<mp_int<-7>, char[], mp_identity, void()>, mp_identity<void()>>));
34
35 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_eval_if_not_q<mp_int<0>, char[], qt_identity, void, void, void>, char[]>));
36 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_eval_if_not_q<mp_int<-7>, char[], qt_identity, void()>, mp_identity<void()>>));
37
38 using boost::mp11::mp_size_t;
39
40 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_eval_if_not<mp_size_t<0>, char[], mp_identity, void, void, void>, char[]>));
41 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_eval_if_not<mp_size_t<14>, char[], mp_identity, void()>, mp_identity<void()>>));
42
43 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_eval_if_not_q<mp_size_t<0>, char[], qt_identity, void, void, void>, char[]>));
44 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_eval_if_not_q<mp_size_t<14>, char[], qt_identity, void()>, mp_identity<void()>>));
45
46 return boost::report_errors();
47 }
48