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/algorithm.hpp>
11 #include <boost/mp11/list.hpp>
12 #include <boost/mp11/integral.hpp>
13 #include <boost/mp11/bind.hpp>
14 #include <boost/core/lightweight_test_trait.hpp>
15 #include <type_traits>
16 #include <tuple>
17
18 struct X1 {};
19 struct X2 {};
20 struct X3 {};
21 struct X4 {};
22
23 template<class T1, class T2> struct F {};
24
main()25 int main()
26 {
27 using boost::mp11::mp_list;
28 using boost::mp11::mp_reverse_fold_q;
29 using boost::mp11::mp_quote;
30
31 using Q = mp_quote<F>;
32
33 {
34 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_reverse_fold_q<mp_list<>, void, Q>, void>));
35 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_reverse_fold_q<mp_list<X1>, void, Q>, F<X1, void>>));
36 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_reverse_fold_q<mp_list<X1, X2>, void, Q>, F<X1, F<X2, void>>>));
37 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_reverse_fold_q<mp_list<X1, X2, X3>, void, Q>, F<X1, F<X2, F<X3, void>>>>));
38 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_reverse_fold_q<mp_list<X1, X2, X3, X4>, void, Q>, F<X1, F<X2, F<X3, F<X4, void>>>>>));
39 }
40
41 {
42 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_reverse_fold_q<std::tuple<>, void, Q>, void>));
43 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_reverse_fold_q<std::tuple<X1>, void, Q>, F<X1, void>>));
44 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_reverse_fold_q<std::tuple<X1, X2>, void, Q>, F<X1, F<X2, void>>>));
45 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_reverse_fold_q<std::tuple<X1, X2, X3>, void, Q>, F<X1, F<X2, F<X3, void>>>>));
46 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_reverse_fold_q<std::tuple<X1, X2, X3, X4>, void, Q>, F<X1, F<X2, F<X3, F<X4, void>>>>>));
47 }
48
49 using boost::mp11::mp_bind;
50 using boost::mp11::_1;
51 using boost::mp11::_2;
52
53 using boost::mp11::mp_push_back;
54
55 {
56 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_reverse_fold_q<std::tuple<X1, X2, X3, X4>, mp_list<>, mp_bind<mp_push_back, _2, _1>>, mp_list<X4, X3, X2, X1>>));
57 }
58
59 using boost::mp11::mp_push_front;
60
61 {
62 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_reverse_fold_q<std::tuple<X1, X2, X3, X4>, mp_list<>, mp_bind<mp_push_front, _2, _1>>, mp_list<X1, X2, X3, X4>>));
63 }
64
65 return boost::report_errors();
66 }
67