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/utility.hpp>
14 #include <boost/core/lightweight_test_trait.hpp>
15 #include <type_traits>
16 #include <tuple>
17 #include <utility>
18
19 struct X1 {};
20 struct X2 {};
21 struct X3 {};
22 struct X4 {};
23
24 using boost::mp11::mp_not;
25 using boost::mp11::mp_quote;
26
27 template<class T> using add_pointer = T*;
28 using Q_add_pointer = mp_quote<add_pointer>;
29
30 template<class T, class...> using is_not_ref = mp_not<std::is_reference<T>>;
31 using Q_is_not_ref = mp_quote<is_not_ref>;
32
33 template<class T1, class T2> using second = T2;
34 using Q_second = mp_quote<second>;
35
36 template<class T1, class T2, class T3> using third = T3;
37 using Q_third = mp_quote<third>;
38
39 template<class T1, class T2, class T3, class T4> using fourth = T4;
40 using Q_fourth = mp_quote<fourth>;
41
42 template<class T1, class T2, class T3, class T4, class T5> using fifth = T5;
43 using Q_fifth = mp_quote<fifth>;
44
main()45 int main()
46 {
47 using boost::mp11::mp_list;
48 using boost::mp11::mp_transform_if_q;
49 using boost::mp11::mp_size_t;
50 using boost::mp11::mp_size;
51 using boost::mp11::mp_fill;
52 using boost::mp11::mp_iota;
53
54 using L1 = mp_list<X1, X2&, X3 const, X4 const&>;
55
56 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_transform_if_q<Q_is_not_ref, Q_add_pointer, L1>, mp_list<X1*, X2&, X3 const*, X4 const&>>));
57
58 using L2 = std::tuple<X1, X2&, X3 const, X4 const&>;
59
60 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_transform_if_q<Q_is_not_ref, Q_add_pointer, L2>, std::tuple<X1*, X2&, X3 const*, X4 const&>>));
61
62 using L3 = std::pair<X1 const, X2&>;
63
64 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_transform_if_q<Q_is_not_ref, Q_add_pointer, L3>, std::pair<X1 const*, X2&>>));
65
66 //
67
68 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_transform_if_q<Q_is_not_ref, Q_second, L1, mp_fill<L1, void>>, mp_list<void, X2&, void, X4 const&>>));
69 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_transform_if_q<Q_is_not_ref, Q_second, L2, mp_fill<L2, void>>, std::tuple<void, X2&, void, X4 const&>>));
70 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_transform_if_q<Q_is_not_ref, Q_second, L3, mp_fill<L3, void>>, std::pair<void, X2&>>));
71
72 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_transform_if_q<Q_is_not_ref, Q_third, L1, L1, mp_iota<mp_size<L1>>>, mp_list<mp_size_t<0>, X2&, mp_size_t<2>, X4 const&>>));
73 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_transform_if_q<Q_is_not_ref, Q_third, L2, L2, mp_iota<mp_size<L2>>>, std::tuple<mp_size_t<0>, X2&, mp_size_t<2>, X4 const&>>));
74 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_transform_if_q<Q_is_not_ref, Q_third, L3, L3, mp_iota<mp_size<L3>>>, std::pair<mp_size_t<0>, X2&>>));
75
76 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_transform_if_q<Q_is_not_ref, Q_fourth, L1, L1, L1, mp_iota<mp_size<L1>>>, mp_list<mp_size_t<0>, X2&, mp_size_t<2>, X4 const&>>));
77 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_transform_if_q<Q_is_not_ref, Q_fourth, L2, L2, L2, mp_iota<mp_size<L2>>>, std::tuple<mp_size_t<0>, X2&, mp_size_t<2>, X4 const&>>));
78 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_transform_if_q<Q_is_not_ref, Q_fourth, L3, L3, L3, mp_iota<mp_size<L3>>>, std::pair<mp_size_t<0>, X2&>>));
79
80 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_transform_if_q<Q_is_not_ref, Q_fifth, L1, L1, L1, L1, mp_iota<mp_size<L1>>>, mp_list<mp_size_t<0>, X2&, mp_size_t<2>, X4 const&>>));
81 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_transform_if_q<Q_is_not_ref, Q_fifth, L2, L2, L2, L2, mp_iota<mp_size<L2>>>, std::tuple<mp_size_t<0>, X2&, mp_size_t<2>, X4 const&>>));
82 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_transform_if_q<Q_is_not_ref, Q_fifth, L3, L3, L3, L3, mp_iota<mp_size<L3>>>, std::pair<mp_size_t<0>, X2&>>));
83
84 //
85
86 return boost::report_errors();
87 }
88