1 // Copyright 2015 Peter Dimov.
2 // Copyright 2019 Kris Jusiak.
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 #include <boost/mp11/detail/config.hpp>
10
11 #if BOOST_MP11_WORKAROUND( BOOST_MP11_GCC, < 40800 )
12 # pragma GCC diagnostic ignored "-Wsign-compare"
13 #endif
14
15 #include <boost/mp11/algorithm.hpp>
16 #include <boost/mp11/list.hpp>
17 #include <boost/mp11/integral.hpp>
18 #include <boost/core/lightweight_test_trait.hpp>
19 #include <type_traits>
20 #include <tuple>
21 #include <cstddef>
22
23 using boost::mp11::mp_bool;
24
25 #if !BOOST_MP11_WORKAROUND( BOOST_MSVC, < 1910 )
26
27 template<class T, class U> using Eq1 = mp_bool< T::value == U::value >;
28 template<class T, class U> using Eq2 = mp_bool< sizeof(T) == sizeof(U) >;
29
30 #else
31
32 template<class T, class U> struct Eq1: mp_bool< T::value == U::value > {};
33 template<class T, class U> struct Eq2: mp_bool< sizeof(T) == sizeof(U) > {};
34
35 #endif
36
main()37 int main()
38 {
39 using boost::mp11::mp_list;
40 using boost::mp11::mp_unique_if;
41
42 {
43 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_unique_if<mp_list<>, std::is_same>, mp_list<>>));
44
45 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_unique_if<mp_list<void>, std::is_same>, mp_list<void>>));
46 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_unique_if<mp_list<void, void>, std::is_same>, mp_list<void>>));
47 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_unique_if<mp_list<void, void, void>, std::is_same>, mp_list<void>>));
48 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_unique_if<mp_list<void, void, void, void>, std::is_same>, mp_list<void>>));
49
50 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_unique_if<mp_list<void, int>, std::is_same>, mp_list<void, int>>));
51 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_unique_if<mp_list<void, void, void, int, int, int>, std::is_same>, mp_list<void, int>>));
52 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_unique_if<mp_list<void, int, void, int, int, void, int, int, int>, std::is_same>, mp_list<void, int>>));
53
54 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_unique_if<mp_list<void, int, char[]>, std::is_same>, mp_list<void, int, char[]>>));
55 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_unique_if<mp_list<void, int, char[], void, int, char[], void, int, char[]>, std::is_same>, mp_list<void, int, char[]>>));
56 }
57
58 {
59 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_unique_if<std::tuple<>, std::is_same>, std::tuple<>>));
60
61 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_unique_if<std::tuple<void>, std::is_same>, std::tuple<void>>));
62 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_unique_if<std::tuple<void, void>, std::is_same>, std::tuple<void>>));
63 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_unique_if<std::tuple<void, void, void>, std::is_same>, std::tuple<void>>));
64 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_unique_if<std::tuple<void, void, void, void>, std::is_same>, std::tuple<void>>));
65
66 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_unique_if<std::tuple<void, int>, std::is_same>, std::tuple<void, int>>));
67 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_unique_if<std::tuple<void, void, void, int, int, int>, std::is_same>, std::tuple<void, int>>));
68 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_unique_if<std::tuple<void, int, void, int, int, void, int, int, int>, std::is_same>, std::tuple<void, int>>));
69
70 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_unique_if<std::tuple<void, int, char[]>, std::is_same>, std::tuple<void, int, char[]>>));
71 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_unique_if<std::tuple<void, int, char[], void, int, char[], void, int, char[]>, std::is_same>, std::tuple<void, int, char[]>>));
72 }
73
74 {
75 using boost::mp11::mp_iota_c;
76 using boost::mp11::mp_size_t;
77
78 using L1 = mp_iota_c<32>;
79
80 using R1 = mp_unique_if<L1, std::is_same>;
81 BOOST_TEST_TRAIT_TRUE((std::is_same<R1, L1>));
82
83 using R2 = mp_unique_if<L1, Eq1>;
84 BOOST_TEST_TRAIT_TRUE((std::is_same<R2, L1>));
85
86 using R3 = mp_unique_if<L1, Eq2>;
87 BOOST_TEST_TRAIT_TRUE((std::is_same<R3, mp_list<mp_size_t<0>>>));
88 }
89
90 {
91 using boost::mp11::mp_list_c;
92 using boost::mp11::mp_append;
93 using boost::mp11::mp_push_back;
94 using boost::mp11::mp_int;
95
96 using L1 = mp_list_c<std::size_t, 0, 1, 2, 3>;
97 using L2 = mp_list_c<int, 1, 2, 3, 4>;
98 using L3 = mp_list_c<long, 2, 3, 4, 5>;
99
100 using R1 = mp_unique_if<mp_append<L1, L2, L3>, Eq1>;
101 BOOST_TEST_TRAIT_TRUE((std::is_same<R1, mp_push_back<L1, mp_int<4>, std::integral_constant<long, 5>>>));
102 }
103
104 {
105 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_unique_if<std::tuple<char[1], char[2], char[1], char[2], char[2], char[1], char[2], char[2], char[2]>, Eq2>, std::tuple<char[1], char[2]>>));
106 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_unique_if<std::tuple<char[1], char[2], char[3], char[1], char[2], char[3], char[1], char[2], char[3]>, Eq2>, std::tuple<char[1], char[2], char[3]>>));
107 }
108
109 return boost::report_errors();
110 }
111