projects / ceph.git / blame
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|---|---|---|
| b32b8144 FG |
1 | |
| 2 | // Copyright 2015 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/core/lightweight_test_trait.hpp> | |
| 14 | #include <type_traits> | |
| 15 | #include <tuple> | |
| 16 | #include <utility> | |
| 17 | ||
| 18 | struct X1 {}; | |
| 19 | struct X2 {}; | |
| 20 | struct X3 {}; | |
| 21 | struct X4 {}; | |
| 22 | struct X5 {}; | |
| 23 | ||
| 24 | int main() | |
| 25 | { | |
| 26 | using boost::mp11::mp_list; | |
| 27 | using boost::mp11::mp_take; | |
| 28 | using boost::mp11::mp_take_c; | |
| 29 | using boost::mp11::mp_size_t; | |
| 30 | ||
| 31 | { | |
| 32 | using L1 = mp_list<>; | |
| 33 | ||
| 34 | BOOST_TEST_TRAIT_TRUE((std::is_same<mp_take_c<L1, 0>, L1>)); | |
| 35 | BOOST_TEST_TRAIT_TRUE((std::is_same<mp_take<L1, mp_size_t<0>>, L1>)); | |
| 36 | ||
| 37 | using L2 = mp_list<X1, X2, X3, X4, X5>; | |
| 38 | ||
| 39 | BOOST_TEST_TRAIT_TRUE((std::is_same<mp_take_c<L2, 0>, mp_list<>>)); | |
| 40 | BOOST_TEST_TRAIT_TRUE((std::is_same<mp_take_c<L2, 1>, mp_list<X1>>)); | |
| 41 | BOOST_TEST_TRAIT_TRUE((std::is_same<mp_take_c<L2, 2>, mp_list<X1, X2>>)); | |
| 42 | BOOST_TEST_TRAIT_TRUE((std::is_same<mp_take_c<L2, 3>, mp_list<X1, X2, X3>>)); | |
| 43 | BOOST_TEST_TRAIT_TRUE((std::is_same<mp_take_c<L2, 4>, mp_list<X1, X2, X3, X4>>)); | |
| 44 | BOOST_TEST_TRAIT_TRUE((std::is_same<mp_take_c<L2, 5>, mp_list<X1, X2, X3, X4, X5>>)); | |
| 45 | ||
| 46 | BOOST_TEST_TRAIT_TRUE((std::is_same<mp_take<L2, mp_size_t<0>>, mp_list<>>)); | |
| 47 | BOOST_TEST_TRAIT_TRUE((std::is_same<mp_take<L2, mp_size_t<1>>, mp_list<X1>>)); | |
| 48 | BOOST_TEST_TRAIT_TRUE((std::is_same<mp_take<L2, mp_size_t<2>>, mp_list<X1, X2>>)); | |
| 49 | BOOST_TEST_TRAIT_TRUE((std::is_same<mp_take<L2, mp_size_t<3>>, mp_list<X1, X2, X3>>)); | |
| 50 | BOOST_TEST_TRAIT_TRUE((std::is_same<mp_take<L2, mp_size_t<4>>, mp_list<X1, X2, X3, X4>>)); | |
| 51 | BOOST_TEST_TRAIT_TRUE((std::is_same<mp_take<L2, mp_size_t<5>>, mp_list<X1, X2, X3, X4, X5>>)); | |
| 52 | ||
| 53 | using L3 = mp_list<X1, X2, X3, X4, X5, X1, X2, X3, X4, X5, X1, X2, X3, X4, X5, X1, X2, X3, X4, X5>; | |
| 54 | ||
| 92f5a8d4 TL |
55 | BOOST_TEST_TRAIT_TRUE((std::is_same<mp_take_c<L3, 6>, mp_list<X1, X2, X3, X4, X5, X1>>)); |
| 56 | BOOST_TEST_TRAIT_TRUE((std::is_same<mp_take_c<L3, 7>, mp_list<X1, X2, X3, X4, X5, X1, X2>>)); | |
| 57 | BOOST_TEST_TRAIT_TRUE((std::is_same<mp_take_c<L3, 8>, mp_list<X1, X2, X3, X4, X5, X1, X2, X3>>)); | |
| 58 | BOOST_TEST_TRAIT_TRUE((std::is_same<mp_take_c<L3, 9>, mp_list<X1, X2, X3, X4, X5, X1, X2, X3, X4>>)); | |
| 59 | BOOST_TEST_TRAIT_TRUE((std::is_same<mp_take_c<L3, 10>, mp_list<X1, X2, X3, X4, X5, X1, X2, X3, X4, X5>>)); | |
| 60 | BOOST_TEST_TRAIT_TRUE((std::is_same<mp_take_c<L3, 11>, mp_list<X1, X2, X3, X4, X5, X1, X2, X3, X4, X5, X1>>)); | |
| 61 | ||
| 62 | BOOST_TEST_TRAIT_TRUE((std::is_same<mp_take<L3, mp_size_t< 6>>, mp_list<X1, X2, X3, X4, X5, X1>>)); | |
| 63 | BOOST_TEST_TRAIT_TRUE((std::is_same<mp_take<L3, mp_size_t< 7>>, mp_list<X1, X2, X3, X4, X5, X1, X2>>)); | |
| 64 | BOOST_TEST_TRAIT_TRUE((std::is_same<mp_take<L3, mp_size_t< 8>>, mp_list<X1, X2, X3, X4, X5, X1, X2, X3>>)); | |
| 65 | BOOST_TEST_TRAIT_TRUE((std::is_same<mp_take<L3, mp_size_t< 9>>, mp_list<X1, X2, X3, X4, X5, X1, X2, X3, X4>>)); | |
| 66 | BOOST_TEST_TRAIT_TRUE((std::is_same<mp_take<L3, mp_size_t<10>>, mp_list<X1, X2, X3, X4, X5, X1, X2, X3, X4, X5>>)); | |
| 67 | BOOST_TEST_TRAIT_TRUE((std::is_same<mp_take<L3, mp_size_t<11>>, mp_list<X1, X2, X3, X4, X5, X1, X2, X3, X4, X5, X1>>)); | |
| b32b8144 FG |
68 | } |
| 69 | ||
| 70 | { | |
| 71 | using L1 = std::tuple<>; | |
| 72 | ||
| 73 | BOOST_TEST_TRAIT_TRUE((std::is_same<mp_take_c<L1, 0>, L1>)); | |
| 74 | BOOST_TEST_TRAIT_TRUE((std::is_same<mp_take<L1, mp_size_t<0>>, L1>)); | |
| 75 | ||
| 76 | using L2 = std::tuple<X1, X2, X3, X4, X5>; | |
| 77 | ||
| 78 | BOOST_TEST_TRAIT_TRUE((std::is_same<mp_take_c<L2, 0>, std::tuple<>>)); | |
| 79 | BOOST_TEST_TRAIT_TRUE((std::is_same<mp_take_c<L2, 1>, std::tuple<X1>>)); | |
| 80 | BOOST_TEST_TRAIT_TRUE((std::is_same<mp_take_c<L2, 2>, std::tuple<X1, X2>>)); | |
| 81 | BOOST_TEST_TRAIT_TRUE((std::is_same<mp_take_c<L2, 3>, std::tuple<X1, X2, X3>>)); | |
| 82 | BOOST_TEST_TRAIT_TRUE((std::is_same<mp_take_c<L2, 4>, std::tuple<X1, X2, X3, X4>>)); | |
| 83 | BOOST_TEST_TRAIT_TRUE((std::is_same<mp_take_c<L2, 5>, std::tuple<X1, X2, X3, X4, X5>>)); | |
| 84 | ||
| 85 | BOOST_TEST_TRAIT_TRUE((std::is_same<mp_take<L2, mp_size_t<0>>, std::tuple<>>)); | |
| 86 | BOOST_TEST_TRAIT_TRUE((std::is_same<mp_take<L2, mp_size_t<1>>, std::tuple<X1>>)); | |
| 87 | BOOST_TEST_TRAIT_TRUE((std::is_same<mp_take<L2, mp_size_t<2>>, std::tuple<X1, X2>>)); | |
| 88 | BOOST_TEST_TRAIT_TRUE((std::is_same<mp_take<L2, mp_size_t<3>>, std::tuple<X1, X2, X3>>)); | |
| 89 | BOOST_TEST_TRAIT_TRUE((std::is_same<mp_take<L2, mp_size_t<4>>, std::tuple<X1, X2, X3, X4>>)); | |
| 90 | BOOST_TEST_TRAIT_TRUE((std::is_same<mp_take<L2, mp_size_t<5>>, std::tuple<X1, X2, X3, X4, X5>>)); | |
| 91 | ||
| 92 | using L3 = std::tuple<X1, X2, X3, X4, X5, X1, X2, X3, X4, X5, X1, X2, X3, X4, X5, X1, X2, X3, X4, X5>; | |
| 93 | ||
| 94 | BOOST_TEST_TRAIT_TRUE((std::is_same<mp_take_c<L3, 8>, std::tuple<X1, X2, X3, X4, X5, X1, X2, X3>>)); | |
| 95 | BOOST_TEST_TRAIT_TRUE((std::is_same<mp_take<L3, mp_size_t<9>>, std::tuple<X1, X2, X3, X4, X5, X1, X2, X3, X4>>)); | |
| 96 | } | |
| 97 | ||
| 98 | { | |
| 99 | using L1 = std::pair<X1, X2>; | |
| 100 | ||
| 101 | BOOST_TEST_TRAIT_TRUE((std::is_same<mp_take_c<L1, 2>, L1>)); | |
| 102 | BOOST_TEST_TRAIT_TRUE((std::is_same<mp_take<L1, mp_size_t<2>>, L1>)); | |
| 103 | } | |
| 104 | ||
| 105 | return boost::report_errors(); | |
| 106 | } |