projects / ceph.git / blame
| Commit | Line | Data |
|---|---|---|
| b32b8144 | 1 | // Copyright Louis Dionne 2013-2017 |
| 7c673cae FG |
2 | // Distributed under the Boost Software License, Version 1.0. |
| 3 | // (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt) | |
| 4 | ||
| 5 | #ifndef BOOST_HANA_TEST_LAWS_GROUP_HPP | |
| 6 | #define BOOST_HANA_TEST_LAWS_GROUP_HPP | |
| 7 | ||
| 8 | #include <boost/hana/assert.hpp> | |
| 9 | #include <boost/hana/bool.hpp> | |
| 10 | #include <boost/hana/concept/comparable.hpp> | |
| 11 | #include <boost/hana/core/when.hpp> | |
| 12 | #include <boost/hana/concept/group.hpp> | |
| 13 | #include <boost/hana/lazy.hpp> | |
| 14 | ||
| 15 | #include <laws/base.hpp> | |
| 16 | ||
| 17 | ||
| 18 | namespace boost { namespace hana { namespace test { | |
| 19 | template <typename G, typename = when<true>> | |
| 20 | struct TestGroup : TestGroup<G, laws> { | |
| 21 | using TestGroup<G, laws>::TestGroup; | |
| 22 | }; | |
| 23 | ||
| 24 | template <typename G> | |
| 25 | struct TestGroup<G, laws> { | |
| 26 | template <typename Xs> | |
| 27 | TestGroup(Xs xs) { | |
| 28 | hana::for_each(xs, [](auto x) { | |
| b32b8144 | 29 | static_assert(Group<decltype(x)>{}, ""); |
| 7c673cae FG |
30 | }); |
| 31 | ||
| 32 | foreach2(xs, [](auto x, auto y) { | |
| 33 | ||
| 34 | // left inverse | |
| 35 | BOOST_HANA_CHECK(hana::equal( | |
| 36 | hana::plus(x, hana::negate(x)), | |
| 37 | zero<G>() | |
| 38 | )); | |
| 39 | ||
| 40 | // right inverse | |
| 41 | BOOST_HANA_CHECK(hana::equal( | |
| 42 | hana::plus(hana::negate(x), x), | |
| 43 | zero<G>() | |
| 44 | )); | |
| 45 | ||
| 46 | // default definition of minus | |
| 47 | BOOST_HANA_CHECK(hana::equal( | |
| 48 | hana::minus(x, y), | |
| 49 | hana::plus(x, hana::negate(y)) | |
| 50 | )); | |
| 51 | ||
| 52 | BOOST_HANA_CHECK(hana::equal( | |
| 53 | hana::minus(y, x), | |
| 54 | hana::plus(y, hana::negate(x)) | |
| 55 | )); | |
| 56 | ||
| 57 | // default definition of negate | |
| 58 | BOOST_HANA_CHECK(hana::equal( | |
| 59 | hana::negate(hana::negate(x)), | |
| 60 | x | |
| 61 | )); | |
| 62 | }); | |
| 63 | } | |
| 64 | }; | |
| 65 | ||
| 66 | template <typename C> | |
| 67 | struct TestGroup<C, when<Constant<C>::value>> | |
| 68 | : TestGroup<C, laws> | |
| 69 | { | |
| 70 | template <typename Xs> | |
| 71 | TestGroup(Xs xs) : TestGroup<C, laws>{xs} { | |
| 72 | foreach2(xs, [](auto x, auto y) { | |
| 73 | ||
| 74 | BOOST_HANA_CHECK(hana::equal( | |
| 75 | hana::negate(hana::value(x)), | |
| 76 | hana::value(hana::negate(x)) | |
| 77 | )); | |
| 78 | ||
| 79 | BOOST_HANA_CHECK(hana::equal( | |
| 80 | hana::minus(hana::value(x), hana::value(y)), | |
| 81 | hana::value(hana::minus(x, y)) | |
| 82 | )); | |
| 83 | ||
| 84 | }); | |
| 85 | } | |
| 86 | }; | |
| 87 | }}} // end namespace boost::hana::test | |
| 88 | ||
| 89 | #endif // !BOOST_HANA_TEST_LAWS_GROUP_HPP |