123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081 |
- // Copyright Louis Dionne 2013-2017
- // Copyright Jason Rice 2017
- // Distributed under the Boost Software License, Version 1.0.
- // (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
- #ifndef BOOST_HANA_TEST_AUTO_INDEX_IF_HPP
- #define BOOST_HANA_TEST_AUTO_INDEX_IF_HPP
- #include <boost/hana/assert.hpp>
- #include <boost/hana/equal.hpp>
- #include <boost/hana/index_if.hpp>
- #include <boost/hana/integral_constant.hpp>
- #include <boost/hana/optional.hpp>
- #include "test_case.hpp"
- #include <laws/base.hpp>
- #include <support/tracked.hpp>
- namespace _test_index_if_detail { template <int> struct invalid { }; }
- TestCase test_index_if{[]{
- namespace hana = boost::hana;
- using hana::test::ct_eq;
- using _test_index_if_detail::invalid;
- BOOST_HANA_CONSTANT_CHECK(hana::equal(
- hana::index_if(MAKE_TUPLE(), hana::equal.to(ct_eq<0>{})),
- hana::nothing
- ));
- BOOST_HANA_CONSTANT_CHECK(hana::equal(
- hana::index_if(MAKE_TUPLE(ct_eq<0>{}), hana::equal.to(ct_eq<0>{})),
- hana::just(hana::size_c<0>)
- ));
- BOOST_HANA_CONSTANT_CHECK(hana::equal(
- hana::index_if(MAKE_TUPLE(ct_eq<0>{}), hana::equal.to(ct_eq<42>{})),
- hana::nothing
- ));
- BOOST_HANA_CONSTANT_CHECK(hana::equal(
- hana::index_if(MAKE_TUPLE(ct_eq<0>{}, ct_eq<1>{}, ct_eq<2>{}), hana::equal.to(ct_eq<0>{})),
- hana::just(hana::size_c<0>)
- ));
- BOOST_HANA_CONSTANT_CHECK(hana::equal(
- hana::index_if(MAKE_TUPLE(ct_eq<0>{}, ct_eq<1>{}, ct_eq<2>{}), hana::equal.to(ct_eq<1>{})),
- hana::just(hana::size_c<1>)
- ));
- BOOST_HANA_CONSTANT_CHECK(hana::equal(
- hana::index_if(MAKE_TUPLE(ct_eq<0>{}, ct_eq<1>{}, ct_eq<2>{}), hana::equal.to(ct_eq<2>{})),
- hana::just(hana::size_c<2>)
- ));
- BOOST_HANA_CONSTANT_CHECK(hana::equal(
- hana::index_if(MAKE_TUPLE(ct_eq<0>{}, ct_eq<1>{}, ct_eq<2>{}), hana::equal.to(ct_eq<42>{})),
- hana::nothing
- ));
- #ifndef MAKE_TUPLE_NO_CONSTEXPR
- auto type_equal = [](auto type) { return [=](auto&& value) {
- return hana::equal(hana::typeid_(value), type);
- };};
- static_assert(decltype(hana::equal(
- hana::index_if(MAKE_TUPLE(1, '2', 3.3), type_equal(hana::type_c<int>)),
- hana::just(hana::size_c<0>)
- )){}, "");
- static_assert(decltype(hana::equal(
- hana::index_if(MAKE_TUPLE(1, '2', 3.3), type_equal(hana::type_c<char>)),
- hana::just(hana::size_c<1>)
- )){}, "");
- static_assert(decltype(hana::equal(
- hana::index_if(MAKE_TUPLE(1, '2', 3.3), type_equal(hana::type_c<double>)),
- hana::just(hana::size_c<2>)
- )){}, "");
- static_assert(decltype(hana::equal(
- hana::index_if(MAKE_TUPLE(1, '2', 3.3), type_equal(hana::type_c<invalid<42>>)),
- hana::nothing
- )){}, "");
- #endif
- }};
- #endif // !BOOST_HANA_TEST_AUTO_INDEX_IF_HPP
|