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- // Copyright Louis Dionne 2013-2017
- // 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_SLICE_HPP
- #define BOOST_HANA_TEST_AUTO_SLICE_HPP
- #include <boost/hana/assert.hpp>
- #include <boost/hana/equal.hpp>
- #include <boost/hana/integral_constant.hpp>
- #include <boost/hana/range.hpp>
- #include <boost/hana/slice.hpp>
- #include <boost/hana/tuple.hpp>
- #include "test_case.hpp"
- #include <laws/base.hpp>
- #include <support/seq.hpp>
- #include <cstddef>
- TestCase test_slice{[]{
- namespace hana = boost::hana;
- using hana::test::ct_eq;
- constexpr auto foldable = ::seq;
- struct undefined { };
- //////////////////////////////////////////////////////////////////////////
- // Test with arbitrary indices
- //////////////////////////////////////////////////////////////////////////
- BOOST_HANA_CONSTANT_CHECK(hana::equal(
- hana::slice(MAKE_TUPLE(),
- foldable()),
- MAKE_TUPLE()
- ));
- BOOST_HANA_CONSTANT_CHECK(hana::equal(
- hana::slice(MAKE_TUPLE(undefined{}),
- foldable()),
- MAKE_TUPLE()
- ));
- BOOST_HANA_CONSTANT_CHECK(hana::equal(
- hana::slice(MAKE_TUPLE(undefined{}, undefined{}),
- foldable()),
- MAKE_TUPLE()
- ));
- BOOST_HANA_CONSTANT_CHECK(hana::equal(
- hana::slice(MAKE_TUPLE(ct_eq<0>{}),
- foldable(hana::size_c<0>)),
- MAKE_TUPLE(ct_eq<0>{})
- ));
- BOOST_HANA_CONSTANT_CHECK(hana::equal(
- hana::slice(MAKE_TUPLE(ct_eq<0>{}, undefined{}),
- foldable(hana::size_c<0>)),
- MAKE_TUPLE(ct_eq<0>{})
- ));
- BOOST_HANA_CONSTANT_CHECK(hana::equal(
- hana::slice(MAKE_TUPLE(undefined{}, ct_eq<1>{}),
- foldable(hana::size_c<1>)),
- MAKE_TUPLE(ct_eq<1>{})
- ));
- BOOST_HANA_CONSTANT_CHECK(hana::equal(
- hana::slice(MAKE_TUPLE(ct_eq<0>{}, ct_eq<1>{}),
- foldable(hana::size_c<0>, hana::size_c<1>)),
- MAKE_TUPLE(ct_eq<0>{}, ct_eq<1>{})
- ));
- BOOST_HANA_CONSTANT_CHECK(hana::equal(
- hana::slice(MAKE_TUPLE(ct_eq<0>{}, ct_eq<1>{}),
- foldable(hana::size_c<1>, hana::size_c<0>)),
- MAKE_TUPLE(ct_eq<1>{}, ct_eq<0>{})
- ));
- BOOST_HANA_CONSTANT_CHECK(hana::equal(
- hana::slice(MAKE_TUPLE(ct_eq<0>{}, ct_eq<1>{}),
- foldable(hana::size_c<0>, hana::size_c<0>)),
- MAKE_TUPLE(ct_eq<0>{}, ct_eq<0>{})
- ));
- BOOST_HANA_CONSTANT_CHECK(hana::equal(
- hana::slice(MAKE_TUPLE(ct_eq<0>{}, ct_eq<1>{}),
- foldable(hana::size_c<1>, hana::size_c<1>)),
- MAKE_TUPLE(ct_eq<1>{}, ct_eq<1>{})
- ));
- BOOST_HANA_CONSTANT_CHECK(hana::equal(
- hana::slice(MAKE_TUPLE(ct_eq<0>{}, ct_eq<1>{}, ct_eq<2>{}),
- foldable(hana::size_c<0>, hana::size_c<1>, hana::size_c<2>)),
- MAKE_TUPLE(ct_eq<0>{}, ct_eq<1>{}, ct_eq<2>{})
- ));
- BOOST_HANA_CONSTANT_CHECK(hana::equal(
- hana::slice(MAKE_TUPLE(ct_eq<0>{}, ct_eq<1>{}, ct_eq<2>{}),
- foldable(hana::size_c<0>, hana::size_c<2>, hana::size_c<1>)),
- MAKE_TUPLE(ct_eq<0>{}, ct_eq<2>{}, ct_eq<1>{})
- ));
- BOOST_HANA_CONSTANT_CHECK(hana::equal(
- hana::slice(MAKE_TUPLE(ct_eq<0>{}, ct_eq<1>{}, ct_eq<2>{}),
- foldable(hana::size_c<0>, hana::size_c<2>, hana::size_c<1>, hana::size_c<0>)),
- MAKE_TUPLE(ct_eq<0>{}, ct_eq<2>{}, ct_eq<1>{}, ct_eq<0>{})
- ));
- BOOST_HANA_CONSTANT_CHECK(hana::equal(
- hana::slice(MAKE_TUPLE(ct_eq<0>{}, ct_eq<1>{}, ct_eq<2>{}),
- foldable(hana::size_c<0>, hana::size_c<2>, hana::size_c<1>, hana::size_c<0>, hana::size_c<1>)),
- MAKE_TUPLE(ct_eq<0>{}, ct_eq<2>{}, ct_eq<1>{}, ct_eq<0>{}, ct_eq<1>{})
- ));
- // Try with a tuple_c
- BOOST_HANA_CONSTANT_CHECK(hana::equal(
- hana::slice(MAKE_TUPLE(ct_eq<0>{}, ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{}),
- hana::tuple_c<unsigned, 1, 3, 2>),
- MAKE_TUPLE(ct_eq<1>{}, ct_eq<3>{}, ct_eq<2>{})
- ));
- //////////////////////////////////////////////////////////////////////////
- // Test with a `range` (check the optimization for contiguous indices)
- //////////////////////////////////////////////////////////////////////////
- BOOST_HANA_CONSTANT_CHECK(hana::equal(
- hana::slice(MAKE_TUPLE(),
- hana::range_c<std::size_t, 0, 0>),
- MAKE_TUPLE()
- ));
- BOOST_HANA_CONSTANT_CHECK(hana::equal(
- hana::slice(MAKE_TUPLE(undefined{}),
- hana::range_c<std::size_t, 0, 0>),
- MAKE_TUPLE()
- ));
- BOOST_HANA_CONSTANT_CHECK(hana::equal(
- hana::slice(MAKE_TUPLE(undefined{}, undefined{}),
- hana::range_c<std::size_t, 0, 0>),
- MAKE_TUPLE()
- ));
- BOOST_HANA_CONSTANT_CHECK(hana::equal(
- hana::slice(MAKE_TUPLE(ct_eq<0>{}),
- hana::range_c<std::size_t, 0, 1>),
- MAKE_TUPLE(ct_eq<0>{})
- ));
- BOOST_HANA_CONSTANT_CHECK(hana::equal(
- hana::slice(MAKE_TUPLE(ct_eq<0>{}, undefined{}),
- hana::range_c<std::size_t, 0, 1>),
- MAKE_TUPLE(ct_eq<0>{})
- ));
- BOOST_HANA_CONSTANT_CHECK(hana::equal(
- hana::slice(MAKE_TUPLE(undefined{}, ct_eq<1>{}),
- hana::range_c<std::size_t, 1, 2>),
- MAKE_TUPLE(ct_eq<1>{})
- ));
- BOOST_HANA_CONSTANT_CHECK(hana::equal(
- hana::slice(MAKE_TUPLE(undefined{}, ct_eq<1>{}, undefined{}),
- hana::range_c<std::size_t, 1, 2>),
- MAKE_TUPLE(ct_eq<1>{})
- ));
- BOOST_HANA_CONSTANT_CHECK(hana::equal(
- hana::slice(MAKE_TUPLE(ct_eq<0>{}, ct_eq<1>{}),
- hana::range_c<std::size_t, 0, 2>),
- MAKE_TUPLE(ct_eq<0>{}, ct_eq<1>{})
- ));
- BOOST_HANA_CONSTANT_CHECK(hana::equal(
- hana::slice(MAKE_TUPLE(ct_eq<0>{}, ct_eq<1>{}, undefined{}),
- hana::range_c<std::size_t, 0, 2>),
- MAKE_TUPLE(ct_eq<0>{}, ct_eq<1>{})
- ));
- BOOST_HANA_CONSTANT_CHECK(hana::equal(
- hana::slice(MAKE_TUPLE(undefined{}, ct_eq<1>{}, ct_eq<2>{}),
- hana::range_c<std::size_t, 1, 3>),
- MAKE_TUPLE(ct_eq<1>{}, ct_eq<2>{})
- ));
- BOOST_HANA_CONSTANT_CHECK(hana::equal(
- hana::slice(MAKE_TUPLE(undefined{}, ct_eq<1>{}, ct_eq<2>{}, undefined{}),
- hana::range_c<std::size_t, 1, 3>),
- MAKE_TUPLE(ct_eq<1>{}, ct_eq<2>{})
- ));
- }};
- #endif // !BOOST_HANA_TEST_AUTO_SLICE_HPP
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