| 1 | // Copyright Louis Dionne 2013-2022 |
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| 2 | // Distributed under the Boost Software License, Version 1.0. |
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| 3 | // (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt) |
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| 4 | |
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| 5 | #include <boost/hana/detail/any_of.hpp> |
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| 6 | #include <boost/hana/detail/wrong.hpp> |
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| 7 | #include <boost/hana/integral_constant.hpp> |
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| 8 | namespace hana = boost::hana; |
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| 9 | |
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| 10 | |
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| 11 | template <typename I> |
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| 12 | struct is_even { |
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| 13 | static constexpr bool value = I::value % 2 == 0; |
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| 14 | }; |
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| 15 | |
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| 16 | |
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| 17 | static_assert(!hana::detail::any_of<is_even>::value, "" ); |
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| 18 | static_assert(!hana::detail::any_of<is_even, hana::int_<1>>::value, "" ); |
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| 19 | static_assert(!hana::detail::any_of<is_even, hana::int_<1>, hana::int_<3>>::value, "" ); |
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| 20 | static_assert(!hana::detail::any_of<is_even, hana::int_<1>, hana::int_<3>, hana::int_<5>>::value, "" ); |
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| 21 | static_assert(!hana::detail::any_of<is_even, hana::int_<1>, hana::int_<3>, hana::int_<5>, hana::int_<7>>::value, "" ); |
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| 22 | |
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| 23 | static_assert(hana::detail::any_of<is_even, hana::int_<0>>::value, "" ); |
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| 24 | static_assert(hana::detail::any_of<is_even, hana::int_<0>, hana::int_<2>>::value, "" ); |
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| 25 | static_assert(hana::detail::any_of<is_even, hana::int_<0>, hana::int_<2>, hana::int_<4>>::value, "" ); |
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| 26 | static_assert(hana::detail::any_of<is_even, hana::int_<0>, hana::int_<2>, hana::int_<4>, hana::int_<6>>::value, "" ); |
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| 27 | |
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| 28 | static_assert(hana::detail::any_of<is_even, hana::int_<0>, hana::int_<1>>::value, "" ); |
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| 29 | static_assert(hana::detail::any_of<is_even, hana::int_<0>, hana::int_<1>, hana::int_<2>>::value, "" ); |
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| 30 | static_assert(hana::detail::any_of<is_even, hana::int_<0>, hana::int_<1>, hana::int_<2>, hana::int_<3>>::value, "" ); |
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| 31 | static_assert(hana::detail::any_of<is_even, hana::int_<0>, hana::int_<1>, hana::int_<2>, hana::int_<3>, hana::int_<4>>::value, "" ); |
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| 32 | static_assert(hana::detail::any_of<is_even, hana::int_<1>, hana::int_<3>, hana::int_<5>, hana::int_<8>>::value, "" ); |
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| 33 | static_assert(hana::detail::any_of<is_even, hana::int_<1>, hana::int_<8>, hana::int_<5>, hana::int_<7>>::value, "" ); |
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| 34 | |
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| 35 | // Make sure we short-circuit properly |
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| 36 | template <typename ...Dummy> |
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| 37 | struct fail { |
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| 38 | static_assert(hana::detail::wrong<Dummy...>::value, |
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| 39 | "this must never be instantiated" ); |
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| 40 | }; |
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| 41 | static_assert(hana::detail::any_of<is_even, hana::int_<1>, hana::int_<2>, fail<>>::value, "" ); |
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| 42 | static_assert(hana::detail::any_of<is_even, hana::int_<1>, hana::int_<2>, fail<>, hana::int_<3>>::value, "" ); |
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| 43 | static_assert(hana::detail::any_of<is_even, hana::int_<1>, hana::int_<2>, fail<>, hana::int_<4>>::value, "" ); |
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| 44 | |
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| 45 | int main() { } |
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| 46 | |
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