102 lines
3.9 KiB
C++
102 lines
3.9 KiB
C++
// Copyright Louis Dionne 2013-2017
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// Distributed under the Boost Software License, Version 1.0.
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// (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
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#include <boost/hana/assert.hpp>
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#include <boost/hana/equal.hpp>
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#include <boost/hana/ext/std/integer_sequence.hpp>
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#include <boost/hana/ext/std/integral_constant.hpp>
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#include <boost/hana/find_if.hpp>
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#include <boost/hana/optional.hpp>
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#include <cstddef>
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#include <type_traits>
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#include <utility>
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namespace hana = boost::hana;
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struct undefined { };
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int main() {
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BOOST_HANA_CONSTANT_CHECK(hana::equal(
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hana::find_if(std::index_sequence<>{},
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hana::equal.to(undefined{})),
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hana::nothing
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));
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BOOST_HANA_CONSTANT_CHECK(hana::equal(
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hana::find_if(std::index_sequence<0>{},
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hana::equal.to(std::integral_constant<std::size_t, 0>{})),
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hana::just(std::integral_constant<std::size_t, 0>{})
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));
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BOOST_HANA_CONSTANT_CHECK(hana::equal(
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hana::find_if(std::index_sequence<0>{},
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hana::equal.to(std::integral_constant<std::size_t, 1>{})),
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hana::nothing
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));
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BOOST_HANA_CONSTANT_CHECK(hana::equal(
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hana::find_if(std::index_sequence<0, 1>{},
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hana::equal.to(std::integral_constant<std::size_t, 0>{})),
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hana::just(std::integral_constant<std::size_t, 0>{})
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));
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BOOST_HANA_CONSTANT_CHECK(hana::equal(
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hana::find_if(std::index_sequence<0, 1>{},
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hana::equal.to(std::integral_constant<std::size_t, 1>{})),
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hana::just(std::integral_constant<std::size_t, 1>{})
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));
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BOOST_HANA_CONSTANT_CHECK(hana::equal(
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hana::find_if(std::index_sequence<0, 1>{},
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hana::equal.to(std::integral_constant<std::size_t, 2>{})),
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hana::nothing
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));
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BOOST_HANA_CONSTANT_CHECK(hana::equal(
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hana::find_if(std::index_sequence<0, 1, 2>{},
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hana::equal.to(std::integral_constant<std::size_t, 0>{})),
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hana::just(std::integral_constant<std::size_t, 0>{})
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));
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BOOST_HANA_CONSTANT_CHECK(hana::equal(
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hana::find_if(std::index_sequence<0, 1, 2>{},
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hana::equal.to(std::integral_constant<std::size_t, 1>{})),
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hana::just(std::integral_constant<std::size_t, 1>{})
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));
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BOOST_HANA_CONSTANT_CHECK(hana::equal(
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hana::find_if(std::index_sequence<0, 1, 2>{},
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hana::equal.to(std::integral_constant<std::size_t, 2>{})),
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hana::just(std::integral_constant<std::size_t, 2>{})
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));
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BOOST_HANA_CONSTANT_CHECK(hana::equal(
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hana::find_if(std::index_sequence<0, 1, 2>{},
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hana::equal.to(std::integral_constant<std::size_t, 3>{})),
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hana::nothing
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));
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BOOST_HANA_CONSTANT_CHECK(hana::equal(
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hana::find_if(std::index_sequence<0, 1, 2, 3>{},
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hana::equal.to(std::integral_constant<std::size_t, 0>{})),
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hana::just(std::integral_constant<std::size_t, 0>{})
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));
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BOOST_HANA_CONSTANT_CHECK(hana::equal(
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hana::find_if(std::index_sequence<0, 1, 2, 3>{},
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hana::equal.to(std::integral_constant<std::size_t, 1>{})),
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hana::just(std::integral_constant<std::size_t, 1>{})
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));
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BOOST_HANA_CONSTANT_CHECK(hana::equal(
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hana::find_if(std::index_sequence<0, 1, 2, 3>{},
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hana::equal.to(std::integral_constant<std::size_t, 2>{})),
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hana::just(std::integral_constant<std::size_t, 2>{})
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));
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BOOST_HANA_CONSTANT_CHECK(hana::equal(
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hana::find_if(std::index_sequence<0, 1, 2, 3>{},
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hana::equal.to(std::integral_constant<std::size_t, 3>{})),
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hana::just(std::integral_constant<std::size_t, 3>{})
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));
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BOOST_HANA_CONSTANT_CHECK(hana::equal(
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hana::find_if(std::index_sequence<0, 1, 2, 3>{},
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hana::equal.to(std::integral_constant<std::size_t, 4>{})),
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hana::nothing
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));
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}
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