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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)
#include <boost/hana/assert.hpp>
#include <boost/hana/equal.hpp>
#include <boost/hana/ext/std/integer_sequence.hpp>
#include <boost/hana/ext/std/integral_constant.hpp>
#include <boost/hana/find_if.hpp>
#include <boost/hana/optional.hpp>
#include <cstddef>
#include <type_traits>
#include <utility>
namespace hana = boost::hana;
struct undefined { };
int main() {
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::find_if(std::index_sequence<>{},
hana::equal.to(undefined{})),
hana::nothing
));
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::find_if(std::index_sequence<0>{},
hana::equal.to(std::integral_constant<std::size_t, 0>{})),
hana::just(std::integral_constant<std::size_t, 0>{})
));
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::find_if(std::index_sequence<0>{},
hana::equal.to(std::integral_constant<std::size_t, 1>{})),
hana::nothing
));
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::find_if(std::index_sequence<0, 1>{},
hana::equal.to(std::integral_constant<std::size_t, 0>{})),
hana::just(std::integral_constant<std::size_t, 0>{})
));
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::find_if(std::index_sequence<0, 1>{},
hana::equal.to(std::integral_constant<std::size_t, 1>{})),
hana::just(std::integral_constant<std::size_t, 1>{})
));
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::find_if(std::index_sequence<0, 1>{},
hana::equal.to(std::integral_constant<std::size_t, 2>{})),
hana::nothing
));
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::find_if(std::index_sequence<0, 1, 2>{},
hana::equal.to(std::integral_constant<std::size_t, 0>{})),
hana::just(std::integral_constant<std::size_t, 0>{})
));
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::find_if(std::index_sequence<0, 1, 2>{},
hana::equal.to(std::integral_constant<std::size_t, 1>{})),
hana::just(std::integral_constant<std::size_t, 1>{})
));
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::find_if(std::index_sequence<0, 1, 2>{},
hana::equal.to(std::integral_constant<std::size_t, 2>{})),
hana::just(std::integral_constant<std::size_t, 2>{})
));
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::find_if(std::index_sequence<0, 1, 2>{},
hana::equal.to(std::integral_constant<std::size_t, 3>{})),
hana::nothing
));
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::find_if(std::index_sequence<0, 1, 2, 3>{},
hana::equal.to(std::integral_constant<std::size_t, 0>{})),
hana::just(std::integral_constant<std::size_t, 0>{})
));
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::find_if(std::index_sequence<0, 1, 2, 3>{},
hana::equal.to(std::integral_constant<std::size_t, 1>{})),
hana::just(std::integral_constant<std::size_t, 1>{})
));
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::find_if(std::index_sequence<0, 1, 2, 3>{},
hana::equal.to(std::integral_constant<std::size_t, 2>{})),
hana::just(std::integral_constant<std::size_t, 2>{})
));
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::find_if(std::index_sequence<0, 1, 2, 3>{},
hana::equal.to(std::integral_constant<std::size_t, 3>{})),
hana::just(std::integral_constant<std::size_t, 3>{})
));
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::find_if(std::index_sequence<0, 1, 2, 3>{},
hana::equal.to(std::integral_constant<std::size_t, 4>{})),
hana::nothing
));
}
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