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99 lines
3.6 KiB
C++
99 lines
3.6 KiB
C++
// Copyright 2023 Peter Dimov
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// Distributed under the Boost Software License, Version 1.0.
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// https://www.boost.org/LICENSE_1_0.txt
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#include <boost/mp11/algorithm.hpp>
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#include <boost/mp11/list.hpp>
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#include <boost/mp11/integral.hpp>
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#if !defined(BOOST_MP11_HAS_TEMPLATE_AUTO)
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#pragma message("Test skipped because BOOST_MP11_HAS_TEMPLATE_AUTO is not defined")
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int main() {}
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#else
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#include <boost/core/lightweight_test_trait.hpp>
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template<auto... A> struct V1 {};
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template<int... I> struct V2 {};
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int main()
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{
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using boost::mp11::mp_drop;
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using boost::mp11::mp_drop_c;
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using boost::mp11::mp_size_t;
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{
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using L1 = V1<>;
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BOOST_TEST_TRAIT_SAME(mp_drop_c<L1, 0>, L1);
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BOOST_TEST_TRAIT_SAME(mp_drop<L1, mp_size_t<0>>, L1);
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using L2 = V1<false, 0, true, 1, std::size_t(2)>;
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BOOST_TEST_TRAIT_SAME(mp_drop_c<L2, 0>, V1<false, 0, true, 1, std::size_t(2)>);
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BOOST_TEST_TRAIT_SAME(mp_drop_c<L2, 1>, V1<0, true, 1, std::size_t(2)>);
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BOOST_TEST_TRAIT_SAME(mp_drop_c<L2, 2>, V1<true, 1, std::size_t(2)>);
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BOOST_TEST_TRAIT_SAME(mp_drop_c<L2, 3>, V1<1, std::size_t(2)>);
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BOOST_TEST_TRAIT_SAME(mp_drop_c<L2, 4>, V1<std::size_t(2)>);
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BOOST_TEST_TRAIT_SAME(mp_drop_c<L2, 5>, V1<>);
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BOOST_TEST_TRAIT_SAME(mp_drop<L2, mp_size_t<0>>, V1<false, 0, true, 1, std::size_t(2)>);
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BOOST_TEST_TRAIT_SAME(mp_drop<L2, mp_size_t<1>>, V1<0, true, 1, std::size_t(2)>);
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BOOST_TEST_TRAIT_SAME(mp_drop<L2, mp_size_t<2>>, V1<true, 1, std::size_t(2)>);
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BOOST_TEST_TRAIT_SAME(mp_drop<L2, mp_size_t<3>>, V1<1, std::size_t(2)>);
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BOOST_TEST_TRAIT_SAME(mp_drop<L2, mp_size_t<4>>, V1<std::size_t(2)>);
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BOOST_TEST_TRAIT_SAME(mp_drop<L2, mp_size_t<5>>, V1<>);
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}
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{
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using L1 = V2<>;
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BOOST_TEST_TRAIT_SAME(mp_drop_c<L1, 0>, L1);
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BOOST_TEST_TRAIT_SAME(mp_drop<L1, mp_size_t<0>>, L1);
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using L2 = V2<1, 2, 3, 4, 5>;
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BOOST_TEST_TRAIT_SAME(mp_drop_c<L2, 0>, V2<1, 2, 3, 4, 5>);
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BOOST_TEST_TRAIT_SAME(mp_drop_c<L2, 1>, V2<2, 3, 4, 5>);
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BOOST_TEST_TRAIT_SAME(mp_drop_c<L2, 2>, V2<3, 4, 5>);
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BOOST_TEST_TRAIT_SAME(mp_drop_c<L2, 3>, V2<4, 5>);
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BOOST_TEST_TRAIT_SAME(mp_drop_c<L2, 4>, V2<5>);
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BOOST_TEST_TRAIT_SAME(mp_drop_c<L2, 5>, V2<>);
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BOOST_TEST_TRAIT_SAME(mp_drop<L2, mp_size_t<0>>, V2<1, 2, 3, 4, 5>);
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BOOST_TEST_TRAIT_SAME(mp_drop<L2, mp_size_t<1>>, V2<2, 3, 4, 5>);
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BOOST_TEST_TRAIT_SAME(mp_drop<L2, mp_size_t<2>>, V2<3, 4, 5>);
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BOOST_TEST_TRAIT_SAME(mp_drop<L2, mp_size_t<3>>, V2<4, 5>);
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BOOST_TEST_TRAIT_SAME(mp_drop<L2, mp_size_t<4>>, V2<5>);
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BOOST_TEST_TRAIT_SAME(mp_drop<L2, mp_size_t<5>>, V2<>);
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}
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using boost::mp11::mp_iota_c;
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using boost::mp11::mp_rename_v;
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{
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using L1 = mp_rename_v<mp_iota_c<171>, V1>;
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BOOST_TEST_TRAIT_SAME(mp_drop_c<L1, 169>, V1<std::size_t(169), std::size_t(170)>);
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BOOST_TEST_TRAIT_SAME(mp_drop_c<L1, 170>, V1<std::size_t(170)>);
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BOOST_TEST_TRAIT_SAME(mp_drop_c<L1, 171>, V1<>);
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}
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using boost::mp11::mp_valid;
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{
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BOOST_TEST_TRAIT_TRUE((mp_valid<mp_drop, V2<1, 2, 3>, mp_size_t<0>>));
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BOOST_TEST_TRAIT_TRUE((mp_valid<mp_drop, V2<1, 2, 3>, mp_size_t<1>>));
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BOOST_TEST_TRAIT_TRUE((mp_valid<mp_drop, V2<1, 2, 3>, mp_size_t<2>>));
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BOOST_TEST_TRAIT_TRUE((mp_valid<mp_drop, V2<1, 2, 3>, mp_size_t<3>>));
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BOOST_TEST_TRAIT_FALSE((mp_valid<mp_drop, V2<1, 2, 3>, mp_size_t<4>>));
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BOOST_TEST_TRAIT_FALSE((mp_valid<mp_drop, V2<1, 2, 3>, mp_size_t<5>>));
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}
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return boost::report_errors();
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}
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#endif
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