62 lines
2.2 KiB
C++
62 lines
2.2 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/adapt_adt.hpp>
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#include <boost/hana/assert.hpp>
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#include <boost/hana/concept/struct.hpp>
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#include <boost/hana/contains.hpp>
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#include <boost/hana/string.hpp>
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#include <laws/base.hpp>
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namespace hana = boost::hana;
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using hana::test::ct_eq;
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namespace ns {
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struct Data0 { };
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struct Data1 {
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ct_eq<1> get_member1() const { return {}; }
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};
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struct Data2 {
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ct_eq<1> get_member1() const { return {}; }
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ct_eq<2> get_member2() const { return {}; }
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};
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struct Data3 {
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ct_eq<1> get_member1() const { return {}; }
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ct_eq<2> get_member2() const { return {}; }
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ct_eq<3> get_member3() const { return {}; }
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};
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}
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// Note: We use commas in the lambdas to make sure the macro can handle it.
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BOOST_HANA_ADAPT_ADT(ns::Data0);
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BOOST_HANA_ADAPT_ADT(ns::Data1,
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(member1, [](auto const& d) { return 0, d.get_member1(); })
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);
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BOOST_HANA_ADAPT_ADT(ns::Data2,
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(member1, [](auto const& d) { return 0, d.get_member1(); }),
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(member2, [](auto const& d) { return d.get_member2(); })
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);
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BOOST_HANA_ADAPT_ADT(ns::Data3,
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(member1, [](auto const& d) { return 0, d.get_member1(); }),
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(member2, [](auto const& d) { return d.get_member2(); }),
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(member3, [](auto const& d) { return d.get_member3(); })
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);
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static_assert(hana::Struct<ns::Data0>::value, "");
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static_assert(hana::Struct<ns::Data1>::value, "");
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static_assert(hana::Struct<ns::Data2>::value, "");
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static_assert(hana::Struct<ns::Data3>::value, "");
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int main() {
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BOOST_HANA_CONSTANT_CHECK(hana::contains(ns::Data1{}, BOOST_HANA_STRING("member1")));
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BOOST_HANA_CONSTANT_CHECK(hana::contains(ns::Data2{}, BOOST_HANA_STRING("member1")));
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BOOST_HANA_CONSTANT_CHECK(hana::contains(ns::Data2{}, BOOST_HANA_STRING("member2")));
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BOOST_HANA_CONSTANT_CHECK(hana::contains(ns::Data3{}, BOOST_HANA_STRING("member1")));
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BOOST_HANA_CONSTANT_CHECK(hana::contains(ns::Data3{}, BOOST_HANA_STRING("member2")));
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BOOST_HANA_CONSTANT_CHECK(hana::contains(ns::Data3{}, BOOST_HANA_STRING("member3")));
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}
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