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58 lines
1.9 KiB
C++
58 lines
1.9 KiB
C++
/*
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@copyright Louis Dionne 2015
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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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*/
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#include <boost/hana/accessors.hpp>
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#include <boost/hana/assert.hpp>
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#include <boost/hana/core/convert.hpp>
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#include <boost/hana/define_struct.hpp>
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#include <boost/hana/equal.hpp>
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#include <boost/hana/find.hpp>
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#include <boost/hana/first.hpp>
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#include <boost/hana/map.hpp>
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#include <boost/hana/not_equal.hpp>
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#include <boost/hana/optional.hpp>
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#include <boost/hana/pair.hpp>
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#include <boost/hana/string.hpp>
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#include <boost/hana/transform.hpp>
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#include <boost/hana/tuple.hpp>
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#include <string>
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namespace hana = boost::hana;
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struct Person {
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BOOST_HANA_DEFINE_STRUCT(Person,
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(std::string, name),
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(int, age)
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);
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};
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// The member names are hana::strings:
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auto names = hana::transform(hana::accessors<Person>(), hana::first);
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BOOST_HANA_CONSTANT_CHECK(
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names == hana::make_tuple(BOOST_HANA_STRING("name"), BOOST_HANA_STRING("age"))
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);
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int main() {
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Person john{"John", 30}, bob{"Bob", 40};
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BOOST_HANA_RUNTIME_CHECK(hana::equal(john, john));
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BOOST_HANA_RUNTIME_CHECK(hana::not_equal(john, bob));
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BOOST_HANA_RUNTIME_CHECK(hana::find(john, BOOST_HANA_STRING("name")) == hana::just("John"));
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BOOST_HANA_RUNTIME_CHECK(hana::find(john, BOOST_HANA_STRING("age")) == hana::just(30));
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BOOST_HANA_CONSTANT_CHECK(hana::find(john, BOOST_HANA_STRING("foo")) == hana::nothing);
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BOOST_HANA_RUNTIME_CHECK(hana::to<hana::tuple_tag>(john) == hana::make_tuple(
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hana::make_pair(BOOST_HANA_STRING("name"), "John"),
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hana::make_pair(BOOST_HANA_STRING("age"), 30)
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));
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BOOST_HANA_RUNTIME_CHECK(hana::to<hana::map_tag>(john) == hana::make_map(
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hana::make_pair(BOOST_HANA_STRING("name"), "John"),
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hana::make_pair(BOOST_HANA_STRING("age"), 30)
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));
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}
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