1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768 |
- // 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/config.hpp>
- #include <boost/hana/core/to.hpp>
- #include <boost/hana/equal.hpp>
- #include <boost/hana/find.hpp>
- #include <boost/hana/functional/id.hpp>
- #include <boost/hana/fwd/accessors.hpp>
- #include <boost/hana/integral_constant.hpp>
- #include <boost/hana/not_equal.hpp>
- #include <boost/hana/pair.hpp>
- #include <boost/hana/string.hpp>
- #include <boost/hana/tuple.hpp>
- #include <string>
- #include <utility>
- namespace hana = boost::hana;
- //! [main]
- struct Person {
- Person(std::string const& name, int age) : name_(name), age_(age) { }
- std::string const& get_name() const { return name_; }
- int get_age() const { return age_; }
- private:
- std::string name_;
- int age_;
- };
- namespace boost { namespace hana {
- template <>
- struct accessors_impl<Person> {
- static BOOST_HANA_CONSTEXPR_LAMBDA auto apply() {
- return make_tuple(
- make_pair(BOOST_HANA_STRING("name"), [](auto&& p) -> std::string const& {
- return p.get_name();
- }),
- make_pair(BOOST_HANA_STRING("age"), [](auto&& p) {
- return p.get_age();
- })
- );
- }
- };
- }}
- //! [main]
- int main() {
- auto name = BOOST_HANA_STRING("name");
- auto age = BOOST_HANA_STRING("age");
- Person john{"John", 30}, bob{"Bob", 40};
- BOOST_HANA_RUNTIME_CHECK(hana::equal(john, john));
- BOOST_HANA_RUNTIME_CHECK(hana::not_equal(john, bob));
- BOOST_HANA_RUNTIME_CHECK(hana::find(john, name) == hana::just("John"));
- BOOST_HANA_RUNTIME_CHECK(hana::find(john, age) == hana::just(30));
- BOOST_HANA_CONSTANT_CHECK(hana::find(john, BOOST_HANA_STRING("foo")) == hana::nothing);
- BOOST_HANA_RUNTIME_CHECK(hana::to_tuple(john) == hana::make_tuple(
- hana::make_pair(name, "John"),
- hana::make_pair(age, 30)
- ));
- }
|