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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/bool.hpp>
- #include <boost/hana/equal.hpp>
- #include <boost/hana/fwd/hash.hpp>
- #include <boost/hana/integral_constant.hpp>
- #include <boost/hana/map.hpp>
- #include <boost/hana/type.hpp>
- #include <string>
- #include <type_traits>
- namespace hana = boost::hana;
- struct NoCopy {
- NoCopy() = default;
- NoCopy(NoCopy const&) = delete;
- friend auto operator==(NoCopy const&, NoCopy const&) { return hana::true_c; }
- friend auto operator!=(NoCopy const&, NoCopy const&) { return hana::false_c; }
- };
- // Note: It is also useful to check with a non-empty class, because that
- // triggers different instantiations due to EBO.
- struct NoCopy_nonempty {
- NoCopy_nonempty() = default;
- NoCopy_nonempty(NoCopy_nonempty const&) = delete;
- int i;
- friend auto operator==(NoCopy_nonempty const&, NoCopy_nonempty const&) { return hana::true_c; }
- friend auto operator!=(NoCopy_nonempty const&, NoCopy_nonempty const&) { return hana::false_c; }
- };
- namespace boost { namespace hana {
- template <>
- struct hash_impl<NoCopy> {
- static constexpr auto apply(NoCopy const&)
- { return hana::type_c<NoCopy>; };
- };
- template <>
- struct hash_impl<NoCopy_nonempty> {
- static constexpr auto apply(NoCopy_nonempty const&)
- { return hana::type_c<NoCopy_nonempty>; };
- };
- }}
- int main() {
- {
- auto t0 = hana::make_map();
- auto t_implicit = t0;
- auto t_explicit(t0);
- (void)t_explicit;
- (void)t_implicit;
- }
- {
- auto t0 = hana::make_map(hana::make_pair(hana::int_c<2>, hana::int_c<20>));
- auto t_implicit = t0;
- auto t_explicit(t0);
- (void)t_implicit;
- (void)t_explicit;
- }
- {
- auto t0 = hana::make_map(hana::make_pair(hana::int_c<2>, hana::int_c<20>),
- hana::make_pair(hana::int_c<3>, hana::int_c<30>));
- auto t_implicit = t0;
- auto t_explicit(t0);
- (void)t_implicit;
- (void)t_explicit;
- }
- {
- auto t0 = hana::make_map(hana::make_pair(hana::int_c<2>, hana::int_c<20>),
- hana::make_pair(hana::int_c<3>, hana::int_c<30>),
- hana::make_pair(hana::type_c<void>, hana::type_c<void*>));
- auto t_implicit = t0;
- auto t_explicit(t0);
- (void)t_implicit;
- (void)t_explicit;
- }
- {
- constexpr auto t0 = hana::make_map(
- hana::make_pair(hana::int_c<2>, hana::int_c<20>),
- hana::make_pair(hana::int_c<3>, hana::int_c<30>),
- hana::make_pair(hana::type_c<void>, hana::type_c<void*>));
- constexpr auto t_implicit = t0;
- constexpr auto t_explicit(t0);
- (void)t_implicit;
- (void)t_explicit;
- }
- {
- auto t0 = hana::make_map(hana::make_pair(hana::int_c<2>, std::string{"abcdef"}));
- auto copy = t0;
- BOOST_HANA_RUNTIME_CHECK(
- copy == hana::make_map(hana::make_pair(hana::int_c<2>, std::string{"abcdef"}))
- );
- }
- {
- using Map1 = hana::map<hana::pair<NoCopy, NoCopy>>;
- Map1 map1; (void)map1;
- static_assert(!std::is_copy_constructible<Map1>::value, "");
- using Map2 = hana::map<hana::pair<NoCopy_nonempty, NoCopy_nonempty>>;
- Map2 map2; (void)map2;
- static_assert(!std::is_copy_constructible<Map2>::value, "");
- }
- }
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