123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255 |
- /*=============================================================================
- Copyright (c) 2017 Paul Fultz II
- unpack.cpp
- Distributed under the Boost Software License, Version 1.0. (See accompanying
- file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
- ==============================================================================*/
- #include <boost/hof/unpack.hpp>
- #include <boost/hof/static.hpp>
- #include <boost/hof/lambda.hpp>
- #include "test.hpp"
- #include <memory>
- static constexpr boost::hof::static_<boost::hof::unpack_adaptor<unary_class> > unary_unpack = {};
- static constexpr boost::hof::static_<boost::hof::unpack_adaptor<binary_class> > binary_unpack = {};
- BOOST_HOF_STATIC_AUTO unary_unpack_constexpr = boost::hof::unpack_adaptor<unary_class>();
- #if BOOST_HOF_HAS_CONSTEXPR_TUPLE
- BOOST_HOF_STATIC_AUTO binary_unpack_constexpr = boost::hof::unpack_adaptor<binary_class>();
- #endif
- BOOST_HOF_STATIC_AUTO unary_unpack_reveal = boost::hof::reveal_adaptor<boost::hof::unpack_adaptor<unary_class>>();
- BOOST_HOF_STATIC_AUTO binary_unpack_reveal = boost::hof::reveal_adaptor<boost::hof::unpack_adaptor<binary_class>>();
- #if BOOST_HOF_HAS_NOEXCEPT_DEDUCTION
- BOOST_HOF_TEST_CASE()
- {
- static_assert(noexcept(boost::hof::unpack(unary_class())(boost::hof::pack(3))), "noexcept unpack");
- static_assert(noexcept(unary_unpack(boost::hof::pack(3))), "noexcept unpack");
- static_assert(noexcept(binary_unpack(boost::hof::pack(3), boost::hof::pack(2))), "noexcept unpack");
- }
- #endif
- BOOST_HOF_TEST_CASE()
- {
- BOOST_HOF_TEST_CHECK(3 == boost::hof::unpack(unary_class())(std::make_tuple(3)));
- BOOST_HOF_TEST_CHECK(3 == unary_unpack(std::make_tuple(3)));
- BOOST_HOF_TEST_CHECK(3 == unary_unpack_reveal(std::make_tuple(3)));
- int ifu = 3;
- BOOST_HOF_TEST_CHECK(3 == unary_unpack(std::tuple<int&>(ifu)));
- #if BOOST_HOF_HAS_CONSTEXPR_TUPLE
- BOOST_HOF_STATIC_TEST_CHECK(3 == boost::hof::unpack(unary_class())(std::make_tuple(3)));
- BOOST_HOF_STATIC_TEST_CHECK(3 == unary_unpack_constexpr(std::make_tuple(3)));
- BOOST_HOF_STATIC_TEST_CHECK(3 == unary_unpack_reveal(std::make_tuple(3)));
- #endif
- }
- BOOST_HOF_TEST_CASE()
- {
- BOOST_HOF_TEST_CHECK(3 == boost::hof::unpack(unary_class())(boost::hof::pack(3)));
- BOOST_HOF_TEST_CHECK(3 == unary_unpack(boost::hof::pack(3)));
- BOOST_HOF_TEST_CHECK(3 == unary_unpack_reveal(boost::hof::pack(3)));
- int ifu = 3;
- BOOST_HOF_TEST_CHECK(3 == unary_unpack(boost::hof::pack_forward(ifu)));
- BOOST_HOF_STATIC_TEST_CHECK(3 == boost::hof::unpack(unary_class())(boost::hof::pack(3)));
- BOOST_HOF_STATIC_TEST_CHECK(3 == unary_unpack_constexpr(boost::hof::pack(3)));
- BOOST_HOF_STATIC_TEST_CHECK(3 == unary_unpack_reveal(boost::hof::pack(3)));
- }
- BOOST_HOF_TEST_CASE()
- {
- BOOST_HOF_TEST_CHECK(3 == boost::hof::unpack(binary_class())(std::make_tuple(1, 2)));
- BOOST_HOF_TEST_CHECK(3 == binary_unpack(std::make_tuple(1, 2)));
- BOOST_HOF_TEST_CHECK(3 == binary_unpack_reveal(std::make_tuple(1, 2)));
- BOOST_HOF_TEST_CHECK(3 == boost::hof::unpack(binary_class())(std::make_tuple(1), std::make_tuple(2)));
- BOOST_HOF_TEST_CHECK(3 == binary_unpack(std::make_tuple(1), std::make_tuple(2)));
- BOOST_HOF_TEST_CHECK(3 == binary_unpack_reveal(std::make_tuple(1), std::make_tuple(2)));
- BOOST_HOF_TEST_CHECK(3 == boost::hof::unpack(binary_class())(std::make_tuple(1), std::make_tuple(), std::make_tuple(2)));
- BOOST_HOF_TEST_CHECK(3 == binary_unpack(std::make_tuple(1), std::make_tuple(), std::make_tuple(2)));
- BOOST_HOF_TEST_CHECK(3 == binary_unpack_reveal(std::make_tuple(1), std::make_tuple(), std::make_tuple(2)));
- BOOST_HOF_TEST_CHECK(3 == boost::hof::unpack(binary_class())(std::make_tuple(), std::make_tuple(1), std::make_tuple(), std::make_tuple(2)));
- BOOST_HOF_TEST_CHECK(3 == binary_unpack(std::make_tuple(), std::make_tuple(1), std::make_tuple(), std::make_tuple(2)));
- BOOST_HOF_TEST_CHECK(3 == binary_unpack_reveal(std::make_tuple(), std::make_tuple(1), std::make_tuple(), std::make_tuple(2)));
- BOOST_HOF_TEST_CHECK(3 == boost::hof::unpack(binary_class())(std::make_tuple(1), std::make_tuple(), std::make_tuple(2), std::make_tuple()));
- BOOST_HOF_TEST_CHECK(3 == binary_unpack(std::make_tuple(1), std::make_tuple(), std::make_tuple(2), std::make_tuple()));
- BOOST_HOF_TEST_CHECK(3 == binary_unpack_reveal(std::make_tuple(1), std::make_tuple(), std::make_tuple(2), std::make_tuple()));
- #if BOOST_HOF_HAS_CONSTEXPR_TUPLE
- BOOST_HOF_STATIC_TEST_CHECK(3 == boost::hof::unpack(binary_class())(std::make_tuple(1, 2)));
- BOOST_HOF_STATIC_TEST_CHECK(3 == binary_unpack_constexpr(std::make_tuple(1, 2)));
- BOOST_HOF_STATIC_TEST_CHECK(3 == binary_unpack_reveal(std::make_tuple(1, 2)));
- BOOST_HOF_STATIC_TEST_CHECK(3 == boost::hof::unpack(binary_class())(std::make_tuple(1), std::make_tuple(2)));
- BOOST_HOF_STATIC_TEST_CHECK(3 == binary_unpack_constexpr(std::make_tuple(1), std::make_tuple(2)));
- BOOST_HOF_STATIC_TEST_CHECK(3 == binary_unpack_reveal(std::make_tuple(1), std::make_tuple(2)));
- BOOST_HOF_STATIC_TEST_CHECK(3 == boost::hof::unpack(binary_class())(std::make_tuple(1), std::make_tuple(), std::make_tuple(2)));
- BOOST_HOF_STATIC_TEST_CHECK(3 == binary_unpack_constexpr(std::make_tuple(1), std::make_tuple(), std::make_tuple(2)));
- BOOST_HOF_STATIC_TEST_CHECK(3 == binary_unpack_reveal(std::make_tuple(1), std::make_tuple(), std::make_tuple(2)));
- BOOST_HOF_STATIC_TEST_CHECK(3 == boost::hof::unpack(binary_class())(std::make_tuple(), std::make_tuple(1), std::make_tuple(), std::make_tuple(2)));
- BOOST_HOF_STATIC_TEST_CHECK(3 == binary_unpack_constexpr(std::make_tuple(), std::make_tuple(1), std::make_tuple(), std::make_tuple(2)));
- BOOST_HOF_STATIC_TEST_CHECK(3 == binary_unpack_reveal(std::make_tuple(), std::make_tuple(1), std::make_tuple(), std::make_tuple(2)));
- BOOST_HOF_STATIC_TEST_CHECK(3 == boost::hof::unpack(binary_class())(std::make_tuple(1), std::make_tuple(), std::make_tuple(2), std::make_tuple()));
- BOOST_HOF_STATIC_TEST_CHECK(3 == binary_unpack_constexpr(std::make_tuple(1), std::make_tuple(), std::make_tuple(2), std::make_tuple()));
- BOOST_HOF_STATIC_TEST_CHECK(3 == binary_unpack_reveal(std::make_tuple(1), std::make_tuple(), std::make_tuple(2), std::make_tuple()));
- #endif
- }
- BOOST_HOF_TEST_CASE()
- {
- auto p1 = boost::hof::pack_basic(1, 2);
- static_assert(boost::hof::is_unpackable<decltype(p1)>::value, "Not unpackable");
- static_assert(boost::hof::is_unpackable<decltype((p1))>::value, "Not unpackable");
- auto p2 = boost::hof::pack_forward(1, 2);
- static_assert(boost::hof::is_unpackable<decltype(p2)>::value, "Not unpackable");
- static_assert(boost::hof::is_unpackable<decltype((p2))>::value, "Not unpackable");
- auto p3 = boost::hof::pack(1, 2);
- static_assert(boost::hof::is_unpackable<decltype(p3)>::value, "Not unpackable");
- static_assert(boost::hof::is_unpackable<decltype((p3))>::value, "Not unpackable");
- static_assert(boost::hof::is_unpackable<std::tuple<int>>::value, "Not unpackable");
-
- static_assert(!boost::hof::is_unpackable<int>::value, "Unpackable");
- static_assert(!boost::hof::is_unpackable<void>::value, "Unpackable");
- }
- BOOST_HOF_TEST_CASE()
- {
- typedef std::tuple<int, int> tuple_type;
- static_assert(boost::hof::is_unpackable<tuple_type>::value, "Not unpackable");
- static_assert(boost::hof::is_unpackable<tuple_type&>::value, "Not unpackable");
- static_assert(boost::hof::is_unpackable<const tuple_type&>::value, "Not unpackable");
- static_assert(boost::hof::is_unpackable<tuple_type&&>::value, "Not unpackable");
-
- }
- BOOST_HOF_STATIC_AUTO lambda_unary_unpack = boost::hof::unpack(BOOST_HOF_STATIC_LAMBDA(int x)
- {
- return x;
- });
- BOOST_HOF_TEST_CASE()
- {
- BOOST_HOF_TEST_CHECK(3 == lambda_unary_unpack(std::make_tuple(3)));
- }
- BOOST_HOF_TEST_CASE()
- {
- BOOST_HOF_TEST_CHECK(3 == lambda_unary_unpack(boost::hof::pack(3)));
- }
- struct unary_move
- {
- std::unique_ptr<int> i;
- unary_move()
- : i(new int(2))
- {}
- template<class T>
- T operator()(T x) const
- {
- return x + *i;
- }
- };
- static constexpr boost::hof::static_<boost::hof::unpack_adaptor<unary_move> > unary_move_unpack = {};
- BOOST_HOF_TEST_CASE()
- {
- BOOST_HOF_TEST_CHECK(3 == boost::hof::unpack(unary_move())(std::make_tuple(1)));
- BOOST_HOF_TEST_CHECK(3 == unary_move_unpack(std::make_tuple(1)));
- }
- BOOST_HOF_TEST_CASE()
- {
- BOOST_HOF_TEST_CHECK(3 == boost::hof::unpack(unary_move())(boost::hof::pack(1)));
- BOOST_HOF_TEST_CHECK(3 == unary_move_unpack(boost::hof::pack(1)));
- }
- struct indirect_sum_f
- {
- template<class T, class U>
- auto operator()(T x, U y) const
- BOOST_HOF_RETURNS(*x + *y);
- };
- #define MAKE_UNIQUE_PTR(x) std::unique_ptr<int>(new int(x))
- BOOST_HOF_TEST_CASE()
- {
- BOOST_HOF_TEST_CHECK(3 == boost::hof::unpack(indirect_sum_f())(boost::hof::pack_basic(MAKE_UNIQUE_PTR(1), MAKE_UNIQUE_PTR(2))));
- BOOST_HOF_TEST_CHECK(3 == boost::hof::unpack(indirect_sum_f())(boost::hof::pack_forward(MAKE_UNIQUE_PTR(1), MAKE_UNIQUE_PTR(2))));
- BOOST_HOF_TEST_CHECK(3 == boost::hof::unpack(indirect_sum_f())(boost::hof::pack(MAKE_UNIQUE_PTR(1), MAKE_UNIQUE_PTR(2))));
- BOOST_HOF_TEST_CHECK(3 == boost::hof::unpack(indirect_sum_f())(std::make_tuple(MAKE_UNIQUE_PTR(1), MAKE_UNIQUE_PTR(2))));
- }
- template<class...>
- struct deduce_types
- {};
- struct deducer
- {
- template<class... Ts>
- deduce_types<Ts...> operator()(Ts&&...) const;
- };
- static constexpr boost::hof::unpack_adaptor<deducer> deduce = {};
- BOOST_HOF_TEST_CASE()
- {
- STATIC_ASSERT_SAME(deduce_types<int, int>, decltype(deduce(std::make_tuple(1, 2))));
- STATIC_ASSERT_SAME(deduce_types<int, int>, decltype(deduce(std::make_tuple(1), std::make_tuple(2))));
- STATIC_ASSERT_SAME(deduce_types<int, int, int>, decltype(deduce(std::make_tuple(1), std::make_tuple(2), std::make_tuple(3))));
- STATIC_ASSERT_SAME(std::tuple<int&&, int&&>, decltype(std::forward_as_tuple(1, 2)));
- // Disable this test, it seems that rvalue references get swalllowed by type deduction
- // STATIC_ASSERT_SAME(deduce_types<int&&, int&&>, decltype(deduce(std::forward_as_tuple(1, 2))));
- STATIC_ASSERT_SAME(deduce_types<int, int>, decltype(deduce(boost::hof::pack_basic(1, 2))));
- STATIC_ASSERT_SAME(deduce_types<int, int>, decltype(deduce(boost::hof::pack_basic(1), boost::hof::pack_basic(2))));
- STATIC_ASSERT_SAME(deduce_types<int, int, int>, decltype(deduce(boost::hof::pack_basic(1), boost::hof::pack_basic(2), boost::hof::pack_basic(3))));
- // STATIC_ASSERT_SAME(deduce_types<int&&, int&&>, decltype(deduce(boost::hof::pack_forward(1, 2))));
- }
- struct not_unpackable
- {};
- BOOST_HOF_TEST_CASE()
- {
- auto f = boost::hof::unpack(boost::hof::always(1));
- static_assert(!boost::hof::is_invocable<decltype(f), not_unpackable>::value, "SFINAE for unpack failed");
- }
- struct simple_unpackable
- {};
- namespace boost { namespace hof {
- template<>
- struct unpack_sequence<simple_unpackable>
- {
- template<class F, class S>
- constexpr static auto apply(F&& f, S&&) BOOST_HOF_RETURNS
- (
- f(1)
- );
- };
- }} // namespace boost::hof
- BOOST_HOF_TEST_CASE()
- {
- BOOST_HOF_TEST_CHECK(boost::hof::unpack(boost::hof::identity)(simple_unpackable{}) == 1);
- BOOST_HOF_STATIC_TEST_CHECK(boost::hof::unpack(boost::hof::identity)(simple_unpackable{}) == 1);
- }
|