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244 lines
11 KiB
C++
244 lines
11 KiB
C++
#include <boost/fit/unpack.hpp>
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#include <boost/fit/static.hpp>
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#include <boost/fit/lambda.hpp>
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#include "test.hpp"
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#include <memory>
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static constexpr boost::fit::static_<boost::fit::unpack_adaptor<unary_class> > unary_unpack = {};
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static constexpr boost::fit::static_<boost::fit::unpack_adaptor<binary_class> > binary_unpack = {};
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BOOST_FIT_STATIC_AUTO unary_unpack_constexpr = boost::fit::unpack_adaptor<unary_class>();
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BOOST_FIT_STATIC_AUTO binary_unpack_constexpr = boost::fit::unpack_adaptor<binary_class>();
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BOOST_FIT_STATIC_AUTO unary_unpack_reveal = boost::fit::reveal_adaptor<boost::fit::unpack_adaptor<unary_class>>();
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BOOST_FIT_STATIC_AUTO binary_unpack_reveal = boost::fit::reveal_adaptor<boost::fit::unpack_adaptor<binary_class>>();
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#if BOOST_FIT_HAS_NOEXCEPT_DEDUCTION
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BOOST_FIT_TEST_CASE()
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{
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static_assert(noexcept(boost::fit::unpack(unary_class())(boost::fit::pack(3))), "noexcept unpack");
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static_assert(noexcept(unary_unpack(boost::fit::pack(3))), "noexcept unpack");
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static_assert(noexcept(binary_unpack(boost::fit::pack(3), boost::fit::pack(2))), "noexcept unpack");
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}
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#endif
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BOOST_FIT_TEST_CASE()
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{
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BOOST_FIT_TEST_CHECK(3 == boost::fit::unpack(unary_class())(std::make_tuple(3)));
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BOOST_FIT_TEST_CHECK(3 == unary_unpack(std::make_tuple(3)));
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BOOST_FIT_TEST_CHECK(3 == unary_unpack_reveal(std::make_tuple(3)));
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int ifu = 3;
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BOOST_FIT_TEST_CHECK(3 == unary_unpack(std::tuple<int&>(ifu)));
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BOOST_FIT_STATIC_TEST_CHECK(3 == boost::fit::unpack(unary_class())(std::make_tuple(3)));
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BOOST_FIT_STATIC_TEST_CHECK(3 == unary_unpack_constexpr(std::make_tuple(3)));
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BOOST_FIT_STATIC_TEST_CHECK(3 == unary_unpack_reveal(std::make_tuple(3)));
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}
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BOOST_FIT_TEST_CASE()
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{
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BOOST_FIT_TEST_CHECK(3 == boost::fit::unpack(unary_class())(boost::fit::pack(3)));
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BOOST_FIT_TEST_CHECK(3 == unary_unpack(boost::fit::pack(3)));
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BOOST_FIT_TEST_CHECK(3 == unary_unpack_reveal(boost::fit::pack(3)));
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int ifu = 3;
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BOOST_FIT_TEST_CHECK(3 == unary_unpack(boost::fit::pack_forward(ifu)));
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BOOST_FIT_STATIC_TEST_CHECK(3 == boost::fit::unpack(unary_class())(boost::fit::pack(3)));
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BOOST_FIT_STATIC_TEST_CHECK(3 == unary_unpack_constexpr(boost::fit::pack(3)));
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BOOST_FIT_STATIC_TEST_CHECK(3 == unary_unpack_reveal(boost::fit::pack(3)));
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}
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BOOST_FIT_TEST_CASE()
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{
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BOOST_FIT_TEST_CHECK(3 == boost::fit::unpack(binary_class())(std::make_tuple(1, 2)));
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BOOST_FIT_TEST_CHECK(3 == binary_unpack(std::make_tuple(1, 2)));
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BOOST_FIT_TEST_CHECK(3 == binary_unpack_reveal(std::make_tuple(1, 2)));
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BOOST_FIT_TEST_CHECK(3 == boost::fit::unpack(binary_class())(std::make_tuple(1), std::make_tuple(2)));
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BOOST_FIT_TEST_CHECK(3 == binary_unpack(std::make_tuple(1), std::make_tuple(2)));
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BOOST_FIT_TEST_CHECK(3 == binary_unpack_reveal(std::make_tuple(1), std::make_tuple(2)));
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BOOST_FIT_TEST_CHECK(3 == boost::fit::unpack(binary_class())(std::make_tuple(1), std::make_tuple(), std::make_tuple(2)));
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BOOST_FIT_TEST_CHECK(3 == binary_unpack(std::make_tuple(1), std::make_tuple(), std::make_tuple(2)));
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BOOST_FIT_TEST_CHECK(3 == binary_unpack_reveal(std::make_tuple(1), std::make_tuple(), std::make_tuple(2)));
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BOOST_FIT_TEST_CHECK(3 == boost::fit::unpack(binary_class())(std::make_tuple(), std::make_tuple(1), std::make_tuple(), std::make_tuple(2)));
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BOOST_FIT_TEST_CHECK(3 == binary_unpack(std::make_tuple(), std::make_tuple(1), std::make_tuple(), std::make_tuple(2)));
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BOOST_FIT_TEST_CHECK(3 == binary_unpack_reveal(std::make_tuple(), std::make_tuple(1), std::make_tuple(), std::make_tuple(2)));
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BOOST_FIT_TEST_CHECK(3 == boost::fit::unpack(binary_class())(std::make_tuple(1), std::make_tuple(), std::make_tuple(2), std::make_tuple()));
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BOOST_FIT_TEST_CHECK(3 == binary_unpack(std::make_tuple(1), std::make_tuple(), std::make_tuple(2), std::make_tuple()));
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BOOST_FIT_TEST_CHECK(3 == binary_unpack_reveal(std::make_tuple(1), std::make_tuple(), std::make_tuple(2), std::make_tuple()));
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BOOST_FIT_STATIC_TEST_CHECK(3 == boost::fit::unpack(binary_class())(std::make_tuple(1, 2)));
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BOOST_FIT_STATIC_TEST_CHECK(3 == binary_unpack_constexpr(std::make_tuple(1, 2)));
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BOOST_FIT_STATIC_TEST_CHECK(3 == binary_unpack_reveal(std::make_tuple(1, 2)));
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BOOST_FIT_STATIC_TEST_CHECK(3 == boost::fit::unpack(binary_class())(std::make_tuple(1), std::make_tuple(2)));
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BOOST_FIT_STATIC_TEST_CHECK(3 == binary_unpack_constexpr(std::make_tuple(1), std::make_tuple(2)));
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BOOST_FIT_STATIC_TEST_CHECK(3 == binary_unpack_reveal(std::make_tuple(1), std::make_tuple(2)));
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BOOST_FIT_STATIC_TEST_CHECK(3 == boost::fit::unpack(binary_class())(std::make_tuple(1), std::make_tuple(), std::make_tuple(2)));
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BOOST_FIT_STATIC_TEST_CHECK(3 == binary_unpack_constexpr(std::make_tuple(1), std::make_tuple(), std::make_tuple(2)));
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BOOST_FIT_STATIC_TEST_CHECK(3 == binary_unpack_reveal(std::make_tuple(1), std::make_tuple(), std::make_tuple(2)));
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BOOST_FIT_STATIC_TEST_CHECK(3 == boost::fit::unpack(binary_class())(std::make_tuple(), std::make_tuple(1), std::make_tuple(), std::make_tuple(2)));
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BOOST_FIT_STATIC_TEST_CHECK(3 == binary_unpack_constexpr(std::make_tuple(), std::make_tuple(1), std::make_tuple(), std::make_tuple(2)));
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BOOST_FIT_STATIC_TEST_CHECK(3 == binary_unpack_reveal(std::make_tuple(), std::make_tuple(1), std::make_tuple(), std::make_tuple(2)));
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BOOST_FIT_STATIC_TEST_CHECK(3 == boost::fit::unpack(binary_class())(std::make_tuple(1), std::make_tuple(), std::make_tuple(2), std::make_tuple()));
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BOOST_FIT_STATIC_TEST_CHECK(3 == binary_unpack_constexpr(std::make_tuple(1), std::make_tuple(), std::make_tuple(2), std::make_tuple()));
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BOOST_FIT_STATIC_TEST_CHECK(3 == binary_unpack_reveal(std::make_tuple(1), std::make_tuple(), std::make_tuple(2), std::make_tuple()));
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}
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BOOST_FIT_TEST_CASE()
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{
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auto p1 = boost::fit::pack_basic(1, 2);
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static_assert(boost::fit::is_unpackable<decltype(p1)>::value, "Not unpackable");
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static_assert(boost::fit::is_unpackable<decltype((p1))>::value, "Not unpackable");
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auto p2 = boost::fit::pack_forward(1, 2);
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static_assert(boost::fit::is_unpackable<decltype(p2)>::value, "Not unpackable");
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static_assert(boost::fit::is_unpackable<decltype((p2))>::value, "Not unpackable");
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auto p3 = boost::fit::pack(1, 2);
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static_assert(boost::fit::is_unpackable<decltype(p3)>::value, "Not unpackable");
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static_assert(boost::fit::is_unpackable<decltype((p3))>::value, "Not unpackable");
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static_assert(boost::fit::is_unpackable<std::tuple<int>>::value, "Not unpackable");
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static_assert(!boost::fit::is_unpackable<int>::value, "Unpackable");
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static_assert(!boost::fit::is_unpackable<void>::value, "Unpackable");
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}
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BOOST_FIT_TEST_CASE()
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{
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typedef std::tuple<int, int> tuple_type;
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static_assert(boost::fit::is_unpackable<tuple_type>::value, "Not unpackable");
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static_assert(boost::fit::is_unpackable<tuple_type&>::value, "Not unpackable");
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static_assert(boost::fit::is_unpackable<const tuple_type&>::value, "Not unpackable");
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static_assert(boost::fit::is_unpackable<tuple_type&&>::value, "Not unpackable");
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}
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BOOST_FIT_STATIC_AUTO lambda_unary_unpack = boost::fit::unpack(BOOST_FIT_STATIC_LAMBDA(int x)
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{
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return x;
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});
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BOOST_FIT_TEST_CASE()
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{
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BOOST_FIT_TEST_CHECK(3 == lambda_unary_unpack(std::make_tuple(3)));
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}
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BOOST_FIT_TEST_CASE()
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{
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BOOST_FIT_TEST_CHECK(3 == lambda_unary_unpack(boost::fit::pack(3)));
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}
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struct unary_move
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{
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std::unique_ptr<int> i;
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unary_move()
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: i(new int(2))
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{}
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template<class T>
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T operator()(T x) const
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{
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return x + *i;
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}
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};
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static constexpr boost::fit::static_<boost::fit::unpack_adaptor<unary_move> > unary_move_unpack = {};
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BOOST_FIT_TEST_CASE()
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{
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BOOST_FIT_TEST_CHECK(3 == boost::fit::unpack(unary_move())(std::make_tuple(1)));
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BOOST_FIT_TEST_CHECK(3 == unary_move_unpack(std::make_tuple(1)));
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}
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BOOST_FIT_TEST_CASE()
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{
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BOOST_FIT_TEST_CHECK(3 == boost::fit::unpack(unary_move())(boost::fit::pack(1)));
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BOOST_FIT_TEST_CHECK(3 == unary_move_unpack(boost::fit::pack(1)));
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}
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struct indirect_sum_f
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{
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template<class T, class U>
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auto operator()(T x, U y) const
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BOOST_FIT_RETURNS(*x + *y);
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};
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#define MAKE_UNIQUE_PTR(x) std::unique_ptr<int>(new int(x))
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BOOST_FIT_TEST_CASE()
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{
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BOOST_FIT_TEST_CHECK(3 == boost::fit::unpack(indirect_sum_f())(boost::fit::pack_basic(MAKE_UNIQUE_PTR(1), MAKE_UNIQUE_PTR(2))));
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BOOST_FIT_TEST_CHECK(3 == boost::fit::unpack(indirect_sum_f())(boost::fit::pack_forward(MAKE_UNIQUE_PTR(1), MAKE_UNIQUE_PTR(2))));
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BOOST_FIT_TEST_CHECK(3 == boost::fit::unpack(indirect_sum_f())(boost::fit::pack(MAKE_UNIQUE_PTR(1), MAKE_UNIQUE_PTR(2))));
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BOOST_FIT_TEST_CHECK(3 == boost::fit::unpack(indirect_sum_f())(std::make_tuple(MAKE_UNIQUE_PTR(1), MAKE_UNIQUE_PTR(2))));
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}
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template<class...>
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struct deduce_types
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{};
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struct deducer
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{
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template<class... Ts>
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deduce_types<Ts...> operator()(Ts&&...) const;
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};
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static constexpr boost::fit::unpack_adaptor<deducer> deduce = {};
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BOOST_FIT_TEST_CASE()
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{
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STATIC_ASSERT_SAME(deduce_types<int, int>, decltype(deduce(std::make_tuple(1, 2))));
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STATIC_ASSERT_SAME(deduce_types<int, int>, decltype(deduce(std::make_tuple(1), std::make_tuple(2))));
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STATIC_ASSERT_SAME(deduce_types<int, int, int>, decltype(deduce(std::make_tuple(1), std::make_tuple(2), std::make_tuple(3))));
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STATIC_ASSERT_SAME(std::tuple<int&&, int&&>, decltype(std::forward_as_tuple(1, 2)));
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// Disable this test, it seems that rvalue references get swalllowed by type deduction
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// STATIC_ASSERT_SAME(deduce_types<int&&, int&&>, decltype(deduce(std::forward_as_tuple(1, 2))));
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STATIC_ASSERT_SAME(deduce_types<int, int>, decltype(deduce(boost::fit::pack_basic(1, 2))));
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STATIC_ASSERT_SAME(deduce_types<int, int>, decltype(deduce(boost::fit::pack_basic(1), boost::fit::pack_basic(2))));
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STATIC_ASSERT_SAME(deduce_types<int, int, int>, decltype(deduce(boost::fit::pack_basic(1), boost::fit::pack_basic(2), boost::fit::pack_basic(3))));
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// STATIC_ASSERT_SAME(deduce_types<int&&, int&&>, decltype(deduce(boost::fit::pack_forward(1, 2))));
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}
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struct not_unpackable
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{};
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BOOST_FIT_TEST_CASE()
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{
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auto f = boost::fit::unpack(boost::fit::always(1));
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static_assert(!boost::fit::is_callable<decltype(f), not_unpackable>::value, "SFINAE for unpack failed");
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}
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struct simple_unpackable
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{};
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namespace boost { namespace fit {
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template<>
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struct unpack_sequence<simple_unpackable>
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{
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template<class F, class S>
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constexpr static auto apply(F&& f, S&&) BOOST_FIT_RETURNS
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(
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f(1)
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);
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};
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}} // namespace boost::fit
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BOOST_FIT_TEST_CASE()
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{
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BOOST_FIT_TEST_CHECK(boost::fit::unpack(boost::fit::identity)(simple_unpackable{}) == 1);
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BOOST_FIT_STATIC_TEST_CHECK(boost::fit::unpack(boost::fit::identity)(simple_unpackable{}) == 1);
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}
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