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Diffstat (limited to 'src/boost/libs/hana/test/functional/demux.cpp')
-rw-r--r-- | src/boost/libs/hana/test/functional/demux.cpp | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/src/boost/libs/hana/test/functional/demux.cpp b/src/boost/libs/hana/test/functional/demux.cpp new file mode 100644 index 000000000..07285bce5 --- /dev/null +++ b/src/boost/libs/hana/test/functional/demux.cpp @@ -0,0 +1,64 @@ +// 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/equal.hpp> +#include <boost/hana/functional/demux.hpp> + +#include <laws/base.hpp> +namespace hana = boost::hana; +using hana::test::ct_eq; + + +struct MoveOnly { + MoveOnly() = default; + MoveOnly(MoveOnly const&) = delete; + MoveOnly(MoveOnly&&) = default; +}; + +int main() { + hana::test::_injection<0> f{}; + hana::test::_injection<1> g{}; + hana::test::_injection<2> h{}; + + BOOST_HANA_CONSTANT_CHECK(hana::equal( + hana::demux(f)()(), + f() + )); + + BOOST_HANA_CONSTANT_CHECK(hana::equal( + hana::demux(f)(g)(ct_eq<1>{}), + f(g(ct_eq<1>{})) + )); + BOOST_HANA_CONSTANT_CHECK(hana::equal( + hana::demux(f)(g)(ct_eq<1>{}, ct_eq<2>{}), + f(g(ct_eq<1>{}, ct_eq<2>{})) + )); + BOOST_HANA_CONSTANT_CHECK(hana::equal( + hana::demux(f)(g)(ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{}), + f(g(ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{})) + )); + + BOOST_HANA_CONSTANT_CHECK(hana::equal( + hana::demux(f)(g, h)(ct_eq<1>{}), + f(g(ct_eq<1>{}), h(ct_eq<1>{})) + )); + BOOST_HANA_CONSTANT_CHECK(hana::equal( + hana::demux(f)(g, h)(ct_eq<1>{}, ct_eq<2>{}), + f(g(ct_eq<1>{}, ct_eq<2>{}), h(ct_eq<1>{}, ct_eq<2>{})) + )); + BOOST_HANA_CONSTANT_CHECK(hana::equal( + hana::demux(f)(g, h)(ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{}), + f(g(ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{}), h(ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{})) + )); + + // Make sure we can pass move-only types when a single function + // is demux'ed. In other words, make sure the arguments are + // perfect-forwarded when a single function is demux'ed. + { + hana::demux(f)(g)(MoveOnly{}); + hana::demux(f)(g)(MoveOnly{}, MoveOnly{}); + hana::demux(f)(g)(MoveOnly{}, MoveOnly{}, MoveOnly{}); + } +} |