diff options
Diffstat (limited to 'src/boost/libs/hana/test/tuple/move_only.cpp')
-rw-r--r-- | src/boost/libs/hana/test/tuple/move_only.cpp | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/src/boost/libs/hana/test/tuple/move_only.cpp b/src/boost/libs/hana/test/tuple/move_only.cpp new file mode 100644 index 000000000..3f78316cc --- /dev/null +++ b/src/boost/libs/hana/test/tuple/move_only.cpp @@ -0,0 +1,55 @@ +// 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/at.hpp> +#include <boost/hana/back.hpp> +#include <boost/hana/front.hpp> +#include <boost/hana/tuple.hpp> + +#include <utility> +namespace hana = boost::hana; + + +// This test checks for move-only friendliness and reference semantics. + +struct MoveOnly { + MoveOnly() = default; + MoveOnly(MoveOnly&&) = default; + MoveOnly& operator=(MoveOnly&&) = default; + + MoveOnly(MoveOnly const&) = delete; + MoveOnly& operator=(MoveOnly const&) = delete; +}; + +int main() { + { + auto xs = hana::make_tuple(MoveOnly{}); + auto by_val = [](auto) { }; + + by_val(std::move(xs)); + by_val(hana::front(std::move(xs))); + by_val(hana::at_c<0>(std::move(xs))); + by_val(hana::back(std::move(xs))); + } + + { + auto const& xs = hana::make_tuple(MoveOnly{}); + auto by_const_ref = [](auto const&) { }; + + by_const_ref(xs); + by_const_ref(hana::front(xs)); + by_const_ref(hana::at_c<0>(xs)); + by_const_ref(hana::back(xs)); + } + + { + auto xs = hana::make_tuple(MoveOnly{}); + auto by_ref = [](auto&) { }; + + by_ref(xs); + by_ref(hana::front(xs)); + by_ref(hana::at_c<0>(xs)); + by_ref(hana::back(xs)); + } +} |