Adding upstream version 16.2.11+ds.upstream/16.2.11+dsupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 97 insertions, 0 deletions

diff --git a/src/boost/libs/hana/test/pair/cnstr.move.cpp b/src/boost/libs/hana/test/pair/cnstr.move.cpp
new file mode 100644
index 000000000..cb13e7243
--- /dev/null
+++ b/src/boost/libs/hana/test/pair/cnstr.move.cpp
@@ -0,0 +1,97 @@
+// 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/first.hpp>
+#include <boost/hana/pair.hpp>
+#include <boost/hana/second.hpp>
+
+#include <type_traits>
+#include <utility>
+namespace hana = boost::hana;
+
+
+struct MoveOnly {
+    int data_;
+    MoveOnly(MoveOnly const&) = delete;
+    MoveOnly& operator=(MoveOnly const&) = delete;
+    MoveOnly(int data) : data_(data) { }
+    MoveOnly(MoveOnly&& x) : data_(x.data_) { x.data_ = 0; }
+
+    MoveOnly& operator=(MoveOnly&& x)
+    { data_ = x.data_; x.data_ = 0; return *this; }
+
+    bool operator==(const MoveOnly& x) const { return data_ == x.data_; }
+};
+
+struct MoveOnlyDerived : MoveOnly {
+    MoveOnlyDerived(MoveOnlyDerived&&) = default;
+    MoveOnlyDerived(int data = 1) : MoveOnly(data) { }
+};
+
+template <typename Target>
+struct implicit_to {
+    constexpr operator Target() const { return Target{}; }
+};
+
+struct NoMove {
+    NoMove() = default;
+    NoMove(NoMove const&) = delete;
+    NoMove(NoMove&&) = delete;
+};
+
+// Note: It is also useful to check with a non-empty class, because that
+//       triggers different instantiations due to EBO.
+struct NoMove_nonempty {
+    NoMove_nonempty() = default;
+    NoMove_nonempty(NoMove_nonempty const&) = delete;
+    NoMove_nonempty(NoMove_nonempty&&) = delete;
+    int i;
+};
+
+int main() {
+    {
+        hana::pair<MoveOnly, short> p1(MoveOnly{3}, 4);
+        hana::pair<MoveOnly, short> p2(std::move(p1));
+        BOOST_HANA_RUNTIME_CHECK(hana::first(p2) == MoveOnly{3});
+        BOOST_HANA_RUNTIME_CHECK(hana::second(p2) == 4);
+    }
+
+    // Make sure it works across pair types
+    {
+        hana::pair<MoveOnlyDerived, short> p1(MoveOnlyDerived{3}, 4);
+        hana::pair<MoveOnly, long> p2 = std::move(p1);
+        BOOST_HANA_RUNTIME_CHECK(hana::first(p2) == MoveOnly{3});
+        BOOST_HANA_RUNTIME_CHECK(hana::second(p2) == 4);
+    }
+    {
+        struct target1 {
+            target1() = default;
+            target1(target1 const&) = delete;
+            target1(target1&&) = default;
+        };
+
+        struct target2 {
+            target2() = default;
+            target2(target2 const&) = delete;
+            target2(target2&&) = default;
+        };
+        using Target = hana::pair<target1, target2>;
+        Target p1(hana::make_pair(target1{}, target2{})); (void)p1;
+        Target p2(hana::make_pair(implicit_to<target1>{}, target2{})); (void)p2;
+        Target p3(hana::make_pair(target1{}, implicit_to<target2>{})); (void)p3;
+        Target p4(hana::make_pair(implicit_to<target1>{}, implicit_to<target2>{})); (void)p4;
+    }
+
+    // Make sure we don't define the move constructor when it shouldn't be defined.
+    {
+        using Pair1 = hana::pair<NoMove, NoMove>;
+        Pair1 pair1; (void)pair1;
+        static_assert(!std::is_move_constructible<Pair1>::value, "");
+
+        using Pair2 = hana::pair<NoMove_nonempty, NoMove_nonempty>;
+        Pair2 pair2; (void)pair2;
+        static_assert(!std::is_move_constructible<Pair2>::value, "");
+    }
+}