1 files changed, 45 insertions, 0 deletions
diff --git a/src/boost/libs/hana/test/_include/support/tracked_move_only.hpp b/src/boost/libs/hana/test/_include/support/tracked_move_only.hpp
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+++ b/src/boost/libs/hana/test/_include/support/tracked_move_only.hpp
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+// 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)
+
+#ifndef TEST_SUPPORT_TRACKED_MOVE_ONLY_HPP
+#define TEST_SUPPORT_TRACKED_MOVE_ONLY_HPP
+
+#include <boost/hana/bool.hpp>
+#include <boost/hana/fwd/hash.hpp>
+#include <boost/hana/type.hpp>
+
+#include <support/tracked.hpp>
+
+#include <utility>
+
+
+// A move-only type that's Tracked. It is also Comparable and Hashable so it
+// can be used in associative containers.
+template <int i>
+struct TrackedMoveOnly : Tracked {
+    TrackedMoveOnly() : Tracked(i) { }
+    TrackedMoveOnly(TrackedMoveOnly const&) = delete;
+    TrackedMoveOnly& operator=(TrackedMoveOnly const&) = delete;
+    TrackedMoveOnly(TrackedMoveOnly&& x)
+        : Tracked(std::move(x))
+    { }
+};
+
+template <int i, int j>
+constexpr auto operator==(TrackedMoveOnly<i> const&, TrackedMoveOnly<j> const&)
+{ return boost::hana::bool_c<i == j>; }
+
+template <int i, int j>
+constexpr auto operator!=(TrackedMoveOnly<i> const&, TrackedMoveOnly<j> const&)
+{ return boost::hana::bool_c<i != j>; }
+
+namespace boost { namespace hana {
+    template <int i>
+    struct hash_impl<TrackedMoveOnly<i>> {
+        static constexpr auto apply(TrackedMoveOnly<i> const&)
+        { return hana::type_c<TrackedMoveOnly<i>>; };
+    };
+}}
+
+#endif // !TEST_SUPPORT_TRACKED_MOVE_ONLY_HPP