1 files changed, 61 insertions, 0 deletions
diff --git a/src/boost/libs/hana/test/_include/support/minimal_product.hpp b/src/boost/libs/hana/test/_include/support/minimal_product.hpp
new file mode 100644
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--- /dev/null
+++ b/src/boost/libs/hana/test/_include/support/minimal_product.hpp
@@ -0,0 +1,61 @@
+// 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_MINIMAL_PRODUCT_HPP
+#define TEST_SUPPORT_MINIMAL_PRODUCT_HPP
+
+#include <boost/hana/fwd/core/make.hpp>
+#include <boost/hana/fwd/first.hpp>
+#include <boost/hana/fwd/second.hpp>
+
+#include <type_traits>
+
+
+struct MinimalProduct;
+
+template <typename X, typename Y>
+struct product_t {
+    X fst;
+    Y snd;
+    using hana_tag = MinimalProduct;
+};
+
+struct make_minimal_product {
+    template <typename T, typename U>
+    constexpr product_t<typename std::decay<T>::type,
+                        typename std::decay<U>::type>
+    operator()(T&& t, U&& u) const {
+        return {static_cast<T&&>(t), static_cast<U&&>(u)};
+    }
+};
+
+constexpr make_minimal_product minimal_product{};
+
+namespace boost { namespace hana {
+    //////////////////////////////////////////////////////////////////////////
+    // Product
+    //////////////////////////////////////////////////////////////////////////
+    template <>
+    struct make_impl<MinimalProduct> {
+        template <typename X, typename Y>
+        static constexpr auto apply(X x, Y y)
+        { return ::minimal_product(x, y); }
+    };
+
+    template <>
+    struct first_impl<MinimalProduct> {
+        template <typename P>
+        static constexpr decltype(auto) apply(P&& p)
+        { return p.fst; }
+    };
+
+    template <>
+    struct second_impl<MinimalProduct> {
+        template <typename P>
+        static constexpr decltype(auto) apply(P&& p)
+        { return p.snd; }
+    };
+}} // end namespace boost::hana
+
+#endif // !TEST_SUPPORT_MINIMAL_PRODUCT_HPP