Added thirdparty: boost library

2026-08-16 20:28:09 +00:00 · 2024-01-06 19:55:56 +02:00
parent bf49f439e1
commit bccd1e7051
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+/*!
+@file
+Defines `boost::hana::Metafunction`.
+
+Copyright Louis Dionne 2013-2022
+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 BOOST_HANA_CONCEPT_METAFUNCTION_HPP
+#define BOOST_HANA_CONCEPT_METAFUNCTION_HPP
+
+#include <boost/hana/fwd/concept/metafunction.hpp>
+
+#include <boost/hana/config.hpp>
+#include <boost/hana/core/tag_of.hpp>
+#include <boost/hana/detail/integral_constant.hpp>
+
+
+namespace boost { namespace hana {
+    namespace detail {
+        template <typename F, typename Tag = typename tag_of<F>::type>
+        struct metafunction_dispatch
+            : hana::integral_constant<bool,
+                Metafunction<Tag>::value
+            >
+        { };
+
+        template <typename F>
+        struct metafunction_dispatch<F, F>
+            : hana::integral_constant<bool, false>
+        { };
+    }
+
+    template <typename F>
+    struct Metafunction
+        : detail::metafunction_dispatch<F>
+    { };
+}} // end namespace boost::hana
+
+#endif // !BOOST_HANA_CONCEPT_METAFUNCTION_HPP