import quincy beta 17.1.0

[ceph.git] / ceph / src / boost / libs / asio / test / properties / cpp14 / require_member.cpp

diff --git a/ceph/src/boost/libs/asio/test/properties/cpp14/require_member.cpp b/ceph/src/boost/libs/asio/test/properties/cpp14/require_member.cpp
new file mode 100644 (file)
index 0000000..c433ee9
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+++ b/ceph/src/boost/libs/asio/test/properties/cpp14/require_member.cpp
@@ -0,0 +1,55 @@
+//
+// cpp14/require_member.cpp
+// ~~~~~~~~~~~~~~~~~~~~~~~~
+//
+// Copyright (c) 2003-2020 Christopher M. Kohlhoff (chris at kohlhoff dot com)
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+
+#include <boost/asio/require.hpp>
+#include <cassert>
+
+template <int>
+struct prop
+{
+  template <typename> static constexpr bool is_applicable_property_v = true;
+  static constexpr bool is_requirable = true;
+};
+
+template <int>
+struct object
+{
+  template <int N>
+  constexpr object<N> require(prop<N>) const
+  {
+    return object<N>();
+  }
+};
+
+int main()
+{
+  object<1> o1 = {};
+  object<2> o2 = boost::asio::require(o1, prop<2>());
+  object<3> o3 = boost::asio::require(o1, prop<2>(), prop<3>());
+  object<4> o4 = boost::asio::require(o1, prop<2>(), prop<3>(), prop<4>());
+  (void)o2;
+  (void)o3;
+  (void)o4;
+
+  const object<1> o5 = {};
+  object<2> o6 = boost::asio::require(o5, prop<2>());
+  object<3> o7 = boost::asio::require(o5, prop<2>(), prop<3>());
+  object<4> o8 = boost::asio::require(o5, prop<2>(), prop<3>(), prop<4>());
+  (void)o6;
+  (void)o7;
+  (void)o8;
+
+  constexpr object<2> o9 = boost::asio::require(object<1>(), prop<2>());
+  constexpr object<3> o10 = boost::asio::require(object<1>(), prop<2>(), prop<3>());
+  constexpr object<4> o11 = boost::asio::require(object<1>(), prop<2>(), prop<3>(), prop<4>());
+  (void)o9;
+  (void)o10;
+  (void)o11;
+}