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-rw-r--r--3rdparty/asio/src/tests/properties/cpp11/require_free.cpp64
1 files changed, 64 insertions, 0 deletions
diff --git a/3rdparty/asio/src/tests/properties/cpp11/require_free.cpp b/3rdparty/asio/src/tests/properties/cpp11/require_free.cpp
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index 00000000000..bd1569f361c
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+++ b/3rdparty/asio/src/tests/properties/cpp11/require_free.cpp
@@ -0,0 +1,64 @@
+//
+// cpp11/require_free.cpp
+// ~~~~~~~~~~~~~~~~~~~~~~
+//
+// Copyright (c) 2003-2021 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 "asio/require.hpp"
+#include <cassert>
+
+template <int>
+struct prop
+{
+ static constexpr bool is_requirable = true;
+};
+
+template <int>
+struct object
+{
+ template <int N>
+ friend constexpr object<N> require(const object&, prop<N>)
+ {
+ return object<N>();
+ }
+};
+
+namespace asio {
+
+template<int N, int M>
+struct is_applicable_property<object<N>, prop<M> >
+{
+ static constexpr bool value = true;
+};
+
+} // namespace asio
+
+int main()
+{
+ object<1> o1 = {};
+ object<2> o2 = asio::require(o1, prop<2>());
+ object<3> o3 = asio::require(o1, prop<2>(), prop<3>());
+ object<4> o4 = asio::require(o1, prop<2>(), prop<3>(), prop<4>());
+ (void)o2;
+ (void)o3;
+ (void)o4;
+
+ const object<1> o5 = {};
+ object<2> o6 = asio::require(o5, prop<2>());
+ object<3> o7 = asio::require(o5, prop<2>(), prop<3>());
+ object<4> o8 = asio::require(o5, prop<2>(), prop<3>(), prop<4>());
+ (void)o6;
+ (void)o7;
+ (void)o8;
+
+ constexpr object<2> o9 = asio::require(object<1>(), prop<2>());
+ constexpr object<3> o10 = asio::require(object<1>(), prop<2>(), prop<3>());
+ constexpr object<4> o11 = asio::require(object<1>(), prop<2>(), prop<3>(), prop<4>());
+ (void)o9;
+ (void)o10;
+ (void)o11;
+}