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Diffstat (limited to '3rdparty/asio/src/tests/properties/cpp11/require_free.cpp')
-rw-r--r-- | 3rdparty/asio/src/tests/properties/cpp11/require_free.cpp | 64 |
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 new file mode 100644 index 00000000000..1acd5bc78ce --- /dev/null +++ b/3rdparty/asio/src/tests/properties/cpp11/require_free.cpp @@ -0,0 +1,64 @@ +// +// cpp11/require_free.cpp +// ~~~~~~~~~~~~~~~~~~~~~~ +// +// Copyright (c) 2003-2024 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; +} |