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//
// cpp14/prefer_static.cpp
// ~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2025 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/prefer.hpp>
#include <cassert>
template <int>
struct prop
{
template <typename> static constexpr bool is_applicable_property_v = true;
static constexpr bool is_preferable = true;
template <typename> static constexpr bool static_query_v = true;
static constexpr bool value() { return true; }
};
template <int>
struct object
{
};
int main()
{
object<1> o1 = {};
object<1> o2 = boost::asio::prefer(o1, prop<1>());
object<1> o3 = boost::asio::prefer(o1, prop<1>(), prop<1>());
object<1> o4 = boost::asio::prefer(o1, prop<1>(), prop<1>(), prop<1>());
(void)o2;
(void)o3;
(void)o4;
const object<1> o5 = {};
object<1> o6 = boost::asio::prefer(o5, prop<1>());
object<1> o7 = boost::asio::prefer(o5, prop<1>(), prop<1>());
object<1> o8 = boost::asio::prefer(o5, prop<1>(), prop<1>(), prop<1>());
(void)o6;
(void)o7;
(void)o8;
constexpr object<1> o9 = boost::asio::prefer(object<1>(), prop<1>());
constexpr object<1> o10 = boost::asio::prefer(object<1>(), prop<1>(), prop<1>());
constexpr object<1> o11 = boost::asio::prefer(object<1>(), prop<1>(), prop<1>(), prop<1>());
(void)o9;
(void)o10;
(void)o11;
}
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