forked from boostorg/beast
29 lines
827 B
C++
29 lines
827 B
C++
//
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// Copyright (c) 2013-2017 Vinnie Falco (vinnie dot falco at gmail dot com)
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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#ifndef BEAST_HANDLER_CONCEPTS_HPP
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#define BEAST_HANDLER_CONCEPTS_HPP
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#include <beast/config.hpp>
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#include <beast/core/detail/type_traits.hpp>
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#include <type_traits>
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namespace beast {
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/// Determine if `T` meets the requirements of @b `CompletionHandler`.
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template<class T, class Signature>
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#if BEAST_DOXYGEN
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using is_CompletionHandler = std::integral_constant<bool, ...>;
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#else
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using is_CompletionHandler = std::integral_constant<bool,
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std::is_copy_constructible<typename std::decay<T>::type>::value &&
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detail::is_invocable<T, Signature>::value>;
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#endif
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} // beast
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#endif
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