is_executor.hpp 1.3 KB

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  1. //
  2. // is_executor.hpp
  3. // ~~~~~~~~~~~~~~~
  4. //
  5. // Copyright (c) 2003-2021 Christopher M. Kohlhoff (chris at kohlhoff dot com)
  6. //
  7. // Distributed under the Boost Software License, Version 1.0. (See accompanying
  8. // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
  9. //
  10. #ifndef BOOST_ASIO_IS_EXECUTOR_HPP
  11. #define BOOST_ASIO_IS_EXECUTOR_HPP
  12. #if defined(_MSC_VER) && (_MSC_VER >= 1200)
  13. # pragma once
  14. #endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
  15. #include <boost/asio/detail/config.hpp>
  16. #include <boost/asio/detail/is_executor.hpp>
  17. #include <boost/asio/detail/push_options.hpp>
  18. namespace boost {
  19. namespace asio {
  20. /// The is_executor trait detects whether a type T meets the Executor type
  21. /// requirements.
  22. /**
  23. * Class template @c is_executor is a UnaryTypeTrait that is derived from @c
  24. * true_type if the type @c T meets the syntactic requirements for Executor,
  25. * otherwise @c false_type.
  26. */
  27. template <typename T>
  28. struct is_executor
  29. #if defined(GENERATING_DOCUMENTATION)
  30. : integral_constant<bool, automatically_determined>
  31. #else // defined(GENERATING_DOCUMENTATION)
  32. : boost::asio::detail::is_executor<T>
  33. #endif // defined(GENERATING_DOCUMENTATION)
  34. {
  35. };
  36. } // namespace asio
  37. } // namespace boost
  38. #include <boost/asio/detail/pop_options.hpp>
  39. #endif // BOOST_ASIO_IS_EXECUTOR_HPP