text: //
  // detail/winrt_async_op.hpp
  // ~~~~~~~~~~~~~~~~~~~~~~~~~
  //
  // Copyright (c) 2003-2022 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)
  //
  
  #ifndef ASIO_DETAIL_WINRT_ASYNC_OP_HPP
  #define ASIO_DETAIL_WINRT_ASYNC_OP_HPP
  
  #if defined(_MSC_VER) && (_MSC_VER >= 1200)
  # pragma once
  #endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
  
  #include "asio/detail/config.hpp"
  #include "asio/detail/operation.hpp"
  
  #include "asio/detail/push_options.hpp"
  
  namespace asio {
  namespace detail {
  
  template <typename TResult>
  class winrt_async_op
    : public operation
  {
  public:
    // The error code to be passed to the completion handler.
    asio::error_code ec_;
  
    // The result of the operation, to be passed to the completion handler.
    TResult result_;
  
  protected:
    winrt_async_op(func_type complete_func)
      : operation(complete_func),
        result_()
    {
    }
  };
  
  template <>
  class winrt_async_op<void>
    : public operation
  {
  public:
    // The error code to be passed to the completion handler.
    asio::error_code ec_;
  
  protected:
    winrt_async_op(func_type complete_func)
      : operation(complete_func)
    {
    }
  };
  
  } // namespace detail
  } // namespace asio
  
  #include "asio/detail/pop_options.hpp"
  
  #endif // ASIO_DETAIL_WINRT_ASYNC_OP_HPP
  