text: //
  // serial_port_service.hpp
  // ~~~~~~~~~~~~~~~~~~~~~~~
  //
  // Copyright (c) 2003-2018 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 BOOST_ASIO_SERIAL_PORT_SERVICE_HPP
  #define BOOST_ASIO_SERIAL_PORT_SERVICE_HPP
  
  #if defined(_MSC_VER) && (_MSC_VER >= 1200)
  # pragma once
  #endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
  
  #include <boost/asio/detail/config.hpp>
  
  #if defined(BOOST_ASIO_ENABLE_OLD_SERVICES)
  
  #if defined(BOOST_ASIO_HAS_SERIAL_PORT) \
    || defined(GENERATING_DOCUMENTATION)
  
  #include <cstddef>
  #include <string>
  #include <boost/asio/async_result.hpp>
  #include <boost/asio/detail/reactive_serial_port_service.hpp>
  #include <boost/asio/detail/win_iocp_serial_port_service.hpp>
  #include <boost/asio/error.hpp>
  #include <boost/asio/io_context.hpp>
  #include <boost/asio/serial_port_base.hpp>
  
  #include <boost/asio/detail/push_options.hpp>
  
  namespace boost {
  namespace asio {
  
  /// Default service implementation for a serial port.
  class serial_port_service
  #if defined(GENERATING_DOCUMENTATION)
    : public boost::asio::io_context::service
  #else
    : public boost::asio::detail::service_base<serial_port_service>
  #endif
  {
  public:
  #if defined(GENERATING_DOCUMENTATION)
    /// The unique service identifier.
    static boost::asio::io_context::id id;
  #endif
  
  private:
    // The type of the platform-specific implementation.
  #if defined(BOOST_ASIO_HAS_IOCP)
    typedef detail::win_iocp_serial_port_service service_impl_type;
  #else
    typedef detail::reactive_serial_port_service service_impl_type;
  #endif
  
  public:
    /// The type of a serial port implementation.
  #if defined(GENERATING_DOCUMENTATION)
    typedef implementation_defined implementation_type;
  #else
    typedef service_impl_type::implementation_type implementation_type;
  #endif
  
    /// The native handle type.
  #if defined(GENERATING_DOCUMENTATION)
    typedef implementation_defined native_handle_type;
  #else
    typedef service_impl_type::native_handle_type native_handle_type;
  #endif
  
    /// Construct a new serial port service for the specified io_context.
    explicit serial_port_service(boost::asio::io_context& io_context)
      : boost::asio::detail::service_base<serial_port_service>(io_context),
        service_impl_(io_context)
    {
    }
  
    /// Construct a new serial port implementation.
    void construct(implementation_type& impl)
    {
      service_impl_.construct(impl);
    }
  
  #if defined(BOOST_ASIO_HAS_MOVE) || defined(GENERATING_DOCUMENTATION)
    /// Move-construct a new serial port implementation.
    void move_construct(implementation_type& impl,
        implementation_type& other_impl)
    {
      service_impl_.move_construct(impl, other_impl);
    }
  
    /// Move-assign from another serial port implementation.
    void move_assign(implementation_type& impl,
        serial_port_service& other_service,
        implementation_type& other_impl)
    {
      service_impl_.move_assign(impl, other_service.service_impl_, other_impl);
    }
  #endif // defined(BOOST_ASIO_HAS_MOVE) || defined(GENERATING_DOCUMENTATION)
  
    /// Destroy a serial port implementation.
    void destroy(implementation_type& impl)
    {
      service_impl_.destroy(impl);
    }
  
    /// Open a serial port.
    BOOST_ASIO_SYNC_OP_VOID open(implementation_type& impl,
        const std::string& device, boost::system::error_code& ec)
    {
      service_impl_.open(impl, device, ec);
      BOOST_ASIO_SYNC_OP_VOID_RETURN(ec);
    }
  
    /// Assign an existing native handle to a serial port.
    BOOST_ASIO_SYNC_OP_VOID assign(implementation_type& impl,
        const native_handle_type& handle, boost::system::error_code& ec)
    {
      service_impl_.assign(impl, handle, ec);
      BOOST_ASIO_SYNC_OP_VOID_RETURN(ec);
    }
  
    /// Determine whether the handle is open.
    bool is_open(const implementation_type& impl) const
    {
      return service_impl_.is_open(impl);
    }
  
    /// Close a serial port implementation.
    BOOST_ASIO_SYNC_OP_VOID close(implementation_type& impl,
        boost::system::error_code& ec)
    {
      service_impl_.close(impl, ec);
      BOOST_ASIO_SYNC_OP_VOID_RETURN(ec);
    }
  
    /// Get the native handle implementation.
    native_handle_type native_handle(implementation_type& impl)
    {
      return service_impl_.native_handle(impl);
    }
  
    /// Cancel all asynchronous operations associated with the handle.
    BOOST_ASIO_SYNC_OP_VOID cancel(implementation_type& impl,
        boost::system::error_code& ec)
    {
      service_impl_.cancel(impl, ec);
      BOOST_ASIO_SYNC_OP_VOID_RETURN(ec);
    }
  
    /// Set a serial port option.
    template <typename SettableSerialPortOption>
    BOOST_ASIO_SYNC_OP_VOID set_option(implementation_type& impl,
        const SettableSerialPortOption& option, boost::system::error_code& ec)
    {
      service_impl_.set_option(impl, option, ec);
      BOOST_ASIO_SYNC_OP_VOID_RETURN(ec);
    }
  
    /// Get a serial port option.
    template <typename GettableSerialPortOption>
    BOOST_ASIO_SYNC_OP_VOID get_option(const implementation_type& impl,
        GettableSerialPortOption& option, boost::system::error_code& ec) const
    {
      service_impl_.get_option(impl, option, ec);
      BOOST_ASIO_SYNC_OP_VOID_RETURN(ec);
    }
  
    /// Send a break sequence to the serial port.
    BOOST_ASIO_SYNC_OP_VOID send_break(implementation_type& impl,
        boost::system::error_code& ec)
    {
      service_impl_.send_break(impl, ec);
      BOOST_ASIO_SYNC_OP_VOID_RETURN(ec);
    }
  
    /// Write the given data to the stream.
    template <typename ConstBufferSequence>
    std::size_t write_some(implementation_type& impl,
        const ConstBufferSequence& buffers, boost::system::error_code& ec)
    {
      return service_impl_.write_some(impl, buffers, ec);
    }
  
    /// Start an asynchronous write.
    template <typename ConstBufferSequence, typename WriteHandler>
    BOOST_ASIO_INITFN_RESULT_TYPE(WriteHandler,
        void (boost::system::error_code, std::size_t))
    async_write_some(implementation_type& impl,
        const ConstBufferSequence& buffers,
        BOOST_ASIO_MOVE_ARG(WriteHandler) handler)
    {
      async_completion<WriteHandler,
        void (boost::system::error_code, std::size_t)> init(handler);
  
      service_impl_.async_write_some(impl, buffers, init.completion_handler);
  
      return init.result.get();
    }
  
    /// Read some data from the stream.
    template <typename MutableBufferSequence>
    std::size_t read_some(implementation_type& impl,
        const MutableBufferSequence& buffers, boost::system::error_code& ec)
    {
      return service_impl_.read_some(impl, buffers, ec);
    }
  
    /// Start an asynchronous read.
    template <typename MutableBufferSequence, typename ReadHandler>
    BOOST_ASIO_INITFN_RESULT_TYPE(ReadHandler,
        void (boost::system::error_code, std::size_t))
    async_read_some(implementation_type& impl,
        const MutableBufferSequence& buffers,
        BOOST_ASIO_MOVE_ARG(ReadHandler) handler)
    {
      async_completion<ReadHandler,
        void (boost::system::error_code, std::size_t)> init(handler);
  
      service_impl_.async_read_some(impl, buffers, init.completion_handler);
  
      return init.result.get();
    }
  
  private:
    // Destroy all user-defined handler objects owned by the service.
    void shutdown()
    {
      service_impl_.shutdown();
    }
  
    // The platform-specific implementation.
    service_impl_type service_impl_;
  };
  
  } // namespace asio
  } // namespace boost
  
  #include <boost/asio/detail/pop_options.hpp>
  
  #endif // defined(BOOST_ASIO_HAS_SERIAL_PORT)
         //   || defined(GENERATING_DOCUMENTATION)
  
  #endif // defined(BOOST_ASIO_ENABLE_OLD_SERVICES)
  
  #endif // BOOST_ASIO_SERIAL_PORT_SERVICE_HPP
  