Chris@16: //
Chris@16: // is_read_buffered.hpp
Chris@16: // ~~~~~~~~~~~~~~~~~~~~
Chris@16: //
Chris@101: // Copyright (c) 2003-2015 Christopher M. Kohlhoff (chris at kohlhoff dot com)
Chris@16: //
Chris@16: // Distributed under the Boost Software License, Version 1.0. (See accompanying
Chris@16: // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
Chris@16: //
Chris@16: 
Chris@16: #ifndef BOOST_ASIO_IS_READ_BUFFERED_HPP
Chris@16: #define BOOST_ASIO_IS_READ_BUFFERED_HPP
Chris@16: 
Chris@16: #if defined(_MSC_VER) && (_MSC_VER >= 1200)
Chris@16: # pragma once
Chris@16: #endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
Chris@16: 
Chris@16: #include <boost/asio/detail/config.hpp>
Chris@16: #include <boost/asio/buffered_read_stream_fwd.hpp>
Chris@16: #include <boost/asio/buffered_stream_fwd.hpp>
Chris@16: 
Chris@16: #include <boost/asio/detail/push_options.hpp>
Chris@16: 
Chris@16: namespace boost {
Chris@16: namespace asio {
Chris@16: 
Chris@16: namespace detail {
Chris@16: 
Chris@16: template <typename Stream>
Chris@16: char is_read_buffered_helper(buffered_stream<Stream>* s);
Chris@16: 
Chris@16: template <typename Stream>
Chris@16: char is_read_buffered_helper(buffered_read_stream<Stream>* s);
Chris@16: 
Chris@16: struct is_read_buffered_big_type { char data[10]; };
Chris@16: is_read_buffered_big_type is_read_buffered_helper(...);
Chris@16: 
Chris@16: } // namespace detail
Chris@16: 
Chris@16: /// The is_read_buffered class is a traits class that may be used to determine
Chris@16: /// whether a stream type supports buffering of read data.
Chris@16: template <typename Stream>
Chris@16: class is_read_buffered
Chris@16: {
Chris@16: public:
Chris@16: #if defined(GENERATING_DOCUMENTATION)
Chris@16:   /// The value member is true only if the Stream type supports buffering of
Chris@16:   /// read data.
Chris@16:   static const bool value;
Chris@16: #else
Chris@16:   BOOST_ASIO_STATIC_CONSTANT(bool,
Chris@16:       value = sizeof(detail::is_read_buffered_helper((Stream*)0)) == 1);
Chris@16: #endif
Chris@16: };
Chris@16: 
Chris@16: } // namespace asio
Chris@16: } // namespace boost
Chris@16: 
Chris@16: #include <boost/asio/detail/pop_options.hpp>
Chris@16: 
Chris@16: #endif // BOOST_ASIO_IS_READ_BUFFERED_HPP