Chris@16: // (C) Copyright 2008 CodeRage, LLC (turkanis at coderage dot com)
Chris@16: // (C) Copyright 2003-2007 Jonathan Turkanis
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: // See http://www.boost.org/libs/iostreams for documentation.
Chris@16: 
Chris@16: #ifndef BOOST_IOSTREAMS_FLUSH_HPP_INCLUDED
Chris@16: #define BOOST_IOSTREAMS_FLUSH_HPP_INCLUDED
Chris@16: 
Chris@16: #if defined(_MSC_VER) && (_MSC_VER >= 1020)
Chris@16: # pragma once
Chris@16: #endif
Chris@16: 
Chris@16: #include <boost/config.hpp>  // DEDUCED_TYPENAME, MSVC.
Chris@16: #include <boost/detail/workaround.hpp>
Chris@16: #include <boost/iostreams/detail/dispatch.hpp>
Chris@16: #include <boost/iostreams/detail/streambuf.hpp>
Chris@16: #include <boost/iostreams/detail/wrap_unwrap.hpp>
Chris@16: #include <boost/iostreams/operations_fwd.hpp>
Chris@16: #include <boost/iostreams/traits.hpp>
Chris@16: #include <boost/mpl/if.hpp>
Chris@16: 
Chris@16: // Must come last.
Chris@16: #include <boost/iostreams/detail/config/disable_warnings.hpp>
Chris@16: 
Chris@16: namespace boost { namespace iostreams {
Chris@16: 
Chris@16: namespace detail {
Chris@16: 
Chris@16: template<typename T>
Chris@16: struct flush_device_impl;
Chris@16: 
Chris@16: template<typename T>
Chris@16: struct flush_filter_impl;
Chris@16: 
Chris@16: } // End namespace detail.
Chris@16: 
Chris@16: template<typename T>
Chris@16: bool flush(T& t)
Chris@16: { return detail::flush_device_impl<T>::flush(detail::unwrap(t)); }
Chris@16: 
Chris@16: template<typename T, typename Sink>
Chris@16: bool flush(T& t, Sink& snk)
Chris@16: { return detail::flush_filter_impl<T>::flush(detail::unwrap(t), snk); }
Chris@16: 
Chris@16: namespace detail {
Chris@16: 
Chris@16: //------------------Definition of flush_device_impl---------------------------//
Chris@16: 
Chris@16: template<typename T>
Chris@16: struct flush_device_impl
Chris@16:     : mpl::if_<
Chris@16:           is_custom<T>,
Chris@16:           operations<T>,
Chris@16:           flush_device_impl<
Chris@16:               BOOST_DEDUCED_TYPENAME
Chris@16:               dispatch<
Chris@16:                   T, ostream_tag, streambuf_tag, flushable_tag, any_tag
Chris@16:               >::type
Chris@16:           >
Chris@16:       >::type
Chris@16:     { };
Chris@16: 
Chris@16: template<>
Chris@16: struct flush_device_impl<ostream_tag> {
Chris@16:     template<typename T>
Chris@16:     static bool flush(T& t)
Chris@16:     { return t.rdbuf()->BOOST_IOSTREAMS_PUBSYNC() == 0; }
Chris@16: };
Chris@16: 
Chris@16: template<>
Chris@16: struct flush_device_impl<streambuf_tag> {
Chris@16:     template<typename T>
Chris@16:     static bool flush(T& t)
Chris@16:     { return t.BOOST_IOSTREAMS_PUBSYNC() == 0; }
Chris@16: };
Chris@16: 
Chris@16: template<>
Chris@16: struct flush_device_impl<flushable_tag> {
Chris@16:     template<typename T>
Chris@16:     static bool flush(T& t) { return t.flush(); }
Chris@16: };
Chris@16: 
Chris@16: template<>
Chris@16: struct flush_device_impl<any_tag> {
Chris@16:     template<typename T>
Chris@16:     static bool flush(T&) { return true; }
Chris@16: };
Chris@16: 
Chris@16: //------------------Definition of flush_filter_impl---------------------------//
Chris@16: 
Chris@16: template<typename T>
Chris@16: struct flush_filter_impl
Chris@16:     : mpl::if_<
Chris@16:           is_custom<T>,
Chris@16:           operations<T>,
Chris@16:           flush_filter_impl<
Chris@16:               BOOST_DEDUCED_TYPENAME
Chris@16:               dispatch<
Chris@16:                   T, flushable_tag, any_tag
Chris@16:               >::type
Chris@16:           >
Chris@16:       >::type
Chris@16:     { };
Chris@16: 
Chris@16: template<>
Chris@16: struct flush_filter_impl<flushable_tag> {
Chris@16:     template<typename T, typename Sink>
Chris@16:     static bool flush(T& t, Sink& snk) { return t.flush(snk); }
Chris@16: };
Chris@16: 
Chris@16: template<>
Chris@16: struct flush_filter_impl<any_tag> {
Chris@16:     template<typename T, typename Sink>
Chris@16:     static bool flush(T&, Sink&) { return false; }
Chris@16: };
Chris@16: 
Chris@16: } // End namespace detail.
Chris@16: 
Chris@16: } } // End namespaces iostreams, boost.
Chris@16: 
Chris@16: #include <boost/iostreams/detail/config/enable_warnings.hpp>
Chris@16: 
Chris@16: #endif // #ifndef BOOST_IOSTREAMS_FLUSH_HPP_INCLUDED