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