/Src/Dependencies/Boost/boost/iostreams/detail/vc6/close.hpp
http://hadesmem.googlecode.com/ · C++ Header · 129 lines · 104 code · 19 blank · 6 comment · 10 complexity · 1d4f3590c48e3e36cd5892ffe54e58cf MD5 · raw file
- // (C) Copyright 2008 CodeRage, LLC (turkanis at coderage dot com)
- // (C) Copyright 2005-2007 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.
- namespace boost { namespace iostreams {
- namespace detail {
- template<typename T>
- struct close_impl;
- } // End namespace detail.
- template<typename T>
- void close(T& t) { detail::close_all(t); }
- template<typename T>
- void close(T& t, BOOST_IOS::openmode which)
- {
- typedef typename detail::unwrapped_type<T>::type unwrapped;
- detail::close_impl<T>::inner<unwrapped>::close(detail::unwrap(t), which);
- }
- template<typename T, typename Sink>
- void close(T& t, Sink& snk, BOOST_IOS::openmode which)
- {
- typedef typename detail::unwrapped_type<T>::type unwrapped;
- detail::close_impl<T>::inner<unwrapped>::close(detail::unwrap(t), snk, which);
- }
- namespace detail {
- //------------------Definition of close_impl----------------------------------//
- template<typename T>
- struct close_tag {
- typedef typename category_of<T>::type category;
- typedef typename
- mpl::eval_if<
- is_convertible<category, closable_tag>,
- mpl::if_<
- mpl::or_<
- is_convertible<category, two_sequence>,
- is_convertible<category, dual_use>
- >,
- two_sequence,
- closable_tag
- >,
- mpl::identity<any_tag>
- >::type type;
- };
- template<typename T>
- struct close_impl
- : mpl::if_<
- is_custom<T>,
- operations<T>,
- close_impl<BOOST_DEDUCED_TYPENAME close_tag<T>::type>
- >::type
- { };
- template<>
- struct close_impl<any_tag> {
- template<typename T>
- struct inner {
- static void close(T& t, BOOST_IOS::openmode which)
- {
- if (which == BOOST_IOS::out)
- iostreams::flush(t);
- }
- template<typename Sink>
- static void close(T& t, Sink& snk, BOOST_IOS::openmode which)
- {
- if (which == BOOST_IOS::out) {
- non_blocking_adapter<Sink> nb(snk);
- iostreams::flush(t, nb);
- }
- }
- };
- };
- template<>
- struct close_impl<closable_tag> {
- template<typename T>
- struct inner {
- static void close(T& t, BOOST_IOS::openmode which)
- {
- typedef typename category_of<T>::type category;
- const bool in = is_convertible<category, input>::value &&
- !is_convertible<category, output>::value;
- if (in == (which == BOOST_IOS::in))
- t.close();
- }
- template<typename Sink>
- static void close(T& t, Sink& snk, BOOST_IOS::openmode which)
- {
- typedef typename category_of<T>::type category;
- const bool in = is_convertible<category, input>::value &&
- !is_convertible<category, output>::value;
- if (in == (which == BOOST_IOS::in)) {
- non_blocking_adapter<Sink> nb(snk);
- t.close(nb);
- }
- }
- };
- };
- template<>
- struct close_impl<two_sequence> {
- template<typename T>
- struct inner {
- static void close(T& t, BOOST_IOS::openmode which) { t.close(which); }
- template<typename Sink>
- static void close(T& t, Sink& snk, BOOST_IOS::openmode which)
- {
- non_blocking_adapter<Sink> nb(snk);
- t.close(nb, which);
- }
- };
- };
- } // End namespace detail.
- } } // End namespaces iostreams, boost.