1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/os/ossrv/ossrv_pub/boost_apis/boost/iostreams/detail/resolve.hpp Fri Jun 15 03:10:57 2012 +0200
1.3 @@ -0,0 +1,235 @@
1.4 +// (C) Copyright Jonathan Turkanis 2003.
1.5 +// Distributed under the Boost Software License, Version 1.0. (See accompanying
1.6 +// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt.)
1.7 +
1.8 +// See http://www.boost.org/libs/iostreams for documentation.
1.9 +
1.10 +#ifndef BOOST_IOSTREAMS_DETAIL_RESOLVE_HPP_INCLUDED
1.11 +#define BOOST_IOSTREAMS_DETAIL_RESOLVE_HPP_INCLUDED
1.12 +
1.13 +#if defined(_MSC_VER) && (_MSC_VER >= 1020)
1.14 +# pragma once
1.15 +#endif
1.16 +
1.17 +#include <boost/config.hpp> // partial spec, put size_t in std.
1.18 +#include <cstddef> // std::size_t.
1.19 +#include <boost/detail/is_incrementable.hpp>
1.20 +#include <boost/detail/workaround.hpp>
1.21 +#include <boost/iostreams/detail/adapter/mode_adapter.hpp>
1.22 +#include <boost/iostreams/detail/adapter/output_iterator_adapter.hpp>
1.23 +#include <boost/iostreams/detail/adapter/range_adapter.hpp>
1.24 +#include <boost/iostreams/detail/config/gcc.hpp>
1.25 +#include <boost/iostreams/detail/config/overload_resolution.hpp>
1.26 +#include <boost/iostreams/detail/config/wide_streams.hpp>
1.27 +#include <boost/iostreams/detail/enable_if_stream.hpp>
1.28 +#include <boost/iostreams/detail/is_dereferenceable.hpp>
1.29 +#include <boost/iostreams/detail/is_iterator_range.hpp>
1.30 +#include <boost/iostreams/detail/select.hpp>
1.31 +#include <boost/iostreams/detail/wrap_unwrap.hpp>
1.32 +#include <boost/iostreams/device/array.hpp>
1.33 +#include <boost/iostreams/traits.hpp>
1.34 +#include <boost/mpl/and.hpp>
1.35 +#include <boost/mpl/bool.hpp> // true_.
1.36 +#include <boost/mpl/if.hpp>
1.37 +#include <boost/range/iterator_range.hpp>
1.38 +#include <boost/type_traits/is_array.hpp>
1.39 +
1.40 +// Must come last.
1.41 +#include <boost/iostreams/detail/config/disable_warnings.hpp> // VC7.1 C4224.
1.42 +
1.43 +namespace boost { namespace iostreams { namespace detail {
1.44 +
1.45 +//------------------Definition of resolve-------------------------------------//
1.46 +
1.47 +#ifndef BOOST_IOSTREAMS_BROKEN_OVERLOAD_RESOLUTION //-------------------------//
1.48 +
1.49 +template<typename Mode, typename Ch, typename T>
1.50 +struct resolve_traits {
1.51 + typedef typename
1.52 + mpl::if_<
1.53 + mpl::and_<
1.54 + boost::detail::is_incrementable<T>, // Must come first
1.55 + is_dereferenceable<T> // for CW 9.[0-4]
1.56 + >,
1.57 + output_iterator_adapter<Mode, Ch, T>,
1.58 + const T&
1.59 + >::type type;
1.60 +};
1.61 +
1.62 +# ifndef BOOST_IOSTREAMS_NO_STREAM_TEMPLATES //-------------------------------//
1.63 +
1.64 +template<typename Mode, typename Ch, typename T>
1.65 +typename resolve_traits<Mode, Ch, T>::type
1.66 +resolve( const T& t
1.67 + BOOST_IOSTREAMS_DISABLE_IF_STREAM(T)
1.68 +
1.69 + // I suspect that the compilers which require this workaround may
1.70 + // be correct, but I'm not sure why :(
1.71 + #if BOOST_WORKAROUND(BOOST_INTEL_CXX_VERSION, BOOST_TESTED_AT(810)) ||\
1.72 + BOOST_WORKAROUND(__MWERKS__, BOOST_TESTED_AT(0x3205)) || \
1.73 + BOOST_WORKAROUND(BOOST_IOSTREAMS_GCC, BOOST_TESTED_AT(400)) \
1.74 + /**/
1.75 + , typename disable_if< is_iterator_range<T> >::type* = 0
1.76 + #endif
1.77 + )
1.78 +{
1.79 + typedef typename resolve_traits<Mode, Ch, T>::type return_type;
1.80 + return return_type(t);
1.81 +}
1.82 +
1.83 +template<typename Mode, typename Ch, typename Tr>
1.84 +mode_adapter< Mode, std::basic_streambuf<Ch, Tr> >
1.85 +resolve(std::basic_streambuf<Ch, Tr>& sb)
1.86 +{ return mode_adapter< Mode, std::basic_streambuf<Ch, Tr> >(wrap(sb)); }
1.87 +
1.88 +template<typename Mode, typename Ch, typename Tr>
1.89 +mode_adapter< Mode, std::basic_istream<Ch, Tr> >
1.90 +resolve(std::basic_istream<Ch, Tr>& is)
1.91 +{ return mode_adapter< Mode, std::basic_istream<Ch, Tr> >(wrap(is)); }
1.92 +
1.93 +template<typename Mode, typename Ch, typename Tr>
1.94 +mode_adapter< Mode, std::basic_ostream<Ch, Tr> >
1.95 +resolve(std::basic_ostream<Ch, Tr>& os)
1.96 +{ return mode_adapter< Mode, std::basic_ostream<Ch, Tr> >(wrap(os)); }
1.97 +
1.98 +template<typename Mode, typename Ch, typename Tr>
1.99 +mode_adapter< Mode, std::basic_iostream<Ch, Tr> >
1.100 +resolve(std::basic_iostream<Ch, Tr>& io)
1.101 +{ return mode_adapter< Mode, std::basic_iostream<Ch, Tr> >(wrap(io)); }
1.102 +
1.103 +template<typename Mode, typename Ch, std::size_t N>
1.104 +array_adapter<Mode, Ch> resolve(Ch (&array)[N])
1.105 +{ return array_adapter<Mode, Ch>(array); }
1.106 +
1.107 +template<typename Mode, typename Ch, typename Iter>
1.108 +range_adapter< Mode, boost::iterator_range<Iter> >
1.109 +resolve(const boost::iterator_range<Iter>& rng)
1.110 +{ return range_adapter< Mode, boost::iterator_range<Iter> >(rng); }
1.111 +
1.112 +# else // # ifndef BOOST_IOSTREAMS_NO_STREAM_TEMPLATES //---------------------//
1.113 +
1.114 +template<typename Mode, typename Ch, typename T>
1.115 +typename resolve_traits<Mode, Ch, T>::type
1.116 +resolve( const T& t
1.117 + BOOST_IOSTREAMS_DISABLE_IF_STREAM(T)
1.118 + #if defined(__GNUC__)
1.119 + , typename disable_if< is_iterator_range<T> >::type* = 0
1.120 + #endif
1.121 + )
1.122 +{
1.123 + typedef typename resolve_traits<Mode, Ch, T>::type return_type;
1.124 + return return_type(t);
1.125 +}
1.126 +
1.127 +template<typename Mode, typename Ch>
1.128 +mode_adapter<Mode, std::streambuf>
1.129 +resolve(std::streambuf& sb)
1.130 +{ return mode_adapter<Mode, std::streambuf>(wrap(sb)); }
1.131 +
1.132 +template<typename Mode, typename Ch>
1.133 +mode_adapter<Mode, std::istream>
1.134 +resolve(std::istream& is)
1.135 +{ return mode_adapter<Mode, std::istream>(wrap(is)); }
1.136 +
1.137 +template<typename Mode, typename Ch>
1.138 +mode_adapter<Mode, std::ostream>
1.139 +resolve(std::ostream& os)
1.140 +{ return mode_adapter<Mode, std::ostream>(wrap(os)); }
1.141 +
1.142 +template<typename Mode, typename Ch>
1.143 +mode_adapter<Mode, std::iostream>
1.144 +resolve(std::iostream& io)
1.145 +{ return mode_adapter<Mode, std::iostream>(wrap(io)); }
1.146 +
1.147 +template<typename Mode, typename Ch, std::size_t N>
1.148 +array_adapter<Mode, Ch> resolve(Ch (&array)[N])
1.149 +{ return array_adapter<Mode, Ch>(array); }
1.150 +
1.151 +template<typename Mode, typename Ch, typename Iter>
1.152 +range_adapter< Mode, boost::iterator_range<Iter> >
1.153 +resolve(const boost::iterator_range<Iter>& rng)
1.154 +{ return range_adapter< Mode, boost::iterator_range<Iter> >(rng); }
1.155 +
1.156 +# endif // # ifndef BOOST_IOSTREAMS_NO_STREAM_TEMPLATES //--------------------//
1.157 +#else // #ifndef BOOST_IOSTREAMS_BROKEN_OVERLOAD_RESOLUTION //----------------//
1.158 +
1.159 +template<typename Mode, typename Ch, typename T>
1.160 +struct resolve_traits {
1.161 + // Note: test for is_iterator_range must come before test for output
1.162 + // iterator.
1.163 + typedef typename
1.164 + iostreams::select< // Disambiguation for Tru64.
1.165 + is_std_io<T>,
1.166 + mode_adapter<Mode, T>,
1.167 + is_iterator_range<T>,
1.168 + range_adapter<Mode, T>,
1.169 + mpl::and_<
1.170 + is_dereferenceable<T>,
1.171 + boost::detail::is_incrementable<T>
1.172 + >,
1.173 + output_iterator_adapter<Mode, Ch, T>,
1.174 + is_array<T>,
1.175 + array_adapter<Mode, T>,
1.176 + else_,
1.177 + #if !BOOST_WORKAROUND(__BORLANDC__, < 0x600)
1.178 + const T&
1.179 + #else
1.180 + T
1.181 + #endif
1.182 + >::type type;
1.183 +};
1.184 +
1.185 +template<typename Mode, typename Ch, typename T>
1.186 +typename resolve_traits<Mode, Ch, T>::type
1.187 +resolve(const T& t, mpl::true_)
1.188 +{ // Bad overload resolution.
1.189 + typedef typename resolve_traits<Mode, Ch, T>::type return_type;
1.190 + return return_type(wrap(const_cast<T&>(t)));
1.191 +}
1.192 +
1.193 +template<typename Mode, typename Ch, typename T>
1.194 +typename resolve_traits<Mode, Ch, T>::type
1.195 +resolve(const T& t, mpl::false_)
1.196 +{
1.197 + typedef typename resolve_traits<Mode, Ch, T>::type return_type;
1.198 + return return_type(t);
1.199 +}
1.200 +
1.201 +template<typename Mode, typename Ch, typename T>
1.202 +typename resolve_traits<Mode, Ch, T>::type
1.203 +resolve(const T& t BOOST_IOSTREAMS_DISABLE_IF_STREAM(T))
1.204 +{ return resolve<Mode, Ch>(t, is_std_io<T>()); }
1.205 +
1.206 +# if !BOOST_WORKAROUND(__BORLANDC__, < 0x600) && \
1.207 + !BOOST_WORKAROUND(BOOST_MSVC, <= 1300) && \
1.208 + !defined(__GNUC__) // ---------------------------------------------------//
1.209 +
1.210 +template<typename Mode, typename Ch, typename T>
1.211 +typename resolve_traits<Mode, Ch, T>::type
1.212 +resolve(T& t, mpl::true_)
1.213 +{
1.214 + typedef typename resolve_traits<Mode, Ch, T>::type return_type;
1.215 + return return_type(wrap(t));
1.216 +}
1.217 +
1.218 +template<typename Mode, typename Ch, typename T>
1.219 +typename resolve_traits<Mode, Ch, T>::type
1.220 +resolve(T& t, mpl::false_)
1.221 +{
1.222 + typedef typename resolve_traits<Mode, Ch, T>::type return_type;
1.223 + return return_type(t);
1.224 +}
1.225 +
1.226 +template<typename Mode, typename Ch, typename T>
1.227 +typename resolve_traits<Mode, Ch, T>::type
1.228 +resolve(T& t BOOST_IOSTREAMS_ENABLE_IF_STREAM(T))
1.229 +{ return resolve<Mode, Ch>(t, is_std_io<T>()); }
1.230 +
1.231 +# endif // Borland 5.x, VC6-7.0 or GCC 2.9x //--------------------------------//
1.232 +#endif // #ifndef BOOST_IOSTREAMS_BROKEN_OVERLOAD_RESOLUTION //---------------//
1.233 +
1.234 +} } } // End namespaces detail, iostreams, boost.
1.235 +
1.236 +#include <boost/iostreams/detail/config/enable_warnings.hpp> // VC7.1 4224.
1.237 +
1.238 +#endif // BOOST_IOSTREAMS_DETAIL_RESOLVE_HPP_INCLUDED