// (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_DETAIL_RESOLVE_HPP_INCLUDED | |
#define BOOST_IOSTREAMS_DETAIL_RESOLVE_HPP_INCLUDED | |
#if defined(_MSC_VER) && (_MSC_VER >= 1020) | |
# pragma once | |
#endif | |
#include <boost/config.hpp> // partial spec, put size_t in std. | |
#include <cstddef> // std::size_t. | |
#include <boost/detail/is_incrementable.hpp> | |
#include <boost/detail/workaround.hpp> | |
#include <boost/iostreams/detail/adapter/mode_adapter.hpp> | |
#include <boost/iostreams/detail/adapter/output_iterator_adapter.hpp> | |
#include <boost/iostreams/detail/adapter/range_adapter.hpp> | |
#include <boost/iostreams/detail/config/gcc.hpp> | |
#include <boost/iostreams/detail/config/overload_resolution.hpp> | |
#include <boost/iostreams/detail/config/wide_streams.hpp> | |
#include <boost/iostreams/detail/enable_if_stream.hpp> | |
#include <boost/iostreams/detail/is_dereferenceable.hpp> | |
#include <boost/iostreams/detail/is_iterator_range.hpp> | |
#include <boost/iostreams/detail/select.hpp> | |
#include <boost/iostreams/detail/wrap_unwrap.hpp> | |
#include <boost/iostreams/device/array.hpp> | |
#include <boost/iostreams/traits.hpp> | |
#include <boost/mpl/and.hpp> | |
#include <boost/mpl/bool.hpp> // true_. | |
#include <boost/mpl/if.hpp> | |
#if !BOOST_WORKAROUND(BOOST_MSVC, <= 1300) | |
# include <boost/range/iterator_range.hpp> | |
#endif // #if BOOST_WORKAROUND(BOOST_MSVC, <= 1300) | |
#include <boost/type_traits/is_array.hpp> | |
// Must come last. | |
#include <boost/iostreams/detail/config/disable_warnings.hpp> // VC7.1 C4224. | |
namespace boost { namespace iostreams { namespace detail { | |
//------------------Definition of resolve-------------------------------------// | |
#ifndef BOOST_IOSTREAMS_BROKEN_OVERLOAD_RESOLUTION //-------------------------// | |
template<typename Mode, typename Ch, typename T> | |
struct resolve_traits { | |
typedef typename | |
mpl::if_< | |
boost::detail::is_incrementable<T>, | |
output_iterator_adapter<Mode, Ch, T>, | |
const T& | |
>::type type; | |
}; | |
# ifndef BOOST_IOSTREAMS_NO_STREAM_TEMPLATES //-------------------------------// | |
template<typename Mode, typename Ch, typename T> | |
typename resolve_traits<Mode, Ch, T>::type | |
resolve( const T& t | |
BOOST_IOSTREAMS_DISABLE_IF_STREAM(T) | |
// I suspect that the compilers which require this workaround may | |
// be correct, but I'm not sure why :( | |
#if BOOST_WORKAROUND(BOOST_INTEL_CXX_VERSION, BOOST_TESTED_AT(810)) ||\ | |
BOOST_WORKAROUND(__MWERKS__, BOOST_TESTED_AT(0x3205)) || \ | |
BOOST_WORKAROUND(BOOST_IOSTREAMS_GCC, BOOST_TESTED_AT(400)) ||\ | |
BOOST_WORKAROUND(__IBMCPP__, BOOST_TESTED_AT(1110)) | |
/**/ | |
, typename disable_if< is_iterator_range<T> >::type* = 0 | |
#endif | |
) | |
{ | |
typedef typename resolve_traits<Mode, Ch, T>::type return_type; | |
return return_type(t); | |
} | |
template<typename Mode, typename Ch, typename Tr> | |
mode_adapter< Mode, std::basic_streambuf<Ch, Tr> > | |
resolve(std::basic_streambuf<Ch, Tr>& sb) | |
{ return mode_adapter< Mode, std::basic_streambuf<Ch, Tr> >(wrap(sb)); } | |
template<typename Mode, typename Ch, typename Tr> | |
mode_adapter< Mode, std::basic_istream<Ch, Tr> > | |
resolve(std::basic_istream<Ch, Tr>& is) | |
{ return mode_adapter< Mode, std::basic_istream<Ch, Tr> >(wrap(is)); } | |
template<typename Mode, typename Ch, typename Tr> | |
mode_adapter< Mode, std::basic_ostream<Ch, Tr> > | |
resolve(std::basic_ostream<Ch, Tr>& os) | |
{ return mode_adapter< Mode, std::basic_ostream<Ch, Tr> >(wrap(os)); } | |
template<typename Mode, typename Ch, typename Tr> | |
mode_adapter< Mode, std::basic_iostream<Ch, Tr> > | |
resolve(std::basic_iostream<Ch, Tr>& io) | |
{ return mode_adapter< Mode, std::basic_iostream<Ch, Tr> >(wrap(io)); } | |
template<typename Mode, typename Ch, std::size_t N> | |
array_adapter<Mode, Ch> resolve(Ch (&array)[N]) | |
{ return array_adapter<Mode, Ch>(array); } | |
# if !BOOST_WORKAROUND(BOOST_MSVC, <= 1300) | |
template<typename Mode, typename Ch, typename Iter> | |
range_adapter< Mode, boost::iterator_range<Iter> > | |
resolve(const boost::iterator_range<Iter>& rng) | |
{ return range_adapter< Mode, boost::iterator_range<Iter> >(rng); } | |
# endif // #if BOOST_WORKAROUND(BOOST_MSVC, <= 1300) | |
# else // # ifndef BOOST_IOSTREAMS_NO_STREAM_TEMPLATES //---------------------// | |
template<typename Mode, typename Ch, typename T> | |
typename resolve_traits<Mode, Ch, T>::type | |
resolve( const T& t | |
BOOST_IOSTREAMS_DISABLE_IF_STREAM(T) | |
#if defined(__GNUC__) | |
, typename disable_if< is_iterator_range<T> >::type* = 0 | |
#endif | |
) | |
{ | |
typedef typename resolve_traits<Mode, Ch, T>::type return_type; | |
return return_type(t); | |
} | |
template<typename Mode, typename Ch> | |
mode_adapter<Mode, std::streambuf> | |
resolve(std::streambuf& sb) | |
{ return mode_adapter<Mode, std::streambuf>(wrap(sb)); } | |
template<typename Mode, typename Ch> | |
mode_adapter<Mode, std::istream> | |
resolve(std::istream& is) | |
{ return mode_adapter<Mode, std::istream>(wrap(is)); } | |
template<typename Mode, typename Ch> | |
mode_adapter<Mode, std::ostream> | |
resolve(std::ostream& os) | |
{ return mode_adapter<Mode, std::ostream>(wrap(os)); } | |
template<typename Mode, typename Ch> | |
mode_adapter<Mode, std::iostream> | |
resolve(std::iostream& io) | |
{ return mode_adapter<Mode, std::iostream>(wrap(io)); } | |
template<typename Mode, typename Ch, std::size_t N> | |
array_adapter<Mode, Ch> resolve(Ch (&array)[N]) | |
{ return array_adapter<Mode, Ch>(array); } | |
template<typename Mode, typename Ch, typename Iter> | |
range_adapter< Mode, boost::iterator_range<Iter> > | |
resolve(const boost::iterator_range<Iter>& rng) | |
{ return range_adapter< Mode, boost::iterator_range<Iter> >(rng); } | |
# endif // # ifndef BOOST_IOSTREAMS_NO_STREAM_TEMPLATES //--------------------// | |
#else // #ifndef BOOST_IOSTREAMS_BROKEN_OVERLOAD_RESOLUTION //----------------// | |
template<typename Mode, typename Ch, typename T> | |
struct resolve_traits { | |
// Note: test for is_iterator_range must come before test for output | |
// iterator. | |
typedef typename | |
iostreams::select< // Disambiguation for Tru64. | |
is_std_io<T>, | |
mode_adapter<Mode, T>, | |
is_iterator_range<T>, | |
range_adapter<Mode, T>, | |
is_dereferenceable<T>, | |
output_iterator_adapter<Mode, Ch, T>, | |
is_array<T>, | |
array_adapter<Mode, T>, | |
else_, | |
#if !BOOST_WORKAROUND(__BORLANDC__, < 0x600) | |
const T& | |
#else | |
T | |
#endif | |
>::type type; | |
}; | |
template<typename Mode, typename Ch, typename T> | |
typename resolve_traits<Mode, Ch, T>::type | |
resolve(const T& t, mpl::true_) | |
{ // Bad overload resolution. | |
typedef typename resolve_traits<Mode, Ch, T>::type return_type; | |
return return_type(wrap(const_cast<T&>(t))); | |
} | |
template<typename Mode, typename Ch, typename T> | |
typename resolve_traits<Mode, Ch, T>::type | |
resolve(const T& t, mpl::false_) | |
{ | |
typedef typename resolve_traits<Mode, Ch, T>::type return_type; | |
return return_type(t); | |
} | |
template<typename Mode, typename Ch, typename T> | |
typename resolve_traits<Mode, Ch, T>::type | |
resolve(const T& t BOOST_IOSTREAMS_DISABLE_IF_STREAM(T)) | |
{ return resolve<Mode, Ch>(t, is_std_io<T>()); } | |
# if !BOOST_WORKAROUND(__BORLANDC__, < 0x600) && \ | |
!BOOST_WORKAROUND(BOOST_MSVC, <= 1300) && \ | |
!defined(__GNUC__) // ---------------------------------------------------// | |
template<typename Mode, typename Ch, typename T> | |
typename resolve_traits<Mode, Ch, T>::type | |
resolve(T& t, mpl::true_) | |
{ | |
typedef typename resolve_traits<Mode, Ch, T>::type return_type; | |
return return_type(wrap(t)); | |
} | |
template<typename Mode, typename Ch, typename T> | |
typename resolve_traits<Mode, Ch, T>::type | |
resolve(T& t, mpl::false_) | |
{ | |
typedef typename resolve_traits<Mode, Ch, T>::type return_type; | |
return return_type(t); | |
} | |
template<typename Mode, typename Ch, typename T> | |
typename resolve_traits<Mode, Ch, T>::type | |
resolve(T& t BOOST_IOSTREAMS_ENABLE_IF_STREAM(T)) | |
{ return resolve<Mode, Ch>(t, is_std_io<T>()); } | |
# endif // Borland 5.x, VC6-7.0 or GCC 2.9x //--------------------------------// | |
#endif // #ifndef BOOST_IOSTREAMS_BROKEN_OVERLOAD_RESOLUTION //---------------// | |
} } } // End namespaces detail, iostreams, boost. | |
#include <boost/iostreams/detail/config/enable_warnings.hpp> // VC7.1 4224. | |
#endif // BOOST_IOSTREAMS_DETAIL_RESOLVE_HPP_INCLUDED |