// (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_CONCEPTS_HPP_INCLUDED | |
#define BOOST_IOSTREAMS_CONCEPTS_HPP_INCLUDED | |
#if defined(_MSC_VER) && (_MSC_VER >= 1020) | |
# pragma once | |
#endif | |
#include <boost/config.hpp> // BOOST_MSVC | |
#include <boost/detail/workaround.hpp> | |
#include <boost/iostreams/categories.hpp> | |
#include <boost/iostreams/detail/default_arg.hpp> | |
#include <boost/iostreams/detail/ios.hpp> // openmode. | |
#include <boost/iostreams/positioning.hpp> | |
#include <boost/static_assert.hpp> | |
#include <boost/type_traits/is_convertible.hpp> | |
namespace boost { namespace iostreams { | |
//--------------Definitions of helper templates for device concepts-----------// | |
template<typename Mode, typename Ch = BOOST_IOSTREAMS_DEFAULT_ARG(char)> | |
struct device { | |
typedef Ch char_type; | |
struct category | |
: Mode, | |
device_tag, | |
closable_tag, | |
localizable_tag | |
{ }; | |
void close() | |
{ | |
using namespace detail; | |
BOOST_STATIC_ASSERT((!is_convertible<Mode, two_sequence>::value)); | |
} | |
void close(BOOST_IOS::openmode) | |
{ | |
using namespace detail; | |
BOOST_STATIC_ASSERT((is_convertible<Mode, two_sequence>::value)); | |
} | |
template<typename Locale> | |
void imbue(const Locale&) { } | |
}; | |
template<typename Mode, typename Ch = BOOST_IOSTREAMS_DEFAULT_ARG(wchar_t)> | |
struct wdevice : device<Mode, Ch> { }; | |
typedef device<input> source; | |
typedef wdevice<input> wsource; | |
typedef device<output> sink; | |
typedef wdevice<output> wsink; | |
//--------------Definitions of helper templates for simple filter concepts----// | |
template<typename Mode, typename Ch = BOOST_IOSTREAMS_DEFAULT_ARG(char)> | |
struct filter { | |
typedef Ch char_type; | |
struct category | |
: Mode, | |
filter_tag, | |
closable_tag, | |
localizable_tag | |
{ }; | |
template<typename Device> | |
void close(Device&) | |
{ | |
using namespace detail; | |
BOOST_STATIC_ASSERT((!is_convertible<Mode, two_sequence>::value)); | |
BOOST_STATIC_ASSERT((!is_convertible<Mode, dual_use>::value)); | |
} | |
template<typename Device> | |
void close(Device&, BOOST_IOS::openmode) | |
{ | |
using namespace detail; | |
BOOST_STATIC_ASSERT( | |
(is_convertible<Mode, two_sequence>::value) || | |
(is_convertible<Mode, dual_use>::value) | |
); | |
} | |
template<typename Locale> | |
void imbue(const Locale&) { } | |
}; | |
template<typename Mode, typename Ch = BOOST_IOSTREAMS_DEFAULT_ARG(wchar_t)> | |
struct wfilter : filter<Mode, Ch> { }; | |
typedef filter<input> input_filter; | |
typedef wfilter<input> input_wfilter; | |
typedef filter<output> output_filter; | |
typedef wfilter<output> output_wfilter; | |
typedef filter<seekable> seekable_filter; | |
typedef wfilter<seekable> seekable_wfilter; | |
typedef filter<dual_use> dual_use_filter; | |
typedef wfilter<dual_use> dual_use_wfilter; | |
//------Definitions of helper templates for multi-character filter cncepts----// | |
template<typename Mode, typename Ch = char> | |
struct multichar_filter : filter<Mode, Ch> { | |
struct category : filter<Mode, Ch>::category, multichar_tag { }; | |
}; | |
template<typename Mode, typename Ch = wchar_t> | |
struct multichar_wfilter : multichar_filter<Mode, Ch> { }; | |
typedef multichar_filter<input> multichar_input_filter; | |
typedef multichar_wfilter<input> multichar_input_wfilter; | |
typedef multichar_filter<output> multichar_output_filter; | |
typedef multichar_wfilter<output> multichar_output_wfilter; | |
typedef multichar_filter<dual_use> multichar_dual_use_filter; | |
typedef multichar_wfilter<dual_use> multichar_dual_use_wfilter; | |
//----------------------------------------------------------------------------// | |
} } // End namespaces iostreams, boost. | |
#endif // #ifndef BOOST_IOSTREAMS_CONCEPTS_HPP_INCLUDED |