Added boost header
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Christophe Riccio
175
test/external/boost/iostreams/categories.hpp
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175
test/external/boost/iostreams/categories.hpp
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// (C) Copyright 2008 CodeRage, LLC (turkanis at coderage dot com)
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// (C) Copyright 2003-2007 Jonathan Turkanis
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt.)
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// See http://www.boost.org/libs/iostreams for documentation.
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// Contains category and mode tags for classifying filters, devices and
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// standard stream and stream buffers types.
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#ifndef BOOST_IOSTREAMS_CATEGORIES_HPP_INCLUDED
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#define BOOST_IOSTREAMS_CATEGORIES_HPP_INCLUDED
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#if defined(_MSC_VER) && (_MSC_VER >= 1020)
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# pragma once
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#endif
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namespace boost { namespace iostreams {
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//------------------Tags for dispatch according to i/o mode-------------------//
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struct any_tag { };
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namespace detail { struct two_sequence : virtual any_tag { }; }
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namespace detail { struct random_access : virtual any_tag { }; }
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namespace detail { struct one_head : virtual any_tag { }; }
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namespace detail { struct two_head : virtual any_tag { }; }
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struct input : virtual any_tag { };
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struct output : virtual any_tag { };
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struct bidirectional : virtual input, virtual output, detail::two_sequence { };
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struct dual_use : virtual input, virtual output { }; // Pseudo-mode.
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struct input_seekable : virtual input, virtual detail::random_access { };
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struct output_seekable : virtual output, virtual detail::random_access { };
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struct seekable
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: virtual input_seekable,
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virtual output_seekable,
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detail::one_head
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{ };
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struct dual_seekable
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: virtual input_seekable,
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virtual output_seekable,
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detail::two_head
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{ };
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struct bidirectional_seekable
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: input_seekable, output_seekable,
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bidirectional, detail::two_head
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{ };
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//------------------Tags for use as i/o categories----------------------------//
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struct device_tag : virtual any_tag { };
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struct filter_tag : virtual any_tag { };
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//
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// Tags for optional behavior.
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//
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struct peekable_tag : virtual any_tag { }; // Devices.
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struct closable_tag : virtual any_tag { };
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struct flushable_tag : virtual any_tag { };
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struct localizable_tag : virtual any_tag { };
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struct optimally_buffered_tag : virtual any_tag { };
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struct direct_tag : virtual any_tag { }; // Devices.
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struct multichar_tag : virtual any_tag { }; // Filters.
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struct source_tag : device_tag, input { };
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struct sink_tag : device_tag, output { };
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struct bidirectional_device_tag : device_tag, bidirectional { };
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struct seekable_device_tag : virtual device_tag, seekable { };
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struct input_filter_tag : filter_tag, input { };
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struct output_filter_tag : filter_tag, output { };
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struct bidirectional_filter_tag : filter_tag, bidirectional { };
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struct seekable_filter_tag : filter_tag, seekable { };
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struct dual_use_filter_tag : filter_tag, dual_use { };
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struct multichar_input_filter_tag
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: multichar_tag,
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input_filter_tag
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{ };
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struct multichar_output_filter_tag
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: multichar_tag,
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output_filter_tag
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{ };
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struct multichar_bidirectional_filter_tag
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: multichar_tag,
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bidirectional_filter_tag
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{ };
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struct multichar_seekable_filter_tag
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: multichar_tag,
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seekable_filter_tag
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{ };
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struct multichar_dual_use_filter_tag
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: multichar_tag,
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dual_use_filter_tag
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{ };
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//
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// Tags for standard streams and streambufs.
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//
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struct std_io_tag : virtual localizable_tag { };
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struct istream_tag
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: virtual device_tag,
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virtual peekable_tag,
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virtual std_io_tag
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{ };
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struct ostream_tag
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: virtual device_tag,
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virtual std_io_tag
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{ };
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struct iostream_tag
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: istream_tag,
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ostream_tag
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{ };
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struct streambuf_tag
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: device_tag,
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peekable_tag,
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std_io_tag
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{ };
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struct ifstream_tag
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: input_seekable,
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closable_tag,
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istream_tag
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{ };
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struct ofstream_tag
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: output_seekable,
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closable_tag,
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ostream_tag
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{ };
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struct fstream_tag
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: seekable,
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closable_tag,
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iostream_tag
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{ };
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struct filebuf_tag
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: seekable,
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closable_tag,
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streambuf_tag
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{ };
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struct istringstream_tag
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: input_seekable,
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istream_tag
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{ };
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struct ostringstream_tag
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: output_seekable,
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ostream_tag
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{ };
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struct stringstream_tag
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: dual_seekable,
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iostream_tag
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{ };
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struct stringbuf_tag
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: dual_seekable,
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streambuf_tag
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{ };
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struct generic_istream_tag
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: input_seekable,
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istream_tag
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{ };
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struct generic_ostream_tag
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: output_seekable,
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ostream_tag
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{ };
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struct generic_iostream_tag
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: seekable,
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iostream_tag
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{ };
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struct generic_streambuf_tag
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: seekable,
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streambuf_tag
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{ };
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} } // End namespaces iostreams, boost.
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#endif // #ifndef BOOST_IOSTREAMS_CATEGORIES_HPP_INCLUDED
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