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annotate DEPENDENCIES/generic/include/boost/iostreams/categories.hpp @ 133:4acb5d8d80b6 tip

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Don't fail environmental check if README.md exists (but .txt and no-suffix don't)
author Chris Cannam
date Tue, 30 Jul 2019 12:25:44 +0100
parents 2665513ce2d3
children
rev   line source
Chris@16 1 // (C) Copyright 2008 CodeRage, LLC (turkanis at coderage dot com)
Chris@16 2 // (C) Copyright 2003-2007 Jonathan Turkanis
Chris@16 3 // Distributed under the Boost Software License, Version 1.0. (See accompanying
Chris@16 4 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt.)
Chris@16 5
Chris@16 6 // See http://www.boost.org/libs/iostreams for documentation.
Chris@16 7
Chris@16 8 // Contains category and mode tags for classifying filters, devices and
Chris@16 9 // standard stream and stream buffers types.
Chris@16 10
Chris@16 11 #ifndef BOOST_IOSTREAMS_CATEGORIES_HPP_INCLUDED
Chris@16 12 #define BOOST_IOSTREAMS_CATEGORIES_HPP_INCLUDED
Chris@16 13
Chris@16 14 #if defined(_MSC_VER) && (_MSC_VER >= 1020)
Chris@16 15 # pragma once
Chris@16 16 #endif
Chris@16 17
Chris@16 18 namespace boost { namespace iostreams {
Chris@16 19
Chris@16 20 //------------------Tags for dispatch according to i/o mode-------------------//
Chris@16 21
Chris@16 22 struct any_tag { };
Chris@16 23 namespace detail { struct two_sequence : virtual any_tag { }; }
Chris@16 24 namespace detail { struct random_access : virtual any_tag { }; }
Chris@16 25 namespace detail { struct one_head : virtual any_tag { }; }
Chris@16 26 namespace detail { struct two_head : virtual any_tag { }; }
Chris@16 27 struct input : virtual any_tag { };
Chris@16 28 struct output : virtual any_tag { };
Chris@16 29 struct bidirectional : virtual input, virtual output, detail::two_sequence { };
Chris@16 30 struct dual_use : virtual input, virtual output { }; // Pseudo-mode.
Chris@16 31 struct input_seekable : virtual input, virtual detail::random_access { };
Chris@16 32 struct output_seekable : virtual output, virtual detail::random_access { };
Chris@16 33 struct seekable
Chris@16 34 : virtual input_seekable,
Chris@16 35 virtual output_seekable,
Chris@16 36 detail::one_head
Chris@16 37 { };
Chris@16 38 struct dual_seekable
Chris@16 39 : virtual input_seekable,
Chris@16 40 virtual output_seekable,
Chris@16 41 detail::two_head
Chris@16 42 { };
Chris@16 43 struct bidirectional_seekable
Chris@16 44 : input_seekable, output_seekable,
Chris@16 45 bidirectional, detail::two_head
Chris@16 46 { };
Chris@16 47
Chris@16 48 //------------------Tags for use as i/o categories----------------------------//
Chris@16 49
Chris@16 50 struct device_tag : virtual any_tag { };
Chris@16 51 struct filter_tag : virtual any_tag { };
Chris@16 52
Chris@16 53 //
Chris@16 54 // Tags for optional behavior.
Chris@16 55 //
Chris@16 56
Chris@16 57 struct peekable_tag : virtual any_tag { }; // Devices.
Chris@16 58 struct closable_tag : virtual any_tag { };
Chris@16 59 struct flushable_tag : virtual any_tag { };
Chris@16 60 struct localizable_tag : virtual any_tag { };
Chris@16 61 struct optimally_buffered_tag : virtual any_tag { };
Chris@16 62 struct direct_tag : virtual any_tag { }; // Devices.
Chris@16 63 struct multichar_tag : virtual any_tag { }; // Filters.
Chris@16 64
Chris@16 65 struct source_tag : device_tag, input { };
Chris@16 66 struct sink_tag : device_tag, output { };
Chris@16 67 struct bidirectional_device_tag : device_tag, bidirectional { };
Chris@16 68 struct seekable_device_tag : virtual device_tag, seekable { };
Chris@16 69
Chris@16 70 struct input_filter_tag : filter_tag, input { };
Chris@16 71 struct output_filter_tag : filter_tag, output { };
Chris@16 72 struct bidirectional_filter_tag : filter_tag, bidirectional { };
Chris@16 73 struct seekable_filter_tag : filter_tag, seekable { };
Chris@16 74 struct dual_use_filter_tag : filter_tag, dual_use { };
Chris@16 75
Chris@16 76 struct multichar_input_filter_tag
Chris@16 77 : multichar_tag,
Chris@16 78 input_filter_tag
Chris@16 79 { };
Chris@16 80 struct multichar_output_filter_tag
Chris@16 81 : multichar_tag,
Chris@16 82 output_filter_tag
Chris@16 83 { };
Chris@16 84 struct multichar_bidirectional_filter_tag
Chris@16 85 : multichar_tag,
Chris@16 86 bidirectional_filter_tag
Chris@16 87 { };
Chris@16 88 struct multichar_seekable_filter_tag
Chris@16 89 : multichar_tag,
Chris@16 90 seekable_filter_tag
Chris@16 91 { };
Chris@16 92 struct multichar_dual_use_filter_tag
Chris@16 93 : multichar_tag,
Chris@16 94 dual_use_filter_tag
Chris@16 95 { };
Chris@16 96
Chris@16 97 //
Chris@16 98 // Tags for standard streams and streambufs.
Chris@16 99 //
Chris@16 100
Chris@16 101 struct std_io_tag : virtual localizable_tag { };
Chris@16 102 struct istream_tag
Chris@16 103 : virtual device_tag,
Chris@16 104 virtual peekable_tag,
Chris@16 105 virtual std_io_tag
Chris@16 106 { };
Chris@16 107 struct ostream_tag
Chris@16 108 : virtual device_tag,
Chris@16 109 virtual std_io_tag
Chris@16 110 { };
Chris@16 111 struct iostream_tag
Chris@16 112 : istream_tag,
Chris@16 113 ostream_tag
Chris@16 114 { };
Chris@16 115 struct streambuf_tag
Chris@16 116 : device_tag,
Chris@16 117 peekable_tag,
Chris@16 118 std_io_tag
Chris@16 119 { };
Chris@16 120 struct ifstream_tag
Chris@16 121 : input_seekable,
Chris@16 122 closable_tag,
Chris@16 123 istream_tag
Chris@16 124 { };
Chris@16 125 struct ofstream_tag
Chris@16 126 : output_seekable,
Chris@16 127 closable_tag,
Chris@16 128 ostream_tag
Chris@16 129 { };
Chris@16 130 struct fstream_tag
Chris@16 131 : seekable,
Chris@16 132 closable_tag,
Chris@16 133 iostream_tag
Chris@16 134 { };
Chris@16 135 struct filebuf_tag
Chris@16 136 : seekable,
Chris@16 137 closable_tag,
Chris@16 138 streambuf_tag
Chris@16 139 { };
Chris@16 140 struct istringstream_tag
Chris@16 141 : input_seekable,
Chris@16 142 istream_tag
Chris@16 143 { };
Chris@16 144 struct ostringstream_tag
Chris@16 145 : output_seekable,
Chris@16 146 ostream_tag
Chris@16 147 { };
Chris@16 148 struct stringstream_tag
Chris@16 149 : dual_seekable,
Chris@16 150 iostream_tag
Chris@16 151 { };
Chris@16 152 struct stringbuf_tag
Chris@16 153 : dual_seekable,
Chris@16 154 streambuf_tag
Chris@16 155 { };
Chris@16 156 struct generic_istream_tag
Chris@16 157 : input_seekable,
Chris@16 158 istream_tag
Chris@16 159 { };
Chris@16 160 struct generic_ostream_tag
Chris@16 161 : output_seekable,
Chris@16 162 ostream_tag
Chris@16 163 { };
Chris@16 164 struct generic_iostream_tag
Chris@16 165 : seekable,
Chris@16 166 iostream_tag
Chris@16 167 { };
Chris@16 168 struct generic_streambuf_tag
Chris@16 169 : seekable,
Chris@16 170 streambuf_tag
Chris@16 171 { };
Chris@16 172
Chris@16 173 } } // End namespaces iostreams, boost.
Chris@16 174
Chris@16 175 #endif // #ifndef BOOST_IOSTREAMS_CATEGORIES_HPP_INCLUDED