| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | // | ||
| 2 | // Copyright (c) 2023 Vinnie Falco (vinnie.falco@gmail.com) | ||
| 3 | // | ||
| 4 | // Distributed under the Boost Software License, Version 1.0. (See accompanying | ||
| 5 | // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) | ||
| 6 | // | ||
| 7 | // Official repository: https://github.com/cppalliance/buffers | ||
| 8 | // | ||
| 9 | |||
| 10 | #ifndef BOOST_BUFFERS_RANGE_HPP | ||
| 11 | #define BOOST_BUFFERS_RANGE_HPP | ||
| 12 | |||
| 13 | #include <boost/buffers/detail/config.hpp> | ||
| 14 | #include <boost/buffers/const_buffer.hpp> | ||
| 15 | #include <boost/buffers/mutable_buffer.hpp> | ||
| 16 | #include <boost/buffers/type_traits.hpp> | ||
| 17 | #include <type_traits> | ||
| 18 | |||
| 19 | namespace boost { | ||
| 20 | namespace buffers { | ||
| 21 | namespace detail { | ||
| 22 | |||
| 23 | struct begin_impl | ||
| 24 | { | ||
| 25 | template<class MutableBuffer> | ||
| 26 | auto | ||
| 27 | 578925 | operator()( | |
| 28 | MutableBuffer const& b) const noexcept -> | ||
| 29 | typename std::enable_if< | ||
| 30 | std::is_convertible< | ||
| 31 | MutableBuffer const*, | ||
| 32 | mutable_buffer const*>::value, | ||
| 33 | mutable_buffer const*>::type | ||
| 34 | { | ||
| 35 | return static_cast< | ||
| 36 | mutable_buffer const*>( | ||
| 37 | 578925 | std::addressof(b)); | |
| 38 | } | ||
| 39 | |||
| 40 | template<class ConstBuffer> | ||
| 41 | auto | ||
| 42 | 295892 | operator()( | |
| 43 | ConstBuffer const& b) const noexcept -> | ||
| 44 | typename std::enable_if< | ||
| 45 | std::is_convertible< | ||
| 46 | ConstBuffer const*, | ||
| 47 | const_buffer const*>::value, | ||
| 48 | const_buffer const*>::type | ||
| 49 | { | ||
| 50 | return static_cast< | ||
| 51 | const_buffer const*>( | ||
| 52 | 295892 | std::addressof(b)); | |
| 53 | } | ||
| 54 | |||
| 55 | template<class BufferSequence> | ||
| 56 | auto | ||
| 57 | 32944 | operator()( | |
| 58 | BufferSequence& bs) const noexcept -> | ||
| 59 | typename std::enable_if< | ||
| 60 | ! std::is_convertible< | ||
| 61 | BufferSequence const*, | ||
| 62 | const_buffer const*>::value && | ||
| 63 | ! std::is_convertible< | ||
| 64 | BufferSequence const*, | ||
| 65 | mutable_buffer const*>::value, | ||
| 66 | decltype(bs.begin())>::type | ||
| 67 | { | ||
| 68 | 32944 | return bs.begin(); | |
| 69 | } | ||
| 70 | |||
| 71 | template<class BufferSequence> | ||
| 72 | auto | ||
| 73 | 2504884 | operator()( | |
| 74 | BufferSequence const& bs) const noexcept -> | ||
| 75 | typename std::enable_if< | ||
| 76 | ! std::is_convertible< | ||
| 77 | BufferSequence const*, | ||
| 78 | const_buffer const*>::value && | ||
| 79 | ! std::is_convertible< | ||
| 80 | BufferSequence const*, | ||
| 81 | mutable_buffer const*>::value, | ||
| 82 | decltype(bs.begin())>::type | ||
| 83 | { | ||
| 84 | 2504884 | return bs.begin(); | |
| 85 | } | ||
| 86 | }; | ||
| 87 | |||
| 88 | struct end_impl | ||
| 89 | { | ||
| 90 | template<class MutableBuffer> | ||
| 91 | auto | ||
| 92 | 578925 | operator()( | |
| 93 | MutableBuffer const& b) const noexcept -> | ||
| 94 | typename std::enable_if< | ||
| 95 | std::is_convertible< | ||
| 96 | MutableBuffer const*, | ||
| 97 | mutable_buffer const*>::value, | ||
| 98 | mutable_buffer const*>::type | ||
| 99 | { | ||
| 100 | return static_cast< | ||
| 101 | mutable_buffer const*>( | ||
| 102 | 578925 | std::addressof(b)) + 1; | |
| 103 | } | ||
| 104 | |||
| 105 | template<class ConstBuffer> | ||
| 106 | auto | ||
| 107 | 295892 | operator()( | |
| 108 | ConstBuffer const& b) const noexcept -> | ||
| 109 | typename std::enable_if< | ||
| 110 | std::is_convertible< | ||
| 111 | ConstBuffer const*, | ||
| 112 | const_buffer const*>::value, | ||
| 113 | const_buffer const*>::type | ||
| 114 | { | ||
| 115 | return static_cast< | ||
| 116 | const_buffer const*>( | ||
| 117 | 295892 | std::addressof(b)) + 1; | |
| 118 | } | ||
| 119 | |||
| 120 | template<class BufferSequence> | ||
| 121 | auto | ||
| 122 | 32944 | operator()( | |
| 123 | BufferSequence& bs) const noexcept -> | ||
| 124 | typename std::enable_if< | ||
| 125 | ! std::is_convertible< | ||
| 126 | BufferSequence const*, | ||
| 127 | const_buffer const*>::value && | ||
| 128 | ! std::is_convertible< | ||
| 129 | BufferSequence const*, | ||
| 130 | mutable_buffer const*>::value, | ||
| 131 | decltype(bs.end())>::type | ||
| 132 | { | ||
| 133 | 32944 | return bs.end(); | |
| 134 | } | ||
| 135 | |||
| 136 | template<class BufferSequence> | ||
| 137 | auto | ||
| 138 | 2496180 | operator()( | |
| 139 | BufferSequence const& bs) const noexcept -> | ||
| 140 | typename std::enable_if< | ||
| 141 | ! std::is_convertible< | ||
| 142 | BufferSequence const*, | ||
| 143 | const_buffer const*>::value && | ||
| 144 | ! std::is_convertible< | ||
| 145 | BufferSequence const*, | ||
| 146 | mutable_buffer const*>::value, | ||
| 147 | decltype(bs.end())>::type | ||
| 148 | { | ||
| 149 | 2496180 | return bs.end(); | |
| 150 | } | ||
| 151 | }; | ||
| 152 | |||
| 153 | } // detail | ||
| 154 | |||
| 155 | /** Return an iterator to the beginning of the buffer sequence. | ||
| 156 | */ | ||
| 157 | constexpr detail::begin_impl begin{}; | ||
| 158 | |||
| 159 | /** Return an iterator to the end of the buffer sequence. | ||
| 160 | */ | ||
| 161 | constexpr detail::end_impl end{}; | ||
| 162 | |||
| 163 | //------------------------------------------------ | ||
| 164 | |||
| 165 | namespace detail { | ||
| 166 | |||
| 167 | template<class T> | ||
| 168 | class iter_range | ||
| 169 | { | ||
| 170 | using begin_type = decltype( | ||
| 171 | buffers::begin(std::declval<T&>())); | ||
| 172 | using end_type = decltype( | ||
| 173 | buffers::end(std::declval<T&>())); | ||
| 174 | |||
| 175 | begin_type begin_; | ||
| 176 | end_type end_; | ||
| 177 | |||
| 178 | public: | ||
| 179 | 1217661 | iter_range(T& t) noexcept | |
| 180 | 1217661 | : begin_(buffers::begin(t)) | |
| 181 | 1217661 | , end_(buffers::end(t)) | |
| 182 | { | ||
| 183 | 1217661 | } | |
| 184 | |||
| 185 | begin_type | ||
| 186 | 1217661 | begin() const noexcept | |
| 187 | { | ||
| 188 | 1217661 | return begin_; | |
| 189 | } | ||
| 190 | |||
| 191 | end_type | ||
| 192 | 1217661 | end() const noexcept | |
| 193 | { | ||
| 194 | 1217661 | return end_; | |
| 195 | } | ||
| 196 | }; | ||
| 197 | |||
| 198 | struct range_impl | ||
| 199 | { | ||
| 200 | template<class BufferSequence> | ||
| 201 | auto | ||
| 202 | 892875 | operator()( | |
| 203 | BufferSequence&& bs) const noexcept -> | ||
| 204 | iter_range<typename | ||
| 205 | std::remove_reference< | ||
| 206 | BufferSequence>::type> | ||
| 207 | { | ||
| 208 | 892875 | return { bs }; | |
| 209 | } | ||
| 210 | }; | ||
| 211 | |||
| 212 | } // detail | ||
| 213 | |||
| 214 | /** Return a range representing the buffer sequence. | ||
| 215 | */ | ||
| 216 | constexpr detail::range_impl range{}; | ||
| 217 | |||
| 218 | } // buffers | ||
| 219 | } // boost | ||
| 220 | |||
| 221 | #endif | ||
| 222 |