| 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_MUTABLE_BUFFER_SUBSPAN_HPP | ||
| 11 | #define BOOST_BUFFERS_MUTABLE_BUFFER_SUBSPAN_HPP | ||
| 12 | |||
| 13 | #include <boost/buffers/detail/config.hpp> | ||
| 14 | #include <boost/buffers/mutable_buffer.hpp> | ||
| 15 | |||
| 16 | namespace boost { | ||
| 17 | namespace buffers { | ||
| 18 | |||
| 19 | class mutable_buffer_span; | ||
| 20 | |||
| 21 | /** Holds a span of buffers whose contents are modifiable. | ||
| 22 | |||
| 23 | Objects of this type meet the requirements | ||
| 24 | of <em>MutableBufferSequence</em>. | ||
| 25 | */ | ||
| 26 | class mutable_buffer_subspan | ||
| 27 | { | ||
| 28 | mutable_buffer const* p_ = nullptr; | ||
| 29 | std::size_t n_ = 0; | ||
| 30 | std::size_t p0_ = 0; | ||
| 31 | std::size_t p1_ = 0; | ||
| 32 | |||
| 33 | friend class mutable_buffer_span; | ||
| 34 | |||
| 35 | inline | ||
| 36 | mutable_buffer_subspan( | ||
| 37 | mutable_buffer const* p, | ||
| 38 | std::size_t n, | ||
| 39 | std::size_t p0, | ||
| 40 | std::size_t p1) noexcept; | ||
| 41 | |||
| 42 | public: | ||
| 43 | /** The type of buffer. | ||
| 44 | */ | ||
| 45 | using value_type = mutable_buffer; | ||
| 46 | |||
| 47 | /** The type of iterators returned. | ||
| 48 | */ | ||
| 49 | class const_iterator; | ||
| 50 | |||
| 51 | /** Constructor. | ||
| 52 | */ | ||
| 53 | mutable_buffer_subspan() = default; | ||
| 54 | |||
| 55 | /** Constructor. | ||
| 56 | */ | ||
| 57 | BOOST_BUFFERS_DECL | ||
| 58 | mutable_buffer_subspan( | ||
| 59 | mutable_buffer const* p, | ||
| 60 | std::size_t n) noexcept; | ||
| 61 | |||
| 62 | /** Constructor. | ||
| 63 | */ | ||
| 64 | inline | ||
| 65 | explicit | ||
| 66 | mutable_buffer_subspan( | ||
| 67 | mutable_buffer_span const& s) noexcept; | ||
| 68 | |||
| 69 | /** Constructor. | ||
| 70 | */ | ||
| 71 | mutable_buffer_subspan( | ||
| 72 | mutable_buffer_subspan const&) = default; | ||
| 73 | |||
| 74 | /** Assignment. | ||
| 75 | */ | ||
| 76 | mutable_buffer_subspan& operator=( | ||
| 77 | mutable_buffer_subspan const&) = default; | ||
| 78 | |||
| 79 | /** Return an iterator to the beginning. | ||
| 80 | */ | ||
| 81 | inline | ||
| 82 | const_iterator | ||
| 83 | begin() const noexcept; | ||
| 84 | |||
| 85 | /** Return an iterator to the end. | ||
| 86 | */ | ||
| 87 | inline | ||
| 88 | const_iterator | ||
| 89 | end() const noexcept; | ||
| 90 | |||
| 91 | friend | ||
| 92 | mutable_buffer_subspan | ||
| 93 | 358 | tag_invoke( | |
| 94 | prefix_tag const&, | ||
| 95 | mutable_buffer_subspan const& s, | ||
| 96 | std::size_t n) noexcept | ||
| 97 | { | ||
| 98 | 358 | return s.prefix_impl(n); | |
| 99 | } | ||
| 100 | |||
| 101 | friend | ||
| 102 | mutable_buffer_subspan | ||
| 103 | 358 | tag_invoke( | |
| 104 | suffix_tag const&, | ||
| 105 | mutable_buffer_subspan const& s, | ||
| 106 | std::size_t n) noexcept | ||
| 107 | { | ||
| 108 | 358 | return s.suffix_impl(n); | |
| 109 | } | ||
| 110 | |||
| 111 | private: | ||
| 112 | BOOST_BUFFERS_DECL | ||
| 113 | mutable_buffer_subspan | ||
| 114 | prefix_impl(std::size_t n) const noexcept; | ||
| 115 | |||
| 116 | BOOST_BUFFERS_DECL | ||
| 117 | mutable_buffer_subspan | ||
| 118 | suffix_impl(std::size_t n) const noexcept; | ||
| 119 | }; | ||
| 120 | |||
| 121 | } // buffers | ||
| 122 | } // boost | ||
| 123 | |||
| 124 | #include <boost/buffers/impl/mutable_buffer_subspan.hpp> | ||
| 125 | |||
| 126 | #endif | ||
| 127 |