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|---|---|---|---|
| 1 | // | ||
| 2 | // Copyright (c) 2019 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/http_proto | ||
| 8 | // | ||
| 9 | |||
| 10 | #ifndef BOOST_HTTP_PROTO_IMPL_SERIALIZER_HPP | ||
| 11 | #define BOOST_HTTP_PROTO_IMPL_SERIALIZER_HPP | ||
| 12 | |||
| 13 | #include <boost/http_proto/detail/except.hpp> | ||
| 14 | #include <iterator> | ||
| 15 | #include <new> | ||
| 16 | #include <utility> | ||
| 17 | |||
| 18 | namespace boost { | ||
| 19 | namespace http_proto { | ||
| 20 | |||
| 21 | class serializer:: | ||
| 22 | output | ||
| 23 | { | ||
| 24 | std::size_t n_ = 0; | ||
| 25 | const_buffer const* p_ = nullptr; | ||
| 26 | |||
| 27 | friend class serializer; | ||
| 28 | |||
| 29 | 12 | output( | |
| 30 | const_buffer const* p, | ||
| 31 | std::size_t n) noexcept | ||
| 32 | 12 | : n_(n) | |
| 33 | 12 | , p_(p) | |
| 34 | { | ||
| 35 | 12 | } | |
| 36 | |||
| 37 | public: | ||
| 38 | using iterator = const_buffer const*; | ||
| 39 | using const_iterator = iterator; | ||
| 40 | using value_type = const_buffer; | ||
| 41 | using reference = const_buffer; | ||
| 42 | using const_reference = const_buffer; | ||
| 43 | using size_type = std::size_t; | ||
| 44 | using difference_type = std::ptrdiff_t; | ||
| 45 | |||
| 46 | output() = default; | ||
| 47 | output( | ||
| 48 | output const&) = default; | ||
| 49 | output& operator=( | ||
| 50 | output const&) = default; | ||
| 51 | |||
| 52 | iterator | ||
| 53 | 23 | begin() const noexcept | |
| 54 | { | ||
| 55 | 23 | return p_; | |
| 56 | } | ||
| 57 | |||
| 58 | iterator | ||
| 59 | 23 | end() const noexcept | |
| 60 | { | ||
| 61 | 23 | return p_ + n_; | |
| 62 | } | ||
| 63 | }; | ||
| 64 | |||
| 65 | //------------------------------------------------ | ||
| 66 | |||
| 67 | template< | ||
| 68 | class P0, | ||
| 69 | class... Pn> | ||
| 70 | 6 | serializer:: | |
| 71 | serializer( | ||
| 72 | std::size_t buffer_size, | ||
| 73 | P0&& p0, | ||
| 74 | Pn&&... pn) | ||
| 75 | 6 | : serializer(buffer_size) | |
| 76 | { | ||
| 77 |
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6 | apply_params( |
| 78 | std::forward<P0>(p0), | ||
| 79 | std::forward<Pn>(pn)...); | ||
| 80 | 6 | } | |
| 81 | |||
| 82 | //------------------------------------------------ | ||
| 83 | |||
| 84 | template< | ||
| 85 | class ConstBuffers, | ||
| 86 | class> | ||
| 87 | void | ||
| 88 | 22 | serializer:: | |
| 89 | reset( | ||
| 90 | message_view_base const& m, | ||
| 91 | ConstBuffers&& body) | ||
| 92 | { | ||
| 93 | 22 | ws_.clear(); | |
| 94 |
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22 | auto& bs = ws_.push( |
| 95 | 8 | (make_buffers)(std::forward< | |
| 96 | 4 | ConstBuffers>(body))); | |
| 97 | 22 | std::size_t const pn = | |
| 98 | 1 + | ||
| 99 | 1 + // chunk header | ||
| 100 | 22 | std::distance( | |
| 101 | 22 | bs.begin(), bs.end()) + | |
| 102 | 1; // final chunk | ||
| 103 |
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22 | auto const pp = ws_.push_array( |
| 104 | pn, const_buffer{}); | ||
| 105 | 22 | auto p = pp + 2; | |
| 106 |
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44 | for(const_buffer b : bs) |
| 107 | 22 | *p++ = b; | |
| 108 | 22 | reset_buffers_impl(m, pp, pn); | |
| 109 | 22 | } | |
| 110 | |||
| 111 | template< | ||
| 112 | class Source, | ||
| 113 | class> | ||
| 114 | auto | ||
| 115 | 12 | serializer:: | |
| 116 | reset( | ||
| 117 | message_view_base const& m, | ||
| 118 | Source&& source) -> | ||
| 119 | typename std::decay< | ||
| 120 | Source>::type& | ||
| 121 | { | ||
| 122 | 12 | ws_.clear(); | |
| 123 | 12 | auto& rv = ws_.push( | |
| 124 | std::forward< | ||
| 125 | Source>(source)); | ||
| 126 | 12 | reset_source_impl( | |
| 127 | 12 | m, std::addressof(rv)); | |
| 128 | 12 | return rv; | |
| 129 | } | ||
| 130 | |||
| 131 | template<class MaybeReserve> | ||
| 132 | auto | ||
| 133 | serializer:: | ||
| 134 | reset_stream( | ||
| 135 | message_view_base const& m, | ||
| 136 | MaybeReserve&& maybe_reserve) -> | ||
| 137 | stream | ||
| 138 | { | ||
| 139 | // small hack for type-erasing | ||
| 140 | struct Source : source | ||
| 141 | { | ||
| 142 | MaybeReserve&& f; | ||
| 143 | |||
| 144 | void | ||
| 145 | maybe_reserve( | ||
| 146 | std::size_t limit, | ||
| 147 | reserve_fn const& reserve) override | ||
| 148 | { | ||
| 149 | f(limit, reserve); | ||
| 150 | } | ||
| 151 | |||
| 152 | results | ||
| 153 | read(mutable_buffers_pair) override | ||
| 154 | { | ||
| 155 | return {}; | ||
| 156 | } | ||
| 157 | }; | ||
| 158 | Source src{ std::forward< | ||
| 159 | MaybeReserve>(maybe_reserve) }; | ||
| 160 | |||
| 161 | ws_.clear(); | ||
| 162 | reset_stream_impl(m, src); | ||
| 163 | return stream{*this}; | ||
| 164 | } | ||
| 165 | |||
| 166 | //------------------------------------------------ | ||
| 167 | |||
| 168 | inline | ||
| 169 | void | ||
| 170 | 3 | serializer:: | |
| 171 | apply_params() noexcept | ||
| 172 | { | ||
| 173 | 3 | } | |
| 174 | |||
| 175 | template< | ||
| 176 | class P0, | ||
| 177 | class... Pn> | ||
| 178 | void | ||
| 179 | 8 | serializer:: | |
| 180 | apply_params( | ||
| 181 | P0&& p0, | ||
| 182 | Pn&&... pn) | ||
| 183 | { | ||
| 184 | // If you get an error here it means | ||
| 185 | // you passed an unknown parameter type. | ||
| 186 | 8 | apply_param(std::forward<P0>(p0)); | |
| 187 | |||
| 188 | 8 | apply_params( | |
| 189 | std::forward<Pn>(pn)...); | ||
| 190 | 8 | } | |
| 191 | |||
| 192 | } // http_proto | ||
| 193 | } // boost | ||
| 194 | |||
| 195 | #endif | ||
| 196 |