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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 <boost/buffers/range.hpp> | ||
15 | |||
16 | namespace boost { | ||
17 | namespace http_proto { | ||
18 | |||
19 | class serializer:: | ||
20 | const_buffers_type | ||
21 | { | ||
22 | std::size_t n_ = 0; | ||
23 | buffers::const_buffer const* p_ = nullptr; | ||
24 | |||
25 | friend class serializer; | ||
26 | |||
27 | 30 | const_buffers_type( | |
28 | buffers::const_buffer const* p, | ||
29 | std::size_t n) noexcept | ||
30 | 30 | : n_(n) | |
31 | 30 | , p_(p) | |
32 | { | ||
33 | 30 | } | |
34 | |||
35 | public: | ||
36 | using iterator = buffers::const_buffer const*; | ||
37 | using const_iterator = iterator; | ||
38 | using value_type = buffers::const_buffer; | ||
39 | using reference = buffers::const_buffer; | ||
40 | using const_reference = buffers::const_buffer; | ||
41 | using size_type = std::size_t; | ||
42 | using difference_type = std::ptrdiff_t; | ||
43 | |||
44 | const_buffers_type() = default; | ||
45 | const_buffers_type( | ||
46 | const_buffers_type const&) = default; | ||
47 | const_buffers_type& operator=( | ||
48 | const_buffers_type const&) = default; | ||
49 | |||
50 | iterator | ||
51 | 59 | begin() const noexcept | |
52 | { | ||
53 | 59 | return p_; | |
54 | } | ||
55 | |||
56 | iterator | ||
57 | 59 | end() const noexcept | |
58 | { | ||
59 | 59 | return p_ + n_; | |
60 | } | ||
61 | }; | ||
62 | |||
63 | //------------------------------------------------ | ||
64 | |||
65 | template< | ||
66 | class ConstBufferSequence, | ||
67 | class> | ||
68 | void | ||
69 | 14 | serializer:: | |
70 | start( | ||
71 | message_view_base const& m, | ||
72 | ConstBufferSequence&& body) | ||
73 | { | ||
74 | 14 | start_init(m); | |
75 | 14 | auto const& bs = | |
76 | ws_.push(std::forward< | ||
77 | ConstBufferSequence>(body)); | ||
78 | 14 | std::size_t n = std::distance( | |
79 | buffers::begin(bs), | ||
80 | buffers::end(bs)); | ||
81 | 14 | buf_ = make_array(n); | |
82 | 14 | auto p = buf_.data(); | |
83 |
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28 | for(buffers::const_buffer b : |
84 | 14 | buffers::range(bs)) | |
85 | 14 | *p++ = b; | |
86 | 14 | start_buffers(m); | |
87 | 14 | } | |
88 | |||
89 | template< | ||
90 | class Source, | ||
91 | class> | ||
92 | auto | ||
93 | 16 | serializer:: | |
94 | start( | ||
95 | message_view_base const& m, | ||
96 | Source&& src0) -> | ||
97 | typename std::decay< | ||
98 | Source>::type& | ||
99 | { | ||
100 | 16 | start_init(m); | |
101 | 16 | auto& src = ws_.push( | |
102 | std::forward< | ||
103 | Source>(src0)); | ||
104 | 16 | start_source( | |
105 | 16 | m, std::addressof(src)); | |
106 | 16 | return src; | |
107 | } | ||
108 | |||
109 | //------------------------------------------------ | ||
110 | |||
111 | inline | ||
112 | auto | ||
113 | 26 | serializer:: | |
114 | make_array(std::size_t n) -> | ||
115 | detail::array_of_const_buffers | ||
116 | { | ||
117 | return { | ||
118 | ws_.push_array(n, | ||
119 | 52 | buffers::const_buffer{}), | |
120 |
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26 | n }; |
121 | } | ||
122 | |||
123 | //------------------------------------------------ | ||
124 | |||
125 | template<class T> | ||
126 | auto | ||
127 | 17 | serializer:: | |
128 | source:: | ||
129 | read_impl( | ||
130 | T const& bs) -> | ||
131 | results | ||
132 | { | ||
133 | 17 | results rv; | |
134 | 17 | constexpr int SmallArraySize = 16; | |
135 | 17 | buffers::mutable_buffer tmp[SmallArraySize]; | |
136 | 17 | auto const tmp_end = | |
137 | tmp + SmallArraySize; | ||
138 | 17 | auto it = buffers::begin(bs); | |
139 | 17 | auto const end_ = buffers::end(bs); | |
140 |
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28 | while(it != end_) |
141 | { | ||
142 | 17 | auto p = tmp; | |
143 | 17 | do | |
144 | { | ||
145 | 34 | *p++ = *it++; | |
146 | } | ||
147 | while( | ||
148 |
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34 | p != tmp_end && |
149 | it != end_); | ||
150 |
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17 | rv += on_read( |
151 | buffers::mutable_buffer_span( | ||
152 | 17 | tmp, p - tmp)); | |
153 |
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17 | if(rv.ec.failed()) |
154 | ✗ | return rv; | |
155 |
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17 | if(rv.finished) |
156 | 6 | break; | |
157 | } | ||
158 | 17 | return rv; | |
159 | } | ||
160 | |||
161 | } // http_proto | ||
162 | } // boost | ||
163 | |||
164 | #endif | ||
165 |