Index/detail / stream.hpp

detail/stream.hpp

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f(x) Functions (34)
Function Calls Lines Branches Blocks
boost::json::detail::const_stream::const_stream(char const*, unsigned long) :27 35719x 100.0% – 100.0% boost::json::detail::const_stream::remain() const :43 64866x 100.0% – 100.0% boost::json::detail::const_stream::data() const :49 62244x 100.0% – 100.0% boost::json::detail::const_stream::operator bool() const :54 31451934x 100.0% – 100.0% boost::json::detail::const_stream::operator*() const :61 31417505x 100.0% – 75.0% boost::json::detail::const_stream::operator++() :69 31417505x 100.0% – 75.0% boost::json::detail::const_stream::skip(unsigned long) :77 26559x 100.0% – 75.0% boost::json::detail::local_const_stream::local_const_stream(boost::json::detail::const_stream&) :98 44285x 100.0% – 100.0% boost::json::detail::local_const_stream::~local_const_stream() :105 44285x 100.0% – 100.0% boost::json::detail::const_stream_wrapper::const_stream_wrapper(char const*&, char const*) :128 4794062x 100.0% – 100.0% boost::json::detail::const_stream_wrapper::operator++() :136 63384959x 100.0% – 100.0% boost::json::detail::const_stream_wrapper::operator+=(unsigned long) :141 2046839x 100.0% – 100.0% boost::json::detail::const_stream_wrapper::operator=(char const*) :146 7322858x 100.0% – 100.0% boost::json::detail::const_stream_wrapper::operator*() const :151 70856167x 100.0% – 100.0% boost::json::detail::const_stream_wrapper::operator bool() const :156 76831743x 100.0% – 100.0% boost::json::detail::const_stream_wrapper::begin() const :161 20797775x 100.0% – 100.0% boost::json::detail::const_stream_wrapper::end() const :166 4865457x 100.0% – 100.0% boost::json::detail::const_stream_wrapper::remain() const :171 2135882x 100.0% – 100.0% boost::json::detail::const_stream_wrapper::remain(char const*) const :176 3071x 100.0% – 100.0% boost::json::detail::const_stream_wrapper::used(char const*) const :181 2314817x 100.0% – 100.0% boost::json::detail::clipped_const_stream::clipped_const_stream(char const*&, char const*) :193 13678x 100.0% – 100.0% boost::json::detail::clipped_const_stream::operator bool() const :211 68643x 100.0% – 100.0% boost::json::detail::clipped_const_stream::remain() const :216 11688x 100.0% – 100.0% boost::json::detail::clipped_const_stream::clip(unsigned long) :227 15663x 100.0% – 100.0% boost::json::detail::stream::stream(char*, unsigned long) :247 32982x 100.0% – 100.0% boost::json::detail::stream::used(char*) const :256 32980x 100.0% – 100.0% boost::json::detail::stream::remain() const :263 90553x 100.0% – 100.0% boost::json::detail::stream::data() :269 2956x 100.0% – 100.0% boost::json::detail::stream::operator bool() const :274 31623944x 100.0% – 100.0% boost::json::detail::stream::append(char const*, unsigned long) :298 32736x 100.0% – 75.0% boost::json::detail::stream::append(char) :309 31554204x 100.0% – 67.0% boost::json::detail::stream::advance(unsigned long) :316 2956x 100.0% – 75.0% boost::json::detail::local_stream::local_stream(boost::json::detail::stream&) :330 84495x 100.0% – 100.0% boost::json::detail::local_stream::~local_stream() :337 84495x 100.0% – 100.0%
Line TLA Hits Source Code
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/boostorg/json
8 //
9
10 #ifndef BOOST_JSON_DETAIL_STREAM_HPP
11 #define BOOST_JSON_DETAIL_STREAM_HPP
12
13 namespace boost {
14 namespace json {
15 namespace detail {
16
17 class const_stream
18 {
19 friend class local_const_stream;
20
21 char const* p_;
22 char const* end_;
23
24 public:
25 const_stream() = default;
26
27 35719x const_stream(
28 char const* data,
29 std::size_t size) noexcept
30 35719x : p_(data)
31 35719x , end_(data + size)
32 {
33 35719x }
34
35 size_t
36 used(char const* begin) const noexcept
37 {
38 return static_cast<
39 size_t>(p_ - begin);
40 }
41
42 size_t
43 64866x remain() const noexcept
44 {
45 64866x return end_ - p_;
46 }
47
48 char const*
49 62244x data() const noexcept
50 {
51 62244x return p_;
52 }
53
54 31451934x operator bool() const noexcept
55 {
56 31451934x return p_ < end_;
57 }
58
59 // unchecked
60 char
61 31417505x operator*() const noexcept
62 {
63 31417505x BOOST_ASSERT(p_ < end_);
64 31417505x return *p_;
65 }
66
67 // unchecked
68 const_stream&
69 31417505x operator++() noexcept
70 {
71 31417505x BOOST_ASSERT(p_ < end_);
72 31417505x ++p_;
73 31417505x return *this;
74 }
75
76 void
77 26559x skip(std::size_t n) noexcept
78 {
79 26559x BOOST_ASSERT(n <= remain());
80 26559x p_ += n;
81 26559x }
82
83 void
84 skip_to(const char* p) noexcept
85 {
86 BOOST_ASSERT(p <= end_ && p >= p_);
87 p_ = p;
88 }
89 };
90
91 class local_const_stream
92 : public const_stream
93 {
94 const_stream& src_;
95
96 public:
97 explicit
98 44285x local_const_stream(
99 const_stream& src) noexcept
100 44285x : const_stream(src)
101 44285x , src_(src)
102 {
103 44285x }
104
105 44285x ~local_const_stream()
106 {
107 44285x src_.p_ = p_;
108 44285x }
109
110 void
111 clip(std::size_t n) noexcept
112 {
113 if(static_cast<std::size_t>(
114 src_.end_ - p_) > n)
115 end_ = p_ + n;
116 else
117 end_ = src_.end_;
118 }
119 };
120
121 class const_stream_wrapper
122 {
123 const char*& p_;
124 const char* const end_;
125
126 friend class clipped_const_stream;
127 public:
128 4794062x const_stream_wrapper(
129 const char*& p,
130 const char* end)
131 4794062x : p_(p)
132 4794062x , end_(end)
133 {
134 4794062x }
135
136 63384959x void operator++() noexcept
137 {
138 63384959x ++p_;
139 63384959x }
140
141 2046839x void operator+=(std::size_t n) noexcept
142 {
143 2046839x p_ += n;
144 2046839x }
145
146 7322858x void operator=(const char* p) noexcept
147 {
148 7322858x p_ = p;
149 7322858x }
150
151 70856167x char operator*() const noexcept
152 {
153 70856167x return *p_;
154 }
155
156 76831743x operator bool() const noexcept
157 {
158 76831743x return p_ < end_;
159 }
160
161 20797775x const char* begin() const noexcept
162 {
163 20797775x return p_;
164 }
165
166 4865457x const char* end() const noexcept
167 {
168 4865457x return end_;
169 }
170
171 2135882x std::size_t remain() const noexcept
172 {
173 2135882x return end_ - p_;
174 }
175
176 3071x std::size_t remain(const char* p) const noexcept
177 {
178 3071x return end_ - p;
179 }
180
181 2314817x std::size_t used(const char* p) const noexcept
182 {
183 2314817x return p_ - p;
184 }
185 };
186
187 class clipped_const_stream
188 : public const_stream_wrapper
189 {
190 const char* clip_;
191
192 public:
193 13678x clipped_const_stream(
194 const char*& p,
195 const char* end)
196 13678x : const_stream_wrapper(p, end)
197 13678x , clip_(end)
198 {
199 13678x }
200
201 void operator=(const char* p)
202 {
203 p_ = p;
204 }
205
206 const char* end() const noexcept
207 {
208 return clip_;
209 }
210
211 68643x operator bool() const noexcept
212 {
213 68643x return p_ < clip_;
214 }
215
216 11688x std::size_t remain() const noexcept
217 {
218 11688x return clip_ - p_;
219 }
220
221 std::size_t remain(const char* p) const noexcept
222 {
223 return clip_ - p;
224 }
225
226 void
227 15663x clip(std::size_t n) noexcept
228 {
229 15663x if(static_cast<std::size_t>(
230 15663x end_ - p_) > n)
231 37x clip_ = p_ + n;
232 else
233 15626x clip_ = end_;
234 15663x }
235 };
236
237 //--------------------------------------
238
239 class stream
240 {
241 friend class local_stream;
242
243 char* p_;
244 char* end_;
245
246 public:
247 32982x stream(
248 char* data,
249 std::size_t size) noexcept
250 32982x : p_(data)
251 32982x , end_(data + size)
252 {
253 32982x }
254
255 size_t
256 32980x used(char* begin) const noexcept
257 {
258 return static_cast<
259 32980x size_t>(p_ - begin);
260 }
261
262 size_t
263 90553x remain() const noexcept
264 {
265 90553x return end_ - p_;
266 }
267
268 char*
269 2956x data() noexcept
270 {
271 2956x return p_;
272 }
273
274 31623944x operator bool() const noexcept
275 {
276 31623944x return p_ < end_;
277 }
278
279 // unchecked
280 char&
281 operator*() noexcept
282 {
283 BOOST_ASSERT(p_ < end_);
284 return *p_;
285 }
286
287 // unchecked
288 stream&
289 operator++() noexcept
290 {
291 BOOST_ASSERT(p_ < end_);
292 ++p_;
293 return *this;
294 }
295
296 // unchecked
297 void
298 32736x append(
299 char const* src,
300 std::size_t n) noexcept
301 {
302 32736x BOOST_ASSERT(remain() >= n);
303 32736x std::memcpy(p_, src, n);
304 32736x p_ += n;
305 32736x }
306
307 // unchecked
308 void
309 31554204x append(char c) noexcept
310 {
311 31554204x BOOST_ASSERT(p_ < end_);
312 31554204x *p_++ = c;
313 31554204x }
314
315 void
316 2956x advance(std::size_t n) noexcept
317 {
318 2956x BOOST_ASSERT(remain() >= n);
319 2956x p_ += n;
320 2956x }
321 };
322
323 class local_stream
324 : public stream
325 {
326 stream& src_;
327
328 public:
329 explicit
330 84495x local_stream(
331 stream& src)
332 84495x : stream(src)
333 84495x , src_(src)
334 {
335 84495x }
336
337 84495x ~local_stream()
338 {
339 84495x src_.p_ = p_;
340 84495x }
341 };
342
343 } // detail
344 } // namespace json
345 } // namespace boost
346
347 #endif
348