| Line | Branch | Exec | Source |
|---|---|---|---|
| 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_BUFFER_HPP | ||
| 11 | #define BOOST_HTTP_PROTO_BUFFER_HPP | ||
| 12 | |||
| 13 | #include <boost/http_proto/detail/config.hpp> | ||
| 14 | #include <boost/assert.hpp> | ||
| 15 | #include <boost/config/workaround.hpp> | ||
| 16 | #include <boost/type_traits/make_void.hpp> | ||
| 17 | #include <cstdlib> | ||
| 18 | #include <cstring> | ||
| 19 | #include <iterator> | ||
| 20 | #include <type_traits> | ||
| 21 | #include <utility> | ||
| 22 | |||
| 23 | namespace boost { | ||
| 24 | namespace http_proto { | ||
| 25 | |||
| 26 | /** size tag for tag_invoke. | ||
| 27 | */ | ||
| 28 | struct size_tag {}; | ||
| 29 | |||
| 30 | /** prefix tag for tag_invoke. | ||
| 31 | */ | ||
| 32 | struct prefix_tag {}; | ||
| 33 | |||
| 34 | /** suffix tag for tag-invoke. | ||
| 35 | */ | ||
| 36 | struct suffix_tag {}; | ||
| 37 | |||
| 38 | //------------------------------------------------ | ||
| 39 | |||
| 40 | /** Holds a buffer that can be modified. | ||
| 41 | */ | ||
| 42 | class mutable_buffer | ||
| 43 | { | ||
| 44 | unsigned char* p_ = nullptr; | ||
| 45 | std::size_t n_ = 0; | ||
| 46 | |||
| 47 | public: | ||
| 48 | using value_type = mutable_buffer; | ||
| 49 | using const_iterator = | ||
| 50 | value_type const*; | ||
| 51 | |||
| 52 | 3187 | mutable_buffer() = default; | |
| 53 | mutable_buffer( | ||
| 54 | mutable_buffer const&) = default; | ||
| 55 | mutable_buffer& operator=( | ||
| 56 | mutable_buffer const&) = default; | ||
| 57 | |||
| 58 | 8333 | mutable_buffer( | |
| 59 | void* data, | ||
| 60 | std::size_t size) noexcept | ||
| 61 | 8333 | : p_(static_cast< | |
| 62 | unsigned char*>(data)) | ||
| 63 | 8333 | , n_(size) | |
| 64 | { | ||
| 65 | 8333 | } | |
| 66 | |||
| 67 | #ifndef BOOST_HTTP_PROTO_DOCS | ||
| 68 | // conversion to boost::asio::mutable_buffer | ||
| 69 | template< | ||
| 70 | class T | ||
| 71 | , class = typename std::enable_if< | ||
| 72 | std::is_constructible<T, | ||
| 73 | void*, std::size_t>::value | ||
| 74 | && ! std::is_same<T, mutable_buffer>::value | ||
| 75 | //&& ! std::is_same<T, const_buffer>::value | ||
| 76 | >::type | ||
| 77 | > | ||
| 78 | operator T() const noexcept | ||
| 79 | { | ||
| 80 | return T{ data(), size() }; | ||
| 81 | } | ||
| 82 | #endif | ||
| 83 | |||
| 84 | void* | ||
| 85 | 7884 | data() const noexcept | |
| 86 | { | ||
| 87 | 7884 | return p_; | |
| 88 | } | ||
| 89 | |||
| 90 | std::size_t | ||
| 91 | 23271 | size() const noexcept | |
| 92 | { | ||
| 93 | 23271 | return n_; | |
| 94 | } | ||
| 95 | |||
| 96 | const_iterator | ||
| 97 | 56 | begin() const noexcept | |
| 98 | { | ||
| 99 | 56 | return this; | |
| 100 | } | ||
| 101 | |||
| 102 | const_iterator | ||
| 103 | 56 | end() const noexcept | |
| 104 | { | ||
| 105 | 56 | return this + 1; | |
| 106 | } | ||
| 107 | |||
| 108 | /** Remove a prefix from the buffer. | ||
| 109 | */ | ||
| 110 | mutable_buffer& | ||
| 111 | 4848 | operator+=(std::size_t n) noexcept | |
| 112 | { | ||
| 113 |
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4848 | if(n >= n_) |
| 114 | { | ||
| 115 | 33 | p_ = p_ + n_; | |
| 116 | 33 | n_ = 0; | |
| 117 | 33 | return *this; | |
| 118 | } | ||
| 119 | 4815 | p_ = p_ + n; | |
| 120 | 4815 | n_ -= n; | |
| 121 | 4815 | return *this; | |
| 122 | } | ||
| 123 | |||
| 124 | /** Return the buffer with a prefix removed. | ||
| 125 | */ | ||
| 126 | friend | ||
| 127 | mutable_buffer | ||
| 128 | 4844 | operator+( | |
| 129 | mutable_buffer b, | ||
| 130 | std::size_t n) noexcept | ||
| 131 | { | ||
| 132 | 4844 | return b += n; | |
| 133 | } | ||
| 134 | |||
| 135 | /** Return the buffer with a prefix removed. | ||
| 136 | */ | ||
| 137 | friend | ||
| 138 | mutable_buffer | ||
| 139 | 1 | operator+( | |
| 140 | std::size_t n, | ||
| 141 | mutable_buffer b) noexcept | ||
| 142 | { | ||
| 143 | 1 | return b += n; | |
| 144 | } | ||
| 145 | |||
| 146 | #ifndef BOOST_HTTP_PROTO_DOCS | ||
| 147 | friend | ||
| 148 | mutable_buffer | ||
| 149 | 2 | tag_invoke( | |
| 150 | prefix_tag const&, | ||
| 151 | mutable_buffer const& b, | ||
| 152 | std::size_t n) noexcept | ||
| 153 | { | ||
| 154 |
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2 | if(n < b.size()) |
| 155 | 2 | return { b.p_, n }; | |
| 156 | ✗ | return b; | |
| 157 | } | ||
| 158 | |||
| 159 | friend | ||
| 160 | mutable_buffer | ||
| 161 | 2 | tag_invoke( | |
| 162 | suffix_tag const&, | ||
| 163 | mutable_buffer const& b, | ||
| 164 | std::size_t n) noexcept | ||
| 165 | { | ||
| 166 |
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2 | if(n < b.size()) |
| 167 | 2 | return { b.p_ + b.n_ - n, n }; | |
| 168 | ✗ | return b; | |
| 169 | } | ||
| 170 | #endif | ||
| 171 | }; | ||
| 172 | |||
| 173 | //------------------------------------------------ | ||
| 174 | |||
| 175 | /** Holds a buffer that cannot be modified. | ||
| 176 | */ | ||
| 177 | class const_buffer | ||
| 178 | { | ||
| 179 | unsigned char const* p_ = nullptr; | ||
| 180 | std::size_t n_ = 0; | ||
| 181 | |||
| 182 | public: | ||
| 183 | using value_type = const_buffer; | ||
| 184 | using const_iterator = | ||
| 185 | value_type const*; | ||
| 186 | |||
| 187 | 29 | const_buffer() = default; | |
| 188 | const_buffer( | ||
| 189 | const_buffer const&) = default; | ||
| 190 | const_buffer& operator=( | ||
| 191 | const_buffer const&) = default; | ||
| 192 | |||
| 193 | 5326 | const_buffer( | |
| 194 | void const* data, | ||
| 195 | std::size_t size) noexcept | ||
| 196 | 5326 | : p_(static_cast< | |
| 197 | unsigned char const*>(data)) | ||
| 198 | 5326 | , n_(size) | |
| 199 | { | ||
| 200 | 5326 | } | |
| 201 | |||
| 202 | 14 | const_buffer( | |
| 203 | mutable_buffer const& b) noexcept | ||
| 204 | 14 | : p_(static_cast< | |
| 205 | 14 | unsigned char const*>(b.data())) | |
| 206 | 14 | , n_(b.size()) | |
| 207 | { | ||
| 208 | 14 | } | |
| 209 | |||
| 210 | #ifndef BOOST_HTTP_PROTO_DOCS | ||
| 211 | // conversion to boost::asio::const_buffer | ||
| 212 | template< | ||
| 213 | class T | ||
| 214 | , class = typename std::enable_if< | ||
| 215 | std::is_constructible<T, | ||
| 216 | void const*, std::size_t>::value && | ||
| 217 | ! std::is_same<T, mutable_buffer>::value && | ||
| 218 | ! std::is_same<T, const_buffer>::value | ||
| 219 | >::type | ||
| 220 | > | ||
| 221 | operator T() const noexcept | ||
| 222 | { | ||
| 223 | return T{ data(), size() }; | ||
| 224 | } | ||
| 225 | #endif | ||
| 226 | |||
| 227 | void const* | ||
| 228 | 4851 | data() const noexcept | |
| 229 | { | ||
| 230 | 4851 | return p_; | |
| 231 | } | ||
| 232 | |||
| 233 | std::size_t | ||
| 234 | 15078 | size() const noexcept | |
| 235 | { | ||
| 236 | 15078 | return n_; | |
| 237 | } | ||
| 238 | |||
| 239 | const_iterator | ||
| 240 | 216 | begin() const noexcept | |
| 241 | { | ||
| 242 | 216 | return this; | |
| 243 | } | ||
| 244 | |||
| 245 | const_iterator | ||
| 246 | 216 | end() const noexcept | |
| 247 | { | ||
| 248 | 216 | return this + 1; | |
| 249 | } | ||
| 250 | |||
| 251 | /** Remove a prefix from the buffer. | ||
| 252 | */ | ||
| 253 | const_buffer& | ||
| 254 | 4847 | operator+=(std::size_t n) noexcept | |
| 255 | { | ||
| 256 |
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4847 | if(n >= n_) |
| 257 | { | ||
| 258 | 33 | p_ = p_ + n_; | |
| 259 | 33 | n_ = 0; | |
| 260 | 33 | return *this; | |
| 261 | } | ||
| 262 | 4814 | p_ = p_ + n; | |
| 263 | 4814 | n_ -= n; | |
| 264 | 4814 | return *this; | |
| 265 | } | ||
| 266 | |||
| 267 | /** Return the buffer with a prefix removed. | ||
| 268 | */ | ||
| 269 | friend | ||
| 270 | const_buffer | ||
| 271 | 4844 | operator+( | |
| 272 | const_buffer b, | ||
| 273 | std::size_t n) noexcept | ||
| 274 | { | ||
| 275 | 4844 | return b += n; | |
| 276 | } | ||
| 277 | |||
| 278 | /** Return the buffer with a prefix removed. | ||
| 279 | */ | ||
| 280 | friend | ||
| 281 | const_buffer | ||
| 282 | 1 | operator+( | |
| 283 | std::size_t n, | ||
| 284 | const_buffer b) noexcept | ||
| 285 | { | ||
| 286 | 1 | return b += n; | |
| 287 | } | ||
| 288 | |||
| 289 | #ifndef BOOST_HTTP_PROTO_DOCS | ||
| 290 | friend | ||
| 291 | const_buffer | ||
| 292 | 2 | tag_invoke( | |
| 293 | prefix_tag const&, | ||
| 294 | const_buffer const& b, | ||
| 295 | std::size_t n) noexcept | ||
| 296 | { | ||
| 297 |
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2 | if(n < b.size()) |
| 298 | 2 | return { b.p_, n }; | |
| 299 | ✗ | return b; | |
| 300 | } | ||
| 301 | |||
| 302 | friend | ||
| 303 | const_buffer | ||
| 304 | 2 | tag_invoke( | |
| 305 | suffix_tag const&, | ||
| 306 | const_buffer const& b, | ||
| 307 | std::size_t n) noexcept | ||
| 308 | { | ||
| 309 |
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2 | if(n < b.size()) |
| 310 | 2 | return { b.p_ + b.n_ - n, n }; | |
| 311 | ✗ | return b; | |
| 312 | } | ||
| 313 | #endif | ||
| 314 | }; | ||
| 315 | |||
| 316 | //------------------------------------------------ | ||
| 317 | |||
| 318 | #ifndef BOOST_HTTP_PROTO_DOCS | ||
| 319 | namespace detail { | ||
| 320 | |||
| 321 | // is bidirectional iterator | ||
| 322 | template<class T, class = void> | ||
| 323 | struct is_bidir_iter : std::false_type | ||
| 324 | { | ||
| 325 | }; | ||
| 326 | |||
| 327 | template<class T> | ||
| 328 | struct is_bidir_iter<T, boost::void_t<decltype( | ||
| 329 | // LegacyIterator | ||
| 330 | *std::declval<T&>() | ||
| 331 | ), | ||
| 332 | // LegacyIterator | ||
| 333 | typename std::iterator_traits<T>::value_type, | ||
| 334 | typename std::iterator_traits<T>::difference_type, | ||
| 335 | typename std::iterator_traits<T>::reference, | ||
| 336 | typename std::iterator_traits<T>::pointer, | ||
| 337 | typename std::iterator_traits<T>::iterator_category, | ||
| 338 | typename std::enable_if< | ||
| 339 | // LegacyIterator | ||
| 340 | std::is_copy_constructible<T>::value && | ||
| 341 | std::is_copy_assignable<T>::value && | ||
| 342 | std::is_destructible<T>::value && | ||
| 343 | std::is_same<T&, decltype( | ||
| 344 | ++std::declval<T&>())>::value && | ||
| 345 | // Swappable | ||
| 346 | // VFALCO TODO | ||
| 347 | // EqualityComparable | ||
| 348 | std::is_convertible<decltype( | ||
| 349 | std::declval<T const&>() == | ||
| 350 | std::declval<T const&>()), | ||
| 351 | bool>::value && | ||
| 352 | // LegacyInputIterator | ||
| 353 | std::is_convertible<typename | ||
| 354 | std::iterator_traits<T>::reference, typename | ||
| 355 | std::iterator_traits<T>::value_type>::value && | ||
| 356 | std::is_same<typename | ||
| 357 | std::iterator_traits<T>::reference, | ||
| 358 | decltype(*std::declval<T const&>())>::value && | ||
| 359 | std::is_convertible<decltype( | ||
| 360 | std::declval<T const&>() != | ||
| 361 | std::declval<T const&>()), | ||
| 362 | bool>::value && | ||
| 363 | std::is_same<T&, decltype( | ||
| 364 | ++std::declval<T&>())>::value && | ||
| 365 | // VFALCO (void)r++ (void)++r | ||
| 366 | std::is_convertible<decltype( | ||
| 367 | *std::declval<T&>()++), typename | ||
| 368 | std::iterator_traits<T>::value_type>::value && | ||
| 369 | // LegacyForwardIterator | ||
| 370 | std::is_default_constructible<T>::value && | ||
| 371 | std::is_same<T, decltype( | ||
| 372 | std::declval<T&>()++)>::value && | ||
| 373 | std::is_same<typename | ||
| 374 | std::iterator_traits<T>::reference, | ||
| 375 | decltype(*std::declval<T&>()++) | ||
| 376 | >::value && | ||
| 377 | // LegacyBidirectionalIterator | ||
| 378 | std::is_same<T&, decltype( | ||
| 379 | --std::declval<T&>())>::value && | ||
| 380 | std::is_convertible<decltype( | ||
| 381 | std::declval<T&>()--), | ||
| 382 | T const&>::value && | ||
| 383 | std::is_same<typename | ||
| 384 | std::iterator_traits<T>::reference, | ||
| 385 | decltype(*std::declval<T&>()--)>::value | ||
| 386 | >::type >> | ||
| 387 | : std::true_type | ||
| 388 | { | ||
| 389 | }; | ||
| 390 | |||
| 391 | } // detail | ||
| 392 | #endif | ||
| 393 | |||
| 394 | //------------------------------------------------ | ||
| 395 | |||
| 396 | // https://www.boost.org/doc/libs/1_65_0/doc/html/boost_asio/reference/ConstBufferSequence.html | ||
| 397 | |||
| 398 | /** Determine if T is a ConstBuffers. | ||
| 399 | */ | ||
| 400 | #if BOOST_HTTP_PROTO_DOCS | ||
| 401 | template<class T> | ||
| 402 | struct is_const_buffers | ||
| 403 | : std::integral_constant<bool, ...>{}; | ||
| 404 | #else | ||
| 405 | |||
| 406 | template<class T, class = void> | ||
| 407 | struct is_const_buffers : std::false_type | ||
| 408 | { | ||
| 409 | }; | ||
| 410 | |||
| 411 | template<class T> | ||
| 412 | struct is_const_buffers<T const> | ||
| 413 | : is_const_buffers<typename | ||
| 414 | std::decay<T>::type> | ||
| 415 | { | ||
| 416 | }; | ||
| 417 | |||
| 418 | template<class T> | ||
| 419 | struct is_const_buffers<T const&> | ||
| 420 | : is_const_buffers<typename | ||
| 421 | std::decay<T>::type> | ||
| 422 | { | ||
| 423 | }; | ||
| 424 | |||
| 425 | template<class T> | ||
| 426 | struct is_const_buffers<T&> | ||
| 427 | : is_const_buffers<typename | ||
| 428 | std::decay<T>::type> | ||
| 429 | { | ||
| 430 | }; | ||
| 431 | |||
| 432 | template<class T> | ||
| 433 | struct is_const_buffers<T, boost::void_t< | ||
| 434 | typename std::enable_if< | ||
| 435 | (std::is_same<const_buffer, typename | ||
| 436 | T::value_type>::value | ||
| 437 | || std::is_same<mutable_buffer, typename | ||
| 438 | T::value_type>::value | ||
| 439 | ) && | ||
| 440 | detail::is_bidir_iter<typename | ||
| 441 | T::const_iterator>::value && | ||
| 442 | std::is_same<typename | ||
| 443 | T::const_iterator, decltype( | ||
| 444 | std::declval<T const&>().begin()) | ||
| 445 | >::value && | ||
| 446 | std::is_same<typename | ||
| 447 | T::const_iterator, decltype( | ||
| 448 | std::declval<T const&>().end()) | ||
| 449 | >::value && ( | ||
| 450 | std::is_same<const_buffer, typename | ||
| 451 | std::remove_const<typename | ||
| 452 | std::iterator_traits< | ||
| 453 | typename T::const_iterator | ||
| 454 | >::value_type>::type | ||
| 455 | >::value || | ||
| 456 | std::is_same<mutable_buffer, typename | ||
| 457 | std::remove_const<typename | ||
| 458 | std::iterator_traits< | ||
| 459 | typename T::const_iterator | ||
| 460 | >::value_type>::type | ||
| 461 | >::value) | ||
| 462 | >::type | ||
| 463 | > > : std::is_move_constructible<T> | ||
| 464 | { | ||
| 465 | }; | ||
| 466 | |||
| 467 | #endif | ||
| 468 | |||
| 469 | /** Determine if T is a MutableBuffers. | ||
| 470 | */ | ||
| 471 | #if BOOST_HTTP_PROTO_DOCS | ||
| 472 | template<class T> | ||
| 473 | struct is_mutable_buffers | ||
| 474 | : std::integral_constant<bool, ...>{}; | ||
| 475 | #else | ||
| 476 | |||
| 477 | template<class T, class = void> | ||
| 478 | struct is_mutable_buffers : std::false_type | ||
| 479 | { | ||
| 480 | }; | ||
| 481 | |||
| 482 | template<class T> | ||
| 483 | struct is_mutable_buffers<T const> | ||
| 484 | : is_mutable_buffers<typename | ||
| 485 | std::decay<T>::type> | ||
| 486 | { | ||
| 487 | }; | ||
| 488 | |||
| 489 | template<class T> | ||
| 490 | struct is_mutable_buffers<T const&> | ||
| 491 | : is_mutable_buffers<typename | ||
| 492 | std::decay<T>::type> | ||
| 493 | { | ||
| 494 | }; | ||
| 495 | |||
| 496 | template<class T> | ||
| 497 | struct is_mutable_buffers<T&> | ||
| 498 | : is_mutable_buffers<typename | ||
| 499 | std::decay<T>::type> | ||
| 500 | { | ||
| 501 | }; | ||
| 502 | |||
| 503 | template<class T> | ||
| 504 | struct is_mutable_buffers<T, boost::void_t< | ||
| 505 | typename std::enable_if< | ||
| 506 | detail::is_bidir_iter<typename | ||
| 507 | T::const_iterator>::value && | ||
| 508 | std::is_same<typename | ||
| 509 | T::const_iterator, decltype( | ||
| 510 | std::declval<T const&>().begin()) | ||
| 511 | >::value && | ||
| 512 | std::is_same<typename | ||
| 513 | T::const_iterator, decltype( | ||
| 514 | std::declval<T const&>().end()) | ||
| 515 | >::value && | ||
| 516 | std::is_same<mutable_buffer, typename | ||
| 517 | std::remove_const<typename | ||
| 518 | std::iterator_traits< | ||
| 519 | typename T::const_iterator | ||
| 520 | >::value_type>::type | ||
| 521 | >::value | ||
| 522 | >::type | ||
| 523 | >> : std::is_move_constructible<T> | ||
| 524 | { | ||
| 525 | }; | ||
| 526 | |||
| 527 | #endif | ||
| 528 | |||
| 529 | //------------------------------------------------ | ||
| 530 | |||
| 531 | /** Determine if T is a DynamicBuffer | ||
| 532 | */ | ||
| 533 | #if BOOST_HTTP_PROTO_DOCS | ||
| 534 | template<class T> | ||
| 535 | struct is_dynamic_buffer | ||
| 536 | : std::integral_constant<bool, ...>{}; | ||
| 537 | #else | ||
| 538 | |||
| 539 | template< | ||
| 540 | class T, | ||
| 541 | class = void> | ||
| 542 | struct is_dynamic_buffer : std::false_type {}; | ||
| 543 | |||
| 544 | template<class T> | ||
| 545 | struct is_dynamic_buffer< | ||
| 546 | T, boost::void_t<decltype( | ||
| 547 | std::declval<std::size_t&>() = | ||
| 548 | std::declval<T const&>().size() | ||
| 549 | ,std::declval<std::size_t&>() = | ||
| 550 | std::declval<T const&>().max_size() | ||
| 551 | ,std::declval<std::size_t&>() = | ||
| 552 | std::declval<T const&>().capacity() | ||
| 553 | ,std::declval<T&>().commit( | ||
| 554 | std::declval<std::size_t>()) | ||
| 555 | ,std::declval<T&>().consume( | ||
| 556 | std::declval<std::size_t>()) | ||
| 557 | ) | ||
| 558 | ,typename std::enable_if< | ||
| 559 | is_const_buffers<typename | ||
| 560 | T::const_buffers_type>::value | ||
| 561 | && is_mutable_buffers<typename | ||
| 562 | T::mutable_buffers_type>::value | ||
| 563 | >::type | ||
| 564 | ,typename std::enable_if< | ||
| 565 | std::is_same<decltype( | ||
| 566 | std::declval<T const&>().data()), | ||
| 567 | typename T::const_buffers_type>::value | ||
| 568 | && std::is_same<decltype( | ||
| 569 | std::declval<T&>().prepare( | ||
| 570 | std::declval<std::size_t>())), | ||
| 571 | typename T::mutable_buffers_type>::value | ||
| 572 | >::type | ||
| 573 | > > : std::true_type | ||
| 574 | { | ||
| 575 | }; | ||
| 576 | |||
| 577 | #endif | ||
| 578 | |||
| 579 | //------------------------------------------------ | ||
| 580 | |||
| 581 | #if BOOST_WORKAROUND(BOOST_MSVC, < 1910) | ||
| 582 | # pragma warning (push) | ||
| 583 | # pragma warning (disable: 4521) // multiple copy constructors specified | ||
| 584 | # pragma warning (disable: 4522) // multiple assignment operators specified | ||
| 585 | #endif | ||
| 586 | |||
| 587 | template<bool isConst> | ||
| 588 | class buffers_pair | ||
| 589 | { | ||
| 590 | public: | ||
| 591 | // VFALCO: This type is public otherwise | ||
| 592 | // asio::buffers_iterator won't compile. | ||
| 593 | using value_type = typename | ||
| 594 | std::conditional<isConst, | ||
| 595 | const_buffer, | ||
| 596 | mutable_buffer>::type; | ||
| 597 | |||
| 598 | using const_iterator = value_type const*; | ||
| 599 | |||
| 600 | ✗ | buffers_pair() = default; | |
| 601 | |||
| 602 | #if defined(BOOST_HTTP_PROTO_DOCS) || ( \ | ||
| 603 | ! BOOST_WORKAROUND(BOOST_MSVC, < 1910)) | ||
| 604 | buffers_pair( | ||
| 605 | buffers_pair const& other) = default; | ||
| 606 | buffers_pair& operator=( | ||
| 607 | buffers_pair const& other) = default; | ||
| 608 | |||
| 609 | #else | ||
| 610 | buffers_pair( | ||
| 611 | buffers_pair const& other) noexcept | ||
| 612 | : buffers_pair( | ||
| 613 | *other.begin(), | ||
| 614 | *(other.begin() + 1)) | ||
| 615 | { | ||
| 616 | } | ||
| 617 | |||
| 618 | buffers_pair& | ||
| 619 | operator=(buffers_pair const& other) | ||
| 620 | { | ||
| 621 | b_[0] = other.b_[0]; | ||
| 622 | b_[1] = other.b_[1]; | ||
| 623 | return *this; | ||
| 624 | } | ||
| 625 | #endif | ||
| 626 | |||
| 627 | // const pair construction | ||
| 628 | // from mutable mutable pair | ||
| 629 | template< | ||
| 630 | bool isConst_ = isConst, | ||
| 631 | class = typename std::enable_if< | ||
| 632 | isConst_>::type> | ||
| 633 | buffers_pair( | ||
| 634 | buffers_pair<false> const& other) | ||
| 635 | : buffers_pair( | ||
| 636 | other.b_[0], | ||
| 637 | other.b_[1]) | ||
| 638 | { | ||
| 639 | } | ||
| 640 | |||
| 641 | // const pair assignment | ||
| 642 | // from mutable mutable pair | ||
| 643 | template< | ||
| 644 | bool isConst_ = isConst, | ||
| 645 | class = typename std::enable_if< | ||
| 646 | isConst_>::type> | ||
| 647 | buffers_pair& | ||
| 648 | operator=( | ||
| 649 | buffers_pair<false> const& other) | ||
| 650 | { | ||
| 651 | b_[0] = other.b_[0]; | ||
| 652 | b_[1] = other.b_[1]; | ||
| 653 | return *this; | ||
| 654 | } | ||
| 655 | |||
| 656 | 16534 | buffers_pair( | |
| 657 | value_type b0, | ||
| 658 | value_type b1) noexcept | ||
| 659 | 16534 | { | |
| 660 |
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|
16534 | if(b0.size() > 0) |
| 661 | { | ||
| 662 | 15754 | b_[0] = b0; | |
| 663 | 15754 | b_[1] = b1; | |
| 664 | } | ||
| 665 | else | ||
| 666 | { | ||
| 667 | 780 | b_[0] = b1; | |
| 668 | } | ||
| 669 | 16534 | } | |
| 670 | |||
| 671 | const_buffer | ||
| 672 | operator[]( | ||
| 673 | std::size_t i) const noexcept | ||
| 674 | { | ||
| 675 | BOOST_ASSERT(i < 2); | ||
| 676 | return b_[i]; | ||
| 677 | } | ||
| 678 | |||
| 679 | const_iterator | ||
| 680 | 13351 | begin() const noexcept | |
| 681 | { | ||
| 682 | 13351 | return b_; | |
| 683 | } | ||
| 684 | |||
| 685 | const_iterator | ||
| 686 | 10330 | end() const noexcept | |
| 687 | { | ||
| 688 |
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10330 | if(b_[1].size() > 0) |
| 689 | 9362 | return &b_[2]; | |
| 690 |
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968 | if(b_[0].size() > 0) |
| 691 | 968 | return &b_[1]; | |
| 692 | ✗ | return b_; | |
| 693 | } | ||
| 694 | |||
| 695 | private: | ||
| 696 | value_type b_[2]; | ||
| 697 | }; | ||
| 698 | |||
| 699 | #if BOOST_WORKAROUND(BOOST_MSVC, < 1910) | ||
| 700 | # pragma warning (pop) | ||
| 701 | #endif | ||
| 702 | |||
| 703 | /** A mutable buffers pair | ||
| 704 | */ | ||
| 705 | using mutable_buffers_pair = | ||
| 706 | buffers_pair<false>; | ||
| 707 | |||
| 708 | /** A const buffers pair | ||
| 709 | */ | ||
| 710 | using const_buffers_pair = | ||
| 711 | buffers_pair<true>; | ||
| 712 | |||
| 713 | //------------------------------------------------ | ||
| 714 | |||
| 715 | /** Return the total octets in a buffer sequence | ||
| 716 | */ | ||
| 717 | template< | ||
| 718 | class ConstBuffers | ||
| 719 | #ifndef BOOST_HTTP_PROTO_DOCS | ||
| 720 | , class = typename std::enable_if< | ||
| 721 | is_const_buffers<ConstBuffers>::value | ||
| 722 | >::type | ||
| 723 | #endif | ||
| 724 | > | ||
| 725 | std::size_t | ||
| 726 | 38 | buffer_size( | |
| 727 | ConstBuffers const& buffers) noexcept | ||
| 728 | { | ||
| 729 | 38 | std::size_t n = 0; | |
| 730 |
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90 | for(const_buffer b : buffers) |
| 731 | 52 | n += b.size(); | |
| 732 | 38 | return n; | |
| 733 | } | ||
| 734 | |||
| 735 | //------------------------------------------------ | ||
| 736 | |||
| 737 | /** Copy buffer contents | ||
| 738 | */ | ||
| 739 | template< | ||
| 740 | class MutableBuffers, | ||
| 741 | class ConstBuffers> | ||
| 742 | std::size_t | ||
| 743 | 2754 | buffer_copy( | |
| 744 | MutableBuffers const& to, | ||
| 745 | ConstBuffers const& from, | ||
| 746 | std::size_t at_most = | ||
| 747 | std::size_t(-1)) noexcept | ||
| 748 | { | ||
| 749 | // If you get a compile error here it | ||
| 750 | // means that one or both of your types | ||
| 751 | // do not meet the requirements. | ||
| 752 | static_assert( | ||
| 753 | is_mutable_buffers<MutableBuffers>::value, | ||
| 754 | "Type requirements not met"); | ||
| 755 | static_assert( | ||
| 756 | is_const_buffers<ConstBuffers>::value, | ||
| 757 | "Type requirements not met"); | ||
| 758 | |||
| 759 | 2754 | std::size_t total = 0; | |
| 760 | 2754 | std::size_t pos0 = 0; | |
| 761 | 2754 | std::size_t pos1 = 0; | |
| 762 | 2754 | auto const end0 = from.end(); | |
| 763 | 2754 | auto const end1 = to.end(); | |
| 764 | 2754 | auto it0 = from.begin(); | |
| 765 | 2754 | auto it1 = to.begin(); | |
| 766 | 4843 | while( | |
| 767 |
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5231 | total < at_most && |
| 768 |
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12445 | it0 != end0 && |
| 769 | it1 != end1) | ||
| 770 | { | ||
| 771 | const_buffer b0 = | ||
| 772 | 4843 | const_buffer(*it0) + pos0; | |
| 773 | mutable_buffer b1 = | ||
| 774 | 4843 | mutable_buffer(*it1) + pos1; | |
| 775 | std::size_t amount = | ||
| 776 | 27673 | [&] | |
| 777 | { | ||
| 778 | 4843 | std::size_t n = b0.size(); | |
| 779 |
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4843 | if( n > b1.size()) |
| 780 | 1730 | n = b1.size(); | |
| 781 |
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4843 | if( n > at_most - total) |
| 782 | 1728 | n = at_most - total; | |
| 783 | 4843 | std::memcpy( | |
| 784 | b1.data(), | ||
| 785 | b0.data(), | ||
| 786 | n); | ||
| 787 | 4843 | return n; | |
| 788 | 4843 | }(); | |
| 789 | 4843 | total += amount; | |
| 790 |
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4843 | if(amount == b1.size()) |
| 791 | { | ||
| 792 | 1715 | ++it1; | |
| 793 | 1715 | pos1 = 0; | |
| 794 | } | ||
| 795 | else | ||
| 796 | { | ||
| 797 | 3128 | pos1 += amount; | |
| 798 | } | ||
| 799 |
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4843 | if(amount == b0.size()) |
| 800 | { | ||
| 801 | 1891 | ++it0; | |
| 802 | 1891 | pos0 = 0; | |
| 803 | } | ||
| 804 | else | ||
| 805 | { | ||
| 806 | 2952 | pos0 += amount; | |
| 807 | } | ||
| 808 | } | ||
| 809 | 2754 | return total; | |
| 810 | } | ||
| 811 | |||
| 812 | //------------------------------------------------ | ||
| 813 | |||
| 814 | // | ||
| 815 | // size | ||
| 816 | // | ||
| 817 | |||
| 818 | // | ||
| 819 | // prefix | ||
| 820 | // | ||
| 821 | |||
| 822 | #ifndef BOOST_HTTP_PROTO_DOCS | ||
| 823 | template<class Buffers> | ||
| 824 | void | ||
| 825 | tag_invoke( | ||
| 826 | prefix_tag const&, | ||
| 827 | Buffers const&, | ||
| 828 | std::size_t) = delete; | ||
| 829 | #endif | ||
| 830 | |||
| 831 | /** Returns the type of a prefix of Buffers | ||
| 832 | */ | ||
| 833 | #ifdef BOOST_HTTP_PROTO_DOCS | ||
| 834 | template<class Buffers> | ||
| 835 | using prefix_type = __see_below__; | ||
| 836 | #else | ||
| 837 | template<class Buffers> | ||
| 838 | using prefix_type = decltype( | ||
| 839 | tag_invoke( | ||
| 840 | prefix_tag{}, | ||
| 841 | std::declval<Buffers const&>(), | ||
| 842 | std::size_t{})); | ||
| 843 | #endif | ||
| 844 | |||
| 845 | /** Return a prefix of the buffers. | ||
| 846 | */ | ||
| 847 | template<class Buffers> | ||
| 848 | auto | ||
| 849 | 8 | prefix( | |
| 850 | Buffers const& b, | ||
| 851 | std::size_t n) -> | ||
| 852 | prefix_type<Buffers> | ||
| 853 | { | ||
| 854 | static_assert( | ||
| 855 | is_const_buffers<Buffers>::value, | ||
| 856 | "Type requirements not met"); | ||
| 857 | |||
| 858 | 16 | return tag_invoke( | |
| 859 | 8 | prefix_tag{}, b, n); | |
| 860 | } | ||
| 861 | |||
| 862 | /** Return a prefix of the buffers. | ||
| 863 | */ | ||
| 864 | template<class Buffers> | ||
| 865 | auto | ||
| 866 | 4 | sans_suffix( | |
| 867 | Buffers const& b, | ||
| 868 | std::size_t n) -> | ||
| 869 | prefix_type<Buffers> | ||
| 870 | { | ||
| 871 | 4 | auto const n0 = buffer_size(b); | |
| 872 |
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4 | if( n > n0) |
| 873 | ✗ | n = n0; | |
| 874 | 4 | return prefix(b, n0 - n); | |
| 875 | } | ||
| 876 | |||
| 877 | // | ||
| 878 | // suffix | ||
| 879 | // | ||
| 880 | |||
| 881 | #ifndef BOOST_HTTP_PROTO_DOCS | ||
| 882 | template<class Buffers> | ||
| 883 | void | ||
| 884 | tag_invoke( | ||
| 885 | suffix_tag const&, | ||
| 886 | Buffers const&, | ||
| 887 | std::size_t) = delete; | ||
| 888 | #endif | ||
| 889 | |||
| 890 | /** Returns the type of a suffix of Buffers. | ||
| 891 | */ | ||
| 892 | #ifdef BOOST_HTTP_PROTO_DOCS | ||
| 893 | template<class Buffers> | ||
| 894 | using suffix_type = __see_below__; | ||
| 895 | #else | ||
| 896 | template<class Buffers> | ||
| 897 | using suffix_type = decltype( | ||
| 898 | tag_invoke( | ||
| 899 | suffix_tag{}, | ||
| 900 | std::declval<Buffers const&>(), | ||
| 901 | std::size_t{})); | ||
| 902 | #endif | ||
| 903 | |||
| 904 | /** Return a suffix of the buffers. | ||
| 905 | */ | ||
| 906 | template<class Buffers> | ||
| 907 | auto | ||
| 908 | 8 | suffix( | |
| 909 | Buffers const& b, | ||
| 910 | std::size_t n) -> | ||
| 911 | suffix_type<Buffers> | ||
| 912 | { | ||
| 913 | static_assert( | ||
| 914 | is_const_buffers<Buffers>::value, | ||
| 915 | "Type requirements not met"); | ||
| 916 | |||
| 917 | 16 | return tag_invoke( | |
| 918 | 8 | suffix_tag{}, b, n); | |
| 919 | } | ||
| 920 | |||
| 921 | /** Return a suffix of the buffers. | ||
| 922 | */ | ||
| 923 | template<class Buffers> | ||
| 924 | auto | ||
| 925 | 2 | sans_prefix( | |
| 926 | Buffers const& b, | ||
| 927 | std::size_t n) -> | ||
| 928 | suffix_type<Buffers> | ||
| 929 | { | ||
| 930 | static_assert( | ||
| 931 | is_const_buffers<Buffers>::value, | ||
| 932 | "Type requirements not met"); | ||
| 933 | |||
| 934 | 2 | auto const n0 = buffer_size(b); | |
| 935 | 2 | if( n > n0) | |
| 936 | ✗ | n = n0; | |
| 937 | 2 | return suffix(b, n0 - n); | |
| 938 | } | ||
| 939 | |||
| 940 | } // http_proto | ||
| 941 | } // boost | ||
| 942 | |||
| 943 | #endif | ||
| 944 |